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   1 //
   2 //  PithosLocalObjectState.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 "PithosLocalObjectState.h"
  39 #import "PithosUtilities.h"
  40 #import "HashMapHash.h"
  41
  42 @implementation PithosLocalObjectState
  43 @synthesize filePath, isDirectory, hash, tmpFilePath, fileModificationDate, fileSize;
  44
  45 #pragma mark -
  46 #pragma mark Object Lifecycle
  47
  48 - (id)initWithFile:(NSString *)aFilePath blockHash:(NSString *)blockHash blockSize:(NSUInteger)blockSize {
  49     if ((self = [self init])) {
  50         self.filePath = aFilePath;
  51         if ([[NSFileManager defaultManager] fileExistsAtPath:filePath isDirectory:&isDirectory] && !isDirectory) {
  52             self.hash = [HashMapHash calculateHashMapHash:[HashMapHash calculateObjectHashMap:filePath
  53                                                                                 withBlockHash:blockHash
  54                                                                                  andBlockSize:blockSize]];
  55         }
  56     }
  57     return self;
  58 }
  59
  60 - (id)initWithHash:(NSString *)aHash directory:(BOOL)anIsDirectory {
  61     if ((self = [self init])) {
  62         if (anIsDirectory)
  63             isDirectory = YES;
  64         else if ([aHash length] == 64)
  65             self.hash = aHash;
  66     }
  67     return self;
  68 }
  69
  70 + (id)localObjectState {
  71     return [[[self alloc] init] autorelease];
  72 }
  73
  74 + (id)localObjectStateWithFile:(NSString *)aFilePath blockHash:(NSString *)blockHash blockSize:(NSUInteger)blockSize {
  75     return [[[self alloc] initWithFile:aFilePath blockHash:blockHash blockSize:blockSize] autorelease];
  76 }
  77
  78 + (id)localObjectStateWithHash:(NSString *)aHash directory:(BOOL)anIsDirectory {
  79     return [[[self alloc] initWithHash:aHash directory:anIsDirectory] autorelease];
  80 }
  81
  82 - (void)dealloc {
  83     [fileSize release];
  84     [fileModificationDate release];
  85     self.tmpFilePath = nil;
  86     [filePath release];
  87     [hash release];
  88     [super dealloc];
  89 }
  90
  91 - (NSString *)description {
  92     return [NSString stringWithFormat:@"hash: %@, filePath: %@, isDirectory: %d, fileModificationDate: %@, fileSize: %@",
  93             hash, filePath, isDirectory, fileModificationDate, fileSize];
  94 }
  95
  96 - (BOOL)isEqualToState:(PithosLocalObjectState *)aState {
  97     if (self.isDirectory)
  98         // Object is a directory, check the other
  99         return aState.isDirectory;
 100     else if (aState.isDirectory)
 101         // Object is not a directory, while the other is
 102         return NO;
 103     else if (![self exists])
 104         // Object doesn't exist, check the other
 105         return (![aState exists]);
 106     else if (![aState exists])
 107         // Object exists, while the other doesn't
 108         return NO;
 109     else
 110         // Both objects exist, check that they have the same hash
 111         return [self.hash isEqualToString:aState.hash];
 112 }
 113
 114 #pragma mark -
 115 #pragma mark Properties
 116
 117 - (void)setIsDirectory:(BOOL)anIsDirectory {
 118     isDirectory = anIsDirectory;
 119     if (isDirectory) {
 120         self.hash = nil;
 121         self.tmpFilePath = nil;
 122     }
 123 }
 124
 125 - (void)setTmpFilePath:(NSString *)aTmpFilePath {
 126     if (![tmpFilePath isEqualToString:aTmpFilePath]) {
 127         if (!aTmpFilePath) {
 128             NSFileManager *fileManager = [NSFileManager defaultManager];
 129             if ([fileManager fileExistsAtPath:tmpFilePath]) {
 130                 NSError *error = nil;
 131                 if (![fileManager removeItemAtPath:tmpFilePath error:&error] || error)
 132                     [PithosUtilities fileActionFailedAlertWithTitle:@"Remove File Error"
 133                                                             message:[NSString stringWithFormat:@"Cannot remove file at '%@'", tmpFilePath]
 134                                                               error:error];
 135             }
 136         }
 137         [tmpFilePath release];
 138         tmpFilePath = [aTmpFilePath retain];
 139     }
 140 }
 141
 142 - (void)setHash:(NSString *)aHash {
 143     [hash release];
 144     if ([aHash length] == 64)
 145         hash = [aHash retain];
 146     else
 147         hash = nil;
 148     if (filePath) {
 149         NSDictionary *attributes = [[NSFileManager defaultManager] attributesOfItemAtPath:filePath error:nil];
 150         self.fileModificationDate = [attributes objectForKey:NSFileModificationDate];
 151         self.fileSize = [attributes objectForKey:NSFileSize];
 152     } else {
 153         self.fileModificationDate = nil;
 154         self.fileSize = nil;
 155     }
 156 }
 157
 158 #pragma mark -
 159 #pragma mark Methods
 160
 161 - (BOOL)exists {
 162     return (isDirectory || hash);
 163 }
 164
 165 - (BOOL)isModified {
 166     NSDictionary *attributes = [[NSFileManager defaultManager] attributesOfItemAtPath:filePath error:nil];
 167     return (![fileSize isEqualToNumber:[attributes objectForKey:NSFileSize]] ||
 168             ![fileModificationDate isEqualToDate:[attributes objectForKey:NSFileModificationDate]]);
 169 }
 170
 171 #pragma mark -
 172 #pragma mark NSCoding
 173
 174 - (id)initWithCoder:(NSCoder *)decoder {
 175     if ((self = [super init])) {
 176         self.hash = [decoder decodeObjectForKey:@"hash"];
 177         self.filePath = [decoder decodeObjectForKey:@"filePath"];
 178         self.isDirectory = [decoder decodeBoolForKey:@"isDirectory"];
 179         self.tmpFilePath = [decoder decodeObjectForKey:@"tmpFilePath"];
 180         self.fileModificationDate = [decoder decodeObjectForKey:@"fileModificationDate"];
 181         self.fileSize = [decoder decodeObjectForKey:@"fileSize"];
 182     }
 183     return self;
 184 }
 185
 186 - (void)encodeWithCoder:(NSCoder *)encoder {
 187     [encoder encodeObject:hash forKey:@"hash"];
 188     [encoder encodeObject:filePath forKey:@"filePath"];
 189     [encoder encodeBool:isDirectory forKey:@"isDirectory"];
 190     [encoder encodeObject:tmpFilePath forKey:@"tmpFilePath"];
 191     [encoder encodeObject:fileModificationDate forKey:@"fileModificationDate"];
 192     [encoder encodeObject:fileSize forKey:@"fileSize"];
 193 }
 194
 195 @end