usr/src/cmd/nscd/getnet.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  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
  23  * Use is subject to license terms.
  24  */
  25
  26 #pragma ident   "%Z%%M% %I%     %E% SMI"
  27
  28 /*
  29  * Routines to handle getnet* calls in nscd
  30  */
  31
  32 #include <string.h>
  33 #include <stdlib.h>
  34 #include <sys/types.h>
  35 #include <sys/socket.h>
  36 #include <netinet/in.h>
  37 #include <arpa/inet.h>
  38 #include "cache.h"
  39
  40 #define nam_db  ctx->nsc_db[0]
  41 #define addr_db ctx->nsc_db[1]
  42
  43 #define NSC_NAME_NETWORKS_BYNAME        "getnetbyname"
  44 #define NSC_NAME_NETWORKS_BYADDR        "getnetbyaddr"
  45
  46 static int netaddr_compar(const void *, const void *);
  47 static uint_t netaddr_gethash(nss_XbyY_key_t *, int);
  48 static void netaddr_getlogstr(char *, char *, size_t, nss_XbyY_args_t *);
  49
  50 void
  51 net_init_ctx(nsc_ctx_t *ctx) {
  52         ctx->dbname = NSS_DBNAM_NETWORKS;
  53         ctx->db_count = 2;
  54         ctx->file_name = "/etc/inet/networks";
  55
  56         nam_db = make_cache(nsc_key_ces,
  57                         NSS_DBOP_NETWORKS_BYNAME,
  58                         NSC_NAME_NETWORKS_BYNAME,
  59                         NULL, NULL, NULL, nsc_ht_default, -1);
  60
  61         addr_db = make_cache(nsc_key_other,
  62                         NSS_DBOP_NETWORKS_BYADDR,
  63                         NSC_NAME_NETWORKS_BYADDR,
  64                         netaddr_compar,
  65                         netaddr_getlogstr,
  66                         netaddr_gethash, nsc_ht_default, -1);
  67 }
  68
  69 static void
  70 netaddr_getlogstr(char *name, char *whoami, size_t len, nss_XbyY_args_t *argp) {
  71         if (argp->key.netaddr.type == AF_INET) {
  72                 uint32_t        net;
  73                 uchar_t         *up;
  74
  75                 net = htonl(argp->key.netaddr.net);
  76                 up = (uchar_t *)&net;
  77
  78                 if (up[0])
  79                         (void) snprintf(whoami, len, "%s [key=%d.%d.%d.%d]",
  80                                 name,
  81                                 up[0], up[1], up[2], up[3]);
  82                 else if (up[1])
  83                         (void) snprintf(whoami, len, "%s [key=%d.%d.%d]",
  84                                 name,
  85                                 up[1], up[2], up[3]);
  86                 else if (up[2])
  87                         (void) snprintf(whoami, len, "%s [key=%d.%d]",
  88                                 name,
  89                                 up[2], up[3]);
  90                 else
  91                         (void) snprintf(whoami, len, "%s [key=%d]",
  92                                 name,
  93                                 up[3]);
  94         } else {
  95                 (void) snprintf(whoami, len, "%s [key=%d, %d]",
  96                         name,
  97                         argp->key.netaddr.net, argp->key.netaddr.type);
  98         }
  99 }
 100
 101 static int
 102 netaddr_compar(const void *n1, const void *n2) {
 103         nsc_entry_t     *e1, *e2;
 104
 105         e1 = (nsc_entry_t *)n1;
 106         e2 = (nsc_entry_t *)n2;
 107
 108         if (e1->key.netaddr.type > e2->key.netaddr.type)
 109                 return (1);
 110         else if (e1->key.netaddr.type < e2->key.netaddr.type)
 111                 return (-1);
 112
 113         return (_NSC_INT_KEY_CMP(e1->key.netaddr.net, e2->key.netaddr.net));
 114 }
 115
 116 static uint_t
 117 netaddr_gethash(nss_XbyY_key_t *key, int htsize) {
 118         return (db_gethash(&key->netaddr.net,
 119                         sizeof (key->netaddr.net), htsize));
 120 }