#include "pch.h" #include "keyvalues.h" #include "modmanager.h" #include "hooks.h" #include "filesystem.h" #include "hookutils.h" #include // hook forward defs typedef char (*KeyValues__LoadFromBufferType)( void* self, const char* resourceName, const char* pBuffer, void* pFileSystem, void* a5, void* a6, int a7); KeyValues__LoadFromBufferType KeyValues__LoadFromBuffer; char KeyValues__LoadFromBufferHook( void* self, const char* resourceName, const char* pBuffer, void* pFileSystem, void* a5, void* a6, int a7); ON_DLL_LOAD("engine.dll", KeyValues, (HMODULE baseAddress) { HookEnabler hook; ENABLER_CREATEHOOK( hook, (char*)baseAddress + 0x426C30, &KeyValues__LoadFromBufferHook, reinterpret_cast(&KeyValues__LoadFromBuffer)); }) char KeyValues__LoadFromBufferHook(void* self, const char* resourceName, const char* pBuffer, void* pFileSystem, void* a5, void* a6, int a7) { static void* pSavedFilesystemPtr = nullptr; // this is just to allow playlists to get a valid pFileSystem ptr for kv building, other functions that call this particular overload of // LoadFromBuffer seem to get called on network stuff exclusively not exactly sure what the address wanted here is, so just taking it // from a function call that always happens before playlists is loaded if (pFileSystem != nullptr) pSavedFilesystemPtr = pFileSystem; if (!pFileSystem && !strcmp(resourceName, "playlists")) pFileSystem = pSavedFilesystemPtr; return KeyValues__LoadFromBuffer(self, resourceName, pBuffer, pFileSystem, a5, a6, a7); } void ModManager::TryBuildKeyValues(const char* filename) { spdlog::info("Building KeyValues for file {}", filename); std::string normalisedPath = fs::path(filename).lexically_normal().string(); fs::path compiledPath = GetCompiledAssetsPath() / filename; fs::path compiledDir = compiledPath.parent_path(); fs::create_directories(compiledDir); fs::path kvPath(filename); std::string ogFilePath = "mod_original_"; ogFilePath += kvPath.filename().string(); std::string newKvs = "// AUTOGENERATED: MOD PATCH KV\n"; int patchNum = 0; // copy over patch kv files, and add #bases to new file, last mods' patches should be applied first // note: #include should be identical but it's actually just broken, thanks respawn for (int64_t i = m_loadedMods.size() - 1; i > -1; i--) { if (!m_loadedMods[i].Enabled) continue; size_t fileHash = STR_HASH(normalisedPath); auto modKv = m_loadedMods[i].KeyValues.find(fileHash); if (modKv != m_loadedMods[i].KeyValues.end()) { // should result in smth along the lines of #include "mod_patch_5_mp_weapon_car.txt" std::string patchFilePath = "mod_patch_"; patchFilePath += std::to_string(patchNum++); patchFilePath += "_"; patchFilePath += kvPath.filename().string(); newKvs += "#base \""; newKvs += patchFilePath; newKvs += "\"\n"; fs::remove(compiledDir / patchFilePath); fs::copy_file(m_loadedMods[i].ModDirectory / "keyvalues" / filename, compiledDir / patchFilePath); } } // add original #base last, #bases don't override preexisting keys, including the ones we've just done newKvs += "#base \""; newKvs += ogFilePath; newKvs += "\"\n"; // load original file, so we can parse out the name of the root obj (e.g. WeaponData for weapons) std::string originalFile = ReadVPKOriginalFile(filename); if (!originalFile.length()) { spdlog::warn("Tried to patch kv {} but no base kv was found!", ogFilePath); return; } char rootName[64]; memset(rootName, 0, sizeof(rootName)); rootName[63] = '\0'; // iterate until we hit an ascii char that isn't in a # command or comment to get root obj name int i = 0; while (!(originalFile[i] >= 65 && originalFile[i] <= 122)) { // if we hit a comment or # thing, iterate until end of line if (originalFile[i] == '/' || originalFile[i] == '#') while (originalFile[i] != '\n') i++; i++; } int j = 0; for (int j = 0; originalFile[i] >= 65 && originalFile[i] <= 122; j++) rootName[j] = originalFile[i++]; // empty kv, all the other stuff gets #base'd newKvs += rootName; newKvs += "\n{\n}\n"; std::ofstream originalFileWriteStream(compiledDir / ogFilePath, std::ios::binary); originalFileWriteStream << originalFile; originalFileWriteStream.close(); std::ofstream writeStream(compiledPath, std::ios::binary); writeStream << newKvs; writeStream.close(); ModOverrideFile overrideFile; overrideFile.owningMod = nullptr; overrideFile.path = normalisedPath; if (m_modFiles.find(normalisedPath) == m_modFiles.end()) m_modFiles.insert(std::make_pair(normalisedPath, overrideFile)); else m_modFiles[normalisedPath] = overrideFile; }