Bring in a hybrid of SunSoft's transport-independent RPC (TI-RPC) and

associated changes that had to happen to make this possible as well as
bugs fixed along the way.

  Bring in required TLI library routines to support this.

  Since we don't support TLI we've essentially copied what NetBSD
  has done, adding a thin layer to emulate direct the TLI calls
  into BSD socket calls.

  This is mostly from Sun's tirpc release that was made in 1994,
  however some fixes were backported from the 1999 release (supposedly
  only made available after this porting effort was underway).

  The submitter has agreed to continue on and bring us up to the
  1999 release.

  Several key features are introduced with this update:
    Client calls are thread safe. (1999 code has server side thread
    safe)
    Updated, a more modern interface.

  Many userland updates were done to bring the code up to par with
  the recent RPC API.

  There is an update to the pthreads library, a function
  pthread_main_np() was added to emulate a function of Sun's threads
  library.

  While we're at it, bring in NetBSD's lockd, it's been far too
  long of a wait.

  New rpcbind(8) replaces portmap(8) (supporting communication over
  an authenticated Unix-domain socket, and by default only allowing
  set and unset requests over that channel). It's much more secure
  than the old portmapper.

  Umount(8), mountd(8), mount_nfs(8), nfsd(8) have also been upgraded
  to support TI-RPC and to support IPV6.

  Umount(8) is also fixed to unmount pathnames longer than 80 chars,
  which are currently truncated by the Kernel statfs structure.

Submitted by: Martin Blapp <mb@imp.ch>
Manpage review: ru
Secure RPC implemented by: wpaul

1 files changed, 453 insertions, 0 deletions

diff --git a/lib/libc/rpc/rpc_soc.c b/lib/libc/rpc/rpc_soc.c
new file mode 100644
index 000000000000..07783d67089c
--- /dev/null
+++ b/lib/libc/rpc/rpc_soc.c
@@ -0,0 +1,453 @@
+/*	$NetBSD: rpc_soc.c,v 1.6 2000/07/06 03:10:35 christos Exp $	*/
+/*	$FreeBSD$ */
+
+/*
+ * 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
+ */
+
+/* #ident	"@(#)rpc_soc.c	1.17	94/04/24 SMI" */
+
+/*
+ * Copyright (c) 1986-1991 by Sun Microsystems Inc.
+ * In addition, portions of such source code were derived from Berkeley
+ * 4.3 BSD under license from the Regents of the University of
+ * California.
+ */
+
+#if 0
+#if !defined(lint) && defined(SCCSIDS)
+static char sccsid[] = "@(#)rpc_soc.c 1.41 89/05/02 Copyr 1988 Sun Micro";
+#endif
+#endif
+
+#ifdef PORTMAP
+/*
+ * rpc_soc.c
+ *
+ * The backward compatibility routines for the earlier implementation
+ * of RPC, where the only transports supported were tcp/ip and udp/ip.
+ * Based on berkeley socket abstraction, now implemented on the top
+ * of TLI/Streams
+ */
+
+#include "reentrant.h"
+#include "namespace.h"
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <stdio.h>
+#include <rpc/rpc.h>
+#include <rpc/pmap_clnt.h>
+#include <rpc/pmap_prot.h>
+#include <rpc/nettype.h>
+#include <syslog.h>
+#include <netinet/in.h>
+#include <netdb.h>
+#include <errno.h>
+#include <syslog.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include "un-namespace.h"
+
+#include "rpc_com.h"
+
+extern mutex_t	rpcsoc_lock;
+
+static CLIENT *clnt_com_create __P((struct sockaddr_in *, rpcprog_t, rpcvers_t,
+				    int *, u_int, u_int, char *));
+static SVCXPRT *svc_com_create __P((int, u_int, u_int, char *));
+static bool_t rpc_wrap_bcast __P((char *, struct netbuf *, struct netconfig *));
+
+/* XXX */
+#define IN4_LOCALHOST_STRING    "127.0.0.1"
+#define IN6_LOCALHOST_STRING    "::1"
+
+/*
+ * A common clnt create routine
+ */
+static CLIENT *
+clnt_com_create(raddr, prog, vers, sockp, sendsz, recvsz, tp)
+	struct sockaddr_in *raddr;
+	rpcprog_t prog;
+	rpcvers_t vers;
+	int *sockp;
+	u_int sendsz;
+	u_int recvsz;
+	char *tp;
+{
+	CLIENT *cl;
+	int madefd = FALSE;
+	int fd = *sockp;
+	struct netconfig *nconf;
+	struct netbuf bindaddr;
+
+	mutex_lock(&rpcsoc_lock);
+	if ((nconf = __rpc_getconfip(tp)) == NULL) {
+		rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
+		mutex_unlock(&rpcsoc_lock);
+		return (NULL);
+	}
+	if (fd == RPC_ANYSOCK) {
+		fd = __rpc_nconf2fd(nconf);
+		if (fd == -1)
+			goto syserror;
+		madefd = TRUE;
+	}
+
+	if (raddr->sin_port == 0) {
+		u_int proto;
+		u_short sport;
+
+		mutex_unlock(&rpcsoc_lock);	/* pmap_getport is recursive */
+		proto = strcmp(tp, "udp") == 0 ? IPPROTO_UDP : IPPROTO_TCP;
+		sport = pmap_getport(raddr, (u_long)prog, (u_long)vers,
+		    proto);
+		if (sport == 0) {
+			goto err;
+		}
+		raddr->sin_port = htons(sport);
+		mutex_lock(&rpcsoc_lock);	/* pmap_getport is recursive */
+	}
+
+	/* Transform sockaddr_in to netbuf */
+	bindaddr.maxlen = bindaddr.len =  sizeof (struct sockaddr_in);
+	bindaddr.buf = raddr;
+
+	bindresvport(fd, NULL);
+	cl = clnt_tli_create(fd, nconf, &bindaddr, prog, vers,
+				sendsz, recvsz);
+	if (cl) {
+		if (madefd == TRUE) {
+			/*
+			 * The fd should be closed while destroying the handle.
+			 */
+			(void) CLNT_CONTROL(cl, CLSET_FD_CLOSE, NULL);
+			*sockp = fd;
+		}
+		(void) freenetconfigent(nconf);
+		mutex_unlock(&rpcsoc_lock);
+		return (cl);
+	}
+	goto err;
+
+syserror:
+	rpc_createerr.cf_stat = RPC_SYSTEMERROR;
+	rpc_createerr.cf_error.re_errno = errno;
+
+err:	if (madefd == TRUE)
+		(void)_close(fd);
+	(void) freenetconfigent(nconf);
+	mutex_unlock(&rpcsoc_lock);
+	return (NULL);
+}
+
+CLIENT *
+clntudp_bufcreate(raddr, prog, vers, wait, sockp, sendsz, recvsz)
+	struct sockaddr_in *raddr;
+	u_long prog;
+	u_long vers;
+	struct timeval wait;
+	int *sockp;
+	u_int sendsz;
+	u_int recvsz;
+{
+	CLIENT *cl;
+
+	cl = clnt_com_create(raddr, (rpcprog_t)prog, (rpcvers_t)vers, sockp,
+	    sendsz, recvsz, "udp");
+	if (cl == NULL) {
+		return (NULL);
+	}
+	(void) CLNT_CONTROL(cl, CLSET_RETRY_TIMEOUT, (char *)(void *)&wait);
+	return (cl);
+}
+
+CLIENT *
+clntudp_create(raddr, program, version, wait, sockp)
+	struct sockaddr_in *raddr;
+	u_long program;
+	u_long version;
+	struct timeval wait;
+	int *sockp;
+{
+
+	return clntudp_bufcreate(raddr, program, version, wait, sockp,
+					UDPMSGSIZE, UDPMSGSIZE);
+}
+
+CLIENT *
+clnttcp_create(raddr, prog, vers, sockp, sendsz, recvsz)
+	struct sockaddr_in *raddr;
+	u_long prog;
+	u_long vers;
+	int *sockp;
+	u_int sendsz;
+	u_int recvsz;
+{
+
+	return clnt_com_create(raddr, (rpcprog_t)prog, (rpcvers_t)vers, sockp,
+	    sendsz, recvsz, "tcp");
+}
+
+CLIENT *
+clntraw_create(prog, vers)
+	u_long prog;
+	u_long vers;
+{
+
+	return clnt_raw_create((rpcprog_t)prog, (rpcvers_t)vers);
+}
+
+/*
+ * A common server create routine
+ */
+static SVCXPRT *
+svc_com_create(fd, sendsize, recvsize, netid)
+	int fd;
+	u_int sendsize;
+	u_int recvsize;
+	char *netid;
+{
+	struct netconfig *nconf;
+	SVCXPRT *svc;
+	int madefd = FALSE;
+	int port;
+	struct sockaddr_in sin;
+
+	if ((nconf = __rpc_getconfip(netid)) == NULL) {
+		(void) syslog(LOG_ERR, "Could not get %s transport", netid);
+		return (NULL);
+	}
+	if (fd == RPC_ANYSOCK) {
+		fd = __rpc_nconf2fd(nconf);
+		if (fd == -1) {
+			(void) freenetconfigent(nconf);
+			(void) syslog(LOG_ERR,
+			"svc%s_create: could not open connection", netid);
+			return (NULL);
+		}
+		madefd = TRUE;
+	}
+
+	memset(&sin, 0, sizeof sin);
+	sin.sin_family = AF_INET;
+	bindresvport(fd, &sin);
+	_listen(fd, SOMAXCONN);
+	svc = svc_tli_create(fd, nconf, NULL, sendsize, recvsize);
+	(void) freenetconfigent(nconf);
+	if (svc == NULL) {
+		if (madefd)
+			(void)_close(fd);
+		return (NULL);
+	}
+	port = (((struct sockaddr_in *)svc->xp_ltaddr.buf)->sin_port);
+	svc->xp_port = ntohs(port);
+	return (svc);
+}
+
+SVCXPRT *
+svctcp_create(fd, sendsize, recvsize)
+	int fd;
+	u_int sendsize;
+	u_int recvsize;
+{
+
+	return svc_com_create(fd, sendsize, recvsize, "tcp");
+}
+
+SVCXPRT *
+svcudp_bufcreate(fd, sendsz, recvsz)
+	int fd;
+	u_int sendsz, recvsz;
+{
+
+	return svc_com_create(fd, sendsz, recvsz, "udp");
+}
+
+SVCXPRT *
+svcfd_create(fd, sendsize, recvsize)
+	int fd;
+	u_int sendsize;
+	u_int recvsize;
+{
+
+	return svc_fd_create(fd, sendsize, recvsize);
+}
+
+
+SVCXPRT *
+svcudp_create(fd)
+	int fd;
+{
+
+	return svc_com_create(fd, UDPMSGSIZE, UDPMSGSIZE, "udp");
+}
+
+SVCXPRT *
+svcraw_create()
+{
+
+	return svc_raw_create();
+}
+
+int
+get_myaddress(addr)
+	struct sockaddr_in *addr;
+{
+
+	memset((void *) addr, 0, sizeof(*addr));
+	addr->sin_family = AF_INET;
+	addr->sin_port = htons(PMAPPORT);
+	addr->sin_addr.s_addr = htonl(INADDR_LOOPBACK);
+	return (0);
+}
+
+/*
+ * For connectionless "udp" transport. Obsoleted by rpc_call().
+ */
+int
+callrpc(host, prognum, versnum, procnum, inproc, in, outproc, out)
+	char *host;
+	int prognum, versnum, procnum;
+	xdrproc_t inproc, outproc;
+	char *in, *out;
+{
+
+	return (int)rpc_call(host, (rpcprog_t)prognum, (rpcvers_t)versnum,
+	    (rpcproc_t)procnum, inproc, in, outproc, out, "udp");
+}
+
+/*
+ * For connectionless kind of transport. Obsoleted by rpc_reg()
+ */
+int
+registerrpc(prognum, versnum, procnum, progname, inproc, outproc)
+	int prognum, versnum, procnum;
+	char *(*progname) __P((char [UDPMSGSIZE]));
+	xdrproc_t inproc, outproc;
+{
+
+	return rpc_reg((rpcprog_t)prognum, (rpcvers_t)versnum,
+	    (rpcproc_t)procnum, progname, inproc, outproc, "udp");
+}
+
+/*
+ * All the following clnt_broadcast stuff is convulated; it supports
+ * the earlier calling style of the callback function
+ */
+static thread_key_t	clnt_broadcast_key;
+static resultproc_t	clnt_broadcast_result_main;
+
+/*
+ * Need to translate the netbuf address into sockaddr_in address.
+ * Dont care about netid here.
+ */
+/* ARGSUSED */
+static bool_t
+rpc_wrap_bcast(resultp, addr, nconf)
+	char *resultp;		/* results of the call */
+	struct netbuf *addr;	/* address of the guy who responded */
+	struct netconfig *nconf; /* Netconf of the transport */
+{
+	resultproc_t clnt_broadcast_result;
+
+	if (strcmp(nconf->nc_netid, "udp"))
+		return (FALSE);
+	if (thr_main())
+		clnt_broadcast_result = clnt_broadcast_result_main;
+	else
+		clnt_broadcast_result = (resultproc_t)thr_getspecific(clnt_broadcast_key);
+	return (*clnt_broadcast_result)(resultp,
+				(struct sockaddr_in *)addr->buf);
+}
+
+/*
+ * Broadcasts on UDP transport. Obsoleted by rpc_broadcast().
+ */
+enum clnt_stat
+clnt_broadcast(prog, vers, proc, xargs, argsp, xresults, resultsp, eachresult)
+	u_long		prog;		/* program number */
+	u_long		vers;		/* version number */
+	u_long		proc;		/* procedure number */
+	xdrproc_t	xargs;		/* xdr routine for args */
+	caddr_t		argsp;		/* pointer to args */
+	xdrproc_t	xresults;	/* xdr routine for results */
+	caddr_t		resultsp;	/* pointer to results */
+	resultproc_t	eachresult;	/* call with each result obtained */
+{
+	extern mutex_t tsd_lock;
+
+	if (thr_main())
+		clnt_broadcast_result_main = eachresult;
+	else {
+		if (clnt_broadcast_key == 0) {
+			mutex_lock(&tsd_lock);
+			if (clnt_broadcast_key == 0)
+				thr_keycreate(&clnt_broadcast_key, free);
+			mutex_unlock(&tsd_lock);
+		}
+		thr_setspecific(clnt_broadcast_key, (void *) eachresult);
+	}
+	return rpc_broadcast((rpcprog_t)prog, (rpcvers_t)vers,
+	    (rpcproc_t)proc, xargs, argsp, xresults, resultsp,
+	    (resultproc_t) rpc_wrap_bcast, "udp");
+}
+
+/*
+ * Create the client des authentication object. Obsoleted by
+ * authdes_seccreate().
+ */
+AUTH *
+authdes_create(servername, window, syncaddr, ckey)
+	char *servername;		/* network name of server */
+	u_int window;			/* time to live */
+	struct sockaddr *syncaddr;	/* optional hostaddr to sync with */
+	des_block *ckey;		/* optional conversation key to use */
+{
+	AUTH *dummy;
+	AUTH *nauth;
+	char hostname[NI_MAXHOST];
+
+	if (syncaddr) {
+		/*
+		 * Change addr to hostname, because that is the way
+		 * new interface takes it.
+		 */
+		if (getnameinfo(syncaddr, syncaddr->sa_len, hostname,
+		    sizeof hostname, NULL, 0, 0) != 0)
+			goto fallback;
+
+		nauth = authdes_seccreate(servername, window, hostname, ckey);
+		return (nauth);
+	}
+fallback:
+	dummy = authdes_seccreate(servername, window, NULL, ckey);
+	return (dummy);
+}
+
+#endif /* PORTMAP */