/*
* Copyright (c) 2008-2024 Jonathan Schleifer <js@nil.im>
*
* All rights reserved.
*
* This file is part of ObjFW. It may be distributed under the terms of the
* Q Public License 1.0, which can be found in the file LICENSE.QPL included in
* the packaging of this file.
*
* Alternatively, it may be distributed under the terms of the GNU General
* Public License, either version 2 or 3, which can be found in the file
* LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
* file.
*/
#include "config.h"
#import "OFZooArchiveEntry.h"
#import "OFZooArchiveEntry+Private.h"
#import "OFDate.h"
#import "OFNumber.h"
#import "OFSeekableStream.h"
#import "OFStream.h"
#import "OFString.h"
#import "OFInvalidFormatException.h"
@implementation OFZooArchiveEntry
@synthesize compressionMethod = _compressionMethod, CRC16 = _CRC16;
@synthesize uncompressedSize = _uncompressedSize;
@synthesize compressedSize = _compressedSize, deleted = _deleted;
@synthesize fileComment = _fileComment, POSIXPermissions = _POSIXPermissions;
- (instancetype)init
{
OF_INVALID_INIT_METHOD
}
- (instancetype)of_initWithStream: (OF_KINDOF(OFStream *))stream
encoding: (OFStringEncoding)encoding
{
self = [super init];
@try {
void *pool = objc_autoreleasePoolPush();
uint8_t majorVersion;
char fileNameBuffer[13];
uint32_t commentOffset;
uint16_t commentLength;
if ([stream readLittleEndianInt32] != 0xFDC4A7DC)
@throw [OFInvalidFormatException exception];
/* Type seems to be always 2 */
if ([stream readInt8] != 2)
@throw [OFInvalidFormatException exception];
_compressionMethod = [stream readInt8];
_nextHeaderOffset = [stream readLittleEndianInt32];
_dataOffset = [stream readLittleEndianInt32];
_lastModifiedFileDate = [stream readLittleEndianInt16];
_lastModifiedFileTime = [stream readLittleEndianInt16];
_CRC16 = [stream readLittleEndianInt16];
_uncompressedSize = [stream readLittleEndianInt32];
_compressedSize = [stream readLittleEndianInt32];
majorVersion = [stream readInt8];
/* Minor version */
[stream readInt8];
_deleted = [stream readInt8];
/* Unknown. Most likely padding to get to 2 byte alignment? */
[stream readInt8];
commentOffset = [stream readLittleEndianInt32];
commentLength = [stream readLittleEndianInt16];
[stream readIntoBuffer: fileNameBuffer exactLength: 13];
if (fileNameBuffer[12] != '\0')
fileNameBuffer[12] = '\0';
if (majorVersion == 2) {
uint16_t extraLength = [stream readLittleEndianInt16];
uint8_t fileNameLength, directoryNameLength;
if (extraLength < 10)
@throw [OFInvalidFormatException exception];
/* Time zone */
[stream readInt8];
/* CRC16 of the header */
[stream readLittleEndianInt16];
fileNameLength = [stream readInt8];
directoryNameLength = [stream readInt8];
extraLength -= 2;
if (fileNameLength > 0) {
if (extraLength < fileNameLength)
@throw [OFInvalidFormatException
exception];
_fileName = [[stream
readStringWithLength: fileNameLength
encoding: encoding] copy];
extraLength -= fileNameLength;
} else
_fileName = [[OFString alloc]
initWithCString: fileNameBuffer
encoding: encoding];
if (directoryNameLength > 0) {
if (extraLength < directoryNameLength)
@throw [OFInvalidFormatException
exception];
_directoryName = [[stream
readStringWithLength: directoryNameLength
encoding: encoding] copy];
extraLength -= directoryNameLength;
}
if (extraLength >= 2) {
/* System ID */
[stream readLittleEndianInt16];
extraLength -= 2;
}
if (extraLength >= 3) {
uint8_t attributes[3];
[stream readIntoBuffer: attributes
exactLength: 3];
if (attributes[2] & (1 << 6)) {
uint16_t mode = (attributes[0] |
(attributes[1] << 8)) & 0777;
_POSIXPermissions = [[OFNumber alloc]
initWithUnsignedShort: mode];
}
extraLength -= 3;
}
} else
_fileName = [[OFString alloc]
initWithCString: fileNameBuffer
encoding: encoding];
if (commentOffset != 0) {
[stream seekToOffset: commentOffset whence: OFSeekSet];
_fileComment = [[stream
readStringWithLength: commentLength
encoding: encoding] retain];
}
objc_autoreleasePoolPop(pool);
} @catch (id e) {
[self release];
@throw e;
}
return self;
}
- (void)dealloc
{
[_fileComment release];
[_fileName release];
[_directoryName release];
[_POSIXPermissions release];
[super dealloc];
}
- (id)copy
{
return [self retain];
}
- (OFString *)fileName
{
if (_directoryName == nil)
return _fileName;
return [OFString stringWithFormat: @"%@/%@", _directoryName, _fileName];
}
- (OFDate *)modificationDate
{
void *pool = objc_autoreleasePoolPush();
uint16_t year = ((_lastModifiedFileDate & 0xFE00) >> 9) + 1980;
uint8_t month = (_lastModifiedFileDate & 0x1E0) >> 5;
uint8_t day = (_lastModifiedFileDate & 0x1F);
uint8_t hour = (_lastModifiedFileTime & 0xF800) >> 11;
uint8_t minute = (_lastModifiedFileTime & 0x7E0) >> 5;
uint8_t second = (_lastModifiedFileTime & 0x1F) << 1;
OFDate *date;
OFString *dateString;
dateString = [OFString
stringWithFormat: @"%04u-%02u-%02u %02u:%02u:%02u",
year, month, day, hour, minute, second];
date = [[OFDate alloc] initWithLocalDateString: dateString
format: @"%Y-%m-%d %H:%M:%S"];
objc_autoreleasePoolPop(pool);
return [date autorelease];
}
- (OFString *)description
{
void *pool = objc_autoreleasePoolPush();
OFString *ret = [OFString stringWithFormat:
@"<%@: \n"
@"\tFile name = %@\n"
@"\tFile comment = %@\n"
@"\tCompressed size = %llu\n"
@"\tUncompressed size = %llu\n"
@"\tCompression method = %u\n"
@"\tModification date = %@\n"
@"\tCRC16 = %04" @PRIX16 @"\n"
@"\tDeleted = %u\n"
@">",
self.class, _fileName, _fileComment, _compressedSize,
_uncompressedSize, _compressionMethod, self.modificationDate,
_CRC16, _deleted];
[ret retain];
objc_autoreleasePoolPop(pool);
return [ret autorelease];
}
@end