diff options
Diffstat (limited to 'engines/zvision/archives/zfs_archive.cpp')
| -rw-r--r-- | engines/zvision/archives/zfs_archive.cpp | 155 |
1 files changed, 0 insertions, 155 deletions
diff --git a/engines/zvision/archives/zfs_archive.cpp b/engines/zvision/archives/zfs_archive.cpp deleted file mode 100644 index 416719b8f2..0000000000 --- a/engines/zvision/archives/zfs_archive.cpp +++ /dev/null @@ -1,155 +0,0 @@ -/* ScummVM - Graphic Adventure Engine - * - * ScummVM is the legal property of its developers, whose names - * are too numerous to list here. Please refer to the COPYRIGHT - * file distributed with this source distribution. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version 2 - * of the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. - * - */ - -#include "common/scummsys.h" - -#include "zvision/archives/zfs_archive.h" - -#include "common/memstream.h" -#include "common/debug.h" -#include "common/file.h" - -namespace ZVision { - -ZfsArchive::ZfsArchive(const Common::String &fileName) : _fileName(fileName) { - Common::File zfsFile; - - if (!zfsFile.open(_fileName)) { - warning("ZFSArchive::ZFSArchive(): Could not find the archive file"); - return; - } - - readHeaders(&zfsFile); - - debug(1, "ZfsArchive::ZfsArchive(%s): Located %d files", _fileName.c_str(), _entryHeaders.size()); -} - -ZfsArchive::ZfsArchive(const Common::String &fileName, Common::SeekableReadStream *stream) : _fileName(fileName) { - readHeaders(stream); - - debug(1, "ZfsArchive::ZfsArchive(%s): Located %d files", _fileName.c_str(), _entryHeaders.size()); -} - -ZfsArchive::~ZfsArchive() { - debug(1, "ZfsArchive Destructor Called"); - ZfsEntryHeaderMap::iterator it = _entryHeaders.begin(); - for (; it != _entryHeaders.end(); ++it) { - delete it->_value; - } -} - -void ZfsArchive::readHeaders(Common::SeekableReadStream *stream) { - // Don't do a straight struct cast since we can't guarantee endianness - _header.magic = stream->readUint32LE(); - _header.unknown1 = stream->readUint32LE(); - _header.maxNameLength = stream->readUint32LE(); - _header.filesPerBlock = stream->readUint32LE(); - _header.fileCount = stream->readUint32LE(); - _header.xorKey[0] = stream->readByte(); - _header.xorKey[1] = stream->readByte(); - _header.xorKey[2] = stream->readByte(); - _header.xorKey[3] = stream->readByte(); - _header.fileSectionOffset = stream->readUint32LE(); - - uint32 nextOffset; - - do { - // Read the offset to the next block - nextOffset = stream->readUint32LE(); - - // Read in each entry header - for (uint32 i = 0; i < _header.filesPerBlock; ++i) { - ZfsEntryHeader entryHeader; - - entryHeader.name = readEntryName(stream); - entryHeader.offset = stream->readUint32LE(); - entryHeader.id = stream->readUint32LE(); - entryHeader.size = stream->readUint32LE(); - entryHeader.time = stream->readUint32LE(); - entryHeader.unknown = stream->readUint32LE(); - - if (entryHeader.size != 0) - _entryHeaders[entryHeader.name] = new ZfsEntryHeader(entryHeader); - } - - // Seek to the next block of headers - stream->seek(nextOffset); - } while (nextOffset != 0); -} - -Common::String ZfsArchive::readEntryName(Common::SeekableReadStream *stream) const { - // Entry Names are at most 16 bytes and are null padded - char buffer[16]; - stream->read(buffer, 16); - - return Common::String(buffer); -} - -bool ZfsArchive::hasFile(const Common::String &name) const { - return _entryHeaders.contains(name); -} - -int ZfsArchive::listMembers(Common::ArchiveMemberList &list) const { - int matches = 0; - - for (ZfsEntryHeaderMap::const_iterator it = _entryHeaders.begin(); it != _entryHeaders.end(); ++it) { - list.push_back(Common::ArchiveMemberList::value_type(new Common::GenericArchiveMember(it->_value->name, this))); - matches++; - } - - return matches; -} - -const Common::ArchiveMemberPtr ZfsArchive::getMember(const Common::String &name) const { - if (!_entryHeaders.contains(name)) - return Common::ArchiveMemberPtr(); - - return Common::ArchiveMemberPtr(new Common::GenericArchiveMember(name, this)); -} - -Common::SeekableReadStream *ZfsArchive::createReadStreamForMember(const Common::String &name) const { - if (!_entryHeaders.contains(name)) { - return 0; - } - - ZfsEntryHeader *entryHeader = _entryHeaders[name]; - - Common::File zfsArchive; - zfsArchive.open(_fileName); - zfsArchive.seek(entryHeader->offset); - - // This *HAS* to be malloc (not new[]) because MemoryReadStream uses free() to free the memory - byte *buffer = (byte *)malloc(entryHeader->size); - zfsArchive.read(buffer, entryHeader->size); - // Decrypt the data in place - if (_header.xorKey != 0) - unXor(buffer, entryHeader->size, _header.xorKey); - - return new Common::MemoryReadStream(buffer, entryHeader->size, DisposeAfterUse::YES); -} - -void ZfsArchive::unXor(byte *buffer, uint32 length, const byte *xorKey) const { - for (uint32 i = 0; i < length; ++i) - buffer[i] ^= xorKey[i % 4]; -} - -} // End of namespace ZVision |