def as_path(tokeniser):
as_seq = []
as_set = []
value = tokeniser()
inset = False
try:
if value == '[':
while True:
value = tokeniser()
if value == ',':
continue
if value in ('(', '['):
inset = True
while True:
value = tokeniser()
if value in (')', ']'):
break
as_set.append(ASN.from_string(value))
if value == ')':
inset = False
continue
if value == ']':
if inset:
inset = False
continue
break
as_seq.append(ASN.from_string(value))
else:
as_seq.append(ASN.from_string(value))
except ValueError:
raise ValueError('could not parse as-path')
return ASPath(as_seq, as_set)
def as_path (tokeniser):
as_seq = []
as_set = []
value = tokeniser()
inset = False
try:
if value == '[':
while True:
value = tokeniser()
if value == ',':
continue
if value in ('(','['):
inset = True
while True:
value = tokeniser()
if value == ')':
break
as_set.append(ASN.from_string(value))
if value == ')':
inset = False
continue
if value == ']':
if inset:
inset = False
continue
break
as_seq.append(ASN.from_string(value))
else:
as_seq.append(ASN.from_string(value))
except ValueError:
raise ValueError('could not parse as-path')
return ASPath(as_seq,as_set)
def as_path(tokeniser):
as_seq = []
as_set = []
value = tokeniser()
inset = False
try:
if value == "[":
while True:
value = tokeniser()
if value == ",":
continue
if value in ("(", "["):
inset = True
while True:
value = tokeniser()
if value == ")":
break
as_set.append(ASN.from_string(value))
if value == ")":
inset = False
continue
if value == "]":
if inset:
inset = False
continue
break
as_seq.append(ASN.from_string(value))
else:
as_seq.append(ASN.from_string(value))
except ValueError:
raise ValueError("could not parse as-path")
return ASPath(as_seq, as_set)
def as_path(tokeniser):
as_path = []
insert = None
while True:
value = tokeniser()
if value == '[':
value = tokeniser.peek()
if value != '{':
insert = SEQUENCE()
else:
insert = CONFED_SEQUENCE()
elif value == '(':
value = tokeniser.peek()
if value != '{':
insert = SET()
else:
insert = CONFED_SET()
elif len(as_path) == 0:
try:
return ASPath(ASN.from_string(value))
except ValueError:
raise ValueError('could not parse as-path')
else:
raise ValueError('could not parse as-path')
while True:
value = tokeniser()
# could be too nice eating a trailing and ignore a erroneous },,
# but simpler that way
if value in (',', '}'):
continue
if value in (')', ']'):
as_path.append(insert)
value = tokeniser.peek()
if value in ('[', '('):
break
return ASPath(as_path)
try:
insert.append(ASN.from_string(value))
continue
except ValueError:
raise ValueError('could not parse as-path')
def aggregator(tokeniser):
eat = True if tokeniser.tokens[0] == "(" else False
if eat:
tokeniser()
value = tokeniser()
if value != "(":
tokeniser.rewind(value)
return None
try:
as_number, address = tokeniser().split(":")
local_as = ASN.from_string(as_number)
local_address = RouterID(address)
except (ValueError, IndexError):
raise ValueError("invalid aggregator")
if eat:
value = tokeniser()
if value != ")":
raise ValueError("invalid aggregator")
# XXX: This is buggy it can be an Aggregator4
return Aggregator(local_as, local_address)
def aggregator(tokeniser):
agg = tokeniser()
eat = True if agg == '(' else False
if eat:
agg = tokeniser()
if agg.endswith(')'):
eat = False
agg = agg[:-1]
elif agg.startswith('('):
if agg.endswith(')'):
eat = False
agg = agg[1:-1]
else:
eat = True
agg = agg[1:]
try:
as_number, address = agg.split(':')
local_as = ASN.from_string(as_number)
local_address = RouterID(address)
except (ValueError, IndexError):
raise ValueError('invalid aggregator')
if eat:
if tokeniser() != ')':
raise ValueError('invalid aggregator')
return Aggregator(local_as, local_address)
def aggregator(tokeniser):
eat = True if tokeniser.tokens[0] == '(' else False
if eat:
tokeniser()
value = tokeniser()
if value != '(':
tokeniser.rewind(value)
return None
try:
as_number, address = tokeniser().split(':')
local_as = ASN.from_string(as_number)
local_address = RouterID(address)
except (ValueError, IndexError):
raise ValueError('invalid aggregator')
if eat:
value = tokeniser()
if value != ')':
raise ValueError('invalid aggregator')
# XXX: This is buggy it can be an Aggregator4
return Aggregator(local_as, local_address)
def aggregator(tokeniser):
first = tokeniser.peek()
eat = True if first == '(' else False
if eat:
tokeniser()
try:
as_number, address = tokeniser().split(':')
local_as = ASN.from_string(as_number)
local_address = RouterID(address)
except (ValueError, IndexError):
raise ValueError('invalid aggregator')
if eat:
if tokeniser() != ')':
raise ValueError('invalid aggregator')
return Aggregator(local_as, local_address)
def aggregator (tokeniser):
first = tokeniser.peek()
eat = True if first == '(' else False
if eat:
tokeniser()
try:
as_number,address = tokeniser().split(':')
local_as = ASN.from_string(as_number)
local_address = RouterID(address)
except (ValueError,IndexError):
raise ValueError('invalid aggregator')
if eat:
if tokeniser() != ')':
raise ValueError('invalid aggregator')
return Aggregator(local_as,local_address)
def aggregator(tokeniser):
eat = tokeniser.tokens and tokeniser.tokens[0] == '('
if eat:
tokeniser()
try:
as_number, address = tokeniser().split(':')
local_as = ASN.from_string(as_number)
local_address = RouterID(address)
except (ValueError, IndexError):
raise ValueError('invalid aggregator')
if eat:
if tokeniser() != ')':
raise ValueError('invalid aggregator')
# XXX: This could be buggy - check it
if local_as.asn4():
return Aggregator4(local_as, local_address)
return Aggregator(local_as, local_address)
def aggregator (tokeniser):
eat = tokeniser.tokens and tokeniser.tokens[0] == '('
if eat:
tokeniser()
try:
as_number,address = tokeniser().split(':')
local_as = ASN.from_string(as_number)
local_address = RouterID(address)
except (ValueError,IndexError):
raise ValueError('invalid aggregator')
if eat:
if tokeniser() != ')':
raise ValueError('invalid aggregator')
# XXX: This could be buggy - check it
if local_as.asn4():
return Aggregator4(local_as,local_address)
return Aggregator(local_as,local_address)
