/*
* Create a new row in the expression table
*/
struct expExpression *
expExpression_createEntry(char *expOwner, char *expName, int fixed)
{
netsnmp_tdata_row *row;
row = expExpression_createRow(expOwner, expName, fixed);
return row ? (struct expExpression *)row->data : NULL;
}
/** handles requests for the expExpressionTable table */
int
expExpressionTable_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 expExpression *entry;
char expOwner[EXP_STR1_LEN+1];
char expName[ EXP_STR1_LEN+1];
long ret;
DEBUGMSGTL(("disman:expr:mib", "Expression 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 expExpression *)
netsnmp_tdata_extract_entry(request);
tinfo = netsnmp_extract_table_info(request);
if (!entry || !(entry->flags & EXP_FLAG_VALID))
continue;
switch (tinfo->colnum) {
case COLUMN_EXPEXPRESSION:
snmp_set_var_typed_value(request->requestvb, ASN_OCTET_STR,
(u_char*)entry->expExpression,
strlen(entry->expExpression));
break;
case COLUMN_EXPEXPRESSIONVALUETYPE:
snmp_set_var_typed_integer(request->requestvb, ASN_INTEGER,
entry->expValueType);
break;
case COLUMN_EXPEXPRESSIONCOMMENT:
snmp_set_var_typed_value(request->requestvb, ASN_OCTET_STR,
(u_char*)entry->expComment,
strlen(entry->expComment));
break;
case COLUMN_EXPEXPRESSIONDELTAINTERVAL:
snmp_set_var_typed_integer(request->requestvb, ASN_INTEGER,
entry->expDeltaInterval);
break;
case COLUMN_EXPEXPRESSIONPREFIX:
/*
* XXX - Need to search expObjectTable for a suitable OID
*/
/*
* Empty OIDs (len=0) are converted into .0.0
* by the SNMP library automatically :-(
*/
if ( entry->expPrefix_len ) {
snmp_set_var_typed_value(request->requestvb, ASN_OBJECT_ID,
(u_char *) entry->expPrefix,
entry->expPrefix_len*sizeof(oid));
} else {
/* XXX - possibly not needed */
request->requestvb->type = ASN_OBJECT_ID;
request->requestvb->val_len = 0;
}
break;
case COLUMN_EXPEXPRESSIONERRORS:
snmp_set_var_typed_integer(request->requestvb, ASN_COUNTER,
entry->expErrorCount);
break;
case COLUMN_EXPEXPRESSIONENTRYSTATUS:
/* What would indicate 'notReady' ? */
ret = (entry->flags & EXP_FLAG_ACTIVE) ?
RS_ACTIVE : RS_NOTINSERVICE;
snmp_set_var_typed_integer(request->requestvb, ASN_INTEGER, ret);
break;
}
}
break;
/*
* Write-support
*/
case MODE_SET_RESERVE1:
for (request = requests; request; request = request->next) {
if (request->processed)
continue;
entry = (struct expExpression *)
netsnmp_tdata_extract_entry(request);
tinfo = netsnmp_extract_table_info(request);
switch (tinfo->colnum) {
case COLUMN_EXPEXPRESSION:
ret = netsnmp_check_vb_type_and_max_size(
request->requestvb, ASN_OCTET_STR, EXP_STR3_LEN);
/* XXX - check new expression is syntactically valid */
if (ret != SNMP_ERR_NOERROR) {
netsnmp_set_request_error(reqinfo, request, ret);
return SNMP_ERR_NOERROR;
}
break;
case COLUMN_EXPEXPRESSIONVALUETYPE:
ret = netsnmp_check_vb_int_range(request->requestvb, 1, 8);
if (ret != SNMP_ERR_NOERROR) {
netsnmp_set_request_error(reqinfo, request, ret);
return SNMP_ERR_NOERROR;
}
break;
case COLUMN_EXPEXPRESSIONCOMMENT:
ret = netsnmp_check_vb_type_and_max_size(
request->requestvb, ASN_OCTET_STR, EXP_STR2_LEN);
if (ret != SNMP_ERR_NOERROR) {
netsnmp_set_request_error(reqinfo, request, ret);
return SNMP_ERR_NOERROR;
}
break;
case COLUMN_EXPEXPRESSIONDELTAINTERVAL:
ret = netsnmp_check_vb_int_range(request->requestvb, 0, 86400);
if (ret != SNMP_ERR_NOERROR) {
netsnmp_set_request_error(reqinfo, request, ret);
return SNMP_ERR_NOERROR;
}
break;
case COLUMN_EXPEXPRESSIONENTRYSTATUS:
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;
}
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_EXPEXPRESSIONENTRYSTATUS:
switch (*request->requestvb->val.integer) {
case RS_CREATEANDGO:
case RS_CREATEANDWAIT:
/*
* Create an (empty) new row structure
*/
memset(expOwner, 0, sizeof(expOwner));
memcpy(expOwner, tinfo->indexes->val.string,
tinfo->indexes->val_len);
memset(expName, 0, sizeof(expName));
memcpy(expName,
tinfo->indexes->next_variable->val.string,
tinfo->indexes->next_variable->val_len);
row = expExpression_createRow(expOwner, expName, 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_EXPEXPRESSIONENTRYSTATUS:
switch (*request->requestvb->val.integer) {
case RS_CREATEANDGO:
case RS_CREATEANDWAIT:
/*
* Tidy up after a failed row creation request
*/
entry = (struct expExpression *)
netsnmp_tdata_extract_entry(request);
if (entry &&
!(entry->flags & EXP_FLAG_VALID)) {
row = (netsnmp_tdata_row *)
netsnmp_tdata_extract_row(request);
expExpression_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 expExpression *)
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 expExpression *)
netsnmp_tdata_extract_entry(request);
tinfo = netsnmp_extract_table_info(request);
switch (tinfo->colnum) {
case COLUMN_EXPEXPRESSION:
memset(entry->expExpression, 0, EXP_STR3_LEN+1);
memcpy(entry->expExpression,
request->requestvb->val.string,
request->requestvb->val_len);
break;
case COLUMN_EXPEXPRESSIONVALUETYPE:
entry->expValueType = *request->requestvb->val.integer;
break;
case COLUMN_EXPEXPRESSIONCOMMENT:
memset(entry->expComment, 0, EXP_STR2_LEN+1);
memcpy(entry->expComment,
request->requestvb->val.string,
request->requestvb->val_len);
break;
case COLUMN_EXPEXPRESSIONDELTAINTERVAL:
entry->expDeltaInterval = *request->requestvb->val.integer;
break;
case COLUMN_EXPEXPRESSIONENTRYSTATUS:
switch (*request->requestvb->val.integer) {
case RS_ACTIVE:
entry->flags |= EXP_FLAG_ACTIVE;
expExpression_enable( entry );
break;
case RS_NOTINSERVICE:
entry->flags &= ~EXP_FLAG_ACTIVE;
expExpression_disable( entry );
break;
case RS_CREATEANDGO:
entry->flags |= EXP_FLAG_ACTIVE;
entry->flags |= EXP_FLAG_VALID;
entry->session =
netsnmp_iquery_pdu_session(reqinfo->asp->pdu);
expExpression_enable( entry );
break;
case RS_CREATEANDWAIT:
entry->flags |= EXP_FLAG_VALID;
entry->session =
netsnmp_iquery_pdu_session(reqinfo->asp->pdu);
break;
case RS_DESTROY:
row = (netsnmp_tdata_row *)
netsnmp_tdata_extract_row(request);
expExpression_removeEntry(row);
}
}
}
break;
}
DEBUGMSGTL(("disman:expr:mib", "Expression Table handler - done \n"));
return SNMP_ERR_NOERROR;
}
