xref: /freebsd/contrib/bsnmp/snmp_mibII/mibII_rcvaddr.c (revision f06ca4af1879f1cb903660d2a12ba7edcf152938)
1f06ca4afSHartmut Brandt /*
2f06ca4afSHartmut Brandt  * Copyright (c) 2001-2003
3f06ca4afSHartmut Brandt  *	Fraunhofer Institute for Open Communication Systems (FhG Fokus).
4f06ca4afSHartmut Brandt  *	All rights reserved.
5f06ca4afSHartmut Brandt  *
6f06ca4afSHartmut Brandt  * Author: Harti Brandt <harti@freebsd.org>
7f06ca4afSHartmut Brandt  *
8f06ca4afSHartmut Brandt  * Redistribution of this software and documentation and use in source and
9f06ca4afSHartmut Brandt  * binary forms, with or without modification, are permitted provided that
10f06ca4afSHartmut Brandt  * the following conditions are met:
11f06ca4afSHartmut Brandt  *
12f06ca4afSHartmut Brandt  * 1. Redistributions of source code or documentation must retain the above
13f06ca4afSHartmut Brandt  *    copyright notice, this list of conditions and the following disclaimer.
14f06ca4afSHartmut Brandt  * 2. Redistributions in binary form must reproduce the above copyright
15f06ca4afSHartmut Brandt  *    notice, this list of conditions and the following disclaimer in the
16f06ca4afSHartmut Brandt  *    documentation and/or other materials provided with the distribution.
17f06ca4afSHartmut Brandt  * 3. Neither the name of the Institute nor the names of its contributors
18f06ca4afSHartmut Brandt  *    may be used to endorse or promote products derived from this software
19f06ca4afSHartmut Brandt  *    without specific prior written permission.
20f06ca4afSHartmut Brandt  *
21f06ca4afSHartmut Brandt  * THIS SOFTWARE AND DOCUMENTATION IS PROVIDED BY FRAUNHOFER FOKUS
22f06ca4afSHartmut Brandt  * AND ITS CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
23f06ca4afSHartmut Brandt  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
24f06ca4afSHartmut Brandt  * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
25f06ca4afSHartmut Brandt  * FRAUNHOFER FOKUS OR ITS CONTRIBUTORS  BE LIABLE FOR ANY DIRECT, INDIRECT,
26f06ca4afSHartmut Brandt  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
27f06ca4afSHartmut Brandt  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
28f06ca4afSHartmut Brandt  * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
29f06ca4afSHartmut Brandt  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
30f06ca4afSHartmut Brandt  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
31f06ca4afSHartmut Brandt  * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32f06ca4afSHartmut Brandt  *
33f06ca4afSHartmut Brandt  * $Begemot: bsnmp/snmp_mibII/mibII_rcvaddr.c,v 1.7 2003/01/28 13:44:35 hbb Exp $
34f06ca4afSHartmut Brandt  *
35f06ca4afSHartmut Brandt  * Interface receive address table.
36f06ca4afSHartmut Brandt  */
37f06ca4afSHartmut Brandt #include "mibII.h"
38f06ca4afSHartmut Brandt #include "mibII_oid.h"
39f06ca4afSHartmut Brandt 
40f06ca4afSHartmut Brandt /*
41f06ca4afSHartmut Brandt  * find receive address
42f06ca4afSHartmut Brandt  */
43f06ca4afSHartmut Brandt struct mibrcvaddr *
44f06ca4afSHartmut Brandt mib_find_rcvaddr(u_int ifindex, const u_char *addr, size_t addrlen)
45f06ca4afSHartmut Brandt {
46f06ca4afSHartmut Brandt 	struct mibrcvaddr *rcv;
47f06ca4afSHartmut Brandt 
48f06ca4afSHartmut Brandt 	TAILQ_FOREACH(rcv, &mibrcvaddr_list, link)
49f06ca4afSHartmut Brandt 		if (rcv->ifindex == ifindex &&
50f06ca4afSHartmut Brandt 		    rcv->addrlen == addrlen &&
51f06ca4afSHartmut Brandt 		    memcmp(rcv->addr, addr, addrlen) == 0)
52f06ca4afSHartmut Brandt 			return (rcv);
53f06ca4afSHartmut Brandt 	return (NULL);
54f06ca4afSHartmut Brandt }
55f06ca4afSHartmut Brandt 
56f06ca4afSHartmut Brandt /*
57f06ca4afSHartmut Brandt  * Create receive address
58f06ca4afSHartmut Brandt  */
59f06ca4afSHartmut Brandt struct mibrcvaddr *
60f06ca4afSHartmut Brandt mib_rcvaddr_create(struct mibif *ifp, const u_char *addr, size_t addrlen)
61f06ca4afSHartmut Brandt {
62f06ca4afSHartmut Brandt 	struct mibrcvaddr *rcv;
63f06ca4afSHartmut Brandt 	u_int i;
64f06ca4afSHartmut Brandt 
65f06ca4afSHartmut Brandt 	if (addrlen + OIDLEN_ifRcvAddressEntry + 1 > ASN_MAXOIDLEN)
66f06ca4afSHartmut Brandt 		return (NULL);
67f06ca4afSHartmut Brandt 
68f06ca4afSHartmut Brandt 	if ((rcv = malloc(sizeof(*rcv))) == NULL)
69f06ca4afSHartmut Brandt 		return (NULL);
70f06ca4afSHartmut Brandt 	rcv->ifindex = ifp->index;
71f06ca4afSHartmut Brandt 	rcv->addrlen = addrlen;
72f06ca4afSHartmut Brandt 	memcpy(rcv->addr, addr, addrlen);
73f06ca4afSHartmut Brandt 	rcv->flags = 0;
74f06ca4afSHartmut Brandt 
75f06ca4afSHartmut Brandt 	rcv->index.len = addrlen + 2;
76f06ca4afSHartmut Brandt 	rcv->index.subs[0] = ifp->index;
77f06ca4afSHartmut Brandt 	rcv->index.subs[1] = addrlen;
78f06ca4afSHartmut Brandt 	for (i = 0; i < addrlen; i++)
79f06ca4afSHartmut Brandt 		rcv->index.subs[i + 2] = addr[i];
80f06ca4afSHartmut Brandt 
81f06ca4afSHartmut Brandt 	INSERT_OBJECT_OID(rcv, &mibrcvaddr_list);
82f06ca4afSHartmut Brandt 
83f06ca4afSHartmut Brandt 	return (rcv);
84f06ca4afSHartmut Brandt }
85f06ca4afSHartmut Brandt 
86f06ca4afSHartmut Brandt /*
87f06ca4afSHartmut Brandt  * Delete a receive address
88f06ca4afSHartmut Brandt  */
89f06ca4afSHartmut Brandt void
90f06ca4afSHartmut Brandt mib_rcvaddr_delete(struct mibrcvaddr *rcv)
91f06ca4afSHartmut Brandt {
92f06ca4afSHartmut Brandt 	TAILQ_REMOVE(&mibrcvaddr_list, rcv, link);
93f06ca4afSHartmut Brandt 	free(rcv);
94f06ca4afSHartmut Brandt }
95f06ca4afSHartmut Brandt 
96f06ca4afSHartmut Brandt int
97f06ca4afSHartmut Brandt op_rcvaddr(struct snmp_context *ctx __unused, struct snmp_value *value,
98f06ca4afSHartmut Brandt     u_int sub, u_int iidx __unused, enum snmp_op op)
99f06ca4afSHartmut Brandt {
100f06ca4afSHartmut Brandt 	struct mibrcvaddr *rcv;
101f06ca4afSHartmut Brandt 
102f06ca4afSHartmut Brandt 	rcv = NULL;	/* make compiler happy */
103f06ca4afSHartmut Brandt 
104f06ca4afSHartmut Brandt 	switch (op) {
105f06ca4afSHartmut Brandt 
106f06ca4afSHartmut Brandt 	  case SNMP_OP_GETNEXT:
107f06ca4afSHartmut Brandt 		if ((rcv = NEXT_OBJECT_OID(&mibrcvaddr_list, &value->var, sub)) == NULL)
108f06ca4afSHartmut Brandt 			return (SNMP_ERR_NOSUCHNAME);
109f06ca4afSHartmut Brandt 		index_append(&value->var, sub, &rcv->index);
110f06ca4afSHartmut Brandt 		break;
111f06ca4afSHartmut Brandt 
112f06ca4afSHartmut Brandt 	  case SNMP_OP_GET:
113f06ca4afSHartmut Brandt 		if ((rcv = FIND_OBJECT_OID(&mibrcvaddr_list, &value->var, sub)) == NULL)
114f06ca4afSHartmut Brandt 			return (SNMP_ERR_NOSUCHNAME);
115f06ca4afSHartmut Brandt 		break;
116f06ca4afSHartmut Brandt 
117f06ca4afSHartmut Brandt 	  case SNMP_OP_SET:
118f06ca4afSHartmut Brandt 		if ((rcv = FIND_OBJECT_OID(&mibrcvaddr_list, &value->var, sub)) == NULL)
119f06ca4afSHartmut Brandt 			return (SNMP_ERR_NO_CREATION);
120f06ca4afSHartmut Brandt 		return (SNMP_ERR_NOT_WRITEABLE);
121f06ca4afSHartmut Brandt 
122f06ca4afSHartmut Brandt 	  case SNMP_OP_ROLLBACK:
123f06ca4afSHartmut Brandt 	  case SNMP_OP_COMMIT:
124f06ca4afSHartmut Brandt 		abort();
125f06ca4afSHartmut Brandt 	}
126f06ca4afSHartmut Brandt 
127f06ca4afSHartmut Brandt 	switch (value->var.subs[sub - 1]) {
128f06ca4afSHartmut Brandt 
129f06ca4afSHartmut Brandt 	  case LEAF_ifRcvAddressStatus:
130f06ca4afSHartmut Brandt 		value->v.integer = 1;
131f06ca4afSHartmut Brandt 		break;
132f06ca4afSHartmut Brandt 
133f06ca4afSHartmut Brandt 	  case LEAF_ifRcvAddressType:
134f06ca4afSHartmut Brandt 		value->v.integer = (rcv->flags & MIBRCVADDR_VOLATILE) ? 2 : 3;
135f06ca4afSHartmut Brandt 		break;
136f06ca4afSHartmut Brandt 	}
137f06ca4afSHartmut Brandt 	return (SNMP_ERR_NOERROR);
138f06ca4afSHartmut Brandt }
139