isz2iso/isz.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <memory.h>
   4 #include <inttypes.h>
   5 #include "isz.h"
   6
   7 char * progname;
   8
   9 void usage(void) {
  10         printf("isz converter\n");
  11         printf("usage:\n\t%s file.isz\n",progname);
  12         exit(EXIT_FAILURE);
  13 }
  14
  15 void print_isz_header(isz_header *header) {
  16         printf("Header Size : %u\n",header->header_sz);
  17         printf("Version : %u\n",header->version);
  18         printf("Volume Serial : %u\n",header->vsn);
  19         printf("Sector Size : %d\n",    header->sector_sz);
  20         printf("Total Sectors : %d\n",header->total_sectors);
  21         printf("Calculated Size : %d Bytes\n", (header->sector_sz) * (header->total_sectors) );
  22
  23         printf("Password Flag : %d\n", header->has_password);
  24         printf("Segment Size : %ld\n", header->segment_sz);
  25         printf("Num Blocks/Chunks : %d\n", header->nblocks);
  26         printf("Block/Chunk Size : %d\n", header->block_sz);
  27
  28         printf("Chunk Ptr len : %d\n", header->block_ptr_sz);
  29         printf("Segment Number : %d\n", header->segment_num);
  30
  31         printf("Chunk Ptr Offset : %d\n", header->chunk_offset);
  32         printf("Segment Offset : %d\n", header->segment_offset);
  33         printf("Data Offset : %d\n", header->data_offset);
  34
  35         printf("Reserved : %d\n",header->reserved);
  36 }
  37
  38 void pread( void * ptr, size_t size, size_t count, FILE * stream ) {
  39         size_t s = fread(ptr,size,count,stream);
  40         if (s < (size*count)) {
  41                 fprintf(stderr," read too little\n");
  42         }
  43 }
  44
  45 int main (int argc, char ** argv) {
  46         progname = argv[0];
  47
  48         fprintf(stderr," isz struct sz: 0x%X, %u\n",
  49                 (unsigned int)sizeof(isz_header),(unsigned int)sizeof(isz_header));
  50
  51         if (argc < 2) {
  52                 usage();
  53         }
  54
  55         isz_header * header = malloc(sizeof(isz_header));
  56         if (header == NULL) {
  57                 fputs(" malloc error\n",stderr);
  58                 exit(EXIT_FAILURE);
  59         }
  60
  61         FILE * isz = fopen(argv[1],"rb");
  62         if (isz == NULL) {
  63                 fprintf(stderr," could not open %s\n",argv[1]);
  64                 exit(EXIT_FAILURE);
  65         }
  66
  67         pread(header,1,sizeof(isz_header),isz);
  68
  69         if ( memcmp( header->signature, ISZ_MAGIC,
  70           sizeof(ISZ_MAGIC)) ) {
  71                 fputs(" Invalid Magic.\n",stderr);
  72                 exit(EXIT_FAILURE);
  73         }
  74
  75         if (header->header_sz != sizeof(isz_header) ) {
  76                 fprintf(stderr, " Failure: ISZ file header size incorrect (is %lu, should be %lu)\n"
  77                         " Possibly older isz version, unsupported\n",
  78                         (long unsigned int)(header->header_sz), sizeof(isz_header));
  79                 //exit(EXIT_FAILURE);
  80         }
  81
  82         print_isz_header(header);
  83
  84         exit(EXIT_SUCCESS);
  85 }