补充某些必要的文件

cocos2d-x/external/sources/SocketRocket/Internal/Utilities/SRHash.m

@@ -0,0 +1,43 @@
+//
+// Copyright (c) 2016-present, 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 "SRHash.h"
+
+#import <CommonCrypto/CommonDigest.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+NSData *SRSHA1HashFromString(NSString *string)
+{
+    size_t length = [string lengthOfBytesUsingEncoding:NSUTF8StringEncoding];
+    return SRSHA1HashFromBytes(string.UTF8String, length);
+}
+
+NSData *SRSHA1HashFromBytes(const char *bytes, size_t length)
+{
+    uint8_t outputLength = CC_SHA1_DIGEST_LENGTH;
+    unsigned char output[outputLength];
+    CC_SHA1(bytes, (CC_LONG)length, output);
+
+    return [NSData dataWithBytes:output length:outputLength];
+}
+
+NSString *SRBase64EncodedStringFromData(NSData *data)
+{
+    if ([data respondsToSelector:@selector(base64EncodedStringWithOptions:)]) {
+        return [data base64EncodedStringWithOptions:0];
+    }
+
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdeprecated-declarations"
+    return [data base64Encoding];
+#pragma clang diagnostic pop
+}
+
+NS_ASSUME_NONNULL_END