/* * DisMan Event MIB: * Implementation of the mteEventTable MIB interface * See 'mteEvent.c' for active behaviour of this table. * * (based on mib2c.table_data.conf output) */ #include #include #include #include #include "utilities/iquery.h" #include "disman/event/mteEvent.h" #include "disman/event/mteEventTable.h" netsnmp_feature_require(iquery); netsnmp_feature_require(table_tdata); #ifndef NETSNMP_NO_WRITE_SUPPORT netsnmp_feature_require(iquery_pdu_session); netsnmp_feature_require(check_vb_type_and_max_size); netsnmp_feature_require(mteevent_removeentry); netsnmp_feature_require(check_vb_truthvalue); netsnmp_feature_require(table_tdata_insert_row); #endif /* NETSNMP_NO_WRITE_SUPPORT */ static netsnmp_table_registration_info *table_info; /* Initializes the mteEventTable module */ void init_mteEventTable(void) { static oid mteEventTable_oid[] = { 1, 3, 6, 1, 2, 1, 88, 1, 4, 2 }; size_t mteEventTable_oid_len = OID_LENGTH(mteEventTable_oid); netsnmp_handler_registration *reg; /* * Ensure the (combined) table container is available... */ init_event_table_data(); /* * ... then set up the MIB interface to the mteEventTable slice */ #ifndef NETSNMP_NO_WRITE_SUPPORT reg = netsnmp_create_handler_registration("mteEventTable", mteEventTable_handler, mteEventTable_oid, mteEventTable_oid_len, HANDLER_CAN_RWRITE); #else /* !NETSNMP_NO_WRITE_SUPPORT */ reg = netsnmp_create_handler_registration("mteEventTable", mteEventTable_handler, mteEventTable_oid, mteEventTable_oid_len, HANDLER_CAN_RONLY); #endif /* !NETSNMP_NO_WRITE_SUPPORT */ table_info = SNMP_MALLOC_TYPEDEF(netsnmp_table_registration_info); netsnmp_table_helper_add_indexes(table_info, ASN_OCTET_STR, /* index: mteOwner */ /* index: mteEventName */ ASN_PRIV_IMPLIED_OCTET_STR, 0); table_info->min_column = COLUMN_MTEEVENTCOMMENT; table_info->max_column = COLUMN_MTEEVENTENTRYSTATUS; /* Register this using the (common) event_table_data container */ netsnmp_tdata_register(reg, event_table_data, table_info); DEBUGMSGTL(("disman:event:init", "Event Table container (%p)\n", event_table_data)); } void shutdown_mteEventTable(void) { if (table_info) { netsnmp_table_registration_info_free(table_info); table_info = NULL; } } /** 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; }