code.grnet.gr Git - pithos-macos/blob - pithos-macos/PithosUtilities.m

   1 //
   2 //  PithosUtilities.m
   3 //  pithos-macos
   4 //
   5 // Copyright 2011 GRNET S.A. All rights reserved.
   6 //
   7 // Redistribution and use in source and binary forms, with or
   8 // without modification, are permitted provided that the following
   9 // conditions are met:
  10 //
  11 //   1. Redistributions of source code must retain the above
  12 //      copyright notice, this list of conditions and the following
  13 //      disclaimer.
  14 //
  15 //   2. Redistributions in binary form must reproduce the above
  16 //      copyright notice, this list of conditions and the following
  17 //      disclaimer in the documentation and/or other materials
  18 //      provided with the distribution.
  19 //
  20 // THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
  21 // OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  22 // WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  23 // PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
  24 // CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  25 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  26 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
  27 // USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  28 // AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29 // LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  30 // ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  31 // POSSIBILITY OF SUCH DAMAGE.
  32 //
  33 // The views and conclusions contained in the software and
  34 // documentation are those of the authors and should not be
  35 // interpreted as representing official policies, either expressed
  36 // or implied, of GRNET S.A.
  37
  38 #import "PithosUtilities.h"
  39 #import "ASIPithosContainerRequest.h"
  40 #import "ASIPithosObjectRequest.h"
  41 #import "ASIPithosObject.h"
  42 #import "HashMapHash.h"
  43
  44 @implementation PithosUtilities
  45
  46 #pragma mark -
  47 #pragma mark Download
  48
  49 + (ASIPithosObjectRequest *)objectDataRequestWithContainerName:(NSString *)containerName
  50                                                     objectName:(NSString *)objectName
  51                                                    toDirectory:(NSString *)directoryPath
  52                                                  checkIfExists:(BOOL)ifExists
  53                                                 sharingAccount:(NSString *)sharingAccount {
  54     NSString *fileName = [objectName lastPathComponent];
  55     if([objectName hasSuffix:@"/"])
  56         fileName = [fileName stringByAppendingString:@"/"];
  57     fileName = [fileName stringByReplacingOccurrencesOfString:@"/" withString:@":"];
  58
  59     NSFileManager *fileManager = [NSFileManager defaultManager];
  60
  61     NSString *destinationPath = [directoryPath stringByAppendingPathComponent:fileName];
  62     if (ifExists && [fileManager fileExistsAtPath:destinationPath]) {
  63         NSAlert *alert = [[[NSAlert alloc] init] autorelease];
  64         [alert setMessageText:@"File Exists"];
  65         [alert setInformativeText:[NSString stringWithFormat:@"A file or directory named '%@' already exists, do you want to replace it?", fileName]];
  66         [alert addButtonWithTitle:@"OK"];
  67         [alert addButtonWithTitle:@"Cancel"];
  68         NSInteger choice = [alert runModal];
  69         if (choice == NSAlertSecondButtonReturn)
  70             return nil;
  71     }
  72
  73     BOOL directoryIsDirectory;
  74     BOOL directoryExists = [fileManager fileExistsAtPath:directoryPath isDirectory:&directoryIsDirectory];
  75     NSError *error = nil;
  76     if (!directoryExists) {
  77         [fileManager createDirectoryAtPath:directoryPath withIntermediateDirectories:YES attributes:nil error:&error];
  78     } else if (!directoryIsDirectory) {
  79         [fileManager removeItemAtPath:directoryPath error:&error];
  80     }
  81     if (error) {
  82         NSLog(@"Cannot remove existing file '%@': %@", fileName, error);
  83         NSAlert *alert = [[[NSAlert alloc] init] autorelease];
  84         [alert setMessageText:@"Removal Error"];
  85         [alert setInformativeText:[NSString stringWithFormat:@"Cannot remove existing file '%@': %@", fileName, error]];
  86         [alert addButtonWithTitle:@"OK"];
  87         [alert runModal];
  88         return nil;
  89     }
  90
  91     ASIPithosObjectRequest *objectRequest = [ASIPithosObjectRequest objectDataRequestWithContainerName:containerName
  92                                                                                             objectName:objectName];
  93     if (sharingAccount)
  94         [objectRequest setRequestUserFromDefaultTo:sharingAccount];
  95     objectRequest.downloadDestinationPath = destinationPath;
  96     objectRequest.allowResumeForFileDownloads = YES;
  97     objectRequest.userInfo = [NSMutableDictionary dictionaryWithObjectsAndKeys:
  98                               fileName, @"fileName",
  99                               destinationPath, @"filePath",
 100                               nil];
 101     return objectRequest;
 102 }
 103
 104 + (NSArray *)objectDataRequestsForSubdirWithContainerName:(NSString *)containerName
 105                                                objectName:(NSString *)objectName
 106                                               toDirectory:(NSString *)directoryPath
 107                                             checkIfExists:(BOOL)ifExists
 108                                            sharingAccount:(NSString *)sharingAccount {
 109     NSString *subdirName = [objectName lastPathComponent];
 110     NSString *destinationPath = [directoryPath stringByAppendingPathComponent:subdirName];
 111     if (ifExists && [[NSFileManager defaultManager] fileExistsAtPath:destinationPath]) {
 112         NSAlert *alert = [[[NSAlert alloc] init] autorelease];
 113         [alert setMessageText:@"File exists"];
 114         [alert setInformativeText:[NSString stringWithFormat:@"A file or directory named '%@' already exists, do you want to replace it?", subdirName]];
 115         [alert addButtonWithTitle:@"OK"];
 116         [alert addButtonWithTitle:@"Cancel"];
 117         NSInteger choice = [alert runModal];
 118         if (choice == NSAlertSecondButtonReturn)
 119             return nil;
 120     }
 121
 122     NSArray *objects = [self objectsForSubdirWithContainerName:containerName objectName:objectName
 123                                                      delimiter:nil sharingAccount:sharingAccount];
 124     if (objects == nil)
 125         return nil;
 126
 127     NSFileManager *fileManager = [NSFileManager defaultManager];
 128     NSMutableArray *objectRequests = [NSMutableArray arrayWithCapacity:[objects count]];
 129     NSUInteger subdirPrefixLength = [objectName length];
 130
 131     NSError *error = nil;
 132     [fileManager createDirectoryAtPath:[directoryPath stringByAppendingPathComponent:subdirName] withIntermediateDirectories:YES attributes:nil error:&error];
 133     if (error) {
 134         NSLog(@"Cannot create directory at '%@': %@", directoryPath, error);
 135         NSAlert *alert = [[[NSAlert alloc] init] autorelease];
 136         [alert setMessageText:@"Create Directory Error"];
 137         [alert setInformativeText:[NSString stringWithFormat:@"Cannot create directory at '%@': %@",
 138                                    directoryPath, error]];
 139         [alert addButtonWithTitle:@"OK"];
 140         [alert runModal];
 141     }
 142
 143     for (ASIPithosObject *object in objects) {
 144         if ([object.contentType isEqualToString:@"application/directory"]) {
 145             NSString *subdirDirectoryPath = [directoryPath stringByAppendingPathComponent:subdirName];
 146             subdirDirectoryPath = [subdirDirectoryPath stringByAppendingPathComponent:[object.name substringFromIndex:subdirPrefixLength]];
 147
 148             BOOL directoryIsDirectory;
 149             BOOL directoryExists = [fileManager fileExistsAtPath:subdirDirectoryPath isDirectory:&directoryIsDirectory];
 150             NSError *error = nil;
 151             if (!directoryExists) {
 152                 [fileManager createDirectoryAtPath:subdirDirectoryPath withIntermediateDirectories:YES attributes:nil error:&error];
 153                 if (error) {
 154                     NSLog(@"Cannot create directory at '%@': %@", subdirDirectoryPath, error);
 155                     NSAlert *alert = [[[NSAlert alloc] init] autorelease];
 156                     [alert setMessageText:@"Create Directory Error"];
 157                     [alert setInformativeText:[NSString stringWithFormat:@"Cannot create directory at '%@': %@",
 158                                                subdirDirectoryPath, error]];
 159                     [alert addButtonWithTitle:@"OK"];
 160                     [alert runModal];
 161                 }
 162             } else if (!directoryIsDirectory) {
 163                 [fileManager removeItemAtPath:subdirDirectoryPath error:&error];
 164                 if (error) {
 165                     NSLog(@"Cannot remove existing file at '%@': %@", subdirDirectoryPath, error);
 166                     NSAlert *alert = [[[NSAlert alloc] init] autorelease];
 167                     [alert setMessageText:@"Remove File Error"];
 168                     [alert setInformativeText:[NSString stringWithFormat:@"Cannot remove existing file at '%@': %@",
 169                                                subdirDirectoryPath, error]];
 170                     [alert addButtonWithTitle:@"OK"];
 171                     [alert runModal];
 172                 }
 173             }
 174         } else {
 175             NSString *fileName = [object.name lastPathComponent];
 176             if([object.name hasSuffix:@"/"])
 177                 fileName = [fileName stringByAppendingString:@"/"];
 178
 179             NSString *objectDirectoryPath = [directoryPath stringByAppendingPathComponent:subdirName];
 180             objectDirectoryPath = [objectDirectoryPath stringByAppendingPathComponent:[object.name substringWithRange:NSMakeRange(subdirPrefixLength, [object.name length] - subdirPrefixLength - [fileName length])]];
 181
 182             ASIPithosObjectRequest *objectRequest = [self objectDataRequestWithContainerName:containerName
 183                                                                                   objectName:object.name
 184                                                                                  toDirectory:objectDirectoryPath
 185                                                                                checkIfExists:NO
 186                                                                               sharingAccount:sharingAccount];
 187             [(NSMutableDictionary *)objectRequest.userInfo setObject:[NSNumber numberWithUnsignedInteger:object.bytes] forKey:@"bytes"];
 188             [objectRequests addObject:objectRequest];
 189         }
 190     }
 191
 192     return objectRequests;
 193 }
 194
 195 #pragma mark -
 196 #pragma mark Download Block
 197
 198 + (ASIPithosObjectRequest *)objectBlockDataRequestWithContainerName:(NSString *)containerName
 199                                                              object:(ASIPithosObject *)object
 200                                                          blockIndex:(NSUInteger)blockIndex
 201                                                           blockSize:(NSUInteger)blockSize {
 202     NSUInteger rangeStart = blockIndex * blockSize;
 203     NSUInteger rangeEnd = (rangeStart + blockSize <= object.bytes) ? (rangeStart + blockSize - 1) : (object.bytes - 1);
 204     ASIPithosObjectRequest *objectRequest = [ASIPithosObjectRequest objectDataRequestWithContainerName:containerName
 205                                                                                             objectName:object.name
 206                                                                                                version:nil
 207                                                                                                  range:[NSString stringWithFormat:@"bytes=%lu-%lu", rangeStart, rangeEnd]
 208                                                                                                ifMatch:object.hash];
 209     return objectRequest;
 210 }
 211
 212 + (NSIndexSet *)missingBlocksForFile:(NSString *)filePath
 213                            blockSize:(NSUInteger)blockSize
 214                            blockHash:(NSString *)blockHash
 215                           withHashes:(NSArray *)hashes {
 216     NSArray *fileHashes = [HashMapHash objectHashMapStrings:filePath withBlockHash:blockHash andBlockSize:blockSize];
 217     return [hashes indexesOfObjectsPassingTest:^(id obj, NSUInteger idx, BOOL *stop) {
 218         if ((idx >= [fileHashes count]) || ![(NSString *)obj isEqualToString:[fileHashes objectAtIndex:idx]])
 219             return YES;
 220         return NO;
 221     }];
 222 }
 223
 224 #pragma mark -
 225 #pragma mark Upload
 226
 227 + (ASIPithosObjectRequest *)writeObjectDataRequestWithContainerName:(NSString *)containerName
 228                                                          objectName:(NSString *)objectName
 229                                                         contentType:(NSString *)contentType
 230                                                           blockSize:(NSUInteger)blockSize
 231                                                           blockHash:(NSString *)blockHash
 232                                                             forFile:(NSString *)filePath
 233                                                       checkIfExists:(BOOL)ifExists
 234                                                              hashes:(NSArray **)hashes
 235                                                      sharingAccount:(NSString *)sharingAccount {
 236     if (ifExists && ![self proceedIfObjectExistsAtContainerName:containerName objectName:objectName
 237                                                  sharingAccount:(NSString *)sharingAccount])
 238         return nil;
 239
 240     if (*hashes == nil)
 241         *hashes = [HashMapHash objectHashMapStrings:filePath withBlockHash:blockHash andBlockSize:blockSize];
 242     if (*hashes == nil)
 243         return nil;
 244     NSString *fileName = [filePath lastPathComponent];
 245     if ([filePath hasSuffix:@"/"])
 246         fileName = [fileName stringByAppendingString:@"/"];
 247     NSUInteger bytes = [self bytesOfFile:filePath];
 248     ASIPithosObjectRequest *objectRequest = [ASIPithosObjectRequest writeObjectDataRequestWithContainerName:containerName
 249                                                                                                  objectName:objectName
 250                                                                                                 contentType:contentType
 251                                                                                             contentEncoding:nil
 252                                                                                          contentDisposition:nil
 253                                                                                                    manifest:nil
 254                                                                                                     sharing:nil
 255                                                                                                    isPublic:ASIPithosObjectRequestPublicIgnore
 256                                                                                                    metadata:nil
 257                                                                                                   blockSize:blockSize
 258                                                                                                   blockHash:blockHash
 259                                                                                                      hashes:*hashes
 260                                                                                                       bytes:bytes];
 261     if (sharingAccount)
 262         [objectRequest setRequestUserFromDefaultTo:sharingAccount];
 263     objectRequest.userInfo = [NSMutableDictionary dictionaryWithObjectsAndKeys:
 264                               fileName, @"fileName",
 265                               [NSNumber numberWithUnsignedInteger:bytes], @"bytes",
 266                               nil];
 267     return objectRequest;
 268 }
 269
 270 + (NSIndexSet *)missingBlocksForHashes:(NSArray *)hashes withMissingHashesResponse:(NSString *)missingHashesResponse {
 271     NSArray *responseLines = [missingHashesResponse componentsSeparatedByCharactersInSet:[NSCharacterSet newlineCharacterSet]];
 272     NSMutableIndexSet *missingBlocks = [NSMutableIndexSet indexSet];
 273     for (NSString *line in responseLines) {
 274         if (![line length])
 275             break;
 276         NSUInteger missingBlock = [hashes indexOfObject:line];
 277         if (missingBlock != NSNotFound)
 278             [missingBlocks addIndex:missingBlock];
 279     }
 280     return missingBlocks;
 281 }
 282
 283 + (ASIPithosContainerRequest *)updateContainerDataRequestWithContainerName:(NSString *)containerName
 284                                                                  blockSize:(NSUInteger)blockSize
 285                                                                    forFile:(NSString *)filePath
 286                                                                     hashes:(NSArray *)hashes
 287                                                      missingHashesResponse:(NSString *)missingHashesResponse
 288                                                             sharingAccount:(NSString *)sharingAccount {
 289     NSIndexSet *missingBlocks = [self missingBlocksForHashes:hashes withMissingHashesResponse:missingHashesResponse];
 290
 291     NSFileManager *fileManager = [NSFileManager defaultManager];
 292     NSFileHandle *fileHandle = [NSFileHandle fileHandleForReadingAtPath:filePath];
 293
 294     // http://cocoawithlove.com/2009/07/temporary-files-and-folders-in-cocoa.html
 295     NSString *tempFileTemplate = NSTemporaryDirectory();
 296     if (tempFileTemplate == nil)
 297         tempFileTemplate = @"/tmp";
 298     tempFileTemplate = [tempFileTemplate stringByAppendingPathComponent:@"pithos-macos.XXXXXX"];
 299     const char *tempFileTemplateCString = [tempFileTemplate fileSystemRepresentation];
 300     char *tempFileNameCString = (char *)malloc(strlen(tempFileTemplateCString) + 1);
 301     strcpy(tempFileNameCString, tempFileTemplateCString);
 302     int fileDescriptor = mkstemp(tempFileNameCString);
 303     NSString *tempFilePath = [fileManager stringWithFileSystemRepresentation:tempFileNameCString length:strlen(tempFileNameCString)];
 304     if (fileDescriptor == -1) {
 305         NSAlert *alert = [[[NSAlert alloc] init] autorelease];
 306         [alert setMessageText:@"Create Temporary File Error"];
 307         [alert setInformativeText:[NSString stringWithFormat:@"Cannot create temporary file at '%@'", tempFilePath]];
 308         [alert addButtonWithTitle:@"OK"];
 309         [alert runModal];
 310         return nil;
 311     }
 312     free(tempFileNameCString);
 313     NSFileHandle *tempFileHandle = [[NSFileHandle alloc] initWithFileDescriptor:fileDescriptor closeOnDealloc:YES];
 314
 315     [missingBlocks enumerateIndexesUsingBlock:^(NSUInteger idx, BOOL *stop){
 316         [fileHandle seekToFileOffset:(idx*blockSize)];
 317         [tempFileHandle writeData:[fileHandle readDataOfLength:blockSize]];
 318     }];
 319     [tempFileHandle closeFile];
 320     [fileHandle closeFile];
 321
 322     ASIPithosContainerRequest *containerRequest = [ASIPithosContainerRequest updateContainerDataRequestWithContainerName:containerName
 323                                                                                                                   policy:nil
 324                                                                                                                 metadata:nil
 325                                                                                                                   update:YES
 326                                                                                                                     file:tempFilePath];
 327     if (sharingAccount)
 328         [containerRequest setRequestUserFromDefaultTo:sharingAccount];
 329     return containerRequest;
 330 }
 331
 332 + (ASIPithosContainerRequest *)updateContainerDataRequestWithContainerName:(NSString *)containerName
 333                                                                  blockSize:(NSUInteger)blockSize
 334                                                                    forFile:(NSString *)filePath
 335                                                          missingBlockIndex:(NSUInteger)missingBlockIndex
 336                                                             sharingAccount:(NSString *)sharingAccount {
 337     NSFileHandle *fileHandle = [NSFileHandle fileHandleForReadingAtPath:filePath];
 338     [fileHandle seekToFileOffset:(missingBlockIndex *blockSize)];
 339     NSData *blockData = [fileHandle readDataOfLength:blockSize];
 340     [fileHandle closeFile];
 341     ASIPithosContainerRequest *containerRequest = [ASIPithosContainerRequest updateContainerDataRequestWithContainerName:containerName
 342                                                                                                                   policy:nil
 343                                                                                                                 metadata:nil
 344                                                                                                                   update:YES
 345                                                                                                                     data:blockData];
 346     if (sharingAccount)
 347         [containerRequest setRequestUserFromDefaultTo:sharingAccount];
 348     return containerRequest;
 349 }
 350
 351 + (NSArray *)writeObjectDataRequestsWithContainerName:(NSString *)containerName
 352                                            objectName:(NSString *)objectName
 353                                             blockSize:(NSUInteger)blockSize
 354                                             blockHash:(NSString *)blockHash
 355                                          forDirectory:(NSString *)directoryPath
 356                                         checkIfExists:(BOOL)ifExists
 357                                           objectNames:(NSMutableArray **)objectNames
 358                                          contentTypes:(NSMutableArray **)contentTypes
 359                                             filePaths:(NSMutableArray **)filePaths
 360                                          hashesArrays:(NSMutableArray **)hashesArrays
 361                               directoryObjectRequests:(NSMutableArray **) directoryObjectRequests
 362                                        sharingAccount:(NSString *)sharingAccount {
 363     if (ifExists && ![self proceedIfObjectExistsAtContainerName:containerName objectName:objectName sharingAccount:sharingAccount])
 364         return nil;
 365
 366     NSFileManager *fileManager = [NSFileManager defaultManager];
 367     NSError *error = nil;
 368     NSArray *subPaths = [fileManager subpathsOfDirectoryAtPath:directoryPath error:&error];
 369     if (error) {
 370         NSAlert *alert = [[[NSAlert alloc] init] autorelease];
 371         [alert setMessageText:@"Directory Read Error"];
 372         [alert setInformativeText:[NSString stringWithFormat:@"Cannot read contents of directory '%@': %@",
 373                                    [directoryPath lastPathComponent], error]];
 374         [alert addButtonWithTitle:@"OK"];
 375         [alert runModal];
 376         return nil;
 377     }
 378
 379     *directoryObjectRequests = [NSMutableArray arrayWithCapacity:[subPaths count]];
 380     ASIPithosObjectRequest *objectRequest = [ASIPithosObjectRequest writeObjectDataRequestWithContainerName:containerName
 381                                                                                                  objectName:objectName
 382                                                                                                        eTag:nil
 383                                                                                                 contentType:@"application/directory"
 384                                                                                             contentEncoding:nil
 385                                                                                          contentDisposition:nil
 386                                                                                                    manifest:nil
 387                                                                                                     sharing:nil
 388                                                                                                    isPublic:ASIPithosObjectRequestPublicIgnore
 389                                                                                                    metadata:nil
 390                                                                                                        data:[NSData data]];
 391     if (sharingAccount)
 392         [objectRequest setRequestUserFromDefaultTo:sharingAccount];
 393     objectRequest.userInfo = [NSMutableDictionary dictionaryWithObjectsAndKeys:
 394                               [directoryPath lastPathComponent], @"fileName",
 395                               nil];
 396     [*directoryObjectRequests addObject:objectRequest];
 397
 398     NSMutableArray *objectRequests = [NSMutableArray arrayWithCapacity:[subPaths count]];
 399     *objectNames = [NSMutableArray arrayWithCapacity:[subPaths count]];
 400     *contentTypes = [NSMutableArray arrayWithCapacity:[subPaths count]];
 401     *filePaths = [NSMutableArray arrayWithCapacity:[subPaths count]];
 402     *hashesArrays = [NSMutableArray arrayWithCapacity:[subPaths count]];
 403     BOOL isDirectory;
 404     NSString *subObjectName;
 405     NSArray *hashes;
 406     NSUInteger bytes;
 407     NSString *contentType;
 408     NSString *filePath;
 409     NSString *fileName;
 410     for (NSString *objectNameSuffix in subPaths) {
 411         filePath = [directoryPath stringByAppendingPathComponent:objectNameSuffix];
 412         if ([fileManager fileExistsAtPath:filePath isDirectory:&isDirectory]) {
 413             if (!isDirectory) {
 414                 hashes = [HashMapHash objectHashMapStrings:filePath withBlockHash:blockHash andBlockSize:blockSize];
 415                 if (hashes) {
 416                     subObjectName = [objectName stringByAppendingPathComponent:objectNameSuffix];
 417                     fileName = [filePath lastPathComponent];
 418                     if ([filePath hasSuffix:@"/"])
 419                         fileName = [fileName stringByAppendingString:@"/"];
 420                     bytes = [self bytesOfFile:filePath];
 421                     error = nil;
 422                     contentType = [self contentTypeOfFile:filePath error:&error];
 423                     if (contentType == nil)
 424                         contentType = @"application/octet-stream";
 425                     if (error)
 426                         NSLog(@"contentType detection error: %@", error);
 427                     objectRequest = [ASIPithosObjectRequest writeObjectDataRequestWithContainerName:containerName
 428                                                                                          objectName:subObjectName
 429                                                                                         contentType:contentType
 430                                                                                     contentEncoding:nil
 431                                                                                  contentDisposition:nil
 432                                                                                            manifest:nil
 433                                                                                             sharing:nil
 434                                                                                            isPublic:ASIPithosObjectRequestPublicIgnore
 435                                                                                            metadata:nil
 436                                                                                           blockSize:blockSize
 437                                                                                           blockHash:blockHash
 438                                                                                              hashes:hashes
 439                                                                                               bytes:bytes];
 440                     if (sharingAccount)
 441                         [objectRequest setRequestUserFromDefaultTo:sharingAccount];
 442                     objectRequest.userInfo = [NSMutableDictionary dictionaryWithObjectsAndKeys:
 443                                               fileName, @"fileName",
 444                                               [NSNumber numberWithUnsignedInteger:bytes], @"bytes",
 445                                               nil];
 446                     [objectRequests addObject:objectRequest];
 447                     [*objectNames addObject:subObjectName];
 448                     [*contentTypes addObject:contentType];
 449                     [*filePaths addObject:filePath];
 450                     [*hashesArrays addObject:hashes];
 451                 }
 452
 453             } else {
 454                 subObjectName = [objectName stringByAppendingPathComponent:objectNameSuffix];
 455                 fileName = [filePath lastPathComponent];
 456                 objectRequest = [ASIPithosObjectRequest writeObjectDataRequestWithContainerName:containerName
 457                                                                                      objectName:subObjectName
 458                                                                                            eTag:nil
 459                                                                                     contentType:@"application/directory"
 460                                                                                 contentEncoding:nil
 461                                                                              contentDisposition:nil
 462                                                                                        manifest:nil
 463                                                                                         sharing:nil
 464                                                                                        isPublic:ASIPithosObjectRequestPublicIgnore
 465                                                                                        metadata:nil
 466                                                                                            data:[NSData data]];
 467                 if (sharingAccount)
 468                     [objectRequest setRequestUserFromDefaultTo:sharingAccount];
 469                 objectRequest.userInfo = [NSMutableDictionary dictionaryWithObjectsAndKeys:
 470                                           fileName, @"fileName",
 471                                           nil];
 472                 [*directoryObjectRequests addObject:objectRequest];
 473             }
 474         }
 475     }
 476
 477     return objectRequests;
 478 }
 479
 480 #pragma mark -
 481 #pragma mark Delete
 482
 483 + (NSArray *)deleteObjectRequestsForSubdirWithContainerName:(NSString *)containerName objectName:(NSString *)objectName {
 484     NSArray *objects = [self objectsForSubdirWithContainerName:containerName objectName:objectName delimiter:nil sharingAccount:nil];
 485     if (objects == nil)
 486         return nil;
 487
 488     NSMutableArray *objectRequests = [NSMutableArray arrayWithCapacity:([objects count] + 1)];
 489     ASIPithosObjectRequest *objectRequest;
 490     if (![objectName hasSuffix:@"/"]) {
 491         objectRequest = [ASIPithosObjectRequest deleteObjectRequestWithContainerName:containerName objectName:objectName];
 492         objectRequest.userInfo = [NSMutableDictionary dictionaryWithObjectsAndKeys:
 493                                   [objectName lastPathComponent], @"fileName",
 494                                   nil];
 495         [objectRequests addObject:objectRequest];
 496     }
 497     NSString *fileName;
 498     for (ASIPithosObject *object in objects) {
 499         fileName = [object.name lastPathComponent];
 500         if ([object.name hasSuffix:@"/"])
 501             fileName = [fileName stringByAppendingString:@"/"];
 502         objectRequest = [ASIPithosObjectRequest deleteObjectRequestWithContainerName:containerName objectName:object.name];
 503         objectRequest.userInfo = [NSMutableDictionary dictionaryWithObjectsAndKeys:
 504                                   fileName, @"fileName",
 505                                   nil];
 506         [objectRequests addObject:objectRequest];
 507     }
 508
 509     if ([objectRequests count] == 0)
 510         return nil;
 511     return objectRequests;
 512 }
 513
 514 #pragma mark -
 515 #pragma mark Copy
 516
 517 + (ASIPithosObjectRequest *)copyObjectRequestWithContainerName:(NSString *)containerName
 518                                                     objectName:(NSString *)objectName
 519                                       destinationContainerName:(NSString *)destinationContainerName
 520                                          destinationObjectName:(NSString *)destinationObjectName
 521                                                  checkIfExists:(BOOL)ifExists
 522                                                 sharingAccount:(NSString *)sharingAccount {
 523     if (ifExists && ![self proceedIfObjectExistsAtContainerName:destinationContainerName objectName:destinationObjectName sharingAccount:nil])
 524         return nil;
 525
 526     ASIPithosObjectRequest *objectRequest = [ASIPithosObjectRequest copyObjectDataRequestWithContainerName:containerName
 527                                                                                                 objectName:objectName
 528                                                                                                contentType:nil
 529                                                                                            contentEncoding:nil
 530                                                                                         contentDisposition:nil
 531                                                                                                   manifest:nil
 532                                                                                                    sharing:nil
 533                                                                                                   isPublic:ASIPithosObjectRequestPublicIgnore
 534                                                                                                   metadata:nil
 535                                                                                   destinationContainerName:destinationContainerName
 536                                                                                      destinationObjectName:destinationObjectName
 537                                                                                         destinationAccount:nil
 538                                                                                              sourceVersion:nil];
 539     objectRequest.userInfo = [NSMutableDictionary dictionaryWithObjectsAndKeys:
 540                               containerName, @"sourceContainerName",
 541                               objectName, @"sourceObjectName",
 542                               destinationContainerName, @"destinationContainerName",
 543                               destinationObjectName, @"destinationObjectName",
 544                               nil];
 545     if (sharingAccount)
 546         [objectRequest setRequestUserFromDefaultTo:sharingAccount];
 547     return objectRequest;
 548 }
 549
 550 + (NSArray *)copyObjectRequestsForSubdirWithContainerName:(NSString *)containerName
 551                                                objectName:(NSString *)objectName
 552                                  destinationContainerName:(NSString *)destinationContainerName
 553                                     destinationObjectName:(NSString *)destinationObjectName
 554                                             checkIfExists:(BOOL)ifExists
 555                                            sharingAccount:(NSString *)sharingAccount {
 556     if (ifExists && ![self proceedIfObjectExistsAtContainerName:destinationContainerName objectName:destinationObjectName sharingAccount:nil])
 557         return nil;
 558
 559     NSArray *objects = [self objectsForSubdirWithContainerName:containerName objectName:objectName
 560                                                      delimiter:nil sharingAccount:sharingAccount];
 561     if (objects == nil)
 562         return nil;
 563
 564     NSMutableArray *objectRequests = [NSMutableArray arrayWithCapacity:([objects count] + 1)];
 565     ASIPithosObjectRequest *objectRequest;
 566     if ([objectName isEqualToString:destinationObjectName]) {
 567         if (![objectName hasSuffix:@"/"]) {
 568             objectRequest = [ASIPithosObjectRequest copyObjectDataRequestWithContainerName:containerName
 569                                                                                 objectName:objectName
 570                                                                                contentType:nil
 571                                                                            contentEncoding:nil
 572                                                                         contentDisposition:nil
 573                                                                                   manifest:nil
 574                                                                                    sharing:nil
 575                                                                                   isPublic:ASIPithosObjectRequestPublicIgnore
 576                                                                                   metadata:nil
 577                                                                   destinationContainerName:destinationContainerName
 578                                                                      destinationObjectName:objectName
 579                                                                         destinationAccount:nil
 580                                                                              sourceVersion:nil];
 581             objectRequest.userInfo = [NSMutableDictionary dictionaryWithObjectsAndKeys:
 582                                       containerName, @"sourceContainerName",
 583                                       objectName, @"sourceObjectName",
 584                                       destinationContainerName, @"destinationContainerName",
 585                                       objectName, @"destinationObjectName",
 586                                       nil];
 587             if (sharingAccount)
 588                 [objectRequest setRequestUserFromDefaultTo:sharingAccount];
 589             [objectRequests addObject:objectRequest];
 590         }
 591         for (ASIPithosObject *object in objects) {
 592             objectRequest = [ASIPithosObjectRequest copyObjectDataRequestWithContainerName:containerName
 593                                                                                 objectName:object.name
 594                                                                                contentType:nil
 595                                                                            contentEncoding:nil
 596                                                                         contentDisposition:nil
 597                                                                                   manifest:nil
 598                                                                                    sharing:nil
 599                                                                                   isPublic:ASIPithosObjectRequestPublicIgnore
 600                                                                                   metadata:nil
 601                                                                   destinationContainerName:destinationContainerName
 602                                                                      destinationObjectName:object.name
 603                                                                         destinationAccount:nil
 604                                                                              sourceVersion:nil];
 605             objectRequest.userInfo = [NSMutableDictionary dictionaryWithObjectsAndKeys:
 606                                       containerName, @"sourceContainerName",
 607                                       object.name, @"sourceObjectName",
 608                                       destinationContainerName, @"destinationContainerName",
 609                                       object.name, @"destinationObjectName",
 610                                       nil];
 611             if (sharingAccount)
 612                 [objectRequest setRequestUserFromDefaultTo:sharingAccount];
 613             [objectRequests addObject:objectRequest];
 614         }
 615     } else {
 616         if (![objectName hasSuffix:@"/"]) {
 617             objectRequest = [ASIPithosObjectRequest copyObjectDataRequestWithContainerName:containerName
 618                                                                                 objectName:objectName
 619                                                                                contentType:nil
 620                                                                            contentEncoding:nil
 621                                                                         contentDisposition:nil
 622                                                                                   manifest:nil
 623                                                                                    sharing:nil
 624                                                                                   isPublic:ASIPithosObjectRequestPublicIgnore
 625                                                                                   metadata:nil
 626                                                                   destinationContainerName:destinationContainerName
 627                                                                      destinationObjectName:destinationObjectName
 628                                                                         destinationAccount:nil
 629                                                                              sourceVersion:nil];
 630             objectRequest.userInfo = [NSMutableDictionary dictionaryWithObjectsAndKeys:
 631                                       containerName, @"sourceContainerName",
 632                                       objectName, @"sourceObjectName",
 633                                       destinationContainerName, @"destinationContainerName",
 634                                       destinationObjectName, @"destinationObjectName",
 635                                       nil];
 636             if (sharingAccount)
 637                 [objectRequest setRequestUserFromDefaultTo:sharingAccount];
 638             [objectRequests addObject:objectRequest];
 639         }
 640         NSRange prefixRange = NSMakeRange(0, [objectName length]);
 641         NSString *newObjectName;
 642         for (ASIPithosObject *object in objects) {
 643             newObjectName = [object.name stringByReplacingOccurrencesOfString:objectName
 644                                                                    withString:destinationObjectName
 645                                                                       options:NSAnchoredSearch
 646                                                                         range:prefixRange];
 647             objectRequest = [ASIPithosObjectRequest copyObjectDataRequestWithContainerName:containerName
 648                                                                                 objectName:object.name
 649                                                                                contentType:nil
 650                                                                            contentEncoding:nil
 651                                                                         contentDisposition:nil
 652                                                                                   manifest:nil
 653                                                                                    sharing:nil
 654                                                                                   isPublic:ASIPithosObjectRequestPublicIgnore
 655                                                                                   metadata:nil
 656                                                                   destinationContainerName:destinationContainerName
 657                                                                      destinationObjectName:newObjectName
 658                                                                         destinationAccount:nil
 659                                                                              sourceVersion:nil];
 660             objectRequest.userInfo = [NSMutableDictionary dictionaryWithObjectsAndKeys:
 661                                       containerName, @"sourceContainerName",
 662                                       object.name, @"sourceObjectName",
 663                                       destinationContainerName, @"destinationContainerName",
 664                                       newObjectName, @"destinationObjectName",
 665                                       nil];
 666             if (sharingAccount)
 667                 [objectRequest setRequestUserFromDefaultTo:sharingAccount];
 668             [objectRequests addObject:objectRequest];
 669         }
 670     }
 671
 672     if ([objectRequests count] == 0)
 673         return nil;
 674     return objectRequests;
 675 }
 676
 677 #pragma mark -
 678 #pragma mark Move
 679
 680 + (ASIPithosObjectRequest *)moveObjectRequestWithContainerName:(NSString *)containerName
 681                                      objectName:(NSString *)objectName
 682                        destinationContainerName:(NSString *)destinationContainerName
 683                           destinationObjectName:(NSString *)destinationObjectName
 684                                   checkIfExists:(BOOL)ifExists {
 685     if (ifExists && ![self proceedIfObjectExistsAtContainerName:destinationContainerName objectName:destinationObjectName sharingAccount:nil])
 686         return nil;
 687
 688     ASIPithosObjectRequest *objectRequest = [ASIPithosObjectRequest moveObjectDataRequestWithContainerName:containerName
 689                                                                                                 objectName:objectName
 690                                                                                                contentType:nil
 691                                                                                            contentEncoding:nil
 692                                                                                         contentDisposition:nil
 693                                                                                                   manifest:nil
 694                                                                                                    sharing:nil
 695                                                                                                   isPublic:ASIPithosObjectRequestPublicIgnore
 696                                                                                                   metadata:nil
 697                                                                                   destinationContainerName:destinationContainerName
 698                                                                                      destinationObjectName:destinationObjectName
 699                                                                                         destinationAccount:nil];
 700     objectRequest.userInfo = [NSMutableDictionary dictionaryWithObjectsAndKeys:
 701                               containerName, @"sourceContainerName",
 702                               objectName, @"sourceObjectName",
 703                               destinationContainerName, @"destinationContainerName",
 704                               destinationObjectName, @"destinationObjectName",
 705                               nil];
 706     return objectRequest;
 707 }
 708
 709 + (NSArray *)moveObjectRequestsForSubdirWithContainerName:(NSString *)containerName
 710                                                objectName:(NSString *)objectName
 711                                  destinationContainerName:(NSString *)destinationContainerName
 712                                     destinationObjectName:(NSString *)destinationObjectName
 713                                             checkIfExists:(BOOL)ifExists {
 714     if (ifExists && ![self proceedIfObjectExistsAtContainerName:destinationContainerName objectName:destinationObjectName sharingAccount:nil])
 715         return nil;
 716
 717     NSArray *objects = [self objectsForSubdirWithContainerName:containerName objectName:objectName delimiter:nil sharingAccount:nil];
 718     if (objects == nil)
 719         return nil;
 720
 721     ASIPithosObjectRequest *objectRequest;
 722     NSMutableArray *objectRequests = [NSMutableArray arrayWithCapacity:([objects count] + 1)];
 723     if ([objectName isEqualToString:destinationObjectName]) {
 724         if (![objectName hasSuffix:@"/"]) {
 725             objectRequest = [ASIPithosObjectRequest moveObjectDataRequestWithContainerName:containerName
 726                                                                                 objectName:objectName
 727                                                                                contentType:nil
 728                                                                            contentEncoding:nil
 729                                                                         contentDisposition:nil
 730                                                                                   manifest:nil
 731                                                                                    sharing:nil
 732                                                                                   isPublic:ASIPithosObjectRequestPublicIgnore
 733                                                                                   metadata:nil
 734                                                                   destinationContainerName:destinationContainerName
 735                                                                      destinationObjectName:objectName
 736                                                                         destinationAccount:nil];
 737             objectRequest.userInfo = [NSMutableDictionary dictionaryWithObjectsAndKeys:
 738                                       containerName, @"sourceContainerName",
 739                                       objectName, @"sourceObjectName",
 740                                       destinationContainerName, @"destinationContainerName",
 741                                       objectName, @"destinationObjectName",
 742                                       nil];
 743             [objectRequests addObject:objectRequest];
 744         }
 745         for (ASIPithosObject *object in objects) {
 746             objectRequest = [ASIPithosObjectRequest moveObjectDataRequestWithContainerName:containerName
 747                                                                                 objectName:object.name
 748                                                                                contentType:nil
 749                                                                            contentEncoding:nil
 750                                                                         contentDisposition:nil
 751                                                                                   manifest:nil
 752                                                                                    sharing:nil
 753                                                                                   isPublic:ASIPithosObjectRequestPublicIgnore
 754                                                                                   metadata:nil
 755                                                                   destinationContainerName:destinationContainerName
 756                                                                      destinationObjectName:object.name
 757                                                                         destinationAccount:nil];
 758             objectRequest.userInfo = [NSMutableDictionary dictionaryWithObjectsAndKeys:
 759                                       containerName, @"sourceContainerName",
 760                                       object.name, @"sourceObjectName",
 761                                       destinationContainerName, @"destinationContainerName",
 762                                       object.name, @"destinationObjectName",
 763                                       nil];
 764             [objectRequests addObject:objectRequest];
 765         }
 766     } else {
 767         if (![objectName hasSuffix:@"/"]) {
 768             objectRequest = [ASIPithosObjectRequest moveObjectDataRequestWithContainerName:containerName
 769                                                                                 objectName:objectName
 770                                                                                contentType:nil
 771                                                                            contentEncoding:nil
 772                                                                         contentDisposition:nil
 773                                                                                   manifest:nil
 774                                                                                    sharing:nil
 775                                                                                   isPublic:ASIPithosObjectRequestPublicIgnore
 776                                                                                   metadata:nil
 777                                                                   destinationContainerName:destinationContainerName
 778                                                                      destinationObjectName:destinationObjectName
 779                                                                         destinationAccount:nil];
 780             objectRequest.userInfo = [NSMutableDictionary dictionaryWithObjectsAndKeys:
 781                                       containerName, @"sourceContainerName",
 782                                       objectName, @"sourceObjectName",
 783                                       destinationContainerName, @"destinationContainerName",
 784                                       destinationObjectName, @"destinationObjectName",
 785                                       nil];
 786             [objectRequests addObject:objectRequest];
 787         }
 788         NSRange prefixRange = NSMakeRange(0, [objectName length]);
 789         NSString *newObjectName;
 790         for (ASIPithosObject *object in objects) {
 791             newObjectName = [object.name stringByReplacingOccurrencesOfString:objectName
 792                                                                    withString:destinationObjectName
 793                                                                       options:NSAnchoredSearch
 794                                                                         range:prefixRange];
 795             objectRequest = [ASIPithosObjectRequest moveObjectDataRequestWithContainerName:containerName
 796                                                                                 objectName:object.name
 797                                                                                contentType:nil
 798                                                                            contentEncoding:nil
 799                                                                         contentDisposition:nil
 800                                                                                   manifest:nil
 801                                                                                    sharing:nil
 802                                                                                   isPublic:ASIPithosObjectRequestPublicIgnore
 803                                                                                   metadata:nil
 804                                                                   destinationContainerName:destinationContainerName
 805                                                                      destinationObjectName:newObjectName
 806                                                                         destinationAccount:nil];
 807             objectRequest.userInfo = [NSMutableDictionary dictionaryWithObjectsAndKeys:
 808                                       containerName, @"sourceContainerName",
 809                                       object.name, @"sourceObjectName",
 810                                       destinationContainerName, @"destinationContainerName",
 811                                       newObjectName, @"destinationObjectName",
 812                                       nil];
 813             [objectRequests addObject:objectRequest];
 814         }
 815     }
 816
 817     if ([objectRequests count] == 0)
 818         return nil;
 819     return objectRequests;
 820 }
 821
 822 #pragma mark -
 823 #pragma mark Helper Methods
 824
 825 // Size of the file in bytes
 826 + (NSUInteger)bytesOfFile:(NSString *)filePath {
 827     NSFileManager *fileManager = [NSFileManager defaultManager];
 828     NSDictionary *attributes = [fileManager attributesOfItemAtPath:filePath error:nil];
 829     return [[attributes objectForKey:NSFileSize] intValue];
 830 }
 831
 832 // Content type of the file or nil if it cannot be determined
 833 + (NSString *)contentTypeOfFile:(NSString *)filePath error:(NSError **)error {
 834     NSURLResponse *response = nil;
 835     [NSURLConnection sendSynchronousRequest:[NSURLRequest requestWithURL:[NSURL fileURLWithPath:filePath]
 836                                                              cachePolicy:NSURLCacheStorageNotAllowed
 837                                                          timeoutInterval:.1]
 838                           returningResponse:&response
 839                                       error:error];
 840     return [response MIMEType];
 841 }
 842
 843 // Returns if an object exists at the given container/object path and if this object is an application/directory
 844 // If an error occured an alert is shown and it is returned so the caller won't proceed
 845 + (BOOL)objectExistsAtContainerName:(NSString *)containerName objectName:(NSString *)objectName
 846                               error:(NSError **)error isDirectory:(BOOL *)isDirectory
 847                      sharingAccount:(NSString *)sharingAccount {
 848     ASIPithosObjectRequest *objectRequest = [ASIPithosObjectRequest objectMetadataRequestWithContainerName:containerName
 849                                                                                                 objectName:objectName];
 850     if (sharingAccount)
 851         [objectRequest setRequestUserFromDefaultTo:sharingAccount];
 852     [[PithosUtilities prepareRequest:objectRequest priority:NSOperationQueuePriorityVeryHigh] startAsynchronous];
 853     while (![objectRequest isFinished]) {
 854         sleep(1);
 855     }
 856     *error = [objectRequest error];
 857     if (*error) {
 858         [self httpRequestErrorAlertWithRequest:objectRequest];
 859         return NO;
 860     } else if (objectRequest.responseStatusCode == 200) {
 861         *isDirectory = [[objectRequest contentType] isEqualToString:@"application/directory"];
 862         return YES;
 863     }
 864     return NO;
 865 }
 866
 867 // Returns if the called should proceed, after an interactive check if an object exists
 868 // at the given container/object path is performed
 869 + (BOOL)proceedIfObjectExistsAtContainerName:(NSString *)containerName objectName:(NSString *)objectName
 870                               sharingAccount:(NSString *)sharingAccount {
 871     NSError *error = nil;
 872     BOOL isDirectory;
 873     BOOL objectExists = [self objectExistsAtContainerName:containerName
 874                                                objectName:objectName
 875                                                     error:&error
 876                                               isDirectory:&isDirectory
 877                                            sharingAccount:sharingAccount];
 878     if (error) {
 879         return NO;
 880     } else if (objectExists) {
 881         NSAlert *alert = [[[NSAlert alloc] init] autorelease];
 882         if (isDirectory) {
 883             [alert setMessageText:@"Directory Exists"];
 884             if (sharingAccount)
 885                 [alert setInformativeText:[NSString stringWithFormat:@"A directory with path '%@' in the container '%@' of user '%@' already exists, do you want to replace it?", objectName, containerName, sharingAccount]];
 886             else
 887                 [alert setInformativeText:[NSString stringWithFormat:@"A directory with path '%@' in the container '%@' already exists, do you want to replace it?", objectName, containerName]];
 888         } else {
 889             [alert setMessageText:@"Object Exists"];
 890             if (sharingAccount)
 891                 [alert setInformativeText:[NSString stringWithFormat:@"An object with path '%@' in the container '%@' of user '%@' already exists, do you want to replace it?", objectName, containerName, sharingAccount]];
 892             else
 893                 [alert setInformativeText:[NSString stringWithFormat:@"An object with path '%@' in the container '%@' already exists, do you want to replace it?", objectName, containerName]];
 894         }
 895         [alert addButtonWithTitle:@"OK"];
 896         [alert addButtonWithTitle:@"Cancel"];
 897         NSInteger choice = [alert runModal];
 898         if (choice == NSAlertSecondButtonReturn)
 899             return NO;
 900     }
 901     return YES;
 902 }
 903
 904
 905 // List of objects at the given container/object path, with prefix and or delimiter
 906 + (NSArray *)objectsWithContainerName:(NSString *)containerName objectNamePrefix:(NSString *)objectNamePrefix
 907                             delimiter:(NSString *)delimiter sharingAccount:(NSString *)sharingAccount {
 908     NSMutableArray *objects = [NSMutableArray array];
 909     NSString *marker = nil;
 910     do {
 911         ASIPithosContainerRequest *containerRequest = [ASIPithosContainerRequest listObjectsRequestWithContainerName:containerName
 912                                                                                                                limit:0
 913                                                                                                               marker:marker
 914                                                                                                               prefix:objectNamePrefix
 915                                                                                                            delimiter:delimiter
 916                                                                                                                 path:nil
 917                                                                                                                 meta:nil
 918                                                                                                               shared:NO
 919                                                                                                                until:nil];
 920         if (sharingAccount)
 921             [containerRequest setRequestUserFromDefaultTo:sharingAccount];
 922         [[PithosUtilities prepareRequest:containerRequest priority:NSOperationQueuePriorityVeryHigh] startAsynchronous];
 923         while (![containerRequest isFinished]) {
 924             sleep(1);
 925         }
 926         if ([containerRequest error]) {
 927             [self httpRequestErrorAlertWithRequest:containerRequest];
 928             return nil;
 929         }
 930         NSArray *someObjects = [containerRequest objects];
 931         [objects addObjectsFromArray:someObjects];
 932         if ([someObjects count] < 10000)
 933             marker = nil;
 934         else
 935             marker = [[someObjects lastObject] name];
 936     } while (marker);
 937     return objects;
 938 }
 939
 940 // List of objects at the given container/object path, that may be a subdir or an application/directory,
 941 // with prefix and or delimiter
 942 + (NSArray *)objectsForSubdirWithContainerName:(NSString *)containerName objectName:(NSString *)objectName
 943                                      delimiter:(NSString *)delimiter sharingAccount:(NSString *)sharingAccount {
 944     NSString *subdirNamePrefix = [NSString stringWithString:objectName];
 945     if (![subdirNamePrefix hasSuffix:@"/"])
 946         subdirNamePrefix = [subdirNamePrefix stringByAppendingString:@"/"];
 947     return [self objectsWithContainerName:containerName objectNamePrefix:subdirNamePrefix
 948                                 delimiter:delimiter sharingAccount:sharingAccount];
 949 }
 950
 951 // A safe object name at the given container/object path
 952 // The original name has " %d" appended to it before any ".*" suffix, for the first integer that produces a name that is free to use
 953 // If the original name hasn't got a "." but has a "/" suffix, then it is replaced with " %d/" instead
 954 // Subdirs are taken into consideration
 955 + (NSString *)safeObjectNameForContainerName:(NSString *)containerName objectName:(NSString *)objectName {
 956     NSString *objectNamePrefix;
 957     NSString *objectNameExtraSuffix;
 958     NSRange lastDotRange = [objectName rangeOfString:@"." options:NSBackwardsSearch];
 959     if (lastDotRange.length == 1) {
 960         objectNamePrefix = [objectName substringToIndex:lastDotRange.location];
 961         objectNameExtraSuffix = [objectName substringFromIndex:lastDotRange.location];
 962     } else if ([objectName hasSuffix:@"/"]) {
 963         objectNamePrefix = [objectName substringToIndex:([objectName length] - 1)];
 964         objectNameExtraSuffix = [NSString stringWithString:@"/"];
 965     } else {
 966         objectNamePrefix = [NSString stringWithString:objectName];
 967         objectNameExtraSuffix = [NSString string];
 968     }
 969     NSArray *objects = [self objectsWithContainerName:containerName
 970                                      objectNamePrefix:[objectNamePrefix stringByDeletingLastPathComponent]
 971                                             delimiter:@"/"
 972                                        sharingAccount:nil];
 973     if (objects == nil)
 974         return nil;
 975     if ([objects count] == 0)
 976         return objectName;
 977     NSMutableArray *objectNames = [NSMutableArray arrayWithArray:
 978                                    [[objects objectsAtIndexes:
 979                                      [objects indexesOfObjectsPassingTest:^(ASIPithosObject *pithosObject, NSUInteger idx, BOOL *stop){
 980         if (pithosObject.subdir)
 981             return NO;
 982         return YES;
 983     }]] valueForKey:@"name"]];
 984     for (NSString *name in [[objects objectsAtIndexes:
 985                              [objects indexesOfObjectsPassingTest:^(ASIPithosObject *pithosObject, NSUInteger idx, BOOL *stop){
 986         if (pithosObject.subdir)
 987             return YES;
 988         return NO;
 989     }]] valueForKey:@"name"]) {
 990         [objectNames addObject:[name substringToIndex:([name length] - 1)]];
 991     }
 992     if (![objectNames containsObject:objectName])
 993         return objectName;
 994     NSUInteger objectNameSuffix = 2;
 995     NSString *safeObjectName;
 996     do {
 997         safeObjectName = [objectNamePrefix stringByAppendingFormat:@" %lu%@", objectNameSuffix, objectNameExtraSuffix];
 998         objectNameSuffix++;
 999     } while ([objectNames containsObject:safeObjectName]);
1000     return safeObjectName;
1001 }
1002
1003 // A safe object name at the given container/object path that may be a subdir or application/directory
1004 // The original name has " %d" appended to it, for the first integer that produces a name that is free to use
1005 // If the original name has a "/" suffix, then it is replaced with " %d/" instead
1006 // Subdirs are taken into consideration
1007 + (NSString *)safeSubdirNameForContainerName:(NSString *)containerName subdirName:(NSString *)subdirName {
1008     NSString *subdirNamePrefix;
1009     NSString *subdirNameExtraSuffix;
1010     if ([subdirName hasSuffix:@"/"]) {
1011         subdirNamePrefix = [subdirName substringToIndex:([subdirName length] - 1)];
1012         subdirNameExtraSuffix = [NSString stringWithString:@"/"];
1013     } else {
1014         subdirNamePrefix = [NSString stringWithString:subdirName];
1015         subdirNameExtraSuffix = [NSString string];
1016     }
1017     NSArray *objects = [self objectsWithContainerName:containerName
1018                                      objectNamePrefix:[subdirNamePrefix stringByDeletingLastPathComponent]
1019                                             delimiter:@"/"
1020                                        sharingAccount:nil];
1021     if (objects == nil)
1022         return nil;
1023     if ([objects count] == 0)
1024         return subdirName;
1025     NSMutableArray *objectNames = [NSMutableArray arrayWithArray:
1026                                    [[objects objectsAtIndexes:
1027                                      [objects indexesOfObjectsPassingTest:^(ASIPithosObject *pithosObject, NSUInteger idx, BOOL *stop){
1028         if (pithosObject.subdir)
1029             return NO;
1030         return YES;
1031     }]] valueForKey:@"name"]];
1032     for (NSString *name in [[objects objectsAtIndexes:
1033                              [objects indexesOfObjectsPassingTest:^(ASIPithosObject *pithosObject, NSUInteger idx, BOOL *stop){
1034         if (pithosObject.subdir)
1035             return YES;
1036         return NO;
1037     }]] valueForKey:@"name"]) {
1038         [objectNames addObject:[name substringToIndex:([name length] - 1)]];
1039     }
1040     if (![objectNames containsObject:subdirNamePrefix])
1041         return subdirName;
1042     NSUInteger subdirNameSuffix = 2;
1043     NSString *safeSubdirName;
1044     do {
1045         safeSubdirName = [subdirNamePrefix stringByAppendingFormat:@" %lu", subdirNameSuffix];
1046         subdirNameSuffix++;
1047     } while ([objectNames containsObject:safeSubdirName]);
1048     return [safeSubdirName stringByAppendingString:subdirNameExtraSuffix];
1049 }
1050
1051 #pragma mark -
1052 #pragma mark Alerts
1053
1054 + (NSInteger)httpRequestErrorAlertWithRequest:(ASIPithosRequest *)request {
1055     NSString *message = [NSString stringWithFormat:
1056                          @"HTTP request error: %@\n%@ URL: %@\nRequest Headers: %@\nResponse Headers: %@\nResponse String: %@",
1057                          [request error],
1058                          request.requestMethod,
1059                          request.url,
1060                          [request requestHeaders],
1061                          [request responseHeaders],
1062                          [request responseString]];
1063     NSLog(@"%@", message);
1064     NSAlert *alert = [[[NSAlert alloc] init] autorelease];
1065     [alert setMessageText:@"HTTP Request Error"];
1066     [alert setInformativeText:message];
1067     [alert addButtonWithTitle:@"OK"];
1068     return [alert runModal];
1069 }
1070
1071 + (NSInteger)unexpectedResponseStatusAlertWithRequest:(ASIPithosRequest *)request {
1072     NSString *message = [NSString stringWithFormat:
1073                          @"Unexpected response status %d: %@\n%@ URL: %@\nRequest Headers: %@\nResponse Headers: %@\nResponse String: %@",
1074                          request.responseStatusCode,
1075                          request.responseStatusMessage,
1076                          request.requestMethod,
1077                          request.url,
1078                          [request requestHeaders],
1079                          [request responseHeaders],
1080                          [request responseString]];
1081     NSLog(@"%@", message);
1082     NSAlert *alert = [[[NSAlert alloc] init] autorelease];
1083     [alert setMessageText:@"Unexpected Response Status"];
1084     [alert setInformativeText:message];
1085     [alert addButtonWithTitle:@"OK"];
1086     return [alert runModal];
1087 }
1088
1089 + (NSInteger)fileActionFailedAlertWithTitle:(NSString *)title message:(NSString *)message error:(NSError *)error {
1090     NSAlert *alert = [[[NSAlert alloc] init] autorelease];
1091     [alert setMessageText:title];
1092     if (error)
1093         [alert setInformativeText:[NSString stringWithFormat:@"%@: %@", message, error]];
1094     else
1095         [alert setInformativeText:message];
1096     [alert addButtonWithTitle:@"OK"];
1097     return [alert runModal];
1098 }
1099
1100 #pragma mark -
1101 #pragma mark Request Helper Methods
1102
1103 + (ASIPithosRequest *)prepareRequest:(ASIPithosRequest *)request priority:(NSOperationQueuePriority)priority {
1104     [request setTimeOutSeconds:60];
1105     request.numberOfTimesToRetryOnTimeout = 10;
1106     [request setQueuePriority:priority];
1107     return request;
1108 }
1109
1110 + (ASIPithosRequest *)prepareRequest:(ASIPithosRequest *)request {
1111     return [self prepareRequest:request priority:NSOperationQueuePriorityNormal];
1112 }
1113
1114 + (ASIPithosRequest *)copyRequest:(ASIPithosRequest *)request {
1115     NSMutableDictionary *userInfo = [[request.userInfo retain] autorelease];
1116     request.userInfo = nil;
1117     ASIPithosRequest *newRequest = [request copy];
1118     newRequest.userInfo = userInfo;
1119     return newRequest;
1120 }
1121
1122 @end