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 ether_*to* calls in nscd
28 */
29
30 #include <stdlib.h>
31 #include <net/if.h>
32 #include <netinet/in.h>
33 #include <netinet/if_ether.h>
34 #include <string.h>
35 #include "cache.h"
36
37 #define host_db ctx->nsc_db[0]
38 #define addr_db ctx->nsc_db[1]
39
40 #define NSC_NAME_ETHERS_HOSTTON "ether_hostton"
41 #define NSC_NAME_ETHERS_NTOHOST "ether_ntohost"
42
43 static void ether_getlogstr(char *, char *, size_t, nss_XbyY_args_t *);
44 static int ether_compar(const void *, const void *);
45 static uint_t ether_gethash(nss_XbyY_key_t *, int);
46
47 void
ether_init_ctx(nsc_ctx_t * ctx)48 ether_init_ctx(nsc_ctx_t *ctx) {
49 ctx->dbname = NSS_DBNAM_ETHERS;
50 ctx->file_name = "/etc/ethers";
51 ctx->db_count = 2;
52 host_db = make_cache(nsc_key_cis,
53 NSS_DBOP_ETHERS_HOSTTON,
54 NSC_NAME_ETHERS_HOSTTON,
55 NULL, NULL, NULL, nsc_ht_default, -1);
56
57 addr_db = make_cache(nsc_key_other,
58 NSS_DBOP_ETHERS_NTOHOST,
59 NSC_NAME_ETHERS_NTOHOST,
60 ether_compar,
61 ether_getlogstr,
62 ether_gethash, nsc_ht_default, -1);
63 }
64
65 static int
ether_compar(const void * n1,const void * n2)66 ether_compar(const void *n1, const void *n2) {
67 nsc_entry_t *e1, *e2;
68 int res;
69
70 e1 = (nsc_entry_t *)n1;
71 e2 = (nsc_entry_t *)n2;
72 if (ether_cmp(e1->key.ether, e2->key.ether) != 0) {
73 res = memcmp(e1->key.ether, e2->key.ether,
74 sizeof (struct ether_addr));
75 return (_NSC_INT_KEY_CMP(res, 0));
76 }
77 return (0);
78 }
79
80 static uint_t
ether_gethash(nss_XbyY_key_t * key,int htsize)81 ether_gethash(nss_XbyY_key_t *key, int htsize) {
82 return (db_gethash(key->ether, sizeof (struct ether_addr),
83 htsize));
84 }
85
86 static void
ether_getlogstr(char * name,char * whoami,size_t len,nss_XbyY_args_t * argp)87 ether_getlogstr(char *name, char *whoami, size_t len, nss_XbyY_args_t *argp) {
88 struct ether_addr *e;
89 e = (struct ether_addr *)argp->key.ether;
90 (void) snprintf(whoami, len, "%s [key=%x:%x:%x:%x:%x:%x]",
91 name,
92 e->ether_addr_octet[0], e->ether_addr_octet[1],
93 e->ether_addr_octet[2], e->ether_addr_octet[3],
94 e->ether_addr_octet[4], e->ether_addr_octet[5]);
95 }
96