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 "pcnt.h"
  18 #include "../gui/Linux.h"
  19 #include "../libpcsxcore/misc.h"
  20
  21 int UseGui;
  22 static char *(*real_getenv)(const char *name);
  23
  24 static void make_path(char *buf, size_t size, const char *dir, const char *fname)
  25 {
  26         if (fname)
  27                 snprintf(buf, size, ".%s%s", dir, fname);
  28         else
  29                 snprintf(buf, size, ".%s", dir);
  30 }
  31 #define MAKE_PATH(buf, dir, fname) \
  32         make_path(buf, sizeof(buf), dir, fname)
  33
  34 static void create_profile_dir(const char *directory) {
  35         char path[MAXPATHLEN];
  36
  37         MAKE_PATH(path, directory, NULL);
  38         mkdir(path, S_IRWXU | S_IRWXG);
  39 }
  40
  41 static void CheckSubDir() {
  42         // make sure that ~/.pcsx exists
  43         create_profile_dir(PCSX_DOT_DIR);
  44
  45         create_profile_dir(BIOS_DIR);
  46         create_profile_dir(MEMCARD_DIR);
  47         create_profile_dir(STATES_DIR);
  48         create_profile_dir(PLUGINS_DIR);
  49         create_profile_dir(PLUGINS_CFG_DIR);
  50         create_profile_dir(CHEATS_DIR);
  51         create_profile_dir(PATCHES_DIR);
  52 }
  53
  54 static void CreateMemcard(char *filename, char *conf_mcd) {
  55         struct stat buf;
  56
  57         make_path(conf_mcd, MAXPATHLEN, MEMCARD_DIR, filename);
  58
  59         /* Only create a memory card if an existing one does not exist */
  60         if (stat(conf_mcd, &buf) == -1) {
  61                 SysPrintf(_("Creating memory card: %s\n"), conf_mcd);
  62                 CreateMcd(conf_mcd);
  63         }
  64 }
  65
  66 int main(int argc, char *argv[])
  67 {
  68         char file[MAXPATHLEN] = "";
  69         char path[MAXPATHLEN];
  70         int runcd = 0;
  71         int loadst = 0;
  72         void *tmp;
  73         int i;
  74
  75         tmp = dlopen("/lib/libdl.so.2", RTLD_LAZY);
  76         if (tmp != NULL)
  77                 real_getenv = dlsym(tmp, "getenv");
  78         if (real_getenv == NULL) {
  79                 fprintf(stderr, "%s\n", dlerror());
  80                 return 1;
  81         }
  82         dlclose(tmp);
  83
  84         // what is the name of the config file?
  85         // it may be redefined by -cfg on the command line
  86         strcpy(cfgfile_basename, "pcsx.cfg");
  87
  88         emuLog = stdout;
  89         SetIsoFile(NULL);
  90         Config.PsxOut = 1;
  91
  92         // read command line options
  93         for (i = 1; i < argc; i++) {
  94                      if (!strcmp(argv[i], "-psxout")) Config.PsxOut = 1;
  95                 else if (!strcmp(argv[i], "-load")) loadst = atol(argv[++i]);
  96                 else if (!strcmp(argv[i], "-cfg")) {
  97                         if (i+1 >= argc) break;
  98                         strncpy(cfgfile_basename, argv[++i], MAXPATHLEN-100);   /* TODO buffer overruns */
  99                         printf("Using config file %s.\n", cfgfile_basename);
 100                 }
 101                 else if (!strcmp(argv[i], "-cdfile")) {
 102                         char isofilename[MAXPATHLEN];
 103
 104                         if (i+1 >= argc) break;
 105                         strncpy(isofilename, argv[++i], MAXPATHLEN);
 106                         if (isofilename[0] != '/') {
 107                                 getcwd(path, MAXPATHLEN);
 108                                 if (strlen(path) + strlen(isofilename) + 1 < MAXPATHLEN) {
 109                                         strcat(path, "/");
 110                                         strcat(path, isofilename);
 111                                         strcpy(isofilename, path);
 112                                 } else
 113                                         isofilename[0] = 0;
 114                         }
 115
 116                         SetIsoFile(isofilename);
 117                         runcd = 1;
 118                 }
 119                 else if (!strcmp(argv[i], "-h") ||
 120                          !strcmp(argv[i], "-help") ||
 121                          !strcmp(argv[i], "--help")) {
 122                          printf(PACKAGE_NAME " " PACKAGE_VERSION "\n");
 123                          printf("%s\n", _(
 124                                                         " pcsx [options] [file]\n"
 125                                                         "\toptions:\n"
 126                                                         "\t-cdfile FILE\tRuns a CD image file\n"
 127                                                         "\t-nogui\t\tDon't open the GTK GUI\n"
 128                                                         "\t-cfg FILE\tLoads desired configuration file (default: ~/.pcsx/pcsx.cfg)\n"
 129                                                         "\t-psxout\t\tEnable PSX output\n"
 130                                                         "\t-load STATENUM\tLoads savestate STATENUM (1-5)\n"
 131                                                         "\t-h -help\tDisplay this message\n"
 132                                                         "\tfile\t\tLoads file\n"));
 133                          return 0;
 134                 } else {
 135                         strncpy(file, argv[i], MAXPATHLEN);
 136                         if (file[0] != '/') {
 137                                 getcwd(path, MAXPATHLEN);
 138                                 if (strlen(path) + strlen(file) + 1 < MAXPATHLEN) {
 139                                         strcat(path, "/");
 140                                         strcat(path, file);
 141                                         strcpy(file, path);
 142                                 } else
 143                                         file[0] = 0;
 144                         }
 145                 }
 146         }
 147
 148         memset(&Config, 0, sizeof(PcsxConfig));
 149         strcpy(Config.Net, "Disabled");
 150
 151         CheckSubDir();
 152 //      ScanAllPlugins();
 153
 154         strcpy(Config.Bios, "HLE");
 155         strcpy(Config.BiosDir, "./");
 156
 157         strcpy(Config.PluginsDir, "plugins");
 158         strcpy(Config.Gpu, "builtin_gpu");
 159         strcpy(Config.Spu, "builtin_spu");
 160         strcpy(Config.Cdr, "builtin_cdr");
 161         strcpy(Config.Pad1, "builtin_pad");
 162         strcpy(Config.Pad2, "builtin_pad");
 163
 164         // try to load config
 165         // if the config file doesn't exist
 166         if (LoadConfig() == -1) {
 167                 // Uh oh, no config file found, use some defaults
 168                 Config.PsxAuto = 1;
 169
 170                 // create & load default memcards if they don't exist
 171                 CreateMemcard("card1.mcd", Config.Mcd1);
 172                 CreateMemcard("card2.mcd", Config.Mcd2);
 173
 174                 LoadMcds(Config.Mcd1, Config.Mcd2);
 175
 176                 SaveConfig();
 177         }
 178
 179         snprintf(Config.PatchesDir, sizeof(Config.PatchesDir), "." PATCHES_DIR);
 180 /*
 181         // switch to plugin dotdir
 182         // this lets plugins work without modification!
 183         gchar *plugin_default_dir = g_build_filename(getenv("HOME"), PLUGINS_DIR, NULL);
 184         chdir(plugin_default_dir);
 185         g_free(plugin_default_dir);
 186 */
 187         if (SysInit() == -1) return 1;
 188
 189         // if !gui
 190         {
 191                 // the following only occurs if the gui isn't started
 192                 if (LoadPlugins() == -1) {
 193                         SysMessage("Failed loading plugins!");
 194                         return 1;
 195                 }
 196                 pcnt_hook_plugins();
 197
 198                 if (OpenPlugins() == -1) {
 199                         return 1;
 200                 }
 201
 202                 SysReset();
 203                 CheckCdrom();
 204
 205                 if (file[0] != '\0') {
 206                         Load(file);
 207                 } else {
 208                         if (runcd) {
 209                                 if (LoadCdrom() == -1) {
 210                                         ClosePlugins();
 211                                         printf(_("Could not load CD-ROM!\n"));
 212                                         return -1;
 213                                 }
 214                         }
 215                 }
 216
 217                 // If a state has been specified, then load that
 218                 if (loadst) {
 219                         StatesC = loadst - 1;
 220                         char *state_filename = get_state_filename(StatesC);
 221                         LoadState(state_filename);
 222                         free(state_filename);
 223                 }
 224
 225                 psxCpu->Execute();
 226         }
 227
 228         return 0;
 229 }
 230
 231 int SysInit() {
 232         if (EmuInit() == -1) {
 233                 printf("PSX emulator couldn't be initialized.\n");
 234                 return -1;
 235         }
 236
 237         LoadMcds(Config.Mcd1, Config.Mcd2);     /* TODO Do we need to have this here, or in the calling main() function?? */
 238
 239         if (Config.Debug) {
 240                 StartDebugger();
 241         }
 242
 243         return 0;
 244 }
 245
 246 void SysRunGui() {
 247         printf("SysRunGui\n");
 248 }
 249
 250 void StartGui() {
 251         printf("StartGui\n");
 252 }
 253
 254 void SysReset() {
 255         EmuReset();
 256 }
 257
 258 void SysClose() {
 259         EmuShutdown();
 260         ReleasePlugins();
 261
 262         StopDebugger();
 263
 264         if (emuLog != NULL) fclose(emuLog);
 265 }
 266
 267 void SysUpdate() {
 268         PADhandleKey(PAD1_keypressed());
 269         PADhandleKey(PAD2_keypressed());
 270 }
 271
 272 void UpdateMenuSlots() {
 273 }
 274
 275 void OnFile_Exit() {
 276         printf("OnFile_Exit\n");
 277         exit(0);
 278 }
 279
 280 void state_save(gchar *state_filename) {
 281         char Text[MAXPATHLEN + 20];
 282
 283         GPU_updateLace();
 284
 285         if (SaveState(state_filename) == 0)
 286                 sprintf(Text, _("Saved state %s."), state_filename);
 287         else
 288                 sprintf(Text, _("Error saving state %s!"), state_filename);
 289
 290         GPU_displayText(Text);
 291 }
 292
 293 void state_load(gchar *state_filename) {
 294         int ret;
 295         char Text[MAXPATHLEN + 20];
 296         FILE *fp;
 297
 298         // check if the state file actually exists
 299         fp = fopen(state_filename, "rb");
 300         if (fp == NULL) {
 301                 // file does not exist
 302                 return;
 303         }
 304
 305         fclose(fp);
 306
 307         ret = CheckState(state_filename);
 308
 309         if (ret == 0) {
 310                 SysReset();
 311                 ret = LoadState(state_filename);
 312         }
 313
 314         if (ret == 0) {
 315                 // Check the CD-ROM is valid
 316                 if (CheckCdrom() == -1) {
 317                         ClosePlugins();
 318                         SysRunGui();
 319                         return;
 320                 }
 321
 322                 sprintf(Text, _("Loaded state %s."), state_filename);
 323         } else {
 324                 sprintf(Text, _("Error loading state %s!"), state_filename);
 325         }
 326         GPU_displayText(Text);
 327 }
 328
 329 char *get_state_filename(int i) {
 330         char SStateFile[256];
 331         char trimlabel[33];
 332         int j;
 333
 334         strncpy(trimlabel, CdromLabel, 32);
 335         trimlabel[32] = 0;
 336         for (j = 31; j >= 0; j--)
 337                 if (trimlabel[j] == ' ')
 338                         trimlabel[j] = 0;
 339                 else
 340                         continue;
 341
 342         snprintf(SStateFile, sizeof(SStateFile), "." STATES_DIR "%.32s-%.9s.%3.3d",
 343                 trimlabel, CdromId, i);
 344
 345         return strdup(SStateFile);
 346 }
 347
 348 void SysPrintf(const char *fmt, ...) {
 349         va_list list;
 350         char msg[512];
 351
 352         va_start(list, fmt);
 353         vsprintf(msg, fmt, list);
 354         va_end(list);
 355
 356         if (Config.PsxOut) {
 357                 static char linestart = 1;
 358                 int l = strlen(msg);
 359
 360                 printf(linestart ? " * %s" : "%s", msg);
 361
 362                 if (l > 0 && msg[l - 1] == '\n') {
 363                         linestart = 1;
 364                 } else {
 365                         linestart = 0;
 366                 }
 367         }
 368
 369         fprintf(emuLog, "%s", msg);
 370 }
 371
 372 void SysMessage(const char *fmt, ...) {
 373         va_list list;
 374         char msg[512];
 375
 376         va_start(list, fmt);
 377         vsprintf(msg, fmt, list);
 378         va_end(list);
 379
 380         if (msg[strlen(msg) - 1] == '\n')
 381                 msg[strlen(msg) - 1] = 0;
 382
 383         fprintf(stderr, "%s\n", msg);
 384 }
 385
 386 #if 1
 387 /* this is to avoid having to hack every plugin to stop using $HOME */
 388 char *getenv(const char *name)
 389 {
 390         static char ret[8] = ".";
 391
 392         if (name && strcmp(name, "HOME") == 0)
 393                 return ret;
 394
 395         return real_getenv(name);
 396 }
 397 #endif
 398
 399 /* we hook statically linked plugins here */
 400 static const char *builtin_plugins[] = {
 401         "builtin_gpu", "builtin_spu", "builtin_cdr", "builtin_pad"
 402 };
 403
 404 static const int builtin_plugin_ids[] = {
 405         PLUGIN_GPU, PLUGIN_SPU, PLUGIN_CDR, PLUGIN_PAD,
 406 };
 407
 408 void *SysLoadLibrary(const char *lib) {
 409         const char *tmp = strrchr(lib, '/');
 410         int i;
 411
 412         printf("dlopen %s\n", lib);
 413         if (tmp != NULL) {
 414                 tmp++;
 415                 for (i = 0; i < ARRAY_SIZE(builtin_plugins); i++)
 416                         if (strcmp(tmp, builtin_plugins[i]) == 0)
 417                                 return (void *)(long)(PLUGIN_DL_BASE + builtin_plugin_ids[i]);
 418         }
 419
 420         return dlopen(lib, RTLD_NOW);
 421 }
 422
 423 void *SysLoadSym(void *lib, const char *sym) {
 424         unsigned int plugid = (unsigned int)(long)lib;
 425
 426         if (PLUGIN_DL_BASE <= plugid && plugid < PLUGIN_DL_BASE + ARRAY_SIZE(builtin_plugins))
 427                 return plugin_link(plugid - PLUGIN_DL_BASE, sym);
 428
 429         return dlsym(lib, sym);
 430 }
 431
 432 const char *SysLibError() {
 433         return dlerror();
 434 }
 435
 436 void SysCloseLibrary(void *lib) {
 437         unsigned int plugid = (unsigned int)(long)lib;
 438
 439         if (PLUGIN_DL_BASE <= plugid && plugid < PLUGIN_DL_BASE + ARRAY_SIZE(builtin_plugins))
 440                 return;
 441
 442         dlclose(lib);
 443 }
 444
 445