Let's use sanitize number to check up on blacklisted numbers

ari.py

@@ -115,7 +115,7 @@ class Channel(object):
 
     def originate(self, endpoint):
         '''
-        Originate a call to endpoint
+        Originate a call to endpoint.
         '''
         try:
             return ari_call(self.config, ['channels', self.name], 'POST', {'endpoint': endpoint})

piphone.py

@@ -145,6 +145,21 @@ def sanitize_phonenumber(number):
     number = ''.join([c for c in number if c in '0123456789'])
     if not number.startswith('00'):
         raise TypeError('{} is not a valid international number, it should start with 00')
+
+    # We're checking if we're blacklisted
+    db = sqlite3.connect(config['piphone']['db'])
+    bl_re = None
+    with blacklist in db.execute('SELECT pattern, reason FROM blacklist').fetchall():
+        if bl_re == None:
+            bl_re ='(?P<{reason}>^{pattern})'.format(pattern=blacklist[0],reason=blacklist[1],)
+        else:
+            bl_re +='|(?P<{reason}>^{pattern})'.format(pattern=blacklist[0], reason=blacklist[1],)
+    if bl_re != None:
+        # We have blacklisted patterns, need to chck for them
+        groups = re.match(bl_re, number)
+        if len(groups) >= 1:
+            # We matched, so we're blacklisted
+            raise ValueException('{} is blacklisted. Reason: {}', (number, groups.groupdict().keys[0],))
     return number
 
 @asyncio.coroutine