michael@0: // Copyright (c) 2006, Google Inc.
michael@0: // All rights reserved.
michael@0: //
michael@0: // Redistribution and use in source and binary forms, with or without
michael@0: // modification, are permitted provided that the following conditions are
michael@0: // met:
michael@0: //
michael@0: //     * Redistributions of source code must retain the above copyright
michael@0: // notice, this list of conditions and the following disclaimer.
michael@0: //     * Redistributions in binary form must reproduce the above
michael@0: // copyright notice, this list of conditions and the following disclaimer
michael@0: // in the documentation and/or other materials provided with the
michael@0: // distribution.
michael@0: //     * Neither the name of Google Inc. nor the names of its
michael@0: // contributors may be used to endorse or promote products derived from
michael@0: // this software without specific prior written permission.
michael@0: //
michael@0: // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
michael@0: // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
michael@0: // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
michael@0: // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
michael@0: // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
michael@0: // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
michael@0: // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
michael@0: // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
michael@0: // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
michael@0: // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
michael@0: // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
michael@0: 
michael@0: #import "HTTPMultipartUpload.h"
michael@0: #import "GTMDefines.h"
michael@0: 
michael@0: @interface HTTPMultipartUpload(PrivateMethods)
michael@0: - (NSString *)multipartBoundary;
michael@0: // Each of the following methods will append the starting multipart boundary,
michael@0: // but not the ending one.
michael@0: - (NSData *)formDataForKey:(NSString *)key value:(NSString *)value;
michael@0: - (NSData *)formDataForFileContents:(NSData *)contents name:(NSString *)name;
michael@0: - (NSData *)formDataForFile:(NSString *)file name:(NSString *)name;
michael@0: @end
michael@0: 
michael@0: @implementation HTTPMultipartUpload
michael@0: //=============================================================================
michael@0: #pragma mark -
michael@0: #pragma mark || Private ||
michael@0: //=============================================================================
michael@0: - (NSString *)multipartBoundary {
michael@0:   // The boundary has 27 '-' characters followed by 16 hex digits
michael@0:   return [NSString stringWithFormat:@"---------------------------%08X%08X",
michael@0:     rand(), rand()];
michael@0: }
michael@0: 
michael@0: //=============================================================================
michael@0: - (NSData *)formDataForKey:(NSString *)key value:(NSString *)value {
michael@0:   NSString *escaped =
michael@0:     [key stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
michael@0:   NSString *fmt =
michael@0:     @"--%@\r\nContent-Disposition: form-data; name=\"%@\"\r\n\r\n%@\r\n";
michael@0:   NSString *form = [NSString stringWithFormat:fmt, boundary_, escaped, value];
michael@0: 
michael@0:   return [form dataUsingEncoding:NSUTF8StringEncoding];
michael@0: }
michael@0: 
michael@0: //=============================================================================
michael@0: - (NSData *)formDataForFileContents:(NSData *)contents name:(NSString *)name {
michael@0:   NSMutableData *data = [NSMutableData data];
michael@0:   NSString *escaped =
michael@0:     [name stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
michael@0:   NSString *fmt = @"--%@\r\nContent-Disposition: form-data; name=\"%@\"; "
michael@0:     "filename=\"minidump.dmp\"\r\nContent-Type: application/octet-stream\r\n\r\n";
michael@0:   NSString *pre = [NSString stringWithFormat:fmt, boundary_, escaped];
michael@0: 
michael@0:   [data appendData:[pre dataUsingEncoding:NSUTF8StringEncoding]];
michael@0:   [data appendData:contents];
michael@0: 
michael@0:   return data;
michael@0: }
michael@0: 
michael@0: //=============================================================================
michael@0: - (NSData *)formDataForFile:(NSString *)file name:(NSString *)name {
michael@0:   NSData *contents = [NSData dataWithContentsOfFile:file];
michael@0: 
michael@0:   return [self formDataForFileContents:contents name:name];
michael@0: }
michael@0: 
michael@0: //=============================================================================
michael@0: #pragma mark -
michael@0: #pragma mark || Public ||
michael@0: //=============================================================================
michael@0: - (id)initWithURL:(NSURL *)url {
michael@0:   if ((self = [super init])) {
michael@0:     url_ = [url copy];
michael@0:     boundary_ = [[self multipartBoundary] retain];
michael@0:     files_ = [[NSMutableDictionary alloc] init];
michael@0:   }
michael@0: 
michael@0:   return self;
michael@0: }
michael@0: 
michael@0: //=============================================================================
michael@0: - (void)dealloc {
michael@0:   [url_ release];
michael@0:   [parameters_ release];
michael@0:   [files_ release];
michael@0:   [boundary_ release];
michael@0:   [response_ release];
michael@0: 
michael@0:   [super dealloc];
michael@0: }
michael@0: 
michael@0: //=============================================================================
michael@0: - (NSURL *)URL {
michael@0:   return url_;
michael@0: }
michael@0: 
michael@0: //=============================================================================
michael@0: - (void)setParameters:(NSDictionary *)parameters {
michael@0:   if (parameters != parameters_) {
michael@0:     [parameters_ release];
michael@0:     parameters_ = [parameters copy];
michael@0:   }
michael@0: }
michael@0: 
michael@0: //=============================================================================
michael@0: - (NSDictionary *)parameters {
michael@0:   return parameters_;
michael@0: }
michael@0: 
michael@0: //=============================================================================
michael@0: - (void)addFileAtPath:(NSString *)path name:(NSString *)name {
michael@0:   [files_ setObject:path forKey:name];
michael@0: }
michael@0: 
michael@0: //=============================================================================
michael@0: - (void)addFileContents:(NSData *)data name:(NSString *)name {
michael@0:   [files_ setObject:data forKey:name];
michael@0: }
michael@0: 
michael@0: //=============================================================================
michael@0: - (NSDictionary *)files {
michael@0:   return files_;
michael@0: }
michael@0: 
michael@0: //=============================================================================
michael@0: - (NSData *)send:(NSError **)error {
michael@0:   NSMutableURLRequest *req = 
michael@0:     [[NSMutableURLRequest alloc]
michael@0:           initWithURL:url_ cachePolicy:NSURLRequestUseProtocolCachePolicy
michael@0:       timeoutInterval:10.0 ];
michael@0: 
michael@0:   NSMutableData *postBody = [NSMutableData data];
michael@0: 
michael@0:   [req setValue:[NSString stringWithFormat:@"multipart/form-data; boundary=%@",
michael@0:     boundary_] forHTTPHeaderField:@"Content-type"];
michael@0: 
michael@0:   // Add any parameters to the message
michael@0:   NSArray *parameterKeys = [parameters_ allKeys];
michael@0:   NSString *key;
michael@0: 
michael@0:   NSInteger count = [parameterKeys count];
michael@0:   for (NSInteger i = 0; i < count; ++i) {
michael@0:     key = [parameterKeys objectAtIndex:i];
michael@0:     [postBody appendData:[self formDataForKey:key
michael@0:                                         value:[parameters_ objectForKey:key]]];
michael@0:   }
michael@0: 
michael@0:   // Add any files to the message
michael@0:   NSArray *fileNames = [files_ allKeys];
michael@0:   count = [fileNames count];
michael@0:   for (NSInteger i = 0; i < count; ++i) {
michael@0:     NSString *name = [fileNames objectAtIndex:i];
michael@0:     id fileOrData = [files_ objectForKey:name];
michael@0:     NSData *fileData;
michael@0: 
michael@0:     // The object can be either the path to a file (NSString) or the contents
michael@0:     // of the file (NSData).
michael@0:     if ([fileOrData isKindOfClass:[NSData class]])
michael@0:       fileData = [self formDataForFileContents:fileOrData name:name];
michael@0:     else
michael@0:       fileData = [self formDataForFile:fileOrData name:name];
michael@0: 
michael@0:     [postBody appendData:fileData];
michael@0:   }
michael@0: 
michael@0:   NSString *epilogue = [NSString stringWithFormat:@"\r\n--%@--\r\n", boundary_];
michael@0:   [postBody appendData:[epilogue dataUsingEncoding:NSUTF8StringEncoding]];
michael@0: 
michael@0:   [req setHTTPBody:postBody];
michael@0:   [req setHTTPMethod:@"POST"];
michael@0: 
michael@0:   [response_ release];
michael@0:   response_ = nil;
michael@0:   
michael@0:   NSData *data =  [NSURLConnection sendSynchronousRequest:req
michael@0:                                returningResponse:&response_
michael@0:                                            error:error];
michael@0: 
michael@0:   [response_ retain];
michael@0:   [req release];
michael@0: 
michael@0:   return data;
michael@0: }
michael@0: 
michael@0: //=============================================================================
michael@0: - (NSHTTPURLResponse *)response {
michael@0:   return response_;
michael@0: }
michael@0: 
michael@0: @end