1snmp_pdus(3)               Erlang Module Definition               snmp_pdus(3)
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NAME

6       snmp_pdus - Encode and Decode Functions for SNMP PDUs
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DESCRIPTION

9       RFC1157,  RFC1905 and/or RFC2272 should be studied carefully before us‐
10       ing this module, snmp_pdus.
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12       The module snmp_pdus contains functions for encoding  and  decoding  of
13       SNMP  protocol data units (PDUs). In short, this module converts a list
14       of bytes to Erlang record representations and vice  versa.  The  record
15       definitions  can  be  found in the file snmp/include/snmp_types.hrl. If
16       snmpv3 is used, the module that includes snmp_types.hrl must define the
17       constant SNMP_USE_V3 before the header file is included. Example:
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19       -define(SNMP_USE_V3, true).
20       -include_lib("snmp/include/snmp_types.hrl").
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22       Encoding and decoding must be done explicitly when writing your own Net
23       if process.
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EXPORTS

26       dec_message([byte()]) -> Message
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28              Types:
29
30                 Message = #message
31
32              Decodes a list of bytes into an SNMP Message. Note, if there  is
33              a  v3  message,  the msgSecurityParameters are not decoded. They
34              must be explicitly decoded by a call to a  security  model  spe‐
35              cific  decoding  function,  e.g.  dec_usm_security_parameters/1.
36              Also note, if the scopedPDU is encrypted, the OCTET  STRING  en‐
37              coded encryptedPDU will be present in the data field.
38
39       dec_message_only([byte()]) -> Message
40
41              Types:
42
43                 Message = #message
44
45              Decodes  a  list of bytes into an SNMP Message, but does not de‐
46              code the data part of the Message. That means, data is  still  a
47              list of bytes, normally an encoded PDU (v1 and V2) or an encoded
48              and possibly encrypted scopedPDU (v3).
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50       dec_pdu([byte()]) -> Pdu
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52              Types:
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54                 Pdu = #pdu
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56              Decodes a list of bytes into an SNMP Pdu.
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58       dec_scoped_pdu([byte()]) -> ScopedPdu
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60              Types:
61
62                 ScopedPdu = #scoped_pdu
63
64              Decodes a list of bytes into an SNMP ScopedPdu.
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66       dec_scoped_pdu_data([byte()]) -> ScopedPduData
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68              Types:
69
70                 ScopedPduData = #scoped_pdu | EncryptedPDU
71                 EncryptedPDU = [byte()]
72
73              Decodes a list of bytes into either a scoped pdu record, or - if
74              the scoped pdu was encrypted - to a list of bytes.
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76       dec_usm_security_parameters([byte()]) -> UsmSecParams
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78              Types:
79
80                 UsmSecParams = #usmSecurityParameters
81
82              Decodes a list of bytes into an SNMP UsmSecurityParameters
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84       enc_message(Message) -> [byte()]
85
86              Types:
87
88                 Message = #message
89
90              Encodes a message record to a list of bytes.
91
92       enc_message_only(Message) -> [byte()]
93
94              Types:
95
96                 Message = #message
97
98              Message  is  a  record where the data field is assumed to be en‐
99              coded (a list of bytes). If there is a v1  or  v2  message,  the
100              data field is an encoded PDU, and if there is a v3 message, data
101              is an encoded and possibly encrypted scopedPDU.
102
103       enc_pdu(Pd) -> [byte()]
104
105              Types:
106
107                 Pdu = #pdu
108
109              Encodes an SNMP Pdu into a list of bytes.
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111       enc_scoped_pdu(ScopedPdu) -> [byte()]
112
113              Types:
114
115                 ScopedPdu = #scoped_pdu
116
117              Encodes an SNMP ScopedPdu into a list of bytes, which can be en‐
118              crypted,  and  after  encryption, encoded with a call to enc_en‐
119              crypted_scoped_pdu/1; or it can be used as the data field  in  a
120              message   record,  which  then  can  be  encoded  with  enc_mes‐
121              sage_only/1.
122
123       enc_usm_security_parameters(UsmSecParams) -> [byte()]
124
125              Types:
126
127                 UsmSecParams = #usmSecurityParameters
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129              Encodes SNMP UsmSecurityParameters into a list of bytes.
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133Ericsson AB                       snmp 5.13.3                     snmp_pdus(3)