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https://github.com/libretro/RetroArch
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use PSX.EXE if SYSTEM.CNF cannot be found
This commit is contained in:
Jamiras
parent
0d284c42bc
commit
3b0cbc1e41
@ -1215,18 +1215,139 @@ enum
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RCHEEVOS_PCE_CD_MD5 = -17
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};
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static int rcheevos_hash_psx(rcheevos_coro_t* coro)
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{
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char exe_name_buffer[64];
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size_t exe_name_size;
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char* exe_name = NULL;
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uint8_t* ptr = NULL;
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const char* end = NULL;
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char* scan = NULL;
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char buffer[2048];
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int success = 0;
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size_t to_read = 0;
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/* find the data track - it should be the first one */
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coro->track = cdfs_open_data_track(coro->path);
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if (!coro->track)
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{
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CHEEVOS_LOG(RCHEEVOS_TAG "could not open CD\n");
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return false;
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}
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/* open the SYSTEM.CNF file and find the BOOT= record */
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if (cdfs_open_file(&coro->cdfp, coro->track, "SYSTEM.CNF"))
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{
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cdfs_read_file(&coro->cdfp, buffer, sizeof(buffer));
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for (scan = buffer; scan < &buffer[sizeof(buffer)] && *scan; ++scan)
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{
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if (strncmp(scan, "BOOT", 4) == 0)
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{
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exe_name = scan + 4;
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while (isspace(*exe_name))
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++exe_name;
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if (*exe_name == '=')
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{
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++exe_name;
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while (isspace(*exe_name))
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++exe_name;
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if (strncmp(exe_name, "cdrom:", 6) == 0)
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exe_name += 6;
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if (*exe_name == '\\')
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++exe_name;
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break;
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}
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}
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while (*scan && *scan != '\n')
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++scan;
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}
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cdfs_close_file(&coro->cdfp);
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if (exe_name)
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{
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scan = exe_name;
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while (!isspace(*scan) && *scan != ';')
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++scan;
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*scan = '\0';
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}
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}
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else
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{
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/* no SYSTEM.CNF, check for a PSX.EXE */
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exe_name = "PSX.EXE";
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}
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if (!exe_name || !cdfs_open_file(&coro->cdfp, coro->track, exe_name))
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{
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CHEEVOS_LOG(RCHEEVOS_TAG "could not locate primary executable\n");
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}
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else
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{
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/* store the exe name, we're about to overwrite buffer */
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strncpy(exe_name_buffer, exe_name, sizeof(exe_name_buffer));
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exe_name_buffer[sizeof(exe_name_buffer) - 1] = '\0';
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exe_name_size = strlen(exe_name_buffer);
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/* read the first sector of the executable */
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cdfs_read_file(&coro->cdfp, buffer, sizeof(buffer));
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/* the PSX-E header specifies the executable size as a 4-byte value 28 bytes into the header, which doesn't
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* include the header itself. We want to include the header in the hash, so append another 2048 to that value.
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* ASSERT: this results in the same value as coro->cdfp->size */
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coro->count = 2048 + (((uint8_t)buffer[28 + 3] << 24) | ((uint8_t)buffer[28 + 2] << 16) |
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((uint8_t)buffer[28 + 1] << 8) | (uint8_t)buffer[28]);
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if (coro->count <= CHEEVOS_MB(16)) /* sanity check */
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{
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/* there's a few games that use a singular engine and only differ via their data files.
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* luckily, they have unique serial numbers, and use the serial number as the boot file in the
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* standard way. include the boot executable name in the hash */
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coro->count += exe_name_size;
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free(coro->data);
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coro->data = (uint8_t*)malloc(coro->count);
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memcpy(coro->data, exe_name_buffer, exe_name_size);
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coro->len = exe_name_size;
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memcpy((uint8_t*)coro->data + coro->len, buffer, sizeof(buffer));
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coro->len += sizeof(buffer);
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while (coro->len < coro->count)
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{
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to_read = coro->count - coro->len;
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if (to_read > 2048)
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to_read = 2048;
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cdfs_read_file(&coro->cdfp, (uint8_t*)coro->data + coro->len, to_read);
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coro->len += to_read;
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};
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success = 1;
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}
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cdfs_close_file(&coro->cdfp);
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}
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cdfs_close_track(coro->track);
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coro->track = NULL;
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return success;
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}
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static int rcheevos_iterate(rcheevos_coro_t* coro)
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{
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const int snes_header_len = 0x200;
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const int lynx_header_len = 0x40;
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ssize_t num_read = 0;
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size_t to_read = 4096;
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uint8_t *ptr = NULL;
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const char *end = NULL;
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size_t exe_name_size = 0;
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char exe_name_buffer[64];
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char* exe_name = NULL;
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char* scan = NULL;
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uint8_t* ptr = NULL;
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const char* end = NULL;
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char buffer[2048];
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static const uint32_t snes_exts[] =
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@ -1766,120 +1887,13 @@ found:
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*************************************************************************/
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CORO_SUB(RCHEEVOS_PSX_MD5)
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{
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MD5_Init(&coro->md5);
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/* find the data track - it should be the first one */
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coro->track = cdfs_open_data_track(coro->path);
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if (coro->track)
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if (rcheevos_hash_psx(coro))
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{
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/* open the SYSTEM.CNF file and find the BOOT= record */
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if (cdfs_open_file(&coro->cdfp, coro->track, "SYSTEM.CNF"))
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{
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cdfs_read_file(&coro->cdfp, buffer, sizeof(buffer));
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MD5_Init(&coro->md5);
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CORO_GOSUB(RCHEEVOS_EVAL_MD5);
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MD5_Final(coro->hash, &coro->md5);
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for (scan = buffer; scan < &buffer[sizeof(buffer)] && *scan; ++scan)
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{
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if (strncmp(scan, "BOOT", 4) == 0)
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{
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exe_name = scan + 4;
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while (isspace(*exe_name))
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++exe_name;
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if (*exe_name == '=')
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{
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++exe_name;
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while (isspace(*exe_name))
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++exe_name;
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if (strncmp(exe_name, "cdrom:", 6) == 0)
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exe_name += 6;
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if (*exe_name == '\\')
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++exe_name;
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break;
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}
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}
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while (*scan && *scan != '\n')
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++scan;
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}
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cdfs_close_file(&coro->cdfp);
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if (exe_name)
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{
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scan = exe_name;
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while (*scan != '\n' && *scan != '\r' && *scan != ';' && *scan != ' ')
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++scan;
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*scan = '\0';
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exe_name_size = scan - exe_name;
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if (exe_name_size < sizeof(exe_name_buffer))
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strcpy(exe_name_buffer, exe_name);
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/* open the file pointed to by the BOOT= record */
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if (exe_name_buffer[0] && cdfs_open_file(&coro->cdfp, coro->track, exe_name_buffer))
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{
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cdfs_read_file(&coro->cdfp, buffer, sizeof(buffer));
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/* the PSX-E header specifies the executable size as a 4-byte value 28 bytes into the header, which doesn't
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* include the header itself. We want to include the header in the hash, so append another 2048 to that value.
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* ASSERT: this results in the same value as coro->cdfp->size */
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coro->count = 2048 + (((uint8_t)buffer[28 + 3] << 24) | ((uint8_t)buffer[28 + 2] << 16) |
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((uint8_t)buffer[28 + 1] << 8) | (uint8_t)buffer[28]);
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if (coro->count > CHEEVOS_MB(16)) /* sanity check */
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{
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cdfs_close_file(&coro->cdfp);
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}
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else
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{
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/* there's a few games that are use a singular engine and only differ via their data files.
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* luckily, they have unique serial numbers, and use the serial number as the boot file in the
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* standard way. include the boot executable name in the hash */
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coro->count += exe_name_size;
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free(coro->data);
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coro->data = (uint8_t*)malloc(coro->count);
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memcpy(coro->data, exe_name_buffer, exe_name_size);
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coro->len = exe_name_size;
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memcpy((uint8_t*)coro->data + coro->len, buffer, sizeof(buffer));
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coro->len += sizeof(buffer);
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while (coro->len < coro->count)
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{
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CORO_YIELD();
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to_read = coro->count - coro->len;
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if (to_read > 2048)
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to_read = 2048;
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cdfs_read_file(&coro->cdfp, (uint8_t*)coro->data + coro->len, to_read);
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coro->len += to_read;
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};
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CORO_GOSUB(RCHEEVOS_EVAL_MD5);
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MD5_Final(coro->hash, &coro->md5);
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cdfs_close_file(&coro->cdfp);
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cdfs_close_track(coro->track);
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coro->track = NULL;
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CORO_GOTO(RCHEEVOS_GET_GAMEID);
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}
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}
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}
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}
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CHEEVOS_LOG(RCHEEVOS_TAG "could not locate primary executable\n", coro->gameid);
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cdfs_close_track(coro->track);
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coro->track = NULL;
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}
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else
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{
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CHEEVOS_LOG(RCHEEVOS_TAG "could not open CD\n", coro->gameid);
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CORO_GOTO(RCHEEVOS_GET_GAMEID);
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}
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coro->gameid = 0;
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