mirror of
https://github.com/samsonjs/arq_restore.git
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103 lines
4.1 KiB
Objective-C
103 lines
4.1 KiB
Objective-C
/*
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Copyright (c) 2009-2011, Stefan Reitshamer http://www.haystacksoftware.com
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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* Neither the names of PhotoMinds LLC or Haystack Software, nor the names of
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their contributors may be used to endorse or promote products derived from
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this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
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TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#import "Blob.h"
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#import "DataInputStreamFactory.h"
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#import "NSData-Base64Extensions.h"
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#import "EncryptedInputStreamFactory.h"
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#import "NSData-Encrypt.h"
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@implementation Blob
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- (id)initWithInputStreamFactory:(id <InputStreamFactory>)theFactory mimeType:(NSString *)theMimeType downloadName:(NSString *)theDownloadName {
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if (self = [super init]) {
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mimeType = [theMimeType copy];
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downloadName = [theDownloadName copy];
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inputStreamFactory = [theFactory retain];
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}
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return self;
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}
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- (id)initWithData:(NSData *)theData mimeType:(NSString *)theMimeType downloadName:(NSString *)theDownloadName dataDescription:(NSString *)theDataDescription {
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if (self = [super init]) {
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mimeType = [theMimeType copy];
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downloadName = [theDownloadName copy];
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inputStreamFactory = [[DataInputStreamFactory alloc] initWithData:theData dataDescription:theDataDescription];
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}
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return self;
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}
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- (void)dealloc {
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[mimeType release];
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[downloadName release];
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[inputStreamFactory release];
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[super dealloc];
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}
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- (NSString *)mimeType {
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return mimeType;
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}
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- (NSString *)downloadName {
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return downloadName;
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}
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- (id <InputStreamFactory>)inputStreamFactory {
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return inputStreamFactory;
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}
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- (NSData *)slurp:(NSError **)error {
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id <InputStream> is = [inputStreamFactory newInputStream];
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NSData *data = [is slurp:error];
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[is release];
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return data;
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}
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- (Blob *)encryptedBlobWithCryptoKey:(CryptoKey *)theCryptoKey error:(NSError **)error {
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NSString *base64EncryptedDownloadName = nil;
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if (downloadName != nil) {
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NSData *encryptedDownloadNameData = [[downloadName dataUsingEncoding:NSUTF8StringEncoding] encryptWithCryptoKey:theCryptoKey error:error];
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if (encryptedDownloadNameData == nil) {
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return nil;
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}
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base64EncryptedDownloadName = [encryptedDownloadNameData encodeBase64];
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}
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EncryptedInputStreamFactory *eisf = [[EncryptedInputStreamFactory alloc] initWithCryptoKey:theCryptoKey underlyingFactory:inputStreamFactory];
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NSString *dataDescription = [eisf description];
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id <InputStream> is = [eisf newInputStream];
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NSData *encryptedData = [is slurp:error];
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[is release];
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[eisf release];
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if (encryptedData == nil) {
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return nil;
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}
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Blob *blob = [[[Blob alloc] initWithData:encryptedData mimeType:mimeType downloadName:base64EncryptedDownloadName dataDescription:dataDescription] autorelease];
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return blob;
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}
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#pragma mark NSObject
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- (NSString *)description {
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return [NSString stringWithFormat:@"<Blob: %@>", [inputStreamFactory description]];
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}
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@end
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