17c478bd9Sstevel@tonic-gate /*
27c478bd9Sstevel@tonic-gate * CDDL HEADER START
37c478bd9Sstevel@tonic-gate *
47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*cb5caa98Sdjl * Common Development and Distribution License (the "License").
6*cb5caa98Sdjl * You may not use this file except in compliance with the License.
77c478bd9Sstevel@tonic-gate *
87c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
97c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
107c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions
117c478bd9Sstevel@tonic-gate * and limitations under the License.
127c478bd9Sstevel@tonic-gate *
137c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
147c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
157c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
167c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
177c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
187c478bd9Sstevel@tonic-gate *
197c478bd9Sstevel@tonic-gate * CDDL HEADER END
207c478bd9Sstevel@tonic-gate */
217c478bd9Sstevel@tonic-gate /*
22*cb5caa98Sdjl * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
237c478bd9Sstevel@tonic-gate * Use is subject to license terms.
247c478bd9Sstevel@tonic-gate */
257c478bd9Sstevel@tonic-gate
267c478bd9Sstevel@tonic-gate /*
277c478bd9Sstevel@tonic-gate * Routines to handle gethost* calls in nscd
287c478bd9Sstevel@tonic-gate */
297c478bd9Sstevel@tonic-gate
307c478bd9Sstevel@tonic-gate #include <string.h>
31*cb5caa98Sdjl #include <stdlib.h>
327c478bd9Sstevel@tonic-gate #include <sys/types.h>
33*cb5caa98Sdjl #include <sys/socket.h>
34*cb5caa98Sdjl #include <netinet/in.h>
35*cb5caa98Sdjl #include <arpa/inet.h>
36*cb5caa98Sdjl #include "cache.h"
377c478bd9Sstevel@tonic-gate
38*cb5caa98Sdjl #define hnam_db ctx->nsc_db[0]
39*cb5caa98Sdjl #define addr_db ctx->nsc_db[1]
407c478bd9Sstevel@tonic-gate
41*cb5caa98Sdjl #define NSC_NAME_HOSTS_BYNAME "gethostbyname"
42*cb5caa98Sdjl #define NSC_NAME_HOSTS_BYADDR "gethostbyaddr"
437c478bd9Sstevel@tonic-gate
44*cb5caa98Sdjl static int hostaddr_compar(const void *, const void *);
45*cb5caa98Sdjl static uint_t hostaddr_gethash(nss_XbyY_key_t *, int);
46*cb5caa98Sdjl static void hostaddr_getlogstr(char *, char *, size_t, nss_XbyY_args_t *);
477c478bd9Sstevel@tonic-gate
487c478bd9Sstevel@tonic-gate void
host_init_ctx(nsc_ctx_t * ctx)49*cb5caa98Sdjl host_init_ctx(nsc_ctx_t *ctx) {
50*cb5caa98Sdjl ctx->dbname = NSS_DBNAM_HOSTS;
51*cb5caa98Sdjl ctx->db_count = 2;
52*cb5caa98Sdjl ctx->file_name = "/etc/inet/hosts";
537c478bd9Sstevel@tonic-gate
54*cb5caa98Sdjl hnam_db = make_cache(nsc_key_cis,
55*cb5caa98Sdjl NSS_DBOP_HOSTS_BYNAME,
56*cb5caa98Sdjl NSC_NAME_HOSTS_BYNAME,
57*cb5caa98Sdjl NULL, NULL, NULL, nsc_ht_default, -1);
587c478bd9Sstevel@tonic-gate
59*cb5caa98Sdjl addr_db = make_cache(nsc_key_other,
60*cb5caa98Sdjl NSS_DBOP_HOSTS_BYADDR,
61*cb5caa98Sdjl NSC_NAME_HOSTS_BYADDR,
62*cb5caa98Sdjl hostaddr_compar,
63*cb5caa98Sdjl hostaddr_getlogstr,
64*cb5caa98Sdjl hostaddr_gethash, nsc_ht_default, -1);
657c478bd9Sstevel@tonic-gate }
667c478bd9Sstevel@tonic-gate
677c478bd9Sstevel@tonic-gate static void
hostaddr_getlogstr(char * name,char * whoami,size_t len,nss_XbyY_args_t * argp)68*cb5caa98Sdjl hostaddr_getlogstr(char *name, char *whoami, size_t len,
69*cb5caa98Sdjl nss_XbyY_args_t *argp) {
70*cb5caa98Sdjl char addr[INET6_ADDRSTRLEN];
717c478bd9Sstevel@tonic-gate
72*cb5caa98Sdjl if (inet_ntop(argp->key.hostaddr.type, argp->key.hostaddr.addr, addr,
73*cb5caa98Sdjl sizeof (addr)) == NULL) {
74*cb5caa98Sdjl (void) snprintf(whoami, len, "%s", name);
75*cb5caa98Sdjl } else {
76*cb5caa98Sdjl (void) snprintf(whoami, len, "%s [key=%s, addrtype=%d]",
77*cb5caa98Sdjl name, addr, argp->key.hostaddr.type);
787c478bd9Sstevel@tonic-gate }
797c478bd9Sstevel@tonic-gate }
807c478bd9Sstevel@tonic-gate
81*cb5caa98Sdjl static int
hostaddr_compar(const void * n1,const void * n2)82*cb5caa98Sdjl hostaddr_compar(const void *n1, const void *n2) {
83*cb5caa98Sdjl nsc_entry_t *e1, *e2;
84*cb5caa98Sdjl int res, l1, l2;
85*cb5caa98Sdjl
86*cb5caa98Sdjl e1 = (nsc_entry_t *)n1;
87*cb5caa98Sdjl e2 = (nsc_entry_t *)n2;
88*cb5caa98Sdjl l1 = e1->key.hostaddr.len;
89*cb5caa98Sdjl l2 = e2->key.hostaddr.len;
90*cb5caa98Sdjl res = memcmp(e1->key.hostaddr.addr, e2->key.hostaddr.addr,
91*cb5caa98Sdjl (l2 > l1)?l1:l2);
92*cb5caa98Sdjl return ((res) ? _NSC_INT_KEY_CMP(res, 0) : _NSC_INT_KEY_CMP(l1, l2));
93*cb5caa98Sdjl }
94*cb5caa98Sdjl
95*cb5caa98Sdjl static uint_t
hostaddr_gethash(nss_XbyY_key_t * key,int htsize)96*cb5caa98Sdjl hostaddr_gethash(nss_XbyY_key_t *key, int htsize) {
97*cb5caa98Sdjl return (db_gethash(key->hostaddr.addr,
98*cb5caa98Sdjl key->hostaddr.len, htsize));
997c478bd9Sstevel@tonic-gate }
100