1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
|
/*
* tcpConnTable MIB architecture support for OpenBSD
*/
#include <net-snmp/net-snmp-config.h>
#include <net-snmp/net-snmp-includes.h>
#include <net-snmp/agent/net-snmp-agent-includes.h>
#include <net-snmp/data_access/tcpConn.h>
#include <net-snmp/agent/auto_nlist.h>
#include "tcp-mib/tcpConnectionTable/tcpConnectionTable_constants.h"
#include "tcp-mib/data_access/tcpConn_private.h"
#include "mibII/mibII_common.h"
#if HAVE_NETINET_TCP_H
#include <netinet/tcp.h>
#endif
#if HAVE_NETINET_TCP_TIMER_H
#include <netinet/tcp_timer.h>
#endif
#if HAVE_NETINET_TCPIP_H
#include <netinet/tcpip.h>
#endif
#if HAVE_NETINET_TCP_VAR_H
#include <netinet/tcp_var.h>
#endif
static int _load(netsnmp_container *container, u_int flags);
/*
* initialize arch specific storage
*
* @retval 0: success
* @retval <0: error
*/
int
netsnmp_arch_tcpconn_entry_init(netsnmp_tcpconn_entry *entry)
{
/*
* init
*/
return 0;
}
/*
* cleanup arch specific storage
*/
void
netsnmp_arch_tcpconn_entry_cleanup(netsnmp_tcpconn_entry *entry)
{
/*
* cleanup
*/
}
/*
* copy arch specific storage
*/
int
netsnmp_arch_tcpconn_entry_copy(netsnmp_tcpconn_entry *lhs,
netsnmp_tcpconn_entry *rhs)
{
return 0;
}
/*
* delete an entry
*/
int
netsnmp_arch_tcpconn_entry_delete(netsnmp_tcpconn_entry *entry)
{
if (NULL == entry)
return -1;
/** xxx-rks:9 tcpConn delete not implemented */
return -1;
}
/**
*
* @retval 0 no errors
* @retval !0 errors
*/
int
netsnmp_arch_tcpconn_container_load(netsnmp_container *container,
u_int load_flags )
{
int rc = 0;
DEBUGMSGTL(("access:tcpconn:container",
"tcpconn_container_arch_load (flags %x)\n", load_flags));
if (NULL == container) {
snmp_log(LOG_ERR, "no container specified/found for access_tcpconn\n");
return -1;
}
rc = _load(container, load_flags);
return rc;
}
/**
*
* @retval 0 no errors
* @retval !0 errors
*/
static int
_load(netsnmp_container *container, u_int load_flags)
{
struct inpcbtable table;
struct inpcb *head, *next, *prev;
struct inpcb inpcb;
struct tcpcb tcpcb;
int StateMap[] = { 1, 2, 3, 4, 5, 8, 6, 10, 9, 7, 11 };
netsnmp_tcpconn_entry *entry;
int state;
int rc = 0;
/*
* Read in the buffer containing the TCP table data
*/
if (!auto_nlist(TCP_SYMBOL, (char *)&table, sizeof(table))) {
DEBUGMSGTL(("tcp-mib/tcpConn_openbsd", "Failed to read tcp_symbol\n"));
return -1;
}
prev = (struct inpcb *)&CIRCLEQ_FIRST(&table.inpt_queue);
prev = NULL;
head = next = CIRCLEQ_FIRST(&table.inpt_queue);
while (next) {
if (!NETSNMP_KLOOKUP(next, (char *)&inpcb, sizeof(inpcb))) {
DEBUGMSGTL(("tcp-mib/data_access/tcpConn", "klookup inpcb failed\n"));
break;
}
if (prev && CIRCLEQ_PREV(&inpcb, inp_queue) != prev) {
snmp_log(LOG_ERR,"tcbtable link error\n");
break;
}
prev = next;
next = CIRCLEQ_NEXT(&inpcb, inp_queue);
if (!NETSNMP_KLOOKUP(inpcb.inp_ppcb, (char *)&tcpcb, sizeof(tcpcb))) {
DEBUGMSGTL(("tcp-mib/data_access/tcpConn", "klookup tcpcb failed\n"));
break;
}
state = StateMap[tcpcb.t_state];
if (load_flags) {
if (state == TCPCONNECTIONSTATE_LISTEN) {
if (load_flags & NETSNMP_ACCESS_TCPCONN_LOAD_NOLISTEN) {
DEBUGMSGT(("verbose:access:tcpconn:container",
" skipping listen\n"));
goto skip;
}
}
else if (load_flags & NETSNMP_ACCESS_TCPCONN_LOAD_ONLYLISTEN) {
DEBUGMSGT(("verbose:access:tcpconn:container",
" skipping non-listen\n"));
goto skip;
}
}
#if !defined(NETSNMP_ENABLE_IPV6)
if (inpcb.inp_flags & INP_IPV6)
goto skip;
#endif
entry = netsnmp_access_tcpconn_entry_create();
if(NULL == entry) {
rc = -3;
break;
}
/** oddly enough, these appear to already be in network order */
entry->loc_port = ntohs(inpcb.inp_lport);
entry->rmt_port = ntohs(inpcb.inp_fport);
entry->tcpConnState = state;
entry->pid = 0;
/** the addr string may need work */
if (inpcb.inp_flags & INP_IPV6) {
entry->loc_addr_len = entry->rmt_addr_len = 16;
memcpy(entry->loc_addr, &inpcb.inp_laddr6, 16);
memcpy(entry->rmt_addr, &inpcb.inp_faddr6, 16);
}
else {
entry->loc_addr_len = entry->rmt_addr_len = 4;
memcpy(entry->loc_addr, &inpcb.inp_laddr, 4);
memcpy(entry->rmt_addr, &inpcb.inp_faddr, 4);
}
DEBUGMSGTL(("tcp-mib/data_access", "tcp %d %d %d\n",
entry->loc_addr_len, entry->loc_port, entry->rmt_port));
/*
* add entry to container
*/
entry->arbitrary_index = CONTAINER_SIZE(container) + 1;
CONTAINER_INSERT(container, entry);
skip:
if (head == next)
break;
}
if(rc<0)
return rc;
return 0;
}
|
