ref: f2b49015d54806681e98eb7b7f19ae7001d58011
dir: /src/d_iwad.c/
// // Copyright(C) 2005-2014 Simon Howard // // 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. // // DESCRIPTION: // Search for and locate an IWAD file, and initialize according // to the IWAD type. // #include <stdio.h> #include <stdlib.h> #include <ctype.h> #include <string.h> #include "deh_str.h" #include "doomkeys.h" #include "d_iwad.h" #include "i_system.h" #include "m_argv.h" #include "m_config.h" #include "m_misc.h" #include "w_wad.h" #include "z_zone.h" static const iwad_t iwads[] = { { "doom2.wad", doom2, commercial, "Doom II" }, { "plutonia.wad", pack_plut, commercial, "Final Doom: Plutonia Experiment" }, { "tnt.wad", pack_tnt, commercial, "Final Doom: TNT: Evilution" }, { "doom.wad", doom, retail, "Doom" }, { "doom1.wad", doom, shareware, "Doom Shareware" }, { "chex.wad", pack_chex, retail, "Chex Quest" }, { "hacx.wad", pack_hacx, commercial, "Hacx" }, { "freedm.wad", doom2, commercial, "FreeDM" }, { "freedoom2.wad", doom2, commercial, "Freedoom: Phase 2" }, { "freedoom1.wad", doom, retail, "Freedoom: Phase 1" }, { "heretic.wad", heretic, retail, "Heretic" }, { "heretic1.wad", heretic, shareware, "Heretic Shareware" }, { "hexen.wad", hexen, commercial, "Hexen" }, //{ "strife0.wad", strife, commercial, "Strife" }, // haleyjd: STRIFE-FIXME { "strife1.wad", strife, commercial, "Strife" }, }; // Array of locations to search for IWAD files // // "128 IWAD search directories should be enough for anybody". #define MAX_IWAD_DIRS 128 static boolean iwad_dirs_built = false; static char *iwad_dirs[MAX_IWAD_DIRS]; static int num_iwad_dirs = 0; static void AddIWADDir(char *dir) { if (num_iwad_dirs < MAX_IWAD_DIRS) { iwad_dirs[num_iwad_dirs] = dir; ++num_iwad_dirs; } } // This is Windows-specific code that automatically finds the location // of installed IWAD files. The registry is inspected to find special // keys installed by the Windows installers for various CD versions // of Doom. From these keys we can deduce where to find an IWAD. #if defined(_WIN32) && !defined(_WIN32_WCE) #define WIN32_LEAN_AND_MEAN #include <windows.h> typedef struct { HKEY root; char *path; char *value; } registry_value_t; #define UNINSTALLER_STRING "\\uninstl.exe /S " // Keys installed by the various CD editions. These are actually the // commands to invoke the uninstaller and look like this: // // C:\Program Files\Path\uninstl.exe /S C:\Program Files\Path // // With some munging we can find where Doom was installed. // [AlexMax] From the persepctive of a 64-bit executable, 32-bit registry // keys are located in a different spot. #if _WIN64 #define SOFTWARE_KEY "Software\\Wow6432Node" #else #define SOFTWARE_KEY "Software" #endif static registry_value_t uninstall_values[] = { // Ultimate Doom, CD version (Depths of Doom trilogy) { HKEY_LOCAL_MACHINE, SOFTWARE_KEY "\\Microsoft\\Windows\\CurrentVersion\\" "Uninstall\\Ultimate Doom for Windows 95", "UninstallString", }, // Doom II, CD version (Depths of Doom trilogy) { HKEY_LOCAL_MACHINE, SOFTWARE_KEY "\\Microsoft\\Windows\\CurrentVersion\\" "Uninstall\\Doom II for Windows 95", "UninstallString", }, // Final Doom { HKEY_LOCAL_MACHINE, SOFTWARE_KEY "\\Microsoft\\Windows\\CurrentVersion\\" "Uninstall\\Final Doom for Windows 95", "UninstallString", }, // Shareware version { HKEY_LOCAL_MACHINE, SOFTWARE_KEY "\\Microsoft\\Windows\\CurrentVersion\\" "Uninstall\\Doom Shareware for Windows 95", "UninstallString", }, }; // Values installed by the GOG.com and Collector's Edition versions static registry_value_t root_path_keys[] = { // Doom Collector's Edition { HKEY_LOCAL_MACHINE, SOFTWARE_KEY "\\Activision\\DOOM Collector's Edition\\v1.0", "INSTALLPATH", }, // Doom II { HKEY_LOCAL_MACHINE, SOFTWARE_KEY "\\GOG.com\\Games\\1435848814", "PATH", }, // Doom 3: BFG Edition { HKEY_LOCAL_MACHINE, SOFTWARE_KEY "\\GOG.com\\Games\\1135892318", "PATH", }, // Final Doom { HKEY_LOCAL_MACHINE, SOFTWARE_KEY "\\GOG.com\\Games\\1435848742", "PATH", }, // Ultimate Doom { HKEY_LOCAL_MACHINE, SOFTWARE_KEY "\\GOG.com\\Games\\1435827232", "PATH", }, // Strife: Veteran Edition { HKEY_LOCAL_MACHINE, SOFTWARE_KEY "\\GOG.com\\Games\\1432899949", "PATH", }, }; // Subdirectories of the above install path, where IWADs are installed. static char *root_path_subdirs[] = { ".", "Doom2", "Final Doom", "Ultimate Doom", "Plutonia", "TNT", "base\\wads", }; // Location where Steam is installed static registry_value_t steam_install_location = { HKEY_LOCAL_MACHINE, SOFTWARE_KEY "\\Valve\\Steam", "InstallPath", }; // Subdirs of the steam install directory where IWADs are found static char *steam_install_subdirs[] = { "steamapps\\common\\doom 2\\base", "steamapps\\common\\final doom\\base", "steamapps\\common\\ultimate doom\\base", "steamapps\\common\\heretic shadow of the serpent riders\\base", "steamapps\\common\\hexen\\base", "steamapps\\common\\hexen deathkings of the dark citadel\\base", // From Doom 3: BFG Edition: "steamapps\\common\\DOOM 3 BFG Edition\\base\\wads", // From Strife: Veteran Edition: "steamapps\\common\\Strife", }; #define STEAM_BFG_GUS_PATCHES \ "steamapps\\common\\DOOM 3 BFG Edition\\base\\classicmusic\\instruments" static char *GetRegistryString(registry_value_t *reg_val) { HKEY key; DWORD len; DWORD valtype; char *result; // Open the key (directory where the value is stored) if (RegOpenKeyEx(reg_val->root, reg_val->path, 0, KEY_READ, &key) != ERROR_SUCCESS) { return NULL; } result = NULL; // Find the type and length of the string, and only accept strings. if (RegQueryValueEx(key, reg_val->value, NULL, &valtype, NULL, &len) == ERROR_SUCCESS && valtype == REG_SZ) { // Allocate a buffer for the value and read the value result = malloc(len + 1); if (RegQueryValueEx(key, reg_val->value, NULL, &valtype, (unsigned char *) result, &len) != ERROR_SUCCESS) { free(result); result = NULL; } else { // Ensure the value is null-terminated result[len] = '\0'; } } // Close the key RegCloseKey(key); return result; } // Check for the uninstall strings from the CD versions static void CheckUninstallStrings(void) { unsigned int i; for (i=0; i<arrlen(uninstall_values); ++i) { char *val; char *path; char *unstr; val = GetRegistryString(&uninstall_values[i]); if (val == NULL) { continue; } unstr = strstr(val, UNINSTALLER_STRING); if (unstr == NULL) { free(val); } else { path = unstr + strlen(UNINSTALLER_STRING); AddIWADDir(path); } } } // Check for GOG.com and Doom: Collector's Edition static void CheckInstallRootPaths(void) { unsigned int i; for (i=0; i<arrlen(root_path_keys); ++i) { char *install_path; char *subpath; unsigned int j; install_path = GetRegistryString(&root_path_keys[i]); if (install_path == NULL) { continue; } for (j=0; j<arrlen(root_path_subdirs); ++j) { subpath = M_StringJoin(install_path, DIR_SEPARATOR_S, root_path_subdirs[j], NULL); AddIWADDir(subpath); } free(install_path); } } // Check for Doom downloaded via Steam static void CheckSteamEdition(void) { char *install_path; char *subpath; size_t i; install_path = GetRegistryString(&steam_install_location); if (install_path == NULL) { return; } for (i=0; i<arrlen(steam_install_subdirs); ++i) { subpath = M_StringJoin(install_path, DIR_SEPARATOR_S, steam_install_subdirs[i], NULL); AddIWADDir(subpath); } free(install_path); } // The BFG edition ships with a full set of GUS patches. If we find them, // we can autoconfigure to use them. static void CheckSteamGUSPatches(void) { const char *current_path; char *install_path; char *patch_path; int len; // Already configured? Don't stomp on the user's choices. current_path = M_GetStringVariable("gus_patch_path"); if (current_path != NULL && strlen(current_path) > 0) { return; } install_path = GetRegistryString(&steam_install_location); if (install_path == NULL) { return; } len = strlen(install_path) + strlen(STEAM_BFG_GUS_PATCHES) + 20; patch_path = malloc(len); M_snprintf(patch_path, len, "%s\\%s\\ACBASS.PAT", install_path, STEAM_BFG_GUS_PATCHES); // Does acbass.pat exist? If so, then set gus_patch_path. if (M_FileExists(patch_path)) { M_snprintf(patch_path, len, "%s\\%s", install_path, STEAM_BFG_GUS_PATCHES); M_SetVariable("gus_patch_path", patch_path); } free(patch_path); free(install_path); } // Default install directories for DOS Doom static void CheckDOSDefaults(void) { // These are the default install directories used by the deice // installer program: AddIWADDir("\\doom2"); // Doom II AddIWADDir("\\plutonia"); // Final Doom AddIWADDir("\\tnt"); AddIWADDir("\\doom_se"); // Ultimate Doom AddIWADDir("\\doom"); // Shareware / Registered Doom AddIWADDir("\\dooms"); // Shareware versions AddIWADDir("\\doomsw"); AddIWADDir("\\heretic"); // Heretic AddIWADDir("\\hrtic_se"); // Heretic Shareware from Quake disc AddIWADDir("\\hexen"); // Hexen AddIWADDir("\\hexendk"); // Hexen Deathkings of the Dark Citadel AddIWADDir("\\strife"); // Strife } #endif // Returns true if the specified path is a path to a file // of the specified name. static boolean DirIsFile(const char *path, const char *filename) { size_t path_len; size_t filename_len; path_len = strlen(path); filename_len = strlen(filename); return path_len >= filename_len + 1 && path[path_len - filename_len - 1] == DIR_SEPARATOR && !strcasecmp(&path[path_len - filename_len], filename); } // Check if the specified directory contains the specified IWAD // file, returning the full path to the IWAD if found, or NULL // if not found. static char *CheckDirectoryHasIWAD(char *dir, char *iwadname) { char *filename; char *probe; // As a special case, the "directory" may refer directly to an // IWAD file if the path comes from DOOMWADDIR or DOOMWADPATH. probe = M_FileCaseExists(dir); if (DirIsFile(dir, iwadname) && probe != NULL) { return probe; } // Construct the full path to the IWAD if it is located in // this directory, and check if it exists. if (!strcmp(dir, ".")) { filename = M_StringDuplicate(iwadname); } else { filename = M_StringJoin(dir, DIR_SEPARATOR_S, iwadname, NULL); } probe = M_FileCaseExists(filename); if (probe != NULL) { return probe; } free(filename); return NULL; } // Search a directory to try to find an IWAD // Returns the location of the IWAD if found, otherwise NULL. static char *SearchDirectoryForIWAD(char *dir, int mask, GameMission_t *mission) { char *filename; size_t i; for (i=0; i<arrlen(iwads); ++i) { if (((1 << iwads[i].mission) & mask) == 0) { continue; } filename = CheckDirectoryHasIWAD(dir, DEH_String(iwads[i].name)); if (filename != NULL) { *mission = iwads[i].mission; return filename; } } return NULL; } // When given an IWAD with the '-iwad' parameter, // attempt to identify it by its name. static GameMission_t IdentifyIWADByName(char *name, int mask) { size_t i; GameMission_t mission; char *p; p = strrchr(name, DIR_SEPARATOR); if (p != NULL) { name = p + 1; } mission = none; for (i=0; i<arrlen(iwads); ++i) { // Check if the filename is this IWAD name. // Only use supported missions: if (((1 << iwads[i].mission) & mask) == 0) continue; // Check if it ends in this IWAD name. if (!strcasecmp(name, iwads[i].name)) { mission = iwads[i].mission; break; } } return mission; } // Add IWAD directories parsed from splitting a path string containing // paths separated by PATH_SEPARATOR. 'suffix' is a string to concatenate // to the end of the paths before adding them. static void AddIWADPath(char *path, char *suffix) { char *left, *p; path = M_StringDuplicate(path); // Split into individual dirs within the list. left = path; for (;;) { p = strchr(left, PATH_SEPARATOR); if (p != NULL) { // Break at the separator and use the left hand side // as another iwad dir *p = '\0'; AddIWADDir(M_StringJoin(left, suffix, NULL)); left = p + 1; } else { break; } } AddIWADDir(M_StringJoin(left, suffix, NULL)); free(path); } #ifndef _WIN32 // Add standard directories where IWADs are located on Unix systems. // To respect the freedesktop.org specification we support overriding // using standard environment variables. See the XDG Base Directory // Specification: // <http://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html> static void AddXdgDirs(void) { char *env, *tmp_env; // Quote: // > $XDG_DATA_HOME defines the base directory relative to which // > user specific data files should be stored. If $XDG_DATA_HOME // > is either not set or empty, a default equal to // > $HOME/.local/share should be used. env = getenv("XDG_DATA_HOME"); tmp_env = NULL; if (env == NULL) { char *homedir = getenv("HOME"); if (homedir == NULL) { homedir = "/"; } tmp_env = M_StringJoin(homedir, "/.local/share", NULL); env = tmp_env; } // We support $XDG_DATA_HOME/games/doom (which will usually be // ~/.local/share/games/doom) as a user-writeable extension to // the usual /usr/share/games/doom location. AddIWADDir(M_StringJoin(env, "/games/doom", NULL)); free(tmp_env); // Quote: // > $XDG_DATA_DIRS defines the preference-ordered set of base // > directories to search for data files in addition to the // > $XDG_DATA_HOME base directory. The directories in $XDG_DATA_DIRS // > should be seperated with a colon ':'. // > // > If $XDG_DATA_DIRS is either not set or empty, a value equal to // > /usr/local/share/:/usr/share/ should be used. env = getenv("XDG_DATA_DIRS"); if (env == NULL) { // (Trailing / omitted from paths, as it is added below) env = "/usr/local/share:/usr/share"; } // The "standard" location for IWADs on Unix that is supported by most // source ports is /usr/share/games/doom - we support this through the // XDG_DATA_DIRS mechanism, through which it can be overridden. AddIWADPath(env, "/games/doom"); // The convention set by RBDOOM-3-BFG is to install Doom 3: BFG // Edition into this directory, under which includes the Doom // Classic WADs. AddIWADPath(env, "/games/doom3bfg/base/wads"); } #endif // // Build a list of IWAD files // static void BuildIWADDirList(void) { char *env; if (iwad_dirs_built) { return; } // Look in the current directory. Doom always does this. AddIWADDir("."); // Add DOOMWADDIR if it is in the environment env = getenv("DOOMWADDIR"); if (env != NULL) { AddIWADDir(env); } // Add dirs from DOOMWADPATH: env = getenv("DOOMWADPATH"); if (env != NULL) { AddIWADPath(env, ""); } #ifdef _WIN32 // Search the registry and find where IWADs have been installed. CheckUninstallStrings(); CheckInstallRootPaths(); CheckSteamEdition(); CheckDOSDefaults(); // Check for GUS patches installed with the BFG edition! CheckSteamGUSPatches(); #else AddXdgDirs(); #endif // Don't run this function again. iwad_dirs_built = true; } // // Searches WAD search paths for an WAD with a specific filename. // char *D_FindWADByName(const char *name) { char *path; char *probe; int i; // Absolute path? probe = M_FileCaseExists(name); if (probe != NULL) { return probe; } BuildIWADDirList(); // Search through all IWAD paths for a file with the given name. for (i=0; i<num_iwad_dirs; ++i) { // As a special case, if this is in DOOMWADDIR or DOOMWADPATH, // the "directory" may actually refer directly to an IWAD // file. probe = M_FileCaseExists(iwad_dirs[i]); if (DirIsFile(iwad_dirs[i], name) && probe != NULL) { return probe; } // Construct a string for the full path path = M_StringJoin(iwad_dirs[i], DIR_SEPARATOR_S, name, NULL); probe = M_FileCaseExists(path); if (probe != NULL) { return probe; } free(path); } // File not found return NULL; } // // D_TryWADByName // // Searches for a WAD by its filename, or passes through the filename // if not found. // char *D_TryFindWADByName(char *filename) { char *result; result = D_FindWADByName(filename); if (result != NULL) { return result; } else { return filename; } } // // FindIWAD // Checks availability of IWAD files by name, // to determine whether registered/commercial features // should be executed (notably loading PWADs). // char *D_FindIWAD(int mask, GameMission_t *mission) { char *result; char *iwadfile; int iwadparm; int i; // Check for the -iwad parameter //! // Specify an IWAD file to use. // // @arg <file> // iwadparm = M_CheckParmWithArgs("-iwad", 1); if (iwadparm) { // Search through IWAD dirs for an IWAD with the given name. iwadfile = myargv[iwadparm + 1]; result = D_FindWADByName(iwadfile); if (result == NULL) { I_Error("IWAD file '%s' not found!", iwadfile); } *mission = IdentifyIWADByName(result, mask); } else { // Search through the list and look for an IWAD result = NULL; BuildIWADDirList(); for (i=0; result == NULL && i<num_iwad_dirs; ++i) { result = SearchDirectoryForIWAD(iwad_dirs[i], mask, mission); } } return result; } // Find all IWADs in the IWAD search path matching the given mask. const iwad_t **D_FindAllIWADs(int mask) { const iwad_t **result; int result_len; char *filename; int i; result = malloc(sizeof(iwad_t *) * (arrlen(iwads) + 1)); result_len = 0; // Try to find all IWADs for (i=0; i<arrlen(iwads); ++i) { if (((1 << iwads[i].mission) & mask) == 0) { continue; } filename = D_FindWADByName(iwads[i].name); if (filename != NULL) { result[result_len] = &iwads[i]; ++result_len; } } // End of list result[result_len] = NULL; return result; } // // Get the IWAD name used for savegames. // char *D_SaveGameIWADName(GameMission_t gamemission) { size_t i; // Determine the IWAD name to use for savegames. // This determines the directory the savegame files get put into. // // Note that we match on gamemission rather than on IWAD name. // This ensures that doom1.wad and doom.wad saves are stored // in the same place. for (i=0; i<arrlen(iwads); ++i) { if (gamemission == iwads[i].mission) { return iwads[i].name; } } // Default fallback: return "unknown.wad"; } char *D_SuggestIWADName(GameMission_t mission, GameMode_t mode) { int i; for (i = 0; i < arrlen(iwads); ++i) { if (iwads[i].mission == mission && iwads[i].mode == mode) { return iwads[i].name; } } return "unknown.wad"; } char *D_SuggestGameName(GameMission_t mission, GameMode_t mode) { int i; for (i = 0; i < arrlen(iwads); ++i) { if (iwads[i].mission == mission && (mode == indetermined || iwads[i].mode == mode)) { return iwads[i].description; } } return "Unknown game?"; }