imap/src/osdep/unix/log_os4.c

   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:     OSF/1 (Digital UNIX) 4 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 \f
  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   int i;
  39   char *s;
  40   char *name = cpystr (pw->pw_name);
  41   char *host = cpystr (tcp_clienthost ());
  42   uid_t uid = pw->pw_uid;
  43   long ret = NIL;
  44                                 /* tie off address */
  45   if (s = strchr (host,' ')) *s = '\0';
  46   if (*host == '[') {           /* convert [a.b.c.d] to a.b.c.d */
  47     memmove (host,host+1,i = strlen (host + 2));
  48     host[i] = '\0';
  49   }
  50   if (sia_become_user (checkpw_collect,argc,argv,host,name,NIL,NIL,NIL,NIL,
  51                        SIA_BEU_REALLOGIN|SIA_BEU_OKROOTDIR) != SIASUCCESS)
  52     setreuid (0,0);             /* make sure have root again */
  53                                 /* probable success, complete login */
  54   else ret = (!setreuid (0,0) && !setuid (uid));
  55   fs_give ((void **) &name);
  56   fs_give ((void **) &host);
  57   return ret;
  58 }