commit 5d7f96e1b60bd05bdad8b77f92eed998d1e4279c
Author: info@mschuette.name <info@mschuette.name>
Date:   Wed Apr 2 18:34:16 2014 +0000

    initial commit

diff --git a/README.md b/README.md
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+# Freifunk Metadata Wordpress Plugin
+
+A small Wordpress plugin to render Freifunk metadata.
+
+It reads (and caches) JSON input from a configured URL and provides shortcodes to output the data.
+
+Currently implemented are `[ff_services]` and `[ff_contact]`.
+
+
diff --git a/freifunkmeta.php b/freifunkmeta.php
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+++ b/freifunkmeta.php
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+<?php
+/*
+Plugin Name: Freifunk Metadata Shortcodes
+Plugin URI: http://mschuette.name/
+Description: Defines shortcodes to display Freifunk metadata
+Version: 0.1
+Author: Martin Schuette
+Author URI: http://mschuette.name/
+*/
+
+/* gets metadata from URL, handles caching */
+function ff_meta_getmetadata ($url) {
+    $url_hash = hash('crc32', $url);
+    
+    // Caching
+    if ( false === ( $metajson = get_transient( "ff_metadata_${url_hash}" ) ) ) {
+        $metajson = wp_remote_retrieve_body( wp_remote_get($url) );
+        set_transient( "ff_metadata_${url_hash}", $metajson, 1 * HOUR_IN_SECONDS );
+    }
+    $metadata = json_decode ( $metajson, $assoc = true );
+    return $metadata;
+}
+
+if ( ! shortcode_exists( 'ff_services' ) ) {
+    add_shortcode( 'ff_services', 'ff_meta_shortcode_services');
+}
+// Example:
+// [ff_services]
+// [ff_services url="http://meta.hamburg.freifunk.net/ffhh.json"]
+function ff_meta_shortcode_services( $atts ) {
+    $default_url = get_option( 'ff_meta_url' );
+    extract(shortcode_atts( array(
+        'url' => $default_url,
+    ), $atts));
+
+    $metadata = ff_meta_getmetadata ($url);
+    $services = $metadata['services'];
+
+    // Output
+    $outstr = '<div class="ff ff_services"><ul>';
+    foreach ($services as $service) {
+        $outstr .= sprintf('<li>%s (%s): <a href="%s">%s</a></li>',
+                         $service['serviceName'], $service['serviceDescription'],
+                         $service['internalUri'], $service['internalUri']);
+    }
+    $outstr .= '</ul></div>';
+    return $outstr;
+}
+
+if ( ! shortcode_exists( 'ff_contact' ) ) {
+    add_shortcode( 'ff_contact', 'ff_meta_shortcode_contact');
+}
+// Example:
+// [ff_contact]
+// [ff_contact url="http://meta.hamburg.freifunk.net/ffhh.json"]
+function ff_meta_shortcode_contact( $atts ) {
+    $default_url = get_option( 'ff_meta_url' );
+    extract(shortcode_atts( array(
+        'url' => $default_url,
+    ), $atts));
+
+    $metadata = ff_meta_getmetadata ($url);
+    $contact = $metadata['contact'];
+
+    // Output -- rather ugly but the data is not uniform, some fields are URIs, some are usernames, ...
+    $outstr = '<div class="ff ff_contact"><p>';
+    if (!empty($contact['email'])) {
+      $outstr .= sprintf("E-Mail: <a href=\"mailto:%s\">%s</a><br />\n", $contact['email'], $contact['email']);
+    }
+    if (!empty($contact['ml'])) {
+      $outstr .= sprintf("Mailingliste: <a href=\"mailto:%s\">%s</a><br />\n", $contact['ml'], $contact['ml']);
+    }
+    if (!empty($contact['irc'])) {
+      $outstr .= sprintf("IRC: <a href=\"%s\">%s</a><br />\n", $contact['irc'], $contact['irc']);
+    }
+    if (!empty($contact['twitter'])) {
+      // catch username instead of URI
+      if ($contact['twitter'][0] === "@") {
+        $twitter_url = 'http://twitter.com/'.ltrim($contact['twitter'], "@");
+        $twitter_handle = $contact['twitter'];
+      } else {
+        $twitter_url = $contact['twitter'];
+        $twitter_handle = '@' . substr($contact['twitter'], strrpos($contact['twitter'], '/') + 1);
+      }
+      $outstr .= sprintf("Twitter: <a href=\"%s\">%s</a><br />\n", $twitter_url, $twitter_handle);
+    }
+    if (!empty($contact['facebook'])) {
+      $outstr .= sprintf("Facebook: <a href=\"%s\">%s</a><br />\n", $contact['facebook'], $contact['facebook']);
+    }
+    if (!empty($contact['googleplus'])) {
+      $outstr .= sprintf("G+: <a href=\"%s\">%s</a><br />\n", $contact['googleplus'], $contact['googleplus']);
+    }
+    if (!empty($contact['jabber'])) {
+      $outstr .= sprintf("XMPP: <a href=\"xmpp:%s\">%s</a><br />\n", $contact['jabber'], $contact['jabber']);
+    }
+    # maybe we do not want public phone numbers...
+    #if (!empty($contact['phone'])) {
+    #  $outstr .= sprintf("Telephon: %s<br />\n", $contact['phone']);
+    #}
+    $outstr .= '</p></div>';
+    return $outstr;
+}
+
+// Options Page:
+add_action( 'admin_menu', 'ff_meta_admin_menu' );
+function ff_meta_admin_menu() {
+    add_options_page(
+        'FF Meta Plugin',      // page title
+        'FF Meta',             // menu title
+        'manage_options',      // req'd capability
+        'ff_meta_plugin',      // menu slug
+        'ff_meta_options_page' // callback function
+    );
+}
+
+add_action( 'admin_init', 'ff_meta_admin_init' );
+function ff_meta_admin_init() {
+    register_setting(
+        'ff_meta_settings-group', // group name
+        'ff_meta_url'             // option name
+    );
+    add_settings_section(
+        'ff_meta_section-one',          // ID
+        'Section One',                  // Title
+        'ff_meta_section_one_callback', // callback to fill
+        'ff_meta_plugin'                // page to display on
+    );
+    add_settings_field(
+        'ff_meta_url',           // ID
+        'URL of meta.json',      // Title
+        'ff_meta_url_callback',  // callback to fill field
+        'ff_meta_plugin',        // menu page=slug to display field on
+        'ff_meta_section-one'    // section to display the field in
+    );
+}
+
+function ff_meta_section_one_callback() {
+    echo 'This Plugin provides shortcodes to display information from the Freifunk meta.json.';
+}
+
+function ff_meta_url_callback() {
+    $url = get_option( 'ff_meta_url' );
+    echo "<input type='text' name='ff_meta_url' value='$url' />";
+}
+
+function ff_meta_options_page() {
+    ?>
+    <div class="wrap">
+        <h2>Freifunk Meta Plugin Options</h2>
+        <form action="options.php" method="POST">
+            <?php settings_fields( 'ff_meta_settings-group' ); ?>
+            <?php do_settings_sections( 'ff_meta_plugin' ); ?>
+            <?php submit_button(); ?>
+        </form>
+    </div>
+    <?php
+}
+