OAuthDataStore.php

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<?php

namespace ILIAS\LTI\ToolProvider;

use ILIAS\LTIOAuth;
use ILIAS\LTIOAuth\OAuthConsumer;
use ILIAS\LTIOAuth\OAuthToken;
use ILIAS\LTIOAuth\OAuthException;

class OAuthDataStore extends LTIOAuth\OAuthDataStore
{
    private $system = null;

    public function __construct($system)
    {
        $this->system = $system;
    }

    public function lookup_consumer(string $consumerKey): OAuthConsumer
    {
        $key = $this->system->getKey();
        $secret = '';
        if (!empty($key)) {
            $secret = $this->system->secret;
        } elseif (($this->system instanceof Tool) && !empty($this->system->platform)) {
            $key = $this->system->platform->getKey();
            $secret = $this->system->platform->secret;
        } elseif (($this->system instanceof Platform) && !empty(Tool::$defaultTool)) {
            $key = Tool::$defaultTool->getKey();
            $secret = Tool::$defaultTool->secret;
        }
        if ($key !== $consumerKey) {
            throw new OAuthException('Consumer key not found');
        }

        return new OAuthConsumer($key, $secret);
    }

    public function lookup_token(OAuthConsumer $consumer, string $tokenType, string $token): OAuthToken
    {
        return new OAuthToken($consumer, '');
    }

    public function lookup_nonce(OAuthConsumer $consumer, ?OAuthToken $token, string $value, int $timestamp): bool
    {
        if ($this->system instanceof Platform) {
            $platform = $this->system;
        } else {
            $platform = $this->system->platform;
        }
        $nonce = new PlatformNonce($platform, $value);
        $ok = !$nonce->load();
        if ($ok) {
            $ok = $nonce->save();
        }
        if (!$ok) {
            $this->system->reason = 'Invalid nonce.';
        }

        return !$ok;
    }

    public function new_request_token(OAuthConsumer $consumer, $callback = null): ?string
    {
        return null;
    }

    public function new_access_token(OAuthToken $token, OAuthConsumer $consumer, $verifier = null): ?string
    {
        return null;
    }
}