124 lines
4.2 KiB
C++
124 lines
4.2 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#include "base/plugins.h"
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#include "common/config-manager.h"
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#include "common/file.h"
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#include "common/md5.h"
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#include "ags/detection.h"
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#include "ags/detection_tables.h"
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namespace AGS3 {
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static const char *const HEAD_SIG = "CLIB\x1a";
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static const char *const TAIL_SIG = "CLIB\x1\x2\x3\x4SIGE";
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#define HEAD_SIG_SIZE 5
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#define TAIL_SIG_SIZE 12
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/**
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* Detect the presence of an AGS game
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* TODO: This is a compact version of MFLUtil::ReadSigsAndVersion. I didn't
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* use the full version due to the complexities of including it when
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* plugins are enabled. In the future, though, it would be nice to figure
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* out, since the full version can handle not detecting on files that are
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* AGS, but only contain sounds, etc. rather than a game
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*/
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static bool isAGSFile(Common::File &f) {
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// Check for signature at beginning of file
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char buffer[16];
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if (f.read(buffer, HEAD_SIG_SIZE) == HEAD_SIG_SIZE &&
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!memcmp(buffer, HEAD_SIG, HEAD_SIG_SIZE))
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return true;
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// Check for signature at end of EXE files
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f.seek(-TAIL_SIG_SIZE, SEEK_END);
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if (f.read(buffer, TAIL_SIG_SIZE) == TAIL_SIG_SIZE &&
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!memcmp(buffer, TAIL_SIG, TAIL_SIG_SIZE))
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return true;
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return false;
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}
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} // namespace AGS3
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AGSMetaEngineDetection::AGSMetaEngineDetection() : AdvancedMetaEngineDetection(AGS::GAME_DESCRIPTIONS,
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sizeof(AGS::AGSGameDescription), AGS::GAME_NAMES) {
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}
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ADDetectedGame AGSMetaEngineDetection::fallbackDetect(const FileMap &allFiles, const Common::FSList &fslist) const {
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// Set the default values for the fallback descriptor's ADGameDescription part.
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AGS::g_fallbackDesc.desc.language = Common::UNK_LANG;
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AGS::g_fallbackDesc.desc.platform = Common::kPlatformUnknown;
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AGS::g_fallbackDesc.desc.flags = ADGF_NO_FLAGS;
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// FIXME: Hack to return match without checking for game data,
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// so that the command line game scanner will work
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if (ConfMan.get("gameid") == "ags-scan") {
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_gameid = "ags-scan";
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AGS::g_fallbackDesc.desc.gameId = "ags-scan";
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return ADDetectedGame(&AGS::g_fallbackDesc.desc);
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}
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// Set the defaults for gameid and extra
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_gameid = "ags";
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_extra.clear();
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AGS::g_fallbackDesc.desc.gameId = _gameid.c_str();
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AGS::g_fallbackDesc.desc.extra = _extra.c_str();
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// Scan for AGS games
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for (Common::FSList::const_iterator file = fslist.begin(); file != fslist.end(); ++file) {
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if (file->isDirectory())
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continue;
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Common::String filename = file->getName();
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if (!filename.hasSuffixIgnoreCase(".exe") &&
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!filename.hasSuffixIgnoreCase(".ags") &&
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!filename.equalsIgnoreCase("ac2game.dat"))
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// Neither, so move on
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continue;
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Common::File f;
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if (!f.open(allFiles[filename]))
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continue;
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if (AGS3::isAGSFile(f)) {
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_filename = filename;
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f.seek(0);
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_md5 = Common::computeStreamMD5AsString(f, 5000);
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AGS::g_fallbackDesc.desc.filesDescriptions[0].fileName = _filename.c_str();
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AGS::g_fallbackDesc.desc.filesDescriptions[0].fileSize = f.size();
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AGS::g_fallbackDesc.desc.filesDescriptions[0].md5 = _md5.c_str();
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ADDetectedGame game(&AGS::g_fallbackDesc.desc);
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game.matchedFiles[_filename].md5 = _md5;
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game.matchedFiles[_filename].size = f.size();
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game.hasUnknownFiles = true;
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return game;
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}
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}
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return ADDetectedGame();
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}
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REGISTER_PLUGIN_STATIC(AGS_DETECTION, PLUGIN_TYPE_ENGINE_DETECTION, AGSMetaEngineDetection);
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