mirror of
https://gitee.com/fantix/kloop.git
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Almost working PoC
This commit is contained in:
Fantix King
parent
97f02d40bc
commit
9fc44a51c8
7 changed files with 180 additions and 71 deletions
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@ -31,6 +31,16 @@ cdef extern from "sys/socket.h" nogil:
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size_t msg_controllen # ancillary data buffer len
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int msg_flags # flags on received message
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struct cmsghdr:
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socklen_t cmsg_len # data byte count, including header
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int cmsg_level # originating protocol
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int cmsg_type # protocol-specific type
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size_t CMSG_LEN(size_t length)
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cmsghdr* CMSG_FIRSTHDR(msghdr* msgh)
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unsigned char* CMSG_DATA(cmsghdr* cmsg)
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size_t CMSG_SPACE(size_t length)
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cdef extern from "arpa/inet.h" nogil:
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int inet_pton(int af, char* src, void* dst)
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@ -32,6 +32,8 @@ cdef extern from "linux/tcp.h" nogil:
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cdef extern from "linux/tls.h" nogil:
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int TLS_GET_RECORD_TYPE
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__u16 TLS_CIPHER_AES_GCM_256
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int TLS_CIPHER_AES_GCM_256_IV_SIZE
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int TLS_CIPHER_AES_GCM_256_SALT_SIZE
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@ -23,6 +23,16 @@ cdef extern from "openssl/ssl.h" nogil:
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SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(SSL_CTX* ctx)
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SSL_CTX* SSL_get_SSL_CTX(SSL* ssl)
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ctypedef enum OSSL_HANDSHAKE_STATE:
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pass
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OSSL_HANDSHAKE_STATE SSL_get_state(const SSL *ssl);
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unsigned int SSL3_RT_CHANGE_CIPHER_SPEC
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unsigned int SSL3_RT_ALERT
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unsigned int SSL3_RT_HANDSHAKE
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unsigned int SSL3_RT_APPLICATION_DATA
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cdef extern from "includes/ssl.h" nogil:
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ctypedef struct PySSLSocket:
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@ -11,6 +11,7 @@
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import socket
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import hmac
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import hashlib
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import struct
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from ssl import SSLWantReadError
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from cpython cimport PyErr_SetFromErrno
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@ -61,20 +62,14 @@ def do_handshake_capturing_secrets(sslobj):
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ssl.SSL_CTX_set_keylog_callback(ctx, orig_cb)
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def hkdf_expand(pseudo_random_key, info=b"", length=32, hash=hashlib.sha384):
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def hkdf_expand(pseudo_random_key, label, length, hash_method=hashlib.sha384):
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'''
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Expand `pseudo_random_key` and `info` into a key of length `bytes` using
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HKDF's expand function based on HMAC with the provided hash (default
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SHA-512). See the HKDF draft RFC and paper for usage notes.
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'''
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# info_in = info
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# info = b'\0' + struct.pack("H", len(info)) + info + b'\0'
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# print(f'hkdf_expand info_in= label={info.hex()}')
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hash_len = hash().digest_size
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length = int(length)
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if length > 255 * hash_len:
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raise Exception("Cannot expand to more than 255 * %d = %d bytes using the specified hash function" % \
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(hash_len, 255 * hash_len))
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info = struct.pack("!HB", length, len(label)) + label + b'\0'
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hash_len = hash_method().digest_size
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blocks_needed = length // hash_len + (0 if length % hash_len == 0 else 1) # ceil
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okm = b""
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output_block = b""
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@ -82,7 +77,7 @@ def hkdf_expand(pseudo_random_key, info=b"", length=32, hash=hashlib.sha384):
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output_block = hmac.new(
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pseudo_random_key,
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(output_block + info + bytearray((counter + 1,))),
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hash,
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hash_method,
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).digest()
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okm += output_block
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return okm[:length]
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@ -95,6 +90,12 @@ def enable_ulp(sock):
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return
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def get_state(sslobj):
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cdef:
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ssl.SSL* s = (<ssl.PySSLSocket*>sslobj._sslobj).ssl
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print(ssl.SSL_get_state(s))
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def upgrade_aes_gcm_256(sslobj, sock, secret, sending):
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cdef:
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ssl.SSL* s = (<ssl.PySSLSocket*>sslobj._sslobj).ssl
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@ -108,7 +109,7 @@ def upgrade_aes_gcm_256(sslobj, sock, secret, sending):
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# s->rlayer->read_sequence
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seq = <char*>((<void*>s) + 6104)
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# print(sslobj.cipher())
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# print(sslobj.cipher())
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string.memset(&crypto_info, 0, sizeof(crypto_info))
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crypto_info.info.cipher_type = linux.TLS_CIPHER_AES_GCM_256
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@ -116,7 +117,7 @@ def upgrade_aes_gcm_256(sslobj, sock, secret, sending):
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key = hkdf_expand(
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secret,
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b'\x00 \ttls13 key\x00',
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b'tls13 key',
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linux.TLS_CIPHER_AES_GCM_256_KEY_SIZE,
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)
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string.memcpy(
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@ -131,7 +132,7 @@ def upgrade_aes_gcm_256(sslobj, sock, secret, sending):
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)
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iv = hkdf_expand(
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secret,
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b'\x00\x0c\x08tls13 iv\x00',
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b'tls13 iv',
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linux.TLS_CIPHER_AES_GCM_256_IV_SIZE +
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linux.TLS_CIPHER_AES_GCM_256_SALT_SIZE,
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)
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@ -13,6 +13,7 @@ import asyncio.futures
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import asyncio.trsock
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import asyncio.transports
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import contextvars
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import errno
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import socket
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import ssl
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@ -98,11 +99,14 @@ class KLoopSocketTransport(
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self._recv_buffer_factory = protocol.get_buffer
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else:
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self._read_ready_cb = self._read_ready__data_received
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self._recv_buffer = bytearray(256 * 1024)
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self._recv_buffer = bytearray(64 * 1024 * 1024)
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self._recv_buffer_factory = lambda _hint: self._recv_buffer
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self._protocol = protocol
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def _read(self):
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# print("RecvMsgWork")
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if self._read_paused:
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return
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self._loop._selector.submit(
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uring.RecvMsgWork(
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self._sock.fileno(),
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@ -111,7 +115,7 @@ class KLoopSocketTransport(
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)
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)
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def _read_ready__buffer_updated(self, res):
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def _read_ready__buffer_updated(self, res, app_data):
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if res < 0:
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raise IOError
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elif res == 0:
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@ -124,20 +128,29 @@ class KLoopSocketTransport(
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if not self._closing:
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self._read()
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def _read_ready__data_received(self, res):
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def _read_ready__data_received(self, res, app_data):
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print("_read_ready__data_received", res)
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if res < 0:
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raise IOError(f"{res}")
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if abs(res) == errno.EAGAIN:
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print('EAGAIN')
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self._read()
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else:
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raise IOError(f"{res}")
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elif res == 0:
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self._protocol.eof_received()
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else:
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try:
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# print(f"data received: {res}")
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self._protocol.data_received(self._recv_buffer[:res])
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print(f"data received: {res}")
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data = bytes(self._recv_buffer[:res])
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# print(f"data received: {data}")
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if app_data:
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self._protocol.data_received(data)
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finally:
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if not self._closing:
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self._read()
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def _write_done(self, res):
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# print("_write_done")
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self._current_work = None
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if res < 0:
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# TODO: force close transport
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@ -153,6 +166,7 @@ class KLoopSocketTransport(
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self._sock.fileno(), self._buffers, self._write_done
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)
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self._loop._selector.submit(self._current_work)
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# print("more SendWork")
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self._buffers = []
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elif self._closing:
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self._loop.call_soon(self._call_connection_lost, None)
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@ -168,6 +182,7 @@ class KLoopSocketTransport(
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self._sock.fileno(), data, self._write_done
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)
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self._loop._selector.submit(self._current_work)
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# print("SendWork")
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else:
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self._buffers.append(data)
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self._maybe_pause_protocol()
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@ -233,45 +248,87 @@ class KLoopSSLHandshakeProtocol(asyncio.Protocol):
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self._handshake()
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def _handshake(self):
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ktls.get_state(self._sslobj)
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success, secrets = ktls.do_handshake_capturing_secrets(self._sslobj)
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self._secrets.update(secrets)
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if success:
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# print("handshake done")
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if self._handshaking:
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print(self._sslobj.cipher())
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ktls.get_state(self._sslobj)
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self._handshaking = False
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try:
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data = self._sslobj.read(64 * 1024)
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except ssl.SSLWantReadError:
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data = None
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if data:
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while True:
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try:
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data += self._sslobj.read(64 * 1024)
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except ssl.SSLWantReadError:
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break
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print("try read", data)
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self._transport._upgrade_ktls_read(
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self._sslobj,
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self._secrets["SERVER_TRAFFIC_SECRET_0"],
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data,
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)
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if data := self._outgoing.read():
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print("last message")
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self._transport.write(data)
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self._transport._write_waiter = self._after_last_write
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# self._transport._write_waiter = lambda: self._transport._loop.call_later(1, self._after_last_write)
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self._transport.pause_reading()
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else:
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self._after_last_write()
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# else:
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# try:
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# data = self._sslobj.read(16384)
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# except ssl.SSLWantReadError:
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# data = None
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# self._transport._upgrade_ktls_read(
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# self._sslobj,
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# self._secrets["SERVER_TRAFFIC_SECRET_0"],
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# data,
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# )
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else:
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assert False
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# try:
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# data = self._sslobj.read(64 * 1024)
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# except ssl.SSLWantReadError:
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# data = None
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# if data:
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# while True:
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# try:
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# data += self._sslobj.read(64 * 1024)
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# except ssl.SSLWantReadError:
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# break
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# print("try read", data)
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# # ktls.get_state(self._sslobj)
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# self._after_last_write()
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# self._transport._upgrade_ktls_read(
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# self._sslobj,
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# self._secrets["SERVER_TRAFFIC_SECRET_0"],
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# data,
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# )
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else:
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# print("SSLWantReadError")
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if data := self._outgoing.read():
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self._transport.write(data)
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def _after_last_write(self):
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try:
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data = self._sslobj.read(16384)
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except ssl.SSLWantReadError:
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data = None
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print("_after_last_write")
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ktls.get_state(self._sslobj)
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# try:
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# data = self._sslobj.read(64 * 1024)
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# except ssl.SSLWantReadError:
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# data = None
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# if data:
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# while True:
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# try:
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# data += self._sslobj.read(64 * 1024)
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# except ssl.SSLWantReadError:
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# break
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# print("try read", data)
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self._transport._upgrade_ktls_write(
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self._sslobj,
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self._secrets["CLIENT_TRAFFIC_SECRET_0"],
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)
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self._transport._upgrade_ktls_read(
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self._sslobj,
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self._secrets["SERVER_TRAFFIC_SECRET_0"],
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data,
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)
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# self._transport._upgrade_ktls_read(
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# self._sslobj,
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# self._secrets["SERVER_TRAFFIC_SECRET_0"],
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# data,
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# )
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self._transport.resume_reading()
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@ -303,7 +360,9 @@ class KLoopSSLTransport(KLoopSocketTransport):
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self._waiter = waiter
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def _upgrade_ktls_write(self, sslobj, secret):
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print("_upgrade_ktls_write")
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ktls.upgrade_aes_gcm_256(sslobj, self._sock, secret, True)
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self.set_protocol(self._app_protocol)
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self._loop.call_soon(self._app_protocol.connection_made, self)
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if self._waiter is not None:
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self._loop.call_soon(
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@ -313,13 +372,14 @@ class KLoopSSLTransport(KLoopSocketTransport):
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)
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def _upgrade_ktls_read(self, sslobj, secret, data):
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print("_upgrade_ktls_read")
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ktls.upgrade_aes_gcm_256(sslobj, self._sock, secret, False)
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self.set_protocol(self._app_protocol)
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if data is not None:
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if data:
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self._app_protocol.data_received(data)
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else:
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self._app_protocol.eof_received()
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# self.set_protocol(self._app_protocol)
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# if data is not None:
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# if data:
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# self._app_protocol.data_received(data)
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# else:
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# self._app_protocol.eof_received()
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class KLoop(asyncio.BaseEventLoop):
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@ -344,6 +404,7 @@ class KLoop(asyncio.BaseEventLoop):
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def _make_socket_transport(
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self, sock, protocol, waiter=None, *, extra=None, server=None
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):
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sock.setblocking(True)
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return KLoopSocketTransport(
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self, sock, protocol, waiter, extra, server
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)
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@ -16,7 +16,7 @@ from cpython cimport PyMem_RawMalloc, PyMem_RawFree
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from libc cimport errno, string
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from posix cimport mman
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from .includes cimport barrier, libc, linux
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from .includes cimport barrier, libc, linux, ssl
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cdef linux.__u32 SIG_SIZE = libc._NSIG // 8
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@ -187,6 +187,7 @@ cdef class Ring:
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def submit(self, Work work):
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cdef linux.io_uring_sqe* sqe = self.sq.next_sqe()
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# print(f"submit: {work}")
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work.submit(sqe)
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def select(self, timeout):
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@ -225,19 +226,22 @@ cdef class Ring:
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if need_enter:
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arg.sigmask = 0
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arg.sigmask_sz = SIG_SIZE
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print(f"SYS_io_uring_enter(submit={submit}, wait_nr={wait_nr}, "
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f"flags={flags:b}, timeout={timeout})")
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ret = libc.syscall(
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libc.SYS_io_uring_enter,
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self.enter_fd,
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submit,
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wait_nr,
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flags,
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&arg,
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sizeof(arg),
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)
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# print(f"SYS_io_uring_enter(submit={submit}, wait_nr={wait_nr}, "
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# f"flags={flags:b}, timeout={timeout})")
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with nogil:
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ret = libc.syscall(
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libc.SYS_io_uring_enter,
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self.enter_fd,
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submit,
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wait_nr,
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flags,
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&arg,
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sizeof(arg),
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)
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if ret < 0:
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if errno.errno != errno.ETIME:
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print(f"SYS_io_uring_enter(submit={submit}, wait_nr={wait_nr}, "
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f"flags={flags:b}, timeout={timeout})")
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PyErr_SetFromErrno(IOError)
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return
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@ -263,7 +267,7 @@ cdef class Work:
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int op,
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linux.io_uring_sqe * sqe,
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int fd,
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void * addr,
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void* addr,
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unsigned len,
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linux.__u64 offset,
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):
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|
@ -386,6 +390,7 @@ cdef class RecvWork(Work):
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cdef class RecvMsgWork(Work):
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def __init__(self, int fd, buffers, callback):
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cdef size_t size = libc.CMSG_SPACE(sizeof(unsigned char))
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self.fd = fd
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self.buffers = buffers
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self.callback = callback
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@ -398,9 +403,9 @@ cdef class RecvMsgWork(Work):
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for i, buf in enumerate(buffers):
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self.msg.msg_iov[i].iov_base = <char*>buf
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self.msg.msg_iov[i].iov_len = len(buf)
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self.control_msg = bytearray(256)
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self.control_msg = bytearray(size)
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self.msg.msg_control = <char*>self.control_msg
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self.msg.msg_controllen = 256
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self.msg.msg_controllen = size
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def __dealloc__(self):
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if self.msg.msg_iov != NULL:
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@ -410,11 +415,24 @@ cdef class RecvMsgWork(Work):
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self._submit(linux.IORING_OP_RECVMSG, sqe, self.fd, &self.msg, 1, 0)
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def complete(self):
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if self.res < 0:
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errno.errno = abs(self.res)
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PyErr_SetFromErrno(IOError)
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return
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# if self.msg.msg_controllen:
|
||||
# print('control_msg:', self.control_msg[:self.msg.msg_controllen])
|
||||
# print('flags:', self.msg.msg_flags)
|
||||
self.callback(self.res)
|
||||
cdef:
|
||||
libc.cmsghdr* cmsg
|
||||
unsigned char* cmsg_data
|
||||
unsigned char record_type
|
||||
# if self.res < 0:
|
||||
# errno.errno = abs(self.res)
|
||||
# PyErr_SetFromErrno(IOError)
|
||||
# return
|
||||
app_data = True
|
||||
if self.msg.msg_controllen:
|
||||
print('msg_controllen:', self.msg.msg_controllen)
|
||||
cmsg = libc.CMSG_FIRSTHDR(&self.msg)
|
||||
if cmsg.cmsg_level == libc.SOL_TLS and cmsg.cmsg_type == linux.TLS_GET_RECORD_TYPE:
|
||||
cmsg_data = libc.CMSG_DATA(cmsg)
|
||||
record_type = (<unsigned char*>cmsg_data)[0]
|
||||
if record_type != ssl.SSL3_RT_APPLICATION_DATA:
|
||||
app_data = False
|
||||
print(f'cmsg.len={cmsg.cmsg_len}, cmsg.level={cmsg.cmsg_level}, cmsg.type={cmsg.cmsg_type}')
|
||||
print(f'record type: {record_type}')
|
||||
print('flags:', self.msg.msg_flags)
|
||||
self.callback(self.res, app_data)
|
||||
|
|
|
|||
|
|
@ -38,14 +38,21 @@ class TestLoop(unittest.TestCase):
|
|||
|
||||
def test_connect(self):
|
||||
ctx = ssl.create_default_context(ssl.Purpose.SERVER_AUTH)
|
||||
ctx.check_hostname = False
|
||||
ctx.verify_mode = ssl.CERT_NONE
|
||||
ctx.minimum_version = ssl.TLSVersion.TLSv1_3
|
||||
host = "www.google.com"
|
||||
r, w = self.loop.run_until_complete(
|
||||
asyncio.open_connection("www.google.com", 443, ssl=ctx)
|
||||
# asyncio.open_connection("127.0.0.1", 8080, ssl=ctx)
|
||||
asyncio.open_connection(host, 443, ssl=ctx)
|
||||
)
|
||||
w.write(b"GET / HTTP/1.1\r\n"
|
||||
b"Host: www.google.com\r\n"
|
||||
self.loop.run_until_complete(asyncio.sleep(1))
|
||||
print('send request')
|
||||
w.write(b"GET / HTTP/1.1\r\n" +
|
||||
f"Host: {host}\r\n".encode("ISO-8859-1") +
|
||||
b"Connection: close\r\n"
|
||||
b"\r\n")
|
||||
while line := self.loop.run_until_complete(r.readline()):
|
||||
while line := self.loop.run_until_complete(r.read()):
|
||||
print(line)
|
||||
w.close()
|
||||
self.loop.run_until_complete(w.wait_closed())
|
||||
|
|
|
|||
Loading…
Reference in a new issue