shadow/libmisc/pwdcheck.c

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C
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#include <config.h>
#ident "$Id: pwdcheck.c,v 1.9 2005/10/19 15:21:07 kloczek Exp $"
#include <pwd.h>
#include <stdio.h>
#include "prototypes.h"
#include "defines.h"
#include "pwauth.h"
#ifdef HAVE_SHADOW_H
#include <shadow.h>
#endif
#ifdef USE_PAM
#include "pam_defs.h"
#endif
#define WRONGPWD2 "incorrect password for `%s'"
void passwd_check (const char *user, const char *passwd, const char *progname)
{
#ifdef USE_PAM
pam_handle_t *pamh = NULL;
int retcode;
if (pam_start (progname, user, &conv, &pamh)) {
bailout:
SYSLOG ((LOG_WARN, WRONGPWD2, user));
sleep (1);
fprintf (stderr, _("Incorrect password for %s.\n"), user);
exit (1);
}
if (pam_authenticate (pamh, 0))
goto bailout;
retcode = pam_acct_mgmt (pamh, 0);
if (retcode == PAM_NEW_AUTHTOK_REQD)
retcode = pam_chauthtok (pamh, PAM_CHANGE_EXPIRED_AUTHTOK);
if (retcode)
goto bailout;
if (pam_setcred (pamh, 0))
goto bailout;
/* no need to establish a session; this isn't a session-oriented
* activity... */
#else /* !USE_PAM */
struct spwd *sp;
if ((sp = getspnam (user)))
passwd = sp->sp_pwdp;
endspent ();
if (pw_auth (passwd, user, PW_LOGIN, (char *) 0) != 0) {
SYSLOG ((LOG_WARN, WRONGPWD2, user));
sleep (1);
fprintf (stderr, _("Incorrect password for %s.\n"), user);
exit (1);
}
#endif /* !USE_PAM */
}