3 * @file src/Util/Network.php
5 namespace Friendica\Util;
8 use Friendica\Core\Addon;
9 use Friendica\Core\L10n;
10 use Friendica\Core\System;
11 use Friendica\Core\Config;
12 use Friendica\Network\Probe;
13 use Friendica\Object\Image;
14 use Friendica\Util\XML;
16 require_once 'library/slinky.php';
23 * If binary flag is true, return binary results.
24 * Set the cookiejar argument to a string (e.g. "/tmp/friendica-cookies.txt")
25 * to preserve cookies from one request to the next.
27 * @param string $url URL to fetch
28 * @param boolean $binary default false
29 * TRUE if asked to return binary results (file download)
30 * @param integer $redirects The recursion counter for internal use - default 0
31 * @param integer $timeout Timeout in seconds, default system config value or 60 seconds
32 * @param string $accept_content supply Accept: header with 'accept_content' as the value
33 * @param string $cookiejar Path to cookie jar file
35 * @return string The fetched content
37 public static function fetchURL($url, $binary = false, &$redirects = 0, $timeout = 0, $accept_content = null, $cookiejar = 0)
39 $ret = self::zFetchURL(
44 'accept_content'=>$accept_content,
45 'cookiejar'=>$cookiejar
53 * @brief fetches an URL.
55 * @param string $url URL to fetch
56 * @param boolean $binary default false
57 * TRUE if asked to return binary results (file download)
58 * @param int $redirects The recursion counter for internal use - default 0
59 * @param array $opts (optional parameters) assoziative array with:
60 * 'accept_content' => supply Accept: header with 'accept_content' as the value
61 * 'timeout' => int Timeout in seconds, default system config value or 60 seconds
62 * 'http_auth' => username:password
63 * 'novalidate' => do not validate SSL certs, default is to validate using our CA list
64 * 'nobody' => only return the header
65 * 'cookiejar' => path to cookie jar file
67 * @return array an assoziative array with:
68 * int 'return_code' => HTTP return code or 0 if timeout or failure
69 * boolean 'success' => boolean true (if HTTP 2xx result) or false
70 * string 'redirect_url' => in case of redirect, content was finally retrieved from this URL
71 * string 'header' => HTTP headers
72 * string 'body' => fetched content
74 public static function zFetchURL($url, $binary = false, &$redirects = 0, $opts = [])
76 $ret = ['return_code' => 0, 'success' => false, 'header' => '', 'info' => '', 'body' => ''];
78 $stamp1 = microtime(true);
82 if (blocked_url($url)) {
83 logger('z_fetch_url: domain of ' . $url . ' is blocked', LOGGER_DATA);
87 $ch = @curl_init($url);
89 if (($redirects > 8) || (!$ch)) {
93 @curl_setopt($ch, CURLOPT_HEADER, true);
95 if (x($opts, "cookiejar")) {
96 curl_setopt($ch, CURLOPT_COOKIEJAR, $opts["cookiejar"]);
97 curl_setopt($ch, CURLOPT_COOKIEFILE, $opts["cookiejar"]);
100 // These settings aren't needed. We're following the location already.
101 // @curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
102 // @curl_setopt($ch, CURLOPT_MAXREDIRS, 5);
104 if (x($opts, 'accept_content')) {
108 ['Accept: ' . $opts['accept_content']]
112 @curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
113 @curl_setopt($ch, CURLOPT_USERAGENT, $a->get_useragent());
115 $range = intval(Config::get('system', 'curl_range_bytes', 0));
118 @curl_setopt($ch, CURLOPT_RANGE, '0-' . $range);
121 // Without this setting it seems as if some webservers send compressed content
122 // This seems to confuse curl so that it shows this uncompressed.
123 /// @todo We could possibly set this value to "gzip" or something similar
124 curl_setopt($ch, CURLOPT_ENCODING, '');
126 if (x($opts, 'headers')) {
127 @curl_setopt($ch, CURLOPT_HTTPHEADER, $opts['headers']);
130 if (x($opts, 'nobody')) {
131 @curl_setopt($ch, CURLOPT_NOBODY, $opts['nobody']);
134 if (x($opts, 'timeout')) {
135 @curl_setopt($ch, CURLOPT_TIMEOUT, $opts['timeout']);
137 $curl_time = Config::get('system', 'curl_timeout', 60);
138 @curl_setopt($ch, CURLOPT_TIMEOUT, intval($curl_time));
141 // by default we will allow self-signed certs
142 // but you can override this
144 $check_cert = Config::get('system', 'verifyssl');
145 @curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, (($check_cert) ? true : false));
148 @curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);
151 $proxy = Config::get('system', 'proxy');
153 if (strlen($proxy)) {
154 @curl_setopt($ch, CURLOPT_HTTPPROXYTUNNEL, 1);
155 @curl_setopt($ch, CURLOPT_PROXY, $proxy);
156 $proxyuser = @Config::get('system', 'proxyuser');
158 if (strlen($proxyuser)) {
159 @curl_setopt($ch, CURLOPT_PROXYUSERPWD, $proxyuser);
163 if (Config::get('system', 'ipv4_resolve', false)) {
164 curl_setopt($ch, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V4);
168 @curl_setopt($ch, CURLOPT_BINARYTRANSFER, 1);
171 $a->set_curl_code(0);
173 // don't let curl abort the entire application
174 // if it throws any errors.
176 $s = @curl_exec($ch);
177 $curl_info = @curl_getinfo($ch);
179 // Special treatment for HTTP Code 416
180 // See https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/416
181 if (($curl_info['http_code'] == 416) && ($range > 0)) {
182 @curl_setopt($ch, CURLOPT_RANGE, '');
183 $s = @curl_exec($ch);
184 $curl_info = @curl_getinfo($ch);
187 if (curl_errno($ch) !== CURLE_OK) {
188 logger('fetch_url error fetching ' . $url . ': ' . curl_error($ch), LOGGER_NORMAL);
191 $ret['errno'] = curl_errno($ch);
194 $ret['info'] = $curl_info;
196 $http_code = $curl_info['http_code'];
198 logger('fetch_url ' . $url . ': ' . $http_code . " " . $s, LOGGER_DATA);
201 // Pull out multiple headers, e.g. proxy and continuation headers
202 // allow for HTTP/2.x without fixing code
204 while (preg_match('/^HTTP\/[1-2].+? [1-5][0-9][0-9]/', $base)) {
205 $chunk = substr($base, 0, strpos($base, "\r\n\r\n") + 4);
207 $base = substr($base, strlen($chunk));
210 $a->set_curl_code($http_code);
211 $a->set_curl_content_type($curl_info['content_type']);
212 $a->set_curl_headers($header);
214 if ($http_code == 301 || $http_code == 302 || $http_code == 303 || $http_code == 307) {
215 $new_location_info = @parse_url($curl_info['redirect_url']);
216 $old_location_info = @parse_url($curl_info['url']);
218 $newurl = $curl_info['redirect_url'];
220 if (($new_location_info['path'] == '') && ( $new_location_info['host'] != '')) {
221 $newurl = $new_location_info['scheme'] . '://' . $new_location_info['host'] . $old_location_info['path'];
226 if (preg_match('/(Location:|URI:)(.*?)\n/i', $header, $matches)) {
227 $newurl = trim(array_pop($matches));
229 if (strpos($newurl, '/') === 0) {
230 $newurl = $old_location_info["scheme"]."://".$old_location_info["host"].$newurl;
233 if (filter_var($newurl, FILTER_VALIDATE_URL)) {
236 return z_fetch_url($newurl, $binary, $redirects, $opts);
240 $a->set_curl_code($http_code);
241 $a->set_curl_content_type($curl_info['content_type']);
243 $rc = intval($http_code);
244 $ret['return_code'] = $rc;
245 $ret['success'] = (($rc >= 200 && $rc <= 299) ? true : false);
246 $ret['redirect_url'] = $url;
248 if (!$ret['success']) {
249 $ret['error'] = curl_error($ch);
250 $ret['debug'] = $curl_info;
251 logger('z_fetch_url: error: '.$url.': '.$ret['return_code'].' - '.$ret['error'], LOGGER_DEBUG);
252 logger('z_fetch_url: debug: '.print_r($curl_info, true), LOGGER_DATA);
255 $ret['body'] = substr($s, strlen($header));
256 $ret['header'] = $header;
258 if (x($opts, 'debug')) {
259 $ret['debug'] = $curl_info;
264 $a->save_timestamp($stamp1, 'network');
270 * @brief Send POST request to $url
272 * @param string $url URL to post
273 * @param mixed $params array of POST variables
274 * @param string $headers HTTP headers
275 * @param integer $redirects Recursion counter for internal use - default = 0
276 * @param integer $timeout The timeout in seconds, default system config value or 60 seconds
278 * @return string The content
280 public static function postURL($url, $params, $headers = null, &$redirects = 0, $timeout = 0)
282 $stamp1 = microtime(true);
284 if (blocked_url($url)) {
285 logger('post_url: domain of ' . $url . ' is blocked', LOGGER_DATA);
290 $ch = curl_init($url);
292 if (($redirects > 8) || (!$ch)) {
296 logger('post_url: start ' . $url, LOGGER_DATA);
298 curl_setopt($ch, CURLOPT_HEADER, true);
299 curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
300 curl_setopt($ch, CURLOPT_POST, 1);
301 curl_setopt($ch, CURLOPT_POSTFIELDS, $params);
302 curl_setopt($ch, CURLOPT_USERAGENT, $a->get_useragent());
304 if (Config::get('system', 'ipv4_resolve', false)) {
305 curl_setopt($ch, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V4);
308 if (intval($timeout)) {
309 curl_setopt($ch, CURLOPT_TIMEOUT, $timeout);
311 $curl_time = Config::get('system', 'curl_timeout', 60);
312 curl_setopt($ch, CURLOPT_TIMEOUT, intval($curl_time));
315 if (defined('LIGHTTPD')) {
316 if (!is_array($headers)) {
317 $headers = ['Expect:'];
319 if (!in_array('Expect:', $headers)) {
320 array_push($headers, 'Expect:');
326 curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
329 $check_cert = Config::get('system', 'verifyssl');
330 curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, (($check_cert) ? true : false));
333 @curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);
336 $proxy = Config::get('system', 'proxy');
338 if (strlen($proxy)) {
339 curl_setopt($ch, CURLOPT_HTTPPROXYTUNNEL, 1);
340 curl_setopt($ch, CURLOPT_PROXY, $proxy);
341 $proxyuser = Config::get('system', 'proxyuser');
342 if (strlen($proxyuser)) {
343 curl_setopt($ch, CURLOPT_PROXYUSERPWD, $proxyuser);
347 $a->set_curl_code(0);
349 // don't let curl abort the entire application
350 // if it throws any errors.
352 $s = @curl_exec($ch);
355 $curl_info = curl_getinfo($ch);
356 $http_code = $curl_info['http_code'];
358 logger('post_url: result ' . $http_code . ' - ' . $url, LOGGER_DATA);
362 // Pull out multiple headers, e.g. proxy and continuation headers
363 // allow for HTTP/2.x without fixing code
365 while (preg_match('/^HTTP\/[1-2].+? [1-5][0-9][0-9]/', $base)) {
366 $chunk = substr($base, 0, strpos($base, "\r\n\r\n") + 4);
368 $base = substr($base, strlen($chunk));
371 if ($http_code == 301 || $http_code == 302 || $http_code == 303 || $http_code == 307) {
373 preg_match('/(Location:|URI:)(.*?)\n/', $header, $matches);
374 $newurl = trim(array_pop($matches));
376 if (strpos($newurl, '/') === 0) {
377 $newurl = $old_location_info["scheme"] . "://" . $old_location_info["host"] . $newurl;
380 if (filter_var($newurl, FILTER_VALIDATE_URL)) {
382 logger('post_url: redirect ' . $url . ' to ' . $newurl);
383 return post_url($newurl, $params, $headers, $redirects, $timeout);
387 $a->set_curl_code($http_code);
389 $body = substr($s, strlen($header));
391 $a->set_curl_headers($header);
395 $a->save_timestamp($stamp1, 'network');
397 logger('post_url: end ' . $url, LOGGER_DATA);
404 * Outputs a basic dfrn XML status structure to STDOUT, with a <status> variable
405 * of $st and an optional text <message> of $message and terminates the current process.
407 public static function xmlStatus($st, $message = '')
409 $result = ['status' => $st];
411 if ($message != '') {
412 $result['message'] = $message;
416 logger('xml_status returning non_zero: ' . $st . " message=" . $message);
419 header("Content-type: text/xml");
421 $xmldata = ["result" => $result];
423 echo XML::fromArray($xmldata, $xml);
429 * @brief Send HTTP status header and exit.
431 * @param integer $val HTTP status result value
432 * @param array $description optional message
433 * 'title' => header title
434 * 'description' => optional message
436 public static function httpStatusExit($val, $description = [])
441 if (!isset($description["title"])) {
442 $description["title"] = $err." ".$val;
446 if ($val >= 200 && $val < 300) {
450 logger('http_status_exit ' . $val);
451 header($_SERVER["SERVER_PROTOCOL"] . ' ' . $val . ' ' . $err);
453 if (isset($description["title"])) {
454 $tpl = get_markup_template('http_status.tpl');
458 '$title' => $description["title"],
459 '$description' => $description["description"]]
467 * @brief Check URL to se if ts's real
469 * Take a URL from the wild, prepend http:// if necessary
470 * and check DNS to see if it's real (or check if is a valid IP address)
472 * @param string $url The URL to be validated
473 * @return string|boolean The actual working URL, false else
475 public static function validateURL($url)
477 if (Config::get('system', 'disable_url_validation')) {
481 // no naked subdomains (allow localhost for tests)
482 if (strpos($url, '.') === false && strpos($url, '/localhost/') === false) {
486 if (substr($url, 0, 4) != 'http') {
487 $url = 'http://' . $url;
490 /// @TODO Really suppress function outcomes? Why not find them + debug them?
491 $h = @parse_url($url);
493 if ((is_array($h)) && (@dns_get_record($h['host'], DNS_A + DNS_CNAME + DNS_PTR) || filter_var($h['host'], FILTER_VALIDATE_IP) )) {
501 * @brief Checks that email is an actual resolvable internet address
503 * @param string $addr The email address
504 * @return boolean True if it's a valid email address, false if it's not
506 public static function validateEmail($addr)
508 if (Config::get('system', 'disable_email_validation')) {
512 if (! strpos($addr, '@')) {
516 $h = substr($addr, strpos($addr, '@') + 1);
518 if (($h) && (dns_get_record($h, DNS_A + DNS_CNAME + DNS_PTR + DNS_MX) || filter_var($h, FILTER_VALIDATE_IP) )) {
525 * @brief Check if URL is allowed
527 * Check $url against our list of allowed sites,
528 * wildcards allowed. If allowed_sites is unset return true;
530 * @param string $url URL which get tested
531 * @return boolean True if url is allowed otherwise return false
533 public static function allowedURL($url)
535 $h = @parse_url($url);
541 $str_allowed = Config::get('system', 'allowed_sites');
542 if (! $str_allowed) {
548 $host = strtolower($h['host']);
550 // always allow our own site
551 if ($host == strtolower($_SERVER['SERVER_NAME'])) {
555 $fnmatch = function_exists('fnmatch');
556 $allowed = explode(',', $str_allowed);
558 if (count($allowed)) {
559 foreach ($allowed as $a) {
560 $pat = strtolower(trim($a));
561 if (($fnmatch && fnmatch($pat, $host)) || ($pat == $host)) {
571 * Checks if the provided url domain is on the domain blocklist.
572 * Returns true if it is or malformed URL, false if not.
574 * @param string $url The url to check the domain from
578 public static function blockedURL($url)
580 $h = @parse_url($url);
586 $domain_blocklist = Config::get('system', 'blocklist', []);
587 if (! $domain_blocklist) {
591 $host = strtolower($h['host']);
593 foreach ($domain_blocklist as $domain_block) {
594 if (strtolower($domain_block['domain']) == $host) {
603 * @brief Check if email address is allowed to register here.
605 * Compare against our list (wildcards allowed).
607 * @param string $email email address
608 * @return boolean False if not allowed, true if allowed
609 * or if allowed list is not configured
611 public static function allowedEmail($email)
613 $domain = strtolower(substr($email, strpos($email, '@') + 1));
618 $str_allowed = Config::get('system', 'allowed_email', '');
619 if (!x($str_allowed)) {
623 $allowed = explode(',', $str_allowed);
625 return allowed_domain($domain, $allowed);
629 * Checks for the existence of a domain in a domain list
631 * @brief Checks for the existence of a domain in a domain list
632 * @param string $domain
633 * @param array $domain_list
636 public static function allowedDomain($domain, array $domain_list)
640 foreach ($domain_list as $item) {
641 $pat = strtolower(trim($item));
642 if (fnmatch($pat, $domain) || ($pat == $domain)) {
651 public static function avatarImg($email)
653 $avatar['size'] = 175;
654 $avatar['email'] = $email;
656 $avatar['success'] = false;
658 Addon::callHooks('avatar_lookup', $avatar);
660 if (! $avatar['success']) {
661 $avatar['url'] = System::baseUrl() . '/images/person-175.jpg';
664 logger('Avatar: ' . $avatar['email'] . ' ' . $avatar['url'], LOGGER_DEBUG);
665 return $avatar['url'];
668 public static function parseXmlString($s, $strict = true)
670 // the "strict" parameter is deactivated
672 /// @todo Move this function to the xml class
673 libxml_use_internal_errors(true);
675 $x = @simplexml_load_string($s);
677 logger('libxml: parse: error: ' . $s, LOGGER_DATA);
678 foreach (libxml_get_errors() as $err) {
679 logger('libxml: parse: ' . $err->code." at ".$err->line.":".$err->column." : ".$err->message, LOGGER_DATA);
681 libxml_clear_errors();
686 public static function scaleExternalImages($srctext, $include_link = true, $scale_replace = false)
688 // Suppress "view full size"
689 if (intval(Config::get('system', 'no_view_full_size'))) {
690 $include_link = false;
693 // Picture addresses can contain special characters
694 $s = htmlspecialchars_decode($srctext);
697 $c = preg_match_all('/\[img.*?\](.*?)\[\/img\]/ism', $s, $matches, PREG_SET_ORDER);
699 foreach ($matches as $mtch) {
700 logger('scale_external_image: ' . $mtch[1]);
702 $hostname = str_replace('www.', '', substr(System::baseUrl(), strpos(System::baseUrl(), '://') + 3));
703 if (stristr($mtch[1], $hostname)) {
707 // $scale_replace, if passed, is an array of two elements. The
708 // first is the name of the full-size image. The second is the
709 // name of a remote, scaled-down version of the full size image.
710 // This allows Friendica to display the smaller remote image if
711 // one exists, while still linking to the full-size image
712 if ($scale_replace) {
713 $scaled = str_replace($scale_replace[0], $scale_replace[1], $mtch[1]);
717 $i = fetch_url($scaled);
722 // guess mimetype from headers or filename
723 $type = Image::guessType($mtch[1], true);
726 $Image = new Image($i, $type);
727 if ($Image->isValid()) {
728 $orig_width = $Image->getWidth();
729 $orig_height = $Image->getHeight();
731 if ($orig_width > 640 || $orig_height > 640) {
732 $Image->scaleDown(640);
733 $new_width = $Image->getWidth();
734 $new_height = $Image->getHeight();
735 logger('scale_external_images: ' . $orig_width . '->' . $new_width . 'w ' . $orig_height . '->' . $new_height . 'h' . ' match: ' . $mtch[0], LOGGER_DEBUG);
738 '[img=' . $new_width . 'x' . $new_height. ']' . $scaled . '[/img]'
739 . "\n" . (($include_link)
740 ? '[url=' . $mtch[1] . ']' . L10n::t('view full size') . '[/url]' . "\n"
744 logger('scale_external_images: new string: ' . $s, LOGGER_DEBUG);
751 // replace the special char encoding
752 $s = htmlspecialchars($s, ENT_NOQUOTES, 'UTF-8');
756 public static function fixContactSslPolicy(&$contact, $new_policy)
758 $ssl_changed = false;
759 if ((intval($new_policy) == SSL_POLICY_SELFSIGN || $new_policy === 'self') && strstr($contact['url'], 'https:')) {
761 $contact['url'] = str_replace('https:', 'http:', $contact['url']);
762 $contact['request'] = str_replace('https:', 'http:', $contact['request']);
763 $contact['notify'] = str_replace('https:', 'http:', $contact['notify']);
764 $contact['poll'] = str_replace('https:', 'http:', $contact['poll']);
765 $contact['confirm'] = str_replace('https:', 'http:', $contact['confirm']);
766 $contact['poco'] = str_replace('https:', 'http:', $contact['poco']);
769 if ((intval($new_policy) == SSL_POLICY_FULL || $new_policy === 'full') && strstr($contact['url'], 'http:')) {
771 $contact['url'] = str_replace('http:', 'https:', $contact['url']);
772 $contact['request'] = str_replace('http:', 'https:', $contact['request']);
773 $contact['notify'] = str_replace('http:', 'https:', $contact['notify']);
774 $contact['poll'] = str_replace('http:', 'https:', $contact['poll']);
775 $contact['confirm'] = str_replace('http:', 'https:', $contact['confirm']);
776 $contact['poco'] = str_replace('http:', 'https:', $contact['poco']);
780 $fields = ['url' => $contact['url'], 'request' => $contact['request'],
781 'notify' => $contact['notify'], 'poll' => $contact['poll'],
782 'confirm' => $contact['confirm'], 'poco' => $contact['poco']];
783 dba::update('contact', $fields, ['id' => $contact['id']]);
788 * @brief Remove Google Analytics and other tracking platforms params from URL
790 * @param string $url Any user-submitted URL that may contain tracking params
791 * @return string The same URL stripped of tracking parameters
793 public static function stripTrackingQueryParams($url)
795 $urldata = parse_url($url);
796 if (is_string($urldata["query"])) {
797 $query = $urldata["query"];
798 parse_str($query, $querydata);
800 if (is_array($querydata)) {
801 foreach ($querydata as $param => $value) {
805 "utm_source", "utm_medium", "utm_term", "utm_content", "utm_campaign",
806 "wt_mc", "pk_campaign", "pk_kwd", "mc_cid", "mc_eid",
807 "fb_action_ids", "fb_action_types", "fb_ref",
809 "woo_campaign", "woo_source", "woo_medium", "woo_content", "woo_term"]
812 $pair = $param . "=" . urlencode($value);
813 $url = str_replace($pair, "", $url);
815 // Second try: if the url isn't encoded completely
816 $pair = $param . "=" . str_replace(" ", "+", $value);
817 $url = str_replace($pair, "", $url);
819 // Third try: Maybey the url isn't encoded at all
820 $pair = $param . "=" . $value;
821 $url = str_replace($pair, "", $url);
823 $url = str_replace(["?&", "&&"], ["?", ""], $url);
828 if (substr($url, -1, 1) == "?") {
829 $url = substr($url, 0, -1);
837 * @brief Returns the original URL of the provided URL
839 * This function strips tracking query params and follows redirections, either
840 * through HTTP code or meta refresh tags. Stops after 10 redirections.
842 * @todo Remove the $fetchbody parameter that generates an extraneous HEAD request
844 * @see ParseUrl::getSiteinfo
846 * @param string $url A user-submitted URL
847 * @param int $depth The current redirection recursion level (internal)
848 * @param bool $fetchbody Wether to fetch the body or not after the HEAD requests
849 * @return string A canonical URL
851 public static function originalURL($url, $depth = 1, $fetchbody = false)
855 $url = strip_tracking_query_params($url);
861 $url = trim($url, "'");
863 $stamp1 = microtime(true);
866 curl_setopt($ch, CURLOPT_URL, $url);
867 curl_setopt($ch, CURLOPT_HEADER, 1);
868 curl_setopt($ch, CURLOPT_NOBODY, 1);
869 curl_setopt($ch, CURLOPT_TIMEOUT, 10);
870 curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
871 curl_setopt($ch, CURLOPT_USERAGENT, $a->get_useragent());
874 $curl_info = @curl_getinfo($ch);
875 $http_code = $curl_info['http_code'];
878 $a->save_timestamp($stamp1, "network");
880 if ($http_code == 0) {
884 if ((($curl_info['http_code'] == "301") || ($curl_info['http_code'] == "302"))
885 && (($curl_info['redirect_url'] != "") || ($curl_info['location'] != ""))
887 if ($curl_info['redirect_url'] != "") {
888 return(original_url($curl_info['redirect_url'], ++$depth, $fetchbody));
890 return(original_url($curl_info['location'], ++$depth, $fetchbody));
894 // Check for redirects in the meta elements of the body if there are no redirects in the header.
896 return(original_url($url, ++$depth, true));
899 // if the file is too large then exit
900 if ($curl_info["download_content_length"] > 1000000) {
904 // if it isn't a HTML file then exit
905 if (($curl_info["content_type"] != "") && !strstr(strtolower($curl_info["content_type"]), "html")) {
909 $stamp1 = microtime(true);
912 curl_setopt($ch, CURLOPT_URL, $url);
913 curl_setopt($ch, CURLOPT_HEADER, 0);
914 curl_setopt($ch, CURLOPT_NOBODY, 0);
915 curl_setopt($ch, CURLOPT_TIMEOUT, 10);
916 curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
917 curl_setopt($ch, CURLOPT_USERAGENT, $a->get_useragent());
919 $body = curl_exec($ch);
922 $a->save_timestamp($stamp1, "network");
924 if (trim($body) == "") {
928 // Check for redirect in meta elements
929 $doc = new DOMDocument();
930 @$doc->loadHTML($body);
932 $xpath = new DomXPath($doc);
934 $list = $xpath->query("//meta[@content]");
935 foreach ($list as $node) {
937 if ($node->attributes->length) {
938 foreach ($node->attributes as $attribute) {
939 $attr[$attribute->name] = $attribute->value;
943 if (@$attr["http-equiv"] == 'refresh') {
944 $path = $attr["content"];
945 $pathinfo = explode(";", $path);
946 foreach ($pathinfo as $value) {
947 if (substr(strtolower($value), 0, 4) == "url=") {
948 return(original_url(substr($value, 4), ++$depth));
957 public static function shortLink($url)
959 $slinky = new Slinky($url);
960 $yourls_url = Config::get('yourls', 'url1');
962 $yourls_username = Config::get('yourls', 'username1');
963 $yourls_password = Config::get('yourls', 'password1');
964 $yourls_ssl = Config::get('yourls', 'ssl1');
965 $yourls = new Slinky_YourLS();
966 $yourls->set('username', $yourls_username);
967 $yourls->set('password', $yourls_password);
968 $yourls->set('ssl', $yourls_ssl);
969 $yourls->set('yourls-url', $yourls_url);
970 $slinky->set_cascade([$yourls, new Slinky_Ur1ca(), new Slinky_TinyURL()]);
972 // setup a cascade of shortening services
973 // try to get a short link from these services
974 // in the order ur1.ca, tinyurl
975 $slinky->set_cascade([new Slinky_Ur1ca(), new Slinky_TinyURL()]);
977 return $slinky->short();
981 * @brief Encodes content to json
983 * This function encodes an array to json format
984 * and adds an application/json HTTP header to the output.
985 * After finishing the process is getting killed.
987 * @param array $x The input content
989 public static function jsonReturnAndDie($x)
991 header("content-type: application/json");
992 echo json_encode($x);
997 * @brief Find the matching part between two url
999 * @param string $url1
1000 * @param string $url2
1001 * @return string The matching part
1003 public static function matchingURL($url1, $url2)
1005 if (($url1 == "") || ($url2 == "")) {
1009 $url1 = normalise_link($url1);
1010 $url2 = normalise_link($url2);
1012 $parts1 = parse_url($url1);
1013 $parts2 = parse_url($url2);
1015 if (!isset($parts1["host"]) || !isset($parts2["host"])) {
1019 if ($parts1["scheme"] != $parts2["scheme"]) {
1023 if ($parts1["host"] != $parts2["host"]) {
1027 if ($parts1["port"] != $parts2["port"]) {
1031 $match = $parts1["scheme"]."://".$parts1["host"];
1033 if ($parts1["port"]) {
1034 $match .= ":".$parts1["port"];
1037 $pathparts1 = explode("/", $parts1["path"]);
1038 $pathparts2 = explode("/", $parts2["path"]);
1043 $path1 = $pathparts1[$i];
1044 $path2 = $pathparts2[$i];
1046 if ($path1 == $path2) {
1047 $path .= $path1."/";
1049 } while (($path1 == $path2) && ($i++ <= count($pathparts1)));
1053 return normalise_link($match);
1057 * @brief Glue url parts together
1059 * @param array $parsed URL parts
1061 * @return string The glued URL
1063 public static function unParseURL($parsed)
1065 $get = function ($key) use ($parsed) {
1066 return isset($parsed[$key]) ? $parsed[$key] : null;
1069 $pass = $get('pass');
1070 $user = $get('user');
1071 $userinfo = $pass !== null ? "$user:$pass" : $user;
1072 $port = $get('port');
1073 $scheme = $get('scheme');
1074 $query = $get('query');
1075 $fragment = $get('fragment');
1076 $authority = ($userinfo !== null ? $userinfo."@" : '') .
1078 ($port ? ":$port" : '');
1080 return (strlen($scheme) ? $scheme.":" : '') .
1081 (strlen($authority) ? "//".$authority : '') .
1083 (strlen($query) ? "?".$query : '') .
1084 (strlen($fragment) ? "#".$fragment : '');