/*
* Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016
* Jonathan Schleifer <js@heap.zone>
*
* 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 <errno.h>
#import "OFDate.h"
#import "OFSet.h"
#import "OFApplication.h"
#import "OFFileManager.h"
#import "OFStdIOStream.h"
#import "ZIPArchive.h"
#import "OFZIP.h"
#import "OFInvalidFormatException.h"
#import "OFOpenItemFailedException.h"
#ifndef S_IRWXG
# define S_IRWXG 0
#endif
#ifndef S_IRWXO
# define S_IRWXO 0
#endif
static OFZIP *app;
static void
setPermissions(OFString *path, OFZIPArchiveEntry *entry)
{
#ifdef OF_HAVE_CHMOD
if (([entry versionMadeBy] >> 8) ==
OF_ZIP_ARCHIVE_ENTRY_ATTR_COMPAT_UNIX) {
uint32_t mode = [entry versionSpecificAttributes] >> 16;
/* Only allow modes that are safe */
mode &= (S_IRWXU | S_IRWXG | S_IRWXO);
[[OFFileManager defaultManager]
changePermissionsOfItemAtPath: path
permissions: mode];
}
#endif
}
@implementation ZIPArchive
+ (void)initialize
{
if (self == [ZIPArchive class])
app = [[OFApplication sharedApplication] delegate];
}
+ (instancetype)archiveWithFile: (OFFile*)file
{
return [[[self alloc] initWithFile: file] autorelease];
}
- initWithFile: (OFFile*)file
{
self = [super init];
@try {
_archive = [[OFZIPArchive alloc] initWithSeekableStream: file];
} @catch (id e) {
[self release];
@throw e;
}
return self;
}
- (void)dealloc
{
[_archive release];
[super dealloc];
}
- (void)listFiles
{
for (OFZIPArchiveEntry *entry in [_archive entries]) {
void *pool = objc_autoreleasePoolPush();
[of_stdout writeLine: [entry fileName]];
if (app->_outputLevel >= 1) {
OFString *date = [[entry modificationDate]
localDateStringWithFormat: @"%Y-%m-%d %H:%M:%S"];
[of_stdout writeFormat:
@"\tCompressed: %" PRIu64 @" bytes\n"
@"\tUncompressed: %" PRIu64 @" bytes\n"
@"\tCRC32: %08X\n"
@"\tModification date: %@\n",
[entry compressedSize], [entry uncompressedSize],
[entry CRC32], date];
if (app->_outputLevel >= 2) {
uint16_t versionMadeBy = [entry versionMadeBy];
[of_stdout writeFormat:
@"\tVersion made by: %@\n"
@"\tMinimum version needed: %@\n",
of_zip_archive_entry_version_to_string(
versionMadeBy),
of_zip_archive_entry_version_to_string(
[entry minVersionNeeded])];
if ((versionMadeBy >> 8) ==
OF_ZIP_ARCHIVE_ENTRY_ATTR_COMPAT_UNIX) {
uint32_t mode = [entry
versionSpecificAttributes] >> 16;
[of_stdout writeFormat:
@"\tMode: %06o\n", mode];
}
}
if (app->_outputLevel >= 3)
[of_stdout writeFormat:
@"\tGeneral purpose bit flag: "
@"%04" PRIx16 "\n"
@"\tExtra field: %@\n",
[entry generalPurposeBitFlag],
[entry extraField]];
if ([[entry fileComment] length] > 0)
[of_stdout writeFormat: @"\tComment: %@\n",
[entry fileComment]];
}
objc_autoreleasePoolPop(pool);
}
}
- (void)extractFiles: (OFArray OF_GENERIC(OFString*)*)files
{
OFFileManager *fileManager = [OFFileManager defaultManager];
bool all = ([files count] == 0);
OFMutableSet OF_GENERIC(OFString*) *missing =
[OFMutableSet setWithArray: files];
for (OFZIPArchiveEntry *entry in [_archive entries]) {
void *pool = objc_autoreleasePoolPush();
OFString *fileName = [entry fileName];
OFString *outFileName = [fileName stringByStandardizingPath];
OFArray OF_GENERIC(OFString*) *pathComponents;
OFString *directory;
OFStream *stream;
OFFile *output;
uint64_t written = 0, size = [entry uncompressedSize];
int8_t percent = -1, newPercent;
if (!all && ![files containsObject: fileName])
continue;
[missing removeObject: fileName];
#if !defined(OF_WINDOWS) && !defined(OF_MSDOS)
if ([outFileName hasPrefix: @"/"]) {
#else
if ([outFileName hasPrefix: @"/"] ||
[outFileName containsString: @":"]) {
#endif
[of_stderr writeFormat: @"Refusing to extract %@!\n",
fileName];
app->_exitStatus = 1;
goto outer_loop_end;
}
pathComponents = [outFileName pathComponents];
for (OFString *component in pathComponents) {
if ([component isEqual: OF_PATH_PARENT_DIRECTORY]) {
[of_stderr writeFormat:
@"Refusing to extract %@!\n", fileName];
app->_exitStatus = 1;
goto outer_loop_end;
}
}
outFileName = [OFString pathWithComponents: pathComponents];
if (app->_outputLevel >= 0)
[of_stdout writeFormat: @"Extracting %@...", fileName];
if ([fileName hasSuffix: @"/"]) {
[fileManager createDirectoryAtPath: outFileName
createParents: true];
setPermissions(outFileName, entry);
if (app->_outputLevel >= 0)
[of_stdout writeLine: @" done"];
goto outer_loop_end;
}
directory = [outFileName stringByDeletingLastPathComponent];
if (![fileManager directoryExistsAtPath: directory])
[fileManager createDirectoryAtPath: directory
createParents: true];
if (![app shouldExtractFile: fileName
outFileName: outFileName])
goto outer_loop_end;
stream = [_archive streamForReadingFile: fileName];
output = [OFFile fileWithPath: outFileName
mode: @"wb"];
setPermissions(outFileName, entry);
while (![stream isAtEndOfStream]) {
ssize_t length = [app copyBlockFromStream: stream
toStream: output
fileName: fileName];
if (length < 0) {
app->_exitStatus = 1;
goto outer_loop_end;
}
written += length;
newPercent = (written == size
? 100 : (int8_t)(written * 100 / size));
if (app->_outputLevel >= 0 && percent != newPercent) {
percent = newPercent;
[of_stdout writeFormat:
@"\rExtracting %@... %3u%%",
fileName, percent];
}
}
if (app->_outputLevel >= 0)
[of_stdout writeFormat: @"\rExtracting %@... done\n",
fileName];
outer_loop_end:
objc_autoreleasePoolPop(pool);
}
if ([missing count] > 0) {
for (OFString *file in missing)
[of_stderr writeFormat:
@"File %@ is not in the archive!\n", file];
app->_exitStatus = 1;
}
}
- (void)printFiles: (OFArray OF_GENERIC(OFString*)*)files
{
OFStream *stream;
if ([files count] < 1) {
[of_stderr writeLine: @"Need one or more files to print!"];
app->_exitStatus = 1;
return;
}
for (OFString *path in files) {
@try {
stream = [_archive streamForReadingFile: path];
} @catch (OFOpenItemFailedException *e) {
if ([e errNo] == ENOENT) {
[of_stderr writeFormat:
@"File %@ is not in the archive!\n",
[e path]];
app->_exitStatus = 1;
continue;
}
@throw e;
}
while (![stream isAtEndOfStream]) {
ssize_t length = [app copyBlockFromStream: stream
toStream: of_stdout
fileName: path];
if (length < 0) {
app->_exitStatus = 1;
return;
}
}
[stream close];
}
}
@end