examples/auth/crackcheck/crackcheck.c

   1 #include <memory.h>
   2 #include <string.h>
   3 #include <stdlib.h>
   4 #include <stdio.h>
   5 #include <ctype.h>
   6 #include <crack.h>
   7
   8 void usage(char *command) {
   9         char *c, *comm;
  10
  11         comm = command;
  12         while ((c = strrchr(comm, '/')) != NULL) {
  13                 comm = c + 1;
  14         }
  15
  16         fprintf(stderr, "Usage: %s -d dictionary\n\n", comm);
  17         fprintf(stderr, "     -d dictionary file for cracklib\n\n");
  18         fprintf(stderr, "       The password is expected to be given via stdin.\n\n");
  19         exit(-1);
  20 }
  21
  22 int main(int argc, char **argv) {
  23         extern char *optarg;
  24         int c;
  25
  26         char f[256];
  27         char *dictionary = NULL;
  28         char *password;
  29         char *reply;
  30
  31         while ( (c = getopt(argc, argv, "d:")) != EOF){
  32                 switch(c) {
  33                 case 'd':
  34                         dictionary = strdup(optarg);
  35                         break;
  36                 default:
  37                         usage(argv[0]);
  38                 }
  39         }
  40
  41         if (dictionary == NULL) {
  42                 fprintf(stderr, "ERR - Wrong Command Line\n\n");
  43                 usage(argv[0]);
  44         }
  45
  46         password = fgets(f, sizeof(f), stdin);
  47
  48         if (password == NULL) {
  49                 fprintf(stderr, "ERR - Failed to read password\n\n");
  50                 exit(-2);
  51         }
  52
  53         reply = FascistCheck(password, dictionary);
  54         if (reply != NULL) {
  55                 fprintf(stderr, "ERR - %s\n\n", reply);
  56                 exit(-3);
  57         }
  58
  59         exit(0);
  60
  61 }
  62