Primefaces automatic downloader

[GabryJ84 0]

Good evening to all!

I am asking for help since I have a problem that is driving me nuts. I am trying to develop an automatic downloader that should get pdfs from a website where multiple pdfs are randomly published. To be honest, a program already existed, but they switched plaform and it has become a nightmare. The new platform is using PRIMEFACES to present different documents and give option to view or download pdfs.

 

I have tried many combinations of POST data, but none satisfies application requirements and all I get is always Error 500. Maybe the problem is that I don't know how PRIMEFACES works, so I don't understand what to pass.

 

The website is this: https://normativaesercizio.rfi.it/NormativaEsercizio/index.xhtml

 

It is from the Italian railways and what you are supposed to do is to click on the name of a town (from both sides, different document type but same principle) and then click on the pdf icon to view or on the download icon to save.

 

I have used Chrome to inspect what the POST data should contain and what the form is going to submit (in the section below), but it seems it is not enough.

On the Delphi side, I used an IdHTTP.Post.

 

Is someone more expert than me able to help?

 

Thanks in advance.

 

j_id_f:j_id_g_rppDD: 100
j_id_f:j_id_g_rppDD: 100
j_id_f_SUBMIT: 1
javax.faces.ViewState: 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
j_id_f:j_id_g:56:j_id_w: j_id_f:j_id_g:56:j_id_w

Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
Accept-Encoding: gzip, deflate, br
Accept-Language: it-IT,it;q=0.9,en-US;q=0.8,en;q=0.7,fr;q=0.6
Cache-Control: max-age=0
Connection: keep-alive
Content-Length: 2938
Content-Type: application/x-www-form-urlencoded
Cookie: oam.Flash.RENDERMAP.TOKEN=-uxrfp4qya; JSESSIONID=0000xNWX5pdEqyHq0NVTDKBaEMa:-1
Host: normativaesercizio.rfi.it
Origin: https://normativaesercizio.rfi.it
Referer: https://normativaesercizio.rfi.it/NormativaEsercizio/detail.xhtml?doctype=CT&compartimento=MI
sec-ch-ua: ".Not/A)Brand";v="99", "Google Chrome";v="103", "Chromium";v="103"
sec-ch-ua-mobile: ?0
sec-ch-ua-platform: "Windows"
Sec-Fetch-Dest: document
Sec-Fetch-Mode: navigate
Sec-Fetch-Site: same-origin
Sec-Fetch-User: ?1
sec-gpc: 1
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/103.0.0.0 Safari/537.36

Stream := TMemoryStream.Create;
  Params := TStringStream.Create;
  dwn.Request.Method := 'POST';
  dwn.Request.ContentType := 'application/x-www-form-urlencoded';
  dwn.Request.Referer := 'https://normativaesercizio.rfi.it/NormativaEsercizio/detail.xhtml?doctype=' + dnShort(TTabSheet(lv.Parent).Caption) + '&compartimento=' + dnShort(TTabSheet(TPageControl(TTabSheet(lv.Parent).Parent).Parent).Caption);
  Params.WriteString(HERE_POST_DATA);
  IdHTTP.Post(HTTPEncode('https://normativaesercizio.rfi.it/NormativaEsercizio/detail.xhtml'), Params, Stream);
  Stream.SaveToFile(path + item + '.pdf');
  Stream.Clear;

 

[Fr0sT.Brutal 900]

Get full dump of the request your app sends and ensure it's identical to what Chrome sends.