1

"""

     2

    Trap handling

     3

"""

     4

     5

TRAP_TYPE = {

     6

    # Link Down

     7

    2: 'IF-MIB::linkDown',

     8

     9

    # Link Up

    10

    3: 'IF-MIB::linkUp',

    11

}

    12

    13

# use subtype

    14

TRAP_TYPE_ENTERPRISE = 6

    15

    16

VALUE_TYPE = {

    17

    18

}

    19

    20

def parse_snmptrapd_log (line):

    21

    """

    22

        Parse a line of data logged by snmptrapd using the following formats:

    23

    24

            format1     %B %N %w %q %W\t%v\n

    25

            format2     %B\t%v\n

    26

    """

    27

    28

    values = { }

    29

    30

    items = line.split('\t')

    31

    32

    header = items.pop(0)

    33

    34

    if ' ' in header:

    35

        # XXX: some kind of compat wrapping of SNMPv1 TRAPs to fit the SNMPv2-TRAP model

    36

        host, enterprise, trap_type, trap_subtype, trap_descr = header.split(' ', 4)

    37

    38

        trap_type = int(trap_type)

    39

    40

        values['SNMPv2-MIB::snmpTrapEnterprise.0'] = enterprise

    41

    42

        if trap_type == TRAP_TYPE_ENTERPRISE:

    43

            # XXX: no idea why

    44

            if trap_subtype.startswith('.'):

    45

                trap_oid = enterprise + '.0' + trap_subtype

    46

            else:

    47

                trap_oid = trap_subtype

    48

        else:

    49

            trap_oid = TRAP_TYPE.get(trap_type, trap_type)

    50

    51

        values['SNMPv2-MIB::snmpTrapOID.0'] = trap_oid

    52

    else:

    53

        host = header

    54

    55

    for item in items:

    56

        key, value = item.split(' = ', 1)

    57

        value_type, value = value.split(': ', 1)

    58

    59

        func = VALUE_TYPE.get(value_type)

    60

    61

        if func:

    62

            value = func(value)

    63

    64

        values[key] = value

    65

    66

    return host, values