def setUp(self):
self.negotiated = {}
for asn4 in (True, False):
neighbor = FakeNeighbor()
neighbor.asn4 = asn4
capa = Capabilities().new(neighbor, False)
capa[Capability.CODE.MULTIPROTOCOL] = neighbor.families()
# path = {}
# for f in NLRI.known_families():
# if neighbor.add_path:
# path[f] = neighbor.add_path
# capa[Capability.CODE.ADD_PATH] = path
o1 = Open(Version(4), ASN(neighbor.local_as), HoldTime(180),
RouterID(neighbor.local_address.top()), capa)
o2 = Open(Version(4), ASN(neighbor.peer_as), HoldTime(180),
RouterID(neighbor.peer_address.top()), capa)
negotiated = Negotiated(neighbor)
negotiated.sent(o1)
negotiated.received(o2)
self.negotiated[asn4] = negotiated
def setUp(self):
self.negotiated = {}
for asn4 in (True, False):
neighbor = FakeNeighbor()
neighbor.asn4 = asn4
capa = Capabilities().new(neighbor, False)
capa[Capability.CODE.MULTIPROTOCOL] = neighbor.families()
# path = {}
# for f in NLRI.known_families():
# if neighbor.add_path:
# path[f] = neighbor.add_path
# capa[Capability.CODE.ADD_PATH] = path
routerid_1 = str(neighbor.router_id)
routerid_2 = '.'.join(
str((int(_) + 1) % 250)
for _ in str(neighbor.router_id).split('.', -1))
o1 = Open(Version(4), ASN(neighbor.local_as), HoldTime(180),
RouterID(routerid_1), capa)
o2 = Open(Version(4), ASN(neighbor.peer_as), HoldTime(180),
RouterID(routerid_2), capa)
negotiated = Negotiated(neighbor)
negotiated.sent(o1)
negotiated.received(o2)
self.negotiated[asn4] = negotiated
def _negotiated(neighbor):
path = {}
for f in NLRI.known_families():
if neighbor['capability']['add-path']:
path[f] = neighbor['capability']['add-path']
capa = Capabilities().new(neighbor, False)
capa[Capability.CODE.ADD_PATH] = path
capa[Capability.CODE.MULTIPROTOCOL] = neighbor.families()
# capa[Capability.CODE.FOUR_BYTES_ASN] = True
routerid_1 = str(neighbor['router-id'])
routerid_2 = '.'.join(
str((int(_) + 1) % 250)
for _ in str(neighbor['router-id']).split('.', -1))
o1 = Open(Version(4), ASN(neighbor['local-as']), HoldTime(180),
RouterID(routerid_1), capa)
o2 = Open(Version(4), ASN(neighbor['peer-as']), HoldTime(180),
RouterID(routerid_2), capa)
negotiated = Negotiated(neighbor)
negotiated.sent(o1)
negotiated.received(o2)
# grouped = False
return negotiated
def test_2_open(self):
capabilities = Capabilities()
o = Open(Version(4), ASN(65500), HoldTime(180), RouterID('127.0.0.1'), capabilities)
self.assertEqual(o.version, 4)
self.assertEqual(o.asn, 65500)
self.assertEqual(o.router_id, RouterID('127.0.0.1'))
self.assertEqual(o.hold_time, 180)
self.assertEqual(o.capabilities, {})
def test_2_open(self):
capabilities = Capabilities()
o = Open(4, 65500, '127.0.0.1', capabilities, 180)
self.assertEqual(o.version, 4)
self.assertEqual(o.asn, 65500)
self.assertEqual(o.router_id, RouterID('127.0.0.1'))
self.assertEqual(o.hold_time, 180)
self.assertEqual(o.capabilities, {})
def new_open(self, restarted):
sent_open = Open(Version(4), self.neighbor.local_as,
self.neighbor.hold_time, self.neighbor.router_id,
Capabilities().new(self.neighbor, restarted))
# we do not buffer open message in purpose
for _ in self.write(sent_open):
yield _NOP
self.logger.message(self.me('>> %s' % sent_open))
yield sent_open
def check_open(neighbor, raw):
import sys
import traceback
sys.excepthook = traceback.print_exception
try:
o = Open.unpack_message(raw, Direction.IN, _negotiated(neighbor))
print(o)
except Exception as exc:
print()
print("we could not decode this open message")
print("here is the traceback to help to figure out why")
print()
raise
def new_open(self):
if self.neighbor.local_as:
local_as = self.neighbor.local_as
elif self.negotiated.received_open:
local_as = self.negotiated.received_open.asn
else:
raise RuntimeError('no ASN available for the OPEN message')
sent_open = Open(
Version(4), local_as, self.neighbor.hold_time,
self.neighbor.router_id,
Capabilities().new(self.neighbor, self.peer._restarted))
# we do not buffer open message in purpose
for _ in self.write(sent_open):
yield _NOP
self.logger.debug('>> %s' % sent_open, self.connection.session())
yield sent_open
def check_generation(neighbors):
option.enabled['parser'] = True
for name in neighbors.keys():
neighbor = copy.deepcopy(neighbors[name])
neighbor['local-as'] = neighbor['peer-as']
path = {}
for f in NLRI.known_families():
if neighbor['capability']['add-path']:
path[f] = neighbor['capability']['add-path']
capa = Capabilities().new(neighbor, False)
if path:
capa[Capability.CODE.ADD_PATH] = path
capa[Capability.CODE.MULTIPROTOCOL] = neighbor.families()
routerid_1 = str(neighbor['router-id'])
routerid_2 = '.'.join(
str((int(_) + 1) % 250)
for _ in str(neighbor['router-id']).split('.', -1))
o1 = Open(Version(4), ASN(neighbor['local-as']), HoldTime(180),
RouterID(routerid_1), capa)
o2 = Open(Version(4), ASN(neighbor['peer-as']), HoldTime(180),
RouterID(routerid_2), capa)
negotiated = Negotiated(neighbor)
negotiated.sent(o1)
negotiated.received(o2)
# grouped = False
for _ in neighbor.rib.outgoing.updates(False):
pass
for change1 in neighbor.rib.outgoing.cached_changes():
str1 = change1.extensive()
packed = list(
Update([change1.nlri],
change1.attributes).messages(negotiated))
pack1 = packed[0]
log.debug('parsed route requires %d updates' % len(packed),
'parser')
log.debug('update size is %d' % len(pack1), 'parser')
log.debug('parsed route %s' % str1, 'parser')
log.debug('parsed hex %s' % od(pack1), 'parser')
# This does not take the BGP header - let's assume we will not break that :)
try:
log.debug('') # new line
pack1s = pack1[19:] if pack1.startswith(b'\xFF' *
16) else pack1
update = Update.unpack_message(pack1s, negotiated)
change2 = Change(update.nlris[0], update.attributes)
str2 = change2.extensive()
pack2 = list(
Update([update.nlris[0]],
update.attributes).messages(negotiated))[0]
log.debug('recoded route %s' % str2, 'parser')
log.debug('recoded hex %s' % od(pack2), 'parser')
str1 = str1.replace('attribute [ 0x04 0x80 0x00000064 ]',
'med 100')
str1r = (str1.lower().replace(' med 100', '').replace(
' local-preference 100', '').replace(' origin igp', ''))
str2r = (str2.lower().replace(' med 100', '').replace(
' local-preference 100', '').replace(' origin igp', ''))
str2r = str2r.replace(
'large-community [ 1:2:3 10:11:12 ]',
'attribute [ 0x20 0xc0 0x0000000100000002000000030000000a0000000b0000000c ]',
)
if 'next-hop self' in str1r:
if ':' in str1r:
str1r = str1r.replace('next-hop self', 'next-hop ::1')
else:
str1r = str1r.replace(
'next-hop self',
'next-hop %s' % neighbor['local-address'])
if ' name ' in str1r:
parts = str1r.split(' ')
pos = parts.index('name')
str1r = ' '.join(parts[:pos] + parts[pos + 2:])
skip = False
if str1r != str2r:
if 'attribute [' in str1r and ' 0x00 ' in str1r:
# we do not decode non-transitive attributes
log.debug(
'skipping string check on update with non-transitive attribute(s)',
'parser')
skip = True
else:
log.debug('strings are different:', 'parser')
log.debug('[%s]' % (str1r), 'parser')
log.debug('[%s]' % (str2r), 'parser')
return False
else:
log.debug('strings are fine', 'parser')
if skip:
log.debug(
'skipping encoding for update with non-transitive attribute(s)',
'parser')
elif pack1 != pack2:
log.debug('encoding are different', 'parser')
log.debug('[%s]' % (od(pack1)), 'parser')
log.debug('[%s]' % (od(pack2)), 'parser')
return False
else:
log.debug('encoding is fine', 'parser')
log.debug('----------------------------------------',
'parser')
log.debug('JSON nlri %s' % change1.nlri.json(), 'parser')
log.debug('JSON attr %s' % change1.attributes.json(), 'parser')
except Notify as exc:
log.debug('----------------------------------------', 'parser')
log.debug(str(exc), 'parser')
log.debug('----------------------------------------', 'parser')
return False
neighbor.rib.clear()
return True
def check_update(neighbor, raw):
option.enabled['parser'] = True
neighbor = neighbor[list(neighbor)[0]]
path = {}
for f in NLRI.known_families():
if neighbor['capability']['add-path']:
path[f] = neighbor['capability']['add-path']
capa = Capabilities().new(neighbor, False)
capa[Capability.CODE.ADD_PATH] = path
capa[Capability.CODE.MULTIPROTOCOL] = neighbor.families()
# capa[Capability.CODE.FOUR_BYTES_ASN] = True
routerid_1 = str(neighbor['router-id'])
routerid_2 = '.'.join(
str((int(_) + 1) % 250)
for _ in str(neighbor['router-id']).split('.', -1))
o1 = Open(Version(4), ASN(neighbor['local-as']), HoldTime(180),
RouterID(routerid_1), capa)
o2 = Open(Version(4), ASN(neighbor['peer-as']), HoldTime(180),
RouterID(routerid_2), capa)
negotiated = Negotiated(neighbor)
negotiated.sent(o1)
negotiated.received(o2)
# grouped = False
while raw:
if raw.startswith(b'\xff' * 16):
kind = raw[18]
size = (raw[16] << 16) + raw[17]
injected, raw = raw[19:size], raw[size:]
if kind == 2:
log.debug('the message is an update', 'parser')
decoding = 'update'
else:
log.debug(
'the message is not an update (%d) - aborting' % kind,
'parser')
return False
else:
log.debug('header missing, assuming this message is ONE update',
'parser')
decoding = 'update'
injected, raw = raw, ''
try:
# This does not take the BGP header - let's assume we will not break that :)
update = Update.unpack_message(injected, negotiated)
except Notify:
import traceback
log.error('could not parse the message', 'parser')
log.error(traceback.format_exc(), 'parser')
return False
except Exception:
import traceback
log.error('could not parse the message', 'parser')
log.error(traceback.format_exc(), 'parser')
return False
log.debug('', 'parser') # new line
for number in range(len(update.nlris)):
change = Change(update.nlris[number], update.attributes)
log.info(
'decoded %s %s %s' %
(decoding, change.nlri.action, change.extensive()), 'parser')
log.info(
'update json %s' % Response.JSON(json_version).update(
neighbor, 'in', update, None, '', ''), 'parser')
return True
def _from_json(self, string):
try:
parsed = json.loads(string)
except ValueError:
print >> sys.stderr, 'invalid JSON message'
sys.exit(1)
if parsed.get('exabgp', '0.0.0') != json_version:
print >> sys.stderr, 'invalid json version', string
sys.exit(1)
content = parsed.get('type', '')
if not content:
print >> sys.stderr, 'invalid json content', string
sys.exit(1)
neighbor = _FakeNeighbor(
parsed['neighbor']['address']['local'],
parsed['neighbor']['address']['peer'],
parsed['neighbor']['asn']['local'],
parsed['neighbor']['asn']['peer'],
)
if content == 'state':
self._state()
return string
direction = parsed['neighbor']['direction']
category = parsed['neighbor']['message']['category']
header = parsed['neighbor']['message']['header']
body = parsed['neighbor']['message']['body']
raw = ''.join(
chr(int(body[_:_ + 2], 16)) for _ in range(0, len(body), 2))
if content == 'open':
message = Open.unpack_message(raw)
self._open(direction, message)
return self.encoder.open(neighbor, direction, message, header,
body)
if content == 'keapalive':
return self.encoder.keepalive(neighbor, direction, header, body)
if content == 'notification':
message = Notification.unpack_message(raw)
return self.encoder.notification(neighbor, direction, message,
header, body)
if not self.negotiated:
print >> sys.stderr, 'invalid message sequence, open not exchange not complete', string
sys.exit(1)
message = Message.unpack(category, raw, self.negotiated)
if content == 'update':
return self.encoder.update(neighbor, direction, message, header,
body)
if content == 'eor': # XXX: Should not be required
return self.encoder.update(neighbor, direction, message, header,
body)
if content == 'refresh':
return self.json.refresh(neighbor, direction, message, header,
body)
if content == 'operational':
return self.json.refresh(neighbor, direction, message, header,
body)
raise RuntimeError(
'the programer is a monkey and forgot a JSON message type')
def check_update(neighbor, raw):
logger = Logger()
logger._option.parser = True
logger.parser('\ndecoding routes in configuration')
neighbor = neighbor[neighbor.keys()[0]]
path = {}
for f in NLRI.known_families():
if neighbor.add_path:
path[f] = neighbor.add_path
capa = Capabilities().new(neighbor, False)
capa[Capability.CODE.ADD_PATH] = path
capa[Capability.CODE.MULTIPROTOCOL] = neighbor.families()
# capa[Capability.CODE.FOUR_BYTES_ASN] = True
routerid_1 = str(neighbor.router_id)
routerid_2 = '.'.join(
str((int(_) + 1) % 250)
for _ in str(neighbor.router_id).split('.', -1))
o1 = Open(4, neighbor.local_as, routerid_1, capa, 180)
o2 = Open(4, neighbor.peer_as, routerid_2, capa, 180)
negotiated = Negotiated(neighbor)
negotiated.sent(o1)
negotiated.received(o2)
# grouped = False
while raw:
if raw.startswith('\xff' * 16):
kind = ord(raw[18])
size = (ord(raw[16]) << 16) + (ord(raw[17]))
injected, raw = raw[19:size], raw[size:]
if kind == 2:
logger.parser('the message is an update')
decoding = 'update'
else:
logger.parser('the message is not an update (%d) - aborting' %
kind)
return False
else:
logger.parser(
'header missing, assuming this message is ONE update')
decoding = 'update'
injected, raw = raw, ''
try:
# This does not take the BGP header - let's assume we will not break that :)
update = Update.unpack_message(injected, negotiated)
except KeyboardInterrupt:
raise
except Notify, exc:
logger.parser('could not parse the message')
logger.parser(str(exc))
return False
except Exception, exc:
logger.parser('could not parse the message')
logger.parser(str(exc))
return False
def _from_json (self, string):
try:
parsed = json.loads(string)
except ValueError:
print >> sys.stderr, 'invalid JSON message'
sys.exit(1)
if parsed.get('exabgp','0.0.0') != json_version:
print >> sys.stderr, 'invalid json version', string
sys.exit(1)
content = parsed.get('type','')
if not content:
print >> sys.stderr, 'invalid json content', string
sys.exit(1)
neighbor = _FakeNeighbor(
parsed['neighbor']['address']['local'],
parsed['neighbor']['address']['peer'],
parsed['neighbor']['asn']['local'],
parsed['neighbor']['asn']['peer'],
)
if content == 'state':
self._state()
return string
direction = parsed['neighbor']['direction']
category = parsed['neighbor']['message']['category']
header = parsed['neighbor']['message']['header']
body = parsed['neighbor']['message']['body']
raw = ''.join(chr(int(body[_:_+2],16)) for _ in range(0,len(body),2))
if content == 'open':
message = Open.unpack_message(raw)
self._open(direction,message)
return self.encoder.open(neighbor,direction,message,header,body)
if content == 'keapalive':
return self.encoder.keepalive(neighbor,direction,header,body)
if content == 'notification':
message = Notification.unpack_message(raw)
return self.encoder.notification(neighbor,direction,message,header,body)
if not self.negotiated:
print >> sys.stderr, 'invalid message sequence, open not exchange not complete', string
sys.exit(1)
message = Message.unpack(category,raw,self.negotiated)
if content == 'update':
return self.encoder.update(neighbor, direction, message, header,body)
if content == 'eor': # XXX: Should not be required
return self.encoder.update(neighbor, direction, message, header,body)
if content == 'refresh':
return self.json.refresh(neighbor, direction, message, header,body)
if content == 'operational':
return self.json.refresh(neighbor, direction, message, header,body)
raise RuntimeError('the programer is a monkey and forgot a JSON message type')
def check_update(neighbor, raw):
logger = Logger()
logger._option.parser = True
logger.parser('\ndecoding routes in configuration')
neighbor = neighbor[neighbor.keys()[0]]
path = {}
for f in NLRI.known_families():
if neighbor.add_path:
path[f] = neighbor.add_path
capa = Capabilities().new(neighbor, False)
capa[Capability.CODE.ADD_PATH] = path
capa[Capability.CODE.MULTIPROTOCOL] = neighbor.families()
# capa[Capability.CODE.FOUR_BYTES_ASN] = True
routerid_1 = str(neighbor.router_id)
routerid_2 = '.'.join(
str((int(_) + 1) % 250)
for _ in str(neighbor.router_id).split('.', -1))
o1 = Open(Version(4), ASN(neighbor.local_as), HoldTime(180),
RouterID(routerid_1), capa)
o2 = Open(Version(4), ASN(neighbor.peer_as), HoldTime(180),
RouterID(routerid_2), capa)
negotiated = Negotiated(neighbor)
negotiated.sent(o1)
negotiated.received(o2)
# grouped = False
while raw:
if raw.startswith('\xff' * 16):
kind = ord(raw[18])
size = (ord(raw[16]) << 16) + (ord(raw[17]))
injected, raw = raw[19:size], raw[size:]
if kind == 2:
logger.parser('the message is an update')
decoding = 'update'
else:
logger.parser('the message is not an update (%d) - aborting' %
kind)
return False
else:
logger.parser(
'header missing, assuming this message is ONE update')
decoding = 'update'
injected, raw = raw, ''
try:
# This does not take the BGP header - let's assume we will not break that :)
update = Update.unpack_message(injected, negotiated)
except KeyboardInterrupt:
raise
except Notify:
logger.parser('could not parse the message', 'error')
logger.parser(traceback.format_exc(), 'error')
return False
except StandardError:
logger.parser('could not parse the message', 'error')
logger.parser(traceback.format_exc(), 'error')
return False
logger.parser('') # new line
for number in range(len(update.nlris)):
change = Change(update.nlris[number], update.attributes)
logger.parser('decoded %s %s %s' %
(decoding, change.nlri.action, change.extensive()))
logger.parser(
'update json %s' %
Response.JSON(json_version).update(neighbor, 'in', update, '', ''))
return True
def _from_json (self, json_string):
try:
parsed = json.loads(json_string)
except ValueError:
print('invalid JSON message', file=sys.stderr)
sys.exit(1)
if parsed.get('exabgp','0.0.0') != json_version:
print('invalid json version', json_string, file=sys.stderr)
sys.exit(1)
content = parsed.get('type','')
if not content:
print('invalid json content', json_string, file=sys.stderr)
sys.exit(1)
neighbor = _FakeNeighbor(
parsed['neighbor']['address']['local'],
parsed['neighbor']['address']['peer'],
parsed['neighbor']['asn']['local'],
parsed['neighbor']['asn']['peer'],
)
if content == 'state':
self._state()
return json_string
direction = parsed['neighbor']['direction']
category = parsed['neighbor']['message']['category']
header = parsed['neighbor']['message']['header']
body = parsed['neighbor']['message']['body']
data = concat_bytes_i(character(int(body[_:_+2],16)) for _ in range(0,len(body),2))
if content == 'open':
message = Open.unpack_message(data)
self._open(direction,message)
return self.encoder.open(neighbor,direction,message,None,header,body)
if content == 'keepalive':
return self.encoder.keepalive(neighbor,direction,None,header,body)
if content == 'notification':
# XXX: Use the code of the Notifcation class here ..
message = Notification.unpack_message(data)
if (message.code, message.subcode) != (6, 2):
message.data = data if not len([_ for _ in data if _ not in string.printable]) else hexstring(data)
return self.encoder.notification(neighbor,direction,message,None,header,body)
if len(data) == 0:
# shutdown without shutdown communication (the old fashioned way)
message.data = ''
return self.encoder.notification(neighbor,direction,message,None,header,body)
# draft-ietf-idr-shutdown or the peer was using 6,2 with data
shutdown_length = ordinal(data[0])
data = data[1:]
if shutdown_length == 0:
message.data = "empty Shutdown Communication."
# move offset past length field
return self.encoder.notification(neighbor,direction,message,None,header,body)
if len(data) < shutdown_length:
message.data = "invalid Shutdown Communication (buffer underrun) length : %i [%s]" % (shutdown_length, hexstring(data))
return self.encoder.notification(neighbor,direction,message,None,header,body)
if shutdown_length > 128:
message.data = "invalid Shutdown Communication (too large) length : %i [%s]" % (shutdown_length, hexstring(data))
return self.encoder.notification(neighbor,direction,message,None,header,body)
try:
message.data = 'Shutdown Communication: "%s"' % \
data[:shutdown_length].decode('utf-8').replace('\r',' ').replace('\n',' ')
except UnicodeDecodeError:
message.data = "invalid Shutdown Communication (invalid UTF-8) length : %i [%s]" % (shutdown_length, hexstring(data))
return self.encoder.notification(neighbor,direction,message,None,header,body)
trailer = data[shutdown_length:]
if trailer:
message.data += ", trailing data: " + hexstring(trailer)
return self.encoder.notification(neighbor,direction,message,None,header,body)
if not self.negotiated:
print('invalid message sequence, open not exchange not complete', json_string, file=sys.stderr)
sys.exit(1)
message = Message.unpack(category,data,self.negotiated)
if content == 'update':
return self.encoder.update(neighbor, direction, message, None, header,body)
if content == 'eor': # XXX: Should not be required
return self.encoder.update(neighbor, direction, message, None, header,body)
if content == 'refresh':
return self.json.refresh(neighbor, direction, message, None, header,body)
if content == 'operational':
return self.json.refresh(neighbor, direction, message, None, header,body)
raise RuntimeError('the programer is a monkey and forgot a JSON message type')
def _from_json(self, direction, json_string):
try:
parsed = json.loads(json_string)
except ValueError:
print('invalid JSON message', file=sys.stderr)
sys.exit(1)
if parsed.get('exabgp', '0.0.0') != json_version:
print('invalid json version', json_string, file=sys.stderr)
sys.exit(1)
content = parsed.get('type', '')
if not content:
print('invalid json content', json_string, file=sys.stderr)
sys.exit(1)
neighbor = _FakeNeighbor(
parsed['neighbor']['address']['local'],
parsed['neighbor']['address']['peer'],
parsed['neighbor']['asn']['local'],
parsed['neighbor']['asn']['peer'],
)
if content == 'state':
self._state()
return json_string
direction = parsed['neighbor']['direction']
category = parsed['neighbor']['message']['category']
header = parsed['neighbor']['message']['header']
body = parsed['neighbor']['message']['body']
data = b''.join(bytes([int(body[_ : _ + 2], 16)]) for _ in range(0, len(body), 2))
if content == 'open':
message = Open.unpack_message(data)
self._open(direction, message)
return self.encoder.open(neighbor, direction, message, None, header, body)
if content == 'keepalive':
return self.encoder.keepalive(neighbor, direction, None, header, body)
if content == 'notification':
# XXX: Use the code of the Notifcation class here ..
message = Notification.unpack_message(data)
if (message.code, message.subcode) != (6, 2):
message.data = data if not len([_ for _ in data if _ not in string.printable]) else hexstring(data)
return self.encoder.notification(neighbor, direction, message, None, header, body)
if len(data) == 0:
# shutdown without shutdown communication (the old fashioned way)
message.data = ''
return self.encoder.notification(neighbor, direction, message, None, header, body)
# draft-ietf-idr-shutdown or the peer was using 6,2 with data
shutdown_length = data[0]
data = data[1:]
if shutdown_length == 0:
message.data = "empty Shutdown Communication."
# move offset past length field
return self.encoder.notification(neighbor, direction, message, None, header, body)
if len(data) < shutdown_length:
message.data = "invalid Shutdown Communication (buffer underrun) length : %i [%s]" % (
shutdown_length,
hexstring(data),
)
return self.encoder.notification(neighbor, direction, message, None, header, body)
if shutdown_length > 128:
message.data = "invalid Shutdown Communication (too large) length : %i [%s]" % (
shutdown_length,
hexstring(data),
)
return self.encoder.notification(neighbor, direction, message, None, header, body)
try:
message.data = 'Shutdown Communication: "%s"' % data[:shutdown_length].decode('utf-8').replace(
'\r', ' '
).replace('\n', ' ')
except UnicodeDecodeError:
message.data = "invalid Shutdown Communication (invalid UTF-8) length : %i [%s]" % (
shutdown_length,
hexstring(data),
)
return self.encoder.notification(neighbor, direction, message, None, header, body)
trailer = data[shutdown_length:]
if trailer:
message.data += ", trailing data: " + hexstring(trailer)
return self.encoder.notification(neighbor, direction, message, None, header, body)
if not self.negotiated:
print('invalid message sequence, open not exchange not complete', json_string, file=sys.stderr)
sys.exit(1)
message = Message.unpack(category, data, direction, self.negotiated)
if content == 'update':
return self.encoder.update(neighbor, direction, message, None, header, body)
if content == 'eor': # XXX: Should not be required
return self.encoder.update(neighbor, direction, message, None, header, body)
if content == 'refresh':
return self.json.refresh(neighbor, direction, message, None, header, body)
if content == 'operational':
return self.json.refresh(neighbor, direction, message, None, header, body)
raise RuntimeError('the programer is a monkey and forgot a JSON message type')
def check_neighbor(neighbors):
logger = Logger()
logger._option.parser = True
if not neighbors:
logger.parser('\ncould not find neighbor(s) to check')
return False
logger.parser('\ndecoding routes in configuration')
for name in neighbors.keys():
neighbor = neighbors[name]
path = {}
for f in NLRI.known_families():
if neighbor.add_path:
path[f] = neighbor.add_path
capa = Capabilities().new(neighbor, False)
if path:
capa[Capability.CODE.ADD_PATH] = path
capa[Capability.CODE.MULTIPROTOCOL] = neighbor.families()
o1 = Open(4, neighbor.local_as, str(neighbor.local_address), capa, 180)
o2 = Open(4, neighbor.peer_as, str(neighbor.peer_address), capa, 180)
negotiated = Negotiated(neighbor)
negotiated.sent(o1)
negotiated.received(o2)
# grouped = False
for _ in neighbor.rib.outgoing.updates(False):
pass
for change1 in neighbor.rib.outgoing.sent_changes():
str1 = change1.extensive()
packed = list(
Update([change1.nlri],
change1.attributes).messages(negotiated))
pack1 = packed[0]
logger.parser('parsed route requires %d updates' % len(packed))
logger.parser('parsed route requires %d updates' % len(packed))
logger.parser('update size is %d' % len(pack1))
logger.parser('parsed route %s' % str1)
logger.parser('parsed hex %s' % od(pack1))
# This does not take the BGP header - let's assume we will not break that :)
try:
logger.parser('') # new line
pack1s = pack1[19:] if pack1.startswith('\xFF' * 16) else pack1
update = Update.unpack_message(pack1s, negotiated)
change2 = Change(update.nlris[0], update.attributes)
str2 = change2.extensive()
pack2 = list(
Update([update.nlris[0]],
update.attributes).messages(negotiated))[0]
logger.parser('recoded route %s' % str2)
logger.parser('recoded hex %s' % od(pack2))
str1r = str1.replace(' med 100', '').replace(
' local-preference 100', '').replace(' origin igp', '')
str2r = str2.replace(' med 100', '').replace(
' local-preference 100', '').replace(' origin igp', '')
if ' name ' in str1r:
parts = str1r.split(' ')
pos = parts.index('name')
str1r = ' '.join(parts[:pos] + parts[pos + 2:])
skip = False
if str1r != str2r:
if 'attribute [' in str1r and ' 0x00 ' in str1r:
# we do not decode non-transitive attributes
logger.parser(
'skipping string check on update with non-transitive attribute(s)'
)
skip = True
else:
logger.parser('strings are different:')
logger.parser('[%s]' % (str1r))
logger.parser('[%s]' % (str2r))
return False
else:
logger.parser('strings are fine')
if skip:
logger.parser(
'skipping encoding for update with non-transitive attribute(s)'
)
elif pack1 != pack2:
logger.parser('encoding are different')
logger.parser('[%s]' % (od(pack1)))
logger.parser('[%s]' % (od(pack2)))
return False
else:
logger.parser('encoding is fine')
logger.parser('----------------------------------------')
logger.parser('JSON nlri %s' % change1.nlri.json())
logger.parser('JSON attr %s' % change1.attributes.json())
except Notify, exc:
logger.parser('----------------------------------------')
logger.parser(str(exc))
logger.parser('----------------------------------------')
return False
neighbor.rib.clear()