usr/src/lib/libc/port/nsl/nis_misc.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21
  22 /*
  23  * nis_misc.c
  24  */
  25
  26 /*
  27  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
  28  * Use is subject to license terms.
  29  */
  30
  31
  32 /*
  33  * nis_misc.c
  34  *
  35  * This module contains miscellaneous library functions.
  36  */
  37
  38 #include "mt.h"
  39 #include <string.h>
  40 #include <syslog.h>
  41 #include <malloc.h>
  42 #include <rpc/rpc.h>
  43 #include <rpcsvc/nis.h>
  44 #include <tiuser.h>
  45 #include <netdir.h>
  46 #include <netinet/in.h>
  47 #include <strings.h>
  48 #include "nis_clnt.h"
  49
  50 /*
  51  * In the pre-IPv6 code, secure RPC has a bug such that it doesn't look
  52  * at the endpoint 'family' field when selecting an endpoint to use for
  53  * time synchronization. In order to protect that broken code from itself,
  54  * we set the endpoint 'proto' to 'nc_netid' (i.e., "udp6" or "tcp6")
  55  * rather than 'nc_proto' ("udp"/"tcp") if 'nc_family' is "inet6".
  56  *
  57  * The __nis_netconfig2ep() and __nis_netconfig_matches_ep() service
  58  * functions below simplify endpoint manipulation by implementing the
  59  * rules above.
  60  */
  61
  62 void
  63 __nis_netconfig2ep(struct netconfig *nc, endpoint *ep) {
  64
  65         if (nc == 0 || ep == 0)
  66                 return;
  67
  68         ep->family = strdup(nc->nc_protofmly);
  69
  70         if (strcmp(ep->family, "inet6") == 0) {
  71                 ep->proto = strdup(nc->nc_netid);
  72         } else {
  73                 ep->proto = strdup(nc->nc_proto);
  74         }
  75 }
  76
  77 bool_t
  78 __nis_netconfig_matches_ep(struct netconfig *nc, endpoint *ep) {
  79
  80         if (nc == 0 || ep == 0)
  81                 return (FALSE);
  82
  83         if (strcmp(nc->nc_protofmly, ep->family) != 0)
  84                 return (FALSE);
  85
  86         if (strcmp(ep->family, "inet6") == 0)
  87                 return (strcmp(nc->nc_netid, ep->proto) == 0 ||
  88                         strcmp(nc->nc_proto, ep->proto) == 0);
  89         else
  90                 return (strcmp(nc->nc_proto, ep->proto) == 0);
  91
  92 }