clean up import, RCS ids
This commit is contained in:
cgd
parent
7972ccad6f
commit
2efe726b86
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@ -1,9 +1,12 @@
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# from: @(#)Makefile 5.6 (Berkeley) 9/27/90
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# $Id: Makefile,v 1.3 1994/01/28 00:32:35 cgd Exp $
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# from: @(#)Makefile 8.1 (Berkeley) 6/4/93
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# $Id: Makefile,v 1.4 1994/06/05 15:33:20 cgd Exp $
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PROG= rshd
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SRCS= rshd.c
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CFLAGS+=-DKERBEROS -DCRYPT
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SRCS= rshd.c des_rw.c
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MAN8= rshd.0
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DPADD= ${LIBKRB} ${LIBDES}
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LDADD= -lkrb -ldes
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.PATH: ${.CURDIR}/../../usr.bin/rlogin
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.include <bsd.prog.mk>
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@ -1,5 +1,5 @@
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.\" Copyright (c) 1983, 1989, 1991 The Regents of the University of California.
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.\" All rights reserved.
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.\" Copyright (c) 1983, 1989, 1991, 1993
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.\" The Regents of the University of California. 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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@ -29,10 +29,10 @@
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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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.\" from: @(#)rshd.8 6.11 (Berkeley) 4/20/91
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.\" $Id: rshd.8,v 1.3 1993/12/23 09:05:45 cgd Exp $
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.\" from: @(#)rshd.8 8.1 (Berkeley) 6/4/93
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.\" $Id: rshd.8,v 1.4 1994/06/05 15:33:23 cgd Exp $
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.\"
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.Dd April 20, 1991
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.Dd June 4, 1993
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.Dt RSHD 8
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.Os BSD 4.2
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.Sh NAME
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@ -129,6 +129,11 @@ option prevents
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from doing any validation based on the user's ``.rhosts'' file,
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unless the user is the superuser.
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.It
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If the file
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.Pa /etc/nologin
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exists and the user is not the superuser,
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the connection is closed.
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.It
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A null byte is returned on the initial socket
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and the command line is passed to the normal login
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shell of the user. The
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@ -143,21 +148,20 @@ option is present.
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The use of keepalive messages allows sessions to be timed out
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if the client crashes or becomes unreachable.
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.Pp
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The
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The
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.Fl L
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option causes all successful accesses to be logged to
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.Xr syslogd 8
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as
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.Li auth.info
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messages and all failed accesses to be logged as
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.Li auth.notice .
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messages.
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.Sh DIAGNOSTICS
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Except for the last one listed below,
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all diagnostic messages
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are returned on the initial socket,
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after which any network connections are closed.
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An error is indicated by a leading byte with a value of
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1 (0 is returned in step 9 above upon successful completion
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1 (0 is returned in step 10 above upon successful completion
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of all the steps prior to the execution of the login shell).
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.Bl -tag -width indent
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.It Sy Locuser too long.
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@ -1,6 +1,6 @@
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/*-
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* Copyright (c) 1988, 1989 The Regents of the University of California.
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* All rights reserved.
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* Copyright (c) 1988, 1989, 1992, 1993, 1994
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* The Regents of the University of California. 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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@ -32,23 +32,16 @@
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*/
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#ifndef lint
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char copyright[] =
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"@(#) Copyright (c) 1988, 1989 The Regents of the University of California.\n\
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All rights reserved.\n";
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static char copyright[] =
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"@(#) Copyright (c) 1988, 1989, 1992, 1993, 1994\n\
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The Regents of the University of California. All rights reserved.\n";
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#endif /* not lint */
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#ifndef lint
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/*static char sccsid[] = "from: @(#)rshd.c 5.38 (Berkeley) 3/2/91";*/
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static char rcsid[] = "$Id: rshd.c,v 1.6 1994/05/19 22:54:19 pk Exp $";
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/* from: static char sccsid[] = "@(#)rshd.c 8.2 (Berkeley) 4/6/94"; */
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static char *rcsid = "$Id: rshd.c,v 1.7 1994/06/05 15:33:24 cgd Exp $";
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#endif /* not lint */
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/*
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* From:
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* $Source: /cvsroot/src/libexec/rshd/rshd.c,v $
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* $Header: /mit/kerberos/ucb/mit/rshd/RCS/rshd.c,v
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* 5.2 89/07/31 19:30:04 kfall Exp $
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*/
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/*
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* remote shell server:
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* [port]\0
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@ -60,39 +53,41 @@ static char rcsid[] = "$Id: rshd.c,v 1.6 1994/05/19 22:54:19 pk Exp $";
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#include <sys/param.h>
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#include <sys/ioctl.h>
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#include <sys/time.h>
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#include <fcntl.h>
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#include <signal.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <netdb.h>
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#include <pwd.h>
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#include <syslog.h>
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#include <arpa/nameser.h>
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#include <resolv.h>
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#include <unistd.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <paths.h>
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#include <pwd.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <paths.h>
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#include <syslog.h>
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#include <unistd.h>
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int keepalive = 1;
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int check_all = 0;
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int paranoid = 0;
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char *index(), *rindex(), *strncat();
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/*VARARGS1*/
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int error();
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int check_all;
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int log_success; /* If TRUE, log all successful accesses */
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int sent_null;
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void doit __P((struct sockaddr_in *));
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void error __P((const char *, ...));
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void getstr __P((char *, int, char *));
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int local_domain __P((char *));
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char *topdomain __P((char *));
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void usage __P((void));
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#ifdef KERBEROS
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#include <kerberosIV/des.h>
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#include <kerberosIV/krb.h>
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#define VERSION_SIZE 9
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#define SECURE_MESSAGE "This rsh session is using DES encryption for all transmissions.\r\n"
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#define OPTIONS "alknvxL"
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#define OPTIONS "alnkvxL"
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char authbuf[sizeof(AUTH_DAT)];
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char tickbuf[sizeof(KTEXT_ST)];
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int doencrypt, use_kerberos, vacuous;
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@ -101,12 +96,11 @@ Key_schedule schedule;
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#define OPTIONS "alnL"
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#endif
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/*ARGSUSED*/
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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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char *argv[];
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{
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extern int opterr, optind;
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extern int __check_rhosts_file;
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struct linger linger;
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int ch, on = 1, fromlen;
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@ -120,11 +114,9 @@ main(argc, argv)
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case 'a':
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check_all = 1;
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break;
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case 'l':
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__check_rhosts_file = 0;
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break;
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case 'n':
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keepalive = 0;
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break;
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@ -143,15 +135,13 @@ main(argc, argv)
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break;
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#endif
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#endif
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case 'L':
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paranoid = 1;
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log_success = 1;
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break;
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case '?':
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default:
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usage();
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exit(2);
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break;
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}
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argc -= optind;
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@ -185,6 +175,7 @@ main(argc, argv)
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sizeof (linger)) < 0)
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syslog(LOG_WARNING, "setsockopt (SO_LINGER): %m");
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doit(&from);
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/* NOTREACHED */
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}
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char username[20] = "USER=";
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@ -195,21 +186,20 @@ char *envinit[] =
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{homedir, shell, path, username, 0};
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char **environ;
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void
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doit(fromp)
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struct sockaddr_in *fromp;
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{
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char cmdbuf[NCARGS+1], *cp;
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char locuser[16], remuser[16];
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struct passwd *pwd;
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int s;
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extern char *__rcmd_errstr; /* syslog hook from libc/net/rcmd.c. */
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struct hostent *hp;
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char *hostname, *errorstr = NULL, *errorhost;
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struct passwd *pwd;
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u_short port;
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int pv[2], pid, cc;
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int nfd;
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fd_set ready, readfrom;
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char buf[BUFSIZ], sig;
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int cc, nfd, pv[2], pid, s;
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int one = 1;
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char *hostname, *errorstr, *errorhost;
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char *cp, sig, buf[BUFSIZ];
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char cmdbuf[NCARGS+1], locuser[16], remuser[16];
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char remotehost[2 * MAXHOSTNAMELEN + 1];
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#ifdef KERBEROS
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@ -276,8 +266,9 @@ doit(fromp)
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if (fromp->sin_port >= IPPORT_RESERVED ||
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fromp->sin_port < IPPORT_RESERVED/2) {
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syslog(LOG_NOTICE|LOG_AUTH,
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"Connection from %s on illegal port",
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inet_ntoa(fromp->sin_addr));
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"Connection from %s on illegal port %u",
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inet_ntoa(fromp->sin_addr),
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fromp->sin_port);
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exit(1);
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}
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@ -285,7 +276,7 @@ doit(fromp)
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port = 0;
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for (;;) {
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char c;
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if ((cc = read(0, &c, 1)) != 1) {
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if ((cc = read(STDIN_FILENO, &c, 1)) != 1) {
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if (cc < 0)
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syslog(LOG_NOTICE, "read: %m");
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shutdown(0, 1+1);
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@ -313,7 +304,7 @@ doit(fromp)
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}
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fromp->sin_port = htons(port);
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if (connect(s, (struct sockaddr *)fromp, sizeof (*fromp)) < 0) {
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syslog(LOG_INFO, "connect second port: %m");
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syslog(LOG_INFO, "connect second port %d: %m", port);
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exit(1);
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}
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}
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@ -331,6 +322,7 @@ doit(fromp)
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dup2(f, 1);
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dup2(f, 2);
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#endif
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errorstr = NULL;
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hp = gethostbyaddr((char *)&fromp->sin_addr, sizeof (struct in_addr),
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fromp->sin_family);
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if (hp) {
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@ -348,9 +340,6 @@ doit(fromp)
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strncpy(remotehost, hp->h_name, sizeof(remotehost) - 1);
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remotehost[sizeof(remotehost) - 1] = 0;
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errorhost = remotehost;
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#ifdef RES_DNSRCH
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_res.options &= ~RES_DNSRCH;
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#endif
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hp = gethostbyname(remotehost);
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if (hp == NULL) {
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syslog(LOG_INFO,
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@ -424,6 +413,9 @@ doit(fromp)
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setpwent();
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pwd = getpwnam(locuser);
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if (pwd == NULL) {
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syslog(LOG_INFO|LOG_AUTH,
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"%s@%s as %s: unknown login. cmd='%.80s'",
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remuser, hostname, locuser, cmdbuf);
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if (errorstr == NULL)
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errorstr = "Login incorrect.\n";
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goto fail;
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@ -431,6 +423,9 @@ doit(fromp)
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if (chdir(pwd->pw_dir) < 0) {
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(void) chdir("/");
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#ifdef notdef
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syslog(LOG_INFO|LOG_AUTH,
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"%s@%s as %s: no home directory. cmd='%.80s'",
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remuser, hostname, locuser, cmdbuf);
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error("No remote directory.\n");
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exit(1);
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#endif
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@ -440,10 +435,9 @@ doit(fromp)
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if (use_kerberos) {
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if (pwd->pw_passwd != 0 && *pwd->pw_passwd != '\0') {
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if (kuserok(kdata, locuser) != 0) {
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syslog(LOG_NOTICE|LOG_AUTH,
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"Kerberos shell denied to %s.%s@%s on %s as %s: cmd='%s'; %s",
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kdata->pname, kdata->pinst, kdata->prealm,
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hostname, locuser, cmdbuf, errorstr);
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syslog(LOG_INFO|LOG_AUTH,
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"Kerberos rsh denied to %s.%s@%s",
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kdata->pname, kdata->pinst, kdata->prealm);
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error("Permission denied.\n");
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exit(1);
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}
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@ -453,18 +447,20 @@ doit(fromp)
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if (errorstr ||
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pwd->pw_passwd != 0 && *pwd->pw_passwd != '\0' &&
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ruserok(hostname, pwd->pw_uid == 0, remuser, locuser) < 0) {
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iruserok(fromp->sin_addr.s_addr, pwd->pw_uid == 0,
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remuser, locuser) < 0) {
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if (__rcmd_errstr)
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syslog(LOG_INFO|LOG_AUTH,
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"%s@%s as %s: permission denied (%s). cmd='%.80s'",
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remuser, hostname, locuser, __rcmd_errstr,
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cmdbuf);
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else
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syslog(LOG_INFO|LOG_AUTH,
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"%s@%s as %s: permission denied. cmd='%.80s'",
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remuser, hostname, locuser, cmdbuf);
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fail:
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if (errorstr == NULL)
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errorstr = "Permission denied.\n";
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/* log the (failed) rsh request, if paranoid */
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if (paranoid || (pwd && pwd->pw_uid == 0))
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syslog(LOG_INFO|LOG_AUTH,
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"rsh denied to %s@%s as %s: cmd='%s'; %s",
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remuser, hostname, locuser, cmdbuf,
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errorstr);
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error(errorstr, errorhost);
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exit(1);
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}
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@ -474,7 +470,7 @@ fail:
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exit(1);
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}
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(void) write(2, "\0", 1);
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(void) write(STDERR_FILENO, "\0", 1);
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sent_null = 1;
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if (port) {
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|
|
@ -508,15 +504,17 @@ fail:
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static char msg[] = SECURE_MESSAGE;
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(void) close(pv1[1]);
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(void) close(pv2[1]);
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des_write(s, msg, sizeof(msg));
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des_write(s, msg, sizeof(msg) - 1);
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} else
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#endif
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#endif
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{
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(void) close(0); (void) close(1);
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(void) close(0);
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(void) close(1);
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}
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(void) close(2); (void) close(pv[1]);
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(void) close(2);
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(void) close(pv[1]);
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FD_ZERO(&readfrom);
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FD_SET(s, &readfrom);
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|
|
@ -600,12 +598,14 @@ fail:
|
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shutdown(pv1[0], 1+1);
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FD_CLR(pv1[0], &readfrom);
|
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} else
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(void) des_write(1, buf, cc);
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(void) des_write(STDOUT_FILENO,
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buf, cc);
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}
|
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|
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if (doencrypt && FD_ISSET(pv2[0], &wready)) {
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errno = 0;
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cc = des_read(0, buf, sizeof(buf));
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cc = des_read(STDIN_FILENO,
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buf, sizeof(buf));
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if (cc <= 0) {
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shutdown(pv2[0], 1+1);
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FD_CLR(pv2[0], &writeto);
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|
|
@ -625,7 +625,8 @@ fail:
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exit(0);
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}
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setpgrp(0, getpid());
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(void) close(s); (void) close(pv[0]);
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(void) close(s);
|
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(void) close(pv[0]);
|
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#ifdef CRYPT
|
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#ifdef KERBEROS
|
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if (doencrypt) {
|
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|
|
@ -654,59 +655,76 @@ fail:
|
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strcat(path, _PATH_DEFPATH);
|
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strncat(shell, pwd->pw_shell, sizeof(shell)-7);
|
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strncat(username, pwd->pw_name, sizeof(username)-6);
|
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cp = rindex(pwd->pw_shell, '/');
|
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cp = strrchr(pwd->pw_shell, '/');
|
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if (cp)
|
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cp++;
|
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else
|
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cp = pwd->pw_shell;
|
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endpwent();
|
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if (paranoid || pwd->pw_uid == 0) {
|
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if (log_success || pwd->pw_uid == 0) {
|
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#ifdef KERBEROS
|
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if (use_kerberos)
|
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syslog(LOG_INFO|LOG_AUTH,
|
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"Kerberos shell from %s.%s@%s on %s as %s: cmd='%s'",
|
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kdata->pname, kdata->pinst, kdata->prealm,
|
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hostname, locuser, cmdbuf);
|
||||
"Kerberos shell from %s.%s@%s on %s as %s, cmd='%.80s'",
|
||||
kdata->pname, kdata->pinst, kdata->prealm,
|
||||
hostname, locuser, cmdbuf);
|
||||
else
|
||||
#endif
|
||||
syslog(LOG_INFO|LOG_AUTH, "%s@%s as %s: cmd='%s'",
|
||||
syslog(LOG_INFO|LOG_AUTH, "%s@%s as %s: cmd='%.80s'",
|
||||
remuser, hostname, locuser, cmdbuf);
|
||||
}
|
||||
|
||||
|
||||
execl(pwd->pw_shell, cp, "-c", cmdbuf, 0);
|
||||
perror(pwd->pw_shell);
|
||||
exit(1);
|
||||
}
|
||||
|
||||
/*
|
||||
* Report error to client.
|
||||
* Note: can't be used until second socket has connected
|
||||
* to client, or older clients will hang waiting
|
||||
* for that connection first.
|
||||
* Report error to client. Note: can't be used until second socket has
|
||||
* connected to client, or older clients will hang waiting for that
|
||||
* connection first.
|
||||
*/
|
||||
/*VARARGS1*/
|
||||
error(fmt, a1, a2, a3)
|
||||
char *fmt;
|
||||
int a1, a2, a3;
|
||||
{
|
||||
char buf[BUFSIZ], *bp = buf;
|
||||
#if __STDC__
|
||||
#include <stdarg.h>
|
||||
#else
|
||||
#include <varargs.h>
|
||||
#endif
|
||||
|
||||
if (sent_null == 0)
|
||||
void
|
||||
#if __STDC__
|
||||
error(const char *fmt, ...)
|
||||
#else
|
||||
error(fmt, va_alist)
|
||||
char *fmt;
|
||||
va_dcl
|
||||
#endif
|
||||
{
|
||||
va_list ap;
|
||||
int len;
|
||||
char *bp, buf[BUFSIZ];
|
||||
#if __STDC__
|
||||
va_start(ap, fmt);
|
||||
#else
|
||||
va_start(ap);
|
||||
#endif
|
||||
bp = buf;
|
||||
if (sent_null == 0) {
|
||||
*bp++ = 1;
|
||||
(void) sprintf(bp, fmt, a1, a2, a3);
|
||||
(void) write(2, buf, strlen(buf));
|
||||
len = 1;
|
||||
} else
|
||||
len = 0;
|
||||
(void)vsnprintf(bp, sizeof(buf) - 1, fmt, ap);
|
||||
(void)write(STDERR_FILENO, buf, len + strlen(bp));
|
||||
}
|
||||
|
||||
void
|
||||
getstr(buf, cnt, err)
|
||||
char *buf;
|
||||
char *buf, *err;
|
||||
int cnt;
|
||||
char *err;
|
||||
{
|
||||
char c;
|
||||
|
||||
do {
|
||||
if (read(0, &c, 1) != 1)
|
||||
if (read(STDIN_FILENO, &c, 1) != 1)
|
||||
exit(1);
|
||||
*buf++ = c;
|
||||
if (--cnt == 0) {
|
||||
|
|
@ -724,27 +742,27 @@ getstr(buf, cnt, err)
|
|||
* assume that the host is local, as it will be
|
||||
* interpreted as such.
|
||||
*/
|
||||
int
|
||||
local_domain(h)
|
||||
char *h;
|
||||
{
|
||||
char localhost[MAXHOSTNAMELEN];
|
||||
char *p1, *p2, *topdomain();
|
||||
char *p1, *p2;
|
||||
|
||||
localhost[0] = 0;
|
||||
(void) gethostname(localhost, sizeof(localhost));
|
||||
p1 = topdomain(localhost);
|
||||
p2 = topdomain(h);
|
||||
if (p1 == NULL || p2 == NULL || !strcasecmp(p1, p2))
|
||||
return(1);
|
||||
return(0);
|
||||
return (1);
|
||||
return (0);
|
||||
}
|
||||
|
||||
char *
|
||||
topdomain(h)
|
||||
char *h;
|
||||
{
|
||||
register char *p;
|
||||
char *maybe = NULL;
|
||||
char *p, *maybe = NULL;
|
||||
int dots = 0;
|
||||
|
||||
for (p = h + strlen(h); p >= h; p--) {
|
||||
|
|
@ -757,7 +775,10 @@ topdomain(h)
|
|||
return (maybe);
|
||||
}
|
||||
|
||||
void
|
||||
usage()
|
||||
{
|
||||
|
||||
syslog(LOG_ERR, "usage: rshd [-%s]", OPTIONS);
|
||||
exit(2);
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue