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/* pam_password.c - PAM Password Management */
/*
* $Id$
*/
#include "pam_private.h"
#include <stdio.h>
#include <stdlib.h>
int pam_chauthtok(pam_handle_t *pamh, int flags)
{
int retval;
D(("called."));
IF_NO_PAMH("pam_chauthtok", pamh, PAM_SYSTEM_ERR);
if (__PAM_FROM_MODULE(pamh)) {
D(("called from module!?"));
return PAM_SYSTEM_ERR;
}
/* applications are not allowed to set this flags */
if (flags & (PAM_PRELIM_CHECK | PAM_UPDATE_AUTHTOK)) {
pam_syslog (pamh, LOG_ERR,
"PAM_PRELIM_CHECK or PAM_UPDATE_AUTHTOK set by application");
return PAM_SYSTEM_ERR;
}
if (pamh->former.choice == PAM_NOT_STACKED) {
_pam_start_timer(pamh); /* we try to make the time for a failure
independent of the time it takes to
fail */
_pam_sanitize(pamh);
pamh->former.update = PAM_FALSE;
}
/* first call to check if there will be a problem */
if (pamh->former.update ||
(retval = _pam_dispatch(pamh, flags|PAM_PRELIM_CHECK,
PAM_CHAUTHTOK)) == PAM_SUCCESS) {
D(("completed check ok: former=%d", pamh->former.update));
pamh->former.update = PAM_TRUE;
retval = _pam_dispatch(pamh, flags|PAM_UPDATE_AUTHTOK,
PAM_CHAUTHTOK);
}
/* if we completed we should clean up */
if (retval != PAM_INCOMPLETE) {
_pam_sanitize(pamh);
pamh->former.update = PAM_FALSE;
_pam_await_timer(pamh, retval); /* if unsuccessful then wait now */
D(("pam_chauthtok exit %d - %d", retval, pamh->former.choice));
} else {
D(("will resume when ready", retval));
}
return retval;
}
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