| /* |
| * DisMan Expression MIB: |
| * Implementation of the expExpressionTable MIB interface |
| * See 'expExpression.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 "utilities/iquery.h" |
| #include "disman/expr/expExpression.h" |
| #include "disman/expr/expExpressionTable.h" |
| |
| /* Initializes the expExpressionTable module */ |
| void |
| init_expExpressionTable(void) |
| { |
| static oid expExpressionTable_oid[] = { 1, 3, 6, 1, 2, 1, 90, 1, 2, 1 }; |
| size_t expExpressionTable_oid_len = OID_LENGTH(expExpressionTable_oid); |
| netsnmp_handler_registration *reg; |
| netsnmp_table_registration_info *table_info; |
| |
| /* |
| * Ensure the expression table container is available... |
| */ |
| init_expr_table_data(); |
| |
| /* |
| * ... then set up the MIB interface to the expExpressionTable slice |
| */ |
| reg = netsnmp_create_handler_registration("expExpressionTable", |
| expExpressionTable_handler, |
| expExpressionTable_oid, |
| expExpressionTable_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, |
| 0); |
| |
| table_info->min_column = COLUMN_EXPEXPRESSION; |
| table_info->max_column = COLUMN_EXPEXPRESSIONENTRYSTATUS; |
| |
| /* Register this using the (common) expr_table_data container */ |
| netsnmp_tdata_register(reg, expr_table_data, table_info); |
| DEBUGMSGTL(("disman:expr:init", "Expression Table container (%x)\n", |
| expr_table_data)); |
| } |
| |
| |
| /** 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; |
| } |
