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
  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                 pcnt_hook_plugins();
 196
 197                 if (OpenPlugins() == -1) {
 198                         return 1;
 199                 }
 200
 201                 SysReset();
 202                 CheckCdrom();
 203
 204                 if (file[0] != '\0') {
 205                         Load(file);
 206                 } else {
 207                         if (runcd) {
 208                                 if (LoadCdrom() == -1) {
 209                                         ClosePlugins();
 210                                         printf(_("Could not load CD-ROM!\n"));
 211                                         return -1;
 212                                 }
 213                         }
 214                 }
 215
 216                 // If a state has been specified, then load that
 217                 if (loadst) {
 218                         StatesC = loadst - 1;
 219                         char *state_filename = get_state_filename(StatesC);
 220                         LoadState(state_filename);
 221                         free(state_filename);
 222                 }
 223
 224                 psxCpu->Execute();
 225         }
 226
 227         return 0;
 228 }
 229
 230 int SysInit() {
 231         if (EmuInit() == -1) {
 232                 printf("PSX emulator couldn't be initialized.\n");
 233                 return -1;
 234         }
 235
 236         LoadMcds(Config.Mcd1, Config.Mcd2);     /* TODO Do we need to have this here, or in the calling main() function?? */
 237
 238         if (Config.Debug) {
 239                 StartDebugger();
 240         }
 241
 242         return 0;
 243 }
 244
 245 void SysRunGui() {
 246         printf("SysRunGui\n");
 247 }
 248
 249 void StartGui() {
 250         printf("StartGui\n");
 251 }
 252
 253 void SysReset() {
 254         EmuReset();
 255 }
 256
 257 void SysClose() {
 258         EmuShutdown();
 259         ReleasePlugins();
 260
 261         StopDebugger();
 262
 263         if (emuLog != NULL) fclose(emuLog);
 264 }
 265
 266 void SysUpdate() {
 267         PADhandleKey(PAD1_keypressed());
 268         PADhandleKey(PAD2_keypressed());
 269 }
 270
 271 void UpdateMenuSlots() {
 272 }
 273
 274 void OnFile_Exit() {
 275         printf("OnFile_Exit\n");
 276         exit(0);
 277 }
 278
 279 void state_save(gchar *state_filename) {
 280         char Text[MAXPATHLEN + 20];
 281
 282         GPU_updateLace();
 283
 284         if (SaveState(state_filename) == 0)
 285                 sprintf(Text, _("Saved state %s."), state_filename);
 286         else
 287                 sprintf(Text, _("Error saving state %s!"), state_filename);
 288
 289         GPU_displayText(Text);
 290 }
 291
 292 void state_load(gchar *state_filename) {
 293         int ret;
 294         char Text[MAXPATHLEN + 20];
 295         FILE *fp;
 296
 297         // check if the state file actually exists
 298         fp = fopen(state_filename, "rb");
 299         if (fp == NULL) {
 300                 // file does not exist
 301                 return;
 302         }
 303
 304         fclose(fp);
 305
 306         ret = CheckState(state_filename);
 307
 308         if (ret == 0) {
 309                 SysReset();
 310                 ret = LoadState(state_filename);
 311         }
 312
 313         if (ret == 0) {
 314                 // Check the CD-ROM is valid
 315                 if (CheckCdrom() == -1) {
 316                         ClosePlugins();
 317                         SysRunGui();
 318                         return;
 319                 }
 320
 321                 sprintf(Text, _("Loaded state %s."), state_filename);
 322         } else {
 323                 sprintf(Text, _("Error loading state %s!"), state_filename);
 324         }
 325         GPU_displayText(Text);
 326 }
 327
 328 char *get_state_filename(int i) {
 329         char SStateFile[256];
 330         char trimlabel[33];
 331         int j;
 332
 333         strncpy(trimlabel, CdromLabel, 32);
 334         trimlabel[32] = 0;
 335         for (j = 31; j >= 0; j--)
 336                 if (trimlabel[j] == ' ')
 337                         trimlabel[j] = 0;
 338                 else
 339                         continue;
 340
 341         snprintf(SStateFile, sizeof(SStateFile), "." STATES_DIR "%.32s-%.9s.%3.3d",
 342                 trimlabel, CdromId, i);
 343
 344         return strdup(SStateFile);
 345 }
 346
 347 void SysPrintf(const char *fmt, ...) {
 348         va_list list;
 349         char msg[512];
 350
 351         va_start(list, fmt);
 352         vsprintf(msg, fmt, list);
 353         va_end(list);
 354
 355         fprintf(emuLog, "%s", msg);
 356 }
 357
 358 void SysMessage(const char *fmt, ...) {
 359         va_list list;
 360         char msg[512];
 361
 362         va_start(list, fmt);
 363         vsprintf(msg, fmt, list);
 364         va_end(list);
 365
 366         if (msg[strlen(msg) - 1] == '\n')
 367                 msg[strlen(msg) - 1] = 0;
 368
 369         fprintf(stderr, "%s\n", msg);
 370 }
 371
 372 #if 1
 373 /* this is to avoid having to hack every plugin to stop using $HOME */
 374 char *getenv(const char *name)
 375 {
 376         static char ret[8] = ".";
 377
 378         if (name && strcmp(name, "HOME") == 0)
 379                 return ret;
 380
 381         return real_getenv(name);
 382 }
 383 #endif
 384
 385 /* we hook statically linked plugins here */
 386 static const char *builtin_plugins[] = {
 387         "builtin_gpu", "builtin_spu", "builtin_cdr", "builtin_pad"
 388 };
 389
 390 static const int builtin_plugin_ids[] = {
 391         PLUGIN_GPU, PLUGIN_SPU, PLUGIN_CDR, PLUGIN_PAD,
 392 };
 393
 394 void *SysLoadLibrary(const char *lib) {
 395         const char *tmp = strrchr(lib, '/');
 396         int i;
 397
 398         printf("dlopen %s\n", lib);
 399         if (tmp != NULL) {
 400                 tmp++;
 401                 for (i = 0; i < ARRAY_SIZE(builtin_plugins); i++)
 402                         if (strcmp(tmp, builtin_plugins[i]) == 0)
 403                                 return (void *)(long)(PLUGIN_DL_BASE + builtin_plugin_ids[i]);
 404         }
 405
 406         return dlopen(lib, RTLD_NOW);
 407 }
 408
 409 void *SysLoadSym(void *lib, const char *sym) {
 410         unsigned int plugid = (unsigned int)(long)lib;
 411
 412         if (PLUGIN_DL_BASE <= plugid && plugid < PLUGIN_DL_BASE + ARRAY_SIZE(builtin_plugins))
 413                 return plugin_link(plugid - PLUGIN_DL_BASE, sym);
 414
 415         return dlsym(lib, sym);
 416 }
 417
 418 const char *SysLibError() {
 419         return dlerror();
 420 }
 421
 422 void SysCloseLibrary(void *lib) {
 423         unsigned int plugid = (unsigned int)(long)lib;
 424
 425         if (PLUGIN_DL_BASE <= plugid && plugid < PLUGIN_DL_BASE + ARRAY_SIZE(builtin_plugins))
 426                 return;
 427
 428         dlclose(lib);
 429 }
 430
 431