diff options
Diffstat (limited to 'agent/mibgroup/disman/event/mteTriggerDeltaTable.c')
| -rw-r--r-- | agent/mibgroup/disman/event/mteTriggerDeltaTable.c | 273 |
1 files changed, 273 insertions, 0 deletions
diff --git a/agent/mibgroup/disman/event/mteTriggerDeltaTable.c b/agent/mibgroup/disman/event/mteTriggerDeltaTable.c new file mode 100644 index 0000000..c2c2e8e --- /dev/null +++ b/agent/mibgroup/disman/event/mteTriggerDeltaTable.c @@ -0,0 +1,273 @@ +/* + * DisMan Event MIB: + * Implementation of the mteTriggerDeltaTable MIB interface + * See 'mteTrigger.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-features.h> +#include <net-snmp/net-snmp-includes.h> +#include <net-snmp/agent/net-snmp-agent-includes.h> +#include "disman/event/mteTrigger.h" +#include "disman/event/mteTriggerDeltaTable.h" + +netsnmp_feature_require(table_tdata) +#ifndef NETSNMP_NO_WRITE_SUPPORT +netsnmp_feature_require(check_vb_oid) +netsnmp_feature_require(check_vb_truthvalue) +#endif /* NETSNMP_NO_WRITE_SUPPORT */ + +/** Initializes the mteTriggerDeltaTable module */ +void +init_mteTriggerDeltaTable(void) +{ + static oid mteTDeltaTable_oid[] = { 1, 3, 6, 1, 2, 1, 88, 1, 2, 3 }; + size_t mteTDeltaTable_oid_len = OID_LENGTH(mteTDeltaTable_oid); + netsnmp_handler_registration *reg; + netsnmp_table_registration_info *table_info; + int rc; + + /* + * Ensure the (combined) table container is available... + */ + init_trigger_table_data(); + + /* + * ... then set up the MIB interface to the mteTriggerDeltaTable slice + */ +#ifndef NETSNMP_NO_WRITE_SUPPORT + reg = netsnmp_create_handler_registration("mteTriggerDeltaTable", + mteTriggerDeltaTable_handler, + mteTDeltaTable_oid, + mteTDeltaTable_oid_len, + HANDLER_CAN_RWRITE); +#else /* !NETSNMP_NO_WRITE_SUPPORT */ + reg = netsnmp_create_handler_registration("mteTriggerDeltaTable", + mteTriggerDeltaTable_handler, + mteTDeltaTable_oid, + mteTDeltaTable_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: mteTriggerName */ + ASN_PRIV_IMPLIED_OCTET_STR, + 0); + + table_info->min_column = COLUMN_MTETRIGGERDELTADISCONTINUITYID; + table_info->max_column = COLUMN_MTETRIGGERDELTADISCONTINUITYIDTYPE; + + /* Register this using the (common) trigger_table_data container */ + rc = netsnmp_tdata_register(reg, trigger_table_data, table_info); + if (rc != SNMPERR_SUCCESS) + return; + netsnmp_handler_owns_table_info(reg->handler->next); + DEBUGMSGTL(("disman:event:init", "Trigger Delta Table\n")); +} + + +/** handles requests for the mteTriggerDeltaTable table */ +int +mteTriggerDeltaTable_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; + struct mteTrigger *entry; + int ret; + + DEBUGMSGTL(("disman:event:mib", "Delta 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 mteTrigger *) netsnmp_tdata_extract_entry(request); + tinfo = netsnmp_extract_table_info(request); + + /* + * The mteTriggerBooleanTable should only contains entries for + * rows where the mteTriggerSampleType is 'deltaValue(2)' + * So skip entries where this isn't the case. + */ + if (!entry || !(entry->flags & MTE_TRIGGER_FLAG_DELTA )) { + netsnmp_request_set_error(request, SNMP_NOSUCHINSTANCE); + continue; + } + + switch (tinfo->colnum) { + case COLUMN_MTETRIGGERDELTADISCONTINUITYID: + snmp_set_var_typed_value(request->requestvb, ASN_OBJECT_ID, + (u_char *) entry->mteDeltaDiscontID, + entry->mteDeltaDiscontID_len*sizeof(oid)); + break; + case COLUMN_MTETRIGGERDELTADISCONTINUITYIDWILDCARD: + ret = (entry->flags & MTE_TRIGGER_FLAG_DWILD ) ? + TV_TRUE : TV_FALSE; + snmp_set_var_typed_integer(request->requestvb, ASN_INTEGER, ret); + break; + case COLUMN_MTETRIGGERDELTADISCONTINUITYIDTYPE: + snmp_set_var_typed_integer(request->requestvb, ASN_INTEGER, + entry->mteDeltaDiscontIDType); + 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 mteTrigger *) netsnmp_tdata_extract_entry(request); + tinfo = netsnmp_extract_table_info(request); + + /* + * Since the mteTriggerDeltaTable only contains entries for + * rows where mteTriggerSampleType is 'deltaValue(2)', + * strictly speaking we should reject assignments where + * this isn't the case. + * But SET requests that include an assignment of + * 'deltaValue(2)' at the same time are valid, so would + * need to be accepted. Unfortunately, this assignment + * is only applied in the COMMIT pass, so it's difficult + * to detect whether this holds or not. + * + * Let's fudge things for now, by processing + * assignments even if this value isn't set. + */ + switch (tinfo->colnum) { + case COLUMN_MTETRIGGERDELTADISCONTINUITYID: + 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_MTETRIGGERDELTADISCONTINUITYIDWILDCARD: + 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_MTETRIGGERDELTADISCONTINUITYIDTYPE: + ret = netsnmp_check_vb_int_range(request->requestvb, + MTE_DELTAD_TTICKS, + MTE_DELTAD_DATETIME); + 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; + } + + /* + * The Event MIB is somewhat ambiguous as to whether the + * various trigger table entries can be modified once the + * main mteTriggerTable entry has been marked 'active'. + * But it's clear from discussion on the DisMan mailing + * list is that the intention is not. + * + * So check for whether this row is already active, + * and reject *all* SET requests if it is. + */ + entry = (struct mteTrigger *) netsnmp_tdata_extract_entry(request); + if (entry && + entry->flags & MTE_TRIGGER_FLAG_ACTIVE ) { + netsnmp_set_request_error(reqinfo, request, + SNMP_ERR_INCONSISTENTVALUE); + return SNMP_ERR_NOERROR; + } + } + break; + + case MODE_SET_RESERVE2: + case MODE_SET_FREE: + case MODE_SET_UNDO: + break; + + case MODE_SET_ACTION: + for (request = requests; request; request = request->next) { + if (request->processed) + continue; + + entry = (struct mteTrigger *) netsnmp_tdata_extract_entry(request); + if (!entry) { + /* + * New rows must be created via the RowStatus column + * (in the main mteTriggerTable) + */ + netsnmp_set_request_error(reqinfo, request, + SNMP_ERR_NOCREATION); + /* or inconsistentName? */ + return SNMP_ERR_NOERROR; + } + } + 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 mteTrigger *) netsnmp_tdata_extract_entry(request); + tinfo = netsnmp_extract_table_info(request); + + switch (tinfo->colnum) { + case COLUMN_MTETRIGGERDELTADISCONTINUITYID: + if ( snmp_oid_compare( + request->requestvb->val.objid, + request->requestvb->val_len/sizeof(oid), + _sysUpTime_instance, _sysUpTime_inst_len) != 0 ) { + memset(entry->mteDeltaDiscontID, 0, + sizeof(entry->mteDeltaDiscontID)); + memcpy(entry->mteDeltaDiscontID, + request->requestvb->val.string, + request->requestvb->val_len); + entry->mteDeltaDiscontID_len = + request->requestvb->val_len/sizeof(oid); + entry->flags &= ~MTE_TRIGGER_FLAG_SYSUPT; + } + break; + case COLUMN_MTETRIGGERDELTADISCONTINUITYIDWILDCARD: + if (*request->requestvb->val.integer == TV_TRUE) + entry->flags |= MTE_TRIGGER_FLAG_DWILD; + else + entry->flags &= ~MTE_TRIGGER_FLAG_DWILD; + break; + case COLUMN_MTETRIGGERDELTADISCONTINUITYIDTYPE: + entry->mteDeltaDiscontIDType = *request->requestvb->val.integer; + break; + } + } + break; +#endif /* !NETSNMP_NO_WRITE_SUPPORT */ + } + return SNMP_ERR_NOERROR; +} |