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 gethost* 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 hnam_db ctx->nsc_db[0] 41 #define addr_db ctx->nsc_db[1] 42 43 #define NSC_NAME_HOSTS_BYNAME "gethostbyname" 44 #define NSC_NAME_HOSTS_BYADDR "gethostbyaddr" 45 46 static int hostaddr_compar(const void *, const void *); 47 static uint_t hostaddr_gethash(nss_XbyY_key_t *, int); 48 static void hostaddr_getlogstr(char *, char *, size_t, nss_XbyY_args_t *); 49 50 void 51 host_init_ctx(nsc_ctx_t *ctx) { 52 ctx->dbname = NSS_DBNAM_HOSTS; 53 ctx->db_count = 2; 54 ctx->file_name = "/etc/inet/hosts"; 55 56 hnam_db = make_cache(nsc_key_cis, 57 NSS_DBOP_HOSTS_BYNAME, 58 NSC_NAME_HOSTS_BYNAME, 59 NULL, NULL, NULL, nsc_ht_default, -1); 60 61 addr_db = make_cache(nsc_key_other, 62 NSS_DBOP_HOSTS_BYADDR, 63 NSC_NAME_HOSTS_BYADDR, 64 hostaddr_compar, 65 hostaddr_getlogstr, 66 hostaddr_gethash, nsc_ht_default, -1); 67 } 68 69 static void 70 hostaddr_getlogstr(char *name, char *whoami, size_t len, 71 nss_XbyY_args_t *argp) { 72 char addr[INET6_ADDRSTRLEN]; 73 74 if (inet_ntop(argp->key.hostaddr.type, argp->key.hostaddr.addr, addr, 75 sizeof (addr)) == NULL) { 76 (void) snprintf(whoami, len, "%s", name); 77 } else { 78 (void) snprintf(whoami, len, "%s [key=%s, addrtype=%d]", 79 name, addr, argp->key.hostaddr.type); 80 } 81 } 82 83 static int 84 hostaddr_compar(const void *n1, const void *n2) { 85 nsc_entry_t *e1, *e2; 86 int res, l1, l2; 87 88 e1 = (nsc_entry_t *)n1; 89 e2 = (nsc_entry_t *)n2; 90 l1 = e1->key.hostaddr.len; 91 l2 = e2->key.hostaddr.len; 92 res = memcmp(e1->key.hostaddr.addr, e2->key.hostaddr.addr, 93 (l2 > l1)?l1:l2); 94 return ((res) ? _NSC_INT_KEY_CMP(res, 0) : _NSC_INT_KEY_CMP(l1, l2)); 95 } 96 97 static uint_t 98 hostaddr_gethash(nss_XbyY_key_t *key, int htsize) { 99 return (db_gethash(key->hostaddr.addr, 100 key->hostaddr.len, htsize)); 101 } 102