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      1 /*	$NetBSD: rexec.c,v 1.4 2008/04/28 20:23:04 martin 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  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 #include <sys/cdefs.h>
     32 __RCSID("$NetBSD: rexec.c,v 1.4 2008/04/28 20:23:04 martin Exp $");
     33 
     34 #include <stdio.h>
     35 #include <netdb.h>
     36 #include <stdlib.h>
     37 #include <unistd.h>
     38 #include <err.h>
     39 
     40 static void usage(void) __dead;
     41 /*XXX*/
     42 int rexec(char **, int, char *, char *, char *, int *);
     43 
     44 int
     45 main(int argc, char **argv)
     46 {
     47 	int c, s;
     48 	ssize_t nr;
     49 	struct servent *sv;
     50 	char *host = __UNCONST("localhost");
     51 	char *user = __UNCONST("root");
     52 	char *pass = __UNCONST("h@x0R");
     53 	char *cmd  = __UNCONST("ls");
     54 	char line[BUFSIZ];
     55 
     56 	while ((c = getopt(argc, argv, "h:u:p:c:")) != -1)
     57 		switch (c) {
     58 		case 'h':
     59 			host = optarg;
     60 			break;
     61 		case 'u':
     62 			user = optarg;
     63 			break;
     64 		case 'p':
     65 			pass = optarg;
     66 			break;
     67 		case 'c':
     68 			cmd = optarg;
     69 			break;
     70 		default:
     71 			usage();
     72 		}
     73 
     74 	if ((sv = getservbyname("exec", "tcp")) == NULL)
     75 		errx(1, "Cannot find service exec/tcp");
     76 
     77 	if ((s = rexec(&host, sv->s_port, user, pass, cmd, NULL)) == -1)
     78 		return 1;
     79 	while ((nr = read(s, line, sizeof(line))) > 0)
     80 		(void)write(STDOUT_FILENO, line, nr);
     81 	if (nr == -1)
     82 		err(1, "read failed");
     83 	return 0;
     84 }
     85 
     86 static void
     87 usage(void)
     88 {
     89 	(void)fprintf(stderr, "Usage: %s [-u <user>] [-p <password>]"
     90 	    "[-h <hostname>] [-c <cmd>]\n", getprogname());
     91 	exit(1);
     92 }
     93