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, 0 insertions, 482 deletions

diff --git a/lib/libc/rpc/svc_udp.c b/lib/libc/rpc/svc_udp.c
deleted file mode 100644
index 0abd486..0000000
--- a/lib/libc/rpc/svc_udp.c
+++ /dev/null
@@ -1,482 +0,0 @@
-/*
- * 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
- */
-
-#if defined(LIBC_SCCS) && !defined(lint)
-/*static char *sccsid = "from: @(#)svc_udp.c 1.24 87/08/11 Copyr 1984 Sun Micro";*/
-/*static char *sccsid = "from: @(#)svc_udp.c	2.2 88/07/29 4.0 RPCSRC";*/
-static char *rcsid = "$FreeBSD$";
-#endif
-
-/*
- * svc_udp.c,
- * Server side for UDP/IP based RPC.  (Does some caching in the hopes of
- * achieving execute-at-most-once semantics.)
- *
- * Copyright (C) 1984, Sun Microsystems, Inc.
- */
-
-#include "namespace.h"
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <string.h>
-#include <rpc/rpc.h>
-#include <sys/socket.h>
-#include <errno.h>
-#include "un-namespace.h"
-
-#define rpc_buffer(xprt) ((xprt)->xp_p1)
-#define MAX(a, b)     ((a > b) ? a : b)
-
-static bool_t		svcudp_recv();
-static bool_t		svcudp_reply();
-static enum xprt_stat	svcudp_stat();
-static bool_t		svcudp_getargs();
-static bool_t		svcudp_freeargs();
-static void		svcudp_destroy();
-static void		cache_set __P((SVCXPRT *, u_long));
-static int		cache_get __P((SVCXPRT *, struct rpc_msg *, char **, u_long *));
-
-static struct xp_ops svcudp_op = {
-	svcudp_recv,
-	svcudp_stat,
-	svcudp_getargs,
-	svcudp_reply,
-	svcudp_freeargs,
-	svcudp_destroy
-};
-
-/*
- * kept in xprt->xp_p2
- */
-struct svcudp_data {
-	u_int   su_iosz;	/* byte size of send.recv buffer */
-	u_long	su_xid;		/* transaction id */
-	XDR	su_xdrs;	/* XDR handle */
-	char	su_verfbody[MAX_AUTH_BYTES];	/* verifier body */
-	char * 	su_cache;	/* cached data, NULL if no cache */
-};
-#define	su_data(xprt)	((struct svcudp_data *)(xprt->xp_p2))
-
-/*
- * Usage:
- *	xprt = svcudp_create(sock);
- *
- * If sock<0 then a socket is created, else sock is used.
- * If the socket, sock is not bound to a port then svcudp_create
- * binds it to an arbitrary port.  In any (successful) case,
- * xprt->xp_sock is the registered socket number and xprt->xp_port is the
- * associated port number.
- * Once *xprt is initialized, it is registered as a transporter;
- * see (svc.h, xprt_register).
- * The routines returns NULL if a problem occurred.
- */
-SVCXPRT *
-svcudp_bufcreate(sock, sendsz, recvsz)
-	register int sock;
-	u_int sendsz, recvsz;
-{
-	bool_t madesock = FALSE;
-	register SVCXPRT *xprt;
-	register struct svcudp_data *su;
-	struct sockaddr_in addr;
-	int len = sizeof(struct sockaddr_in);
-
-	if (sock == RPC_ANYSOCK) {
-		if ((sock = _socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0) {
-			perror("svcudp_create: socket creation problem");
-			return ((SVCXPRT *)NULL);
-		}
-		madesock = TRUE;
-	}
-	memset((char *)&addr, 0, sizeof (addr));
-	addr.sin_len = sizeof(struct sockaddr_in);
-	addr.sin_family = AF_INET;
-	if (bindresvport(sock, &addr)) {
-		addr.sin_port = 0;
-		(void)_bind(sock, (struct sockaddr *)&addr, len);
-	}
-	if (_getsockname(sock, (struct sockaddr *)&addr, &len) != 0) {
-		perror("svcudp_create - cannot getsockname");
-		if (madesock)
-			(void)_close(sock);
-		return ((SVCXPRT *)NULL);
-	}
-	xprt = (SVCXPRT *)mem_alloc(sizeof(SVCXPRT));
-	if (xprt == NULL) {
-		(void)fprintf(stderr, "svcudp_create: out of memory\n");
-		return (NULL);
-	}
-	su = (struct svcudp_data *)mem_alloc(sizeof(*su));
-	if (su == NULL) {
-		(void)fprintf(stderr, "svcudp_create: out of memory\n");
-		return (NULL);
-	}
-	su->su_iosz = ((MAX(sendsz, recvsz) + 3) / 4) * 4;
-	if ((rpc_buffer(xprt) = mem_alloc(su->su_iosz)) == NULL) {
-		(void)fprintf(stderr, "svcudp_create: out of memory\n");
-		return (NULL);
-	}
-	xdrmem_create(
-	    &(su->su_xdrs), rpc_buffer(xprt), su->su_iosz, XDR_DECODE);
-	su->su_cache = NULL;
-	xprt->xp_p2 = (caddr_t)su;
-	xprt->xp_verf.oa_base = su->su_verfbody;
-	xprt->xp_ops = &svcudp_op;
-	xprt->xp_port = ntohs(addr.sin_port);
-	xprt->xp_sock = sock;
-	xprt_register(xprt);
-	return (xprt);
-}
-
-SVCXPRT *
-svcudp_create(sock)
-	int sock;
-{
-
-	return(svcudp_bufcreate(sock, UDPMSGSIZE, UDPMSGSIZE));
-}
-
-static enum xprt_stat
-svcudp_stat(xprt)
-	SVCXPRT *xprt;
-{
-
-	return (XPRT_IDLE);
-}
-
-static bool_t
-svcudp_recv(xprt, msg)
-	register SVCXPRT *xprt;
-	struct rpc_msg *msg;
-{
-	register struct svcudp_data *su = su_data(xprt);
-	register XDR *xdrs = &(su->su_xdrs);
-	register int rlen;
-	char *reply;
-	u_long replylen;
-
-    again:
-	xprt->xp_addrlen = sizeof(struct sockaddr_in);
-	rlen = _recvfrom(xprt->xp_sock, rpc_buffer(xprt), (int) su->su_iosz,
-	    0, (struct sockaddr *)&(xprt->xp_raddr), &(xprt->xp_addrlen));
-	if (rlen == -1 && errno == EINTR)
-		goto again;
-	if (rlen == -1 || rlen < 4*sizeof(u_int32_t))
-		return (FALSE);
-	xdrs->x_op = XDR_DECODE;
-	XDR_SETPOS(xdrs, 0);
-	if (! xdr_callmsg(xdrs, msg))
-		return (FALSE);
-	su->su_xid = msg->rm_xid;
-	if (su->su_cache != NULL) {
-		if (cache_get(xprt, msg, &reply, &replylen)) {
-			(void) _sendto(xprt->xp_sock, reply, (int) replylen, 0,
-			  (struct sockaddr *) &xprt->xp_raddr, xprt->xp_addrlen);
-			return (TRUE);
-		}
-	}
-	return (TRUE);
-}
-
-static bool_t
-svcudp_reply(xprt, msg)
-	register SVCXPRT *xprt;
-	struct rpc_msg *msg;
-{
-	register struct svcudp_data *su = su_data(xprt);
-	register XDR *xdrs = &(su->su_xdrs);
-	register int slen;
-	register bool_t stat = FALSE;
-
-	xdrs->x_op = XDR_ENCODE;
-	XDR_SETPOS(xdrs, 0);
-	msg->rm_xid = su->su_xid;
-	if (xdr_replymsg(xdrs, msg)) {
-		slen = (int)XDR_GETPOS(xdrs);
-		if (_sendto(xprt->xp_sock, rpc_buffer(xprt), slen, 0,
-		    (struct sockaddr *)&(xprt->xp_raddr), xprt->xp_addrlen)
-		    == slen) {
-			stat = TRUE;
-			if (su->su_cache && slen >= 0) {
-				cache_set(xprt, (u_long) slen);
-			}
-		}
-	}
-	return (stat);
-}
-
-static bool_t
-svcudp_getargs(xprt, xdr_args, args_ptr)
-	SVCXPRT *xprt;
-	xdrproc_t xdr_args;
-	caddr_t args_ptr;
-{
-
-	return ((*xdr_args)(&(su_data(xprt)->su_xdrs), args_ptr));
-}
-
-static bool_t
-svcudp_freeargs(xprt, xdr_args, args_ptr)
-	SVCXPRT *xprt;
-	xdrproc_t xdr_args;
-	caddr_t args_ptr;
-{
-	register XDR *xdrs = &(su_data(xprt)->su_xdrs);
-
-	xdrs->x_op = XDR_FREE;
-	return ((*xdr_args)(xdrs, args_ptr));
-}
-
-static void
-svcudp_destroy(xprt)
-	register SVCXPRT *xprt;
-{
-	register struct svcudp_data *su = su_data(xprt);
-
-	xprt_unregister(xprt);
-	(void)_close(xprt->xp_sock);
-	XDR_DESTROY(&(su->su_xdrs));
-	mem_free(rpc_buffer(xprt), su->su_iosz);
-	mem_free((caddr_t)su, sizeof(struct svcudp_data));
-	mem_free((caddr_t)xprt, sizeof(SVCXPRT));
-}
-
-
-/***********this could be a separate file*********************/
-
-/*
- * Fifo cache for udp server
- * Copies pointers to reply buffers into fifo cache
- * Buffers are sent again if retransmissions are detected.
- */
-
-#define SPARSENESS 4	/* 75% sparse */
-
-#define CACHE_PERROR(msg)	\
-	(void) fprintf(stderr,"%s\n", msg)
-
-#define ALLOC(type, size)	\
-	(type *) mem_alloc((unsigned) (sizeof(type) * (size)))
-
-#define BZERO(addr, type, size)	 \
-	memset((char *) addr, 0, sizeof(type) * (int) (size))
-
-/*
- * An entry in the cache
- */
-typedef struct cache_node *cache_ptr;
-struct cache_node {
-	/*
-	 * Index into cache is xid, proc, vers, prog and address
-	 */
-	u_long cache_xid;
-	u_long cache_proc;
-	u_long cache_vers;
-	u_long cache_prog;
-	struct sockaddr_in cache_addr;
-	/*
-	 * The cached reply and length
-	 */
-	char * cache_reply;
-	u_long cache_replylen;
-	/*
- 	 * Next node on the list, if there is a collision
-	 */
-	cache_ptr cache_next;
-};
-
-
-
-/*
- * The entire cache
- */
-struct udp_cache {
-	u_long uc_size;		/* size of cache */
-	cache_ptr *uc_entries;	/* hash table of entries in cache */
-	cache_ptr *uc_fifo;	/* fifo list of entries in cache */
-	u_long uc_nextvictim;	/* points to next victim in fifo list */
-	u_long uc_prog;		/* saved program number */
-	u_long uc_vers;		/* saved version number */
-	u_long uc_proc;		/* saved procedure number */
-	struct sockaddr_in uc_addr; /* saved caller's address */
-};
-
-
-/*
- * the hashing function
- */
-#define CACHE_LOC(transp, xid)	\
- (xid % (SPARSENESS*((struct udp_cache *) su_data(transp)->su_cache)->uc_size))
-
-
-/*
- * Enable use of the cache.
- * Note: there is no disable.
- */
-int svcudp_enablecache(transp, size)
-	SVCXPRT *transp;
-	u_long size;
-{
-	struct svcudp_data *su = su_data(transp);
-	struct udp_cache *uc;
-
-	if (su->su_cache != NULL) {
-		CACHE_PERROR("enablecache: cache already enabled");
-		return(0);
-	}
-	uc = ALLOC(struct udp_cache, 1);
-	if (uc == NULL) {
-		CACHE_PERROR("enablecache: could not allocate cache");
-		return(0);
-	}
-	uc->uc_size = size;
-	uc->uc_nextvictim = 0;
-	uc->uc_entries = ALLOC(cache_ptr, size * SPARSENESS);
-	if (uc->uc_entries == NULL) {
-		CACHE_PERROR("enablecache: could not allocate cache data");
-		return(0);
-	}
-	BZERO(uc->uc_entries, cache_ptr, size * SPARSENESS);
-	uc->uc_fifo = ALLOC(cache_ptr, size);
-	if (uc->uc_fifo == NULL) {
-		CACHE_PERROR("enablecache: could not allocate cache fifo");
-		return(0);
-	}
-	BZERO(uc->uc_fifo, cache_ptr, size);
-	su->su_cache = (char *) uc;
-	return(1);
-}
-
-
-/*
- * Set an entry in the cache
- */
-static void
-cache_set(xprt, replylen)
-	SVCXPRT *xprt;
-	u_long replylen;
-{
-	register cache_ptr victim;
-	register cache_ptr *vicp;
-	register struct svcudp_data *su = su_data(xprt);
-	struct udp_cache *uc = (struct udp_cache *) su->su_cache;
-	u_int loc;
-	char *newbuf;
-
-	/*
- 	 * Find space for the new entry, either by
-	 * reusing an old entry, or by mallocing a new one
-	 */
-	victim = uc->uc_fifo[uc->uc_nextvictim];
-	if (victim != NULL) {
-		loc = CACHE_LOC(xprt, victim->cache_xid);
-		for (vicp = &uc->uc_entries[loc];
-		  *vicp != NULL && *vicp != victim;
-		  vicp = &(*vicp)->cache_next)
-				;
-		if (*vicp == NULL) {
-			CACHE_PERROR("cache_set: victim not found");
-			return;
-		}
-		*vicp = victim->cache_next;	/* remote from cache */
-		newbuf = victim->cache_reply;
-	} else {
-		victim = ALLOC(struct cache_node, 1);
-		if (victim == NULL) {
-			CACHE_PERROR("cache_set: victim alloc failed");
-			return;
-		}
-		newbuf = mem_alloc(su->su_iosz);
-		if (newbuf == NULL) {
-			CACHE_PERROR("cache_set: could not allocate new rpc_buffer");
-			return;
-		}
-	}
-
-	/*
-	 * Store it away
-	 */
-	victim->cache_replylen = replylen;
-	victim->cache_reply = rpc_buffer(xprt);
-	rpc_buffer(xprt) = newbuf;
-	xdrmem_create(&(su->su_xdrs), rpc_buffer(xprt), su->su_iosz, XDR_ENCODE);
-	victim->cache_xid = su->su_xid;
-	victim->cache_proc = uc->uc_proc;
-	victim->cache_vers = uc->uc_vers;
-	victim->cache_prog = uc->uc_prog;
-	victim->cache_addr = uc->uc_addr;
-	loc = CACHE_LOC(xprt, victim->cache_xid);
-	victim->cache_next = uc->uc_entries[loc];
-	uc->uc_entries[loc] = victim;
-	uc->uc_fifo[uc->uc_nextvictim++] = victim;
-	uc->uc_nextvictim %= uc->uc_size;
-}
-
-/*
- * Try to get an entry from the cache
- * return 1 if found, 0 if not found
- */
-static int
-cache_get(xprt, msg, replyp, replylenp)
-	SVCXPRT *xprt;
-	struct rpc_msg *msg;
-	char **replyp;
-	u_long *replylenp;
-{
-	u_int loc;
-	register cache_ptr ent;
-	register struct svcudp_data *su = su_data(xprt);
-	register struct udp_cache *uc = (struct udp_cache *) su->su_cache;
-
-#	define EQADDR(a1, a2)	(memcmp(&a1, &a2, sizeof(a1)) == 0)
-
-	loc = CACHE_LOC(xprt, su->su_xid);
-	for (ent = uc->uc_entries[loc]; ent != NULL; ent = ent->cache_next) {
-		if (ent->cache_xid == su->su_xid &&
-		  ent->cache_proc == uc->uc_proc &&
-		  ent->cache_vers == uc->uc_vers &&
-		  ent->cache_prog == uc->uc_prog &&
-		  EQADDR(ent->cache_addr, uc->uc_addr)) {
-			*replyp = ent->cache_reply;
-			*replylenp = ent->cache_replylen;
-			return(1);
-		}
-	}
-	/*
-	 * Failed to find entry
-	 * Remember a few things so we can do a set later
-	 */
-	uc->uc_proc = msg->rm_call.cb_proc;
-	uc->uc_vers = msg->rm_call.cb_vers;
-	uc->uc_prog = msg->rm_call.cb_prog;
-	uc->uc_addr = xprt->xp_raddr;
-	return(0);
-}
-