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//proc/self/root/usr/share/doc/m2crypto-0.16/demo/ssl/echod_lib.py

"""Support routines for the various SSL 'echo' servers.

import SocketServer
from M2Crypto import SSL

def init_context(protocol, certfile, cafile, verify, verify_depth=10):
    ctx = SSL.Context(protocol)
    ctx.load_cert_chain(certfile)
    ctx.load_verify_locations(cafile)
    ctx.set_client_CA_list_from_file(cafile)    
    ctx.set_verify(verify, verify_depth)
    #ctx.set_allow_unknown_ca(1)
    ctx.set_session_id_ctx('echod')
    ctx.set_info_callback()
    return ctx

class ssl_echo_handler(SocketServer.BaseRequestHandler):

buffer = 'Ye Olde Echo Servre\r\n'

def handle(self):
        peer = self.request.get_peer_cert()
        if peer is not None:
            print 'Client CA        =', peer.get_issuer().O
            print 'Client Subject   =', peer.get_subject().CN
        x = self.request.write(self.buffer)
        while 1:
            try:
                buf = self.request.read()
                if not buf:
                    break
                self.request.write(buf) 
            except SSL.SSLError, what:
                if str(what) == 'unexpected eof':
                    break
                else:
                    raise

def finish(self):
        self.request.close()