contrib/libpam/libpam/pam_password.c

   1 /* pam_password.c - PAM Password Management */
   2
   3 /*
   4  * $Id: pam_password.c,v 1.7 1997/04/05 06:56:45 morgan Exp $
   5  * $FreeBSD: src/contrib/libpam/libpam/pam_password.c,v 1.1.1.1.6.2 2001/06/11 15:28:12 markm Exp $
   6  * $DragonFly: src/contrib/libpam/libpam/Attic/pam_password.c,v 1.2 2003/06/17 04:24:03 dillon Exp $
   7  *
   8  * $Log: pam_password.c,v $
   9  */
  10
  11 #include <stdio.h>
  12 #include <stdlib.h>
  13
  14 #include "pam_private.h"
  15
  16 int pam_chauthtok(pam_handle_t *pamh, int flags)
  17 {
  18     int retval;
  19
  20     D(("called."));
  21
  22     IF_NO_PAMH("pam_chauthtok", pamh, PAM_SYSTEM_ERR);
  23
  24     if (pamh->former.choice == PAM_NOT_STACKED) {
  25         _pam_start_timer(pamh);    /* we try to make the time for a failure
  26                                       independent of the time it takes to
  27                                       fail */
  28         _pam_sanitize(pamh);
  29         pamh->former.update = PAM_FALSE;
  30     }
  31
  32     /* first loop through to check if there will be a problem */
  33     if (pamh->former.update ||
  34         (retval = _pam_dispatch(pamh, flags|PAM_PRELIM_CHECK,
  35                                 PAM_CHAUTHTOK)) == PAM_SUCCESS) {
  36         pamh->former.update = PAM_TRUE;
  37         retval = _pam_dispatch(pamh, flags|PAM_UPDATE_AUTHTOK,
  38                                PAM_CHAUTHTOK);
  39     }
  40
  41     /* if we completed we should clean up */
  42     if (retval != PAM_INCOMPLETE) {
  43         _pam_sanitize(pamh);
  44         pamh->former.update = PAM_FALSE;
  45         _pam_await_timer(pamh, retval);   /* if unsuccessful then wait now */
  46         D(("pam_authenticate exit"));
  47     } else {
  48         D(("will resume when ready"));
  49     }
  50
  51     return retval;
  52 }
  53