summaryrefslogtreecommitdiffstats
path: root/utils/imxtools/sbtools/rsrc.c
diff options
context:
space:
mode:
Diffstat (limited to 'utils/imxtools/sbtools/rsrc.c')
-rw-r--r--utils/imxtools/sbtools/rsrc.c227
1 files changed, 227 insertions, 0 deletions
diff --git a/utils/imxtools/sbtools/rsrc.c b/utils/imxtools/sbtools/rsrc.c
new file mode 100644
index 0000000000..da3c418d2c
--- /dev/null
+++ b/utils/imxtools/sbtools/rsrc.c
@@ -0,0 +1,227 @@
+/***************************************************************************
+ * __________ __ ___.
+ * Open \______ \ ____ ____ | | _\_ |__ _______ ___
+ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
+ * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
+ * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
+ * \/ \/ \/ \/ \/
+ * $Id$
+ *
+ * Copyright (C) 2012 Amaury Pouly
+ *
+ * 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 <time.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include "misc.h"
+#include "crypto.h"
+#include "rsrc.h"
+
+const char crypto_key[16] = "SanDiskSlotRadi";
+
+static void rsrc_crypt(void *buf, int size)
+{
+ if(size % 16)
+ printf("Size must be a multiple of 16 !\n");
+ uint8_t *p = buf;
+ for(int i = 0; i < size; i+= 16, p += 16)
+ {
+ for(int j = 0; j < 16; j++)
+ p[j] ^= crypto_key[j];
+ }
+}
+
+enum rsrc_error_t rsrc_write_file(struct rsrc_file_t *rsrc, const char *filename)
+{
+ FILE *f = fopen(filename, "wb");
+ if(f == NULL)
+ return RSRC_OPEN_ERROR;
+ fwrite(rsrc->data, 1, rsrc->size, f);
+ fclose(f);
+ return RSRC_SUCCESS;
+}
+
+struct rsrc_file_t *rsrc_read_file(const char *filename, void *u,
+ rsrc_color_printf cprintf, enum rsrc_error_t *err)
+{
+ return rsrc_read_file_ex(filename, 0, -1, u, cprintf, err);
+}
+
+struct rsrc_file_t *rsrc_read_file_ex(const char *filename, size_t offset, size_t size, void *u,
+ rsrc_color_printf cprintf, enum rsrc_error_t *err)
+{
+ #define fatal(e, ...) \
+ do { if(err) *err = e; \
+ cprintf(u, true, GREY, __VA_ARGS__); \
+ free(buf); \
+ return NULL; } while(0)
+
+ FILE *f = fopen(filename, "rb");
+ void *buf = NULL;
+ if(f == NULL)
+ fatal(RSRC_OPEN_ERROR, "Cannot open file for reading\n");
+ fseek(f, 0, SEEK_END);
+ size_t read_size = ftell(f);
+ fseek(f, offset, SEEK_SET);
+ if(size != (size_t)-1)
+ read_size = size;
+ buf = xmalloc(read_size);
+ if(fread(buf, read_size, 1, f) != 1)
+ {
+ fclose(f);
+ fatal(RSRC_READ_ERROR, "Cannot read file\n");
+ }
+ fclose(f);
+
+ struct rsrc_file_t *ret = rsrc_read_memory(buf, read_size, u, cprintf, err);
+ free(buf);
+ return ret;
+
+ #undef fatal
+}
+
+static const char *rsrc_table_entry_type_str(int type)
+{
+ switch(type)
+ {
+ case RSRC_TYPE_NONE: return "empty";
+ case RSRC_TYPE_NESTED: return "nested";
+ case RSRC_TYPE_IMAGE: return "image";
+ case RSRC_TYPE_VALUE: return "value";
+ case RSRC_TYPE_AUDIO: return "audio";
+ case RSRC_TYPE_DATA: return "data";
+ default: return "unknown";
+ }
+}
+
+static bool read_entries(void *buf, int filesize, void *u,
+ rsrc_color_printf cprintf, enum rsrc_error_t *err,
+ int offset, uint32_t base_index, int level, char *prefix)
+{
+ #define printf(c, ...) cprintf(u, false, c, __VA_ARGS__)
+ #define fatal(e, ...) \
+ do { if(err) *err = e; \
+ cprintf(u, true, GREY, __VA_ARGS__); \
+ return e; } while(0)
+
+ if(offset >= filesize)
+ fatal(RSRC_FORMAT_ERROR, "Out of bounds at off=%x base=%x level=%d\n ouch\n");
+ if(level < 0)
+ fatal(RSRC_FORMAT_ERROR, "Out of levels at off=%x base=%x level=%d\n aie\n");
+ for(int i = 0; i < 256; i++)
+ {
+ uint32_t te = *(uint32_t *)(buf + offset + 4 * i);
+ if(RSRC_TABLE_ENTRY_TYPE(te) == RSRC_TYPE_NONE)
+ continue;
+ uint32_t sz = 0;
+ if(RSRC_TABLE_ENTRY_TYPE(te) == RSRC_TYPE_VALUE)
+ sz = 2;
+ else if(RSRC_TABLE_ENTRY_TYPE(te) == RSRC_TYPE_NESTED)
+ sz = 4 * 256;
+ else
+ sz = *(uint32_t *)(buf + RSRC_TABLE_ENTRY_OFFSET(te));
+
+ uint32_t index = base_index | i << (level * 8);
+ printf(OFF, "%s+-%s%#08x %s[%s]%s[size=%#x]\n", prefix, YELLOW, index, BLUE,
+ rsrc_table_entry_type_str(RSRC_TABLE_ENTRY_TYPE(te)),
+ GREEN, sz);
+
+ if(RSRC_TABLE_ENTRY_TYPE(te) == RSRC_TYPE_NESTED)
+ {
+ char *p = prefix + strlen(prefix);
+ sprintf(p, "%s| ", RED);
+
+ bool ok = read_entries(buf, filesize, u, cprintf, err,
+ RSRC_TABLE_ENTRY_OFFSET(te), index,
+ level - 1, prefix);
+ if(!ok)
+ return false;
+ *p = 0;
+ }
+ }
+
+ return true;
+ #undef printf
+ #undef fatal
+}
+
+struct rsrc_file_t *rsrc_read_memory(void *_buf, size_t filesize, void *u,
+ rsrc_color_printf cprintf, enum rsrc_error_t *err)
+{
+ struct rsrc_file_t *rsrc_file = NULL;
+ uint8_t *buf = _buf;
+
+ #define printf(c, ...) cprintf(u, false, c, __VA_ARGS__)
+ #define fatal(e, ...) \
+ do { if(err) *err = e; \
+ cprintf(u, true, GREY, __VA_ARGS__); \
+ rsrc_free(rsrc_file); \
+ return NULL; } while(0)
+ #define print_hex(c, p, len, nl) \
+ do { printf(c, ""); print_hex(p, len, nl); } while(0)
+
+ rsrc_file = xmalloc(sizeof(struct rsrc_file_t));
+ memset(rsrc_file, 0, sizeof(struct rsrc_file_t));
+
+ /* There is a padding sector at the beginning of the file with a RSRC string.
+ * It is unclear if this is a signature since no code I've disassembled
+ * actually checks it. Allow use of -force to bypass. */
+ if(memcmp(buf + 20, "RSRC", 4) != 0)
+ {
+ if(g_force)
+ printf(GREY, "Missing RSRC signature\n");
+ else
+ fatal(RSRC_FORMAT_ERROR, "Missing RSRC signature\n");
+ }
+
+ printf(BLUE, "Entries\n");
+ char prefix[1024];
+ sprintf(prefix, "%s", RED);
+ bool ok = read_entries(buf, filesize, u, cprintf, err,
+ RSRC_SECTOR_SIZE, 0, 3, prefix);
+ if(!ok)
+ fatal(*err, "Error while parsing rsrc table\n");
+
+ rsrc_file->data = malloc(filesize);
+ memcpy(rsrc_file->data, _buf, filesize);
+ rsrc_file->size = filesize;
+
+ return rsrc_file;
+ #undef printf
+ #undef fatal
+ #undef print_hex
+}
+
+void rsrc_free(struct rsrc_file_t *file)
+{
+ if(!file) return;
+ free(file);
+}
+
+void rsrc_dump(struct rsrc_file_t *file, void *u, rsrc_color_printf cprintf)
+{
+ #define printf(c, ...) cprintf(u, false, c, __VA_ARGS__)
+ #define print_hex(c, p, len, nl) \
+ do { printf(c, ""); print_hex(p, len, nl); } while(0)
+
+ #define TREE RED
+ #define HEADER GREEN
+ #define TEXT YELLOW
+ #define TEXT2 BLUE
+ #define SEP OFF
+
+ printf(HEADER, "RSRC File\n");
+
+ #undef printf
+ #undef print_hex
+}
+