#!/apps/rebol/rebol -qw
REBOL [
Title: "SNMP v1 Trap model"
Date: 30-Oct-2000
Author: "Phil Hayes"
Version: 0.1
Owner: "The Cnut Archetype Ltd - www.cnut.dircon.co.uk"
Rights: "Copyright (C) The Cnut Archetype Ltd 2000"
Purpose: {
This script allows SNMP v1 MIB II traps to be built using
a simple data model.
}
Comment: {
N.B. This version does not allow variable bindings to be issued.
Version 0.2 will allow variable bindings to be sent with enterprise specific
traps.
}
History: [
0.1 [ 30-Oct-2000 "First Draft" "PH" ]
]
Language: 'English
]
; Constants
trapV1-pdu: #{a4}
int-type: #{02}
octet-type: #{04}
objid-type: #{06}
header-type: #{30}
ipaddr-type: #{40}
timeticks-type: #{43}
coldStart: 0
warmStart: 1
linkDown: 2
linkUp: 3
authFailure: 4
egpNeighborLoss: 5
enterpriseSpecific: 6
; Protocal Data Unit ( PDU ) var
pdu-var: make object! [
pv-type: none
pv-length: none
pv-value: none
func1: func [ n [ integer! ] /local r i ] [
r: copy #{}
i: to-integer ( n / 128 )
if ( i < 128 ) [
i: i + 128
]
insert r to-binary to-block i
i: to-integer ( n // 128 )
append r ( to-binary to-block i )
return r
]
SetValue: func [ val /local v1 i ] [
switch/default type?/word val [
integer! [
pv-type: int-type
pv-value: make binary! to-block val
]
string! [
pv-type: octet-type
pv-value: make binary! val
]
tuple! [
pv-type: ipaddr-type
v1: to-string val
replace/all v1 "." " "
pv-value: to-binary to-block v1
]
issue! [
pv-type: objid-type
replace/all val "." " "
pv-value: copy #{2b06010401}
foreach v1 to-block val [
i: to-integer v1
either i > 127 [
append pv-value ( func1 i )
] [
append pv-value to-binary to-block i
]
]
]
] [
pv-type: #{00}
pv-value: #{00}
]
pv-length: make binary! to-block length? pv-value
; print [ "pdu-var data [" self/GetData "]" ]
; print [ "pdu-var length [" self/GetLength "]" ]
]
GetData: func [ /local v1 ] [
v1: make binary! []
append v1 pv-type
append v1 pv-length
append v1 pv-value
return v1
]
GetLength: func [] [
return length? self/GetData
]
]
size-var: make object! [
type: #{82}
filler: #{00}
length: none
SetLength: func [ len [integer!] ] [
length: make binary! to-block len
; print [ "size-var data [" self/GetData "]" ]
; print [ "size-var length [" self/GetLength "]" ]
]
GetData: func [ /local v1 ] [
v1: make binary! []
append v1 type
append v1 filler
append v1 length
return v1
]
GetLength: func [] [
return to-integer length
]
]
var-bind: make object! [
vb-header: header-type
vb-size: make size-var []
GetData: func [ /local v1 ] [
v1: make binary! []
append v1 vb-header
append v1 vb-size/GetData
return v1
]
]
trap-pdu: make object! [
pdu-type: trapV1-pdu
size: make size-var []
enterprise: make pdu-var []
agent-addr: make pdu-var []
generic-trap: make pdu-var []
specific-trap: make pdu-var []
timestamp: make pdu-var []
varbindings: make var-bind []
SetSize: func [] [
size/SetLength self/GetLength
]
GetLength: func [ /local v1 ] [
v1: copy #{}
append v1 enterprise/GetData
append v1 agent-addr/GetData
append v1 generic-trap/GetData
append v1 specific-trap/GetData
append v1 timestamp/GetData
append v1 varbindings/GetData
return length? v1
]
GetData: func [ /local v1 ] [
v1: copy #{}
append v1 pdu-type
append v1 size/GetData
append v1 enterprise/GetData
append v1 agent-addr/GetData
append v1 generic-trap/GetData
append v1 specific-trap/GetData
append v1 timestamp/GetData
append v1 varbindings/GetData
return v1
]
SetTimeTicks: func [ i [integer!] ] [
timestamp/pv-type: timeticks-type
timestamp/pv-value: make binary! to-block i
; timestamp/pv-value: #{092ac9bc}
timestamp/pv-length: make binary! to-block length? timestamp/pv-value
]
]
snmp-msg: make object! [
sm-header: header-type
sm-size: make size-var []
sm-version: make pdu-var []
sm-community: make pdu-var []
sm-pdu: make trap-pdu []
SetSize: func [] [
sm-size/SetLength self/GetLength
]
GetLength: func [ /local i ] [
i: sm-version/GetLength + sm-community/GetLength + length? sm-pdu/GetData
; print [ "snmp-msg length [" i "]" ]
return i
]
GetData: func [ /local v1 ] [
v1: copy #{}
append v1 sm-header
append v1 sm-size/GetData
append v1 sm-version/GetData
append v1 sm-community/GetData
append v1 sm-pdu/GetData
return v1
]
]
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