type enforcement in _ssl.sslwrap
in [Python]
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From: Eric Snow on 10 Aug 2010 13:40 ssl.SSLSocket.__init__ makes a call to _ssl.sslwrap (in the C module). That in turn makes a call to PyArg_ParseTuple, which casts the first arg of _ssl.sslwrap into a PySocketModule.Sock_Type object. My problem is that I am trying to pass in an object that implements the Socket interface, but does not inherit from _socket.socket, like you do with file-like objects. Is there a way to make this work, or is the PyArg_ParseTuple call going to stop me. Would I need to have _ssl.sslwrap do something differently with its args? -eric
From: Steven D'Aprano on 11 Aug 2010 07:34 On Tue, 10 Aug 2010 10:40:54 -0700, Eric Snow wrote: > ssl.SSLSocket.__init__ makes a call to _ssl.sslwrap (in the C module). > That in turn makes a call to PyArg_ParseTuple, which casts the first arg > of _ssl.sslwrap into a PySocketModule.Sock_Type object. > > My problem is that I am trying to pass in an object that implements the > Socket interface, but does not inherit from _socket.socket, like you do > with file-like objects. Is there a way to make this work, or is the > PyArg_ParseTuple call going to stop me. I don't know. What happens when you try it? -- Steven
From: Eric Snow on 11 Aug 2010 12:12
On Aug 11, 5:34 am, Steven D'Aprano <st...(a)REMOVE-THIS- cybersource.com.au> wrote: > On Tue, 10 Aug 2010 10:40:54 -0700, Eric Snow wrote: > > ssl.SSLSocket.__init__ makes a call to _ssl.sslwrap (in the C module). > > That in turn makes a call to PyArg_ParseTuple, which casts the first arg > > of _ssl.sslwrap into a PySocketModule.Sock_Type object. > > > My problem is that I am trying to pass in an object that implements the > > Socket interface, but does not inherit from _socket.socket, like you do > > with file-like objects. Is there a way to make this work, or is the > > PyArg_ParseTuple call going to stop me. > > I don't know. What happens when you try it? > > -- > Steven When I pass my socket object in to ssl.wrap_socket I get the following exception: Traceback (most recent call last): File "<stdin>", line 1, in <module> ... File "/usr/local/lib/python2.7/ssl.py", line 342, in wrap_socket ciphers=ciphers) File "/usr/local/lib/python2.7/ssl.py", line 119, in __init__ ciphers) TypeError: must be _socket.socket, not ClientSocket I looked at what is going on there and found the call to _ssl.sslwrap. I tracked it down in the C source and found the call to PyArg_ParseTuple. -eric |