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 ether_*to* calls in nscd
30 */
31
32 #include <stdlib.h>
33 #include <net/if.h>
34 #include <netinet/in.h>
35 #include <netinet/if_ether.h>
36 #include <string.h>
37 #include "cache.h"
38
39 #define host_db ctx->nsc_db[0]
40 #define addr_db ctx->nsc_db[1]
41
42 #define NSC_NAME_ETHERS_HOSTTON "ether_hostton"
43 #define NSC_NAME_ETHERS_NTOHOST "ether_ntohost"
44
45 static void ether_getlogstr(char *, char *, size_t, nss_XbyY_args_t *);
46 static int ether_compar(const void *, const void *);
47 static uint_t ether_gethash(nss_XbyY_key_t *, int);
48
49 void
ether_init_ctx(nsc_ctx_t * ctx)50 ether_init_ctx(nsc_ctx_t *ctx) {
51 ctx->dbname = NSS_DBNAM_ETHERS;
52 ctx->file_name = "/etc/ethers";
53 ctx->db_count = 2;
54 host_db = make_cache(nsc_key_cis,
55 NSS_DBOP_ETHERS_HOSTTON,
56 NSC_NAME_ETHERS_HOSTTON,
57 NULL, NULL, NULL, nsc_ht_default, -1);
58
59 addr_db = make_cache(nsc_key_other,
60 NSS_DBOP_ETHERS_NTOHOST,
61 NSC_NAME_ETHERS_NTOHOST,
62 ether_compar,
63 ether_getlogstr,
64 ether_gethash, nsc_ht_default, -1);
65 }
66
67 static int
ether_compar(const void * n1,const void * n2)68 ether_compar(const void *n1, const void *n2) {
69 nsc_entry_t *e1, *e2;
70 int res;
71
72 e1 = (nsc_entry_t *)n1;
73 e2 = (nsc_entry_t *)n2;
74 if (ether_cmp(e1->key.ether, e2->key.ether) != 0) {
75 res = memcmp(e1->key.ether, e2->key.ether,
76 sizeof (struct ether_addr));
77 return (_NSC_INT_KEY_CMP(res, 0));
78 }
79 return (0);
80 }
81
82 static uint_t
ether_gethash(nss_XbyY_key_t * key,int htsize)83 ether_gethash(nss_XbyY_key_t *key, int htsize) {
84 return (db_gethash(key->ether, sizeof (struct ether_addr),
85 htsize));
86 }
87
88 static void
ether_getlogstr(char * name,char * whoami,size_t len,nss_XbyY_args_t * argp)89 ether_getlogstr(char *name, char *whoami, size_t len, nss_XbyY_args_t *argp) {
90 struct ether_addr *e;
91 e = (struct ether_addr *)argp->key.ether;
92 (void) snprintf(whoami, len, "%s [key=%x:%x:%x:%x:%x:%x]",
93 name,
94 e->ether_addr_octet[0], e->ether_addr_octet[1],
95 e->ether_addr_octet[2], e->ether_addr_octet[3],
96 e->ether_addr_octet[4], e->ether_addr_octet[5]);
97 }
98