Allow service data to be passed to shell_command (#2362)

homeassistant/components/shell_command.py

@@ -6,6 +6,7 @@ https://home-assistant.io/components/shell_command/
 """
 import logging
 import subprocess
+import shlex
 
 import voluptuous as vol
 
@@ -23,8 +24,6 @@ CONFIG_SCHEMA = vol.Schema({
     }),
 }, extra=vol.ALLOW_EXTRA)
 
-SHELL_COMMAND_SCHEMA = vol.Schema({})
-
 
 def setup(hass, config):
     """Setup the shell_command component."""
@@ -44,8 +43,7 @@ def setup(hass, config):
             _LOGGER.exception('Error running command: %s', cmd)
 
     for name in conf.keys():
-        hass.services.register(DOMAIN, name, service_handler,
-                               schema=SHELL_COMMAND_SCHEMA)
+        hass.services.register(DOMAIN, name, service_handler)
     return True
 
 
@@ -64,6 +62,6 @@ def _parse_command(hass, cmd, variables):
         shell = True
     else:
         # template used. Must break into list and use shell=False for security
-        cmd = [prog] + rendered_args.split()
+        cmd = [prog] + shlex.split(rendered_args)
         shell = False
     return cmd, shell