191 lines
4.1 KiB
C
191 lines
4.1 KiB
C
/*
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* Copyright (c) 1989 - 1994, Julianne Frances Haugh
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* Copyright (c) 1996 - 1999, Marek Michałkiewicz
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* Copyright (c) 2003 - 2005, Tomasz Kłoczko
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* Copyright (c) 2007 - 2008, Nicolas François
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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. The name of the copyright holders or contributors may not be used to
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* endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <config.h>
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#ifdef RLOGIN
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#ident "$Id$"
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#include "prototypes.h"
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#include "defines.h"
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#include <stdio.h>
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#include <pwd.h>
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#include <netdb.h>
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static struct {
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int spd_name;
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int spd_baud;
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} speed_table[] =
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{
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#ifdef B50
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{
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B50, 50},
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#endif
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#ifdef B75
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{
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B75, 75},
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#endif
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#ifdef B110
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{
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B110, 110},
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#endif
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#ifdef B134
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{
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B134, 134},
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#endif
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#ifdef B150
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{
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B150, 150},
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#endif
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#ifdef B200
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{
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B200, 200},
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#endif
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#ifdef B300
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{
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B300, 300},
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#endif
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#ifdef B600
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{
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B600, 600},
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#endif
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#ifdef B1200
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{
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B1200, 1200},
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#endif
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#ifdef B1800
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{
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B1800, 1800},
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#endif
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#ifdef B2400
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{
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B2400, 2400},
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#endif
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#ifdef B4800
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{
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B4800, 4800},
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#endif
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#ifdef B9600
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{
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B9600, 9600},
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#endif
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#ifdef B19200
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{
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B19200, 19200},
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#endif
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#ifdef B38400
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{
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B38400, 38400},
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#endif
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{
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-1, -1}
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};
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static void get_remote_string (char *buf, int size)
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{
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for (;;) {
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if (read (0, buf, 1) != 1)
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exit (1);
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if (*buf == '\0')
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return;
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if (--size > 0)
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++buf;
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}
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/*NOTREACHED*/}
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int
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do_rlogin (const char *remote_host, char *name, int namelen, char *term,
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int termlen)
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{
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struct passwd *pwd;
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char remote_name[32];
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char *cp;
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int remote_speed = 9600;
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int speed_name = B9600;
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int i;
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TERMIO termio;
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get_remote_string (remote_name, sizeof remote_name);
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get_remote_string (name, namelen);
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get_remote_string (term, termlen);
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if ((cp = strchr (term, '/'))) {
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*cp++ = '\0';
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remote_speed = atoi (cp);
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if (0 == remote_speed) {
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remote_speed = 9600;
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}
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}
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for (i = 0; speed_table[i].spd_baud != remote_speed &&
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speed_table[i].spd_name != -1; i++);
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if (speed_table[i].spd_name != -1)
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speed_name = speed_table[i].spd_name;
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/*
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* Put the terminal in cooked mode with echo turned on.
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*/
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GTTY (0, &termio);
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termio.c_iflag |= ICRNL | IXON;
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termio.c_oflag |= OPOST | ONLCR;
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termio.c_lflag |= ICANON | ECHO | ECHOE;
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#ifdef CBAUD
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termio.c_cflag = (termio.c_cflag & ~CBAUD) | speed_name;
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#else
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termio.c_cflag = (termio.c_cflag) | speed_name;
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#endif
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STTY (0, &termio);
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pwd = getpwnam (name); /* local, no need for xgetpwnam */
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if (NULL == pwd) {
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return 0;
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}
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/*
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* ruserok() returns 0 for success on modern systems, and 1 on
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* older ones. If you are having trouble with people logging
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* in without giving a required password, THIS is the culprit -
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* go fix the #define in config.h.
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*/
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#ifndef RUSEROK
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return 0;
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#else
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return ruserok (remote_host, pwd->pw_uid == 0,
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remote_name, name) == RUSEROK;
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#endif
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}
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#endif /* RLOGIN */
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