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 * 4. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 #if defined(LIBC_SCCS) && !defined(lint)
31 static char sccsid
[] = "@(#)rexec.c 8.1 (Berkeley) 6/4/93";
32 #endif /* LIBC_SCCS and not lint */
34 #include <sys/types.h>
35 #include <sys/socket.h>
37 #include <netinet/in.h>
47 char ahostbuf
[NI_MAXHOST
];
50 rexec_af(ahost
, rport
, name
, pass
, cmd
, fd2p
, af
)
53 const char *name
, *pass
, *cmd
;
57 struct sockaddr_storage sa2
, from
;
58 struct addrinfo hints
, *res0
;
59 const char *orig_name
= name
;
60 const char *orig_pass
= pass
;
66 char servbuff
[NI_MAXSERV
];
68 snprintf(servbuff
, sizeof(servbuff
), "%d", rport
);
69 servbuff
[sizeof(servbuff
) - 1] = '\0';
71 memset(&hints
, 0, sizeof(hints
));
73 hints
.ai_socktype
= SOCK_STREAM
;
74 hints
.ai_flags
= AI_CANONNAME
;
75 if (gai
= getaddrinfo(*ahost
, servbuff
, &hints
, &res0
)){
80 if (res0
->ai_canonname
){
81 strncpy(ahostbuf
, res0
->ai_canonname
, sizeof(ahostbuf
));
82 ahostbuf
[sizeof(ahostbuf
)-1] = '\0';
88 ruserpass(res0
->ai_canonname
, &name
, &pass
);
90 s
= __socket(res0
->ai_family
, res0
->ai_socktype
, 0);
92 perror("rexec: socket");
95 if (__connect(s
, res0
->ai_addr
, res0
->ai_addrlen
) < 0) {
96 if (errno
== ECONNREFUSED
&& timo
<= 16) {
102 perror(res0
->ai_canonname
);
106 (void) __write(s
, "", 1);
112 s2
= __socket(res0
->ai_family
, res0
->ai_socktype
, 0);
118 sa2len
= sizeof (sa2
);
119 if (getsockname(s2
, (struct sockaddr
*)&sa2
, &sa2len
) < 0 ||
120 sa2len
!= SA_LEN((struct sockaddr
*)&sa2
)) {
121 perror("getsockname");
126 if (!getnameinfo((struct sockaddr
*)&sa2
, sa2len
,
127 NULL
, 0, servbuff
, sizeof(servbuff
),
129 port
= atoi(servbuff
);
130 (void) sprintf(num
, "%u", port
);
131 (void) __write(s
, num
, strlen(num
)+1);
132 { int len
= sizeof (from
);
133 s3
= accept(s2
, (struct sockaddr
*)&from
, &len
);
143 (void) __write(s
, name
, strlen(name
) + 1);
144 /* should public key encypt the password here */
145 (void) __write(s
, pass
, strlen(pass
) + 1);
146 (void) __write(s
, cmd
, strlen(cmd
) + 1);
148 /* We don't need the memory allocated for the name and the password
149 in ruserpass anymore. */
150 if (name
!= orig_name
)
152 if (pass
!= orig_pass
)
155 if (__read(s
, &c
, 1) != 1) {
160 while (__read(s
, &c
, 1) == 1) {
161 (void) __write(2, &c
, 1);
171 (void) __close(*fd2p
);
178 rexec(ahost
, rport
, name
, pass
, cmd
, fd2p
)
181 const char *name
, *pass
, *cmd
;
184 return rexec_af(ahost
, rport
, name
, pass
, cmd
, fd2p
, AF_INET
);