X-Git-Url: https://git.novaco.in/?a=blobdiff_plain;f=lib%2Finterface.py;h=4424a0ccec3d3a483f261bed7ba5c8a997cf2c94;hb=f9985ae233d035d6b41aa18e882688af4b670ae0;hp=cf87442fa409ec9e66b3e1e274723dee40711a13;hpb=6b6c508976039782835c4f77ac4ae1a6afd8b73a;p=electrum-nvc.git diff --git a/lib/interface.py b/lib/interface.py index cf87442..4424a0c 100644 --- a/lib/interface.py +++ b/lib/interface.py @@ -17,41 +17,88 @@ # along with this program. If not, see . -import random, socket, ast, re, ssl, errno +import random, ast, re, errno, os import threading, traceback, sys, time, json, Queue +import socks +import socket +import ssl from version import ELECTRUM_VERSION, PROTOCOL_VERSION from util import print_error, print_msg +from simple_config import SimpleConfig +import x509 DEFAULT_TIMEOUT = 5 proxy_modes = ['socks4', 'socks5', 'http'] -def pick_random_server(): - return random.choice( filter_protocol(DEFAULT_SERVERS,'s') ) + + +def cert_verify_hostname(s): + # hostname verification (disabled) + from backports.ssl_match_hostname import match_hostname, CertificateError + try: + match_hostname(s.getpeercert(True), host) + print_error("hostname matches", host) + except CertificateError, ce: + print_error("hostname did not match", host) + class Interface(threading.Thread): - def init_server(self, host, port, proxy=None, use_ssl=True): - self.host = host - self.port = port - self.proxy = proxy - self.use_ssl = use_ssl + def __init__(self, server, config = None): + + threading.Thread.__init__(self) + self.daemon = True + self.config = config if config is not None else SimpleConfig() + self.connect_event = threading.Event() + + self.subscriptions = {} + self.lock = threading.Lock() + + self.rtime = 0 + self.bytes_received = 0 + self.is_connected = False self.poll_interval = 1 + self.debug = False # dump network messages. can be changed at runtime using the console + #json self.message_id = 0 self.unanswered_requests = {} - self.pending_transactions_for_notifications= [] + + # parse server + self.server = server + try: + host, port, protocol = self.server.split(':') + port = int(port) + except Exception: + self.server = None + return + + if protocol not in 'ghst': + raise Exception('Unknown protocol: %s'%protocol) + + self.host = host + self.port = port + self.protocol = protocol + self.use_ssl = ( protocol in 'sg' ) + self.proxy = self.parse_proxy_options(self.config.get('proxy')) + if self.proxy: + self.proxy_mode = proxy_modes.index(self.proxy["mode"]) + 1 + + + def queue_json_response(self, c): # uncomment to debug - # print_error( "<--",c ) + if self.debug: + print_error( "<--",c ) msg_id = c.get('id') error = c.get('error') @@ -106,14 +153,13 @@ class Interface(threading.Thread): self.server_version = result - def init_http(self, host, port, proxy=None, use_ssl=True): - self.init_server(host, port, proxy, use_ssl) + def start_http(self): self.session_id = None self.is_connected = True self.connection_msg = ('https' if self.use_ssl else 'http') + '://%s:%d'%( self.host, self.port ) try: self.poll() - except: + except Exception: print_error("http init session failed") self.is_connected = False return @@ -135,7 +181,7 @@ class Interface(threading.Thread): break except socket.error: break - except: + except Exception: traceback.print_exc(file=sys.stdout) break @@ -143,7 +189,7 @@ class Interface(threading.Thread): def poll(self): - self.send([]) + self.send([], None) def send_http(self, messages, callback): @@ -151,8 +197,7 @@ class Interface(threading.Thread): print_error( "send_http", messages ) if self.proxy: - import socks - socks.setdefaultproxy(proxy_modes.index(self.proxy["mode"]) + 1, self.proxy["host"], int(self.proxy["port"]) ) + socks.setdefaultproxy(self.proxy_mode, self.proxy["host"], int(self.proxy["port"]) ) socks.wrapmodule(urllib2) cj = cookielib.CookieJar() @@ -162,11 +207,13 @@ class Interface(threading.Thread): t1 = time.time() data = [] + ids = [] for m in messages: method, params = m if type(params) != type([]): params = [params] data.append( { 'method':method, 'id':self.message_id, 'params':params } ) self.unanswered_requests[self.message_id] = method, params, callback + ids.append(self.message_id) self.message_id += 1 if data: @@ -183,7 +230,7 @@ class Interface(threading.Thread): try: req = urllib2.Request(self.connection_msg, data_json, headers) response_stream = urllib2.urlopen(req, timeout=DEFAULT_TIMEOUT) - except: + except Exception: return for index, cookie in enumerate(cj): @@ -209,41 +256,138 @@ class Interface(threading.Thread): self.rtime = time.time() - t1 self.is_connected = True + return ids - def init_tcp(self, host, port, proxy=None, use_ssl=True): - self.init_server(host, port, proxy, use_ssl) + def start_tcp(self): - global proxy_modes - self.connection_msg = "%s:%d"%(self.host,self.port) - if self.proxy is None: - s = socket.socket( socket.AF_INET, socket.SOCK_STREAM ) - else: - self.connection_msg += " using proxy %s:%s:%s"%(self.proxy.get('mode'), self.proxy.get('host'), self.proxy.get('port')) - import socks - s = socks.socksocket() - s.setproxy(proxy_modes.index(self.proxy["mode"]) + 1, self.proxy["host"], int(self.proxy["port"]) ) + self.connection_msg = self.host + ':%d' % self.port + + if self.proxy is not None: + + socks.setdefaultproxy(self.proxy_mode, self.proxy["host"], int(self.proxy["port"])) + socket.socket = socks.socksocket + # prevent dns leaks, see http://stackoverflow.com/questions/13184205/dns-over-proxy + def getaddrinfo(*args): + return [(socket.AF_INET, socket.SOCK_STREAM, 6, '', (args[0], args[1]))] + socket.getaddrinfo = getaddrinfo if self.use_ssl: - s = ssl.wrap_socket(s, ssl_version=ssl.PROTOCOL_SSLv23, do_handshake_on_connect=True) - - s.settimeout(2) - s.setsockopt(socket.SOL_SOCKET, socket.SO_KEEPALIVE, 1) + cert_path = os.path.join( self.config.path, 'certs', self.host) + + if not os.path.exists(cert_path): + is_new = True + # get server certificate. + # Do not use ssl.get_server_certificate because it does not work with proxy + try: + l = socket.getaddrinfo(self.host, self.port, socket.AF_UNSPEC, socket.SOCK_STREAM) + except socket.gaierror: + print_error("error: cannot resolve", self.host) + return + + for res in l: + try: + s = socket.socket( res[0], socket.SOCK_STREAM ) + s.connect(res[4]) + except: + s = None + continue + + try: + s = ssl.wrap_socket(s, ssl_version=ssl.PROTOCOL_SSLv3, cert_reqs=ssl.CERT_NONE, ca_certs=None) + except ssl.SSLError, e: + print_error("SSL error retrieving SSL certificate:", self.host, e) + s = None + + break + + if s is None: + return + + dercert = s.getpeercert(True) + s.close() + cert = ssl.DER_cert_to_PEM_cert(dercert) + # workaround android bug + cert = re.sub("([^\n])-----END CERTIFICATE-----","\\1\n-----END CERTIFICATE-----",cert) + temporary_path = cert_path + '.temp' + with open(temporary_path,"w") as f: + f.write(cert) + + else: + is_new = False try: - s.connect(( self.host.encode('ascii'), int(self.port))) - except: - #traceback.print_exc(file=sys.stdout) - print_error("failed to connect", host, port) - self.is_connected = False - self.s = None + addrinfo = socket.getaddrinfo(self.host, self.port, socket.AF_UNSPEC, socket.SOCK_STREAM) + except socket.gaierror: + print_error("error: cannot resolve", self.host) + return + + for res in addrinfo: + try: + s = socket.socket( res[0], socket.SOCK_STREAM ) + s.settimeout(2) + s.setsockopt(socket.SOL_SOCKET, socket.SO_KEEPALIVE, 1) + s.connect(res[4]) + except: + s = None + continue + break + + if s is None: + print_error("failed to connect", self.host, self.port) return + if self.use_ssl: + try: + s = ssl.wrap_socket(s, + ssl_version=ssl.PROTOCOL_SSLv3, + cert_reqs=ssl.CERT_REQUIRED, + ca_certs= (temporary_path if is_new else cert_path), + do_handshake_on_connect=True) + except ssl.SSLError, e: + print_error("SSL error:", self.host, e) + if e.errno != 1: + return + if is_new: + rej = cert_path + '.rej' + if os.path.exists(rej): + os.unlink(rej) + os.rename(temporary_path, rej) + else: + with open(cert_path) as f: + cert = f.read() + try: + x = x509.X509() + x.parse(cert) + x.slow_parse() + except: + traceback.print_exc(file=sys.stdout) + print_error("wrong certificate", self.host) + return + try: + x.check_date() + except: + print_error("certificate has expired:", cert_path) + os.unlink(cert_path) + return + print_error("wrong certificate", self.host) + return + except Exception: + print_error("wrap_socket failed", self.host) + traceback.print_exc(file=sys.stdout) + return + + if is_new: + print_error("saving certificate for", self.host) + os.rename(temporary_path, cert_path) + s.settimeout(60) self.s = s self.is_connected = True + print_error("connected to", self.host, self.port) + def run_tcp(self): try: @@ -258,7 +402,9 @@ class Interface(threading.Thread): except ssl.SSLError: timeout = True except socket.error, err: - if err.errno in [11, 10035]: + if err.errno == 60: + timeout = True + elif err.errno in [11, 10035]: print_error("socket errno", err.errno) time.sleep(0.1) continue @@ -284,7 +430,7 @@ class Interface(threading.Thread): c = json.loads(c) self.queue_json_response(c) - except: + except Exception: traceback.print_exc(file=sys.stdout) self.is_connected = False @@ -299,8 +445,8 @@ class Interface(threading.Thread): request = json.dumps( { 'id':self.message_id, 'method':method, 'params':params } ) self.unanswered_requests[self.message_id] = method, params, callback ids.append(self.message_id) - # uncomment to debug - # print "-->", request + if self.debug: + print "-->", request self.message_id += 1 out += request + '\n' while out: @@ -321,65 +467,18 @@ class Interface(threading.Thread): - def __init__(self, config=None): - #self.server = random.choice(filter_protocol(DEFAULT_SERVERS, 's')) - self.proxy = None - - if config is None: - from simple_config import SimpleConfig - config = SimpleConfig() - - threading.Thread.__init__(self) - self.daemon = True - self.config = config - self.connect_event = threading.Event() - - self.subscriptions = {} - self.lock = threading.Lock() - - self.servers = {} # actual list from IRC - self.rtime = 0 - self.bytes_received = 0 - self.is_connected = False - - # init with None server, in case we are offline - self.init_server(None, None) - - - def init_interface(self): - if self.config.get('server'): - self.init_with_server(self.config) - else: - if self.config.get('auto_cycle') is None: - self.config.set_key('auto_cycle', True, False) + def start_interface(self): - if not self.is_connected: - self.connect_event.set() - return + if self.protocol in 'st': + self.start_tcp() + elif self.protocol in 'gh': + self.start_http() self.connect_event.set() - def init_with_server(self, config): - - s = config.get('server') - host, port, protocol = s.split(':') - port = int(port) - - self.protocol = protocol - proxy = self.parse_proxy_options(config.get('proxy')) - self.server = host + ':%d:%s'%(port, protocol) - - #print protocol, host, port - if protocol in 'st': - self.init_tcp(host, port, proxy, use_ssl=(protocol=='s')) - elif protocol in 'gh': - self.init_http(host, port, proxy, use_ssl=(protocol=='g')) - else: - raise BaseException('Unknown protocol: %s'%protocol) - def stop_subscriptions(self): for callback in self.subscriptions.keys(): @@ -404,6 +503,7 @@ class Interface(threading.Thread): self.subscriptions[callback].append(message) if not self.is_connected: + print_error("interface: trying to send while not connected") return if self.protocol in 'st': @@ -442,14 +542,39 @@ class Interface(threading.Thread): self.s.shutdown(socket.SHUT_RDWR) self.s.close() + self.is_connected = False + def is_up_to_date(self): return self.unanswered_requests == {} + + def start(self, queue = None, wait = False): + if not self.server: + return + self.queue = queue if queue else Queue.Queue() + threading.Thread.start(self) + if wait: + self.connect_event.wait() + + + def run(self): + self.start_interface() + if self.is_connected: + self.send([('server.version', [ELECTRUM_VERSION, PROTOCOL_VERSION])], self.on_version) + self.change_status() + self.run_tcp() if self.protocol in 'st' else self.run_http() + self.change_status() + + + def change_status(self): + #print "change status", self.server, self.is_connected + self.queue.put(self) + + def synchronous_get(self, requests, timeout=100000000): - # todo: use generators, unanswered_requests should be a list of arrays... - q = Queue.Queue() + queue = Queue.Queue() ids = self.send(requests, lambda i,r: queue.put(r)) id2 = ids[:] res = {} @@ -465,21 +590,38 @@ class Interface(threading.Thread): return out - def start(self, queue): - self.queue = queue - threading.Thread.start(self) - def run(self): - self.init_interface() - if self.is_connected: - self.send([('server.version', [ELECTRUM_VERSION, PROTOCOL_VERSION])], self.on_version) - self.change_status() - self.run_tcp() if self.protocol in 'st' else self.run_http() - self.change_status() - +def check_cert(host, cert): + try: + x = x509.X509() + x.parse(cert) + x.slow_parse() + except: + traceback.print_exc(file=sys.stdout) + return - def change_status(self): - #print "change status", self.server, self.is_connected - self.queue.put(self) + try: + x.check_date() + expired = False + except: + expired = True + + m = "host: %s\n"%host + m += "has_expired: %s\n"% expired + print_msg(m) + + +def test_certificates(): + config = SimpleConfig() + mydir = os.path.join(config.path, "certs") + certs = os.listdir(mydir) + for c in certs: + print c + p = os.path.join(mydir,c) + with open(p) as f: + cert = f.read() + check_cert(c, cert) +if __name__ == "__main__": + test_certificates()