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Diffstat (limited to 'utils/jz4740_tools/IHFSsplit.c')
| -rw-r--r-- | utils/jz4740_tools/IHFSsplit.c | 195 |
1 files changed, 195 insertions, 0 deletions
diff --git a/utils/jz4740_tools/IHFSsplit.c b/utils/jz4740_tools/IHFSsplit.c new file mode 100644 index 0000000000..1f90a50007 --- /dev/null +++ b/utils/jz4740_tools/IHFSsplit.c @@ -0,0 +1,195 @@ +/*************************************************************************** + * __________ __ ___. + * Open \______ \ ____ ____ | | _\_ |__ _______ ___ + * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / + * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < + * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ + * \/ \/ \/ \/ \/ + * $Id$ + * + * Copyright (C) 2008 by William Poetra Yoga Hadisoeseno + * + * This program 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 Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY + * KIND, either express or implied. + * + ****************************************************************************/ + +#include <stdio.h> +#include <string.h> +#include <stdlib.h> +#include <stdint.h> +#include <libgen.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <unistd.h> +#include <fcntl.h> + +void usage() +{ + fprintf(stderr, "usage: IHFSsplit <ihfs_img> <output_dir>\n"); + exit(1); +} + +typedef struct { + uint32_t signature; + uint32_t fslen; + uint32_t unknown1; + uint32_t unknown2; + char timestamp[12]; + uint32_t numfiles; + char zeros[476]; + uint32_t marker; +} ihfs_header_t; + +#define MAX_FILES 2048 +#define MAX_IHFS_PATH 56 + +typedef struct { + struct { + char fullpath[MAX_IHFS_PATH]; + uint32_t sector; + uint32_t length; + } files[MAX_FILES]; +} ihfs_file_table_t; + +#define SECTOR_SIZE 512 + +int ihfs_sanity(const int ihfs_img) +{ + struct stat statbuf; + ihfs_header_t ihfs_hdr; + + printf("starting sanity check for IHFS image...\n"); + + lseek(ihfs_img, 0, SEEK_SET); + read(ihfs_img, &ihfs_hdr, sizeof (ihfs_hdr)); + + printf(" checking for IHFS signature...\n"); + if (ihfs_hdr.signature != 0x49484653) + return 1; + + printf(" checking for FS length...\n"); + fstat(ihfs_img, &statbuf); + if (ihfs_hdr.fslen * SECTOR_SIZE != statbuf.st_size) + return 1; + + printf(" checking for unknown value 1...\n"); + if (ihfs_hdr.unknown1 != 0x00000004) + return 1; + + printf(" checking for unknown value 2...\n"); + if (ihfs_hdr.unknown2 != 0xfffff000) + return 1; + + printf(" checking for number of files...\n"); + if (ihfs_hdr.numfiles > MAX_FILES) + return 1; + + printf(" checking for marker...\n"); + if (ihfs_hdr.marker != 0x55aa55aa) + return 1; + + return 0; +} + +void mkdir_p(const char *path) +{ + char *dir; + + dir = dirname(strdup(path)); + if (strchr(dir, '/')) + mkdir_p(dir); + + mkdir(dir, 0755); +} + +#define BUF_SIZE 4096 + +void outputfile(const char *outpath, const int ihfs_img, const int offset, const int length) +{ + int outfd; + int i, rem; + char buf[BUF_SIZE]; + + lseek(ihfs_img, offset, SEEK_SET); + + outfd = creat(outpath, 0644); + + for (i = 0; i < length / BUF_SIZE; ++i) { + read(ihfs_img, buf, BUF_SIZE); + write(outfd, buf, BUF_SIZE); + } + rem = length - i * BUF_SIZE; + if (rem > 0) { + read(ihfs_img, buf, rem); + write(outfd, buf, rem); + } + + close(outfd); +} + +int main(int argc, char **argv) +{ + struct stat statbuf; + int ihfs_img; + ihfs_header_t ihfs_hdr; + ihfs_file_table_t ihfs_ftbl; + int i, j; + char *outpath, *base_path, ihfs_path[MAX_IHFS_PATH+1]; + + /* check the arguments */ + + if (argc != 3) + usage(); + + stat(argv[1], &statbuf); + if (!S_ISREG(statbuf.st_mode)) + usage(); + + stat(argv[2], &statbuf); + if (!S_ISDIR(statbuf.st_mode)) + usage(); + + /* check the file, then split */ + + ihfs_img = open(argv[1], O_RDONLY); + + if (ihfs_sanity(ihfs_img)) { + printf("Non-IHFS format!\n"); + return 1; + } else + printf("sanity check OK\n"); + + lseek(ihfs_img, 0, SEEK_SET); + read(ihfs_img, &ihfs_hdr, sizeof (ihfs_hdr)); + lseek(ihfs_img, 4 * SECTOR_SIZE, SEEK_SET); + read(ihfs_img, &ihfs_ftbl, sizeof (ihfs_ftbl)); + + base_path = strdup(argv[2]); + outpath = malloc(strlen(base_path) + 1 + MAX_IHFS_PATH + 1); + for (i = 0; i < ihfs_hdr.numfiles; ++i) { + printf("\n"); + printf("pathname: %s\n", ihfs_ftbl.files[i].fullpath); + printf("starts at sector %d, length is %d bytes\n", ihfs_ftbl.files[i].sector, ihfs_ftbl.files[i].length); + + strncpy(ihfs_path, ihfs_ftbl.files[i].fullpath, MAX_IHFS_PATH); + ihfs_path[MAX_IHFS_PATH] = '\0'; + for (j = 0; j < strlen(ihfs_path); ++j) + if (ihfs_path[j] == '\\') + ihfs_path[j] = '/'; + + sprintf(outpath, "%s/%s", base_path, ihfs_path); + mkdir_p(outpath); + outputfile(outpath, ihfs_img, ihfs_ftbl.files[i].sector * SECTOR_SIZE, ihfs_ftbl.files[i].length); + } + free(outpath); + + close(ihfs_img); + + return 0; +}
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