1 /*
2 * Copyright (c) 2001-2003
3 * Fraunhofer Institute for Open Communication Systems (FhG Fokus).
4 * All rights reserved.
5 *
6 * Author: Harti Brandt <harti@freebsd.org>
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * $Begemot: bsnmp/snmp_mibII/mibII_rcvaddr.c,v 1.9 2004/08/06 08:47:03 brandt Exp $
30 *
31 * Interface receive address table.
32 */
33 #include "mibII.h"
34 #include "mibII_oid.h"
35
36 /*
37 * find receive address
38 */
39 struct mibrcvaddr *
mib_find_rcvaddr(u_int ifindex,const u_char * addr,size_t addrlen)40 mib_find_rcvaddr(u_int ifindex, const u_char *addr, size_t addrlen)
41 {
42 struct mibrcvaddr *rcv;
43
44 TAILQ_FOREACH(rcv, &mibrcvaddr_list, link)
45 if (rcv->ifindex == ifindex &&
46 rcv->addrlen == addrlen &&
47 memcmp(rcv->addr, addr, addrlen) == 0)
48 return (rcv);
49 return (NULL);
50 }
51
52 /*
53 * Create receive address
54 */
55 struct mibrcvaddr *
mib_rcvaddr_create(struct mibif * ifp,const u_char * addr,size_t addrlen)56 mib_rcvaddr_create(struct mibif *ifp, const u_char *addr, size_t addrlen)
57 {
58 struct mibrcvaddr *rcv;
59 u_int i;
60
61 if (addrlen + OIDLEN_ifRcvAddressEntry + 1 > ASN_MAXOIDLEN)
62 return (NULL);
63
64 if ((rcv = malloc(sizeof(*rcv))) == NULL)
65 return (NULL);
66 rcv->ifindex = ifp->index;
67 rcv->addrlen = addrlen;
68 memcpy(rcv->addr, addr, addrlen);
69 rcv->flags = 0;
70
71 rcv->index.len = addrlen + 2;
72 rcv->index.subs[0] = ifp->index;
73 rcv->index.subs[1] = addrlen;
74 for (i = 0; i < addrlen; i++)
75 rcv->index.subs[i + 2] = addr[i];
76
77 INSERT_OBJECT_OID(rcv, &mibrcvaddr_list);
78
79 return (rcv);
80 }
81
82 /*
83 * Delete a receive address
84 */
85 void
mib_rcvaddr_delete(struct mibrcvaddr * rcv)86 mib_rcvaddr_delete(struct mibrcvaddr *rcv)
87 {
88 TAILQ_REMOVE(&mibrcvaddr_list, rcv, link);
89 free(rcv);
90 }
91
92 int
op_rcvaddr(struct snmp_context * ctx __unused,struct snmp_value * value,u_int sub,u_int iidx __unused,enum snmp_op op)93 op_rcvaddr(struct snmp_context *ctx __unused, struct snmp_value *value,
94 u_int sub, u_int iidx __unused, enum snmp_op op)
95 {
96 struct mibrcvaddr *rcv;
97
98 rcv = NULL; /* make compiler happy */
99
100 switch (op) {
101
102 case SNMP_OP_GETNEXT:
103 if ((rcv = NEXT_OBJECT_OID(&mibrcvaddr_list, &value->var, sub)) == NULL)
104 return (SNMP_ERR_NOSUCHNAME);
105 index_append(&value->var, sub, &rcv->index);
106 break;
107
108 case SNMP_OP_GET:
109 if ((rcv = FIND_OBJECT_OID(&mibrcvaddr_list, &value->var, sub)) == NULL)
110 return (SNMP_ERR_NOSUCHNAME);
111 break;
112
113 case SNMP_OP_SET:
114 if ((rcv = FIND_OBJECT_OID(&mibrcvaddr_list, &value->var, sub)) == NULL)
115 return (SNMP_ERR_NO_CREATION);
116 return (SNMP_ERR_NOT_WRITEABLE);
117
118 case SNMP_OP_ROLLBACK:
119 case SNMP_OP_COMMIT:
120 abort();
121 }
122
123 switch (value->var.subs[sub - 1]) {
124
125 case LEAF_ifRcvAddressStatus:
126 value->v.integer = 1;
127 break;
128
129 case LEAF_ifRcvAddressType:
130 value->v.integer = (rcv->flags & MIBRCVADDR_VOLATILE) ? 2 : 3;
131 break;
132 }
133 return (SNMP_ERR_NOERROR);
134 }
135