2019-08-27 00:32:24 +02:00
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<?PHP
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/**
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* Generic collection of functions used in CSVXML.
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2019-11-11 12:08:18 +01:00
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*
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* @file
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*
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* @author
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2019-08-27 00:32:24 +02:00
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*/
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declare(strict_types = 1);
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/**
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* Function lang_getfrombrowser gets the browser language based on HTTP headers.
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*
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* @param array $allowed_languages Array containing all the languages for which
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* there are translations.
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* @param string $default_language Default language of the instance of MD.
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* @param string $lang_variable Currently set language variable. Optional.
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* @param boolean $strict_mode Whether to demand "de-de" (true) or "de" (false) Optional.
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*
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* @return string
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*/
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function lang_getfrombrowser(array $allowed_languages, string $default_language, string $lang_variable = "", bool $strict_mode = true):string {
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// $_SERVER['HTTP_ACCEPT_LANGUAGE'] verwenden, wenn keine Sprachvariable mitgegeben wurde
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if ($lang_variable === "") {
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if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) $lang_variable = $_SERVER['HTTP_ACCEPT_LANGUAGE'];
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}
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// wurde irgendwelche Information mitgeschickt?
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if (empty($lang_variable)) {
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// Nein? => Standardsprache zurückgeben
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return $default_language;
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}
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// Den Header auftrennen
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$accepted_languages = preg_split('/,\s*/', $lang_variable);
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// Die Standardwerte einstellen
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$current_lang = $default_language;
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$current_q = 0;
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// Nun alle mitgegebenen Sprachen abarbeiten
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foreach ($accepted_languages as $accepted_language) {
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// Alle Infos über diese Sprache rausholen
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// phpcs:disable Generic.Strings.UnnecessaryStringConcat
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2020-07-03 16:41:31 +02:00
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$res = preg_match('/^([a-z]{1,8}(?:-[a-z]{1,8})*)(?:;\s*q=(0(?:\.[0-9]{1,3})?|1(?:\.0{1,3})?))?$/i', $accepted_language, $matches);
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2019-08-27 00:32:24 +02:00
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// phpcs:enable
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// war die Syntax gültig?
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if (!$res) {
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// Nein? Dann ignorieren
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continue;
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}
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// Sprachcode holen und dann sofort in die Einzelteile trennen
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$lang_code = explode('-', $matches[1]);
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// Wurde eine Qualität mitgegeben?
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if (isset($matches[2])) {
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// die Qualität benutzen
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$lang_quality = (float)$matches[2];
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} else {
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// Kompabilitätsmodus: Qualität 1 annehmen
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$lang_quality = 1.0;
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}
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// Bis der Sprachcode leer ist...
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2020-07-03 16:41:31 +02:00
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while (!empty($lang_code)) {
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2019-08-27 00:32:24 +02:00
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// mal sehen, ob der Sprachcode angeboten wird
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if (in_array(strtolower(join('-', $lang_code)), $allowed_languages)) {
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// Qualität anschauen
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if ($lang_quality > $current_q) {
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// diese Sprache verwenden
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$current_lang = strtolower(join('-', $lang_code));
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$current_q = $lang_quality;
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// Hier die innere while-Schleife verlassen
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break;
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}
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}
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// Wenn wir im strengen Modus sind, die Sprache nicht versuchen zu minimalisieren
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if ($strict_mode) {
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// innere While-Schleife aufbrechen
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break;
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}
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// den rechtesten Teil des Sprachcodes abschneiden
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array_pop($lang_code);
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}
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}
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// die gefundene Sprache zurückgeben
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return $current_lang;
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}
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/**
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* Function for generating the HTML head.
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*
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* @param string $injected Additional code to inject into the head, e.g. a
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* reference to JS files.
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*
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* @return string
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*/
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function printHTMLHead(string $injected = "") {
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$output = '<!DOCTYPE HTML>
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<html lang="en">
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<head>
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<meta name="viewport" content="width=device-width, initial-scale=1" />
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<meta http-equiv="content-type" content="text/html; charset=UTF-8"/>
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<meta name="theme-color" content="#FFF" />
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2020-07-03 17:13:37 +02:00
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<link rel="stylesheet" type="text/css" href="assets/css/csvxml.min.css" />
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2019-12-24 06:46:22 +01:00
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<link rel="shortcut icon" sizes="128x128" href="assets/img/mdlogo-csvxml.svg" />
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2020-07-03 17:13:37 +02:00
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<script src="assets/js/csvxml-overview.min.js" type="text/javascript" defer></script>
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2019-08-27 00:32:24 +02:00
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<title>CSVXML :: museum-digital</title>
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<meta name="keywords" content="Imports, museum-digital" />
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';
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$output .= $injected;
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$output .= '
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</head>
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<body>
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<h1>
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2019-12-24 06:46:22 +01:00
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<img src="assets/img/mdlogo-csvxml.svg" />
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2019-08-27 00:32:24 +02:00
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<span>museum-digital:csvxml</span>
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</h1>
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';
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return $output;
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}
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/**
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* Function generateHelpTooltip returns a tooltip for hovering over using the common settings.
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*
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* @param string $identifier ID attribute of the tooltip.
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* @param string $title Title of the tooltip.
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* @param string $explica More in-depth explanation: body of the tooltip.
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* @param boolean $setParagraph If set to true (default), the content of the tooltip will be put into a <p> element. Optional.
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*
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* @return array
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*/
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function generateHelpTooltip(string $identifier, string $title, string $explica, bool $setParagraph = true):array {
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$outputTag = '<a class="newToolTipTag icons iconsHelp" data-for="' . $identifier . '" title="Help"></a>';
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$output = '<span class="newToolTip" id="tooltip_' . $identifier . '" data-title="' . $title . '">';
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if ($setParagraph) $output .= '<p class="toolTipCont">';
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$output .= $explica;
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if ($setParagraph) $output .= '</p>';
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$output .= '</span>';
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return [$output, $outputTag];
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}
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2019-09-01 19:54:01 +02:00
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/**
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* Outputs a DOMDocument with correct header and then aborts.
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* Used mainly for debugging.
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*
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* @param DOMDocument $xmlDoc XML object.
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*
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2019-11-11 12:08:18 +01:00
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* @return string
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2019-09-01 19:54:01 +02:00
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*/
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2019-11-11 12:08:18 +01:00
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function printDOMDocToXML(DOMDocument $xmlDoc):string {
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2019-09-01 19:54:01 +02:00
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return '<?xml version="1.0" encoding="UTF-8"?>' . $xmlDoc->saveXML($xmlDoc->documentElement);
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2019-09-30 21:18:04 +02:00
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2019-09-01 19:54:01 +02:00
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}
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/**
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* Function for creating a DOMElement with a text node inside.
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*
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* @param DOMDocument $xmlDoc XML document.
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* @param string $tag Tag.
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* @param string $content Text content.
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*
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* @return DOMElement
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*/
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function createTextDomElement(DOMDocument $xmlDoc, string $tag, string $content):DOMElement {
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2019-09-30 21:18:04 +02:00
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try {
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$element = $xmlDoc->createElement($tag);
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}
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catch (DOMException $e) {
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2019-11-13 22:25:42 +01:00
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echo "Error at " . __FILE__ . ", line #" . __LINE__ . PHP_EOL . "<br/>";
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echo "Cannot create DOM element for $tag / $content";
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2019-11-11 12:08:18 +01:00
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exit;
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2019-09-30 21:18:04 +02:00
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}
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2019-09-01 19:54:01 +02:00
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$element->appendChild($xmlDoc->createTextNode($content));
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return $element;
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}
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/**
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* Function for creating a DOMDocument record channel.
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*
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* @return array
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*/
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function getBlankRecordChannel():array {
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$xmlDoc = new DOMDocument("1.0", "UTF-8");
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$xmlMainElem = $xmlDoc->createElement("record");
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$record_node = $xmlDoc->appendChild($xmlMainElem); //add RSS element to XML node
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return [$xmlDoc, $record_node];
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}
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2019-11-11 12:08:18 +01:00
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/**
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* Function for removing a directory with all its contents.
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*
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* @param string $dir File path of the directory to remove.
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*
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* @return void
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*/
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function rrmdir(string $dir) {
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2019-09-01 19:54:01 +02:00
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if (is_dir($dir)) {
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$objects = scandir($dir);
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foreach ($objects as $object) {
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if ($object != "." && $object != "..") {
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if (filetype($dir . "/" . $object) == "dir") rrmdir($dir . "/" . $object); else unlink($dir . "/" . $object);
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}
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}
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reset($objects);
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rmdir($dir);
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}
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}
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2019-11-11 12:08:18 +01:00
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/**
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* Function for checking if two arrays have identical values / contents.
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*
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* @param array $arrayA First array to compare.
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* @param array $arrayB Second array to compare.
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*
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* @return boolean
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*/
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function identical_values(array $arrayA, array $arrayB):bool {
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sort($arrayA);
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sort($arrayB);
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return $arrayA == $arrayB;
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}
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2020-07-03 16:41:31 +02:00
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/**
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* Function for retrieving the anti-csrf token or generating it if need be.
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*
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* @return string
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*/
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function getAntiCsrfToken():string {
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if (empty($_SESSION['anti-csrf-token'])) {
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$_SESSION['anti-csrf-token'] = bin2hex(random_bytes(32));
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}
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return $_SESSION['anti-csrf-token'];
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}
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/**
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* Function for validating anti-csrf tokens. Each anti-csrf token is removed
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* after use.
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*
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* @return boolean
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*/
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function validateAntiCsrfToken():bool {
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$validity = false;
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if (!empty($_POST['anti-csrf-token'])
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&& !empty($_SESSION['anti-csrf-token'])
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&& hash_equals($_SESSION['anti-csrf-token'], $_POST['anti-csrf-token']) === true
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) {
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$validity = true;
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}
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$_SESSION['anti-csrf-token'] = null; unset($_SESSION['anti-csrf-token']);
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return $validity;
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}
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