// SONIC ROBO BLAST 2 //----------------------------------------------------------------------------- // Copyright (C) 1993-1996 by id Software, Inc. // Copyright (C) 1998-2000 by DooM Legacy Team. // Copyright (C) 1999-2018 by Sonic Team Junior. // // This program is free software distributed under the // terms of the GNU General Public License, version 2. // See the 'LICENSE' file for more details. //----------------------------------------------------------------------------- /// \file w_wad.c /// \brief Handles WAD file header, directory, lump I/O #ifdef __GNUC__ #include #endif #define ZWAD #ifdef ZWAD #include #include "lzf.h" #endif #ifndef _FILE_OFFSET_BITS #define _FILE_OFFSET_BITS 0 #endif #ifndef _LARGEFILE64_SOURCE #define _LARGEFILE64_SOURCE #endif #ifndef _LFS64_LARGEFILE #define _LFS64_LARGEFILE #endif //#ifdef HAVE_ZLIB #include "zlib.h" //#endif // HAVE_ZLIB #include "doomdef.h" #include "doomstat.h" #include "doomtype.h" #include "w_wad.h" #include "z_zone.h" #include "fastcmp.h" #include "filesrch.h" #include "i_video.h" // rendermode #include "d_netfil.h" #include "dehacked.h" #include "d_clisrv.h" #include "r_defs.h" #include "i_system.h" #include "md5.h" #include "lua_script.h" #ifdef SCANTHINGS #include "p_setup.h" // P_ScanThings #endif #include "m_misc.h" // M_MapNumber #ifdef HWRENDER #include "r_data.h" #include "hardware/hw_main.h" #include "hardware/hw_glob.h" #endif #ifdef PC_DOS #include // for snprintf int snprintf(char *str, size_t n, const char *fmt, ...); //int vsnprintf(char *str, size_t n, const char *fmt, va_list ap); #endif #ifndef O_BINARY #define O_BINARY 0 #endif #ifdef HAVE_ZLIB #ifndef _MSC_VER #ifndef _LARGEFILE64_SOURCE #define _LARGEFILE64_SOURCE #endif #endif #ifndef _LFS64_LARGEFILE #define _LFS64_LARGEFILE #endif #ifndef _FILE_OFFSET_BITS #define _FILE_OFFSET_BITS 0 #endif #include "zlib.h" #endif typedef struct { const char *name; size_t len; } lumpchecklist_t; // Must be a power of two #define LUMPNUMCACHESIZE 64 typedef struct lumpnum_cache_s { char lumpname[8]; lumpnum_t lumpnum; } lumpnum_cache_t; static lumpnum_cache_t lumpnumcache[LUMPNUMCACHESIZE]; static UINT16 lumpnumcacheindex = 0; //=========================================================================== // GLOBALS //=========================================================================== UINT16 numwadfiles; // number of active wadfiles wadfile_t *wadfiles[MAX_WADFILES]; // 0 to numwadfiles-1 are valid // W_Shutdown // Closes all of the WAD files before quitting // If not done on a Mac then open wad files // can prevent removable media they are on from // being ejected void W_Shutdown(void) { while (numwadfiles--) { fclose(wadfiles[numwadfiles]->handle); Z_Free(wadfiles[numwadfiles]->filename); while (wadfiles[numwadfiles]->numlumps--) Z_Free(wadfiles[numwadfiles]->lumpinfo[wadfiles[numwadfiles]->numlumps].name2); Z_Free(wadfiles[numwadfiles]->lumpinfo); Z_Free(wadfiles[numwadfiles]); } } //=========================================================================== // LUMP BASED ROUTINES //=========================================================================== // W_AddFile // All files are optional, but at least one file must be // found (PWAD, if all required lumps are present). // Files with a .wad extension are wadlink files // with multiple lumps. // Other files are single lumps with the base filename // for the lump name. static char filenamebuf[MAX_WADPATH]; // W_OpenWadFile // Helper function for opening the WAD file. // Returns the FILE * handle for the file, or NULL if not found or could not be opened // If "useerrors" is true then print errors in the console, else just don't bother // "filename" may be modified to have the correct path the actual file is located in, if necessary FILE *W_OpenWadFile(const char **filename, boolean useerrors) { FILE *handle; // Officially, strncpy should not have overlapping buffers, since W_VerifyNMUSlumps is called after this, and it // changes filename to point at filenamebuf, it would technically be doing that. I doubt any issue will occur since // they point to the same location, but it's better to be safe and this is a simple change. if (filenamebuf != *filename) { strncpy(filenamebuf, *filename, MAX_WADPATH); filenamebuf[MAX_WADPATH - 1] = '\0'; *filename = filenamebuf; } // open wad file if ((handle = fopen(*filename, "rb")) == NULL) { // If we failed to load the file with the path as specified by // the user, strip the directories and search for the file. nameonly(filenamebuf); // If findfile finds the file, the full path will be returned // in filenamebuf == *filename. if (findfile(filenamebuf, NULL, true)) { if ((handle = fopen(*filename, "rb")) == NULL) { if (useerrors) CONS_Alert(CONS_ERROR, M_GetText("Can't open %s\n"), *filename); return NULL; } } else { if (useerrors) CONS_Alert(CONS_ERROR, M_GetText("File %s not found.\n"), *filename); return NULL; } } return handle; } // Look for all DEHACKED and Lua scripts inside a PK3 archive. static inline void W_LoadDehackedLumpsPK3(UINT16 wadnum, boolean mainfile) { UINT16 posStart, posEnd; #ifdef HAVE_BLUA posStart = W_CheckNumForFolderStartPK3("Lua/", wadnum, 0); if (posStart != INT16_MAX) { posEnd = W_CheckNumForFolderEndPK3("Lua/", wadnum, posStart); posStart++; // first "lump" will be "Lua/" folder itself, so ignore it for (; posStart < posEnd; posStart++) LUA_LoadLump(wadnum, posStart); } #endif posStart = W_CheckNumForFolderStartPK3("SOC/", wadnum, 0); if (posStart != INT16_MAX) { posEnd = W_CheckNumForFolderEndPK3("SOC/", wadnum, posStart); posStart++; // first "lump" will be "SOC/" folder itself, so ignore it for(; posStart < posEnd; posStart++) { lumpinfo_t *lump_p = &wadfiles[wadnum]->lumpinfo[posStart]; size_t length = strlen(wadfiles[wadnum]->filename) + 1 + strlen(lump_p->name2); // length of file name, '|', and lump name char *name = malloc(length + 1); sprintf(name, "%s|%s", wadfiles[wadnum]->filename, lump_p->name2); name[length] = '\0'; CONS_Printf(M_GetText("Loading SOC from %s\n"), name); DEH_LoadDehackedLumpPwad(wadnum, posStart, mainfile); free(name); } } } // search for all DEHACKED lump in all wads and load it static inline void W_LoadDehackedLumps(UINT16 wadnum, boolean mainfile) { UINT16 lump; #ifdef HAVE_BLUA // Find Lua scripts before SOCs to allow new A_Actions in SOC editing. { lumpinfo_t *lump_p = wadfiles[wadnum]->lumpinfo; for (lump = 0; lump < wadfiles[wadnum]->numlumps; lump++, lump_p++) if (memcmp(lump_p->name,"LUA_",4)==0) LUA_LoadLump(wadnum, lump); } #endif { lumpinfo_t *lump_p = wadfiles[wadnum]->lumpinfo; for (lump = 0; lump < wadfiles[wadnum]->numlumps; lump++, lump_p++) if (memcmp(lump_p->name,"SOC_",4)==0) // Check for generic SOC lump { // shameless copy+paste of code from LUA_LoadLump size_t length = strlen(wadfiles[wadnum]->filename) + 1 + strlen(lump_p->name2); // length of file name, '|', and lump name char *name = malloc(length + 1); sprintf(name, "%s|%s", wadfiles[wadnum]->filename, lump_p->name2); name[length] = '\0'; CONS_Printf(M_GetText("Loading SOC from %s\n"), name); DEH_LoadDehackedLumpPwad(wadnum, lump, mainfile); free(name); } else if (memcmp(lump_p->name,"MAINCFG",8)==0) // Check for MAINCFG { CONS_Printf(M_GetText("Loading main config from %s\n"), wadfiles[wadnum]->filename); DEH_LoadDehackedLumpPwad(wadnum, lump, mainfile); } else if (memcmp(lump_p->name,"OBJCTCFG",8)==0) // Check for OBJCTCFG { CONS_Printf(M_GetText("Loading object config from %s\n"), wadfiles[wadnum]->filename); DEH_LoadDehackedLumpPwad(wadnum, lump, mainfile); } } #ifdef SCANTHINGS // Scan maps for emblems 'n shit { lumpinfo_t *lump_p = wadfiles[wadnum]->lumpinfo; for (lump = 0; lump < wadfiles[wadnum]->numlumps; lump++, lump_p++) { const char *name = lump_p->name; if (name[0] == 'M' && name[1] == 'A' && name[2] == 'P' && name[5]=='\0') { INT16 mapnum = (INT16)M_MapNumber(name[3], name[4]); P_ScanThings(mapnum, wadnum, lump + ML_THINGS); } } } #endif } /** Compute MD5 message digest for bytes read from STREAM of this filname. * * The resulting message digest number will be written into the 16 bytes * beginning at RESBLOCK. * * \param filename path of file * \param resblock resulting MD5 checksum * \return 0 if MD5 checksum was made, and is at resblock, 1 if error was found */ static inline INT32 W_MakeFileMD5(const char *filename, void *resblock) { #ifdef NOMD5 (void)filename; memset(resblock, 0x00, 16); #else FILE *fhandle; if ((fhandle = fopen(filename, "rb")) != NULL) { tic_t t = I_GetTime(); CONS_Debug(DBG_SETUP, "Making MD5 for %s\n",filename); if (md5_stream(fhandle, resblock) == 1) { fclose(fhandle); return 1; } CONS_Debug(DBG_SETUP, "MD5 calc for %s took %f seconds\n", filename, (float)(I_GetTime() - t)/NEWTICRATE); fclose(fhandle); return 0; } #endif return 1; } // Invalidates the cache of lump numbers. Call this whenever a wad is added. static void W_InvalidateLumpnumCache(void) { memset(lumpnumcache, 0, sizeof (lumpnumcache)); } /** Detect a file type. * \todo Actually detect the wad/pkzip headers and whatnot, instead of just checking the extensions. */ static restype_t ResourceFileDetect (const char* filename) { if (!stricmp(&filename[strlen(filename) - 4], ".pk3")) return RET_PK3; if (!stricmp(&filename[strlen(filename) - 4], ".soc")) return RET_SOC; if (!stricmp(&filename[strlen(filename) - 4], ".lua")) return RET_LUA; return RET_WAD; } /** Create a 1-lump lumpinfo_t for standalone files. */ static lumpinfo_t* ResGetLumpsStandalone (FILE* handle, UINT16* numlumps, const char* lumpname) { lumpinfo_t* lumpinfo = Z_Calloc(sizeof (*lumpinfo), PU_STATIC, NULL); lumpinfo->position = 0; fseek(handle, 0, SEEK_END); lumpinfo->size = ftell(handle); fseek(handle, 0, SEEK_SET); strcpy(lumpinfo->name, lumpname); // Allocate the lump's full name. lumpinfo->name2 = Z_Malloc(9 * sizeof(char), PU_STATIC, NULL); strcpy(lumpinfo->name2, lumpname); lumpinfo->name2[8] = '\0'; *numlumps = 1; return lumpinfo; } /** Create a lumpinfo_t array for a WAD file. */ static lumpinfo_t* ResGetLumpsWad (FILE* handle, UINT16* nlmp, const char* filename) { UINT16 numlumps = *nlmp; lumpinfo_t* lumpinfo; size_t i; INT32 compressed = 0; wadinfo_t header; lumpinfo_t *lump_p; filelump_t *fileinfo; void *fileinfov; // read the header if (fread(&header, 1, sizeof header, handle) < sizeof header) { CONS_Alert(CONS_ERROR, M_GetText("Can't read wad header because %s\n"), strerror(ferror(handle))); return NULL; } if (memcmp(header.identification, "ZWAD", 4) == 0) compressed = 1; else if (memcmp(header.identification, "IWAD", 4) != 0 && memcmp(header.identification, "PWAD", 4) != 0 && memcmp(header.identification, "SDLL", 4) != 0) { CONS_Alert(CONS_ERROR, M_GetText("Invalid WAD header\n")); return NULL; } header.numlumps = LONG(header.numlumps); header.infotableofs = LONG(header.infotableofs); // read wad file directory i = header.numlumps * sizeof (*fileinfo); fileinfov = fileinfo = malloc(i); if (fseek(handle, header.infotableofs, SEEK_SET) == -1 || fread(fileinfo, 1, i, handle) < i) { CONS_Alert(CONS_ERROR, M_GetText("Corrupt wadfile directory (%s)\n"), strerror(ferror(handle))); free(fileinfov); return NULL; } numlumps = header.numlumps; // fill in lumpinfo for this wad lump_p = lumpinfo = Z_Malloc(numlumps * sizeof (*lumpinfo), PU_STATIC, NULL); for (i = 0; i < numlumps; i++, lump_p++, fileinfo++) { lump_p->position = LONG(fileinfo->filepos); lump_p->size = lump_p->disksize = LONG(fileinfo->size); if (compressed) // wad is compressed, lump might be { UINT32 realsize = 0; if (fseek(handle, lump_p->position, SEEK_SET) == -1 || fread(&realsize, 1, sizeof realsize, handle) < sizeof realsize) { I_Error("corrupt compressed file: %s; maybe %s", /// \todo Avoid the bailout? filename, strerror(ferror(handle))); } realsize = LONG(realsize); if (realsize != 0) { lump_p->size = realsize; lump_p->compression = CM_LZF; } else { lump_p->size -= 4; lump_p->compression = CM_NOCOMPRESSION; } lump_p->position += 4; lump_p->disksize -= 4; } else lump_p->compression = CM_NOCOMPRESSION; memset(lump_p->name, 0x00, 9); strncpy(lump_p->name, fileinfo->name, 8); // Allocate the lump's full name. lump_p->name2 = Z_Malloc(9 * sizeof(char), PU_STATIC, NULL); strncpy(lump_p->name2, fileinfo->name, 8); lump_p->name2[8] = '\0'; } free(fileinfov); *nlmp = numlumps; return lumpinfo; } /** Optimized pattern search in a file. */ static boolean ResFindSignature (FILE* handle, char endPat[], UINT32 startpos) { char *s; int c; fseek(handle, startpos, SEEK_SET); s = endPat; while((c = fgetc(handle)) != EOF) { if (*s != c && s > endPat) // No match? s = endPat; // We "reset" the counter by sending the s pointer back to the start of the array. if (*s == c) { s++; if (*s == 0x00) // The array pointer has reached the key char which marks the end. It means we have matched the signature. { return true; } } } return false; } #if defined(_MSC_VER) #pragma pack(1) #endif typedef struct zend_s { char signature[4]; UINT16 diskpos; UINT16 cdirdisk; UINT16 diskentries; UINT16 entries; UINT32 cdirsize; UINT32 cdiroffset; UINT16 commentlen; } ATTRPACK zend_t; typedef struct zentry_s { char signature[4]; UINT16 version; UINT16 versionneeded; UINT16 flags; UINT16 compression; UINT16 modtime; UINT16 moddate; UINT32 CRC32; UINT32 compsize; UINT32 size; UINT16 namelen; UINT16 xtralen; UINT16 commlen; UINT16 diskstart; UINT16 attrint; UINT32 attrext; UINT32 offset; } ATTRPACK zentry_t; typedef struct zlentry_s { char signature[4]; UINT16 versionneeded; UINT16 flags; UINT16 compression; UINT16 modtime; UINT16 moddate; UINT32 CRC32; UINT32 compsize; UINT32 size; UINT16 namelen; UINT16 xtralen; } ATTRPACK zlentry_t; #if defined(_MSC_VER) #pragma pack() #endif /** Create a lumpinfo_t array for a PKZip file. */ static lumpinfo_t* ResGetLumpsZip (FILE* handle, UINT16* nlmp) { zend_t zend; zentry_t* zentries; zentry_t* zentry; UINT16 numlumps = *nlmp; lumpinfo_t* lumpinfo; lumpinfo_t *lump_p; size_t i; char pat_central[] = {0x50, 0x4b, 0x01, 0x02, 0x00}; char pat_end[] = {0x50, 0x4b, 0x05, 0x06, 0x00}; // Look for central directory end signature near end of file. // Contains entry number (number of lumps), and central directory start offset. fseek(handle, 0, SEEK_END); if (!ResFindSignature(handle, pat_end, max(0, ftell(handle) - (22 + 65536)))) { CONS_Alert(CONS_ERROR, "Missing central directory\n"); return NULL; } fseek(handle, -4, SEEK_CUR); if (fread(&zend, 1, sizeof zend, handle) < sizeof zend) { CONS_Alert(CONS_ERROR, "Corrupt central directory (%s)\n", strerror(ferror(handle))); return NULL; } numlumps = zend.entries; lump_p = lumpinfo = Z_Malloc(numlumps * sizeof (*lumpinfo), PU_STATIC, NULL); zentry = zentries = malloc(numlumps * sizeof (*zentries)); fseek(handle, zend.cdiroffset, SEEK_SET); for (i = 0; i < numlumps; i++, zentry++, lump_p++) { char* fullname; char* trimname; char* dotpos; if (fread(zentry, 1, sizeof(zentry_t), handle) < sizeof(zentry_t)) { CONS_Alert(CONS_ERROR, "Failed to read central directory (%s)\n", strerror(ferror(handle))); Z_Free(lumpinfo); free(zentries); return NULL; } if (memcmp(zentry->signature, pat_central, 4)) { CONS_Alert(CONS_ERROR, "Central directory is corrupt\n"); Z_Free(lumpinfo); free(zentries); return NULL; } lump_p->position = zentry->offset + zentry->namelen + zentry->xtralen + sizeof(zlentry_t); lump_p->disksize = zentry->compsize; lump_p->size = zentry->size; fullname = malloc(zentry->namelen + 1); if (fgets(fullname, zentry->namelen + 1, handle) != fullname) { CONS_Alert(CONS_ERROR, "Unable to read lumpname (%s)\n", strerror(ferror(handle))); Z_Free(lumpinfo); free(zentries); free(fullname); return NULL; } // Strip away file address and extension for the 8char name. if ((trimname = strrchr(fullname, '/')) != 0) trimname++; else trimname = fullname; // Care taken for root files. if ((dotpos = strrchr(trimname, '.')) == 0) dotpos = fullname + strlen(fullname); // Watch for files without extension. memset(lump_p->name, '\0', 9); // Making sure they're initialized to 0. Is it necessary? strncpy(lump_p->name, trimname, min(8, dotpos - trimname)); lump_p->name2 = Z_Calloc(zentry->namelen + 1, PU_STATIC, NULL); strncpy(lump_p->name2, fullname, zentry->namelen); free(fullname); switch(zentry->compression) { case 0: lump_p->compression = CM_NOCOMPRESSION; break; #ifdef HAVE_ZLIB case 8: lump_p->compression = CM_DEFLATE; break; #endif case 14: lump_p->compression = CM_LZF; break; default: CONS_Alert(CONS_WARNING, "%s: Unsupported compression method\n", fullname); lump_p->compression = CM_UNSUPPORTED; break; } } free(zentries); *nlmp = numlumps; return lumpinfo; } // Allocate a wadfile, setup the lumpinfo (directory) and // lumpcache, add the wadfile to the current active wadfiles // // now returns index into wadfiles[], you can get wadfile_t * // with: // wadfiles[] // // return -1 in case of problem // // Can now load dehacked files (.soc) // UINT16 W_InitFile(const char *filename, boolean mainfile) { FILE *handle; lumpinfo_t *lumpinfo = NULL; wadfile_t *wadfile; restype_t type; UINT16 numlumps = 0; size_t i; size_t packetsize; UINT8 md5sum[16]; boolean important; if (!(refreshdirmenu & REFRESHDIR_ADDFILE)) refreshdirmenu = REFRESHDIR_NORMAL|REFRESHDIR_ADDFILE; // clean out cons_alerts that happened earlier if (refreshdirname) Z_Free(refreshdirname); if (dirmenu) { refreshdirname = Z_StrDup(filename); nameonly(refreshdirname); } else refreshdirname = NULL; //CONS_Debug(DBG_SETUP, "Loading %s\n", filename); // // check if limit of active wadfiles // if (numwadfiles >= MAX_WADFILES) { CONS_Alert(CONS_ERROR, M_GetText("Maximum wad files reached\n")); refreshdirmenu |= REFRESHDIR_MAX; return INT16_MAX; } // open wad file if ((handle = W_OpenWadFile(&filename, true)) == NULL) return INT16_MAX; // Check if wad files will overflow fileneededbuffer. Only the filename part // is send in the packet; cf. // see PutFileNeeded in d_netfil.c if ((important = !W_VerifyNMUSlumps(filename))) { packetsize = packetsizetally + nameonlylength(filename) + 22; if (packetsize > MAXFILENEEDED*sizeof(UINT8)) { CONS_Alert(CONS_ERROR, M_GetText("Maximum wad files reached\n")); refreshdirmenu |= REFRESHDIR_MAX; if (handle) fclose(handle); return INT16_MAX; } packetsizetally = packetsize; } #ifndef NOMD5 // // w-waiiiit! // Let's not add a wad file if the MD5 matches // an MD5 of an already added WAD file! // W_MakeFileMD5(filename, md5sum); for (i = 0; i < numwadfiles; i++) { if (!memcmp(wadfiles[i]->md5sum, md5sum, 16)) { CONS_Alert(CONS_ERROR, M_GetText("%s is already loaded\n"), filename); if (handle) fclose(handle); return INT16_MAX; } } #endif switch(type = ResourceFileDetect(filename)) { case RET_SOC: lumpinfo = ResGetLumpsStandalone(handle, &numlumps, "OBJCTCFG"); break; #ifdef HAVE_BLUA case RET_LUA: lumpinfo = ResGetLumpsStandalone(handle, &numlumps, "LUA_INIT"); break; #endif case RET_PK3: lumpinfo = ResGetLumpsZip(handle, &numlumps); break; case RET_WAD: lumpinfo = ResGetLumpsWad(handle, &numlumps, filename); break; default: CONS_Alert(CONS_ERROR, "Unsupported file format\n"); } if (lumpinfo == NULL) { fclose(handle); return INT16_MAX; } // // link wad file to search files // wadfile = Z_Malloc(sizeof (*wadfile), PU_STATIC, NULL); wadfile->filename = Z_StrDup(filename); wadfile->type = type; wadfile->handle = handle; wadfile->numlumps = (UINT16)numlumps; wadfile->lumpinfo = lumpinfo; wadfile->important = important; fseek(handle, 0, SEEK_END); wadfile->filesize = (unsigned)ftell(handle); wadfile->type = type; // already generated, just copy it over M_Memcpy(&wadfile->md5sum, &md5sum, 16); // // set up caching // Z_Calloc(numlumps * sizeof (*wadfile->lumpcache), PU_STATIC, &wadfile->lumpcache); Z_Calloc(numlumps * sizeof (*wadfile->patchcache), PU_STATIC, &wadfile->patchcache); #ifdef HWRENDER // allocates GLPatch info structures and store them in a tree wadfile->hwrcache = M_AATreeAlloc(AATREE_ZUSER); #endif // // add the wadfile // CONS_Printf(M_GetText("Added file %s (%u lumps)\n"), filename, numlumps); wadfiles[numwadfiles] = wadfile; numwadfiles++; // must come BEFORE W_LoadDehackedLumps, so any addfile called by COM_BufInsertText called by Lua doesn't overwrite what we just loaded // TODO: HACK ALERT - Load Lua & SOC stuff right here. I feel like this should be out of this place, but... Let's stick with this for now. switch (wadfile->type) { case RET_WAD: W_LoadDehackedLumps(numwadfiles - 1, mainfile); break; case RET_PK3: W_LoadDehackedLumpsPK3(numwadfiles - 1, mainfile); break; case RET_SOC: CONS_Printf(M_GetText("Loading SOC from %s\n"), wadfile->filename); DEH_LoadDehackedLumpPwad(numwadfiles - 1, 0, mainfile); break; #ifdef HAVE_BLUA case RET_LUA: LUA_LoadLump(numwadfiles - 1, 0); break; #endif default: break; } W_InvalidateLumpnumCache(); return wadfile->numlumps; } /** Tries to load a series of files. * All files are wads unless they have an extension of ".soc" or ".lua". * * Each file is optional, but at least one file must be found or an error will * result. Lump names can appear multiple times. The name searcher looks * backwards, so a later file overrides all earlier ones. * * \param filenames A null-terminated list of files to use. * \return 1 if all files were loaded, 0 if at least one was missing or * invalid. */ INT32 W_InitMultipleFiles(char **filenames, UINT16 mainfiles) { INT32 rc = 1; // open all the files, load headers, and count lumps numwadfiles = 0; // will be realloced as lumps are added for (; *filenames; filenames++) { //CONS_Debug(DBG_SETUP, "Loading %s\n", *filenames); rc &= (W_InitFile(*filenames, numwadfiles < mainfiles) != INT16_MAX) ? 1 : 0; } if (!numwadfiles) I_Error("W_InitMultipleFiles: no files found"); return rc; } /** Make sure a lump number is valid. * Compiles away to nothing if PARANOIA is not defined. */ static boolean TestValidLump(UINT16 wad, UINT16 lump) { I_Assert(wad < MAX_WADFILES); if (!wadfiles[wad]) // make sure the wad file exists return false; I_Assert(lump < wadfiles[wad]->numlumps); if (lump >= wadfiles[wad]->numlumps) // make sure the lump exists return false; return true; } const char *W_CheckNameForNumPwad(UINT16 wad, UINT16 lump) { if (lump >= wadfiles[wad]->numlumps || !TestValidLump(wad, 0)) return NULL; return wadfiles[wad]->lumpinfo[lump].name; } const char *W_CheckNameForNum(lumpnum_t lumpnum) { return W_CheckNameForNumPwad(WADFILENUM(lumpnum),LUMPNUM(lumpnum)); } // // Same as the original, but checks in one pwad only. // wadid is a wad number // (Used for sprites loading) // // 'startlump' is the lump number to start the search // UINT16 W_CheckNumForNamePwad(const char *name, UINT16 wad, UINT16 startlump) { UINT16 i; static char uname[9]; memset(uname, 0x00, sizeof uname); strncpy(uname, name, 8); uname[8] = 0; strupr(uname); if (!TestValidLump(wad,0)) return INT16_MAX; // // scan forward // start at 'startlump', useful parameter when there are multiple // resources with the same name // if (startlump < wadfiles[wad]->numlumps) { lumpinfo_t *lump_p = wadfiles[wad]->lumpinfo + startlump; for (i = startlump; i < wadfiles[wad]->numlumps; i++, lump_p++) if (memcmp(lump_p->name,uname,8) == 0) return i; } // not found. return INT16_MAX; } // Look for the first lump from a folder. UINT16 W_CheckNumForFolderStartPK3(const char *name, UINT16 wad, UINT16 startlump) { INT32 i; lumpinfo_t *lump_p = wadfiles[wad]->lumpinfo + startlump; for (i = startlump; i < wadfiles[wad]->numlumps; i++, lump_p++) { if (strnicmp(name, lump_p->name2, strlen(name)) == 0) break; } return i; } // In a PK3 type of resource file, it looks for the next lumpinfo entry that doesn't share the specified pathfile. // Useful for finding folder ends. // Returns the position of the lumpinfo entry. UINT16 W_CheckNumForFolderEndPK3(const char *name, UINT16 wad, UINT16 startlump) { INT32 i; lumpinfo_t *lump_p = wadfiles[wad]->lumpinfo + startlump; for (i = startlump; i < wadfiles[wad]->numlumps; i++, lump_p++) { if (strnicmp(name, lump_p->name2, strlen(name))) break; } return i; } // In a PK3 type of resource file, it looks for an entry with the specified full name. // Returns lump position in PK3's lumpinfo, or INT16_MAX if not found. UINT16 W_CheckNumForFullNamePK3(const char *name, UINT16 wad, UINT16 startlump) { INT32 i; lumpinfo_t *lump_p = wadfiles[wad]->lumpinfo + startlump; for (i = startlump; i < wadfiles[wad]->numlumps; i++, lump_p++) { if (!strnicmp(name, lump_p->name2, strlen(name))) { return i; } } // Not found at all? return INT16_MAX; } // // W_CheckNumForName // Returns LUMPERROR if name not found. // lumpnum_t W_CheckNumForName(const char *name) { INT32 i; lumpnum_t check = INT16_MAX; // Check the lumpnumcache first. Loop backwards so that we check // most recent entries first for (i = lumpnumcacheindex + LUMPNUMCACHESIZE; i > lumpnumcacheindex; i--) { if (strncmp(lumpnumcache[i & (LUMPNUMCACHESIZE - 1)].lumpname, name, 8) == 0) { lumpnumcacheindex = i & (LUMPNUMCACHESIZE - 1); return lumpnumcache[lumpnumcacheindex].lumpnum; } } // scan wad files backwards so patch lump files take precedence for (i = numwadfiles - 1; i >= 0; i--) { check = W_CheckNumForNamePwad(name,(UINT16)i,0); if (check != INT16_MAX) break; //found it } if (check == INT16_MAX) return LUMPERROR; else { // Update the cache. lumpnumcacheindex = (lumpnumcacheindex + 1) & (LUMPNUMCACHESIZE - 1); strncpy(lumpnumcache[lumpnumcacheindex].lumpname, name, 8); lumpnumcache[lumpnumcacheindex].lumpnum = (i<<16)+check; return lumpnumcache[lumpnumcacheindex].lumpnum; } } // Look for valid map data through all added files in descendant order. // Get a map marker for WADs, and a standalone WAD file lump inside PK3s. // TODO: Make it search through cache first, maybe...? lumpnum_t W_CheckNumForMap(const char *name) { UINT16 lumpNum, end; UINT32 i; for (i = numwadfiles - 1; i < numwadfiles; i--) { if (wadfiles[i]->type == RET_WAD) { for (lumpNum = 0; lumpNum < wadfiles[i]->numlumps; lumpNum++) if (!strncmp(name, (wadfiles[i]->lumpinfo + lumpNum)->name, 8)) return (i<<16) + lumpNum; } else if (wadfiles[i]->type == RET_PK3) { lumpNum = W_CheckNumForFolderStartPK3("maps/", i, 0); if (lumpNum != INT16_MAX) end = W_CheckNumForFolderEndPK3("maps/", i, lumpNum); else continue; // Now look for the specified map. for (++lumpNum; lumpNum < end; lumpNum++) if (!strnicmp(name, (wadfiles[i]->lumpinfo + lumpNum)->name, 8)) return (i<<16) + lumpNum; } } return LUMPERROR; } // // W_GetNumForName // // Calls W_CheckNumForName, but bombs out if not found. // lumpnum_t W_GetNumForName(const char *name) { lumpnum_t i; i = W_CheckNumForName(name); if (i == LUMPERROR) I_Error("W_GetNumForName: %s not found!\n", name); return i; } // // W_CheckNumForNameInBlock // Checks only in blocks from blockstart lump to blockend lump // lumpnum_t W_CheckNumForNameInBlock(const char *name, const char *blockstart, const char *blockend) { INT32 i; lumpnum_t bsid, beid; lumpnum_t check = INT16_MAX; // scan wad files backwards so patch lump files take precedence for (i = numwadfiles - 1; i >= 0; i--) { if (wadfiles[i]->type == RET_WAD) { bsid = W_CheckNumForNamePwad(blockstart, (UINT16)i, 0); if (bsid == INT16_MAX) continue; // Start block doesn't exist? beid = W_CheckNumForNamePwad(blockend, (UINT16)i, 0); if (beid == INT16_MAX) continue; // End block doesn't exist? check = W_CheckNumForNamePwad(name, (UINT16)i, bsid); if (check < beid) return (i<<16)+check; // found it, in our constraints } } return LUMPERROR; } // Used by Lua. Case sensitive lump checking, quickly... #include "fastcmp.h" UINT8 W_LumpExists(const char *name) { INT32 i,j; for (i = numwadfiles - 1; i >= 0; i--) { lumpinfo_t *lump_p = wadfiles[i]->lumpinfo; for (j = 0; j < wadfiles[i]->numlumps; ++j, ++lump_p) if (fastcmp(lump_p->name,name)) return true; } return false; } size_t W_LumpLengthPwad(UINT16 wad, UINT16 lump) { if (!TestValidLump(wad, lump)) return 0; return wadfiles[wad]->lumpinfo[lump].size; } /** Returns the buffer size needed to load the given lump. * * \param lump Lump number to look at. * \return Buffer size needed, in bytes. */ size_t W_LumpLength(lumpnum_t lumpnum) { return W_LumpLengthPwad(WADFILENUM(lumpnum),LUMPNUM(lumpnum)); } // // W_IsLumpWad // Is the lump a WAD? (presumably in a PK3) // boolean W_IsLumpWad(lumpnum_t lumpnum) { if (wadfiles[WADFILENUM(lumpnum)]->type == RET_PK3) { const char *lumpfullName = (wadfiles[WADFILENUM(lumpnum)]->lumpinfo + LUMPNUM(lumpnum))->name2; if (strlen(lumpfullName) < 4) return false; // can't possibly be a WAD can it? return !strnicmp(lumpfullName + strlen(lumpfullName) - 4, ".wad", 4); } return false; // WADs should never be inside non-PK3s as far as SRB2 is concerned } // // W_IsLumpFolder // Is the lump a folder? (in a PK3 obviously) // boolean W_IsLumpFolder(UINT16 wad, UINT16 lump) { if (wadfiles[wad]->type == RET_PK3) { const char *name = wadfiles[wad]->lumpinfo[lump].name2; return (name[strlen(name)-1] == '/'); // folders end in '/' } return false; // non-PK3s don't have folders } #ifdef HAVE_ZLIB /* report a zlib or i/o error */ void zerr(int ret) { CONS_Printf("zpipe: "); switch (ret) { case Z_ERRNO: if (ferror(stdin)) CONS_Printf("error reading stdin\n"); if (ferror(stdout)) CONS_Printf("error writing stdout\n"); break; case Z_STREAM_ERROR: CONS_Printf("invalid compression level\n"); break; case Z_DATA_ERROR: CONS_Printf("invalid or incomplete deflate data\n"); break; case Z_MEM_ERROR: CONS_Printf("out of memory\n"); break; case Z_VERSION_ERROR: CONS_Printf("zlib version mismatch!\n"); } } #endif #ifdef NO_PNG_LUMPS static void ErrorIfPNG(UINT8 *d, size_t s, char *f, char *l) { if (s < 67) // http://garethrees.org/2007/11/14/pngcrush/ return; // Check for PNG file signature using memcmp // As it may be faster on CPUs with slow unaligned memory access // Ref: http://www.libpng.org/pub/png/spec/1.2/PNG-Rationale.html#R.PNG-file-signature if (memcmp(&d[0], "\x89\x50\x4e\x47\x0d\x0a\x1a\x0a", 8) == 0) { I_Error("W_Wad: Lump \"%s\" in file \"%s\" is a .PNG - please convert to either Doom or Flat (raw) image format.", l, f); } } #endif /** Reads bytes from the head of a lump. * Note: If the lump is compressed, the whole thing has to be read anyway. * * \param wad Wad number to read from. * \param lump Lump number to read from. * \param dest Buffer in memory to serve as destination. * \param size Number of bytes to read. * \param offest Number of bytes to offset. * \return Number of bytes read (should equal size). * \sa W_ReadLump, W_RawReadLumpHeader */ size_t W_ReadLumpHeaderPwad(UINT16 wad, UINT16 lump, void *dest, size_t size, size_t offset) { size_t lumpsize; lumpinfo_t *l; FILE *handle; if (!TestValidLump(wad,lump)) return 0; lumpsize = wadfiles[wad]->lumpinfo[lump].size; // empty resource (usually markers like S_START, F_END ..) if (!lumpsize || lumpsize lumpsize) size = lumpsize - offset; // Let's get the raw lump data. // We setup the desired file handle to read the lump data. l = wadfiles[wad]->lumpinfo + lump; handle = wadfiles[wad]->handle; fseek(handle, (long)(l->position + offset), SEEK_SET); // But let's not copy it yet. We support different compression formats on lumps, so we need to take that into account. switch(wadfiles[wad]->lumpinfo[lump].compression) { case CM_NOCOMPRESSION: // If it's uncompressed, we directly write the data into our destination, and return the bytes read. #ifdef NO_PNG_LUMPS { size_t bytesread = fread(dest, 1, size, handle); ErrorIfPNG(dest, bytesread, wadfiles[wad]->filename, l->name2); return bytesread; } #else return fread(dest, 1, size, handle); #endif case CM_LZF: // Is it LZF compressed? Used by ZWADs. { #ifdef ZWAD char *rawData; // The lump's raw data. char *decData; // Lump's decompressed real data. size_t retval; // Helper var, lzf_decompress returns 0 when an error occurs. rawData = Z_Malloc(l->disksize, PU_STATIC, NULL); decData = Z_Malloc(l->size, PU_STATIC, NULL); if (fread(rawData, 1, l->disksize, handle) < l->disksize) I_Error("wad %d, lump %d: cannot read compressed data", wad, lump); retval = lzf_decompress(rawData, l->disksize, decData, l->size); #ifndef AVOID_ERRNO if (retval == 0) // If this was returned, check if errno was set { // errno is a global var set by the lzf functions when something goes wrong. if (errno == E2BIG) I_Error("wad %d, lump %d: compressed data too big (bigger than %s)", wad, lump, sizeu1(l->size)); else if (errno == EINVAL) I_Error("wad %d, lump %d: invalid compressed data", wad, lump); } // Otherwise, fall back on below error (if zero was actually the correct size then ???) #endif if (retval != l->size) { I_Error("wad %d, lump %d: decompressed to wrong number of bytes (expected %s, got %s)", wad, lump, sizeu1(l->size), sizeu2(retval)); } if (!decData) // Did we get no data at all? return 0; M_Memcpy(dest, decData + offset, size); Z_Free(rawData); Z_Free(decData); #ifdef NO_PNG_LUMPS ErrorIfPNG(dest, size, wadfiles[wad]->filename, l->name2); #endif return size; #else //I_Error("ZWAD files not supported on this platform."); return 0; #endif } #ifdef HAVE_ZLIB case CM_DEFLATE: // Is it compressed via DEFLATE? Very common in ZIPs/PK3s, also what most doom-related editors support. { UINT8 *rawData; // The lump's raw data. UINT8 *decData; // Lump's decompressed real data. int zErr; // Helper var. z_stream strm; unsigned long rawSize = l->disksize; unsigned long decSize = l->size; rawData = Z_Malloc(rawSize, PU_STATIC, NULL); decData = Z_Malloc(decSize, PU_STATIC, NULL); if (fread(rawData, 1, rawSize, handle) < rawSize) I_Error("wad %d, lump %d: cannot read compressed data", wad, lump); strm.zalloc = Z_NULL; strm.zfree = Z_NULL; strm.opaque = Z_NULL; strm.total_in = strm.avail_in = rawSize; strm.total_out = strm.avail_out = decSize; strm.next_in = rawData; strm.next_out = decData; zErr = inflateInit2(&strm, -15); if (zErr == Z_OK) { zErr = inflate(&strm, Z_FINISH); if (zErr == Z_STREAM_END) { M_Memcpy(dest, decData, size); } else { size = 0; zerr(zErr); } (void)inflateEnd(&strm); } else { size = 0; zerr(zErr); } Z_Free(rawData); Z_Free(decData); #ifdef NO_PNG_LUMPS ErrorIfPNG(dest, size, wadfiles[wad]->filename, l->name2); #endif return size; } #endif default: I_Error("wad %d, lump %d: unsupported compression type!", wad, lump); } return 0; } size_t W_ReadLumpHeader(lumpnum_t lumpnum, void *dest, size_t size, size_t offset) { return W_ReadLumpHeaderPwad(WADFILENUM(lumpnum), LUMPNUM(lumpnum), dest, size, offset); } /** Reads a lump into memory. * * \param lump Lump number to read from. * \param dest Buffer in memory to serve as destination. Size must be >= * W_LumpLength(). * \sa W_ReadLumpHeader */ void W_ReadLump(lumpnum_t lumpnum, void *dest) { W_ReadLumpHeaderPwad(WADFILENUM(lumpnum),LUMPNUM(lumpnum),dest,0,0); } void W_ReadLumpPwad(UINT16 wad, UINT16 lump, void *dest) { W_ReadLumpHeaderPwad(wad, lump, dest, 0, 0); } // ========================================================================== // W_CacheLumpNum // ========================================================================== void *W_CacheLumpNumPwad(UINT16 wad, UINT16 lump, INT32 tag) { lumpcache_t *lumpcache; if (!TestValidLump(wad,lump)) return NULL; lumpcache = wadfiles[wad]->lumpcache; if (!lumpcache[lump]) { void *ptr = Z_Malloc(W_LumpLengthPwad(wad, lump), tag, &lumpcache[lump]); W_ReadLumpHeaderPwad(wad, lump, ptr, 0, 0); // read the lump in full } else Z_ChangeTag(lumpcache[lump], tag); return lumpcache[lump]; } void *W_CacheLumpNum(lumpnum_t lumpnum, INT32 tag) { return W_CacheLumpNumPwad(WADFILENUM(lumpnum),LUMPNUM(lumpnum),tag); } // // W_CacheLumpNumForce // // Forces the lump to be loaded, even if it already is! // void *W_CacheLumpNumForce(lumpnum_t lumpnum, INT32 tag) { UINT16 wad, lump; void *ptr; wad = WADFILENUM(lumpnum); lump = LUMPNUM(lumpnum); if (!TestValidLump(wad,lump)) return NULL; ptr = Z_Malloc(W_LumpLengthPwad(wad, lump), tag, NULL); W_ReadLumpHeaderPwad(wad, lump, ptr, 0, 0); // read the lump in full return ptr; } // // W_IsLumpCached // // If a lump is already cached return true, otherwise // return false. // // no outside code uses the PWAD form, for now static inline boolean W_IsLumpCachedPWAD(UINT16 wad, UINT16 lump, void *ptr) { void *lcache; if (!TestValidLump(wad, lump)) return false; lcache = wadfiles[wad]->lumpcache[lump]; if (ptr) { if (ptr == lcache) return true; } else if (lcache) return true; return false; } boolean W_IsLumpCached(lumpnum_t lumpnum, void *ptr) { return W_IsLumpCachedPWAD(WADFILENUM(lumpnum),LUMPNUM(lumpnum), ptr); } // // W_IsPatchCached // // If a patch is already cached return true, otherwise // return false. // // no outside code uses the PWAD form, for now static inline boolean W_IsPatchCachedPWAD(UINT16 wad, UINT16 lump, void *ptr) { void *lcache; if (!TestValidLump(wad, lump)) return false; lcache = wadfiles[wad]->patchcache[lump]; if (ptr) { if (ptr == lcache) return true; } else if (lcache) return true; return false; } boolean W_IsPatchCached(lumpnum_t lumpnum, void *ptr) { return W_IsPatchCachedPWAD(WADFILENUM(lumpnum),LUMPNUM(lumpnum), ptr); } // ========================================================================== // W_CacheLumpName // ========================================================================== void *W_CacheLumpName(const char *name, INT32 tag) { return W_CacheLumpNum(W_GetNumForName(name), tag); } // ========================================================================== // CACHING OF GRAPHIC PATCH RESOURCES // ========================================================================== // Graphic 'patches' are loaded, and if necessary, converted into the format // the most useful for the current rendermode. For software renderer, the // graphic patches are kept as is. For the hardware renderer, graphic patches // are 'unpacked', and are kept into the cache in that unpacked format, and // the heap memory cache then acts as a 'level 2' cache just after the // graphics card memory. // // Cache a patch into heap memory, convert the patch format as necessary // void *W_CachePatchNumPwad(UINT16 wad, UINT16 lump, INT32 tag) { #ifdef HWRENDER GLPatch_t *grPatch; #endif if (!TestValidLump(wad, lump)) return NULL; #ifdef HWRENDER // Software-only compile cache the data without conversion if (rendermode == render_soft || rendermode == render_none) { #endif lumpcache_t *lumpcache = wadfiles[wad]->patchcache; if (!lumpcache[lump]) { size_t len = W_LumpLengthPwad(wad, lump); void *ptr, *lumpdata; #ifndef NO_PNG_LUMPS void *srcdata = NULL; #endif ptr = Z_Malloc(len, tag, &lumpcache[lump]); lumpdata = Z_Malloc(len, tag, NULL); // read the lump in full W_ReadLumpHeaderPwad(wad, lump, lumpdata, 0, 0); #ifndef NO_PNG_LUMPS // lump is a png so convert it if (R_IsLumpPNG((UINT8 *)lumpdata, len)) { size_t newlen; srcdata = R_PNGToPatch((UINT8 *)lumpdata, len, &newlen, true); ptr = Z_Realloc(ptr, newlen, tag, &lumpcache[lump]); M_Memcpy(ptr, srcdata, newlen); Z_Free(srcdata); } else // just copy it into the patch cache #endif M_Memcpy(ptr, lumpdata, len); } else Z_ChangeTag(lumpcache[lump], tag); return lumpcache[lump]; #ifdef HWRENDER } grPatch = HWR_GetCachedGLPatchPwad(wad, lump); if (grPatch->mipmap->grInfo.data) { if (tag == PU_CACHE) tag = PU_HWRCACHE; Z_ChangeTag(grPatch->mipmap->grInfo.data, tag); } else { patch_t *ptr = NULL; // Only load the patch if we haven't initialised the grPatch yet if (grPatch->mipmap->width == 0) ptr = W_CacheLumpNumPwad(grPatch->wadnum, grPatch->lumpnum, PU_STATIC); // Run HWR_MakePatch in all cases, to recalculate some things HWR_MakePatch(ptr, grPatch, grPatch->mipmap, false); Z_Free(ptr); } // return GLPatch_t, which can be casted to (patch_t) with valid patch header info return (void *)grPatch; #endif } void *W_CachePatchNum(lumpnum_t lumpnum, INT32 tag) { return W_CachePatchNumPwad(WADFILENUM(lumpnum),LUMPNUM(lumpnum),tag); } void W_UnlockCachedPatch(void *patch) { // The hardware code does its own memory management, as its patches // have different lifetimes from software's. #ifdef HWRENDER if (rendermode != render_soft && rendermode != render_none) HWR_UnlockCachedPatch((GLPatch_t*)patch); else #endif Z_Unlock(patch); } void *W_CachePatchName(const char *name, INT32 tag) { lumpnum_t num; num = W_CheckNumForName(name); if (num == LUMPERROR) return W_CachePatchNum(W_GetNumForName("MISSING"), tag); return W_CachePatchNum(num, tag); } #ifndef NOMD5 #define MD5_LEN 16 /** * Prints an MD5 string into a human-readable textual format. * * \param md5 The md5 in binary form -- MD5_LEN (16) bytes. * \param buf Where to print the textual form. Needs 2*MD5_LEN+1 (33) bytes. * \author Graue */ #define MD5_FORMAT \ "%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x" static void PrintMD5String(const UINT8 *md5, char *buf) { snprintf(buf, 2*MD5_LEN+1, MD5_FORMAT, md5[0], md5[1], md5[2], md5[3], md5[4], md5[5], md5[6], md5[7], md5[8], md5[9], md5[10], md5[11], md5[12], md5[13], md5[14], md5[15]); } #endif /** Verifies a file's MD5 is as it should be. * For releases, used as cheat prevention -- if the MD5 doesn't match, a * fatal error is thrown. In debug mode, an MD5 mismatch only triggers a * warning. * * \param wadfilenum Number of the loaded wad file to check. * \param matchmd5 The MD5 sum this wad should have, expressed as a * textual string. * \author Graue */ void W_VerifyFileMD5(UINT16 wadfilenum, const char *matchmd5) { #ifdef NOMD5 (void)wadfilenum; (void)matchmd5; #else UINT8 realmd5[MD5_LEN]; INT32 ix; I_Assert(strlen(matchmd5) == 2*MD5_LEN); I_Assert(wadfilenum < numwadfiles); // Convert an md5 string like "7d355827fa8f981482246d6c95f9bd48" // into a real md5. for (ix = 0; ix < 2*MD5_LEN; ix++) { INT32 n, c = matchmd5[ix]; if (isdigit(c)) n = c - '0'; else { I_Assert(isxdigit(c)); if (isupper(c)) n = c - 'A' + 10; else n = c - 'a' + 10; } if (ix & 1) realmd5[ix>>1] = (UINT8)(realmd5[ix>>1]+n); else realmd5[ix>>1] = (UINT8)(n<<4); } if (memcmp(realmd5, wadfiles[wadfilenum]->md5sum, 16)) { char actualmd5text[2*MD5_LEN+1]; PrintMD5String(wadfiles[wadfilenum]->md5sum, actualmd5text); /*#ifdef _DEBUG CONS_Printf #else I_Error #endif (M_GetText("File is corrupt or has been modified: %s (found md5: %s, wanted: %s)\n"), wadfiles[wadfilenum]->filename, actualmd5text, matchmd5);*/ } #endif } // Verify versions for different archive // formats. checklist assumed to be valid. static int W_VerifyName (const char *name, lumpchecklist_t *checklist, boolean status) { size_t j; for (j = 0; checklist[j].len && checklist[j].name; ++j) { if (( strncmp(name, checklist[j].name, checklist[j].len) != false ) == status) { return true; } } return false; } static int W_VerifyWAD (FILE *fp, lumpchecklist_t *checklist, boolean status) { size_t i; // assume wad file wadinfo_t header; filelump_t lumpinfo; // read the header if (fread(&header, 1, sizeof header, fp) == sizeof header && header.numlumps < INT16_MAX && strncmp(header.identification, "ZWAD", 4) && strncmp(header.identification, "IWAD", 4) && strncmp(header.identification, "PWAD", 4) && strncmp(header.identification, "SDLL", 4)) { return true; } header.numlumps = LONG(header.numlumps); header.infotableofs = LONG(header.infotableofs); // let seek to the lumpinfo list if (fseek(fp, header.infotableofs, SEEK_SET) == -1) return true; for (i = 0; i < header.numlumps; i++) { // fill in lumpinfo for this wad file directory if (fread(&lumpinfo, sizeof (lumpinfo), 1 , fp) != 1) return true; lumpinfo.filepos = LONG(lumpinfo.filepos); lumpinfo.size = LONG(lumpinfo.size); if (lumpinfo.size == 0) continue; if (! W_VerifyName(lumpinfo.name, checklist, status)) return false; } return true; } static int W_VerifyPK3 (FILE *fp, lumpchecklist_t *checklist, boolean status) { zend_t zend; zentry_t zentry; UINT16 numlumps; size_t i; char pat_central[] = {0x50, 0x4b, 0x01, 0x02, 0x00}; char pat_end[] = {0x50, 0x4b, 0x05, 0x06, 0x00}; char lumpname[9]; // Haha the ResGetLumpsZip function doesn't // check for file errors, so neither will I. // Central directory bullshit fseek(fp, 0, SEEK_END); if (!ResFindSignature(fp, pat_end, max(0, ftell(fp) - (22 + 65536)))) return true; fseek(fp, -4, SEEK_CUR); if (fread(&zend, 1, sizeof zend, fp) < sizeof zend) return true; numlumps = zend.entries; fseek(fp, zend.cdiroffset, SEEK_SET); for (i = 0; i < numlumps; i++) { char* fullname; char* trimname; char* dotpos; if (fread(&zentry, 1, sizeof(zentry_t), fp) < sizeof(zentry_t)) return true; if (memcmp(zentry.signature, pat_central, 4)) return true; fullname = malloc(zentry.namelen + 1); if (fgets(fullname, zentry.namelen + 1, fp) != fullname) return true; // Strip away file address and extension for the 8char name. if ((trimname = strrchr(fullname, '/')) != 0) trimname++; else trimname = fullname; // Care taken for root files. if (*trimname) // Ignore directories { if ((dotpos = strrchr(trimname, '.')) == 0) dotpos = fullname + strlen(fullname); // Watch for files without extension. memset(lumpname, '\0', 9); // Making sure they're initialized to 0. Is it necessary? strncpy(lumpname, trimname, min(8, dotpos - trimname)); if (! W_VerifyName(lumpname, checklist, status)) return false; } free(fullname); } return true; } // Note: This never opens lumps themselves and therefore doesn't have to // deal with compressed lumps. static int W_VerifyFile(const char *filename, lumpchecklist_t *checklist, boolean status) { FILE *handle; int goodfile = false; if (!checklist) I_Error("No checklist for %s\n", filename); // open wad file if ((handle = W_OpenWadFile(&filename, false)) == NULL) return -1; if (stricmp(&filename[strlen(filename) - 4], ".pk3") == 0) goodfile = W_VerifyPK3(handle, checklist, status); else { // detect wad file by the absence of the other supported extensions if (stricmp(&filename[strlen(filename) - 4], ".soc") #ifdef HAVE_BLUA && stricmp(&filename[strlen(filename) - 4], ".lua") #endif ) { goodfile = W_VerifyWAD(handle, checklist, status); } } fclose(handle); return goodfile; } /** Checks a wad for lumps other than music and sound. * Used during game load to verify music.dta is a good file and during a * netgame join (on the server side) to see if a wad is important enough to * be sent. * * \param filename Filename of the wad to check. * \return 1 if file contains only music/sound lumps, 0 if it contains other * stuff (maps, sprites, dehacked lumps, and so on). -1 if there no * file exists with that filename * \author Alam Arias */ int W_VerifyNMUSlumps(const char *filename) { // MIDI, MOD/S3M/IT/XM/OGG/MP3/WAV, WAVE SFX // ENDOOM text and palette lumps lumpchecklist_t NMUSlist[] = { {"D_", 2}, // MIDI music {"O_", 2}, // Digital music {"DS", 2}, // Sound effects {"ENDOOM", 6}, // ENDOOM text lump {"PLAYPAL", 7}, // Palette changes {"PAL", 3}, // Palette changes {"COLORMAP", 8}, // Colormap changes {"CLM", 3}, // Colormap changes {"TRANS", 5}, // Translucency map changes {"LTFNT", 5}, // Level title font changes {"TTL", 3}, // Act number changes {"STCFN", 5}, // Console font changes {"TNYFN", 5}, // Tiny console font changes {"STT", 3}, // Acceptable HUD changes (Score Time Rings) {"YB_", 3}, // Intermission graphics, goes with the above {"M_", 2}, // As does menu stuff {NULL, 0}, }; return W_VerifyFile(filename, NMUSlist, false); }