Made SSL support optional.

alarmdecoder/devices.py

@@ -21,7 +21,6 @@ import serial
 import serial.tools.list_ports
 import socket
 
-from OpenSSL import SSL, crypto
 from .util import CommError, TimeoutError, NoDeviceError, InvalidMessageError
 from .event import event
 
@@ -35,6 +34,16 @@ try:
 except ImportError:
     have_pyftdi = False
 
+try:
+    from OpenSSL import SSL, crypto
+
+    have_openssl = True
+
+except ImportError:
+    from collections import namedtuple
+    SSL = namedtuple('SSL', ['Error', 'WantReadError', 'SysCallError'])
+    have_openssl = False
+
 
 class Device(object):
     """
@@ -1142,6 +1151,9 @@ class SocketDevice(Device):
         :raises: :py:class:`~alarmdecoder.util.CommError`
         """
 
+        if not have_openssl:
+            raise ImportError('SSL sockets have been disabled due to missing requirement: pyopenssl.')
+
         try:
             ctx = SSL.Context(SSL.TLSv1_METHOD)
 

requirements.txt

@@ -1,10 +1 @@
-argparse==1.2.1
-cffi==0.9.2
-cryptography==0.8.1
-enum34==1.0.4
-pyOpenSSL==0.14
-pyasn1==0.1.7
-pycparser==2.10
 pyserial==2.7
-six==1.9.0
-wsgiref==0.1.2

setup.py

@@ -30,7 +30,6 @@ setup(name='alarmdecoder',
     license='MIT',
     packages=['alarmdecoder', 'alarmdecoder.event'],
     install_requires=[
-        'pyopenssl',
         'pyserial>=2.7',
     ],
     test_suite='nose.collector',