/**
* Returns an HTTP fetcher object. If the CURL extension is
* present, an instance of {@link Auth_Yadis_ParanoidHTTPFetcher}
* is returned. If not, an instance of
* {@link Auth_Yadis_PlainHTTPFetcher} is returned.
*
* If Auth_Yadis_CURL_OVERRIDE is defined, this method will always
* return a {@link Auth_Yadis_PlainHTTPFetcher}.
*/
function getHTTPFetcher($timeout = 20)
{
if (Auth_Yadis_Yadis::curlPresent() && !defined('Auth_Yadis_CURL_OVERRIDE')) {
$fetcher = new Auth_Yadis_ParanoidHTTPFetcher($timeout);
} else {
$fetcher = new Auth_Yadis_PlainHTTPFetcher($timeout);
}
return $fetcher;
}
function detect_fetcher($r, &$out)
{
$out .= $r->h2('HTTP Fetching');
$result = @(include 'Auth/Yadis/Yadis.php');
if (!$result) {
$out .= $r->p('Yadis code unavailable; could not test fetcher support.');
return false;
}
if (Auth_Yadis_Yadis::curlPresent()) {
$out .= $r->p('This PHP installation has support for libcurl. Good.');
} else {
$out .= $r->p('This PHP installation does not have support for ' . 'libcurl. CURL is not required but is recommended. ' . 'The OpenID library will use an fsockopen()-based fetcher.');
$lnk = $r->link('http://us3.php.net/manual/en/ref.curl.php');
$out .= $r->p('See ' . $lnk . ' about enabling the libcurl support ' . 'for PHP.');
}
$ok = true;
$fetcher = Auth_Yadis_Yadis::getHTTPFetcher();
$fetch_url = 'http://www.openidenabled.com/resources/php-fetch-test';
$expected_url = $fetch_url . '.txt';
$result = $fetcher->get($fetch_url);
if (isset($result)) {
$parts = array('An HTTP request was completed.');
// list ($code, $url, $data) = $result;
if ($result->status != '200') {
$ok = false;
$parts[] = $r->b(sprintf('Got %s instead of the expected HTTP status code ' . '(200).', $result->status));
}
$url = $result->final_url;
if ($url != $expected_url) {
$ok = false;
if ($url == $fetch_url) {
$msg = 'The redirected URL was not returned.';
} else {
$msg = 'An unexpected URL was returned: <' . $url . '>.';
}
$parts[] = $r->b($msg);
}
$data = $result->body;
if ($data != 'Hello World!') {
$ok = false;
$parts[] = $r->b('Unexpected data was returned.');
}
$out .= $r->p(implode(' ', $parts));
} else {
$ok = false;
$out .= $r->p('Fetching URL ' . $lnk . ' failed!');
}
if ($fetcher->supportsSSL()) {
$out .= $r->p('Your PHP installation appears to support SSL, so it ' . 'will be able to process HTTPS identity URLs and server URLs.');
} else {
$out .= $r->p('Your PHP installation does not support SSL, so it ' . 'will NOT be able to process HTTPS identity URLs and server URLs.');
}
return $ok;
}