924 lines
26 KiB
PHP
924 lines
26 KiB
PHP
<?php
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/**
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* @file include/network.php
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*/
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use \Friendica\Core\Config;
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require_once("include/xml.php");
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require_once('include/Probe.php');
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/**
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* @brief Curl wrapper
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*
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* If binary flag is true, return binary results.
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* Set the cookiejar argument to a string (e.g. "/tmp/friendica-cookies.txt")
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* to preserve cookies from one request to the next.
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*
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* @param string $url URL to fetch
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* @param boolean $binary default false
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* TRUE if asked to return binary results (file download)
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* @param integer $redirects The recursion counter for internal use - default 0
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* @param integer $timeout Timeout in seconds, default system config value or 60 seconds
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* @param string $accept_content supply Accept: header with 'accept_content' as the value
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* @param string $cookiejar Path to cookie jar file
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*
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* @return string The fetched content
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*/
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function fetch_url($url,$binary = false, &$redirects = 0, $timeout = 0, $accept_content=Null, $cookiejar = 0) {
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$ret = z_fetch_url(
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$url,
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$binary,
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$redirects,
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array('timeout'=>$timeout,
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'accept_content'=>$accept_content,
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'cookiejar'=>$cookiejar
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));
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return($ret['body']);
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}
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/**
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* @brief fetches an URL.
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*
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* @param string $url URL to fetch
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* @param boolean $binary default false
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* TRUE if asked to return binary results (file download)
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* @param int $redirects The recursion counter for internal use - default 0
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* @param array $opts (optional parameters) assoziative array with:
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* 'accept_content' => supply Accept: header with 'accept_content' as the value
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* 'timeout' => int Timeout in seconds, default system config value or 60 seconds
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* 'http_auth' => username:password
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* 'novalidate' => do not validate SSL certs, default is to validate using our CA list
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* 'nobody' => only return the header
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* 'cookiejar' => path to cookie jar file
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*
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* @return array an assoziative array with:
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* int 'return_code' => HTTP return code or 0 if timeout or failure
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* boolean 'success' => boolean true (if HTTP 2xx result) or false
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* string 'redirect_url' => in case of redirect, content was finally retrieved from this URL
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* string 'header' => HTTP headers
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* string 'body' => fetched content
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*/
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function z_fetch_url($url,$binary = false, &$redirects = 0, $opts=array()) {
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$ret = array('return_code' => 0, 'success' => false, 'header' => "", 'body' => "");
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$stamp1 = microtime(true);
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$a = get_app();
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$ch = @curl_init($url);
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if(($redirects > 8) || (! $ch))
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return false;
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@curl_setopt($ch, CURLOPT_HEADER, true);
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if(x($opts,"cookiejar")) {
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curl_setopt($ch, CURLOPT_COOKIEJAR, $opts["cookiejar"]);
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curl_setopt($ch, CURLOPT_COOKIEFILE, $opts["cookiejar"]);
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}
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// These settings aren't needed. We're following the location already.
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// @curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
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// @curl_setopt($ch, CURLOPT_MAXREDIRS, 5);
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if (x($opts,'accept_content')){
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curl_setopt($ch,CURLOPT_HTTPHEADER, array (
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"Accept: " . $opts['accept_content']
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));
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}
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@curl_setopt($ch, CURLOPT_RETURNTRANSFER,true);
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@curl_setopt($ch, CURLOPT_USERAGENT, $a->get_useragent());
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$range = intval(Config::get('system', 'curl_range_bytes', 0));
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if ($range > 0) {
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@curl_setopt($ch, CURLOPT_RANGE, '0-'.$range);
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}
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if(x($opts,'headers')){
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@curl_setopt($ch, CURLOPT_HTTPHEADER, $opts['headers']);
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}
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if(x($opts,'nobody')){
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@curl_setopt($ch, CURLOPT_NOBODY, $opts['nobody']);
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}
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if(x($opts,'timeout')){
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@curl_setopt($ch, CURLOPT_TIMEOUT, $opts['timeout']);
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} else {
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$curl_time = intval(get_config('system','curl_timeout'));
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@curl_setopt($ch, CURLOPT_TIMEOUT, (($curl_time !== false) ? $curl_time : 60));
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}
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// by default we will allow self-signed certs
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// but you can override this
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$check_cert = get_config('system','verifyssl');
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@curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, (($check_cert) ? true : false));
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if ($check_cert) {
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@curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);
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}
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$prx = get_config('system','proxy');
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if(strlen($prx)) {
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@curl_setopt($ch, CURLOPT_HTTPPROXYTUNNEL, 1);
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@curl_setopt($ch, CURLOPT_PROXY, $prx);
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$prxusr = @get_config('system','proxyuser');
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if(strlen($prxusr))
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@curl_setopt($ch, CURLOPT_PROXYUSERPWD, $prxusr);
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}
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if($binary)
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@curl_setopt($ch, CURLOPT_BINARYTRANSFER,1);
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$a->set_curl_code(0);
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// don't let curl abort the entire application
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// if it throws any errors.
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$s = @curl_exec($ch);
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if (curl_errno($ch) !== CURLE_OK) {
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logger('fetch_url error fetching '.$url.': '.curl_error($ch), LOGGER_NORMAL);
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}
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$ret['errno'] = curl_errno($ch);
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$base = $s;
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$curl_info = @curl_getinfo($ch);
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$http_code = $curl_info['http_code'];
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logger('fetch_url '.$url.': '.$http_code." ".$s, LOGGER_DATA);
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$header = '';
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// Pull out multiple headers, e.g. proxy and continuation headers
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// allow for HTTP/2.x without fixing code
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while(preg_match('/^HTTP\/[1-2].+? [1-5][0-9][0-9]/',$base)) {
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$chunk = substr($base,0,strpos($base,"\r\n\r\n")+4);
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$header .= $chunk;
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$base = substr($base,strlen($chunk));
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}
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$a->set_curl_code($http_code);
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$a->set_curl_content_type($curl_info['content_type']);
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$a->set_curl_headers($header);
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if($http_code == 301 || $http_code == 302 || $http_code == 303 || $http_code == 307) {
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$new_location_info = @parse_url($curl_info["redirect_url"]);
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$old_location_info = @parse_url($curl_info["url"]);
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$newurl = $curl_info["redirect_url"];
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if (($new_location_info["path"] == "") AND ($new_location_info["host"] != ""))
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$newurl = $new_location_info["scheme"]."://".$new_location_info["host"].$old_location_info["path"];
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$matches = array();
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if (preg_match('/(Location:|URI:)(.*?)\n/i', $header, $matches)) {
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$newurl = trim(array_pop($matches));
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}
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if(strpos($newurl,'/') === 0)
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$newurl = $old_location_info["scheme"]."://".$old_location_info["host"].$newurl;
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if (filter_var($newurl, FILTER_VALIDATE_URL)) {
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$redirects++;
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@curl_close($ch);
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return z_fetch_url($newurl,$binary, $redirects, $opts);
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}
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}
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$a->set_curl_code($http_code);
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$a->set_curl_content_type($curl_info['content_type']);
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$body = substr($s,strlen($header));
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$rc = intval($http_code);
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$ret['return_code'] = $rc;
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$ret['success'] = (($rc >= 200 && $rc <= 299) ? true : false);
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$ret['redirect_url'] = $url;
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if(! $ret['success']) {
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$ret['error'] = curl_error($ch);
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$ret['debug'] = $curl_info;
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logger('z_fetch_url: error: ' . $url . ': ' . $ret['error'], LOGGER_DEBUG);
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logger('z_fetch_url: debug: ' . print_r($curl_info,true), LOGGER_DATA);
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}
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$ret['body'] = substr($s,strlen($header));
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$ret['header'] = $header;
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if(x($opts,'debug')) {
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$ret['debug'] = $curl_info;
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}
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@curl_close($ch);
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$a->save_timestamp($stamp1, "network");
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return($ret);
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}
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// post request to $url. $params is an array of post variables.
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/**
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* @brief Post request to $url
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*
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* @param string $url URL to post
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* @param mixed $params
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* @param string $headers HTTP headers
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* @param integer $redirects Recursion counter for internal use - default = 0
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* @param integer $timeout The timeout in seconds, default system config value or 60 seconds
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*
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* @return string The content
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*/
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function post_url($url,$params, $headers = null, &$redirects = 0, $timeout = 0) {
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$stamp1 = microtime(true);
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$a = get_app();
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$ch = curl_init($url);
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if(($redirects > 8) || (! $ch))
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return false;
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logger("post_url: start ".$url, LOGGER_DATA);
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curl_setopt($ch, CURLOPT_HEADER, true);
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curl_setopt($ch, CURLOPT_RETURNTRANSFER,true);
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curl_setopt($ch, CURLOPT_POST,1);
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curl_setopt($ch, CURLOPT_POSTFIELDS,$params);
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curl_setopt($ch, CURLOPT_USERAGENT, $a->get_useragent());
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if(intval($timeout)) {
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curl_setopt($ch, CURLOPT_TIMEOUT, $timeout);
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}
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else {
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$curl_time = intval(get_config('system','curl_timeout'));
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curl_setopt($ch, CURLOPT_TIMEOUT, (($curl_time !== false) ? $curl_time : 60));
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}
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if(defined('LIGHTTPD')) {
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if(!is_array($headers)) {
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$headers = array('Expect:');
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} else {
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if(!in_array('Expect:', $headers)) {
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array_push($headers, 'Expect:');
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}
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}
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}
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if($headers)
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curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
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$check_cert = get_config('system','verifyssl');
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curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, (($check_cert) ? true : false));
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if ($check_cert) {
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@curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);
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}
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$prx = get_config('system','proxy');
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if(strlen($prx)) {
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curl_setopt($ch, CURLOPT_HTTPPROXYTUNNEL, 1);
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curl_setopt($ch, CURLOPT_PROXY, $prx);
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$prxusr = get_config('system','proxyuser');
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if(strlen($prxusr))
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curl_setopt($ch, CURLOPT_PROXYUSERPWD, $prxusr);
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}
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$a->set_curl_code(0);
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// don't let curl abort the entire application
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// if it throws any errors.
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$s = @curl_exec($ch);
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$base = $s;
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$curl_info = curl_getinfo($ch);
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$http_code = $curl_info['http_code'];
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logger("post_url: result ".$http_code." - ".$url, LOGGER_DATA);
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$header = '';
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// Pull out multiple headers, e.g. proxy and continuation headers
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// allow for HTTP/2.x without fixing code
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while(preg_match('/^HTTP\/[1-2].+? [1-5][0-9][0-9]/',$base)) {
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$chunk = substr($base,0,strpos($base,"\r\n\r\n")+4);
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$header .= $chunk;
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$base = substr($base,strlen($chunk));
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}
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if($http_code == 301 || $http_code == 302 || $http_code == 303 || $http_code == 307) {
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$matches = array();
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preg_match('/(Location:|URI:)(.*?)\n/', $header, $matches);
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$newurl = trim(array_pop($matches));
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if(strpos($newurl,'/') === 0)
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$newurl = $old_location_info["scheme"] . "://" . $old_location_info["host"] . $newurl;
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if (filter_var($newurl, FILTER_VALIDATE_URL)) {
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$redirects++;
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logger("post_url: redirect ".$url." to ".$newurl);
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return post_url($newurl,$params, $headers, $redirects, $timeout);
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//return fetch_url($newurl,false,$redirects,$timeout);
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}
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}
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$a->set_curl_code($http_code);
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$body = substr($s,strlen($header));
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$a->set_curl_headers($header);
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curl_close($ch);
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$a->save_timestamp($stamp1, "network");
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logger("post_url: end ".$url, LOGGER_DATA);
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return($body);
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}
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// Generic XML return
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// Outputs a basic dfrn XML status structure to STDOUT, with a <status> variable
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// of $st and an optional text <message> of $message and terminates the current process.
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function xml_status($st, $message = '') {
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$xml_message = ((strlen($message)) ? "\t<message>" . xmlify($message) . "</message>\r\n" : '');
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if($st)
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logger('xml_status returning non_zero: ' . $st . " message=" . $message);
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header( "Content-type: text/xml" );
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echo '<?xml version="1.0" encoding="UTF-8"?>'."\r\n";
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echo "<result>\r\n\t<status>$st</status>\r\n$xml_message</result>\r\n";
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killme();
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}
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/**
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* @brief Send HTTP status header and exit.
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*
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* @param integer $val HTTP status result value
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* @param array $description optional message
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* 'title' => header title
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* 'description' => optional message
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*/
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/**
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* @brief Send HTTP status header and exit.
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*
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* @param integer $val HTTP status result value
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* @param array $description optional message
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* 'title' => header title
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* 'description' => optional message
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*/
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function http_status_exit($val, $description = array()) {
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$err = '';
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if($val >= 400) {
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$err = 'Error';
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if (!isset($description["title"]))
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$description["title"] = $err." ".$val;
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}
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if($val >= 200 && $val < 300)
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$err = 'OK';
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logger('http_status_exit ' . $val);
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header($_SERVER["SERVER_PROTOCOL"] . ' ' . $val . ' ' . $err);
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if (isset($description["title"])) {
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$tpl = get_markup_template('http_status.tpl');
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echo replace_macros($tpl, array('$title' => $description["title"],
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'$description' => $description["description"]));
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}
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killme();
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}
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/**
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* @brief Check URL to se if ts's real
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*
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* Take a URL from the wild, prepend http:// if necessary
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* and check DNS to see if it's real (or check if is a valid IP address)
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*
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* @param string $url The URL to be validated
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* @return boolean True if it's a valid URL, fals if something wrong with it
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*/
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function validate_url(&$url) {
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if(get_config('system','disable_url_validation'))
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return true;
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// no naked subdomains (allow localhost for tests)
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if(strpos($url,'.') === false && strpos($url,'/localhost/') === false)
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return false;
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if(substr($url,0,4) != 'http')
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$url = 'http://' . $url;
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/// @TODO Really supress function outcomes? Why not find them + debug them?
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$h = @parse_url($url);
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if((is_array($h)) && (dns_get_record($h['host'], DNS_A + DNS_CNAME + DNS_PTR) || filter_var($h['host'], FILTER_VALIDATE_IP) )) {
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return true;
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}
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return false;
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}
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/**
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* @brief Checks that email is an actual resolvable internet address
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*
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* @param string $addr The email address
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* @return boolean True if it's a valid email address, false if it's not
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*/
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function validate_email($addr) {
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if(get_config('system','disable_email_validation'))
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return true;
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if(! strpos($addr,'@'))
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return false;
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$h = substr($addr,strpos($addr,'@') + 1);
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if(($h) && (dns_get_record($h, DNS_A + DNS_CNAME + DNS_PTR + DNS_MX) || filter_var($h, FILTER_VALIDATE_IP) )) {
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return true;
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}
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return false;
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}
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/**
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* @brief Check if URL is allowed
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*
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* Check $url against our list of allowed sites,
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* wildcards allowed. If allowed_sites is unset return true;
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*
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* @param string $url URL which get tested
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* @return boolean True if url is allowed otherwise return false
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*/
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function allowed_url($url) {
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$h = @parse_url($url);
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if(! $h) {
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return false;
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}
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$str_allowed = get_config('system','allowed_sites');
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if(! $str_allowed)
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return true;
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$found = false;
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$host = strtolower($h['host']);
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// always allow our own site
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if($host == strtolower($_SERVER['SERVER_NAME']))
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return true;
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$fnmatch = function_exists('fnmatch');
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$allowed = explode(',',$str_allowed);
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if(count($allowed)) {
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foreach($allowed as $a) {
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$pat = strtolower(trim($a));
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if(($fnmatch && fnmatch($pat,$host)) || ($pat == $host)) {
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$found = true;
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break;
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}
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}
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}
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return $found;
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}
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/**
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* @brief Check if email address is allowed to register here.
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*
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* Compare against our list (wildcards allowed).
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*
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* @param type $email
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* @return boolean False if not allowed, true if allowed
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* or if allowed list is not configured
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*/
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function allowed_email($email) {
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$domain = strtolower(substr($email,strpos($email,'@') + 1));
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if(! $domain)
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return false;
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|
|
|
$str_allowed = get_config('system','allowed_email');
|
|
if(! $str_allowed)
|
|
return true;
|
|
|
|
$found = false;
|
|
|
|
$fnmatch = function_exists('fnmatch');
|
|
$allowed = explode(',',$str_allowed);
|
|
|
|
if(count($allowed)) {
|
|
foreach($allowed as $a) {
|
|
$pat = strtolower(trim($a));
|
|
if(($fnmatch && fnmatch($pat,$domain)) || ($pat == $domain)) {
|
|
$found = true;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
return $found;
|
|
}
|
|
|
|
function avatar_img($email) {
|
|
|
|
$avatar['size'] = 175;
|
|
$avatar['email'] = $email;
|
|
$avatar['url'] = '';
|
|
$avatar['success'] = false;
|
|
|
|
call_hooks('avatar_lookup', $avatar);
|
|
|
|
if (! $avatar['success']) {
|
|
$avatar['url'] = App::get_baseurl() . '/images/person-175.jpg';
|
|
}
|
|
|
|
logger('Avatar: ' . $avatar['email'] . ' ' . $avatar['url'], LOGGER_DEBUG);
|
|
return $avatar['url'];
|
|
}
|
|
|
|
|
|
function parse_xml_string($s,$strict = true) {
|
|
/// @todo Move this function to the xml class
|
|
if($strict) {
|
|
if(! strstr($s,'<?xml'))
|
|
return false;
|
|
$s2 = substr($s,strpos($s,'<?xml'));
|
|
}
|
|
else
|
|
$s2 = $s;
|
|
libxml_use_internal_errors(true);
|
|
|
|
$x = @simplexml_load_string($s2);
|
|
if (! $x) {
|
|
logger('libxml: parse: error: ' . $s2, LOGGER_DATA);
|
|
foreach (libxml_get_errors() as $err) {
|
|
logger('libxml: parse: ' . $err->code." at ".$err->line.":".$err->column." : ".$err->message, LOGGER_DATA);
|
|
}
|
|
libxml_clear_errors();
|
|
}
|
|
return $x;
|
|
}
|
|
|
|
function scale_external_images($srctext, $include_link = true, $scale_replace = false) {
|
|
|
|
// Suppress "view full size"
|
|
if (intval(get_config('system','no_view_full_size'))) {
|
|
$include_link = false;
|
|
}
|
|
|
|
$a = get_app();
|
|
|
|
// Picture addresses can contain special characters
|
|
$s = htmlspecialchars_decode($srctext);
|
|
|
|
$matches = null;
|
|
$c = preg_match_all('/\[img.*?\](.*?)\[\/img\]/ism',$s,$matches,PREG_SET_ORDER);
|
|
if ($c) {
|
|
require_once('include/Photo.php');
|
|
foreach ($matches as $mtch) {
|
|
logger('scale_external_image: ' . $mtch[1]);
|
|
|
|
$hostname = str_replace('www.','',substr(App::get_baseurl(),strpos(App::get_baseurl(),'://')+3));
|
|
if (stristr($mtch[1],$hostname)) {
|
|
continue;
|
|
}
|
|
|
|
// $scale_replace, if passed, is an array of two elements. The
|
|
// first is the name of the full-size image. The second is the
|
|
// name of a remote, scaled-down version of the full size image.
|
|
// This allows Friendica to display the smaller remote image if
|
|
// one exists, while still linking to the full-size image
|
|
if ($scale_replace) {
|
|
$scaled = str_replace($scale_replace[0], $scale_replace[1], $mtch[1]);
|
|
} else {
|
|
$scaled = $mtch[1];
|
|
}
|
|
$i = fetch_url($scaled);
|
|
if (! $i) {
|
|
return $srctext;
|
|
}
|
|
|
|
// guess mimetype from headers or filename
|
|
$type = guess_image_type($mtch[1],true);
|
|
|
|
if ($i) {
|
|
$ph = new Photo($i, $type);
|
|
if ($ph->is_valid()) {
|
|
$orig_width = $ph->getWidth();
|
|
$orig_height = $ph->getHeight();
|
|
|
|
if ($orig_width > 640 || $orig_height > 640) {
|
|
|
|
$ph->scaleImage(640);
|
|
$new_width = $ph->getWidth();
|
|
$new_height = $ph->getHeight();
|
|
logger('scale_external_images: ' . $orig_width . '->' . $new_width . 'w ' . $orig_height . '->' . $new_height . 'h' . ' match: ' . $mtch[0], LOGGER_DEBUG);
|
|
$s = str_replace($mtch[0],'[img=' . $new_width . 'x' . $new_height. ']' . $scaled . '[/img]'
|
|
. "\n" . (($include_link)
|
|
? '[url=' . $mtch[1] . ']' . t('view full size') . '[/url]' . "\n"
|
|
: ''),$s);
|
|
logger('scale_external_images: new string: ' . $s, LOGGER_DEBUG);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// replace the special char encoding
|
|
$s = htmlspecialchars($s,ENT_NOQUOTES,'UTF-8');
|
|
return $s;
|
|
}
|
|
|
|
|
|
function fix_contact_ssl_policy(&$contact,$new_policy) {
|
|
|
|
$ssl_changed = false;
|
|
if ((intval($new_policy) == SSL_POLICY_SELFSIGN || $new_policy === 'self') && strstr($contact['url'],'https:')) {
|
|
$ssl_changed = true;
|
|
$contact['url'] = str_replace('https:','http:',$contact['url']);
|
|
$contact['request'] = str_replace('https:','http:',$contact['request']);
|
|
$contact['notify'] = str_replace('https:','http:',$contact['notify']);
|
|
$contact['poll'] = str_replace('https:','http:',$contact['poll']);
|
|
$contact['confirm'] = str_replace('https:','http:',$contact['confirm']);
|
|
$contact['poco'] = str_replace('https:','http:',$contact['poco']);
|
|
}
|
|
|
|
if ((intval($new_policy) == SSL_POLICY_FULL || $new_policy === 'full') && strstr($contact['url'],'http:')) {
|
|
$ssl_changed = true;
|
|
$contact['url'] = str_replace('http:','https:',$contact['url']);
|
|
$contact['request'] = str_replace('http:','https:',$contact['request']);
|
|
$contact['notify'] = str_replace('http:','https:',$contact['notify']);
|
|
$contact['poll'] = str_replace('http:','https:',$contact['poll']);
|
|
$contact['confirm'] = str_replace('http:','https:',$contact['confirm']);
|
|
$contact['poco'] = str_replace('http:','https:',$contact['poco']);
|
|
}
|
|
|
|
if ($ssl_changed) {
|
|
q("UPDATE `contact` SET
|
|
`url` = '%s',
|
|
`request` = '%s',
|
|
`notify` = '%s',
|
|
`poll` = '%s',
|
|
`confirm` = '%s',
|
|
`poco` = '%s'
|
|
WHERE `id` = %d LIMIT 1",
|
|
dbesc($contact['url']),
|
|
dbesc($contact['request']),
|
|
dbesc($contact['notify']),
|
|
dbesc($contact['poll']),
|
|
dbesc($contact['confirm']),
|
|
dbesc($contact['poco']),
|
|
intval($contact['id'])
|
|
);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Remove Google Analytics and other tracking platforms params from URL
|
|
*
|
|
* @param string $url Any user-submitted URL that may contain tracking params
|
|
* @return string The same URL stripped of tracking parameters
|
|
*/
|
|
function strip_tracking_query_params($url)
|
|
{
|
|
$urldata = parse_url($url);
|
|
if (is_string($urldata["query"])) {
|
|
$query = $urldata["query"];
|
|
parse_str($query, $querydata);
|
|
|
|
if (is_array($querydata)) {
|
|
foreach ($querydata AS $param => $value) {
|
|
if (in_array($param, array("utm_source", "utm_medium", "utm_term", "utm_content", "utm_campaign",
|
|
"wt_mc", "pk_campaign", "pk_kwd", "mc_cid", "mc_eid",
|
|
"fb_action_ids", "fb_action_types", "fb_ref",
|
|
"awesm", "wtrid",
|
|
"woo_campaign", "woo_source", "woo_medium", "woo_content", "woo_term"))) {
|
|
|
|
$pair = $param . "=" . urlencode($value);
|
|
$url = str_replace($pair, "", $url);
|
|
|
|
// Second try: if the url isn't encoded completely
|
|
$pair = $param . "=" . str_replace(" ", "+", $value);
|
|
$url = str_replace($pair, "", $url);
|
|
|
|
// Third try: Maybey the url isn't encoded at all
|
|
$pair = $param . "=" . $value;
|
|
$url = str_replace($pair, "", $url);
|
|
|
|
$url = str_replace(array("?&", "&&"), array("?", ""), $url);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (substr($url, -1, 1) == "?") {
|
|
$url = substr($url, 0, -1);
|
|
}
|
|
}
|
|
|
|
return $url;
|
|
}
|
|
|
|
/**
|
|
* @brief Returns the original URL of the provided URL
|
|
*
|
|
* This function strips tracking query params and follows redirections, either
|
|
* through HTTP code or meta refresh tags. Stops after 10 redirections.
|
|
*
|
|
* @todo Remove the $fetchbody parameter that generates an extraneous HEAD request
|
|
*
|
|
* @see ParseUrl::getSiteinfo
|
|
*
|
|
* @param string $url A user-submitted URL
|
|
* @param int $depth The current redirection recursion level (internal)
|
|
* @param bool $fetchbody Wether to fetch the body or not after the HEAD requests
|
|
* @return string A canonical URL
|
|
*/
|
|
function original_url($url, $depth = 1, $fetchbody = false) {
|
|
$a = get_app();
|
|
|
|
$url = strip_tracking_query_params($url);
|
|
|
|
if ($depth > 10)
|
|
return($url);
|
|
|
|
$url = trim($url, "'");
|
|
|
|
$stamp1 = microtime(true);
|
|
|
|
$siteinfo = array();
|
|
$ch = curl_init();
|
|
curl_setopt($ch, CURLOPT_URL, $url);
|
|
curl_setopt($ch, CURLOPT_HEADER, 1);
|
|
curl_setopt($ch, CURLOPT_NOBODY, 1);
|
|
curl_setopt($ch, CURLOPT_TIMEOUT, 10);
|
|
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
|
|
curl_setopt($ch, CURLOPT_USERAGENT, $a->get_useragent());
|
|
|
|
$header = curl_exec($ch);
|
|
$curl_info = @curl_getinfo($ch);
|
|
$http_code = $curl_info['http_code'];
|
|
curl_close($ch);
|
|
|
|
$a->save_timestamp($stamp1, "network");
|
|
|
|
if ($http_code == 0)
|
|
return($url);
|
|
|
|
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, $fetchbody));
|
|
}
|
|
|
|
// Check for redirects in the meta elements of the body if there are no redirects in the header.
|
|
if (!$fetchbody)
|
|
return(original_url($url, ++$depth, true));
|
|
|
|
// if the file is too large then exit
|
|
if ($curl_info["download_content_length"] > 1000000)
|
|
return($url);
|
|
|
|
// if it isn't a HTML file then exit
|
|
if (($curl_info["content_type"] != "") AND !strstr(strtolower($curl_info["content_type"]),"html"))
|
|
return($url);
|
|
|
|
$stamp1 = microtime(true);
|
|
|
|
$ch = curl_init();
|
|
curl_setopt($ch, CURLOPT_URL, $url);
|
|
curl_setopt($ch, CURLOPT_HEADER, 0);
|
|
curl_setopt($ch, CURLOPT_NOBODY, 0);
|
|
curl_setopt($ch, CURLOPT_TIMEOUT, 10);
|
|
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
|
|
curl_setopt($ch, CURLOPT_USERAGENT, $a->get_useragent());
|
|
|
|
$body = curl_exec($ch);
|
|
curl_close($ch);
|
|
|
|
$a->save_timestamp($stamp1, "network");
|
|
|
|
if (trim($body) == "")
|
|
return($url);
|
|
|
|
// Check for redirect in meta elements
|
|
$doc = new DOMDocument();
|
|
@$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($url);
|
|
}
|
|
|
|
function short_link($url) {
|
|
require_once('library/slinky.php');
|
|
$slinky = new Slinky($url);
|
|
$yourls_url = get_config('yourls','url1');
|
|
if ($yourls_url) {
|
|
$yourls_username = get_config('yourls','username1');
|
|
$yourls_password = get_config('yourls', 'password1');
|
|
$yourls_ssl = get_config('yourls', 'ssl1');
|
|
$yourls = new Slinky_YourLS();
|
|
$yourls->set('username', $yourls_username);
|
|
$yourls->set('password', $yourls_password);
|
|
$yourls->set('ssl', $yourls_ssl);
|
|
$yourls->set('yourls-url', $yourls_url);
|
|
$slinky->set_cascade(array($yourls, new Slinky_Ur1ca(), new Slinky_TinyURL()));
|
|
} else {
|
|
// setup a cascade of shortening services
|
|
// try to get a short link from these services
|
|
// in the order ur1.ca, tinyurl
|
|
$slinky->set_cascade(array(new Slinky_Ur1ca(), new Slinky_TinyURL()));
|
|
}
|
|
return $slinky->short();
|
|
}
|
|
|
|
/**
|
|
* @brief Encodes content to json
|
|
*
|
|
* This function encodes an array to json format
|
|
* and adds an application/json HTTP header to the output.
|
|
* After finishing the process is getting killed.
|
|
*
|
|
* @param array $x The input content
|
|
*/
|
|
function json_return_and_die($x) {
|
|
header("content-type: application/json");
|
|
echo json_encode($x);
|
|
killme();
|
|
}
|
|
|
|
/**
|
|
* @brief Find the matching part between two url
|
|
*
|
|
* @param string $url1
|
|
* @param string $url2
|
|
* @return string The matching part
|
|
*/
|
|
function matching_url($url1, $url2) {
|
|
|
|
if (($url1 == "") OR ($url2 == ""))
|
|
return "";
|
|
|
|
$url1 = normalise_link($url1);
|
|
$url2 = normalise_link($url2);
|
|
|
|
$parts1 = parse_url($url1);
|
|
$parts2 = parse_url($url2);
|
|
|
|
if (!isset($parts1["host"]) OR !isset($parts2["host"]))
|
|
return "";
|
|
|
|
if ($parts1["scheme"] != $parts2["scheme"])
|
|
return "";
|
|
|
|
if ($parts1["host"] != $parts2["host"])
|
|
return "";
|
|
|
|
if ($parts1["port"] != $parts2["port"])
|
|
return "";
|
|
|
|
$match = $parts1["scheme"]."://".$parts1["host"];
|
|
|
|
if ($parts1["port"])
|
|
$match .= ":".$parts1["port"];
|
|
|
|
$pathparts1 = explode("/", $parts1["path"]);
|
|
$pathparts2 = explode("/", $parts2["path"]);
|
|
|
|
$i = 0;
|
|
$path = "";
|
|
do {
|
|
$path1 = $pathparts1[$i];
|
|
$path2 = $pathparts2[$i];
|
|
|
|
if ($path1 == $path2)
|
|
$path .= $path1."/";
|
|
|
|
} while (($path1 == $path2) AND ($i++ <= count($pathparts1)));
|
|
|
|
$match .= $path;
|
|
|
|
return normalise_link($match);
|
|
}
|