frontend/main.c

   1 /*
   2  * (C) notaz, 2010
   3  *
   4  * This work is licensed under the terms of the GNU GPLv2 or later.
   5  * See the COPYING file in the top-level directory.
   6  */
   7
   8 #include <stdio.h>
   9 #include <string.h>
  10 #include <stdarg.h>
  11 #include <dlfcn.h>
  12 #include <sys/stat.h>
  13 #include <sys/types.h>
  14 #include <unistd.h>
  15
  16 #include "plugin.h"
  17 #include "../gui/Linux.h"
  18 #include "../libpcsxcore/misc.h"
  19
  20 int UseGui;
  21 static char *(*real_getenv)(const char *name);
  22
  23 static void make_path(char *buf, size_t size, const char *dir, const char *fname)
  24 {
  25         if (fname)
  26                 snprintf(buf, size, ".%s%s", dir, fname);
  27         else
  28                 snprintf(buf, size, ".%s", dir);
  29 }
  30 #define MAKE_PATH(buf, dir, fname) \
  31         make_path(buf, sizeof(buf), dir, fname)
  32
  33 static void create_profile_dir(const char *directory) {
  34         char path[MAXPATHLEN];
  35
  36         MAKE_PATH(path, directory, NULL);
  37         mkdir(path, S_IRWXU | S_IRWXG);
  38 }
  39
  40 static void CheckSubDir() {
  41         // make sure that ~/.pcsx exists
  42         create_profile_dir(PCSX_DOT_DIR);
  43
  44         create_profile_dir(BIOS_DIR);
  45         create_profile_dir(MEMCARD_DIR);
  46         create_profile_dir(STATES_DIR);
  47         create_profile_dir(PLUGINS_DIR);
  48         create_profile_dir(PLUGINS_CFG_DIR);
  49         create_profile_dir(CHEATS_DIR);
  50         create_profile_dir(PATCHES_DIR);
  51 }
  52
  53 static void CreateMemcard(char *filename, char *conf_mcd) {
  54         struct stat buf;
  55
  56         make_path(conf_mcd, MAXPATHLEN, MEMCARD_DIR, filename);
  57
  58         /* Only create a memory card if an existing one does not exist */
  59         if (stat(conf_mcd, &buf) == -1) {
  60                 SysPrintf(_("Creating memory card: %s\n"), conf_mcd);
  61                 CreateMcd(conf_mcd);
  62         }
  63 }
  64
  65 int main(int argc, char *argv[])
  66 {
  67         char file[MAXPATHLEN] = "";
  68         char path[MAXPATHLEN];
  69         int runcd = 0;
  70         int loadst = 0;
  71         void *tmp;
  72         int i;
  73
  74         tmp = dlopen("/lib/libdl.so.2", RTLD_LAZY);
  75         if (tmp != NULL)
  76                 real_getenv = dlsym(tmp, "getenv");
  77         if (real_getenv == NULL) {
  78                 fprintf(stderr, "%s\n", dlerror());
  79                 return 1;
  80         }
  81         dlclose(tmp);
  82
  83         // what is the name of the config file?
  84         // it may be redefined by -cfg on the command line
  85         strcpy(cfgfile_basename, "pcsx.cfg");
  86
  87         emuLog = stdout;
  88         SetIsoFile(NULL);
  89         Config.PsxOut = 1;
  90
  91         // read command line options
  92         for (i = 1; i < argc; i++) {
  93                      if (!strcmp(argv[i], "-psxout")) Config.PsxOut = 1;
  94                 else if (!strcmp(argv[i], "-load")) loadst = atol(argv[++i]);
  95                 else if (!strcmp(argv[i], "-cfg")) {
  96                         if (i+1 >= argc) break;
  97                         strncpy(cfgfile_basename, argv[++i], MAXPATHLEN-100);   /* TODO buffer overruns */
  98                         printf("Using config file %s.\n", cfgfile_basename);
  99                 }
 100                 else if (!strcmp(argv[i], "-cdfile")) {
 101                         char isofilename[MAXPATHLEN];
 102
 103                         if (i+1 >= argc) break;
 104                         strncpy(isofilename, argv[++i], MAXPATHLEN);
 105                         if (isofilename[0] != '/') {
 106                                 getcwd(path, MAXPATHLEN);
 107                                 if (strlen(path) + strlen(isofilename) + 1 < MAXPATHLEN) {
 108                                         strcat(path, "/");
 109                                         strcat(path, isofilename);
 110                                         strcpy(isofilename, path);
 111                                 } else
 112                                         isofilename[0] = 0;
 113                         }
 114
 115                         SetIsoFile(isofilename);
 116                         runcd = 1;
 117                 }
 118                 else if (!strcmp(argv[i], "-h") ||
 119                          !strcmp(argv[i], "-help") ||
 120                          !strcmp(argv[i], "--help")) {
 121                          printf(PACKAGE_NAME " " PACKAGE_VERSION "\n");
 122                          printf("%s\n", _(
 123                                                         " pcsx [options] [file]\n"
 124                                                         "\toptions:\n"
 125                                                         "\t-cdfile FILE\tRuns a CD image file\n"
 126                                                         "\t-nogui\t\tDon't open the GTK GUI\n"
 127                                                         "\t-cfg FILE\tLoads desired configuration file (default: ~/.pcsx/pcsx.cfg)\n"
 128                                                         "\t-psxout\t\tEnable PSX output\n"
 129                                                         "\t-load STATENUM\tLoads savestate STATENUM (1-5)\n"
 130                                                         "\t-h -help\tDisplay this message\n"
 131                                                         "\tfile\t\tLoads file\n"));
 132                          return 0;
 133                 } else {
 134                         strncpy(file, argv[i], MAXPATHLEN);
 135                         if (file[0] != '/') {
 136                                 getcwd(path, MAXPATHLEN);
 137                                 if (strlen(path) + strlen(file) + 1 < MAXPATHLEN) {
 138                                         strcat(path, "/");
 139                                         strcat(path, file);
 140                                         strcpy(file, path);
 141                                 } else
 142                                         file[0] = 0;
 143                         }
 144                 }
 145         }
 146
 147         memset(&Config, 0, sizeof(PcsxConfig));
 148         strcpy(Config.Net, "Disabled");
 149
 150         CheckSubDir();
 151 //      ScanAllPlugins();
 152
 153         strcpy(Config.Bios, "HLE");
 154         strcpy(Config.BiosDir, "./");
 155
 156         strcpy(Config.PluginsDir, "plugins");
 157         strcpy(Config.Gpu, "builtin_gpu");
 158         strcpy(Config.Spu, "builtin_spu");
 159         strcpy(Config.Cdr, "builtin_cdr");
 160         strcpy(Config.Pad1, "builtin_pad");
 161         strcpy(Config.Pad2, "builtin_pad");
 162
 163         // try to load config
 164         // if the config file doesn't exist
 165         if (LoadConfig() == -1) {
 166                 // Uh oh, no config file found, use some defaults
 167                 Config.PsxAuto = 1;
 168
 169                 // create & load default memcards if they don't exist
 170                 CreateMemcard("card1.mcd", Config.Mcd1);
 171                 CreateMemcard("card2.mcd", Config.Mcd2);
 172
 173                 LoadMcds(Config.Mcd1, Config.Mcd2);
 174
 175                 SaveConfig();
 176         }
 177
 178         snprintf(Config.PatchesDir, sizeof(Config.PatchesDir), "." PATCHES_DIR);
 179 /*
 180         // switch to plugin dotdir
 181         // this lets plugins work without modification!
 182         gchar *plugin_default_dir = g_build_filename(getenv("HOME"), PLUGINS_DIR, NULL);
 183         chdir(plugin_default_dir);
 184         g_free(plugin_default_dir);
 185 */
 186         if (SysInit() == -1) return 1;
 187
 188         // if !gui
 189         {
 190                 // the following only occurs if the gui isn't started
 191                 if (LoadPlugins() == -1) {
 192                         SysMessage("Failed loading plugins!");
 193                         return 1;
 194                 }
 195
 196                 if (OpenPlugins() == -1) {
 197                         return 1;
 198                 }
 199
 200                 SysReset();
 201                 CheckCdrom();
 202
 203                 if (file[0] != '\0') {
 204                         Load(file);
 205                 } else {
 206                         if (runcd) {
 207                                 if (LoadCdrom() == -1) {
 208                                         ClosePlugins();
 209                                         printf(_("Could not load CD-ROM!\n"));
 210                                         return -1;
 211                                 }
 212                         }
 213                 }
 214
 215                 // If a state has been specified, then load that
 216                 if (loadst) {
 217                         StatesC = loadst - 1;
 218                         char *state_filename = get_state_filename(StatesC);
 219                         LoadState(state_filename);
 220                         free(state_filename);
 221                 }
 222
 223                 psxCpu->Execute();
 224         }
 225
 226         return 0;
 227 }
 228
 229 int SysInit() {
 230         if (EmuInit() == -1) {
 231                 printf("PSX emulator couldn't be initialized.\n");
 232                 return -1;
 233         }
 234
 235         LoadMcds(Config.Mcd1, Config.Mcd2);     /* TODO Do we need to have this here, or in the calling main() function?? */
 236
 237         if (Config.Debug) {
 238                 StartDebugger();
 239         }
 240
 241         return 0;
 242 }
 243
 244 void SysRunGui() {
 245         printf("SysRunGui\n");
 246 }
 247
 248 void StartGui() {
 249         printf("StartGui\n");
 250 }
 251
 252 void SysReset() {
 253         EmuReset();
 254 }
 255
 256 void SysClose() {
 257         EmuShutdown();
 258         ReleasePlugins();
 259
 260         StopDebugger();
 261
 262         if (emuLog != NULL) fclose(emuLog);
 263 }
 264
 265 void SysUpdate() {
 266         PADhandleKey(PAD1_keypressed());
 267         PADhandleKey(PAD2_keypressed());
 268 }
 269
 270 void UpdateMenuSlots() {
 271 }
 272
 273 void OnFile_Exit() {
 274         printf("OnFile_Exit\n");
 275         exit(0);
 276 }
 277
 278 void state_save(gchar *state_filename) {
 279         char Text[MAXPATHLEN + 20];
 280
 281         GPU_updateLace();
 282
 283         if (SaveState(state_filename) == 0)
 284                 sprintf(Text, _("Saved state %s."), state_filename);
 285         else
 286                 sprintf(Text, _("Error saving state %s!"), state_filename);
 287
 288         GPU_displayText(Text);
 289 }
 290
 291 void state_load(gchar *state_filename) {
 292         int ret;
 293         char Text[MAXPATHLEN + 20];
 294         FILE *fp;
 295
 296         // check if the state file actually exists
 297         fp = fopen(state_filename, "rb");
 298         if (fp == NULL) {
 299                 // file does not exist
 300                 return;
 301         }
 302
 303         fclose(fp);
 304
 305         ret = CheckState(state_filename);
 306
 307         if (ret == 0) {
 308                 SysReset();
 309                 ret = LoadState(state_filename);
 310         }
 311
 312         if (ret == 0) {
 313                 // Check the CD-ROM is valid
 314                 if (CheckCdrom() == -1) {
 315                         ClosePlugins();
 316                         SysRunGui();
 317                         return;
 318                 }
 319
 320                 sprintf(Text, _("Loaded state %s."), state_filename);
 321         } else {
 322                 sprintf(Text, _("Error loading state %s!"), state_filename);
 323         }
 324         GPU_displayText(Text);
 325 }
 326
 327 char *get_state_filename(int i) {
 328         char SStateFile[256];
 329         char trimlabel[33];
 330         int j;
 331
 332         strncpy(trimlabel, CdromLabel, 32);
 333         trimlabel[32] = 0;
 334         for (j = 31; j >= 0; j--)
 335                 if (trimlabel[j] == ' ')
 336                         trimlabel[j] = 0;
 337                 else
 338                         continue;
 339
 340         snprintf(SStateFile, sizeof(SStateFile), "." STATES_DIR "%.32s-%.9s.%3.3d",
 341                 trimlabel, CdromId, i);
 342
 343         return strdup(SStateFile);
 344 }
 345
 346 void SysPrintf(const char *fmt, ...) {
 347         va_list list;
 348         char msg[512];
 349
 350         va_start(list, fmt);
 351         vsprintf(msg, fmt, list);
 352         va_end(list);
 353
 354         if (Config.PsxOut) {
 355                 static char linestart = 1;
 356                 int l = strlen(msg);
 357
 358                 printf(linestart ? " * %s" : "%s", msg);
 359
 360                 if (l > 0 && msg[l - 1] == '\n') {
 361                         linestart = 1;
 362                 } else {
 363                         linestart = 0;
 364                 }
 365         }
 366
 367         fprintf(emuLog, "%s", msg);
 368 }
 369
 370 void SysMessage(const char *fmt, ...) {
 371         va_list list;
 372         char msg[512];
 373
 374         va_start(list, fmt);
 375         vsprintf(msg, fmt, list);
 376         va_end(list);
 377
 378         if (msg[strlen(msg) - 1] == '\n')
 379                 msg[strlen(msg) - 1] = 0;
 380
 381         fprintf(stderr, "%s\n", msg);
 382 }
 383
 384 #if 1
 385 /* this is to avoid having to hack every plugin to stop using $HOME */
 386 char *getenv(const char *name)
 387 {
 388         static char ret[8] = ".";
 389
 390         if (name && strcmp(name, "HOME") == 0)
 391                 return ret;
 392
 393         return real_getenv(name);
 394 }
 395 #endif
 396
 397 /* we hook statically linked plugins here */
 398 static const char *builtin_plugins[] = {
 399         "builtin_gpu", "builtin_spu", "builtin_cdr", "builtin_pad"
 400 };
 401
 402 static const int builtin_plugin_ids[] = {
 403         PLUGIN_GPU, PLUGIN_SPU, PLUGIN_CDR, PLUGIN_PAD,
 404 };
 405
 406 void *SysLoadLibrary(const char *lib) {
 407         const char *tmp = strrchr(lib, '/');
 408         int i;
 409
 410         printf("dlopen %s\n", lib);
 411         if (tmp != NULL) {
 412                 tmp++;
 413                 for (i = 0; i < ARRAY_SIZE(builtin_plugins); i++)
 414                         if (strcmp(tmp, builtin_plugins[i]) == 0)
 415                                 return (void *)(long)(PLUGIN_DL_BASE + builtin_plugin_ids[i]);
 416         }
 417
 418         return dlopen(lib, RTLD_NOW);
 419 }
 420
 421 void *SysLoadSym(void *lib, const char *sym) {
 422         unsigned int plugid = (unsigned int)(long)lib;
 423
 424         if (PLUGIN_DL_BASE <= plugid && plugid < PLUGIN_DL_BASE + ARRAY_SIZE(builtin_plugins))
 425                 return plugin_link(plugid - PLUGIN_DL_BASE, sym);
 426
 427         return dlsym(lib, sym);
 428 }
 429
 430 const char *SysLibError() {
 431         return dlerror();
 432 }
 433
 434 void SysCloseLibrary(void *lib) {
 435         unsigned int plugid = (unsigned int)(long)lib;
 436
 437         if (PLUGIN_DL_BASE <= plugid && plugid < PLUGIN_DL_BASE + ARRAY_SIZE(builtin_plugins))
 438                 return;
 439
 440         dlclose(lib);
 441 }
 442
 443