add crc32 for formupload

Author: longbai

QiniuSDK/Common/QNCrc32.m

@@ -32,12 +32,14 @@ + (UInt32)file:(NSString *)filePath
         int count = (len + kQNBlockSize - 1) / kQNBlockSize;
 
 		uLong crc = crc32(0L, Z_NULL, 0);
+        NSLog(@"%lu %d", crc, count);
 		for (int i = 0; i < count; i++) {
 			int offset = i * kQNBlockSize;
 			int size = (len - offset) > kQNBlockSize ? kQNBlockSize : (len - offset);
 			NSData *d = [data subdataWithRange:NSMakeRange(offset, (unsigned int)size)];
             crc = crc32(crc, [d bytes], (uInt)[d length]);
 		}
+        NSLog(@"%lu %d", crc, count);
 		return (UInt32)crc;
 	}
 }

QiniuSDK/Storage/QNResumeUpload.m

@@ -265,7 +265,6 @@ - (void)putChunk:(NSString *)uphost
 	UInt32 chunkOffset = offset % kQNBlockSize;
 	NSString *url = [[NSString alloc] initWithFormat:@"http://%@/bput/%@/%u", uphost, context, (unsigned int)chunkOffset];
 
-	// Todo: check crc
 	[self post:url withData:data withCompleteBlock:complete withProgressBlock:progressBlock];
 }
 

QiniuSDK/Storage/QNUploadManager.m

@@ -11,7 +11,7 @@
 #import "QNConfig.h"
 #import "QNHttpManager.h"
 #import "QNResponseInfo.h"
-
+#import "QNCrc32.h"
 #import "QNUploadManager.h"
 #import "QNResumeUpload.h"
 #import "QNUploadOption+Private.h"
@@ -71,7 +71,7 @@ - (void)putData:(NSData *)data
 
 	parameters[@"token"] = token;
 
-	if (option.params) {
+	if (option && option.params) {
 		[parameters addEntriesFromDictionary:[option p_convertToPostParams]];
 	}
 
@@ -81,6 +81,10 @@ - (void)putData:(NSData *)data
 		mimeType = @"application/octet-stream";
 	}
 
+    if (option && option.checkCrc) {
+        parameters[@"crc32"] = [NSNumber numberWithUnsignedLong:[QNCrc32 data:data]];
+    }
+
 	QNInternalProgressBlock p = nil;
 
 	if (option && option.progressHandler) {

QiniuSDKTests/QNCrc32Test.m

@@ -8,6 +8,7 @@
 
 #import <XCTest/XCTest.h>
 #import "QNCrc32.h"
+#import "QNTempFile.h"
 
 @interface QNCrc32Test : XCTestCase
 
@@ -22,4 +23,13 @@ - (void)testData {
 	XCTAssert(crc == 3964322768, @"Pass");
 }
 
+- (void)testFile {
+    NSError *error;
+    NSURL *file = [QNTempFile createTempfileWithSize:5 * 1024 * 1024];
+    UInt32 u = [QNCrc32 file:[file relativePath] error:&error];
+
+    XCTAssert(u == 3376132981, @"Pass");
+    [QNTempFile removeTempfile:file];
+}
+
 @end

QiniuSDKTests/QNFormUploadTest.m

@@ -35,7 +35,7 @@ - (void)testUp {
 	__block QNResponseInfo *testInfo = nil;
 	__block NSDictionary *testResp = nil;
 
-	QNUploadOption *opt = [[QNUploadOption alloc] initWithMime:@"text/plain" progressHandler:nil params:@{ @"foo":@"bar" } checkCrc:NO cancellationSignal:nil];
+	QNUploadOption *opt = [[QNUploadOption alloc] initWithMime:@"text/plain" progressHandler:nil params:@{ @"x:foo":@"bar" } checkCrc:YES cancellationSignal:nil];
 	NSData *data = [@"Hello, World!" dataUsingEncoding : NSUTF8StringEncoding];
 	[self.upManager putData:data key:@"你好" token:g_token complete: ^(QNResponseInfo *info, NSString *key, NSDictionary *resp) {
 	    testInfo = info;