def set_ssl(self, conn, close_flag=m2.bio_noclose):
"""
Sets the bio to the SSL pointer which is
contained in the connection object.
"""
self._pyfree = 0
m2.bio_set_ssl(self.bio, conn.ssl, close_flag)
if close_flag == m2.bio_noclose:
conn.set_ssl_close_flag(m2.bio_close)
def setup_ssl(self):
# Make a BIO_s_socket.
self.sockbio = m2.bio_new_socket(self.socket.fileno(), 0)
# Link SSL struct with the BIO_socket.
m2.ssl_set_bio(self.ssl, self.sockbio, self.sockbio)
# Make a BIO_f_ssl.
self.sslbio = m2.bio_new(m2.bio_f_ssl())
# Link BIO_f_ssl with the SSL struct.
m2.bio_set_ssl(self.sslbio, self.ssl, m2.bio_noclose)
def startTLS(self, ctx):
"""
Start SSL/TLS. If this is not called, this instance just passes data
through untouched.
"""
# NOTE: This method signature must match the startTLS() method Twisted
# expects transports to have. This will be called automatically
# by Twisted in STARTTLS situations, for example with SMTP.
if self.tlsStarted:
raise Exception, 'TLS already started'
if debug:
print 'TwistedProtocolWrapper.startTLS'
self.ctx = ctx
self.internalBio = m2.bio_new(m2.bio_s_bio())
m2.bio_set_write_buf_size(self.internalBio, 0)
self.networkBio = _BioProxy(m2.bio_new(m2.bio_s_bio()))
m2.bio_set_write_buf_size(self.networkBio._ptr(), 0)
m2.bio_make_bio_pair(self.internalBio, self.networkBio._ptr())
self.sslBio = _BioProxy(m2.bio_new(m2.bio_f_ssl()))
self.ssl = _SSLProxy(m2.ssl_new(self.ctx.ctx))
if self.isClient:
m2.ssl_set_connect_state(self.ssl._ptr())
else:
m2.ssl_set_accept_state(self.ssl._ptr())
m2.ssl_set_bio(self.ssl._ptr(), self.internalBio, self.internalBio)
m2.bio_set_ssl(self.sslBio._ptr(), self.ssl._ptr(), m2.bio_noclose)
# Need this for writes that are larger than BIO pair buffers
mode = m2.ssl_get_mode(self.ssl._ptr())
m2.ssl_set_mode(self.ssl._ptr(),
mode |
m2.SSL_MODE_ENABLE_PARTIAL_WRITE |
m2.SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER)
self.tlsStarted = 1
def c_style(HOST, PORT, req):
# Set up SSL context.
ctx = m2.ssl_ctx_new(m2.sslv3_method())
m2.ssl_ctx_use_cert(ctx, 'client.pem')
m2.ssl_ctx_use_privkey(ctx, 'client.pem')
# Make the socket connection.
s = socket(AF_INET, SOCK_STREAM)
s.connect((HOST, PORT))
# Set up the SSL connection.
sbio = m2.bio_new_socket(s.fileno(), 0)
ssl = m2.ssl_new(ctx)
m2.ssl_set_bio(ssl, sbio, sbio)
m2.ssl_connect(ssl)
sslbio = m2.bio_new(m2.bio_f_ssl())
m2.bio_set_ssl(sslbio, ssl, 0)
# Push a buffering BIO over the SSL BIO.
iobuf = m2.bio_new(m2.bio_f_buffer())
topbio = m2.bio_push(iobuf, sslbio)
# Send the request.
m2.bio_write(sslbio, req)
# Receive the response.
while 1:
data = m2.bio_gets(topbio, 4096)
if not data: break
sys.stdout.write(data)
# Cleanup. May be missing some necessary steps. ;-|
m2.bio_pop(topbio)
m2.bio_free(iobuf)
m2.ssl_shutdown(ssl)
m2.ssl_free(ssl)
m2.ssl_ctx_free(ctx)
s.close()
def startTLS(self, ctx):
"""
Start SSL/TLS. If this is not called, this instance just passes data
through untouched.
"""
# NOTE: This method signature must match the startTLS() method Twisted
# expects transports to have. This will be called automatically
# by Twisted in STARTTLS situations, for example with SMTP.
if self.tlsStarted:
raise Exception('TLS already started')
self.ctx = ctx
self.internalBio = m2.bio_new(m2.bio_s_bio())
m2.bio_set_write_buf_size(self.internalBio, 0)
self.networkBio = _BioProxy(m2.bio_new(m2.bio_s_bio()))
m2.bio_set_write_buf_size(self.networkBio._ptr(), 0)
m2.bio_make_bio_pair(self.internalBio, self.networkBio._ptr())
self.sslBio = _BioProxy(m2.bio_new(m2.bio_f_ssl()))
self.ssl = _SSLProxy(m2.ssl_new(self.ctx.ctx))
if self.isClient:
m2.ssl_set_connect_state(self.ssl._ptr())
else:
m2.ssl_set_accept_state(self.ssl._ptr())
m2.ssl_set_bio(self.ssl._ptr(), self.internalBio, self.internalBio)
m2.bio_set_ssl(self.sslBio._ptr(), self.ssl._ptr(), m2.bio_noclose)
# Need this for writes that are larger than BIO pair buffers
mode = m2.ssl_get_mode(self.ssl._ptr())
m2.ssl_set_mode(
self.ssl._ptr(), mode | m2.SSL_MODE_ENABLE_PARTIAL_WRITE
| m2.SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER)
self.tlsStarted = 1
# | || \/
# socket read/write <===> BIO read/write
# /\ || |
# || \/ |
# network |
#
# [From http://www.mail-archive.com/[email protected]/msg57297.html]
bio_internal = m2.bio_new(m2.bio_s_bio())
bio_network = m2.bio_new(m2.bio_s_bio())
self._m2_check_err(m2.bio_make_bio_pair(bio_internal, bio_network))
self._bio_network = _BIOWrapper(bio_network, self._ssl)
self._bio_ssl = _BIOWrapper(m2.bio_new(m2.bio_f_ssl()), self._ssl)
self._m2_check_err(m2.ssl_set_bio(self._ssl.obj, bio_internal, bio_internal))
self._m2_check_err(m2.bio_set_ssl(self._bio_ssl.obj, self._ssl.obj, m2.bio_noclose))
# Need this for writes that are larger than BIO pair buffers
mode = m2.ssl_get_mode(self._ssl.obj)
mode |= m2.SSL_MODE_ENABLE_PARTIAL_WRITE | m2.SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER
self._m2_check_err(m2.ssl_set_mode(self._ssl.obj, mode))
self._tls_started = True
self._starttls_kwargs = kwargs
if kwargs['client']:
self._hello()
return self._tls_ip
def starttls_client(self, **kwargs):
"""
# /\ || |
# || \/ |
# network |
#
# [From http://www.mail-archive.com/[email protected]/msg57297.html]
bio_internal = m2.bio_new(m2.bio_s_bio())
bio_network = m2.bio_new(m2.bio_s_bio())
self._m2_check_err(m2.bio_make_bio_pair(bio_internal, bio_network))
self._bio_network = _BIOWrapper(bio_network, self._ssl)
self._bio_ssl = _BIOWrapper(m2.bio_new(m2.bio_f_ssl()), self._ssl)
self._m2_check_err(
m2.ssl_set_bio(self._ssl.obj, bio_internal, bio_internal))
self._m2_check_err(
m2.bio_set_ssl(self._bio_ssl.obj, self._ssl.obj, m2.bio_noclose))
# Need this for writes that are larger than BIO pair buffers
mode = m2.ssl_get_mode(self._ssl.obj)
mode |= m2.SSL_MODE_ENABLE_PARTIAL_WRITE | m2.SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER
self._m2_check_err(m2.ssl_set_mode(self._ssl.obj, mode))
self._tls_started = True
self._starttls_kwargs = kwargs
if kwargs['client']:
self._hello()
return self._tls_ip
def starttls_client(self, **kwargs):
"""
TODO: document me.
