usr/src/cmd/nscd/getnode.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 getipnode* calls in nscd. Note that the
  30  * getnodeby* APIs were renamed getipnodeby*. The interfaces
  31  * related to them in the nscd will remain as getnode*.
  32  */
  33
  34 #include <stdlib.h>
  35 #include <string.h>
  36 #include <strings.h>
  37 #include <sys/types.h>
  38 #include <sys/socket.h>
  39 #include <netinet/in.h>
  40 #include <arpa/inet.h>
  41 #include <inet/ip6.h>
  42 #include "cache.h"
  43
  44 static int ipaddr_compar(const void *, const void *);
  45 static uint_t ipaddr_gethash(nss_XbyY_key_t *, int);
  46 static void ipaddr_getlogstr(char *, char *, size_t, nss_XbyY_args_t *);
  47
  48 static int ipname_compar(const void *, const void *);
  49 static uint_t ipname_gethash(nss_XbyY_key_t *, int);
  50 static void ipname_getlogstr(char *, char *, size_t, nss_XbyY_args_t *);
  51
  52 #define nnam_db ctx->nsc_db[0]
  53 #define addr_db ctx->nsc_db[1]
  54
  55 #define NSC_NAME_IPNODES_BYNAME "getipnodebyname"
  56 #define NSC_NAME_IPNODES_BYADDR "getipnodebyaddr"
  57
  58 void
  59 ipnode_init_ctx(nsc_ctx_t *ctx) {
  60         ctx->dbname = NSS_DBNAM_IPNODES;
  61         ctx->file_name = "/etc/inet/ipnodes";
  62         ctx->db_count = 2;
  63         nnam_db = make_cache(nsc_key_other,
  64                         NSS_DBOP_IPNODES_BYNAME,
  65                         NSC_NAME_IPNODES_BYNAME,
  66                         ipname_compar,
  67                         ipname_getlogstr,
  68                         ipname_gethash, nsc_ht_default, -1);
  69
  70         addr_db = make_cache(nsc_key_other,
  71                         NSS_DBOP_IPNODES_BYADDR,
  72                         NSC_NAME_IPNODES_BYADDR,
  73                         ipaddr_compar,
  74                         ipaddr_getlogstr,
  75                         ipaddr_gethash, nsc_ht_default, -1);
  76 }
  77
  78 static int
  79 ipaddr_compar(const void *n1, const void *n2) {
  80         nsc_entry_t     *e1, *e2;
  81         int             res, l1, l2;
  82
  83         e1 = (nsc_entry_t *)n1;
  84         e2 = (nsc_entry_t *)n2;
  85
  86         if (e1->key.hostaddr.type > e2->key.hostaddr.type)
  87                 return (1);
  88         else if (e1->key.hostaddr.type < e2->key.hostaddr.type)
  89                 return (-1);
  90
  91         l1 = e1->key.hostaddr.len;
  92         l2 = e2->key.hostaddr.len;
  93         res = memcmp(e1->key.hostaddr.addr, e2->key.hostaddr.addr,
  94                 (l2 > l1)?l1:l2);
  95         return ((res) ? _NSC_INT_KEY_CMP(res, 0) : _NSC_INT_KEY_CMP(l1, l2));
  96 }
  97
  98 static uint_t
  99 ipaddr_gethash(nss_XbyY_key_t *key, int htsize) {
 100         return (db_gethash(key->hostaddr.addr,
 101                 key->hostaddr.len, htsize));
 102 }
 103
 104 static void
 105 ipaddr_getlogstr(char *name, char *whoami, size_t len, nss_XbyY_args_t *argp) {
 106         char addr[INET6_ADDRSTRLEN];
 107
 108         if (inet_ntop(argp->key.hostaddr.type, argp->key.hostaddr.addr, addr,
 109                         sizeof (addr)) == NULL) {
 110                 (void) snprintf(whoami, len, "%s", name);
 111         } else {
 112                 (void) snprintf(whoami, len, "%s [key=%s addrtype=%d]",
 113                         name,
 114                         addr, argp->key.hostaddr.type);
 115         }
 116 }
 117
 118 static int
 119 ipname_compar(const void *n1, const void *n2) {
 120         nsc_entry_t     *e1, *e2;
 121         int             res, l1, l2;
 122
 123         e1 = (nsc_entry_t *)n1;
 124         e2 = (nsc_entry_t *)n2;
 125
 126         if (e1->key.ipnode.af_family > e2->key.ipnode.af_family)
 127                 return (1);
 128         else if (e1->key.ipnode.af_family < e2->key.ipnode.af_family)
 129                 return (-1);
 130
 131         l1 = strlen(e1->key.ipnode.name);
 132         l2 = strlen(e2->key.ipnode.name);
 133         res = strncasecmp(e1->key.ipnode.name, e2->key.ipnode.name,
 134                 (l1 > l2)?l1:l2);
 135         return (_NSC_INT_KEY_CMP(res, 0));
 136 }
 137
 138 static uint_t
 139 ipname_gethash(nss_XbyY_key_t *key, int htsize) {
 140         return (cis_gethash(key->ipnode.name, htsize));
 141 }
 142
 143 static void
 144 ipname_getlogstr(char *name, char *whoami, size_t len, nss_XbyY_args_t *argp) {
 145         (void) snprintf(whoami, len, "%s [key=%s:af=%d:flags=%d]",
 146                         name,
 147                         argp->key.ipnode.name,
 148                         argp->key.ipnode.af_family,
 149                         argp->key.ipnode.flags);
 150 }