Commit 65be26a1 authored by Jakob Moser's avatar Jakob Moser
Browse files

Fix bugs, re-structure code, hope everything works now

parent a8020af1

functions.php

+39 −29
Original line number Diff line number Diff line
@@ -75,54 +75,41 @@ function fscoli_regex_match_group($regex, $str, $group) { 
    }

}



/*

 * Add privacy protection for embed elements: You have to click a button of a consent prompt

 * before the content is loaded.

/**

 * Helper function: Builds a consent prompt (HTML and JS) using the given parameters, that already have to be extracted

 * from somewhere.

 */

function fscoli_show_embed_privacy_consent_prompt($embed_html) {

    // Try to guess width and height of the consent prompt to match the dimensions of the embedded content

    $width              = fscoli_regex_match_group('/width ?(:|= ?["\']) ?(\d+ ?px)/', $embed_html, 2);

    $height             = fscoli_regex_match_group('/height ?(:|= ?["\']) ?(\d+ ?px)/', $embed_html, 2);



    if($width === null) {

        $width = "auto";

    }

    if($height === null) {

        $height = "auto";

    }



    $provider_url       = fscoli_regex_match_group('/src ?= ?["\'](https?://(.*?))/.*?["\']/', $embed_html, 1);

    $provider_domain    = fscoli_regex_match_group('/src ?= ?["\'](https?://(.*?))/.*?["\']/', $embed_html, 2);



    $privacy_policy_url = null;

    if($provider_domain === "umap.openstreetmap.de") {

        $privacy_policy_url = "https://www.fossgis.de/datenschutzerkl%C3%A4rung";

    }

function fscoli_get_consent_prompt($embed_html, $width_attr, $height_attr, $provider_url, $provider_domain, $privacy_policy_url) {

    $embed_html = esc_html($embed_html);

    $width_attr = esc_attr($width_attr);

    $height_attr = esc_attr($height_attr);

    $provider_url = esc_url($provider_url);

    $provider_domain = esc_html($provider_domain);

    $privacy_policy_url = esc_url($privacy_policy_url);



    if($privacy_policy_url !== null) {

        $privacy_policy_link = <<<HTML

        <a href="${esc_url(privacy_policy_url)}">dort verlinkte Datenschutzerklärung</a>

        <a href="$privacy_policy_url">dort verlinkte Datenschutzerklärung</a>

        HTML;

    } else {

        $privacy_policy_link = "dort verlinkte Datenschutzerklärung";

    }





    /* 

     * We use the heredoc syntax (https://www.php.net/manual/en/language.types.string.php#language.types.string.syntax.heredoc)

     * to embed a multiline string in this document. Heredocs can be delimited by any string - we chose HTML, but EOT and END

     * are more commonly used options. Funny enough, when we use HTML to delimit the heredoc, at least Visual Studio Code

     * applies HTML syntax highlighting to the string...

     */ 

    $privacy_consent_prompt = <<<HTML

    <div class="privacy-consent-prompt-area" style="width: ${esc_attr(width)}; height: ${esc_attr(height)};">

    return <<<HTML

    <div class="privacy-consent-prompt-area" style="width: $width_attr; height: $height_attr;">

        <div class="unloaded-content">

            ${esc_html($embed_html)}

            $embed_html

        </div>



        <section class="privacy-consent-prompt">

            <button onclick="givePrivacyConsent(this.parentElement.parentElement)">Inhalt anzeigen</button>

            <p>Dabei werden Daten an <a href="${esc_url(provider_url)}">${esc_html(provider_domain)}</a> (und ggfs. weitere Anbieter) übertragen. Es gilt die $privacy_policy_link.</p>

            <p>Dabei werden Daten an <a href="$provider_url">$provider_domain</a> (und ggfs. weitere Anbieter) übertragen. Es gilt die $privacy_policy_link.</p>

        </section>

    </div>
@@ -132,8 +119,31 @@ function fscoli_show_embed_privacy_consent_prompt($embed_html) { 
        }

    </script>

    HTML;

}



/*

 * Add privacy protection for embed elements: You have to click a button of a consent prompt

 * before the content is loaded.

 */

function fscoli_show_embed_privacy_consent_prompt($embed_html) {

    // Try to guess width and height of the consent prompt to match the dimensions of the embedded content

    // We try to extract them from CSS properties (e.g. width: 150px) or HTML attributes (width="150px").

    $width              = fscoli_regex_match_group('/width ?(:|= ?["\']) ?(\d+ ?px)/', $embed_html, 2);

    $height             = fscoli_regex_match_group('/height ?(:|= ?["\']) ?(\d+ ?px)/', $embed_html, 2);

    if($width === null) { $width = "auto"; }

    if($height === null) { $height = "auto"; }



    // Try to guess the URL of the content provider, its domain and, using a hardcoded list of policies,

    // its privacy policy.

    $provider_url       = fscoli_regex_match_group('/src ?= ?["\'](https?://(.*?))/.*?["\']/', $embed_html, 1);

    $provider_domain    = fscoli_regex_match_group('/src ?= ?["\'](https?://(.*?))/.*?["\']/', $embed_html, 2);



    $privacy_policy_url = null;

    if($provider_domain === "umap.openstreetmap.de") {

        $privacy_policy_url = "https://www.fossgis.de/datenschutzerkl%C3%A4rung";

    }



    return $privacy_consent_prompt;   

    return fscoli_get_consent_prompt($embed_html, $width, $height, $provider_url, $provider_domain, $privacy_policy_url);   

}



add_filter('embed_handler_html', 'fscoli_show_embed_privacy_consent_prompt');