| /* |
| * DisMan Expression MIB: |
| * Implementation of the expExpressionObjectTable MIB interface |
| * See 'expObject.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-includes.h> |
| #include <net-snmp/agent/net-snmp-agent-includes.h> |
| #include "disman/expr/expObject.h" |
| #include "disman/expr/expObjectTable.h" |
| |
| |
| /* Initializes the expObjectTable module */ |
| void |
| init_expObjectTable(void) |
| { |
| static oid expObjectTable_oid[] = { 1, 3, 6, 1, 2, 1, 90, 1, 2, 3 }; |
| size_t expObjectTable_oid_len = OID_LENGTH(expObjectTable_oid); |
| netsnmp_handler_registration *reg; |
| netsnmp_table_registration_info *table_info; |
| |
| /* |
| * Ensure the expObject table container is available... |
| */ |
| init_expObject_table_data(); |
| |
| /* |
| * ... then set up the MIB interface to the expObjectTable |
| */ |
| reg = netsnmp_create_handler_registration("expObjectTable", |
| expObjectTable_handler, |
| expObjectTable_oid, |
| expObjectTable_oid_len, |
| HANDLER_CAN_RWRITE); |
| |
| table_info = SNMP_MALLOC_TYPEDEF(netsnmp_table_registration_info); |
| netsnmp_table_helper_add_indexes(table_info, |
| /* index: expExpressionOwner */ |
| ASN_OCTET_STR, |
| /* index: expExpressionName */ |
| ASN_OCTET_STR, |
| /* index: expObjectIndex */ |
| ASN_UNSIGNED, |
| 0); |
| |
| table_info->min_column = COLUMN_EXPOBJECTID; |
| table_info->max_column = COLUMN_EXPOBJECTENTRYSTATUS; |
| |
| /* Register this using the common expObject_table_data container */ |
| netsnmp_tdata_register(reg, expObject_table_data, table_info); |
| DEBUGMSGTL(("disman:expr:init", "Expression Object Table container (%p)\n", |
| expObject_table_data)); |
| } |
| |
| |
| /** 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) { |
| if (request->processed) |
| continue; |
| |
| 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) { |
| if (request->processed) |
| continue; |
| |
| 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) { |
| if (request->processed) |
| continue; |
| |
| 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) { |
| if (request->processed) |
| continue; |
| |
| 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) { |
| if (request->processed) |
| continue; |
| |
| 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) { |
| if (request->processed) |
| continue; |
| |
| 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; |
| } |