930 lines
21 KiB
C
930 lines
21 KiB
C
/* $NetBSD: rcp.c,v 1.19 1997/10/21 13:47:17 christos Exp $ */
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/*
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* Copyright (c) 1983, 1990, 1992, 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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* 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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University 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 THE REGENTS 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 THE REGENTS 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 <sys/cdefs.h>
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#ifndef lint
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__COPYRIGHT("@(#) Copyright (c) 1983, 1990, 1992, 1993\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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#if 0
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static char sccsid[] = "@(#)rcp.c 8.2 (Berkeley) 4/2/94";
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#else
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__RCSID("$NetBSD: rcp.c,v 1.19 1997/10/21 13:47:17 christos Exp $");
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#endif
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#endif /* not lint */
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#include <sys/param.h>
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#include <sys/stat.h>
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#include <sys/time.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <netinet/in_systm.h>
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#include <netinet/ip.h>
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#include <ctype.h>
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#include <dirent.h>
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#include <err.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <netdb.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 <string.h>
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#include <unistd.h>
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#include "pathnames.h"
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#include "extern.h"
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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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char dst_realm_buf[REALM_SZ];
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char *dest_realm = NULL;
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int use_kerberos = 1;
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CREDENTIALS cred;
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Key_schedule schedule;
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extern char *krb_realmofhost();
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#ifdef CRYPT
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int doencrypt = 0;
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#define OPTIONS "dfKk:prtx"
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#else
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#define OPTIONS "dfKk:prt"
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#endif
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#else
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#define OPTIONS "dfprt"
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#endif
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struct passwd *pwd;
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char *pwname;
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u_short port;
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uid_t userid;
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int errs, rem;
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int pflag, iamremote, iamrecursive, targetshouldbedirectory;
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#define CMDNEEDS 64
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char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */
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#ifdef KERBEROS
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int kerberos __P((char **, char *, char *, char *));
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void oldw __P((const char *, ...));
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#endif
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int response __P((void));
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void rsource __P((char *, struct stat *));
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void sink __P((int, char *[]));
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void source __P((int, char *[]));
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void tolocal __P((int, char *[]));
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void toremote __P((char *, int, char *[]));
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void usage __P((void));
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int main __P((int, char *[]));
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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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struct servent *sp;
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int ch, fflag, tflag;
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char *targ, *shell;
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fflag = tflag = 0;
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while ((ch = getopt(argc, argv, OPTIONS)) != -1)
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switch(ch) { /* User-visible flags. */
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case 'K':
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#ifdef KERBEROS
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use_kerberos = 0;
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#endif
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break;
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#ifdef KERBEROS
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case 'k':
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dest_realm = dst_realm_buf;
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(void)strncpy(dst_realm_buf, optarg, REALM_SZ);
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break;
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#ifdef CRYPT
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case 'x':
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doencrypt = 1;
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/* des_set_key(cred.session, schedule); */
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break;
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#endif
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#endif
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case 'p':
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pflag = 1;
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break;
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case 'r':
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iamrecursive = 1;
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break;
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/* Server options. */
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case 'd':
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targetshouldbedirectory = 1;
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break;
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case 'f': /* "from" */
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iamremote = 1;
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fflag = 1;
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break;
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case 't': /* "to" */
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iamremote = 1;
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tflag = 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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}
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argc -= optind;
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argv += optind;
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#ifdef KERBEROS
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if (use_kerberos) {
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#ifdef CRYPT
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shell = doencrypt ? "ekshell" : "kshell";
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#else
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shell = "kshell";
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#endif
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if ((sp = getservbyname(shell, "tcp")) == NULL) {
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use_kerberos = 0;
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oldw("can't get entry for %s/tcp service", shell);
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sp = getservbyname(shell = "shell", "tcp");
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}
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} else
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sp = getservbyname(shell = "shell", "tcp");
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#else
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sp = getservbyname(shell = "shell", "tcp");
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#endif
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if (sp == NULL)
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errx(1, "%s/tcp: unknown service", shell);
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port = sp->s_port;
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if ((pwd = getpwuid(userid = getuid())) == NULL)
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errx(1, "unknown user %d", (int)userid);
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if ((pwname = strdup(pwd->pw_name)) == NULL)
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err(1, "%s", "");
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rem = STDIN_FILENO; /* XXX */
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if (fflag) { /* Follow "protocol", send data. */
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(void)response();
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source(argc, argv);
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exit(errs);
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}
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if (tflag) { /* Receive data. */
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sink(argc, argv);
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exit(errs);
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}
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if (argc < 2)
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usage();
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if (argc > 2)
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targetshouldbedirectory = 1;
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rem = -1;
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/* Command to be executed on remote system using "rsh". */
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#ifdef KERBEROS
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(void)snprintf(cmd, sizeof(cmd),
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"rcp%s%s%s%s", iamrecursive ? " -r" : "",
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#ifdef CRYPT
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(doencrypt && use_kerberos ? " -x" : ""),
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#else
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"",
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#endif
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pflag ? " -p" : "", targetshouldbedirectory ? " -d" : "");
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#else
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(void)snprintf(cmd, sizeof(cmd), "rcp%s%s%s",
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iamrecursive ? " -r" : "", pflag ? " -p" : "",
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targetshouldbedirectory ? " -d" : "");
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#endif
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(void)signal(SIGPIPE, lostconn);
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if ((targ = colon(argv[argc - 1])) != NULL)/* Dest is remote host. */
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toremote(targ, argc, argv);
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else {
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tolocal(argc, argv); /* Dest is local host. */
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if (targetshouldbedirectory)
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verifydir(argv[argc - 1]);
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}
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exit(errs);
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}
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void
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toremote(targ, argc, argv)
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char *targ, *argv[];
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int argc;
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{
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int i, len;
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char *bp, *host, *src, *suser, *thost, *tuser;
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*targ++ = 0;
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if (*targ == 0)
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targ = ".";
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if ((thost = strchr(argv[argc - 1], '@')) != NULL) {
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/* user@host */
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*thost++ = 0;
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tuser = argv[argc - 1];
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if (*tuser == '\0')
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tuser = NULL;
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else if (!okname(tuser))
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exit(1);
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} else {
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thost = argv[argc - 1];
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tuser = NULL;
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}
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for (i = 0; i < argc - 1; i++) {
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src = colon(argv[i]);
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if (src) { /* remote to remote */
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*src++ = 0;
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if (*src == 0)
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src = ".";
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host = strchr(argv[i], '@');
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len = strlen(_PATH_RSH) + strlen(argv[i]) +
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strlen(src) + (tuser ? strlen(tuser) : 0) +
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strlen(thost) + strlen(targ) + CMDNEEDS + 20;
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if (!(bp = malloc(len)))
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err(1, "%s", "");
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if (host) {
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*host++ = 0;
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suser = argv[i];
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if (*suser == '\0')
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suser = pwname;
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else if (!okname(suser))
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continue;
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(void)snprintf(bp, len,
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"%s %s -l %s -n %s %s '%s%s%s:%s'",
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_PATH_RSH, host, suser, cmd, src,
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tuser ? tuser : "", tuser ? "@" : "",
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thost, targ);
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} else
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(void)snprintf(bp, len,
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"exec %s %s -n %s %s '%s%s%s:%s'",
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_PATH_RSH, argv[i], cmd, src,
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tuser ? tuser : "", tuser ? "@" : "",
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thost, targ);
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(void)susystem(bp);
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(void)free(bp);
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} else { /* local to remote */
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if (rem == -1) {
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len = strlen(targ) + CMDNEEDS + 20;
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if (!(bp = malloc(len)))
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err(1, "%s", "");
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(void)snprintf(bp, len, "%s -t %s", cmd, targ);
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host = thost;
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#ifdef KERBEROS
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if (use_kerberos)
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rem = kerberos(&host, bp, pwname,
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tuser ? tuser : pwname);
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else
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#endif
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rem = rcmd(&host, port, pwname,
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tuser ? tuser : pwname,
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bp, 0);
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if (rem < 0)
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exit(1);
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if (response() < 0)
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exit(1);
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(void)free(bp);
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}
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source(1, argv+i);
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}
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}
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}
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void
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tolocal(argc, argv)
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int argc;
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char *argv[];
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{
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int i, len;
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char *bp, *host, *src, *suser;
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for (i = 0; i < argc - 1; i++) {
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if (!(src = colon(argv[i]))) { /* Local to local. */
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len = strlen(_PATH_CP) + strlen(argv[i]) +
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strlen(argv[argc - 1]) + 20;
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if (!(bp = malloc(len)))
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err(1, "%s", "");
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(void)snprintf(bp, len, "exec %s%s%s %s %s", _PATH_CP,
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iamrecursive ? " -r" : "", pflag ? " -p" : "",
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argv[i], argv[argc - 1]);
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if (susystem(bp))
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++errs;
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(void)free(bp);
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continue;
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}
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*src++ = 0;
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if (*src == 0)
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src = ".";
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if ((host = strchr(argv[i], '@')) == NULL) {
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host = argv[i];
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suser = pwname;
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} else {
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*host++ = 0;
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suser = argv[i];
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if (*suser == '\0')
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suser = pwname;
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else if (!okname(suser))
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continue;
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}
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len = strlen(src) + CMDNEEDS + 20;
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if ((bp = malloc(len)) == NULL)
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err(1, "%s", "");
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(void)snprintf(bp, len, "%s -f %s", cmd, src);
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rem =
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#ifdef KERBEROS
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use_kerberos ?
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kerberos(&host, bp, pwname, suser) :
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#endif
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rcmd(&host, port, pwname, suser, bp, 0);
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(void)free(bp);
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if (rem < 0) {
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++errs;
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continue;
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}
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sink(1, argv + argc - 1);
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(void)close(rem);
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rem = -1;
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}
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}
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void
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source(argc, argv)
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int argc;
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char *argv[];
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{
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struct stat stb;
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static BUF buffer;
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BUF *bp;
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off_t i;
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int amt, fd, haderr, indx, result;
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char *last, *name, buf[BUFSIZ];
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for (indx = 0; indx < argc; ++indx) {
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name = argv[indx];
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if ((fd = open(name, O_RDONLY, 0)) < 0)
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goto syserr;
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if (fstat(fd, &stb)) {
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syserr: run_err("%s: %s", name, strerror(errno));
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goto next;
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}
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switch (stb.st_mode & S_IFMT) {
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case S_IFREG:
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break;
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case S_IFDIR:
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if (iamrecursive) {
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rsource(name, &stb);
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goto next;
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}
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/* FALLTHROUGH */
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default:
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run_err("%s: not a regular file", name);
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goto next;
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}
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if ((last = strrchr(name, '/')) == NULL)
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last = name;
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else
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++last;
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if (pflag) {
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/*
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* Make it compatible with possible future
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* versions expecting microseconds.
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*/
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(void)snprintf(buf, sizeof(buf), "T%ld %ld %ld %ld\n",
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(long)stb.st_mtimespec.tv_sec,
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(long)stb.st_mtimespec.tv_nsec / 1000,
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(long)stb.st_atimespec.tv_sec,
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(long)stb.st_atimespec.tv_nsec / 1000);
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(void)write(rem, buf, strlen(buf));
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if (response() < 0)
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goto next;
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}
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#define MODEMASK (S_ISUID|S_ISGID|S_ISTXT|S_IRWXU|S_IRWXG|S_IRWXO)
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(void)snprintf(buf, sizeof(buf), "C%04o %qd %s\n",
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stb.st_mode & MODEMASK, (long long)stb.st_size, last);
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(void)write(rem, buf, strlen(buf));
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if (response() < 0)
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goto next;
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if ((bp = allocbuf(&buffer, fd, BUFSIZ)) == NULL) {
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next: (void)close(fd);
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continue;
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}
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/* Keep writing after an error so that we stay sync'd up. */
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for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
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amt = bp->cnt;
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if (i + amt > stb.st_size)
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amt = stb.st_size - i;
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if (!haderr) {
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result = read(fd, bp->buf, amt);
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if (result != amt)
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haderr = result >= 0 ? EIO : errno;
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}
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if (haderr)
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(void)write(rem, bp->buf, amt);
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else {
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result = write(rem, bp->buf, amt);
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if (result != amt)
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haderr = result >= 0 ? EIO : errno;
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}
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}
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if (close(fd) && !haderr)
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haderr = errno;
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if (!haderr)
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(void)write(rem, "", 1);
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else
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run_err("%s: %s", name, strerror(haderr));
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(void)response();
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}
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}
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void
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rsource(name, statp)
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char *name;
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struct stat *statp;
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{
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DIR *dirp;
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struct dirent *dp;
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char *last, *vect[1], path[MAXPATHLEN];
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if (!(dirp = opendir(name))) {
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run_err("%s: %s", name, strerror(errno));
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return;
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}
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last = strrchr(name, '/');
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if (last == 0)
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last = name;
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else
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last++;
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if (pflag) {
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(void)snprintf(path, sizeof(path), "T%ld %ld %ld %ld\n",
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(long)statp->st_mtimespec.tv_sec,
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(long)statp->st_mtimespec.tv_nsec / 1000,
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(long)statp->st_atimespec.tv_sec,
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(long)statp->st_atimespec.tv_nsec / 1000);
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(void)write(rem, path, strlen(path));
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if (response() < 0) {
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closedir(dirp);
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return;
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}
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}
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(void)snprintf(path, sizeof(path),
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"D%04o %d %s\n", statp->st_mode & MODEMASK, 0, last);
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(void)write(rem, path, strlen(path));
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if (response() < 0) {
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closedir(dirp);
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return;
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}
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while ((dp = readdir(dirp)) != NULL) {
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if (dp->d_ino == 0)
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continue;
|
|
if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
|
|
continue;
|
|
if (strlen(name) + 1 + strlen(dp->d_name) >= MAXPATHLEN - 1) {
|
|
run_err("%s/%s: name too long", name, dp->d_name);
|
|
continue;
|
|
}
|
|
(void)snprintf(path, sizeof(path), "%s/%s", name, dp->d_name);
|
|
vect[0] = path;
|
|
source(1, vect);
|
|
}
|
|
(void)closedir(dirp);
|
|
(void)write(rem, "E\n", 2);
|
|
(void)response();
|
|
}
|
|
|
|
void
|
|
sink(argc, argv)
|
|
int argc;
|
|
char *argv[];
|
|
{
|
|
static BUF buffer;
|
|
struct stat stb;
|
|
struct timeval tv[2];
|
|
enum { YES, NO, DISPLAYED } wrerr;
|
|
BUF *bp;
|
|
off_t i, j;
|
|
int amt, count, exists, first, mask, mode, ofd, omode;
|
|
int setimes, size, targisdir;
|
|
int wrerrno = 0; /* pacify gcc */
|
|
char ch, *cp, *np, *targ, *why, *vect[1], buf[BUFSIZ];
|
|
|
|
#define atime tv[0]
|
|
#define mtime tv[1]
|
|
#define SCREWUP(str) { why = str; goto screwup; }
|
|
|
|
setimes = targisdir = 0;
|
|
mask = umask(0);
|
|
if (!pflag)
|
|
(void)umask(mask);
|
|
if (argc != 1) {
|
|
run_err("ambiguous target");
|
|
exit(1);
|
|
}
|
|
targ = *argv;
|
|
if (targetshouldbedirectory)
|
|
verifydir(targ);
|
|
(void)write(rem, "", 1);
|
|
if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
|
|
targisdir = 1;
|
|
for (first = 1;; first = 0) {
|
|
cp = buf;
|
|
if (read(rem, cp, 1) <= 0)
|
|
return;
|
|
if (*cp++ == '\n')
|
|
SCREWUP("unexpected <newline>");
|
|
do {
|
|
if (read(rem, &ch, sizeof(ch)) != sizeof(ch))
|
|
SCREWUP("lost connection");
|
|
*cp++ = ch;
|
|
} while (cp < &buf[BUFSIZ - 1] && ch != '\n');
|
|
*cp = 0;
|
|
|
|
if (buf[0] == '\01' || buf[0] == '\02') {
|
|
if (iamremote == 0)
|
|
(void)write(STDERR_FILENO,
|
|
buf + 1, strlen(buf + 1));
|
|
if (buf[0] == '\02')
|
|
exit(1);
|
|
++errs;
|
|
continue;
|
|
}
|
|
if (buf[0] == 'E') {
|
|
(void)write(rem, "", 1);
|
|
return;
|
|
}
|
|
|
|
if (ch == '\n')
|
|
*--cp = 0;
|
|
|
|
#define getnum(t) (t) = 0; while (isdigit(*cp)) (t) = (t) * 10 + (*cp++ - '0');
|
|
cp = buf;
|
|
if (*cp == 'T') {
|
|
setimes++;
|
|
cp++;
|
|
getnum(mtime.tv_sec);
|
|
if (*cp++ != ' ')
|
|
SCREWUP("mtime.sec not delimited");
|
|
getnum(mtime.tv_usec);
|
|
if (*cp++ != ' ')
|
|
SCREWUP("mtime.usec not delimited");
|
|
getnum(atime.tv_sec);
|
|
if (*cp++ != ' ')
|
|
SCREWUP("atime.sec not delimited");
|
|
getnum(atime.tv_usec);
|
|
if (*cp++ != '\0')
|
|
SCREWUP("atime.usec not delimited");
|
|
(void)write(rem, "", 1);
|
|
continue;
|
|
}
|
|
if (*cp != 'C' && *cp != 'D') {
|
|
/*
|
|
* Check for the case "rcp remote:foo\* local:bar".
|
|
* In this case, the line "No match." can be returned
|
|
* by the shell before the rcp command on the remote is
|
|
* executed so the ^Aerror_message convention isn't
|
|
* followed.
|
|
*/
|
|
if (first) {
|
|
run_err("%s", cp);
|
|
exit(1);
|
|
}
|
|
SCREWUP("expected control record");
|
|
}
|
|
mode = 0;
|
|
for (++cp; cp < buf + 5; cp++) {
|
|
if (*cp < '0' || *cp > '7')
|
|
SCREWUP("bad mode");
|
|
mode = (mode << 3) | (*cp - '0');
|
|
}
|
|
if (*cp++ != ' ')
|
|
SCREWUP("mode not delimited");
|
|
|
|
for (size = 0; isdigit(*cp);)
|
|
size = size * 10 + (*cp++ - '0');
|
|
if (*cp++ != ' ')
|
|
SCREWUP("size not delimited");
|
|
if (targisdir) {
|
|
static char *namebuf;
|
|
static int cursize;
|
|
size_t need;
|
|
|
|
need = strlen(targ) + strlen(cp) + 250;
|
|
if (need > cursize) {
|
|
if (!(namebuf = malloc(need)))
|
|
run_err("%s", strerror(errno));
|
|
}
|
|
(void)snprintf(namebuf, need, "%s%s%s", targ,
|
|
*targ ? "/" : "", cp);
|
|
np = namebuf;
|
|
} else
|
|
np = targ;
|
|
exists = stat(np, &stb) == 0;
|
|
if (buf[0] == 'D') {
|
|
int mod_flag = pflag;
|
|
if (exists) {
|
|
if (!S_ISDIR(stb.st_mode)) {
|
|
errno = ENOTDIR;
|
|
goto bad;
|
|
}
|
|
if (pflag)
|
|
(void)chmod(np, mode);
|
|
} else {
|
|
/* Handle copying from a read-only directory */
|
|
mod_flag = 1;
|
|
if (mkdir(np, mode | S_IRWXU) < 0)
|
|
goto bad;
|
|
}
|
|
vect[0] = np;
|
|
sink(1, vect);
|
|
if (setimes) {
|
|
setimes = 0;
|
|
if (utimes(np, tv) < 0)
|
|
run_err("%s: set times: %s",
|
|
np, strerror(errno));
|
|
}
|
|
if (mod_flag)
|
|
(void)chmod(np, mode);
|
|
continue;
|
|
}
|
|
omode = mode;
|
|
mode |= S_IWRITE;
|
|
if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) < 0) {
|
|
bad: run_err("%s: %s", np, strerror(errno));
|
|
continue;
|
|
}
|
|
(void)write(rem, "", 1);
|
|
if ((bp = allocbuf(&buffer, ofd, BUFSIZ)) == NULL) {
|
|
(void)close(ofd);
|
|
continue;
|
|
}
|
|
cp = bp->buf;
|
|
wrerr = NO;
|
|
for (count = i = 0; i < size; i += BUFSIZ) {
|
|
amt = BUFSIZ;
|
|
if (i + amt > size)
|
|
amt = size - i;
|
|
count += amt;
|
|
do {
|
|
j = read(rem, cp, amt);
|
|
if (j <= 0) {
|
|
run_err("%s", j ? strerror(errno) :
|
|
"dropped connection");
|
|
exit(1);
|
|
}
|
|
amt -= j;
|
|
cp += j;
|
|
} while (amt > 0);
|
|
if (count == bp->cnt) {
|
|
/* Keep reading so we stay sync'd up. */
|
|
if (wrerr == NO) {
|
|
j = write(ofd, bp->buf, count);
|
|
if (j != count) {
|
|
wrerr = YES;
|
|
wrerrno = j >= 0 ? EIO : errno;
|
|
}
|
|
}
|
|
count = 0;
|
|
cp = bp->buf;
|
|
}
|
|
}
|
|
if (count != 0 && wrerr == NO &&
|
|
(j = write(ofd, bp->buf, count)) != count) {
|
|
wrerr = YES;
|
|
wrerrno = j >= 0 ? EIO : errno;
|
|
}
|
|
if (ftruncate(ofd, size)) {
|
|
run_err("%s: truncate: %s", np, strerror(errno));
|
|
wrerr = DISPLAYED;
|
|
}
|
|
if (pflag) {
|
|
if (exists || omode != mode)
|
|
if (fchmod(ofd, omode))
|
|
run_err("%s: set mode: %s",
|
|
np, strerror(errno));
|
|
} else {
|
|
if (!exists && omode != mode)
|
|
if (fchmod(ofd, omode & ~mask))
|
|
run_err("%s: set mode: %s",
|
|
np, strerror(errno));
|
|
}
|
|
if (setimes && wrerr == NO) {
|
|
setimes = 0;
|
|
if (futimes(ofd, tv) < 0) {
|
|
run_err("%s: set times: %s",
|
|
np, strerror(errno));
|
|
wrerr = DISPLAYED;
|
|
}
|
|
}
|
|
(void)close(ofd);
|
|
(void)response();
|
|
switch(wrerr) {
|
|
case YES:
|
|
run_err("%s: write: %s", np, strerror(wrerrno));
|
|
break;
|
|
case NO:
|
|
(void)write(rem, "", 1);
|
|
break;
|
|
case DISPLAYED:
|
|
break;
|
|
}
|
|
}
|
|
screwup:
|
|
run_err("protocol error: %s", why);
|
|
exit(1);
|
|
}
|
|
|
|
#ifdef KERBEROS
|
|
int
|
|
kerberos(host, bp, locuser, user)
|
|
char **host, *bp, *locuser, *user;
|
|
{
|
|
struct servent *sp;
|
|
|
|
again:
|
|
if (use_kerberos) {
|
|
rem = KSUCCESS;
|
|
errno = 0;
|
|
if (dest_realm == NULL)
|
|
dest_realm = krb_realmofhost(*host);
|
|
rem =
|
|
#ifdef CRYPT
|
|
doencrypt ?
|
|
krcmd_mutual(host,
|
|
port, user, bp, 0, dest_realm, &cred, schedule) :
|
|
#endif
|
|
krcmd(host, port, user, bp, 0, dest_realm);
|
|
|
|
if (rem < 0) {
|
|
use_kerberos = 0;
|
|
if ((sp = getservbyname("shell", "tcp")) == NULL)
|
|
errx(1, "unknown service shell/tcp");
|
|
if (errno == ECONNREFUSED)
|
|
oldw("remote host doesn't support Kerberos");
|
|
else if (errno == ENOENT)
|
|
oldw("can't provide Kerberos authentication data");
|
|
port = sp->s_port;
|
|
goto again;
|
|
}
|
|
} else {
|
|
#ifdef CRYPT
|
|
if (doencrypt)
|
|
errx(1,
|
|
"the -x option requires Kerberos authentication");
|
|
#endif
|
|
rem = rcmd(host, port, locuser, user, bp, 0);
|
|
}
|
|
return (rem);
|
|
}
|
|
#endif /* KERBEROS */
|
|
|
|
int
|
|
response()
|
|
{
|
|
char ch, *cp, resp, rbuf[BUFSIZ];
|
|
|
|
if (read(rem, &resp, sizeof(resp)) != sizeof(resp))
|
|
lostconn(0);
|
|
|
|
cp = rbuf;
|
|
switch(resp) {
|
|
case 0: /* ok */
|
|
return (0);
|
|
default:
|
|
*cp++ = resp;
|
|
/* FALLTHROUGH */
|
|
case 1: /* error, followed by error msg */
|
|
case 2: /* fatal error, "" */
|
|
do {
|
|
if (read(rem, &ch, sizeof(ch)) != sizeof(ch))
|
|
lostconn(0);
|
|
*cp++ = ch;
|
|
} while (cp < &rbuf[BUFSIZ] && ch != '\n');
|
|
|
|
if (!iamremote)
|
|
(void)write(STDERR_FILENO, rbuf, cp - rbuf);
|
|
++errs;
|
|
if (resp == 1)
|
|
return (-1);
|
|
exit(1);
|
|
}
|
|
/* NOTREACHED */
|
|
}
|
|
|
|
void
|
|
usage()
|
|
{
|
|
#ifdef KERBEROS
|
|
#ifdef CRYPT
|
|
(void)fprintf(stderr, "%s\n\t%s\n",
|
|
"usage: rcp [-Kpx] [-k realm] f1 f2",
|
|
"or: rcp [-Kprx] [-k realm] f1 ... fn directory");
|
|
#else
|
|
(void)fprintf(stderr, "%s\n\t%s\n",
|
|
"usage: rcp [-Kp] [-k realm] f1 f2",
|
|
"or: rcp [-Kpr] [-k realm] f1 ... fn directory");
|
|
#endif
|
|
#else
|
|
(void)fprintf(stderr,
|
|
"usage: rcp [-p] f1 f2; or: rcp [-pr] f1 ... fn directory\n");
|
|
#endif
|
|
exit(1);
|
|
}
|
|
|
|
#if __STDC__
|
|
#include <stdarg.h>
|
|
#else
|
|
#include <varargs.h>
|
|
#endif
|
|
|
|
#ifdef KERBEROS
|
|
void
|
|
#if __STDC__
|
|
oldw(const char *fmt, ...)
|
|
#else
|
|
oldw(fmt, va_alist)
|
|
char *fmt;
|
|
va_dcl
|
|
#endif
|
|
{
|
|
va_list ap;
|
|
#if __STDC__
|
|
va_start(ap, fmt);
|
|
#else
|
|
va_start(ap);
|
|
#endif
|
|
(void)fprintf(stderr, "rcp: ");
|
|
(void)vfprintf(stderr, fmt, ap);
|
|
(void)fprintf(stderr, ", using standard rcp\n");
|
|
va_end(ap);
|
|
}
|
|
#endif
|
|
|
|
void
|
|
#if __STDC__
|
|
run_err(const char *fmt, ...)
|
|
#else
|
|
run_err(fmt, va_alist)
|
|
char *fmt;
|
|
va_dcl
|
|
#endif
|
|
{
|
|
static FILE *fp;
|
|
va_list ap;
|
|
#if __STDC__
|
|
va_start(ap, fmt);
|
|
#else
|
|
va_start(ap);
|
|
#endif
|
|
|
|
++errs;
|
|
if (fp == NULL && !(fp = fdopen(rem, "w")))
|
|
return;
|
|
(void)fprintf(fp, "%c", 0x01);
|
|
(void)fprintf(fp, "rcp: ");
|
|
(void)vfprintf(fp, fmt, ap);
|
|
(void)fprintf(fp, "\n");
|
|
(void)fflush(fp);
|
|
|
|
if (!iamremote)
|
|
vwarnx(fmt, ap);
|
|
|
|
va_end(ap);
|
|
}
|