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-rw-r--r--inet/rexec.c146
1 files changed, 146 insertions, 0 deletions
diff --git a/inet/rexec.c b/inet/rexec.c
new file mode 100644
index 0000000000..297e44402d
--- /dev/null
+++ b/inet/rexec.c
@@ -0,0 +1,146 @@
+/*
+ * Copyright (c) 1980, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)rexec.c 8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <sys/socket.h>
+
+#include <netinet/in.h>
+
+#include <stdio.h>
+#include <netdb.h>
+#include <errno.h>
+
+extern errno;
+char *index();
+int rexecoptions;
+char *getpass(), *getlogin();
+
+rexec(ahost, rport, name, pass, cmd, fd2p)
+ char **ahost;
+ int rport;
+ char *name, *pass, *cmd;
+ int *fd2p;
+{
+ struct sockaddr_in sin, sin2, from;
+ struct hostent *hp;
+ u_short port;
+ int s, timo = 1, s3;
+ char c;
+
+ hp = gethostbyname(*ahost);
+ if (hp == 0) {
+ herror(*ahost);
+ return (-1);
+ }
+ *ahost = hp->h_name;
+ ruserpass(hp->h_name, &name, &pass);
+retry:
+ s = socket(AF_INET, SOCK_STREAM, 0);
+ if (s < 0) {
+ perror("rexec: socket");
+ return (-1);
+ }
+ sin.sin_family = hp->h_addrtype;
+ sin.sin_port = rport;
+ bcopy(hp->h_addr, (caddr_t)&sin.sin_addr, hp->h_length);
+ if (connect(s, (struct sockaddr *)&sin, sizeof(sin)) < 0) {
+ if (errno == ECONNREFUSED && timo <= 16) {
+ (void) close(s);
+ sleep(timo);
+ timo *= 2;
+ goto retry;
+ }
+ perror(hp->h_name);
+ return (-1);
+ }
+ if (fd2p == 0) {
+ (void) write(s, "", 1);
+ port = 0;
+ } else {
+ char num[8];
+ int s2, sin2len;
+
+ s2 = socket(AF_INET, SOCK_STREAM, 0);
+ if (s2 < 0) {
+ (void) close(s);
+ return (-1);
+ }
+ listen(s2, 1);
+ sin2len = sizeof (sin2);
+ if (getsockname(s2, (struct sockaddr *)&sin2, &sin2len) < 0 ||
+ sin2len != sizeof (sin2)) {
+ perror("getsockname");
+ (void) close(s2);
+ goto bad;
+ }
+ port = ntohs((u_short)sin2.sin_port);
+ (void) sprintf(num, "%u", port);
+ (void) write(s, num, strlen(num)+1);
+ { int len = sizeof (from);
+ s3 = accept(s2, (struct sockaddr *)&from, &len);
+ close(s2);
+ if (s3 < 0) {
+ perror("accept");
+ port = 0;
+ goto bad;
+ }
+ }
+ *fd2p = s3;
+ }
+ (void) write(s, name, strlen(name) + 1);
+ /* should public key encypt the password here */
+ (void) write(s, pass, strlen(pass) + 1);
+ (void) write(s, cmd, strlen(cmd) + 1);
+ if (read(s, &c, 1) != 1) {
+ perror(*ahost);
+ goto bad;
+ }
+ if (c != 0) {
+ while (read(s, &c, 1) == 1) {
+ (void) write(2, &c, 1);
+ if (c == '\n')
+ break;
+ }
+ goto bad;
+ }
+ return (s);
+bad:
+ if (port)
+ (void) close(*fd2p);
+ (void) close(s);
+ return (-1);
+}