diff options
| -rw-r--r-- | backends/lua.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/backends/lua.c b/backends/lua.c index e2f3b0e..d7f2643 100644 --- a/backends/lua.c +++ b/backends/lua.c @@ -239,10 +239,15 @@ static int lua_callback_output(lua_State* interpreter){ //fetch function parameters channel_name = lua_tostring(interpreter, 1); + if(!channel_name){ + LOG("Output function called with invalid channel specification"); + return 0; + } + val.normalised = clamp(luaL_checknumber(interpreter, 2), 1.0, 0.0); //if not started yet, create any requested channels so scripts may set them at load time - if(!last_timestamp && channel_name){ + if(!last_timestamp){ lua_channel(inst, (char*) channel_name, mmchannel_output); } @@ -373,6 +378,10 @@ static int lua_callback_value(lua_State* interpreter, uint8_t input){ //fetch argument channel_name = lua_tostring(interpreter, 1); + if(!channel_name){ + LOG("get_value function called with invalid channel specification"); + return 0; + } //find correct channel & return value for(n = 0; n < data->channels; n++){ |