Mercurial > sdl-ios-xcode
view test/testcdrom.c @ 4355:9b464226e541 SDL-1.2
Fixed bug #855
Ludwig Nussel 2009-10-18 06:31:52 PDT
an mprotect call was added to fix bug 528. However that results in a buffer
that allows writing and code execution. Ie the no-execute security features of
modern operating systems are defeated this way. Two mprotect calls are needed.
One to make the buffer executable but not writeable when done and another one
to make the buffer writeable again if the content needs to be changed.
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Sun, 18 Oct 2009 17:31:37 +0000 |
parents | b2b476a4a73c |
children | 782fd950bd46 c121d94672cb |
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/* Test the SDL CD-ROM audio functions */ #include <stdlib.h> #include <stdio.h> #include <string.h> #include <ctype.h> #include "SDL.h" /* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */ static void quit(int rc) { SDL_Quit(); exit(rc); } static void PrintStatus(int driveindex, SDL_CD *cdrom) { CDstatus status; char *status_str; status = SDL_CDStatus(cdrom); switch (status) { case CD_TRAYEMPTY: status_str = "tray empty"; break; case CD_STOPPED: status_str = "stopped"; break; case CD_PLAYING: status_str = "playing"; break; case CD_PAUSED: status_str = "paused"; break; case CD_ERROR: status_str = "error state"; break; } printf("Drive %d status: %s\n", driveindex, status_str); if ( status >= CD_PLAYING ) { int m, s, f; FRAMES_TO_MSF(cdrom->cur_frame, &m, &s, &f); printf("Currently playing track %d, %d:%2.2d\n", cdrom->track[cdrom->cur_track].id, m, s); } } static void ListTracks(SDL_CD *cdrom) { int i; int m, s, f; char* trtype; SDL_CDStatus(cdrom); printf("Drive tracks: %d\n", cdrom->numtracks); for ( i=0; i<cdrom->numtracks; ++i ) { FRAMES_TO_MSF(cdrom->track[i].length, &m, &s, &f); if ( f > 0 ) ++s; switch(cdrom->track[i].type) { case SDL_AUDIO_TRACK: trtype="audio"; break; case SDL_DATA_TRACK: trtype="data"; break; default: trtype="unknown"; break; } printf("\tTrack (index %d) %d: %d:%2.2d / %d [%s track]\n", i, cdrom->track[i].id, m, s, cdrom->track[i].length, trtype); } } static void PrintUsage(char *argv0) { fprintf(stderr, "Usage: %s [drive#] [command] [command] ...\n", argv0); fprintf(stderr, "Where 'command' is one of:\n"); fprintf(stderr, " -status\n"); fprintf(stderr, " -list\n"); fprintf(stderr, " -play [first_track] [first_frame] [num_tracks] [num_frames]\n"); fprintf(stderr, " -pause\n"); fprintf(stderr, " -resume\n"); fprintf(stderr, " -stop\n"); fprintf(stderr, " -eject\n"); fprintf(stderr, " -sleep <milliseconds>\n"); } int main(int argc, char *argv[]) { int drive; int i; SDL_CD *cdrom; /* Initialize SDL first */ if ( SDL_Init(SDL_INIT_CDROM) < 0 ) { fprintf(stderr, "Couldn't initialize SDL: %s\n",SDL_GetError()); return(1); } /* Find out how many CD-ROM drives are connected to the system */ if ( SDL_CDNumDrives() == 0 ) { printf("No CD-ROM devices detected\n"); quit(0); } printf("Drives available: %d\n", SDL_CDNumDrives()); for ( i=0; i<SDL_CDNumDrives(); ++i ) { printf("Drive %d: \"%s\"\n", i, SDL_CDName(i)); } /* Open the CD-ROM */ drive = 0; i=1; if ( argv[i] && isdigit(argv[i][0]) ) { drive = atoi(argv[i++]); } cdrom = SDL_CDOpen(drive); if ( cdrom == NULL ) { fprintf(stderr, "Couldn't open drive %d: %s\n", drive, SDL_GetError()); quit(2); } #ifdef TEST_NULLCD cdrom = NULL; #endif /* Find out which function to perform */ for ( ; argv[i]; ++i ) { if ( strcmp(argv[i], "-status") == 0 ) { /* PrintStatus(drive, cdrom); */ } else if ( strcmp(argv[i], "-list") == 0 ) { ListTracks(cdrom); } else if ( strcmp(argv[i], "-play") == 0 ) { int strack, sframe; int ntrack, nframe; strack = 0; if ( argv[i+1] && isdigit(argv[i+1][0]) ) { strack = atoi(argv[++i]); } sframe = 0; if ( argv[i+1] && isdigit(argv[i+1][0]) ) { sframe = atoi(argv[++i]); } ntrack = 0; if ( argv[i+1] && isdigit(argv[i+1][0]) ) { ntrack = atoi(argv[++i]); } nframe = 0; if ( argv[i+1] && isdigit(argv[i+1][0]) ) { nframe = atoi(argv[++i]); } if ( CD_INDRIVE(SDL_CDStatus(cdrom)) ) { if ( SDL_CDPlayTracks(cdrom, strack, sframe, ntrack, nframe) < 0 ) { fprintf(stderr, "Couldn't play tracks %d/%d for %d/%d: %s\n", strack, sframe, ntrack, nframe, SDL_GetError()); } } else { fprintf(stderr, "No CD in drive!\n"); } } else if ( strcmp(argv[i], "-pause") == 0 ) { if ( SDL_CDPause(cdrom) < 0 ) { fprintf(stderr, "Couldn't pause CD: %s\n", SDL_GetError()); } } else if ( strcmp(argv[i], "-resume") == 0 ) { if ( SDL_CDResume(cdrom) < 0 ) { fprintf(stderr, "Couldn't resume CD: %s\n", SDL_GetError()); } } else if ( strcmp(argv[i], "-stop") == 0 ) { if ( SDL_CDStop(cdrom) < 0 ) { fprintf(stderr, "Couldn't eject CD: %s\n", SDL_GetError()); } } else if ( strcmp(argv[i], "-eject") == 0 ) { if ( SDL_CDEject(cdrom) < 0 ) { fprintf(stderr, "Couldn't eject CD: %s\n", SDL_GetError()); } } else if ( (strcmp(argv[i], "-sleep") == 0) && (argv[i+1] && isdigit(argv[i+1][0])) ) { SDL_Delay(atoi(argv[++i])); printf("Delayed %d milliseconds\n", atoi(argv[i])); } else { PrintUsage(argv[0]); SDL_CDClose(cdrom); quit(1); } } PrintStatus(drive, cdrom); SDL_CDClose(cdrom); SDL_Quit(); return(0); }