RE: [Jython-users] SSL connections in Jython

[brian z. <bz...@zi...>]

Tyson,

Here's a snippet I have in my local socket.py to facilitate SSL:

************************************************************************
*********************

try:
    import javax.net.ssl.SSLSocketFactory

    provider = com.sun.net.ssl.internal.ssl.Provider()
    java.security.Security.addProvider(provider)

    sslerror = IOError

    class SSLObject:
        def __init__(self, sock):
            self.sock = sock
            self.istream = self.sock.getInputStream()
            self.ostream = self.sock.getOutputStream()

        def read(self, n=0):
            assert self.sock
            if n:
                data = jarray.zeros(n, 'b')
                m = self.istream.read(data)
                if m <= 0:
                    return ""
                if m < n:
                    data = data[:m]
                return data.tostring()
            else:
                cnt = 0
                data = jarray.zeros(128, 'b')
                while 1:
                    m = self.istream.read()
                    if m <= 0:
                        break
                    size = len(data)
                    if cnt >= size:
                        tmp = data
                        data = jarray.zeros(size + 128, 'b')
                        java.lang.System.arraycopy(tmp, 0, data, 0,
size)
                    data[cnt] = m
                    cnt += 1
                if cnt == 0:
                    return ""
                else:
                    return data[:cnt].tostring()

        def write(self, s):
            assert self.sock
            try:
                n = len(s)
                self.ostream.write(s)
                return n
            except java.net.SocketException, e:
                #print "tried to send [%s]" % (s)
                #raise error(errno.EINTR, e.getMessage())
                raise
            except java.io.IOException, e:
                #raise error(errno.EINTR, e.getMessage())
                raise

    def ssl(socket, keyfile=None, certfile=None):
        assert not socket.server
        try:
            factory = javax.net.ssl.SSLSocketFactory.getDefault()
            hostname, port = socket.getpeername()
            return SSLObject(factory.createSocket(socket.sock, hostname,
port, 1))
        except java.net.SocketException, e:
            raise error(0, e.getMessage())

except:
    pass

************************************************************************
*********************

It seems to work for connecting to https://sf.net and grabbing the page.
It's not all that thoroughly tested so you might find some bugs and
such.  Let me know if you have any success with it.  I am currently
working on an implementation of select and non-blocking sockets but I've
hit a couple of stumbling blocks, it works for the most part though.  I
think I might release it soon anyway and I'd add SSL support (written in
Java) using the above as a prototype, so any feedback would be great!

The source for zxSocket is available through CVS at
http://sf.net/projects/zxpy; the project name is zxSocket.

The problem I'm having if anyone has read this far is with the
ByteBuffer->String conversion required by Jython.  If it's just textual
data then I have no problem, but I can't get it to work properly with
binary data, say downloading an image.  I'm no expert on this stuff so
if there are any please contact me.

thanks,

brian

> -----Original Message-----
> From: jyt...@li... 
> [mailto:jyt...@li...] On Behalf 
> Of tw...@3a...
> Sent: Monday, May 06, 2002 6:28 PM
> To: jyt...@li...
> Subject: [Jython-users] SSL connections in Jython
> 
> 
> I've searched the net for some answers, as well as the list 
> archives, and 
> haven't run across any discussions or howto's that cover 
> using SSL sockets inside Jython.  I sifted through the 
> httplib.py file and noticed references to socket.ssl, which 
> appears absent from socket.py source file 
> in 2.1.
> 
> So, my fallback is to install JSSE libs, create 
> URLConnections per their examples, and continue from there.  
> I thought I'd ask if anyone has experience using SSL libs in 
> Jython.  If not, no biggie...I'll see if I can't make some 
> mods to socket.py to support using ssl connections with 
> httplib.  I'd rather not port some of my code that's humming 
> nicely using 
> httplib.
> 
> -tyson
> 
> p.s.  I've been lurking on the lists for a while, and must 
> say I absolutely love Python/Jython.  We're using it 
> extensively here, embedding it in some EJB apps, building 
> command line apps with it, etc. The whole devel team here is 
> certainly "drinking the kool-aid". Jython/python is esp. nice 
> for us scheme/lisp fans who are used to having 
> power and flexibility, and frustrated by the many redundant 
> lines of code 
> you have to write in Java.
> 
> 
> 
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