utilities/hogextract.c

   1 /*
   2  * Written 1999 Jan 29 by Josh Cogliati
   3  * I grant this program to public domain.
   4  */
   5
   6 #include <stdio.h>
   7 #include <stdlib.h>
   8 #include <sys/types.h>
   9 #include <sys/stat.h>
  10 #include <fcntl.h>
  11
  12 int
  13 main(int argc, char *argv[])
  14 {
  15         FILE *hogfile, *writefile;
  16         int len;
  17         char filename[13];
  18         char *buf;
  19         struct stat statbuf;
  20
  21         if (argc != 2) {
  22                 printf("Usage: hogextract hogfile\n"
  23                        "extracts all the files in hogfile into the current directory\n");
  24                 exit(0);
  25         }
  26         hogfile = fopen(argv[1], "r");
  27         stat(argv[1], &statbuf);
  28         printf("%i\n", (int)statbuf.st_size);
  29         buf = (char *)malloc(3);
  30         fread(buf, 3, 1, hogfile);
  31         printf("Extracting from: %s\n", argv[1]);
  32         free(buf);
  33         while(ftell(hogfile)<statbuf.st_size) {
  34                 fread(filename, 13, 1, hogfile);
  35                 fread(&len, sizeof(int), 1, hogfile);
  36                 printf("Filename: %s \tLength: %i\n", filename, len);
  37                 buf = (char *)malloc(len);
  38                 if (buf == NULL) {
  39                         printf("Unable to allocate memory\n");
  40                 } else {
  41                         fread(buf, len, 1, hogfile);
  42                         writefile = fopen(filename, "w");
  43                         fwrite(buf, len, 1, writefile);
  44                         fclose(writefile);
  45                         free(buf);
  46                 }
  47         }
  48         fclose(hogfile);
  49
  50         return 0;
  51 }