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Diffstat (limited to 'src/gui/text/qzip.cpp')
| -rw-r--r-- | src/gui/text/qzip.cpp | 1366 |
1 files changed, 0 insertions, 1366 deletions
diff --git a/src/gui/text/qzip.cpp b/src/gui/text/qzip.cpp deleted file mode 100644 index 711482af8a..0000000000 --- a/src/gui/text/qzip.cpp +++ /dev/null @@ -1,1366 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2016 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the QtGui module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** Commercial License Usage -** Licensees holding valid commercial Qt licenses may use this file in -** accordance with the commercial license agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and The Qt Company. For licensing terms -** and conditions see https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** GNU Lesser General Public License Usage -** Alternatively, this file may be used under the terms of the GNU Lesser -** General Public License version 3 as published by the Free Software -** Foundation and appearing in the file LICENSE.LGPL3 included in the -** packaging of this file. Please review the following information to -** ensure the GNU Lesser General Public License version 3 requirements -** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU -** General Public License version 2.0 or (at your option) the GNU General -** Public license version 3 or any later version approved by the KDE Free -** Qt Foundation. The licenses are as published by the Free Software -** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 -** included in the packaging of this file. Please review the following -** information to ensure the GNU General Public License requirements will -** be met: https://www.gnu.org/licenses/gpl-2.0.html and -** https://www.gnu.org/licenses/gpl-3.0.html. -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include <qglobal.h> - -#ifndef QT_NO_TEXTODFWRITER - -#include "qzipreader_p.h" -#include "qzipwriter_p.h" -#include <qdatetime.h> -#include <qendian.h> -#include <qdebug.h> -#include <qdir.h> - -#include <zlib.h> - -// Zip standard version for archives handled by this API -// (actually, the only basic support of this version is implemented but it is enough for now) -#define ZIP_VERSION 20 - -#if 0 -#define ZDEBUG qDebug -#else -#define ZDEBUG if (0) qDebug -#endif - -QT_BEGIN_NAMESPACE - -static inline uint readUInt(const uchar *data) -{ - return (data[0]) + (data[1]<<8) + (data[2]<<16) + (data[3]<<24); -} - -static inline ushort readUShort(const uchar *data) -{ - return (data[0]) + (data[1]<<8); -} - -static inline void writeUInt(uchar *data, uint i) -{ - data[0] = i & 0xff; - data[1] = (i>>8) & 0xff; - data[2] = (i>>16) & 0xff; - data[3] = (i>>24) & 0xff; -} - -static inline void writeUShort(uchar *data, ushort i) -{ - data[0] = i & 0xff; - data[1] = (i>>8) & 0xff; -} - -static inline void copyUInt(uchar *dest, const uchar *src) -{ - dest[0] = src[0]; - dest[1] = src[1]; - dest[2] = src[2]; - dest[3] = src[3]; -} - -static inline void copyUShort(uchar *dest, const uchar *src) -{ - dest[0] = src[0]; - dest[1] = src[1]; -} - -static void writeMSDosDate(uchar *dest, const QDateTime& dt) -{ - if (dt.isValid()) { - quint16 time = - (dt.time().hour() << 11) // 5 bit hour - | (dt.time().minute() << 5) // 6 bit minute - | (dt.time().second() >> 1); // 5 bit double seconds - - dest[0] = time & 0xff; - dest[1] = time >> 8; - - quint16 date = - ((dt.date().year() - 1980) << 9) // 7 bit year 1980-based - | (dt.date().month() << 5) // 4 bit month - | (dt.date().day()); // 5 bit day - - dest[2] = char(date); - dest[3] = char(date >> 8); - } else { - dest[0] = 0; - dest[1] = 0; - dest[2] = 0; - dest[3] = 0; - } -} - -static int inflate(Bytef *dest, ulong *destLen, const Bytef *source, ulong sourceLen) -{ - z_stream stream; - int err; - - stream.next_in = const_cast<Bytef*>(source); - stream.avail_in = (uInt)sourceLen; - if ((uLong)stream.avail_in != sourceLen) - return Z_BUF_ERROR; - - stream.next_out = dest; - stream.avail_out = (uInt)*destLen; - if ((uLong)stream.avail_out != *destLen) - return Z_BUF_ERROR; - - stream.zalloc = (alloc_func)nullptr; - stream.zfree = (free_func)nullptr; - - err = inflateInit2(&stream, -MAX_WBITS); - if (err != Z_OK) - return err; - - err = inflate(&stream, Z_FINISH); - if (err != Z_STREAM_END) { - inflateEnd(&stream); - if (err == Z_NEED_DICT || (err == Z_BUF_ERROR && stream.avail_in == 0)) - return Z_DATA_ERROR; - return err; - } - *destLen = stream.total_out; - - err = inflateEnd(&stream); - return err; -} - -static int deflate (Bytef *dest, ulong *destLen, const Bytef *source, ulong sourceLen) -{ - z_stream stream; - int err; - - stream.next_in = const_cast<Bytef*>(source); - stream.avail_in = (uInt)sourceLen; - stream.next_out = dest; - stream.avail_out = (uInt)*destLen; - if ((uLong)stream.avail_out != *destLen) return Z_BUF_ERROR; - - stream.zalloc = (alloc_func)nullptr; - stream.zfree = (free_func)nullptr; - stream.opaque = (voidpf)nullptr; - - err = deflateInit2(&stream, Z_DEFAULT_COMPRESSION, Z_DEFLATED, -MAX_WBITS, 8, Z_DEFAULT_STRATEGY); - if (err != Z_OK) return err; - - err = deflate(&stream, Z_FINISH); - if (err != Z_STREAM_END) { - deflateEnd(&stream); - return err == Z_OK ? Z_BUF_ERROR : err; - } - *destLen = stream.total_out; - - err = deflateEnd(&stream); - return err; -} - - -namespace WindowsFileAttributes { -enum { - Dir = 0x10, // FILE_ATTRIBUTE_DIRECTORY - File = 0x80, // FILE_ATTRIBUTE_NORMAL - TypeMask = 0x90, - - ReadOnly = 0x01, // FILE_ATTRIBUTE_READONLY - PermMask = 0x01 -}; -} - -namespace UnixFileAttributes { -enum { - Dir = 0040000, // __S_IFDIR - File = 0100000, // __S_IFREG - SymLink = 0120000, // __S_IFLNK - TypeMask = 0170000, // __S_IFMT - - ReadUser = 0400, // __S_IRUSR - WriteUser = 0200, // __S_IWUSR - ExeUser = 0100, // __S_IXUSR - ReadGroup = 0040, // __S_IRGRP - WriteGroup = 0020, // __S_IWGRP - ExeGroup = 0010, // __S_IXGRP - ReadOther = 0004, // __S_IROTH - WriteOther = 0002, // __S_IWOTH - ExeOther = 0001, // __S_IXOTH - PermMask = 0777 -}; -} - -static QFile::Permissions modeToPermissions(quint32 mode) -{ - QFile::Permissions ret; - if (mode & UnixFileAttributes::ReadUser) - ret |= QFile::ReadOwner | QFile::ReadUser; - if (mode & UnixFileAttributes::WriteUser) - ret |= QFile::WriteOwner | QFile::WriteUser; - if (mode & UnixFileAttributes::ExeUser) - ret |= QFile::ExeOwner | QFile::ExeUser; - if (mode & UnixFileAttributes::ReadGroup) - ret |= QFile::ReadGroup; - if (mode & UnixFileAttributes::WriteGroup) - ret |= QFile::WriteGroup; - if (mode & UnixFileAttributes::ExeGroup) - ret |= QFile::ExeGroup; - if (mode & UnixFileAttributes::ReadOther) - ret |= QFile::ReadOther; - if (mode & UnixFileAttributes::WriteOther) - ret |= QFile::WriteOther; - if (mode & UnixFileAttributes::ExeOther) - ret |= QFile::ExeOther; - return ret; -} - -static quint32 permissionsToMode(QFile::Permissions perms) -{ - quint32 mode = 0; - if (perms & (QFile::ReadOwner | QFile::ReadUser)) - mode |= UnixFileAttributes::ReadUser; - if (perms & (QFile::WriteOwner | QFile::WriteUser)) - mode |= UnixFileAttributes::WriteUser; - if (perms & (QFile::ExeOwner | QFile::ExeUser)) - mode |= UnixFileAttributes::WriteUser; - if (perms & QFile::ReadGroup) - mode |= UnixFileAttributes::ReadGroup; - if (perms & QFile::WriteGroup) - mode |= UnixFileAttributes::WriteGroup; - if (perms & QFile::ExeGroup) - mode |= UnixFileAttributes::ExeGroup; - if (perms & QFile::ReadOther) - mode |= UnixFileAttributes::ReadOther; - if (perms & QFile::WriteOther) - mode |= UnixFileAttributes::WriteOther; - if (perms & QFile::ExeOther) - mode |= UnixFileAttributes::ExeOther; - return mode; -} - -static QDateTime readMSDosDate(const uchar *src) -{ - uint dosDate = readUInt(src); - quint64 uDate; - uDate = (quint64)(dosDate >> 16); - uint tm_mday = (uDate & 0x1f); - uint tm_mon = ((uDate & 0x1E0) >> 5); - uint tm_year = (((uDate & 0x0FE00) >> 9) + 1980); - uint tm_hour = ((dosDate & 0xF800) >> 11); - uint tm_min = ((dosDate & 0x7E0) >> 5); - uint tm_sec = ((dosDate & 0x1f) << 1); - - return QDateTime(QDate(tm_year, tm_mon, tm_mday), QTime(tm_hour, tm_min, tm_sec)); -} - -// for details, see http://www.pkware.com/documents/casestudies/APPNOTE.TXT - -enum HostOS { - HostFAT = 0, - HostAMIGA = 1, - HostVMS = 2, // VAX/VMS - HostUnix = 3, - HostVM_CMS = 4, - HostAtari = 5, // what if it's a minix filesystem? [cjh] - HostHPFS = 6, // filesystem used by OS/2 (and NT 3.x) - HostMac = 7, - HostZ_System = 8, - HostCPM = 9, - HostTOPS20 = 10, // pkzip 2.50 NTFS - HostNTFS = 11, // filesystem used by Windows NT - HostQDOS = 12, // SMS/QDOS - HostAcorn = 13, // Archimedes Acorn RISC OS - HostVFAT = 14, // filesystem used by Windows 95, NT - HostMVS = 15, - HostBeOS = 16, // hybrid POSIX/database filesystem - HostTandem = 17, - HostOS400 = 18, - HostOSX = 19 -}; -Q_DECLARE_TYPEINFO(HostOS, Q_PRIMITIVE_TYPE); - -enum GeneralPurposeFlag { - Encrypted = 0x01, - AlgTune1 = 0x02, - AlgTune2 = 0x04, - HasDataDescriptor = 0x08, - PatchedData = 0x20, - StrongEncrypted = 0x40, - Utf8Names = 0x0800, - CentralDirectoryEncrypted = 0x2000 -}; -Q_DECLARE_TYPEINFO(GeneralPurposeFlag, Q_PRIMITIVE_TYPE); - -enum CompressionMethod { - CompressionMethodStored = 0, - CompressionMethodShrunk = 1, - CompressionMethodReduced1 = 2, - CompressionMethodReduced2 = 3, - CompressionMethodReduced3 = 4, - CompressionMethodReduced4 = 5, - CompressionMethodImploded = 6, - CompressionMethodReservedTokenizing = 7, // reserved for tokenizing - CompressionMethodDeflated = 8, - CompressionMethodDeflated64 = 9, - CompressionMethodPKImploding = 10, - - CompressionMethodBZip2 = 12, - - CompressionMethodLZMA = 14, - - CompressionMethodTerse = 18, - CompressionMethodLz77 = 19, - - CompressionMethodJpeg = 96, - CompressionMethodWavPack = 97, - CompressionMethodPPMd = 98, - CompressionMethodWzAES = 99 -}; -Q_DECLARE_TYPEINFO(CompressionMethod, Q_PRIMITIVE_TYPE); - -struct LocalFileHeader -{ - uchar signature[4]; // 0x04034b50 - uchar version_needed[2]; - uchar general_purpose_bits[2]; - uchar compression_method[2]; - uchar last_mod_file[4]; - uchar crc_32[4]; - uchar compressed_size[4]; - uchar uncompressed_size[4]; - uchar file_name_length[2]; - uchar extra_field_length[2]; -}; -Q_DECLARE_TYPEINFO(LocalFileHeader, Q_PRIMITIVE_TYPE); - -struct DataDescriptor -{ - uchar crc_32[4]; - uchar compressed_size[4]; - uchar uncompressed_size[4]; -}; -Q_DECLARE_TYPEINFO(DataDescriptor, Q_PRIMITIVE_TYPE); - -struct CentralFileHeader -{ - uchar signature[4]; // 0x02014b50 - uchar version_made[2]; - uchar version_needed[2]; - uchar general_purpose_bits[2]; - uchar compression_method[2]; - uchar last_mod_file[4]; - uchar crc_32[4]; - uchar compressed_size[4]; - uchar uncompressed_size[4]; - uchar file_name_length[2]; - uchar extra_field_length[2]; - uchar file_comment_length[2]; - uchar disk_start[2]; - uchar internal_file_attributes[2]; - uchar external_file_attributes[4]; - uchar offset_local_header[4]; -}; -Q_DECLARE_TYPEINFO(CentralFileHeader, Q_PRIMITIVE_TYPE); - -struct EndOfDirectory -{ - uchar signature[4]; // 0x06054b50 - uchar this_disk[2]; - uchar start_of_directory_disk[2]; - uchar num_dir_entries_this_disk[2]; - uchar num_dir_entries[2]; - uchar directory_size[4]; - uchar dir_start_offset[4]; - uchar comment_length[2]; -}; -Q_DECLARE_TYPEINFO(EndOfDirectory, Q_PRIMITIVE_TYPE); - -struct FileHeader -{ - CentralFileHeader h; - QByteArray file_name; - QByteArray extra_field; - QByteArray file_comment; -}; -Q_DECLARE_TYPEINFO(FileHeader, Q_RELOCATABLE_TYPE); - -class QZipPrivate -{ -public: - QZipPrivate(QIODevice *device, bool ownDev) - : device(device), ownDevice(ownDev), dirtyFileTree(true), start_of_directory(0) - { - } - - ~QZipPrivate() - { - if (ownDevice) - delete device; - } - - QZipReader::FileInfo fillFileInfo(int index) const; - - QIODevice *device; - bool ownDevice; - bool dirtyFileTree; - QList<FileHeader> fileHeaders; - QByteArray comment; - uint start_of_directory; -}; - -QZipReader::FileInfo QZipPrivate::fillFileInfo(int index) const -{ - QZipReader::FileInfo fileInfo; - FileHeader header = fileHeaders.at(index); - quint32 mode = readUInt(header.h.external_file_attributes); - const HostOS hostOS = HostOS(readUShort(header.h.version_made) >> 8); - switch (hostOS) { - case HostUnix: - mode = (mode >> 16) & 0xffff; - switch (mode & UnixFileAttributes::TypeMask) { - case UnixFileAttributes::SymLink: - fileInfo.isSymLink = true; - break; - case UnixFileAttributes::Dir: - fileInfo.isDir = true; - break; - case UnixFileAttributes::File: - default: // ### just for the case; should we warn? - fileInfo.isFile = true; - break; - } - fileInfo.permissions = modeToPermissions(mode); - break; - case HostFAT: - case HostNTFS: - case HostHPFS: - case HostVFAT: - switch (mode & WindowsFileAttributes::TypeMask) { - case WindowsFileAttributes::Dir: - fileInfo.isDir = true; - break; - case WindowsFileAttributes::File: - default: - fileInfo.isFile = true; - break; - } - fileInfo.permissions |= QFile::ReadOwner | QFile::ReadUser | QFile::ReadGroup | QFile::ReadOther; - if ((mode & WindowsFileAttributes::ReadOnly) == 0) - fileInfo.permissions |= QFile::WriteOwner | QFile::WriteUser | QFile::WriteGroup | QFile::WriteOther; - if (fileInfo.isDir) - fileInfo.permissions |= QFile::ExeOwner | QFile::ExeUser | QFile::ExeGroup | QFile::ExeOther; - break; - default: - qWarning("QZip: Zip entry format at %d is not supported.", index); - return fileInfo; // we don't support anything else - } - - ushort general_purpose_bits = readUShort(header.h.general_purpose_bits); - // if bit 11 is set, the filename and comment fields must be encoded using UTF-8 - const bool inUtf8 = (general_purpose_bits & Utf8Names) != 0; - fileInfo.filePath = inUtf8 ? QString::fromUtf8(header.file_name) : QString::fromLocal8Bit(header.file_name); - fileInfo.crc = readUInt(header.h.crc_32); - fileInfo.size = readUInt(header.h.uncompressed_size); - fileInfo.lastModified = readMSDosDate(header.h.last_mod_file); - - // fix the file path, if broken (convert separators, eat leading and trailing ones) - fileInfo.filePath = QDir::fromNativeSeparators(fileInfo.filePath); - QStringView filePathRef(fileInfo.filePath); - while (filePathRef.startsWith(QLatin1Char('.')) || filePathRef.startsWith(QLatin1Char('/'))) - filePathRef = filePathRef.mid(1); - while (filePathRef.endsWith(QLatin1Char('/'))) - filePathRef.chop(1); - - fileInfo.filePath = filePathRef.toString(); - return fileInfo; -} - -class QZipReaderPrivate : public QZipPrivate -{ -public: - QZipReaderPrivate(QIODevice *device, bool ownDev) - : QZipPrivate(device, ownDev), status(QZipReader::NoError) - { - } - - void scanFiles(); - - QZipReader::Status status; -}; - -class QZipWriterPrivate : public QZipPrivate -{ -public: - QZipWriterPrivate(QIODevice *device, bool ownDev) - : QZipPrivate(device, ownDev), - status(QZipWriter::NoError), - permissions(QFile::ReadOwner | QFile::WriteOwner), - compressionPolicy(QZipWriter::AlwaysCompress) - { - } - - QZipWriter::Status status; - QFile::Permissions permissions; - QZipWriter::CompressionPolicy compressionPolicy; - - enum EntryType { Directory, File, Symlink }; - - void addEntry(EntryType type, const QString &fileName, const QByteArray &contents); -}; - -static LocalFileHeader toLocalHeader(const CentralFileHeader &ch) -{ - LocalFileHeader h; - writeUInt(h.signature, 0x04034b50); - copyUShort(h.version_needed, ch.version_needed); - copyUShort(h.general_purpose_bits, ch.general_purpose_bits); - copyUShort(h.compression_method, ch.compression_method); - copyUInt(h.last_mod_file, ch.last_mod_file); - copyUInt(h.crc_32, ch.crc_32); - copyUInt(h.compressed_size, ch.compressed_size); - copyUInt(h.uncompressed_size, ch.uncompressed_size); - copyUShort(h.file_name_length, ch.file_name_length); - copyUShort(h.extra_field_length, ch.extra_field_length); - return h; -} - -void QZipReaderPrivate::scanFiles() -{ - if (!dirtyFileTree) - return; - - if (! (device->isOpen() || device->open(QIODevice::ReadOnly))) { - status = QZipReader::FileOpenError; - return; - } - - if ((device->openMode() & QIODevice::ReadOnly) == 0) { // only read the index from readable files. - status = QZipReader::FileReadError; - return; - } - - dirtyFileTree = false; - uchar tmp[4]; - device->read((char *)tmp, 4); - if (readUInt(tmp) != 0x04034b50) { - qWarning("QZip: not a zip file!"); - return; - } - - // find EndOfDirectory header - int i = 0; - int start_of_directory = -1; - int num_dir_entries = 0; - EndOfDirectory eod; - while (start_of_directory == -1) { - const int pos = device->size() - int(sizeof(EndOfDirectory)) - i; - if (pos < 0 || i > 65535) { - qWarning("QZip: EndOfDirectory not found"); - return; - } - - device->seek(pos); - device->read((char *)&eod, sizeof(EndOfDirectory)); - if (readUInt(eod.signature) == 0x06054b50) - break; - ++i; - } - - // have the eod - start_of_directory = readUInt(eod.dir_start_offset); - num_dir_entries = readUShort(eod.num_dir_entries); - ZDEBUG("start_of_directory at %d, num_dir_entries=%d", start_of_directory, num_dir_entries); - int comment_length = readUShort(eod.comment_length); - if (comment_length != i) - qWarning("QZip: failed to parse zip file."); - comment = device->read(qMin(comment_length, i)); - - - device->seek(start_of_directory); - for (i = 0; i < num_dir_entries; ++i) { - FileHeader header; - int read = device->read((char *) &header.h, sizeof(CentralFileHeader)); - if (read < (int)sizeof(CentralFileHeader)) { - qWarning("QZip: Failed to read complete header, index may be incomplete"); - break; - } - if (readUInt(header.h.signature) != 0x02014b50) { - qWarning("QZip: invalid header signature, index may be incomplete"); - break; - } - - int l = readUShort(header.h.file_name_length); - header.file_name = device->read(l); - if (header.file_name.length() != l) { - qWarning("QZip: Failed to read filename from zip index, index may be incomplete"); - break; - } - l = readUShort(header.h.extra_field_length); - header.extra_field = device->read(l); - if (header.extra_field.length() != l) { - qWarning("QZip: Failed to read extra field in zip file, skipping file, index may be incomplete"); - break; - } - l = readUShort(header.h.file_comment_length); - header.file_comment = device->read(l); - if (header.file_comment.length() != l) { - qWarning("QZip: Failed to read read file comment, index may be incomplete"); - break; - } - - ZDEBUG("found file '%s'", header.file_name.data()); - fileHeaders.append(header); - } -} - -void QZipWriterPrivate::addEntry(EntryType type, const QString &fileName, const QByteArray &contents/*, QFile::Permissions permissions, QZip::Method m*/) -{ -#ifndef NDEBUG - static const char *const entryTypes[] = { - "directory", - "file ", - "symlink " }; - ZDEBUG() << "adding" << entryTypes[type] <<":" << fileName.toUtf8().data() << (type == 2 ? QByteArray(" -> " + contents).constData() : ""); -#endif - - if (! (device->isOpen() || device->open(QIODevice::WriteOnly))) { - status = QZipWriter::FileOpenError; - return; - } - device->seek(start_of_directory); - - // don't compress small files - QZipWriter::CompressionPolicy compression = compressionPolicy; - if (compressionPolicy == QZipWriter::AutoCompress) { - if (contents.length() < 64) - compression = QZipWriter::NeverCompress; - else - compression = QZipWriter::AlwaysCompress; - } - - FileHeader header; - memset(&header.h, 0, sizeof(CentralFileHeader)); - writeUInt(header.h.signature, 0x02014b50); - - writeUShort(header.h.version_needed, ZIP_VERSION); - writeUInt(header.h.uncompressed_size, contents.length()); - writeMSDosDate(header.h.last_mod_file, QDateTime::currentDateTime()); - QByteArray data = contents; - if (compression == QZipWriter::AlwaysCompress) { - writeUShort(header.h.compression_method, CompressionMethodDeflated); - - ulong len = contents.length(); - // shamelessly copied form zlib - len += (len >> 12) + (len >> 14) + 11; - int res; - do { - data.resize(len); - res = deflate((uchar*)data.data(), &len, (const uchar*)contents.constData(), contents.length()); - - switch (res) { - case Z_OK: - data.resize(len); - break; - case Z_MEM_ERROR: - qWarning("QZip: Z_MEM_ERROR: Not enough memory to compress file, skipping"); - data.resize(0); - break; - case Z_BUF_ERROR: - len *= 2; - break; - } - } while (res == Z_BUF_ERROR); - } -// TODO add a check if data.length() > contents.length(). Then try to store the original and revert the compression method to be uncompressed - writeUInt(header.h.compressed_size, data.length()); - uint crc_32 = ::crc32(0, nullptr, 0); - crc_32 = ::crc32(crc_32, (const uchar *)contents.constData(), contents.length()); - writeUInt(header.h.crc_32, crc_32); - - // if bit 11 is set, the filename and comment fields must be encoded using UTF-8 - ushort general_purpose_bits = Utf8Names; // always use utf-8 - writeUShort(header.h.general_purpose_bits, general_purpose_bits); - - const bool inUtf8 = (general_purpose_bits & Utf8Names) != 0; - header.file_name = inUtf8 ? fileName.toUtf8() : fileName.toLocal8Bit(); - if (header.file_name.size() > 0xffff) { - qWarning("QZip: Filename is too long, chopping it to 65535 bytes"); - header.file_name = header.file_name.left(0xffff); // ### don't break the utf-8 sequence, if any - } - if (header.file_comment.size() + header.file_name.size() > 0xffff) { - qWarning("QZip: File comment is too long, chopping it to 65535 bytes"); - header.file_comment.truncate(0xffff - header.file_name.size()); // ### don't break the utf-8 sequence, if any - } - writeUShort(header.h.file_name_length, header.file_name.length()); - //h.extra_field_length[2]; - - writeUShort(header.h.version_made, HostUnix << 8); - //uchar internal_file_attributes[2]; - //uchar external_file_attributes[4]; - quint32 mode = permissionsToMode(permissions); - switch (type) { - case Symlink: - mode |= UnixFileAttributes::SymLink; - break; - case Directory: - mode |= UnixFileAttributes::Dir; - break; - case File: - mode |= UnixFileAttributes::File; - break; - default: - Q_UNREACHABLE(); - break; - } - writeUInt(header.h.external_file_attributes, mode << 16); - writeUInt(header.h.offset_local_header, start_of_directory); - - - fileHeaders.append(header); - - LocalFileHeader h = toLocalHeader(header.h); - device->write((const char *)&h, sizeof(LocalFileHeader)); - device->write(header.file_name); - device->write(data); - start_of_directory = device->pos(); - dirtyFileTree = true; -} - -////////////////////////////// Reader - -/*! - \class QZipReader::FileInfo - \internal - Represents one entry in the zip table of contents. -*/ - -/*! - \variable FileInfo::filePath - The full filepath inside the archive. -*/ - -/*! - \variable FileInfo::isDir - A boolean type indicating if the entry is a directory. -*/ - -/*! - \variable FileInfo::isFile - A boolean type, if it is one this entry is a file. -*/ - -/*! - \variable FileInfo::isSymLink - A boolean type, if it is one this entry is symbolic link. -*/ - -/*! - \variable FileInfo::permissions - A list of flags for the permissions of this entry. -*/ - -/*! - \variable FileInfo::crc - The calculated checksum as a crc type. -*/ - -/*! - \variable FileInfo::size - The total size of the unpacked content. -*/ - -/*! - \class QZipReader - \internal - \since 4.5 - - \brief the QZipReader class provides a way to inspect the contents of a zip - archive and extract individual files from it. - - QZipReader can be used to read a zip archive either from a file or from any - device. An in-memory QBuffer for instance. The reader can be used to read - which files are in the archive using fileInfoList() and entryInfoAt() but - also to extract individual files using fileData() or even to extract all - files in the archive using extractAll() -*/ - -/*! - Create a new zip archive that operates on the \a fileName. The file will be - opened with the \a mode. -*/ -QZipReader::QZipReader(const QString &archive, QIODevice::OpenMode mode) -{ - QScopedPointer<QFile> f(new QFile(archive)); - const bool result = f->open(mode); - QZipReader::Status status; - const QFileDevice::FileError error = f->error(); - if (result && error == QFile::NoError) { - status = NoError; - } else { - if (error == QFile::ReadError) - status = FileReadError; - else if (error == QFile::OpenError) - status = FileOpenError; - else if (error == QFile::PermissionsError) - status = FilePermissionsError; - else - status = FileError; - } - - d = new QZipReaderPrivate(f.data(), /*ownDevice=*/true); - f.take(); - d->status = status; -} - -/*! - Create a new zip archive that operates on the archive found in \a device. - You have to open the device previous to calling the constructor and only a - device that is readable will be scanned for zip filecontent. - */ -QZipReader::QZipReader(QIODevice *device) - : d(new QZipReaderPrivate(device, /*ownDevice=*/false)) -{ - Q_ASSERT(device); -} - -/*! - Destructor -*/ -QZipReader::~QZipReader() -{ - close(); - delete d; -} - -/*! - Returns device used for reading zip archive. -*/ -QIODevice* QZipReader::device() const -{ - return d->device; -} - -/*! - Returns \c true if the user can read the file; otherwise returns \c false. -*/ -bool QZipReader::isReadable() const -{ - return d->device->isReadable(); -} - -/*! - Returns \c true if the file exists; otherwise returns \c false. -*/ -bool QZipReader::exists() const -{ - QFile *f = qobject_cast<QFile*> (d->device); - if (f == nullptr) - return true; - return f->exists(); -} - -/*! - Returns the list of files the archive contains. -*/ -QList<QZipReader::FileInfo> QZipReader::fileInfoList() const -{ - d->scanFiles(); - QList<FileInfo> files; - const int numFileHeaders = d->fileHeaders.size(); - files.reserve(numFileHeaders); - for (int i = 0; i < numFileHeaders; ++i) - files.append(d->fillFileInfo(i)); - return files; - -} - -/*! - Return the number of items in the zip archive. -*/ -int QZipReader::count() const -{ - d->scanFiles(); - return d->fileHeaders.count(); -} - -/*! - Returns a FileInfo of an entry in the zipfile. - The \a index is the index into the directory listing of the zipfile. - Returns an invalid FileInfo if \a index is out of boundaries. - - \sa fileInfoList() -*/ -QZipReader::FileInfo QZipReader::entryInfoAt(int index) const -{ - d->scanFiles(); - if (index >= 0 && index < d->fileHeaders.count()) - return d->fillFileInfo(index); - return QZipReader::FileInfo(); -} - -/*! - Fetch the file contents from the zip archive and return the uncompressed bytes. -*/ -QByteArray QZipReader::fileData(const QString &fileName) const -{ - d->scanFiles(); - int i; - for (i = 0; i < d->fileHeaders.size(); ++i) { - if (QString::fromLocal8Bit(d->fileHeaders.at(i).file_name) == fileName) - break; - } - if (i == d->fileHeaders.size()) - return QByteArray(); - - FileHeader header = d->fileHeaders.at(i); - - ushort version_needed = readUShort(header.h.version_needed); - if (version_needed > ZIP_VERSION) { - qWarning("QZip: .ZIP specification version %d implementationis needed to extract the data.", version_needed); - return QByteArray(); - } - - ushort general_purpose_bits = readUShort(header.h.general_purpose_bits); - int compressed_size = readUInt(header.h.compressed_size); - int uncompressed_size = readUInt(header.h.uncompressed_size); - int start = readUInt(header.h.offset_local_header); - //qDebug("uncompressing file %d: local header at %d", i, start); - - d->device->seek(start); - LocalFileHeader lh; - d->device->read((char *)&lh, sizeof(LocalFileHeader)); - uint skip = readUShort(lh.file_name_length) + readUShort(lh.extra_field_length); - d->device->seek(d->device->pos() + skip); - - int compression_method = readUShort(lh.compression_method); - //qDebug("file=%s: compressed_size=%d, uncompressed_size=%d", fileName.toLocal8Bit().data(), compressed_size, uncompressed_size); - - if ((general_purpose_bits & Encrypted) != 0) { - qWarning("QZip: Unsupported encryption method is needed to extract the data."); - return QByteArray(); - } - - //qDebug("file at %lld", d->device->pos()); - QByteArray compressed = d->device->read(compressed_size); - if (compression_method == CompressionMethodStored) { - // no compression - compressed.truncate(uncompressed_size); - return compressed; - } else if (compression_method == CompressionMethodDeflated) { - // Deflate - //qDebug("compressed=%d", compressed.size()); - compressed.truncate(compressed_size); - QByteArray baunzip; - ulong len = qMax(uncompressed_size, 1); - int res; - do { - baunzip.resize(len); - res = inflate((uchar*)baunzip.data(), &len, - (const uchar*)compressed.constData(), compressed_size); - - switch (res) { - case Z_OK: - if ((int)len != baunzip.size()) - baunzip.resize(len); - break; - case Z_MEM_ERROR: - qWarning("QZip: Z_MEM_ERROR: Not enough memory"); - break; - case Z_BUF_ERROR: - len *= 2; - break; - case Z_DATA_ERROR: - qWarning("QZip: Z_DATA_ERROR: Input data is corrupted"); - break; - } - } while (res == Z_BUF_ERROR); - return baunzip; - } - - qWarning("QZip: Unsupported compression method %d is needed to extract the data.", compression_method); - return QByteArray(); -} - -/*! - Extracts the full contents of the zip file into \a destinationDir on - the local filesystem. - In case writing or linking a file fails, the extraction will be aborted. -*/ -bool QZipReader::extractAll(const QString &destinationDir) const -{ - QDir baseDir(destinationDir); - - // create directories first - const QList<FileInfo> allFiles = fileInfoList(); - for (const FileInfo &fi : allFiles) { - const QString absPath = destinationDir + QDir::separator() + fi.filePath; - if (fi.isDir) { - if (!baseDir.mkpath(fi.filePath)) - return false; - if (!QFile::setPermissions(absPath, fi.permissions)) - return false; - } - } - - // set up symlinks - for (const FileInfo &fi : allFiles) { - const QString absPath = destinationDir + QDir::separator() + fi.filePath; - if (fi.isSymLink) { - QString destination = QFile::decodeName(fileData(fi.filePath)); - if (destination.isEmpty()) - return false; - QFileInfo linkFi(absPath); - if (!QFile::exists(linkFi.absolutePath())) - QDir::root().mkpath(linkFi.absolutePath()); - if (!QFile::link(destination, absPath)) - return false; - /* cannot change permission of links - if (!QFile::setPermissions(absPath, fi.permissions)) - return false; - */ - } - } - - for (const FileInfo &fi : allFiles) { - const QString absPath = destinationDir + QDir::separator() + fi.filePath; - if (fi.isFile) { - QFile f(absPath); - if (!f.open(QIODevice::WriteOnly)) - return false; - f.write(fileData(fi.filePath)); - f.setPermissions(fi.permissions); - f.close(); - } - } - - return true; -} - -/*! - \enum QZipReader::Status - - The following status values are possible: - - \value NoError No error occurred. - \value FileReadError An error occurred when reading from the file. - \value FileOpenError The file could not be opened. - \value FilePermissionsError The file could not be accessed. - \value FileError Another file error occurred. -*/ - -/*! - Returns a status code indicating the first error that was met by QZipReader, - or QZipReader::NoError if no error occurred. -*/ -QZipReader::Status QZipReader::status() const -{ - return d->status; -} - -/*! - Close the zip file. -*/ -void QZipReader::close() -{ - d->device->close(); -} - -////////////////////////////// Writer - -/*! - \class QZipWriter - \internal - \since 4.5 - - \brief the QZipWriter class provides a way to create a new zip archive. - - QZipWriter can be used to create a zip archive containing any number of files - and directories. The files in the archive will be compressed in a way that is - compatible with common zip reader applications. -*/ - - -/*! - Create a new zip archive that operates on the \a archive filename. The file will - be opened with the \a mode. - \sa isValid() -*/ -QZipWriter::QZipWriter(const QString &fileName, QIODevice::OpenMode mode) -{ - QScopedPointer<QFile> f(new QFile(fileName)); - QZipWriter::Status status; - if (f->open(mode) && f->error() == QFile::NoError) - status = QZipWriter::NoError; - else { - if (f->error() == QFile::WriteError) - status = QZipWriter::FileWriteError; - else if (f->error() == QFile::OpenError) - status = QZipWriter::FileOpenError; - else if (f->error() == QFile::PermissionsError) - status = QZipWriter::FilePermissionsError; - else - status = QZipWriter::FileError; - } - - d = new QZipWriterPrivate(f.data(), /*ownDevice=*/true); - f.take(); - d->status = status; -} - -/*! - Create a new zip archive that operates on the archive found in \a device. - You have to open the device previous to calling the constructor and - only a device that is readable will be scanned for zip filecontent. - */ -QZipWriter::QZipWriter(QIODevice *device) - : d(new QZipWriterPrivate(device, /*ownDevice=*/false)) -{ - Q_ASSERT(device); -} - -QZipWriter::~QZipWriter() -{ - close(); - delete d; -} - -/*! - Returns device used for writing zip archive. -*/ -QIODevice* QZipWriter::device() const -{ - return d->device; -} - -/*! - Returns \c true if the user can write to the archive; otherwise returns \c false. -*/ -bool QZipWriter::isWritable() const -{ - return d->device->isWritable(); -} - -/*! - Returns \c true if the file exists; otherwise returns \c false. -*/ -bool QZipWriter::exists() const -{ - QFile *f = qobject_cast<QFile*> (d->device); - if (f == nullptr) - return true; - return f->exists(); -} - -/*! - \enum QZipWriter::Status - - The following status values are possible: - - \value NoError No error occurred. - \value FileWriteError An error occurred when writing to the device. - \value FileOpenError The file could not be opened. - \value FilePermissionsError The file could not be accessed. - \value FileError Another file error occurred. -*/ - -/*! - Returns a status code indicating the first error that was met by QZipWriter, - or QZipWriter::NoError if no error occurred. -*/ -QZipWriter::Status QZipWriter::status() const -{ - return d->status; -} - -/*! - \enum QZipWriter::CompressionPolicy - - \value AlwaysCompress A file that is added is compressed. - \value NeverCompress A file that is added will be stored without changes. - \value AutoCompress A file that is added will be compressed only if that will give a smaller file. -*/ - -/*! - Sets the policy for compressing newly added files to the new \a policy. - - \note the default policy is AlwaysCompress - - \sa compressionPolicy() - \sa addFile() -*/ -void QZipWriter::setCompressionPolicy(CompressionPolicy policy) -{ - d->compressionPolicy = policy; -} - -/*! - Returns the currently set compression policy. - \sa setCompressionPolicy() - \sa addFile() -*/ -QZipWriter::CompressionPolicy QZipWriter::compressionPolicy() const -{ - return d->compressionPolicy; -} - -/*! - Sets the permissions that will be used for newly added files. - - \note the default permissions are QFile::ReadOwner | QFile::WriteOwner. - - \sa creationPermissions() - \sa addFile() -*/ -void QZipWriter::setCreationPermissions(QFile::Permissions permissions) -{ - d->permissions = permissions; -} - -/*! - Returns the currently set creation permissions. - - \sa setCreationPermissions() - \sa addFile() -*/ -QFile::Permissions QZipWriter::creationPermissions() const -{ - return d->permissions; -} - -/*! - Add a file to the archive with \a data as the file contents. - The file will be stored in the archive using the \a fileName which - includes the full path in the archive. - - The new file will get the file permissions based on the current - creationPermissions and it will be compressed using the zip compression - based on the current compression policy. - - \sa setCreationPermissions() - \sa setCompressionPolicy() -*/ -void QZipWriter::addFile(const QString &fileName, const QByteArray &data) -{ - d->addEntry(QZipWriterPrivate::File, QDir::fromNativeSeparators(fileName), data); -} - -/*! - Add a file to the archive with \a device as the source of the contents. - The contents returned from QIODevice::readAll() will be used as the - filedata. - The file will be stored in the archive using the \a fileName which - includes the full path in the archive. -*/ -void QZipWriter::addFile(const QString &fileName, QIODevice *device) -{ - Q_ASSERT(device); - QIODevice::OpenMode mode = device->openMode(); - bool opened = false; - if ((mode & QIODevice::ReadOnly) == 0) { - opened = true; - if (! device->open(QIODevice::ReadOnly)) { - d->status = FileOpenError; - return; - } - } - d->addEntry(QZipWriterPrivate::File, QDir::fromNativeSeparators(fileName), device->readAll()); - if (opened) - device->close(); -} - -/*! - Create a new directory in the archive with the specified \a dirName and - the \a permissions; -*/ -void QZipWriter::addDirectory(const QString &dirName) -{ - QString name(QDir::fromNativeSeparators(dirName)); - // separator is mandatory - if (!name.endsWith(QLatin1Char('/'))) - name.append(QLatin1Char('/')); - d->addEntry(QZipWriterPrivate::Directory, name, QByteArray()); -} - -/*! - Create a new symbolic link in the archive with the specified \a dirName - and the \a permissions; - A symbolic link contains the destination (relative) path and name. -*/ -void QZipWriter::addSymLink(const QString &fileName, const QString &destination) -{ - d->addEntry(QZipWriterPrivate::Symlink, QDir::fromNativeSeparators(fileName), QFile::encodeName(destination)); -} - -/*! - Closes the zip file. -*/ -void QZipWriter::close() -{ - if (!(d->device->openMode() & QIODevice::WriteOnly)) { - d->device->close(); - return; - } - - //qDebug("QZip::close writing directory, %d entries", d->fileHeaders.size()); - d->device->seek(d->start_of_directory); - // write new directory - for (int i = 0; i < d->fileHeaders.size(); ++i) { - const FileHeader &header = d->fileHeaders.at(i); - d->device->write((const char *)&header.h, sizeof(CentralFileHeader)); - d->device->write(header.file_name); - d->device->write(header.extra_field); - d->device->write(header.file_comment); - } - int dir_size = d->device->pos() - d->start_of_directory; - // write end of directory - EndOfDirectory eod; - memset(&eod, 0, sizeof(EndOfDirectory)); - writeUInt(eod.signature, 0x06054b50); - //uchar this_disk[2]; - //uchar start_of_directory_disk[2]; - writeUShort(eod.num_dir_entries_this_disk, d->fileHeaders.size()); - writeUShort(eod.num_dir_entries, d->fileHeaders.size()); - writeUInt(eod.directory_size, dir_size); - writeUInt(eod.dir_start_offset, d->start_of_directory); - writeUShort(eod.comment_length, d->comment.length()); - - d->device->write((const char *)&eod, sizeof(EndOfDirectory)); - d->device->write(d->comment); - d->device->close(); -} - -QT_END_NAMESPACE - -#endif // QT_NO_TEXTODFWRITER |