/*
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/*
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* Copyright (c) 1980, 1993
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* Copyright (c) 1980, 1993
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* The Regents of the University of California. All rights reserved.
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* The Regents of the University of California. All rights reserved.
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*
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*
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* Redistribution and use in source and binary forms, with or without
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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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* modification, are permitted provided that the following conditions
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* are met:
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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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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* 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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* 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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* 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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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of the University nor the names of 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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* 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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* without specific prior written permission.
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*
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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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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* 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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* 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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* 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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* 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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* 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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* 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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* 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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* 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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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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* SUCH DAMAGE.
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*/
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*/
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#if defined(LIBC_SCCS) && !defined(lint)
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#if defined(LIBC_SCCS) && !defined(lint)
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static char sccsid[] = "@(#)rexec.c 8.1 (Berkeley) 6/4/93";
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static char sccsid[] = "@(#)rexec.c 8.1 (Berkeley) 6/4/93";
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#endif /* LIBC_SCCS and not lint */
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#endif /* LIBC_SCCS and not lint */
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#include <sys/types.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <netinet/in.h>
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#include <alloca.h>
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#include <alloca.h>
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#include <stdio.h>
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#include <stdio.h>
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#include <netdb.h>
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#include <netdb.h>
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#include <errno.h>
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#include <errno.h>
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#include <stdlib.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 <unistd.h>
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#include <sys/uio.h>
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#include <sys/uio.h>
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#include "libc-symbols.h"
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#include "libc-symbols.h"
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int rexecoptions;
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int rexecoptions;
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libc_freeres_ptr (static char *ahostbuf);
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libc_freeres_ptr (static char *ahostbuf);
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int
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int
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rexec_af(ahost, rport, name, pass, cmd, fd2p, af)
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rexec_af(ahost, rport, name, pass, cmd, fd2p, af)
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char **ahost;
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char **ahost;
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int rport;
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int rport;
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const char *name, *pass, *cmd;
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const char *name, *pass, *cmd;
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int *fd2p;
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int *fd2p;
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sa_family_t af;
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sa_family_t af;
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{
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{
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struct sockaddr_storage sa2, from;
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struct sockaddr_storage sa2, from;
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struct addrinfo hints, *res0;
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struct addrinfo hints, *res0;
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const char *orig_name = name;
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const char *orig_name = name;
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const char *orig_pass = pass;
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const char *orig_pass = pass;
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u_short port = 0;
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u_short port = 0;
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int s, timo = 1, s3;
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int s, timo = 1, s3;
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char c;
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char c;
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int gai;
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int gai;
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char servbuff[NI_MAXSERV];
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char servbuff[NI_MAXSERV];
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snprintf(servbuff, sizeof(servbuff), "%d", ntohs(rport));
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snprintf(servbuff, sizeof(servbuff), "%d", ntohs(rport));
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servbuff[sizeof(servbuff) - 1] = '\0';
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servbuff[sizeof(servbuff) - 1] = '\0';
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memset(&hints, '\0', sizeof(hints));
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memset(&hints, '\0', sizeof(hints));
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hints.ai_family = af;
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hints.ai_family = af;
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hints.ai_socktype = SOCK_STREAM;
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hints.ai_socktype = SOCK_STREAM;
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hints.ai_flags = AI_CANONNAME;
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hints.ai_flags = AI_CANONNAME;
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gai = getaddrinfo(*ahost, servbuff, &hints, &res0);
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gai = getaddrinfo(*ahost, servbuff, &hints, &res0);
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if (gai){
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if (gai){
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/* XXX: set errno? */
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/* XXX: set errno? */
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return -1;
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return -1;
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}
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}
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if (res0->ai_canonname){
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if (res0->ai_canonname){
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free (ahostbuf);
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free (ahostbuf);
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ahostbuf = strdup (res0->ai_canonname);
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ahostbuf = strdup (res0->ai_canonname);
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if (ahostbuf == NULL) {
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if (ahostbuf == NULL) {
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perror ("rexec: strdup");
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perror ("rexec: strdup");
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return (-1);
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return (-1);
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}
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}
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*ahost = ahostbuf;
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*ahost = ahostbuf;
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} else
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} else
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*ahost = NULL;
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*ahost = NULL;
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ruserpass(res0->ai_canonname, &name, &pass);
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ruserpass(res0->ai_canonname, &name, &pass);
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retry:
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retry:
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s = socket(res0->ai_family, res0->ai_socktype, 0);
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s = socket(res0->ai_family, res0->ai_socktype, 0);
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if (s < 0) {
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if (s < 0) {
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perror("rexec: socket");
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perror("rexec: socket");
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return (-1);
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return (-1);
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}
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}
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if (connect(s, res0->ai_addr, res0->ai_addrlen) < 0) {
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if (connect(s, res0->ai_addr, res0->ai_addrlen) < 0) {
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if (errno == ECONNREFUSED && timo <= 16) {
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if (errno == ECONNREFUSED && timo <= 16) {
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(void) __close(s);
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(void) __close(s);
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sleep(timo);
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sleep(timo);
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timo *= 2;
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timo *= 2;
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goto retry;
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goto retry;
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}
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}
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perror(res0->ai_canonname);
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perror(res0->ai_canonname);
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return (-1);
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return (-1);
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}
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}
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if (fd2p == 0) {
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if (fd2p == 0) {
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(void) write(s, "", 1);
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(void) write(s, "", 1);
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port = 0;
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port = 0;
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} else {
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} else {
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char num[32];
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char num[32];
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int s2, sa2len;
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int s2, sa2len;
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s2 = socket(res0->ai_family, res0->ai_socktype, 0);
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s2 = socket(res0->ai_family, res0->ai_socktype, 0);
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if (s2 < 0) {
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if (s2 < 0) {
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(void) __close(s);
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(void) __close(s);
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return (-1);
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return (-1);
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}
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}
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listen(s2, 1);
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listen(s2, 1);
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sa2len = sizeof (sa2);
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sa2len = sizeof (sa2);
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if (getsockname(s2, (struct sockaddr *)&sa2, &sa2len) < 0) {
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if (getsockname(s2, (struct sockaddr *)&sa2, &sa2len) < 0) {
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perror("getsockname");
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perror("getsockname");
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(void) __close(s2);
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(void) __close(s2);
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goto bad;
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goto bad;
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#ifdef SA_LEN
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#ifdef SA_LEN
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} else if (sa2len != SA_LEN((struct sockaddr *)&sa2)) {
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} else if (sa2len != SA_LEN((struct sockaddr *)&sa2)) {
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__set_errno(EINVAL);
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__set_errno(EINVAL);
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(void) __close(s2);
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(void) __close(s2);
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goto bad;
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goto bad;
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#endif
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#endif
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}
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}
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port = 0;
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port = 0;
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if (!getnameinfo((struct sockaddr *)&sa2, sa2len,
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if (!getnameinfo((struct sockaddr *)&sa2, sa2len,
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NULL, 0, servbuff, sizeof(servbuff),
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NULL, 0, servbuff, sizeof(servbuff),
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NI_NUMERICSERV))
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NI_NUMERICSERV))
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port = atoi(servbuff);
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port = atoi(servbuff);
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(void) sprintf(num, "%u", port);
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(void) sprintf(num, "%u", port);
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(void) __write(s, num, strlen(num)+1);
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(void) __write(s, num, strlen(num)+1);
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{ int len = sizeof (from);
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{ int len = sizeof (from);
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s3 = TEMP_FAILURE_RETRY (accept(s2, (struct sockaddr *)&from,
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s3 = TEMP_FAILURE_RETRY (accept(s2, (struct sockaddr *)&from,
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&len));
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&len));
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__close(s2);
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__close(s2);
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if (s3 < 0) {
|
if (s3 < 0) {
|
perror("accept");
|
perror("accept");
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port = 0;
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port = 0;
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goto bad;
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goto bad;
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}
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}
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}
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}
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*fd2p = s3;
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*fd2p = s3;
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}
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}
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|
|
struct iovec iov[3] =
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struct iovec iov[3] =
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{
|
{
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[0] = { .iov_base = (void *) name, .iov_len = strlen (name) + 1 },
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[0] = { .iov_base = (void *) name, .iov_len = strlen (name) + 1 },
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/* should public key encypt the password here */
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/* should public key encypt the password here */
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[1] = { .iov_base = (void *) pass, .iov_len = strlen (pass) + 1 },
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[1] = { .iov_base = (void *) pass, .iov_len = strlen (pass) + 1 },
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[2] = { .iov_base = (void *) cmd, .iov_len = strlen (cmd) + 1 }
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[2] = { .iov_base = (void *) cmd, .iov_len = strlen (cmd) + 1 }
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};
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};
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(void) TEMP_FAILURE_RETRY (writev (s, iov, 3));
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(void) TEMP_FAILURE_RETRY (writev (s, iov, 3));
|
|
|
/* We don't need the memory allocated for the name and the password
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/* We don't need the memory allocated for the name and the password
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in ruserpass anymore. */
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in ruserpass anymore. */
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if (name != orig_name)
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if (name != orig_name)
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free ((char *) name);
|
free ((char *) name);
|
if (pass != orig_pass)
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if (pass != orig_pass)
|
free ((char *) pass);
|
free ((char *) pass);
|
|
|
if (__read(s, &c, 1) != 1) {
|
if (__read(s, &c, 1) != 1) {
|
perror(*ahost);
|
perror(*ahost);
|
goto bad;
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goto bad;
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}
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}
|
if (c != 0) {
|
if (c != 0) {
|
while (__read(s, &c, 1) == 1) {
|
while (__read(s, &c, 1) == 1) {
|
(void) __write(2, &c, 1);
|
(void) __write(2, &c, 1);
|
if (c == '\n')
|
if (c == '\n')
|
break;
|
break;
|
}
|
}
|
goto bad;
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goto bad;
|
}
|
}
|
freeaddrinfo(res0);
|
freeaddrinfo(res0);
|
return (s);
|
return (s);
|
bad:
|
bad:
|
if (port)
|
if (port)
|
(void) __close(*fd2p);
|
(void) __close(*fd2p);
|
(void) __close(s);
|
(void) __close(s);
|
freeaddrinfo(res0);
|
freeaddrinfo(res0);
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return (-1);
|
return (-1);
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}
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}
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libc_hidden_def (rexec_af)
|
libc_hidden_def (rexec_af)
|
|
|
int
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int
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rexec(ahost, rport, name, pass, cmd, fd2p)
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rexec(ahost, rport, name, pass, cmd, fd2p)
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char **ahost;
|
char **ahost;
|
int rport;
|
int rport;
|
const char *name, *pass, *cmd;
|
const char *name, *pass, *cmd;
|
int *fd2p;
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int *fd2p;
|
{
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{
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return rexec_af(ahost, rport, name, pass, cmd, fd2p, AF_INET);
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return rexec_af(ahost, rport, name, pass, cmd, fd2p, AF_INET);
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}
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}
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|
|
