1 /* $NetBSD: rexec.c,v 1.3 2007/12/15 19:44:46 perry Exp $ */ 2 3 /*- 4 * Copyright (c) 2005 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Christos Zoulas. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 #include <sys/cdefs.h> 39 __RCSID("$NetBSD: rexec.c,v 1.3 2007/12/15 19:44:46 perry Exp $"); 40 41 #include <stdio.h> 42 #include <netdb.h> 43 #include <stdlib.h> 44 #include <unistd.h> 45 #include <err.h> 46 47 static void usage(void) __dead; 48 /*XXX*/ 49 int rexec(char **, int, char *, char *, char *, int *); 50 51 int 52 main(int argc, char **argv) 53 { 54 int c, s; 55 ssize_t nr; 56 struct servent *sv; 57 char *host = __UNCONST("localhost"); 58 char *user = __UNCONST("root"); 59 char *pass = __UNCONST("h@x0R"); 60 char *cmd = __UNCONST("ls"); 61 char line[BUFSIZ]; 62 63 while ((c = getopt(argc, argv, "h:u:p:c:")) != -1) 64 switch (c) { 65 case 'h': 66 host = optarg; 67 break; 68 case 'u': 69 user = optarg; 70 break; 71 case 'p': 72 pass = optarg; 73 break; 74 case 'c': 75 cmd = optarg; 76 break; 77 default: 78 usage(); 79 } 80 81 if ((sv = getservbyname("exec", "tcp")) == NULL) 82 errx(1, "Cannot find service exec/tcp"); 83 84 if ((s = rexec(&host, sv->s_port, user, pass, cmd, NULL)) == -1) 85 return 1; 86 while ((nr = read(s, line, sizeof(line))) > 0) 87 (void)write(STDOUT_FILENO, line, nr); 88 if (nr == -1) 89 err(1, "read failed"); 90 return 0; 91 } 92 93 static void 94 usage(void) 95 { 96 (void)fprintf(stderr, "Usage: %s [-u <user>] [-p <password>]" 97 "[-h <hostname>] [-c <cmd>]\n", getprogname()); 98 exit(1); 99 } 100