1  
       2  #include "config.h"
       3  
       4  #include <stdlib.h>
       5  #include <stdio.h>
       6  #include <unistd.h>
       7  #include <pwd.h>
       8  #include <sys/types.h>
       9  #include <security/pam_appl.h>
      10  
      11  static int
      12  test_conv (int num_msg UNUSED, const struct pam_message **msgm UNUSED,
      13  	   struct pam_response **response UNUSED, void *appdata_ptr UNUSED)
      14  {
      15      return 0;
      16  }
      17  
      18  static struct pam_conv conv = {
      19      test_conv,
      20      NULL
      21  };
      22  
      23  int main(void)
      24  {
      25      char *user;
      26      pam_handle_t *pamh;
      27      struct passwd *pw;
      28      uid_t uid;
      29      int res;
      30  
      31      uid = geteuid();
      32      pw = getpwuid(uid);
      33      if (pw) {
      34  	user = pw->pw_name;
      35      } else {
      36  	fprintf(stderr, "Invalid userid: %lu\n", (unsigned long) uid);
      37  	exit(1);
      38      }
      39  
      40      pam_start("vpass", user, &conv, &pamh);
      41      pam_set_item(pamh, PAM_TTY, "/dev/tty");
      42      if ((res = pam_authenticate(pamh, 0)) != PAM_SUCCESS) {
      43  	fprintf(stderr, "Oops: %s\n", pam_strerror(pamh, res));
      44  	exit(1);
      45      }
      46  
      47      pam_end(pamh, res);
      48      exit(0);
      49  }