Fix file and backup downloading to use URL returned by server

app/Services/Nodes/NodeJWTService.php

@@ -0,0 +1,74 @@
+<?php
+
+namespace Pterodactyl\Services\Nodes;
+
+use DateTimeInterface;
+use Lcobucci\JWT\Builder;
+use Carbon\CarbonImmutable;
+use Illuminate\Support\Str;
+use Lcobucci\JWT\Signer\Key;
+use Pterodactyl\Models\Node;
+use Lcobucci\JWT\Signer\Hmac\Sha256;
+
+class NodeJWTService
+{
+    /**
+     * @var array
+     */
+    private $claims = [];
+
+    /**
+     * @var int|null
+     */
+    private $expiresAt;
+
+    /**
+     * Set the claims to include in this JWT.
+     *
+     * @param array $claims
+     * @return $this
+     */
+    public function setClaims(array $claims)
+    {
+        $this->claims = $claims;
+
+        return $this;
+    }
+
+    public function setExpiresAt(DateTimeInterface $date)
+    {
+        $this->expiresAt = $date->getTimestamp();
+
+        return $this;
+    }
+
+    /**
+     * Generate a new JWT for a given node.
+     *
+     * @param \Pterodactyl\Models\Node $node
+     * @param string|null $identifiedBy
+     * @return \Lcobucci\JWT\Token
+     */
+    public function handle(Node $node, string $identifiedBy)
+    {
+        $signer = new Sha256;
+
+        $builder = (new Builder)->issuedBy(config('app.url'))
+            ->permittedFor($node->getConnectionAddress())
+            ->identifiedBy(hash('sha256', $identifiedBy), true)
+            ->issuedAt(CarbonImmutable::now()->getTimestamp())
+            ->canOnlyBeUsedAfter(CarbonImmutable::now()->subMinutes(5)->getTimestamp());
+
+        if ($this->expiresAt) {
+            $builder = $builder->expiresAt($this->expiresAt);
+        }
+
+        foreach ($this->claims as $key => $value) {
+            $builder = $builder->withClaim($key, $value);
+        }
+
+        return $builder
+            ->withClaim('unique_id', Str::random(16))
+            ->getToken($signer, new Key($node->daemonSecret));
+    }
+}