/* * Copyright (c) 1999 Apple Computer, Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * * Portions Copyright (c) 1999 Apple Computer, Inc. All Rights * Reserved. This file contains Original Code and/or Modifications of * Original Code as defined in and that are subject to the Apple Public * Source License Version 1.1 (the "License"). You may not use this file * except in compliance with the License. Please obtain a copy of the * License at http://www.apple.com/publicsource and read it before using * this file. * * The Original Code and all software distributed under the License are * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE OR NON- INFRINGEMENT. Please see the * License for the specific language governing rights and limitations * under the License. * * @APPLE_LICENSE_HEADER_END@ */ /*- * Copyright (c) 1992 The Regents of the University of California. * All rights reserved. * * This code is derived from software contributed to Berkeley by * James da Silva at the University of Maryland at College Park. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include <sys/types.h> #include <sys/socket.h> #include <netinet/in.h> #include <stdio.h> #include <string.h> #include <unistd.h> #include <netdb.h> #include <errno.h> char *index(); int rexecoptions; char *getpass(), *getlogin(); int rexec(ahost, rport, name, pass, cmd, fd2p) char **ahost; int rport; char *name, *pass, *cmd; int *fd2p; { struct sockaddr_in sin, sin2, from; struct hostent *hp; u_short port; int s, timo = 1, s3; char c; hp = gethostbyname(*ahost); if (hp == 0) { herror(*ahost); return (-1); } *ahost = hp->h_name; ruserpass(hp->h_name, &name, &pass); retry: s = socket(AF_INET, SOCK_STREAM, 0); if (s < 0) { perror("rexec: socket"); return (-1); } sin.sin_family = hp->h_addrtype; sin.sin_port = rport; bcopy(hp->h_addr, (caddr_t)&sin.sin_addr, hp->h_length); if (connect(s, (struct sockaddr *)&sin, sizeof(sin)) < 0) { if (errno == ECONNREFUSED && timo <= 16) { (void) close(s); sleep(timo); timo *= 2; goto retry; } perror(hp->h_name); return (-1); } if (fd2p == 0) { (void) write(s, "", 1); port = 0; } else { char num[8]; int s2, sin2len; s2 = socket(AF_INET, SOCK_STREAM, 0); if (s2 < 0) { (void) close(s); return (-1); } listen(s2, 1); sin2len = sizeof (sin2); if (getsockname(s2, (struct sockaddr *)&sin2, &sin2len) < 0 || sin2len != sizeof (sin2)) { perror("getsockname"); (void) close(s2); goto bad; } port = ntohs((u_short)sin2.sin_port); (void) sprintf(num, "%u", port); (void) write(s, num, strlen(num)+1); { int len = sizeof (from); s3 = accept(s2, (struct sockaddr *)&from, &len); close(s2); if (s3 < 0) { perror("accept"); port = 0; goto bad; } } *fd2p = s3; } (void) write(s, name, strlen(name) + 1); /* should public key encypt the password here */ (void) write(s, pass, strlen(pass) + 1); (void) write(s, cmd, strlen(cmd) + 1); if (read(s, &c, 1) != 1) { perror(*ahost); goto bad; } if (c != 0) { while (read(s, &c, 1) == 1) { (void) write(2, &c, 1); if (c == '\n') break; } goto bad; } return (s); bad: if (port) (void) close(*fd2p); (void) close(s); return (-1); }