On Mon, May 23, 2016 at 09:00:39PM +0000, Michael Pfeffer via curl-library wrote:
> At first i´m a newbie in using libcurl. I must login via http post (libcurl) to http://earthexplorer.usgs.gov and collect images. I use the POSTFIELDS data to set search criteria but it doesnt seem to work. How can i select a option? How can i select a inputfield without name?
> I even don't know if i ask the right questions. I used some other sides with get request, it worked fine.
>
> curl_easy_setopt(curl,CURLOPT_URL,"http://earthexplorer.usgs.gov");
> curl_easy_setopt(curl,CURLOPT_USERPWD,"login:password");
> curl_easy_setopt(curl,CURLOPT_POSTFIELDS,"typeAddress=WRS1&pathAddress=3$rowAddress=3");
> curl_easy_setopt(curl, CURLOPT_VERBOSE, true);
> curl_easy_setopt(curl,CURLOPT_FOLLOWLOCATION,true);

It's unlikely the web site uses HTTP authentication for login. It more likely
uses a cookie that is set following a POST to some other URL which must then be
sent with the request. See
https://curl.haxx.se/docs/httpscripting.html#Some_login_tricks

>>> Dan
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Received on 2016-05-25