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                 tmp = dlopen("/lib32/libdl.so.2", RTLD_LAZY);
  78         if (tmp != NULL)
  79                 real_getenv = dlsym(tmp, "getenv");
  80         if (real_getenv == NULL) {
  81                 fprintf(stderr, "%s\n", dlerror());
  82                 return 1;
  83         }
  84         dlclose(tmp);
  85
  86         // what is the name of the config file?
  87         // it may be redefined by -cfg on the command line
  88         strcpy(cfgfile_basename, "pcsx.cfg");
  89
  90         emuLog = stdout;
  91         SetIsoFile(NULL);
  92
  93         // read command line options
  94         for (i = 1; i < argc; i++) {
  95                      if (!strcmp(argv[i], "-psxout")) Config.PsxOut = 1;
  96                 else if (!strcmp(argv[i], "-load")) loadst = atol(argv[++i]);
  97                 else if (!strcmp(argv[i], "-cfg")) {
  98                         if (i+1 >= argc) break;
  99                         strncpy(cfgfile_basename, argv[++i], MAXPATHLEN-100);   /* TODO buffer overruns */
 100                         printf("Using config file %s.\n", cfgfile_basename);
 101                 }
 102                 else if (!strcmp(argv[i], "-cdfile")) {
 103                         char isofilename[MAXPATHLEN];
 104
 105                         if (i+1 >= argc) break;
 106                         strncpy(isofilename, argv[++i], MAXPATHLEN);
 107                         if (isofilename[0] != '/') {
 108                                 getcwd(path, MAXPATHLEN);
 109                                 if (strlen(path) + strlen(isofilename) + 1 < MAXPATHLEN) {
 110                                         strcat(path, "/");
 111                                         strcat(path, isofilename);
 112                                         strcpy(isofilename, path);
 113                                 } else
 114                                         isofilename[0] = 0;
 115                         }
 116
 117                         SetIsoFile(isofilename);
 118                         runcd = 1;
 119                 }
 120                 else if (!strcmp(argv[i], "-h") ||
 121                          !strcmp(argv[i], "-help") ||
 122                          !strcmp(argv[i], "--help")) {
 123                          printf(PACKAGE_NAME " " PACKAGE_VERSION "\n");
 124                          printf("%s\n", _(
 125                                                         " pcsx [options] [file]\n"
 126                                                         "\toptions:\n"
 127                                                         "\t-cdfile FILE\tRuns a CD image file\n"
 128                                                         "\t-nogui\t\tDon't open the GTK GUI\n"
 129                                                         "\t-cfg FILE\tLoads desired configuration file (default: ~/.pcsx/pcsx.cfg)\n"
 130                                                         "\t-psxout\t\tEnable PSX output\n"
 131                                                         "\t-load STATENUM\tLoads savestate STATENUM (1-5)\n"
 132                                                         "\t-h -help\tDisplay this message\n"
 133                                                         "\tfile\t\tLoads file\n"));
 134                          return 0;
 135                 } else {
 136                         strncpy(file, argv[i], MAXPATHLEN);
 137                         if (file[0] != '/') {
 138                                 getcwd(path, MAXPATHLEN);
 139                                 if (strlen(path) + strlen(file) + 1 < MAXPATHLEN) {
 140                                         strcat(path, "/");
 141                                         strcat(path, file);
 142                                         strcpy(file, path);
 143                                 } else
 144                                         file[0] = 0;
 145                         }
 146                 }
 147         }
 148
 149         memset(&Config, 0, sizeof(PcsxConfig));
 150         strcpy(Config.Net, "Disabled");
 151
 152         CheckSubDir();
 153 //      ScanAllPlugins();
 154
 155         strcpy(Config.Bios, "HLE");
 156         strcpy(Config.BiosDir, "./");
 157
 158         strcpy(Config.PluginsDir, "plugins");
 159         strcpy(Config.Gpu, "builtin_gpu");
 160         strcpy(Config.Spu, "builtin_spu");
 161         strcpy(Config.Cdr, "builtin_cdr");
 162         strcpy(Config.Pad1, "builtin_pad");
 163         strcpy(Config.Pad2, "builtin_pad");
 164
 165         // try to load config
 166         // if the config file doesn't exist
 167         if (LoadConfig() == -1) {
 168                 // Uh oh, no config file found, use some defaults
 169                 Config.PsxAuto = 1;
 170
 171                 // create & load default memcards if they don't exist
 172                 CreateMemcard("card1.mcd", Config.Mcd1);
 173                 CreateMemcard("card2.mcd", Config.Mcd2);
 174
 175                 LoadMcds(Config.Mcd1, Config.Mcd2);
 176
 177                 SaveConfig();
 178         }
 179
 180         snprintf(Config.PatchesDir, sizeof(Config.PatchesDir), "." PATCHES_DIR);
 181 /*
 182         // switch to plugin dotdir
 183         // this lets plugins work without modification!
 184         gchar *plugin_default_dir = g_build_filename(getenv("HOME"), PLUGINS_DIR, NULL);
 185         chdir(plugin_default_dir);
 186         g_free(plugin_default_dir);
 187 */
 188         if (SysInit() == -1) return 1;
 189
 190         // if !gui
 191         {
 192                 // the following only occurs if the gui isn't started
 193                 if (LoadPlugins() == -1) {
 194                         SysMessage("Failed loading plugins!");
 195                         return 1;
 196                 }
 197                 pcnt_hook_plugins();
 198
 199                 if (OpenPlugins() == -1) {
 200                         return 1;
 201                 }
 202
 203                 SysReset();
 204                 CheckCdrom();
 205
 206                 if (file[0] != '\0') {
 207                         Load(file);
 208                 } else {
 209                         if (runcd) {
 210                                 if (LoadCdrom() == -1) {
 211                                         ClosePlugins();
 212                                         printf(_("Could not load CD-ROM!\n"));
 213                                         return -1;
 214                                 }
 215                         }
 216                 }
 217
 218                 // If a state has been specified, then load that
 219                 if (loadst) {
 220                         StatesC = loadst - 1;
 221                         char *state_filename = get_state_filename(StatesC);
 222                         int ret = LoadState(state_filename);
 223                         printf("%s state %s\n", ret ? "failed to load" : "loaded", state_filename);
 224                         free(state_filename);
 225                 }
 226
 227                 psxCpu->Execute();
 228         }
 229
 230         return 0;
 231 }
 232
 233 int SysInit() {
 234         if (EmuInit() == -1) {
 235                 printf("PSX emulator couldn't be initialized.\n");
 236                 return -1;
 237         }
 238
 239         LoadMcds(Config.Mcd1, Config.Mcd2);     /* TODO Do we need to have this here, or in the calling main() function?? */
 240
 241         if (Config.Debug) {
 242                 StartDebugger();
 243         }
 244
 245         return 0;
 246 }
 247
 248 void SysRunGui() {
 249         printf("SysRunGui\n");
 250 }
 251
 252 void StartGui() {
 253         printf("StartGui\n");
 254 }
 255
 256 void SysReset() {
 257         EmuReset();
 258 }
 259
 260 void SysClose() {
 261         EmuShutdown();
 262         ReleasePlugins();
 263
 264         StopDebugger();
 265
 266         if (emuLog != NULL) fclose(emuLog);
 267 }
 268
 269 void SysUpdate() {
 270         PADhandleKey(PAD1_keypressed());
 271         PADhandleKey(PAD2_keypressed());
 272 }
 273
 274 void UpdateMenuSlots() {
 275 }
 276
 277 void OnFile_Exit() {
 278         printf("OnFile_Exit\n");
 279         exit(0);
 280 }
 281
 282 void state_save(gchar *state_filename) {
 283         char Text[MAXPATHLEN + 20];
 284
 285         GPU_updateLace();
 286
 287         if (SaveState(state_filename) == 0)
 288                 sprintf(Text, _("Saved state %s."), state_filename);
 289         else
 290                 sprintf(Text, _("Error saving state %s!"), state_filename);
 291
 292         GPU_displayText(Text);
 293 }
 294
 295 void state_load(gchar *state_filename) {
 296         int ret;
 297         char Text[MAXPATHLEN + 20];
 298         FILE *fp;
 299
 300         // check if the state file actually exists
 301         fp = fopen(state_filename, "rb");
 302         if (fp == NULL) {
 303                 // file does not exist
 304                 return;
 305         }
 306
 307         fclose(fp);
 308
 309         ret = CheckState(state_filename);
 310
 311         if (ret == 0) {
 312                 SysReset();
 313                 ret = LoadState(state_filename);
 314         }
 315
 316         if (ret == 0) {
 317                 // Check the CD-ROM is valid
 318                 if (CheckCdrom() == -1) {
 319                         ClosePlugins();
 320                         SysRunGui();
 321                         return;
 322                 }
 323
 324                 sprintf(Text, _("Loaded state %s."), state_filename);
 325         } else {
 326                 sprintf(Text, _("Error loading state %s!"), state_filename);
 327         }
 328         GPU_displayText(Text);
 329 }
 330
 331 char *get_state_filename(int i) {
 332         char SStateFile[256];
 333         char trimlabel[33];
 334         int j;
 335
 336         strncpy(trimlabel, CdromLabel, 32);
 337         trimlabel[32] = 0;
 338         for (j = 31; j >= 0; j--)
 339                 if (trimlabel[j] == ' ')
 340                         trimlabel[j] = 0;
 341                 else
 342                         continue;
 343
 344         snprintf(SStateFile, sizeof(SStateFile), "." STATES_DIR "%.32s-%.9s.%3.3d",
 345                 trimlabel, CdromId, i);
 346
 347         return strdup(SStateFile);
 348 }
 349
 350 void SysPrintf(const char *fmt, ...) {
 351         va_list list;
 352         char msg[512];
 353
 354         va_start(list, fmt);
 355         vsprintf(msg, fmt, list);
 356         va_end(list);
 357
 358         fprintf(emuLog, "%s", msg);
 359 }
 360
 361 void SysMessage(const char *fmt, ...) {
 362         va_list list;
 363         char msg[512];
 364
 365         va_start(list, fmt);
 366         vsprintf(msg, fmt, list);
 367         va_end(list);
 368
 369         if (msg[strlen(msg) - 1] == '\n')
 370                 msg[strlen(msg) - 1] = 0;
 371
 372         fprintf(stderr, "%s\n", msg);
 373 }
 374
 375 #if 1
 376 /* this is to avoid having to hack every plugin to stop using $HOME */
 377 char *getenv(const char *name)
 378 {
 379         static char ret[8] = ".";
 380
 381         if (name && strcmp(name, "HOME") == 0)
 382                 return ret;
 383
 384         return real_getenv(name);
 385 }
 386 #endif
 387
 388 /* we hook statically linked plugins here */
 389 static const char *builtin_plugins[] = {
 390         "builtin_gpu", "builtin_spu", "builtin_cdr", "builtin_pad"
 391 };
 392
 393 static const int builtin_plugin_ids[] = {
 394         PLUGIN_GPU, PLUGIN_SPU, PLUGIN_CDR, PLUGIN_PAD,
 395 };
 396
 397 void *SysLoadLibrary(const char *lib) {
 398         const char *tmp = strrchr(lib, '/');
 399         int i;
 400
 401         printf("dlopen %s\n", lib);
 402         if (tmp != NULL) {
 403                 tmp++;
 404                 for (i = 0; i < ARRAY_SIZE(builtin_plugins); i++)
 405                         if (strcmp(tmp, builtin_plugins[i]) == 0)
 406                                 return (void *)(long)(PLUGIN_DL_BASE + builtin_plugin_ids[i]);
 407         }
 408
 409         return dlopen(lib, RTLD_NOW);
 410 }
 411
 412 void *SysLoadSym(void *lib, const char *sym) {
 413         unsigned int plugid = (unsigned int)(long)lib;
 414
 415         if (PLUGIN_DL_BASE <= plugid && plugid < PLUGIN_DL_BASE + ARRAY_SIZE(builtin_plugins))
 416                 return plugin_link(plugid - PLUGIN_DL_BASE, sym);
 417
 418         return dlsym(lib, sym);
 419 }
 420
 421 const char *SysLibError() {
 422         return dlerror();
 423 }
 424
 425 void SysCloseLibrary(void *lib) {
 426         unsigned int plugid = (unsigned int)(long)lib;
 427
 428         if (PLUGIN_DL_BASE <= plugid && plugid < PLUGIN_DL_BASE + ARRAY_SIZE(builtin_plugins))
 429                 return;
 430
 431         dlclose(lib);
 432 }
 433
 434