ObjFW  Check-in [1c78b3a4db]

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				4BE52D2017B990B4005958D1 /* OFZIPArchive.m */,
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				4BB52CC817B8EA8E00B7EBF5 /* apple-forwarding-arm.S */,
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				4B6799561099E7C50041064A /* asprintf.h */,
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				4B3D23E41337FCB000DD29B8 /* ObjFW.h in Headers */,
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				4B837D7A16829C5F007A3E83 /* instance.h in Headers */,

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				4B90B7A2133AD87D00BD33CB /* OFBindFailedException.h in Headers */,
				4B067FBB177BA6F900B8CFDA /* OFChangeCurrentDirectoryPathFailedException.h in Headers */,
				4B067FBD177BA6F900B8CFDA /* OFChangeOwnerFailedException.h in Headers */,
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				4BE52D2517B990DA005958D1 /* OFChecksumFailedException.h in Headers */,
				4B29BC58133AC8540004B236 /* OFConditionBroadcastFailedException.h in Headers */,
				4B29BC59133AC8540004B236 /* OFConditionSignalFailedException.h in Headers */,
				4B7FF3B4133CED6200000324 /* OFConditionStillWaitingException.h in Headers */,
				4B29BC5A133AC8540004B236 /* OFConditionWaitFailedException.h in Headers */,
				4B90B7A4133AD87D00BD33CB /* OFConnectionFailedException.h in Headers */,
				4B29BC4E133AC7DD0004B236 /* OFCopyFileFailedException.h in Headers */,
				4B29BC3F133AC4E80004B236 /* OFCreateDirectoryFailedException.h in Headers */,

				4B49EA72143B3A090005BBC6 /* OFXMLComment.m in Sources */,
				4B3D23AF1337FC0D00DD29B8 /* OFXMLElement.m in Sources */,
				4BB25E8D139C388A00F574EA /* OFXMLElement+Serialization.m in Sources */,
				4B3D23B01337FC0D00DD29B8 /* OFXMLElementBuilder.m in Sources */,
				4B11005D14329B9A003A45D8 /* OFXMLNode.m in Sources */,
				4B3D23B11337FC0D00DD29B8 /* OFXMLParser.m in Sources */,
				4B48B95514DC23B100546D39 /* OFXMLProcessingInstructions.m in Sources */,
				4BE52D2217B990B4005958D1 /* OFZIPArchive.m in Sources */,
				4B3D23B31337FC0D00DD29B8 /* base64.m in Sources */,
				4BB52CC717B8EA7F00B7EBF5 /* codepage_437.m in Sources */,
				4B3D23B41337FC0D00DD29B8 /* iso_8859_15.m in Sources */,
				4BEF2D3117A5BF5200BB8BA3 /* forwarding.S in Sources */,
				4B3D23B51337FC0D00DD29B8 /* foundation-compat.m in Sources */,
				4B3D23EE1337FFD000DD29B8 /* of_asprintf.m in Sources */,
				4BA355BA14879BDD00442EF4 /* of_strptime.m in Sources */,
				4B3D23B91337FC0D00DD29B8 /* unicode.m in Sources */,
				4B3D23BA1337FC0D00DD29B8 /* windows_1252.m in Sources */,
				4B90B79F133AD87D00BD33CB /* OFAcceptFailedException.m in Sources */,
				4B90B7A1133AD87D00BD33CB /* OFAddressTranslationFailedException.m in Sources */,
				4B17FF80133A2D17003E6DCD /* OFAllocFailedException.m in Sources */,
				4B90B78E133AD46700BD33CB /* OFAlreadyConnectedException.m in Sources */,
				4B90B7A3133AD87D00BD33CB /* OFBindFailedException.m in Sources */,
				4B067FBC177BA6F900B8CFDA /* OFChangeCurrentDirectoryPathFailedException.m in Sources */,
				4B067FBE177BA6F900B8CFDA /* OFChangeOwnerFailedException.m in Sources */,
				4B067FC0177BA6F900B8CFDA /* OFChangePermissionsFailedException.m in Sources */,
				4BE52D2617B990DA005958D1 /* OFChecksumFailedException.m in Sources */,
				4B8B170D133A3C11007CD8B3 /* OFConditionBroadcastFailedException.m in Sources */,
				4B8B170E133A3C11007CD8B3 /* OFConditionSignalFailedException.m in Sources */,
				4B7FF3B5133CED6200000324 /* OFConditionStillWaitingException.m in Sources */,
				4B8B170F133A3C11007CD8B3 /* OFConditionWaitFailedException.m in Sources */,
				4B90B7A5133AD87D00BD33CB /* OFConnectionFailedException.m in Sources */,
				4B29BC4F133AC7DD0004B236 /* OFCopyFileFailedException.m in Sources */,
				4B29BC40133AC4E80004B236 /* OFCreateDirectoryFailedException.m in Sources */,

       OFXMLComment.m			\
       OFXMLElement.m			\
       OFXMLElement+Serialization.m	\
       OFXMLElementBuilder.m		\
       OFXMLNode.m			\
       OFXMLParser.m			\
       OFXMLProcessingInstructions.m	\
       OFZIPArchive.m			\
       base64.m				\
       of_asprintf.m			\
       of_strptime.m			\
       unicode.m			\
       ${USE_SRCS_PLUGINS}		\
       ${USE_SRCS_SOCKETS}		\
       ${USE_SRCS_THREADS}

	while (iter != NULL) {
		struct pre_mem *next = iter->next;

		/*
		 * We can use owner as a sentinel to prevent exploitation in
		 * case there is a buffer underflow somewhere.
		 */
		OF_ENSURE(iter->owner == self);


		free(iter);

		iter = next;
	}

	free((char*)self - PRE_IVARS_ALIGN);

/*
 * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013
 *   Jonathan Schleifer <js@webkeks.org>
 *
 * 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.
 */

#import "OFObject.h"
#import "OFString.h"

@class OFFile;
@class OFMutableArray;
@class OFMutableDictionary;
@class OFStream;

/*!
 * @brief A class for accessing and manipulating ZIP files.
 */
@interface OFZIPArchive: OFObject
{
	OFFile *_file;
	OFString *_path;
	uint16_t _diskNumber, _centralDirectoryDisk;
	uint16_t _centralDirectoryEntriesInDisk, _centralDirectoryEntries;
	uint32_t _centralDirectorySize, _centralDirectoryOffset;
	OFString *_archiveComment;
	OFMutableArray *_filesInArchive;
	OFMutableDictionary *_fileHeaders;
}

#ifdef OF_HAVE_PROPERTIES
@property (readonly, copy) OFString *archiveComment;
@property (readonly, copy) OFArray *filesInArchive;
#endif

/*!
 * @brief Creates a new OFZIPArchive object for the specified file.
 *
 * @param path The path to the ZIP file
 * @return A new, autoreleased OFZIPArchive
 */
+ (instancetype)archiveWithFile: (OFString*)path;

/*!
 * @brief Initializes an already allocated OFZIPArchive object for the
 *	  specified file.
 *
 * @param path The path to the ZIP file
 * @return An Initialized OFZIPArchive
 */
- initWithFile: (OFString*)path;

/*!
 * @brief Returns an array with the names of all files in the archive.
 *
 * @return An array with the names of all files in the archive
 */
- (OFArray*)filesInArchive;

/*!
 * @brief Returns the archive comment.
 *
 * @return The archive comment
 */
- (OFString*)archiveComment;

/*!
 * @brief Returns a stream for reading the specified file from the archive.
 *
 * @param path The path to the file inside the archive
 * @return A stream for reading the specified file form the archive
 */
- (OFStream*)streamForReadingFile: (OFString*)path;

- (void)OF_readZIPInfo;
- (void)OF_readFileHeaders;
@end

/*
 * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013
 *   Jonathan Schleifer <js@webkeks.org>
 *
 * 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"

#include <stdio.h>

#import "OFZIPArchive.h"
#import "OFArray.h"
#import "OFDictionary.h"
#import "OFFile.h"

#import "OFChecksumFailedException.h"
#import "OFInvalidArgumentException.h"
#import "OFInvalidFormatException.h"
#import "OFNotImplementedException.h"
#import "OFOpenFileFailedException.h"
#import "OFReadFailedException.h"
#import "OFUnsupportedVersionException.h"

#import "autorelease.h"
#import "macros.h"

#define CRC32_MAGIC 0xEDB88320

/*
 * FIXME: Current limitations:
 *  - Compressed files cannot be read.
 *  - 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

@interface OFZIPArchive_LocalFileHeader: OFObject
{
@public
	uint16_t _minVersion, _generalPurposeBitFlag, _compressionMethod;
	uint16_t _lastModifiedFileTime, _lastModifiedFileDate;
	uint32_t _CRC32, _compressedSize, _uncompressedSize;
	OFString *_fileName;
	OFDataArray *_extraField;
}

- initWithFile: (OFFile*)file;
- (bool)matchesFileHeader: (OFZIPArchive_FileHeader*)fileHeader;
@end

@interface OFZIPArchive_FileStream: OFStream
{
	OFFile *_file;
	size_t _size;
	uint32_t _expectedCRC32, _CRC32;
	bool _atEndOfStream;
}

- initWithArchiveFile: (OFString*)path
	       offset: (off_t)offset
		 size: (size_t)size
		CRC32: (uint32_t)CRC32;
@end

static uint32_t
crc32(uint32_t crc, uint8_t *bytes, size_t length)
{
	size_t i;

	for (i = 0; i < length; i++) {
		uint_fast8_t j;

		crc ^= bytes[i];

		for (j = 0; j < 8; j++)
			crc = (crc >> 1) ^ (CRC32_MAGIC & (~(crc & 1) + 1));
	}

	return crc;
}

@implementation OFZIPArchive
+ (instancetype)archiveWithFile: (OFString*)path
{
	return [[[self alloc] initWithFile: path] autorelease];
}

- initWithFile: (OFString*)path
{
	self = [super init];

	@try {
		_file = [[OFFile alloc] initWithPath: path
						mode: @"rb"];
		_path = [path copy];

		[self OF_readZIPInfo];
		[self OF_readFileHeaders];
	} @catch (id e) {
		[self release];
		@throw e;
	}

	return self;
}

- (void)dealloc
{
	[_file release];
	[_path release];
	[_archiveComment release];
	[_filesInArchive release];
	[_fileHeaders release];

	[super dealloc];
}

- (void)OF_readZIPInfo
{
	void *pool = objc_autoreleasePoolPush();
	uint16_t commentLength;

	[_file seekToOffset: -22
		     whence: SEEK_END];

	if ([_file readLittleEndianInt32] != 0x06054B50)
		@throw [OFInvalidFormatException exception];

	_diskNumber = [_file readLittleEndianInt16],
	_centralDirectoryDisk = [_file readLittleEndianInt16];
	_centralDirectoryEntriesInDisk = [_file readLittleEndianInt16];
	_centralDirectoryEntries = [_file readLittleEndianInt16];
	_centralDirectorySize = [_file readLittleEndianInt32];
	_centralDirectoryOffset = [_file readLittleEndianInt32];

	commentLength = [_file readLittleEndianInt16];
	_archiveComment = [[_file
	    readStringWithLength: commentLength
			encoding: OF_STRING_ENCODING_CODEPAGE_437] copy];

	objc_autoreleasePoolPop(pool);
}

- (void)OF_readFileHeaders
{
	void *pool = objc_autoreleasePoolPush();
	size_t i;

	[_file seekToOffset: _centralDirectoryOffset
		     whence: SEEK_SET];

	_filesInArchive = [[OFMutableArray alloc] init];
	_fileHeaders = [[OFMutableDictionary alloc] init];

	for (i = 0; i < _centralDirectoryEntries; i++) {
		OFZIPArchive_FileHeader *fileHeader =
		    [[[OFZIPArchive_FileHeader alloc]
		    initWithFile: _file] autorelease];

		[_filesInArchive addObject: fileHeader->_fileName];
		[_fileHeaders setObject: fileHeader
				 forKey: fileHeader->_fileName];
	}

	[_filesInArchive makeImmutable];
	[_fileHeaders makeImmutable];

	objc_autoreleasePoolPop(pool);
}

- (OFArray*)filesInArchive
{
	OF_GETTER(_filesInArchive, true)
}

- (OFString*)archiveComment
{
	OF_GETTER(_archiveComment, true)
}

- (OFStream*)streamForReadingFile: (OFString*)path
{
	OFStream *ret;
	void *pool = objc_autoreleasePoolPush();
	OFZIPArchive_FileHeader *fileHeader = [_fileHeaders objectForKey: path];
	OFZIPArchive_LocalFileHeader *localFileHeader;

	if (fileHeader == nil) {
		errno = ENOENT;
		@throw [OFOpenFileFailedException exceptionWithPath: path
							       mode: @"rb"];
	}

	[_file seekToOffset: fileHeader->_localFileHeaderOffset
		     whence: SEEK_SET];
	localFileHeader = [[[OFZIPArchive_LocalFileHeader alloc]
	    initWithFile: _file] autorelease];

	if (![localFileHeader matchesFileHeader: fileHeader])
		@throw [OFInvalidFormatException exception];

	if (localFileHeader->_minVersion > 10) {
		OFString *version = [OFString stringWithFormat: @"%u.%u",
		    localFileHeader->_minVersion / 10,
		    localFileHeader->_minVersion % 10];

		@throw [OFUnsupportedVersionException
		    exceptionWithVersion: version];
	}

	if (localFileHeader->_compressionMethod != 0)
		@throw [OFNotImplementedException exceptionWithSelector: _cmd
								 object: self];

	ret = [[OFZIPArchive_FileStream alloc]
	    initWithArchiveFile: _path
			 offset: [_file seekToOffset: 0
					      whence: SEEK_CUR]
			   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];
}
@end

@implementation OFZIPArchive_LocalFileHeader
- initWithFile: (OFFile*)file
{
	self = [super init];

	@try {
		uint16_t fileNameLength, extraFieldLength;
		of_string_encoding_t encoding;

		if ([file readLittleEndianInt32] != 0x04034B50)
			@throw [OFInvalidFormatException exception];

		_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];
		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];
	} @catch (id e) {
		[self release];
		@throw e;
	}

	return self;
}

- (void)dealloc
{
	[_fileName release];
	[_extraField release];

	[super dealloc];
}

- (bool)matchesFileHeader: (OFZIPArchive_FileHeader*)fileHeader
{
	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])
		return false;

	return true;
}

@end

@implementation OFZIPArchive_FileStream
- initWithArchiveFile: (OFString*)path
	       offset: (off_t)offset
		 size: (size_t)size
		CRC32: (uint32_t)CRC32
{
	self = [super init];

	@try {
		_file = [[OFFile alloc] initWithPath: path
						mode: @"rb"];
		[_file seekToOffset: offset
			     whence: SEEK_SET];

		_size = size;
		_CRC32 = ~0;
		_expectedCRC32 = CRC32;
	} @catch (id e) {
		[self release];
		@throw e;
	}

	return self;
}

- (void)dealloc
{
	[_file release];

	[super dealloc];
}

- (bool)lowlevelIsAtEndOfStream
{
	return _atEndOfStream;
}

- (size_t)lowlevelReadIntoBuffer: (void*)buffer
			  length: (size_t)length
{
	size_t min, ret;

	if (_atEndOfStream)
		@throw [OFReadFailedException exceptionWithStream: self
						  requestedLength: length];

	if (_size == 0) {
		_atEndOfStream = true;

		if (~_CRC32 != _expectedCRC32)
			@throw [OFChecksumFailedException exception];

		return 0;
	}

	if (length < _size)
		min = length;
	else
		min = _size;

	ret = [_file readIntoBuffer: buffer
			     length: min];
	_size -= ret;
	_CRC32 = crc32(_CRC32, buffer, ret);

	return ret;
}
@end

#import "OFNumber.h"
#import "OFDate.h"
#import "OFURL.h"

#import "OFStream.h"
#import "OFStdIOStream.h"
#import "OFFile.h"
#import "OFZIPArchive.h"
#ifdef OF_HAVE_SOCKETS
# import "OFStreamSocket.h"
# import "OFTCPSocket.h"
# import "OFTLSSocket.h"
# import "OFStreamObserver.h"

# import "OFHTTPRequest.h"

include ../../extra.mk

STATIC_PIC_LIB_NOINST = ${EXCEPTIONS_LIB_A}
STATIC_LIB_NOINST = ${EXCEPTIONS_A}

SRCS = OFAllocFailedException.m				\
       OFChangeCurrentDirectoryPathFailedException.m	\
       OFChangeOwnerFailedException.m			\
       OFChangePermissionsFailedException.m		\
       OFChecksumFailedException.m			\
       OFCopyFileFailedException.m			\
       OFCreateDirectoryFailedException.m		\
       OFCreateSymbolicLinkFailedException.m		\
       OFEnumerationMutationException.m			\
       OFException.m					\
       OFHashAlreadyCalculatedException.m		\
       OFInitializationFailedException.m		\

/*
 * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013
 *   Jonathan Schleifer <js@webkeks.org>
 *
 * 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.
 */

#import "OFException.h"

/*!
 * @brief An exception indicating that a checksum did not match.
 */
@interface OFChecksumFailedException: OFException
@end

/*
 * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013
 *   Jonathan Schleifer <js@webkeks.org>
 *
 * 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 "OFChecksumFailedException.h"
#import "OFString.h"

@implementation OFChecksumFailedException
- (OFString*)description
{
	return @"Checksum mismatch!";
}
@end