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