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: stable/9/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
52 static int
val2snmp_truth(uint8_t val)53 val2snmp_truth(uint8_t val)
54 {
55 if (val == 0)
56 return (2);
57
58 return (1);
59 }
60
61 static int
snmp_truth2val(int32_t truth)62 snmp_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
72 int
op_begemot_bridge_pf(struct snmp_context * ctx,struct snmp_value * val,uint sub,uint iidx __unused,enum snmp_op op)73 op_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