A simple shell script that can be used to login to the D-Link DIR-615/DIR-655 router or any other router that uses a similar web interface. Made by reverse-engineering the web login JavaScript code, not guaranteed to work on every firmware version.
Pass the router administrator password as the first script argument.
After logging in, you can use curl to make further calls to the router, e.g. reboot the router with
curl 'http://192.168.0.1/reboot.cgi?reset=false'