topic How to get a download URL using webscripts in Alfresco Archive

How to get a download URL using webscripts

ltardioli — Tue, 11 Jun 2013 15:10:58 GMT

Hello people!I want to write a webscript that generates a PDF file and return its URL so the user could download it;The problem is that when I get the URL using: url.getServer()+url.context+node.url, Alfresco asks the user to log in again.I'm using user authentication in description file, so the use

Re: How to get a download URL using webscripts

steven_okennedy — Tue, 11 Jun 2013 18:08:00 GMT

Hi Itardioli,

It sounds like you're accidentally using 2 authentication mechanisms. How are you accessing the the webscript, is it through /alfresco/service/… (or /alfresco/s/… which is equivalent) or /alfresco/wcservice/… (/alfresco/wcs/…)

The first bypasses the authentication chain and uses basic authentication as far as I know. The second one uses the mechanisms defined in the chain, including SSO if you have it configured.

The node.url function will produce a link that looks like /d/a/<node ref>/… which uses the download servlet rather and also pays attention to the auth chain.

I think if you use the /alfresco/wcs/ it should avoid the double authentication problem

Regards

Steven

Re: How to get a download URL using webscripts

rjohnson — Wed, 12 Jun 2013 16:09:50 GMT

I would suggest that you modify the webscript that generates the PDF to be a webscript that returns content to a browser window.

You need to define your webscript as a special kind as shown below


<webscript kind="org.alfresco.repository.content.stream">
‍‍‍

and then you return your PDF content as follows:-


function main(){
    var nodeRef = args.noderef;
    // get the node from the reference
    if(nodeRef) {
       var doc = search.findNode(nodeRef);
       // Get the kids
       for each (node in doc.getChildren()) {
          if(node.name == "pdfExport") {
             var pdfNode = node;
             break;
          }
       }
       // One of them must have a name cm:pdfExport or you lash it
       if (pdfNode)
       {
          model.contentNode = pdfNode;
       }
       else
       {
          status.code = 400;
          status.message = "Node " + nodeRef + " does not have a PDF rendition";
          status.redirect = true;
       }
    } else {
      status.code = 404;
      status.message = "Node " + nodeRef + " does not exist";
      status.redirect = true;       
    }
}

main();
‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

Bob

Re: How to get a download URL using webscripts

ltardioli — Thu, 13 Jun 2013 13:47:36 GMT

Thanks a lot Steven and Bob!
Both solution worked here and it will help me a lot on another problems!!

I really didnt know about those kind of authentication and about to change the kind of the webscript!