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import sys
from rpython.rlib.rarithmetic import intmask
from pypy.interpreter.mixedmodule import MixedModule
from pypy.module._ssl import ssl_data

class Module(MixedModule):
    """Implementation module for SSL socket operations.
    See the socket module for documentation."""

    interpleveldefs = {
        '_test_decode_cert': 'interp_ssl._test_decode_cert',
        'txt2obj': 'interp_ssl.txt2obj',
        'nid2obj': 'interp_ssl.nid2obj',
        'get_default_verify_paths': 'interp_ssl.get_default_verify_paths',

        'SSLError': "interp_ssl.get_exception_class(space, 'w_sslerror')",
        'SSLZeroReturnError': "interp_ssl.get_exception_class(space, 'w_sslzeroreturnerror')",
        'SSLWantReadError': "interp_ssl.get_exception_class(space, 'w_sslwantreaderror')",
        'SSLWantWriteError': "interp_ssl.get_exception_class(space, 'w_sslwantwriteerror')",
        'SSLSyscallError': "interp_ssl.get_exception_class(space, 'w_sslsyscallerror')",
        'SSLEOFError': "interp_ssl.get_exception_class(space, 'w_ssleoferror')",

        '_SSLSocket': 'interp_ssl._SSLSocket',
        '_SSLContext': 'interp_ssl._SSLContext',
    }

    if sys.platform == 'win32':
        interpleveldefs['enum_certificates'] = 'interp_win32.enum_certificates_w'
        interpleveldefs['enum_crls'] = 'interp_win32.enum_crls_w'

    appleveldefs = {
    }

    @classmethod
    def buildloaders(cls):
        # init the SSL module
        from pypy.module._ssl.interp_ssl import constants, HAVE_OPENSSL_RAND

        for constant, value in constants.iteritems():
            if constant.startswith('OP_'):
                value = intmask(value)  # Convert to C long and wrap around.
            Module.interpleveldefs[constant] = "space.wrap(%r)" % (value,)

        if HAVE_OPENSSL_RAND:
            Module.interpleveldefs['RAND_add'] = "interp_ssl.RAND_add"
            Module.interpleveldefs['RAND_status'] = "interp_ssl.RAND_status"
            Module.interpleveldefs['RAND_egd'] = "interp_ssl.RAND_egd"

        for name, value in ssl_data.ALERT_DESCRIPTION_CODES.items():
            Module.interpleveldefs[name] = "space.wrap(%r)" % value

        super(Module, cls).buildloaders()

    def setup_after_space_initialization(self):
        """NOT_RPYTHON"""
        from pypy.module._ssl.interp_ssl import PWINFO_STORAGE
        PWINFO_STORAGE.clear()

    def startup(self, space):
        from rpython.rlib.ropenssl import init_ssl
        init_ssl()
        if space.config.objspace.usemodules.thread:
            from pypy.module._ssl.thread_lock import setup_ssl_threads
            setup_ssl_threads()