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 pread( void * ptr, size_t size, size_t count, FILE * stream ) {
  16         size_t s = fread(ptr,size,count,stream);
  17         if (s < (size*count)) {
  18                 fprintf(stderr,"read too little\n");
  19         }
  20 }
  21
  22 int main (int argc, char ** argv) {
  23         progname = argv[0];
  24
  25         fprintf(stderr," isz struct sz: 0x%X, %u\n",
  26                 (unsigned int)sizeof(isz_header),(unsigned int)sizeof(isz_header));
  27
  28         if (argc < 2) {
  29                 usage();
  30         }
  31
  32         isz_header * header = malloc(sizeof(isz_header));
  33         if (header == NULL) {
  34                 fputs("malloc error\n",stderr);
  35                 exit(EXIT_FAILURE);
  36         }
  37
  38         FILE * isz = fopen(argv[1],"rb");
  39         if (isz == NULL) {
  40                 fprintf(stderr,"could not open %s\n",argv[1]);
  41                 exit(EXIT_FAILURE);
  42         }
  43
  44         pread(header,1,sizeof(isz_header),isz);
  45
  46         if ( memcmp( header->signature, ISZ_MAGIC,
  47           sizeof(ISZ_MAGIC)) ) {
  48                 fputs("Invalid Magic.\n",stderr);
  49                 exit(EXIT_FAILURE);
  50         }
  51
  52         if (header->header_size != sizeof(isz_header) ) {
  53                 fprintf(stderr, "Failure: ISZ file header size incorrect (is %lu, should be %lu)\n\
  54                         Possibly older isz version, unsupported\n",
  55                         (long unsigned int)(header->header_size), sizeof(isz_header));
  56                 exit(EXIT_FAILURE);
  57         }
  58
  59         printf("Version : %u\n",header->version);
  60         printf("Volume Serial : %lu\n",(long)(header->vsn_1<<8)+header->vsn_2);
  61         printf("Sector Size : %d\n",    header->sector_sz);
  62         printf("Total Sectors : %d\n",header->total_sectors);
  63         printf("Calculated Size : %d Bytes\n", (header->sector_sz) * (header->total_sectors) );
  64
  65         printf("Password Flag : %d\n", header->has_password);
  66         printf("Segment Size : %ld\n", header->segment_sz);
  67         printf("Num Blocks/Chunks : %d\n", header->nblocks);
  68         printf("Block/Chunk Size : %d\n", header->block_sz);
  69
  70         printf("Chunk Ptr len : %d\n", header->block_ptr_sz);
  71         printf("Segment Number : %d\n", header->segment_num);
  72
  73         printf("Chunk Ptr Offset : %d\n", header->chunk_offset);
  74         printf("Segment Offset : %d\n", header->segment_offset);
  75         printf("Data Offset : %d\n", header->data_offset);
  76
  77         exit(EXIT_SUCCESS);
  78 }