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SNMP GetRequest parsing

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blackhedd 2006-12-15 11:22:41 +00:00
parent 79e59cf3aa
commit c49e1f0c94
2 changed files with 76 additions and 2 deletions
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26
tests/testsnmp.rb
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@ -11,7 +11,7 @@ require 'stringio'
class TestSnmp < Test::Unit::TestCase
SnmpRequest = "0'\002\001\000\004\006public\240\032\002\002?*\002\001\000\002\001\0000\0160\f\006\b+\006\001\002\001\001\001\000\005\000"
SnmpGetRequest = "0'\002\001\000\004\006public\240\032\002\002?*\002\001\000\002\001\0000\0160\f\006\b+\006\001\002\001\001\001\000\005\000"
def setup
end
@ -27,18 +27,40 @@ class TestSnmp < Test::Unit::TestCase
end
# The method String#read_ber! added by Net::BER consumes a well-formed BER object
# from the head of a string. If it doesn't find a complete, well-formed BER object,
# it returns nil and leaves the string unchanged. If it finds an object, it returns
# the object and removes it from the head of the string. This is good for handling
# partially-received data streams, such as from network connections.
def test_consume_string
data = "xxx"
assert_equal( nil, data.read_ber! )
assert_equal( "xxx", data )
data = SnmpRequest + "!!!"
data = SnmpGetRequest + "!!!"
ary = data.read_ber!( Net::SNMP::AsnSyntax )
assert_equal( "!!!", data )
assert ary.is_a?(Array)
assert ary.is_a?(Net::BER::BerIdentifiedArray)
end
def test_weird_packet
assert_raise( Net::SnmpPdu::Error ) {
Net::SnmpPdu.new("aaaaaaaaaaaaaa")
}
end
def test_packet
data = SnmpGetRequest.dup
pkt = data.read_ber(Net::SNMP::AsnSyntax)
assert pkt.is_a?(Net::BER::BerIdentifiedArray)
assert_equal( 48, pkt.ber_identifier) # Constructed [0], signifies GetRequest
pdu = Net::SnmpPdu.new(pkt)
assert_equal(:get_request, pdu.pdu_type )
assert_equal(16170, pdu.request_id ) # whatever was in the test data. 16170 is not magic.
assert_equal( [[1,3,6,1,2,1,1,1,0]], pdu.variables )
end
end