old_contents: (function() {
  	
  	var rule = data.rules[parseInt(request.param.num, 10)] || null;
  	
  	if (rule === null) return response.error(404);
  	
  	switch (request.method) {
  		case 'PUT':
  			var cmd = '';
  			
  			switch (request.param.action) {
  				case 'enable':
  					cmd = 'node app-cli.js -mode rule --enable -n ' + request.param.num;
  					break;
  				case 'disable':
  					cmd = 'node app-cli.js -mode rule --disable -n ' + request.param.num;
  					break;
  			}
  			
  			child_process.exec(cmd, function(err, stdout, stderr) {
  				if (err) return response.error(500);
  				
  				response.head(200);
  				response.end('{}');
  			});
  			return;
  	}
  
  })();
new_contents: (function() {
  	
  	var num = parseInt(request.param.num, 10).toString(10);
  	var rule = data.rules[num] || null;
  	
  	if (rule === null) return response.error(404);
  	
  	switch (request.method) {
  		case 'PUT':
  			var cmd = '';
  			
  			switch (request.param.action) {
  				case 'enable':
  					cmd = 'node app-cli.js -mode rule --enable -n ' + num;
  					break;
  				case 'disable':
  					cmd = 'node app-cli.js -mode rule --disable -n ' + num;
  					break;
  			}
  			
  			child_process.exec(cmd, function(err, stdout, stderr) {
  				if (err) return response.error(500);
  				
  				response.head(200);
  				response.end('{}');
  			});
  			return;
  	}
  
  })();
  
subject: Fix same rule parameter validation