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*/
#include "config.h"
#include <stdio.h>
#import "OFZIPArchive.h"
#import "OFArray.h"
#import "OFZIPArchiveEntry.h"
#import "OFDictionary.h"
#import "OFFile.h"
#import "OFChecksumFailedException.h"
#import "OFInvalidArgumentException.h"
#import "OFInvalidFormatException.h"
#import "OFNotImplementedException.h"
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* - Encrypted files cannot be read.
* - Split archives are not supported.
* - Write support is missing.
* - The ZIP has to be a file on the local file system.
* - No support for ZIP64.
*/
@interface OFZIPArchive_FileHeader: OFObject
{
@public
uint16_t _madeWithVersion, _minVersion, _generalPurposeBitFlag;
uint16_t _compressionMethod, _lastModifiedFileTime;
uint16_t _lastModifiedFileDate;
uint32_t _CRC32, _compressedSize, _uncompressedSize;
OFString *_fileName;
OFDataArray *_extraField;
OFString *_fileComment;
uint16_t _startDiskNumber, _internalAttributes;
uint32_t _externalAttributes, _localFileHeaderOffset;
}
- initWithFile: (OFFile*)file;
@end
- (bool)matchesFileHeader: (OFZIPArchive_FileHeader*)fileHeader;
- (bool)matchesEntry: (OFZIPArchiveEntry*)entry;
@end
@interface OFZIPArchive_FileStream: OFStream
{
OFFile *_file;
size_t _size;
uint32_t _expectedCRC32, _CRC32;
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@try {
_file = [[OFFile alloc] initWithPath: path
mode: @"rb"];
_path = [path copy];
[self OF_readZIPInfo];
[self OF_readFileHeaders];
[self OF_readEntries];
} @catch (id e) {
[self release];
@throw e;
}
return self;
}
- (void)dealloc
{
[_file release];
[_path release];
[_archiveComment release];
[_filesInArchive release];
[_fileHeaders release];
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_archiveComment = [[_file
readStringWithLength: commentLength
encoding: OF_STRING_ENCODING_CODEPAGE_437] copy];
objc_autoreleasePoolPop(pool);
}
- (void)OF_readFileHeaders
- (void)OF_readEntries
{
void *pool = objc_autoreleasePoolPush();
size_t i;
[_file seekToOffset: _centralDirectoryOffset
whence: SEEK_SET];
_filesInArchive = [[OFMutableArray alloc] init];
_fileHeaders = [[OFMutableDictionary alloc] init];
OFZIPArchive_FileHeader *fileHeader =
[[[OFZIPArchive_FileHeader alloc]
initWithFile: _file] autorelease];
[_filesInArchive addObject: fileHeader->_fileName];
[_fileHeaders setObject: fileHeader
forKey: fileHeader->_fileName];
[_filesInArchive makeImmutable];
[_fileHeaders makeImmutable];
- (OFArray*)filesInArchive
- (OFDictionary*)entries
{
OF_GETTER(_filesInArchive, true)
OF_GETTER(_entries, true)
}
- (OFString*)archiveComment
{
OF_GETTER(_archiveComment, true)
}
- (OFStream*)streamForReadingFile: (OFString*)path
{
OFStream *ret;
void *pool = objc_autoreleasePoolPush();
OFZIPArchive_FileHeader *fileHeader = [_fileHeaders objectForKey: path];
OFZIPArchiveEntry *entry = [_entries objectForKey: path];
OFZIPArchive_LocalFileHeader *localFileHeader;
if (fileHeader == nil) {
if (entry == nil) {
errno = ENOENT;
@throw [OFOpenFileFailedException exceptionWithPath: path
mode: @"rb"];
}
[_file seekToOffset: fileHeader->_localFileHeaderOffset
[_file seekToOffset: [entry OF_localFileHeaderOffset]
whence: SEEK_SET];
localFileHeader = [[[OFZIPArchive_LocalFileHeader alloc]
initWithFile: _file] autorelease];
if (![localFileHeader matchesFileHeader: fileHeader])
if (![localFileHeader matchesEntry: entry])
@throw [OFInvalidFormatException exception];
if (localFileHeader->_minVersion > 10) {
OFString *version = [OFString stringWithFormat: @"%u.%u",
localFileHeader->_minVersion / 10,
localFileHeader->_minVersion % 10];
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size: localFileHeader->_uncompressedSize
CRC32: localFileHeader->_CRC32];
objc_autoreleasePoolPop(pool);
return [ret autorelease];
}
@end
@implementation OFZIPArchive_FileHeader
- initWithFile: (OFFile*)file
{
self = [super init];
@try {
void *pool = objc_autoreleasePoolPush();
uint16_t fileNameLength, extraFieldLength, fileCommentLength;
of_string_encoding_t encoding;
if ([file readLittleEndianInt32] != 0x02014B50)
@throw [OFInvalidFormatException exception];
_madeWithVersion = [file readLittleEndianInt16];
_minVersion = [file readLittleEndianInt16];
_generalPurposeBitFlag = [file readLittleEndianInt16];
_compressionMethod = [file readLittleEndianInt16];
_lastModifiedFileTime = [file readLittleEndianInt16];
_lastModifiedFileDate = [file readLittleEndianInt16];
_CRC32 = [file readLittleEndianInt32];
_compressedSize = [file readLittleEndianInt32];
_uncompressedSize = [file readLittleEndianInt32];
fileNameLength = [file readLittleEndianInt16];
extraFieldLength = [file readLittleEndianInt16];
fileCommentLength = [file readLittleEndianInt16];
_startDiskNumber = [file readLittleEndianInt16];
_internalAttributes = [file readLittleEndianInt16];
_externalAttributes = [file readLittleEndianInt32];
_localFileHeaderOffset = [file readLittleEndianInt32];
encoding = (_generalPurposeBitFlag & (1 << 11)
? OF_STRING_ENCODING_UTF_8
: OF_STRING_ENCODING_CODEPAGE_437);
_fileName = [[file readStringWithLength: fileNameLength
encoding: encoding] copy];
_extraField = [[file
readDataArrayWithCount: extraFieldLength] retain];
_fileComment = [[file readStringWithLength: fileCommentLength
encoding: encoding] copy];
objc_autoreleasePoolPop(pool);
} @catch (id e) {
[self release];
@throw e;
}
return self;
}
- (void)dealloc
{
[_fileName release];
[_extraField release];
[_fileComment release];
[super dealloc];
}
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{
[_fileName release];
[_extraField release];
[super dealloc];
}
- (bool)matchesFileHeader: (OFZIPArchive_FileHeader*)fileHeader
- (bool)matchesEntry: (OFZIPArchiveEntry*)entry
{
if (_minVersion != fileHeader->_minVersion ||
_generalPurposeBitFlag != fileHeader->_generalPurposeBitFlag ||
_compressionMethod != fileHeader->_compressionMethod ||
_lastModifiedFileTime != fileHeader->_lastModifiedFileTime ||
_lastModifiedFileDate != fileHeader->_lastModifiedFileDate ||
_CRC32 != fileHeader->_CRC32 ||
_compressedSize != fileHeader->_compressedSize ||
_uncompressedSize != fileHeader->_uncompressedSize ||
![_fileName isEqual: fileHeader->_fileName])
if (_minVersion != [entry OF_minVersion] ||
_generalPurposeBitFlag != [entry OF_generalPurposeBitFlag] ||
_compressionMethod != [entry OF_compressionMethod] ||
_lastModifiedFileTime != [entry OF_lastModifiedFileTime] ||
_lastModifiedFileDate != [entry OF_lastModifiedFileDate] ||
_CRC32 != [entry CRC32] ||
_compressedSize != [entry compressedSize] ||
_uncompressedSize != [entry uncompressedSize] ||
![_fileName isEqual: [entry fileName]])
return false;
return true;
}
@end
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