freebsd-dev/usr.sbin/rpcbind/warmstart.c

180 lines
4.3 KiB
C
Raw Normal View History

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
2001-03-19 12:50:13 +00:00
/*
* 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
*/
/*
* warmstart.c
* Allows for gathering of registrations from a earlier dumped file.
*
* Copyright (c) 1990 by Sun Microsystems, Inc.
*/
/*
* #ident "@(#)warmstart.c 1.7 93/07/05 SMI"
* $FreeBSD$/
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <stdio.h>
#include <rpc/rpc.h>
#include <rpc/rpcb_prot.h>
#include <rpc/xdr.h>
#ifdef PORTMAP
#include <netinet/in.h>
#include <rpc/pmap_prot.h>
#endif
#include <syslog.h>
#include <unistd.h>
#include "rpcbind.h"
/*
* XXX this code is unsafe and is not used. It should be made safe.
*/
/* These files keep the pmap_list and rpcb_list in XDR format */
#define RPCBFILE "/tmp/rpcbind.file"
#ifdef PORTMAP
#define PMAPFILE "/tmp/portmap.file"
#endif
static bool_t write_struct __P((char *, xdrproc_t, void *));
static bool_t read_struct __P((char *, xdrproc_t, void *));
static bool_t
write_struct(char *filename, xdrproc_t structproc, void *list)
{
FILE *fp;
XDR xdrs;
mode_t omask;
omask = umask(077);
fp = fopen(filename, "w");
if (fp == NULL) {
int i;
for (i = 0; i < 10; i++)
close(i);
fp = fopen(filename, "w");
if (fp == NULL) {
syslog(LOG_ERR,
"cannot open file = %s for writing", filename);
syslog(LOG_ERR, "cannot save any registration");
return (FALSE);
}
}
(void) umask(omask);
xdrstdio_create(&xdrs, fp, XDR_ENCODE);
if (structproc(&xdrs, list) == FALSE) {
syslog(LOG_ERR, "rpcbind: xdr_%s: failed", filename);
fclose(fp);
return (FALSE);
}
XDR_DESTROY(&xdrs);
fclose(fp);
return (TRUE);
}
static bool_t
read_struct(char *filename, xdrproc_t structproc, void *list)
{
FILE *fp;
XDR xdrs;
struct stat sbuf;
if (stat(filename, &sbuf) != 0) {
fprintf(stderr,
"rpcbind: cannot stat file = %s for reading\n", filename);
goto error;
}
if ((sbuf.st_uid != 0) || (sbuf.st_mode & S_IRWXG) ||
(sbuf.st_mode & S_IRWXO)) {
fprintf(stderr,
"rpcbind: invalid permissions on file = %s for reading\n",
filename);
goto error;
}
fp = fopen(filename, "r");
if (fp == NULL) {
fprintf(stderr,
"rpcbind: cannot open file = %s for reading\n", filename);
goto error;
}
xdrstdio_create(&xdrs, fp, XDR_DECODE);
if (structproc(&xdrs, list) == FALSE) {
fprintf(stderr, "rpcbind: xdr_%s: failed\n", filename);
fclose(fp);
goto error;
}
XDR_DESTROY(&xdrs);
fclose(fp);
return (TRUE);
error: fprintf(stderr, "rpcbind: will start from scratch\n");
return (FALSE);
}
void
write_warmstart()
{
(void) write_struct(RPCBFILE, xdr_rpcblist_ptr, &list_rbl);
#ifdef PORTMAP
(void) write_struct(PMAPFILE, xdr_pmaplist_ptr, &list_pml);
#endif
}
void
read_warmstart()
{
rpcblist_ptr tmp_rpcbl = NULL;
#ifdef PORTMAP
struct pmaplist *tmp_pmapl = NULL;
#endif
int ok1, ok2 = TRUE;
ok1 = read_struct(RPCBFILE, xdr_rpcblist_ptr, &tmp_rpcbl);
if (ok1 == FALSE)
return;
#ifdef PORTMAP
ok2 = read_struct(PMAPFILE, xdr_pmaplist_ptr, &tmp_pmapl);
#endif
if (ok2 == FALSE) {
xdr_free((xdrproc_t) xdr_rpcblist_ptr, (char *)&tmp_rpcbl);
return;
}
xdr_free((xdrproc_t) xdr_rpcblist_ptr, (char *)&list_rbl);
list_rbl = tmp_rpcbl;
#ifdef PORTMAP
xdr_free((xdrproc_t) xdr_pmaplist_ptr, (char *)&list_pml);
list_pml = tmp_pmapl;
#endif
}