Function verbose_inspector

cscan.py:57–87

Describe the connection result in human-readable form.

(desc, result)

def verbose_inspector(desc, result):
    """Describe the connection result in human-readable form."""
    ret = "{0}:".format(desc)
    if any(isinstance(x, ServerHelloDone) for x in result):
        ch = next((x for x in result if isinstance(x, ClientHello)), None)
        sh = next((x for x in result if isinstance(x, ServerHello)), None)
        if sh and ch:
            if sh.cipher_suite not in ch.cipher_suites:
                ret += " FAILURE cipher suite mismatch"
                return ret
            name = CipherSuite.ietfNames[sh.cipher_suite] \
                if sh.cipher_suite in CipherSuite.ietfNames \
                else hex(sh.cipher_suite)
            ret += " ok: {0}, {1}".format(sh.server_version,
                                          name)
            return ret
    ret += " FAILURE "
    errors = []
    for msg in result:
        if isinstance(msg, ClientHello):
            continue
        # check if returned message supports custom formatting
        if msg.__class__.__format__ is not object.__format__:
            errors += ["{:vxm}".format(msg)]
        else:
            errors += [repr(msg)]
        # skip printing close errors after fatal alerts, they are expected
        if isinstance(msg, Alert) and msg.level == AlertLevel.fatal:
            break
    ret += "\n".join(errors)
    return ret

configs = {}