1 /* ========================================================================

2 * Copyright 1988-2006 University of Washington

3 *

4 * Licensed under the Apache License, Version 2.0 (the "License");

5 * you may not use this file except in compliance with the License.

6 * You may obtain a copy of the License at

7 *

8 * http://www.apache.org/licenses/LICENSE-2.0

9 *

10 *

11 * ========================================================================

12 */

13

14 /*

15 * Program: BSI login

16 *

17 * Author: Mark Crispin

18 * Networks and Distributed Computing

19 * Computing & Communications

20 * University of Washington

21 * Administration Building, AG-44

22 * Seattle, WA 98195

23 * Internet: MRC@CAC.Washington.EDU

24 *

25 * Date: 1 August 1988

26 * Last Edited: 30 August 2006

27 */

28 

29 /* Log in

30 * Accepts: login passwd struct

31 * argument count

32 * argument vector

33 * Returns: T if success, NIL otherwise

34 */

35

36 long loginpw (struct passwd *pw,int argc,char *argv[])

37 {

38 long ret = NIL;

39 uid_t euid = geteuid ();

40 login_cap_t *lc = login_getclass (pw->pw_class);

41 /* have class and can become user? */

42 if (lc && !seteuid (pw->pw_uid)) {

43 /* ask for approval */

44 if (auth_approve (lc,pw->pw_name,

45 (char *) mail_parameters (NIL,GET_SERVICENAME,NIL)) <= 0)

46 seteuid (euid); /* not approved, restore root euid */

47 else { /* approved */

48 seteuid (euid); /* restore former root euid first */

49 setsid (); /* ensure we are session leader */

50 /* log the guy in */

51 ret = !setusercontext (lc,pw,pw->pw_uid,LOGIN_SETALL&~LOGIN_SETPATH);

52 }

53 }

54 return ret;

55 }