Redirecting to the right SharePoint page following UAG authentication

• You publish SharePoint content using UAG
• Users want to share links via email/IM
• When the recipient clicks your link, they’re prompted to log in
• After authenticating, they’re redirected to your SharePoint homepage instead of the original link

The reason for this is that UAG only has one <FORM/> action target that is set to your homepage.
The good news is that UAG keeps your original link in its ‘orig_url‘ parameter. We can use Javascript in SharePoint to look at the referring URL and redirect automatically.
To do so, simply add this Javascript to the <HEAD/> of your master page:

<script>

var origURLPos = document.referrer.indexOf(‘&orig_url=’);

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if (origURLPos > -1){

var url = unescape(document.referrer.substr(origURLPos + 10));

location.replace(url);

}

</script>