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 /* 27 * Routines to handle gethost* calls in nscd 28 */ 29 30 #include <string.h> 31 #include <stdlib.h> 32 #include <sys/types.h> 33 #include <sys/socket.h> 34 #include <netinet/in.h> 35 #include <arpa/inet.h> 36 #include "cache.h" 37 38 #define hnam_db ctx->nsc_db[0] 39 #define addr_db ctx->nsc_db[1] 40 41 #define NSC_NAME_HOSTS_BYNAME "gethostbyname" 42 #define NSC_NAME_HOSTS_BYADDR "gethostbyaddr" 43 44 static int hostaddr_compar(const void *, const void *); 45 static uint_t hostaddr_gethash(nss_XbyY_key_t *, int); 46 static void hostaddr_getlogstr(char *, char *, size_t, nss_XbyY_args_t *); 47 48 void 49 host_init_ctx(nsc_ctx_t *ctx) { 50 ctx->dbname = NSS_DBNAM_HOSTS; 51 ctx->db_count = 2; 52 ctx->file_name = "/etc/inet/hosts"; 53 54 hnam_db = make_cache(nsc_key_cis, 55 NSS_DBOP_HOSTS_BYNAME, 56 NSC_NAME_HOSTS_BYNAME, 57 NULL, NULL, NULL, nsc_ht_default, -1); 58 59 addr_db = make_cache(nsc_key_other, 60 NSS_DBOP_HOSTS_BYADDR, 61 NSC_NAME_HOSTS_BYADDR, 62 hostaddr_compar, 63 hostaddr_getlogstr, 64 hostaddr_gethash, nsc_ht_default, -1); 65 } 66 67 static void 68 hostaddr_getlogstr(char *name, char *whoami, size_t len, 69 nss_XbyY_args_t *argp) { 70 char addr[INET6_ADDRSTRLEN]; 71 72 if (inet_ntop(argp->key.hostaddr.type, argp->key.hostaddr.addr, addr, 73 sizeof (addr)) == NULL) { 74 (void) snprintf(whoami, len, "%s", name); 75 } else { 76 (void) snprintf(whoami, len, "%s [key=%s, addrtype=%d]", 77 name, addr, argp->key.hostaddr.type); 78 } 79 } 80 81 static int 82 hostaddr_compar(const void *n1, const void *n2) { 83 nsc_entry_t *e1, *e2; 84 int res, l1, l2; 85 86 e1 = (nsc_entry_t *)n1; 87 e2 = (nsc_entry_t *)n2; 88 l1 = e1->key.hostaddr.len; 89 l2 = e2->key.hostaddr.len; 90 res = memcmp(e1->key.hostaddr.addr, e2->key.hostaddr.addr, 91 (l2 > l1)?l1:l2); 92 return ((res) ? _NSC_INT_KEY_CMP(res, 0) : _NSC_INT_KEY_CMP(l1, l2)); 93 } 94 95 static uint_t 96 hostaddr_gethash(nss_XbyY_key_t *key, int htsize) { 97 return (db_gethash(key->hostaddr.addr, 98 key->hostaddr.len, htsize)); 99 } 100