171 lines
3.9 KiB
C
171 lines
3.9 KiB
C
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/*
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* Copyright 1989 - 1994, Julianne Frances Haugh
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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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#include <config.h>
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#ifdef RLOGIN
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#include "rcsid.h"
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RCSID("$Id: rlogin.c,v 1.4 1997/12/14 20:07:20 marekm Exp $")
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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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extern int ruserok();
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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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#ifdef B50
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{ B50, 50 },
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#endif
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#ifdef B75
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{ B75, 75 },
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#endif
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#ifdef B110
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{ B110, 110 },
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#endif
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#ifdef B134
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{ B134, 134 },
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#endif
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#ifdef B150
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{ B150, 150 },
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#endif
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#ifdef B200
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{ B200, 200 },
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#endif
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#ifdef B300
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{ B300, 300 },
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#endif
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#ifdef B600
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{ B600, 600 },
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#endif
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#ifdef B1200
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{ B1200, 1200 },
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#endif
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#ifdef B1800
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{ B1800, 1800 },
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#endif
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#ifdef B2400
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{ B2400, 2400 },
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#endif
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#ifdef B4800
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{ B4800, 4800 },
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#endif
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#ifdef B9600
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{ B9600, 9600 },
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#endif
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#ifdef B19200
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{ B19200, 19200 },
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#endif
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#ifdef B38400
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{ B38400, 38400 },
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#endif
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{ -1, -1 }
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};
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static void
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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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}
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int
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do_rlogin(const char *remote_host, char *name, int namelen, char *term, 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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if (! (remote_speed = atoi (cp)))
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remote_speed = 9600;
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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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;
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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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#ifndef USE_SGTTY
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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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termio.c_cflag = (termio.c_cflag & ~CBAUD) | speed_name;
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#else
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#endif
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STTY (0, &termio);
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if (! (pwd = getpwnam (name)))
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return 0;
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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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