/*
 * Program:	SCO server login
 *
 * Author:	Mark Crispin
 *		Networks and Distributed Computing
 *		Computing & Communications
 *		University of Washington
 *		Administration Building, AG-44
 *		Seattle, WA  98195
 *		Internet: MRC@CAC.Washington.EDU
 *
 * Date:	1 August 1988
 * Last Edited:	11 October 1995
 *
 * Copyright 1995 by the University of Washington
 *
 *  Permission to use, copy, modify, and distribute this software and its
 * documentation for any purpose and without fee is hereby granted, provided
 * that the above copyright notice appears in all copies and that both the
 * above copyright notice and this permission notice appear in supporting
 * documentation, and that the name of the University of Washington not be
 * used in advertising or publicity pertaining to distribution of the software
 * without specific, written prior permission.  This software is made available
 * "as is", and
 * THE UNIVERSITY OF WASHINGTON DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED,
 * WITH REGARD TO THIS SOFTWARE, INCLUDING WITHOUT LIMITATION ALL IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, AND IN
 * NO EVENT SHALL THE UNIVERSITY OF WASHINGTON BE LIABLE FOR ANY SPECIAL,
 * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, TORT
 * (INCLUDING NEGLIGENCE) OR STRICT LIABILITY, ARISING OUT OF OR IN CONNECTION
 * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 *
 */
 
/* Server log in
 * Accepts: user name string
 *	    password string
 *	    argument count
 *	    argument vector
 * Returns: T if password validated, NIL otherwise
 */

static int myeuid = 0;		/* local EUID */

long server_login (char *user,char *pass,int argc,char *argv[])
{
  char tmp[MAILTMPLEN];
  struct passwd *pw;
  struct pr_passwd *prpw;
  set_auth_parameters (argc,argv);
				/* allow case-independent match */
  if (!(prpw = getprpwnam (lcase (strcpy (tmp,user))))) return NIL;
				/* encrypt the given password string */
  if (strcmp (prpw->ufld.fd_encrypt,bigcrypt (pass,prpw->ufld.fd_encrypt)))
    return NIL;
  pw = getpwnam (user);		/* all OK, get the public information */
  myeuid = pw->pw_uid;		/* set up for Geteuid() */
  setluid ((uid_t) pw->pw_uid);	/* purportedly needed */
  setgid ((gid_t) pw->pw_gid);	/* login in as that user */
  setuid ((uid_t) pw->pw_uid);
  return env_init (pw->pw_name,pw->pw_dir);
}


/* Emulator for geteuid()
 * Returns: UID from server_login() if we logged in
 */

int Geteuid ()
{
				/* return UID from login if given */
  return myeuid ? myeuid : getuid ();
}