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
main(int argc,char ** argv)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
usage(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