从签名请求中删除 app_data

发布于 2024-12-19 21:37:52 字数 576 浏览 3 评论 0原文

当我使用 GET 请求（例如“?app_data=1”）调用我的 fb-app 时，该变量位于签名的请求中。好的，到目前为止。但是，当我单击 Facebook 应用程序中的另一个链接时，app_data 仍在签名的请求中。我的应用程序对此做出反应，但我不再需要它。

如何删除签名请求中的 app_data？有人对这个问题有建议吗？

我使用 PHP 和 JS SDK。

$aSignedRequest = $_REQUEST['signed_request'];
if(isset($aSignedRequest))
{
    $sSignedRequest = $aSignedRequest['signed_request'];
    list($sEncodedSig, $sPayload) = explode('.', $sSignedRequest, 2);

    // decode the data
    $aData = json_decode(base64_decode(strtr($sPayload, '-_', '+/')), true);
    $iContestId = $aData['app_data'];
}

原文

When i call my fb-app with a GET request, like "?app_data=1", the variable is in the signed request. Ok, so far. But, when i click to another link in my fb-app, the app_data is still in the signed request. My application reactes on it, but i don't need it again.

How can i remove the app_data in the signed request? Has anyone a suggestion for this problem?

I use the PHP and JS SDK.

$aSignedRequest = $_REQUEST['signed_request'];
if(isset($aSignedRequest))
{
    $sSignedRequest = $aSignedRequest['signed_request'];
    list($sEncodedSig, $sPayload) = explode('.', $sSignedRequest, 2);

    // decode the data
    $aData = json_decode(base64_decode(strtr($sPayload, '-_', '+/')), true);
    $iContestId = $aData['app_data'];
}

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迷离° 2024-12-26 21:37:52

这是解决方案：

unset($aData['app_data']);
$sData = json_encode($aData);
$sPayload = base64_encode($sData);
$sEncodedSig = hash_hmac('sha256', $sPayload, '<<fb app-secret>>', $raw = true);
$sSignedRequest = base64_encode($sEncodedSig).'.'.$sPayload;
$_REQUEST['signed_request'] = $sSignedRequest;

Here is the solution:

unset($aData['app_data']);
$sData = json_encode($aData);
$sPayload = base64_encode($sData);
$sEncodedSig = hash_hmac('sha256', $sPayload, '<<fb app-secret>>', $raw = true);
$sSignedRequest = base64_encode($sEncodedSig).'.'.$sPayload;
$_REQUEST['signed_request'] = $sSignedRequest;

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