BSD 4.4 Lite usr.sbin Sources

3 files changed, 659 insertions, 0 deletions

diff --git a/usr.sbin/portmap/Makefile b/usr.sbin/portmap/Makefile
new file mode 100644
index 0000000..244a192
--- /dev/null
+++ b/usr.sbin/portmap/Makefile
@@ -0,0 +1,8 @@
+#	@(#)Makefile	8.1 (Berkeley) 6/6/93
+
+PROG=	portmap
+DPADD=	${LIBRPC}
+LDADD=	-lrpc
+MAN8=	portmap.0
+
+.include <bsd.prog.mk>
diff --git a/usr.sbin/portmap/portmap.8 b/usr.sbin/portmap/portmap.8
new file mode 100644
index 0000000..a651f5f
--- /dev/null
+++ b/usr.sbin/portmap/portmap.8
@@ -0,0 +1,110 @@
+.\" Copyright (c) 1987 Sun Microsystems
+.\" Copyright (c) 1990, 1991, 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.
+.\"
+.\"     @(#)portmap.8	8.1 (Berkeley) 6/6/93
+.\"
+.Dd June 6, 1993
+.Dt PORTMAP 8
+.Os BSD 4.3
+.Sh NAME
+.Nm portmap
+.Nd
+.Tn DARPA
+port to
+.Tn RPC
+program number mapper
+.Sh SYNOPSIS
+.Nm portmap
+.Op Fl d
+.Sh DESCRIPTION
+.Nm Portmap
+is a server that converts
+.Tn RPC
+program numbers into
+.Tn DARPA
+protocol port numbers.
+It must be running in order to make
+.Tn RPC
+calls.
+.Pp
+When an
+.Tn RPC
+server is started, it will tell
+.Nm portmap
+what port number it is listening to, and what
+.Tn RPC
+program numbers it is prepared to serve.
+When a client wishes to make an
+.Tn RPC
+call to a given program number,
+it will first contact
+.Nm portmap
+on the server machine to determine
+the port number where
+.Tn RPC
+packets should be sent.
+.Pp
+.Nm Portmap
+must be started before any
+.Tn RPC
+servers are invoked.
+.Pp
+Normally
+.Nm portmap
+forks and dissociates itself from the terminal
+like any other daemon.
+.Nm Portmap
+then logs errors using
+.Xr syslog 3 .
+.Pp
+Option available:
+.Bl -tag -width Ds
+.It Fl d
+(debug) prevents
+.Nm portmap
+from running as a daemon,
+and causes errors and debugging information
+to be printed to the standard error output.
+.El
+.Sh SEE ALSO
+.Xr inetd.conf 5 ,
+.Xr rpcinfo 8 ,
+.Xr inetd 8
+.Sh BUGS
+If
+.Nm portmap
+crashes, all servers must be restarted.
+.Sh HISTORY
+The
+.Nm
+command appeared in
+.Bx 4.3
diff --git a/usr.sbin/portmap/portmap.c b/usr.sbin/portmap/portmap.c
new file mode 100644
index 0000000..3118a28
--- /dev/null
+++ b/usr.sbin/portmap/portmap.c
@@ -0,0 +1,541 @@
+/*-
+ * Copyright (c) 1990, 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.
+ */
+
+#ifndef lint
+static char copyright[] =
+"@(#) Copyright (c) 1990, 1993\n\
+	The Regents of the University of California.  All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)portmap.c	8.1 (Berkeley) 6/6/93";
+#endif /* not lint */
+
+/*
+@(#)portmap.c	2.3 88/08/11 4.0 RPCSRC
+static char sccsid[] = "@(#)portmap.c 1.32 87/08/06 Copyr 1984 Sun Micro";
+*/
+
+/*
+ * portmap.c, Implements the program,version to port number mapping for
+ * rpc.
+ */
+
+/*
+ * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
+ * unrestricted use provided that this legend is included on all tape
+ * media and as a part of the software program in whole or part.  Users
+ * may copy or modify Sun RPC without charge, but are not authorized
+ * to license or distribute it to anyone else except as part of a product or
+ * program developed by the user.
+ * 
+ * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
+ * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
+ * 
+ * Sun RPC is provided with no support and without any obligation on the
+ * part of Sun Microsystems, Inc. to assist in its use, correction,
+ * modification or enhancement.
+ * 
+ * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
+ * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
+ * OR ANY PART THEREOF.
+ * 
+ * In no event will Sun Microsystems, Inc. be liable for any lost revenue
+ * or profits or other special, indirect and consequential damages, even if
+ * Sun has been advised of the possibility of such damages.
+ * 
+ * Sun Microsystems, Inc.
+ * 2550 Garcia Avenue
+ * Mountain View, California  94043
+ */
+
+#include <rpc/rpc.h>
+#include <rpc/pmap_prot.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <syslog.h>
+#include <unistd.h>
+#include <netdb.h>
+#include <sys/socket.h>
+#include <sys/ioctl.h>
+#include <sys/wait.h>
+#include <sys/signal.h>
+#include <sys/resource.h>
+
+void reg_service();
+void reap();
+static void callit();
+struct pmaplist *pmaplist;
+int debugging = 0;
+extern int errno;
+
+main(argc, argv)
+	int argc;
+	char **argv;
+{
+	SVCXPRT *xprt;
+	int sock, c;
+	struct sockaddr_in addr;
+	int len = sizeof(struct sockaddr_in);
+	register struct pmaplist *pml;
+
+	while ((c = getopt(argc, argv, "d")) != EOF) {
+		switch (c) {
+
+		case 'd':
+			debugging = 1;
+			break;
+
+		default:
+			(void) fprintf(stderr, "usage: %s [-d]\n", argv[0]);
+			exit(1);
+		}
+	}
+
+	if (!debugging && daemon(0, 0)) {
+		(void) fprintf(stderr, "portmap: fork: %s", strerror(errno));
+		exit(1);
+	}
+
+	openlog("portmap", debugging ? LOG_PID | LOG_PERROR : LOG_PID,
+	    LOG_DAEMON);
+
+	if ((sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0) {
+		syslog(LOG_ERR, "cannot create udp socket: %m");
+		exit(1);
+	}
+
+	addr.sin_addr.s_addr = 0;
+	addr.sin_family = AF_INET;
+	addr.sin_port = htons(PMAPPORT);
+	if (bind(sock, (struct sockaddr *)&addr, len) != 0) {
+		syslog(LOG_ERR, "cannot bind udp: %m");
+		exit(1);
+	}
+
+	if ((xprt = svcudp_create(sock)) == (SVCXPRT *)NULL) {
+		syslog(LOG_ERR, "couldn't do udp_create");
+		exit(1);
+	}
+	/* make an entry for ourself */
+	pml = (struct pmaplist *)malloc((u_int)sizeof(struct pmaplist));
+	pml->pml_next = 0;
+	pml->pml_map.pm_prog = PMAPPROG;
+	pml->pml_map.pm_vers = PMAPVERS;
+	pml->pml_map.pm_prot = IPPROTO_UDP;
+	pml->pml_map.pm_port = PMAPPORT;
+	pmaplist = pml;
+
+	if ((sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)) < 0) {
+		syslog(LOG_ERR, "cannot create tcp socket: %m");
+		exit(1);
+	}
+	if (bind(sock, (struct sockaddr *)&addr, len) != 0) {
+		syslog(LOG_ERR, "cannot bind udp: %m");
+		exit(1);
+	}
+	if ((xprt = svctcp_create(sock, RPCSMALLMSGSIZE, RPCSMALLMSGSIZE))
+	    == (SVCXPRT *)NULL) {
+		syslog(LOG_ERR, "couldn't do tcp_create");
+		exit(1);
+	}
+	/* make an entry for ourself */
+	pml = (struct pmaplist *)malloc((u_int)sizeof(struct pmaplist));
+	pml->pml_map.pm_prog = PMAPPROG;
+	pml->pml_map.pm_vers = PMAPVERS;
+	pml->pml_map.pm_prot = IPPROTO_TCP;
+	pml->pml_map.pm_port = PMAPPORT;
+	pml->pml_next = pmaplist;
+	pmaplist = pml;
+
+	(void)svc_register(xprt, PMAPPROG, PMAPVERS, reg_service, FALSE);
+
+	(void)signal(SIGCHLD, reap);
+	svc_run();
+	syslog(LOG_ERR, "run_svc returned unexpectedly");
+	abort();
+}
+
+#ifndef lint
+/* need to override perror calls in rpc library */
+void
+perror(what)
+	const char *what;
+{
+
+	syslog(LOG_ERR, "%s: %m", what);
+}
+#endif
+
+static struct pmaplist *
+find_service(prog, vers, prot)
+	u_long prog, vers, prot;
+{
+	register struct pmaplist *hit = NULL;
+	register struct pmaplist *pml;
+
+	for (pml = pmaplist; pml != NULL; pml = pml->pml_next) {
+		if ((pml->pml_map.pm_prog != prog) ||
+			(pml->pml_map.pm_prot != prot))
+			continue;
+		hit = pml;
+		if (pml->pml_map.pm_vers == vers)
+		    break;
+	}
+	return (hit);
+}
+
+/* 
+ * 1 OK, 0 not
+ */
+void
+reg_service(rqstp, xprt)
+	struct svc_req *rqstp;
+	SVCXPRT *xprt;
+{
+	struct pmap reg;
+	struct pmaplist *pml, *prevpml, *fnd;
+	int ans, port;
+	caddr_t t;
+	
+	if (debugging)
+		(void) fprintf(stderr, "server: about do a switch\n");
+	switch (rqstp->rq_proc) {
+
+	case PMAPPROC_NULL:
+		/*
+		 * Null proc call
+		 */
+		if (!svc_sendreply(xprt, xdr_void, (caddr_t)0) && debugging) {
+			abort();
+		}
+		break;
+
+	case PMAPPROC_SET:
+		/*
+		 * Set a program,version to port mapping
+		 */
+		if (!svc_getargs(xprt, xdr_pmap, &reg))
+			svcerr_decode(xprt);
+		else {
+			/*
+			 * check to see if already used
+			 * find_service returns a hit even if
+			 * the versions don't match, so check for it
+			 */
+			fnd = find_service(reg.pm_prog, reg.pm_vers, reg.pm_prot);
+			if (fnd && fnd->pml_map.pm_vers == reg.pm_vers) {
+				if (fnd->pml_map.pm_port == reg.pm_port) {
+					ans = 1;
+					goto done;
+				}
+				else {
+					ans = 0;
+					goto done;
+				}
+			} else {
+				/* 
+				 * add to END of list
+				 */
+				pml = (struct pmaplist *)
+				    malloc((u_int)sizeof(struct pmaplist));
+				pml->pml_map = reg;
+				pml->pml_next = 0;
+				if (pmaplist == 0) {
+					pmaplist = pml;
+				} else {
+					for (fnd= pmaplist; fnd->pml_next != 0;
+					    fnd = fnd->pml_next);
+					fnd->pml_next = pml;
+				}
+				ans = 1;
+			}
+		done:
+			if ((!svc_sendreply(xprt, xdr_long, (caddr_t)&ans)) &&
+			    debugging) {
+				(void) fprintf(stderr, "svc_sendreply\n");
+				abort();
+			}
+		}
+		break;
+
+	case PMAPPROC_UNSET:
+		/*
+		 * Remove a program,version to port mapping.
+		 */
+		if (!svc_getargs(xprt, xdr_pmap, &reg))
+			svcerr_decode(xprt);
+		else {
+			ans = 0;
+			for (prevpml = NULL, pml = pmaplist; pml != NULL; ) {
+				if ((pml->pml_map.pm_prog != reg.pm_prog) ||
+					(pml->pml_map.pm_vers != reg.pm_vers)) {
+					/* both pml & prevpml move forwards */
+					prevpml = pml;
+					pml = pml->pml_next;
+					continue;
+				}
+				/* found it; pml moves forward, prevpml stays */
+				ans = 1;
+				t = (caddr_t)pml;
+				pml = pml->pml_next;
+				if (prevpml == NULL)
+					pmaplist = pml;
+				else
+					prevpml->pml_next = pml;
+				free(t);
+			}
+			if ((!svc_sendreply(xprt, xdr_long, (caddr_t)&ans)) &&
+			    debugging) {
+				(void) fprintf(stderr, "svc_sendreply\n");
+				abort();
+			}
+		}
+		break;
+
+	case PMAPPROC_GETPORT:
+		/*
+		 * Lookup the mapping for a program,version and return its port
+		 */
+		if (!svc_getargs(xprt, xdr_pmap, &reg))
+			svcerr_decode(xprt);
+		else {
+			fnd = find_service(reg.pm_prog, reg.pm_vers, reg.pm_prot);
+			if (fnd)
+				port = fnd->pml_map.pm_port;
+			else
+				port = 0;
+			if ((!svc_sendreply(xprt, xdr_long, (caddr_t)&port)) &&
+			    debugging) {
+				(void) fprintf(stderr, "svc_sendreply\n");
+				abort();
+			}
+		}
+		break;
+
+	case PMAPPROC_DUMP:
+		/*
+		 * Return the current set of mapped program,version
+		 */
+		if (!svc_getargs(xprt, xdr_void, NULL))
+			svcerr_decode(xprt);
+		else {
+			if ((!svc_sendreply(xprt, xdr_pmaplist,
+			    (caddr_t)&pmaplist)) && debugging) {
+				(void) fprintf(stderr, "svc_sendreply\n");
+				abort();
+			}
+		}
+		break;
+
+	case PMAPPROC_CALLIT:
+		/*
+		 * Calls a procedure on the local machine.  If the requested
+		 * procedure is not registered this procedure does not return
+		 * error information!!
+		 * This procedure is only supported on rpc/udp and calls via 
+		 * rpc/udp.  It passes null authentication parameters.
+		 */
+		callit(rqstp, xprt);
+		break;
+
+	default:
+		svcerr_noproc(xprt);
+		break;
+	}
+}
+
+
+/*
+ * Stuff for the rmtcall service
+ */
+#define ARGSIZE 9000
+
+struct encap_parms {
+	u_long arglen;
+	char *args;
+};
+
+static bool_t
+xdr_encap_parms(xdrs, epp)
+	XDR *xdrs;
+	struct encap_parms *epp;
+{
+
+	return (xdr_bytes(xdrs, &(epp->args), &(epp->arglen), ARGSIZE));
+}
+
+struct rmtcallargs {
+	u_long	rmt_prog;
+	u_long	rmt_vers;
+	u_long	rmt_port;
+	u_long	rmt_proc;
+	struct encap_parms rmt_args;
+};
+
+static bool_t
+xdr_rmtcall_args(xdrs, cap)
+	register XDR *xdrs;
+	register struct rmtcallargs *cap;
+{
+
+	/* does not get a port number */
+	if (xdr_u_long(xdrs, &(cap->rmt_prog)) &&
+	    xdr_u_long(xdrs, &(cap->rmt_vers)) &&
+	    xdr_u_long(xdrs, &(cap->rmt_proc))) {
+		return (xdr_encap_parms(xdrs, &(cap->rmt_args)));
+	}
+	return (FALSE);
+}
+
+static bool_t
+xdr_rmtcall_result(xdrs, cap)
+	register XDR *xdrs;
+	register struct rmtcallargs *cap;
+{
+	if (xdr_u_long(xdrs, &(cap->rmt_port)))
+		return (xdr_encap_parms(xdrs, &(cap->rmt_args)));
+	return (FALSE);
+}
+
+/*
+ * only worries about the struct encap_parms part of struct rmtcallargs.
+ * The arglen must already be set!!
+ */
+static bool_t
+xdr_opaque_parms(xdrs, cap)
+	XDR *xdrs;
+	struct rmtcallargs *cap;
+{
+
+	return (xdr_opaque(xdrs, cap->rmt_args.args, cap->rmt_args.arglen));
+}
+
+/*
+ * This routine finds and sets the length of incoming opaque paraters
+ * and then calls xdr_opaque_parms.
+ */
+static bool_t
+xdr_len_opaque_parms(xdrs, cap)
+	register XDR *xdrs;
+	struct rmtcallargs *cap;
+{
+	register u_int beginpos, lowpos, highpos, currpos, pos;
+
+	beginpos = lowpos = pos = xdr_getpos(xdrs);
+	highpos = lowpos + ARGSIZE;
+	while ((int)(highpos - lowpos) >= 0) {
+		currpos = (lowpos + highpos) / 2;
+		if (xdr_setpos(xdrs, currpos)) {
+			pos = currpos;
+			lowpos = currpos + 1;
+		} else {
+			highpos = currpos - 1;
+		}
+	}
+	xdr_setpos(xdrs, beginpos);
+	cap->rmt_args.arglen = pos - beginpos;
+	return (xdr_opaque_parms(xdrs, cap));
+}
+
+/*
+ * Call a remote procedure service
+ * This procedure is very quiet when things go wrong.
+ * The proc is written to support broadcast rpc.  In the broadcast case,
+ * a machine should shut-up instead of complain, less the requestor be
+ * overrun with complaints at the expense of not hearing a valid reply ...
+ *
+ * This now forks so that the program & process that it calls can call 
+ * back to the portmapper.
+ */
+static void
+callit(rqstp, xprt)
+	struct svc_req *rqstp;
+	SVCXPRT *xprt;
+{
+	struct rmtcallargs a;
+	struct pmaplist *pml;
+	u_short port;
+	struct sockaddr_in me;
+	int pid, so = -1;
+	CLIENT *client;
+	struct authunix_parms *au = (struct authunix_parms *)rqstp->rq_clntcred;
+	struct timeval timeout;
+	char buf[ARGSIZE];
+
+	timeout.tv_sec = 5;
+	timeout.tv_usec = 0;
+	a.rmt_args.args = buf;
+	if (!svc_getargs(xprt, xdr_rmtcall_args, &a))
+		return;
+	if ((pml = find_service(a.rmt_prog, a.rmt_vers,
+	    (u_long)IPPROTO_UDP)) == NULL)
+		return;
+	/*
+	 * fork a child to do the work.  Parent immediately returns.
+	 * Child exits upon completion.
+	 */
+	if ((pid = fork()) != 0) {
+		if (pid < 0)
+			syslog(LOG_ERR, "CALLIT (prog %lu): fork: %m",
+			    a.rmt_prog);
+		return;
+	}
+	port = pml->pml_map.pm_port;
+	get_myaddress(&me);
+	me.sin_port = htons(port);
+	client = clntudp_create(&me, a.rmt_prog, a.rmt_vers, timeout, &so);
+	if (client != (CLIENT *)NULL) {
+		if (rqstp->rq_cred.oa_flavor == AUTH_UNIX) {
+			client->cl_auth = authunix_create(au->aup_machname,
+			   au->aup_uid, au->aup_gid, au->aup_len, au->aup_gids);
+		}
+		a.rmt_port = (u_long)port;
+		if (clnt_call(client, a.rmt_proc, xdr_opaque_parms, &a,
+		    xdr_len_opaque_parms, &a, timeout) == RPC_SUCCESS) {
+			svc_sendreply(xprt, xdr_rmtcall_result, (caddr_t)&a);
+		}
+		AUTH_DESTROY(client->cl_auth);
+		clnt_destroy(client);
+	}
+	(void)close(so);
+	exit(0);
+}
+
+void
+reap()
+{
+	while (wait3((int *)NULL, WNOHANG, (struct rusage *)NULL) > 0);
+}