Implemented WebFinger and replaced our XRD with PEAR XML_XRD

[quix0rs-gnu-social.git] / plugins / LRDD / extlib / XML / XRD / Loader / JSON.php

diff --git a/plugins/LRDD/extlib/XML/XRD/Loader/JSON.php b/plugins/LRDD/extlib/XML/XRD/Loader/JSON.php
new file mode 100644 (file)
index 0000000..48ed8ca
--- /dev/null
+++ b/plugins/LRDD/extlib/XML/XRD/Loader/JSON.php
@@ -0,0 +1,187 @@
+<?php
+/**
+ * Part of XML_XRD
+ *
+ * PHP version 5
+ *
+ * @category XML
+ * @package  XML_XRD
+ * @author   Christian Weiske <cweiske@php.net>
+ * @license  http://www.gnu.org/copyleft/lesser.html LGPL
+ * @link     http://pear.php.net/package/XML_XRD
+ */
+
+/**
+ * Loads XRD data from a JSON file
+ *
+ * @category XML
+ * @package  XML_XRD
+ * @author   Christian Weiske <cweiske@php.net>
+ * @license  http://www.gnu.org/copyleft/lesser.html LGPL
+ * @version  Release: @package_version@
+ * @link     http://pear.php.net/package/XML_XRD
+ */
+class XML_XRD_Loader_JSON
+{
+    /**
+     * Data storage the XML data get loaded into
+     *
+     * @var XML_XRD
+     */
+    protected $xrd;
+
+
+
+    /**
+     * Init object with xrd object
+     *
+     * @param XML_XRD $xrd Data storage the JSON data get loaded into
+     */
+    public function __construct(XML_XRD $xrd)
+    {
+        $this->xrd = $xrd;
+    }
+
+    /**
+     * Loads the contents of the given file
+     *
+     * @param string $file Path to an JRD file
+     *
+     * @return void
+     *
+     * @throws XML_XRD_Loader_Exception When the JSON is invalid or cannot be
+     *                                   loaded
+     */
+    public function loadFile($file)
+    {
+        $json = file_get_contents($file);
+        if ($json === false) {
+            throw new XML_XRD_Loader_Exception(
+                'Error loading JRD file: ' . $file,
+                XML_XRD_Loader_Exception::LOAD
+            );
+        }
+        return $this->loadString($json);
+    }
+
+    /**
+     * Loads the contents of the given string
+     *
+     * @param string $json JSON string
+     *
+     * @return void
+     *
+     * @throws XML_XRD_Loader_Exception When the JSON is invalid or cannot be
+     *                                   loaded
+     */
+    public function loadString($json)
+    {
+        if ($json == '') {
+            throw new XML_XRD_Loader_Exception(
+                'Error loading JRD: string empty',
+                XML_XRD_Loader_Exception::LOAD
+            );
+        }
+
+        $obj = json_decode($json);
+        if ($obj !== null) {
+            return $this->load($obj);
+        }
+
+        $constants = get_defined_constants(true);
+        $json_errors = array();
+        foreach ($constants['json'] as $name => $value) {
+            if (!strncmp($name, 'JSON_ERROR_', 11)) {
+                $json_errors[$value] = $name;
+            }
+        }
+        throw new XML_XRD_Loader_Exception(
+            'Error loading JRD: ' . $json_errors[json_last_error()],
+            XML_XRD_Loader_Exception::LOAD
+        );
+    }
+
+    /**
+     * Loads the JSON object into the classes' data structures
+     *
+     * @param object $j JSON object containing the whole JSON document
+     *
+     * @return void
+     */
+    public function load(stdClass $j)
+    {
+        if (isset($j->subject)) {
+            $this->xrd->subject = (string)$j->subject;
+        }
+        if (isset($j->aliases)) {
+            foreach ($j->aliases as $jAlias) {
+                $this->xrd->aliases[] = (string)$jAlias;
+            }
+        }
+
+        if (isset($j->links)) {
+            foreach ($j->links as $jLink) {
+                $this->xrd->links[] = $this->loadLink($jLink);
+            }
+        }
+
+        $this->loadProperties($this->xrd, $j);
+
+        if (isset($j->expires)) {
+            $this->xrd->expires = strtotime($j->expires);
+        }
+    }
+
+    /**
+     * Loads the Property elements from XML
+     *
+     * @param object $store Data store where the properties get stored
+     * @param object $j     JSON element with "properties" variable
+     *
+     * @return boolean True when all went well
+     */
+    protected function loadProperties(
+        XML_XRD_PropertyAccess $store, stdClass $j
+    ) {
+        if (!isset($j->properties)) {
+            return true;
+        }
+
+        foreach ($j->properties as $type => $jProp) {
+            $store->properties[] = new XML_XRD_Element_Property(
+                $type, (string)$jProp
+            );
+        }
+        
+        return true;
+    }
+
+    /**
+     * Create a link element object from XML element
+     *
+     * @param object $j JSON link object
+     *
+     * @return XML_XRD_Element_Link Created link object
+     */
+    protected function loadLink(stdClass $j)
+    {
+        $link = new XML_XRD_Element_Link();
+        foreach (array('rel', 'type', 'href', 'template') as $var) {
+            if (isset($j->$var)) {
+                $link->$var = (string)$j->$var;
+            }
+        }
+
+        if (isset($j->titles)) {
+            foreach ($j->titles as $lang => $jTitle) {
+                if (!isset($link->titles[$lang])) {
+                    $link->titles[$lang] = (string)$jTitle;
+                }
+            }
+        }
+        $this->loadProperties($link, $j);
+
+        return $link;
+    }
+}
+?>