SNMPTrapMgr Class

Properties   Methods   Events   Configuration Settings   Errors  

The SNMPTrapMgr class provides a UDP-based listening point for SNMP traps.

Class Name

IPWorksSNMP_SNMPTrapMgr

Procedural Interface

 ipworkssnmp_snmptrapmgr_open();
 ipworkssnmp_snmptrapmgr_close($res);
 ipworkssnmp_snmptrapmgr_register_callback($res, $id, $function);
 ipworkssnmp_snmptrapmgr_get_last_error($res);
 ipworkssnmp_snmptrapmgr_get_last_error_code($res);
 ipworkssnmp_snmptrapmgr_set($res, $id, $index, $value);
 ipworkssnmp_snmptrapmgr_get($res, $id, $index);
 ipworkssnmp_snmptrapmgr_do_addengine($res, $engineid, $engineboots, $enginetime);
 ipworkssnmp_snmptrapmgr_do_adduser($res, $user, $engineid, $authenticationprotocol, $authenticationpassword, $encryptionalgorithm, $encryptionpassword);
 ipworkssnmp_snmptrapmgr_do_clearcache($res);
 ipworkssnmp_snmptrapmgr_do_config($res, $configurationstring);
 ipworkssnmp_snmptrapmgr_do_doevents($res);
 ipworkssnmp_snmptrapmgr_do_hashpasswords($res);
 ipworkssnmp_snmptrapmgr_do_removeengine($res, $engineid);
 ipworkssnmp_snmptrapmgr_do_removeuser($res, $user, $engineid);
 ipworkssnmp_snmptrapmgr_do_reset($res);
 ipworkssnmp_snmptrapmgr_do_showcache($res);
 ipworkssnmp_snmptrapmgr_do_value($res, $oid);

Remarks

The SNMPTrapMgr class provides a UDP-based listening point for SNMP traps and informs as specified by the SNMP RFCs. The class supports v1, v2c, and v3 traps.

The class provides both encoding/decoding and transport capabilities, making the task of developing a custom SNMP Trap manager as simple as setting a few key properties and handling a few events. SNMP data, such as for instance SNMP object id-s (OID-s) are exchanged as text strings, thus further simplifying the task of handling them.

The class is activated/deactivated by setting the Active property. This property enables or disables sending and receiving.

Messages are received through events such as Trap, InformRequest, or DiscoveryRequest.

SNMP OIDs, types, and values are provided in the Objects collection of SNMP objects for both sent and received packets.

SNMPv3 USM security passwords are requested through the GetUserPassword event, and event parameters such as User and SecurityLevel provide information about the security attributes of received requests, and enable granular decision capability about what to provide and what not to provide.

The AddUser, RemoveUser, ShowCache, ClearCache, AddEngine, and RemoveEngine methods are used to manage an internal authentication cache. This internal cache can be used as an alternative to the GetUserPassword event, automatically checking the cache against the security parameters provided in the request signature.

Property List


The following is the full list of the properties of the class with short descriptions. Click on the links for further details.

AcceptDataEnables or disables data reception.
ActiveEnables or disables sending and receiving of SNMP packets.
LocalEngineIdThe Engine Id (for SNMPv3).
LocalHostThe name of the local host or user-assigned IP interface through which connections are initiated or accepted.
LocalPortThe port in the local host where the class is bound to.
ObjCountThe number of records in the Obj arrays.
ObjTypeThe current object's type.
ObjIdThe current object's id which is encoded as a string of numbers separated by periods.
ObjTypeStringA string representation of the current object's ObjectType .
ObjValueThe current object's value.
RequestIdThe request-id to mark outgoing packets with.

Method List


The following is the full list of the methods of the class with short descriptions. Click on the links for further details.

AddEngineAdds the engine specified by EngineId to the internal authentication cache.
AddUserAdds a user for the engine specified by EngineId to the internal authentication cache.
ClearCacheClears the internal authentication database.
ConfigSets or retrieves a configuration setting.
DoEventsProcesses events from the internal message queue.
HashPasswordsHashes all passwords in the cache.
RemoveEngineRemoves the engine specified by EngineId from the internal authentication cache.
RemoveUserRemoves the user specified by User of the engine specified by EngineId from the internal authentication cache.
ResetClears the object arrays.
ShowCacheLists all entries in the internal user and engine database.
ValueReturns the value corresponding to an OID.

Event List


The following is the full list of the events fired by the class with short descriptions. Click on the links for further details.

BadPacketFired for erroneous and/or malformed messages.
CacheEntryShows engines and users in the internal cache.
CheckEngineFired to check engine parameters (timeliness, etc.).
DiscoveryRequestFired when an SNMPv3 discovery packet is received.
ErrorInformation about errors during data delivery.
GetUserPasswordRetrieves a password associated with a user.
GetUserSecurityLevelSets the security level for an incoming packet.
HashPasswordFired before and after a password is hashed.
InformRequestFired when an InformRequest packet is received.
PacketTraceFired for every packet sent or received.
TrapFired when a SNMP trap packet is received.

Configuration Settings


The following is a list of configuration settings for the class with short descriptions. Click on the links for further details.

AuthenticationKeyThe key to use for authentication.
CompatibilityModeWhether to operate the class in a specific compatibility mode.
ContextEngineIdSets the context engine id of the SNMP entity.
ContextNameSets the context name of the SNMP entity.
EncryptionKeyThe key to use for encryption.
ForceLocalPortForces the class to bind to a specific port.
ShowCacheForUserShows the cache entry for a single user.
SourceAddressThe source address of the received packet.
SourcePortThe source port of the received packet.
TimeWindowThe time window used for SNMPv3 timeliness checking (authentication).
CaptureIPPacketInfoUsed to capture the packet information.
DestinationAddressUsed to get the destination address from the packet information.
DontFragmentUsed to set the Don't Fragment flag of outgoing packets.
LocalHostThe name of the local host through which connections are initiated or accepted.
LocalPortThe port in the local host where the class binds.
MaxPacketSizeThe maximum length of the packets that can be received.
QOSDSCPValueUsed to specify an arbitrary QOS/DSCP setting (optional).
QOSTrafficTypeUsed to specify QOS/DSCP settings (optional).
ShareLocalPortIf set to True, allows more than one instance of the class to be active on the same local port.
SourceIPAddressUsed to set the source IP address used when sending a packet.
SourceMacAddressUsed to set the source MAC address used when sending a packet.
UseConnectionDetermines whether to use a connected socket.
UseIPv6Whether or not to use IPv6.
AbsoluteTimeoutDetermines whether timeouts are inactivity timeouts or absolute timeouts.
FirewallDataUsed to send extra data to the firewall.
InBufferSizeThe size in bytes of the incoming queue of the socket.
OutBufferSizeThe size in bytes of the outgoing queue of the socket.
BuildInfoInformation about the product's build.
CodePageThe system code page used for Unicode to Multibyte translations.
LicenseInfoInformation about the current license.
ProcessIdleEventsWhether the class uses its internal event loop to process events when the main thread is idle.
SelectWaitMillisThe length of time in milliseconds the class will wait when DoEvents is called if there are no events to process.
UseInternalSecurityAPITells the class whether or not to use the system security libraries or an internal implementation.

Copyright (c) 2021 /n software inc. - All rights reserved.
IPWorks SNMP 2020 PHP Edition - Version 20.0 [Build 7941]