X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=include%2Fnetwork.php;h=b0e71fab7f8b93ecbc520c9af4e14e05c713992d;hb=1bf089e4247a996728746a6407895c5ce61b75ef;hp=b238dbff657cd23d083d92dd5c4f80f765afeb5c;hpb=432f96b6461745f2ac7915750c322359d435bc4b;p=friendica.git diff --git a/include/network.php b/include/network.php index b238dbff65..b0e71fab7f 100644 --- a/include/network.php +++ b/include/network.php @@ -4,16 +4,18 @@ * @file include/network.php */ -require_once("include/xml.php"); +use \Friendica\Core\Config; +require_once("include/xml.php"); +require_once('include/Probe.php'); /** * @brief Curl wrapper - * + * * If binary flag is true, return binary results. * Set the cookiejar argument to a string (e.g. "/tmp/friendica-cookies.txt") * to preserve cookies from one request to the next. - * + * * @param string $url URL to fetch * @param boolean $binary default false * TRUE if asked to return binary results (file download) @@ -21,7 +23,7 @@ require_once("include/xml.php"); * @param integer $timeout Timeout in seconds, default system config value or 60 seconds * @param string $accept_content supply Accept: header with 'accept_content' as the value * @param string $cookiejar Path to cookie jar file - * + * * @return string The fetched content */ function fetch_url($url,$binary = false, &$redirects = 0, $timeout = 0, $accept_content=Null, $cookiejar = 0) { @@ -93,7 +95,10 @@ function z_fetch_url($url,$binary = false, &$redirects = 0, $opts=array()) { @curl_setopt($ch, CURLOPT_RETURNTRANSFER,true); @curl_setopt($ch, CURLOPT_USERAGENT, $a->get_useragent()); - + $range = intval(Config::get('system', 'curl_range_bytes', 0)); + if ($range > 0) { + @curl_setopt($ch, CURLOPT_RANGE, '0-'.$range); + } if(x($opts,'headers')){ @curl_setopt($ch, CURLOPT_HTTPHEADER, $opts['headers']); @@ -113,7 +118,9 @@ function z_fetch_url($url,$binary = false, &$redirects = 0, $opts=array()) { $check_cert = get_config('system','verifyssl'); @curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, (($check_cert) ? true : false)); - @curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, (($check_cert) ? 2 : false)); + if ($check_cert) { + @curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2); + } $prx = get_config('system','proxy'); if(strlen($prx)) { @@ -136,6 +143,8 @@ function z_fetch_url($url,$binary = false, &$redirects = 0, $opts=array()) { logger('fetch_url error fetching '.$url.': '.curl_error($ch), LOGGER_NORMAL); } + $ret['errno'] = curl_errno($ch); + $base = $s; $curl_info = @curl_getinfo($ch); @@ -213,13 +222,13 @@ function z_fetch_url($url,$binary = false, &$redirects = 0, $opts=array()) { /** * @brief Post request to $url - * + * * @param string $url URL to post * @param mixed $params * @param string $headers HTTP headers * @param integer $redirects Recursion counter for internal use - default = 0 * @param integer $timeout The timeout in seconds, default system config value or 60 seconds - * + * * @return string The content */ function post_url($url,$params, $headers = null, &$redirects = 0, $timeout = 0) { @@ -260,7 +269,9 @@ function post_url($url,$params, $headers = null, &$redirects = 0, $timeout = 0) $check_cert = get_config('system','verifyssl'); curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, (($check_cert) ? true : false)); - curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, (($check_cert) ? 2 : false)); + if ($check_cert) { + @curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2); + } $prx = get_config('system','proxy'); if(strlen($prx)) { curl_setopt($ch, CURLOPT_HTTPPROXYTUNNEL, 1); @@ -338,7 +349,6 @@ function xml_status($st, $message = '') { killme(); } - /** * @brief Send HTTP status header and exit. * @@ -348,6 +358,14 @@ function xml_status($st, $message = '') { * 'description' => optional message */ +/** + * @brief Send HTTP status header and exit. + * + * @param integer $val HTTP status result value + * @param array $description optional message + * 'title' => header title + * 'description' => optional message + */ function http_status_exit($val, $description = array()) { $err = ''; if($val >= 400) { @@ -371,367 +389,39 @@ function http_status_exit($val, $description = array()) { } -// Given an email style address, perform webfinger lookup and -// return the resulting DFRN profile URL, or if no DFRN profile URL -// is located, returns an OStatus subscription template (prefixed -// with the string 'stat:' to identify it as on OStatus template). -// If this isn't an email style address just return $webbie. -// Return an empty string if email-style addresses but webfinger fails, -// or if the resultant personal XRD doesn't contain a supported -// subscription/friend-request attribute. - -// amended 7/9/2011 to return an hcard which could save potentially loading -// a lengthy content page to scrape dfrn attributes - -function webfinger_dfrn($webbie,&$hcard) { - if(! strstr($webbie,'@')) { - return $webbie; - } - $profile_link = ''; - - $links = webfinger($webbie); - logger('webfinger_dfrn: ' . $webbie . ':' . print_r($links,true), LOGGER_DATA); - if(count($links)) { - foreach($links as $link) { - if(empty($profile_link) && $link['@attributes']['rel'] === NAMESPACE_DFRN) { - $profile_link = $link['@attributes']['href']; - } elseif(empty($profile_link) && $link['@attributes']['rel'] === NAMESPACE_OSTATUSSUB) { - $profile_link = 'stat:' . $link['@attributes']['template']; - } elseif(empty($hcard) && $link['@attributes']['rel'] === 'http://microformats.org/profile/hcard') { - $hcard = $link['@attributes']['href']; - } - } - } - return $profile_link; -} - -/** - * @brief Perform webfinger lookup on an email style address - * - * @param string $webbi An email style address - * @param boolean $debug - * - * @return array of link attributes from the personal XRD file - * empty array on error/failure - */ -function webfinger($webbie, $debug = false) { - $host = ''; - if(strstr($webbie,'@')) { - $host = substr($webbie,strpos($webbie,'@') + 1); - } - if(strlen($host)) { - $tpl = fetch_lrdd_template($host); - logger('webfinger: lrdd template: ' . $tpl); - if(strlen($tpl)) { - $pxrd = str_replace('{uri}', urlencode('acct:' . $webbie), $tpl); - logger('webfinger: pxrd: ' . $pxrd); - $links = fetch_xrd_links($pxrd); - if(! count($links)) { - // try with double slashes - $pxrd = str_replace('{uri}', urlencode('acct://' . $webbie), $tpl); - logger('webfinger: pxrd: ' . $pxrd); - $links = fetch_xrd_links($pxrd); - } - return $links; - } - } - return array(); -} - -function lrdd($uri, $debug = false) { - - $a = get_app(); - - // default priority is host priority, host-meta first - - $priority = 'host'; - - // All we have is an email address. Resource-priority is irrelevant - // because our URI isn't directly resolvable. - - if(strstr($uri,'@')) { - return(webfinger($uri)); - } - - // get the host meta file - - $host = @parse_url($uri); - - if($host) { - $url = ((x($host,'scheme')) ? $host['scheme'] : 'http') . '://'; - $url .= $host['host'] . '/.well-known/host-meta' ; - } - else - return array(); - - logger('lrdd: constructed url: ' . $url); - - $xml = fetch_url($url); - - $headers = $a->get_curl_headers(); - - if (! $xml) - return array(); - - logger('lrdd: host_meta: ' . $xml, LOGGER_DATA); - - if(! stristr($xml,'].*)>.*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,'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($html,''),array('href="','"/>'),$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) { - logger(sprintf('[%s:%d]: url=%s - CALLED!', __FUNCTION__, __LINE__, $url), LOGGER_TRACE); - if(get_config('system','disable_url_validation')) - logger(sprintf('[%s:%d]: URL validation disabled, returning TRUE - EXIT!', __FUNCTION__, __LINE__), LOGGER_TRACE); return true; // no naked subdomains (allow localhost for tests) if(strpos($url,'.') === false && strpos($url,'/localhost/') === false) - logger(sprintf('[%s:%d]: URL is not complete, returning FALSE - EXIT!', __FUNCTION__, __LINE__), LOGGER_TRACE); return false; - if(substr($url,0,4) != 'http' && substr($url,0,5) != 'https') + if(substr($url,0,4) != 'http') $url = 'http://' . $url; - logger(sprintf('[%s:%d]: url=%s - before parse_url() ...', __FUNCTION__, __LINE__, $url), LOGGER_DEBUG); - + /// @TODO Really supress function outcomes? Why not find them + debug them? $h = @parse_url($url); - logger(sprintf('[%s:%d]: h[]=%s', __FUNCTION__, __LINE__, gettype($h)), LOGGER_DEBUG); - if((is_array($h)) && (dns_get_record($h['host'], DNS_A + DNS_CNAME + DNS_PTR) || filter_var($h['host'], FILTER_VALIDATE_IP) )) { - logger(sprintf('[%s:%d]: URL %s validated. - EXIT!', __FUNCTION__, __LINE__, $url), LOGGER_TRACE); return true; } - logger(sprintf('[%s:%d]: URL %s maybe not valid - EXIT!', __FUNCTION__, __LINE__, $url), LOGGER_TRACE); return false; } /** * @brief Checks that email is an actual resolvable internet address - * + * * @param string $addr The email address * @return boolean True if it's a valid email address, false if it's not */ @@ -752,10 +442,10 @@ function validate_email($addr) { /** * @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 $url URL which get tested * @return boolean True if url is allowed otherwise return false */ @@ -797,9 +487,9 @@ function allowed_url($url) { /** * @brief Check if email address is allowed to register here. - * + * * Compare against our list (wildcards allowed). - * + * * @param type $email * @return boolean False if not allowed, true if allowed * or if allowed list is not configured @@ -834,8 +524,6 @@ function allowed_email($email) { function avatar_img($email) { - $a = get_app(); - $avatar['size'] = 175; $avatar['email'] = $email; $avatar['url'] = ''; @@ -843,8 +531,9 @@ function avatar_img($email) { call_hooks('avatar_lookup', $avatar); - if(! $avatar['success']) - $avatar['url'] = $a->get_baseurl() . '/images/person-175.jpg'; + if (! $avatar['success']) { + $avatar['url'] = App::get_baseurl() . '/images/person-175.jpg'; + } logger('Avatar: ' . $avatar['email'] . ' ' . $avatar['url'], LOGGER_DEBUG); return $avatar['url']; @@ -863,10 +552,11 @@ function parse_xml_string($s,$strict = true) { libxml_use_internal_errors(true); $x = @simplexml_load_string($s2); - if(! $x) { + if (! $x) { logger('libxml: parse: error: ' . $s2, LOGGER_DATA); - foreach(libxml_get_errors() as $err) + foreach (libxml_get_errors() as $err) { logger('libxml: parse: ' . $err->code." at ".$err->line.":".$err->column." : ".$err->message, LOGGER_DATA); + } libxml_clear_errors(); } return $x; @@ -875,8 +565,9 @@ function parse_xml_string($s,$strict = true) { function scale_external_images($srctext, $include_link = true, $scale_replace = false) { // Suppress "view full size" - if (intval(get_config('system','no_view_full_size'))) + if (intval(get_config('system','no_view_full_size'))) { $include_link = false; + } $a = get_app(); @@ -885,38 +576,41 @@ function scale_external_images($srctext, $include_link = true, $scale_replace = $matches = null; $c = preg_match_all('/\[img.*?\](.*?)\[\/img\]/ism',$s,$matches,PREG_SET_ORDER); - if($c) { + if ($c) { require_once('include/Photo.php'); - foreach($matches as $mtch) { + foreach ($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)) + $hostname = str_replace('www.','',substr(App::get_baseurl(),strpos(App::get_baseurl(),'://')+3)); + if (stristr($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) + if ($scale_replace) { $scaled = str_replace($scale_replace[0], $scale_replace[1], $mtch[1]); - else + } else { $scaled = $mtch[1]; - $i = @fetch_url($scaled); - if(! $i) + } + $i = fetch_url($scaled); + if (! $i) { return $srctext; + } // guess mimetype from headers or filename $type = guess_image_type($mtch[1],true); - if($i) { + if ($i) { $ph = new Photo($i, $type); - if($ph->is_valid()) { + if ($ph->is_valid()) { $orig_width = $ph->getWidth(); $orig_height = $ph->getHeight(); - if($orig_width > 640 || $orig_height > 640) { + if ($orig_width > 640 || $orig_height > 640) { $ph->scaleImage(640); $new_width = $ph->getWidth(); @@ -942,7 +636,7 @@ function scale_external_images($srctext, $include_link = true, $scale_replace = function fix_contact_ssl_policy(&$contact,$new_policy) { $ssl_changed = false; - if((intval($new_policy) == SSL_POLICY_SELFSIGN || $new_policy === 'self') && strstr($contact['url'],'https:')) { + 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']); @@ -952,7 +646,7 @@ function fix_contact_ssl_policy(&$contact,$new_policy) { $contact['poco'] = str_replace('https:','http:',$contact['poco']); } - if((intval($new_policy) == SSL_POLICY_FULL || $new_policy === 'full') && strstr($contact['url'],'http:')) { + 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']); @@ -962,15 +656,15 @@ function fix_contact_ssl_policy(&$contact,$new_policy) { $contact['poco'] = str_replace('http:','https:',$contact['poco']); } - if($ssl_changed) { - q("update contact set - url = '%s', - request = '%s', - notify = '%s', - poll = '%s', - confirm = '%s', - poco = '%s' - where id = %d limit 1", + if ($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($contact['notify']), @@ -982,42 +676,71 @@ function fix_contact_ssl_policy(&$contact,$new_policy) { } } -function original_url($url, $depth=1, $fetchbody = false) { - - $a = get_app(); - - // Remove Analytics Data from Google and other tracking platforms +/** + * @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 (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); + $pair = $param . "=" . urlencode($value); $url = str_replace($pair, "", $url); // Second try: if the url isn't encoded completely - $pair = $param."=".str_replace(" ", "+", $value); + $pair = $param . "=" . str_replace(" ", "+", $value); $url = str_replace($pair, "", $url); // Third try: Maybey the url isn't encoded at all - $pair = $param."=".$value; + $pair = $param . "=" . $value; $url = str_replace($pair, "", $url); $url = str_replace(array("?&", "&&"), array("?", ""), $url); } + } + } - if (substr($url, -1, 1) == "?") + 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); @@ -1121,23 +844,23 @@ function short_link($url) { $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())); + $slinky->set_cascade(array($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, trim, id.gd, tinyurl - $slinky->set_cascade(array(new Slinky_UR1ca(), new Slinky_Trim(), new Slinky_IsGd(), new Slinky_TinyURL())); + // 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) { @@ -1145,3 +868,57 @@ function json_return_and_die($x) { echo json_encode($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); +}