dnomd343
/
shadowsocksr
mirror of https://github.com/dnomd343/shadowsocksr
1
0
Fork 0
Code Issues Projects Releases Wiki Activity
Browse Source

sendback param of server_post_decrypt 

details of errors
dev
BreakWa11 9 years ago
parent
f58d76da47
commit
bd43069bcf
4 changed files with 62 additions and 55 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Unified View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 63
      shadowsocks/obfsplugin/auth.py
  2. 2
      shadowsocks/obfsplugin/plain.py
  3. 26
      shadowsocks/obfsplugin/verify.py
  4. 26
      shadowsocks/tcprelay.py

63
shadowsocks/obfsplugin/auth.py
View File

@ -277,7 +277,7 @@ class auth_simple(verify_base):
def server_post_decrypt(self, buf): def server_post_decrypt(self, buf):
if self.raw_trans: if self.raw_trans:
return buf return (buf, False)
self.recv_buf += buf self.recv_buf += buf
out_buf = b'' out_buf = b''
while len(self.recv_buf) > 2: while len(self.recv_buf) > 2:
@ -287,7 +287,7 @@ class auth_simple(verify_base):
self.recv_buf = b'' self.recv_buf = b''
if self.decrypt_packet_num == 0: if self.decrypt_packet_num == 0:
logging.info('auth_simple: over size') logging.info('auth_simple: over size')
return b'E' return (b'E', False)
else: else:
raise Exception('server_post_decrype data error') raise Exception('server_post_decrype data error')
if length > len(self.recv_buf): if length > len(self.recv_buf):
@ -298,7 +298,7 @@ class auth_simple(verify_base):
self.raw_trans = True self.raw_trans = True
self.recv_buf = b'' self.recv_buf = b''
if self.decrypt_packet_num == 0: if self.decrypt_packet_num == 0:
return b'E' return (b'E', False)
else: else:
raise Exception('server_post_decrype data uncorrect CRC32') raise Exception('server_post_decrype data uncorrect CRC32')
@ -309,7 +309,7 @@ class auth_simple(verify_base):
self.raw_trans = True self.raw_trans = True
self.recv_buf = b'' self.recv_buf = b''
logging.info('auth_simple: too short') logging.info('auth_simple: too short')
return b'E' return (b'E', False)
utc_time = struct.unpack('<I', out_buf[:4])[0] utc_time = struct.unpack('<I', out_buf[:4])[0]
client_id = struct.unpack('<I', out_buf[4:8])[0] client_id = struct.unpack('<I', out_buf[4:8])[0]
connection_id = struct.unpack('<I', out_buf[8:12])[0] connection_id = struct.unpack('<I', out_buf[8:12])[0]
@ -319,7 +319,7 @@ class auth_simple(verify_base):
self.raw_trans = True self.raw_trans = True
self.recv_buf = b'' self.recv_buf = b''
logging.info('auth_simple: wrong timestamp, time_dif %d, data %s' % (time_dif, binascii.hexlify(out_buf),)) logging.info('auth_simple: wrong timestamp, time_dif %d, data %s' % (time_dif, binascii.hexlify(out_buf),))
return b'E' return (b'E', False)
elif self.server_info.data.insert(client_id, connection_id): elif self.server_info.data.insert(client_id, connection_id):
self.has_recv_header = True self.has_recv_header = True
out_buf = out_buf[12:] out_buf = out_buf[12:]
@ -329,13 +329,13 @@ class auth_simple(verify_base):
self.raw_trans = True self.raw_trans = True
self.recv_buf = b'' self.recv_buf = b''
logging.info('auth_simple: auth fail, data %s' % (binascii.hexlify(out_buf),)) logging.info('auth_simple: auth fail, data %s' % (binascii.hexlify(out_buf),))
return b'E' return (b'E', False)
self.recv_buf = self.recv_buf[length:] self.recv_buf = self.recv_buf[length:]
if out_buf: if out_buf:
self.server_info.data.update(self.client_id, self.connection_id) self.server_info.data.update(self.client_id, self.connection_id)
self.decrypt_packet_num += 1 self.decrypt_packet_num += 1
return out_buf return (out_buf, False)
class auth_sha1(verify_base): class auth_sha1(verify_base):
def __init__(self, method): def __init__(self, method):
@ -446,33 +446,33 @@ class auth_sha1(verify_base):
def server_post_decrypt(self, buf): def server_post_decrypt(self, buf):
if self.raw_trans: if self.raw_trans:
return buf return (buf, False)
self.recv_buf += buf self.recv_buf += buf
out_buf = b'' out_buf = b''
if not self.has_recv_header: if not self.has_recv_header:
if len(self.recv_buf) < 4: if len(self.recv_buf) < 4:
return b'' return (b'', False)
crc = struct.pack('<I', binascii.crc32(self.server_info.key) & 0xFFFFFFFF) crc = struct.pack('<I', binascii.crc32(self.server_info.key) & 0xFFFFFFFF)
if crc != self.recv_buf[:4]: if crc != self.recv_buf[:4]:
if self.method == 'auth_sha1': if self.method == 'auth_sha1':
return b'E' return (b'E', False)
else: else:
self.raw_trans = True self.raw_trans = True
return self.recv_buf return (self.recv_buf, False)
length = struct.unpack('>H', self.recv_buf[4:6])[0] length = struct.unpack('>H', self.recv_buf[4:6])[0]
if length > len(self.recv_buf): if length > len(self.recv_buf):
return b'' return (b'', False)
sha1data = hmac.new(self.server_info.recv_iv + self.server_info.key, self.recv_buf[:length - 10], hashlib.sha1).digest()[:10] sha1data = hmac.new(self.server_info.recv_iv + self.server_info.key, self.recv_buf[:length - 10], hashlib.sha1).digest()[:10]
if sha1data != self.recv_buf[length - 10:length]: if sha1data != self.recv_buf[length - 10:length]:
logging.error('auth_sha1 data uncorrect auth HMAC-SHA1') logging.error('auth_sha1 data uncorrect auth HMAC-SHA1')
return b'E' return (b'E', False)
pos = common.ord(self.recv_buf[6]) + 6 pos = common.ord(self.recv_buf[6]) + 6
out_buf = self.recv_buf[pos:length - 10] out_buf = self.recv_buf[pos:length - 10]
if len(out_buf) < 12: if len(out_buf) < 12:
self.raw_trans = True self.raw_trans = True
self.recv_buf = b'' self.recv_buf = b''
logging.info('auth_sha1: too short') logging.info('auth_sha1: too short')
return b'E' return (b'E', False)
utc_time = struct.unpack('<I', out_buf[:4])[0] utc_time = struct.unpack('<I', out_buf[:4])[0]
client_id = struct.unpack('<I', out_buf[4:8])[0] client_id = struct.unpack('<I', out_buf[4:8])[0]
connection_id = struct.unpack('<I', out_buf[8:12])[0] connection_id = struct.unpack('<I', out_buf[8:12])[0]
@ -482,7 +482,7 @@ class auth_sha1(verify_base):
self.raw_trans = True self.raw_trans = True
self.recv_buf = b'' self.recv_buf = b''
logging.info('auth_sha1: wrong timestamp, time_dif %d, data %s' % (time_dif, binascii.hexlify(out_buf),)) logging.info('auth_sha1: wrong timestamp, time_dif %d, data %s' % (time_dif, binascii.hexlify(out_buf),))
return b'E' return (b'E', False)
elif self.server_info.data.insert(client_id, connection_id): elif self.server_info.data.insert(client_id, connection_id):
self.has_recv_header = True self.has_recv_header = True
out_buf = out_buf[12:] out_buf = out_buf[12:]
@ -492,7 +492,7 @@ class auth_sha1(verify_base):
self.raw_trans = True self.raw_trans = True
self.recv_buf = b'' self.recv_buf = b''
logging.info('auth_sha1: auth fail, data %s' % (binascii.hexlify(out_buf),)) logging.info('auth_sha1: auth fail, data %s' % (binascii.hexlify(out_buf),))
return b'E' return (b'E', False)
self.recv_buf = self.recv_buf[length:] self.recv_buf = self.recv_buf[length:]
self.has_recv_header = True self.has_recv_header = True
@ -503,7 +503,7 @@ class auth_sha1(verify_base):
self.recv_buf = b'' self.recv_buf = b''
if self.decrypt_packet_num == 0: if self.decrypt_packet_num == 0:
logging.info('auth_sha1: over size') logging.info('auth_sha1: over size')
return b'E' return (b'E', False)
else: else:
raise Exception('server_post_decrype data error') raise Exception('server_post_decrype data error')
if length > len(self.recv_buf): if length > len(self.recv_buf):
@ -514,7 +514,7 @@ class auth_sha1(verify_base):
self.raw_trans = True self.raw_trans = True
self.recv_buf = b'' self.recv_buf = b''
if self.decrypt_packet_num == 0: if self.decrypt_packet_num == 0:
return b'E' return (b'E', False)
else: else:
raise Exception('server_post_decrype data uncorrect checksum') raise Exception('server_post_decrype data uncorrect checksum')
@ -525,7 +525,7 @@ class auth_sha1(verify_base):
if out_buf: if out_buf:
self.server_info.data.update(self.client_id, self.connection_id) self.server_info.data.update(self.client_id, self.connection_id)
self.decrypt_packet_num += 1 self.decrypt_packet_num += 1
return out_buf return (out_buf, False)
class obfs_auth_v2_data(object): class obfs_auth_v2_data(object):
def __init__(self): def __init__(self):
@ -686,26 +686,26 @@ class auth_sha1_v2(verify_base):
def server_post_decrypt(self, buf): def server_post_decrypt(self, buf):
if self.raw_trans: if self.raw_trans:
return buf return (buf, False)
self.recv_buf += buf self.recv_buf += buf
out_buf = b'' out_buf = b''
if not self.has_recv_header: if not self.has_recv_header:
if len(self.recv_buf) < 4: if len(self.recv_buf) < 4:
return b'' return (b'', False)
crc = struct.pack('<I', binascii.crc32(self.salt + self.server_info.key) & 0xFFFFFFFF) crc = struct.pack('<I', binascii.crc32(self.salt + self.server_info.key) & 0xFFFFFFFF)
if crc != self.recv_buf[:4]: if crc != self.recv_buf[:4]:
if self.method == 'auth_sha1_v2': if self.method == 'auth_sha1_v2':
return b'E' return (b'E', False)
else: else:
self.raw_trans = True self.raw_trans = True
return self.recv_buf return (self.recv_buf, False)
length = struct.unpack('>H', self.recv_buf[4:6])[0] length = struct.unpack('>H', self.recv_buf[4:6])[0]
if length > len(self.recv_buf): if length > len(self.recv_buf):
return b'' return (b'', False)
sha1data = hmac.new(self.server_info.recv_iv + self.server_info.key, self.recv_buf[:length - 10], hashlib.sha1).digest()[:10] sha1data = hmac.new(self.server_info.recv_iv + self.server_info.key, self.recv_buf[:length - 10], hashlib.sha1).digest()[:10]
if sha1data != self.recv_buf[length - 10:length]: if sha1data != self.recv_buf[length - 10:length]:
logging.error('auth_sha1_v2 data uncorrect auth HMAC-SHA1') logging.error('auth_sha1_v2 data uncorrect auth HMAC-SHA1')
return b'E' return (b'E', False)
pos = common.ord(self.recv_buf[6]) pos = common.ord(self.recv_buf[6])
if pos < 255: if pos < 255:
pos += 6 pos += 6
@ -716,7 +716,7 @@ class auth_sha1_v2(verify_base):
self.raw_trans = True self.raw_trans = True
self.recv_buf = b'' self.recv_buf = b''
logging.info('auth_sha1_v2: too short') logging.info('auth_sha1_v2: too short')
return b'E' return (b'E', False)
client_id = struct.unpack('<Q', out_buf[:8])[0] client_id = struct.unpack('<Q', out_buf[:8])[0]
connection_id = struct.unpack('<I', out_buf[8:12])[0] connection_id = struct.unpack('<I', out_buf[8:12])[0]
if self.server_info.data.insert(client_id, connection_id): if self.server_info.data.insert(client_id, connection_id):
@ -728,10 +728,11 @@ class auth_sha1_v2(verify_base):
self.raw_trans = True self.raw_trans = True
self.recv_buf = b'' self.recv_buf = b''
logging.info('auth_sha1_v2: auth fail, data %s' % (binascii.hexlify(out_buf),)) logging.info('auth_sha1_v2: auth fail, data %s' % (binascii.hexlify(out_buf),))
return b'E' return (b'E', False)
self.recv_buf = self.recv_buf[length:] self.recv_buf = self.recv_buf[length:]
self.has_recv_header = True self.has_recv_header = True
sendback = False
while len(self.recv_buf) > 2: while len(self.recv_buf) > 2:
length = struct.unpack('>H', self.recv_buf[:2])[0] length = struct.unpack('>H', self.recv_buf[:2])[0]
if length >= 8192 or length < 7: if length >= 8192 or length < 7:
@ -739,7 +740,7 @@ class auth_sha1_v2(verify_base):
self.recv_buf = b'' self.recv_buf = b''
if self.decrypt_packet_num == 0: if self.decrypt_packet_num == 0:
logging.info('auth_sha1_v2: over size') logging.info('auth_sha1_v2: over size')
return b'E' return (b'E', False)
else: else:
raise Exception('server_post_decrype data error') raise Exception('server_post_decrype data error')
if length > len(self.recv_buf): if length > len(self.recv_buf):
@ -750,7 +751,7 @@ class auth_sha1_v2(verify_base):
self.raw_trans = True self.raw_trans = True
self.recv_buf = b'' self.recv_buf = b''
if self.decrypt_packet_num == 0: if self.decrypt_packet_num == 0:
return b'E' return (b'E', False)
else: else:
raise Exception('server_post_decrype data uncorrect checksum') raise Exception('server_post_decrype data uncorrect checksum')
@ -761,9 +762,11 @@ class auth_sha1_v2(verify_base):
pos = struct.unpack('>H', self.recv_buf[3:5])[0] + 2 pos = struct.unpack('>H', self.recv_buf[3:5])[0] + 2
out_buf += self.recv_buf[pos:length - 4] out_buf += self.recv_buf[pos:length - 4]
self.recv_buf = self.recv_buf[length:] self.recv_buf = self.recv_buf[length:]
if pos == length - 4:
sendback = True
if out_buf: if out_buf:
self.server_info.data.update(self.client_id, self.connection_id) self.server_info.data.update(self.client_id, self.connection_id)
self.decrypt_packet_num += 1 self.decrypt_packet_num += 1
return out_buf return (out_buf, sendback)

2
shadowsocks/obfsplugin/plain.py
View File

@ -67,7 +67,7 @@ class plain(object):
return (buf, True, False) return (buf, True, False)
def server_post_decrypt(self, buf): def server_post_decrypt(self, buf):
return buf return (buf, False)
def client_udp_pre_encrypt(self, buf): def client_udp_pre_encrypt(self, buf):
return buf return buf

26
shadowsocks/obfsplugin/verify.py
View File

@ -151,7 +151,7 @@ class verify_simple(verify_base):
def server_post_decrypt(self, buf): def server_post_decrypt(self, buf):
if self.raw_trans: if self.raw_trans:
return buf return (buf, False)
self.recv_buf += buf self.recv_buf += buf
out_buf = b'' out_buf = b''
while len(self.recv_buf) > 2: while len(self.recv_buf) > 2:
@ -160,7 +160,7 @@ class verify_simple(verify_base):
self.raw_trans = True self.raw_trans = True
self.recv_buf = b'' self.recv_buf = b''
if self.decrypt_packet_num == 0: if self.decrypt_packet_num == 0:
return b'E' return (b'E', False)
else: else:
raise Exception('server_post_decrype data error') raise Exception('server_post_decrype data error')
if length > len(self.recv_buf): if length > len(self.recv_buf):
@ -170,7 +170,7 @@ class verify_simple(verify_base):
self.raw_trans = True self.raw_trans = True
self.recv_buf = b'' self.recv_buf = b''
if self.decrypt_packet_num == 0: if self.decrypt_packet_num == 0:
return b'E' return (b'E', False)
else: else:
raise Exception('server_post_decrype data uncorrect CRC32') raise Exception('server_post_decrype data uncorrect CRC32')
@ -180,7 +180,7 @@ class verify_simple(verify_base):
if out_buf: if out_buf:
self.decrypt_packet_num += 1 self.decrypt_packet_num += 1
return out_buf return (out_buf, False)
class verify_deflate(verify_base): class verify_deflate(verify_base):
def __init__(self, method): def __init__(self, method):
@ -236,7 +236,7 @@ class verify_deflate(verify_base):
def server_post_decrypt(self, buf): def server_post_decrypt(self, buf):
if self.raw_trans: if self.raw_trans:
return buf return (buf, False)
self.recv_buf += buf self.recv_buf += buf
out_buf = b'' out_buf = b''
while len(self.recv_buf) > 2: while len(self.recv_buf) > 2:
@ -256,7 +256,7 @@ class verify_deflate(verify_base):
if out_buf: if out_buf:
self.decrypt_packet_num += 1 self.decrypt_packet_num += 1
return out_buf return (out_buf, False)
class verify_sha1(verify_base): class verify_sha1(verify_base):
def __init__(self, method): def __init__(self, method):
@ -303,26 +303,26 @@ class verify_sha1(verify_base):
def server_post_decrypt(self, buf): def server_post_decrypt(self, buf):
if self.raw_trans: if self.raw_trans:
return buf return (buf, False)
self.recv_buf += buf self.recv_buf += buf
out_buf = b'' out_buf = b''
if not self.has_recv_header: if not self.has_recv_header:
if len(self.recv_buf) < 2: if len(self.recv_buf) < 2:
return b'' return (b'', False)
if (ord(self.recv_buf[0]) & 0x10) != 0x10: if (ord(self.recv_buf[0]) & 0x10) != 0x10:
if self.method == 'verify_sha1': if self.method == 'verify_sha1':
logging.error('Not One-time authentication header') logging.error('Not One-time authentication header')
return b'E' return (b'E', False)
else: else:
self.raw_trans = True self.raw_trans = True
return self.recv_buf return (self.recv_buf, False)
head_size = self.get_head_size(self.recv_buf, 30) head_size = self.get_head_size(self.recv_buf, 30)
if len(self.recv_buf) < head_size + 10: if len(self.recv_buf) < head_size + 10:
return b'' return (b'', False)
sha1data = hmac.new(self.server_info.recv_iv + self.server_info.key, self.recv_buf[:head_size], hashlib.sha1).digest()[:10] sha1data = hmac.new(self.server_info.recv_iv + self.server_info.key, self.recv_buf[:head_size], hashlib.sha1).digest()[:10]
if sha1data != self.recv_buf[head_size:head_size + 10]: if sha1data != self.recv_buf[head_size:head_size + 10]:
logging.error('server_post_decrype data uncorrect auth HMAC-SHA1') logging.error('server_post_decrype data uncorrect auth HMAC-SHA1')
return b'E' return (b'E', False)
out_buf = to_bytes(chr(ord(self.recv_buf[0]) & 0xEF)) + self.recv_buf[1:head_size] out_buf = to_bytes(chr(ord(self.recv_buf[0]) & 0xEF)) + self.recv_buf[1:head_size]
self.recv_buf = self.recv_buf[head_size + 10:] self.recv_buf = self.recv_buf[head_size + 10:]
self.has_recv_header = True self.has_recv_header = True
@ -340,7 +340,7 @@ class verify_sha1(verify_base):
out_buf += data out_buf += data
self.recv_buf = self.recv_buf[length:] self.recv_buf = self.recv_buf[length:]
return out_buf return (out_buf, False)
def client_udp_pre_encrypt(self, buf): def client_udp_pre_encrypt(self, buf):
ret = self.pack_auth_data(buf) ret = self.pack_auth_data(buf)

26
shadowsocks/tcprelay.py
View File

@ -364,7 +364,7 @@ class TCPRelayHandler(object):
return (host_post, 80) return (host_post, 80)
def _handel_protocol_error(self, client_address, ogn_data): def _handel_protocol_error(self, client_address, ogn_data):
logging.warn("Protocol ERROR, TCP ogn data %s from %s:%d" % (binascii.hexlify(ogn_data), client_address[0], client_address[1])) logging.warn("Protocol ERROR, TCP ogn data %s from %s:%d via port %d" % (binascii.hexlify(ogn_data), client_address[0], client_address[1], self._server._listen_port))
self._encrypt_correct = False self._encrypt_correct = False
#create redirect or disconnect by hash code #create redirect or disconnect by hash code
host, port = self._get_redirect_host(client_address, ogn_data) host, port = self._get_redirect_host(client_address, ogn_data)
@ -518,12 +518,17 @@ class TCPRelayHandler(object):
if not self._remote_udp: if not self._remote_udp:
if self._forbidden_iplist: if self._forbidden_iplist:
if common.to_str(sa[0]) in self._forbidden_iplist: if common.to_str(sa[0]) in self._forbidden_iplist:
if self._remote_address:
raise Exception('IP %s is in forbidden list, when connect to %s:%d via port %d' %
(common.to_str(sa[0]), self._remote_address[0], self._remote_address[1], self._server._listen_port))
raise Exception('IP %s is in forbidden list, reject' % raise Exception('IP %s is in forbidden list, reject' %
common.to_str(sa[0])) common.to_str(sa[0]))
if self._forbidden_portset: if self._forbidden_portset:
if sa[1] in self._forbidden_portset: if sa[1] in self._forbidden_portset:
raise Exception('Port %d is in forbidden list, reject' % if self._remote_address:
sa[1]) raise Exception('Port %d is in forbidden list, when connect to %s:%d via port %d' %
(sa[1], self._remote_address[0], self._remote_address[1], self._server._listen_port))
raise Exception('Port %d is in forbidden list, reject' % sa[1])
remote_sock = socket.socket(af, socktype, proto) remote_sock = socket.socket(af, socktype, proto)
self._remote_sock = remote_sock self._remote_sock = remote_sock
self._fd_to_handlers[remote_sock.fileno()] = self self._fd_to_handlers[remote_sock.fileno()] = self
@ -661,21 +666,20 @@ class TCPRelayHandler(object):
else: else:
data = obfs_decode[0] data = obfs_decode[0]
try: try:
newdata = self._protocol.server_post_decrypt(data) data, sendback = self._protocol.server_post_decrypt(data)
'''if data and not newdata: if sendback:
data = self._protocol.server_pre_encrypt(data) backdata = self._protocol.server_pre_encrypt('')
data = self._encryptor.encrypt(data) backdata = self._encryptor.encrypt(backdata)
data = self._obfs.server_encode(data) backdata = self._obfs.server_encode(backdata)
try: try:
self._write_to_sock(data, self._local_sock) self._write_to_sock(backdata, self._local_sock)
except Exception as e: except Exception as e:
shell.print_exception(e) shell.print_exception(e)
if self._config['verbose']: if self._config['verbose']:
traceback.print_exc() traceback.print_exc()
logging.error("exception from %s:%d" % (self._client_address[0], self._client_address[1])) logging.error("exception from %s:%d" % (self._client_address[0], self._client_address[1]))
self.destroy() self.destroy()
return''' return
data = newdata
except Exception as e: except Exception as e:
shell.print_exception(e) shell.print_exception(e)
logging.error("exception from %s:%d" % (self._client_address[0], self._client_address[1])) logging.error("exception from %s:%d" % (self._client_address[0], self._client_address[1]))

Write Preview
Loading…
Cancel
Save