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Pods/AliyunOSSiOS/AliyunOSSSDK/NSData+OSS.h

@@ -0,0 +1,20 @@
+//
+//  NSData+OSS.h
+//  AliyunOSSSDK
+//
+//  Created by ws on 2023/12/28.
+//  Copyright © 2023 aliyun. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface NSData (OSS)
+
+- (NSString *)hexString;
+- (NSData *)calculateSha256;
+
+@end
+
+NS_ASSUME_NONNULL_END

Pods/AliyunOSSiOS/AliyunOSSSDK/NSData+OSS.m

@@ -0,0 +1,41 @@
+//
+//  NSData+OSS.m
+//  AliyunOSSSDK
+//
+//  Created by ws on 2023/12/28.
+//  Copyright © 2023 aliyun. All rights reserved.
+//
+
+#import "NSData+OSS.h"
+#import <CommonCrypto/CommonDigest.h>
+
+@implementation NSData (OSS)
+
+- (NSString *)hexString {
+    NSMutableString *hexString = [NSMutableString string];
+    Byte *byte = (Byte *)[self bytes];
+    for (int i = 0; i<[self length]; i++) {
+        [hexString appendFormat:@"%x", (*(byte + i) >> 4) & 0xf];
+        [hexString appendFormat:@"%x", *(byte + i) & 0xf];
+    }
+    return hexString;
+}
+
+- (NSData *)calculateSha256 {
+    unsigned char *digest = NULL;
+    
+    digest = malloc(CC_SHA256_DIGEST_LENGTH * sizeof(unsigned char));
+    memset(digest, 0x0, CC_SHA256_DIGEST_LENGTH);
+    CC_SHA256(self.bytes, (CC_LONG)self.length, digest);
+    
+    if (digest) {
+        NSData *data = [NSData dataWithBytes:digest length:CC_SHA256_DIGEST_LENGTH];
+        free(digest);
+        return data;
+    }
+    free(digest);
+    
+    return nil;
+}
+
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/NSDate+OSS.h

@@ -0,0 +1,22 @@
+//
+//  NSDate+OSS.h
+//  AliyunOSSSDK
+//
+//  Created by huaixu on 2018/7/31.
+//  Copyright © 2018年 aliyun. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+
+/**
+ Categories NSDate
+ */
+@interface NSDate (OSS)
++ (void)oss_setClockSkew:(NSTimeInterval)clockSkew;
++ (NSDate *)oss_dateFromString:(NSString *)string;
++ (NSDate *)oss_clockSkewFixedDate;
+- (NSString *)oss_asStringValue;
++ (NSDate *)oss_dateFromString:(NSString *)string
+                    dateFormat:(NSString *)dateFormat;
+- (NSString *)oss_asStringValueWithDateFormat:(NSString *)dateFormat;
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/NSDate+OSS.m

@@ -0,0 +1,68 @@
+//
+//  NSDate+OSS.m
+//  AliyunOSSSDK
+//
+//  Created by huaixu on 2018/7/31.
+//  Copyright © 2018年 aliyun. All rights reserved.
+//
+
+#import "NSDate+OSS.h"
+
+@implementation NSDate (OSS)
+
+NSString * const serverReturnDateFormat = @"EEE, dd MMM yyyy HH:mm:ss z";
+
+static NSTimeInterval _clockSkew = 0.0;
+
++ (void)oss_setClockSkew:(NSTimeInterval)clockSkew {
+    @synchronized(self) {
+        _clockSkew = clockSkew;
+    }
+}
+
++ (NSDate *)oss_clockSkewFixedDate {
+    NSTimeInterval skew = 0.0;
+    @synchronized(self) {
+        skew = _clockSkew;
+    }
+    return [[NSDate date] dateByAddingTimeInterval:(-1 * skew)];
+}
+
++ (NSDate *)oss_dateFromString:(NSString *)string {
+    NSDateFormatter *dateFormatter = [NSDateFormatter new];
+    dateFormatter.timeZone = [NSTimeZone timeZoneWithName:@"GMT"];
+    dateFormatter.locale = [NSLocale localeWithLocaleIdentifier:@"en_US"];
+    dateFormatter.dateFormat = serverReturnDateFormat;
+    
+    return [dateFormatter dateFromString:string];
+}
+
+- (NSString *)oss_asStringValue {
+    NSDateFormatter *dateFormatter = [NSDateFormatter new];
+    dateFormatter.timeZone = [NSTimeZone timeZoneWithName:@"GMT"];
+    dateFormatter.locale = [NSLocale localeWithLocaleIdentifier:@"en_US"];
+    dateFormatter.dateFormat = serverReturnDateFormat;
+    
+    return [dateFormatter stringFromDate:self];
+}
+
++ (NSDate *)oss_dateFromString:(NSString *)string
+                    dateFormat:(NSString *)dateFormat {
+    NSDateFormatter *dateFormatter = [NSDateFormatter new];
+    dateFormatter.timeZone = [NSTimeZone timeZoneWithName:@"GMT"];
+    dateFormatter.locale = [NSLocale localeWithLocaleIdentifier:@"en_US"];
+    dateFormatter.dateFormat = dateFormat;
+    
+    return [dateFormatter dateFromString:string];
+}
+
+- (NSString *)oss_asStringValueWithDateFormat:(NSString *)dateFormat {
+    NSDateFormatter *dateFormatter = [NSDateFormatter new];
+    dateFormatter.timeZone = [NSTimeZone timeZoneWithName:@"GMT"];
+    dateFormatter.locale = [NSLocale localeWithLocaleIdentifier:@"en_US"];
+    dateFormatter.dateFormat = dateFormat;
+    
+    return [dateFormatter stringFromDate:self];
+}
+
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/NSMutableData+OSS_CRC.h

@@ -0,0 +1,15 @@
+//
+//  NSMutableData+OSS_CRC.h
+//  AliyunOSSSDK
+//
+//  Created by 怀叙 on 2017/11/29.
+//  Copyright © 2017年 阿里云. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+
+@interface NSMutableData (OSS_CRC)
+
+- (uint64_t)oss_crc64;
+
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/NSMutableData+OSS_CRC.m

@@ -0,0 +1,19 @@
+//
+//  NSMutableData+OSS_CRC.m
+//  AliyunOSSSDK
+//
+//  Created by 怀叙 on 2017/11/29.
+//  Copyright © 2017年 阿里云. All rights reserved.
+//
+
+#import "NSMutableData+OSS_CRC.h"
+#include "aos_crc64.h"
+
+@implementation NSMutableData (OSS_CRC)
+
+- (uint64_t)oss_crc64
+{
+    return aos_crc64(0, self.mutableBytes, self.length);
+}
+
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/NSMutableDictionary+OSS.h

@@ -0,0 +1,15 @@
+//
+//  NSMutableDictionary+OSS.h
+//  AliyunOSSSDK
+//
+//  Created by huaixu on 2018/8/1.
+//  Copyright © 2018年 aliyun. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+
+@interface NSMutableDictionary (OSS)
+
+- (void)oss_setObject:(id)anObject forKey:(id <NSCopying>)aKey;
+
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/NSMutableDictionary+OSS.m

@@ -0,0 +1,19 @@
+//
+//  NSMutableDictionary+OSS.m
+//  AliyunOSSSDK
+//
+//  Created by huaixu on 2018/8/1.
+//  Copyright © 2018年 aliyun. All rights reserved.
+//
+
+#import "NSMutableDictionary+OSS.h"
+
+@implementation NSMutableDictionary (OSS)
+
+- (void)oss_setObject:(id)anObject forKey:(id <NSCopying>)aKey {
+    if (anObject && aKey) {
+        [self setObject:anObject forKey:aKey];
+    }
+}
+
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/NSSet+OSS.h

@@ -0,0 +1,19 @@
+//
+//  NSSet+OSS.h
+//  AliyunOSSSDK
+//
+//  Created by ws on 2023/12/28.
+//  Copyright © 2023 aliyun. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface NSSet (OSS)
+
+- (NSString *)componentsJoinedByString:(NSString *)separator;
+
+@end
+
+NS_ASSUME_NONNULL_END

Pods/AliyunOSSiOS/AliyunOSSSDK/NSSet+OSS.m

@@ -0,0 +1,30 @@
+//
+//  NSSet+OSS.m
+//  AliyunOSSSDK
+//
+//  Created by ws on 2023/12/28.
+//  Copyright © 2023 aliyun. All rights reserved.
+//
+
+#import "NSSet+OSS.h"
+
+@implementation NSSet (OSS)
+
+- (NSString *)componentsJoinedByString:(NSString *)separator {
+    NSMutableString *builder = [NSMutableString new];
+    int i = 0;
+    
+    for (NSObject *part in self) {
+        if ([part isKindOfClass:[NSString class]]) {
+            [builder appendString:(NSString *)part];
+            if (i < [self count] - 1) {
+                [builder appendString:separator];
+            }
+        }
+        i++;
+    }
+    
+    return builder;
+}
+
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSAllRequestNeededMessage.h

@@ -0,0 +1,34 @@
+//
+//  OSSAllRequestNeededMessage.h
+//  AliyunOSSSDK
+//
+//  Created by huaixu on 2018/1/22.
+//  Copyright © 2018年 aliyun. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+#import "OSSConstants.h"
+#import "OSSTask.h"
+
+/**
+ All necessary information in one OSS request.
+ */
+@interface OSSAllRequestNeededMessage : NSObject
+@property (nonatomic, strong) NSString *endpoint;
+@property (nonatomic, strong) NSString *httpMethod;
+@property (nonatomic, strong) NSString *bucketName;
+@property (nonatomic, strong) NSString *objectKey;
+@property (nonatomic, strong) NSString *contentType;
+@property (nonatomic, strong) NSString *contentMd5;
+@property (nonatomic, strong) NSString *range;
+@property (nonatomic, strong) NSString *date;
+@property (nonatomic, strong) NSMutableDictionary *headerParams;
+@property (nonatomic, copy) NSDictionary *params;
+@property (nonatomic, copy) NSString *contentSHA1;
+@property (nonatomic, assign) BOOL isHostInCnameExcludeList;
+@property (nonatomic, assign) BOOL isUseUrlSignature;
+@property (nonatomic, copy) NSSet<NSString *> *additionalHeaderNames;
+
+- (OSSTask *)validateRequestParamsInOperationType:(OSSOperationType)operType;
+
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSAllRequestNeededMessage.m

@@ -0,0 +1,72 @@
+//
+//  OSSAllRequestNeededMessage.m
+//  AliyunOSSSDK
+//
+//  Created by huaixu on 2018/1/22.
+//  Copyright © 2018年 aliyun. All rights reserved.
+//
+
+#import "OSSAllRequestNeededMessage.h"
+
+#import "OSSDefine.h"
+#import "OSSUtil.h"
+
+@implementation OSSAllRequestNeededMessage
+
+- (instancetype)init
+{
+    self = [super init];
+    if (self) {
+        _date = [[NSDate oss_clockSkewFixedDate] oss_asStringValue];
+        _headerParams = [NSMutableDictionary dictionary];
+    }
+    return self;
+}
+
+- (void)setHeaderParams:(NSMutableDictionary *)headerParams {
+    if (!headerParams || [headerParams isEqualToDictionary:_headerParams]) {
+        return;
+    }
+    _headerParams = [headerParams mutableCopy];
+}
+
+- (OSSTask *)validateRequestParamsInOperationType:(OSSOperationType)operType {
+    NSString * errorMessage = nil;
+    
+    if (!self.endpoint) {
+        errorMessage = @"Endpoint should not be nil";
+    }
+    
+    if (!self.bucketName && operType != OSSOperationTypeGetService) {
+        errorMessage = @"Bucket name should not be nil";
+    }
+    
+    if (self.bucketName && ![OSSUtil validateBucketName:self.bucketName]) {
+        errorMessage = @"Bucket name invalid";
+    }
+    
+    if (!self.objectKey &&
+        (operType != OSSOperationTypeGetBucket && operType != OSSOperationTypeCreateBucket
+         && operType != OSSOperationTypeDeleteBucket && operType != OSSOperationTypeGetService
+         && operType != OSSOperationTypeGetBucketACL&& operType != OSSOperationTypeDeleteMultipleObjects
+         && operType != OSSOperationTypeListMultipartUploads
+         && operType != OSSOperationTypeGetBucketInfo)) {
+            errorMessage = @"Object key should not be nil";
+        }
+    
+    
+    
+    if (self.objectKey && ![OSSUtil validateObjectKey:self.objectKey]) {
+        errorMessage = @"Object key invalid";
+    }
+    
+    if (errorMessage) {
+        return [OSSTask taskWithError:[NSError errorWithDomain:OSSClientErrorDomain
+                                                          code:OSSClientErrorCodeInvalidArgument
+                                                      userInfo:@{OSSErrorMessageTOKEN: errorMessage}]];
+    } else {
+        return [OSSTask taskWithResult:nil];
+    }
+}
+
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSClient.h

@@ -0,0 +1,533 @@
+//
+//  OSSClient.h
+//  oss_ios_sdk
+//
+//  Created by zhouzhuo on 8/16/15.
+//  Copyright (c) 2015 aliyun.com. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+@class OSSGetServiceRequest;
+@class OSSCreateBucketRequest;
+@class OSSDeleteBucketRequest;
+@class OSSHeadObjectRequest;
+@class OSSGetBucketRequest;
+@class OSSGetBucketACLRequest;
+@class OSSGetObjectRequest;
+@class OSSGetObjectACLRequest;
+@class OSSPutObjectRequest;
+@class OSSPutObjectACLRequest;
+@class OSSDeleteObjectRequest;
+@class OSSDeleteMultipleObjectsRequest;
+@class OSSCopyObjectRequest;
+@class OSSInitMultipartUploadRequest;
+@class OSSUploadPartRequest;
+@class OSSCompleteMultipartUploadRequest;
+@class OSSListPartsRequest;
+@class OSSListMultipartUploadsRequest;
+@class OSSAbortMultipartUploadRequest;
+@class OSSAppendObjectRequest;
+@class OSSResumableUploadRequest;
+@class OSSMultipartUploadRequest;
+@class OSSCallBackRequest;
+@class OSSImagePersistRequest;
+@class OSSGetBucketInfoRequest;
+@class OSSPutSymlinkRequest;
+@class OSSGetSymlinkRequest;
+@class OSSRestoreObjectRequest;
+@class OSSGetObjectTaggingRequest;
+@class OSSDeleteObjectTaggingRequest;
+@class OSSPutObjectTaggingRequest;
+
+@class OSSTask;
+@class OSSExecutor;
+@class OSSNetworking;
+@class OSSClientConfiguration;
+@protocol OSSCredentialProvider;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+ OSSClient is the entry class to access OSS in an iOS client. It provides all the methods to communicate with OSS.
+ Generally speaking, only one instance of OSSClient is needed in the whole app.
+ */
+@interface OSSClient : NSObject
+
+/**
+ OSS endpoint. It varies in different regions. Please check out OSS official website for the exact endpoints for your data.
+ */
+@property (nonatomic, strong) NSString * endpoint;
+
+/**
+ The networking instance for sending and receiving data
+ */
+@property (nonatomic, strong) OSSNetworking * networking;
+
+/**
+ The credential provider instance
+ */
+@property (nonatomic, strong) id<OSSCredentialProvider> credentialProvider;
+
+/**
+ Client configuration instance
+ */
+@property (nonatomic, strong) OSSClientConfiguration * clientConfiguration;
+
+/// OSS services Region
+@property (nonatomic, copy) NSString *region;
+
+/// cloudBoxId OSS cloud box id
+@property (nonatomic, copy) NSString *cloudBoxId;
+
+/**
+ oss operation task queue
+ */
+@property (nonatomic, strong, readonly) OSSExecutor * ossOperationExecutor;
+
+/**
+ Initializes an OSSClient instance with the default client configuration.
+ @endpoint it specifies domain of the bucket's region. Starting 2017, the domain must be prefixed with "https://" to follow Apple's ATS policy.
+             For example: "https://oss-cn-hangzhou.aliyuncs.com"
+ @credentialProvider The credential provider
+ */
+- (instancetype)initWithEndpoint:(NSString *)endpoint
+              credentialProvider:(id<OSSCredentialProvider>) credentialProvider;
+
+/**
+ Initializes an OSSClient with the custom client configuration.
+ @endpoint it specifies domain of the bucket's region. Starting 2017, the domain must be prefixed with "https://" to follow Apple's ATS policy.
+             For example: "https://oss-cn-hangzhou.aliyuncs.com"
+ @credentialProvider The credential provider
+ @conf The custom client configuration such as retry time, timeout values, etc.
+ */
+- (instancetype)initWithEndpoint:(NSString *)endpoint
+              credentialProvider:(id<OSSCredentialProvider>)credentialProvider
+             clientConfiguration:(OSSClientConfiguration *)conf;
+
+#pragma mark restful-api
+
+/**
+ The corresponding RESTFul API: GetService
+ Gets all the buckets of the current user
+ Notes：
+ 1. STS is not supported yet in this call.
+ 2. When all buckets are returned, the xml in response body does not have nodes of Prefix, Marker, MaxKeys, IsTruncated and NextMarker.
+    If there're remaining buckets to return, the xml will have these nodes. The nextMarker is the value of marker in the next call.
+ */
+- (OSSTask *)getService:(OSSGetServiceRequest *)request;
+
+@end
+
+
+@interface OSSClient (Bucket)
+
+/**
+ The corresponding RESTFul API: PutBucket
+ Creates a bucket--it does not support anonymous access. By default, the datacenter used is oss-cn-hangzhou.
+ Callers could explicitly specify the datacenter for the bucket to optimize the performance and cost or meet the regulation requirement.
+ Notes:
+ 1. STS is not supported yet.
+ */
+- (OSSTask *)createBucket:(OSSCreateBucketRequest *)request;
+
+/**
+ The corresponding RESTFul API: DeleteBucket
+ Deletes a bucket.
+ */
+- (OSSTask *)deleteBucket:(OSSDeleteBucketRequest *)request;
+
+/**
+ The corresponding RESTFul API: GetBucket
+ Lists all objects in a bucket. It could be specified with filters such as prefix, marker, delimeter and max-keys.
+ */
+- (OSSTask *)getBucket:(OSSGetBucketRequest *)request;
+
+/**
+ The corresponding RESTFul API: GetBucketInfo
+ Gets the {@link Bucket}'s basic information as well as its ACL.
+ */
+- (OSSTask *)getBucketInfo:(OSSGetBucketInfoRequest *)request;
+
+/**
+ The corresponding RESTFul API: GetBucketACL
+ Gets the bucket ACL.
+ */
+- (OSSTask *)getBucketACL:(OSSGetBucketACLRequest *)request;
+
+@end
+
+
+@interface OSSClient (Object)
+
+/**
+ The corresponding RESTFul API: HeadObject
+ Gets the object's metadata information. The object's content is not returned.
+ */
+- (OSSTask *)headObject:(OSSHeadObjectRequest *)request;
+
+/**
+ The corresponding RESTFul API: GetObject
+ Gets the whole object (includes content). It requires caller have read permission on the object.
+ */
+- (OSSTask *)getObject:(OSSGetObjectRequest *)request;
+
+/**
+ The corresponding RESTFul API: GetObjectACL
+ get the acl of an object.
+ */
+- (OSSTask *)getObjectACL:(OSSGetObjectACLRequest *)request;
+
+/**
+ The corresponding RESTFul API: PutObject
+ Uploads a file.
+ */
+- (OSSTask *)putObject:(OSSPutObjectRequest *)request;
+
+/**
+ Sets the object's ACL. Right now an object has three access permissions: private, public-ready, public-read-write.
+ The operation specifies the x-oss-object-acl header in the put request. The caller must be the owner of the object.
+ If succeeds, it returns HTTP status 200; otherwise it returns related error code and error messages.
+ */
+- (OSSTask *)putObjectACL:(OSSPutObjectACLRequest *)request;
+
+/**
+ The corresponding RESTFul API: AppendObject
+ Appends data to an existing or non-existing object. The object created by this operation is appendable.
+ As a comparison, the object created by Put Object is normal (non-appendable).
+ */
+- (OSSTask *)appendObject:(OSSAppendObjectRequest *)request;
+
+/**
+ *  @brief      Appends data to an existing or non-existing object on the OSS server.
+ *              The object created by this operation is appendable.
+ *  @request    request
+ *  @crc64ecma  crc64ecma
+ *             if object has been stored on OSS server, you need to invoke headObject
+ *             api get object's crc64ecma,then use this api to append data to the
+ *             object.
+ */
+- (OSSTask *)appendObject:(OSSAppendObjectRequest *)request withCrc64ecma:(nullable NSString *)crc64ecma;
+
+/**
+ The corresponding RESTFul API: copyObject
+ Copies an existing object to another one.The operation sends a PUT request with x-oss-copy-source header to specify the source object.
+ OSS server side will detect and copy the object. If it succeeds, the new object's metadata information will be returned.
+ The operation applies for files less than 1GB. For big files, use UploadPartCopy RESTFul API.
+ */
+- (OSSTask *)copyObject:(OSSCopyObjectRequest *)request;
+
+/**
+ * Batch deletes the specified files under a specific bucket. If the files
+ * are non-exist, the operation will still return successful.
+ *
+ * @param request
+ *            A OSSDeleteMultipleObjectsRequest instance which specifies the
+ *            bucket and file keys to delete.
+ * @return A OSSTask with result of OSSDeleteMultipleObjectsResult instance which specifies each
+ *         file's result in normal mode or only failed deletions in quite
+ *         mode. By default it's quite mode.
+ */
+- (OSSTask *)deleteMultipleObjects:(OSSDeleteMultipleObjectsRequest *)request;
+
+/**
+ The corresponding RESTFul API: DeleteObject
+ Deletes an object
+ */
+- (OSSTask *)deleteObject:(OSSDeleteObjectRequest *)request;
+
+/**
+ * Creates a symbol link to a target file under the bucket---this is not
+ * supported for archive class bucket.
+ *
+ * @param request
+ *            A OSSPutSymlinkRequest instance that specifies the
+ *            bucket name, symlink name.
+ * @return An instance of OSSTask. On successful execution, `task.result` will
+ *         contain an instance of `OSSPutSymlinkResult`,otherwise will contain
+ *         an instance of NSError.
+ *
+ * for more information,please refer to https://help.aliyun.com/document_detail/45126.html
+ */
+- (OSSTask *)putSymlink:(OSSPutSymlinkRequest *)request;
+
+/**
+ * Gets the symlink information for the given symlink name.
+ *
+ * @param request
+ *            A OSSGetSymlinkRequest instance which specifies the bucket
+ *            name and symlink name.
+ * @return An instance of OSSTask. On successful execution, `task.result` will
+ *         contain an instance of `OSSGetSymlinkResult`,otherwise will contain
+ *         an instance of NSError.
+ *
+ * for more information,please refer to https://help.aliyun.com/document_detail/45146.html
+ */
+- (OSSTask *)getSymlink:(OSSGetSymlinkRequest *)request;
+
+/**
+ * Restores the object of archive storage. The function is not applicable to
+ * Normal or IA storage. The restoreObject() needs to be called prior to
+ * calling getObject() on an archive object.
+ *
+ * @param request
+ *          A container for the necessary parameters to execute the RestoreObject
+ *          service method.
+ *
+ * @return An instance of OSSTask. On successful execution, `task.result` will
+ *         contain an instance of `OSSRestoreObjectResult`,otherwise will contain
+ *         an instance of NSError.
+ *
+ * for more information,please refer to https://help.aliyun.com/document_detail/52930.html
+ */
+- (OSSTask *)restoreObject:(OSSRestoreObjectRequest *)request;
+
+/**
+ * You can call this operation to query the tags of an object.
+ *
+ * @param request
+ *          A OSSGetObjectTaggingRequest instance which specifies the bucket
+ *            name and object key.
+ *
+ * @return An instance of OSSTask. On successful execution, `task.result` will
+ *         contain an instance of `OSSGetObjectTaggingResult`,otherwise will contain
+ *         an instance of NSError.
+ *
+ * for more information,please refer to https://help.aliyun.com/document_detail/114878.html
+ */
+- (OSSTask *)getObjectTagging:(OSSGetObjectTaggingRequest *)request;
+
+/**
+ * You can call this operation to add tags to an object or update the tags added to
+ *  the bucket. The object tagging feature uses a key-value pair to tag an object.
+ *
+ * @param request
+ *          A OSSPutObjectTaggingRequest instance which specifies the bucket
+ *            name、object key and tags.
+ *
+ * @return An instance of OSSTask. On successful execution, `task.result` will
+ *         contain an instance of `OSSPutObjectTaggingResult`,otherwise will contain
+ *         an instance of NSError.
+ *
+ * for more information,please refer to https://help.aliyun.com/document_detail/114855.html
+ */
+- (OSSTask *)putObjectTagging:(OSSPutObjectTaggingRequest *)request;
+
+/**
+ * You can call this operation to delete the tags of a specified object.
+ *
+ * @param request
+ *          A OSSDeleteObjectTaggingRequest instance which specifies the bucket
+ *            name and object key.
+ *
+ * @return An instance of OSSTask. On successful execution, `task.result` will
+ *         contain an instance of `OSSDeleteObjectTaggingResult`,otherwise will contain
+ *         an instance of NSError.
+ *
+ * for more information,please refer to https://help.aliyun.com/document_detail/114879.html
+ */
+- (OSSTask *)deleteObjectTagging:(OSSDeleteObjectTaggingRequest *)request;
+
+
+
+@end
+
+@interface OSSClient (MultipartUpload)
+
+/**
+ The corresponding RESTFul API: InitiateMultipartUpload
+ Initiates a multipart upload to get a upload Id. It's needed before starting uploading parts data.
+ The upload Id is used for subsequential operations such as aborting the upload, querying the uploaded parts, etc.
+ */
+- (OSSTask *)multipartUploadInit:(OSSInitMultipartUploadRequest *)request;
+
+/**
+ The corresponding RESTFul API: UploadPart
+ After the multipart upload is initiated, this API could be called to upload the data to the target file with the upload Id.
+ Every uploaded part has a unique id called part number, which ranges from 1 to 10,000.
+ For a given upload Id, the part number identifies the specific range of the data in the whole file.
+ If the same part number is used for another upload, the existing data will be overwritten by the new upload.
+ Except the last part, all other part's minimal size is 100KB.
+ But no minimal size requirement on the last part.
+ */
+- (OSSTask *)uploadPart:(OSSUploadPartRequest *)request;
+
+/**
+ The corresponding RESTFul API: CompleteMultipartUpload
+ This API is to complete the multipart upload after all parts data have been uploaded.
+ It must be provided with a valid part list (each part has the part number and ETag).
+ OSS will validate every part and then complete the multipart upload.
+ If any part is invalid (e.g. the part is updated by another part upload), this API will fail.
+ */
+- (OSSTask *)completeMultipartUpload:(OSSCompleteMultipartUploadRequest *)request;
+
+/**
+ The corresponding RESTFul API: ListParts
+ Lists all uploaded parts of the specified upload id.
+ */
+- (OSSTask *)listParts:(OSSListPartsRequest *)request;
+
+/**
+ The corresponding RESTFul API: ListMultipartUploads
+ Lists all multipart uploads with the specified bucket.
+ */
+- (OSSTask *)listMultipartUploads:(OSSListMultipartUploadsRequest *)request;
+
+/**
+ The corresponding RESTFul API: AbortMultipartUpload
+ Aborts the multipart upload by the specified upload Id.
+ Once the multipart upload is aborted by this API, all parts data will be deleted and the upload Id is invalid anymore.
+ */
+- (OSSTask *)abortMultipartUpload:(OSSAbortMultipartUploadRequest *)request;
+
+- (OSSTask *)abortResumableMultipartUpload:(OSSResumableUploadRequest *)request;
+
+/**
+ Multipart upload API
+ */
+- (OSSTask *)multipartUpload:(OSSMultipartUploadRequest *)request;
+/**
+ TODOTODO
+ Resumable upload API
+ This API wraps the multipart upload and also enables resuming upload by reading/writing  the checkpoint data.
+ For a new file, multipartUploadInit() needs to be called first to get the upload Id. Then use this upload id to call this API to upload the data.
+ If the upload fails, checks the error messages:
+ If it's a recoverable error, then call this API again with the same upload Id to retry. The uploaded data will not be uploaded again.
+ Otherwise then you may need to recreates a new upload Id and call this method again.
+ Check out demo for the detail.
+ */
+- (OSSTask *)resumableUpload:(OSSResumableUploadRequest *)request;
+
+/**
+ * multipart upload sequentially in order,support resume upload
+ */
+- (OSSTask *)sequentialMultipartUpload:(OSSResumableUploadRequest *)request;
+
+@end
+
+
+@interface OSSClient (PresignURL)
+
+/**
+ Generates a signed URL for the object and anyone has this URL will get the GET permission on the object.
+ @bucketName object's bucket name
+ @objectKey Object name
+ @interval Expiration time in seconds. The URL could be specified with the expiration time to limit the access window on the object.
+ */
+- (OSSTask *)presignConstrainURLWithBucketName:(NSString *)bucketName
+                                 withObjectKey:(NSString *)objectKey
+                        withExpirationInterval:(NSTimeInterval)interval;
+
+/**
+ Generates a signed URL for the object and anyone has this URL will get the specified permission on the object.
+ @bucketName object's bucket name
+ @objectKey Object name
+ @interval Expiration time in seconds. The URL could be specified with the expiration time to limit the access window on the object.
+ @parameter it could specify allowed HTTP methods
+ */
+- (OSSTask *)presignConstrainURLWithBucketName:(NSString *)bucketName
+                                 withObjectKey:(NSString *)objectKey
+                        withExpirationInterval:(NSTimeInterval)interval
+                                withParameters:(NSDictionary *)parameters;
+
+/**
+ Generates a signed URL for the object and anyone has this URL will get the specified permission on the object. currently only support get and head method.
+ @bucketName object's bucket name
+ @objectKey Object name
+ @httpMethod http method.currently only support get and head.
+ @interval Expiration time in seconds. The URL could be specified with the expiration time to limit the access window on the object.
+ @parameter it could specify allowed HTTP methods
+ */
+- (OSSTask *)presignConstrainURLWithBucketName:(NSString *)bucketName
+                                 withObjectKey:(NSString *)objectKey
+                                    httpMethod:(NSString *)method
+                        withExpirationInterval:(NSTimeInterval)interval
+                                withParameters:(NSDictionary *)parameters;
+
+
+/// Generates a signed URL for the object and anyone has this URL will get the specified permission on the object.
+/// @param bucketName object's bucket name
+/// @param objectKey Object name
+/// @param method http method.currently only support get and head.
+/// @param interval Expiration time in seconds. The URL could be specified with the expiration time to limit the access window on the object.
+/// @param parameters it could specify allowed HTTP methods
+/// @param contentType Content-Type to url sign
+/// @param contentMd5 Content-MD5 to url sign
+- (OSSTask *)presignConstrainURLWithBucketName:(NSString *)bucketName
+                                 withObjectKey:(NSString *)objectKey
+                                    httpMethod:(NSString *)method
+                        withExpirationInterval:(NSTimeInterval)interval
+                                withParameters:(NSDictionary *)parameters
+                                   contentType:(nullable NSString *)contentType
+                                    contentMd5:(nullable NSString *)contentMd5;
+
+/// Generates a signed URL for the object and anyone has this URL will get the specified permission on the object.
+/// @param bucketName object's bucket name
+/// @param objectKey Object name
+/// @param method http method.currently only support get and head.
+/// @param interval Expiration time in seconds. The URL could be specified with the expiration time to limit the access window on the object.
+/// @param parameters it could specify allowed HTTP methods
+/// @param headers Content Type, Content-MD5, and all HTTP headers prefixed with 'x-oss-*'
+- (OSSTask *)presignConstrainURLWithBucketName:(NSString *)bucketName
+                                 withObjectKey:(NSString *)objectKey
+                                    httpMethod:(NSString *)method
+                        withExpirationInterval:(NSTimeInterval)interval
+                                withParameters:(NSDictionary *)parameters
+                                   withHeaders:(nullable NSDictionary *)headers;
+
+/**
+ If the object's ACL is public read or public read-write, use this API to generate a signed url for sharing.
+ @bucketName Object's bucket name
+ @objectKey Object name
+ */
+- (OSSTask *)presignPublicURLWithBucketName:(NSString *)bucketName
+                              withObjectKey:(NSString *)objectKey;
+
+/** TODOTODO
+ If the object's ACL is public read or public read-write, use this API to generate a signed url for sharing.
+ @bucketName Object's bucket name
+ @objectKey Object name
+ @parameter the request parameters.
+ */
+- (OSSTask *)presignPublicURLWithBucketName:(NSString *)bucketName
+                              withObjectKey:(NSString *)objectKey
+                             withParameters:(NSDictionary *)parameters;
+
+@end
+
+
+@interface OSSClient (ImageService)
+
+/*
+ * image persist action
+ * https://help.aliyun.com/document_detail/55811.html
+ */
+- (OSSTask *)imageActionPersist:(OSSImagePersistRequest *)request;
+
+@end
+
+
+@interface OSSClient (Utilities)
+
+/**
+ Checks if the object exists
+ @bucketName Object's bucket name
+ @objectKey Object name
+ 
+ return YES                     Object exists
+ return NO && *error = nil      Object does not exist
+ return NO && *error != nil     Error occured.
+ */
+- (BOOL)doesObjectExistInBucket:(NSString *)bucketName
+                      objectKey:(NSString *)objectKey
+                          error:(const NSError **)error;
+
+@end
+
+
+@interface OSSClient (Callback)
+
+- (OSSTask *)triggerCallBack:(OSSCallBackRequest *)request;
+
+@end
+
+NS_ASSUME_NONNULL_END

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSCompat.h

@@ -0,0 +1,85 @@
+//
+//  OSSCompat.h
+//  oss_ios_sdk_new
+//
+//  Created by zhouzhuo on 9/10/15.
+//  Copyright (c) 2015 aliyun.com. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+#import "OSSService.h"
+
+@class OSSCancellationTokenSource;
+
+typedef OSSCancellationTokenSource OSSTaskHandler;
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface OSSClient (Compat)
+
+/**
+ The old version's upload API.
+ Please use putObject instead.
+ */
+- (OSSTaskHandler *)uploadData:(NSData *)data
+               withContentType:(NSString *)contentType
+                withObjectMeta:(NSDictionary *)meta
+                  toBucketName:(NSString *)bucketName
+                   toObjectKey:(NSString *)objectKey
+                   onCompleted:(void(^)(BOOL, NSError *))onCompleted
+                    onProgress:(void(^)(float progress))onProgress;
+
+/**
+ The old version's download API.
+ Please use getObject instead.
+ */
+- (OSSTaskHandler *)downloadToDataFromBucket:(NSString *)bucketName
+                   objectKey:(NSString *)objectKey
+                 onCompleted:(void(^)(NSData *, NSError *))onCompleted
+                  onProgress:(void(^)(float progress))onProgress;
+
+/**
+ The old version's upload API.
+ Please use putObject instead.
+ */
+- (OSSTaskHandler *)uploadFile:(NSString *)filePath
+                withContentType:(NSString *)contentType
+                 withObjectMeta:(NSDictionary *)meta
+                   toBucketName:(NSString *)bucketName
+                    toObjectKey:(NSString *)objectKey
+                    onCompleted:(void(^)(BOOL, NSError *))onCompleted
+                     onProgress:(void(^)(float progress))onProgress;
+
+/**
+ The old version's download API.
+ Please use getObject instead.
+ */
+- (OSSTaskHandler *)downloadToFileFromBucket:(NSString *)bucketName
+                  objectKey:(NSString *)objectKey
+                     toFile:(NSString *)filePath
+                onCompleted:(void(^)(BOOL, NSError *))onCompleted
+                 onProgress:(void(^)(float progress))onProgress;
+
+
+/**
+ The old version's upload API with resumable upload support.
+ Please use resumableUpload instead.
+ */
+- (OSSTaskHandler *)resumableUploadFile:(NSString *)filePath
+          withContentType:(NSString *)contentType
+           withObjectMeta:(NSDictionary *)meta
+             toBucketName:(NSString *)bucketName
+              toObjectKey:(NSString *)objectKey
+              onCompleted:(void(^)(BOOL, NSError *))onCompleted
+               onProgress:(void(^)(float progress))onProgress;
+
+/**
+ The old version's delete API.
+ Please use deleteObject instead.
+ */
+- (void)deleteObjectInBucket:(NSString *)bucketName
+                   objectKey:(NSString *)objectKey
+                 onCompleted:(void(^)(BOOL, NSError *))onCompleted;
+@end
+
+NS_ASSUME_NONNULL_END

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSCompat.m

@@ -0,0 +1,260 @@
+//
+//  OSSCompat.m
+//  oss_ios_sdk_new
+//
+//  Created by zhouzhuo on 9/10/15.
+//  Copyright (c) 2015 aliyun.com. All rights reserved.
+//
+
+#import "OSSDefine.h"
+#import "OSSCompat.h"
+#import "OSSBolts.h"
+#import "OSSModel.h"
+
+@implementation OSSClient (Compat)
+
+- (OSSTaskHandler *)uploadData:(NSData *)data
+               withContentType:(NSString *)contentType
+                withObjectMeta:(NSDictionary *)meta
+                  toBucketName:(NSString *)bucketName
+                   toObjectKey:(NSString *)objectKey
+                   onCompleted:(void(^)(BOOL, NSError *))onCompleted
+                    onProgress:(void(^)(float progress))onProgress {
+
+    OSSTaskHandler * bcts = [OSSCancellationTokenSource cancellationTokenSource];
+
+    [[[OSSTask taskWithResult:nil] continueWithExecutor:self.ossOperationExecutor withSuccessBlock:^id(OSSTask *task) {
+        OSSPutObjectRequest * put = [OSSPutObjectRequest new];
+        put.bucketName = bucketName;
+        put.objectKey = objectKey;
+        put.objectMeta = meta;
+        put.uploadingData = data;
+        put.contentType = contentType;
+
+        put.uploadProgress = ^(int64_t bytesSent, int64_t totalBytesSent, int64_t totalBytesExpectedToSend) {
+            if (totalBytesExpectedToSend) {
+                onProgress((float)totalBytesSent / totalBytesExpectedToSend);
+            }
+        };
+
+        [bcts.token registerCancellationObserverWithBlock:^{
+            [put cancel];
+        }];
+
+        OSSTask * putTask = [self putObject:put];
+        [putTask waitUntilFinished];
+        onProgress(1.0f);
+        return putTask;
+    }] continueWithBlock:^id(OSSTask *task) {
+        if (task.error) {
+            onCompleted(NO, task.error);
+        } else {
+            onCompleted(YES, nil);
+        }
+        return nil;
+    }];
+    return bcts;
+}
+
+- (OSSTaskHandler *)downloadToDataFromBucket:(NSString *)bucketName
+                                 objectKey:(NSString *)objectKey
+                               onCompleted:(void (^)(NSData *, NSError *))onCompleted
+                                onProgress:(void (^)(float))onProgress {
+
+    OSSTaskHandler * bcts = [OSSCancellationTokenSource cancellationTokenSource];
+
+    [[[OSSTask taskWithResult:nil] continueWithExecutor:self.ossOperationExecutor withBlock:^id(OSSTask *task) {
+        OSSGetObjectRequest * get = [OSSGetObjectRequest new];
+        get.bucketName = bucketName;
+        get.objectKey = objectKey;
+
+        get.downloadProgress = ^(int64_t bytesWritten, int64_t totalBytesWritten, int64_t totalBytesExpectedToWrite) {
+            if (totalBytesExpectedToWrite) {
+                onProgress((float)totalBytesWritten / totalBytesExpectedToWrite);
+            }
+        };
+
+        [bcts.token registerCancellationObserverWithBlock:^{
+            [get cancel];
+        }];
+
+        OSSTask * getTask = [self getObject:get];
+        [getTask waitUntilFinished];
+        onProgress(1.0f);
+        return getTask;
+    }] continueWithBlock:^id(OSSTask *task) {
+        if (task.error) {
+            onCompleted(nil, task.error);
+        } else {
+            OSSGetObjectResult * result = task.result;
+            onCompleted(result.downloadedData, nil);
+        }
+        return nil;
+    }];
+
+    return bcts;
+}
+
+- (OSSTaskHandler *)downloadToFileFromBucket:(NSString *)bucketName
+                                 objectKey:(NSString *)objectKey
+                                    toFile:(NSString *)filePath
+                               onCompleted:(void (^)(BOOL, NSError *))onCompleted
+                                onProgress:(void (^)(float))onProgress {
+
+    OSSTaskHandler * bcts = [OSSCancellationTokenSource cancellationTokenSource];
+
+    [[[OSSTask taskWithResult:nil] continueWithExecutor:self.ossOperationExecutor withBlock:^id(OSSTask *task) {
+        OSSGetObjectRequest * get = [OSSGetObjectRequest new];
+        get.bucketName = bucketName;
+        get.objectKey = objectKey;
+        get.downloadToFileURL = [NSURL fileURLWithPath:filePath];
+
+        get.downloadProgress = ^(int64_t bytesWritten, int64_t totalBytesWritten, int64_t totalBytesExpectedToWrite) {
+            if (totalBytesExpectedToWrite) {
+                onProgress((float)totalBytesWritten / totalBytesExpectedToWrite);
+            }
+        };
+
+        [bcts.token registerCancellationObserverWithBlock:^{
+            [get cancel];
+        }];
+
+        OSSTask * getTask = [self getObject:get];
+        [getTask waitUntilFinished];
+        onProgress(1.0f);
+        return getTask;
+    }] continueWithBlock:^id(OSSTask *task) {
+        if (task.error) {
+            onCompleted(NO, task.error);
+        } else {
+            onCompleted(YES, nil);
+        }
+        return nil;
+    }];
+    
+    return bcts;
+}
+
+- (void)deleteObjectInBucket:(NSString *)bucketName
+                   objectKey:(NSString *)objectKey
+                 onCompleted:(void (^)(BOOL, NSError *))onCompleted {
+
+    [[[OSSTask taskWithResult:nil] continueWithExecutor:self.ossOperationExecutor withBlock:^id(OSSTask *task) {
+        OSSDeleteObjectRequest * delete = [OSSDeleteObjectRequest new];
+        delete.bucketName = bucketName;
+        delete.objectKey = objectKey;
+
+        OSSTask * deleteTask = [self deleteObject:delete];
+        [deleteTask waitUntilFinished];
+        return deleteTask;
+    }] continueWithBlock:^id(OSSTask *task) {
+        if (task.error) {
+            onCompleted(NO, task.error);
+        } else {
+            onCompleted(YES, nil);
+        }
+        return nil;
+    }];
+}
+
+- (OSSTaskHandler *)uploadFile:(NSString *)filePath
+               withContentType:(NSString *)contentType
+                withObjectMeta:(NSDictionary *)meta
+                  toBucketName:(NSString *)bucketName
+                   toObjectKey:(NSString *)objectKey
+                   onCompleted:(void (^)(BOOL, NSError *))onCompleted
+                    onProgress:(void (^)(float))onProgress {
+
+    OSSTaskHandler * bcts = [OSSCancellationTokenSource cancellationTokenSource];
+
+    [[[OSSTask taskWithResult:nil] continueWithExecutor:self.ossOperationExecutor withSuccessBlock:^id(OSSTask *task) {
+        OSSPutObjectRequest * put = [OSSPutObjectRequest new];
+        put.bucketName = bucketName;
+        put.objectKey = objectKey;
+        put.objectMeta = meta;
+        put.uploadingFileURL = [NSURL fileURLWithPath:filePath];
+        put.contentType = contentType;
+
+        put.uploadProgress = ^(int64_t bytesSent, int64_t totalBytesSent, int64_t totalBytesExpectedToSend) {
+            if (totalBytesExpectedToSend) {
+                onProgress((float)totalBytesSent / totalBytesExpectedToSend);
+            }
+        };
+
+        [bcts.token registerCancellationObserverWithBlock:^{
+            [put cancel];
+        }];
+
+        OSSTask * putTask = [self putObject:put];
+        [putTask waitUntilFinished];
+        onProgress(1.0f);
+        return putTask;
+    }] continueWithBlock:^id(OSSTask *task) {
+        if (task.error) {
+            onCompleted(NO, task.error);
+        } else {
+            onCompleted(YES, nil);
+        }
+        return nil;
+    }];
+    return bcts;
+}
+
+- (OSSTaskHandler *)resumableUploadFile:(NSString *)filePath
+                        withContentType:(NSString *)contentType
+                         withObjectMeta:(NSDictionary *)meta
+                           toBucketName:(NSString *)bucketName
+                            toObjectKey:(NSString *)objectKey
+                            onCompleted:(void(^)(BOOL, NSError *))onComplete
+                             onProgress:(void(^)(float progress))onProgress {
+
+    OSSTaskHandler * bcts = [OSSCancellationTokenSource cancellationTokenSource];
+
+    [[[OSSTask taskWithResult:nil] continueWithBlock:^id(OSSTask *task) {
+        NSURL * fileURL = [NSURL fileURLWithPath:filePath];
+        NSDate * lastModified;
+        NSError * error;
+        [fileURL getResourceValue:&lastModified forKey:NSURLContentModificationDateKey error:&error];
+        if (error) {
+            return [OSSTask taskWithError:error];
+        }
+        OSSResumableUploadRequest * resumableUpload = [OSSResumableUploadRequest new];
+        resumableUpload.bucketName = bucketName;
+        resumableUpload.deleteUploadIdOnCancelling = NO;//cancel not delete record file
+        resumableUpload.contentType = contentType;
+        resumableUpload.completeMetaHeader = meta;
+        NSString *cachesDir = [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) firstObject];
+        resumableUpload.recordDirectoryPath = cachesDir; //default record file path
+        resumableUpload.uploadingFileURL = fileURL;
+        resumableUpload.objectKey = objectKey;
+        resumableUpload.uploadId = task.result;
+        resumableUpload.uploadingFileURL = [NSURL fileURLWithPath:filePath];
+        __weak OSSResumableUploadRequest * weakRef = resumableUpload;
+        resumableUpload.uploadProgress = ^(int64_t bytesSent, int64_t totalBytesSent, int64_t totalBytesExpectedToSend) {
+            onProgress((float)totalBytesSent/totalBytesExpectedToSend);
+            if (bcts.token.isCancellationRequested || bcts.isCancellationRequested) {
+                [weakRef cancel];
+            }
+            OSSLogDebugNoFile(@"%lld %lld %lld", bytesSent, totalBytesSent, totalBytesExpectedToSend);
+        };
+        return [self resumableUpload:resumableUpload];
+    }] continueWithBlock:^id(OSSTask *task) {
+        if (task.cancelled) {
+            onComplete(NO, [NSError errorWithDomain:OSSClientErrorDomain
+                                               code:OSSClientErrorCodeTaskCancelled
+                                           userInfo:@{OSSErrorMessageTOKEN: @"This task is cancelled"}]);
+        } else if (task.error) {
+            onComplete(NO, task.error);
+        } else if (task.faulted) {
+            onComplete(NO, [NSError errorWithDomain:OSSClientErrorDomain
+                                               code:OSSClientErrorCodeExcpetionCatched
+                                           userInfo:@{OSSErrorMessageTOKEN: [NSString stringWithFormat:@"Catch exception - %@", task.exception]}]);
+        } else {
+            onComplete(YES, nil);
+        }
+        return nil;
+    }];
+    return bcts;
+}
+
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSConstants.h

@@ -0,0 +1,144 @@
+//
+//  OSSConstants.h
+//  AliyunOSSSDK
+//
+//  Created by huaixu on 2018/1/22.
+//  Copyright © 2018年 aliyun. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+typedef NSString* _Nullable (^OSSCustomSignContentBlock) (NSString * contentToSign, NSError **error);
+typedef NSData * _Nullable (^OSSResponseDecoderBlock) (NSData * data);
+
+typedef void (^OSSNetworkingUploadProgressBlock) (int64_t bytesSent, int64_t totalBytesSent, int64_t totalBytesExpectedToSend);
+typedef void (^OSSNetworkingDownloadProgressBlock) (int64_t bytesWritten, int64_t totalBytesWritten, int64_t totalBytesExpectedToWrite);
+typedef void (^OSSNetworkingRetryBlock) (void);
+typedef void (^OSSNetworkingCompletionHandlerBlock) (id _Nullable responseObject, NSError * _Nullable error);
+typedef void (^OSSNetworkingOnRecieveDataBlock) (NSData * data);
+
+/**
+ The flag of verification about crc64
+ */
+typedef NS_ENUM(NSUInteger, OSSRequestCRCFlag) {
+    OSSRequestCRCUninitialized,
+    OSSRequestCRCOpen,
+    OSSRequestCRCClosed
+};
+
+/**
+ Retry type definition
+ */
+typedef NS_ENUM(NSInteger, OSSNetworkingRetryType) {
+    OSSNetworkingRetryTypeUnknown,
+    OSSNetworkingRetryTypeShouldRetry,
+    OSSNetworkingRetryTypeShouldNotRetry,
+    OSSNetworkingRetryTypeShouldRefreshCredentialsAndRetry,
+    OSSNetworkingRetryTypeShouldCorrectClockSkewAndRetry
+};
+
+/**
+ * @brief: The following constants are provided by OSSNetworking as possible operation types.
+ */
+typedef NS_ENUM(NSInteger, OSSOperationType) {
+    OSSOperationTypeGetService,
+    OSSOperationTypeCreateBucket,
+    OSSOperationTypeDeleteBucket,
+    OSSOperationTypeGetBucket,
+    OSSOperationTypeGetBucketInfo,
+    OSSOperationTypeGetBucketACL,
+    OSSOperationTypeHeadObject,
+    OSSOperationTypeGetObject,
+    OSSOperationTypeGetObjectACL,
+    OSSOperationTypePutObject,
+    OSSOperationTypePutObjectACL,
+    OSSOperationTypeAppendObject,
+    OSSOperationTypeDeleteObject,
+    OSSOperationTypeDeleteMultipleObjects,
+    OSSOperationTypeCopyObject,
+    OSSOperationTypeInitMultipartUpload,
+    OSSOperationTypeUploadPart,
+    OSSOperationTypeCompleteMultipartUpload,
+    OSSOperationTypeAbortMultipartUpload,
+    OSSOperationTypeListMultipart,
+    OSSOperationTypeListMultipartUploads,
+    OSSOperationTypeTriggerCallBack,
+    OSSOperationTypeImagePersist,
+    OSSOperationTypeRestoreObject,
+    OSSOperationTypePutSymlink,
+    OSSOperationTypeGetSymlink,
+    OSSOperationTypeGetObjectTagging,
+    OSSOperationTypePutObjectTagging,
+    OSSOperationTypeDeleteObjectTagging,
+};
+
+/**
+ * @brief: The following constants are provided by OSSClient as possible error codes.
+ */
+typedef NS_ENUM(NSInteger, OSSClientErrorCODE) {
+    OSSClientErrorCodeNetworkingFailWithResponseCode0,
+    OSSClientErrorCodeSignFailed,
+    OSSClientErrorCodeFileCantWrite,
+    OSSClientErrorCodeInvalidArgument,
+    OSSClientErrorCodeNilUploadid,
+    OSSClientErrorCodeTaskCancelled,
+    OSSClientErrorCodeNetworkError,
+    OSSClientErrorCodeInvalidCRC,
+    OSSClientErrorCodeCannotResumeUpload,
+    OSSClientErrorCodeExcpetionCatched,
+    OSSClientErrorCodeNotKnown,
+    OSSClientErrorCodeFileCantRead
+};
+
+typedef NS_ENUM(NSInteger, OSSXMLDictionaryAttributesMode)
+{
+    OSSXMLDictionaryAttributesModePrefixed = 0, //default
+    OSSXMLDictionaryAttributesModeDictionary,
+    OSSXMLDictionaryAttributesModeUnprefixed,
+    OSSXMLDictionaryAttributesModeDiscard
+};
+
+
+typedef NS_ENUM(NSInteger, OSSXMLDictionaryNodeNameMode)
+{
+    OSSXMLDictionaryNodeNameModeRootOnly = 0, //default
+    OSSXMLDictionaryNodeNameModeAlways,
+    OSSXMLDictionaryNodeNameModeNever
+};
+
+typedef NS_ENUM(NSInteger, OSSBucketStorageClass)
+{
+    OSSBucketStorageClassStandard,
+    OSSBucketStorageClassIA,
+    OSSBucketStorageClassArchive
+};
+
+typedef NS_ENUM(NSInteger, OSSTerminationMode) {
+    OSSTerminationModeAll = 0,
+    OSSTerminationModeHasError
+};
+
+typedef NSString * OSSXMLDictionaryAttributeName NS_EXTENSIBLE_STRING_ENUM;
+
+OBJC_EXTERN OSSXMLDictionaryAttributeName const OSSXMLDictionaryAttributesKey;
+OBJC_EXTERN OSSXMLDictionaryAttributeName const OSSXMLDictionaryCommentsKey;
+OBJC_EXTERN OSSXMLDictionaryAttributeName const OSSXMLDictionaryTextKey;
+OBJC_EXTERN OSSXMLDictionaryAttributeName const OSSXMLDictionaryNodeNameKey;
+OBJC_EXTERN OSSXMLDictionaryAttributeName const OSSXMLDictionaryAttributePrefix;
+
+OBJC_EXTERN NSString * const OSSHTTPMethodHEAD;
+OBJC_EXTERN NSString * const OSSHTTPMethodGET;
+OBJC_EXTERN NSString * const OSSHTTPMethodPUT;
+OBJC_EXTERN NSString * const OSSHTTPMethodPOST;
+OBJC_EXTERN NSString * const OSSHTTPMethodDELETE;
+
+
+typedef NS_ENUM(NSInteger, OSSSignVersion)
+{
+    OSSSignVersionV1,
+    OSSSignVersionV4
+};
+
+NS_ASSUME_NONNULL_END

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSConstants.m

@@ -0,0 +1,21 @@
+//
+//  OSSConstants.m
+//  AliyunOSSSDK
+//
+//  Created by huaixu on 2018/1/22.
+//  Copyright © 2018年 aliyun. All rights reserved.
+//
+
+#import "OSSConstants.h"
+
+NSString * const OSSXMLDictionaryAttributesKey = @"__attributes";
+NSString * const OSSXMLDictionaryCommentsKey = @"__comments";
+NSString * const OSSXMLDictionaryTextKey = @"__text";
+NSString * const OSSXMLDictionaryNodeNameKey = @"__name";
+NSString * const OSSXMLDictionaryAttributePrefix = @"_";
+
+NSString * const OSSHTTPMethodHEAD = @"HEAD";
+NSString * const OSSHTTPMethodGET = @"GET";
+NSString * const OSSHTTPMethodPUT = @"PUT";
+NSString * const OSSHTTPMethodPOST = @"POST";
+NSString * const OSSHTTPMethodDELETE = @"DELETE";

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSDefine.h

@@ -0,0 +1,108 @@
+//
+//  OSSDefine.h
+//  AliyunOSSiOS
+//
+//  Created by zhouzhuo on 5/1/16.
+//  Copyright © 2016 zhouzhuo. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+
+#ifndef OSSDefine_h
+#define OSSDefine_h
+
+#if TARGET_OS_IOS
+#define OSSUAPrefix                             @"aliyun-sdk-ios"
+#elif TARGET_OS_OSX
+#define OSSUAPrefix                             @"aliyun-sdk-mac"
+#endif
+#define OSSSDKVersion                           @"2.11.0"
+
+#define OSSListBucketResultXMLTOKEN             @"ListBucketResult"
+#define OSSNameXMLTOKEN                         @"Name"
+#define OSSDelimiterXMLTOKEN                    @"Delimiter"
+#define OSSMarkerXMLTOKEN                       @"Marker"
+#define OSSKeyMarkerXMLTOKEN                    @"KeyMarker"
+#define OSSNextMarkerXMLTOKEN                   @"NextMarker"
+#define OSSNextKeyMarkerXMLTOKEN                @"NextKeyMarker"
+#define OSSUploadIdMarkerXMLTOKEN               @"UploadIdMarker"
+#define OSSNextUploadIdMarkerXMLTOKEN           @"NextUploadIdMarker"
+#define OSSMaxKeysXMLTOKEN                      @"MaxKeys"
+#define OSSMaxUploadsXMLTOKEN                   @"MaxUploads"
+#define OSSIsTruncatedXMLTOKEN                  @"IsTruncated"
+#define OSSContentsXMLTOKEN                     @"Contents"
+#define OSSUploadXMLTOKEN                       @"Upload"
+#define OSSKeyXMLTOKEN                          @"Key"
+#define OSSLastModifiedXMLTOKEN                 @"LastModified"
+#define OSSETagXMLTOKEN                         @"ETag"
+#define OSSTypeXMLTOKEN                         @"Type"
+#define OSSSizeXMLTOKEN                         @"Size"
+#define OSSStorageClassXMLTOKEN                 @"StorageClass"
+#define OSSCommonPrefixesXMLTOKEN               @"CommonPrefixes"
+#define OSSOwnerXMLTOKEN                        @"Owner"
+#define OSSAccessControlListXMLTOKEN            @"AccessControlList"
+#define OSSGrantXMLTOKEN                        @"Grant"
+#define OSSIDXMLTOKEN                           @"ID"
+#define OSSDisplayNameXMLTOKEN                  @"DisplayName"
+#define OSSBucketsXMLTOKEN                      @"Buckets"
+#define OSSBucketXMLTOKEN                       @"Bucket"
+#define OSSCreationDate                         @"CreationDate"
+#define OSSPrefixXMLTOKEN                       @"Prefix"
+#define OSSUploadIdXMLTOKEN                     @"UploadId"
+#define OSSLocationXMLTOKEN                     @"Location"
+#define OSSNextPartNumberMarkerXMLTOKEN         @"NextPartNumberMarker"
+#define OSSMaxPartsXMLTOKEN                     @"MaxParts"
+#define OSSPartXMLTOKEN                         @"Part"
+#define OSSPartNumberXMLTOKEN                   @"PartNumber"
+
+#define OSSClientErrorDomain                    @"com.aliyun.oss.clientError"
+#define OSSServerErrorDomain                    @"com.aliyun.oss.serverError"
+
+#define OSSErrorMessageTOKEN                    @"ErrorMessage"
+#define OSSNetworkTaskMetrics                   @"NetworkTaskMetrics"
+
+#define OSSHttpHeaderContentDisposition         @"Content-Disposition"
+#define OSSHttpHeaderXOSSCallback               @"x-oss-callback"
+#define OSSHttpHeaderXOSSCallbackVar            @"x-oss-callback-var"
+#define OSSHttpHeaderContentEncoding            @"Content-Encoding"
+#define OSSHttpHeaderContentType                @"Content-Type"
+#define OSSHttpHeaderContentMD5                 @"Content-MD5"
+#define OSSHttpHeaderCacheControl               @"Cache-Control"
+#define OSSHttpHeaderExpires                    @"Expires"
+#define OSSHttpHeaderHashSHA1                   @"x-oss-hash-sha1"
+#define OSSHttpHeaderBucketACL                  @"x-oss-acl"
+#define OSSHttpHeaderObjectACL                  @"x-oss-object-acl"
+#define OSSHttpHeaderCopySource                 @"x-oss-copy-source"
+#define OSSHttpHeaderSymlinkTarget              @"x-oss-symlink-target"
+#define OSSHttpHeaderDate                       @"Date"
+#define OSSHttpHeaderDateEx                     @"x-oss-date"
+#define OSSHttpHeaderSecurityToken              @"x-oss-security-token"
+#define OSSHttpHeaderAuthorization              @"Authorization"
+#define OSSHttpHeaderHost                       @"Host"
+#define OSSHttpHeaderContentSha256              @"x-oss-content-sha256"
+
+#define OSSRequestParameterExpires              @"Expires"
+#define OSSRequestParameterAccessKeyId          @"OSSAccessKeyId"
+#define OSSRequestParameterSignature            @"Signature"
+
+#define OSSHttpQueryProcess                     @"x-oss-process"
+#define OSSPrefix                               @"x-oss-"
+
+#define OSSDefaultRetryCount                    3
+#define OSSDefaultMaxConcurrentNum              5
+#define OSSDefaultTimeoutForRequestInSecond     15
+#define OSSDefaultTimeoutForResourceInSecond    7 * 24 * 60 * 60
+#define OSSDefaultThreadNum                     5
+
+#define OSSAuthorizationPrefix                  @"OSS "
+
+#define OSSProductDefault                       @"oss"
+#define OSSProductCloudBox                      @"oss-cloudbox"
+
+#define OSSContentStringToSign                  @"stringToSign"
+#define OSSContentDate                          @"date"
+#define OSSContentAlgorithm                     @"algorithm"
+#define OSSContentRegion                        @"region"
+#define OSSContentProduct                       @"product"
+
+#endif /* OSSDefine_h */

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSDeleteMultipleObjectsRequest.h

@@ -0,0 +1,31 @@
+//
+//  OSSDeleteMultipleObjectsRequest.h
+//  AliyunOSSSDK
+//
+//  Created by huaixu on 2018/1/26.
+//  Copyright © 2018年 aliyun. All rights reserved.
+//
+#import <Foundation/Foundation.h>
+#import "OSSRequest.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface OSSDeleteMultipleObjectsRequest : OSSRequest
+
+@property (nonatomic, copy) NSString *bucketName;
+
+@property (nonatomic, copy) NSArray<NSString *> *keys;
+
+/**
+ invalid value is @"url"
+ */
+@property (nonatomic, copy, nullable) NSString *encodingType;
+
+/**
+ whether to show verbose result,the default value is YES.
+ */
+@property (nonatomic, assign) BOOL quiet;
+
+@end
+
+NS_ASSUME_NONNULL_END

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSDeleteMultipleObjectsRequest.m

@@ -0,0 +1,22 @@
+//
+//  OSSDeleteMultipleObjectsRequest.m
+//  AliyunOSSSDK
+//
+//  Created by huaixu on 2018/1/26.
+//  Copyright © 2018年 aliyun. All rights reserved.
+//
+
+#import "OSSDeleteMultipleObjectsRequest.h"
+
+@implementation OSSDeleteMultipleObjectsRequest
+
+- (instancetype)init
+{
+    self = [super init];
+    if (self) {
+        _quiet = YES;
+    }
+    return self;
+}
+
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSDeleteMultipleObjectsResult.h

@@ -0,0 +1,17 @@
+//
+//  OSSDeleteMultipleObjectsResult.h
+//  AliyunOSSSDK
+//
+//  Created by huaixu on 2018/1/26.
+//  Copyright © 2018年 aliyun. All rights reserved.
+//
+
+#import "OSSResult.h"
+
+@interface OSSDeleteMultipleObjectsResult : OSSResult
+
+@property (nonatomic, copy) NSArray<NSString *> *deletedObjects;
+
+@property (nonatomic, copy) NSString *encodingType;
+
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSDeleteMultipleObjectsResult.m

@@ -0,0 +1,13 @@
+//
+//  OSSDeleteMultipleObjectsResult.m
+//  AliyunOSSSDK
+//
+//  Created by huaixu on 2018/1/26.
+//  Copyright © 2018年 aliyun. All rights reserved.
+//
+
+#import "OSSDeleteMultipleObjectsResult.h"
+
+@implementation OSSDeleteMultipleObjectsResult
+
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSDeleteObjectTaggingRequest.h

@@ -0,0 +1,23 @@
+//
+//  OSSDeleteObjectTaggingRequest.h
+//  AliyunOSSSDK
+//
+//  Created by ws on 2021/5/25.
+//  Copyright © 2021 aliyun. All rights reserved.
+//
+
+#import "OSSRequest.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface OSSDeleteObjectTaggingRequest : OSSRequest
+
+/* bucket name */
+@property (nonatomic, copy) NSString *bucketName;
+
+/* object name */
+@property (nonatomic, copy) NSString *objectKey;
+
+@end
+
+NS_ASSUME_NONNULL_END

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSDeleteObjectTaggingRequest.m

@@ -0,0 +1,17 @@
+//
+//  OSSDeleteObjectTaggingRequest.m
+//  AliyunOSSSDK
+//
+//  Created by ws on 2021/5/25.
+//  Copyright © 2021 aliyun. All rights reserved.
+//
+
+#import "OSSDeleteObjectTaggingRequest.h"
+
+@implementation OSSDeleteObjectTaggingRequest
+
+- (NSDictionary *)requestParams {
+    return @{@"tagging": @""};
+}
+
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSDeleteObjectTaggingResult.h

@@ -0,0 +1,17 @@
+//
+//  OSSDeleteObjectTaggingResult.h
+//  AliyunOSSSDK
+//
+//  Created by ws on 2021/5/25.
+//  Copyright © 2021 aliyun. All rights reserved.
+//
+
+#import "OSSResult.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface OSSDeleteObjectTaggingResult : OSSResult
+
+@end
+
+NS_ASSUME_NONNULL_END

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSDeleteObjectTaggingResult.m

@@ -0,0 +1,13 @@
+//
+//  OSSDeleteObjectTaggingResult.m
+//  AliyunOSSSDK
+//
+//  Created by ws on 2022/8/4.
+//  Copyright © 2022 aliyun. All rights reserved.
+//
+
+#import "OSSDeleteObjectTaggingResult.h"
+
+@implementation OSSDeleteObjectTaggingResult
+
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSFileLog/OSSCocoaLumberjack.h

@@ -0,0 +1,75 @@
+// Software License Agreement (BSD License)
+//
+// Copyright (c) 2010-2016, Deusty, LLC
+// All rights reserved.
+//
+// Redistribution and use of this software in source and binary forms,
+// with or without modification, are permitted provided that the following conditions are met:
+//
+// * Redistributions of source code must retain the above copyright notice,
+//   this list of conditions and the following disclaimer.
+//
+// * Neither the name of Deusty nor the names of its contributors may be used
+//   to endorse or promote products derived from this software without specific
+//   prior written permission of Deusty, LLC.
+
+/**
+ * Welcome to CocoaLumberjack!
+ *
+ * The project page has a wealth of documentation if you have any questions.
+ *
+ * If you're new to the project you may wish to read "Getting Started" at:
+ * Documentation/GettingStarted.md
+ *
+ * Otherwise, here is a quick refresher.
+ * There are three steps to using the macros:
+ *
+ * Step 1:
+ * Import the header in your implementation or prefix file:
+ *
+ * #import <CocoaLumberjack/CocoaLumberjack.h>
+ *
+ * Step 2:
+ * Define your logging level in your implementation file:
+ *
+ * // Log levels: off, error, warn, info, verbose
+ * static const DDLogLevel ddLogLevel = DDLogLevelVerbose;
+ *
+ * Step 2 [3rd party frameworks]:
+ *
+ * Define your LOG_LEVEL_DEF to a different variable/function than ddLogLevel:
+ *
+ * // #undef LOG_LEVEL_DEF // Undefine first only if needed
+ * #define LOG_LEVEL_DEF myLibLogLevel
+ *
+ * Define your logging level in your implementation file:
+ *
+ * // Log levels: off, error, warn, info, verbose
+ * static const DDLogLevel myLibLogLevel = DDLogLevelVerbose;
+ *
+ * Step 3:
+ * Replace your NSLog statements with DDLog statements according to the severity of the message.
+ *
+ * NSLog(@"Fatal error, no dohickey found!"); -> OSSLogError(@"Fatal error, no dohickey found!");
+ *
+ * DDLog works exactly the same as NSLog.
+ * This means you can pass it multiple variables just like NSLog.
+ **/
+
+#import <Foundation/Foundation.h>
+
+// Disable legacy macros
+#ifndef OSSDD_LEGACY_MACROS
+    #define OSSDD_LEGACY_MACROS 0
+#endif
+
+// Core
+#import "OSSDDLog.h"
+
+// Main macros
+#import "OSSLogMacros.h"
+
+// Loggers
+#import "OSSFileLogger.h"
+#import "OSSNSLogger.h"
+

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSFileLog/OSSDDLog.h

@@ -0,0 +1,860 @@
+// Software License Agreement (BSD License)
+//
+// Copyright (c) 2010-2016, Deusty, LLC
+// All rights reserved.
+//
+// Redistribution and use of this software in source and binary forms,
+// with or without modification, are permitted provided that the following conditions are met:
+//
+// * Redistributions of source code must retain the above copyright notice,
+//   this list of conditions and the following disclaimer.
+//
+// * Neither the name of Deusty nor the names of its contributors may be used
+//   to endorse or promote products derived from this software without specific
+//   prior written permission of Deusty, LLC.
+
+#import <Foundation/Foundation.h>
+
+// Enable 1.9.x legacy macros if imported directly
+#ifndef OSSDD_LEGACY_MACROS
+    #define OSSDD_LEGACY_MACROS 1
+#endif
+
+#if OS_OBJECT_USE_OBJC
+    #define DISPATCH_QUEUE_REFERENCE_TYPE strong
+#else
+    #define DISPATCH_QUEUE_REFERENCE_TYPE assign
+#endif
+
+@class OSSDDLogMessage;
+@class OSSDDLoggerInformation;
+@protocol OSSDDLogger;
+@protocol OSSDDLogFormatter;
+
+/**
+ * Define the standard options.
+ *
+ * We default to only 4 levels because it makes it easier for beginners
+ * to make the transition to a logging framework.
+ *
+ * More advanced users may choose to completely customize the levels (and level names) to suite their needs.
+ * For more information on this see the "Custom Log Levels" page:
+ * Documentation/CustomLogLevels.md
+ *
+ * Advanced users may also notice that we're using a bitmask.
+ * This is to allow for custom fine grained logging:
+ * Documentation/FineGrainedLogging.md
+ *
+ * -- Flags --
+ *
+ * Typically you will use the LOG_LEVELS (see below), but the flags may be used directly in certain situations.
+ * For example, say you have a lot of warning log messages, and you wanted to disable them.
+ * However, you still needed to see your error and info log messages.
+ * You could accomplish that with the following:
+ *
+ * static const DDLogLevel ddLogLevel = DDLogFlagError | DDLogFlagInfo;
+ *
+ * When LOG_LEVEL_DEF is defined as ddLogLevel.
+ *
+ * Flags may also be consulted when writing custom log formatters,
+ * as the DDLogMessage class captures the individual flag that caused the log message to fire.
+ *
+ * -- Levels --
+ *
+ * Log levels are simply the proper bitmask of the flags.
+ *
+ * -- Booleans --
+ *
+ * The booleans may be used when your logging code involves more than one line.
+ * For example:
+ *
+ * if (LOG_VERBOSE) {
+ *     for (id sprocket in sprockets)
+ *         DDLogVerbose(@"sprocket: %@", [sprocket description])
+ * }
+ *
+ * -- Async --
+ *
+ * Defines the default asynchronous options.
+ * The default philosophy for asynchronous logging is very simple:
+ *
+ * Log messages with errors should be executed synchronously.
+ *     After all, an error just occurred. The application could be unstable.
+ *
+ * All other log messages, such as debug output, are executed asynchronously.
+ *     After all, if it wasn't an error, then it was just informational output,
+ *     or something the application was easily able to recover from.
+ *
+ * -- Changes --
+ *
+ * You are strongly discouraged from modifying this file.
+ * If you do, you make it more difficult on yourself to merge future bug fixes and improvements from the project.
+ * Instead, create your own MyLogging.h or ApplicationNameLogging.h or CompanyLogging.h
+ *
+ * For an example of customizing your logging experience, see the "Custom Log Levels" page:
+ * Documentation/CustomLogLevels.md
+ **/
+
+/**
+ *  Flags accompany each log. They are used together with levels to filter out logs.
+ */
+typedef NS_OPTIONS(NSUInteger, OSSDDLogFlag){
+    /**
+     *  0...00001 DDLogFlagError
+     */
+    OSSDDLogFlagError      = (1 << 0),
+    
+    /**
+     *  0...00010 DDLogFlagWarning
+     */
+    OSSDDLogFlagWarning    = (1 << 1),
+    
+    /**
+     *  0...00100 DDLogFlagInfo
+     */
+    OSSDDLogFlagInfo       = (1 << 2),
+    
+    /**
+     *  0...01000 DDLogFlagDebug
+     */
+    OSSDDLogFlagDebug      = (1 << 3),
+    
+    /**
+     *  0...10000 DDLogFlagVerbose
+     */
+    OSSDDLogFlagVerbose    = (1 << 4)
+};
+
+/**
+ *  Log levels are used to filter out logs. Used together with flags.
+ */
+typedef NS_ENUM(NSUInteger, OSSDDLogLevel){
+    /**
+     *  No logs
+     */
+    OSSDDLogLevelOff       = 0,
+    
+    /**
+     *  Error logs only
+     */
+    OSSDDLogLevelError     = (OSSDDLogFlagError),
+    
+    /**
+     *  Error and warning logs
+     */
+    OSSDDLogLevelWarning   = (OSSDDLogLevelError   | OSSDDLogFlagWarning),
+    
+    /**
+     *  Error, warning and info logs
+     */
+    OSSDDLogLevelInfo      = (OSSDDLogLevelWarning | OSSDDLogFlagInfo),
+    
+    /**
+     *  Error, warning, info and debug logs
+     */
+    OSSDDLogLevelDebug     = (OSSDDLogLevelInfo    | OSSDDLogFlagDebug),
+    
+    /**
+     *  Error, warning, info, debug and verbose logs
+     */
+    OSSDDLogLevelVerbose   = (OSSDDLogLevelDebug   | OSSDDLogFlagVerbose),
+    
+    /**
+     *  All logs (1...11111)
+     */
+    OSSDDLogLevelAll       = NSUIntegerMax
+};
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+ *  Extracts just the file name, no path or extension
+ *
+ *  @param filePath input file path
+ *  @param copy     YES if we want the result to be copied
+ *
+ *  @return the file name
+ */
+NSString * __nullable OSSDDExtractFileNameWithoutExtension(const char *filePath, BOOL copy);
+
+/**
+ * The THIS_FILE macro gives you an NSString of the file name.
+ * For simplicity and clarity, the file name does not include the full path or file extension.
+ *
+ * For example: DDLogWarn(@"%@: Unable to find thingy", THIS_FILE) -> @"MyViewController: Unable to find thingy"
+ **/
+#define THIS_FILE         (DDExtractFileNameWithoutExtension(__FILE__, NO))
+
+/**
+ * The THIS_METHOD macro gives you the name of the current objective-c method.
+ *
+ * For example: DDLogWarn(@"%@ - Requires non-nil strings", THIS_METHOD) -> @"setMake:model: requires non-nil strings"
+ *
+ * Note: This does NOT work in straight C functions (non objective-c).
+ * Instead you should use the predefined __FUNCTION__ macro.
+ **/
+#define THIS_METHOD       NSStringFromSelector(_cmd)
+
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark -
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+/**
+ *  The main class, exposes all logging mechanisms, loggers, ...
+ *  For most of the users, this class is hidden behind the logging functions like `DDLogInfo`
+ */
+@interface OSSDDLog : NSObject
+
+/**
+ *  Returns the singleton `DDLog`.
+ *  The instance is used by `DDLog` class methods.
+ */
+@property (class, nonatomic, strong, readonly) OSSDDLog *sharedInstance;
+
+/**
+ * Provides access to the underlying logging queue.
+ * This may be helpful to Logger classes for things like thread synchronization.
+ **/
+@property (class, nonatomic, DISPATCH_QUEUE_REFERENCE_TYPE, readonly) dispatch_queue_t loggingQueue;
+
+/**
+ * Logging Primitive.
+ *
+ * This method is used by the macros or logging functions.
+ * It is suggested you stick with the macros as they're easier to use.
+ *
+ *  @param asynchronous YES if the logging is done async, NO if you want to force sync
+ *  @param level        the log level
+ *  @param flag         the log flag
+ *  @param context      the context (if any is defined)
+ *  @param file         the current file
+ *  @param function     the current function
+ *  @param line         the current code line
+ *  @param tag          potential tag
+ *  @param format       the log format
+ */
++ (void)log:(BOOL)asynchronous
+      level:(OSSDDLogLevel)level
+       flag:(OSSDDLogFlag)flag
+    context:(NSInteger)context
+       file:(const char *)file
+   function:(const char *)function
+       line:(NSUInteger)line
+        tag:(id __nullable)tag
+     format:(NSString *)format, ... NS_FORMAT_FUNCTION(9,10);
+
+/**
+ * Logging Primitive.
+ *
+ * This method is used by the macros or logging functions.
+ * It is suggested you stick with the macros as they're easier to use.
+ *
+ *  @param asynchronous YES if the logging is done async, NO if you want to force sync
+ *  @param level        the log level
+ *  @param flag         the log flag
+ *  @param context      the context (if any is defined)
+ *  @param file         the current file
+ *  @param function     the current function
+ *  @param line         the current code line
+ *  @param tag          potential tag
+ *  @param format       the log format
+ */
+- (void)log:(BOOL)asynchronous
+      level:(OSSDDLogLevel)level
+       flag:(OSSDDLogFlag)flag
+    context:(NSInteger)context
+       file:(const char *)file
+   function:(const char *)function
+       line:(NSUInteger)line
+        tag:(id __nullable)tag
+     format:(NSString *)format, ... NS_FORMAT_FUNCTION(9,10);
+
+/**
+ * Logging Primitive.
+ *
+ * This method can be used if you have a prepared va_list.
+ * Similar to `log:level:flag:context:file:function:line:tag:format:...`
+ *
+ *  @param asynchronous YES if the logging is done async, NO if you want to force sync
+ *  @param level        the log level
+ *  @param flag         the log flag
+ *  @param context      the context (if any is defined)
+ *  @param file         the current file
+ *  @param function     the current function
+ *  @param line         the current code line
+ *  @param tag          potential tag
+ *  @param format       the log format
+ *  @param argList      the arguments list as a va_list
+ */
++ (void)log:(BOOL)asynchronous
+      level:(OSSDDLogLevel)level
+       flag:(OSSDDLogFlag)flag
+    context:(NSInteger)context
+       file:(const char *)file
+   function:(const char *)function
+       line:(NSUInteger)line
+        tag:(id __nullable)tag
+     format:(NSString *)format
+       args:(va_list)argList NS_SWIFT_NAME(log(asynchronous:level:flag:context:file:function:line:tag:format:arguments:));
+
+/**
+ * Logging Primitive.
+ *
+ * This method can be used if you have a prepared va_list.
+ * Similar to `log:level:flag:context:file:function:line:tag:format:...`
+ *
+ *  @param asynchronous YES if the logging is done async, NO if you want to force sync
+ *  @param level        the log level
+ *  @param flag         the log flag
+ *  @param context      the context (if any is defined)
+ *  @param file         the current file
+ *  @param function     the current function
+ *  @param line         the current code line
+ *  @param tag          potential tag
+ *  @param format       the log format
+ *  @param argList      the arguments list as a va_list
+ */
+- (void)log:(BOOL)asynchronous
+      level:(OSSDDLogLevel)level
+       flag:(OSSDDLogFlag)flag
+    context:(NSInteger)context
+       file:(const char *)file
+   function:(const char *)function
+       line:(NSUInteger)line
+        tag:(id __nullable)tag
+     format:(NSString *)format
+       args:(va_list)argList NS_SWIFT_NAME(log(asynchronous:level:flag:context:file:function:line:tag:format:arguments:));
+
+/**
+ * Logging Primitive.
+ *
+ * This method can be used if you manualy prepared DDLogMessage.
+ *
+ *  @param asynchronous YES if the logging is done async, NO if you want to force sync
+ *  @param logMessage   the log message stored in a `DDLogMessage` model object
+ */
++ (void)log:(BOOL)asynchronous
+    message:(OSSDDLogMessage *)logMessage NS_SWIFT_NAME(log(asynchronous:message:));
+
+/**
+ * Logging Primitive.
+ *
+ * This method can be used if you manualy prepared DDLogMessage.
+ *
+ *  @param asynchronous YES if the logging is done async, NO if you want to force sync
+ *  @param logMessage   the log message stored in a `DDLogMessage` model object
+ */
+- (void)log:(BOOL)asynchronous
+    message:(OSSDDLogMessage *)logMessage NS_SWIFT_NAME(log(asynchronous:message:));
+
+/**
+ * Since logging can be asynchronous, there may be times when you want to flush the logs.
+ * The framework invokes this automatically when the application quits.
+ **/
++ (void)flushLog;
+
+/**
+ * Since logging can be asynchronous, there may be times when you want to flush the logs.
+ * The framework invokes this automatically when the application quits.
+ **/
+- (void)flushLog;
+
+/**
+ * Loggers
+ *
+ * In order for your log statements to go somewhere, you should create and add a logger.
+ *
+ * You can add multiple loggers in order to direct your log statements to multiple places.
+ * And each logger can be configured separately.
+ * So you could have, for example, verbose logging to the console, but a concise log file with only warnings & errors.
+ **/
+
+/**
+ * Adds the logger to the system.
+ *
+ * This is equivalent to invoking `[DDLog addLogger:logger withLogLevel:DDLogLevelAll]`.
+ **/
++ (void)addLogger:(id <OSSDDLogger>)logger;
+
+/**
+ * Adds the logger to the system.
+ *
+ * This is equivalent to invoking `[DDLog addLogger:logger withLogLevel:DDLogLevelAll]`.
+ **/
+- (void)addLogger:(id <OSSDDLogger>)logger;
+
+/**
+ * Adds the logger to the system.
+ *
+ * The level that you provide here is a preemptive filter (for performance).
+ * That is, the level specified here will be used to filter out logMessages so that
+ * the logger is never even invoked for the messages.
+ *
+ * More information:
+ * When you issue a log statement, the logging framework iterates over each logger,
+ * and checks to see if it should forward the logMessage to the logger.
+ * This check is done using the level parameter passed to this method.
+ *
+ * For example:
+ *
+ * `[DDLog addLogger:consoleLogger withLogLevel:DDLogLevelVerbose];`
+ * `[DDLog addLogger:fileLogger    withLogLevel:DDLogLevelWarning];`
+ *
+ * `DDLogError(@"oh no");` => gets forwarded to consoleLogger & fileLogger
+ * `DDLogInfo(@"hi");`     => gets forwarded to consoleLogger only
+ *
+ * It is important to remember that Lumberjack uses a BITMASK.
+ * Many developers & third party frameworks may define extra log levels & flags.
+ * For example:
+ *
+ * `#define SOME_FRAMEWORK_LOG_FLAG_TRACE (1 << 6) // 0...1000000`
+ *
+ * So if you specify `DDLogLevelVerbose` to this method, you won't see the framework's trace messages.
+ *
+ * `(SOME_FRAMEWORK_LOG_FLAG_TRACE & DDLogLevelVerbose) => (01000000 & 00011111) => NO`
+ *
+ * Consider passing `DDLogLevelAll` to this method, which has all bits set.
+ * You can also use the exclusive-or bitwise operator to get a bitmask that has all flags set,
+ * except the ones you explicitly don't want. For example, if you wanted everything except verbose & debug:
+ *
+ * `((DDLogLevelAll ^ DDLogLevelVerbose) | DDLogLevelInfo)`
+ **/
++ (void)addLogger:(id <OSSDDLogger>)logger withLevel:(OSSDDLogLevel)level;
+
+/**
+ * Adds the logger to the system.
+ *
+ * The level that you provide here is a preemptive filter (for performance).
+ * That is, the level specified here will be used to filter out logMessages so that
+ * the logger is never even invoked for the messages.
+ *
+ * More information:
+ * When you issue a log statement, the logging framework iterates over each logger,
+ * and checks to see if it should forward the logMessage to the logger.
+ * This check is done using the level parameter passed to this method.
+ *
+ * For example:
+ *
+ * `[DDLog addLogger:consoleLogger withLogLevel:DDLogLevelVerbose];`
+ * `[DDLog addLogger:fileLogger    withLogLevel:DDLogLevelWarning];`
+ *
+ * `DDLogError(@"oh no");` => gets forwarded to consoleLogger & fileLogger
+ * `DDLogInfo(@"hi");`     => gets forwarded to consoleLogger only
+ *
+ * It is important to remember that Lumberjack uses a BITMASK.
+ * Many developers & third party frameworks may define extra log levels & flags.
+ * For example:
+ *
+ * `#define SOME_FRAMEWORK_LOG_FLAG_TRACE (1 << 6) // 0...1000000`
+ *
+ * So if you specify `DDLogLevelVerbose` to this method, you won't see the framework's trace messages.
+ *
+ * `(SOME_FRAMEWORK_LOG_FLAG_TRACE & DDLogLevelVerbose) => (01000000 & 00011111) => NO`
+ *
+ * Consider passing `DDLogLevelAll` to this method, which has all bits set.
+ * You can also use the exclusive-or bitwise operator to get a bitmask that has all flags set,
+ * except the ones you explicitly don't want. For example, if you wanted everything except verbose & debug:
+ *
+ * `((DDLogLevelAll ^ DDLogLevelVerbose) | DDLogLevelInfo)`
+ **/
+- (void)addLogger:(id <OSSDDLogger>)logger withLevel:(OSSDDLogLevel)level;
+
+/**
+ *  Remove the logger from the system
+ */
++ (void)removeLogger:(id <OSSDDLogger>)logger;
+
+/**
+ *  Remove the logger from the system
+ */
+- (void)removeLogger:(id <OSSDDLogger>)logger;
+
+/**
+ *  Remove all the current loggers
+ */
++ (void)removeAllLoggers;
+
+/**
+ *  Remove all the current loggers
+ */
+- (void)removeAllLoggers;
+
+/**
+ *  Return all the current loggers
+ */
+@property (class, nonatomic, copy, readonly) NSArray<id<OSSDDLogger>> *allLoggers;
+
+/**
+ *  Return all the current loggers
+ */
+@property (nonatomic, copy, readonly) NSArray<id<OSSDDLogger>> *allLoggers;
+
+/**
+ *  Return all the current loggers with their level (aka DDLoggerInformation).
+ */
+@property (class, nonatomic, copy, readonly) NSArray<OSSDDLoggerInformation *> *allLoggersWithLevel;
+
+/**
+ *  Return all the current loggers with their level (aka DDLoggerInformation).
+ */
+@property (nonatomic, copy, readonly) NSArray<OSSDDLoggerInformation *> *allLoggersWithLevel;
+
+@end
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark -
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+/**
+ *  This protocol describes a basic logger behavior. 
+ *  Basically, it can log messages, store a logFormatter plus a bunch of optional behaviors.
+ *  (i.e. flush, get its loggerQueue, get its name, ...
+ */
+@protocol OSSDDLogger <NSObject>
+
+/**
+ *  The log message method
+ *
+ *  @param logMessage the message (model)
+ */
+- (void)logMessage:(OSSDDLogMessage *)logMessage NS_SWIFT_NAME(log(message:));
+
+/**
+ * Formatters may optionally be added to any logger.
+ *
+ * If no formatter is set, the logger simply logs the message as it is given in logMessage,
+ * or it may use its own built in formatting style.
+ **/
+@property (nonatomic, strong) id <OSSDDLogFormatter> logFormatter;
+
+@optional
+
+/**
+ * Since logging is asynchronous, adding and removing loggers is also asynchronous.
+ * In other words, the loggers are added and removed at appropriate times with regards to log messages.
+ *
+ * - Loggers will not receive log messages that were executed prior to when they were added.
+ * - Loggers will not receive log messages that were executed after they were removed.
+ *
+ * These methods are executed in the logging thread/queue.
+ * This is the same thread/queue that will execute every logMessage: invocation.
+ * Loggers may use these methods for thread synchronization or other setup/teardown tasks.
+ **/
+- (void)didAddLogger;
+
+/**
+ * Since logging is asynchronous, adding and removing loggers is also asynchronous.
+ * In other words, the loggers are added and removed at appropriate times with regards to log messages.
+ *
+ * - Loggers will not receive log messages that were executed prior to when they were added.
+ * - Loggers will not receive log messages that were executed after they were removed.
+ *
+ * These methods are executed in the logging thread/queue given in parameter.
+ * This is the same thread/queue that will execute every logMessage: invocation.
+ * Loggers may use the queue parameter to set specific values on the queue with dispatch_set_specific() function.
+ **/
+- (void)didAddLoggerInQueue:(dispatch_queue_t)queue;
+
+/**
+ *  See the above description for `didAddLoger`
+ */
+- (void)willRemoveLogger;
+
+/**
+ * Some loggers may buffer IO for optimization purposes.
+ * For example, a database logger may only save occasionaly as the disk IO is slow.
+ * In such loggers, this method should be implemented to flush any pending IO.
+ *
+ * This allows invocations of DDLog's flushLog method to be propogated to loggers that need it.
+ *
+ * Note that DDLog's flushLog method is invoked automatically when the application quits,
+ * and it may be also invoked manually by the developer prior to application crashes, or other such reasons.
+ **/
+- (void)flush;
+
+/**
+ * Each logger is executed concurrently with respect to the other loggers.
+ * Thus, a dedicated dispatch queue is used for each logger.
+ * Logger implementations may optionally choose to provide their own dispatch queue.
+ **/
+@property (nonatomic, DISPATCH_QUEUE_REFERENCE_TYPE, readonly) dispatch_queue_t loggerQueue;
+
+/**
+ * If the logger implementation does not choose to provide its own queue,
+ * one will automatically be created for it.
+ * The created queue will receive its name from this method.
+ * This may be helpful for debugging or profiling reasons.
+ **/
+@property (nonatomic, readonly) NSString *loggerName;
+
+@end
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark -
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+/**
+ *  This protocol describes the behavior of a log formatter
+ */
+@protocol OSSDDLogFormatter <NSObject>
+@required
+
+/**
+ * Formatters may optionally be added to any logger.
+ * This allows for increased flexibility in the logging environment.
+ * For example, log messages for log files may be formatted differently than log messages for the console.
+ *
+ * For more information about formatters, see the "Custom Formatters" page:
+ * Documentation/CustomFormatters.md
+ *
+ * The formatter may also optionally filter the log message by returning nil,
+ * in which case the logger will not log the message.
+ **/
+- (NSString * __nullable)formatLogMessage:(OSSDDLogMessage *)logMessage NS_SWIFT_NAME(format(message:));
+
+@optional
+
+/**
+ * A single formatter instance can be added to multiple loggers.
+ * These methods provides hooks to notify the formatter of when it's added/removed.
+ *
+ * This is primarily for thread-safety.
+ * If a formatter is explicitly not thread-safe, it may wish to throw an exception if added to multiple loggers.
+ * Or if a formatter has potentially thread-unsafe code (e.g. NSDateFormatter),
+ * it could possibly use these hooks to switch to thread-safe versions of the code.
+ **/
+- (void)didAddToLogger:(id <OSSDDLogger>)logger;
+
+/**
+ * A single formatter instance can be added to multiple loggers.
+ * These methods provides hooks to notify the formatter of when it's added/removed.
+ *
+ * This is primarily for thread-safety.
+ * If a formatter is explicitly not thread-safe, it may wish to throw an exception if added to multiple loggers.
+ * Or if a formatter has potentially thread-unsafe code (e.g. NSDateFormatter),
+ * it could possibly use these hooks to switch to thread-safe versions of the code or use dispatch_set_specific()
+.* to add its own specific values.
+ **/
+- (void)didAddToLogger:(id <OSSDDLogger>)logger inQueue:(dispatch_queue_t)queue;
+
+/**
+ *  See the above description for `didAddToLogger:`
+ */
+- (void)willRemoveFromLogger:(id <OSSDDLogger>)logger;
+
+@end
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark -
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+/**
+ *  This protocol describes a dynamic logging component
+ */
+@protocol OSSDDRegisteredDynamicLogging
+
+/**
+ * Implement these methods to allow a file's log level to be managed from a central location.
+ *
+ * This is useful if you'd like to be able to change log levels for various parts
+ * of your code from within the running application.
+ *
+ * Imagine pulling up the settings for your application,
+ * and being able to configure the logging level on a per file basis.
+ *
+ * The implementation can be very straight-forward:
+ *
+ * ```
+ * + (int)ddLogLevel
+ * {
+ *     return ddLogLevel;
+ * }
+ *
+ * + (void)ddSetLogLevel:(DDLogLevel)level
+ * {
+ *     ddLogLevel = level;
+ * }
+ * ```
+ **/
+@property (class, nonatomic, readwrite, setter=ddSetLogLevel:) OSSDDLogLevel ossLogLevel;
+
+@end
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark -
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+#ifndef NS_DESIGNATED_INITIALIZER
+    #define NS_DESIGNATED_INITIALIZER
+#endif
+
+/**
+ *  Log message options, allow copying certain log elements
+ */
+typedef NS_OPTIONS(NSInteger, OSSDDLogMessageOptions){
+    /**
+     *  Use this to use a copy of the file path
+     */
+    OSSDDLogMessageCopyFile        = 1 << 0,
+    /**
+     *  Use this to use a copy of the function name
+     */
+    OSSDDLogMessageCopyFunction    = 1 << 1,
+    /**
+     *  Use this to use avoid a copy of the message
+     */
+    OSSDDLogMessageDontCopyMessage = 1 << 2
+};
+
+/**
+ * The `DDLogMessage` class encapsulates information about the log message.
+ * If you write custom loggers or formatters, you will be dealing with objects of this class.
+ **/
+@interface OSSDDLogMessage : NSObject <NSCopying>
+{
+    // Direct accessors to be used only for performance
+    @public
+    NSString *_message;
+    OSSDDLogLevel _level;
+    OSSDDLogFlag _flag;
+    NSInteger _context;
+    NSString *_file;
+    NSString *_fileName;
+    NSString *_function;
+    NSUInteger _line;
+    id _tag;
+    OSSDDLogMessageOptions _options;
+    NSDate *_timestamp;
+    NSString *_threadID;
+    NSString *_threadName;
+    NSString *_queueLabel;
+}
+
+/**
+ *  Default `init` for empty messages.
+ */
+- (instancetype)init NS_DESIGNATED_INITIALIZER;
+
+/**
+ * Standard init method for a log message object.
+ * Used by the logging primitives. (And the macros use the logging primitives.)
+ *
+ * If you find need to manually create logMessage objects, there is one thing you should be aware of:
+ *
+ * If no flags are passed, the method expects the file and function parameters to be string literals.
+ * That is, it expects the given strings to exist for the duration of the object's lifetime,
+ * and it expects the given strings to be immutable.
+ * In other words, it does not copy these strings, it simply points to them.
+ * This is due to the fact that __FILE__ and __FUNCTION__ are usually used to specify these parameters,
+ * so it makes sense to optimize and skip the unnecessary allocations.
+ * However, if you need them to be copied you may use the options parameter to specify this.
+ *
+ *  @param message   the message
+ *  @param level     the log level
+ *  @param flag      the log flag
+ *  @param context   the context (if any is defined)
+ *  @param file      the current file
+ *  @param function  the current function
+ *  @param line      the current code line
+ *  @param tag       potential tag
+ *  @param options   a bitmask which supports DDLogMessageCopyFile and DDLogMessageCopyFunction.
+ *  @param timestamp the log timestamp
+ *
+ *  @return a new instance of a log message model object
+ */
+- (instancetype)initWithMessage:(NSString *)message
+                          level:(OSSDDLogLevel)level
+                           flag:(OSSDDLogFlag)flag
+                        context:(NSInteger)context
+                           file:(NSString *)file
+                       function:(NSString * __nullable)function
+                           line:(NSUInteger)line
+                            tag:(id __nullable)tag
+                        options:(OSSDDLogMessageOptions)options
+                      timestamp:(NSDate * __nullable)timestamp NS_DESIGNATED_INITIALIZER;
+
+/**
+ * Read-only properties
+ **/
+
+/**
+ *  The log message
+ */
+@property (readonly, nonatomic) NSString *message;
+@property (readonly, nonatomic) OSSDDLogLevel level;
+@property (readonly, nonatomic) OSSDDLogFlag flag;
+@property (readonly, nonatomic) NSInteger context;
+@property (readonly, nonatomic) NSString *file;
+@property (readonly, nonatomic) NSString *fileName;
+@property (readonly, nonatomic) NSString * __nullable function;
+@property (readonly, nonatomic) NSUInteger line;
+@property (readonly, nonatomic) id __nullable tag;
+@property (readonly, nonatomic) OSSDDLogMessageOptions options;
+@property (readonly, nonatomic) NSDate *timestamp;
+@property (readonly, nonatomic) NSString *threadID; // ID as it appears in NSLog calculated from the machThreadID
+@property (readonly, nonatomic) NSString *threadName;
+@property (readonly, nonatomic) NSString *queueLabel;
+
+@end
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark -
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+/**
+ * The `DDLogger` protocol specifies that an optional formatter can be added to a logger.
+ * Most (but not all) loggers will want to support formatters.
+ *
+ * However, writting getters and setters in a thread safe manner,
+ * while still maintaining maximum speed for the logging process, is a difficult task.
+ *
+ * To do it right, the implementation of the getter/setter has strict requiremenets:
+ * - Must NOT require the `logMessage:` method to acquire a lock.
+ * - Must NOT require the `logMessage:` method to access an atomic property (also a lock of sorts).
+ *
+ * To simplify things, an abstract logger is provided that implements the getter and setter.
+ *
+ * Logger implementations may simply extend this class,
+ * and they can ACCESS THE FORMATTER VARIABLE DIRECTLY from within their `logMessage:` method!
+ **/
+@interface OSSDDAbstractLogger : NSObject <OSSDDLogger>
+{
+    // Direct accessors to be used only for performance
+    @public
+    id <OSSDDLogFormatter> _logFormatter;
+    dispatch_queue_t _loggerQueue;
+}
+
+@property (nonatomic, strong, nullable) id <OSSDDLogFormatter> logFormatter;
+@property (nonatomic, DISPATCH_QUEUE_REFERENCE_TYPE) dispatch_queue_t loggerQueue;
+
+// For thread-safety assertions
+
+/**
+ *  Return YES if the current logger uses a global queue for logging
+ */
+@property (nonatomic, readonly, getter=isOnGlobalLoggingQueue)  BOOL onGlobalLoggingQueue;
+
+/**
+ *  Return YES if the current logger uses the internal designated queue for logging
+ */
+@property (nonatomic, readonly, getter=isOnInternalLoggerQueue) BOOL onInternalLoggerQueue;
+
+@end
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark -
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+@interface OSSDDLoggerInformation : NSObject
+
+@property (nonatomic, readonly) id <OSSDDLogger> logger;
+@property (nonatomic, readonly) OSSDDLogLevel level;
+
++ (OSSDDLoggerInformation *)informationWithLogger:(id <OSSDDLogger>)logger
+                           andLevel:(OSSDDLogLevel)level;
+
+@end
+
+NS_ASSUME_NONNULL_END

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSFileLog/OSSFileLogger.h

@@ -0,0 +1,509 @@
+// Software License Agreement (BSD License)
+//
+// Copyright (c) 2010-2016, Deusty, LLC
+// All rights reserved.
+//
+// Redistribution and use of this software in source and binary forms,
+// with or without modification, are permitted provided that the following conditions are met:
+//
+// * Redistributions of source code must retain the above copyright notice,
+//   this list of conditions and the following disclaimer.
+//
+// * Neither the name of Deusty nor the names of its contributors may be used
+//   to endorse or promote products derived from this software without specific
+//   prior written permission of Deusty, LLC.
+
+// Disable legacy macros
+#ifndef DD_LEGACY_MACROS
+    #define DD_LEGACY_MACROS 0
+#endif
+
+#import "OSSDDLog.h"
+
+@class OSSDDLogFileInfo;
+
+/**
+ * This class provides a logger to write log statements to a file.
+ **/
+
+
+// Default configuration and safety/sanity values.
+//
+// maximumFileSize         -> kDDDefaultLogMaxFileSize
+// rollingFrequency        -> kDDDefaultLogRollingFrequency
+// maximumNumberOfLogFiles -> kDDDefaultLogMaxNumLogFiles
+// logFilesDiskQuota       -> kDDDefaultLogFilesDiskQuota
+//
+// You should carefully consider the proper configuration values for your application.
+
+extern unsigned long long const osskDDDefaultLogMaxFileSize;
+extern NSTimeInterval     const osskDDDefaultLogRollingFrequency;
+extern NSUInteger         const osskDDDefaultLogMaxNumLogFiles;
+extern unsigned long long const osskDDDefaultLogFilesDiskQuota;
+
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark -
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+/**
+ *  The LogFileManager protocol is designed to allow you to control all aspects of your log files.
+ *
+ *  The primary purpose of this is to allow you to do something with the log files after they have been rolled.
+ *  Perhaps you want to compress them to save disk space.
+ *  Perhaps you want to upload them to an FTP server.
+ *  Perhaps you want to run some analytics on the file.
+ *
+ *  A default LogFileManager is, of course, provided.
+ *  The default LogFileManager simply deletes old log files according to the maximumNumberOfLogFiles property.
+ *
+ *  This protocol provides various methods to fetch the list of log files.
+ *
+ *  There are two variants: sorted and unsorted.
+ *  If sorting is not necessary, the unsorted variant is obviously faster.
+ *  The sorted variant will return an array sorted by when the log files were created,
+ *  with the most recently created log file at index 0, and the oldest log file at the end of the array.
+ *
+ *  You can fetch only the log file paths (full path including name), log file names (name only),
+ *  or an array of `DDLogFileInfo` objects.
+ *  The `DDLogFileInfo` class is documented below, and provides a handy wrapper that
+ *  gives you easy access to various file attributes such as the creation date or the file size.
+ */
+@protocol OSSDDLogFileManager <NSObject>
+@required
+
+// Public properties
+
+/**
+ * The maximum number of archived log files to keep on disk.
+ * For example, if this property is set to 3,
+ * then the LogFileManager will only keep 3 archived log files (plus the current active log file) on disk.
+ * Once the active log file is rolled/archived, then the oldest of the existing 3 rolled/archived log files is deleted.
+ *
+ * You may optionally disable this option by setting it to zero.
+ **/
+@property (readwrite, assign, atomic) NSUInteger maximumNumberOfLogFiles;
+
+/**
+ * The maximum space that logs can take. On rolling logfile all old logfiles that exceed logFilesDiskQuota will
+ * be deleted.
+ *
+ * You may optionally disable this option by setting it to zero.
+ **/
+@property (readwrite, assign, atomic) unsigned long long logFilesDiskQuota;
+
+// Public methods
+
+/**
+ *  Returns the logs directory (path)
+ */
+@property (nonatomic, readonly, copy) NSString *logsDirectory;
+
+/**
+ * Returns an array of `NSString` objects,
+ * each of which is the filePath to an existing log file on disk.
+ **/
+@property (nonatomic, readonly, strong) NSArray<NSString *> *unsortedLogFilePaths;
+
+/**
+ * Returns an array of `NSString` objects,
+ * each of which is the fileName of an existing log file on disk.
+ **/
+@property (nonatomic, readonly, strong) NSArray<NSString *> *unsortedLogFileNames;
+
+/**
+ * Returns an array of `DDLogFileInfo` objects,
+ * each representing an existing log file on disk,
+ * and containing important information about the log file such as it's modification date and size.
+ **/
+@property (nonatomic, readonly, strong) NSArray<OSSDDLogFileInfo *> *unsortedLogFileInfos;
+
+/**
+ * Just like the `unsortedLogFilePaths` method, but sorts the array.
+ * The items in the array are sorted by creation date.
+ * The first item in the array will be the most recently created log file.
+ **/
+@property (nonatomic, readonly, strong) NSArray<NSString *> *sortedLogFilePaths;
+
+/**
+ * Just like the `unsortedLogFileNames` method, but sorts the array.
+ * The items in the array are sorted by creation date.
+ * The first item in the array will be the most recently created log file.
+ **/
+@property (nonatomic, readonly, strong) NSArray<NSString *> *sortedLogFileNames;
+
+/**
+ * Just like the `unsortedLogFileInfos` method, but sorts the array.
+ * The items in the array are sorted by creation date.
+ * The first item in the array will be the most recently created log file.
+ **/
+@property (nonatomic, readonly, strong) NSArray<OSSDDLogFileInfo *> *sortedLogFileInfos;
+
+// Private methods (only to be used by DDFileLogger)
+
+/**
+ * Generates a new unique log file path, and creates the corresponding log file.
+ **/
+- (NSString *)createNewLogFile;
+
+@optional
+
+// Notifications from DDFileLogger
+
+/**
+ *  Called when a log file was archieved
+ */
+- (void)didArchiveLogFile:(NSString *)logFilePath NS_SWIFT_NAME(didArchiveLogFile(atPath:));
+
+/**
+ *  Called when the roll action was executed and the log was archieved
+ */
+- (void)didRollAndArchiveLogFile:(NSString *)logFilePath NS_SWIFT_NAME(didRollAndArchiveLogFile(atPath:));
+
+@end
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark -
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+/**
+ * Default log file manager.
+ *
+ * All log files are placed inside the logsDirectory.
+ * If a specific logsDirectory isn't specified, the default directory is used.
+ * On Mac, this is in `~/Library/Logs/<Application Name>`.
+ * On iPhone, this is in `~/Library/Caches/Logs`.
+ *
+ * Log files are named `"<bundle identifier> <date> <time>.log"`
+ * Example: `com.organization.myapp 2013-12-03 17-14.log`
+ *
+ * Archived log files are automatically deleted according to the `maximumNumberOfLogFiles` property.
+ **/
+@interface OSSDDLogFileManagerDefault : NSObject <OSSDDLogFileManager>
+
+/**
+ *  Default initializer
+ */
+- (instancetype)init;
+
+/**
+ *  Designated initialized, requires the logs directory
+ */
+- (instancetype)initWithLogsDirectory:(NSString *)logsDirectory NS_DESIGNATED_INITIALIZER;
+
+#if TARGET_OS_IPHONE
+/*
+ * Calling this constructor you can override the default "automagically" chosen NSFileProtection level.
+ * Useful if you are writing a command line utility / CydiaSubstrate addon for iOS that has no NSBundle
+ * or like SpringBoard no BackgroundModes key in the NSBundle:
+ *    iPhone:~ root# cycript -p SpringBoard
+ *    cy# [NSBundle mainBundle]
+ *    #"NSBundle </System/Library/CoreServices/SpringBoard.app> (loaded)"
+ *    cy# [[NSBundle mainBundle] objectForInfoDictionaryKey:@"UIBackgroundModes"];
+ *    null
+ *    cy#
+ **/
+- (instancetype)initWithLogsDirectory:(NSString *)logsDirectory defaultFileProtectionLevel:(NSFileProtectionType)fileProtectionLevel;
+#endif
+
+/*
+ * Methods to override.
+ *
+ * Log files are named `"<bundle identifier> <date> <time>.log"`
+ * Example: `com.organization.myapp 2013-12-03 17-14.log`
+ *
+ * If you wish to change default filename, you can override following two methods.
+ * - `newLogFileName` method would be called on new logfile creation.
+ * - `isLogFile:` method would be called to filter logfiles from all other files in logsDirectory.
+ *   You have to parse given filename and return YES if it is logFile.
+ *
+ * **NOTE**
+ * `newLogFileName` returns filename. If appropriate file already exists, number would be added
+ * to filename before extension. You have to handle this case in isLogFile: method.
+ *
+ * Example:
+ * - newLogFileName returns `"com.organization.myapp 2013-12-03.log"`,
+ *   file `"com.organization.myapp 2013-12-03.log"` would be created.
+ * - after some time `"com.organization.myapp 2013-12-03.log"` is archived
+ * - newLogFileName again returns `"com.organization.myapp 2013-12-03.log"`,
+ *   file `"com.organization.myapp 2013-12-03 2.log"` would be created.
+ * - after some time `"com.organization.myapp 2013-12-03 1.log"` is archived
+ * - newLogFileName again returns `"com.organization.myapp 2013-12-03.log"`,
+ *   file `"com.organization.myapp 2013-12-03 3.log"` would be created.
+ **/
+
+/**
+ * Generates log file name with default format `"<bundle identifier> <date> <time>.log"`
+ * Example: `MobileSafari 2013-12-03 17-14.log`
+ *
+ * You can change it by overriding `newLogFileName` and `isLogFile:` methods.
+ **/
+@property (readonly, copy) NSString *newLogFileName;
+
+/**
+ * Default log file name is `"<bundle identifier> <date> <time>.log"`.
+ * Example: `MobileSafari 2013-12-03 17-14.log`
+ *
+ * You can change it by overriding `newLogFileName` and `isLogFile:` methods.
+ **/
+- (BOOL)isLogFile:(NSString *)fileName NS_SWIFT_NAME(isLogFile(withName:));
+
+/* Inherited from DDLogFileManager protocol:
+
+   @property (readwrite, assign, atomic) NSUInteger maximumNumberOfLogFiles;
+   @property (readwrite, assign, atomic) NSUInteger logFilesDiskQuota;
+
+   - (NSString *)logsDirectory;
+
+   - (NSArray *)unsortedLogFilePaths;
+   - (NSArray *)unsortedLogFileNames;
+   - (NSArray *)unsortedLogFileInfos;
+
+   - (NSArray *)sortedLogFilePaths;
+   - (NSArray *)sortedLogFileNames;
+   - (NSArray *)sortedLogFileInfos;
+
+ */
+
+@end
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark -
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+/**
+ * Most users will want file log messages to be prepended with the date and time.
+ * Rather than forcing the majority of users to write their own formatter,
+ * we will supply a logical default formatter.
+ * Users can easily replace this formatter with their own by invoking the `setLogFormatter:` method.
+ * It can also be removed by calling `setLogFormatter:`, and passing a nil parameter.
+ *
+ * In addition to the convenience of having a logical default formatter,
+ * it will also provide a template that makes it easy for developers to copy and change.
+ **/
+@interface OSSDDLogFileFormatterDefault : NSObject <OSSDDLogFormatter>
+
+/**
+ *  Default initializer
+ */
+- (instancetype)init;
+
+/**
+ *  Designated initializer, requires a date formatter
+ */
+- (instancetype)initWithDateFormatter:(NSDateFormatter *)dateFormatter NS_DESIGNATED_INITIALIZER;
+
+@end
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark -
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+/**
+ *  The standard implementation for a file logger
+ */
+@interface OSSDDFileLogger : OSSDDAbstractLogger <OSSDDLogger> {
+	OSSDDLogFileInfo *_currentLogFileInfo;
+}
+
+/**
+ *  Default initializer
+ */
+- (instancetype)init;
+
+/**
+ *  Designated initializer, requires a `DDLogFileManager` instance
+ */
+- (instancetype)initWithLogFileManager:(id <OSSDDLogFileManager>)logFileManager NS_DESIGNATED_INITIALIZER;
+
+/**
+ *  Called when the logger is about to write message. Call super before your implementation.
+ */
+- (void)willLogMessage NS_REQUIRES_SUPER;
+
+/**
+ *  Called when the logger wrote message. Call super after your implementation.
+ */
+- (void)didLogMessage NS_REQUIRES_SUPER;
+
+/**
+ *  Called when the logger checks archive or not current log file. 
+ *  Override this method to exdend standart behavior. By default returns NO.
+ */
+- (BOOL)shouldArchiveRecentLogFileInfo:(OSSDDLogFileInfo *)recentLogFileInfo;
+
+/**
+ * Log File Rolling:
+ *
+ * `maximumFileSize`:
+ *   The approximate maximum size (in bytes) to allow log files to grow.
+ *   If a log file is larger than this value after a log statement is appended,
+ *   then the log file is rolled.
+ *
+ * `rollingFrequency`
+ *   How often to roll the log file.
+ *   The frequency is given as an `NSTimeInterval`, which is a double that specifies the interval in seconds.
+ *   Once the log file gets to be this old, it is rolled.
+ *
+ * `doNotReuseLogFiles`
+ *   When set, will always create a new log file at application launch.
+ *
+ * Both the `maximumFileSize` and the `rollingFrequency` are used to manage rolling.
+ * Whichever occurs first will cause the log file to be rolled.
+ *
+ * For example:
+ * The `rollingFrequency` is 24 hours,
+ * but the log file surpasses the `maximumFileSize` after only 20 hours.
+ * The log file will be rolled at that 20 hour mark.
+ * A new log file will be created, and the 24 hour timer will be restarted.
+ *
+ * You may optionally disable rolling due to filesize by setting `maximumFileSize` to zero.
+ * If you do so, rolling is based solely on `rollingFrequency`.
+ *
+ * You may optionally disable rolling due to time by setting `rollingFrequency` to zero (or any non-positive number).
+ * If you do so, rolling is based solely on `maximumFileSize`.
+ *
+ * If you disable both `maximumFileSize` and `rollingFrequency`, then the log file won't ever be rolled.
+ * This is strongly discouraged.
+ **/
+@property (readwrite, assign) unsigned long long maximumFileSize;
+
+/**
+ *  See description for `maximumFileSize`
+ */
+@property (readwrite, assign) NSTimeInterval rollingFrequency;
+
+/**
+ *  See description for `maximumFileSize`
+ */
+@property (readwrite, assign, atomic) BOOL doNotReuseLogFiles;
+
+/**
+ * The DDLogFileManager instance can be used to retrieve the list of log files,
+ * and configure the maximum number of archived log files to keep.
+ *
+ * @see DDLogFileManager.maximumNumberOfLogFiles
+ **/
+@property (strong, nonatomic, readonly) id <OSSDDLogFileManager> logFileManager;
+
+/**
+ * When using a custom formatter you can set the `logMessage` method not to append
+ * `\n` character after each output. This allows for some greater flexibility with
+ * custom formatters. Default value is YES.
+ **/
+@property (nonatomic, readwrite, assign) BOOL automaticallyAppendNewlineForCustomFormatters;
+
+/**
+ *  You can optionally force the current log file to be rolled with this method.
+ *  CompletionBlock will be called on main queue.
+ */
+- (void)rollLogFileWithCompletionBlock:(void (^)(void))completionBlock NS_SWIFT_NAME(rollLogFile(withCompletion:));
+
+/**
+ *  Method is deprecated.
+ *  @deprecated Use `rollLogFileWithCompletionBlock:` method instead.
+ */
+- (void)rollLogFile __attribute((deprecated));
+
+// Inherited from DDAbstractLogger
+
+// - (id <DDLogFormatter>)logFormatter;
+// - (void)setLogFormatter:(id <DDLogFormatter>)formatter;
+
+/**
+ * Returns the log file that should be used.
+ * If there is an existing log file that is suitable,
+ * within the constraints of `maximumFileSize` and `rollingFrequency`, then it is returned.
+ *
+ * Otherwise a new file is created and returned.
+ **/
+@property (nonatomic, readonly, strong) OSSDDLogFileInfo *currentLogFileInfo;
+
+@end
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark -
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+/**
+ * `DDLogFileInfo` is a simple class that provides access to various file attributes.
+ * It provides good performance as it only fetches the information if requested,
+ * and it caches the information to prevent duplicate fetches.
+ *
+ * It was designed to provide quick snapshots of the current state of log files,
+ * and to help sort log files in an array.
+ *
+ * This class does not monitor the files, or update it's cached attribute values if the file changes on disk.
+ * This is not what the class was designed for.
+ *
+ * If you absolutely must get updated values,
+ * you can invoke the reset method which will clear the cache.
+ **/
+@interface OSSDDLogFileInfo : NSObject
+
+@property (strong, nonatomic, readonly) NSString *filePath;
+@property (strong, nonatomic, readonly) NSString *fileName;
+
+#if FOUNDATION_SWIFT_SDK_EPOCH_AT_LEAST(8)
+@property (strong, nonatomic, readonly) NSDictionary<NSFileAttributeKey, id> *fileAttributes;
+#else
+@property (strong, nonatomic, readonly) NSDictionary<NSString *, id> *fileAttributes;
+#endif
+
+@property (strong, nonatomic, readonly) NSDate *creationDate;
+@property (strong, nonatomic, readonly) NSDate *modificationDate;
+
+@property (nonatomic, readonly) unsigned long long fileSize;
+
+@property (nonatomic, readonly) NSTimeInterval age;
+
+@property (nonatomic, readwrite) BOOL isArchived;
+
++ (instancetype)logFileWithPath:(NSString *)filePath NS_SWIFT_UNAVAILABLE("Use init(filePath:)");
+
+- (instancetype)init NS_UNAVAILABLE;
+- (instancetype)initWithFilePath:(NSString *)filePath NS_DESIGNATED_INITIALIZER;
+
+- (void)reset;
+- (void)renameFile:(NSString *)newFileName NS_SWIFT_NAME(renameFile(to:));
+
+#if TARGET_IPHONE_SIMULATOR
+
+// So here's the situation.
+// Extended attributes are perfect for what we're trying to do here (marking files as archived).
+// This is exactly what extended attributes were designed for.
+//
+// But Apple screws us over on the simulator.
+// Everytime you build-and-go, they copy the application into a new folder on the hard drive,
+// and as part of the process they strip extended attributes from our log files.
+// Normally, a copy of a file preserves extended attributes.
+// So obviously Apple has gone to great lengths to piss us off.
+//
+// Thus we use a slightly different tactic for marking log files as archived in the simulator.
+// That way it "just works" and there's no confusion when testing.
+//
+// The difference in method names is indicative of the difference in functionality.
+// On the simulator we add an attribute by appending a filename extension.
+//
+// For example:
+// "mylog.txt" -> "mylog.archived.txt"
+// "mylog"     -> "mylog.archived"
+
+- (BOOL)hasExtensionAttributeWithName:(NSString *)attrName;
+
+- (void)addExtensionAttributeWithName:(NSString *)attrName;
+- (void)removeExtensionAttributeWithName:(NSString *)attrName;
+
+#else /* if TARGET_IPHONE_SIMULATOR */
+
+// Normal use of extended attributes used everywhere else,
+// such as on Macs and on iPhone devices.
+
+- (BOOL)hasExtendedAttributeWithName:(NSString *)attrName;
+
+- (void)addExtendedAttributeWithName:(NSString *)attrName;
+- (void)removeExtendedAttributeWithName:(NSString *)attrName;
+
+#endif /* if TARGET_IPHONE_SIMULATOR */
+
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSFileLog/OSSLogMacros.h

@@ -0,0 +1,82 @@
+// Software License Agreement (BSD License)
+//
+// Copyright (c) 2010-2016, Deusty, LLC
+// All rights reserved.
+//
+// Redistribution and use of this software in source and binary forms,
+// with or without modification, are permitted provided that the following conditions are met:
+//
+// * Redistributions of source code must retain the above copyright notice,
+//   this list of conditions and the following disclaimer.
+//
+// * Neither the name of Deusty nor the names of its contributors may be used
+//   to endorse or promote products derived from this software without specific
+//   prior written permission of Deusty, LLC.
+
+// Disable legacy macros
+#ifndef OSSDD_LEGACY_MACROS
+    #define OSSDD_LEGACY_MACROS 0
+#endif
+
+#import "OSSDDLog.h"
+
+/**
+ * The constant/variable/method responsible for controlling the current log level.
+ **/
+#ifndef OSSLOG_LEVEL_DEF
+    #define OSSLOG_LEVEL_DEF ossLogLevel
+#endif
+
+/**
+ * Whether async should be used by log messages, excluding error messages that are always sent sync.
+ **/
+#ifndef OSSLOG_ASYNC_ENABLED
+    #define OSSLOG_ASYNC_ENABLED YES
+#endif
+
+/**
+ * These are the two macros that all other macros below compile into.
+ * These big multiline macros makes all the other macros easier to read.
+ **/
+#define OSSLOG_MACRO(isAsynchronous, lvl, flg, ctx, atag, fnct, frmt, ...) \
+        [OSSDDLog log : isAsynchronous                                     \
+             level : lvl                                                \
+              flag : flg                                                \
+           context : ctx                                                \
+              file : __FILE__                                           \
+          function : fnct                                               \
+              line : __LINE__                                           \
+               tag : atag                                               \
+            format : (frmt), ## __VA_ARGS__]
+
+/**
+ * Define version of the macro that only execute if the log level is above the threshold.
+ * The compiled versions essentially look like this:
+ *
+ * if (logFlagForThisLogMsg & ddLogLevel) { execute log message }
+ *
+ * When LOG_LEVEL_DEF is defined as ddLogLevel.
+ *
+ * As shown further below, Lumberjack actually uses a bitmask as opposed to primitive log levels.
+ * This allows for a great amount of flexibility and some pretty advanced fine grained logging techniques.
+ *
+ * Note that when compiler optimizations are enabled (as they are for your release builds),
+ * the log messages above your logging threshold will automatically be compiled out.
+ *
+ * (If the compiler sees LOG_LEVEL_DEF/ddLogLevel declared as a constant, the compiler simply checks to see
+ *  if the 'if' statement would execute, and if not it strips it from the binary.)
+ *
+ * We also define shorthand versions for asynchronous and synchronous logging.
+ **/
+#define OSSLOG_MAYBE(async, lvl, flg, ctx, tag, fnct, frmt, ...) \
+        do { if(lvl & flg) OSSLOG_MACRO(async, lvl, flg, ctx, tag, fnct, frmt, ##__VA_ARGS__); } while(0)
+
+/**
+ * Ready to use log macros with no context or tag.
+ **/
+#define OSSDDLogError(frmt, ...)   OSSLOG_MAYBE(NO,                OSSLOG_LEVEL_DEF, OSSDDLogFlagError,   0, nil, __PRETTY_FUNCTION__, frmt, ##__VA_ARGS__)
+#define OSSDDLogWarn(frmt, ...)    OSSLOG_MAYBE(OSSLOG_ASYNC_ENABLED, OSSLOG_LEVEL_DEF, OSSDDLogFlagWarning, 0, nil, __PRETTY_FUNCTION__, frmt, ##__VA_ARGS__)
+#define OSSDDLogInfo(frmt, ...)    OSSLOG_MAYBE(OSSLOG_ASYNC_ENABLED, OSSLOG_LEVEL_DEF, OSSDDLogFlagInfo,    0, nil, __PRETTY_FUNCTION__, frmt, ##__VA_ARGS__)
+#define OSSDDLogDebug(frmt, ...)   OSSLOG_MAYBE(OSSLOG_ASYNC_ENABLED, OSSLOG_LEVEL_DEF, OSSDDLogFlagDebug,   0, nil, __PRETTY_FUNCTION__, frmt, ##__VA_ARGS__)
+#define OSSDDLogVerbose(frmt, ...) OSSLOG_MAYBE(OSSLOG_ASYNC_ENABLED, OSSLOG_LEVEL_DEF, OSSDDLogFlagVerbose, 0, nil, __PRETTY_FUNCTION__, frmt, ##__VA_ARGS__)
+

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSFileLog/OSSNSLogger.h

@@ -0,0 +1,14 @@
+//
+//  OSSNSLogger.h
+//  AliyunOSSiOS
+//
+//  Created by jingdan on 2017/10/24.
+//  Copyright © 2017年 zhouzhuo. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+#import "OSSDDLog.h"
+
+@interface OSSNSLogger : OSSDDAbstractLogger <OSSDDLogger>
+@property (class, readonly, strong) OSSNSLogger *sharedInstance;
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSFileLog/OSSNSLogger.m

@@ -0,0 +1,32 @@
+//
+//  OSSNSLogger.m
+//  AliyunOSSiOS
+//
+//  Created by jingdan on 2017/10/24.
+//  Copyright © 2017年 zhouzhuo. All rights reserved.
+//
+
+#import "OSSNSLogger.h"
+
+static OSSNSLogger *sharedInstance;
+
+@implementation OSSNSLogger
++ (instancetype)sharedInstance {
+    static dispatch_once_t OSSNSLoggerOnceToken;
+    
+    dispatch_once(&OSSNSLoggerOnceToken, ^{
+        sharedInstance = [[[self class] alloc] init];
+    });
+    
+    return sharedInstance;
+}
+
+- (void)logMessage:(OSSDDLogMessage *)logMessage {
+    NSString * message = _logFormatter ? [_logFormatter formatLogMessage:logMessage] : logMessage->_message;
+    
+    if (message) {
+        NSLog(@"%@",message);
+    }
+}
+
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSFileLog/OSSReachability.h

@@ -0,0 +1,64 @@
+/*
+ Copyright (C) 2016 Apple Inc. All Rights Reserved.
+ See LICENSE.txt for this sample’s licensing information
+ 
+ Abstract:
+ Basic demonstration of how to use the SystemConfiguration Reachablity APIs.
+ */
+
+#import <Foundation/Foundation.h>
+#import <SystemConfiguration/SystemConfiguration.h>
+#import <netinet/in.h>
+
+
+typedef enum : NSInteger {
+	OSSNotReachable = 0,
+	OSSReachableViaWiFi,
+	OSSReachableViaWWAN
+} OSSNetworkStatus;
+
+#pragma mark IPv6 Support
+//Reachability fully support IPv6.  For full details, see ReadMe.md.
+
+
+extern NSString *ossReachabilityChangedNotification;
+
+
+@interface OSSReachability : NSObject
+
+/*!
+ * Use to check the reachability of a given host name.
+ */
++ (instancetype)reachabilityWithHostName:(NSString *)hostName;
+
+/*!
+ * Use to check the reachability of a given IP address.
+ */
++ (instancetype)reachabilityWithAddress:(const struct sockaddr *)hostAddress;
+
+/*!
+ * Checks whether the default route is available. Should be used by applications that do not connect to a particular host.
+ */
++ (instancetype)reachabilityForInternetConnection;
+
+
+#pragma mark reachabilityForLocalWiFi
+//reachabilityForLocalWiFi has been removed from the sample.  See ReadMe.md for more information.
+//+ (instancetype)reachabilityForLocalWiFi;
+
+/*!
+ * Start listening for reachability notifications on the current run loop.
+ */
+- (BOOL)startNotifier;
+- (void)stopNotifier;
+
+- (OSSNetworkStatus)currentReachabilityStatus;
+
+/*!
+ * WWAN may be available, but not active until a connection has been established. WiFi may require a connection for VPN on Demand.
+ */
+- (BOOL)connectionRequired;
+
+@end
+
+

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSFileLog/OSSReachability.m

@@ -0,0 +1,248 @@
+/*
+ Copyright (C) 2016 Apple Inc. All Rights Reserved.
+ See LICENSE.txt for this sample’s licensing information
+ 
+ Abstract:
+ Basic demonstration of how to use the SystemConfiguration Reachablity APIs.
+ */
+
+#import <arpa/inet.h>
+#import <ifaddrs.h>
+#import <netdb.h>
+#import <sys/socket.h>
+#import <netinet/in.h>
+#import <CoreFoundation/CoreFoundation.h>
+
+#import "OSSReachability.h"
+
+#pragma mark IPv6 Support
+//Reachability fully support IPv6.  For full details, see ReadMe.md.
+
+
+NSString *ossReachabilityChangedNotification = @"ossNetworkReachabilityChangedNotification";
+
+#ifndef kShouldPrintReachabilityFlags
+#if TARGET_OS_IOS
+#define kShouldPrintReachabilityFlags 1
+#else
+#define kShouldPrintReachabilityFlags 0
+#endif
+#endif
+
+#pragma mark - Supporting functions
+static void PrintReachabilityFlags(SCNetworkReachabilityFlags flags, const char* comment)
+{
+#if kShouldPrintReachabilityFlags
+
+    NSLog(@"Reachability Flag Status: %c%c %c%c%c%c%c%c%c %s\n",
+          (flags & kSCNetworkReachabilityFlagsIsWWAN)				? 'W' : '-',
+          (flags & kSCNetworkReachabilityFlagsReachable)            ? 'R' : '-',
+
+          (flags & kSCNetworkReachabilityFlagsTransientConnection)  ? 't' : '-',
+          (flags & kSCNetworkReachabilityFlagsConnectionRequired)   ? 'c' : '-',
+          (flags & kSCNetworkReachabilityFlagsConnectionOnTraffic)  ? 'C' : '-',
+          (flags & kSCNetworkReachabilityFlagsInterventionRequired) ? 'i' : '-',
+          (flags & kSCNetworkReachabilityFlagsConnectionOnDemand)   ? 'D' : '-',
+          (flags & kSCNetworkReachabilityFlagsIsLocalAddress)       ? 'l' : '-',
+          (flags & kSCNetworkReachabilityFlagsIsDirect)             ? 'd' : '-',
+          comment
+          );
+#endif
+}
+
+
+static void ReachabilityCallback(SCNetworkReachabilityRef target, SCNetworkReachabilityFlags flags, void* info)
+{
+#pragma unused (target, flags)
+	NSCAssert(info != NULL, @"info was NULL in ReachabilityCallback");
+	NSCAssert([(__bridge NSObject*) info isKindOfClass: [OSSReachability class]], @"info was wrong class in ReachabilityCallback");
+
+    OSSReachability* noteObject = (__bridge OSSReachability *)info;
+    // Post a notification to notify the client that the network reachability changed.
+    [[NSNotificationCenter defaultCenter] postNotificationName: ossReachabilityChangedNotification object: noteObject];
+}
+
+
+#pragma mark - Reachability implementation
+
+@implementation OSSReachability
+{
+	SCNetworkReachabilityRef _reachabilityRef;
+}
+
++ (instancetype)reachabilityWithHostName:(NSString *)hostName
+{
+	OSSReachability* returnValue = NULL;
+	SCNetworkReachabilityRef reachability = SCNetworkReachabilityCreateWithName(NULL, [hostName UTF8String]);
+	if (reachability != NULL)
+	{
+		returnValue= [[self alloc] init];
+		if (returnValue != NULL)
+		{
+			returnValue->_reachabilityRef = reachability;
+		}
+        else {
+            CFRelease(reachability);
+        }
+	}
+	return returnValue;
+}
+
+
++ (instancetype)reachabilityWithAddress:(const struct sockaddr *)hostAddress
+{
+	SCNetworkReachabilityRef reachability = SCNetworkReachabilityCreateWithAddress(kCFAllocatorDefault, hostAddress);
+
+	OSSReachability* returnValue = NULL;
+
+	if (reachability != NULL)
+	{
+		returnValue = [[self alloc] init];
+		if (returnValue != NULL)
+		{
+			returnValue->_reachabilityRef = reachability;
+		}
+        else {
+            CFRelease(reachability);
+        }
+	}
+	return returnValue;
+}
+
+
++ (instancetype)reachabilityForInternetConnection
+{
+	struct sockaddr_in zeroAddress;
+	bzero(&zeroAddress, sizeof(zeroAddress));
+	zeroAddress.sin_len = sizeof(zeroAddress);
+	zeroAddress.sin_family = AF_INET;
+    
+    return [self reachabilityWithAddress: (const struct sockaddr *) &zeroAddress];
+}
+
+#pragma mark reachabilityForLocalWiFi
+//reachabilityForLocalWiFi has been removed from the sample.  See ReadMe.md for more information.
+//+ (instancetype)reachabilityForLocalWiFi
+
+
+
+#pragma mark - Start and stop notifier
+
+- (BOOL)startNotifier
+{
+	BOOL returnValue = NO;
+	SCNetworkReachabilityContext context = {0, (__bridge void *)(self), NULL, NULL, NULL};
+
+	if (SCNetworkReachabilitySetCallback(_reachabilityRef, ReachabilityCallback, &context))
+	{
+		if (SCNetworkReachabilityScheduleWithRunLoop(_reachabilityRef, CFRunLoopGetCurrent(), kCFRunLoopDefaultMode))
+		{
+			returnValue = YES;
+		}
+	}
+    
+	return returnValue;
+}
+
+
+- (void)stopNotifier
+{
+	if (_reachabilityRef != NULL)
+	{
+		SCNetworkReachabilityUnscheduleFromRunLoop(_reachabilityRef, CFRunLoopGetCurrent(), kCFRunLoopDefaultMode);
+	}
+}
+
+
+- (void)dealloc
+{
+	[self stopNotifier];
+	if (_reachabilityRef != NULL)
+	{
+		CFRelease(_reachabilityRef);
+	}
+}
+
+
+#pragma mark - Network Flag Handling
+
+- (OSSNetworkStatus)networkStatusForFlags:(SCNetworkReachabilityFlags)flags
+{
+	PrintReachabilityFlags(flags, "networkStatusForFlags");
+	if ((flags & kSCNetworkReachabilityFlagsReachable) == 0)
+	{
+		// The target host is not reachable.
+		return OSSNotReachable;
+	}
+
+    OSSNetworkStatus returnValue = OSSNotReachable;
+
+	if ((flags & kSCNetworkReachabilityFlagsConnectionRequired) == 0)
+	{
+		/*
+         If the target host is reachable and no connection is required then we'll assume (for now) that you're on Wi-Fi...
+         */
+		returnValue = OSSReachableViaWiFi;
+	}
+
+	if ((((flags & kSCNetworkReachabilityFlagsConnectionOnDemand ) != 0) ||
+        (flags & kSCNetworkReachabilityFlagsConnectionOnTraffic) != 0))
+	{
+        /*
+         ... and the connection is on-demand (or on-traffic) if the calling application is using the CFSocketStream or higher APIs...
+         */
+
+        if ((flags & kSCNetworkReachabilityFlagsInterventionRequired) == 0)
+        {
+            /*
+             ... and no [user] intervention is needed...
+             */
+            returnValue = OSSReachableViaWiFi;
+        }
+    }
+
+#if TARGET_OS_IOS
+    if ((flags & kSCNetworkReachabilityFlagsIsWWAN) == kSCNetworkReachabilityFlagsIsWWAN)
+    {
+        /*
+         ... but WWAN connections are OK if the calling application is using the CFNetwork APIs.
+         */
+        returnValue = OSSReachableViaWWAN;
+    }
+#endif
+
+    
+	return returnValue;
+}
+
+
+- (BOOL)connectionRequired
+{
+	NSAssert(_reachabilityRef != NULL, @"connectionRequired called with NULL reachabilityRef");
+	SCNetworkReachabilityFlags flags;
+
+	if (SCNetworkReachabilityGetFlags(_reachabilityRef, &flags))
+	{
+		return (flags & kSCNetworkReachabilityFlagsConnectionRequired);
+	}
+
+    return NO;
+}
+
+
+- (OSSNetworkStatus)currentReachabilityStatus
+{
+	NSAssert(_reachabilityRef != NULL, @"currentOSSNetworkStatus called with NULL SCNetworkReachabilityRef");
+	OSSNetworkStatus returnValue = OSSNotReachable;
+	SCNetworkReachabilityFlags flags;
+    
+	if (SCNetworkReachabilityGetFlags(_reachabilityRef, &flags))
+	{
+        returnValue = [self networkStatusForFlags:flags];
+	}
+    
+	return returnValue;
+}
+
+
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSGetBucketInfoRequest.h

@@ -0,0 +1,15 @@
+//
+//  OSSGetBucketInfoRequest.h
+//  AliyunOSSSDK
+//
+//  Created by huaixu on 2018/7/10.
+//  Copyright © 2018年 aliyun. All rights reserved.
+//
+
+#import "OSSRequest.h"
+
+@interface OSSGetBucketInfoRequest : OSSRequest
+
+@property (nonatomic, copy) NSString *bucketName;
+
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSGetBucketInfoRequest.m

@@ -0,0 +1,17 @@
+//
+//  OSSGetBucketInfoRequest.m
+//  AliyunOSSSDK
+//
+//  Created by huaixu on 2018/7/10.
+//  Copyright © 2018年 aliyun. All rights reserved.
+//
+
+#import "OSSGetBucketInfoRequest.h"
+
+@implementation OSSGetBucketInfoRequest
+
+- (NSDictionary *)requestParams {
+    return @{@"bucketInfo": @""};
+}
+
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSGetBucketInfoResult.h

@@ -0,0 +1,57 @@
+//
+//  OSSGetBucketInfoResult.h
+//  AliyunOSSSDK
+//
+//  Created by huaixu on 2018/7/10.
+//  Copyright © 2018年 aliyun. All rights reserved.
+//
+
+#import "OSSResult.h"
+
+@interface OSSBucketOwner : NSObject
+
+@property (nonatomic, copy) NSString *userName;
+
+@property (nonatomic, copy) NSString *userId;
+
+@end
+
+@interface OSSAccessControlList : NSObject
+
+@property (nonatomic, copy) NSString *grant;
+
+@end
+
+
+
+@interface OSSGetBucketInfoResult : OSSResult
+
+/// Created date.
+@property (nonatomic, copy) NSString *creationDate;
+
+/// Bucket name.
+@property (nonatomic, copy) NSString *bucketName;
+
+/// Bucket location.
+@property (nonatomic, copy) NSString *location;
+
+/// Storage class (Standard, IA, Archive)
+@property (nonatomic, copy) NSString *storageClass;
+
+/**
+ Internal endpoint. It could be accessed within AliCloud under the same
+ location.
+ */
+@property (nonatomic, copy) NSString *intranetEndpoint;
+
+/**
+ External endpoint.It could be accessed from anywhere.
+ */
+@property (nonatomic, copy) NSString *extranetEndpoint;
+
+/// Bucket owner.
+@property (nonatomic, strong) OSSBucketOwner *owner;
+
+@property (nonatomic, strong) OSSAccessControlList *acl;
+
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSGetBucketInfoResult.m

@@ -0,0 +1,23 @@
+//
+//  OSSGetBucketInfoResult.m
+//  AliyunOSSSDK
+//
+//  Created by huaixu on 2018/7/10.
+//  Copyright © 2018年 aliyun. All rights reserved.
+//
+
+#import "OSSGetBucketInfoResult.h"
+
+@implementation OSSBucketOwner
+
+@end
+
+@implementation OSSAccessControlList
+
+@end
+
+
+
+@implementation OSSGetBucketInfoResult
+
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSGetObjectACLRequest.h

@@ -0,0 +1,26 @@
+//
+//  OSSGetObjectACLRequest.h
+//  AliyunOSSSDK
+//
+//  Created by huaixu on 2018/1/26.
+//  Copyright © 2018年 aliyun. All rights reserved.
+//
+
+#import "OSSRequest.h"
+
+NS_ASSUME_NONNULL_BEGIN
+@interface OSSGetObjectACLRequest : OSSRequest
+
+/**
+ the bucket's name which object stored
+ */
+@property (nonatomic, copy) NSString *bucketName;
+
+/**
+ the name of object
+ */
+@property (nonatomic, copy) NSString *objectName;
+
+
+@end
+NS_ASSUME_NONNULL_END

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSGetObjectACLRequest.m

@@ -0,0 +1,13 @@
+//
+//  OSSGetObjectACLRequest.m
+//  AliyunOSSSDK
+//
+//  Created by huaixu on 2018/1/26.
+//  Copyright © 2018年 aliyun. All rights reserved.
+//
+
+#import "OSSGetObjectACLRequest.h"
+
+@implementation OSSGetObjectACLRequest
+
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSGetObjectACLResult.h

@@ -0,0 +1,19 @@
+//
+//  OSSGetObjectACLResult.h
+//  AliyunOSSSDK
+//
+//  Created by huaixu on 2018/1/26.
+//  Copyright © 2018年 aliyun. All rights reserved.
+//
+
+#import "OSSResult.h"
+
+@interface OSSGetObjectACLResult : OSSResult
+
+/**
+ the ACL of object,valid values: @"private",@"public-read",@"public-read-write".
+ if object's ACL inherit from bucket,it will return @"default".
+ */
+@property (nonatomic, copy) NSString *grant;
+
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSGetObjectACLResult.m

@@ -0,0 +1,13 @@
+//
+//  OSSGetObjectACLResult.m
+//  AliyunOSSSDK
+//
+//  Created by huaixu on 2018/1/26.
+//  Copyright © 2018年 aliyun. All rights reserved.
+//
+
+#import "OSSGetObjectACLResult.h"
+
+@implementation OSSGetObjectACLResult
+
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSGetObjectTaggingRequest.h

@@ -0,0 +1,23 @@
+//
+//  GetObjectTaggingRequest.h
+//  AliyunOSSSDK
+//
+//  Created by ws on 2021/5/25.
+//  Copyright © 2021 aliyun. All rights reserved.
+//
+
+#import "OSSRequest.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface OSSGetObjectTaggingRequest : OSSRequest
+
+/* bucket name */
+@property (nonatomic, copy) NSString *bucketName;
+
+/* object name */
+@property (nonatomic, copy) NSString *objectKey;
+
+@end
+
+NS_ASSUME_NONNULL_END

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSGetObjectTaggingRequest.m

@@ -0,0 +1,17 @@
+//
+//  GetObjectTaggingRequest.m
+//  AliyunOSSSDK
+//
+//  Created by ws on 2021/5/25.
+//  Copyright © 2021 aliyun. All rights reserved.
+//
+
+#import "OSSGetObjectTaggingRequest.h"
+
+@implementation OSSGetObjectTaggingRequest
+
+- (NSDictionary *)requestParams {
+    return @{@"tagging": @""};
+}
+
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSGetObjectTaggingResult.h

@@ -0,0 +1,19 @@
+//
+//  GetObjectTaggingResult.h
+//  AliyunOSSSDK
+//
+//  Created by ws on 2021/5/25.
+//  Copyright © 2021 aliyun. All rights reserved.
+//
+
+#import "OSSResult.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface OSSGetObjectTaggingResult : OSSResult
+
+@property (nonatomic, strong) NSDictionary *tags;
+
+@end
+
+NS_ASSUME_NONNULL_END

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSGetObjectTaggingResult.m

@@ -0,0 +1,13 @@
+//
+//  GetObjectTaggingResult.m
+//  AliyunOSSSDK
+//
+//  Created by ws on 2021/5/25.
+//  Copyright © 2021 aliyun. All rights reserved.
+//
+
+#import "OSSGetObjectTaggingResult.h"
+
+@implementation OSSGetObjectTaggingResult
+
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSGetSymlinkRequest.h

@@ -0,0 +1,17 @@
+//
+//  OSSGetSymlinkRequest.h
+//  AliyunOSSSDK
+//
+//  Created by huaixu on 2018/8/1.
+//  Copyright © 2018年 aliyun. All rights reserved.
+//
+
+#import "OSSRequest.h"
+
+@interface OSSGetSymlinkRequest : OSSRequest
+
+@property (nonatomic, copy) NSString *bucketName;
+
+@property (nonatomic, copy) NSString *objectKey;
+
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSGetSymlinkRequest.m

@@ -0,0 +1,17 @@
+//
+//  OSSGetSymlinkRequest.m
+//  AliyunOSSSDK
+//
+//  Created by huaixu on 2018/8/1.
+//  Copyright © 2018年 aliyun. All rights reserved.
+//
+
+#import "OSSGetSymlinkRequest.h"
+
+@implementation OSSGetSymlinkRequest
+
+- (NSDictionary *)requestParams {
+    return @{@"symlink": @""};
+}
+
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSGetSymlinkResult.h

@@ -0,0 +1,13 @@
+//
+//  OSSGetSymlinkResult.h
+//  AliyunOSSSDK
+//
+//  Created by huaixu on 2018/8/1.
+//  Copyright © 2018年 aliyun. All rights reserved.
+//
+
+#import "OSSResult.h"
+
+@interface OSSGetSymlinkResult : OSSResult
+
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSGetSymlinkResult.m

@@ -0,0 +1,13 @@
+//
+//  OSSGetSymlinkResult.m
+//  AliyunOSSSDK
+//
+//  Created by huaixu on 2018/8/1.
+//  Copyright © 2018年 aliyun. All rights reserved.
+//
+
+#import "OSSGetSymlinkResult.h"
+
+@implementation OSSGetSymlinkResult
+
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSHttpResponseParser.h

@@ -0,0 +1,39 @@
+//
+//  OSSHttpResponseParser.h
+//  AliyunOSSSDK
+//
+//  Created by huaixu on 2018/1/22.
+//  Copyright © 2018年 aliyun. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+#import "OSSConstants.h"
+#import "OSSTask.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+ HTTP response parser
+ */
+@interface OSSHttpResponseParser : NSObject
+
+@property (nonatomic, copy) OSSNetworkingOnRecieveDataBlock onRecieveBlock;
+
+@property (nonatomic, strong) NSURL *downloadingFileURL;
+
+/**
+ *  A Boolean value that determines whether verfifying crc64.
+ When set to YES, it will verify crc64 when transmission is completed normally.
+ The default value of this property is NO.
+ */
+@property (nonatomic, assign) BOOL crc64Verifiable;
+
+- (instancetype)initForOperationType:(OSSOperationType)operationType;
+- (void)consumeHttpResponse:(NSHTTPURLResponse *)response;
+- (OSSTask *)consumeHttpResponseBody:(NSData *)data;
+- (nullable id)constructResultObject;
+- (void)reset;
+
+@end
+
+NS_ASSUME_NONNULL_END

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSHttpResponseParser.m

@@ -0,0 +1,704 @@
+//
+//  OSSHttpResponseParser.m
+//  AliyunOSSSDK
+//
+//  Created by huaixu on 2018/1/22.
+//  Copyright © 2018年 aliyun. All rights reserved.
+//
+
+#import "OSSHttpResponseParser.h"
+
+#import "NSMutableData+OSS_CRC.h"
+#import "OSSXMLDictionary.h"
+#import "OSSDefine.h"
+#import "OSSModel.h"
+#import "OSSUtil.h"
+#import "OSSLog.h"
+#import "OSSGetObjectACLResult.h"
+#import "OSSDeleteMultipleObjectsResult.h"
+#import "OSSGetBucketInfoResult.h"
+#import "OSSRestoreObjectResult.h"
+#import "OSSPutSymlinkResult.h"
+#import "OSSGetSymlinkResult.h"
+#import "OSSGetObjectTaggingResult.h"
+#import "OSSPutObjectTaggingResult.h"
+#import "OSSDeleteObjectTaggingResult.h"
+
+
+@implementation OSSHttpResponseParser {
+    
+    OSSOperationType _operationTypeForThisParser;
+    
+    NSFileHandle * _fileHandle;
+    NSMutableData * _collectingData;
+    NSHTTPURLResponse * _response;
+    uint64_t _crc64ecma;
+}
+
+- (void)reset {
+    _collectingData = nil;
+    _fileHandle = nil;
+    _response = nil;
+}
+
+- (instancetype)initForOperationType:(OSSOperationType)operationType {
+    if (self = [super init]) {
+        _operationTypeForThisParser = operationType;
+    }
+    return self;
+}
+
+- (void)consumeHttpResponse:(NSHTTPURLResponse *)response {
+    _response = response;
+}
+
+- (OSSTask *)consumeHttpResponseBody:(NSData *)data
+{
+    if (_crc64Verifiable&&(_operationTypeForThisParser == OSSOperationTypeGetObject))
+    {
+        NSMutableData *mutableData = [NSMutableData dataWithData:data];
+        if (_crc64ecma != 0)
+        {
+            _crc64ecma = [OSSUtil crc64ForCombineCRC1:_crc64ecma
+                                                 CRC2:[mutableData oss_crc64]
+                                               length:mutableData.length];
+        }else
+        {
+            _crc64ecma = [mutableData oss_crc64];
+        }
+    }
+    
+    if (self.onRecieveBlock) {
+        self.onRecieveBlock(data);
+        return [OSSTask taskWithResult:nil];
+    }
+    
+    NSError * error;
+    if (self.downloadingFileURL)
+    {
+        if (!_fileHandle)
+        {
+            NSFileManager * fm = [NSFileManager defaultManager];
+            NSString * dirName = [[self.downloadingFileURL path] stringByDeletingLastPathComponent];
+            if (![fm fileExistsAtPath:dirName])
+            {
+                [fm createDirectoryAtPath:dirName withIntermediateDirectories:YES attributes:nil error:&error];
+            }
+            if (![fm fileExistsAtPath:dirName] || error)
+            {
+                return [OSSTask taskWithError:[NSError errorWithDomain:OSSClientErrorDomain
+                                                                  code:OSSClientErrorCodeFileCantWrite
+                                                              userInfo:@{OSSErrorMessageTOKEN: [NSString stringWithFormat:@"Can't create dir at %@", dirName]}]];
+            }
+            [fm createFileAtPath:[self.downloadingFileURL path] contents:nil attributes:nil];
+            if (![fm fileExistsAtPath:[self.downloadingFileURL path]])
+            {
+                return [OSSTask taskWithError:[NSError errorWithDomain:OSSClientErrorDomain
+                                                                  code:OSSClientErrorCodeFileCantWrite
+                                                              userInfo:@{OSSErrorMessageTOKEN: [NSString stringWithFormat:@"Can't create file at %@", [self.downloadingFileURL path]]}]];
+            }
+            _fileHandle = [NSFileHandle fileHandleForWritingToURL:self.downloadingFileURL error:&error];
+            if (error)
+            {
+                return [OSSTask taskWithError:[NSError errorWithDomain:OSSClientErrorDomain
+                                                                  code:OSSClientErrorCodeFileCantWrite
+                                                              userInfo:[error userInfo]]];
+            }
+            [_fileHandle writeData:data];
+        } else
+        {
+            @try {
+                [_fileHandle writeData:data];
+            }
+            @catch (NSException *exception) {
+                return [OSSTask taskWithError:[NSError errorWithDomain:OSSServerErrorDomain
+                                                                  code:OSSClientErrorCodeFileCantWrite
+                                                              userInfo:@{OSSErrorMessageTOKEN: [exception description]}]];
+            }
+        }
+    } else
+    {
+        if (!_collectingData)
+        {
+            _collectingData = [[NSMutableData alloc] initWithData:data];
+        }
+        else
+        {
+            [_collectingData appendData:data];
+        }
+    }
+    return [OSSTask taskWithResult:nil];
+}
+
+- (void)parseResponseHeader:(NSHTTPURLResponse *)response toResultObject:(OSSResult *)result
+{
+    result.httpResponseCode = [_response statusCode];
+    result.httpResponseHeaderFields = [NSDictionary dictionaryWithDictionary:[_response allHeaderFields]];
+    [[_response allHeaderFields] enumerateKeysAndObjectsUsingBlock:^(id key, id obj, BOOL *stop) {
+        NSString * keyString = (NSString *)key;
+        if ([keyString isEqualToString:@"x-oss-request-id"])
+        {
+            result.requestId = obj;
+        }
+        else if ([keyString isEqualToString:@"x-oss-hash-crc64ecma"])
+        {
+            result.remoteCRC64ecma = obj;
+        }
+    }];
+}
+
+- (NSDictionary *)parseResponseHeaderToGetMeta:(NSHTTPURLResponse *)response
+{
+    NSMutableDictionary * meta = [NSMutableDictionary new];
+    
+    /* define a constant array to contain all meta header name */
+    static NSArray * OSSObjectMetaFieldNames = nil;
+    static dispatch_once_t onceToken;
+    dispatch_once(&onceToken, ^{
+        OSSObjectMetaFieldNames = @[@"Content-Type", @"Content-Length", @"Etag", @"Last-Modified", @"x-oss-request-id", @"x-oss-object-type",
+                                    @"If-Modified-Since", @"If-Unmodified-Since", @"If-Match", @"If-None-Match"];
+    });
+    /****************************************************************/
+    
+    [[_response allHeaderFields] enumerateKeysAndObjectsUsingBlock:^(id key, id obj, BOOL *stop) {
+        NSString * keyString = (NSString *)key;
+        if ([OSSObjectMetaFieldNames containsObject:keyString] || [keyString hasPrefix:@"x-oss-meta"]) {
+            [meta setObject:obj forKey:key];
+        }
+    }];
+    return meta;
+}
+
+- (nullable id)constructResultObject
+{
+    if (self.onRecieveBlock)
+    {
+        return nil;
+    }
+    
+    switch (_operationTypeForThisParser)
+    {
+        case OSSOperationTypeGetService:
+        {
+            OSSGetServiceResult * getServiceResult = [OSSGetServiceResult new];
+            if (_response)
+            {
+                [self parseResponseHeader:_response toResultObject:getServiceResult];
+            }
+            if (_collectingData)
+            {
+                NSDictionary * parseDict = [NSDictionary oss_dictionaryWithXMLData:_collectingData];
+                OSSLogVerbose(@"Get service dict: %@", parseDict);
+                if (parseDict)
+                {
+                    getServiceResult.ownerId = [[parseDict objectForKey:OSSOwnerXMLTOKEN] objectForKey:OSSIDXMLTOKEN];
+                    getServiceResult.ownerDispName = [[parseDict objectForKey:OSSOwnerXMLTOKEN] objectForKey:OSSDisplayNameXMLTOKEN];
+                    getServiceResult.prefix = [parseDict objectForKey:OSSPrefixXMLTOKEN];
+                    getServiceResult.marker = [parseDict objectForKey:OSSMarkerXMLTOKEN];
+                    getServiceResult.maxKeys = [[parseDict objectForKey:OSSMaxKeysXMLTOKEN] intValue];
+                    getServiceResult.isTruncated = [[parseDict objectForKey:OSSIsTruncatedXMLTOKEN] boolValue];
+                    getServiceResult.nextMarker = [parseDict objectForKey:OSSNextMarkerXMLTOKEN];
+
+                    id bucketObject = [[parseDict objectForKey:OSSBucketsXMLTOKEN] objectForKey:OSSBucketXMLTOKEN];
+                    if ([bucketObject isKindOfClass:[NSArray class]]) {
+                        getServiceResult.buckets = bucketObject;
+                    } else if ([bucketObject isKindOfClass:[NSDictionary class]]) {
+                        NSArray * arr = [NSArray arrayWithObject:bucketObject];
+                        getServiceResult.buckets = arr;
+                    } else {
+                        getServiceResult.buckets = nil;
+                    }
+                }
+            }
+            return getServiceResult;
+        }
+            
+        case OSSOperationTypeCreateBucket:
+        {
+            OSSCreateBucketResult * createBucketResult = [OSSCreateBucketResult new];
+            if (_response)
+            {
+                [self parseResponseHeader:_response toResultObject:createBucketResult];
+                [_response.allHeaderFields enumerateKeysAndObjectsUsingBlock:^(id key, id obj, BOOL *stop) {
+                    if ([((NSString *)key) isEqualToString:@"Location"]) {
+                        createBucketResult.location = obj;
+                        *stop = YES;
+                    }
+                }];
+            }
+            return createBucketResult;
+        }
+            
+        case OSSOperationTypeGetBucketACL:
+        {
+            OSSGetBucketACLResult * getBucketACLResult = [OSSGetBucketACLResult new];
+            if (_response)
+            {
+                [self parseResponseHeader:_response toResultObject:getBucketACLResult];
+            }
+            if (_collectingData)
+            {
+                NSDictionary * parseDict = [NSDictionary oss_dictionaryWithXMLData:_collectingData];
+                OSSLogVerbose(@"Get service dict: %@", parseDict);
+                if (parseDict)
+                {
+                    getBucketACLResult.aclGranted = [[parseDict objectForKey:OSSAccessControlListXMLTOKEN] objectForKey:OSSGrantXMLTOKEN];
+                }
+            }
+            return getBucketACLResult;
+        }
+            
+        case OSSOperationTypeDeleteBucket:
+        {
+            OSSDeleteBucketResult * deleteBucketResult = [OSSDeleteBucketResult new];
+            if (_response) {
+                [self parseResponseHeader:_response toResultObject:deleteBucketResult];
+            }
+            return deleteBucketResult;
+        }
+            
+        case OSSOperationTypeGetBucket:
+        {
+            OSSGetBucketResult * getBucketResult = [OSSGetBucketResult new];
+            if (_response) {
+                [self parseResponseHeader:_response toResultObject:getBucketResult];
+            }
+            if (_collectingData) {
+                NSDictionary * parsedDict = [NSDictionary oss_dictionaryWithXMLData:_collectingData];
+                OSSLogVerbose(@"Get bucket dict: %@", parsedDict);
+                
+                if (parsedDict) {
+                    getBucketResult.bucketName = [parsedDict objectForKey:OSSNameXMLTOKEN];
+                    getBucketResult.prefix = [parsedDict objectForKey:OSSPrefixXMLTOKEN];
+                    getBucketResult.marker = [parsedDict objectForKey:OSSMarkerXMLTOKEN];
+                    getBucketResult.nextMarker = [parsedDict objectForKey:OSSNextMarkerXMLTOKEN];
+                    getBucketResult.maxKeys = (int32_t)[[parsedDict objectForKey:OSSMaxKeysXMLTOKEN] integerValue];
+                    getBucketResult.delimiter = [parsedDict objectForKey:OSSDelimiterXMLTOKEN];
+                    getBucketResult.isTruncated = [[parsedDict objectForKey:OSSIsTruncatedXMLTOKEN] boolValue];
+                    
+                    id contentObject = [parsedDict objectForKey:OSSContentsXMLTOKEN];
+                    if ([contentObject isKindOfClass:[NSArray class]]) {
+                        getBucketResult.contents = contentObject;
+                    } else if ([contentObject isKindOfClass:[NSDictionary class]]) {
+                        NSArray * arr = [NSArray arrayWithObject:contentObject];
+                        getBucketResult.contents = arr;
+                    } else {
+                        getBucketResult.contents = nil;
+                    }
+                    
+                    NSMutableArray * commentPrefixesArr = [NSMutableArray new];
+                    id commentPrefixes = [parsedDict objectForKey:OSSCommonPrefixesXMLTOKEN];
+                    if ([commentPrefixes isKindOfClass:[NSArray class]]) {
+                        for (NSDictionary * prefix in commentPrefixes) {
+                            [commentPrefixesArr addObject:[prefix objectForKey:@"Prefix"]];
+                        }
+                    } else if ([commentPrefixes isKindOfClass:[NSDictionary class]]) {
+                        [commentPrefixesArr addObject:[(NSDictionary *)commentPrefixes objectForKey:@"Prefix"]];
+                    } else {
+                        commentPrefixesArr = nil;
+                    }
+                    
+                    getBucketResult.commentPrefixes = commentPrefixesArr;
+                }
+            }
+            return getBucketResult;
+        }
+            
+        case OSSOperationTypeListMultipartUploads:
+        {
+            OSSListMultipartUploadsResult * listMultipartUploadsResult = [OSSListMultipartUploadsResult new];
+            if (_response) {
+                [self parseResponseHeader:_response toResultObject:listMultipartUploadsResult];
+            }
+            if (_collectingData) {
+                NSDictionary * parsedDict = [NSDictionary oss_dictionaryWithXMLData:_collectingData];
+                OSSLogVerbose(@"List multipart uploads dict: %@", parsedDict);
+                
+                if (parsedDict) {
+                    listMultipartUploadsResult.bucketName = [parsedDict objectForKey:OSSBucketXMLTOKEN];
+                    listMultipartUploadsResult.prefix = [parsedDict objectForKey:OSSPrefixXMLTOKEN];
+                    listMultipartUploadsResult.uploadIdMarker = [parsedDict objectForKey:OSSUploadIdMarkerXMLTOKEN];
+                    listMultipartUploadsResult.nextUploadIdMarker = [parsedDict objectForKey:OSSUploadIdMarkerXMLTOKEN];
+                    listMultipartUploadsResult.keyMarker = [parsedDict objectForKey:OSSKeyMarkerXMLTOKEN];
+                    listMultipartUploadsResult.nextKeyMarker = [parsedDict objectForKey:OSSNextKeyMarkerXMLTOKEN];
+                    listMultipartUploadsResult.maxUploads = (int32_t)[[parsedDict objectForKey:OSSMaxUploadsXMLTOKEN] integerValue];
+                    listMultipartUploadsResult.delimiter = [parsedDict objectForKey:OSSDelimiterXMLTOKEN];
+                    listMultipartUploadsResult.isTruncated = [[parsedDict objectForKey:OSSIsTruncatedXMLTOKEN] boolValue];
+                    
+                    id contentObject = [parsedDict objectForKey:OSSUploadXMLTOKEN];
+                    if ([contentObject isKindOfClass:[NSArray class]]) {
+                        listMultipartUploadsResult.uploads = contentObject;
+                    } else if ([contentObject isKindOfClass:[NSDictionary class]]) {
+                        NSArray * arr = [NSArray arrayWithObject:contentObject];
+                        listMultipartUploadsResult.uploads = arr;
+                    } else {
+                        listMultipartUploadsResult.uploads = nil;
+                    }
+                    
+                    NSMutableArray * commentPrefixesArr = [NSMutableArray new];
+                    id commentPrefixes = [parsedDict objectForKey:OSSCommonPrefixesXMLTOKEN];
+                    if ([commentPrefixes isKindOfClass:[NSArray class]]) {
+                        for (NSDictionary * prefix in commentPrefixes) {
+                            [commentPrefixesArr addObject:[prefix objectForKey:@"Prefix"]];
+                        }
+                    } else if ([commentPrefixes isKindOfClass:[NSDictionary class]]) {
+                        [commentPrefixesArr addObject:[(NSDictionary *)commentPrefixes objectForKey:@"Prefix"]];
+                    } else {
+                        commentPrefixesArr = nil;
+                    }
+                    
+                    listMultipartUploadsResult.commonPrefixes = commentPrefixesArr;
+                }
+            }
+            return listMultipartUploadsResult;
+        }
+            
+        case OSSOperationTypeHeadObject:
+        {
+            OSSHeadObjectResult * headObjectResult = [OSSHeadObjectResult new];
+            if (_response)
+            {
+                [self parseResponseHeader:_response toResultObject:headObjectResult];
+                headObjectResult.objectMeta = [self parseResponseHeaderToGetMeta:_response];
+            }
+            return headObjectResult;
+        }
+            
+        case OSSOperationTypeGetObject:
+        {
+            OSSGetObjectResult * getObejctResult = [OSSGetObjectResult new];
+            OSSLogDebug(@"GetObjectResponse: %@", _response);
+            if (_response)
+            {
+                [self parseResponseHeader:_response toResultObject:getObejctResult];
+                getObejctResult.objectMeta = [self parseResponseHeaderToGetMeta:_response];
+                if (_crc64ecma != 0)
+                {
+                    getObejctResult.localCRC64ecma = [NSString stringWithFormat:@"%llu",_crc64ecma];
+                }
+            }
+            if (_fileHandle) {
+                [_fileHandle closeFile];
+            }
+            
+            if (_collectingData) {
+                getObejctResult.downloadedData = _collectingData;
+            }
+            return getObejctResult;
+        }
+        case OSSOperationTypeGetObjectACL:
+        {
+            OSSGetObjectACLResult * getObjectACLResult = [OSSGetObjectACLResult new];
+            OSSLogDebug(@"GetObjectResponse: %@", _response);
+            if (_response)
+            {
+                [self parseResponseHeader:_response toResultObject:getObjectACLResult];
+            }
+            
+            if (_collectingData) {
+                NSDictionary * parseDict = [NSDictionary oss_dictionaryWithXMLData:_collectingData];
+                OSSLogVerbose(@"Get service dict: %@", parseDict);
+                getObjectACLResult.grant = parseDict[@"AccessControlList"][@"Grant"];
+            }
+            
+            
+            return getObjectACLResult;
+        }
+            
+        case OSSOperationTypePutObject:
+        {
+            OSSPutObjectResult * putObjectResult = [OSSPutObjectResult new];
+            if (_response)
+            {
+                [self parseResponseHeader:_response toResultObject:putObjectResult];
+                [_response.allHeaderFields enumerateKeysAndObjectsUsingBlock:^(id key, id obj, BOOL *stop) {
+                    if ([((NSString *)key) isEqualToString:@"Etag"]) {
+                        putObjectResult.eTag = obj;
+                        *stop = YES;
+                    }
+                }];
+            }
+            if (_collectingData) {
+                putObjectResult.serverReturnJsonString = [[NSString alloc] initWithData:_collectingData encoding:NSUTF8StringEncoding];
+            }
+            return putObjectResult;
+        }
+            
+        case OSSOperationTypeAppendObject:
+        {
+            OSSAppendObjectResult * appendObjectResult = [OSSAppendObjectResult new];
+            if (_response) {
+                [self parseResponseHeader:_response toResultObject:appendObjectResult];
+                [_response.allHeaderFields enumerateKeysAndObjectsUsingBlock:^(id key, id obj, BOOL *stop) {
+                    if ([((NSString *)key) isEqualToString:@"Etag"]) {
+                        appendObjectResult.eTag = obj;
+                    }
+                    if ([((NSString *)key) isEqualToString:@"x-oss-next-append-position"]) {
+                        appendObjectResult.xOssNextAppendPosition = [((NSString *)obj) longLongValue];
+                    }
+                }];
+            }
+            return appendObjectResult;
+        }
+            
+        case OSSOperationTypeDeleteObject: {
+            OSSDeleteObjectResult * deleteObjectResult = [OSSDeleteObjectResult new];
+            if (_response) {
+                [self parseResponseHeader:_response toResultObject:deleteObjectResult];
+            }
+            return deleteObjectResult;
+        }
+        case OSSOperationTypeDeleteMultipleObjects: {
+            OSSDeleteMultipleObjectsResult * deleteObjectResult = [OSSDeleteMultipleObjectsResult new];
+            if (_response) {
+                [self parseResponseHeader:_response toResultObject:deleteObjectResult];
+            }
+            
+            if (_collectingData) {
+                NSDictionary *dict = [NSDictionary oss_dictionaryWithXMLData:_collectingData];
+                deleteObjectResult.encodingType = dict[@"EncodingType"];
+                deleteObjectResult.deletedObjects = dict[@"Deleted"];
+            }
+            
+            return deleteObjectResult;
+        }
+        case OSSOperationTypePutObjectACL: {
+            OSSPutObjectACLResult * putObjectACLResult = [OSSPutObjectACLResult new];
+            if (_response) {
+                [self parseResponseHeader:_response toResultObject:putObjectACLResult];
+            }
+            return putObjectACLResult;
+        }
+            
+        case OSSOperationTypeCopyObject: {
+            OSSCopyObjectResult * copyObjectResult = [OSSCopyObjectResult new];
+            if (_response) {
+                [self parseResponseHeader:_response toResultObject:copyObjectResult];
+            }
+            if (_collectingData) {
+                OSSLogVerbose(@"copy object dict: %@", [NSDictionary oss_dictionaryWithXMLData:_collectingData]);
+                NSDictionary * parsedDict = [NSDictionary oss_dictionaryWithXMLData:_collectingData];
+                if (parsedDict) {
+                    copyObjectResult.lastModifed = [parsedDict objectForKey:OSSLastModifiedXMLTOKEN];
+                    copyObjectResult.eTag = [parsedDict objectForKey:OSSETagXMLTOKEN];
+                }
+            }
+            return copyObjectResult;
+        }
+            
+        case OSSOperationTypeInitMultipartUpload: {
+            OSSInitMultipartUploadResult * initMultipartUploadResult = [OSSInitMultipartUploadResult new];
+            if (_response) {
+                [self parseResponseHeader:_response toResultObject:initMultipartUploadResult];
+            }
+            if (_collectingData) {
+                NSDictionary * parsedDict = [NSDictionary oss_dictionaryWithXMLData:_collectingData];
+                OSSLogVerbose(@"init multipart upload result: %@", parsedDict);
+                if (parsedDict) {
+                    initMultipartUploadResult.uploadId = [parsedDict objectForKey:OSSUploadIdXMLTOKEN];
+                }
+            }
+            return initMultipartUploadResult;
+        }
+            
+        case OSSOperationTypeUploadPart: {
+            OSSUploadPartResult * uploadPartResult = [OSSUploadPartResult new];
+            if (_response) {
+                [self parseResponseHeader:_response toResultObject:uploadPartResult];
+                [_response.allHeaderFields enumerateKeysAndObjectsUsingBlock:^(id key, id obj, BOOL *stop) {
+                    if ([((NSString *)key) isEqualToString:@"Etag"]) {
+                        uploadPartResult.eTag = obj;
+                        *stop = YES;
+                    }
+                }];
+            }
+            return uploadPartResult;
+        }
+            
+        case OSSOperationTypeCompleteMultipartUpload: {
+            OSSCompleteMultipartUploadResult * completeMultipartUploadResult = [OSSCompleteMultipartUploadResult new];
+            if (_response) {
+                [self parseResponseHeader:_response toResultObject:completeMultipartUploadResult];
+            }
+            if (_collectingData) {
+                if ([[[_response.allHeaderFields objectForKey:OSSHttpHeaderContentType] description] isEqual:@"application/xml"]) {
+                    OSSLogVerbose(@"complete multipart upload result: %@", [NSDictionary oss_dictionaryWithXMLData:_collectingData]);
+                    NSDictionary * parsedDict = [NSDictionary oss_dictionaryWithXMLData:_collectingData];
+                    if (parsedDict) {
+                        completeMultipartUploadResult.location = [parsedDict objectForKey:OSSLocationXMLTOKEN];
+                        completeMultipartUploadResult.eTag = [parsedDict objectForKey:OSSETagXMLTOKEN];
+                    }
+                } else {
+                    completeMultipartUploadResult.serverReturnJsonString = [[NSString alloc] initWithData:_collectingData encoding:NSUTF8StringEncoding];
+                }
+            }
+            return completeMultipartUploadResult;
+        }
+            
+        case OSSOperationTypeListMultipart: {
+            OSSListPartsResult * listPartsReuslt = [OSSListPartsResult new];
+            if (_response) {
+                [self parseResponseHeader:_response toResultObject:listPartsReuslt];
+            }
+            if (_collectingData) {
+                NSDictionary * parsedDict = [NSDictionary oss_dictionaryWithXMLData:_collectingData];
+                OSSLogVerbose(@"list multipart upload result: %@", parsedDict);
+                if (parsedDict) {
+                    listPartsReuslt.nextPartNumberMarker = [[parsedDict objectForKey:OSSNextPartNumberMarkerXMLTOKEN] intValue];
+                    listPartsReuslt.maxParts = [[parsedDict objectForKey:OSSMaxPartsXMLTOKEN] intValue];
+                    listPartsReuslt.isTruncated = [[parsedDict objectForKey:OSSIsTruncatedXMLTOKEN] boolValue];
+                    
+                    id partsObject = [parsedDict objectForKey:OSSPartXMLTOKEN];
+                    if ([partsObject isKindOfClass:[NSArray class]]) {
+                        listPartsReuslt.parts = partsObject;
+                    } else if ([partsObject isKindOfClass:[NSDictionary class]]) {
+                        NSArray * arr = [NSArray arrayWithObject:partsObject];
+                        listPartsReuslt.parts = arr;
+                    } else {
+                        listPartsReuslt.parts = nil;
+                    }
+                }
+            }
+            return listPartsReuslt;
+        }
+            
+        case OSSOperationTypeAbortMultipartUpload: {
+            OSSAbortMultipartUploadResult * abortMultipartUploadResult = [OSSAbortMultipartUploadResult new];
+            if (_response) {
+                [self parseResponseHeader:_response toResultObject:abortMultipartUploadResult];
+            }
+            return abortMultipartUploadResult;
+        }
+        case OSSOperationTypeTriggerCallBack: {
+            OSSCallBackResult *callbackResult = [OSSCallBackResult new];
+            if (_response) {
+                [self parseResponseHeader:_response toResultObject:callbackResult];
+            }
+            
+            if (_collectingData) {
+                if ([[[_response.allHeaderFields objectForKey:OSSHttpHeaderContentType] description] isEqual:@"application/xml"]) {
+                    NSDictionary * parsedDict = [NSDictionary oss_dictionaryWithXMLData:_collectingData];
+                    OSSLogVerbose(@"callback trigger result<xml>: %@", parsedDict);
+                    callbackResult.serverReturnXML = parsedDict;
+                } else if ([[[_response.allHeaderFields objectForKey:OSSHttpHeaderContentType] description] isEqual:@"application/json"]) {
+                    callbackResult.serverReturnJsonString = [[NSString alloc] initWithData:_collectingData encoding:NSUTF8StringEncoding];
+                    OSSLogVerbose(@"callback trigger result<json>: %@", callbackResult.serverReturnJsonString);
+                }
+            }
+            return callbackResult;
+        }
+        case OSSOperationTypeImagePersist: {
+            OSSImagePersistResult *imagePersistResult = [OSSImagePersistResult new];
+            if (_response) {
+                [self parseResponseHeader:_response toResultObject:imagePersistResult];
+            }
+            return imagePersistResult;
+        }
+        case OSSOperationTypeGetBucketInfo: {
+            OSSGetBucketInfoResult *bucketInfoResult = [[OSSGetBucketInfoResult alloc] init];
+            if (_collectingData)
+            {
+                NSDictionary * parseDict = [NSDictionary oss_dictionaryWithXMLData:_collectingData];
+                if ([parseDict valueForKey:@"Bucket"])
+                {
+                    NSDictionary *result = [parseDict valueForKey:@"Bucket"];
+                    OSSLogVerbose(@"Get bucketInfo dict: %@", parseDict);
+                    bucketInfoResult.bucketName = [result valueForKey:@"Name"];
+                    bucketInfoResult.storageClass = [result valueForKey:@"StorageClass"];
+                    bucketInfoResult.location = [result valueForKey:@"Location"];
+                    bucketInfoResult.intranetEndpoint = [result valueForKey:@"IntranetEndpoint"];
+                    bucketInfoResult.extranetEndpoint = [result valueForKey:@"ExtranetEndpoint"];
+                    bucketInfoResult.creationDate = [result valueForKey:@"CreationDate"];
+                    
+                    if ([result valueForKey:@"Owner"]) {
+                        bucketInfoResult.owner = [[OSSBucketOwner alloc] init];
+                        bucketInfoResult.owner.userName = [[result valueForKey:@"Owner"] valueForKey:@"DisplayName"];
+                        bucketInfoResult.owner.userId = [[result valueForKey:@"Owner"] valueForKey:@"ID"];
+                    }
+                    
+                    if ([result valueForKey:@"AccessControlList"]) {
+                        bucketInfoResult.acl = [OSSAccessControlList new];
+                        bucketInfoResult.acl.grant = [[result valueForKey:@"AccessControlList"] valueForKey:@"Grant"];
+                    }
+                }
+            }
+            if (_response) {
+                [self parseResponseHeader:_response toResultObject:bucketInfoResult];
+            }
+            return bucketInfoResult;
+        }
+        case OSSOperationTypeRestoreObject: {
+            OSSRestoreObjectResult * restoreObjectResult = [OSSRestoreObjectResult new];
+            if (_response) {
+                [self parseResponseHeader:_response toResultObject:restoreObjectResult];
+            }
+            return restoreObjectResult;
+        }
+        case OSSOperationTypePutSymlink: {
+            OSSPutSymlinkResult * putSymlinkResult = [OSSPutSymlinkResult new];
+            if (_response) {
+                [self parseResponseHeader:_response toResultObject:putSymlinkResult];
+            }
+            return putSymlinkResult;
+        }
+        case OSSOperationTypeGetSymlink: {
+            OSSGetSymlinkResult * getSymlinkResult = [OSSGetSymlinkResult new];
+            if (_response) {
+                [self parseResponseHeader:_response toResultObject:getSymlinkResult];
+            }
+            return getSymlinkResult;
+        }
+        case OSSOperationTypeGetObjectTagging: {
+            OSSGetObjectTaggingResult *result = [OSSGetObjectTaggingResult new];
+            NSMutableDictionary *tags = [NSMutableDictionary dictionary];
+            if (_collectingData)
+            {
+                NSDictionary * parseDict = [NSDictionary oss_dictionaryWithXMLData:_collectingData];
+                NSDictionary *tagSet = [parseDict objectForKey:@"TagSet"];
+                if (tagSet) {
+                    if ([tagSet[@"Tag"] isKindOfClass:[NSArray class]]) {
+                        for (NSDictionary * tag in tagSet[@"Tag"]) {
+                            NSString *key = tag[@"Key"];
+                            NSString *value = tag[@"Value"];
+                            if (key && value) {
+                                [tags setObject:value forKey:key];
+                            }
+                        }
+                    } else if ([tagSet[@"Tag"] isKindOfClass:[NSDictionary class]]) {
+                        NSString *key = tagSet[@"Tag"][@"Key"];
+                        NSString *value = tagSet[@"Tag"][@"Value"];
+                        if (key && value) {
+                            [tags setObject:value forKey:key];
+                        }
+                    }
+                }
+            }
+            result.tags = tags;
+            if (_response) {
+                [self parseResponseHeader:_response toResultObject:result];
+            }
+            return result;
+        }
+        case OSSOperationTypePutObjectTagging: {
+            OSSPutObjectTaggingResult *result = [OSSPutObjectTaggingResult new];
+            if (_response) {
+                [self parseResponseHeader:_response toResultObject:result];
+            }
+            return result;
+        }
+        case OSSOperationTypeDeleteObjectTagging: {
+            OSSDeleteObjectTaggingResult *result = [OSSDeleteObjectTaggingResult new];
+            if (_response) {
+                [self parseResponseHeader:_response toResultObject:result];
+            }
+            return result;
+        }
+        default: {
+            OSSLogError(@"unknown operation type");
+            break;
+        }
+    }
+    return nil;
+}
+
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSHttpdns.h

@@ -0,0 +1,16 @@
+//
+//  OSSHttpdns.h
+//  AliyunOSSiOS
+//
+//  Created by zhouzhuo on 5/1/16.
+//  Copyright © 2016 zhouzhuo. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+
+@interface OSSHttpdns : NSObject
+
++ (instancetype)sharedInstance;
+
+- (NSString *)asynGetIpByHost:(NSString *)host;
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSHttpdns.m

@@ -0,0 +1,147 @@
+//
+//  OSSHttpdns.m
+//  AliyunOSSiOS
+//
+//  Created by zhouzhuo on 5/1/16.
+//  Copyright © 2016 zhouzhuo. All rights reserved.
+//
+
+#import "OSSLog.h"
+#import "OSSHttpdns.h"
+#import "OSSIPv6Adapter.h"
+
+NSString * const OSS_HTTPDNS_SERVER_IP = @"203.107.1.1";
+NSString * const OSS_HTTPDNS_SERVER_PORT = @"80";
+
+NSString * const ACCOUNT_ID = @"181345";
+NSTimeInterval const MAX_ENDURABLE_EXPIRED_TIME_IN_SECOND = 60; // The DNS entry's expiration time in seconds. After it expires, the entry is invalid.
+NSTimeInterval const PRERESOLVE_IN_ADVANCE_IN_SECOND = 10; // Once the remaining valid time of an DNS entry is less than this number, issue a DNS request to prefetch the data.
+
+@interface IpObject : NSObject
+
+@property (nonatomic, copy) NSString * ip;
+@property (nonatomic, assign) NSTimeInterval expiredTime;
+
+@end
+
+@implementation IpObject
+@end
+
+
+@implementation OSSHttpdns {
+    NSMutableDictionary * gHostIpMap;
+    NSMutableSet * penddingSet;
+}
+
++ (instancetype)sharedInstance {
+    static OSSHttpdns * sharedInstance = nil;
+    static dispatch_once_t onceToken;
+    dispatch_once(&onceToken, ^{
+        sharedInstance = [OSSHttpdns new];
+    });
+    return sharedInstance;
+}
+
+- (instancetype)init {
+    if (self = [super init]) {
+        gHostIpMap = [NSMutableDictionary new];
+        penddingSet = [NSMutableSet new];
+    }
+    return self;
+}
+
+/**
+ *  OSS SDK specific
+ *
+ *  @param host it needs strictly follow the domain's format, such as oss-cn-hangzhou.aliyuncs.com
+ *
+ *  @return an ip in the ip list of the resolved host.
+ */
+- (NSString *)asynGetIpByHost:(NSString *)host {
+    IpObject * ipObject = [gHostIpMap objectForKey:host];
+    if (!ipObject) {
+
+        // if the host is not resolved, asynchronously resolve it and return nil
+        [self resolveHost:host];
+        return nil;
+    } else if ([[NSDate date] timeIntervalSince1970] - ipObject.expiredTime > MAX_ENDURABLE_EXPIRED_TIME_IN_SECOND) {
+
+        // If the entry is expired, asynchronously resolve it and return nil.
+        [self resolveHost:host];
+        return nil;
+    } else if (ipObject.expiredTime -[[NSDate date] timeIntervalSince1970] < PRERESOLVE_IN_ADVANCE_IN_SECOND) {
+
+        // If the entry is about to expire, asynchronously resolve it and return the current value.
+        [self resolveHost:host];
+        return ipObject.ip;
+    } else {
+
+        // returns the current result.
+        return ipObject.ip;
+    }
+}
+
+/**
+ *  resolve the host asynchronously
+
+ *  If the host is being resolved, the call will be skipped.
+ *
+ *  @param host the host to resolve
+ */
+- (void)resolveHost:(NSString *)host {
+
+    @synchronized (self) {
+        if ([penddingSet containsObject:host]) {
+            return;
+        } else {
+            [penddingSet addObject:host];
+        }
+    }
+
+    NSURL * url = [NSURL URLWithString:[NSString stringWithFormat:@"https://%@/%@/d?host=%@", [[OSSIPv6Adapter getInstance] handleIpv4Address:OSS_HTTPDNS_SERVER_IP], ACCOUNT_ID, host]];
+    NSURLSession * session = [NSURLSession sharedSession];
+
+    NSURLSessionDataTask * dataTask = [session dataTaskWithURL:url completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) {
+
+        IpObject * ipObject = nil;
+        NSUInteger statusCode = ((NSHTTPURLResponse *)response).statusCode;
+        if (statusCode != 200) {
+            OSSLogError(@"Httpdns resolve host: %@ failed, responseCode: %lu", host, (unsigned long)statusCode);
+        } else {
+            NSError *error = nil;
+            NSDictionary *json = nil;
+            if (data != nil){
+                json = [NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:&error];
+            }
+            
+            if (error != nil || json == nil){
+                return;
+            }
+
+            NSTimeInterval expiredTime = [[NSDate new] timeIntervalSince1970] + [[json objectForKey:@"ttl"] longLongValue];
+
+            NSArray *ips = [json objectForKey:@"ips"];
+            if (ips == nil || [ips count] == 0) {
+                OSSLogError(@"Httpdns resolve host: %@ failed, ip list empty.", host);
+            } else {
+                NSString * ip = ips[0];
+                ipObject = [IpObject new];
+                ipObject.expiredTime = expiredTime;
+                ipObject.ip = ip;
+                OSSLogDebug(@"Httpdns resolve host: %@ success, ip: %@, expiredTime: %lf", host, ipObject.ip, ipObject.expiredTime);
+            }
+        }
+
+        @synchronized (self) {
+            if (ipObject) {
+                gHostIpMap[host] = ipObject;
+            }
+
+            [penddingSet removeObject:host];
+        }
+    }];
+
+    [dataTask resume];
+}
+
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSIPv6/OSSIPv6Adapter.h

@@ -0,0 +1,114 @@
+/*
+ * Copyright (c) 2000-2015 Apple Inc. All rights reserved.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
+ *
+ * Please obtain a copy of the License at
+ * https://www.opensource.apple.com/apsl/ and read it before using this file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
+ */
+/*
+ * Copyright (c) 1980, 1986, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)route.h	8.3 (Berkeley) 4/19/94
+ * $FreeBSD: src/sys/net/route.h,v 1.36.2.1 2000/08/16 06:14:23 jayanth Exp $
+ */
+
+
+#ifndef AlicloudIPv6Adapter_h
+#define AlicloudIPv6Adapter_h
+#import <Foundation/Foundation.h>
+
+@interface OSSIPv6Adapter : NSObject
+
++ (instancetype)getInstance;
+
+/**
+ *	@brief	Checks if it's a IPv6-only network. If it's true, it's IPv6-only.
+ *
+ *	@return return YES for IPv6-only network,otherWise return NO
+ */
+- (BOOL)isIPv6OnlyNetwork;
+
+/**
+ *	@brief	Refresh the IPV6-only check
+ *
+ *	@return return YES for IPv6-only network,otherWise return NO
+ */
+- (BOOL)reResolveIPv6OnlyStatus;
+
+/**
+ *	@brief	Adapts the IPv4 address into IPv6 format under IPv6-only network.
+ *          For example:
+                42.156.220.114 -> 64:ff9b::2a9c:dc72
+ *	@param 	addr
+ *          ip address
+ *
+ *	@return return an IPv6 address
+ */
+- (NSString *)handleIpv4Address:(NSString *)addr;
+
+/**
+ *	@brief	Checks if it's an IPv4 address.
+ *
+ *	@return return YES while addr is an IPv4 address,otherwise return NO
+ */
+- (BOOL)isIPv4Address:(NSString *)addr;
+
+/**
+ *	@brief	Checks if it's an IPv6 address
+ *
+ *	@return return YES while addr is an IPv6 address,otherwise return NO
+ */
+- (BOOL)isIPv6Address:(NSString *)addr;
+
+@end
+
+#endif /* OSSIPv6Adapter_h */

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSIPv6/OSSIPv6Adapter.m

@@ -0,0 +1,196 @@
+//
+//  OSSIPv6Adapter.m
+//
+//  Created by lingkun on 16/5/16.
+//  Copyright © 2016 Ali. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+#import "OSSIPv6Adapter.h"
+#import "OSSIPv6PrefixResolver.h"
+#import "OSSLog.h"
+
+#include <arpa/inet.h>
+#include <dns.h>
+#include <err.h>
+#include <ifaddrs.h>
+#include <net/if.h>
+#include <netdb.h>
+#include <netinet/in.h>
+#include <resolv.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <sys/sysctl.h>
+
+#if TARGET_OS_IOS
+#import <UIKit/UIApplication.h>
+#elif TARGET_OS_OSX
+#import <AppKit/NSApplication.h>
+#endif
+
+#define UNKNOWN_STACK         0
+#define SUPPORT_IPV4_STACK    1
+#define SUPPORT_IPV6_STACK    2
+#define ROUNDUP_LEN(a) \
+((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long))
+#define TypeEN    "en0"
+
+#define IOS_9_VERSION     @"9.0"
+
+@implementation OSSIPv6Adapter
+{
+    BOOL isIPv6Only;
+    BOOL isIPv6OnlyResolved;
+}
+
+- (instancetype)init {
+    if (self = [super init]) {
+        isIPv6Only = NO;
+        isIPv6OnlyResolved = NO;
+        
+        NSString *notificationName;
+#if TARGET_OS_IOS
+        notificationName = UIApplicationDidBecomeActiveNotification;
+#elif TARGET_OS_OSX
+        notificationName = NSApplicationDidBecomeActiveNotification;
+#endif
+
+        // When App switches to active status, refresh the IPv6-only check.
+        NSNotificationCenter *defaultCenter = [NSNotificationCenter defaultCenter];
+        [defaultCenter addObserver:self
+                          selector:@selector(appDidBecomeActiveFunc)
+                              name:notificationName
+                            object:nil];
+    }
+    return self;
+}
+
++ (instancetype)getInstance {
+    static id singletonInstance = nil;
+    static dispatch_once_t once_token;
+    dispatch_once(&once_token, ^{
+        if (!singletonInstance) {
+            singletonInstance = [[super allocWithZone:NULL] init];
+        }
+    });
+    return singletonInstance;
+}
+
+- (BOOL)isIPv6OnlyNetwork {
+    @synchronized(self) {
+        if (isIPv6OnlyResolved) {
+            return isIPv6Only;
+        }
+        
+        OSSLogDebug(@"Start resolved network to see if in IPv6-Only env.");
+        int localStack = 0;
+        
+        localStack = SUPPORT_IPV4_STACK | SUPPORT_IPV6_STACK;
+        localStack &= [self getDNSServersIpStack];
+        
+        if (localStack & SUPPORT_IPV4_STACK) {
+            // support IPv4
+            isIPv6Only = NO;
+        } else if (localStack & SUPPORT_IPV6_STACK) {
+            // IPv6-Only
+            isIPv6Only = YES;
+            [[OSSIPv6PrefixResolver getInstance] updateIPv6Prefix];
+        } else {
+            OSSLogDebug(@"[%s]: Error.", __FUNCTION__);
+            isIPv6Only = NO;
+        }
+        isIPv6OnlyResolved = YES;
+        if (isIPv6Only) {
+            OSSLogDebug(@"[%s]: IPv6-Only network now.", __FUNCTION__);
+        } else {
+            OSSLogDebug(@"[%s]: Not IPv6-Only network now.", __FUNCTION__);
+        }
+        return isIPv6Only;
+    }
+}
+
+- (void)appDidBecomeActiveFunc {
+    OSSLogDebug(@"[%s]: App become active, refresh IPv6-Only status.", __FUNCTION__);
+    [self reResolveIPv6OnlyStatus];
+}
+
+- (BOOL)reResolveIPv6OnlyStatus {
+    isIPv6OnlyResolved = NO;
+    return [self isIPv6OnlyNetwork];
+}
+
+- (NSString *)handleIpv4Address:(NSString *)addr {
+    if (addr == nil || addr.length == 0) {
+        return nil;
+    }
+    
+    if ([self isIPv6Address:addr]) return [NSString stringWithFormat:@"[%@]", addr];
+    
+    NSString *convertedAddr;
+    if ([self isIPv6OnlyNetwork]) {
+        convertedAddr = [[OSSIPv6PrefixResolver getInstance] convertIPv4toIPv6:addr];
+        return [NSString stringWithFormat:@"[%@]", convertedAddr];
+    } else  {
+        convertedAddr = addr;
+    }
+    return convertedAddr;
+}
+
+/**
+ *	@brief	Looks up the DNS server stack and returns the flag combinations of SUPPORT_IPV4_STACK and SUPPORT_IPV6_STACK.
+ *
+ *	@return the flag combinations of SUPPORT_IPV4_STACK and SUPPORT_IPV6_STACK
+ */
+- (int)getDNSServersIpStack {
+    int dns_stack = 0;
+    res_state res = malloc(sizeof(struct __res_state));
+    int result = res_ninit(res);
+    if (result == 0) {
+        union res_9_sockaddr_union *addr_union = malloc(res->nscount * sizeof(union res_9_sockaddr_union));
+        res_getservers(res, addr_union, res->nscount);
+        for (int i = 0; i < res->nscount; i++) {
+            if (addr_union[i].sin.sin_family == AF_INET) {
+                char ip[INET_ADDRSTRLEN];
+                if (inet_ntop(AF_INET, &(addr_union[i].sin.sin_addr), ip, INET_ADDRSTRLEN)) {
+                    dns_stack |= SUPPORT_IPV4_STACK;
+                }
+            } else if (addr_union[i].sin6.sin6_family == AF_INET6) {
+                char ip[INET6_ADDRSTRLEN];
+                if (inet_ntop(AF_INET6, &(addr_union[i].sin6.sin6_addr), ip, INET6_ADDRSTRLEN)) {
+                    dns_stack |= SUPPORT_IPV6_STACK;
+                }
+            } else {
+                OSSLogDebug(@"%s: Undefined family.", __FUNCTION__);
+            }
+        }
+        free(addr_union);
+    }
+    res_ndestroy(res);
+    free(res);
+    return dns_stack;
+}
+
+- (BOOL)isIPv4Address:(NSString *)addr {
+    if (addr == nil) {
+        return NO;
+    }
+    const char *utf8 = [addr UTF8String];
+    // Check valid IPv4.
+    struct in_addr dst;
+    int success = inet_pton(AF_INET, utf8, &(dst.s_addr));
+    return success == 1;
+}
+
+- (BOOL)isIPv6Address:(NSString *)addr {
+    if (addr == nil) {
+        return NO;
+    }
+    const char *utf8 = [addr UTF8String];
+    // Check valid IPv6.
+    struct in6_addr dst6;
+    int success = inet_pton(AF_INET6, utf8, &dst6);
+    return (success == 1);
+}
+
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSIPv6/OSSIPv6PrefixResolver.h

@@ -0,0 +1,23 @@
+//
+//  OSSIPv6PrefixResolver.h
+//
+//  Created by lingkun on 16/5/16.
+//  Edit by zhouzhuo on 16/5/22
+//  Copyright © 2016 Ali. All rights reserved.
+//
+
+#ifndef AlicloudIPv6PrefixResolver_h
+#define AlicloudIPv6PrefixResolver_h
+#import <Foundation/Foundation.h>
+
+@interface OSSIPv6PrefixResolver : NSObject
+
++ (instancetype)getInstance;
+
+- (void)updateIPv6Prefix;
+
+- (NSString *)convertIPv4toIPv6:(NSString *)ipv4;
+
+@end
+
+#endif /* OSSIPv6PrefixResolver_h */

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSIPv6/OSSIPv6PrefixResolver.m

@@ -0,0 +1,205 @@
+//
+//  OSSIPv6PrefixResolver.m
+//
+//  Created by lingkun on 16/5/16.
+//  Edit by zhouzhuo on 2016/5/22
+//  Copyright © 2016 Ali. All rights reserved.
+
+#import "OSSIPv6PrefixResolver.h"
+#import "OSSLog.h"
+
+#import <Foundation/Foundation.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+#include <netinet/in.h>
+#include <sys/socket.h>
+
+static const __uint8_t NS_PREFIX_32[4] = {0x20, 0x01, 0x0d, 0xb8};
+static const __uint8_t NS_PREFIX_40[5] = {0x20, 0x01, 0x0d, 0xb8, 0x01};
+static const __uint8_t NS_PREFIX_48[6] = {0x20, 0x01, 0x0d, 0xb8, 0x01, 0x22};
+static const __uint8_t NS_PREFIX_56[7] = {0x20, 0x01, 0x0d, 0xb8, 0x01, 0x22, 0x03};
+static const __uint8_t NS_PREFIX_64[8] = {0x20, 0x01, 0x0d, 0xb8, 0x01, 0x22, 0x03, 0x44};
+static const __uint8_t NS_PREFIX_96[12] = {0x20, 0x01, 0x0d, 0xb8, 0x01, 0x22, 0x03, 0x44, 0x00, 0x00, 0x00, 0x00};
+static const __uint8_t WK_PREFIX_96[12] = {0x00, 0x64, 0xff, 0x9b, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
+
+static const __uint8_t* V6_PREFIX_CONTENT_TABLE[7] = {
+    WK_PREFIX_96,
+    NS_PREFIX_32,
+    NS_PREFIX_40,
+    NS_PREFIX_48,
+    NS_PREFIX_56,
+    NS_PREFIX_64,
+    NS_PREFIX_96};
+
+static const __uint8_t V6_PREFIX_SIZE_TABLE[7] = {
+    sizeof(WK_PREFIX_96)/sizeof(__uint8_t),
+    sizeof(NS_PREFIX_32)/sizeof(__uint8_t),
+    sizeof(NS_PREFIX_40)/sizeof(__uint8_t),
+    sizeof(NS_PREFIX_48)/sizeof(__uint8_t),
+    sizeof(NS_PREFIX_56)/sizeof(__uint8_t),
+    sizeof(NS_PREFIX_64)/sizeof(__uint8_t),
+    sizeof(NS_PREFIX_96)/sizeof(__uint8_t)};
+
+static const __uint8_t V6_PREFIX_TABLE_SIZE = 7;
+
+typedef enum {
+    IPv6PrefixUnResolved = 0,
+    IPv6PrefixResolving,
+    IPv6PrefixResolved
+} IPv6PrefixResolveStatus;
+
+@implementation OSSIPv6PrefixResolver {
+    IPv6PrefixResolveStatus ipv6PrefixResolveStatus;
+    __uint8_t *ipv6Prefix;
+    int prefixLen;
+}
+
+- (instancetype)init {
+    if (self = [super init]) {
+        ipv6PrefixResolveStatus = IPv6PrefixUnResolved;
+        ipv6Prefix = (__uint8_t *)V6_PREFIX_CONTENT_TABLE[0];
+        prefixLen = V6_PREFIX_SIZE_TABLE[0];
+    }
+    return self;
+}
+
++ (instancetype)getInstance {
+    static id singletonInstance = nil;
+    static dispatch_once_t once_token;
+    dispatch_once(&once_token, ^{
+        if (!singletonInstance) {
+            singletonInstance = [[super allocWithZone:NULL] init];
+        }
+    });
+    return singletonInstance;
+}
+
+/**
+ *	@brief	Updates IPv6 Prefix
+ */
+- (void)updateIPv6Prefix {
+    @synchronized(self) {
+        ipv6PrefixResolveStatus = IPv6PrefixUnResolved;
+        [self resolveIPv6Prefix:ipv6Prefix];
+    }
+}
+
+- (BOOL)isIPv6Prefix:(__uint8_t *)v6Prefix
+       withPrefixLen:(int)pLen
+              withIP:(__uint8_t *)ip
+           withIPLen:(int)ipLen {
+    for (int i = 0; i < pLen && i < ipLen; i++) {
+        if (*(v6Prefix + i) != *(ip + i)) {
+            return NO;
+        }
+    }
+    return YES;
+}
+
+- (__uint8_t)resolveIPv6Prefix:(__uint8_t *)prefix {
+    if ( !prefix ) {
+        return 0;
+    }
+    __uint8_t len = prefixLen;
+    memcpy(prefix, ipv6Prefix, prefixLen);
+    @synchronized(self) {
+        if (ipv6PrefixResolveStatus==IPv6PrefixUnResolved ) {
+            ipv6PrefixResolveStatus = IPv6PrefixResolving;
+            dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
+                struct addrinfo hints, *addr;
+                memset(&hints, 0, sizeof(hints));
+                hints.ai_family = PF_INET6;
+                hints.ai_socktype = SOCK_STREAM;
+                hints.ai_flags = AI_DEFAULT;
+                
+                if (0 != getaddrinfo("ipv4only.arpa", "http", &hints, &addr)) {
+                    ipv6PrefixResolveStatus = IPv6PrefixUnResolved;
+                    return;
+                }
+                
+                if (addr && AF_INET6 == addr->ai_addr->sa_family) {
+                    struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *)(addr->ai_addr);
+                    if ( !addr6 ) {
+                        ipv6PrefixResolveStatus = IPv6PrefixUnResolved;
+                        return;
+                    }
+                    
+                    __uint8_t* u8 = addr6->sin6_addr.__u6_addr.__u6_addr8;
+                    for (__uint8_t i=0; i < V6_PREFIX_TABLE_SIZE; i++) {
+                        if ([self isIPv6Prefix:(__uint8_t *)V6_PREFIX_CONTENT_TABLE[i]
+                                 withPrefixLen:V6_PREFIX_SIZE_TABLE[i]
+                                        withIP:u8
+                                     withIPLen:16]) {
+                            
+                            ipv6Prefix = (__uint8_t *)V6_PREFIX_CONTENT_TABLE[i];
+                            prefixLen = V6_PREFIX_SIZE_TABLE[i];
+                            ipv6PrefixResolveStatus = IPv6PrefixResolved;
+                            break;
+                        }
+                    }
+                    ipv6PrefixResolveStatus = IPv6PrefixUnResolved;
+                }
+                
+            });
+        }
+    }
+    
+    return len;
+}
+
+- (NSString *)convertIPv4toIPv6:(NSString *)ipv4 {
+    if ([ipv4 length] <= 0) {
+        return nil;
+    }
+    
+    __uint8_t ipv6[16] = {0x00};
+    __uint8_t length = [self resolveIPv6Prefix:ipv6];
+    
+    if (length <= 0) {
+        return nil;
+    }
+    
+    in_addr_t addr_v4 = inet_addr([ipv4 UTF8String]);
+    
+    // 按length的不同情况进行处理
+    if (length==4 || length==12) { //32 bits or 96 bits
+        ipv6[length+0] |= (__uint8_t)(addr_v4>>0 & 0xff);
+        ipv6[length+1] |= (__uint8_t)(addr_v4>>8 & 0xff);
+        ipv6[length+2] |= (__uint8_t)(addr_v4>>16 & 0xff);
+        ipv6[length+3] |= (__uint8_t)(addr_v4>>24 & 0xff);
+    }
+    else if (length == 5) { //40 bits  :a.b.c.0.d
+        ipv6[length+0] |= (__uint8_t)(addr_v4>>0 & 0xff);
+        ipv6[length+1] |= (__uint8_t)(addr_v4>>8 & 0xff);
+        ipv6[length+2] |= (__uint8_t)(addr_v4>>16 & 0xff);
+        ipv6[length+4] |= (__uint8_t)(addr_v4>>24 & 0xff);
+    }
+    else if (length == 6) { //48 bits   :a.b.0.c.d
+        ipv6[length+0] |= (__uint8_t)(addr_v4>>0 & 0xff);
+        ipv6[length+1] |= (__uint8_t)(addr_v4>>8 & 0xff);
+        ipv6[length+3] |= (__uint8_t)(addr_v4>>16 & 0xff);
+        ipv6[length+4] |= (__uint8_t)(addr_v4>>24 & 0xff);
+    }
+    else if (length == 7) { //56 bits   :a.0.b.c.d
+        ipv6[length+0] |= (__uint8_t)(addr_v4>>0 & 0xff);
+        ipv6[length+2] |= (__uint8_t)(addr_v4>>8 & 0xff);
+        ipv6[length+3] |= (__uint8_t)(addr_v4>>16 & 0xff);
+        ipv6[length+4] |= (__uint8_t)(addr_v4>>24 & 0xff);
+    }
+    else if (length == 8) { //64 bits   :0.a.b.c.d
+        ipv6[length+1] |= (__uint8_t)(addr_v4>>0 & 0xff);
+        ipv6[length+2] |= (__uint8_t)(addr_v4>>8 & 0xff);
+        ipv6[length+3] |= (__uint8_t)(addr_v4>>16 & 0xff);
+        ipv6[length+4] |= (__uint8_t)(addr_v4>>24 & 0xff);
+    }
+    
+    // constructs the IPv6 structure
+    char addr_text[ MAX(INET_ADDRSTRLEN, INET6_ADDRSTRLEN) ];
+    if(inet_ntop(AF_INET6, ipv6, addr_text, INET6_ADDRSTRLEN)) {
+        NSString *ret = [NSString stringWithUTF8String:addr_text];
+        return ret;
+    }
+    return nil;
+}
+
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSInputStreamHelper.h

@@ -0,0 +1,22 @@
+//
+//  OSSInputStreamHelper.h
+//  AliyunOSSSDK
+//
+//  Created by 怀叙 on 2017/12/7.
+//  Copyright © 2017年 阿里云. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+@interface OSSInputStreamHelper : NSObject
+
+@property (nonatomic, assign) uint64_t crc64;
+
+- (instancetype)initWithFileAtPath:(nonnull NSString *)path;
+- (instancetype)initWithURL:(nonnull NSURL *)URL;
+
+- (void)syncReadBuffers;
+
+@end
+NS_ASSUME_NONNULL_END

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSInputStreamHelper.m

@@ -0,0 +1,80 @@
+//
+//  OSSInputStreamHelper.m
+//  AliyunOSSSDK
+//
+//  Created by 怀叙 on 2017/12/7.
+//  Copyright © 2017年 阿里云. All rights reserved.
+//
+
+#import "OSSInputStreamHelper.h"
+#import "OSSLog.h"
+#import "aos_crc64.h"
+
+@interface OSSInputStreamHelper ()
+{
+    NSInputStream *_inputStream;
+    CFAbsoluteTime _startTime;
+    dispatch_semaphore_t _semaphore;
+}
+
+@end
+
+@implementation OSSInputStreamHelper
+
+- (instancetype)initWithFileAtPath:(nonnull NSString *)path
+{
+    self = [super init];
+    if (self) {
+        _crc64 = 0;
+        _inputStream = [NSInputStream inputStreamWithFileAtPath:path];
+        _semaphore = dispatch_semaphore_create(1);
+    }
+    return self;
+}
+
+- (instancetype)initWithURL:(nonnull NSURL *)URL
+{
+    self = [super init];
+    if (self) {
+        _crc64 = 0;
+        _inputStream = [NSInputStream inputStreamWithURL:URL];
+        _semaphore = dispatch_semaphore_create(1);
+    }
+    return self;
+}
+
+- (void)syncReadBuffers
+{
+    dispatch_semaphore_wait(_semaphore, DISPATCH_TIME_FOREVER);
+
+    _startTime = CFAbsoluteTimeGetCurrent();
+    [_inputStream open];
+    NSInteger length = 1;
+    while (length > 0)
+    {
+        @autoreleasepool{
+            uint8_t streamData[1024 * 4];
+            length = [_inputStream read:streamData maxLength:1024 * 4];
+            if (length > 0) {
+                _crc64 = aos_crc64(_crc64, streamData, length);
+            }
+        }
+    }
+    
+    if (length < 0) {
+        OSSLogError(@"there is an error when reading buffer from file!");
+    }
+    [_inputStream close];
+    
+    CFAbsoluteTime duration =  CFAbsoluteTimeGetCurrent() - _startTime;
+    OSSLogDebug(@"read file cost time is :%f",duration);
+    
+    dispatch_semaphore_signal(_semaphore);
+}
+
+- (uint64_t)crc64
+{
+    return _crc64;
+}
+
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSLog.h

@@ -0,0 +1,54 @@
+//
+//  OSSLog.h
+//  oss_ios_sdk
+//
+//  Created by zhouzhuo on 8/16/15.
+//  Copyright (c) 2015 aliyun.com. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+#import "OSSCocoaLumberjack.h"
+static const OSSDDLogLevel ossLogLevel = OSSDDLogLevelAll;
+
+// colorful log configuration
+// see https://github.com/robbiehanson/XcodeColors
+
+#define XCODE_COLORS_ESCAPE @"\033["
+
+#define XCODE_COLORS_RESET_FG  XCODE_COLORS_ESCAPE @"fg;" // Clear any foreground color
+#define XCODE_COLORS_RESET_BG  XCODE_COLORS_ESCAPE @"bg;" // Clear any background color
+#define XCODE_COLORS_RESET     XCODE_COLORS_ESCAPE @";"   // Clear any foreground or background color
+
+#define OSSLogVerbose(frmt, ...)\
+if ([OSSLog isLogEnable]) {\
+OSSDDLogVerbose(@"[Verbose]: %@", [NSString stringWithFormat:(frmt), ##__VA_ARGS__]);\
+}
+
+#define OSSLogDebug(frmt, ...)\
+if ([OSSLog isLogEnable]) {\
+OSSDDLogDebug(@"[Debug]: %@", [NSString stringWithFormat:(frmt), ##__VA_ARGS__]);\
+}
+
+#define OSSLogDebugNoFile(frmt, ...)\
+if ([OSSLog isLogEnable]) {\
+NSLog(@"[Debug]: %@", [NSString stringWithFormat:(frmt), ##__VA_ARGS__]);\
+}
+
+#define OSSLogError(frmt, ...)\
+if ([OSSLog isLogEnable]) {\
+OSSDDLogError(@"[Error]: %@", [NSString stringWithFormat:(frmt), ##__VA_ARGS__]);\
+}
+
+#define OSSLogWarn(frmt, ...)\
+if ([OSSLog isLogEnable]) {\
+OSSDDLogWarn(@"[Warning]: %@", [NSString stringWithFormat:(frmt), ##__VA_ARGS__]);\
+}
+
+static BOOL isEnable;
+
+@interface OSSLog : NSObject
+
++ (void)enableLog;
++ (void)disableLog;
++ (BOOL)isLogEnable;
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSLog.m

@@ -0,0 +1,31 @@
+//
+//  OSSLog.m
+//  oss_ios_sdk
+//
+//  Created by zhouzhuo on 8/16/15.
+//  Copyright (c) 2015 aliyun.com. All rights reserved.
+//
+
+#import "OSSLog.h"
+#import "OSSUtil.h"
+
+@implementation OSSLog
++ (void)enableLog {
+    if([OSSUtil hasPhoneFreeSpace]){
+        isEnable = YES;
+        [OSSDDLog removeAllLoggers];
+        [OSSDDLog addLogger:[OSSNSLogger sharedInstance]];
+        OSSDDFileLogger *fileLogger = [[OSSDDFileLogger alloc] init];
+        [OSSDDLog addLogger:fileLogger];
+    }
+}
+
++ (void)disableLog {
+    isEnable = NO;
+}
+
++ (BOOL)isLogEnable {
+    return isEnable;
+}
+
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSModel.m

@@ -0,0 +1,805 @@
+//
+//  OSSModel.m
+//  oss_ios_sdk
+//
+//  Created by zhouzhuo on 8/16/15.
+//  Copyright (c) 2015 aliyun.com. All rights reserved.
+//
+#import "OSSDefine.h"
+#import "OSSModel.h"
+#import "OSSBolts.h"
+#import "OSSUtil.h"
+#import "OSSNetworking.h"
+#import "OSSLog.h"
+#import "OSSXMLDictionary.h"
+#import "OSSSignerParams.h"
+#import "OSSSignerBase.h"
+#if TARGET_OS_IOS
+#import <UIKit/UIDevice.h>
+#import <UIKit/UIApplication.h>
+#endif
+
+#import "OSSAllRequestNeededMessage.h"
+#import "OSSNetworkingRequestDelegate.h"
+
+@implementation NSDictionary (OSS)
+
+- (NSString *)base64JsonString {
+    NSError * error;
+    NSData * jsonData = [NSJSONSerialization dataWithJSONObject:self
+                                                        options:0
+                                                          error:&error];
+
+    if (!jsonData) {
+        return @"e30="; // base64("{}");
+    } else {
+        NSString * jsonStr = [[[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding] stringByReplacingOccurrencesOfString:@"\\/" withString:@"/"];
+        NSLog(@"callback json - %@", jsonStr);
+        return [[jsonStr dataUsingEncoding:NSUTF8StringEncoding] base64EncodedStringWithOptions:0];
+    }
+}
+
+@end
+
+@implementation OSSSyncMutableDictionary
+
+- (instancetype)init {
+    if (self = [super init]) {
+        _dictionary = [NSMutableDictionary dictionary];
+        _dispatchQueue = dispatch_queue_create("com.aliyun.aliyunsycmutabledictionary", DISPATCH_QUEUE_SERIAL);
+    }
+
+    return self;
+}
+
+- (void)dealloc {
+    [[NSNotificationCenter defaultCenter] removeObserver:self];
+}
+
+- (void)addObserverForResetCurrentRetryCount {
+#if TARGET_OS_IOS
+    NSString *notificationName = UIApplicationWillEnterForegroundNotification;
+    // When App switches to active status, refresh the IPv6-only check.
+    NSNotificationCenter *defaultCenter = [NSNotificationCenter defaultCenter];
+    [defaultCenter addObserver:self
+                      selector:@selector(appWillEnterForeground)
+                          name:notificationName
+                        object:nil];
+#endif
+}
+
+- (NSArray *)allKeys {
+    __block NSArray *allKeys = nil;
+    dispatch_sync(self.dispatchQueue, ^{
+        allKeys = [self.dictionary allKeys];
+    });
+    return allKeys;
+}
+
+- (id)objectForKey:(id)aKey {
+    __block id returnObject = nil;
+
+    dispatch_sync(self.dispatchQueue, ^{
+        returnObject = [self.dictionary objectForKey:aKey];
+    });
+
+    return returnObject;
+}
+
+- (void)setObject:(id)anObject forKey:(id <NSCopying>)aKey {
+    dispatch_sync(self.dispatchQueue, ^{
+        [self.dictionary oss_setObject:anObject forKey:aKey];
+    });
+}
+
+- (void)removeObjectForKey:(id)aKey {
+    dispatch_sync(self.dispatchQueue, ^{
+        [self.dictionary removeObjectForKey:aKey];
+    });
+}
+
+- (void)appWillEnterForeground {
+    dispatch_sync(self.dispatchQueue, ^{
+        for (NSString *key in self.dictionary.allKeys) {
+            OSSNetworkingRequestDelegate *delegate = self.dictionary[key];
+            delegate.currentRetryCount = 0;
+        }
+    });
+}
+
+@end
+
+@implementation OSSFederationToken
+
+- (NSString *)description
+{
+    return [NSString stringWithFormat:@"OSSFederationToken<%p>:{AccessKeyId: %@\nAccessKeySecret: %@\nSecurityToken: %@\nExpiration: %@}", self, _tAccessKey, _tSecretKey, _tToken, _expirationTimeInGMTFormat];
+}
+
+- (BOOL)useSecurityToken {
+    return self.tToken != nil;
+}
+
+@end
+
+@implementation OSSPlainTextAKSKPairCredentialProvider
+
+- (instancetype)initWithPlainTextAccessKey:(nonnull NSString *)accessKey secretKey:(nonnull NSString *)secretKey {
+    if (self = [super init]) {
+        self.accessKey = [accessKey oss_trim];
+        self.secretKey = [secretKey oss_trim];
+    }
+    return self;
+}
+
+- (nullable NSString *)sign:(NSString *)content error:(NSError **)error {
+    if (![self.accessKey oss_isNotEmpty] || ![self.secretKey oss_isNotEmpty])
+    {
+        if (error != nil)
+        {
+            *error = [NSError errorWithDomain:OSSClientErrorDomain
+                                         code:OSSClientErrorCodeSignFailed
+                                     userInfo:@{OSSErrorMessageTOKEN: @"accessKey or secretKey can't be null"}];
+        }
+        
+        return nil;
+    }
+    NSString * sign = [OSSUtil calBase64Sha1WithData:content withSecret:self.secretKey];
+    return [NSString stringWithFormat:@"OSS %@:%@", self.accessKey, sign];
+}
+
+@end
+
+@implementation OSSCustomSignerCredentialProvider
+
+- (instancetype)initWithImplementedSigner:(OSSCustomSignContentBlock)signContent
+{
+    NSParameterAssert(signContent);
+    if (self = [super init])
+    {
+        _signContent = signContent;
+    }
+    return self;
+}
+
+- (NSString *)sign:(NSString *)content error:(NSError **)error
+{
+    NSString * signature = @"";
+    @synchronized(self) {
+        signature = self.signContent(content, error);
+    }
+    if (*error) {
+        *error = [NSError errorWithDomain:OSSClientErrorDomain
+                                     code:OSSClientErrorCodeSignFailed
+                                 userInfo:[[NSDictionary alloc] initWithDictionary:[*error userInfo]]];
+        return nil;
+    }
+    return signature;
+}
+
+@end
+
+@implementation OSSFederationCredentialProvider
+
+- (instancetype)initWithFederationTokenGetter:(OSSGetFederationTokenBlock)federationTokenGetter {
+    if (self = [super init]) {
+        self.federationTokenGetter = federationTokenGetter;
+    }
+    return self;
+}
+
+- (nullable OSSFederationToken *)getToken:(NSError **)error {
+    OSSFederationToken * validToken = nil;
+    @synchronized(self) {
+        if (self.cachedToken == nil) {
+
+            self.cachedToken = self.federationTokenGetter();
+        } else {
+            if (self.cachedToken.expirationTimeInGMTFormat) {
+                NSDateFormatter * fm = [NSDateFormatter new];
+                fm.locale = [NSLocale localeWithLocaleIdentifier:@"en_US_POSIX"];
+                [fm setDateFormat:@"yyyy-MM-dd'T'HH:mm:ssZ"];
+                self.cachedToken.expirationTimeInMilliSecond = [[fm dateFromString:self.cachedToken.expirationTimeInGMTFormat] timeIntervalSince1970] * 1000;
+                self.cachedToken.expirationTimeInGMTFormat = nil;
+                OSSLogVerbose(@"Transform GMT date to expirationTimeInMilliSecond: %lld", self.cachedToken.expirationTimeInMilliSecond);
+            }
+
+            NSDate * expirationDate = [NSDate dateWithTimeIntervalSince1970:(NSTimeInterval)(self.cachedToken.expirationTimeInMilliSecond / 1000)];
+            NSTimeInterval interval = [expirationDate timeIntervalSinceDate:[NSDate oss_clockSkewFixedDate]];
+            /* if this token will be expired after less than 5 min, we abort it in case of when request arrived oss server,
+               it's expired already. */
+            if (interval < 5 * 60) {
+                OSSLogDebug(@"get federation token, but after %lf second it would be expired", interval);
+                self.cachedToken = self.federationTokenGetter();
+            }
+        }
+
+        validToken = self.cachedToken;
+    }
+    if (!validToken)
+    {
+        if (error != nil)
+        {
+            *error = [NSError errorWithDomain:OSSClientErrorDomain
+                                         code:OSSClientErrorCodeSignFailed
+                                     userInfo:@{OSSErrorMessageTOKEN: @"Can't get a federation token"}];
+        }
+        
+        return nil;
+    }
+    return validToken;
+}
+
+@end
+
+@implementation OSSStsTokenCredentialProvider
+
+- (OSSFederationToken *)getToken {
+    OSSFederationToken * token = [OSSFederationToken new];
+    token.tAccessKey = self.accessKeyId;
+    token.tSecretKey = self.secretKeyId;
+    token.tToken = self.securityToken;
+    token.expirationTimeInMilliSecond = NSIntegerMax;
+    return token;
+}
+
+- (instancetype)initWithAccessKeyId:(NSString *)accessKeyId secretKeyId:(NSString *)secretKeyId securityToken:(NSString *)securityToken {
+    if (self = [super init]) {
+        self.accessKeyId = [accessKeyId oss_trim];
+        self.secretKeyId = [secretKeyId oss_trim];
+        self.securityToken = [securityToken oss_trim];
+    }
+    return self;
+}
+
+- (NSString *)sign:(NSString *)content error:(NSError **)error {
+    NSString * sign = [OSSUtil calBase64Sha1WithData:content withSecret:self.secretKeyId];
+    return [NSString stringWithFormat:@"OSS %@:%@", self.accessKeyId, sign];
+}
+
+@end
+
+@implementation OSSAuthCredentialProvider
+
+- (instancetype)initWithAuthServerUrl:(NSString *)authServerUrl
+{
+    return [self initWithAuthServerUrl:authServerUrl responseDecoder:nil];
+}
+
+- (instancetype)initWithAuthServerUrl:(NSString *)authServerUrl responseDecoder:(nullable OSSResponseDecoderBlock)decoder
+{
+    self = [super initWithFederationTokenGetter:^OSSFederationToken * {
+        NSURL * url = [NSURL URLWithString:self.authServerUrl];
+        NSURLRequest * request = [NSURLRequest requestWithURL:url];
+        OSSTaskCompletionSource * tcs = [OSSTaskCompletionSource taskCompletionSource];
+        NSURLSession * session = [NSURLSession sharedSession];
+        NSURLSessionTask * sessionTask = [session dataTaskWithRequest:request
+                                                    completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
+                                                        if (error) {
+                                                            [tcs setError:error];
+                                                            return;
+                                                        }
+                                                        [tcs setResult:data];
+                                                    }];
+        [sessionTask resume];
+        [tcs.task waitUntilFinished];
+        if (tcs.task.error) {
+            return nil;
+        } else {
+            NSData* data = tcs.task.result;
+            if(decoder){
+                data = decoder(data);
+            }
+            NSDictionary * object = [NSJSONSerialization JSONObjectWithData:data
+                                                                    options:kNilOptions
+                                                                      error:nil];
+            int statusCode = [[object objectForKey:@"StatusCode"] intValue];
+            if (statusCode == 200) {
+                OSSFederationToken * token = [OSSFederationToken new];
+                // All the entries below are mandatory.
+                token.tAccessKey = [object objectForKey:@"AccessKeyId"];
+                token.tSecretKey = [object objectForKey:@"AccessKeySecret"];
+                token.tToken = [object objectForKey:@"SecurityToken"];
+                token.expirationTimeInGMTFormat = [object objectForKey:@"Expiration"];
+                OSSLogDebug(@"token: %@ %@ %@ %@", token.tAccessKey, token.tSecretKey, token.tToken, [object objectForKey:@"Expiration"]);
+                return token;
+            }else{
+                return nil;
+            }
+            
+        }
+    }];
+    if(self){
+        self.authServerUrl = authServerUrl;
+    }
+    return self;
+}
+
+@end
+
+NSString * const BACKGROUND_SESSION_IDENTIFIER = @"com.aliyun.oss.backgroundsession";
+
+@implementation OSSClientConfiguration
+
+- (instancetype)init {
+    if (self = [super init]) {
+        self.maxRetryCount = OSSDefaultRetryCount;
+        self.maxConcurrentRequestCount = OSSDefaultMaxConcurrentNum;
+        self.enableBackgroundTransmitService = NO;
+        self.isHttpdnsEnable = NO;
+        self.backgroundSesseionIdentifier = BACKGROUND_SESSION_IDENTIFIER;
+        self.timeoutIntervalForRequest = OSSDefaultTimeoutForRequestInSecond;
+        self.timeoutIntervalForResource = OSSDefaultTimeoutForResourceInSecond;
+        self.isPathStyleAccessEnable = NO;
+        self.isCustomPathPrefixEnable = NO;
+        self.cnameExcludeList = @[];
+        self.isAllowUACarrySystemInfo = YES;
+        self.isFollowRedirectsEnable = YES;
+        // When the value <= 0, do not set HTTPMaximumConnectionsPerHost and use the default value of NSURLSessionConfiguration
+        self.HTTPMaximumConnectionsPerHost = 0;
+        self.isAllowResetRetryCount = NO;
+        self.isAllowNetworkMetricInfo = NO;
+        self.signVersion = OSSSignVersionV1;
+    }
+    return self;
+}
+
+- (void)setCnameExcludeList:(NSArray *)cnameExcludeList {
+    NSMutableArray * array = [NSMutableArray new];
+    [cnameExcludeList enumerateObjectsUsingBlock:^(id  _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) {
+        NSString * host = [(NSString *)obj lowercaseString];
+        if ([host containsString:@"://"]) {
+            NSString * trimHost = [host substringFromIndex:[host rangeOfString:@"://"].location + 3];
+            [array addObject:trimHost];
+        } else {
+            [array addObject:host];
+        }
+    }];
+    _cnameExcludeList = array.copy;
+}
+
+@end
+
+@implementation OSSSignerInterceptor
+
+- (instancetype)initWithCredentialProvider:(id<OSSCredentialProvider>)credentialProvider {
+    if (self = [super init]) {
+        self.credentialProvider = credentialProvider;
+    }
+    return self;
+}
+
+- (OSSTask *)interceptRequestMessage:(OSSAllRequestNeededMessage *)requestMessage {
+    OSSLogVerbose(@"signing intercepting - ");
+    NSString *resource = @"/";
+    if (requestMessage.bucketName) {
+        resource = [NSString stringWithFormat:@"/%@/", requestMessage.bucketName];
+    }
+    if (requestMessage.objectKey) {
+        resource = [resource oss_stringByAppendingPathComponentForURL:requestMessage.objectKey];
+    }
+    OSSSignerParams *signerParams = [[OSSSignerParams alloc] init];
+    signerParams.region = self.region;
+    signerParams.cloudBoxId = self.cloudBoxId;
+    signerParams.resourcePath = resource;
+    signerParams.credentialProvider = self.credentialProvider;
+    
+    id<OSSRequestSigner> requestSigner = [OSSSignerBase createRequestSignerWithSignerVersion:self.version
+                                                                                signerParams:signerParams];
+    
+    return [requestSigner sign:requestMessage];
+}
+
+@end
+
+@implementation OSSUASettingInterceptor
+
+- (instancetype)initWithClientConfiguration:(OSSClientConfiguration *)clientConfiguration{
+    if (self = [super init]) {
+        self.clientConfiguration = clientConfiguration;
+    }
+    return self;
+}
+
+- (OSSTask *)interceptRequestMessage:(OSSAllRequestNeededMessage *)request {
+    NSString * userAgent = [self getUserAgent:self.clientConfiguration.userAgentMark];
+    [request.headerParams oss_setObject:userAgent forKey:@"User-Agent"];
+    return [OSSTask taskWithResult:nil];
+}
+
+
+- (NSString *)getUserAgent:(NSString *)customUserAgent {
+    static NSString * userAgent = nil;
+    static dispatch_once_t once;
+    NSString * tempUserAgent = nil;
+    dispatch_once(&once, ^{
+        NSString *localeIdentifier = [[NSLocale currentLocale] localeIdentifier];
+#if TARGET_OS_IOS
+        if (self.clientConfiguration.isAllowUACarrySystemInfo) {
+            NSString *systemName = [[[UIDevice currentDevice] systemName] stringByReplacingOccurrencesOfString:@" " withString:@"-"];
+            NSString *systemVersion = [[UIDevice currentDevice] systemVersion];
+            userAgent = [NSString stringWithFormat:@"%@/%@(/%@/%@/%@)", OSSUAPrefix, OSSSDKVersion, systemName, systemVersion, localeIdentifier];
+        } else {
+            userAgent = [NSString stringWithFormat:@"%@/%@(/%@)", OSSUAPrefix, OSSSDKVersion, localeIdentifier];
+        }
+#elif TARGET_OS_OSX
+        userAgent = [NSString stringWithFormat:@"%@/%@(/%@/%@/%@)", OSSUAPrefix, OSSSDKVersion, @"OSX", [NSProcessInfo processInfo].operatingSystemVersionString, localeIdentifier];
+#endif
+    });
+    if(customUserAgent){
+        if(userAgent){
+            tempUserAgent = [[userAgent stringByAppendingString:@"/"] stringByAppendingString:customUserAgent];
+        }else{
+            tempUserAgent = customUserAgent;
+        }
+    }else{
+        tempUserAgent = userAgent;
+    }
+    return tempUserAgent;
+}
+
+@end
+
+@implementation OSSTimeSkewedFixingInterceptor
+
+- (OSSTask *)interceptRequestMessage:(OSSAllRequestNeededMessage *)request {
+    request.date = [[NSDate oss_clockSkewFixedDate] oss_asStringValue];
+    return [OSSTask taskWithResult:nil];
+}
+
+@end
+
+@implementation OSSRange
+
+- (instancetype)initWithStart:(int64_t)start withEnd:(int64_t)end {
+    if (self = [super init]) {
+        self.startPosition = start;
+        self.endPosition = end;
+    }
+    return self;
+}
+
+- (NSString *)toHeaderString {
+
+    NSString * rangeString = nil;
+
+    if (self.startPosition < 0 && self.endPosition < 0) {
+        rangeString = [NSString stringWithFormat:@"bytes=%lld-%lld", self.startPosition, self.endPosition];
+    } else if (self.startPosition < 0) {
+        rangeString = [NSString stringWithFormat:@"bytes=-%lld", self.endPosition];
+    } else if (self.endPosition < 0) {
+        rangeString = [NSString stringWithFormat:@"bytes=%lld-", self.startPosition];
+    } else {
+        rangeString = [NSString stringWithFormat:@"bytes=%lld-%lld", self.startPosition, self.endPosition];
+    }
+
+    return rangeString;
+}
+
+@end
+
+#pragma mark request and result objects
+
+@implementation OSSGetServiceRequest
+
+- (NSDictionary *)requestParams {
+    NSMutableDictionary * params = [NSMutableDictionary dictionary];
+    [params oss_setObject:self.prefix forKey:@"prefix"];
+    [params oss_setObject:self.marker forKey:@"marker"];
+    if (self.maxKeys > 0) {
+        [params oss_setObject:[@(self.maxKeys) stringValue] forKey:@"max-keys"];
+    }
+    return [params copy];
+}
+
+@end
+
+@implementation OSSGetServiceResult
+@end
+
+@implementation OSSCreateBucketRequest
+
+- (instancetype)init
+{
+    self = [super init];
+    if (self) {
+        _storageClass = OSSBucketStorageClassStandard;
+    }
+    return self;
+}
+
+- (NSString *)storageClassAsString {
+    NSString *storageClassString = nil;
+    switch (_storageClass) {
+        case OSSBucketStorageClassStandard:
+            storageClassString = @"Standard";
+            break;
+        case OSSBucketStorageClassIA:
+            storageClassString = @"IA";
+            break;
+        case OSSBucketStorageClassArchive:
+            storageClassString = @"Archive";
+            break;
+        default:
+            storageClassString = @"Unknown";
+            break;
+    }
+    return storageClassString;
+}
+
+@end
+
+@implementation OSSCreateBucketResult
+@end
+
+@implementation OSSDeleteBucketRequest
+@end
+
+@implementation OSSDeleteBucketResult
+@end
+
+@implementation OSSGetBucketRequest
+
+- (NSDictionary *)requestParams {
+    NSMutableDictionary * params = [NSMutableDictionary dictionary];
+    [params oss_setObject:self.delimiter forKey:@"delimiter"];
+    [params oss_setObject:self.prefix forKey:@"prefix"];
+    [params oss_setObject:self.marker forKey:@"marker"];
+    if (self.maxKeys > 0) {
+        [params oss_setObject:[@(self.maxKeys) stringValue] forKey:@"max-keys"];
+    }
+    return [params copy];
+}
+
+@end
+
+@implementation OSSListMultipartUploadsRequest
+- (NSDictionary *)requestParams {
+    NSMutableDictionary * params = [NSMutableDictionary dictionary];
+    [params oss_setObject:self.delimiter forKey:@"delimiter"];
+    [params oss_setObject:self.prefix forKey:@"prefix"];
+    [params oss_setObject:self.keyMarker forKey:@"key-marker"];
+    [params oss_setObject:self.uploadIdMarker forKey:@"upload-id-marker"];
+    [params oss_setObject:self.encodingType forKey:@"encoding-type"];
+    
+    if (self.maxUploads > 0) {
+        [params oss_setObject:[@(self.maxUploads) stringValue] forKey:@"max-uploads"];
+    }
+    
+    return [params copy];
+}
+@end
+
+@implementation OSSListMultipartUploadsResult
+@end
+
+@implementation OSSGetBucketResult
+@end
+
+@implementation OSSGetBucketACLRequest
+
+- (NSDictionary *)requestParams {
+    return @{@"acl": @""};
+}
+
+@end
+
+@implementation OSSGetBucketACLResult
+@end
+
+@implementation OSSHeadObjectRequest
+@end
+
+@implementation OSSHeadObjectResult
+@end
+
+@implementation OSSGetObjectRequest
+@end
+
+@implementation OSSGetObjectResult
+@end
+
+@implementation OSSPutObjectACLRequest
+
+- (instancetype)init
+{
+    self = [super init];
+    if (self) {
+        _acl = @"default";
+    }
+    return self;
+}
+
+@end
+
+@implementation OSSPutObjectACLResult
+@end
+
+@implementation OSSPutObjectRequest
+
+- (instancetype)init {
+    if (self = [super init]) {
+        self.objectMeta = [NSDictionary new];
+    }
+    return self;
+}
+
+@end
+
+@implementation OSSPutObjectResult
+@end
+
+@implementation OSSAppendObjectRequest
+
+- (instancetype)init {
+    if (self = [super init]) {
+        self.objectMeta = [NSDictionary new];
+    }
+    return self;
+}
+
+@end
+
+@implementation OSSAppendObjectResult
+@end
+
+@implementation OSSDeleteObjectRequest
+@end
+
+@implementation OSSDeleteObjectResult
+@end
+
+@implementation OSSCopyObjectRequest
+
+- (instancetype)init {
+    if (self = [super init]) {
+        self.objectMeta = [NSDictionary new];
+    }
+    return self;
+}
+
+@end
+
+@implementation OSSCopyObjectResult
+@end
+
+@implementation OSSInitMultipartUploadRequest
+
+- (instancetype)init {
+    if (self = [super init]) {
+        self.objectMeta = [NSDictionary new];
+    }
+    return self;
+}
+
+@end
+
+@implementation OSSInitMultipartUploadResult
+@end
+
+@implementation OSSUploadPartRequest
+@end
+
+@implementation OSSUploadPartResult
+@end
+
+@implementation OSSPartInfo
+
++ (instancetype)partInfoWithPartNum:(int32_t)partNum
+                               eTag:(NSString *)eTag
+                               size:(int64_t)size {
+    return [self partInfoWithPartNum:partNum
+                                eTag:eTag
+                                size:size
+                               crc64:0];
+}
+
++ (instancetype)partInfoWithPartNum:(int32_t)partNum eTag:(NSString *)eTag size:(int64_t)size crc64:(uint64_t)crc64
+{
+    OSSPartInfo *parInfo = [OSSPartInfo new];
+    parInfo.partNum = partNum;
+    parInfo.eTag = eTag;
+    parInfo.size = size;
+    parInfo.crc64 = crc64;
+    return parInfo;
+}
+
+- (nonnull NSDictionary *)entityToDictionary
+{
+    NSMutableDictionary *dict = [NSMutableDictionary dictionary];
+    [dict setValue:@(_partNum) forKey:@"partNum"];
+    if (_eTag)
+    {
+        [dict setValue:_eTag forKey:@"eTag"];
+    }
+    [dict setValue:@(_size) forKey:@"size"];
+    [dict setValue:@(_crc64) forKey:@"crc64"];
+    return [dict copy];
+}
+
+- (NSString *)description
+{
+    return [NSString stringWithFormat:@"OSSPartInfo<%p>:{partNum: %d,eTag: %@,partSize: %lld,crc64: %llu}",self,self.partNum,self.eTag,self.size,self.crc64];
+}
+
+#pragma marks - Protocol Methods
+- (id)copyWithZone:(nullable NSZone *)zone
+{
+    OSSPartInfo *instance = [[[self class] allocWithZone:zone] init];
+    instance.partNum = self.partNum;
+    instance.eTag = self.eTag;
+    instance.size = self.size;
+    instance.crc64 = self.crc64;
+    return instance;
+}
+
+@end
+
+@implementation OSSCompleteMultipartUploadRequest
+@end
+
+@implementation OSSCompleteMultipartUploadResult
+@end
+
+@implementation OSSAbortMultipartUploadRequest
+@end
+
+@implementation OSSAbortMultipartUploadResult
+@end
+
+@implementation OSSListPartsRequest
+@end
+
+@implementation OSSListPartsResult
+@end
+
+@implementation OSSMultipartUploadRequest
+
+- (instancetype)init {
+    if (self = [super init]) {
+        self.partSize = 256 * 1024;
+        self.threadNum = OSSDefaultThreadNum;
+        self.terminationMode = OSSTerminationModeAll;
+    }
+    return self;
+}
+
+- (void)cancel {
+    [super cancel];
+}
+
+@end
+
+@implementation OSSResumableUploadRequest
+
+- (instancetype)init {
+    if (self = [super init]) {
+        self.deleteUploadIdOnCancelling = YES;
+        self.partSize = 256 * 1024;
+    }
+    return self;
+}
+
+- (void)cancel {
+    [super cancel];
+    if(_runningChildrenRequest){
+        [_runningChildrenRequest cancel];
+    }
+}
+
+@end
+
+@implementation OSSResumableUploadResult
+@end
+
+@implementation OSSCallBackRequest
+@end
+
+@implementation OSSCallBackResult
+@end
+
+@implementation OSSImagePersistRequest
+@end
+
+@implementation OSSImagePersistResult
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSNetworking.h

@@ -0,0 +1,49 @@
+//
+//  OSSNetworking.h
+//  oss_ios_sdk
+//
+//  Created by zhouzhuo on 8/16/15.
+//  Copyright (c) 2015 aliyun.com. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+#import "OSSModel.h"
+
+@class OSSSyncMutableDictionary;
+@class OSSNetworkingRequestDelegate;
+@class OSSExecutor;
+
+
+
+/**
+ Network parameters
+ */
+@interface OSSNetworkingConfiguration : NSObject
+@property (nonatomic, assign) uint32_t maxRetryCount;
+@property (nonatomic, assign) uint32_t maxConcurrentRequestCount;
+@property (nonatomic, assign) BOOL enableBackgroundTransmitService;
+@property (nonatomic, strong) NSString * backgroundSessionIdentifier;
+@property (nonatomic, assign) NSTimeInterval timeoutIntervalForRequest;
+@property (nonatomic, assign) NSTimeInterval timeoutIntervalForResource;
+@property (nonatomic, strong) NSString * proxyHost;
+@property (nonatomic, strong) NSNumber * proxyPort;
+@property (nonatomic, assign) BOOL enableFollowRedirects;
+@property (nonatomic, assign) BOOL enableNetworkMetricInfo;
+@property (nonatomic, assign) uint32_t HTTPMaximumConnectionsPerHost;
+@property (nonatomic, assign) BOOL enableResetRetryCount;
+@end
+
+
+/**
+ The network interface which OSSClient uses for network read and write operations.
+ */
+@interface OSSNetworking : NSObject <NSURLSessionDelegate, NSURLSessionDataDelegate>
+@property (nonatomic, strong) NSURLSession * session;
+@property (nonatomic, assign) BOOL isUsingBackgroundSession;
+@property (nonatomic, strong) OSSSyncMutableDictionary * sessionDelagateManager;
+@property (nonatomic, strong) OSSNetworkingConfiguration * configuration;
+@property (nonatomic, strong) OSSExecutor * taskExecutor;
+
+- (instancetype)initWithConfiguration:(OSSNetworkingConfiguration *)configuration;
+- (OSSTask *)sendRequest:(OSSNetworkingRequestDelegate *)request;
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSNetworking.m

@@ -0,0 +1,555 @@
+//
+//  OSSNetworking.m
+//  oss_ios_sdk
+//
+//  Created by zhouzhuo on 8/16/15.
+//  Copyright (c) 2015 aliyun.com. All rights reserved.
+//
+
+#import "OSSDefine.h"
+#import "OSSNetworking.h"
+#import "OSSBolts.h"
+#import "OSSModel.h"
+#import "OSSUtil.h"
+#import "OSSLog.h"
+#import "OSSXMLDictionary.h"
+#import "OSSInputStreamHelper.h"
+#import "OSSNetworkingRequestDelegate.h"
+#import "OSSURLRequestRetryHandler.h"
+#import "OSSHttpResponseParser.h"
+
+@implementation OSSNetworkingConfiguration
+@end
+
+
+@implementation OSSNetworking
+
+- (instancetype)initWithConfiguration:(OSSNetworkingConfiguration *)configuration {
+    if (self = [super init]) {
+        self.configuration = configuration;
+        NSURLSessionConfiguration * conf = nil;
+        NSOperationQueue *delegateQueue = [NSOperationQueue new];
+
+        if (configuration.enableBackgroundTransmitService) {
+            conf = [NSURLSessionConfiguration backgroundSessionConfigurationWithIdentifier:self.configuration.backgroundSessionIdentifier];
+        } else {
+            conf = [NSURLSessionConfiguration defaultSessionConfiguration];
+        }
+        conf.URLCache = nil;
+
+        if (configuration.timeoutIntervalForRequest > 0) {
+            conf.timeoutIntervalForRequest = configuration.timeoutIntervalForRequest;
+        }
+        if (configuration.timeoutIntervalForResource > 0) {
+            conf.timeoutIntervalForResource = configuration.timeoutIntervalForResource;
+        }
+        if (configuration.HTTPMaximumConnectionsPerHost > 0) {
+            conf.HTTPMaximumConnectionsPerHost = configuration.HTTPMaximumConnectionsPerHost;
+        }
+        
+        if (configuration.proxyHost && configuration.proxyPort) {
+            // Create an NSURLSessionConfiguration that uses the proxy
+            NSDictionary *proxyDict = @{
+                                        @"HTTPEnable"  : [NSNumber numberWithInt:1],
+                                        (NSString *)kCFStreamPropertyHTTPProxyHost  : configuration.proxyHost,
+                                        (NSString *)kCFStreamPropertyHTTPProxyPort  : configuration.proxyPort,
+
+                                        @"HTTPSEnable" : [NSNumber numberWithInt:1],
+                                        (NSString *)kCFStreamPropertyHTTPSProxyHost : configuration.proxyHost,
+                                        (NSString *)kCFStreamPropertyHTTPSProxyPort : configuration.proxyPort,
+                                        };
+            conf.connectionProxyDictionary = proxyDict;
+        }
+
+        _session = [NSURLSession sessionWithConfiguration:conf
+                                                 delegate:self
+                                            delegateQueue:delegateQueue];
+
+        self.isUsingBackgroundSession = configuration.enableBackgroundTransmitService;
+        _sessionDelagateManager = [OSSSyncMutableDictionary new];
+        if (configuration.enableResetRetryCount) {
+            [_sessionDelagateManager addObserverForResetCurrentRetryCount];
+        }
+
+        NSOperationQueue * operationQueue = [NSOperationQueue new];
+        if (configuration.maxConcurrentRequestCount > 0) {
+            operationQueue.maxConcurrentOperationCount = configuration.maxConcurrentRequestCount;
+        }
+        self.taskExecutor = [OSSExecutor executorWithOperationQueue: operationQueue];
+    }
+    return self;
+}
+
+- (OSSTask *)sendRequest:(OSSNetworkingRequestDelegate *)request {
+    OSSLogVerbose(@"send request --------");
+    if (self.configuration.proxyHost && self.configuration.proxyPort) {
+        request.isAccessViaProxy = YES;
+    }
+
+    /* set maximum retry */
+    request.retryHandler.maxRetryCount = self.configuration.maxRetryCount;
+
+    OSSTaskCompletionSource * taskCompletionSource = [OSSTaskCompletionSource taskCompletionSource];
+
+    __weak OSSNetworkingRequestDelegate *weakRequest= request;
+    request.completionHandler = ^(id responseObject, NSError * error) {
+        [weakRequest reset];
+        
+        // 1.判断是否出错，如果出错的话，直接设置错误信息
+        if (error)
+        {
+            if (weakRequest.metrics) {
+                NSMutableDictionary *userInfo = error.userInfo ? [NSMutableDictionary dictionaryWithDictionary:error.userInfo] : [NSMutableDictionary dictionary];
+                [userInfo oss_setObject:weakRequest.metrics forKey:OSSNetworkTaskMetrics];
+                [taskCompletionSource setError:[NSError errorWithDomain:error.domain
+                                                                   code:error.code
+                                                               userInfo:userInfo]];
+            } else {
+                [taskCompletionSource setError:error];
+            }
+        }else
+        {
+            [self checkForCrc64WithResult:responseObject
+                          requestDelegate:weakRequest
+                     taskCompletionSource:taskCompletionSource];
+        }
+    };
+    [self dataTaskWithDelegate:request];
+    return taskCompletionSource.task;
+}
+
+- (void)checkForCrc64WithResult:(nonnull id)response requestDelegate:(OSSNetworkingRequestDelegate *)delegate taskCompletionSource:(OSSTaskCompletionSource *)source
+{
+    OSSResult *result = (OSSResult *)response;
+    BOOL hasRange = [delegate.internalRequest valueForHTTPHeaderField:@"Range"] != nil;
+    NSURLComponents *urlComponents = [NSURLComponents componentsWithURL:delegate.internalRequest.URL resolvingAgainstBaseURL:YES];
+    BOOL hasXOSSProcess = [urlComponents.query containsString:@"x-oss-process"];
+    BOOL enableCRC = delegate.crc64Verifiable;
+    // 3.判断如果未开启crc校验,或者headerFields里面有Range字段或者参数表中存在
+    //   x-oss-process字段,都将不进行crc校验
+    if (!enableCRC || hasRange || hasXOSSProcess)
+    {
+        [source setResult:response];
+    }
+    else
+    {
+        OSSLogVerbose(@"--- checkForCrc64WithResult --- ");
+        // 如果服务端未返回crc信息，默认是成功的
+        OSSLogVerbose(@"result.remoteCRC64ecma : %@",result.remoteCRC64ecma);
+        OSSLogVerbose(@"if result.localCRC64ecma : %@",result.localCRC64ecma);
+        if (!result.remoteCRC64ecma.oss_isNotEmpty)
+        {
+            [source setResult:response];
+            return;
+        }
+        // getObject 操作的crc数值会在delegate.responseParser consumeHttpResponseBody 进行计算。
+        // upload & put 操作在上传成功后再计算。
+        // 如果用户设置onReceiveData block。无法计算localCRC64ecma
+        if (!result.localCRC64ecma.oss_isNotEmpty)
+        {
+            OSSLogVerbose(@"delegate.uploadingFileURL : %@",delegate.uploadingFileURL);
+            if (delegate.uploadingFileURL)
+            {
+                OSSInputStreamHelper *helper = [[OSSInputStreamHelper alloc] initWithURL:delegate.uploadingFileURL];
+                [helper syncReadBuffers];
+                if (helper.crc64 != 0) {
+                    result.localCRC64ecma = [NSString stringWithFormat:@"%llu",helper.crc64];
+                }
+            }
+            else
+            {
+                result.localCRC64ecma = delegate.contentCRC;
+            }
+            OSSLogVerbose(@"finally result.localCRC64ecma : %@",result.localCRC64ecma);
+        }
+
+        
+        // 针对append接口，需要多次计算crc值
+        if ([delegate.lastCRC oss_isNotEmpty] && [result.localCRC64ecma oss_isNotEmpty])
+        {
+            uint64_t last_crc64,local_crc64;
+            NSScanner *scanner = [NSScanner scannerWithString:delegate.lastCRC];
+            [scanner scanUnsignedLongLong:&last_crc64];
+            
+            scanner = [NSScanner scannerWithString:result.localCRC64ecma];
+            [scanner scanUnsignedLongLong:&local_crc64];
+            
+            NSURLComponents *urlComponents = [NSURLComponents componentsWithURL:delegate.internalRequest.URL resolvingAgainstBaseURL:YES];
+            NSArray<NSString *> *params = [urlComponents.query componentsSeparatedByString:@"&"];
+            
+            __block NSString *positionValue;
+            [params enumerateObjectsUsingBlock:^(NSString *obj, NSUInteger idx, BOOL * _Nonnull stop) {
+                if ([obj rangeOfString:@"position="].location == 0)
+                {
+                    *stop = YES;
+                    positionValue = [obj substringFromIndex:9];
+                }
+            }];
+            
+            uint64_t position = [positionValue longLongValue];
+            NSString *next_append_position = [result.httpResponseHeaderFields objectForKey:@"x-oss-next-append-position"];
+            uint64_t length = [next_append_position longLongValue] - position;
+            
+            uint64_t crc_local = [OSSUtil crc64ForCombineCRC1:last_crc64 CRC2:local_crc64 length:(size_t)length];
+            result.localCRC64ecma = [NSString stringWithFormat:@"%llu",crc_local];
+            OSSLogVerbose(@"crc_local: %llu, crc_remote: %@,last_position: %llu,nextAppendPosition: %llu,length:  %llu",crc_local,result.remoteCRC64ecma,position,[next_append_position longLongValue],length);
+        }
+        //如果服务器和本机计算的crc值不一致,则报crc校验失败;否则,认为上传任务执行成功
+        if (result.remoteCRC64ecma.oss_isNotEmpty && result.localCRC64ecma.oss_isNotEmpty)
+        {
+            if ([result.remoteCRC64ecma isEqualToString:result.localCRC64ecma])
+            {
+                [source setResult:response];
+            }else
+            {
+                NSString *errorMessage = [NSString stringWithFormat:@"crc validation fails(local_crc64ecma: %@,remote_crc64ecma: %@)",result.localCRC64ecma,result.remoteCRC64ecma];
+                
+                NSError *crcError = [NSError errorWithDomain:OSSClientErrorDomain
+                                                        code:OSSClientErrorCodeInvalidCRC
+                                                    userInfo:@{OSSErrorMessageTOKEN:errorMessage}];
+                [source setError:crcError];
+            }
+        }
+        else
+        {
+            [source setResult:response];
+        }
+    }
+}
+
+- (void)dataTaskWithDelegate:(OSSNetworkingRequestDelegate *)requestDelegate {
+
+    [[[[[OSSTask taskWithResult:nil] continueWithExecutor:self.taskExecutor withSuccessBlock:^id(OSSTask *task) {
+        OSSLogVerbose(@"start to intercept request");
+        for (id<OSSRequestInterceptor> interceptor in requestDelegate.interceptors) {
+            task = [interceptor interceptRequestMessage:requestDelegate.allNeededMessage];
+            if (task.error) {
+                return task;
+            }
+        }
+        return task;
+    }] continueWithSuccessBlock:^id(OSSTask *task) {
+        return [requestDelegate buildInternalHttpRequest];
+    }] continueWithSuccessBlock:^id(OSSTask *task) {
+        NSURLSessionDataTask * sessionTask = nil;
+        if (self.configuration.timeoutIntervalForRequest > 0) {
+            requestDelegate.internalRequest.timeoutInterval = self.configuration.timeoutIntervalForRequest;
+        }
+
+        if (requestDelegate.uploadingData) {
+            [requestDelegate.internalRequest setHTTPBody:requestDelegate.uploadingData];
+            sessionTask = [_session dataTaskWithRequest:requestDelegate.internalRequest];
+        } else if (requestDelegate.uploadingFileURL) {
+            sessionTask = [_session uploadTaskWithRequest:requestDelegate.internalRequest fromFile:requestDelegate.uploadingFileURL];
+
+                requestDelegate.isBackgroundUploadFileTask = self.isUsingBackgroundSession;
+        } else { // not upload request
+            sessionTask = [_session dataTaskWithRequest:requestDelegate.internalRequest];
+        }
+
+        requestDelegate.currentSessionTask = sessionTask;
+        requestDelegate.httpRequestNotSuccessResponseBody = [NSMutableData new];
+        [self.sessionDelagateManager setObject:requestDelegate forKey:@(sessionTask.taskIdentifier)];
+        if (requestDelegate.isRequestCancelled) {
+            return [OSSTask taskWithError:[NSError errorWithDomain:OSSClientErrorDomain
+                                                              code:OSSClientErrorCodeTaskCancelled
+                                                          userInfo:nil]];
+        }
+        [sessionTask resume];
+      
+        return task;
+    }] continueWithBlock:^id(OSSTask *task) {
+
+        // if error occurs before created sessionTask
+        if (task.error) {
+            requestDelegate.completionHandler(nil, task.error);
+        } else if (task.isFaulted) {
+            requestDelegate.completionHandler(nil, [NSError errorWithDomain:OSSClientErrorDomain
+                                                                       code:OSSClientErrorCodeExcpetionCatched
+                                                                   userInfo:@{OSSErrorMessageTOKEN: [NSString stringWithFormat:@"Catch exception - %@", task.exception]}]);
+        }
+        return nil;
+    }];
+}
+
+#pragma mark - NSURLSessionTaskDelegate Methods
+
+- (void)URLSession:(NSURLSession *)session task:(NSURLSessionTask *)sessionTask didCompleteWithError:(NSError *)error
+{
+    if (error) {
+        OSSLogError(@"%@,error: %@", NSStringFromSelector(_cmd), error);
+    }
+    
+    OSSNetworkingRequestDelegate * delegate = [self.sessionDelagateManager objectForKey:@(sessionTask.taskIdentifier)];
+    [self.sessionDelagateManager removeObjectForKey:@(sessionTask.taskIdentifier)];
+
+    NSHTTPURLResponse * httpResponse = (NSHTTPURLResponse *)sessionTask.response;
+    if (delegate == nil) {
+        OSSLogVerbose(@"delegate: %@", delegate);
+        /* if the background transfer service is enable, may recieve the previous task complete callback */
+        /* for now, we ignore it */
+        return ;
+    }
+
+    /* background upload task will not call back didRecieveResponse */
+    if (delegate.isBackgroundUploadFileTask) {
+        OSSLogVerbose(@"backgroud upload task did recieve response: %@", httpResponse);
+        if (httpResponse.statusCode >= 200 && httpResponse.statusCode < 300 && httpResponse.statusCode != 203) {
+            [delegate.responseParser consumeHttpResponse:httpResponse];
+        } else {
+            delegate.isHttpRequestNotSuccessResponse = YES;
+        }
+    }
+
+    [[[[OSSTask taskWithResult:nil] continueWithSuccessBlock:^id(OSSTask * task) {
+        if (!delegate.error) {
+            delegate.error = error;
+        }
+        if (delegate.error) {
+            OSSLogDebug(@"networking request completed with error: %@", error);
+            if ([delegate.error.domain isEqualToString:NSURLErrorDomain] && delegate.error.code == NSURLErrorCancelled) {
+                return [OSSTask taskWithError:[NSError errorWithDomain:OSSClientErrorDomain
+                                                                 code:OSSClientErrorCodeTaskCancelled
+                                                             userInfo:[error userInfo]]];
+            } else {
+                NSMutableDictionary * userInfo = [NSMutableDictionary dictionaryWithDictionary:[error userInfo]];
+                [userInfo setObject:[NSString stringWithFormat:@"%ld", (long)error.code] forKey:@"OriginErrorCode"];
+                return [OSSTask taskWithError:[NSError errorWithDomain:OSSClientErrorDomain
+                                                                 code:OSSClientErrorCodeNetworkError
+                                                             userInfo:userInfo]];
+            }
+        }
+        return task;
+    }] continueWithSuccessBlock:^id(OSSTask *task) {
+        if (delegate.isHttpRequestNotSuccessResponse) {
+            if (httpResponse.statusCode == 0) {
+                return [OSSTask taskWithError:[NSError errorWithDomain:OSSClientErrorDomain
+                                                                 code:OSSClientErrorCodeNetworkingFailWithResponseCode0
+                                                             userInfo:@{OSSErrorMessageTOKEN: @"Request failed, response code 0"}]];
+            }
+            NSString * notSuccessResponseBody = [[NSString alloc] initWithData:delegate.httpRequestNotSuccessResponseBody encoding:NSUTF8StringEncoding];
+            OSSLogError(@"http error response: %@", notSuccessResponseBody);
+            NSDictionary * dict = [NSDictionary oss_dictionaryWithXMLString:notSuccessResponseBody];
+
+            return [OSSTask taskWithError:[NSError errorWithDomain:OSSServerErrorDomain
+                                                             code:(-1 * httpResponse.statusCode)
+                                                         userInfo:dict]];
+        }
+        return task;
+    }] continueWithBlock:^id(OSSTask *task) {
+        if (task.error) {
+            
+            
+            OSSNetworkingRetryType retryType = [delegate.retryHandler shouldRetry:delegate.currentRetryCount
+                                                                  requestDelegate:delegate
+                                                                         response:httpResponse
+                                                                            error:task.error];
+            OSSLogVerbose(@"current retry count: %u, retry type: %d", delegate.currentRetryCount, (int)retryType);
+
+            switch (retryType) {
+
+                case OSSNetworkingRetryTypeShouldNotRetry: {
+                    delegate.completionHandler(nil, task.error);
+                    return nil;
+                }
+
+                case OSSNetworkingRetryTypeShouldCorrectClockSkewAndRetry: {
+                    /* correct clock skew */
+                    NSString * dateStr = [[httpResponse allHeaderFields] objectForKey:@"Date"];
+                    if ([dateStr length] > 0) {
+                        NSDate * serverTime = [NSDate oss_dateFromString:dateStr];
+                        NSDate * deviceTime = [NSDate date];
+                        NSTimeInterval skewTime = [deviceTime timeIntervalSinceDate:serverTime];
+                        [NSDate oss_setClockSkew:skewTime];
+                    } else if (!error) {
+                        // The response header does not have the 'Date' field.
+                        // This should not happen.
+                        OSSLogError(@"Date header does not exist, unable to fix the clock skew");
+                    }
+                    
+                    break;
+                }
+
+                default:
+                    break;
+            }
+
+            /* now, should retry */
+            NSTimeInterval suspendTime = [delegate.retryHandler timeIntervalForRetry:delegate.currentRetryCount retryType:retryType];
+            delegate.currentRetryCount++;
+            [NSThread sleepForTimeInterval:suspendTime];
+            
+            if(delegate.retryCallback){
+                delegate.retryCallback();
+            }
+            
+
+            /* retry recursively */
+            [delegate reset];
+            
+            [self dataTaskWithDelegate:delegate];
+        } else {
+            OSSResult *result = [delegate.responseParser constructResultObject];
+            result.metrics = delegate.metrics;
+            delegate.completionHandler(result, nil);
+        }
+        return nil;
+    }];
+}
+
+- (void)URLSession:(NSURLSession *)session task:(NSURLSessionTask *)task didSendBodyData:(int64_t)bytesSent totalBytesSent:(int64_t)totalBytesSent totalBytesExpectedToSend:(int64_t)totalBytesExpectedToSend
+{
+    OSSNetworkingRequestDelegate * delegate = [self.sessionDelagateManager objectForKey:@(task.taskIdentifier)];
+    if (delegate.uploadProgress)
+    {
+        delegate.uploadProgress(bytesSent, totalBytesSent, totalBytesExpectedToSend);
+    }
+}
+
+- (void)URLSession:(NSURLSession *)session task:(NSURLSessionTask *)task didReceiveChallenge:(NSURLAuthenticationChallenge *)challenge completionHandler:(void (^)(NSURLSessionAuthChallengeDisposition disposition, NSURLCredential * __nullable credential))completionHandler
+{
+    if (!challenge) {
+        return;
+    }
+    
+    NSURLSessionAuthChallengeDisposition disposition = NSURLSessionAuthChallengePerformDefaultHandling;
+    NSURLCredential *credential = nil;
+    
+    /*
+     * Gets the host name
+     */
+    
+    NSString * host = [[task.currentRequest allHTTPHeaderFields] objectForKey:@"Host"];
+    if (!host) {
+        host = task.currentRequest.URL.host;
+    }
+    
+    if ([challenge.protectionSpace.authenticationMethod isEqualToString:NSURLAuthenticationMethodServerTrust]) {
+        if ([self evaluateServerTrust:challenge.protectionSpace.serverTrust forDomain:host]) {
+            disposition = NSURLSessionAuthChallengeUseCredential;
+            credential = [NSURLCredential credentialForTrust:challenge.protectionSpace.serverTrust];
+        }
+    } else {
+        disposition = NSURLSessionAuthChallengePerformDefaultHandling;
+    }
+    // Uses the default evaluation for other challenges.
+    completionHandler(disposition,credential);
+}
+
+- (void)URLSessionDidFinishEventsForBackgroundURLSession:(NSURLSession *)session
+{
+    
+}
+
+- (void)URLSession:(NSURLSession *)session task:(NSURLSessionTask *)task
+                     willPerformHTTPRedirection:(NSHTTPURLResponse *)response
+                                     newRequest:(NSURLRequest *)request
+                              completionHandler:(void (^)(NSURLRequest * _Nullable))completionHandler {
+    if (self.configuration.enableFollowRedirects) {
+        completionHandler(request);
+    } else {
+        completionHandler(nil);
+    }
+}
+
+- (void)URLSession:(NSURLSession *)session task:(NSURLSessionTask *)task didFinishCollectingMetrics:(NSURLSessionTaskMetrics *)metrics {
+    if (self.configuration.enableNetworkMetricInfo) {
+        OSSNetworkingRequestDelegate *delegate = [self.sessionDelagateManager objectForKey:@(task.taskIdentifier)];
+        delegate.metrics = metrics;
+        OSSLogDebug(@"%@", metrics);
+    }
+}
+
+#pragma mark - NSURLSessionDataDelegate Methods
+
+- (void)URLSession:(NSURLSession *)session dataTask:(NSURLSessionDataTask *)dataTask didReceiveResponse:(NSURLResponse *)response completionHandler:(void (^)(NSURLSessionResponseDisposition))completionHandler
+{
+    /* background upload task will not call back didRecieveResponse */
+    OSSLogVerbose(@"%@,response: %@", NSStringFromSelector(_cmd), response);
+    
+    OSSNetworkingRequestDelegate * delegate = [self.sessionDelagateManager objectForKey:@(dataTask.taskIdentifier)];
+    NSHTTPURLResponse * httpResponse = (NSHTTPURLResponse *)response;
+    if (httpResponse.statusCode >= 200 && httpResponse.statusCode < 300 && httpResponse.statusCode != 203) {
+        [delegate.responseParser consumeHttpResponse:httpResponse];
+    } else {
+        delegate.isHttpRequestNotSuccessResponse = YES;
+    }
+    completionHandler(NSURLSessionResponseAllow);
+}
+
+- (void)URLSession:(NSURLSession *)session dataTask:(NSURLSessionDataTask *)dataTask didReceiveData:(NSData *)data
+{
+    OSSNetworkingRequestDelegate * delegate = [self.sessionDelagateManager objectForKey:@(dataTask.taskIdentifier)];
+
+    /* background upload task will not call back didRecieveResponse.
+       so if we recieve response data after background uploading file,
+       we consider it as error response message since a successful uploading request will not response any data */
+    if (delegate.isBackgroundUploadFileTask)
+    {
+        //判断当前的statuscode是否成功
+        NSHTTPURLResponse * httpResponse = (NSHTTPURLResponse *)dataTask.response;
+        if (httpResponse.statusCode >= 200 && httpResponse.statusCode < 300 && httpResponse.statusCode != 203) {
+            [delegate.responseParser consumeHttpResponse:httpResponse];
+            delegate.isHttpRequestNotSuccessResponse = NO;
+        }else
+        {
+            delegate.isHttpRequestNotSuccessResponse = YES;
+        }
+    }
+    
+    if (delegate.isHttpRequestNotSuccessResponse) {
+        [delegate.httpRequestNotSuccessResponseBody appendData:data];
+    }
+    else {
+        if (delegate.onRecieveData) {
+            delegate.onRecieveData(data);
+        } else {
+            OSSTask * consumeTask = [delegate.responseParser consumeHttpResponseBody:data];
+            if (consumeTask.error) {
+                OSSLogError(@"consume data error: %@", consumeTask.error);
+                delegate.error = consumeTask.error;
+                [dataTask cancel];
+            }
+        }
+    }
+
+    if (!delegate.isHttpRequestNotSuccessResponse && delegate.downloadProgress) {
+        int64_t bytesWritten = [data length];
+        delegate.payloadTotalBytesWritten += bytesWritten;
+        int64_t totalBytesExpectedToWrite = dataTask.response.expectedContentLength;
+        delegate.downloadProgress(bytesWritten, delegate.payloadTotalBytesWritten, totalBytesExpectedToWrite);
+    }
+}
+
+#pragma mark - Private Methods
+
+- (BOOL)evaluateServerTrust:(SecTrustRef)serverTrust forDomain:(NSString *)domain {
+    /*
+     * Creates the policies for certificate verification.
+     */
+    NSMutableArray *policies = [NSMutableArray array];
+    if (domain) {
+        [policies addObject:(__bridge_transfer id)SecPolicyCreateSSL(true, (__bridge CFStringRef)domain)];
+    } else {
+        [policies addObject:(__bridge_transfer id)SecPolicyCreateBasicX509()];
+    }
+    
+    /*
+     * Sets the policies to server's certificate
+     */
+    SecTrustSetPolicies(serverTrust, (__bridge CFArrayRef)policies);
+    
+    
+    /*
+     * Evaulates if the current serverTrust is trustable.
+     * It's officially suggested that the serverTrust could be passed when result = kSecTrustResultUnspecified or kSecTrustResultProceed.
+     * For more information checks out https://developer.apple.com/library/ios/technotes/tn2232/_index.html
+     * For detail information about SecTrustResultType, checks out SecTrust.h
+     */
+    SecTrustResultType result;
+    SecTrustEvaluate(serverTrust, &result);
+    
+    return (result == kSecTrustResultUnspecified || result == kSecTrustResultProceed);
+}
+
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSNetworkingRequestDelegate.h

@@ -0,0 +1,81 @@
+//
+//  OSSNetworkingRequestDelegate.h
+//  AliyunOSSSDK
+//
+//  Created by huaixu on 2018/1/22.
+//  Copyright © 2018年 aliyun. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+#import "OSSConstants.h"
+#import "OSSTask.h"
+
+@class OSSAllRequestNeededMessage;
+@class OSSURLRequestRetryHandler;
+@class OSSHttpResponseParser;
+
+/**
+ The proxy object class for each OSS request.
+ */
+@interface OSSNetworkingRequestDelegate : NSObject
+
+@property (nonatomic, strong) NSMutableArray * interceptors;
+
+@property (nonatomic, strong) NSMutableURLRequest *internalRequest;
+@property (nonatomic, assign) OSSOperationType operType;
+@property (nonatomic, assign) BOOL isAccessViaProxy;
+
+@property (nonatomic, assign) BOOL isRequestCancelled;
+
+@property (nonatomic, strong) OSSAllRequestNeededMessage *allNeededMessage;
+@property (nonatomic, strong) OSSURLRequestRetryHandler *retryHandler;
+@property (nonatomic, strong) OSSHttpResponseParser *responseParser;
+
+@property (nonatomic, strong) NSData * uploadingData;
+@property (nonatomic, strong) NSURL * uploadingFileURL;
+
+@property (nonatomic, assign) int64_t payloadTotalBytesWritten;
+
+@property (nonatomic, assign) BOOL isBackgroundUploadFileTask;
+@property (nonatomic, assign) BOOL isHttpdnsEnable;
+
+@property (nonatomic, assign) BOOL isPathStyleAccessEnable;
+@property (nonatomic, assign) BOOL isCustomPathPrefixEnable;
+@property (nonatomic, copy) NSArray * cnameExcludeList;
+
+@property (nonatomic, assign) uint32_t currentRetryCount;
+@property (nonatomic, strong) NSError * error;
+@property (nonatomic, assign) BOOL isHttpRequestNotSuccessResponse;
+@property (nonatomic, strong) NSMutableData *httpRequestNotSuccessResponseBody;
+
+@property (atomic, strong) NSURLSessionDataTask *currentSessionTask;
+
+@property (nonatomic, strong) NSURLSessionTaskMetrics *metrics API_AVAILABLE(macos(10.12), ios(10.0));
+
+@property (nonatomic, copy) OSSNetworkingUploadProgressBlock uploadProgress;
+@property (nonatomic, copy) OSSNetworkingDownloadProgressBlock downloadProgress;
+@property (nonatomic, copy) OSSNetworkingRetryBlock retryCallback;
+@property (nonatomic, copy) OSSNetworkingCompletionHandlerBlock completionHandler;
+@property (nonatomic, copy) OSSNetworkingOnRecieveDataBlock onRecieveData;
+
+/**
+ * when put object to server,client caculate crc64 code and assigns it to
+ * this property.
+ */
+@property (nonatomic, copy) NSString *contentCRC;
+
+/** last crc64 code */
+@property (nonatomic, copy) NSString *lastCRC;
+
+/**
+ * determine whether to verify crc64 code
+ */
+@property (nonatomic, assign) BOOL crc64Verifiable;
+
+
+
+- (OSSTask *)buildInternalHttpRequest;
+- (void)reset;
+- (void)cancel;
+
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSNetworkingRequestDelegate.m

@@ -0,0 +1,186 @@
+//
+//  OSSNetworkingRequestDelegate.m
+//  AliyunOSSSDK
+//
+//  Created by huaixu on 2018/1/22.
+//  Copyright © 2018年 aliyun. All rights reserved.
+//
+
+#import "OSSNetworkingRequestDelegate.h"
+
+#import "OSSAllRequestNeededMessage.h"
+#import "OSSURLRequestRetryHandler.h"
+#import "OSSHttpResponseParser.h"
+#import "OSSDefine.h"
+#import "OSSUtil.h"
+#import "OSSLog.h"
+#import "OSSIPv6Adapter.h"
+
+@implementation OSSNetworkingRequestDelegate
+
+- (instancetype)init {
+    if (self = [super init]) {
+        self.retryHandler = [OSSURLRequestRetryHandler defaultRetryHandler];
+        self.interceptors = [[NSMutableArray alloc] init];
+        self.isHttpdnsEnable = YES;
+    }
+    return self;
+}
+
+- (void)reset {
+    self.isHttpRequestNotSuccessResponse = NO;
+    self.error = nil;
+    self.payloadTotalBytesWritten = 0;
+    self.isRequestCancelled = NO;
+    [self.responseParser reset];
+}
+
+- (void)cancel {
+    self.isRequestCancelled = YES;
+    if (self.currentSessionTask) {
+        OSSLogDebug(@"this task is cancelled now!");
+        [self.currentSessionTask cancel];
+    }
+}
+
+- (OSSTask *)validateRequestParams {
+    NSString * errorMessage = nil;
+    
+    if ((self.operType == OSSOperationTypeAppendObject || self.operType == OSSOperationTypePutObject || self.operType == OSSOperationTypeUploadPart)
+        && !self.uploadingData && !self.uploadingFileURL) {
+        errorMessage = @"This operation need data or file to upload but none is set";
+    }
+    
+    if (self.uploadingFileURL && ![[NSFileManager defaultManager] fileExistsAtPath:[self.uploadingFileURL path]]) {
+        errorMessage = @"File doesn't exist";
+    }
+    
+    if (errorMessage) {
+        return [OSSTask taskWithError:[NSError errorWithDomain:OSSClientErrorDomain
+                                                          code:OSSClientErrorCodeInvalidArgument
+                                                      userInfo:@{OSSErrorMessageTOKEN: errorMessage}]];
+    } else {
+        return [self.allNeededMessage validateRequestParamsInOperationType:self.operType];
+    }
+}
+
+- (OSSTask *)buildInternalHttpRequest {
+    
+    OSSTask * validateParam = [self validateRequestParams];
+    if (validateParam.error) {
+        return validateParam;
+    }
+    
+#define URLENCODE(a) [OSSUtil encodeURL:(a)]
+    OSSLogDebug(@"start to build request")
+    // build base url string
+    NSString *bucketName = self.allNeededMessage.bucketName;
+    NSString *objectKey = self.allNeededMessage.objectKey;
+    NSString *urlString = self.allNeededMessage.endpoint;
+    NSURLComponents *urlComponents = [[NSURLComponents alloc] initWithString:urlString];
+    NSString *headerHost = nil;
+    BOOL isPathStyle = NO;
+    
+    NSURLComponents *temComs = [NSURLComponents new];
+    temComs.scheme = urlComponents.scheme;
+    temComs.host = urlComponents.host;
+    temComs.port = urlComponents.port;
+    if (self.isCustomPathPrefixEnable) {
+        temComs.path = urlComponents.path;
+    }
+    
+    if ([self.allNeededMessage.bucketName oss_isNotEmpty]) {
+        OSSIPv6Adapter *ipAdapter = [OSSIPv6Adapter getInstance];
+        if ([OSSUtil isOssOriginBucketHost:temComs.host]) {
+            // eg. insert bucket to the begining of host.
+            temComs.host = [NSString stringWithFormat:@"%@.%@", self.allNeededMessage.bucketName, temComs.host];
+            headerHost = temComs.host;
+            if ([temComs.scheme.lowercaseString isEqualToString:@"http"] && self.isHttpdnsEnable) {
+                NSString *dnsResult = [OSSUtil getIpByHost: temComs.host];
+                temComs.host = dnsResult;
+            }
+        } else if (self.allNeededMessage.isHostInCnameExcludeList) {
+            if (self.isPathStyleAccessEnable) {
+                isPathStyle = YES;
+            } else {
+                temComs.host = [NSString stringWithFormat:@"%@.%@", self.allNeededMessage.bucketName, temComs.host];
+            }
+        } else if ([ipAdapter isIPv4Address:temComs.host] || [ipAdapter isIPv6Address:temComs.host]) {
+            isPathStyle = YES;
+        }
+    }
+    
+    urlString = temComs.string;
+    
+    if (isPathStyle) {
+        urlString = [NSString stringWithFormat:@"%@/%@", urlString, bucketName];
+    }
+    // join object name
+    if ([self.allNeededMessage.objectKey oss_isNotEmpty]) {
+        urlString = [urlString oss_stringByAppendingPathComponentForURL:URLENCODE(self.allNeededMessage.objectKey)];
+    }
+    
+    // join query string
+    if (self.allNeededMessage.params) {
+        NSMutableArray * querys = [[NSMutableArray alloc] init];
+        for (NSString * key in [self.allNeededMessage.params allKeys]) {
+            NSString * value = [self.allNeededMessage.params objectForKey:key];
+            if (value) {
+                if ([value isEqualToString:@""]) {
+                    [querys addObject:URLENCODE(key)];
+                } else {
+                    [querys addObject:[NSString stringWithFormat:@"%@=%@", URLENCODE(key), URLENCODE(value)]];
+                }
+            }
+        }
+        if (querys && [querys count]) {
+            NSString * queryString = [querys componentsJoinedByString:@"&"];
+            urlString = [NSString stringWithFormat:@"%@?%@", urlString, queryString];
+        }
+    }
+    
+    OSSLogDebug(@"built full url: %@", urlString)
+    
+    // generate internal request For NSURLSession
+    self.internalRequest = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:urlString]];
+    
+    // set http method of request
+    if (self.allNeededMessage.httpMethod) {
+        [self.internalRequest setHTTPMethod:self.allNeededMessage.httpMethod];
+    }
+    
+    // set host of header fields
+    if ([headerHost oss_isNotEmpty]) {
+        [self.internalRequest setValue:headerHost forHTTPHeaderField:@"Host"];
+    }
+    
+    if (self.allNeededMessage.contentType) {
+        [self.internalRequest setValue:self.allNeededMessage.contentType forHTTPHeaderField:@"Content-Type"];
+    }
+    if (self.allNeededMessage.contentMd5) {
+        [self.internalRequest setValue:self.allNeededMessage.contentMd5 forHTTPHeaderField:@"Content-MD5"];
+    }
+    if (self.allNeededMessage.date) {
+        [self.internalRequest setValue:self.allNeededMessage.date forHTTPHeaderField:@"Date"];
+    }
+    if (self.allNeededMessage.range) {
+        [self.internalRequest setValue:self.allNeededMessage.range forHTTPHeaderField:@"Range"];
+    }
+    if (self.allNeededMessage.contentSHA1) {
+        [self.internalRequest setValue:_allNeededMessage.contentSHA1 forHTTPHeaderField:@"x-oss-hash-sha1"];
+    }
+    if (self.allNeededMessage.headerParams) {
+        for (NSString * key in [self.allNeededMessage.headerParams allKeys]) {
+            [self.internalRequest setValue:[self.allNeededMessage.headerParams objectForKey:key] forHTTPHeaderField:key];
+        }
+    }
+    
+    
+    OSSLogVerbose(@"buidlInternalHttpRequest -\nmethod: %@\nurl: %@\nheader: %@", self.internalRequest.HTTPMethod,
+                  self.internalRequest.URL, self.internalRequest.allHTTPHeaderFields)
+    
+#undef URLENCODE//(a)
+    return [OSSTask taskWithResult:nil];
+}
+
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSPutObjectTaggingRequest.h

@@ -0,0 +1,27 @@
+//
+//  OSSPutObjectTaggingRequest.h
+//  AliyunOSSSDK
+//
+//  Created by ws on 2021/5/25.
+//  Copyright © 2021 aliyun. All rights reserved.
+//
+
+#import "OSSRequest.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface OSSPutObjectTaggingRequest : OSSRequest
+
+/* bucket name */
+@property (nonatomic, copy) NSString *bucketName;
+
+/* object name */
+@property (nonatomic, copy) NSString *objectKey;
+
+@property (nonatomic, copy) NSDictionary *tags;
+
+- (NSDictionary *)entityToDictionary;
+
+@end
+
+NS_ASSUME_NONNULL_END

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSPutObjectTaggingRequest.m

@@ -0,0 +1,29 @@
+//
+//  OSSPutObjectTaggingRequest.m
+//  AliyunOSSSDK
+//
+//  Created by ws on 2021/5/25.
+//  Copyright © 2021 aliyun. All rights reserved.
+//
+
+#import "OSSPutObjectTaggingRequest.h"
+
+@implementation OSSPutObjectTaggingRequest
+
+- (NSDictionary *)requestParams {
+    return @{@"tagging": @""};
+}
+
+- (NSDictionary *)entityToDictionary {
+    NSMutableArray *tags = [NSMutableArray array];
+    for (NSString *key in [self.tags allKeys]) {
+        NSString *value = self.tags[key];
+        NSDictionary *tag = @{@"Tag": @{@"Key":key,
+                                        @"Value": value}};
+        [tags addObject:tag];
+    }
+    NSDictionary *entity = @{@"Tagging": @{@"TagSet": tags}};
+    return entity;
+}
+
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSPutObjectTaggingResult.h

@@ -0,0 +1,17 @@
+//
+//  OSSPutObjectTaggingResult.h
+//  AliyunOSSSDK
+//
+//  Created by ws on 2021/5/25.
+//  Copyright © 2021 aliyun. All rights reserved.
+//
+
+#import "OSSResult.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface OSSPutObjectTaggingResult : OSSResult
+
+@end
+
+NS_ASSUME_NONNULL_END

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSPutObjectTaggingResult.m

@@ -0,0 +1,13 @@
+//
+//  OSSPutObjectTaggingResult.m
+//  AliyunOSSSDK
+//
+//  Created by ws on 2021/5/25.
+//  Copyright © 2021 aliyun. All rights reserved.
+//
+
+#import "OSSPutObjectTaggingResult.h"
+
+@implementation OSSPutObjectTaggingResult
+
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSPutSymlinkRequest.h

@@ -0,0 +1,25 @@
+//
+//  OSSPutSymlinkRequest.h
+//  AliyunOSSSDK
+//
+//  Created by huaixu on 2018/8/1.
+//  Copyright © 2018年 aliyun. All rights reserved.
+//
+
+#import "OSSRequest.h"
+
+@interface OSSPutSymlinkRequest : OSSRequest
+
+/* bucket name */
+@property (nonatomic, copy) NSString *bucketName;
+
+/* object name */
+@property (nonatomic, copy) NSString *objectKey;
+
+/* target object name */
+@property (nonatomic, copy) NSString *targetObjectName;
+
+/* meta info in request header fields */
+@property (nonatomic, copy) NSDictionary *objectMeta;
+
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSPutSymlinkRequest.m

@@ -0,0 +1,17 @@
+//
+//  OSSPutSymlinkRequest.m
+//  AliyunOSSSDK
+//
+//  Created by huaixu on 2018/8/1.
+//  Copyright © 2018年 aliyun. All rights reserved.
+//
+
+#import "OSSPutSymlinkRequest.h"
+
+@implementation OSSPutSymlinkRequest
+
+- (NSDictionary *)requestParams {
+    return @{@"symlink": @""};
+}
+
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSPutSymlinkResult.h

@@ -0,0 +1,13 @@
+//
+//  OSSPutSymlinkResult.h
+//  AliyunOSSSDK
+//
+//  Created by huaixu on 2018/8/1.
+//  Copyright © 2018年 aliyun. All rights reserved.
+//
+
+#import "OSSResult.h"
+
+@interface OSSPutSymlinkResult : OSSResult
+
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSPutSymlinkResult.m

@@ -0,0 +1,13 @@
+//
+//  OSSPutSymlinkResult.m
+//  AliyunOSSSDK
+//
+//  Created by huaixu on 2018/8/1.
+//  Copyright © 2018年 aliyun. All rights reserved.
+//
+
+#import "OSSPutSymlinkResult.h"
+
+@implementation OSSPutSymlinkResult
+
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSRequest.h

@@ -0,0 +1,41 @@
+//
+//  OSSRequest.h
+//  AliyunOSSSDK
+//
+//  Created by huaixu on 2018/1/22.
+//  Copyright © 2018年 aliyun. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+#import "OSSConstants.h"
+
+/**
+ The base class of request to OSS.
+ */
+@interface OSSRequest : NSObject
+/**
+ Flag of requiring authentication. It's per each request.
+ */
+@property (nonatomic, assign) BOOL isAuthenticationRequired;
+
+/**
+ the flag of request canceled.
+ */
+@property (atomic, assign) BOOL isCancelled;
+
+/**
+ the flag of verification about crc64
+ */
+@property (nonatomic, assign) OSSRequestCRCFlag crcFlag;
+
+/**
+ Cancels the request
+ */
+- (void)cancel;
+
+/**
+ Gets the query parameters' dictionary according to the properties.
+ */
+- (NSDictionary *)requestParams;
+
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSRequest.m

@@ -0,0 +1,41 @@
+//
+//  OSSRequest.m
+//  AliyunOSSSDK
+//
+//  Created by huaixu on 2018/1/22.
+//  Copyright © 2018年 aliyun. All rights reserved.
+//
+
+#import "OSSRequest.h"
+#import "OSSNetworkingRequestDelegate.h"
+
+@interface OSSRequest ()
+
+@property (nonatomic, strong) OSSNetworkingRequestDelegate *requestDelegate;
+
+@end
+
+
+@implementation OSSRequest
+
+- (instancetype)init {
+    if (self = [super init]) {
+        self.requestDelegate = [OSSNetworkingRequestDelegate new];
+        self.isAuthenticationRequired = YES;
+    }
+    return self;
+}
+
+- (void)cancel {
+    self.isCancelled = YES;
+    
+    if (self.requestDelegate) {
+        [self.requestDelegate cancel];
+    }
+}
+
+- (NSDictionary *)requestParams {
+    return nil;
+}
+
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSRestoreObjectRequest.h

@@ -0,0 +1,17 @@
+//
+//  OSSRestoreObjectRequest.h
+//  AliyunOSSSDK
+//
+//  Created by huaixu on 2018/8/1.
+//  Copyright © 2018年 aliyun. All rights reserved.
+//
+
+#import "OSSRequest.h"
+
+@interface OSSRestoreObjectRequest : OSSRequest
+
+@property (nonatomic, copy) NSString *bucketName;
+
+@property (nonatomic, copy) NSString *objectKey;
+
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSRestoreObjectRequest.m

@@ -0,0 +1,17 @@
+//
+//  OSSRestoreObjectRequest.m
+//  AliyunOSSSDK
+//
+//  Created by huaixu on 2018/8/1.
+//  Copyright © 2018年 aliyun. All rights reserved.
+//
+
+#import "OSSRestoreObjectRequest.h"
+
+@implementation OSSRestoreObjectRequest
+
+- (NSDictionary *)requestParams {
+    return @{@"restore": @""};
+}
+
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSRestoreObjectResult.h

@@ -0,0 +1,13 @@
+//
+//  OSSRestoreObjectResult.h
+//  AliyunOSSSDK
+//
+//  Created by huaixu on 2018/8/1.
+//  Copyright © 2018年 aliyun. All rights reserved.
+//
+
+#import "OSSResult.h"
+
+@interface OSSRestoreObjectResult : OSSResult
+
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSRestoreObjectResult.m

@@ -0,0 +1,13 @@
+//
+//  OSSRestoreObjectResult.m
+//  AliyunOSSSDK
+//
+//  Created by huaixu on 2018/8/1.
+//  Copyright © 2018年 aliyun. All rights reserved.
+//
+
+#import "OSSRestoreObjectResult.h"
+
+@implementation OSSRestoreObjectResult
+
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSResult.h

@@ -0,0 +1,45 @@
+//
+//  OSSResult.h
+//  AliyunOSSSDK
+//
+//  Created by huaixu on 2018/1/26.
+//  Copyright © 2018年 aliyun. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+
+/**
+ The base class of result from OSS.
+ */
+@interface OSSResult : NSObject
+
+/**
+ The http response code.
+ */
+@property (nonatomic, assign) NSInteger httpResponseCode;
+
+/**
+ The http headers, in the form of key value dictionary.
+ */
+@property (nonatomic, strong) NSDictionary * httpResponseHeaderFields;
+
+/**
+ The request Id. It's the value of header x-oss-request-id, which is created from OSS server.
+ It's a unique Id represents this request. This is used for troubleshooting when you contact OSS support.
+ */
+@property (nonatomic, strong) NSString * requestId;
+
+/**
+ It's the value of header x-oss-hash-crc64ecma, which is created from OSS server.
+ */
+@property (nonatomic, copy) NSString *remoteCRC64ecma;
+
+/**
+ It's the value of local Data.
+ */
+@property (nonatomic, copy) NSString *localCRC64ecma;
+
+/// statistics information for the task.
+@property (nonatomic, strong) NSURLSessionTaskMetrics *metrics API_AVAILABLE(macos(10.12), ios(10.0));
+
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSResult.m

@@ -0,0 +1,18 @@
+//
+//  OSSResult.m
+//  AliyunOSSSDK
+//
+//  Created by huaixu on 2018/1/26.
+//  Copyright © 2018年 aliyun. All rights reserved.
+//
+
+#import "OSSResult.h"
+
+@implementation OSSResult
+
+- (NSString *)description
+{
+    return [NSString stringWithFormat:@"OSSResult<%p> : {httpResponseCode: %ld, requestId: %@, httpResponseHeaderFields: %@, local_crc64ecma: %@}",self,(long)self.httpResponseCode,self.requestId,self.httpResponseHeaderFields,self.localCRC64ecma];
+}
+
+@end

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSService.h

@@ -0,0 +1,46 @@
+//
+//  OSSService.h
+//  oss_ios_sdk
+//
+//  Created by zhouzhuo on 8/20/15.
+//  Copyright (c) 2015 aliyun.com. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+
+#define OSS_IOS_SDK_VERSION OSSSDKVersion
+
+#import "OSSDefine.h"
+#import "OSSConstants.h"
+
+#import "OSSNetworking.h"
+#import "OSSNetworkingRequestDelegate.h"
+#import "OSSAllRequestNeededMessage.h"
+#import "OSSURLRequestRetryHandler.h"
+#import "OSSHttpResponseParser.h"
+#import "OSSRequest.h"
+#import "OSSGetObjectACLRequest.h"
+#import "OSSGetObjectACLResult.h"
+#import "OSSDeleteMultipleObjectsRequest.h"
+#import "OSSDeleteMultipleObjectsResult.h"
+#import "OSSGetBucketInfoRequest.h"
+#import "OSSGetBucketInfoResult.h"
+#import "OSSPutSymlinkRequest.h"
+#import "OSSPutSymlinkResult.h"
+#import "OSSGetSymlinkRequest.h"
+#import "OSSGetSymlinkResult.h"
+#import "OSSRestoreObjectRequest.h"
+#import "OSSRestoreObjectResult.h"
+#import "OSSGetObjectTaggingRequest.h"
+#import "OSSGetObjectTaggingResult.h"
+#import "OSSPutObjectTaggingRequest.h"
+#import "OSSPutObjectTaggingResult.h"
+#import "OSSDeleteObjectTaggingRequest.h"
+#import "OSSDeleteObjectTaggingResult.h"
+
+#import "OSSClient.h"
+#import "OSSModel.h"
+#import "OSSUtil.h"
+#import "OSSLog.h"
+
+#import "OSSBolts.h"

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSTask/OSSBolts.h

@@ -0,0 +1,26 @@
+/*
+ *  Copyright (c) 2014, Facebook, Inc.
+ *  All rights reserved.
+ *
+ *  This source code is licensed under the BSD-style license found in the
+ *  LICENSE file in the root directory of this source tree. An additional grant
+ *  of patent rights can be found in the PATENTS file in the same directory.
+ *
+ */
+
+#import "OSSCancellationToken.h"
+#import "OSSCancellationTokenRegistration.h"
+#import "OSSCancellationTokenSource.h"
+#import "OSSExecutor.h"
+#import "OSSTask.h"
+#import "OSSTaskCompletionSource.h"
+
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+ A string containing the version of the Bolts Framework used by the current application.
+ */
+extern NSString *const OSSBoltsFrameworkVersionString;
+
+NS_ASSUME_NONNULL_END

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSTask/OSSBolts.m

@@ -0,0 +1,17 @@
+/*
+ *  Copyright (c) 2014, Facebook, Inc.
+ *  All rights reserved.
+ *
+ *  This source code is licensed under the BSD-style license found in the
+ *  LICENSE file in the root directory of this source tree. An additional grant
+ *  of patent rights can be found in the PATENTS file in the same directory.
+ *
+ */
+
+#import "OSSBolts.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+NSString *const OSSBoltsFrameworkVersionString = @"1.7.0";
+
+NS_ASSUME_NONNULL_END

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSTask/OSSCancellationToken.h

@@ -0,0 +1,42 @@
+/*
+ *  Copyright (c) 2014, Facebook, Inc.
+ *  All rights reserved.
+ *
+ *  This source code is licensed under the BSD-style license found in the
+ *  LICENSE file in the root directory of this source tree. An additional grant
+ *  of patent rights can be found in the PATENTS file in the same directory.
+ *
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "OSSCancellationTokenRegistration.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/*!
+ A block that will be called when a token is cancelled.
+ */
+typedef void(^OSSCancellationBlock)(void);
+
+/*!
+ The consumer view of a CancellationToken.
+ Propagates notification that operations should be canceled.
+ A OSSCancellationToken has methods to inspect whether the token has been cancelled.
+ */
+@interface OSSCancellationToken : NSObject
+
+/*!
+ Whether cancellation has been requested for this token source.
+ */
+@property (nonatomic, assign, readonly, getter=isCancellationRequested) BOOL cancellationRequested;
+
+/*!
+ Register a block to be notified when the token is cancelled.
+ If the token is already cancelled the delegate will be notified immediately.
+ */
+- (OSSCancellationTokenRegistration *)registerCancellationObserverWithBlock:(OSSCancellationBlock)block;
+
+@end
+
+NS_ASSUME_NONNULL_END

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSTask/OSSCancellationToken.m

@@ -0,0 +1,144 @@
+/*
+ *  Copyright (c) 2014, Facebook, Inc.
+ *  All rights reserved.
+ *
+ *  This source code is licensed under the BSD-style license found in the
+ *  LICENSE file in the root directory of this source tree. An additional grant
+ *  of patent rights can be found in the PATENTS file in the same directory.
+ *
+ */
+
+#import "OSSCancellationToken.h"
+#import "OSSCancellationTokenRegistration.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface OSSCancellationToken ()
+
+@property (nullable, nonatomic, strong) NSMutableArray *registrations;
+@property (nonatomic, strong) NSObject *lock;
+@property (nonatomic) BOOL disposed;
+
+@end
+
+@interface OSSCancellationTokenRegistration (OSSCancellationToken)
+
++ (instancetype)registrationWithToken:(OSSCancellationToken *)token delegate:(OSSCancellationBlock)delegate;
+
+- (void)notifyDelegate;
+
+@end
+
+@implementation OSSCancellationToken
+
+@synthesize cancellationRequested = _cancellationRequested;
+
+#pragma mark - Initializer
+
+- (instancetype)init {
+    self = [super init];
+    if (!self) return self;
+
+    _registrations = [NSMutableArray array];
+    _lock = [NSObject new];
+
+    return self;
+}
+
+#pragma mark - Custom Setters/Getters
+
+- (BOOL)isCancellationRequested {
+    @synchronized(self.lock) {
+        [self throwIfDisposed];
+        return _cancellationRequested;
+    }
+}
+
+- (void)cancel {
+    NSArray *registrations;
+    @synchronized(self.lock) {
+        [self throwIfDisposed];
+        if (_cancellationRequested) {
+            return;
+        }
+        [NSObject cancelPreviousPerformRequestsWithTarget:self selector:@selector(cancelPrivate) object:nil];
+        _cancellationRequested = YES;
+        registrations = [self.registrations copy];
+    }
+
+    [self notifyCancellation:registrations];
+}
+
+- (void)notifyCancellation:(NSArray *)registrations {
+    for (OSSCancellationTokenRegistration *registration in registrations) {
+        [registration notifyDelegate];
+    }
+}
+
+- (OSSCancellationTokenRegistration *)registerCancellationObserverWithBlock:(OSSCancellationBlock)block {
+    @synchronized(self.lock) {
+        OSSCancellationTokenRegistration *registration = [OSSCancellationTokenRegistration registrationWithToken:self delegate:[block copy]];
+        [self.registrations addObject:registration];
+
+        return registration;
+    }
+}
+
+- (void)unregisterRegistration:(OSSCancellationTokenRegistration *)registration {
+    @synchronized(self.lock) {
+        [self throwIfDisposed];
+        [self.registrations removeObject:registration];
+    }
+}
+
+// Delay on a non-public method to prevent interference with a user calling performSelector or
+// cancelPreviousPerformRequestsWithTarget on the public method
+- (void)cancelPrivate {
+    [self cancel];
+}
+
+- (void)cancelAfterDelay:(int)millis {
+    [self throwIfDisposed];
+    if (millis < -1) {
+        [NSException raise:NSInvalidArgumentException format:@"Delay must be >= -1"];
+    }
+
+    if (millis == 0) {
+        [self cancel];
+        return;
+    }
+
+    @synchronized(self.lock) {
+        [self throwIfDisposed];
+        [NSObject cancelPreviousPerformRequestsWithTarget:self selector:@selector(cancelPrivate) object:nil];
+        if (self.cancellationRequested) {
+            return;
+        }
+
+        if (millis != -1) {
+            double delay = (double)millis / 1000;
+            [self performSelector:@selector(cancelPrivate) withObject:nil afterDelay:delay];
+        }
+    }
+}
+
+- (void)dispose {
+    @synchronized(self.lock) {
+        if (self.disposed) {
+            return;
+        }
+        [self.registrations makeObjectsPerformSelector:@selector(dispose)];
+        self.registrations = nil;
+        self.disposed = YES;
+    }
+}
+
+- (void)throwIfDisposed {
+    if (self.disposed) {
+        [NSException raise:NSInternalInconsistencyException format:@"Object already disposed"];
+    }
+}
+
+@end
+
+NS_ASSUME_NONNULL_END

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSTask/OSSCancellationTokenRegistration.h

@@ -0,0 +1,29 @@
+/*
+ *  Copyright (c) 2014, Facebook, Inc.
+ *  All rights reserved.
+ *
+ *  This source code is licensed under the BSD-style license found in the
+ *  LICENSE file in the root directory of this source tree. An additional grant
+ *  of patent rights can be found in the PATENTS file in the same directory.
+ *
+ */
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/*!
+ Represents the registration of a cancellation observer with a cancellation token.
+ Can be used to unregister the observer at a later time.
+ */
+@interface OSSCancellationTokenRegistration : NSObject
+
+/*!
+ Removes the cancellation observer registered with the token
+ and releases all resources associated with this registration.
+ */
+- (void)dispose;
+
+@end
+
+NS_ASSUME_NONNULL_END

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSTask/OSSCancellationTokenRegistration.m

@@ -0,0 +1,79 @@
+/*
+ *  Copyright (c) 2014, Facebook, Inc.
+ *  All rights reserved.
+ *
+ *  This source code is licensed under the BSD-style license found in the
+ *  LICENSE file in the root directory of this source tree. An additional grant
+ *  of patent rights can be found in the PATENTS file in the same directory.
+ *
+ */
+
+#import "OSSCancellationTokenRegistration.h"
+
+#import "OSSCancellationToken.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface OSSCancellationTokenRegistration ()
+
+@property (nonatomic, weak) OSSCancellationToken *token;
+@property (nullable, nonatomic, strong) OSSCancellationBlock cancellationObserverBlock;
+@property (nonatomic, strong) NSObject *lock;
+@property (nonatomic) BOOL disposed;
+
+@end
+
+@interface OSSCancellationToken (OSSCancellationTokenRegistration)
+
+- (void)unregisterRegistration:(OSSCancellationTokenRegistration *)registration;
+
+@end
+
+@implementation OSSCancellationTokenRegistration
+
++ (instancetype)registrationWithToken:(OSSCancellationToken *)token delegate:(OSSCancellationBlock)delegate {
+    OSSCancellationTokenRegistration *registration = [OSSCancellationTokenRegistration new];
+    registration.token = token;
+    registration.cancellationObserverBlock = delegate;
+    return registration;
+}
+
+- (instancetype)init {
+    self = [super init];
+    if (!self) return self;
+
+    _lock = [NSObject new];
+    
+    return self;
+}
+
+- (void)dispose {
+    @synchronized(self.lock) {
+        if (self.disposed) {
+            return;
+        }
+        self.disposed = YES;
+    }
+
+    OSSCancellationToken *token = self.token;
+    if (token != nil) {
+        [token unregisterRegistration:self];
+        self.token = nil;
+    }
+    self.cancellationObserverBlock = nil;
+}
+
+- (void)notifyDelegate {
+    @synchronized(self.lock) {
+        [self throwIfDisposed];
+        self.cancellationObserverBlock();
+    }
+}
+
+- (void)throwIfDisposed {
+    NSAssert(!self.disposed, @"Object already disposed");
+}
+
+@end
+
+NS_ASSUME_NONNULL_END

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSTask/OSSCancellationTokenSource.h

@@ -0,0 +1,60 @@
+/*
+ *  Copyright (c) 2014, Facebook, Inc.
+ *  All rights reserved.
+ *
+ *  This source code is licensed under the BSD-style license found in the
+ *  LICENSE file in the root directory of this source tree. An additional grant
+ *  of patent rights can be found in the PATENTS file in the same directory.
+ *
+ */
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@class OSSCancellationToken;
+
+/*!
+ OSSCancellationTokenSource represents the producer side of a CancellationToken.
+ Signals to a CancellationToken that it should be canceled.
+ It is a cancellation token that also has methods
+ for changing the state of a token by cancelling it.
+ */
+@interface OSSCancellationTokenSource : NSObject
+
+/*!
+ Creates a new cancellation token source.
+ */
++ (instancetype)cancellationTokenSource;
+
+/*!
+ The cancellation token associated with this CancellationTokenSource.
+ */
+@property (nonatomic, strong, readonly) OSSCancellationToken *token;
+
+/*!
+ Whether cancellation has been requested for this token source.
+ */
+@property (nonatomic, assign, readonly, getter=isCancellationRequested) BOOL cancellationRequested;
+
+/*!
+ Cancels the token if it has not already been cancelled.
+ */
+- (void)cancel;
+
+/*!
+ Schedules a cancel operation on this CancellationTokenSource after the specified number of milliseconds.
+ @param millis The number of milliseconds to wait before completing the returned task.
+ If delay is `0` the cancel is executed immediately. If delay is `-1` any scheduled cancellation is stopped.
+ */
+- (void)cancelAfterDelay:(int)millis;
+
+/*!
+ Releases all resources associated with this token source,
+ including disposing of all registrations.
+ */
+- (void)dispose;
+
+@end
+
+NS_ASSUME_NONNULL_END

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSTask/OSSCancellationTokenSource.m

@@ -0,0 +1,64 @@
+/*
+ *  Copyright (c) 2014, Facebook, Inc.
+ *  All rights reserved.
+ *
+ *  This source code is licensed under the BSD-style license found in the
+ *  LICENSE file in the root directory of this source tree. An additional grant
+ *  of patent rights can be found in the PATENTS file in the same directory.
+ *
+ */
+
+#import "OSSCancellationTokenSource.h"
+
+#import "OSSCancellationToken.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface OSSCancellationToken (OSSCancellationTokenSource)
+
+- (void)cancel;
+- (void)cancelAfterDelay:(int)millis;
+
+- (void)dispose;
+- (void)throwIfDisposed;
+
+@end
+
+@implementation OSSCancellationTokenSource
+
+#pragma mark - Initializer
+
+- (instancetype)init {
+    self = [super init];
+    if (!self) return self;
+
+    _token = [OSSCancellationToken new];
+
+    return self;
+}
+
++ (instancetype)cancellationTokenSource {
+    return [OSSCancellationTokenSource new];
+}
+
+#pragma mark - Custom Setters/Getters
+
+- (BOOL)isCancellationRequested {
+    return _token.isCancellationRequested;
+}
+
+- (void)cancel {
+    [_token cancel];
+}
+
+- (void)cancelAfterDelay:(int)millis {
+    [_token cancelAfterDelay:millis];
+}
+
+- (void)dispose {
+    [_token dispose];
+}
+
+@end
+
+NS_ASSUME_NONNULL_END

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSTask/OSSExecutor.h

@@ -0,0 +1,62 @@
+/*
+ *  Copyright (c) 2014, Facebook, Inc.
+ *  All rights reserved.
+ *
+ *  This source code is licensed under the BSD-style license found in the
+ *  LICENSE file in the root directory of this source tree. An additional grant
+ *  of patent rights can be found in the PATENTS file in the same directory.
+ *
+ */
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/*!
+ An object that can run a given block.
+ */
+@interface OSSExecutor : NSObject
+
+/*!
+ Returns a default executor, which runs continuations immediately until the call stack gets too
+ deep, then dispatches to a new GCD queue.
+ */
++ (instancetype)defaultExecutor;
+
+/*!
+ Returns an executor that runs continuations on the thread where the previous task was completed.
+ */
++ (instancetype)immediateExecutor;
+
+/*!
+ Returns an executor that runs continuations on the main thread.
+ */
++ (instancetype)mainThreadExecutor;
+
+/*!
+ Returns a new executor that uses the given block to execute continuations.
+ @param block The block to use.
+ */
++ (instancetype)executorWithBlock:(void(^)(void(^block)(void)))block;
+
+/*!
+ Returns a new executor that runs continuations on the given queue.
+ @param queue The instance of `dispatch_queue_t` to dispatch all continuations onto.
+ */
++ (instancetype)executorWithDispatchQueue:(dispatch_queue_t)queue;
+
+/*!
+ Returns a new executor that runs continuations on the given queue.
+ @param queue The instance of `NSOperationQueue` to run all continuations on.
+ */
++ (instancetype)executorWithOperationQueue:(NSOperationQueue *)queue;
+
+/*!
+ Runs the given block using this executor's particular strategy.
+ @param block The block to execute.
+ */
+- (void)execute:(void(^)(void))block;
+
+@end
+
+NS_ASSUME_NONNULL_END

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSTask/OSSExecutor.m

@@ -0,0 +1,136 @@
+/*
+ *  Copyright (c) 2014, Facebook, Inc.
+ *  All rights reserved.
+ *
+ *  This source code is licensed under the BSD-style license found in the
+ *  LICENSE file in the root directory of this source tree. An additional grant
+ *  of patent rights can be found in the PATENTS file in the same directory.
+ *
+ */
+
+#import "OSSExecutor.h"
+
+#import <pthread.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/*!
+ Get the remaining stack-size of the current thread.
+
+ @param totalSize The total stack size of the current thread.
+
+ @return The remaining size, in bytes, available to the current thread.
+
+ @note This function cannot be inlined, as otherwise the internal implementation could fail to report the proper
+ remaining stack space.
+ */
+__attribute__((noinline)) static size_t remaining_stack_size(size_t *restrict totalSize) {
+    pthread_t currentThread = pthread_self();
+
+    // NOTE: We must store stack pointers as uint8_t so that the pointer math is well-defined
+    uint8_t *endStack = pthread_get_stackaddr_np(currentThread);
+    *totalSize = pthread_get_stacksize_np(currentThread);
+
+    // NOTE: If the function is inlined, this value could be incorrect
+    uint8_t *frameAddr = __builtin_frame_address(0);
+
+    return (*totalSize) - (endStack - frameAddr);
+}
+
+@interface OSSExecutor ()
+
+@property (nonatomic, copy) void(^block)(void(^block)(void));
+
+@end
+
+@implementation OSSExecutor
+
+#pragma mark - Executor methods
+
++ (instancetype)defaultExecutor {
+    static OSSExecutor *defaultExecutor = NULL;
+    static dispatch_once_t onceToken;
+    dispatch_once(&onceToken, ^{
+        defaultExecutor = [self executorWithBlock:^void(void(^block)(void)) {
+            // We prefer to run everything possible immediately, so that there is callstack information
+            // when debugging. However, we don't want the stack to get too deep, so if the remaining stack space
+            // is less than 10% of the total space, we dispatch to another GCD queue.
+            size_t totalStackSize = 0;
+            size_t remainingStackSize = remaining_stack_size(&totalStackSize);
+
+            if (remainingStackSize < (totalStackSize / 10)) {
+                dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), block);
+            } else {
+                @autoreleasepool {
+                    block();
+                }
+            }
+        }];
+    });
+    return defaultExecutor;
+}
+
++ (instancetype)immediateExecutor {
+    static OSSExecutor *immediateExecutor = NULL;
+    static dispatch_once_t onceToken;
+    dispatch_once(&onceToken, ^{
+        immediateExecutor = [self executorWithBlock:^void(void(^block)(void)) {
+            block();
+        }];
+    });
+    return immediateExecutor;
+}
+
++ (instancetype)mainThreadExecutor {
+    static OSSExecutor *mainThreadExecutor = NULL;
+    static dispatch_once_t onceToken;
+    dispatch_once(&onceToken, ^{
+        mainThreadExecutor = [self executorWithBlock:^void(void(^block)(void)) {
+            if (![NSThread isMainThread]) {
+                dispatch_async(dispatch_get_main_queue(), block);
+            } else {
+                @autoreleasepool {
+                    block();
+                }
+            }
+        }];
+    });
+    return mainThreadExecutor;
+}
+
++ (instancetype)executorWithBlock:(void(^)(void(^block)(void)))block {
+    return [[self alloc] initWithBlock:block];
+}
+
++ (instancetype)executorWithDispatchQueue:(dispatch_queue_t)queue {
+    return [self executorWithBlock:^void(void(^block)(void)) {
+        dispatch_async(queue, block);
+    }];
+}
+
++ (instancetype)executorWithOperationQueue:(NSOperationQueue *)queue {
+    return [self executorWithBlock:^void(void(^block)(void)) {
+        [queue addOperation:[NSBlockOperation blockOperationWithBlock:block]];
+    }];
+}
+
+#pragma mark - Initializer
+
+- (instancetype)initWithBlock:(void(^)(void(^block)(void)))block {
+    self = [super init];
+    if (!self) return self;
+
+    _block = block;
+
+    return self;
+}
+
+#pragma mark - Execution
+
+- (void)execute:(void(^)(void))block {
+    self.block(block);
+}
+
+@end
+
+NS_ASSUME_NONNULL_END

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSTask/OSSTask.h

@@ -0,0 +1,295 @@
+/*
+ *  Copyright (c) 2014, Facebook, Inc.
+ *  All rights reserved.
+ *
+ *  This source code is licensed under the BSD-style license found in the
+ *  LICENSE file in the root directory of this source tree. An additional grant
+ *  of patent rights can be found in the PATENTS file in the same directory.
+ *
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "OSSCancellationToken.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/*!
+ Error domain used if there was multiple errors on <OSSTask taskForCompletionOfAllTasks:>.
+ */
+extern NSString *const OSSTaskErrorDomain;
+
+/*!
+ An error code used for <OSSTask taskForCompletionOfAllTasks:>, if there were multiple errors.
+ */
+extern NSInteger const kOSSMultipleErrorsError;
+
+/*!
+ An exception that is thrown if there was multiple exceptions on <OSSTask taskForCompletionOfAllTasks:>.
+ */
+extern NSString *const OSSTaskMultipleExceptionsException;
+
+/*!
+ An error userInfo key used if there were multiple errors on <OSSTask taskForCompletionOfAllTasks:>.
+ Value type is `NSArray<NSError *> *`.
+ */
+extern NSString *const OSSTaskMultipleErrorsUserInfoKey;
+
+/*!
+ An error userInfo key used if there were multiple exceptions on <OSSTask taskForCompletionOfAllTasks:>.
+ Value type is `NSArray<NSException *> *`.
+ */
+extern NSString *const OSSTaskMultipleExceptionsUserInfoKey;
+
+@class OSSExecutor;
+@class OSSTask;
+
+/*!
+ The consumer view of a Task. A OSSTask has methods to
+ inspect the state of the task, and to add continuations to
+ be run once the task is complete.
+ */
+@interface OSSTask<__covariant ResultType> : NSObject
+
+/*!
+ A block that can act as a continuation for a task.
+ */
+typedef __nullable id(^OSSContinuationBlock)(OSSTask<ResultType> *task);
+
+/*!
+ Creates a task that is already completed with the given result.
+ @param result The result for the task.
+ */
++ (instancetype)taskWithResult:(_Nullable ResultType)result;
+
+/*!
+ Creates a task that is already completed with the given error.
+ @param error The error for the task.
+ */
++ (instancetype)taskWithError:(NSError *)error;
+
+/*!
+ Creates a task that is already completed with the given exception.
+ @param exception The exception for the task.
+ */
++ (instancetype)taskWithException:(NSException *)exception;
+
+/*!
+ Creates a task that is already cancelled.
+ */
++ (instancetype)cancelledTask;
+
+/*!
+ Returns a task that will be completed (with result == nil) once
+ all of the input tasks have completed.
+ @param tasks An `NSArray` of the tasks to use as an input.
+ */
++ (instancetype)taskForCompletionOfAllTasks:(nullable NSArray<OSSTask *> *)tasks;
+
+/*!
+ Returns a task that will be completed once all of the input tasks have completed.
+ If all tasks complete successfully without being faulted or cancelled the result will be
+ an `NSArray` of all task results in the order they were provided.
+ @param tasks An `NSArray` of the tasks to use as an input.
+ */
++ (instancetype)taskForCompletionOfAllTasksWithResults:(nullable NSArray<OSSTask *> *)tasks;
+
+/*!
+ Returns a task that will be completed once there is at least one successful task.
+ The first task to successuly complete will set the result, all other tasks results are 
+ ignored.
+ @param tasks An `NSArray` of the tasks to use as an input.
+ */
++ (instancetype)taskForCompletionOfAnyTask:(nullable NSArray<OSSTask *> *)tasks;
+
+/*!
+ Returns a task that will be completed a certain amount of time in the future.
+ @param millis The approximate number of milliseconds to wait before the
+ task will be finished (with result == nil).
+ */
++ (instancetype)taskWithDelay:(int)millis;
+
+/*!
+ Returns a task that will be completed a certain amount of time in the future.
+ @param millis The approximate number of milliseconds to wait before the
+ task will be finished (with result == nil).
+ @param token The cancellation token (optional).
+ */
++ (instancetype)taskWithDelay:(int)millis cancellationToken:(nullable OSSCancellationToken *)token;
+
+/*!
+ Returns a task that will be completed after the given block completes with
+ the specified executor.
+ @param executor A OSSExecutor responsible for determining how the
+ continuation block will be run.
+ @param block The block to immediately schedule to run with the given executor.
+ @returns A task that will be completed after block has run.
+ If block returns a OSSTask, then the task returned from
+ this method will not be completed until that task is completed.
+ */
++ (instancetype)taskFromExecutor:(OSSExecutor *)executor withBlock:(nullable id (^)(void))block;
+
+// Properties that will be set on the task once it is completed.
+
+/*!
+ The result of a successful task.
+ */
+@property (nullable, nonatomic, strong, readonly) ResultType result;
+
+/*!
+ The error of a failed task.
+ */
+@property (nullable, nonatomic, strong, readonly) NSError *error;
+
+/*!
+ The exception of a failed task.
+ */
+@property (nullable, nonatomic, strong, readonly) NSException *exception;
+
+/*!
+ Whether this task has been cancelled.
+ */
+@property (nonatomic, assign, readonly, getter=isCancelled) BOOL cancelled;
+
+/*!
+ Whether this task has completed due to an error or exception.
+ */
+@property (nonatomic, assign, readonly, getter=isFaulted) BOOL faulted;
+
+/*!
+ Whether this task has completed.
+ */
+@property (nonatomic, assign, readonly, getter=isCompleted) BOOL completed;
+
+/*!
+ Enqueues the given block to be run once this task is complete.
+ This method uses a default execution strategy. The block will be
+ run on the thread where the previous task completes, unless the
+ the stack depth is too deep, in which case it will be run on a
+ dispatch queue with default priority.
+ @param block The block to be run once this task is complete.
+ @returns A task that will be completed after block has run.
+ If block returns a OSSTask, then the task returned from
+ this method will not be completed until that task is completed.
+ */
+- (OSSTask *)continueWithBlock:(OSSContinuationBlock)block;
+
+/*!
+ Enqueues the given block to be run once this task is complete.
+ This method uses a default execution strategy. The block will be
+ run on the thread where the previous task completes, unless the
+ the stack depth is too deep, in which case it will be run on a
+ dispatch queue with default priority.
+ @param block The block to be run once this task is complete.
+ @param cancellationToken The cancellation token (optional).
+ @returns A task that will be completed after block has run.
+ If block returns a OSSTask, then the task returned from
+ this method will not be completed until that task is completed.
+ */
+- (OSSTask *)continueWithBlock:(OSSContinuationBlock)block cancellationToken:(nullable OSSCancellationToken *)cancellationToken;
+
+/*!
+ Enqueues the given block to be run once this task is complete.
+ @param executor A OSSExecutor responsible for determining how the
+ continuation block will be run.
+ @param block The block to be run once this task is complete.
+ @returns A task that will be completed after block has run.
+ If block returns a OSSTask, then the task returned from
+ this method will not be completed until that task is completed.
+ */
+- (OSSTask *)continueWithExecutor:(OSSExecutor *)executor withBlock:(OSSContinuationBlock)block;
+/*!
+ Enqueues the given block to be run once this task is complete.
+ @param executor A OSSExecutor responsible for determining how the
+ continuation block will be run.
+ @param block The block to be run once this task is complete.
+ @param cancellationToken The cancellation token (optional).
+ @returns A task that will be completed after block has run.
+ If block returns a OSSTask, then the task returned from
+ his method will not be completed until that task is completed.
+ */
+- (OSSTask *)continueWithExecutor:(OSSExecutor *)executor
+                           block:(OSSContinuationBlock)block
+               cancellationToken:(nullable OSSCancellationToken *)cancellationToken;
+
+/*!
+ Identical to continueWithBlock:, except that the block is only run
+ if this task did not produce a cancellation, error, or exception.
+ If it did, then the failure will be propagated to the returned
+ task.
+ @param block The block to be run once this task is complete.
+ @returns A task that will be completed after block has run.
+ If block returns a OSSTask, then the task returned from
+ this method will not be completed until that task is completed.
+ */
+- (OSSTask *)continueWithSuccessBlock:(OSSContinuationBlock)block;
+
+/*!
+ Identical to continueWithBlock:, except that the block is only run
+ if this task did not produce a cancellation, error, or exception.
+ If it did, then the failure will be propagated to the returned
+ task.
+ @param block The block to be run once this task is complete.
+ @param cancellationToken The cancellation token (optional).
+ @returns A task that will be completed after block has run.
+ If block returns a OSSTask, then the task returned from
+ this method will not be completed until that task is completed.
+ */
+- (OSSTask *)continueWithSuccessBlock:(OSSContinuationBlock)block cancellationToken:(nullable OSSCancellationToken *)cancellationToken;
+
+/*!
+ Identical to continueWithExecutor:withBlock:, except that the block
+ is only run if this task did not produce a cancellation, error, or
+ exception. If it did, then the failure will be propagated to the
+ returned task.
+ @param executor A OSSExecutor responsible for determining how the
+ continuation block will be run.
+ @param block The block to be run once this task is complete.
+ @returns A task that will be completed after block has run.
+ If block returns a OSSTask, then the task returned from
+ this method will not be completed until that task is completed.
+ */
+- (OSSTask *)continueWithExecutor:(OSSExecutor *)executor withSuccessBlock:(OSSContinuationBlock)block;
+
+/*!
+ Identical to continueWithExecutor:withBlock:, except that the block
+ is only run if this task did not produce a cancellation, error, or
+ exception. If it did, then the failure will be propagated to the
+ returned task.
+ @param executor A OSSExecutor responsible for determining how the
+ continuation block will be run.
+ @param block The block to be run once this task is complete.
+ @param cancellationToken The cancellation token (optional).
+ @returns A task that will be completed after block has run.
+ If block returns a OSSTask, then the task returned from
+ this method will not be completed until that task is completed.
+ */
+- (OSSTask *)continueWithExecutor:(OSSExecutor *)executor
+                    successBlock:(OSSContinuationBlock)block
+               cancellationToken:(nullable OSSCancellationToken *)cancellationToken;
+
+/*!
+ Waits until this operation is completed.
+ This method is inefficient and consumes a thread resource while
+ it's running. It should be avoided. This method logs a warning
+ message if it is used on the main thread.
+ */
+- (void)waitUntilFinished;
+
+@end
+
+@class OSSResult;
+
+@interface OSSTask(OSS)
+
+typedef void(^OSSCompleteBlock)(BOOL isSuccess, NSError * _Nullable error, OSSResult * _Nullable result);
+
+- (BOOL)isSuccessful;
+
+- (NSError *)toError;
+
+- (OSSTask *)completed:(OSSCompleteBlock)block;
+
+@end
+
+NS_ASSUME_NONNULL_END

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSTask/OSSTask.m

@@ -0,0 +1,584 @@
+/*
+ *  Copyright (c) 2014, Facebook, Inc.
+ *  All rights reserved.
+ *
+ *  This source code is licensed under the BSD-style license found in the
+ *  LICENSE file in the root directory of this source tree. An additional grant
+ *  of patent rights can be found in the PATENTS file in the same directory.
+ *
+ */
+
+#import "OSSTask.h"
+#import "OSSLog.h"
+#import "OSSConstants.h"
+#import "OSSDefine.h"
+
+#import <libkern/OSAtomic.h>
+
+#import "OSSBolts.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+__attribute__ ((noinline)) void ossWarnBlockingOperationOnMainThread() {
+    NSLog(@"Warning: A long-running operation is being executed on the main thread. \n"
+          " Break on warnBlockingOperationOnMainThread() to debug.");
+}
+
+NSString *const OSSTaskErrorDomain = @"bolts";
+NSInteger const kOSSMultipleErrorsError = 80175001;
+NSString *const OSSTaskMultipleExceptionsException = @"OSSMultipleExceptionsException";
+
+NSString *const OSSTaskMultipleErrorsUserInfoKey = @"errors";
+NSString *const OSSTaskMultipleExceptionsUserInfoKey = @"exceptions";
+
+@interface OSSTask () {
+    id _result;
+    NSError *_error;
+    NSException *_exception;
+}
+
+@property (nonatomic, assign, readwrite, getter=isCancelled) BOOL cancelled;
+@property (nonatomic, assign, readwrite, getter=isFaulted) BOOL faulted;
+@property (nonatomic, assign, readwrite, getter=isCompleted) BOOL completed;
+
+@property (nonatomic, strong) NSObject *lock;
+@property (nonatomic, strong) NSCondition *condition;
+@property (nonatomic, strong) NSMutableArray *callbacks;
+
+@end
+
+@implementation OSSTask
+
+#pragma mark - Initializer
+
+- (instancetype)init {
+    self = [super init];
+    if (!self) return self;
+
+    _lock = [[NSObject alloc] init];
+    _condition = [[NSCondition alloc] init];
+    _callbacks = [NSMutableArray array];
+
+    return self;
+}
+
+- (instancetype)initWithResult:(_Nullable id)result {
+    self = [super init];
+    if (self) {
+        [self trySetResult:result];
+    }
+    return self;
+}
+
+- (instancetype)initWithError:(NSError *)error {
+    self = [super init];
+    if (!self) return self;
+
+    [self trySetError:error];
+
+    return self;
+}
+
+- (instancetype)initWithException:(NSException *)exception {
+    self = [super init];
+    if (!self) return self;
+
+    [self trySetException:exception];
+
+    return self;
+}
+
+- (instancetype)initCancelled {
+    self = [super init];
+    if (!self) return self;
+
+    [self trySetCancelled];
+
+    return self;
+}
+
+#pragma mark - Task Class methods
+
++ (instancetype)taskWithResult:(_Nullable id)result {
+    return [[self alloc] initWithResult:result];
+}
+
++ (instancetype)taskWithError:(NSError *)error {
+    return [[self alloc] initWithError:error];
+}
+
++ (instancetype)taskWithException:(NSException *)exception {
+    return [[self alloc] initWithException:exception];
+}
+
++ (instancetype)cancelledTask {
+    return [[self alloc] initCancelled];
+}
+
++ (instancetype)taskForCompletionOfAllTasks:(nullable NSArray<OSSTask *> *)tasks {
+    __block int32_t total = (int32_t)tasks.count;
+    if (total == 0) {
+        return [self taskWithResult:nil];
+    }
+
+    __block int32_t cancelled = 0;
+    NSObject *lock = [[NSObject alloc] init];
+    NSMutableArray *errors = [NSMutableArray array];
+    NSMutableArray *exceptions = [NSMutableArray array];
+
+    OSSTaskCompletionSource *tcs = [OSSTaskCompletionSource taskCompletionSource];
+    for (OSSTask *task in tasks) {
+        [task continueWithBlock:^id(OSSTask *task) {
+            if (task.exception) {
+                @synchronized (lock) {
+                    [exceptions addObject:task.exception];
+                }
+            } else if (task.error) {
+                @synchronized (lock) {
+                    [errors addObject:task.error];
+                }
+            } else if (task.cancelled) {
+                OSAtomicIncrement32Barrier(&cancelled);
+            }
+
+            if (OSAtomicDecrement32Barrier(&total) == 0) {
+                if (exceptions.count > 0) {
+                    if (exceptions.count == 1) {
+                        tcs.exception = [exceptions firstObject];
+                    } else {
+                        NSException *exception =
+                        [NSException exceptionWithName:OSSTaskMultipleExceptionsException
+                                                reason:@"There were multiple exceptions."
+                                              userInfo:@{ OSSTaskMultipleExceptionsUserInfoKey: exceptions }];
+                        tcs.exception = exception;
+                    }
+                } else if (errors.count > 0) {
+                    if (errors.count == 1) {
+                        tcs.error = [errors firstObject];
+                    } else {
+                        NSError *error = [NSError errorWithDomain:OSSTaskErrorDomain
+                                                             code:kOSSMultipleErrorsError
+                                                         userInfo:@{ OSSTaskMultipleErrorsUserInfoKey: errors }];
+                        tcs.error = error;
+                    }
+                } else if (cancelled > 0) {
+                    [tcs cancel];
+                } else {
+                    tcs.result = nil;
+                }
+            }
+            return nil;
+        }];
+    }
+    return tcs.task;
+}
+
++ (instancetype)taskForCompletionOfAllTasksWithResults:(nullable NSArray<OSSTask *> *)tasks {
+    return [[self taskForCompletionOfAllTasks:tasks] continueWithSuccessBlock:^id(OSSTask *task) {
+        return [tasks valueForKey:@"result"];
+    }];
+}
+
++ (instancetype)taskForCompletionOfAnyTask:(nullable NSArray<OSSTask *> *)tasks
+{
+    __block int32_t total = (int32_t)tasks.count;
+    if (total == 0) {
+        return [self taskWithResult:nil];
+    }
+    
+    __block int completed = 0;
+    __block int32_t cancelled = 0;
+    
+    NSObject *lock = [NSObject new];
+    NSMutableArray<NSError *> *errors = [NSMutableArray new];
+    NSMutableArray<NSException *> *exceptions = [NSMutableArray new];
+    
+    OSSTaskCompletionSource *source = [OSSTaskCompletionSource taskCompletionSource];
+    for (OSSTask *task in tasks) {
+        [task continueWithBlock:^id(OSSTask *task) {
+            if (task.exception != nil) {
+                @synchronized(lock) {
+                    [exceptions addObject:task.exception];
+                }
+            } else if (task.error != nil) {
+                @synchronized(lock) {
+                    [errors addObject:task.error];
+                }
+            } else if (task.cancelled) {
+                OSAtomicIncrement32Barrier(&cancelled);
+            } else {
+                if(OSAtomicCompareAndSwap32Barrier(0, 1, &completed)) {
+                    [source setResult:task.result];
+                }
+            }
+            
+            if (OSAtomicDecrement32Barrier(&total) == 0 &&
+                OSAtomicCompareAndSwap32Barrier(0, 1, &completed)) {
+                if (cancelled > 0) {
+                    [source cancel];
+                } else if (exceptions.count > 0) {
+                    if (exceptions.count == 1) {
+                        source.exception = exceptions.firstObject;
+                    } else {
+                        NSException *exception =
+                        [NSException exceptionWithName:OSSTaskMultipleExceptionsException
+                                                reason:@"There were multiple exceptions."
+                                              userInfo:@{ @"exceptions": exceptions }];
+                        source.exception = exception;
+                    }
+                } else if (errors.count > 0) {
+                    if (errors.count == 1) {
+                        source.error = errors.firstObject;
+                    } else {
+                        NSError *error = [NSError errorWithDomain:OSSTaskErrorDomain
+                                                             code:kOSSMultipleErrorsError
+                                                         userInfo:@{ @"errors": errors }];
+                        source.error = error;
+                    }
+                }
+            }
+            // Abort execution of per tasks continuations
+            return nil;
+        }];
+    }
+    return source.task;
+}
+
+
++ (instancetype)taskWithDelay:(int)millis {
+    OSSTaskCompletionSource *tcs = [OSSTaskCompletionSource taskCompletionSource];
+    dispatch_time_t popTime = dispatch_time(DISPATCH_TIME_NOW, millis * NSEC_PER_MSEC);
+    dispatch_after(popTime, dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^(void){
+        tcs.result = nil;
+    });
+    return tcs.task;
+}
+
++ (instancetype)taskWithDelay:(int)millis cancellationToken:(nullable OSSCancellationToken *)token {
+    if (token.cancellationRequested) {
+        return [OSSTask cancelledTask];
+    }
+
+    OSSTaskCompletionSource *tcs = [OSSTaskCompletionSource taskCompletionSource];
+    dispatch_time_t popTime = dispatch_time(DISPATCH_TIME_NOW, millis * NSEC_PER_MSEC);
+    dispatch_after(popTime, dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^(void){
+        if (token.cancellationRequested) {
+            [tcs cancel];
+            return;
+        }
+        tcs.result = nil;
+    });
+    return tcs.task;
+}
+
++ (instancetype)taskFromExecutor:(OSSExecutor *)executor withBlock:(nullable id (^)(void))block {
+    return [[self taskWithResult:nil] continueWithExecutor:executor withBlock:^id(OSSTask *task) {
+        return block();
+    }];
+}
+
+#pragma mark - Custom Setters/Getters
+
+- (nullable id)result {
+    @synchronized(self.lock) {
+        return _result;
+    }
+}
+
+- (BOOL)trySetResult:(nullable id)result {
+    @synchronized(self.lock) {
+        if (self.completed) {
+            return NO;
+        }
+        self.completed = YES;
+        _result = result;
+        [self runContinuations];
+        return YES;
+    }
+}
+
+- (nullable NSError *)error {
+    @synchronized(self.lock) {
+        return _error;
+    }
+}
+
+- (BOOL)trySetError:(NSError *)error {
+    @synchronized(self.lock) {
+        if (self.completed) {
+            return NO;
+        }
+        self.completed = YES;
+        self.faulted = YES;
+        _error = error;
+        [self runContinuations];
+        return YES;
+    }
+}
+
+- (nullable NSException *)exception {
+    @synchronized(self.lock) {
+        return _exception;
+    }
+}
+
+- (BOOL)trySetException:(NSException *)exception {
+    @synchronized(self.lock) {
+        if (self.completed) {
+            return NO;
+        }
+        self.completed = YES;
+        self.faulted = YES;
+        _exception = exception;
+        [self runContinuations];
+        return YES;
+    }
+}
+
+- (BOOL)isCancelled {
+    @synchronized(self.lock) {
+        return _cancelled;
+    }
+}
+
+- (BOOL)isFaulted {
+    @synchronized(self.lock) {
+        return _faulted;
+    }
+}
+
+- (BOOL)trySetCancelled {
+    @synchronized(self.lock) {
+        if (self.completed) {
+            return NO;
+        }
+        self.completed = YES;
+        self.cancelled = YES;
+        [self runContinuations];
+        return YES;
+    }
+}
+
+- (BOOL)isCompleted {
+    @synchronized(self.lock) {
+        return _completed;
+    }
+}
+
+- (void)runContinuations {
+    @synchronized(self.lock) {
+        [self.condition lock];
+        [self.condition broadcast];
+        [self.condition unlock];
+        for (void (^callback)(void) in self.callbacks) {
+            callback();
+        }
+        [self.callbacks removeAllObjects];
+    }
+}
+
+#pragma mark - Chaining methods
+
+- (OSSTask *)continueWithExecutor:(OSSExecutor *)executor withBlock:(OSSContinuationBlock)block {
+    return [self continueWithExecutor:executor block:block cancellationToken:nil];
+}
+
+- (OSSTask *)continueWithExecutor:(OSSExecutor *)executor
+                           block:(OSSContinuationBlock)block
+               cancellationToken:(nullable OSSCancellationToken *)cancellationToken {
+    OSSTaskCompletionSource *tcs = [OSSTaskCompletionSource taskCompletionSource];
+
+    // Capture all of the state that needs to used when the continuation is complete.
+    dispatch_block_t executionBlock = ^{
+        if (cancellationToken.cancellationRequested) {
+            [tcs cancel];
+            return;
+        }
+
+        id result = nil;
+        @try {
+            result = block(self);
+        } @catch (NSException *exception) {
+            NSError *error = [NSError errorWithDomain:OSSClientErrorDomain
+                                                 code:OSSClientErrorCodeExcpetionCatched
+                                             userInfo:@{OSSErrorMessageTOKEN: [NSString stringWithFormat:@"Catch exception - %@", exception]}];
+            tcs.error = error;
+            OSSLogError(@"exception name: %@",[exception name]);
+            OSSLogError(@"exception reason: %@",[exception reason]);
+            return;
+        }
+
+        if ([result isKindOfClass:[OSSTask class]]) {
+
+            id (^setupWithTask) (OSSTask *) = ^id(OSSTask *task) {
+                if (cancellationToken.cancellationRequested || task.cancelled) {
+                    [tcs cancel];
+                } else if (task.exception) {
+                    NSError *error = [NSError errorWithDomain:OSSClientErrorDomain
+                                                         code:OSSClientErrorCodeExcpetionCatched
+                                                     userInfo:@{OSSErrorMessageTOKEN: [NSString stringWithFormat:@"Catch exception - %@", task.exception]}];
+                    tcs.error = error;
+                } else if (task.error) {
+                    tcs.error = task.error;
+                } else {
+                    tcs.result = task.result;
+                }
+                return nil;
+            };
+
+            OSSTask *resultTask = (OSSTask *)result;
+
+            if (resultTask.completed) {
+                setupWithTask(resultTask);
+            } else {
+                [resultTask continueWithBlock:setupWithTask];
+            }
+
+        } else {
+            tcs.result = result;
+        }
+    };
+
+    BOOL completed;
+    @synchronized(self.lock) {
+        completed = self.completed;
+        if (!completed) {
+            [self.callbacks addObject:[^{
+                [executor execute:executionBlock];
+            } copy]];
+        }
+    }
+    if (completed) {
+        [executor execute:executionBlock];
+    }
+
+    return tcs.task;
+}
+
+- (OSSTask *)continueWithBlock:(OSSContinuationBlock)block {
+    return [self continueWithExecutor:[OSSExecutor defaultExecutor] block:block cancellationToken:nil];
+}
+
+- (OSSTask *)continueWithBlock:(OSSContinuationBlock)block cancellationToken:(nullable OSSCancellationToken *)cancellationToken {
+    return [self continueWithExecutor:[OSSExecutor defaultExecutor] block:block cancellationToken:cancellationToken];
+}
+
+- (OSSTask *)continueWithExecutor:(OSSExecutor *)executor
+                withSuccessBlock:(OSSContinuationBlock)block {
+    return [self continueWithExecutor:executor successBlock:block cancellationToken:nil];
+}
+
+- (OSSTask *)continueWithExecutor:(OSSExecutor *)executor
+                    successBlock:(OSSContinuationBlock)block
+               cancellationToken:(nullable OSSCancellationToken *)cancellationToken {
+    if (cancellationToken.cancellationRequested) {
+        return [OSSTask cancelledTask];
+    }
+
+    return [self continueWithExecutor:executor block:^id(OSSTask *task) {
+        if (task.faulted || task.cancelled) {
+            return task;
+        } else {
+            return block(task);
+        }
+    } cancellationToken:cancellationToken];
+}
+
+- (OSSTask *)continueWithSuccessBlock:(OSSContinuationBlock)block {
+    return [self continueWithExecutor:[OSSExecutor defaultExecutor] successBlock:block cancellationToken:nil];
+}
+
+- (OSSTask *)continueWithSuccessBlock:(OSSContinuationBlock)block cancellationToken:(nullable OSSCancellationToken *)cancellationToken {
+    return [self continueWithExecutor:[OSSExecutor defaultExecutor] successBlock:block cancellationToken:cancellationToken];
+}
+
+#pragma mark - Syncing Task (Avoid it)
+
+- (void)warnOperationOnMainThread {
+    ossWarnBlockingOperationOnMainThread();
+}
+
+- (void)waitUntilFinished {
+    if ([NSThread isMainThread]) {
+        [self warnOperationOnMainThread];
+    }
+
+    @synchronized(self.lock) {
+        if (self.completed) {
+            return;
+        }
+        [self.condition lock];
+    }
+    while (!self.completed) {
+        [self.condition wait];
+    }
+    [self.condition unlock];
+}
+
+#pragma mark - NSObject
+
+- (NSString *)description {
+    // Acquire the data from the locked properties
+    BOOL completed;
+    BOOL cancelled;
+    BOOL faulted;
+    NSString *resultDescription = nil;
+
+    @synchronized(self.lock) {
+        completed = self.completed;
+        cancelled = self.cancelled;
+        faulted = self.faulted;
+        resultDescription = completed ? [NSString stringWithFormat:@" result = %@", self.result] : @"";
+    }
+
+    // Description string includes status information and, if available, the
+    // result since in some ways this is what a promise actually "is".
+    return [NSString stringWithFormat:@"<%@: %p; completed = %@; cancelled = %@; faulted = %@;%@>",
+            NSStringFromClass([self class]),
+            self,
+            completed ? @"YES" : @"NO",
+            cancelled ? @"YES" : @"NO",
+            faulted ? @"YES" : @"NO",
+            resultDescription];
+}
+
+@end
+
+@implementation OSSTask(OSS)
+
+- (BOOL)isSuccessful {
+    if (self.cancelled || self.faulted) {
+        return false;
+    }
+    return true;
+}
+
+- (NSError *)toError {
+    if (self.cancelled) {
+        return [NSError errorWithDomain:OSSClientErrorDomain
+                                   code:OSSClientErrorCodeTaskCancelled
+                               userInfo:@{OSSErrorMessageTOKEN: @"This task is cancelled"}];
+    } else if (self.error) {
+        return self.error;
+    } else if (self.exception) {
+        return [NSError errorWithDomain:OSSClientErrorDomain
+                                   code:OSSClientErrorCodeExcpetionCatched
+                               userInfo:@{OSSErrorMessageTOKEN: [NSString stringWithFormat:@"Catch exception - %@", self.exception]}];
+    }
+    return nil;
+}
+
+- (OSSTask *)completed:(OSSCompleteBlock)block {
+    return [self continueWithBlock:^id _Nullable(OSSTask * _Nonnull task) {
+        if ([task isSuccessful]) {
+            block(YES, nil, task.result);
+        } else {
+            block(NO, [task toError], nil);
+        }
+        return nil;
+    }];
+}
+
+@end
+
+NS_ASSUME_NONNULL_END