bridge_pf.c revision 165253 
1/*-
2 * Copyright (c) 2006 Shteryana Shopova <syrinx@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * Bridge MIB implementation for SNMPd.
27 * Bridge pfil controls.
28 *
29 * $FreeBSD: head/usr.sbin/bsnmpd/modules/snmp_bridge/bridge_pf.c 165253 2006-12-15 20:01:57Z syrinx $
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#include "bridge_tree.h"
50#include "bridge_snmp.h"
51
52static int
53val2snmp_truth(uint8_t val)
54{
55	if (val == 0)
56		return (2);
57
58	return (1);
59}
60
61static int
62snmp_truth2val(int32_t truth)
63{
64	if (truth == 2)
65		return (0);
66	else if (truth == 1)
67		return (1);
68
69	return (-1);
70}
71
72int
73op_begemot_bridge_pf(struct snmp_context *ctx, struct snmp_value *val,
74	uint sub, uint iidx __unused, enum snmp_op op)
75{
76	int k_val;
77
78	if (val->var.subs[sub - 1] > LEAF_begemotBridgeLayer2PfStatus)
79		return (SNMP_ERR_NOSUCHNAME);
80
81	switch (op) {
82		case SNMP_OP_GETNEXT:
83			abort();
84		case SNMP_OP_ROLLBACK:
85			bridge_do_pfctl(val->var.subs[sub - 1] - 1,
86			    op, &(ctx->scratch->int1));
87				return (SNMP_ERR_NOERROR);
88
89		case SNMP_OP_COMMIT:
90			return (SNMP_ERR_NOERROR);
91
92		case SNMP_OP_SET:
93			ctx->scratch->int1 =
94			    bridge_get_pfval(val->var.subs[sub - 1]);
95
96			if ((k_val = snmp_truth2val(val->v.integer)) < 0)
97				return (SNMP_ERR_BADVALUE);
98			return (SNMP_ERR_NOERROR);
99
100		case SNMP_OP_GET:
101			switch (val->var.subs[sub - 1]) {
102			    case LEAF_begemotBridgePfilStatus:
103			    case LEAF_begemotBridgePfilMembers:
104			    case LEAF_begemotBridgePfilIpOnly:
105			    case LEAF_begemotBridgeLayer2PfStatus:
106				if (bridge_do_pfctl(val->var.subs[sub - 1] - 1,
107				    op, &k_val) < 0)
108					return (SNMP_ERR_GENERR);
109				val->v.integer = val2snmp_truth(k_val);
110				return (SNMP_ERR_NOERROR);
111			}
112			abort();
113	}
114
115	abort();
116}
117