I am trying to download a file behind a login using cURL and PHP. I am able to connect to the server and login properly using CURLOPT_POST; furthermore, my file downloads properly. However, the contents are corrupted and cannot be opened. On a side note, the file downloads onto the server, how would I use curl to download the file to a users local machine if this tool were ever on a public web server.
// POST data from JSTOR Tool
$username = $_POST['username'];
$password = $_POST['password'];
$start = $_POST['start'];
$end = $_POST['end'];
$loginUrl="https://www.jstor.org/action/doLogin";
print "Hello $username, your articles are downloading.";
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, 'https://www.jstor.org/action/doLogin');
curl_setopt($ch, CURLOPT_USERAGENT,'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/32.0.1700.107 Chrome/32.0.1700.107 Safari/537.36');
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, "login=".$username."&password=".$password);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_COOKIESESSION, true);
curl_setopt($ch, CURLOPT_COOKIEJAR, 'cookie-name');
curl_setopt($ch, CURLOPT_COOKIEFILE, '/var/www/ip4.x/file/tmp');
$answer = curl_exec($ch);
if (curl_error($ch)) {
echo curl_error($ch);
}
//another request to download the article, but preserves the session
curl_setopt($ch, CURLOPT_URL, 'http://www.jstor.org/stable/pdf/1.pdf');
curl_setopt($ch, CURLOPT_POST, false);
curl_setopt($ch, CURLOPT_POSTFIELDS, "");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_SSLVERSION,3);
$data = curl_exec ($ch);
print_r($data);
$error = curl_error($ch);
curl_close ($ch);
$destination = "./files/test.pdf";
$file = fopen($destination, "w");
fputs($file, $data);
fclose($file);
print " Did it work?";
Thanks for the help!
I figured it out. I just need curl_setopt($ch, CURLOPT_FOLLOWLOCATION, TRUE); in order to prevent redirects from throwing me off.
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