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Linux 2.6 - man page for snmp_pdus (linux section 3erl)

snmp_pdus(3erl) 					     Erlang Module Definition						   snmp_pdus(3erl)

NAME
snmp_pdus - Encode and Decode Functions for SNMP PDUs
DESCRIPTION
RFC1157, RFC1905 and/or RFC2272 should be studied carefully before using this module, snmp_pdus . The module snmp_pdus contains functions for encoding and decoding of SNMP protocol data units (PDUs). In short, this module converts a list of bytes to Erlang record representations and vice versa. The record definitions can be found in the file snmp/include/snmp_types.hrl . If snmpv3 is used, the module that includes snmp_types.hrl must define the constant SNMP_USE_V3 before the header file is included. Example: -define(SNMP_USE_V3, true). -include_lib("snmp/include/snmp_types.hrl"). Encoding and decoding must be done explicitly when writing your own Net if process.
EXPORTS
dec_message([byte()]) -> Message Types Message = #message Decodes a list of bytes into an SNMP Message. Note, if there is a v3 message, the msgSecurityParameters are not decoded. They must be explicitly decoded by a call to a security model specific decoding function, e.g. dec_usm_security_parameters/1 . Also note, if the scopedPDU is encrypted, the OCTET STRING encoded encryptedPDU will be present in the data field. dec_message_only([byte()]) -> Message Types Message = #message Decodes a list of bytes into an SNMP Message, but does not decode the data part of the Message. That means, data is still a list of bytes, normally an encoded PDU (v1 and V2) or an encoded and possibly encrypted scopedPDU (v3). dec_pdu([byte()]) -> Pdu Types Pdu = #pdu Decodes a list of bytes into an SNMP Pdu. dec_scoped_pdu([byte()]) -> ScopedPdu Types ScopedPdu = #scoped_pdu Decodes a list of bytes into an SNMP ScopedPdu. dec_scoped_pdu_data([byte()]) -> ScopedPduData Types ScopedPduData = #scoped_pdu | EncryptedPDU EncryptedPDU = [byte()] Decodes a list of bytes into either a scoped pdu record, or - if the scoped pdu was encrypted - to a list of bytes. dec_usm_security_parameters([byte()]) -> UsmSecParams Types UsmSecParams = #usmSecurityParameters Decodes a list of bytes into an SNMP UsmSecurityParameters enc_encrypted_scoped_pdu(EncryptedScopedPdu) -> [byte()] Types EncryptedScopedPdu = [byte()] Encodes an encrypted SNMP ScopedPdu into an OCTET STRING that can be used as the data field in a message record, that later can be encoded with a call to enc_message_only/1 . This function should be used whenever the ScopedPDU is encrypted. enc_message(Message) -> [byte()] Types Message = #message Encodes a message record to a list of bytes. enc_message_only(Message) -> [byte()] Types Message = #message Message is a record where the data field is assumed to be encoded (a list of bytes). If there is a v1 or v2 message, the data field is an encoded PDU , and if there is a v3 message, data is an encoded and possibly encrypted scopedPDU . enc_pdu(Pd) -> [byte()] Types Pdu = #pdu Encodes an SNMP Pdu into a list of bytes. enc_scoped_pdu(ScopedPdu) -> [byte()] Types ScopedPdu = #scoped_pdu Encodes an SNMP ScopedPdu into a list of bytes, which can be encrypted, and after encryption, encoded with a call to enc_encrypted_scoped_pdu/1 ; or it can be used as the data field in a message record, which then can be encoded with enc_mes- sage_only/1 . enc_usm_security_parameters(UsmSecParams) -> [byte()] Types UsmSecParams = #usmSecurityParameters Encodes SNMP UsmSecurityParameters into a list of bytes. Ericsson AB snmp 4.19 snmp_pdus(3erl)

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