// Copyright (c) 2012- PPSSPP Project. // 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, version 2.0 or later versions. // 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 2.0 for more details. // A copy of the GPL 2.0 should have been included with the program. // If not, see http://www.gnu.org/licenses/ // Official git repository and contact information can be found at // https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/. #include #include #include "file/file_util.h" #include "Common/FileUtil.h" #include "Core/FileLoaders/CachingFileLoader.h" #include "Core/FileLoaders/DiskCachingFileLoader.h" #include "Core/FileLoaders/HTTPFileLoader.h" #include "Core/FileLoaders/LocalFileLoader.h" #include "Core/FileLoaders/RetryingFileLoader.h" #include "Core/FileSystems/MetaFileSystem.h" #include "Core/PSPLoaders.h" #include "Core/MemMap.h" #include "Core/Loaders.h" #include "Core/System.h" #include "Core/ELF/PBPReader.h" #include "Core/ELF/ParamSFO.h" FileLoader *ConstructFileLoader(const std::string &filename) { if (filename.find("http://") == 0 || filename.find("https://") == 0) return new CachingFileLoader(new DiskCachingFileLoader(new RetryingFileLoader(new HTTPFileLoader(filename)))); return new LocalFileLoader(filename); } // TODO : improve, look in the file more IdentifiedFileType Identify_File(FileLoader *fileLoader) { if (fileLoader == nullptr) { ERROR_LOG(LOADER, "Invalid fileLoader"); return FILETYPE_ERROR; } if (fileLoader->Path().size() == 0) { ERROR_LOG(LOADER, "Invalid filename %s", fileLoader->Path().c_str()); return FILETYPE_ERROR; } if (!fileLoader->Exists()) { return FILETYPE_ERROR; } std::string extension = fileLoader->Extension(); if (!strcasecmp(extension.c_str(), ".iso")) { // may be a psx iso, they have 2352 byte sectors. You never know what some people try to open if ((fileLoader->FileSize() % 2352) == 0) { unsigned char sync[12]; fileLoader->ReadAt(0, 12, sync); // each sector in a mode2 image starts with these 12 bytes if (memcmp(sync,"\x00\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\x00",12) == 0) { return FILETYPE_ISO_MODE2; } // maybe it also just happened to have that size, } return FILETYPE_PSP_ISO; } else if (!strcasecmp(extension.c_str(),".cso")) { return FILETYPE_PSP_ISO; } else if (!strcasecmp(extension.c_str(),".ppst")) { return FILETYPE_PPSSPP_SAVESTATE; } // First, check if it's a directory with an EBOOT.PBP in it. if (fileLoader->IsDirectory()) { std::string filename = fileLoader->Path(); if (filename.size() > 4) { // Check for existence of EBOOT.PBP, as required for "Directory games". if (File::Exists((filename + "/EBOOT.PBP").c_str())) { return FILETYPE_PSP_PBP_DIRECTORY; } // check if it's a disc directory if (File::Exists((filename + "/PSP_GAME").c_str())) { return FILETYPE_PSP_DISC_DIRECTORY; } // Not that, okay, let's guess it's a savedata directory if it has a param.sfo... if (File::Exists((filename + "/PARAM.SFO").c_str())) { return FILETYPE_PSP_SAVEDATA_DIRECTORY; } } return FILETYPE_NORMAL_DIRECTORY; } u32_le id; size_t readSize = fileLoader->ReadAt(0, 4, 1, &id); if (readSize != 1) { return FILETYPE_ERROR; } u32 psar_offset = 0, psar_id = 0; u32 _id = id; switch (_id) { case 'PBP\x00': fileLoader->ReadAt(0x24, 4, 1, &psar_offset); fileLoader->ReadAt(psar_offset, 4, 1, &psar_id); break; case '!raR': return FILETYPE_ARCHIVE_RAR; case '\x04\x03KP': case '\x06\x05KP': case '\x08\x07KP': return FILETYPE_ARCHIVE_ZIP; } if (id == 'FLE\x7F') { std::string filename = fileLoader->Path(); // There are a few elfs misnamed as pbp (like Trig Wars), accept that. if (!strcasecmp(extension.c_str(), ".plf") || strstr(filename.c_str(),"BOOT.BIN") || !strcasecmp(extension.c_str(), ".elf") || !strcasecmp(extension.c_str(), ".prx") || !strcasecmp(extension.c_str(), ".pbp")) { return FILETYPE_PSP_ELF; } return FILETYPE_UNKNOWN_ELF; } else if (id == 'PBP\x00') { // Do this PS1 eboot check FIRST before checking other eboot types. // It seems like some are malformed and slip through the PSAR check below. // TODO: Change PBPReader to read FileLoader objects? std::string filename = fileLoader->Path(); PBPReader pbp(filename.c_str()); if (pbp.IsValid() && !pbp.IsELF()) { std::vector sfoData; if (pbp.GetSubFile(PBP_PARAM_SFO, &sfoData)) { ParamSFOData paramSFO; paramSFO.ReadSFO(sfoData); // PS1 Eboots are supposed to use "ME" as their PARAM SFO category. // If they don't, and they're still malformed (e.g. PSISOIMG0000 isn't found), there's nothing we can do. if (paramSFO.GetValueString("CATEGORY") == "ME") return FILETYPE_PSP_PS1_PBP; } } if (psar_id == 'MUPN') { return FILETYPE_PSP_ISO_NP; } // PS1 PSAR begins with "PSISOIMG0000" if (psar_id == 'SISP') { return FILETYPE_PSP_PS1_PBP; } // Let's check if we got pointed to a PBP within such a directory. // If so we just move up and return the directory itself as the game. std::string path = File::GetDir(filename); // If loading from memstick... size_t pos = path.find("/PSP/GAME/"); if (pos != std::string::npos) { filename = path; return FILETYPE_PSP_PBP_DIRECTORY; } return FILETYPE_PSP_PBP; } else if (!strcasecmp(extension.c_str(),".pbp")) { ERROR_LOG(LOADER, "A PBP with the wrong magic number?"); return FILETYPE_PSP_PBP; } else if (!strcasecmp(extension.c_str(),".bin")) { return FILETYPE_UNKNOWN_BIN; } else if (!strcasecmp(extension.c_str(),".zip")) { return FILETYPE_ARCHIVE_ZIP; } else if (!strcasecmp(extension.c_str(),".rar")) { return FILETYPE_ARCHIVE_RAR; } else if (!strcasecmp(extension.c_str(),".r00")) { return FILETYPE_ARCHIVE_RAR; } else if (!strcasecmp(extension.c_str(),".r01")) { return FILETYPE_ARCHIVE_RAR; } else if (!strcasecmp(extension.substr(1).c_str(), ".7z")) { return FILETYPE_ARCHIVE_7Z; } return FILETYPE_UNKNOWN; } bool LoadFile(FileLoader **fileLoaderPtr, std::string *error_string) { FileLoader *&fileLoader = *fileLoaderPtr; // Note that this can modify filename! switch (Identify_File(fileLoader)) { case FILETYPE_PSP_PBP_DIRECTORY: { std::string filename = fileLoader->Path(); std::string ebootFilename = filename + "/EBOOT.PBP"; // Switch fileLoader to the EBOOT. delete fileLoader; fileLoader = ConstructFileLoader(ebootFilename); if (fileLoader->Exists()) { INFO_LOG(LOADER, "File is a PBP in a directory!"); IdentifiedFileType ebootType = Identify_File(fileLoader); if (ebootType == FILETYPE_PSP_ISO_NP) { InitMemoryForGameISO(fileLoader); pspFileSystem.SetStartingDirectory("disc0:/PSP_GAME/USRDIR"); return Load_PSP_ISO(fileLoader, error_string); } else if (ebootType == FILETYPE_PSP_PS1_PBP) { *error_string = "PS1 EBOOTs are not supported by PPSSPP."; return false; } std::string path = filename; size_t pos = path.find("/PSP/GAME/"); if (pos != std::string::npos) pspFileSystem.SetStartingDirectory("ms0:" + path.substr(pos)); return Load_PSP_ELF_PBP(fileLoader, error_string); } else { *error_string = "No EBOOT.PBP, misidentified game"; return false; } } case FILETYPE_PSP_PBP: case FILETYPE_PSP_ELF: { INFO_LOG(LOADER,"File is an ELF or loose PBP!"); return Load_PSP_ELF_PBP(fileLoader, error_string); } case FILETYPE_PSP_ISO: case FILETYPE_PSP_ISO_NP: case FILETYPE_PSP_DISC_DIRECTORY: // behaves the same as the mounting is already done by now pspFileSystem.SetStartingDirectory("disc0:/PSP_GAME/USRDIR"); return Load_PSP_ISO(fileLoader, error_string); case FILETYPE_PSP_PS1_PBP: *error_string = "PS1 EBOOTs are not supported by PPSSPP."; break; case FILETYPE_ERROR: ERROR_LOG(LOADER, "Could not read file"); *error_string = "Error reading file"; break; case FILETYPE_ARCHIVE_RAR: #ifdef WIN32 *error_string = "RAR file detected (Require WINRAR)"; #else *error_string = "RAR file detected (Require UnRAR)"; #endif break; case FILETYPE_ARCHIVE_ZIP: #ifdef WIN32 *error_string = "ZIP file detected (Require WINRAR)"; #else *error_string = "ZIP file detected (Require UnRAR)"; #endif break; case FILETYPE_ARCHIVE_7Z: #ifdef WIN32 *error_string = "7z file detected (Require 7-Zip)"; #else *error_string = "7z file detected (Require 7-Zip)"; #endif break; case FILETYPE_ISO_MODE2: *error_string = "PSX game image detected."; break; case FILETYPE_NORMAL_DIRECTORY: ERROR_LOG(LOADER, "Just a directory."); *error_string = "Just a directory."; break; case FILETYPE_PPSSPP_SAVESTATE: *error_string = "This is a saved state, not a game."; // Actually, we could make it load it... break; case FILETYPE_PSP_SAVEDATA_DIRECTORY: *error_string = "This is save data, not a game."; // Actually, we could make it load it... break; case FILETYPE_UNKNOWN_BIN: case FILETYPE_UNKNOWN_ELF: case FILETYPE_UNKNOWN: default: ERROR_LOG(LOADER, "Failed to identify file"); *error_string = "Failed to identify file"; break; } return false; }