def check_update (neighbor, raw):
from exabgp.logger import Logger
logger = Logger()
logger._parser = True
logger.parser('\ndecoding routes in configuration')
n = neighbor[neighbor.keys()[0]]
p = Peer(n,None)
path = {}
for f in known_families():
if n.add_path:
path[f] = n.add_path
capa = Capabilities().new(n,False)
capa[Capability.CODE.ADD_PATH] = path
capa[Capability.CODE.MULTIPROTOCOL] = n.families()
routerid_1 = str(n.router_id)
routerid_2 = '.'.join(str((int(_)+1) % 250) for _ in str(n.router_id).split('.',-1))
o1 = Open(4,n.local_as,routerid_1,capa,180)
o2 = Open(4,n.peer_as,routerid_2,capa,180)
negotiated = Negotiated(n)
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','error')
logger.parser(str(exc),'error')
return False
except Exception,exc:
logger.parser('could not parse the message','error')
logger.parser(str(exc),'error')
return False
def setUp(self):
#env.log.all = True
self.negotiated = {}
for asn4 in (True, False):
neighbor = Neighbor()
neighbor.asn4 = asn4
capa = Capabilities().new(neighbor, False)
capa[Capability.ID.MULTIPROTOCOL] = neighbor.families()
# path = {}
# for f in known_families():
# if neighbor.add_path:
# path[f] = neighbor.add_path
# capa[Capability.ID.ADD_PATH] = path
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)
self.negotiated[asn4] = negotiated
def test_1_selfparse_open (self):
ds = Open(4,65000,'1.2.3.4',Capabilities().default(),30)
txt = ds.message()
network = Network(txt)
#print [hex(ord(c)) for c in txt]
bgp = Protocol(self.neighbor,network)
bgp.follow = False
o = bgp.read_open('127.0.0.1')
self.assertEqual(o.version,4)
self.assertEqual(o.asn,65000)
self.assertEqual(o.hold_time,30)
self.assertEqual(str(o.router_id),'1.2.3.4')
def test_1_selfparse_open (self):
ds = Open(4,65000,'1.2.3.4',Capabilities().default(),30)
txt = ds.message()
network = Network(txt)
#print [hex(ord(c)) for c in txt]
bgp = Protocol(self.neighbor,network)
bgp.follow = False
o = bgp.read_open('127.0.0.1')
self.assertEqual(o.version,4)
self.assertEqual(o.asn,65000)
self.assertEqual(o.hold_time,30)
self.assertEqual(str(o.router_id),'1.2.3.4')
def new_open (self,restarted):
sent_open = Open(
4,
self.neighbor.local_as,
self.neighbor.router_id.ip,
Capabilities().new(self.neighbor,restarted),
self.neighbor.hold_time
)
# we do not buffer open message in purpose
for _ in self.write(sent_open.message()):
yield _NOP
self.logger.message(self.me('>> %s' % sent_open))
yield sent_open
def new_open (self,restarted):
sent_open = Open(
4,
self.neighbor.local_as,
self.neighbor.router_id.ip,
Capabilities().new(self.neighbor,restarted),
self.neighbor.hold_time
)
# we do not buffer open message in purpose
for _ in self.write(sent_open.message()):
yield _NOP
self.logger.message(self.me('>> %s' % sent_open))
yield sent_open
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(4, self.neighbor.local_as, self.neighbor.router_id.ip,
Capabilities().new(self.neighbor, restarted),
self.neighbor.hold_time)
# we do not buffer open message in purpose
msg_send = sent_open.message()
for _ in self.write(msg_send):
yield _NOP
self.logger.message(self.me('>> %s' % sent_open))
if self.neighbor.api[Message.ID.OPEN]:
if self.neighbor.api['consolidate']:
header = msg_send[0:38]
body = msg_send[38:]
self.peer.reactor.processes.message(Message.ID.OPEN, self.peer,
sent_open, header, body,
'sent')
else:
self.peer.reactor.processes.message(Message.ID.OPEN, self.peer,
sent_open, '', '', 'sent')
yield sent_open
def new_open (self,restarted):
sent_open = Open(
4,
self.neighbor.local_as,
self.neighbor.router_id.ip,
Capabilities().new(self.neighbor,restarted),
self.neighbor.hold_time
)
# we do not buffer open message in purpose
msg_send = sent_open.message()
for _ in self.write(msg_send):
yield _NOP
self.logger.message(self.me('>> %s' % sent_open))
if self.neighbor.api[Message.ID.OPEN]:
if self.neighbor.api['consolidate']:
header = msg_send[0:38]
body = msg_send[38:]
self.peer.reactor.processes.message(Message.ID.OPEN,self.peer,sent_open,header,body,'sent')
else:
self.peer.reactor.processes.message(Message.ID.OPEN,self.peer,sent_open,'','','sent')
yield sent_open
def test_5_selfparse_update_announce_multi (self): o = Open(4,65000,'1.2.3.4',Capabilities().default(),30).message() k = KeepAlive().message() d = Delta(self.table) a = d.announce(65000,65000) self.table.update(routes[:-1]) u = d.update(65000,65000) network = Network(o+k+''.join(u)) bgp = Protocol(self.neighbor,network) bgp.follow = False self.assertEqual(bgp.read_message().TYPE,Open.TYPE) self.assertEqual(bgp.read_message().TYPE,KeepAlive.TYPE) updates = bgp.read_message() self.assertEqual(updates.TYPE,Update.TYPE) self.assertEqual(str(updates.added()[0]),'10.0.2.1/32')
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':
return self.encoder.notification(neighbor,direction,ord(message[0]),ord(message[1]),message[2:],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_neighbor (neighbors):
from exabgp.logger import Logger
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 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,'127.0.0.2',capa,180)
o2 = Open(4,neighbor.peer_as,'127.0.0.3',capa,180)
negotiated = Negotiated(neighbor)
negotiated.sent(o1)
negotiated.received(o2)
# grouped = False
for message 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()
def check_neighbor(neighbor):
from exabgp.logger import Logger
logger = Logger()
logger._parser = True
logger.parser('\ndecoding routes in configuration')
n = neighbor[neighbor.keys()[0]]
path = {}
for f in known_families():
if n.add_path:
path[f] = n.add_path
capa = Capabilities().new(n, False)
capa[Capability.ID.ADD_PATH] = path
capa[Capability.ID.MULTIPROTOCOL] = n.families()
o1 = Open(4, n.local_as, str(n.local_address), capa, 180)
o2 = Open(4, n.peer_as, str(n.peer_address), capa, 180)
negotiated = Negotiated(n)
negotiated.sent(o1)
negotiated.received(o2)
#grouped = False
for nei in neighbor.keys():
for message in neighbor[nei].rib.outgoing.updates(False):
pass
for change1 in neighbor[nei].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('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', '')
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('----------------------------------------')
except Notify, e:
logger.parser('----------------------------------------')
logger.parser(str(e))
logger.parser('----------------------------------------')
return False
class MyPeer(Network): _data = StringIO(Open(4,65000,'1.2.3.4',Capabilities().default(),90).message()) def read (self,l): return self._data.read(l)
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':
return self.encoder.notification(neighbor, direction,
ord(message[0]), ord(message[1]),
message[2:], 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')
