180 lines
4.4 KiB
C
180 lines
4.4 KiB
C
/*
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* Sun RPC is a product of Sun Microsystems, Inc. and is provided for
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* unrestricted use provided that this legend is included on all tape
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* media and as a part of the software program in whole or part. Users
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* may copy or modify Sun RPC without charge, but are not authorized
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* to license or distribute it to anyone else except as part of a product or
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* program developed by the user.
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*
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* SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
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* WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
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*
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* Sun RPC is provided with no support and without any obligation on the
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* part of Sun Microsystems, Inc. to assist in its use, correction,
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* modification or enhancement.
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*
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* SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
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* INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
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* OR ANY PART THEREOF.
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*
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* In no event will Sun Microsystems, Inc. be liable for any lost revenue
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* or profits or other special, indirect and consequential damages, even if
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* Sun has been advised of the possibility of such damages.
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*
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* Sun Microsystems, Inc.
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* 2550 Garcia Avenue
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* Mountain View, California 94043
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*/
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/*
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* warmstart.c
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* Allows for gathering of registrations from an earlier dumped file.
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*
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* Copyright (c) 1990 by Sun Microsystems, Inc.
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*/
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/*
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* #ident "@(#)warmstart.c 1.7 93/07/05 SMI"
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* $FreeBSD$/
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*/
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <stdio.h>
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#include <rpc/rpc.h>
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#include <rpc/rpcb_prot.h>
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#include <rpc/xdr.h>
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#ifdef PORTMAP
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#include <netinet/in.h>
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#include <rpc/pmap_prot.h>
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#endif
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#include <syslog.h>
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#include <unistd.h>
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#include "rpcbind.h"
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/*
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* XXX this code is unsafe and is not used. It should be made safe.
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*/
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/* These files keep the pmap_list and rpcb_list in XDR format */
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#define RPCBFILE "/tmp/rpcbind.file"
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#ifdef PORTMAP
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#define PMAPFILE "/tmp/portmap.file"
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#endif
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static bool_t write_struct(char *, xdrproc_t, void *);
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static bool_t read_struct(char *, xdrproc_t, void *);
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static bool_t
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write_struct(char *filename, xdrproc_t structproc, void *list)
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{
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FILE *fp;
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XDR xdrs;
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mode_t omask;
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omask = umask(077);
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fp = fopen(filename, "w");
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if (fp == NULL) {
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int i;
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for (i = 0; i < 10; i++)
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close(i);
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fp = fopen(filename, "w");
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if (fp == NULL) {
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syslog(LOG_ERR,
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"cannot open file = %s for writing", filename);
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syslog(LOG_ERR, "cannot save any registration");
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return (FALSE);
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}
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}
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(void) umask(omask);
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xdrstdio_create(&xdrs, fp, XDR_ENCODE);
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if (structproc(&xdrs, list) == FALSE) {
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syslog(LOG_ERR, "rpcbind: xdr_%s: failed", filename);
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fclose(fp);
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return (FALSE);
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}
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XDR_DESTROY(&xdrs);
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fclose(fp);
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return (TRUE);
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}
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static bool_t
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read_struct(char *filename, xdrproc_t structproc, void *list)
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{
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FILE *fp;
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XDR xdrs;
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struct stat sbuf;
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if (stat(filename, &sbuf) != 0) {
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fprintf(stderr,
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"rpcbind: cannot stat file = %s for reading\n", filename);
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goto error;
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}
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if ((sbuf.st_uid != 0) || (sbuf.st_mode & S_IRWXG) ||
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(sbuf.st_mode & S_IRWXO)) {
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fprintf(stderr,
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"rpcbind: invalid permissions on file = %s for reading\n",
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filename);
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goto error;
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}
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fp = fopen(filename, "r");
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if (fp == NULL) {
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fprintf(stderr,
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"rpcbind: cannot open file = %s for reading\n", filename);
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goto error;
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}
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xdrstdio_create(&xdrs, fp, XDR_DECODE);
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if (structproc(&xdrs, list) == FALSE) {
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fprintf(stderr, "rpcbind: xdr_%s: failed\n", filename);
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fclose(fp);
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goto error;
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}
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XDR_DESTROY(&xdrs);
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fclose(fp);
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return (TRUE);
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error: fprintf(stderr, "rpcbind: will start from scratch\n");
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return (FALSE);
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}
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void
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write_warmstart(void)
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{
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(void) write_struct(RPCBFILE, (xdrproc_t)xdr_rpcblist_ptr, &list_rbl);
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#ifdef PORTMAP
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(void) write_struct(PMAPFILE, (xdrproc_t)xdr_pmaplist_ptr, &list_pml);
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#endif
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}
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void
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read_warmstart(void)
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{
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rpcblist_ptr tmp_rpcbl = NULL;
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#ifdef PORTMAP
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struct pmaplist *tmp_pmapl = NULL;
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#endif
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int ok1, ok2 = TRUE;
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ok1 = read_struct(RPCBFILE, (xdrproc_t)xdr_rpcblist_ptr, &tmp_rpcbl);
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if (ok1 == FALSE)
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return;
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#ifdef PORTMAP
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ok2 = read_struct(PMAPFILE, (xdrproc_t)xdr_pmaplist_ptr, &tmp_pmapl);
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#endif
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if (ok2 == FALSE) {
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xdr_free((xdrproc_t) xdr_rpcblist_ptr, (char *)&tmp_rpcbl);
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return;
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}
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xdr_free((xdrproc_t) xdr_rpcblist_ptr, (char *)&list_rbl);
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list_rbl = tmp_rpcbl;
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#ifdef PORTMAP
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xdr_free((xdrproc_t) xdr_pmaplist_ptr, (char *)&list_pml);
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list_pml = tmp_pmapl;
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#endif
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}
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