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
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
|
/*
* DisMan Event MIB:
* Implementation of the mteEventSetTable MIB interface
* See 'mteEvent.c' for active behaviour of this table.
*
* (based on mib2c.table_data.conf output)
*/
#include <net-snmp/net-snmp-config.h>
#include <net-snmp/net-snmp-features.h>
#include <net-snmp/net-snmp-includes.h>
#include <net-snmp/agent/net-snmp-agent-includes.h>
#include "disman/event/mteEvent.h"
#include "disman/event/mteEventSetTable.h"
netsnmp_feature_require(table_tdata)
#ifndef NETSNMP_NO_WRITE_SUPPORT
netsnmp_feature_require(check_vb_type_and_max_size)
netsnmp_feature_require(check_vb_oid)
netsnmp_feature_require(check_vb_truthvalue)
#endif /* NETSNMP_NO_WRITE_SUPPORT */
static netsnmp_table_registration_info *table_info;
/* Initializes the mteEventSetTable module */
void
init_mteEventSetTable(void)
{
static oid mteEventSetTable_oid[] = { 1, 3, 6, 1, 2, 1, 88, 1, 4, 4 };
size_t mteEventSetTable_oid_len = OID_LENGTH(mteEventSetTable_oid);
netsnmp_handler_registration *reg;
/*
* Ensure the (combined) table container is available...
*/
init_event_table_data();
/*
* ... then set up the MIB interface to the mteEventSetTable slice
*/
#ifndef NETSNMP_NO_WRITE_SUPPORT
reg = netsnmp_create_handler_registration("mteEventSetTable",
mteEventSetTable_handler,
mteEventSetTable_oid,
mteEventSetTable_oid_len,
HANDLER_CAN_RWRITE);
#else /* !NETSNMP_NO_WRITE_SUPPORT */
reg = netsnmp_create_handler_registration("mteEventSetTable",
mteEventSetTable_handler,
mteEventSetTable_oid,
mteEventSetTable_oid_len,
HANDLER_CAN_RONLY);
#endif /* !NETSNMP_NO_WRITE_SUPPORT */
table_info = SNMP_MALLOC_TYPEDEF(netsnmp_table_registration_info);
netsnmp_table_helper_add_indexes(table_info,
ASN_OCTET_STR, /* index: mteOwner */
/* index: mteEventName */
ASN_PRIV_IMPLIED_OCTET_STR,
0);
table_info->min_column = COLUMN_MTEEVENTSETOBJECT;
table_info->max_column = COLUMN_MTEEVENTSETCONTEXTNAMEWILDCARD;
/* Register this using the (common) event_table_data container */
netsnmp_tdata_register(reg, event_table_data, table_info);
DEBUGMSGTL(("disman:event:init", "Event Set Table container (%p)\n",
event_table_data));
}
void
shutdown_mteEventSetTable(void)
{
if (table_info) {
netsnmp_table_registration_info_free(table_info);
table_info = NULL;
}
}
/** handles requests for the mteEventSetTable table */
int
mteEventSetTable_handler(netsnmp_mib_handler *handler,
netsnmp_handler_registration *reginfo,
netsnmp_agent_request_info *reqinfo,
netsnmp_request_info *requests)
{
netsnmp_request_info *request;
netsnmp_table_request_info *tinfo;
struct mteEvent *entry;
int ret;
DEBUGMSGTL(("disman:event:mib", "Set Table handler (%d)\n",
reqinfo->mode));
switch (reqinfo->mode) {
/*
* Read-support (also covers GetNext requests)
*/
case MODE_GET:
for (request = requests; request; request = request->next) {
if (request->processed)
continue;
entry = (struct mteEvent *) netsnmp_tdata_extract_entry(request);
tinfo = netsnmp_extract_table_info(request);
/*
* The mteEventSetTable should only contains entries for
* rows where the mteEventActions 'set(1)' bit is set.
* So skip entries where this isn't the case.
*/
if (!entry || !(entry->mteEventActions & MTE_EVENT_SET))
continue;
switch (tinfo->colnum) {
case COLUMN_MTEEVENTSETOBJECT:
snmp_set_var_typed_value(request->requestvb, ASN_OBJECT_ID,
(u_char *) entry->mteSetOID,
entry->mteSetOID_len*sizeof(oid));
break;
case COLUMN_MTEEVENTSETOBJECTWILDCARD:
ret = (entry->flags & MTE_SET_FLAG_OBJWILD ) ?
TV_TRUE : TV_FALSE;
snmp_set_var_typed_integer(request->requestvb, ASN_INTEGER, ret);
break;
case COLUMN_MTEEVENTSETVALUE:
snmp_set_var_typed_integer(request->requestvb, ASN_INTEGER,
entry->mteSetValue);
break;
case COLUMN_MTEEVENTSETTARGETTAG:
snmp_set_var_typed_value(request->requestvb, ASN_OCTET_STR,
(u_char *) entry->mteSetTarget,
strlen(entry->mteSetTarget));
break;
case COLUMN_MTEEVENTSETCONTEXTNAME:
snmp_set_var_typed_value(request->requestvb, ASN_OCTET_STR,
(u_char *) entry->mteSetContext,
strlen(entry->mteSetContext));
break;
case COLUMN_MTEEVENTSETCONTEXTNAMEWILDCARD:
ret = (entry->flags & MTE_SET_FLAG_CTXWILD ) ?
TV_TRUE : TV_FALSE;
snmp_set_var_typed_integer(request->requestvb, ASN_INTEGER, ret);
break;
}
}
break;
#ifndef NETSNMP_NO_WRITE_SUPPORT
/*
* Write-support
*/
case MODE_SET_RESERVE1:
for (request = requests; request; request = request->next) {
if (request->processed)
continue;
tinfo = netsnmp_extract_table_info(request);
/*
* Since the mteEventSetTable only contains entries for
* rows where the mteEventActions 'set(1)' bit is set,
* strictly speaking we should reject assignments where
* this isn't the case.
* But SET requests that include an assignment of the
* 'set(1)' bit at the same time are valid, so would
* need to be accepted. Unfortunately, this assignment
* is only applied in the COMMIT pass, so it's difficult
* to detect whether this holds or not.
*
* Let's fudge things for now, by processing assignments
* even if the 'set(1)' bit isn't set.
*/
switch (tinfo->colnum) {
case COLUMN_MTEEVENTSETOBJECT:
ret = netsnmp_check_vb_oid( request->requestvb );
if (ret != SNMP_ERR_NOERROR) {
netsnmp_set_request_error(reqinfo, request, ret);
return SNMP_ERR_NOERROR;
}
break;
case COLUMN_MTEEVENTSETOBJECTWILDCARD:
case COLUMN_MTEEVENTSETCONTEXTNAMEWILDCARD:
ret = netsnmp_check_vb_truthvalue( request->requestvb );
if (ret != SNMP_ERR_NOERROR) {
netsnmp_set_request_error(reqinfo, request, ret);
return SNMP_ERR_NOERROR;
}
break;
case COLUMN_MTEEVENTSETVALUE:
ret = netsnmp_check_vb_int( request->requestvb );
if (ret != SNMP_ERR_NOERROR) {
netsnmp_set_request_error(reqinfo, request, ret);
return SNMP_ERR_NOERROR;
}
break;
case COLUMN_MTEEVENTSETTARGETTAG:
case COLUMN_MTEEVENTSETCONTEXTNAME:
ret = netsnmp_check_vb_type_and_max_size(
request->requestvb, ASN_OCTET_STR, MTE_STR2_LEN);
if (ret != SNMP_ERR_NOERROR) {
netsnmp_set_request_error(reqinfo, request, ret);
return SNMP_ERR_NOERROR;
}
break;
default:
netsnmp_set_request_error(reqinfo, request,
SNMP_ERR_NOTWRITABLE);
return SNMP_ERR_NOERROR;
}
/*
* The Event MIB is somewhat ambiguous as to whether
* mteEventSetTable (and mteEventNotificationTable)
* entries can be modified once the main mteEventTable
* entry has been marked 'active'.
* But it's clear from discussion on the DisMan mailing
* list is that the intention is not.
*
* So check for whether this row is already active,
* and reject *all* SET requests if it is.
*/
entry = (struct mteEvent *) netsnmp_tdata_extract_entry(request);
if (entry &&
entry->flags & MTE_EVENT_FLAG_ACTIVE ) {
netsnmp_set_request_error(reqinfo, request,
SNMP_ERR_INCONSISTENTVALUE);
return SNMP_ERR_NOERROR;
}
}
break;
case MODE_SET_RESERVE2:
case MODE_SET_FREE:
case MODE_SET_UNDO:
break;
case MODE_SET_ACTION:
for (request = requests; request; request = request->next) {
if (request->processed)
continue;
entry = (struct mteEvent *) netsnmp_tdata_extract_entry(request);
if (!entry) {
/*
* New rows must be created via the RowStatus column
* (in the main mteEventTable)
*/
netsnmp_set_request_error(reqinfo, request,
SNMP_ERR_NOCREATION);
/* or inconsistentName? */
return SNMP_ERR_NOERROR;
}
}
break;
case MODE_SET_COMMIT:
/*
* All these assignments are "unfailable", so it's
* (reasonably) safe to apply them in the Commit phase
*/
for (request = requests; request; request = request->next) {
if (request->processed)
continue;
entry = (struct mteEvent *) netsnmp_tdata_extract_entry(request);
tinfo = netsnmp_extract_table_info(request);
switch (tinfo->colnum) {
case COLUMN_MTEEVENTSETOBJECT:
memset(entry->mteSetOID, 0, sizeof(entry->mteSetOID));
memcpy(entry->mteSetOID, request->requestvb->val.objid,
request->requestvb->val_len);
entry->mteSetOID_len = request->requestvb->val_len/sizeof(oid);
break;
case COLUMN_MTEEVENTSETOBJECTWILDCARD:
if (*request->requestvb->val.integer == TV_TRUE)
entry->flags |= MTE_SET_FLAG_OBJWILD;
else
entry->flags &= ~MTE_SET_FLAG_OBJWILD;
break;
case COLUMN_MTEEVENTSETVALUE:
entry->mteSetValue = *request->requestvb->val.integer;
break;
case COLUMN_MTEEVENTSETTARGETTAG:
memset(entry->mteSetTarget, 0, sizeof(entry->mteSetTarget));
memcpy(entry->mteSetTarget, request->requestvb->val.string,
request->requestvb->val_len);
break;
case COLUMN_MTEEVENTSETCONTEXTNAME:
memset(entry->mteSetContext, 0, sizeof(entry->mteSetContext));
memcpy(entry->mteSetContext, request->requestvb->val.string,
request->requestvb->val_len);
break;
case COLUMN_MTEEVENTSETCONTEXTNAMEWILDCARD:
if (*request->requestvb->val.integer == TV_TRUE)
entry->flags |= MTE_SET_FLAG_CTXWILD;
else
entry->flags &= ~MTE_SET_FLAG_CTXWILD;
break;
}
}
break;
#endif /* !NETSNMP_NO_WRITE_SUPPORT */
}
return SNMP_ERR_NOERROR;
}
|
