738e22d3eb
- Letting $profile_link and $hcard always been overwritten with newly found entries has caused DFRN network detectio to fail and "connect" is no longer working. This fix makes sure that these both variables are only set if they are still empty. - added more debug lines to see which URL was it before and after webfinger "detection" Signed-off-by: Roland Haeder <roland@mxchange.org>
1135 lines
31 KiB
PHP
1135 lines
31 KiB
PHP
<?php
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/**
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* @file include/network.php
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*/
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require_once("include/xml.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, $a->get_useragent());
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if(x($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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@curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, (($check_cert) ? 2 : false));
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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($ch), LOGGER_NORMAL);
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}
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$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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curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, (($check_cert) ? 2 : false));
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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 $description optional message
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* 'title' => header title
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* 'description' => optional message
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*/
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function http_status_exit($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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// Given an email style address, perform webfinger lookup and
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// return the resulting DFRN profile URL, or if no DFRN profile URL
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// is located, returns an OStatus subscription template (prefixed
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// with the string 'stat:' to identify it as on OStatus template).
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// If this isn't an email style address just return $webbie.
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// Return an empty string if email-style addresses but webfinger fails,
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// or if the resultant personal XRD doesn't contain a supported
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// subscription/friend-request attribute.
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// amended 7/9/2011 to return an hcard which could save potentially loading
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// a lengthy content page to scrape dfrn attributes
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function webfinger_dfrn($webbie,&$hcard) {
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if(! strstr($webbie,'@')) {
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return $webbie;
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}
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$profile_link = '';
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$links = webfinger($webbie);
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logger('webfinger_dfrn: ' . $webbie . ':' . print_r($links,true), LOGGER_DATA);
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if(count($links)) {
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foreach($links as $link) {
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if(empty($profile_link) && $link['@attributes']['rel'] === NAMESPACE_DFRN) {
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$profile_link = $link['@attributes']['href'];
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} elseif(empty($profile_link) && $link['@attributes']['rel'] === NAMESPACE_OSTATUSSUB) {
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$profile_link = 'stat:' . $link['@attributes']['template'];
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} elseif(empty($hcard) && $link['@attributes']['rel'] === 'http://microformats.org/profile/hcard') {
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$hcard = $link['@attributes']['href'];
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}
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}
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}
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return $profile_link;
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}
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/**
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* @brief Perform webfinger lookup on an email style address
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*
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* @param string $webbi An email style address
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* @param boolean $debug
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*
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* @return array of link attributes from the personal XRD file
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* empty array on error/failure
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*/
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function webfinger($webbie, $debug = false) {
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$host = '';
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if(strstr($webbie,'@')) {
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$host = substr($webbie,strpos($webbie,'@') + 1);
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}
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if(strlen($host)) {
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$tpl = fetch_lrdd_template($host);
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logger('webfinger: lrdd template: ' . $tpl);
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if(strlen($tpl)) {
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$pxrd = str_replace('{uri}', urlencode('acct:' . $webbie), $tpl);
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logger('webfinger: pxrd: ' . $pxrd);
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$links = fetch_xrd_links($pxrd);
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if(! count($links)) {
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// try with double slashes
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$pxrd = str_replace('{uri}', urlencode('acct://' . $webbie), $tpl);
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logger('webfinger: pxrd: ' . $pxrd);
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$links = fetch_xrd_links($pxrd);
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}
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return $links;
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}
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}
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return array();
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}
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function lrdd($uri, $debug = false) {
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$a = get_app();
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// default priority is host priority, host-meta first
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$priority = 'host';
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// All we have is an email address. Resource-priority is irrelevant
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// because our URI isn't directly resolvable.
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if(strstr($uri,'@')) {
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return(webfinger($uri));
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}
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// get the host meta file
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$host = @parse_url($uri);
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if($host) {
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$url = ((x($host,'scheme')) ? $host['scheme'] : 'http') . '://';
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$url .= $host['host'] . '/.well-known/host-meta' ;
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}
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else
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return array();
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logger('lrdd: constructed url: ' . $url);
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$xml = fetch_url($url);
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$headers = $a->get_curl_headers();
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if (! $xml)
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return array();
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logger('lrdd: host_meta: ' . $xml, LOGGER_DATA);
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if(! stristr($xml,'<xrd'))
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return array();
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$h = parse_xml_string($xml);
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if(! $h)
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|
return array();
|
|
|
|
$arr = xml::element_to_array($h);
|
|
|
|
if(isset($arr['xrd']['property'])) {
|
|
$property = $arr['crd']['property'];
|
|
if(! isset($property[0]))
|
|
$properties = array($property);
|
|
else
|
|
$properties = $property;
|
|
foreach($properties as $prop)
|
|
if((string) $prop['@attributes'] === 'http://lrdd.net/priority/resource')
|
|
$priority = 'resource';
|
|
}
|
|
|
|
// save the links in case we need them
|
|
|
|
$links = array();
|
|
|
|
if(isset($arr['xrd']['link'])) {
|
|
$link = $arr['xrd']['link'];
|
|
if(! isset($link[0]))
|
|
$links = array($link);
|
|
else
|
|
$links = $link;
|
|
}
|
|
|
|
// do we have a template or href?
|
|
|
|
if(count($links)) {
|
|
foreach($links as $link) {
|
|
if($link['@attributes']['rel'] && attribute_contains($link['@attributes']['rel'],'lrdd')) {
|
|
if(x($link['@attributes'],'template'))
|
|
$tpl = $link['@attributes']['template'];
|
|
elseif(x($link['@attributes'],'href'))
|
|
$href = $link['@attributes']['href'];
|
|
}
|
|
}
|
|
}
|
|
|
|
if((! isset($tpl)) || (! strpos($tpl,'{uri}')))
|
|
$tpl = '';
|
|
|
|
if($priority === 'host') {
|
|
if(strlen($tpl))
|
|
$pxrd = str_replace('{uri}', urlencode($uri), $tpl);
|
|
elseif(isset($href))
|
|
$pxrd = $href;
|
|
if(isset($pxrd)) {
|
|
logger('lrdd: (host priority) pxrd: ' . $pxrd);
|
|
$links = fetch_xrd_links($pxrd);
|
|
return $links;
|
|
}
|
|
|
|
$lines = explode("\n",$headers);
|
|
if(count($lines)) {
|
|
foreach($lines as $line) {
|
|
if((stristr($line,'link:')) && preg_match('/<([^>].*)>.*rel\=[\'\"]lrdd[\'\"]/',$line,$matches)) {
|
|
return(fetch_xrd_links($matches[1]));
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
// priority 'resource'
|
|
|
|
|
|
$html = fetch_url($uri);
|
|
$headers = $a->get_curl_headers();
|
|
logger('lrdd: headers=' . $headers, LOGGER_DEBUG);
|
|
|
|
// don't try and parse raw xml as html
|
|
if(! strstr($html,'<?xml')) {
|
|
require_once('library/HTML5/Parser.php');
|
|
|
|
try {
|
|
$dom = HTML5_Parser::parse($html);
|
|
} catch (DOMException $e) {
|
|
logger('lrdd: parse error: ' . $e);
|
|
}
|
|
|
|
if(isset($dom) && $dom) {
|
|
$items = $dom->getElementsByTagName('link');
|
|
foreach($items as $item) {
|
|
$x = $item->getAttribute('rel');
|
|
if($x == "lrdd") {
|
|
$pagelink = $item->getAttribute('href');
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if(isset($pagelink))
|
|
return(fetch_xrd_links($pagelink));
|
|
|
|
// next look in HTTP headers
|
|
|
|
$lines = explode("\n",$headers);
|
|
if(count($lines)) {
|
|
foreach($lines as $line) {
|
|
/// @TODO Alter the following regex to support multiple relations (space separated)
|
|
if((stristr($line,'link:')) && preg_match('/<([^>].*)>.*rel\=[\'\"]lrdd[\'\"]/',$line,$matches)) {
|
|
$pagelink = $matches[1];
|
|
break;
|
|
}
|
|
// don't try and run feeds through the html5 parser
|
|
if(stristr($line,'content-type:') && ((stristr($line,'application/atom+xml')) || (stristr($line,'application/rss+xml'))))
|
|
return array();
|
|
if(stristr($html,'<rss') || stristr($html,'<feed'))
|
|
return array();
|
|
}
|
|
}
|
|
|
|
if(isset($pagelink))
|
|
return(fetch_xrd_links($pagelink));
|
|
|
|
// If we haven't found any links, return the host xrd links (which we have already fetched)
|
|
|
|
if(isset($links))
|
|
return $links;
|
|
|
|
return array();
|
|
|
|
}
|
|
|
|
// Given a host name, locate the LRDD template from that
|
|
// host. Returns the LRDD template or an empty string on
|
|
// error/failure.
|
|
|
|
function fetch_lrdd_template($host) {
|
|
$tpl = '';
|
|
|
|
$url1 = 'https://' . $host . '/.well-known/host-meta' ;
|
|
$url2 = 'http://' . $host . '/.well-known/host-meta' ;
|
|
$links = fetch_xrd_links($url1);
|
|
logger('fetch_lrdd_template from: ' . $url1);
|
|
logger('template (https): ' . print_r($links,true));
|
|
if(! count($links)) {
|
|
logger('fetch_lrdd_template from: ' . $url2);
|
|
$links = fetch_xrd_links($url2);
|
|
logger('template (http): ' . print_r($links,true));
|
|
}
|
|
if(count($links)) {
|
|
foreach($links as $link)
|
|
if($link['@attributes']['rel'] && $link['@attributes']['rel'] === 'lrdd' && (!$link['@attributes']['type'] || $link['@attributes']['type'] === 'application/xrd+xml'))
|
|
$tpl = $link['@attributes']['template'];
|
|
}
|
|
if(! strpos($tpl,'{uri}'))
|
|
$tpl = '';
|
|
return $tpl;
|
|
}
|
|
|
|
/**
|
|
* @brief Given a URL, retrieve the page as an XRD document.
|
|
*
|
|
* @param string $url An url
|
|
* @return array of links
|
|
* return empty array on error/failure
|
|
*/
|
|
function fetch_xrd_links($url) {
|
|
|
|
$xrd_timeout = intval(get_config('system','xrd_timeout'));
|
|
$redirects = 0;
|
|
$xml = fetch_url($url,false,$redirects,(($xrd_timeout) ? $xrd_timeout : 20), "application/xrd+xml");
|
|
|
|
logger('fetch_xrd_links: ' . $xml, LOGGER_DATA);
|
|
|
|
if ((! $xml) || (! stristr($xml,'<xrd')))
|
|
return array();
|
|
|
|
// fix diaspora's bad xml
|
|
$xml = str_replace(array('href="','"/>'),array('href="','"/>'),$xml);
|
|
|
|
$h = parse_xml_string($xml);
|
|
if(! $h)
|
|
return array();
|
|
|
|
$arr = xml::element_to_array($h);
|
|
|
|
$links = array();
|
|
|
|
if(isset($arr['xrd']['link'])) {
|
|
$link = $arr['xrd']['link'];
|
|
if(! isset($link[0]))
|
|
$links = array($link);
|
|
else
|
|
$links = $link;
|
|
}
|
|
if(isset($arr['xrd']['alias'])) {
|
|
$alias = $arr['xrd']['alias'];
|
|
if(! isset($alias[0]))
|
|
$aliases = array($alias);
|
|
else
|
|
$aliases = $alias;
|
|
if(is_array($aliases) && count($aliases)) {
|
|
foreach($aliases as $alias) {
|
|
$links[]['@attributes'] = array('rel' => 'alias' , 'href' => $alias);
|
|
}
|
|
}
|
|
}
|
|
|
|
logger('fetch_xrd_links: ' . print_r($links,true), LOGGER_DATA);
|
|
|
|
return $links;
|
|
|
|
}
|
|
|
|
/**
|
|
* @brief Check URL to se if ts's real
|
|
*
|
|
* Take a URL from the wild, prepend http:// if necessary
|
|
* and check DNS to see if it's real (or check if is a valid IP address)
|
|
*
|
|
* @param string $url The URL to be validated
|
|
* @return boolean True if it's a valid URL, fals if something wrong with it
|
|
*/
|
|
function validate_url(&$url) {
|
|
|
|
if(get_config('system','disable_url_validation'))
|
|
return true;
|
|
// no naked subdomains (allow localhost for tests)
|
|
if(strpos($url,'.') === false && strpos($url,'/localhost/') === false)
|
|
return false;
|
|
if(substr($url,0,4) != 'http')
|
|
$url = 'http://' . $url;
|
|
$h = @parse_url($url);
|
|
|
|
if(($h) && (dns_get_record($h['host'], DNS_A + DNS_CNAME + DNS_PTR) || filter_var($h['host'], FILTER_VALIDATE_IP) )) {
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* @brief Checks that email is an actual resolvable internet address
|
|
*
|
|
* @param string $addr The email address
|
|
* @return boolean True if it's a valid email address, false if it's not
|
|
*/
|
|
function validate_email($addr) {
|
|
|
|
if(get_config('system','disable_email_validation'))
|
|
return true;
|
|
|
|
if(! strpos($addr,'@'))
|
|
return false;
|
|
$h = substr($addr,strpos($addr,'@') + 1);
|
|
|
|
if(($h) && (dns_get_record($h, DNS_A + DNS_CNAME + DNS_PTR + DNS_MX) || filter_var($h, FILTER_VALIDATE_IP) )) {
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* @brief Check if URL is allowed
|
|
*
|
|
* Check $url against our list of allowed sites,
|
|
* wildcards allowed. If allowed_sites is unset return true;
|
|
*
|
|
* @param string $url URL which get tested
|
|
* @return boolean True if url is allowed otherwise return false
|
|
*/
|
|
function allowed_url($url) {
|
|
|
|
$h = @parse_url($url);
|
|
|
|
if(! $h) {
|
|
return false;
|
|
}
|
|
|
|
$str_allowed = get_config('system','allowed_sites');
|
|
if(! $str_allowed)
|
|
return true;
|
|
|
|
$found = false;
|
|
|
|
$host = strtolower($h['host']);
|
|
|
|
// always allow our own site
|
|
|
|
if($host == strtolower($_SERVER['SERVER_NAME']))
|
|
return true;
|
|
|
|
$fnmatch = function_exists('fnmatch');
|
|
$allowed = explode(',',$str_allowed);
|
|
|
|
if(count($allowed)) {
|
|
foreach($allowed as $a) {
|
|
$pat = strtolower(trim($a));
|
|
if(($fnmatch && fnmatch($pat,$host)) || ($pat == $host)) {
|
|
$found = true;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
return $found;
|
|
}
|
|
|
|
/**
|
|
* @brief Check if email address is allowed to register here.
|
|
*
|
|
* Compare against our list (wildcards allowed).
|
|
*
|
|
* @param type $email
|
|
* @return boolean False if not allowed, true if allowed
|
|
* or if allowed list is not configured
|
|
*/
|
|
function allowed_email($email) {
|
|
|
|
|
|
$domain = strtolower(substr($email,strpos($email,'@') + 1));
|
|
if(! $domain)
|
|
return false;
|
|
|
|
$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) {
|
|
|
|
$a = get_app();
|
|
|
|
$avatar['size'] = 175;
|
|
$avatar['email'] = $email;
|
|
$avatar['url'] = '';
|
|
$avatar['success'] = false;
|
|
|
|
call_hooks('avatar_lookup', $avatar);
|
|
|
|
if(! $avatar['success'])
|
|
$avatar['url'] = $a->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]);
|
|
|
|
$hostname = str_replace('www.','',substr($a->get_baseurl(),strpos($a->get_baseurl(),'://')+3));
|
|
if(stristr($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'])
|
|
);
|
|
}
|
|
}
|
|
|
|
function original_url($url, $depth=1, $fetchbody = false) {
|
|
|
|
$a = get_app();
|
|
|
|
// Remove Analytics Data from Google and other tracking platforms
|
|
$urldata = parse_url($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);
|
|
}
|
|
|
|
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_Trim(), new Slinky_IsGd(), new Slinky_TinyURL()));
|
|
} else {
|
|
// setup a cascade of shortening services
|
|
// try to get a short link from these services
|
|
// in the order ur1.ca, trim, id.gd, tinyurl
|
|
$slinky->set_cascade(array(new Slinky_UR1ca(), new Slinky_Trim(), new Slinky_IsGd(), 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();
|
|
}
|