wkhtmltopdf and forms based authentication

I have an application that uses forms based authentication. I'm trying to take a copy of a page within the application and save it to PDF using wkhtmltopdf.

wkhtmltopdf is installed and works fine. I can call it successfully from within the application to generate a PDF of another website without authentication (i.e. bbc.co.uk).

I cannot get it to pass username/password to the application in order to generate a copy of the desired page. Instead I get a PDF of the signon screen.

Both client and server are Windows (7 and 2008 respectively). I'm using the command:

wkhtmltopdf.exe --post userid=xxx --post pwd=yyy --ignore-load-errors http://url.com/blah/blah/ test.pdf

Where xxx is my username and yyy is my password. I've been through the so开发者_如何学Pythonurce of the logon page and the ids of the form fields are userid and pwd so I believe I have the post parameters in command line correct.

After thoroughly googling I can see mentions to a --cookie-jar parameter, but haven't managed to work out its usage, or even if it'll help.

thanks

Duncan

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If you're using ASP.NET Forms Authentication, you can forward the current user's authentication cookies along to wkhtmltopdf via a series of --cookie args. This is assuming that an authenticated use (from whom you can obtain auth cookies) is triggering the PDF printout.

Note: This is not complete working code for launching wkhtmltopdf.exe from a .NET app, but merely an example of how to pass along cookies to wkhtmltopdf.

For an example of launching wkhtmltopdf.exe from .NET, see: how to pass html as a string using wkhtmltopdf?

ProcessStartInfo psi = new ProcessStartInfo();
psi.FileName = "wkhtmltopdf.exe";

string cookieArgs = "";
var cookies = HttpContext.Current.Request.Cookies;

if (cookies != null)
{
    var sb = new System.Text.StringBuilder();

    // you probably only need the ".ASPXFORMSAUTH" 
    // and "ASP.NET_SessionId" cookies
    // but I pass everything just in case
    foreach (string key in cookies.AllKeys)
    {
        string value = cookies[key].Value;
        sb.AppendFormat("--cookie {0} {1} ", key, value);                    
    }
    cookieArgs = sb.ToString();
}

psi.Arguments = urlToPrint + " -q " + cookieArgs + " -"; 
Process.Start(psi);

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This issue is now resolved. I was using version 0.9.9 and couldn't get it to work. As soon as I moved to version 0.10.0 rc2 it worked fine.

If anyone else is trying the same thing, the line of code I used was as above, I didn't need the --cookie-jar parameter.