/thirdparty/breakpad/common/mac/HTTPMultipartUpload.m

  1// Copyright (c) 2006, Google Inc.
  2// All rights reserved.
  3//
  4// Redistribution and use in source and binary forms, with or without
  5// modification, are permitted provided that the following conditions are
  6// met:
  7//
  8//     * Redistributions of source code must retain the above copyright
  9// notice, this list of conditions and the following disclaimer.
 10//     * Redistributions in binary form must reproduce the above
 11// copyright notice, this list of conditions and the following disclaimer
 12// in the documentation and/or other materials provided with the
 13// distribution.
 14//     * Neither the name of Google Inc. nor the names of its
 15// contributors may be used to endorse or promote products derived from
 16// this software without specific prior written permission.
 17//
 18// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 19// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 20// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 21// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 22// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 23// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 24// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 25// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 26// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 27// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 28// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 29
 30#import "HTTPMultipartUpload.h"
 31#import "GTMDefines.h"
 32
 33@interface HTTPMultipartUpload(PrivateMethods)
 34- (NSString *)multipartBoundary;
 35// Each of the following methods will append the starting multipart boundary,
 36// but not the ending one.
 37- (NSData *)formDataForKey:(NSString *)key value:(NSString *)value;
 38- (NSData *)formDataForFileContents:(NSData *)contents name:(NSString *)name;
 39- (NSData *)formDataForFile:(NSString *)file name:(NSString *)name;
 40@end
 41
 42@implementation HTTPMultipartUpload
 43//=============================================================================
 44#pragma mark -
 45#pragma mark || Private ||
 46//=============================================================================
 47- (NSString *)multipartBoundary {
 48  // The boundary has 27 '-' characters followed by 16 hex digits
 49  return [NSString stringWithFormat:@"---------------------------%08X%08X",
 50    rand(), rand()];
 51}
 52
 53//=============================================================================
 54- (NSData *)formDataForKey:(NSString *)key value:(NSString *)value {
 55  NSString *escaped =
 56    [key stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
 57  NSString *fmt =
 58    @"--%@\r\nContent-Disposition: form-data; name=\"%@\"\r\n\r\n%@\r\n";
 59  NSString *form = [NSString stringWithFormat:fmt, boundary_, escaped, value];
 60
 61  return [form dataUsingEncoding:NSUTF8StringEncoding];
 62}
 63
 64//=============================================================================
 65- (NSData *)formDataForFileContents:(NSData *)contents name:(NSString *)name {
 66  NSMutableData *data = [NSMutableData data];
 67  NSString *escaped =
 68    [name stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
 69  NSString *fmt = @"--%@\r\nContent-Disposition: form-data; name=\"%@\"; "
 70    "filename=\"minidump.dmp\"\r\nContent-Type: application/octet-stream\r\n\r\n";
 71  NSString *pre = [NSString stringWithFormat:fmt, boundary_, escaped];
 72
 73  [data appendData:[pre dataUsingEncoding:NSUTF8StringEncoding]];
 74  [data appendData:contents];
 75
 76  return data;
 77}
 78
 79//=============================================================================
 80- (NSData *)formDataForFile:(NSString *)file name:(NSString *)name {
 81  NSData *contents = [NSData dataWithContentsOfFile:file];
 82
 83  return [self formDataForFileContents:contents name:name];
 84}
 85
 86//=============================================================================
 87#pragma mark -
 88#pragma mark || Public ||
 89//=============================================================================
 90- (id)initWithURL:(NSURL *)url {
 91  if ((self = [super init])) {
 92    url_ = [url copy];
 93    boundary_ = [[self multipartBoundary] retain];
 94    files_ = [[NSMutableDictionary alloc] init];
 95  }
 96
 97  return self;
 98}
 99
100//=============================================================================
101- (void)dealloc {
102  [url_ release];
103  [parameters_ release];
104  [files_ release];
105  [boundary_ release];
106  [response_ release];
107
108  [super dealloc];
109}
110
111//=============================================================================
112- (NSURL *)URL {
113  return url_;
114}
115
116//=============================================================================
117- (void)setParameters:(NSDictionary *)parameters {
118  if (parameters != parameters_) {
119    [parameters_ release];
120    parameters_ = [parameters copy];
121  }
122}
123
124//=============================================================================
125- (NSDictionary *)parameters {
126  return parameters_;
127}
128
129//=============================================================================
130- (void)addFileAtPath:(NSString *)path name:(NSString *)name {
131  [files_ setObject:path forKey:name];
132}
133
134//=============================================================================
135- (void)addFileContents:(NSData *)data name:(NSString *)name {
136  [files_ setObject:data forKey:name];
137}
138
139//=============================================================================
140- (NSDictionary *)files {
141  return files_;
142}
143
144//=============================================================================
145- (NSData *)send:(NSError **)error {
146  NSMutableURLRequest *req = 
147    [[NSMutableURLRequest alloc]
148          initWithURL:url_ cachePolicy:NSURLRequestUseProtocolCachePolicy
149      timeoutInterval:10.0 ];
150
151  NSMutableData *postBody = [NSMutableData data];
152
153  [req setValue:[NSString stringWithFormat:@"multipart/form-data; boundary=%@",
154    boundary_] forHTTPHeaderField:@"Content-type"];
155
156  // Add any parameters to the message
157  NSArray *parameterKeys = [parameters_ allKeys];
158  NSString *key;
159
160  NSInteger count = [parameterKeys count];
161  for (NSInteger i = 0; i < count; ++i) {
162    key = [parameterKeys objectAtIndex:i];
163    [postBody appendData:[self formDataForKey:key
164                                        value:[parameters_ objectForKey:key]]];
165  }
166
167  // Add any files to the message
168  NSArray *fileNames = [files_ allKeys];
169  count = [fileNames count];
170  for (NSInteger i = 0; i < count; ++i) {
171    NSString *name = [fileNames objectAtIndex:i];
172    id fileOrData = [files_ objectForKey:name];
173    NSData *fileData;
174
175    // The object can be either the path to a file (NSString) or the contents
176    // of the file (NSData).
177    if ([fileOrData isKindOfClass:[NSData class]])
178      fileData = [self formDataForFileContents:fileOrData name:name];
179    else
180      fileData = [self formDataForFile:fileOrData name:name];
181
182    [postBody appendData:fileData];
183  }
184
185  NSString *epilogue = [NSString stringWithFormat:@"\r\n--%@--\r\n", boundary_];
186  [postBody appendData:[epilogue dataUsingEncoding:NSUTF8StringEncoding]];
187
188  [req setHTTPBody:postBody];
189  [req setHTTPMethod:@"POST"];
190
191  [response_ release];
192  response_ = nil;
193  
194  NSData *data =  [NSURLConnection sendSynchronousRequest:req
195                               returningResponse:&response_
196                                           error:error];
197
198  [response_ retain];
199  [req release];
200
201  return data;
202}
203
204//=============================================================================
205- (NSHTTPURLResponse *)response {
206  return response_;
207}
208
209@end