/*
* Create a new row in the object table
*/
struct expObject *
expObject_createEntry(char *expOwner, char *expName, long expIndex, int fixed)
{
netsnmp_tdata_row *row;
row = expObject_createRow(expOwner, expName, expIndex, fixed);
return row ? (struct expObject *)row->data : NULL;
}
/** handles requests for the expObjectTable table */
int
expObjectTable_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 expObject *entry;
struct expExpression *exp;
char expOwner[EXP_STR1_LEN+1];
char expName[ EXP_STR1_LEN+1];
long objIndex;
long ret;
netsnmp_variable_list *vp;
DEBUGMSGTL(("disman:expr:mib", "Expression Object 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) {
entry = (struct expObject *)netsnmp_tdata_extract_entry(request);
tinfo = netsnmp_extract_table_info(request);
if (!entry || !(entry->flags & EXP_OBJ_FLAG_VALID))
continue;
switch (tinfo->colnum) {
case COLUMN_EXPOBJECTID:
snmp_set_var_typed_value(request->requestvb, ASN_OBJECT_ID,
(u_char *) entry->expObjectID,
entry->expObjectID_len*sizeof(oid));
break;
case COLUMN_EXPOBJECTIDWILDCARD:
ret = (entry->flags & EXP_OBJ_FLAG_OWILD) ?
TV_TRUE : TV_FALSE;
snmp_set_var_typed_integer(request->requestvb, ASN_INTEGER, ret);
break;
case COLUMN_EXPOBJECTSAMPLETYPE:
snmp_set_var_typed_integer(request->requestvb, ASN_INTEGER,
entry->expObjectSampleType);
break;
case COLUMN_EXPOBJECTDELTADISCONTINUITYID:
/*
* "This object [and the next two] are instantiated only if
* expObjectSampleType is 'deltaValue' or 'changedValue'"
*/
if ( entry->expObjectSampleType == 1 )
continue;
snmp_set_var_typed_value(request->requestvb, ASN_OBJECT_ID,
(u_char *) entry->expObjDeltaD,
entry->expObjDeltaD_len*sizeof(oid));
break;
case COLUMN_EXPOBJECTDISCONTINUITYIDWILDCARD:
if ( entry->expObjectSampleType == 1 )
continue;
ret = (entry->flags & EXP_OBJ_FLAG_DWILD) ?
TV_TRUE : TV_FALSE;
snmp_set_var_typed_integer(request->requestvb, ASN_INTEGER, ret);
break;
case COLUMN_EXPOBJECTDISCONTINUITYIDTYPE:
if ( entry->expObjectSampleType == 1 )
continue;
snmp_set_var_typed_integer(request->requestvb, ASN_INTEGER,
entry->expObjDiscontinuityType);
break;
case COLUMN_EXPOBJECTCONDITIONAL:
snmp_set_var_typed_value(request->requestvb, ASN_OBJECT_ID,
(u_char *) entry->expObjCond,
entry->expObjCond_len*sizeof(oid));
break;
case COLUMN_EXPOBJECTCONDITIONALWILDCARD:
ret = (entry->flags & EXP_OBJ_FLAG_CWILD) ?
TV_TRUE : TV_FALSE;
snmp_set_var_typed_integer(request->requestvb, ASN_INTEGER, ret);
break;
case COLUMN_EXPOBJECTENTRYSTATUS:
/* What would indicate 'notReady' ? */
ret = (entry->flags & EXP_OBJ_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) {
entry = (struct expObject *)
netsnmp_tdata_extract_entry(request);
tinfo = netsnmp_extract_table_info(request);
switch (tinfo->colnum) {
case COLUMN_EXPOBJECTID:
case COLUMN_EXPOBJECTDELTADISCONTINUITYID:
case COLUMN_EXPOBJECTCONDITIONAL:
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_EXPOBJECTIDWILDCARD:
case COLUMN_EXPOBJECTDISCONTINUITYIDWILDCARD:
case COLUMN_EXPOBJECTCONDITIONALWILDCARD:
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_EXPOBJECTSAMPLETYPE:
case COLUMN_EXPOBJECTDISCONTINUITYIDTYPE:
ret = netsnmp_check_vb_int_range(request->requestvb, 1, 3);
if (ret != SNMP_ERR_NOERROR) {
netsnmp_set_request_error(reqinfo, request, ret);
return SNMP_ERR_NOERROR;
}
break;
case COLUMN_EXPOBJECTENTRYSTATUS:
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) {
tinfo = netsnmp_extract_table_info(request);
switch (tinfo->colnum) {
case COLUMN_EXPOBJECTENTRYSTATUS:
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);
vp = tinfo->indexes->next_variable->next_variable;
objIndex = *vp->val.integer;
row = expObject_createRow(expOwner, expName, objIndex, 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) {
tinfo = netsnmp_extract_table_info(request);
switch (tinfo->colnum) {
case COLUMN_EXPOBJECTENTRYSTATUS:
switch (*request->requestvb->val.integer) {
case RS_CREATEANDGO:
case RS_CREATEANDWAIT:
/*
* Tidy up after a failed row creation request
*/
entry = (struct expObject *)
netsnmp_tdata_extract_entry(request);
if (entry &&
!(entry->flags & EXP_OBJ_FLAG_VALID)) {
row = (netsnmp_tdata_row *)
netsnmp_tdata_extract_row(request);
expObject_removeEntry( row );
}
}
}
}
break;
case MODE_SET_ACTION:
for (request = requests; request; request = request->next) {
tinfo = netsnmp_extract_table_info(request);
entry = (struct expObject *)
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
*/
ret = 0; /* Flag to re-check expExpressionPrefix settings */
for (request = requests; request; request = request->next) {
entry = (struct expObject *) netsnmp_tdata_extract_entry(request);
tinfo = netsnmp_extract_table_info(request);
switch (tinfo->colnum) {
case COLUMN_EXPOBJECTID:
memset(entry->expObjectID, 0, sizeof(entry->expObjectID));
memcpy(entry->expObjectID, request->requestvb->val.string,
request->requestvb->val_len);
entry->expObjectID_len = request->requestvb->val_len;
break;
case COLUMN_EXPOBJECTIDWILDCARD:
if (*request->requestvb->val.integer == TV_TRUE)
entry->flags |= EXP_OBJ_FLAG_OWILD;
else
entry->flags &= ~EXP_OBJ_FLAG_OWILD;
break;
case COLUMN_EXPOBJECTSAMPLETYPE:
entry->expObjectSampleType = *request->requestvb->val.integer;
break;
case COLUMN_EXPOBJECTDELTADISCONTINUITYID:
memset(entry->expObjDeltaD, 0, sizeof(entry->expObjDeltaD));
memcpy(entry->expObjDeltaD, request->requestvb->val.string,
request->requestvb->val_len);
entry->expObjDeltaD_len = request->requestvb->val_len/sizeof(oid);
/* XXX
if ( snmp_oid_compare( entry->expObjDeltaD,
entry->expObjDeltaD_len,
sysUpTime_inst,
sysUpTime_inst_len ) != 0 )
entry->flags |= EXP_OBJ_FLAG_DDISC;
*/
/*
* If the OID used for the expExpressionPrefix object
* has changed, then update the expression structure.
*/
if ( entry->flags & EXP_OBJ_FLAG_PREFIX ) {
exp = expExpression_getEntry( entry->expOwner,
entry->expName );
memcpy( exp->expPrefix, entry->expObjDeltaD,
MAX_OID_LEN*sizeof(oid));
exp->expPrefix_len = entry->expObjDeltaD_len;
}
break;
case COLUMN_EXPOBJECTDISCONTINUITYIDWILDCARD:
if (*request->requestvb->val.integer == TV_TRUE) {
/*
* Possible new prefix OID candidate
* Can't set the value here, since the OID
* assignment might not have been processed yet.
*/
exp = expExpression_getEntry( entry->expOwner,
entry->expName );
if (exp && exp->expPrefix_len == 0 )
ret = 1; /* Set the prefix later */
entry->flags |= EXP_OBJ_FLAG_DWILD;
} else {
if ( entry->flags | EXP_OBJ_FLAG_PREFIX ) {
exp = expExpression_getEntry( entry->expOwner,
entry->expName );
memset( exp->expPrefix, 0, MAX_OID_LEN*sizeof(oid));
exp->expPrefix_len = 0;
ret = 1; /* Need a new prefix OID */
}
entry->flags &= ~EXP_OBJ_FLAG_DWILD;
}
break;
case COLUMN_EXPOBJECTDISCONTINUITYIDTYPE:
entry->expObjDiscontinuityType =
*request->requestvb->val.integer;
break;
case COLUMN_EXPOBJECTCONDITIONAL:
memset(entry->expObjCond, 0, sizeof(entry->expObjCond));
memcpy(entry->expObjCond, request->requestvb->val.string,
request->requestvb->val_len);
entry->expObjCond_len = request->requestvb->val_len/sizeof(oid);
break;
case COLUMN_EXPOBJECTCONDITIONALWILDCARD:
if (*request->requestvb->val.integer == TV_TRUE)
entry->flags |= EXP_OBJ_FLAG_CWILD;
else
entry->flags &= ~EXP_OBJ_FLAG_CWILD;
break;
case COLUMN_EXPOBJECTENTRYSTATUS:
switch (*request->requestvb->val.integer) {
case RS_ACTIVE:
entry->flags |= EXP_OBJ_FLAG_ACTIVE;
break;
case RS_NOTINSERVICE:
entry->flags &= ~EXP_OBJ_FLAG_ACTIVE;
break;
case RS_CREATEANDGO:
entry->flags |= EXP_OBJ_FLAG_ACTIVE;
entry->flags |= EXP_OBJ_FLAG_VALID;
break;
case RS_CREATEANDWAIT:
entry->flags |= EXP_OBJ_FLAG_VALID;
break;
case RS_DESTROY:
row = (netsnmp_tdata_row *)
netsnmp_tdata_extract_row(request);
expObject_removeEntry(row);
}
}
}
/*
* Need to check for changes in expExpressionPrefix handling
*/
for (request = requests; request; request = request->next) {
entry = (struct expObject *) netsnmp_tdata_extract_entry(request);
tinfo = netsnmp_extract_table_info(request);
switch (tinfo->colnum) {
case COLUMN_EXPOBJECTDISCONTINUITYIDWILDCARD:
/*
* If a column has just been marked as wild,
* then consider using it as the prefix OID
*/
if (*request->requestvb->val.integer == TV_TRUE) {
exp = expExpression_getEntry( entry->expOwner,
entry->expName );
if ( exp->expPrefix_len == 0 ) {
memcpy( exp->expPrefix, entry->expObjDeltaD,
MAX_OID_LEN*sizeof(oid));
exp->expPrefix_len = entry->expObjDeltaD_len;
entry->flags |= EXP_OBJ_FLAG_PREFIX;
}
}
/*
* If it's just been marked as non-wildcarded
* then we need to look for a new candidate.
*/
else {
}
break;
}
}
break;
}
DEBUGMSGTL(("disman:expr:mib", "Expression Object handler - done \n"));
return SNMP_ERR_NOERROR;
}