[3.9] Raise TypeError if SSLSocket is passed to asyncio transport-based methods (GH-31442) (GH-31444)

(cherry picked from commit 1f9d4c9)

Co-authored-by: Andrew Svetlov <[email protected]>

Author: asvetlov

Lib/asyncio/base_events.py

@@ -202,6 +202,11 @@ def _set_nodelay(sock):
         pass
 
 
+def _check_ssl_socket(sock):
+    if ssl is not None and isinstance(sock, ssl.SSLSocket):
+        raise TypeError("Socket cannot be of type SSLSocket")
+
+
 class _SendfileFallbackProtocol(protocols.Protocol):
     def __init__(self, transp):
         if not isinstance(transp, transports._FlowControlMixin):
@@ -864,6 +869,7 @@ async def sock_sendfile(self, sock, file, offset=0, count=None,
                             *, fallback=True):
         if self._debug and sock.gettimeout() != 0:
             raise ValueError("the socket must be non-blocking")
+        _check_ssl_socket(sock)
         self._check_sendfile_params(sock, file, offset, count)
         try:
             return await self._sock_sendfile_native(sock, file,
@@ -1005,6 +1011,9 @@ async def create_connection(
             raise ValueError(
                 'ssl_handshake_timeout is only meaningful with ssl')
 
+        if sock is not None:
+            _check_ssl_socket(sock)
+
         if happy_eyeballs_delay is not None and interleave is None:
             # If using happy eyeballs, default to interleave addresses by family
             interleave = 1
@@ -1438,6 +1447,9 @@ async def create_server(
             raise ValueError(
                 'ssl_handshake_timeout is only meaningful with ssl')
 
+        if sock is not None:
+            _check_ssl_socket(sock)
+
         if host is not None or port is not None:
             if sock is not None:
                 raise ValueError(
@@ -1540,6 +1552,9 @@ async def connect_accepted_socket(
             raise ValueError(
                 'ssl_handshake_timeout is only meaningful with ssl')
 
+        if sock is not None:
+            _check_ssl_socket(sock)
+
         transport, protocol = await self._create_connection_transport(
             sock, protocol_factory, ssl, '', server_side=True,
             ssl_handshake_timeout=ssl_handshake_timeout)

Lib/asyncio/selector_events.py

@@ -40,11 +40,6 @@ def _test_selector_event(selector, fd, event):
         return bool(key.events & event)
 
 
-def _check_ssl_socket(sock):
-    if ssl is not None and isinstance(sock, ssl.SSLSocket):
-        raise TypeError("Socket cannot be of type SSLSocket")
-
-
 class BaseSelectorEventLoop(base_events.BaseEventLoop):
     """Selector event loop.
 
@@ -357,7 +352,7 @@ async def sock_recv(self, sock, n):
         The maximum amount of data to be received at once is specified by
         nbytes.
         """
-        _check_ssl_socket(sock)
+        base_events._check_ssl_socket(sock)
         if self._debug and sock.gettimeout() != 0:
             raise ValueError("the socket must be non-blocking")
         try:
@@ -398,7 +393,7 @@ async def sock_recv_into(self, sock, buf):
         The received data is written into *buf* (a writable buffer).
         The return value is the number of bytes written.
         """
-        _check_ssl_socket(sock)
+        base_events._check_ssl_socket(sock)
         if self._debug and sock.gettimeout() != 0:
             raise ValueError("the socket must be non-blocking")
         try:
@@ -439,7 +434,7 @@ async def sock_sendall(self, sock, data):
         raised, and there is no way to determine how much data, if any, was
         successfully processed by the receiving end of the connection.
         """
-        _check_ssl_socket(sock)
+        base_events._check_ssl_socket(sock)
         if self._debug and sock.gettimeout() != 0:
             raise ValueError("the socket must be non-blocking")
         try:
@@ -488,7 +483,7 @@ async def sock_connect(self, sock, address):
 
         This method is a coroutine.
         """
-        _check_ssl_socket(sock)
+        base_events._check_ssl_socket(sock)
         if self._debug and sock.gettimeout() != 0:
             raise ValueError("the socket must be non-blocking")
 
@@ -553,7 +548,7 @@ async def sock_accept(self, sock):
         object usable to send and receive data on the connection, and address
         is the address bound to the socket on the other end of the connection.
         """
-        _check_ssl_socket(sock)
+        base_events._check_ssl_socket(sock)
         if self._debug and sock.gettimeout() != 0:
             raise ValueError("the socket must be non-blocking")
         fut = self.create_future()

Misc/NEWS.d/next/Library/2022-02-20-12-59-46.bpo-46252.KG1SqA.rst

@@ -0,0 +1,2 @@
+Raise :exc:`TypeError` if :class:`ssl.SSLSocket` is passed to
+transport-based APIs.