Changeset 75
- Timestamp:
- 12/16/14 23:06:14 (10 years ago)
- File:
-
- 1 edited
Legend:
- Unmodified
- Added
- Removed
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trunk/bin/bletchley-clonecertchain
r74 r75 54 54 55 55 56 def createClientContext( ):57 tlsClientContext = SSL.Context( SSL.SSLv3_METHOD)56 def createClientContext(method=SSL.SSLv3_METHOD): 57 tlsClientContext = SSL.Context(method) 58 58 tlsClientContext.set_verify(SSL.VERIFY_NONE, (lambda a,b,c,d,e: True)) 59 59 return tlsClientContext … … 61 61 62 62 def fetchCertificateChain(host, port): 63 serverSock = socket.socket() 64 serverSock.connect((host,port)) 65 63 protocols = [SSL.SSLv23_METHOD, SSL.TLSv1_METHOD, 64 SSL.TLSv1_1_METHOD, SSL.TLSv1_2_METHOD, 65 SSL.SSLv3_METHOD, SSL.SSLv2_METHOD] 66 66 67 chain = None 67 try: 68 server = SSL.Connection(createClientContext(), serverSock) 69 server.set_connect_state() 70 server.do_handshake() 71 except Exception as e: 72 sys.stderr.write("Exception during handshake with server: \n") 73 traceback.print_exc(file=sys.stderr) 74 sys.stderr.write("\nThis typically occurs when server rejects our " 75 "connection due to lack of a client certificate or" 76 " for similar reasons.\nAttempting to continue...\n\n") 77 78 return server.get_peer_cert_chain() 68 for p in protocols: 69 serverSock = socket.socket() 70 serverSock.connect((host,port)) 71 72 try: 73 server = SSL.Connection(createClientContext(p), serverSock) 74 server.set_connect_state() 75 server.do_handshake() 76 except Exception as e: 77 sys.stderr.write("Exception during handshake with server: \n") 78 traceback.print_exc(file=sys.stderr) 79 sys.stderr.write("\nThis could happen because the server requires " 80 "certain SSL/TLS versions or a client certificiate." 81 " Have no fear, we'll keep trying...\n\n") 82 83 chain = server.get_peer_cert_chain() 84 if chain: 85 return chain 86 87 return chain 79 88 80 89
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