M2Crypto.SSL.Session — M2Crypto documentation

# Source code for M2Crypto.SSL.Session

    """SSL Session

    Copyright (c) 1999-2003 Ng Pheng Siong. All rights reserved."""

    __all__ = ['Session', 'load_session']

    from M2Crypto import BIO, Err, m2, util
    from M2Crypto.SSL import SSLError
    if util.py27plus:
        from typing import AnyStr  # noqa

    class Session:

        m2_ssl_session_free = m2.ssl_session_free

        def __init__(self, session, _pyfree=0):
            # type: (bytes, int) -> None
            assert session is not None
            self.session = session
            self._pyfree = _pyfree

        def __del__(self):
            # type: () -> None
            if getattr(self, '_pyfree', 0):
                self.m2_ssl_session_free(self.session)

        def _ptr(self):
            # type: () -> bytes
            return self.session

        def as_text(self):
            # type: () -> bytes
            buf = BIO.MemoryBuffer()
            m2.ssl_session_print(buf.bio_ptr(), self.session)
            return buf.read_all()

        def as_der(self):
            # type: () -> bytes
            buf = BIO.MemoryBuffer()
            m2.i2d_ssl_session(buf.bio_ptr(), self.session)
            return buf.read_all()

        def write_bio(self, bio):
            # type: (BIO.BIO) -> int
            return m2.ssl_session_write_bio(bio.bio_ptr(), self.session)

        def get_time(self):
            # type: () -> int
            return m2.ssl_session_get_time(self.session)

        def set_time(self, t):
            # type: (int) -> int
            return m2.ssl_session_set_time(self.session, t)

        def get_timeout(self):
            # type: () -> int
            return m2.ssl_session_get_timeout(self.session)

        def set_timeout(self, t):
            # type: (int) -> int
            return m2.ssl_session_set_timeout(self.session, t)

    def load_session(pemfile):
        # type: (AnyStr) -> Session
        with BIO.openfile(pemfile) as f:
            cptr = m2.ssl_session_read_pem(f.bio_ptr())
        if cptr is None:
            raise SSLError(Err.get_error())
        return Session(cptr, 1)