1/*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2006 Shteryana Shopova <syrinx@FreeBSD.org>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
28 * Bridge MIB implementation for SNMPd.
29 * Bridge pfil controls.
30 */
31
32#include <sys/types.h>
33#include <sys/sysctl.h>
34#include <sys/socket.h>
35
36#include <net/ethernet.h>
37#include <net/if.h>
38#include <net/if_mib.h>
39#include <net/if_types.h>
40
41#include <errno.h>
42#include <string.h>
43#include <stdlib.h>
44#include <syslog.h>
45
46#include <bsnmp/snmpmod.h>
47#include <bsnmp/snmp_mibII.h>
48
49#define	SNMPTREE_TYPES
50#include "bridge_tree.h"
51#include "bridge_snmp.h"
52
53static int
54val2snmp_truth(uint8_t val)
55{
56	if (val == 0)
57		return (2);
58
59	return (1);
60}
61
62static int
63snmp_truth2val(int32_t truth)
64{
65	if (truth == 2)
66		return (0);
67	else if (truth == 1)
68		return (1);
69
70	return (-1);
71}
72
73int
74op_begemot_bridge_pf(struct snmp_context *ctx, struct snmp_value *val,
75	uint sub, uint iidx __unused, enum snmp_op op)
76{
77	int k_val;
78
79	if (val->var.subs[sub - 1] > LEAF_begemotBridgeLayer2PfStatus)
80		return (SNMP_ERR_NOSUCHNAME);
81
82	switch (op) {
83		case SNMP_OP_GETNEXT:
84			abort();
85		case SNMP_OP_ROLLBACK:
86			bridge_do_pfctl(val->var.subs[sub - 1] - 1,
87			    op, &(ctx->scratch->int1));
88				return (SNMP_ERR_NOERROR);
89
90		case SNMP_OP_COMMIT:
91			return (SNMP_ERR_NOERROR);
92
93		case SNMP_OP_SET:
94			ctx->scratch->int1 =
95			    bridge_get_pfval(val->var.subs[sub - 1]);
96
97			if ((k_val = snmp_truth2val(val->v.integer)) < 0)
98				return (SNMP_ERR_BADVALUE);
99			return (SNMP_ERR_NOERROR);
100
101		case SNMP_OP_GET:
102			switch (val->var.subs[sub - 1]) {
103			    case LEAF_begemotBridgePfilStatus:
104			    case LEAF_begemotBridgePfilMembers:
105			    case LEAF_begemotBridgePfilIpOnly:
106			    case LEAF_begemotBridgeLayer2PfStatus:
107				if (bridge_do_pfctl(val->var.subs[sub - 1] - 1,
108				    op, &k_val) < 0)
109					return (SNMP_ERR_GENERR);
110				val->v.integer = val2snmp_truth(k_val);
111				return (SNMP_ERR_NOERROR);
112			}
113			abort();
114	}
115
116	abort();
117}
118