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/* 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.
*
* $URL$
* $Id$
*
*/
#include "base/plugins.h"
#include "common/debug.h"
#include "common/util.h"
#include "common/hash-str.h"
#include "common/file.h"
#include "common/macresman.h"
#include "common/md5.h"
#include "common/config-manager.h"
#include "engines/advancedDetector.h"
/**
* A list of pointers to ADGameDescription structs (or subclasses thereof).
*/
typedef Common::Array<const ADGameDescription*> ADGameDescList;
/**
* Detect games in specified directory.
* Parameters language and platform are used to pass on values
* specified by the user. I.e. this is used to restrict search scope.
*
* @param fslist FSList to scan or NULL for scanning all specified
* default directories.
* @param params a ADParams struct containing various parameters
* @param language restrict results to specified language only
* @param platform restrict results to specified platform only
* @return list of ADGameDescription (or subclass) pointers corresponding to matched games
*/
static ADGameDescList detectGame(const Common::FSList &fslist, const ADParams ¶ms, Common::Language language, Common::Platform platform, const Common::String &extra);
/**
* Returns list of targets supported by the engine.
* Distinguishes engines with single ID
*/
static GameList gameIDList(const ADParams ¶ms) {
if (params.singleid != NULL) {
GameList gl;
const PlainGameDescriptor *g = params.list;
while (g->gameid) {
if (0 == scumm_stricmp(params.singleid, g->gameid)) {
gl.push_back(GameDescriptor(g->gameid, g->description));
return gl;
}
g++;
}
error("Engine %s doesn't have its singleid specified in ids list", params.singleid);
}
return GameList(params.list);
}
static void upgradeTargetIfNecessary(const ADParams ¶ms) {
if (params.obsoleteList == 0)
return;
Common::String gameid = ConfMan.get("gameid");
for (const ADObsoleteGameID *o = params.obsoleteList; o->from; ++o) {
if (gameid.equalsIgnoreCase(o->from)) {
gameid = o->to;
ConfMan.set("gameid", gameid);
if (o->platform != Common::kPlatformUnknown)
ConfMan.set("platform", Common::getPlatformCode(o->platform));
warning("Target upgraded from %s to %s", o->from, o->to);
// WORKAROUND: Fix for bug #1719463: "DETECTOR: Launching
// undefined target adds launcher entry"
if (ConfMan.hasKey("id_came_from_command_line")) {
warning("Target came from command line. Skipping save");
} else {
ConfMan.flushToDisk();
}
break;
}
}
}
namespace AdvancedDetector {
GameDescriptor findGameID(
const char *gameid,
const PlainGameDescriptor *list,
const ADObsoleteGameID *obsoleteList
) {
// First search the list of supported game IDs for a match.
const PlainGameDescriptor *g = findPlainGameDescriptor(gameid, list);
if (g)
return GameDescriptor(*g);
// If we didn't find the gameid in the main list, check if it
// is an obsolete game id.
if (obsoleteList != 0) {
const ADObsoleteGameID *o = obsoleteList;
while (o->from) {
if (0 == scumm_stricmp(gameid, o->from)) {
g = findPlainGameDescriptor(o->to, list);
if (g && g->description)
return GameDescriptor(gameid, "Obsolete game ID (" + Common::String(g->description) + ")");
else
return GameDescriptor(gameid, "Obsolete game ID");
}
o++;
}
}
// No match found
return GameDescriptor();
}
} // End of namespace AdvancedDetector
static GameDescriptor toGameDescriptor(const ADGameDescription &g, const PlainGameDescriptor *sg) {
const char *title = 0;
const char *extra;
if (g.flags & ADGF_USEEXTRAASTITLE) {
title = g.extra;
extra = "";
} else {
while (sg->gameid) {
if (!scumm_stricmp(g.gameid, sg->gameid))
title = sg->description;
sg++;
}
extra = g.extra;
}
GameDescriptor gd(g.gameid, title, g.language, g.platform);
gd.updateDesc(extra);
return gd;
}
/**
* Generate a preferred target value as
* GAMEID-PLAFORM-LANG
* or (if ADGF_DEMO has been set)
* GAMEID-demo-PLAFORM-LANG
*/
static Common::String generatePreferredTarget(const Common::String &id, const ADGameDescription *desc) {
Common::String res(id);
if (desc->flags & ADGF_DEMO) {
res = res + "-demo";
}
if (desc->flags & ADGF_CD) {
res = res + "-cd";
}
if (desc->platform != Common::kPlatformPC && desc->platform != Common::kPlatformUnknown) {
res = res + "-" + getPlatformAbbrev(desc->platform);
}
if (desc->language != Common::EN_ANY && desc->language != Common::UNK_LANG && !(desc->flags & ADGF_DROPLANGUAGE)) {
res = res + "-" + getLanguageCode(desc->language);
}
return res;
}
static void updateGameDescriptor(GameDescriptor &desc, const ADGameDescription *realDesc, const ADParams ¶ms) {
if (params.singleid != NULL) {
desc["preferredtarget"] = desc["gameid"];
desc["gameid"] = params.singleid;
}
if (!(params.flags & kADFlagDontAugmentPreferredTarget)) {
if (!desc.contains("preferredtarget"))
desc["preferredtarget"] = desc["gameid"];
desc["preferredtarget"] = generatePreferredTarget(desc["preferredtarget"], realDesc);
}
if (params.flags & kADFlagUseExtraAsHint)
desc["extra"] = realDesc->extra;
desc.setGUIOptions(realDesc->guioptions | params.guioptions);
desc.appendGUIOptions(getGameGUIOptionsDescriptionLanguage(realDesc->language));
if (realDesc->flags & ADGF_ADDENGLISH)
desc.appendGUIOptions(getGameGUIOptionsDescriptionLanguage(Common::EN_ANY));
}
GameList AdvancedMetaEngine::detectGames(const Common::FSList &fslist) const {
ADGameDescList matches = detectGame(fslist, params, Common::UNK_LANG, Common::kPlatformUnknown, "");
GameList detectedGames;
// Use fallback detector if there were no matches by other means
if (matches.empty()) {
const ADGameDescription *fallbackDesc = fallbackDetect(fslist);
if (fallbackDesc != 0) {
GameDescriptor desc(toGameDescriptor(*fallbackDesc, params.list));
updateGameDescriptor(desc, fallbackDesc, params);
detectedGames.push_back(desc);
}
} else for (uint i = 0; i < matches.size(); i++) { // Otherwise use the found matches
GameDescriptor desc(toGameDescriptor(*matches[i], params.list));
updateGameDescriptor(desc, matches[i], params);
detectedGames.push_back(desc);
}
return detectedGames;
}
Common::Error AdvancedMetaEngine::createInstance(OSystem *syst, Engine **engine) const {
assert(engine);
upgradeTargetIfNecessary(params);
const ADGameDescription *agdDesc = 0;
Common::Language language = Common::UNK_LANG;
Common::Platform platform = Common::kPlatformUnknown;
Common::String extra;
if (ConfMan.hasKey("language"))
language = Common::parseLanguage(ConfMan.get("language"));
if (ConfMan.hasKey("platform"))
platform = Common::parsePlatform(ConfMan.get("platform"));
if (params.flags & kADFlagUseExtraAsHint)
if (ConfMan.hasKey("extra"))
extra = ConfMan.get("extra");
Common::String gameid = ConfMan.get("gameid");
Common::String path;
if (ConfMan.hasKey("path")) {
path = ConfMan.get("path");
} else {
path = ".";
// This situation may happen only when game was
// launched from a command line with wrong target and
// no path was provided.
//
// A dummy entry will get created and will keep game path
// We mark this entry, so it will not be added to the
// config file.
//
// Fixes bug #1544799
ConfMan.setBool("autoadded", true);
warning("No path was provided. Assuming the data files are in the current directory");
}
Common::FSNode dir(path);
Common::FSList files;
if (!dir.isDirectory() || !dir.getChildren(files, Common::FSNode::kListAll)) {
warning("Game data path does not exist or is not a directory (%s)", path.c_str());
return Common::kNoGameDataFoundError;
}
ADGameDescList matches = detectGame(files, params, language, platform, extra);
if (params.singleid == NULL) {
for (uint i = 0; i < matches.size(); i++) {
if (matches[i]->gameid == gameid) {
agdDesc = matches[i];
break;
}
}
} else if (matches.size() > 0) {
agdDesc = matches[0];
}
if (agdDesc == 0) {
// Use fallback detector if there were no matches by other means
agdDesc = fallbackDetect(files);
if (agdDesc != 0) {
// Seems we found a fallback match. But first perform a basic
// sanity check: the gameid must match.
if (params.singleid == NULL && agdDesc->gameid != gameid)
agdDesc = 0;
}
}
if (agdDesc == 0)
return Common::kNoGameDataFoundError;
// If the GUI options were updated, we catch this here and update them in the users config
// file transparently.
Common::String lang = getGameGUIOptionsDescriptionLanguage(agdDesc->language);
if (agdDesc->flags & ADGF_ADDENGLISH)
lang += " " + getGameGUIOptionsDescriptionLanguage(Common::EN_ANY);
Common::updateGameGUIOptions(agdDesc->guioptions | params.guioptions, lang);
debug(2, "Running %s", toGameDescriptor(*agdDesc, params.list).description().c_str());
if (!createInstance(syst, engine, agdDesc))
return Common::kNoGameDataFoundError;
else
return Common::kNoError;
}
struct SizeMD5 {
int size;
char md5[32+1];
};
typedef Common::HashMap<Common::String, SizeMD5, Common::IgnoreCase_Hash, Common::IgnoreCase_EqualTo> SizeMD5Map;
typedef Common::HashMap<Common::String, Common::FSNode, Common::IgnoreCase_Hash, Common::IgnoreCase_EqualTo> FileMap;
static void reportUnknown(const Common::FSNode &path, const SizeMD5Map &filesSizeMD5) {
// TODO: This message should be cleaned up / made more specific.
// For example, we should specify at least which engine triggered this.
//
// Might also be helpful to display the full path (for when this is used
// from the mass detector).
printf("The game in '%s' seems to be unknown.\n", path.getPath().c_str());
printf("Please, report the following data to the ScummVM team along with name\n");
printf("of the game you tried to add and its version/language/etc.:\n");
for (SizeMD5Map::const_iterator file = filesSizeMD5.begin(); file != filesSizeMD5.end(); ++file)
printf(" \"%s\", \"%s\", %d\n", file->_key.c_str(), file->_value.md5, file->_value.size);
printf("\n");
}
static ADGameDescList detectGameFilebased(const FileMap &allFiles, const ADParams ¶ms);
static void composeFileHashMap(const Common::FSList &fslist, FileMap &allFiles, int depth, const char * const *directoryGlobs) {
if (depth <= 0)
return;
if (fslist.empty())
return;
// First we compose a hashmap of all files in fslist.
// Includes nifty stuff like removing trailing dots and ignoring case.
for (Common::FSList::const_iterator file = fslist.begin(); file != fslist.end(); ++file) {
if (file->isDirectory()) {
Common::FSList files;
if (!directoryGlobs)
continue;
bool matched = false;
for (const char *glob = *directoryGlobs; *glob; glob++)
if (file->getName().matchString(glob, true)) {
matched = true;
break;
}
if (!matched)
continue;
if (!file->getChildren(files, Common::FSNode::kListAll))
continue;
composeFileHashMap(files, allFiles, depth - 1, directoryGlobs);
}
Common::String tstr = file->getName();
// Strip any trailing dot
if (tstr.lastChar() == '.')
tstr.deleteLastChar();
allFiles[tstr] = *file; // Record the presence of this file
}
}
static ADGameDescList detectGame(const Common::FSList &fslist, const ADParams ¶ms, Common::Language language, Common::Platform platform, const Common::String &extra) {
FileMap allFiles;
SizeMD5Map filesSizeMD5;
const ADGameFileDescription *fileDesc;
const ADGameDescription *g;
const byte *descPtr;
if (fslist.empty())
return ADGameDescList();
Common::FSNode parent = fslist.begin()->getParent();
debug(3, "Starting detection in dir '%s'", parent.getPath().c_str());
// First we compose a hashmap of all files in fslist.
// Includes nifty stuff like removing trailing dots and ignoring case.
composeFileHashMap(fslist, allFiles, (params.depth == 0 ? 1 : params.depth), params.directoryGlobs);
// Check which files are included in some ADGameDescription *and* present
// in fslist. Compute MD5s and file sizes for these files.
for (descPtr = params.descs; ((const ADGameDescription *)descPtr)->gameid != 0; descPtr += params.descItemSize) {
g = (const ADGameDescription *)descPtr;
for (fileDesc = g->filesDescriptions; fileDesc->fileName; fileDesc++) {
Common::String fname = fileDesc->fileName;
SizeMD5 tmp;
if (g->flags & ADGF_MACRESFORK) {
Common::MacResManager *macResMan = new Common::MacResManager();
if (macResMan->open(parent, fname)) {
if (!macResMan->getResForkMD5(tmp.md5, params.md5Bytes))
tmp.md5[0] = 0;
tmp.size = macResMan->getResForkSize();
debug(3, "> '%s': '%s'", fname.c_str(), tmp.md5);
filesSizeMD5[fname] = tmp;
}
delete macResMan;
} else {
if (allFiles.contains(fname) && !filesSizeMD5.contains(fname)) {
debug(3, "+ %s", fname.c_str());
Common::File testFile;
if (testFile.open(allFiles[fname])) {
tmp.size = (int32)testFile.size();
if (!md5_file_string(testFile, tmp.md5, params.md5Bytes))
tmp.md5[0] = 0;
} else {
tmp.size = -1;
tmp.md5[0] = 0;
}
debug(3, "> '%s': '%s'", fname.c_str(), tmp.md5);
filesSizeMD5[fname] = tmp;
}
}
}
}
ADGameDescList matched;
int maxFilesMatched = 0;
bool gotAnyMatchesWithAllFiles = false;
// MD5 based matching
uint i;
for (i = 0, descPtr = params.descs; ((const ADGameDescription *)descPtr)->gameid != 0; descPtr += params.descItemSize, ++i) {
g = (const ADGameDescription *)descPtr;
bool fileMissing = false;
// Do not even bother to look at entries which do not have matching
// language and platform (if specified).
if ((language != Common::UNK_LANG && g->language != Common::UNK_LANG && g->language != language
&& !(language == Common::EN_ANY && (g->flags & ADGF_ADDENGLISH))) ||
(platform != Common::kPlatformUnknown && g->platform != Common::kPlatformUnknown && g->platform != platform)) {
continue;
}
if ((params.flags & kADFlagUseExtraAsHint) && !extra.empty() && g->extra != extra)
continue;
bool allFilesPresent = true;
// Try to match all files for this game
for (fileDesc = g->filesDescriptions; fileDesc->fileName; fileDesc++) {
Common::String tstr = fileDesc->fileName;
if (!filesSizeMD5.contains(tstr)) {
fileMissing = true;
allFilesPresent = false;
break;
}
if (fileDesc->md5 != NULL && 0 != strcmp(fileDesc->md5, filesSizeMD5[tstr].md5)) {
debug(3, "MD5 Mismatch. Skipping (%s) (%s)", fileDesc->md5, filesSizeMD5[tstr].md5);
fileMissing = true;
break;
}
if (fileDesc->fileSize != -1 && fileDesc->fileSize != filesSizeMD5[tstr].size) {
debug(3, "Size Mismatch. Skipping");
fileMissing = true;
break;
}
debug(3, "Matched file: %s", tstr.c_str());
}
// We found at least one entry with all required files present.
// That means that we got new variant of the game.
//
// Wihtout this check we would have errorneous checksum display
// where only located files will be enlisted.
//
// Potentially this could rule out variants where some particular file
// is really missing, but the developers should better know about such
// cases.
if (allFilesPresent)
gotAnyMatchesWithAllFiles = true;
if (!fileMissing) {
debug(2, "Found game: %s (%s %s/%s) (%d)", g->gameid, g->extra,
getPlatformDescription(g->platform), getLanguageDescription(g->language), i);
// Count the number of matching files. Then, only keep those
// entries which match a maximal amount of files.
int curFilesMatched = 0;
for (fileDesc = g->filesDescriptions; fileDesc->fileName; fileDesc++)
curFilesMatched++;
if (curFilesMatched > maxFilesMatched) {
debug(2, " ... new best match, removing all previous candidates");
maxFilesMatched = curFilesMatched;
for (uint j = 0; j < matched.size();) {
if (matched[j]->flags & ADGF_KEEPMATCH)
++j;
else
matched.remove_at(j);
}
matched.push_back(g);
} else if (curFilesMatched == maxFilesMatched) {
matched.push_back(g);
} else {
debug(2, " ... skipped");
}
} else {
debug(5, "Skipping game: %s (%s %s/%s) (%d)", g->gameid, g->extra,
getPlatformDescription(g->platform), getLanguageDescription(g->language), i);
}
}
// We didn't find a match
if (matched.empty()) {
if (!filesSizeMD5.empty() && gotAnyMatchesWithAllFiles) {
reportUnknown(parent, filesSizeMD5);
}
// Filename based fallback
if (params.fileBasedFallback != 0)
matched = detectGameFilebased(allFiles, params);
}
return matched;
}
/**
* Check for each ADFileBasedFallback record whether all files listed
* in it are present. If multiple pass this test, we pick the one with
* the maximal number of matching files. In case of a tie, the entry
* coming first in the list is chosen.
*/
static ADGameDescList detectGameFilebased(const FileMap &allFiles, const ADParams ¶ms) {
const ADFileBasedFallback *ptr;
const char* const* filenames;
int maxNumMatchedFiles = 0;
const ADGameDescription *matchedDesc = 0;
for (ptr = params.fileBasedFallback; ptr->desc; ++ptr) {
const ADGameDescription *agdesc = (const ADGameDescription *)ptr->desc;
int numMatchedFiles = 0;
bool fileMissing = false;
for (filenames = ptr->filenames; *filenames; ++filenames) {
debug(3, "++ %s", *filenames);
if (!allFiles.contains(*filenames)) {
fileMissing = true;
break;
}
numMatchedFiles++;
}
if (!fileMissing) {
debug(4, "Matched: %s", agdesc->gameid);
if (numMatchedFiles > maxNumMatchedFiles) {
matchedDesc = agdesc;
maxNumMatchedFiles = numMatchedFiles;
debug(4, "and overriden");
}
}
}
ADGameDescList matched;
if (matchedDesc) { // We got a match
matched.push_back(matchedDesc);
if (params.flags & kADFlagPrintWarningOnFileBasedFallback) {
printf("Your game version has been detected using filename matching as a\n");
printf("variant of %s.\n", matchedDesc->gameid);
printf("If this is an original and unmodified version, please report any\n");
printf("information previously printed by ScummVM to the team.\n");
}
}
return matched;
}
GameList AdvancedMetaEngine::getSupportedGames() const {
return gameIDList(params);
}
GameDescriptor AdvancedMetaEngine::findGame(const char *gameid) const {
return AdvancedDetector::findGameID(gameid, params.list, params.obsoleteList);
}
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