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
ipnode_init_ctx(nsc_ctx_t * ctx)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
ipaddr_compar(const void * n1,const void * n2)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
ipaddr_gethash(nss_XbyY_key_t * key,int htsize)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
ipaddr_getlogstr(char * name,char * whoami,size_t len,nss_XbyY_args_t * argp)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
ipname_compar(const void * n1,const void * n2)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
ipname_gethash(nss_XbyY_key_t * key,int htsize)139 ipname_gethash(nss_XbyY_key_t *key, int htsize) {
140 return (cis_gethash(key->ipnode.name, htsize));
141 }
142
143 static void
ipname_getlogstr(char * name,char * whoami,size_t len,nss_XbyY_args_t * argp)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 }
151