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New function "original_url" (moved from an addon) that follows all redirects to the original url.

This commit is contained in:
Michael Vogel 2014-04-04 10:55:30 +02:00
parent 7b471e097a
commit a64948b7f7
1 changed files with 69 additions and 1 deletions
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70
include/network.php
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@ -189,7 +189,7 @@ function post_url($url,$params, $headers = null, &$redirects = 0, $timeout = 0)
$base = substr($base,strlen($chunk));
}
if($http_code == 301 || $http_code == 302 || $http_code == 303) {
if($http_code == 301 || $http_code == 302 || $http_code == 303 || $http_code == 307) {
$matches = array();
preg_match('/(Location:|URI:)(.*?)\n/', $header, $matches);
$newurl = trim(array_pop($matches));
@ -1105,3 +1105,71 @@ function xml2array($contents, $namespaces = true, $get_attributes=1, $priority =
return($xml_array);
}
function original_url($url, $depth=1, $fetchbody = false) {
if ($depth > 10)
return($url);
$url = trim($url, "'");
$siteinfo = array();
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_HEADER, 1);
if ($fetchbody)
curl_setopt($ch, CURLOPT_NOBODY, 0);
else
curl_setopt($ch, CURLOPT_NOBODY, 1);
curl_setopt($ch, CURLOPT_TIMEOUT, 10);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch,CURLOPT_USERAGENT,'Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:24.0) Gecko/20100101 Firefox/24.0');
$header = curl_exec($ch);
$curl_info = @curl_getinfo($ch);
$http_code = $curl_info['http_code'];
curl_close($ch);
if ((($curl_info['http_code'] == "301") OR ($curl_info['http_code'] == "302"))
AND (($curl_info['redirect_url'] != "") OR ($curl_info['location'] != ""))) {
if ($curl_info['redirect_url'] != "")
return(original_url($curl_info['redirect_url'], ++$depth, $fetchbody));
else
return(original_url($curl_info['location'], ++$depth, $fetchbody));
}
$pos = strpos($header, "\r\n\r\n");
if ($pos)
$body = trim(substr($header, $pos));
else
$body = $header;
if (trim($body) == "")
return(original_url($url, ++$depth, true));
$doc = new DOMDocument();
@$doc->loadHTML($body);
$xpath = new DomXPath($doc);
$list = $xpath->query("//meta[@content]");
foreach ($list as $node) {
$attr = array();
if ($node->attributes->length)
foreach ($node->attributes as $attribute)
$attr[$attribute->name] = $attribute->value;
if (@$attr["http-equiv"] == 'refresh') {
$path = $attr["content"];
$pathinfo = explode(";", $path);
$content = "";
foreach ($pathinfo AS $value)
if (substr(strtolower($value), 0, 4) == "url=")
return(original_url(substr($value, 4), ++$depth));
}
}
return($url);
}