/*
* Find or create the specified event entry
*/
static struct mteEvent *
_find_mteEvent_entry( const char *owner, const char *ename )
{
netsnmp_variable_list owner_var, ename_var;
netsnmp_tdata_row *row;
/*
* If there's already an existing entry,
* then use that...
*/
memset(&owner_var, 0, sizeof(netsnmp_variable_list));
memset(&ename_var, 0, sizeof(netsnmp_variable_list));
snmp_set_var_typed_value(&owner_var, ASN_OCTET_STR, owner, strlen(owner));
snmp_set_var_typed_value(&ename_var, ASN_PRIV_IMPLIED_OCTET_STR,
ename, strlen(ename));
owner_var.next_variable = &ename_var;
row = netsnmp_tdata_row_get_byidx( event_table_data, &owner_var );
/*
* ... otherwise, create a new one
*/
if (!row)
row = mteEvent_createEntry( owner, ename, 0 );
if (!row)
return NULL;
/* return (struct mteEvent *)netsnmp_tdata_row_entry( row ); */
return (struct mteEvent *)row->data;
}
void _init_builtin_mteEvent (const char *event, const char *oname, oid * trapOID, size_t trapOID_len)
{
char ename[MTE_STR1_LEN + 1];
netsnmp_tdata_row *row;
struct mteEvent *entry;
memset (ename, 0, sizeof (ename));
ename[0] = '_';
memcpy (ename + 1, event, strlen (event));
row = mteEvent_createEntry ("_snmpd", ename, 1);
if (!row || !row->data)
return;
entry = (struct mteEvent *) row->data;
entry->mteEventActions = MTE_EVENT_NOTIFICATION;
entry->mteNotification_len = trapOID_len;
memcpy (entry->mteNotification, trapOID, trapOID_len * sizeof (oid));
memcpy (entry->mteNotifyOwner, "_snmpd", 6);
memcpy (entry->mteNotifyObjects, oname, strlen (oname));
entry->flags |= MTE_EVENT_FLAG_ENABLED | MTE_EVENT_FLAG_ACTIVE | MTE_EVENT_FLAG_VALID;
}
/** handles requests for the mteEventTable table */
int
mteEventTable_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;
netsnmp_tdata_row *row;
struct mteEvent *entry;
char mteOwner[MTE_STR1_LEN+1];
char mteEName[MTE_STR1_LEN+1];
long ret;
DEBUGMSGTL(("disman:event:mib", "Event 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);
if (!entry || !(entry->flags & MTE_EVENT_FLAG_VALID))
continue;
switch (tinfo->colnum) {
case COLUMN_MTEEVENTCOMMENT:
snmp_set_var_typed_value(request->requestvb, ASN_OCTET_STR,
entry->mteEventComment,
strlen(entry->mteEventComment));
break;
case COLUMN_MTEEVENTACTIONS:
snmp_set_var_typed_value(request->requestvb, ASN_OCTET_STR,
&entry->mteEventActions, 1);
break;
case COLUMN_MTEEVENTENABLED:
ret = (entry->flags & MTE_EVENT_FLAG_ENABLED ) ?
TV_TRUE : TV_FALSE;
snmp_set_var_typed_integer(request->requestvb, ASN_INTEGER, ret);
break;
case COLUMN_MTEEVENTENTRYSTATUS:
ret = (entry->flags & MTE_EVENT_FLAG_ACTIVE ) ?
RS_ACTIVE : RS_NOTINSERVICE;
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;
entry = (struct mteEvent *) netsnmp_tdata_extract_entry(request);
tinfo = netsnmp_extract_table_info(request);
switch (tinfo->colnum) {
case COLUMN_MTEEVENTCOMMENT:
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;
}
/*
* Can't modify the comment of an active row
* (No good reason for this, but that's what the MIB says!)
*/
if (entry &&
entry->flags & MTE_EVENT_FLAG_ACTIVE ) {
netsnmp_set_request_error(reqinfo, request,
SNMP_ERR_INCONSISTENTVALUE);
return SNMP_ERR_NOERROR;
}
break;
case COLUMN_MTEEVENTACTIONS:
ret = netsnmp_check_vb_type_and_size(
request->requestvb, ASN_OCTET_STR, 1);
if (ret != SNMP_ERR_NOERROR) {
netsnmp_set_request_error(reqinfo, request, ret);
return SNMP_ERR_NOERROR;
}
/*
* Can't modify the event types of an active row
* (A little more understandable perhaps,
* but still an unnecessary restriction IMO)
*/
if (entry &&
entry->flags & MTE_EVENT_FLAG_ACTIVE ) {
netsnmp_set_request_error(reqinfo, request,
SNMP_ERR_INCONSISTENTVALUE);
return SNMP_ERR_NOERROR;
}
break;
case COLUMN_MTEEVENTENABLED:
ret = netsnmp_check_vb_truthvalue(request->requestvb);
if (ret != SNMP_ERR_NOERROR) {
netsnmp_set_request_error(reqinfo, request, ret);
return SNMP_ERR_NOERROR;
}
/*
* The published version of the Event MIB forbids
* enabling (or disabling) an active row, which
* would make this object completely pointless!
* Fortunately this ludicrous decision has since been corrected.
*/
break;
case COLUMN_MTEEVENTENTRYSTATUS:
ret = netsnmp_check_vb_rowstatus(request->requestvb,
(entry ? RS_ACTIVE : RS_NONEXISTENT));
if (ret != SNMP_ERR_NOERROR) {
netsnmp_set_request_error(reqinfo, request, ret);
return SNMP_ERR_NOERROR;
}
/* An active row can only be deleted */
if (entry &&
entry->flags & MTE_EVENT_FLAG_ACTIVE &&
*request->requestvb->val.integer == RS_NOTINSERVICE ) {
netsnmp_set_request_error(reqinfo, request,
SNMP_ERR_INCONSISTENTVALUE);
return SNMP_ERR_NOERROR;
}
break;
default:
netsnmp_set_request_error(reqinfo, request,
SNMP_ERR_NOTWRITABLE);
return SNMP_ERR_NOERROR;
}
}
break;
case MODE_SET_RESERVE2:
for (request = requests; request; request = request->next) {
if (request->processed)
continue;
tinfo = netsnmp_extract_table_info(request);
switch (tinfo->colnum) {
case COLUMN_MTEEVENTENTRYSTATUS:
switch (*request->requestvb->val.integer) {
case RS_CREATEANDGO:
case RS_CREATEANDWAIT:
/*
* Create an (empty) new row structure
*/
memset(mteOwner, 0, sizeof(mteOwner));
memcpy(mteOwner, tinfo->indexes->val.string,
tinfo->indexes->val_len);
memset(mteEName, 0, sizeof(mteEName));
memcpy(mteEName,
tinfo->indexes->next_variable->val.string,
tinfo->indexes->next_variable->val_len);
row = mteEvent_createEntry(mteOwner, mteEName, 0);
if (!row) {
netsnmp_set_request_error(reqinfo, request,
SNMP_ERR_RESOURCEUNAVAILABLE);
return SNMP_ERR_NOERROR;
}
netsnmp_insert_tdata_row( request, row );
}
}
}
break;
case MODE_SET_FREE:
for (request = requests; request; request = request->next) {
if (request->processed)
continue;
tinfo = netsnmp_extract_table_info(request);
switch (tinfo->colnum) {
case COLUMN_MTEEVENTENTRYSTATUS:
switch (*request->requestvb->val.integer) {
case RS_CREATEANDGO:
case RS_CREATEANDWAIT:
/*
* Tidy up after a failed row creation request
*/
entry = (struct mteEvent *)
netsnmp_tdata_extract_entry(request);
if (entry &&
!(entry->flags & MTE_EVENT_FLAG_VALID)) {
row = (netsnmp_tdata_row *)
netsnmp_tdata_extract_row(request);
mteEvent_removeEntry( row );
}
}
}
}
break;
case MODE_SET_ACTION:
for (request = requests; request; request = request->next) {
if (request->processed)
continue;
tinfo = netsnmp_extract_table_info(request);
entry = (struct mteEvent *) netsnmp_tdata_extract_entry(request);
if (!entry) {
/*
* New rows must be created via the RowStatus column
*/
netsnmp_set_request_error(reqinfo, request,
SNMP_ERR_NOCREATION);
/* or inconsistentName? */
return SNMP_ERR_NOERROR;
}
}
break;
case MODE_SET_UNDO:
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_MTEEVENTCOMMENT:
memset(entry->mteEventComment, 0,
sizeof(entry->mteEventComment));
memcpy(entry->mteEventComment,
request->requestvb->val.string,
request->requestvb->val_len);
break;
case COLUMN_MTEEVENTACTIONS:
entry->mteEventActions = request->requestvb->val.string[0];
break;
case COLUMN_MTEEVENTENABLED:
if (*request->requestvb->val.integer == TV_TRUE)
entry->flags |= MTE_EVENT_FLAG_ENABLED;
else
entry->flags &= ~MTE_EVENT_FLAG_ENABLED;
break;
case COLUMN_MTEEVENTENTRYSTATUS:
switch (*request->requestvb->val.integer) {
case RS_ACTIVE:
entry->flags |= MTE_EVENT_FLAG_ACTIVE;
break;
case RS_CREATEANDGO:
entry->flags |= MTE_EVENT_FLAG_ACTIVE;
/* fall-through */
case RS_CREATEANDWAIT:
entry->flags |= MTE_EVENT_FLAG_VALID;
entry->session =
netsnmp_iquery_pdu_session(reqinfo->asp->pdu);
break;
case RS_DESTROY:
row = (netsnmp_tdata_row *)
netsnmp_tdata_extract_row(request);
mteEvent_removeEntry(row);
}
}
}
break;
#endif /* !NETSNMP_NO_WRITE_SUPPORT */
}
DEBUGMSGTL(("disman:event:mib", "Table handler, done\n"));
return SNMP_ERR_NOERROR;
}
