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RetroArch/tasks/task_database_cue.c

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