diff options
Diffstat (limited to 'scripts/external_libs/dpkt-1.8.6/dpkt/stun.py')
| -rw-r--r-- | scripts/external_libs/dpkt-1.8.6/dpkt/stun.py | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/scripts/external_libs/dpkt-1.8.6/dpkt/stun.py b/scripts/external_libs/dpkt-1.8.6/dpkt/stun.py new file mode 100644 index 00000000..5706f0ef --- /dev/null +++ b/scripts/external_libs/dpkt-1.8.6/dpkt/stun.py @@ -0,0 +1,45 @@ +# $Id: stun.py 47 2008-05-27 02:10:00Z jon.oberheide $ + +"""Simple Traversal of UDP through NAT.""" + +import struct +import dpkt + +# STUN - RFC 3489 +# http://tools.ietf.org/html/rfc3489 +# Each packet has a 20 byte header followed by 0 or more attribute TLVs. + +# Message Types +BINDING_REQUEST = 0x0001 +BINDING_RESPONSE = 0x0101 +BINDING_ERROR_RESPONSE = 0x0111 +SHARED_SECRET_REQUEST = 0x0002 +SHARED_SECRET_RESPONSE = 0x0102 +SHARED_SECRET_ERROR_RESPONSE = 0x0112 + +# Message Attributes +MAPPED_ADDRESS = 0x0001 +RESPONSE_ADDRESS = 0x0002 +CHANGE_REQUEST = 0x0003 +SOURCE_ADDRESS = 0x0004 +CHANGED_ADDRESS = 0x0005 +USERNAME = 0x0006 +PASSWORD = 0x0007 +MESSAGE_INTEGRITY = 0x0008 +ERROR_CODE = 0x0009 +UNKNOWN_ATTRIBUTES = 0x000a +REFLECTED_FROM = 0x000b + +class STUN(dpkt.Packet): + __hdr__ = ( + ('type', 'H', 0), + ('len', 'H', 0), + ('xid', '16s', 0) + ) + +def tlv(buf): + n = 4 + t, l = struct.unpack('>HH', buf[:n]) + v = buf[n:n+l] + buf = buf[n+l:] + return (t,l,v, buf) |