Basic HTTP authentication improvement

Add ability to supply the username/password as a parameter instead of
inputting them from stdin. The original behavior can be triggered by
using '-' as a parameter to '-t' option

proxy.py

@@ -63,7 +63,7 @@ def main():
 	advancedGroup.add_option('-s','--start-ping', help='Start the pinging thread first - some services send data first (eg. SSH)', dest='start_p_thread', action='store_true', default=Defaults['start_p_thread'])
 	advancedGroup.add_option('-c','--verify-server-cert', help='Verify Server Certificate', dest='start_p_thread', action='store_false', default=Defaults['ignoreServerCert'])
 	advancedGroup.add_option('-C','--cookie', help='Request cookies', dest='cookie', action='store')
-	advancedGroup.add_option('-t','--authentication', help='Basic authentication', dest='bauth', action='store_true')
+        advancedGroup.add_option('-t','--authentication', help='Basic authentication (username:password or \'-\' for stdin input', dest='bauth', action='store', default='no')
 
 	parser.add_option_group(advancedGroup)
 
@@ -100,10 +100,13 @@ def main():
 			proxy_digest_handler = urllib2.ProxyDigestAuthHandler(password_mgr)
 
 			options['upProxyAuth']=[proxy_handler,proxy_basic_handler,proxy_digest_handler]
-        if options['bauth']:            # Basic authentication
-            username=raw_input("Basic Authentication\nUsername:")
-            from getpass import getpass
-            passwd=getpass("Password:")
+        if not options['bauth'] == 'no':            # Basic authentication
+            if options['bauth'] == '-':
+                username=raw_input("Basic Authentication\nUsername:")
+                from getpass import getpass
+                passwd=getpass("Password:")
+            else:
+                username, passwd = options['bauth'].split(':')
 
             options['bauth'] = b64encode('%s:%s' % (username, passwd))