norunpack.c

   1 // Copyright 2010       Sven Peter <svenpeter@gmail.com>
   2 // Licensed under the terms of the GNU GPL, version 2
   3 // http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt
   4
   5 #include <stdio.h>
   6 #include <string.h>
   7 #include <stdlib.h>
   8 #include <sys/stat.h>
   9 #include <unistd.h>
  10 #include "tools.h"
  11
  12 #ifdef WIN32
  13 #define MKDIR(x,y) mkdir(x);
  14 #else
  15 #define MKDIR(x,y) mkdir(x,y)
  16 #endif
  17
  18 static u8 *nor = NULL;
  19
  20 static void new_dir(const char *n)
  21 {
  22         MKDIR(n, 0777);
  23         if (chdir(n) < 0)
  24                 fail("chdir");
  25 }
  26
  27 static void do_toc(u8 *ptr)
  28 {
  29         u32 n_entries;
  30         u32 i;
  31         u8 *p;
  32         u8 *tmp;
  33         u64 size;
  34         char name[0x20];
  35
  36         n_entries = be32(ptr + 0x04);
  37         p = ptr + 0x10;
  38
  39         for(i = 0; i < n_entries; i++) {
  40                 memcpy(name, p + 16, 0x20);
  41
  42                 if (strncmp(name, "asecure_loader", 0x20) == 0) {
  43                         new_dir("asecure_loader");
  44                         do_toc(ptr + be64(p));
  45                         if (chdir("..") < 0)
  46                                 fail("chdir(..)");
  47                 } else if (strncmp(name, "ros", 3) == 0) {
  48                         new_dir(name);
  49                         do_toc(ptr + be64(p) + 0x10);
  50                         if (chdir("..") < 0)
  51                                 fail("chdir(..)");
  52                 } else {
  53                         tmp = ptr + be64(p);
  54                         size = be64(p + 0x08);
  55                         if (be32(tmp + 0x10) == 0x53434500) {
  56                                 tmp += 0x10;
  57                                 size -= 0x10;
  58                         }
  59
  60                         memcpy_to_file(name, tmp, size);
  61                 }
  62                 p += 0x30;
  63         }
  64 }
  65
  66 int main(int argc, char *argv[])
  67 {
  68         if (argc != 3)
  69                 fail("usage: norunpack dump.b directory");
  70
  71         nor = mmap_file(argv[1]);
  72
  73         new_dir(argv[2]);
  74
  75         do_toc(nor + 0x400);
  76
  77         return 0;
  78 }