dnsopcode.py

# Opcode values in message header (section 4.1.1)

QUERY = 0
IQUERY = 1
STATUS = 2

# Construct reverse mapping dictionary

_names = dir()
opcodemap = {}
for _name in _names:
	if _name[0] != '_': opcodemap[eval(_name)] = _name

def opcodestr(opcode):
	if opcodemap.has_key(opcode): return opcodemap[opcode]
	else: return `opcode`