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vcmi/lib/CModHandler.cpp
Ivan Savenko 7c410ab5ce Fix potential crash due to iterator invalidation
2022-11-30 18:07:21 +02:00

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/*
* CModHandler.cpp, part of VCMI engine
*
* Authors: listed in file AUTHORS in main folder
*
* License: GNU General Public License v2.0 or later
* Full text of license available in license.txt file, in main folder
*
*/
#include "StdInc.h"
#include "CModHandler.h"
#include "mapObjects/CObjectClassesHandler.h"
#include "filesystem/FileStream.h"
#include "filesystem/AdapterLoaders.h"
#include "filesystem/CFilesystemLoader.h"
#include "CCreatureHandler.h"
#include "CArtHandler.h"
#include "CTownHandler.h"
#include "CHeroHandler.h"
#include "mapObjects/CObjectHandler.h"
#include "StringConstants.h"
#include "CStopWatch.h"
#include "IHandlerBase.h"
#include "spells/CSpellHandler.h"
#include "CSkillHandler.h"
#include "ScriptHandler.h"
#include "BattleFieldHandler.h"
#include "ObstacleHandler.h"
#include <vstd/StringUtils.h>
VCMI_LIB_NAMESPACE_BEGIN
CIdentifierStorage::CIdentifierStorage():
state(LOADING)
{
}
CIdentifierStorage::~CIdentifierStorage()
{
}
void CIdentifierStorage::checkIdentifier(std::string & ID)
{
if (boost::algorithm::ends_with(ID, "."))
logMod->warn("BIG WARNING: identifier %s seems to be broken!", ID);
else
{
size_t pos = 0;
do
{
if (std::tolower(ID[pos]) != ID[pos] ) //Not in camelCase
{
logMod->warn("Warning: identifier %s is not in camelCase!", ID);
ID[pos] = std::tolower(ID[pos]);// Try to fix the ID
}
pos = ID.find('.', pos);
}
while(pos++ != std::string::npos);
}
}
CIdentifierStorage::ObjectCallback::ObjectCallback(
std::string localScope, std::string remoteScope, std::string type,
std::string name, const std::function<void(si32)> & callback,
bool optional):
localScope(localScope),
remoteScope(remoteScope),
type(type),
name(name),
callback(callback),
optional(optional)
{}
void CIdentifierStorage::requestIdentifier(ObjectCallback callback)
{
checkIdentifier(callback.type);
checkIdentifier(callback.name);
assert(!callback.localScope.empty());
if (state != FINISHED) // enqueue request if loading is still in progress
scheduledRequests.push_back(callback);
else // execute immediately for "late" requests
resolveIdentifier(callback);
}
void CIdentifierStorage::requestIdentifier(std::string scope, std::string type, std::string name, const std::function<void(si32)> & callback)
{
auto pair = vstd::splitStringToPair(name, ':'); // remoteScope:name
requestIdentifier(ObjectCallback(scope, pair.first, type, pair.second, callback, false));
}
void CIdentifierStorage::requestIdentifier(std::string scope, std::string fullName, const std::function<void(si32)>& callback)
{
auto scopeAndFullName = vstd::splitStringToPair(fullName, ':');
auto typeAndName = vstd::splitStringToPair(scopeAndFullName.second, '.');
requestIdentifier(ObjectCallback(scope, scopeAndFullName.first, typeAndName.first, typeAndName.second, callback, false));
}
void CIdentifierStorage::requestIdentifier(std::string type, const JsonNode & name, const std::function<void(si32)> & callback)
{
auto pair = vstd::splitStringToPair(name.String(), ':'); // remoteScope:name
requestIdentifier(ObjectCallback(name.meta, pair.first, type, pair.second, callback, false));
}
void CIdentifierStorage::requestIdentifier(const JsonNode & name, const std::function<void(si32)> & callback)
{
auto pair = vstd::splitStringToPair(name.String(), ':'); // remoteScope:<type.name>
auto pair2 = vstd::splitStringToPair(pair.second, '.'); // type.name
requestIdentifier(ObjectCallback(name.meta, pair.first, pair2.first, pair2.second, callback, false));
}
void CIdentifierStorage::tryRequestIdentifier(std::string scope, std::string type, std::string name, const std::function<void(si32)> & callback)
{
auto pair = vstd::splitStringToPair(name, ':'); // remoteScope:name
requestIdentifier(ObjectCallback(scope, pair.first, type, pair.second, callback, true));
}
void CIdentifierStorage::tryRequestIdentifier(std::string type, const JsonNode & name, const std::function<void(si32)> & callback)
{
auto pair = vstd::splitStringToPair(name.String(), ':'); // remoteScope:name
requestIdentifier(ObjectCallback(name.meta, pair.first, type, pair.second, callback, true));
}
boost::optional<si32> CIdentifierStorage::getIdentifier(std::string scope, std::string type, std::string name, bool silent)
{
auto pair = vstd::splitStringToPair(name, ':'); // remoteScope:name
auto idList = getPossibleIdentifiers(ObjectCallback(scope, pair.first, type, pair.second, std::function<void(si32)>(), silent));
if (idList.size() == 1)
return idList.front().id;
if (!silent)
logMod->error("Failed to resolve identifier %s of type %s from mod %s", name , type ,scope);
return boost::optional<si32>();
}
boost::optional<si32> CIdentifierStorage::getIdentifier(std::string type, const JsonNode & name, bool silent)
{
auto pair = vstd::splitStringToPair(name.String(), ':'); // remoteScope:name
auto idList = getPossibleIdentifiers(ObjectCallback(name.meta, pair.first, type, pair.second, std::function<void(si32)>(), silent));
if (idList.size() == 1)
return idList.front().id;
if (!silent)
logMod->error("Failed to resolve identifier %s of type %s from mod %s", name.String(), type, name.meta);
return boost::optional<si32>();
}
boost::optional<si32> CIdentifierStorage::getIdentifier(const JsonNode & name, bool silent)
{
auto pair = vstd::splitStringToPair(name.String(), ':'); // remoteScope:<type.name>
auto pair2 = vstd::splitStringToPair(pair.second, '.'); // type.name
auto idList = getPossibleIdentifiers(ObjectCallback(name.meta, pair.first, pair2.first, pair2.second, std::function<void(si32)>(), silent));
if (idList.size() == 1)
return idList.front().id;
if (!silent)
logMod->error("Failed to resolve identifier %s of type %s from mod %s", name.String(), pair2.first, name.meta);
return boost::optional<si32>();
}
boost::optional<si32> CIdentifierStorage::getIdentifier(std::string scope, std::string fullName, bool silent)
{
auto pair = vstd::splitStringToPair(fullName, ':'); // remoteScope:<type.name>
auto pair2 = vstd::splitStringToPair(pair.second, '.'); // type.name
auto idList = getPossibleIdentifiers(ObjectCallback(scope, pair.first, pair2.first, pair2.second, std::function<void(si32)>(), silent));
if (idList.size() == 1)
return idList.front().id;
if (!silent)
logMod->error("Failed to resolve identifier %s of type %s from mod %s", fullName, pair2.first, scope);
return boost::optional<si32>();
}
void CIdentifierStorage::registerObject(std::string scope, std::string type, std::string name, si32 identifier)
{
ObjectData data;
data.scope = scope;
data.id = identifier;
std::string fullID = type + '.' + name;
checkIdentifier(fullID);
std::pair<const std::string, ObjectData> mapping = std::make_pair(fullID, data);
if(!vstd::containsMapping(registeredObjects, mapping))
{
logMod->trace("registered %s as %s:%s", fullID, scope, identifier);
registeredObjects.insert(mapping);
}
}
std::vector<CIdentifierStorage::ObjectData> CIdentifierStorage::getPossibleIdentifiers(const ObjectCallback & request)
{
std::set<std::string> allowedScopes;
bool isValidScope = true;
// called have not specified destination mod explicitly
if (request.remoteScope.empty())
{
// FIXME: temporary, for queries from map loader allow access to any identifer
// should be changed to list of mods that are marked as required by current map
if (request.localScope == "map")
{
for (auto const & modName : VLC->modh->getActiveMods())
allowedScopes.insert(modName);
}
// normally ID's from all required mods, own mod and virtual "core" mod are allowed
else if(request.localScope != "core" && !request.localScope.empty())
{
allowedScopes = VLC->modh->getModDependencies(request.localScope, isValidScope);
if(!isValidScope)
return std::vector<ObjectData>();
allowedScopes.insert(request.localScope);
}
// all mods can access built-in mod
allowedScopes.insert("core");
}
else
{
//if destination mod was specified explicitly, restrict lookup to this mod
if(request.remoteScope == "core" )
{
//"core" mod is an implicit dependency for all mods, allow access into it
allowedScopes.insert(request.remoteScope);
}
else if(request.remoteScope == request.localScope )
{
// allow self-access
allowedScopes.insert(request.remoteScope);
}
else
{
// allow access only if mod is in our dependencies
auto myDeps = VLC->modh->getModDependencies(request.localScope, isValidScope);
if(!isValidScope)
return std::vector<ObjectData>();
if(myDeps.count(request.remoteScope))
allowedScopes.insert(request.remoteScope);
}
}
std::string fullID = request.type + '.' + request.name;
auto entries = registeredObjects.equal_range(fullID);
if (entries.first != entries.second)
{
std::vector<ObjectData> locatedIDs;
for (auto it = entries.first; it != entries.second; it++)
{
if (vstd::contains(allowedScopes, it->second.scope))
{
locatedIDs.push_back(it->second);
}
}
return locatedIDs;
}
return std::vector<ObjectData>();
}
bool CIdentifierStorage::resolveIdentifier(const ObjectCallback & request)
{
auto identifiers = getPossibleIdentifiers(request);
if (identifiers.size() == 1) // normally resolved ID
{
request.callback(identifiers.front().id);
return true;
}
if (request.optional && identifiers.empty()) // failed to resolve optinal ID
{
return true;
}
// error found. Try to generate some debug info
if (identifiers.size() == 0)
logMod->error("Unknown identifier!");
else
logMod->error("Ambiguous identifier request!");
logMod->error("Request for %s.%s from mod %s", request.type, request.name, request.localScope);
for (auto id : identifiers)
{
logMod->error("\tID is available in mod %s", id.scope);
}
return false;
}
void CIdentifierStorage::finalize()
{
state = FINALIZING;
bool errorsFound = false;
while ( !scheduledRequests.empty() )
{
// Use local copy since new requests may appear during resolving, invalidating any iterators
auto request = scheduledRequests.back();
scheduledRequests.pop_back();
if (!resolveIdentifier(request))
errorsFound = true;
}
if (errorsFound)
{
for(auto object : registeredObjects)
{
logMod->trace("%s : %s -> %d", object.second.scope, object.first, object.second.id);
}
logMod->error("All known identifiers were dumped into log file");
}
assert(errorsFound == false);
state = FINISHED;
}
ContentTypeHandler::ContentTypeHandler(IHandlerBase * handler, std::string objectName):
handler(handler),
objectName(objectName),
originalData(handler->loadLegacyData((size_t)VLC->modh->settings.data["textData"][objectName].Float()))
{
for(auto & node : originalData)
{
node.setMeta("core");
}
}
bool ContentTypeHandler::preloadModData(std::string modName, std::vector<std::string> fileList, bool validate)
{
bool result;
JsonNode data = JsonUtils::assembleFromFiles(fileList, result);
data.setMeta(modName);
ModInfo & modInfo = modData[modName];
for(auto entry : data.Struct())
{
size_t colon = entry.first.find(':');
if (colon == std::string::npos)
{
// normal object, local to this mod
modInfo.modData[entry.first].swap(entry.second);
}
else
{
std::string remoteName = entry.first.substr(0, colon);
std::string objectName = entry.first.substr(colon + 1);
// patching this mod? Send warning and continue - this situation can be handled normally
if (remoteName == modName)
logMod->warn("Redundant namespace definition for %s", objectName);
logMod->trace("Patching object %s (%s) from %s", objectName, remoteName, modName);
JsonNode & remoteConf = modData[remoteName].patches[objectName];
JsonUtils::merge(remoteConf, entry.second);
}
}
return result;
}
bool ContentTypeHandler::loadMod(std::string modName, bool validate)
{
ModInfo & modInfo = modData[modName];
bool result = true;
auto performValidate = [&,this](JsonNode & data, const std::string & name){
handler->beforeValidate(data);
if (validate)
result &= JsonUtils::validate(data, "vcmi:" + objectName, name);
};
// apply patches
if (!modInfo.patches.isNull())
JsonUtils::merge(modInfo.modData, modInfo.patches);
for(auto & entry : modInfo.modData.Struct())
{
const std::string & name = entry.first;
JsonNode & data = entry.second;
if (vstd::contains(data.Struct(), "index") && !data["index"].isNull())
{
// try to add H3 object data
size_t index = static_cast<size_t>(data["index"].Float());
if(originalData.size() > index)
{
logMod->trace("found original data in loadMod(%s) at index %d", name, index);
JsonUtils::merge(originalData[index], data);
std::swap(originalData[index], data);
originalData[index].clear(); // do not use same data twice (same ID)
}
else
{
logMod->warn("no original data in loadMod(%s) at index %d", name, index);
}
performValidate(data, name);
handler->loadObject(modName, name, data, index);
}
else
{
// normal new object
logMod->trace("no index in loadMod(%s)", name);
performValidate(data,name);
handler->loadObject(modName, name, data);
}
}
return result;
}
void ContentTypeHandler::loadCustom()
{
handler->loadCustom();
}
void ContentTypeHandler::afterLoadFinalization()
{
handler->afterLoadFinalization();
}
CContentHandler::CContentHandler()
{
}
void CContentHandler::init()
{
handlers.insert(std::make_pair("heroClasses", ContentTypeHandler(&VLC->heroh->classes, "heroClass")));
handlers.insert(std::make_pair("artifacts", ContentTypeHandler(VLC->arth, "artifact")));
handlers.insert(std::make_pair("creatures", ContentTypeHandler(VLC->creh, "creature")));
handlers.insert(std::make_pair("factions", ContentTypeHandler(VLC->townh, "faction")));
handlers.insert(std::make_pair("objects", ContentTypeHandler(VLC->objtypeh, "object")));
handlers.insert(std::make_pair("heroes", ContentTypeHandler(VLC->heroh, "hero")));
handlers.insert(std::make_pair("spells", ContentTypeHandler(VLC->spellh, "spell")));
handlers.insert(std::make_pair("skills", ContentTypeHandler(VLC->skillh, "skill")));
handlers.insert(std::make_pair("templates", ContentTypeHandler((IHandlerBase *)VLC->tplh, "template")));
#if SCRIPTING_ENABLED
handlers.insert(std::make_pair("scripts", ContentTypeHandler(VLC->scriptHandler, "script")));
#endif
handlers.insert(std::make_pair("battlefields", ContentTypeHandler(VLC->battlefieldsHandler, "battlefield")));
handlers.insert(std::make_pair("obstacles", ContentTypeHandler(VLC->obstacleHandler, "obstacle")));
//TODO: any other types of moddables?
}
bool CContentHandler::preloadModData(std::string modName, JsonNode modConfig, bool validate)
{
bool result = true;
for(auto & handler : handlers)
{
result &= handler.second.preloadModData(modName, modConfig[handler.first].convertTo<std::vector<std::string> >(), validate);
}
return result;
}
bool CContentHandler::loadMod(std::string modName, bool validate)
{
bool result = true;
for(auto & handler : handlers)
{
result &= handler.second.loadMod(modName, validate);
}
return result;
}
void CContentHandler::loadCustom()
{
for(auto & handler : handlers)
{
handler.second.loadCustom();
}
}
void CContentHandler::afterLoadFinalization()
{
for(auto & handler : handlers)
{
handler.second.afterLoadFinalization();
}
}
void CContentHandler::preloadData(CModInfo & mod)
{
bool validate = (mod.validation != CModInfo::PASSED);
// print message in format [<8-symbols checksum>] <modname>
logMod->info("\t\t[%08x]%s", mod.checksum, mod.name);
if (validate && mod.identifier != "core")
{
if (!JsonUtils::validate(mod.config, "vcmi:mod", mod.identifier))
mod.validation = CModInfo::FAILED;
}
if (!preloadModData(mod.identifier, mod.config, validate))
mod.validation = CModInfo::FAILED;
}
void CContentHandler::load(CModInfo & mod)
{
bool validate = (mod.validation != CModInfo::PASSED);
if (!loadMod(mod.identifier, validate))
mod.validation = CModInfo::FAILED;
if (validate)
{
if (mod.validation != CModInfo::FAILED)
logMod->info("\t\t[DONE] %s", mod.name);
else
logMod->error("\t\t[FAIL] %s", mod.name);
}
else
logMod->info("\t\t[SKIP] %s", mod.name);
}
const ContentTypeHandler & CContentHandler::operator[](const std::string & name) const
{
return handlers.at(name);
}
static JsonNode loadModSettings(std::string path)
{
if (CResourceHandler::get("local")->existsResource(ResourceID(path)))
{
return JsonNode(ResourceID(path, EResType::TEXT));
}
// Probably new install. Create initial configuration
CResourceHandler::get("local")->createResource(path);
return JsonNode();
}
JsonNode addMeta(JsonNode config, std::string meta)
{
config.setMeta(meta);
return config;
}
CModInfo::Version CModInfo::Version::GameVersion()
{
return Version(VCMI_VERSION_MAJOR, VCMI_VERSION_MINOR, VCMI_VERSION_PATCH);
}
CModInfo::Version CModInfo::Version::fromString(std::string from)
{
int major = 0, minor = 0, patch = 0;
try
{
auto pointPos = from.find('.');
major = std::stoi(from.substr(0, pointPos));
if(pointPos != std::string::npos)
{
from = from.substr(pointPos + 1);
pointPos = from.find('.');
minor = std::stoi(from.substr(0, pointPos));
if(pointPos != std::string::npos)
patch = std::stoi(from.substr(pointPos + 1));
}
}
catch(const std::invalid_argument & e)
{
return Version();
}
return Version(major, minor, patch);
}
std::string CModInfo::Version::toString() const
{
return std::to_string(major) + '.' + std::to_string(minor) + '.' + std::to_string(patch);
}
bool CModInfo::Version::compatible(const Version & other, bool checkMinor, bool checkPatch) const
{
return (major == other.major &&
(!checkMinor || minor >= other.minor) &&
(!checkPatch || minor > other.minor || (minor == other.minor && patch >= other.patch)));
}
bool CModInfo::Version::isNull() const
{
return major == 0 && minor == 0 && patch == 0;
}
CModInfo::CModInfo():
checksum(0),
enabled(false),
validation(PENDING)
{
}
CModInfo::CModInfo(std::string identifier,const JsonNode & local, const JsonNode & config):
identifier(identifier),
name(config["name"].String()),
description(config["description"].String()),
dependencies(config["depends"].convertTo<std::set<std::string> >()),
conflicts(config["conflicts"].convertTo<std::set<std::string> >()),
checksum(0),
enabled(false),
validation(PENDING),
config(addMeta(config, identifier))
{
version = Version::fromString(config["version"].String());
if(!config["compatibility"].isNull())
{
vcmiCompatibleMin = Version::fromString(config["compatibility"]["min"].String());
vcmiCompatibleMax = Version::fromString(config["compatibility"]["max"].String());
}
loadLocalData(local);
}
JsonNode CModInfo::saveLocalData() const
{
std::ostringstream stream;
stream << std::noshowbase << std::hex << std::setw(8) << std::setfill('0') << checksum;
JsonNode conf;
conf["active"].Bool() = enabled;
conf["validated"].Bool() = validation != FAILED;
conf["checksum"].String() = stream.str();
return conf;
}
std::string CModInfo::getModDir(std::string name)
{
return "MODS/" + boost::algorithm::replace_all_copy(name, ".", "/MODS/");
}
std::string CModInfo::getModFile(std::string name)
{
return getModDir(name) + "/mod.json";
}
void CModInfo::updateChecksum(ui32 newChecksum)
{
// comment-out next line to force validation of all mods ignoring checksum
if (newChecksum != checksum)
{
checksum = newChecksum;
validation = PENDING;
}
}
void CModInfo::loadLocalData(const JsonNode & data)
{
bool validated = false;
enabled = true;
checksum = 0;
if (data.getType() == JsonNode::JsonType::DATA_BOOL)
{
enabled = data.Bool();
}
if (data.getType() == JsonNode::JsonType::DATA_STRUCT)
{
enabled = data["active"].Bool();
validated = data["validated"].Bool();
checksum = strtol(data["checksum"].String().c_str(), nullptr, 16);
}
//check compatibility
bool wasEnabled = enabled;
enabled = enabled && (vcmiCompatibleMin.isNull() || Version::GameVersion().compatible(vcmiCompatibleMin));
enabled = enabled && (vcmiCompatibleMax.isNull() || vcmiCompatibleMax.compatible(Version::GameVersion()));
if(wasEnabled && !enabled)
logGlobal->warn("Mod %s is incompatible with current version of VCMI and cannot be enabled", name);
if (enabled)
validation = validated ? PASSED : PENDING;
else
validation = validated ? PASSED : FAILED;
}
CModHandler::CModHandler() : content(std::make_shared<CContentHandler>())
{
modules.COMMANDERS = false;
modules.STACK_ARTIFACT = false;
modules.STACK_EXP = false;
modules.MITHRIL = false;
for (int i = 0; i < GameConstants::RESOURCE_QUANTITY; ++i)
{
identifiers.registerObject("core", "resource", GameConstants::RESOURCE_NAMES[i], i);
}
for(int i=0; i<GameConstants::PRIMARY_SKILLS; ++i)
{
identifiers.registerObject("core", "primSkill", PrimarySkill::names[i], i);
identifiers.registerObject("core", "primarySkill", PrimarySkill::names[i], i);
}
}
CModHandler::~CModHandler()
{
}
void CModHandler::loadConfigFromFile (std::string name)
{
std::string paths;
for(auto& p : CResourceHandler::get()->getResourceNames(ResourceID("config/" + name)))
{
paths += p.string() + ", ";
}
paths = paths.substr(0, paths.size() - 2);
logMod->debug("Loading hardcoded features settings from [%s], result:", paths);
settings.data = JsonUtils::assembleFromFiles("config/" + name);
const JsonNode & hardcodedFeatures = settings.data["hardcodedFeatures"];
settings.MAX_HEROES_AVAILABLE_PER_PLAYER = static_cast<int>(hardcodedFeatures["MAX_HEROES_AVAILABLE_PER_PLAYER"].Integer());
logMod->debug("\tMAX_HEROES_AVAILABLE_PER_PLAYER\t%d", settings.MAX_HEROES_AVAILABLE_PER_PLAYER);
settings.MAX_HEROES_ON_MAP_PER_PLAYER = static_cast<int>(hardcodedFeatures["MAX_HEROES_ON_MAP_PER_PLAYER"].Integer());
logMod->debug("\tMAX_HEROES_ON_MAP_PER_PLAYER\t%d", settings.MAX_HEROES_ON_MAP_PER_PLAYER);
settings.CREEP_SIZE = static_cast<int>(hardcodedFeatures["CREEP_SIZE"].Integer());
logMod->debug("\tCREEP_SIZE\t%d", settings.CREEP_SIZE);
settings.WEEKLY_GROWTH = static_cast<int>(hardcodedFeatures["WEEKLY_GROWTH_PERCENT"].Integer());
logMod->debug("\tWEEKLY_GROWTH\t%d", settings.WEEKLY_GROWTH);
settings.NEUTRAL_STACK_EXP = static_cast<int>(hardcodedFeatures["NEUTRAL_STACK_EXP_DAILY"].Integer());
logMod->debug("\tNEUTRAL_STACK_EXP\t%d", settings.NEUTRAL_STACK_EXP);
settings.MAX_BUILDING_PER_TURN = static_cast<int>(hardcodedFeatures["MAX_BUILDING_PER_TURN"].Integer());
logMod->debug("\tMAX_BUILDING_PER_TURN\t%d", settings.MAX_BUILDING_PER_TURN);
settings.DWELLINGS_ACCUMULATE_CREATURES = hardcodedFeatures["DWELLINGS_ACCUMULATE_CREATURES"].Bool();
logMod->debug("\tDWELLINGS_ACCUMULATE_CREATURES\t%d", static_cast<int>(settings.DWELLINGS_ACCUMULATE_CREATURES));
settings.ALL_CREATURES_GET_DOUBLE_MONTHS = hardcodedFeatures["ALL_CREATURES_GET_DOUBLE_MONTHS"].Bool();
logMod->debug("\tALL_CREATURES_GET_DOUBLE_MONTHS\t%d", static_cast<int>(settings.ALL_CREATURES_GET_DOUBLE_MONTHS));
settings.WINNING_HERO_WITH_NO_TROOPS_RETREATS = hardcodedFeatures["WINNING_HERO_WITH_NO_TROOPS_RETREATS"].Bool();
logMod->debug("\tWINNING_HERO_WITH_NO_TROOPS_RETREATS\t%d", static_cast<int>(settings.WINNING_HERO_WITH_NO_TROOPS_RETREATS));
settings.BLACK_MARKET_MONTHLY_ARTIFACTS_CHANGE = hardcodedFeatures["BLACK_MARKET_MONTHLY_ARTIFACTS_CHANGE"].Bool();
logMod->debug("\tBLACK_MARKET_MONTHLY_ARTIFACTS_CHANGE\t%d", static_cast<int>(settings.BLACK_MARKET_MONTHLY_ARTIFACTS_CHANGE));
settings.NO_RANDOM_SPECIAL_WEEKS_AND_MONTHS = hardcodedFeatures["NO_RANDOM_SPECIAL_WEEKS_AND_MONTHS"].Bool();
logMod->debug("\tNO_RANDOM_SPECIAL_WEEKS_AND_MONTHS\t%d", static_cast<int>(settings.NO_RANDOM_SPECIAL_WEEKS_AND_MONTHS));
const JsonNode & gameModules = settings.data["modules"];
modules.STACK_EXP = gameModules["STACK_EXPERIENCE"].Bool();
logMod->debug("\tSTACK_EXP\t%d", static_cast<int>(modules.STACK_EXP));
modules.STACK_ARTIFACT = gameModules["STACK_ARTIFACTS"].Bool();
logMod->debug("\tSTACK_ARTIFACT\t%d", static_cast<int>(modules.STACK_ARTIFACT));
modules.COMMANDERS = gameModules["COMMANDERS"].Bool();
logMod->debug("\tCOMMANDERS\t%d", static_cast<int>(modules.COMMANDERS));
modules.MITHRIL = gameModules["MITHRIL"].Bool();
logMod->debug("\tMITHRIL\t%d", static_cast<int>(modules.MITHRIL));
}
// currentList is passed by value to get current list of depending mods
bool CModHandler::hasCircularDependency(TModID modID, std::set <TModID> currentList) const
{
const CModInfo & mod = allMods.at(modID);
// Mod already present? We found a loop
if (vstd::contains(currentList, modID))
{
logMod->error("Error: Circular dependency detected! Printing dependency list:");
logMod->error("\t%s -> ", mod.name);
return true;
}
currentList.insert(modID);
// recursively check every dependency of this mod
for(const TModID & dependency : mod.dependencies)
{
if (hasCircularDependency(dependency, currentList))
{
logMod->error("\t%s ->\n", mod.name); // conflict detected, print dependency list
return true;
}
}
return false;
}
bool CModHandler::checkDependencies(const std::vector <TModID> & input) const
{
for(const TModID & id : input)
{
const CModInfo & mod = allMods.at(id);
for(const TModID & dep : mod.dependencies)
{
if(!vstd::contains(input, dep))
{
logMod->error("Error: Mod %s requires missing %s!", mod.name, dep);
return false;
}
}
for(const TModID & conflicting : mod.conflicts)
{
if(vstd::contains(input, conflicting))
{
logMod->error("Error: Mod %s conflicts with %s!", mod.name, allMods.at(conflicting).name);
return false;
}
}
if(hasCircularDependency(id))
return false;
}
return true;
}
// Returned vector affects the resource loaders call order (see CFilesystemList::load).
// The loaders call order matters when dependent mod overrides resources in its dependencies.
std::vector <TModID> CModHandler::validateAndSortDependencies(std::vector <TModID> modsToResolve) const
{
// Topological sort algorithm.
// TODO: Investigate possible ways to improve performance.
boost::range::sort(modsToResolve); // Sort mods per name
std::vector <TModID> sortedValidMods; // Vector keeps order of elements (LIFO)
sortedValidMods.reserve(modsToResolve.size()); // push_back calls won't cause memory reallocation
std::set <TModID> resolvedModIDs; // Use a set for validation for performance reason, but set does not keep order of elements
// Mod is resolved if it has not dependencies or all its dependencies are already resolved
auto isResolved = [&](const CModInfo & mod) -> CModInfo::EValidationStatus
{
if(mod.dependencies.size() > resolvedModIDs.size())
return CModInfo::PENDING;
for(const TModID & dependency : mod.dependencies)
{
if(!vstd::contains(resolvedModIDs, dependency))
return CModInfo::PENDING;
}
return CModInfo::PASSED;
};
while(true)
{
std::set <TModID> resolvedOnCurrentTreeLevel;
for(auto it = modsToResolve.begin(); it != modsToResolve.end();) // One iteration - one level of mods tree
{
if(isResolved(allMods.at(*it)) == CModInfo::PASSED)
{
resolvedOnCurrentTreeLevel.insert(*it); // Not to the resolvedModIDs, so current node childs will be resolved on the next iteration
sortedValidMods.push_back(*it);
it = modsToResolve.erase(it);
continue;
}
it++;
}
if(resolvedOnCurrentTreeLevel.size())
{
resolvedModIDs.insert(resolvedOnCurrentTreeLevel.begin(), resolvedOnCurrentTreeLevel.end());
continue;
}
// If there're no valid mods on the current mods tree level, no more mod can be resolved, should be end.
break;
}
// Left mods have unresolved dependencies, output all to log.
for(const auto & brokenModID : modsToResolve)
{
const CModInfo & brokenMod = allMods.at(brokenModID);
for(const TModID & dependency : brokenMod.dependencies)
{
if(!vstd::contains(resolvedModIDs, dependency))
logMod->error("Mod '%s' will not work: it depends on mod '%s', which is not installed.", brokenMod.name, dependency);
}
}
return sortedValidMods;
}
std::vector<std::string> CModHandler::getModList(std::string path)
{
std::string modDir = boost::to_upper_copy(path + "MODS/");
size_t depth = boost::range::count(modDir, '/');
auto list = CResourceHandler::get("initial")->getFilteredFiles([&](const ResourceID & id) -> bool
{
if (id.getType() != EResType::DIRECTORY)
return false;
if (!boost::algorithm::starts_with(id.getName(), modDir))
return false;
if (boost::range::count(id.getName(), '/') != depth )
return false;
return true;
});
//storage for found mods
std::vector<std::string> foundMods;
for (auto & entry : list)
{
std::string name = entry.getName();
name.erase(0, modDir.size()); //Remove path prefix
if (!name.empty())
foundMods.push_back(name);
}
return foundMods;
}
void CModHandler::loadMods(std::string path, std::string parent, const JsonNode & modSettings, bool enableMods)
{
for(std::string modName : getModList(path))
loadOneMod(modName, parent, modSettings, enableMods);
}
void CModHandler::loadOneMod(std::string modName, std::string parent, const JsonNode & modSettings, bool enableMods)
{
boost::to_lower(modName);
std::string modFullName = parent.empty() ? modName : parent + '.' + modName;
if(CResourceHandler::get("initial")->existsResource(ResourceID(CModInfo::getModFile(modFullName))))
{
CModInfo mod(modFullName, modSettings[modName], JsonNode(ResourceID(CModInfo::getModFile(modFullName))));
if (!parent.empty()) // this is submod, add parent to dependencies
mod.dependencies.insert(parent);
allMods[modFullName] = mod;
if (mod.enabled && enableMods)
activeMods.push_back(modFullName);
loadMods(CModInfo::getModDir(modFullName) + '/', modFullName, modSettings[modName]["mods"], enableMods && mod.enabled);
}
}
void CModHandler::loadMods(bool onlyEssential)
{
JsonNode modConfig;
if(onlyEssential)
{
loadOneMod("vcmi", "", modConfig, true);//only vcmi and submods
}
else
{
modConfig = loadModSettings("config/modSettings.json");
loadMods("", "", modConfig["activeMods"], true);
}
coreMod = CModInfo("core", modConfig["core"], JsonNode(ResourceID("config/gameConfig.json")));
coreMod.name = "Original game files";
}
std::vector<std::string> CModHandler::getAllMods()
{
std::vector<std::string> modlist;
for (auto & entry : allMods)
modlist.push_back(entry.first);
return modlist;
}
std::vector<std::string> CModHandler::getActiveMods()
{
return activeMods;
}
static JsonNode genDefaultFS()
{
// default FS config for mods: directory "Content" that acts as H3 root directory
JsonNode defaultFS;
defaultFS[""].Vector().resize(2);
defaultFS[""].Vector()[0]["type"].String() = "zip";
defaultFS[""].Vector()[0]["path"].String() = "/Content.zip";
defaultFS[""].Vector()[1]["type"].String() = "dir";
defaultFS[""].Vector()[1]["path"].String() = "/Content";
return defaultFS;
}
static ISimpleResourceLoader * genModFilesystem(const std::string & modName, const JsonNode & conf)
{
static const JsonNode defaultFS = genDefaultFS();
if (!conf["filesystem"].isNull())
return CResourceHandler::createFileSystem(CModInfo::getModDir(modName), conf["filesystem"]);
else
return CResourceHandler::createFileSystem(CModInfo::getModDir(modName), defaultFS);
}
static ui32 calculateModChecksum(const std::string modName, ISimpleResourceLoader * filesystem)
{
boost::crc_32_type modChecksum;
// first - add current VCMI version into checksum to force re-validation on VCMI updates
modChecksum.process_bytes(reinterpret_cast<const void*>(GameConstants::VCMI_VERSION.data()), GameConstants::VCMI_VERSION.size());
// second - add mod.json into checksum because filesystem does not contains this file
// FIXME: remove workaround for core mod
if (modName != "core")
{
ResourceID modConfFile(CModInfo::getModFile(modName), EResType::TEXT);
ui32 configChecksum = CResourceHandler::get("initial")->load(modConfFile)->calculateCRC32();
modChecksum.process_bytes(reinterpret_cast<const void *>(&configChecksum), sizeof(configChecksum));
}
// third - add all detected text files from this mod into checksum
auto files = filesystem->getFilteredFiles([](const ResourceID & resID)
{
return resID.getType() == EResType::TEXT &&
( boost::starts_with(resID.getName(), "DATA") ||
boost::starts_with(resID.getName(), "CONFIG"));
});
for (const ResourceID & file : files)
{
ui32 fileChecksum = filesystem->load(file)->calculateCRC32();
modChecksum.process_bytes(reinterpret_cast<const void *>(&fileChecksum), sizeof(fileChecksum));
}
return modChecksum.checksum();
}
void CModHandler::loadModFilesystems()
{
activeMods = validateAndSortDependencies(activeMods);
coreMod.updateChecksum(calculateModChecksum("core", CResourceHandler::get("core")));
for(std::string & modName : activeMods)
{
CModInfo & mod = allMods[modName];
CResourceHandler::addFilesystem("data", modName, genModFilesystem(modName, mod.config));
}
}
std::set<TModID> CModHandler::getModDependencies(TModID modId, bool & isModFound)
{
auto it = allMods.find(modId);
isModFound = (it != allMods.end());
if(isModFound)
return it->second.dependencies;
logMod->error("Mod not found: '%s'", modId);
return std::set<TModID>();
}
void CModHandler::initializeConfig()
{
loadConfigFromFile("defaultMods.json");
}
void CModHandler::load()
{
CStopWatch totalTime, timer;
logMod->info("\tInitializing content handler: %d ms", timer.getDiff());
content->init();
for(const TModID & modName : activeMods)
{
logMod->trace("Generating checksum for %s", modName);
allMods[modName].updateChecksum(calculateModChecksum(modName, CResourceHandler::get(modName)));
}
// first - load virtual "core" mod that contains all data
// TODO? move all data into real mods? RoE, AB, SoD, WoG
content->preloadData(coreMod);
for(const TModID & modName : activeMods)
content->preloadData(allMods[modName]);
logMod->info("\tParsing mod data: %d ms", timer.getDiff());
content->load(coreMod);
for(const TModID & modName : activeMods)
content->load(allMods[modName]);
#if SCRIPTING_ENABLED
VLC->scriptHandler->performRegistration(VLC);//todo: this should be done before any other handlers load
#endif
content->loadCustom();
logMod->info("\tLoading mod data: %d ms", timer.getDiff());
VLC->creh->loadCrExpBon();
VLC->creh->buildBonusTreeForTiers(); //do that after all new creatures are loaded
identifiers.finalize();
logMod->info("\tResolving identifiers: %d ms", timer.getDiff());
content->afterLoadFinalization();
logMod->info("\tHandlers post-load finalization: %d ms ", timer.getDiff());
logMod->info("\tAll game content loaded in %d ms", totalTime.getDiff());
}
void CModHandler::afterLoad(bool onlyEssential)
{
JsonNode modSettings;
for (auto & modEntry : allMods)
{
std::string pointer = "/" + boost::algorithm::replace_all_copy(modEntry.first, ".", "/mods/");
modSettings["activeMods"].resolvePointer(pointer) = modEntry.second.saveLocalData();
}
modSettings["core"] = coreMod.saveLocalData();
if(!onlyEssential)
{
FileStream file(*CResourceHandler::get()->getResourceName(ResourceID("config/modSettings.json")), std::ofstream::out | std::ofstream::trunc);
file << modSettings.toJson();
}
}
std::string CModHandler::normalizeIdentifier(const std::string & scope, const std::string & remoteScope, const std::string & identifier)
{
auto p = vstd::splitStringToPair(identifier, ':');
if(p.first.empty())
p.first = scope;
if(p.first == remoteScope)
p.first.clear();
return p.first.empty() ? p.second : p.first + ":" + p.second;
}
void CModHandler::parseIdentifier(const std::string & fullIdentifier, std::string & scope, std::string & type, std::string & identifier)
{
auto p = vstd::splitStringToPair(fullIdentifier, ':');
scope = p.first;
auto p2 = vstd::splitStringToPair(p.second, '.');
if(p2.first != "")
{
type = p2.first;
identifier = p2.second;
}
else
{
type = p.second;
identifier.clear();
}
}
std::string CModHandler::makeFullIdentifier(const std::string & scope, const std::string & type, const std::string & identifier)
{
if(type.empty())
logGlobal->error("Full identifier (%s %s) requires type name", scope, identifier);
std::string actualScope = scope;
std::string actualName = identifier;
//ignore scope if identifier is scoped
auto scopeAndName = vstd::splitStringToPair(identifier, ':');
if(scopeAndName.first != "")
{
actualScope = scopeAndName.first;
actualName = scopeAndName.second;
}
if(actualScope.empty())
{
return actualName.empty() ? type : type + "." + actualName;
}
else
{
return actualName.empty() ? actualScope+ ":" + type : actualScope + ":" + type + "." + actualName;
}
}
VCMI_LIB_NAMESPACE_END
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