def test_handler_state(self):
idle = State("I")
cmd = State("C")
idle.add_transitions([Transition(cmd, self.match, lambda x: idle)])
fsm = FSM([idle, cmd])
self.commands = []
self.assertEqual(fsm.state, idle)
fsm.process("250 OK\n")
self.assertEqual(fsm.state, idle)
def test_simple_machine(self):
idle = State("I")
cmd = State("C")
idle.add_transitions([Transition(cmd, self.match, None)])
fsm = FSM([idle, cmd])
self.commands = []
self.assertEqual(fsm.state, idle)
fsm.process("250 OK\n")
self.assertEqual(fsm.state, cmd)
def test_handler_state(self):
idle = State("I")
cmd = State("C")
idle.add_transitions([Transition(cmd,
self.match,
lambda x: idle)])
fsm = FSM([idle, cmd])
self.commands = []
self.assertEqual(fsm.state, idle)
fsm.process("250 OK\n")
self.assertEqual(fsm.state, idle)
def test_simple_machine(self):
idle = State("I")
cmd = State("C")
idle.add_transitions([Transition(cmd,
self.match,
None)])
fsm = FSM([idle, cmd])
self.commands = []
self.assertEqual(fsm.state, idle)
fsm.process("250 OK\n")
self.assertEqual(fsm.state, cmd)
def parse_client_keys(stream):
'''
This parses a hidden-service "client_keys" file, either stealth or
basic (they're the same, except "stealth" includes a
"client-key"). Returns a list of HiddenServiceClientAuth() instances.
Note that the key does NOT include the "----BEGIN ---" markers,
nor *any* embedded whitespace. It is *just* the key blob.
'''
def parse_error(data):
raise RuntimeError("Parse error at: " + data)
class ParserState(object):
def __init__(self):
self.keys = []
self.reset()
def reset(self):
self.name = None
self.cookie = None
self.key = []
def create_key(self):
if self.name is not None:
self.keys.append(HiddenServiceClientAuth(self.name, self.cookie, self.key))
self.reset()
def set_name(self, name):
self.create_key()
self.name = name.split()[1]
def set_cookie(self, cookie):
self.cookie = cookie.split()[1]
if self.cookie.endswith('=='):
self.cookie = self.cookie[:-2]
def add_key_line(self, line):
self.key.append(line)
from txtorcon.spaghetti import FSM, State, Transition
init = State('init')
got_name = State('got_name')
got_cookie = State('got_cookie')
reading_key = State('got_key')
parser_state = ParserState()
# initial state; we want "client-name" or it's an error
init.add_transitions([
Transition(got_name, lambda line: line.startswith('client-name '), parser_state.set_name),
Transition(init, lambda line: not line.startswith('client-name '), parse_error),
])
# next up is "descriptor-cookie" or it's an error
got_name.add_transitions([
Transition(got_cookie, lambda line: line.startswith('descriptor-cookie '), parser_state.set_cookie),
Transition(init, lambda line: not line.startswith('descriptor-cookie '), parse_error),
])
# the "interesting bit": there's either a client-name if we're a
# "basic" file, or an RSA key (with "client-key" before it)
got_cookie.add_transitions([
Transition(reading_key, lambda line: line.startswith('client-key'), None),
Transition(got_name, lambda line: line.startswith('client-name '), parser_state.set_name),
])
# if we're reading an RSA key, we accumulate it in current_key.key
# until we hit a line starting with "client-name"
reading_key.add_transitions([
Transition(reading_key, lambda line: not line.startswith('client-name'), parser_state.add_key_line),
Transition(got_name, lambda line: line.startswith('client-name '), parser_state.set_name),
])
# create our FSM and parse the data
fsm = FSM([init, got_name, got_cookie, reading_key])
for line in stream.readlines():
fsm.process(line.strip())
parser_state.create_key() # make sure we get the "last" one
return parser_state.keys
def parse_client_keys(stream):
'''
This parses a hidden-service "client_keys" file, either stealth or
basic (they're the same, except "stealth" includes a
"client-key"). Returns a list of HiddenServiceClientAuth() instances.
Note that the key does NOT include the "----BEGIN ---" markers,
nor *any* embedded whitespace. It is *just* the key blob.
'''
def parse_error(data):
raise RuntimeError("Parse error at: " + data)
class ParserState(object):
def __init__(self):
self.keys = []
self.reset()
def reset(self):
self.name = None
self.cookie = None
self.key = []
def create_key(self):
if self.name is not None:
self.keys.append(HiddenServiceClientAuth(self.name, self.cookie, self.key))
self.reset()
def set_name(self, name):
self.create_key()
self.name = name.split()[1]
def set_cookie(self, cookie):
self.cookie = cookie.split()[1]
if self.cookie.endswith('=='):
self.cookie = self.cookie[:-2]
def add_key_line(self, line):
self.key.append(line)
from txtorcon.spaghetti import FSM, State, Transition
init = State('init')
got_name = State('got_name')
got_cookie = State('got_cookie')
reading_key = State('got_key')
parser_state = ParserState()
# initial state; we want "client-name" or it's an error
init.add_transitions([
Transition(got_name, lambda line: line.startswith('client-name '), parser_state.set_name),
Transition(init, lambda line: not line.startswith('client-name '), parse_error),
])
# next up is "descriptor-cookie" or it's an error
got_name.add_transitions([
Transition(got_cookie, lambda line: line.startswith('descriptor-cookie '), parser_state.set_cookie),
Transition(init, lambda line: not line.startswith('descriptor-cookie '), parse_error),
])
# the "interesting bit": there's either a client-name if we're a
# "basic" file, or an RSA key (with "client-key" before it)
got_cookie.add_transitions([
Transition(reading_key, lambda line: line.startswith('client-key'), None),
Transition(got_name, lambda line: line.startswith('client-name '), parser_state.set_name),
])
# if we're reading an RSA key, we accumulate it in current_key.key
# until we hit a line starting with "client-name"
reading_key.add_transitions([
Transition(reading_key, lambda line: not line.startswith('client-name'), parser_state.add_key_line),
Transition(got_name, lambda line: line.startswith('client-name '), parser_state.set_name),
])
# create our FSM and parse the data
fsm = FSM([init, got_name, got_cookie, reading_key])
for line in stream.readlines():
fsm.process(line.strip())
parser_state.create_key() # make sure we get the "last" one
return parser_state.keys