/*
* DisMan Event MIB:
* Implementation of the mteEventNotificationTable 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/mteEventNotificationTable.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)
#endif /* NETSNMP_NO_WRITE_SUPPORT */
static netsnmp_table_registration_info *table_info;
/* Initializes the mteEventNotificationTable module */
void
init_mteEventNotificationTable(void)
{
static oid mteEventNotificationTable_oid[] = { 1, 3, 6, 1, 2, 1, 88, 1, 4, 3 };
size_t mteEventNotificationTable_oid_len = OID_LENGTH(mteEventNotificationTable_oid);
netsnmp_handler_registration *reg;
/*
* Ensure the (combined) table container is available...
*/
init_event_table_data();
/*
* ... then set up the MIB interface to the mteEventNotificationTable slice
*/
#ifndef NETSNMP_NO_WRITE_SUPPORT
reg = netsnmp_create_handler_registration("mteEventNotificationTable",
mteEventNotificationTable_handler,
mteEventNotificationTable_oid,
mteEventNotificationTable_oid_len,
HANDLER_CAN_RWRITE);
#else /* !NETSNMP_NO_WRITE_SUPPORT */
reg = netsnmp_create_handler_registration("mteEventNotificationTable",
mteEventNotificationTable_handler,
mteEventNotificationTable_oid,
mteEventNotificationTable_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_MTEEVENTNOTIFICATION;
table_info->max_column = COLUMN_MTEEVENTNOTIFICATIONOBJECTS;
/* Register this using the (common) event_table_data container */
netsnmp_tdata_register(reg, event_table_data, table_info);
DEBUGMSGTL(("disman:event:init", "Event Notify Table container (%p)\n",
event_table_data));
}
void
shutdown_mteEventNotificationTable(void)
{
if (table_info) {
netsnmp_table_registration_info_free(table_info);
table_info = NULL;
}
}
/** handles requests for the mteEventNotificationTable table */
int
mteEventNotificationTable_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", "Notification 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 mteEventNotificationTable should only contains entries
* for rows where the mteEventActions 'notification(0)' bit
* is set. So skip entries where this isn't the case.
*/
if (!entry || !(entry->mteEventActions & MTE_EVENT_NOTIFICATION))
continue;
switch (tinfo->colnum) {
case COLUMN_MTEEVENTNOTIFICATION:
snmp_set_var_typed_value(request->requestvb, ASN_OBJECT_ID,
(u_char *) entry->mteNotification,
entry->mteNotification_len*sizeof(oid));
break;
case COLUMN_MTEEVENTNOTIFICATIONOBJECTSOWNER:
snmp_set_var_typed_value(request->requestvb, ASN_OCTET_STR,
(u_char *) entry->mteNotifyOwner,
strlen(entry->mteNotifyOwner));
break;
case COLUMN_MTEEVENTNOTIFICATIONOBJECTS:
snmp_set_var_typed_value(request->requestvb, ASN_OCTET_STR,
(u_char *) entry->mteNotifyObjects,
strlen(entry->mteNotifyObjects));
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 mteEventNotificationTable only contains entries
* for rows where the mteEventActions 'notification(0)'
* bit is set, strictly speaking we should reject
* assignments where this isn't the case.
* But SET requests that include an assignment of the
* 'notification(0)' 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 'notification(0)' bit isn't set.
*/
switch (tinfo->colnum) {
case COLUMN_MTEEVENTNOTIFICATION:
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_MTEEVENTNOTIFICATIONOBJECTSOWNER:
case COLUMN_MTEEVENTNOTIFICATIONOBJECTS:
ret = netsnmp_check_vb_type_and_max_size(
request->requestvb, ASN_OCTET_STR, MTE_STR1_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
* mteEventNotificationTable (and mteEventSetTable)
* 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_MTEEVENTNOTIFICATION:
memset(entry->mteNotification, 0, sizeof(entry->mteNotification));
memcpy(entry->mteNotification, request->requestvb->val.objid,
request->requestvb->val_len);
entry->mteNotification_len = request->requestvb->val_len/sizeof(oid);
break;
case COLUMN_MTEEVENTNOTIFICATIONOBJECTSOWNER:
memset(entry->mteNotifyOwner, 0, sizeof(entry->mteNotifyOwner));
memcpy(entry->mteNotifyOwner, request->requestvb->val.string,
request->requestvb->val_len);
break;
case COLUMN_MTEEVENTNOTIFICATIONOBJECTS:
memset(entry->mteNotifyObjects, 0, sizeof(entry->mteNotifyObjects));
memcpy(entry->mteNotifyObjects, request->requestvb->val.string,
request->requestvb->val_len);
break;
}
}
break;
#endif /* !NETSNMP_NO_WRITE_SUPPORT */
}
return SNMP_ERR_NOERROR;
}