2020-04-18 00:51:33 +02:00
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<?php
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2021-07-28 17:13:10 +02:00
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/*
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* Configured URL patterns :
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*
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* Example :
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*
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* array (
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* '|get/(?P<name>[a-zA-Z0-9]+)$|' => array (
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* 'handler' => 'get',
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* 'authenticated' => true,
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* 'api_mode' => false,
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* 'methods' => array('GET'),
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* ),
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* '|get/all$|' => => array (
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* 'handler' => 'get_all',
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* 'authenticated' => true,
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* 'api_mode' => false,
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* 'methods' => array('GET', 'POST'),
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* ),
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* )
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*
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*/
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2020-04-18 00:51:33 +02:00
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$url_patterns =array();
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2021-07-28 17:13:10 +02:00
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/**
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* Add an URL pattern
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*
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2022-04-24 17:43:44 +02:00
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* @param $pattern string The URL pattern (required)
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* @param $handler callable The URL pattern handler (must be callable, required)
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* @param $authenticated boolean Permit to define if this URL is accessible only for
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* authenticated users (optional, default: true)
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* @param $override boolean Allow override if a command already exists with the
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* same name (optional, default: false)
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* @param $api_mode boolean Enable API mode (optional, default: false)
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* @param $methods array|null HTTP method (optional, default: array('GET', 'POST'))
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2021-07-28 17:13:10 +02:00
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**/
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2022-04-24 17:43:44 +02:00
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function add_url_handler($pattern, $handler=null, $authenticated=false, $override=true,
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$api_mode=false, $methods=null) {
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2021-07-28 17:13:10 +02:00
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if (is_null($methods))
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$methods = array('GET', 'POST');
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elseif (!is_array($methods))
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$methods = array($methods);
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global $url_patterns;
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if (is_array($pattern)) {
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if (is_null($handler))
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foreach($pattern as $p => $h)
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add_url_handler($p, $h, $authenticated, $override, $api_mode, $methods);
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else
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foreach($pattern as $p)
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add_url_handler($p, $handler, $authenticated, $override, $api_mode, $methods);
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}
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else {
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if (!isset($url_patterns[$pattern])) {
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$url_patterns[$pattern] = array(
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'handler' => $handler,
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'authenticated' => $authenticated,
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'api_mode' => $api_mode,
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'methods' => $methods,
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);
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}
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elseif ($override) {
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2022-04-24 17:43:44 +02:00
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logging(
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'DEBUG',
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"URL : override pattern '$pattern' with handler '$handler' ".
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"(old handler = '".$url_patterns[$pattern]."')");
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2021-07-28 17:13:10 +02:00
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$url_patterns[$pattern] = array(
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'handler' => $handler,
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'authenticated' => $authenticated,
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'api_mode' => $api_mode,
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'methods' => $methods,
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);
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}
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else {
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logging('DEBUG', "URL : pattern '$pattern' already defined : do not override.");
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}
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}
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2020-04-18 00:51:33 +02:00
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}
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/*
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* Error 404 page
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*/
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2021-07-28 17:13:10 +02:00
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2022-04-24 17:43:44 +02:00
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/**
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* Error 404 handler
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*
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* @param $request UrlRequest|null The request (optional, default: null)
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*
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* @return void
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**/
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2021-07-28 17:13:10 +02:00
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function error_404($request=null) {
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display_template('error_404.tpl', _("Whoops ! Page not found"));
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exit();
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2020-04-18 00:51:33 +02:00
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}
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$_404_url_handler = 'error_404';
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function set_404_url_handler($handler=null) {
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2021-07-28 17:13:10 +02:00
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global $_404_url_handler;
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$_404_url_handler = $handler;
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2020-04-18 00:51:33 +02:00
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}
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2022-04-24 17:43:44 +02:00
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/**
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2021-07-28 17:13:10 +02:00
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* Interprets the requested URL and return the corresponding UrlRequest object
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2020-04-18 00:51:33 +02:00
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*
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2022-04-24 17:43:44 +02:00
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* @param $default_url string|null The default URL if current one does not
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* match with any configured pattern.
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2020-04-18 00:51:33 +02:00
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*
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2022-04-24 17:43:44 +02:00
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* @return UrlRequest The UrlRequest object corresponding to the the requested URL.
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2021-07-28 17:13:10 +02:00
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*/
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function get_request($default_url=null) {
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global $url_patterns, $_404_url_handler;
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$current_url = get_current_url();
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if ($current_url === false) {
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2022-04-24 17:43:44 +02:00
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logging(
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'FATAL',
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_('Unable to determine the requested page. '.
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'If the problem persists, please contact support.')
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);
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2021-07-28 17:13:10 +02:00
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exit();
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}
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if (!is_array($url_patterns)) {
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logging('FATAL', 'URL : No URL patterns configured !');
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exit();
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}
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logging('DEBUG', "URL : current url = '$current_url'");
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2022-04-24 17:43:44 +02:00
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logging(
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'DEBUG',
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"URL : check current url with the following URL patterns :\n - ".
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implode("\n - ", array_keys($url_patterns))
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);
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2021-07-28 17:13:10 +02:00
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foreach ($url_patterns as $pattern => $handler_infos) {
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$m = url_match($pattern, $current_url, $handler_infos['methods']);
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if (is_array($m)) {
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$request = new UrlRequest($current_url, $handler_infos, $m);
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// Reset last redirect
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if (isset($_SESSION['last_redirect']))
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unset($_SESSION['last_redirect']);
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logging('DEBUG', "URL : result :\n".varDump($request, 1));
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return $request;
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}
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}
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if ($default_url !== false) {
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logging('DEBUG', "Current url match with no pattern. Redirect to default url ('$default_url')");
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redirect($default_url);
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exit();
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}
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// Error 404
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$api_mode = (strpos($current_url, 'api/') === 0);
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2022-04-24 17:43:44 +02:00
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logging(
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'DEBUG',
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"Current URL match with no pattern. Use error 404 handler (API mode=$api_mode).");
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2021-07-28 17:13:10 +02:00
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return new UrlRequest(
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$current_url,
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array(
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'handler' => $_404_url_handler,
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'authenticated' => false,
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'api_mode' => $api_mode,
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)
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);
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}
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/**
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* Check if the current requested URL match with a specific pattern
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2020-04-18 00:51:33 +02:00
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*
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2022-04-24 17:43:44 +02:00
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* @param $pattern string The URL pattern
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* @param $current_url string|false The current URL (optional)
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* @param $methods array|null HTTP method (optional, default: no check)
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2020-04-18 00:51:33 +02:00
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*
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2022-04-24 17:43:44 +02:00
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* @return array|false The URL info if pattern matched, false otherwise.
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2021-07-28 17:13:10 +02:00
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**/
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function url_match($pattern, $current_url=false, $methods=null) {
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if ($methods && !in_array($_SERVER['REQUEST_METHOD'], $methods))
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return false;
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if ($current_url === false) {
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$current_url = get_current_url();
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if (!$current_url) return False;
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}
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if (preg_match($pattern, $current_url, $m)) {
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2022-04-24 17:43:44 +02:00
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logging(
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'DEBUG',
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"URL : Match found with pattern '$pattern' :\n\t".
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str_replace("\n", "\n\t", print_r($m, 1)));
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2021-07-28 17:13:10 +02:00
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return $m;
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}
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return False;
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}
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2022-04-24 17:43:44 +02:00
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/**
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2021-07-28 17:13:10 +02:00
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* Retreive current requested URL and return it
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2020-04-18 00:51:33 +02:00
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*
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2022-04-24 17:43:44 +02:00
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* @return string|false The current request URL or false if fail
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2021-07-28 17:13:10 +02:00
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**/
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function get_current_url() {
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logging('DEBUG', "URL : request URI = '".$_SERVER['REQUEST_URI']."'");
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$base = get_rewrite_base();
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logging('DEBUG', "URL : rewrite base = '$base'");
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if ($_SERVER['REQUEST_URI'] == $base)
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return '';
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if (substr($_SERVER['REQUEST_URI'], 0, strlen($base)) != $base) {
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2022-04-24 17:43:44 +02:00
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logging(
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'ERROR',
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"URL : request URI (".$_SERVER['REQUEST_URI'].") does not start with rewrite base ($base)");
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2021-07-28 17:13:10 +02:00
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return False;
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}
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$current_url = substr($_SERVER['REQUEST_URI'], strlen($base));
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// URL contain params ?
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$params_start = strpos($current_url, '?');
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if ($params_start !== false)
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// Params detected, remove it
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// No url / currrent url start by '?' ?
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if ($params_start == 0)
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return '';
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else
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return substr($current_url, 0, $params_start);
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return $current_url;
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2020-04-18 00:51:33 +02:00
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}
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2021-07-28 17:13:10 +02:00
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/**
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* Try to detect rewrite base from public root URL
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*
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2022-04-24 17:43:44 +02:00
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* @return string The detected rewrite base
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2021-07-28 17:13:10 +02:00
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**/
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2020-04-18 00:51:33 +02:00
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function get_rewrite_base() {
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2021-07-28 17:13:10 +02:00
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global $public_root_url;
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if (preg_match('|^https?://[^/]+/(.*)$|', $public_root_url, $m))
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return '/'.remove_trailing_slash($m[1]).'/';
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elseif (preg_match('|^/(.*)$|', $public_root_url, $m))
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return '/'.remove_trailing_slash($m[1]).'/';
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return '/';
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2020-04-18 00:51:33 +02:00
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}
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2021-07-28 17:13:10 +02:00
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/**
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* Trigger redirect to specified URL (or homepage if omited)
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*
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2022-04-24 17:43:44 +02:00
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* @param $go string|false The destination URL
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2021-07-28 17:13:10 +02:00
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*
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2022-04-24 17:43:44 +02:00
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* @return void
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2021-07-28 17:13:10 +02:00
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**/
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2020-04-18 00:51:33 +02:00
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function redirect($go=false) {
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2021-07-28 17:13:10 +02:00
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global $public_root_url;
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if ($go===false)
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$go = "";
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if (is_absolute_url($go))
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$url = $go;
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elseif (isset($public_root_url) && $public_root_url) {
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// Check $public_root_url end
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if (substr($public_root_url, -1)=='/') {
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$public_root_url=substr($public_root_url, 0, -1);
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}
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$url="$public_root_url/$go";
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}
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else
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$url="/$go";
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// Prevent loop
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if (isset($_SESSION['last_redirect']) && $_SESSION['last_redirect'] == $url)
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2022-04-24 17:43:44 +02:00
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logging(
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'FATAL',
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_('Unable to determine the requested page (loop detected). '.
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'If the problem persists, please contact support.'));
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2021-07-28 17:13:10 +02:00
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else
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$_SESSION['last_redirect'] = $url;
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logging('DEBUG',"redirect($go) => Redirect to : <$url>");
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header("Location: $url");
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exit();
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}
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/**
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* Handle the current requested URL
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*
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2022-04-24 17:43:44 +02:00
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* @param $default_url string|null The default URL if current one does not
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* match with any configured pattern.
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2021-07-28 17:13:10 +02:00
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*
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2022-04-24 17:43:44 +02:00
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* @return void
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2021-07-28 17:13:10 +02:00
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**/
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function handle_request($default_url=null) {
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global $smarty, $api_mode;
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$request = get_request($default_url);
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if (!is_callable($request -> handler)) {
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logging('ERROR', "URL handler function ".$request -> handler."() does not exists !");
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logging('FATAL', _("This request cannot be processed."));
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}
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if ($request -> api_mode)
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$api_mode = true;
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if (isset($smarty) && $smarty)
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$smarty -> assign('request', $request);
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// Check authentication (if need)
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if($request -> authenticated && function_exists('force_authentication'))
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force_authentication();
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try {
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return call_user_func($request -> handler, $request);
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}
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catch (Exception $e) {
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2022-04-24 17:43:44 +02:00
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log_exception(
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$e, "An exception occured running URL handler function ".$request -> handler."()");
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2021-07-28 17:13:10 +02:00
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logging('FATAL', _("This request could not be processed correctly."));
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}
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2020-04-18 00:51:33 +02:00
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}
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2021-07-28 17:13:10 +02:00
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/**
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* Remove trailing slash in specified URL
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*
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2022-04-24 17:43:44 +02:00
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* @param $url string The URL
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2021-07-28 17:13:10 +02:00
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*
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2022-04-24 17:43:44 +02:00
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* @return string The specified URL without trailing slash
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2021-07-28 17:13:10 +02:00
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**/
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2020-04-18 00:51:33 +02:00
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function remove_trailing_slash($url) {
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2021-07-28 17:13:10 +02:00
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if ($url == '/')
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return $url;
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elseif (substr($url, -1) == '/')
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return substr($url, 0, -1);
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return $url;
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2020-04-18 00:51:33 +02:00
|
|
|
}
|
|
|
|
|
2021-07-28 17:13:10 +02:00
|
|
|
/**
|
|
|
|
* Check an AJAX request and trigger a fatal error on fail
|
|
|
|
*
|
|
|
|
* Check if session key is present and valid and set AJAX
|
|
|
|
* mode.
|
|
|
|
*
|
2022-04-24 17:43:44 +02:00
|
|
|
* @param $session_key string The current session key (optional)
|
2021-07-28 17:13:10 +02:00
|
|
|
*
|
2022-04-24 17:43:44 +02:00
|
|
|
* @return void
|
2021-07-28 17:13:10 +02:00
|
|
|
**/
|
2020-04-18 00:51:33 +02:00
|
|
|
function check_ajax_request($session_key=null) {
|
2021-07-28 17:13:10 +02:00
|
|
|
global $ajax, $debug_ajax;
|
|
|
|
$ajax=true;
|
|
|
|
|
|
|
|
if (check_session_key($session_key))
|
|
|
|
fatal_error('Invalid request');
|
|
|
|
|
|
|
|
if ($debug_ajax)
|
|
|
|
logging('DEBUG',"Ajax Request : ".vardump($_REQUEST));
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Get the public absolute URL
|
|
|
|
*
|
2022-04-24 17:43:44 +02:00
|
|
|
* @param $relative_url string|null Relative URL to convert (Default: current URL)
|
2021-07-28 17:13:10 +02:00
|
|
|
*
|
2022-04-24 17:43:44 +02:00
|
|
|
* @return string The public absolute URL
|
2021-07-28 17:13:10 +02:00
|
|
|
**/
|
|
|
|
function get_absolute_url($relative_url=null) {
|
|
|
|
global $public_root_url;
|
|
|
|
if (!is_string($relative_url))
|
|
|
|
$relative_url = get_current_url();
|
|
|
|
if ($public_root_url[0] == '/') {
|
2022-04-24 17:43:44 +02:00
|
|
|
logging(
|
|
|
|
'DEBUG',
|
|
|
|
"URL :: get_absolute_url($relative_url): configured public root URL is relative ".
|
|
|
|
"($public_root_url) => try to detect it from current request infos.");
|
|
|
|
$public_root_url = (
|
|
|
|
'http'.(isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] == 'on'?'s':'').'://'.
|
|
|
|
$_SERVER['HTTP_HOST'].$public_root_url);
|
|
|
|
logging(
|
|
|
|
'DEBUG',
|
|
|
|
"URL :: get_absolute_url($relative_url): detected public_root_url: $public_root_url");
|
2021-07-28 17:13:10 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
if (substr($relative_url, 0, 1) == '/')
|
|
|
|
$relative_url = substr($url, 1);
|
|
|
|
$url = remove_trailing_slash($public_root_url)."/$relative_url";
|
|
|
|
logging('DEBUG', "URL :: get_absolute_url($relative_url): result = $url");
|
|
|
|
return $url;
|
|
|
|
}
|
2020-04-18 00:51:33 +02:00
|
|
|
|
2021-07-28 17:13:10 +02:00
|
|
|
/**
|
|
|
|
* Check if specified URL is absolute
|
|
|
|
*
|
2022-04-24 17:43:44 +02:00
|
|
|
* @param $url string The URL to check
|
2021-07-28 17:13:10 +02:00
|
|
|
*
|
2022-04-24 17:43:44 +02:00
|
|
|
* @return boolean True if specified URL is absolute, False otherwise
|
2021-07-28 17:13:10 +02:00
|
|
|
**/
|
|
|
|
function is_absolute_url($url) {
|
|
|
|
return boolval(preg_match('#^https?://#', $url));
|
|
|
|
}
|
|
|
|
|
2022-04-24 17:43:44 +02:00
|
|
|
/**
|
2021-07-28 17:13:10 +02:00
|
|
|
* Add parameter in specified URL
|
|
|
|
*
|
2022-04-24 17:43:44 +02:00
|
|
|
* @param &$url string The reference of the URL
|
|
|
|
* @param $param string The parameter name
|
|
|
|
* @param $value string The parameter value
|
|
|
|
* @param $encode boolean Set if parameter value must be URL encoded (optional, default: true)
|
2021-07-28 17:13:10 +02:00
|
|
|
*
|
2022-04-24 17:43:44 +02:00
|
|
|
* @return string|null The completed URL
|
2021-07-28 17:13:10 +02:00
|
|
|
*/
|
|
|
|
function add_url_parameter(&$url, $param, $value, $encode=true) {
|
|
|
|
if (strpos($url, '?') === false)
|
|
|
|
$url .= '?';
|
|
|
|
else
|
|
|
|
$url .= '&';
|
|
|
|
$url .= "$param=".($encode?urlencode($value):$value);
|
|
|
|
return $url;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* URL request abstraction
|
|
|
|
*
|
|
|
|
* @author Benjamin Renard <brenard@easter-eggs.com>
|
|
|
|
*/
|
|
|
|
class UrlRequest {
|
2020-04-18 00:51:33 +02:00
|
|
|
|
2021-07-28 17:13:10 +02:00
|
|
|
// The URL requested handler
|
|
|
|
private $current_url = null;
|
|
|
|
|
|
|
|
// The URL requested handler
|
|
|
|
private $handler = null;
|
|
|
|
|
|
|
|
// Request need authentication ?
|
|
|
|
private $authenticated = true;
|
|
|
|
|
|
|
|
// API mode enabled ?
|
|
|
|
private $api_mode = false;
|
|
|
|
|
|
|
|
// Parameters detected on requested URL
|
|
|
|
private $url_params = array();
|
|
|
|
|
|
|
|
public function __construct($current_url, $handler_infos, $url_params=array()) {
|
|
|
|
$this -> current_url = $current_url;
|
|
|
|
$this -> handler = $handler_infos['handler'];
|
2022-04-24 17:43:44 +02:00
|
|
|
$this -> authenticated = (
|
|
|
|
isset($handler_infos['authenticated'])?
|
|
|
|
boolval($handler_infos['authenticated']):true);
|
|
|
|
$this -> api_mode = (
|
|
|
|
isset($handler_infos['api_mode'])?
|
|
|
|
boolval($handler_infos['api_mode']):false);
|
2021-07-28 17:13:10 +02:00
|
|
|
$this -> url_params = $url_params;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Get request info
|
|
|
|
*
|
2022-04-24 17:43:44 +02:00
|
|
|
* @param $key string The name of the info
|
2021-07-28 17:13:10 +02:00
|
|
|
*
|
2022-04-24 17:43:44 +02:00
|
|
|
* @return mixed The value
|
2021-07-28 17:13:10 +02:00
|
|
|
**/
|
|
|
|
public function __get($key) {
|
|
|
|
if ($key == 'current_url')
|
|
|
|
return $this -> current_url;
|
|
|
|
if ($key == 'handler')
|
|
|
|
return $this -> handler;
|
|
|
|
if ($key == 'authenticated')
|
|
|
|
return $this -> authenticated;
|
|
|
|
if ($key == 'api_mode')
|
|
|
|
return $this -> api_mode;
|
|
|
|
if ($key == 'referer')
|
|
|
|
return $this -> get_referer();
|
|
|
|
if ($key == 'http_method')
|
|
|
|
return $_SERVER['REQUEST_METHOD'];
|
|
|
|
if (array_key_exists($key, $this->url_params)) {
|
|
|
|
return urldecode($this->url_params[$key]);
|
|
|
|
}
|
|
|
|
// Unknown key, log warning
|
|
|
|
logging('WARNING', "__get($key): invalid property requested\n".get_debug_backtrace_context());
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Check is request info is set
|
|
|
|
*
|
2022-04-24 17:43:44 +02:00
|
|
|
* @param $key string The name of the info
|
2021-07-28 17:13:10 +02:00
|
|
|
*
|
2022-04-24 17:43:44 +02:00
|
|
|
* @return boolval True is info is set, False otherwise
|
2021-07-28 17:13:10 +02:00
|
|
|
**/
|
|
|
|
public function __isset($key) {
|
|
|
|
if (in_array($key, array('current_url', 'handler', 'authenticated')))
|
|
|
|
return True;
|
|
|
|
return array_key_exists($key, $this->url_params);
|
|
|
|
}
|
|
|
|
|
2021-07-28 18:18:36 +02:00
|
|
|
/**
|
|
|
|
* Get request parameter
|
|
|
|
*
|
2022-04-24 17:43:44 +02:00
|
|
|
* @param $parameter string The name of the parameter
|
|
|
|
* @param $decode string If true, the parameter value will be urldecoded
|
|
|
|
* (optional, default: true)
|
2021-07-28 18:18:36 +02:00
|
|
|
*
|
2022-04-24 17:43:44 +02:00
|
|
|
* @return mixed The value or false if parameter does not exists
|
2021-07-28 18:18:36 +02:00
|
|
|
**/
|
|
|
|
public function get_param($parameter, $decode=true) {
|
|
|
|
if (array_key_exists($parameter, $this->url_params)) {
|
|
|
|
if ($decode)
|
|
|
|
return urldecode($this->url_params[$parameter]);
|
|
|
|
return $this->url_params[$parameter];
|
|
|
|
}
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
2022-04-24 17:43:44 +02:00
|
|
|
/**
|
2021-07-28 17:13:10 +02:00
|
|
|
* Get request referer (if known)
|
|
|
|
*
|
2022-04-24 17:43:44 +02:00
|
|
|
* @return string|null The request referer URL if known, null otherwise
|
2021-07-28 17:13:10 +02:00
|
|
|
*/
|
|
|
|
public function get_referer() {
|
|
|
|
if (isset($_SERVER['HTTP_REFERER']) && $_SERVER['HTTP_REFERER'])
|
|
|
|
return $_SERVER['HTTP_REFERER'];
|
|
|
|
return null;
|
|
|
|
}
|
2020-04-18 00:51:33 +02:00
|
|
|
|
|
|
|
}
|