mirror of
https://github.com/libretro/RetroArch.git
synced 2024-11-30 19:50:24 +00:00
765 lines
18 KiB
C
765 lines
18 KiB
C
/* RetroArch - A frontend for libretro.
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* Copyright (C) 2011-2017 - Daniel De Matteis
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* Copyright (C) 2014-2017 - Jean-André Santoni
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* Copyright (C) 2016-2017 - Brad Parker
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*
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* RetroArch is free software: you can redistribute it and/or modify it under the terms
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* of the GNU General Public License as published by the Free Software Found-
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* ation, either version 3 of the License, or (at your option) any later version.
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*
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* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with RetroArch.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <errno.h>
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#include <ctype.h>
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#include <string.h>
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#include <retro_miscellaneous.h>
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#include <compat/strcasestr.h>
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#include <compat/strl.h>
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#include <file/file_path.h>
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#include <retro_endianness.h>
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#include <streams/file_stream.h>
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#include <streams/interface_stream.h>
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#include <string/stdstring.h>
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#ifdef HAVE_CONFIG_H
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#include "../config.h"
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#endif
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#include "../database_info.h"
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#include "tasks_internal.h"
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#include "../driver.h"
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#include "../list_special.h"
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#include "../msg_hash.h"
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#include "../verbosity.h"
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#define MAGIC_LEN 17
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#define MAX_TOKEN_LEN 255
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#ifdef MSB_FIRST
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#define MODETEST_VAL 0x00ffffff
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#else
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#define MODETEST_VAL 0xffffff00
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#endif
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struct magic_entry
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{
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int32_t offset;
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const char *system_name;
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const char *magic;
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};
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static struct magic_entry MAGIC_NUMBERS[] = {
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{ 0, "ps1", "\x00\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\x00\x00\x02\x00\x02\x00"},
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{ 0x838840, "pcecd", "\x82\xb1\x82\xcc\x83\x76\x83\x8d\x83\x4f\x83\x89\x83\x80\x82\xcc\x92"},
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{ 0, "scd", "\x00\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\x00\x00\x02\x00\x01\x53"},
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{ 0, NULL, NULL}
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};
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static ssize_t get_token(intfstream_t *fd, char *token, size_t max_len)
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{
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char *c = token;
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ssize_t len = 0;
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int in_string = 0;
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while (1)
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{
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int rv = (int)intfstream_read(fd, c, 1);
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if (rv == 0)
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return 0;
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if (rv < 1)
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{
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switch (errno)
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{
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case EINTR:
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case EAGAIN:
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continue;
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default:
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return -errno;
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}
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}
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switch (*c)
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{
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case ' ':
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case '\t':
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case '\r':
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case '\n':
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if (c == token)
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continue;
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if (!in_string)
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{
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*c = '\0';
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return len;
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}
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break;
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case '\"':
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if (c == token)
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{
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in_string = 1;
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continue;
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}
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*c = '\0';
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return len;
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}
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len++;
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c++;
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if (len == (ssize_t)max_len)
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{
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*c = '\0';
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return len;
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}
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}
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}
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static int detect_ps1_game_sub(intfstream_t *fp,
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char *game_id, int sub_channel_mixed)
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{
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uint8_t* tmp;
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uint8_t* boot_file;
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int skip, frame_size, is_mode1, cd_sector;
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uint8_t buffer[2048 * 2];
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buffer[0] = '\0';
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is_mode1 = 0;
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if (intfstream_seek(fp, 0, SEEK_END) == -1)
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goto error;
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if (!sub_channel_mixed)
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{
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if (!(intfstream_tell(fp) & 0x7FF))
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{
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unsigned int mode_test = 0;
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if (intfstream_seek(fp, 0, SEEK_SET) == -1)
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goto error;
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intfstream_read(fp, &mode_test, 4);
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if (mode_test != MODETEST_VAL)
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is_mode1 = 1;
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}
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}
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skip = is_mode1? 0: 24;
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frame_size = sub_channel_mixed? 2448: is_mode1? 2048: 2352;
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if (intfstream_seek(fp, 156 + skip + 16 * frame_size, SEEK_SET) == -1)
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goto error;
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intfstream_read(fp, buffer, 6);
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cd_sector = buffer[2] | (buffer[3] << 8) | (buffer[4] << 16);
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if (intfstream_seek(fp, skip + cd_sector * frame_size, SEEK_SET) == -1)
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goto error;
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intfstream_read(fp, buffer, 2048 * 2);
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tmp = buffer;
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while (tmp < (buffer + 2048 * 2))
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{
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if (!*tmp)
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goto error;
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if (!strncasecmp((const char*)(tmp + 33), "SYSTEM.CNF;1", 12))
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break;
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tmp += *tmp;
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}
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if(tmp >= (buffer + 2048 * 2))
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goto error;
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cd_sector = tmp[2] | (tmp[3] << 8) | (tmp[4] << 16);
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if (intfstream_seek(fp, skip + cd_sector * frame_size, SEEK_SET) == -1)
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goto error;
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intfstream_read(fp, buffer, 256);
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buffer[256] = '\0';
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tmp = buffer;
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while(*tmp && strncasecmp((const char*)tmp, "boot", 4))
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tmp++;
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if(!*tmp)
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goto error;
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boot_file = tmp;
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while(*tmp && *tmp != '\n')
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{
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if((*tmp == '\\') || (*tmp == ':'))
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boot_file = tmp + 1;
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tmp++;
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}
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tmp = boot_file;
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*game_id++ = toupper(*tmp++);
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*game_id++ = toupper(*tmp++);
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*game_id++ = toupper(*tmp++);
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*game_id++ = toupper(*tmp++);
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*game_id++ = '-';
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if(!isalnum(*tmp))
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tmp++;
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while(isalnum(*tmp))
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{
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*game_id++ = *tmp++;
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if(*tmp == '.')
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tmp++;
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}
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*game_id = 0;
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return 1;
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error:
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return 0;
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}
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int detect_ps1_game(intfstream_t *fd, char *game_id)
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{
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if (detect_ps1_game_sub(fd, game_id, 0))
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return 1;
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return detect_ps1_game_sub(fd, game_id, 1);
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}
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int detect_psp_game(intfstream_t *fd, char *game_id)
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{
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unsigned pos;
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bool rv = false;
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for (pos = 0; pos < 100000; pos++)
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{
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intfstream_seek(fd, pos, SEEK_SET);
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if (intfstream_read(fd, game_id, 5) > 0)
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{
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game_id[5] = '\0';
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if (
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(string_is_equal(game_id, "ULES-"))
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|| (string_is_equal(game_id, "ULUS-"))
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|| (string_is_equal(game_id, "ULJS-"))
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|| (string_is_equal(game_id, "ULEM-"))
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|| (string_is_equal(game_id, "ULUM-"))
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|| (string_is_equal(game_id, "ULJM-"))
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|| (string_is_equal(game_id, "UCES-"))
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|| (string_is_equal(game_id, "UCUS-"))
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|| (string_is_equal(game_id, "UCJS-"))
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|| (string_is_equal(game_id, "UCAS-"))
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|| (string_is_equal(game_id, "NPEH-"))
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|| (string_is_equal(game_id, "NPUH-"))
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|| (string_is_equal(game_id, "NPJH-"))
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|| (string_is_equal(game_id, "NPEG-"))
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|| (string_is_equal(game_id, "NPUG-"))
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|| (string_is_equal(game_id, "NPJG-"))
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|| (string_is_equal(game_id, "NPHG-"))
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|| (string_is_equal(game_id, "NPEZ-"))
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|| (string_is_equal(game_id, "NPUZ-"))
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|| (string_is_equal(game_id, "NPJZ-"))
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)
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{
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intfstream_seek(fd, pos, SEEK_SET);
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if (intfstream_read(fd, game_id, 10) > 0)
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{
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#if 0
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game_id[4] = '-';
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game_id[8] = game_id[9];
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game_id[9] = game_id[10];
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#endif
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game_id[10] = '\0';
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rv = true;
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}
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break;
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}
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}
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else
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break;
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}
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return rv;
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}
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/**
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* Check for an ASCII serial in the first few bits of the ISO (Wii).
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*/
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int detect_serial_ascii_game(intfstream_t *fd, char *game_id)
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{
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unsigned pos;
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int numberOfAscii = 0;
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bool rv = false;
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for (pos = 0; pos < 10000; pos++)
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{
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intfstream_seek(fd, pos, SEEK_SET);
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if (intfstream_read(fd, game_id, 15) > 0)
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{
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unsigned i;
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game_id[15] = '\0';
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numberOfAscii = 0;
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/* Loop through until we run out of ASCII characters. */
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for (i = 0; i < 15; i++)
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{
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/* Is the given character ASCII? A-Z, 0-9, - */
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if (game_id[i] == 45 || (game_id[i] >= 48 && game_id[i] <= 57) || (game_id[i] >= 65 && game_id[i] <= 90))
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numberOfAscii++;
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else
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break;
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}
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/* If the length of the text is between 3 and 9 characters, it could be a serial. */
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if (numberOfAscii > 3 && numberOfAscii < 9)
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{
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/* Cut the string off, and return it as a valid serial. */
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game_id[numberOfAscii] = '\0';
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rv = true;
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break;
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}
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}
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}
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return rv;
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}
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int detect_system(intfstream_t *fd, const char **system_name)
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{
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int rv;
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char magic[MAGIC_LEN];
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int i;
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ssize_t read;
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RARCH_LOG("%s\n", msg_hash_to_str(MSG_COMPARING_WITH_KNOWN_MAGIC_NUMBERS));
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for (i = 0; MAGIC_NUMBERS[i].system_name != NULL; i++)
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{
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intfstream_seek(fd, MAGIC_NUMBERS[i].offset, SEEK_SET);
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read = intfstream_read(fd, magic, MAGIC_LEN);
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if (read < 0)
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{
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RARCH_LOG("Could not read data at offset %d: %s\n",
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MAGIC_NUMBERS[i].offset, strerror(errno));
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rv = -errno;
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goto clean;
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}
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if (read < MAGIC_LEN)
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continue;
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if (string_is_equal_fast(MAGIC_NUMBERS[i].magic, magic, MAGIC_LEN))
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{
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*system_name = MAGIC_NUMBERS[i].system_name;
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rv = 0;
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goto clean;
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}
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}
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intfstream_seek(fd, 0x8008, SEEK_SET);
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if (intfstream_read(fd, magic, 8) > 0)
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{
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magic[8] = '\0';
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if (!string_is_empty(magic) &&
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string_is_equal(magic, "PSP GAME"))
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{
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*system_name = "psp\0";
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rv = 0;
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goto clean;
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}
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}
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RARCH_LOG("%s\n", msg_hash_to_str(MSG_COULD_NOT_FIND_COMPATIBLE_SYSTEM));
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rv = -EINVAL;
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clean:
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return rv;
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}
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static ssize_t get_file_size(const char *path)
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{
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ssize_t rv;
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RFILE *fd = filestream_open(path, RFILE_MODE_READ, -1);
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if (fd == NULL) {
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return -1;
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}
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rv = filestream_get_size(fd);
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filestream_close(fd);
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return rv;
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}
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static bool update_cand(ssize_t *cand_index, ssize_t *last_index,
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size_t *largest, char *last_file, size_t *offset,
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size_t *size, char *track_path, size_t max_len)
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{
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if (*cand_index != -1)
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{
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if ((unsigned)(*last_index - *cand_index) > *largest)
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{
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*largest = *last_index - *cand_index;
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strlcpy(track_path, last_file, max_len);
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*offset = *cand_index;
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*size = *largest;
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*cand_index = -1;
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return true;
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}
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*cand_index = -1;
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}
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return false;
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}
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int cue_find_track(const char *cue_path, bool first,
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size_t *offset, size_t *size, char *track_path, size_t max_len)
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{
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int rv;
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intfstream_info_t info;
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char *tmp_token = (char*)malloc(MAX_TOKEN_LEN);
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char *last_file = (char*)malloc(PATH_MAX_LENGTH + 1);
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intfstream_t *fd = NULL;
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ssize_t last_index = -1;
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ssize_t cand_index = -1;
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int32_t cand_track = -1;
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int32_t track = 0;
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size_t largest = 0;
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ssize_t volatile file_size = -1;
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bool is_data = false;
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char *cue_dir = (char*)malloc(PATH_MAX_LENGTH);
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cue_dir[0] = '\0';
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fill_pathname_basedir(cue_dir, cue_path, PATH_MAX_LENGTH);
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info.type = INTFSTREAM_FILE;
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fd = (intfstream_t*)intfstream_init(&info);
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if (!fd)
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goto error;
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if (!intfstream_open(fd, cue_path, RFILE_MODE_READ, -1))
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{
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RARCH_LOG("Could not open CUE file '%s': %s\n", cue_path,
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strerror(errno));
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goto error;
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}
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RARCH_LOG("Parsing CUE file '%s'...\n", cue_path);
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tmp_token[0] = '\0';
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rv = -EINVAL;
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while (get_token(fd, tmp_token, MAX_TOKEN_LEN) > 0)
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{
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if (string_is_equal(tmp_token, "FILE"))
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{
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/* Set last index to last EOF */
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if (file_size != -1) {
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last_index = file_size;
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}
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/* We're changing files since the candidate, update it */
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if (update_cand(&cand_index, &last_index, &largest, last_file, offset,
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size, track_path, max_len)) {
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rv = 0;
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if (first) {
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goto clean;
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}
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}
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get_token(fd, tmp_token, MAX_TOKEN_LEN);
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fill_pathname_join(last_file, cue_dir, tmp_token, PATH_MAX_LENGTH);
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file_size = get_file_size(last_file);
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get_token(fd, tmp_token, MAX_TOKEN_LEN);
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}
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else if (string_is_equal(tmp_token, "TRACK"))
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{
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get_token(fd, tmp_token, MAX_TOKEN_LEN);
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get_token(fd, tmp_token, MAX_TOKEN_LEN);
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is_data = !string_is_equal(tmp_token, "AUDIO");
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++track;
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} else if (string_is_equal(tmp_token, "INDEX")) {
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int m, s, f;
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get_token(fd, tmp_token, MAX_TOKEN_LEN);
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get_token(fd, tmp_token, MAX_TOKEN_LEN);
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if (sscanf(tmp_token, "%02d:%02d:%02d", &m, &s, &f) < 3)
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{
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RARCH_LOG("Error parsing time stamp '%s'\n", tmp_token);
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goto error;
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}
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last_index = (size_t) (((m * 60 + s) * 75) + f) * 2352;
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/* If we've changed tracks since the candidate, update it */
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if (cand_track != -1 && track != cand_track &&
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update_cand(&cand_index, &last_index, &largest, last_file, offset,
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size, track_path, max_len)) {
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rv = 0;
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if (first) {
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goto clean;
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}
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}
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if (!is_data) {
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continue;
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}
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if (cand_index == -1) {
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cand_index = last_index;
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cand_track = track;
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}
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}
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}
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if (file_size != -1) {
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last_index = file_size;
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}
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if (update_cand(&cand_index, &last_index, &largest, last_file, offset,
|
|
size, track_path, max_len)) {
|
|
rv = 0;
|
|
}
|
|
|
|
clean:
|
|
free(cue_dir);
|
|
free(tmp_token);
|
|
free(last_file);
|
|
intfstream_close(fd);
|
|
free(fd);
|
|
return rv;
|
|
|
|
error:
|
|
free(cue_dir);
|
|
free(tmp_token);
|
|
free(last_file);
|
|
if (fd)
|
|
{
|
|
intfstream_close(fd);
|
|
free(fd);
|
|
}
|
|
return -errno;
|
|
}
|
|
|
|
bool cue_next_file(intfstream_t *fd, const char *cue_path, char *path, size_t max_len)
|
|
{
|
|
bool rv = false;
|
|
char *tmp_token = (char*)malloc(MAX_TOKEN_LEN);
|
|
char *cue_dir = (char*)malloc(PATH_MAX_LENGTH);
|
|
cue_dir[0] = '\0';
|
|
|
|
fill_pathname_basedir(cue_dir, cue_path, PATH_MAX_LENGTH);
|
|
|
|
tmp_token[0] = '\0';
|
|
|
|
while (get_token(fd, tmp_token, MAX_TOKEN_LEN) > 0)
|
|
{
|
|
if (string_is_equal(tmp_token, "FILE"))
|
|
{
|
|
get_token(fd, tmp_token, MAX_TOKEN_LEN);
|
|
fill_pathname_join(path, cue_dir, tmp_token, max_len);
|
|
rv = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
free(cue_dir);
|
|
free(tmp_token);
|
|
return rv;
|
|
}
|
|
|
|
int gdi_find_track(const char *gdi_path, bool first,
|
|
char *track_path, size_t max_len)
|
|
{
|
|
int rv;
|
|
intfstream_info_t info;
|
|
char *tmp_token = (char*)malloc(MAX_TOKEN_LEN);
|
|
intfstream_t *fd = NULL;
|
|
size_t largest = 0;
|
|
int size = -1;
|
|
int mode = -1;
|
|
ssize_t file_size = -1;
|
|
|
|
info.type = INTFSTREAM_FILE;
|
|
|
|
fd = (intfstream_t*)intfstream_init(&info);
|
|
|
|
if (!fd)
|
|
goto error;
|
|
|
|
if (!intfstream_open(fd, gdi_path, RFILE_MODE_READ, -1))
|
|
{
|
|
RARCH_LOG("Could not open GDI file '%s': %s\n", gdi_path,
|
|
strerror(errno));
|
|
goto error;
|
|
}
|
|
|
|
RARCH_LOG("Parsing GDI file '%s'...\n", gdi_path);
|
|
|
|
tmp_token[0] = '\0';
|
|
|
|
rv = -EINVAL;
|
|
|
|
/* Skip track count */
|
|
get_token(fd, tmp_token, MAX_TOKEN_LEN);
|
|
|
|
/* Track number */
|
|
while (get_token(fd, tmp_token, MAX_TOKEN_LEN) > 0)
|
|
{
|
|
/* Offset */
|
|
if (get_token(fd, tmp_token, MAX_TOKEN_LEN) <= 0)
|
|
{
|
|
errno = EINVAL;
|
|
goto error;
|
|
}
|
|
|
|
/* Mode */
|
|
if (get_token(fd, tmp_token, MAX_TOKEN_LEN) <= 0)
|
|
{
|
|
errno = EINVAL;
|
|
goto error;
|
|
}
|
|
mode = atoi(tmp_token);
|
|
|
|
/* Sector size */
|
|
if (get_token(fd, tmp_token, MAX_TOKEN_LEN) <= 0)
|
|
{
|
|
errno = EINVAL;
|
|
goto error;
|
|
}
|
|
size = atoi(tmp_token);
|
|
|
|
/* File name */
|
|
if (get_token(fd, tmp_token, MAX_TOKEN_LEN) <= 0)
|
|
{
|
|
errno = EINVAL;
|
|
goto error;
|
|
}
|
|
|
|
/* Check for data track */
|
|
if (!(mode == 0 && size == 2352))
|
|
{
|
|
char *last_file = (char*)malloc(PATH_MAX_LENGTH + 1);
|
|
char *gdi_dir = (char*)malloc(PATH_MAX_LENGTH);
|
|
|
|
gdi_dir[0] = '\0';
|
|
|
|
fill_pathname_basedir(gdi_dir, gdi_path, PATH_MAX_LENGTH);
|
|
|
|
fill_pathname_join(last_file,
|
|
gdi_dir, tmp_token, PATH_MAX_LENGTH);
|
|
file_size = get_file_size(last_file);
|
|
if (file_size < 0)
|
|
{
|
|
free(gdi_dir);
|
|
free(last_file);
|
|
goto error;
|
|
}
|
|
|
|
if ((unsigned)file_size > largest)
|
|
{
|
|
strlcpy(track_path, last_file, max_len);
|
|
rv = 0;
|
|
largest = file_size;
|
|
if (first)
|
|
{
|
|
free(gdi_dir);
|
|
free(last_file);
|
|
goto clean;
|
|
}
|
|
}
|
|
free(gdi_dir);
|
|
free(last_file);
|
|
}
|
|
|
|
/* Disc offset (not used?) */
|
|
if (get_token(fd, tmp_token, MAX_TOKEN_LEN) <= 0)
|
|
{
|
|
errno = EINVAL;
|
|
goto error;
|
|
}
|
|
}
|
|
|
|
clean:
|
|
free(tmp_token);
|
|
intfstream_close(fd);
|
|
free(fd);
|
|
return rv;
|
|
|
|
error:
|
|
free(tmp_token);
|
|
if (fd)
|
|
{
|
|
intfstream_close(fd);
|
|
free(fd);
|
|
}
|
|
return -errno;
|
|
}
|
|
|
|
bool gdi_next_file(intfstream_t *fd, const char *gdi_path,
|
|
char *path, size_t max_len)
|
|
{
|
|
bool rv = false;
|
|
char *tmp_token = (char*)malloc(MAX_TOKEN_LEN);
|
|
ssize_t offset = -1;
|
|
|
|
tmp_token[0] = '\0';
|
|
|
|
/* Skip initial track count */
|
|
offset = intfstream_tell(fd);
|
|
if (offset == 0)
|
|
get_token(fd, tmp_token, MAX_TOKEN_LEN);
|
|
|
|
/* Track number */
|
|
get_token(fd, tmp_token, MAX_TOKEN_LEN);
|
|
|
|
/* Offset */
|
|
get_token(fd, tmp_token, MAX_TOKEN_LEN);
|
|
|
|
/* Mode */
|
|
get_token(fd, tmp_token, MAX_TOKEN_LEN);
|
|
|
|
/* Sector size */
|
|
get_token(fd, tmp_token, MAX_TOKEN_LEN);
|
|
|
|
/* File name */
|
|
if (get_token(fd, tmp_token, MAX_TOKEN_LEN) > 0)
|
|
{
|
|
char *gdi_dir = (char*)malloc(PATH_MAX_LENGTH);
|
|
|
|
gdi_dir[0] = '\0';
|
|
|
|
fill_pathname_basedir(gdi_dir, gdi_path, PATH_MAX_LENGTH);
|
|
|
|
fill_pathname_join(path, gdi_dir, tmp_token, max_len);
|
|
rv = true;
|
|
|
|
/* Disc offset */
|
|
get_token(fd, tmp_token, MAX_TOKEN_LEN);
|
|
|
|
free(gdi_dir);
|
|
}
|
|
|
|
free(tmp_token);
|
|
return rv;
|
|
}
|