148 lines
3.0 KiB
C
Executable File
148 lines
3.0 KiB
C
Executable File
/*
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* warmstart.c
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* Allows for gathering of registrations from a 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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#ident "@(#)warmstart.c 1.6 94/09/21 SMI"
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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 <sys/types.h>
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#include <sys/stat.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 "rpcbind.h"
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#include <sys/syslog.h>
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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();
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static bool_t read_struct();
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static bool_t
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write_struct(filename, structproc, list)
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char *filename;
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xdrproc_t structproc;
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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(filename, structproc, list)
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char *filename;
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xdrproc_t structproc;
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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()
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{
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(void) write_struct(RPCBFILE, xdr_rpcblist_ptr, &list_rbl);
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#ifdef PORTMAP
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(void) write_struct(PMAPFILE, 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()
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{
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rpcblist_ptr tmp_rpcbl = NULL;
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#ifdef PORTMAP
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pmaplist_ptr tmp_pmapl = NULL;
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#endif
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int ok1, ok2 = TRUE;
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ok1 = read_struct(RPCBFILE, 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, 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 = (pmaplist *)tmp_pmapl;
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#endif
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}
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