108 lines
3.0 KiB
C
108 lines
3.0 KiB
C
/*
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* Copyright 1991, Julianne Frances Haugh and Chip Rosenthal
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of Julianne F. Haugh nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY JULIE HAUGH AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL JULIE HAUGH OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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static char rcsid[] = "$Id: scologin.c,v 1.1 1997/05/01 23:12:00 marekm Exp $";
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#endif
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#include <stdio.h>
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#include <pwd.h>
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#define USAGE "usage: %s [ -r remote_host remote_user local_user [ term_type ] ]\n"
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#define LOGIN "/etc/login"
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extern int errno;
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extern char *sys_errlist[];
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extern char **environ;
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int
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main(argc, argv)
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int argc;
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char *argv[];
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{
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char *rhost, *ruser, *luser;
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char term[1024], *nargv[8], *nenvp[2];
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int root_user, i;
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struct passwd *pw;
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if (argc == 1) {
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/*
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* Called from telnetd.
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*/
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nargv[0] = "login";
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nargv[1] = "-p";
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nargv[2] = NULL;
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} else if (strcmp(argv[1], "-r") == 0 && argc >= 6) {
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/*
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* Called from rlogind.
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*/
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rhost = argv[2];
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ruser = argv[3];
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luser = argv[4];
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root_user = ((pw = getpwnam(luser)) != NULL && pw->pw_uid == 0);
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i = 0;
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if ( argc == 6 ) {
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strcpy(term, "TERM=");
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strncat(term+sizeof("TERM=")-1,
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argv[5], sizeof(term)-sizeof("TERM="));
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term[sizeof(term)-1] = '\0';
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nenvp[i++] = term;
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}
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nenvp[i++] = NULL;
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environ = nenvp;
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i = 0;
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nargv[i++] = "login";
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nargv[i++] = "-p";
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nargv[i++] = "-h";
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nargv[i++] = rhost;
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if (ruserok(rhost, root_user, ruser, luser) == 0)
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nargv[i++] = "-f";
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nargv[i++] = luser;
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nargv[i++] = NULL;
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} else {
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fprintf(stderr, USAGE, argv[0]);
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exit(1);
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}
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(void) execv(LOGIN, nargv);
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fprintf(stderr, "%s: could not exec '%s' [%s]\n",
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argv[0], LOGIN, sys_errlist[errno]);
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exit(1);
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/*NOTREACHED*/
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}
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