2 * Copyright (c) 1980, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 #if defined(LIBC_SCCS) && !defined(lint)
35 static char sccsid
[] = "@(#)rexec.c 8.1 (Berkeley) 6/4/93";
36 #endif /* LIBC_SCCS and not lint */
38 #include <sys/types.h>
39 #include <sys/socket.h>
41 #include <netinet/in.h>
53 rexec(ahost
, rport
, name
, pass
, cmd
, fd2p
)
56 char *name
, *pass
, *cmd
;
59 struct sockaddr_in sin
, sin2
, from
;
60 struct hostent hostbuf
, *hp
;
69 hsttmpbuf
= __alloca (hstbuflen
);
70 while (__gethostbyname_r (*ahost
, &hostbuf
, hsttmpbuf
, hstbuflen
,
72 if (herr
!= NETDB_INTERNAL
|| errno
!= ERANGE
)
80 /* Enlarge the buffer. */
82 hsttmpbuf
= __alloca (hstbuflen
);
86 ruserpass(hp
->h_name
, &name
, &pass
);
88 s
= socket(AF_INET
, SOCK_STREAM
, 0);
90 perror("rexec: socket");
93 sin
.sin_family
= hp
->h_addrtype
;
95 bcopy(hp
->h_addr
, (caddr_t
)&sin
.sin_addr
, hp
->h_length
);
96 if (connect(s
, (struct sockaddr
*)&sin
, sizeof(sin
)) < 0) {
97 if (errno
== ECONNREFUSED
&& timo
<= 16) {
107 (void) write(s
, "", 1);
113 s2
= socket(AF_INET
, SOCK_STREAM
, 0);
119 sin2len
= sizeof (sin2
);
120 if (getsockname(s2
, (struct sockaddr
*)&sin2
, &sin2len
) < 0 ||
121 sin2len
!= sizeof (sin2
)) {
122 perror("getsockname");
126 port
= ntohs((u_short
)sin2
.sin_port
);
127 (void) sprintf(num
, "%u", port
);
128 (void) write(s
, num
, strlen(num
)+1);
129 { int len
= sizeof (from
);
130 s3
= accept(s2
, (struct sockaddr
*)&from
, &len
);
140 (void) write(s
, name
, strlen(name
) + 1);
141 /* should public key encypt the password here */
142 (void) write(s
, pass
, strlen(pass
) + 1);
143 (void) write(s
, cmd
, strlen(cmd
) + 1);
144 if (read(s
, &c
, 1) != 1) {
149 while (read(s
, &c
, 1) == 1) {
150 (void) write(2, &c
, 1);