update to fix leak in SSL code

Lib/ssl.py

@@ -80,6 +80,7 @@ from socket import getnameinfo as _getnameinfo
 from socket import error as socket_error
 from socket import dup as _dup
 import base64        # for DER-to-PEM translation
+import traceback
 
 class SSLSocket(socket):
 
@@ -94,16 +95,13 @@ class SSLSocket(socket):
                  family=AF_INET, type=SOCK_STREAM, proto=0, fileno=None,
                  suppress_ragged_eofs=True):
 
-        self._base = None
-
         if sock is not None:
-            # copied this code from socket.accept()
-            fd = sock.fileno()
-            nfd = _dup(fd)
-            socket.__init__(self, family=sock.family, type=sock.type,
-                            proto=sock.proto, fileno=nfd)
+            socket.__init__(self,
+                            family=sock.family,
+                            type=sock.type,
+                            proto=sock.proto,
+                            fileno=_dup(sock.fileno()))
             sock.close()
-            sock = None
         elif fileno is not None:
             socket.__init__(self, fileno=fileno)
         else:
@@ -136,10 +134,6 @@ class SSLSocket(socket):
                 self.close()
                 raise x
 
-        if sock and (self.fileno() != sock.fileno()):
-            self._base = sock
-        else:
-            self._base = None
         self.keyfile = keyfile
         self.certfile = certfile
         self.cert_reqs = cert_reqs
@@ -156,19 +150,23 @@ class SSLSocket(socket):
         # raise an exception here if you wish to check for spurious closes
         pass
 
-    def read(self, len=None, buffer=None):
+    def read(self, len=0, buffer=None):
         """Read up to LEN bytes and return them.
         Return zero-length string on EOF."""
 
         self._checkClosed()
         try:
             if buffer:
-                return self._sslobj.read(buffer, len)
+                v = self._sslobj.read(buffer, len)
             else:
-                return self._sslobj.read(len or 1024)
+                v = self._sslobj.read(len or 1024)
+            return v
         except SSLError as x:
             if x.args[0] == SSL_ERROR_EOF and self.suppress_ragged_eofs:
-                return b''
+                if buffer:
+                    return 0
+                else:
+                    return b''
             else:
                 raise
 
@@ -269,7 +267,6 @@ class SSLSocket(socket):
             while True:
                 try:
                     v = self.read(nbytes, buffer)
-                    sys.stdout.flush()
                     return v
                 except SSLError as x:
                     if x.args[0] == SSL_ERROR_WANT_READ:
@@ -302,9 +299,7 @@ class SSLSocket(socket):
     def _real_close(self):
         self._sslobj = None
         # self._closed = True
-        if self._base:
-            self._base.close()
-        socket.close(self)
+        socket._real_close(self)
 
     def do_handshake(self, block=False):
         """Perform a TLS/SSL handshake."""
@@ -329,8 +324,12 @@ class SSLSocket(socket):
         self._sslobj = _ssl.sslwrap(self, False, self.keyfile, self.certfile,
                                     self.cert_reqs, self.ssl_version,
                                     self.ca_certs)
-        if self.do_handshake_on_connect:
-            self.do_handshake()
+        try:
+            if self.do_handshake_on_connect:
+                self.do_handshake()
+        except:
+            self._sslobj = None
+            raise
 
     def accept(self):
         """Accepts a new connection from a remote client, and returns
@@ -348,10 +347,11 @@ class SSLSocket(socket):
                               self.do_handshake_on_connect),
                 addr)
 
-
     def __del__(self):
+        # sys.stderr.write("__del__ on %s\n" % repr(self))
         self._real_close()
 
+
 def wrap_socket(sock, keyfile=None, certfile=None,
                 server_side=False, cert_reqs=CERT_NONE,
                 ssl_version=PROTOCOL_SSLv23, ca_certs=None,