Is there any example to access information on web site that requires authentication with login and password in form using http from a Lazarus application?

Probably, but only if the lazarus application is built as a CGI.

Ok, yes, on cgi app.
Where?

2013/8/28 Robert Wolfe

"Robert Wolfe" wrote

Probably, but only if the lazarus application is built as a CGI.

Ehm. I think he means accessing an existing webpage which has login with a Lazarus application and not letting a Lazarus application provide a webbased login...

Regards,
Sven

Osvaldo Filho wrote

Is there any example to access information on web site that requires authentication with login and password in form using http from a Lazarus application?

I used Synapse to access the web site of an embedded controller.

Using FireFox with a "developer" plugin, I analyzed the data exchange between browser and server. (In fact here a cookie was involved, supposedly to allow the server to do an automatic log out after some idle time.)

After that I recreated the dialog in pascal code with Synapse HTTP functions.

I suppose the details of the necessary actions to a successful login might very between different sites.

-Michael

Could you send a piece of code as an example?

2013/8/29 Michael Schnell

My Internet Tools (http://www.benibela.de/sources_en.html#internettools) are made for that.

For example:

uses simpleinternet;
var i: IXQValue;
begin
   for i in
process(httpRequest(process('http://www.example.org/the/page/with/the/login/form',
'form(/form, {"username": "'+username+'", "password": "'+password+'"})')),
                    '//tr/td[2]') do
     writeln(i.toString);
end.

will fill out the login form on the first page, then load the second page, and print the values of the second column of all table rows