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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