Capture the agent signature on boot

Author: timacdonald

agent/src/agent.php

@@ -7,9 +7,11 @@
 use Laravel\NightwatchAgent\Factories\ServerFactory;
 use Psr\Http\Message\ResponseInterface;
 use React\EventLoop\Loop;
+use RuntimeException;
 use Throwable;
 
 use function date;
+use function file_get_contents;
 use function gethostname;
 use function round;
 use function str_replace;
@@ -46,8 +48,16 @@
 $ingestTimeout ??= 10;
 /** @var ?string $server */
 $server ??= (string) gethostname();
+/** @var ?string $signature */
+$signature ??= (static function () use ($basePath) {
+    $signature = file_get_contents($basePath.'/../../version.txt');
 
+    if ($signature === false) {
+        throw new RuntimeException('Unable to verify the signature file');
+    }
 
+    return $signature;
+})();
 
 /*
  * Logging helpers...

src/Console/AgentCommand.php

@@ -3,6 +3,7 @@
 namespace Laravel\Nightwatch\Console;
 
 use Illuminate\Console\Command;
+use Laravel\Nightwatch\Ingest;
 use SensitiveParameter;
 use Symfony\Component\Console\Attribute\AsCommand;
 
@@ -54,6 +55,8 @@ public function handle(): void
 
         $server = $this->option('server') ?? $this->server;
 
+        $signature = Ingest::AGENT_SIGNATURE;
+
         require __DIR__.'/../../agent/build/agent.phar';
     }
 }

src/Ingest.php

@@ -11,6 +11,8 @@
  */
 final class Ingest implements LocalIngest
 {
+    public const AGENT_SIGNATURE = 'EA7F6BABFE0D3F3B53FEE7E9C5F2E657FAF8CA6156CC92AF7ADC0F750930A98963BC7BB69056C010F4A5B77B4B53C064618A53DE62B1B482A2D75EAEDA38B682';
+
     /**
      * @var (callable(string): void)|null
      */