]> git.mxchange.org Git - friendica.git/blobdiff - include/dfrn.php
"profile". "like" and "comment" could work, status messages only partly.
[friendica.git] / include / dfrn.php
index 4c1f21dd06206b3e6e1a8989c75107bef5a97cf3..ad04a91295da29f4932024a9efee0c3f4bf4b549 100644 (file)
@@ -6,9 +6,19 @@
  * https://github.com/friendica/friendica/wiki/Protocol
  */
 
-require_once('include/items.php');
-require_once('include/Contact.php');
-require_once('include/ostatus.php');
+require_once("include/Contact.php");
+require_once("include/ostatus.php");
+require_once("include/enotify.php");
+require_once("include/threads.php");
+require_once("include/socgraph.php");
+require_once("include/items.php");
+require_once("include/tags.php");
+require_once("include/files.php");
+require_once("include/event.php");
+require_once("include/text.php");
+require_once("include/oembed.php");
+require_once("include/html2bbcode.php");
+require_once("include/bbcode.php");
 
 /**
  * @brief This class contain functions to create and send DFRN XML files
@@ -16,6 +26,10 @@ require_once('include/ostatus.php');
  */
 class dfrn {
 
+       const DFRN_TOP_LEVEL = 0;       // Top level posting
+       const DFRN_REPLY = 1;           // Regular reply that is stored locally
+       const DFRN_REPLY_RC = 2;        // Reply that will be relayed
+
        /**
         * @brief Generates the atom entries for delivery.php
         *
@@ -26,7 +40,7 @@ class dfrn {
         *
         * @return string DFRN entries
         */
-       function entries($items,$owner) {
+       public static function entries($items,$owner) {
 
                $doc = new DOMDocument('1.0', 'utf-8');
                $doc->formatOutput = true;
@@ -56,7 +70,7 @@ class dfrn {
         *
         * @return string DFRN feed entries
         */
-       function feed($dfrn_id, $owner_nick, $last_update, $direction = 0) {
+       public static function feed($dfrn_id, $owner_nick, $last_update, $direction = 0) {
 
                $a = get_app();
 
@@ -82,7 +96,7 @@ class dfrn {
 
                $sql_extra = " AND `item`.`allow_cid` = '' AND `item`.`allow_gid` = '' AND `item`.`deny_cid`  = '' AND `item`.`deny_gid`  = '' ";
 
-               $r = q("SELECT `contact`.*, `user`.`uid` AS `user_uid`, `user`.`nickname`, `user`.`timezone`, `user`.`page-flags`
+               $r = q("SELECT `contact`.*, `user`.`nickname`, `user`.`timezone`, `user`.`page-flags`
                        FROM `contact` INNER JOIN `user` ON `user`.`uid` = `contact`.`uid`
                        WHERE `contact`.`self` = 1 AND `user`.`nickname` = '%s' LIMIT 1",
                        dbesc($owner_nick)
@@ -92,7 +106,7 @@ class dfrn {
                        killme();
 
                $owner = $r[0];
-               $owner_id = $owner['user_uid'];
+               $owner_id = $owner['uid'];
                $owner_nick = $owner['nickname'];
 
                $sql_post_table = "";
@@ -263,7 +277,7 @@ class dfrn {
         *
         * @return string DFRN mail
         */
-       function mail($item, $owner) {
+       public static function mail($item, $owner) {
                $doc = new DOMDocument('1.0', 'utf-8');
                $doc->formatOutput = true;
 
@@ -297,7 +311,7 @@ class dfrn {
         *
         * @return string DFRN suggestions
         */
-       function fsuggest($item, $owner) {
+       public static function fsuggest($item, $owner) {
                $doc = new DOMDocument('1.0', 'utf-8');
                $doc->formatOutput = true;
 
@@ -324,7 +338,7 @@ class dfrn {
         *
         * @return string DFRN relocations
         */
-       function relocate($owner, $uid) {
+       public static function relocate($owner, $uid) {
 
                /* get site pubkey. this could be a new installation with no site keys*/
                $pubkey = get_config('system','site_pubkey');
@@ -470,7 +484,7 @@ class dfrn {
                                        "media:width" => 175, "media:height" => 175, "href" => $owner['photo']);
                xml_add_element($doc, $author, "link", "", $attributes);
 
-               $birthday = feed_birthday($owner['user_uid'], $owner['timezone']);
+               $birthday = feed_birthday($owner['uid'], $owner['timezone']);
 
                if ($birthday)
                        xml_add_element($doc, $author, "dfrn:birthday", $birthday);
@@ -485,7 +499,7 @@ class dfrn {
                        FROM `profile`
                                INNER JOIN `user` ON `user`.`uid` = `profile`.`uid`
                                WHERE `profile`.`is-default` AND NOT `user`.`hidewall` AND `user`.`uid` = %d",
-                       intval($owner['user_uid']));
+                       intval($owner['uid']));
                if ($r) {
                        $profile = $r[0];
                        xml_add_element($doc, $author, "poco:displayName", $profile["name"]);
@@ -620,13 +634,20 @@ class dfrn {
 
                                        $r->link = preg_replace('/\<link(.*?)\"\>/','<link$1"/>',$r->link);
 
-                                       $data = parse_xml_string($r->link, false);
-                                       foreach ($data->attributes() AS $parameter => $value)
-                                               $attributes[$parameter] = $value;
-                               } else
+                                       // XML does need a single element as root element so we add a dummy element here
+                                       $data = parse_xml_string("<dummy>".$r->link."</dummy>", false);
+                                       if (is_object($data)) {
+                                               foreach ($data->link AS $link) {
+                                                       $attributes = array();
+                                                       foreach ($link->attributes() AS $parameter => $value)
+                                                               $attributes[$parameter] = $value;
+                                                       xml_add_element($doc, $entry, "link", "", $attributes);
+                                               }
+                                       }
+                               } else {
                                        $attributes = array("rel" => "alternate", "type" => "text/html", "href" => $r->link);
-
-                               xml_add_element($doc, $entry, "link", "", $attributes);
+                                       xml_add_element($doc, $entry, "link", "", $attributes);
+                               }
                        }
                        if($r->content)
                                xml_add_element($doc, $entry, "content", bbcode($r->content), array("type" => "html"));
@@ -700,6 +721,9 @@ class dfrn {
                else
                        $body = $item['body'];
 
+               // Remove the abstract element. It is only locally important.
+               $body = remove_abstract($body);
+
                if ($type == 'html') {
                        $htmlbody = $body;
 
@@ -832,7 +856,7 @@ class dfrn {
         *
         * @return int Deliver status. -1 means an error.
         */
-       function deliver($owner,$contact,$atom, $dissolve = false) {
+       public static function deliver($owner,$contact,$atom, $dissolve = false) {
 
                $a = get_app();
 
@@ -1053,4 +1077,1368 @@ class dfrn {
 
                return $res->status;
        }
+
+       /**
+        * @brief Add new birthday event for this person
+        *
+        * @param array $contact Contact record
+        * @param string $birthday Birthday of the contact
+        *
+        */
+       private function birthday_event($contact, $birthday) {
+
+               logger("updating birthday: ".$birthday." for contact ".$contact["id"]);
+
+               $bdtext = sprintf(t("%s\'s birthday"), $contact["name"]);
+               $bdtext2 = sprintf(t("Happy Birthday %s"), " [url=".$contact["url"]."]".$contact["name"]."[/url]") ;
+
+
+               $r = q("INSERT INTO `event` (`uid`,`cid`,`created`,`edited`,`start`,`finish`,`summary`,`desc`,`type`)
+                       VALUES ( %d, %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s') ",
+                       intval($contact["uid"]),
+                       intval($contact["id"]),
+                       dbesc(datetime_convert()),
+                       dbesc(datetime_convert()),
+                       dbesc(datetime_convert("UTC","UTC", $birthday)),
+                       dbesc(datetime_convert("UTC","UTC", $birthday." + 1 day ")),
+                       dbesc($bdtext),
+                       dbesc($bdtext2),
+                       dbesc("birthday")
+               );
+       }
+
+       /**
+        * @brief Fetch the author data from head or entry items
+        *
+        * @param object $xpath XPath object
+        * @param object $context In which context should the data be searched
+        * @param array $importer Record of the importer user mixed with contact of the content
+        * @param string $element Element name from which the data is fetched
+        * @param bool $onlyfetch Should the data only be fetched or should it update the contact record as well
+        *
+        * @return Returns an array with relevant data of the author
+        */
+       private function fetchauthor($xpath, $context, $importer, $element, $onlyfetch, $xml = "") {
+
+               $author = array();
+               $author["name"] = $xpath->evaluate($element."/atom:name/text()", $context)->item(0)->nodeValue;
+               $author["link"] = $xpath->evaluate($element."/atom:uri/text()", $context)->item(0)->nodeValue;
+
+               $r = q("SELECT `id`, `uid`, `url`, `network`, `avatar-date`, `name-date`, `uri-date`, `addr`,
+                               `name`, `nick`, `about`, `location`, `keywords`, `bdyear`, `bd`
+                               FROM `contact` WHERE `uid` = %d AND `nurl` = '%s' AND `network` != '%s'",
+                       intval($importer["uid"]), dbesc(normalise_link($author["link"])), dbesc(NETWORK_STATUSNET));
+               if ($r) {
+                       $contact = $r[0];
+                       $author["contact-id"] = $r[0]["id"];
+                       $author["network"] = $r[0]["network"];
+               } else {
+                       if (!$onlyfetch)
+                               logger("Contact ".$author["link"]." wasn't found for user ".$importer["uid"]." XML: ".$xml, LOGGER_DEBUG);
+
+                       $author["contact-id"] = $importer["id"];
+                       $author["network"] = $importer["network"];
+                       $onlyfetch = true;
+               }
+
+               // Until now we aren't serving different sizes - but maybe later
+               $avatarlist = array();
+               // @todo check if "avatar" or "photo" would be the best field in the specification
+               $avatars = $xpath->query($element."/atom:link[@rel='avatar']", $context);
+               foreach($avatars AS $avatar) {
+                       $href = "";
+                       $width = 0;
+                       foreach($avatar->attributes AS $attributes) {
+                               if ($attributes->name == "href")
+                                       $href = $attributes->textContent;
+                               if ($attributes->name == "width")
+                                       $width = $attributes->textContent;
+                               if ($attributes->name == "updated")
+                                       $contact["avatar-date"] = $attributes->textContent;
+                       }
+                       if (($width > 0) AND ($href != ""))
+                               $avatarlist[$width] = $href;
+               }
+               if (count($avatarlist) > 0) {
+                       krsort($avatarlist);
+                       $author["avatar"] = current($avatarlist);
+               }
+
+               if ($r AND !$onlyfetch) {
+                       logger("Check if contact details for contact ".$r[0]["id"]." (".$r[0]["nick"].") have to be updated.", LOGGER_DEBUG);
+
+                       $poco = array("url" => $contact["url"]);
+
+                       // When was the last change to name or uri?
+                       $name_element = $xpath->query($element."/atom:name", $context)->item(0);
+                       foreach($name_element->attributes AS $attributes)
+                               if ($attributes->name == "updated")
+                                       $poco["name-date"] = $attributes->textContent;
+
+                       $link_element = $xpath->query($element."/atom:link", $context)->item(0);
+                       foreach($link_element->attributes AS $attributes)
+                               if ($attributes->name == "updated")
+                                       $poco["uri-date"] = $attributes->textContent;
+
+                       // Update contact data
+                       $value = $xpath->evaluate($element."/dfrn:handle/text()", $context)->item(0)->nodeValue;
+                       if ($value != "")
+                               $poco["addr"] = $value;
+
+                       $value = $xpath->evaluate($element."/poco:displayName/text()", $context)->item(0)->nodeValue;
+                       if ($value != "")
+                               $poco["name"] = $value;
+
+                       $value = $xpath->evaluate($element."/poco:preferredUsername/text()", $context)->item(0)->nodeValue;
+                       if ($value != "")
+                               $poco["nick"] = $value;
+
+                       $value = $xpath->evaluate($element."/poco:note/text()", $context)->item(0)->nodeValue;
+                       if ($value != "")
+                               $poco["about"] = $value;
+
+                       $value = $xpath->evaluate($element."/poco:address/poco:formatted/text()", $context)->item(0)->nodeValue;
+                       if ($value != "")
+                               $poco["location"] = $value;
+
+                       /// @todo Add support for the following fields that we don't support by now in the contact table:
+                       /// - poco:utcOffset
+                       /// - poco:ims
+                       /// - poco:urls
+                       /// - poco:locality
+                       /// - poco:region
+                       /// - poco:country
+
+                       // Save the keywords into the contact table
+                       $tags = array();
+                       $tagelements = $xpath->evaluate($element."/poco:tags/text()", $context);
+                       foreach($tagelements AS $tag)
+                               $tags[$tag->nodeValue] = $tag->nodeValue;
+
+                       if (count($tags))
+                               $poco["keywords"] = implode(", ", $tags);
+
+                       // "dfrn:birthday" contains the birthday converted to UTC
+                       $old_bdyear = $contact["bdyear"];
+
+                       $birthday = $xpath->evaluate($element."/dfrn:birthday/text()", $context)->item(0)->nodeValue;
+
+                       if (strtotime($birthday) > time()) {
+                               $bd_timestamp = strtotime($birthday);
+
+                               $poco["bdyear"] = date("Y", $bd_timestamp);
+                       }
+
+                       // "poco:birthday" is the birthday in the format "yyyy-mm-dd"
+                       $value = $xpath->evaluate($element."/poco:birthday/text()", $context)->item(0)->nodeValue;
+
+                       if (!in_array($value, array("", "0000-00-00"))) {
+                               $bdyear = date("Y");
+                               $value = str_replace("0000", $bdyear, $value);
+
+                               if (strtotime($value) < time()) {
+                                       $value = str_replace($bdyear, $bdyear + 1, $value);
+                                       $bdyear = $bdyear + 1;
+                               }
+
+                               $poco["bd"] = $value;
+                       }
+
+                       $contact = array_merge($contact, $poco);
+
+                       if ($old_bdyear != $contact["bdyear"])
+                               self::birthday_event($contact, $birthday);
+
+                       // Get all field names
+                       $fields = array();
+                       foreach ($r[0] AS $field => $data)
+                               $fields[$field] = $data;
+
+                       unset($fields["id"]);
+                       unset($fields["uid"]);
+                       unset($fields["url"]);
+                       unset($fields["avatar-date"]);
+                       unset($fields["name-date"]);
+                       unset($fields["uri-date"]);
+
+                        // Update check for this field has to be done differently
+                       $datefields = array("name-date", "uri-date");
+                       foreach ($datefields AS $field)
+                               if (strtotime($contact[$field]) > strtotime($r[0][$field])) {
+                                       logger("Difference for contact ".$contact["id"]." in field '".$field."'. Old value: '".$contact[$field]."', new value '".$r[0][$field]."'", LOGGER_DEBUG);
+                                       $update = true;
+                               }
+
+                       foreach ($fields AS $field => $data)
+                               if ($contact[$field] != $r[0][$field]) {
+                                       logger("Difference for contact ".$contact["id"]." in field '".$field."'. Old value: '".$contact[$field]."', new value '".$r[0][$field]."'", LOGGER_DEBUG);
+                                       $update = true;
+                               }
+
+                       if ($update) {
+                               logger("Update contact data for contact ".$contact["id"]." (".$contact["nick"].")", LOGGER_DEBUG);
+
+                               q("UPDATE `contact` SET `name` = '%s', `nick` = '%s', `about` = '%s', `location` = '%s',
+                                       `addr` = '%s', `keywords` = '%s', `bdyear` = '%s', `bd` = '%s',
+                                       `name-date`  = '%s', `uri-date` = '%s'
+                                       WHERE `id` = %d AND `network` = '%s'",
+                                       dbesc($contact["name"]), dbesc($contact["nick"]), dbesc($contact["about"]), dbesc($contact["location"]),
+                                       dbesc($contact["addr"]), dbesc($contact["keywords"]), dbesc($contact["bdyear"]),
+                                       dbesc($contact["bd"]), dbesc($contact["name-date"]), dbesc($contact["uri-date"]),
+                                       intval($contact["id"]), dbesc($contact["network"]));
+                       }
+
+                       update_contact_avatar($author["avatar"], $importer["uid"], $contact["id"],
+                                               (strtotime($contact["avatar-date"]) > strtotime($r[0]["avatar-date"])));
+
+                       // The generation is a sign for the reliability of the provided data.
+                       // It is used in the socgraph.php to prevent that old contact data
+                       // that was relayed over several servers can overwrite contact
+                       // data that we received directly.
+
+                       $poco["generation"] = 2;
+                       $poco["photo"] = $author["avatar"];
+                       update_gcontact($poco);
+               }
+
+               return($author);
+       }
+
+       /**
+        * @brief Transforms activity objects into an XML string
+        *
+        * @param object $xpath XPath object
+        * @param object $activity Activity object
+        * @param text $element element name
+        *
+        * @return string XML string
+        */
+       private function transform_activity($xpath, $activity, $element) {
+               if (!is_object($activity))
+                       return "";
+
+               $obj_doc = new DOMDocument("1.0", "utf-8");
+               $obj_doc->formatOutput = true;
+
+               $obj_element = $obj_doc->createElementNS(NAMESPACE_ATOM1, $element);
+
+               $activity_type = $xpath->query("activity:object-type/text()", $activity)->item(0)->nodeValue;
+               xml_add_element($obj_doc, $obj_element, "type", $activity_type);
+
+               $id = $xpath->query("atom:id", $activity)->item(0);
+               if (is_object($id))
+                       $obj_element->appendChild($obj_doc->importNode($id, true));
+
+               $title = $xpath->query("atom:title", $activity)->item(0);
+               if (is_object($title))
+                       $obj_element->appendChild($obj_doc->importNode($title, true));
+
+               $links = $xpath->query("atom:link", $activity);
+               if (is_object($links))
+                       foreach ($links AS $link)
+                               $obj_element->appendChild($obj_doc->importNode($link, true));
+
+               $content = $xpath->query("atom:content", $activity)->item(0);
+               if (is_object($content))
+                       $obj_element->appendChild($obj_doc->importNode($content, true));
+
+               $obj_doc->appendChild($obj_element);
+
+               $objxml = $obj_doc->saveXML($obj_element);
+
+               // @todo This isn't totally clean. We should find a way to transform the namespaces
+               $objxml = str_replace("<".$element.' xmlns="http://www.w3.org/2005/Atom">', "<".$element.">", $objxml);
+               return($objxml);
+       }
+
+       /**
+        * @brief Processes the mail elements
+        *
+        * @param object $xpath XPath object
+        * @param object $mail mail elements
+        * @param array $importer Record of the importer user mixed with contact of the content
+        */
+       private function process_mail($xpath, $mail, $importer) {
+
+               logger("Processing mails");
+
+               $msg = array();
+               $msg["uid"] = $importer["importer_uid"];
+               $msg["from-name"] = $xpath->query("dfrn:sender/dfrn:name/text()", $mail)->item(0)->nodeValue;
+               $msg["from-url"] = $xpath->query("dfrn:sender/dfrn:uri/text()", $mail)->item(0)->nodeValue;
+               $msg["from-photo"] = $xpath->query("dfrn:sender/dfrn:avatar/text()", $mail)->item(0)->nodeValue;
+               $msg["contact-id"] = $importer["id"];
+               $msg["uri"] = $xpath->query("dfrn:id/text()", $mail)->item(0)->nodeValue;
+               $msg["parent-uri"] = $xpath->query("dfrn:in-reply-to/text()", $mail)->item(0)->nodeValue;
+               $msg["created"] = $xpath->query("dfrn:sentdate/text()", $mail)->item(0)->nodeValue;
+               $msg["title"] = $xpath->query("dfrn:subject/text()", $mail)->item(0)->nodeValue;
+               $msg["body"] = $xpath->query("dfrn:content/text()", $mail)->item(0)->nodeValue;
+               $msg["seen"] = 0;
+               $msg["replied"] = 0;
+
+               dbesc_array($msg);
+
+               $r = dbq("INSERT INTO `mail` (`".implode("`, `", array_keys($msg))."`) VALUES ('".implode("', '", array_values($msg))."')");
+
+               // send notifications.
+
+               $notif_params = array(
+                       "type" => NOTIFY_MAIL,
+                       "notify_flags" => $importer["notify-flags"],
+                       "language" => $importer["language"],
+                       "to_name" => $importer["username"],
+                       "to_email" => $importer["email"],
+                       "uid" => $importer["importer_uid"],
+                       "item" => $msg,
+                       "source_name" => $msg["from-name"],
+                       "source_link" => $importer["url"],
+                       "source_photo" => $importer["thumb"],
+                       "verb" => ACTIVITY_POST,
+                       "otype" => "mail"
+               );
+
+               notification($notif_params);
+
+               logger("Mail is processed, notification was sent.");
+       }
+
+       /**
+        * @brief Processes the suggestion elements
+        *
+        * @param object $xpath XPath object
+        * @param object $suggestion suggestion elements
+        * @param array $importer Record of the importer user mixed with contact of the content
+        */
+       private function process_suggestion($xpath, $suggestion, $importer) {
+
+               logger("Processing suggestions");
+
+               $suggest = array();
+               $suggest["uid"] = $importer["importer_uid"];
+               $suggest["cid"] = $importer["id"];
+               $suggest["url"] = $xpath->query("dfrn:url/text()", $suggestion)->item(0)->nodeValue;
+               $suggest["name"] = $xpath->query("dfrn:name/text()", $suggestion)->item(0)->nodeValue;
+               $suggest["photo"] = $xpath->query("dfrn:photo/text()", $suggestion)->item(0)->nodeValue;
+               $suggest["request"] = $xpath->query("dfrn:request/text()", $suggestion)->item(0)->nodeValue;
+               $suggest["body"] = $xpath->query("dfrn:note/text()", $suggestion)->item(0)->nodeValue;
+
+               // Does our member already have a friend matching this description?
+
+               $r = q("SELECT `id` FROM `contact` WHERE `name` = '%s' AND `nurl` = '%s' AND `uid` = %d LIMIT 1",
+                       dbesc($suggest["name"]),
+                       dbesc(normalise_link($suggest["url"])),
+                       intval($suggest["uid"])
+               );
+               if(count($r))
+                       return false;
+
+               // Do we already have an fcontact record for this person?
+
+               $fid = 0;
+               $r = q("SELECT `id` FROM `fcontact` WHERE `url` = '%s' AND `name` = '%s' AND `request` = '%s' LIMIT 1",
+                       dbesc($suggest["url"]),
+                       dbesc($suggest["name"]),
+                       dbesc($suggest["request"])
+               );
+               if(count($r)) {
+                       $fid = $r[0]["id"];
+
+                       // OK, we do. Do we already have an introduction for this person ?
+                       $r = q("SELECT `id` FROM `intro` WHERE `uid` = %d AND `fid` = %d LIMIT 1",
+                               intval($suggest["uid"]),
+                               intval($fid)
+                       );
+                       if(count($r))
+                               return false;
+               }
+               if(!$fid)
+                       $r = q("INSERT INTO `fcontact` (`name`,`url`,`photo`,`request`) VALUES ('%s', '%s', '%s', '%s')",
+                       dbesc($suggest["name"]),
+                       dbesc($suggest["url"]),
+                       dbesc($suggest["photo"]),
+                       dbesc($suggest["request"])
+               );
+               $r = q("SELECT `id` FROM `fcontact` WHERE `url` = '%s' AND `name` = '%s' AND `request` = '%s' LIMIT 1",
+                       dbesc($suggest["url"]),
+                       dbesc($suggest["name"]),
+                       dbesc($suggest["request"])
+               );
+               if(count($r))
+                       $fid = $r[0]["id"];
+               else
+                       // database record did not get created. Quietly give up.
+                       return false;
+
+
+               $hash = random_string();
+
+               $r = q("INSERT INTO `intro` (`uid`, `fid`, `contact-id`, `note`, `hash`, `datetime`, `blocked`)
+                       VALUES(%d, %d, %d, '%s', '%s', '%s', %d)",
+                       intval($suggest["uid"]),
+                       intval($fid),
+                       intval($suggest["cid"]),
+                       dbesc($suggest["body"]),
+                       dbesc($hash),
+                       dbesc(datetime_convert()),
+                       intval(0)
+               );
+
+               notification(array(
+                       "type"         => NOTIFY_SUGGEST,
+                       "notify_flags" => $importer["notify-flags"],
+                       "language"     => $importer["language"],
+                       "to_name"      => $importer["username"],
+                       "to_email"     => $importer["email"],
+                       "uid"          => $importer["importer_uid"],
+                       "item"         => $suggest,
+                       "link"         => App::get_baseurl()."/notifications/intros",
+                       "source_name"  => $importer["name"],
+                       "source_link"  => $importer["url"],
+                       "source_photo" => $importer["photo"],
+                       "verb"         => ACTIVITY_REQ_FRIEND,
+                       "otype"        => "intro"
+               ));
+
+               return true;
+
+       }
+
+       /**
+        * @brief Processes the relocation elements
+        *
+        * @param object $xpath XPath object
+        * @param object $relocation relocation elements
+        * @param array $importer Record of the importer user mixed with contact of the content
+        */
+       private function process_relocation($xpath, $relocation, $importer) {
+
+               logger("Processing relocations");
+
+               $relocate = array();
+               $relocate["uid"] = $importer["importer_uid"];
+               $relocate["cid"] = $importer["id"];
+               $relocate["url"] = $xpath->query("dfrn:url/text()", $relocation)->item(0)->nodeValue;
+               $relocate["name"] = $xpath->query("dfrn:name/text()", $relocation)->item(0)->nodeValue;
+               $relocate["photo"] = $xpath->query("dfrn:photo/text()", $relocation)->item(0)->nodeValue;
+               $relocate["thumb"] = $xpath->query("dfrn:thumb/text()", $relocation)->item(0)->nodeValue;
+               $relocate["micro"] = $xpath->query("dfrn:micro/text()", $relocation)->item(0)->nodeValue;
+               $relocate["request"] = $xpath->query("dfrn:request/text()", $relocation)->item(0)->nodeValue;
+               $relocate["confirm"] = $xpath->query("dfrn:confirm/text()", $relocation)->item(0)->nodeValue;
+               $relocate["notify"] = $xpath->query("dfrn:notify/text()", $relocation)->item(0)->nodeValue;
+               $relocate["poll"] = $xpath->query("dfrn:poll/text()", $relocation)->item(0)->nodeValue;
+               $relocate["sitepubkey"] = $xpath->query("dfrn:sitepubkey/text()", $relocation)->item(0)->nodeValue;
+
+               // update contact
+               $r = q("SELECT `photo`, `url` FROM `contact` WHERE `id` = %d AND `uid` = %d;",
+                       intval($importer["id"]),
+                       intval($importer["importer_uid"]));
+               if (!$r)
+                       return false;
+
+               $old = $r[0];
+
+               $x = q("UPDATE `contact` SET
+                                       `name` = '%s',
+                                       `photo` = '%s',
+                                       `thumb` = '%s',
+                                       `micro` = '%s',
+                                       `url` = '%s',
+                                       `nurl` = '%s',
+                                       `request` = '%s',
+                                       `confirm` = '%s',
+                                       `notify` = '%s',
+                                       `poll` = '%s',
+                                       `site-pubkey` = '%s'
+                       WHERE `id` = %d AND `uid` = %d;",
+                                       dbesc($relocate["name"]),
+                                       dbesc($relocate["photo"]),
+                                       dbesc($relocate["thumb"]),
+                                       dbesc($relocate["micro"]),
+                                       dbesc($relocate["url"]),
+                                       dbesc(normalise_link($relocate["url"])),
+                                       dbesc($relocate["request"]),
+                                       dbesc($relocate["confirm"]),
+                                       dbesc($relocate["notify"]),
+                                       dbesc($relocate["poll"]),
+                                       dbesc($relocate["sitepubkey"]),
+                                       intval($importer["id"]),
+                                       intval($importer["importer_uid"]));
+
+               if ($x === false)
+                       return false;
+
+               // update items
+               $fields = array(
+                       'owner-link' => array($old["url"], $relocate["url"]),
+                       'author-link' => array($old["url"], $relocate["url"]),
+                       'owner-avatar' => array($old["photo"], $relocate["photo"]),
+                       'author-avatar' => array($old["photo"], $relocate["photo"]),
+                       );
+               foreach ($fields as $n=>$f){
+                       $x = q("UPDATE `item` SET `%s` = '%s' WHERE `%s` = '%s' AND `uid` = %d",
+                                       $n, dbesc($f[1]),
+                                       $n, dbesc($f[0]),
+                                       intval($importer["importer_uid"]));
+                               if ($x === false)
+                                       return false;
+                       }
+
+               /// @TODO
+               /// merge with current record, current contents have priority
+               /// update record, set url-updated
+               /// update profile photos
+               /// schedule a scan?
+               return true;
+       }
+
+       /**
+        * @brief Updates an item
+        *
+        * @param array $current the current item record
+        * @param array $item the new item record
+        * @param array $importer Record of the importer user mixed with contact of the content
+        * @param int $entrytype Is it a toplevel entry, a comment or a relayed comment?
+        */
+       private function update_content($current, $item, $importer, $entrytype) {
+               $changed = false;
+
+               if (edited_timestamp_is_newer($current, $item)) {
+
+                       // do not accept (ignore) an earlier edit than one we currently have.
+                       if(datetime_convert("UTC","UTC",$item["edited"]) < $current["edited"])
+                               return(false);
+
+                       $r = q("UPDATE `item` SET `title` = '%s', `body` = '%s', `tag` = '%s', `edited` = '%s', `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d",
+                               dbesc($item["title"]),
+                               dbesc($item["body"]),
+                               dbesc($item["tag"]),
+                               dbesc(datetime_convert("UTC","UTC",$item["edited"])),
+                               dbesc(datetime_convert()),
+                               dbesc($item["uri"]),
+                               intval($importer["importer_uid"])
+                       );
+                       create_tags_from_itemuri($item["uri"], $importer["importer_uid"]);
+                       update_thread_uri($item["uri"], $importer["importer_uid"]);
+
+                       $changed = true;
+
+                       if ($entrytype == DFRN_REPLY_RC)
+                               proc_run("php", "include/notifier.php","comment-import", $current["id"]);
+               }
+
+               // update last-child if it changes
+               if($item["last-child"] AND ($item["last-child"] != $current["last-child"])) {
+                       $r = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d",
+                               dbesc(datetime_convert()),
+                               dbesc($item["parent-uri"]),
+                               intval($importer["importer_uid"])
+                       );
+                       $r = q("UPDATE `item` SET `last-child` = %d , `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d",
+                               intval($item["last-child"]),
+                               dbesc(datetime_convert()),
+                               dbesc($item["uri"]),
+                               intval($importer["importer_uid"])
+                       );
+               }
+               return $changed;
+       }
+
+       /**
+        * @brief Detects the entry type of the item
+        *
+        * @param array $importer Record of the importer user mixed with contact of the content
+        * @param array $item the new item record
+        *
+        * @return int Is it a toplevel entry, a comment or a relayed comment?
+        */
+       private function get_entry_type($importer, $item) {
+               if ($item["parent-uri"] != $item["uri"]) {
+                       $community = false;
+
+                       if($importer["page-flags"] == PAGE_COMMUNITY || $importer["page-flags"] == PAGE_PRVGROUP) {
+                               $sql_extra = "";
+                               $community = true;
+                               logger("possible community action");
+                       } else
+                               $sql_extra = " AND `contact`.`self` AND `item`.`wall` ";
+
+                       // was the top-level post for this action written by somebody on this site?
+                       // Specifically, the recipient?
+
+                       $is_a_remote_action = false;
+
+                       $r = q("SELECT `item`.`parent-uri` FROM `item`
+                               WHERE `item`.`uri` = '%s'
+                               LIMIT 1",
+                               dbesc($item["parent-uri"])
+                       );
+                       if($r && count($r)) {
+                               $r = q("SELECT `item`.`forum_mode`, `item`.`wall` FROM `item`
+                                       INNER JOIN `contact` ON `contact`.`id` = `item`.`contact-id`
+                                       WHERE `item`.`uri` = '%s' AND (`item`.`parent-uri` = '%s' OR `item`.`thr-parent` = '%s')
+                                       AND `item`.`uid` = %d
+                                       $sql_extra
+                                       LIMIT 1",
+                                       dbesc($r[0]["parent-uri"]),
+                                       dbesc($r[0]["parent-uri"]),
+                                       dbesc($r[0]["parent-uri"]),
+                                       intval($importer["importer_uid"])
+                               );
+                               if($r && count($r))
+                                       $is_a_remote_action = true;
+                       }
+
+                       // Does this have the characteristics of a community or private group action?
+                       // If it's an action to a wall post on a community/prvgroup page it's a
+                       // valid community action. Also forum_mode makes it valid for sure.
+                       // If neither, it's not.
+
+                       if($is_a_remote_action && $community) {
+                               if((!$r[0]["forum_mode"]) && (!$r[0]["wall"])) {
+                                       $is_a_remote_action = false;
+                                       logger("not a community action");
+                               }
+                       }
+
+                       if ($is_a_remote_action)
+                               return DFRN_REPLY_RC;
+                       else
+                               return DFRN_REPLY;
+
+               } else
+                       return DFRN_TOP_LEVEL;
+
+       }
+
+       /**
+        * @brief Send a "poke"
+        *
+        * @param array $item the new item record
+        * @param array $importer Record of the importer user mixed with contact of the content
+        * @param int $posted_id The record number of item record that was just posted
+        */
+       private function do_poke($item, $importer, $posted_id) {
+               $verb = urldecode(substr($item["verb"],strpos($item["verb"], "#")+1));
+               if(!$verb)
+                       return;
+               $xo = parse_xml_string($item["object"],false);
+
+               if(($xo->type == ACTIVITY_OBJ_PERSON) && ($xo->id)) {
+
+                       // somebody was poked/prodded. Was it me?
+                       foreach($xo->link as $l) {
+                               $atts = $l->attributes();
+                               switch($atts["rel"]) {
+                                       case "alternate":
+                                               $Blink = $atts["href"];
+                                               break;
+                                       default:
+                                               break;
+                               }
+                       }
+
+                       if($Blink && link_compare($Blink,App::get_baseurl()."/profile/".$importer["nickname"])) {
+
+                               // send a notification
+                               notification(array(
+                                       "type"         => NOTIFY_POKE,
+                                       "notify_flags" => $importer["notify-flags"],
+                                       "language"     => $importer["language"],
+                                       "to_name"      => $importer["username"],
+                                       "to_email"     => $importer["email"],
+                                       "uid"          => $importer["importer_uid"],
+                                       "item"         => $item,
+                                       "link"         => App::get_baseurl()."/display/".urlencode(get_item_guid($posted_id)),
+                                       "source_name"  => stripslashes($item["author-name"]),
+                                       "source_link"  => $item["author-link"],
+                                       "source_photo" => ((link_compare($item["author-link"],$importer["url"]))
+                                               ? $importer["thumb"] : $item["author-avatar"]),
+                                       "verb"         => $item["verb"],
+                                       "otype"        => "person",
+                                       "activity"     => $verb,
+                                       "parent"       => $item["parent"]
+                               ));
+                       }
+               }
+       }
+
+       /**
+        * @brief Processes several actions, depending on the verb
+        *
+        * @param int $entrytype Is it a toplevel entry, a comment or a relayed comment?
+        * @param array $importer Record of the importer user mixed with contact of the content
+        * @param array $item the new item record
+        * @param bool $is_like Is the verb a "like"?
+        *
+        * @return bool Should the processing of the entries be continued?
+        */
+       private function process_verbs($entrytype, $importer, &$item, &$is_like) {
+               if (($entrytype == DFRN_TOP_LEVEL)) {
+                       // The filling of the the "contact" variable is done for legcy reasons
+                       // The functions below are partly used by ostatus.php as well - where we have this variable
+                       $r = q("SELECT * FROM `contact` WHERE `id` = %d", intval($importer["id"]));
+                       $contact = $r[0];
+                       $nickname = $contact["nick"];
+
+                       // Big question: Do we need these functions? They were part of the "consume_feed" function.
+                       // This function once was responsible for DFRN and OStatus.
+                       if(activity_match($item["verb"],ACTIVITY_FOLLOW)) {
+                               logger("New follower");
+                               new_follower($importer, $contact, $item, $nickname);
+                               return false;
+                       }
+                       if(activity_match($item["verb"],ACTIVITY_UNFOLLOW))  {
+                               logger("Lost follower");
+                               lose_follower($importer, $contact, $item);
+                               return false;
+                       }
+                       if(activity_match($item["verb"],ACTIVITY_REQ_FRIEND)) {
+                               logger("New friend request");
+                               new_follower($importer, $contact, $item, $nickname, true);
+                               return false;
+                       }
+                       if(activity_match($item["verb"],ACTIVITY_UNFRIEND))  {
+                               logger("Lost sharer");
+                               lose_sharer($importer, $contact, $item);
+                               return false;
+                       }
+               } else {
+                       if(($item["verb"] === ACTIVITY_LIKE)
+                               || ($item["verb"] === ACTIVITY_DISLIKE)
+                               || ($item["verb"] === ACTIVITY_ATTEND)
+                               || ($item["verb"] === ACTIVITY_ATTENDNO)
+                               || ($item["verb"] === ACTIVITY_ATTENDMAYBE)) {
+                               $is_like = true;
+                               $item["type"] = "activity";
+                               $item["gravity"] = GRAVITY_LIKE;
+                               // only one like or dislike per person
+                               // splitted into two queries for performance issues
+                               $r = q("SELECT `id` FROM `item` WHERE `uid` = %d AND `author-link` = '%s' AND `verb` = '%s' AND `parent-uri` = '%s' AND NOT `deleted` LIMIT 1",
+                                       intval($item["uid"]),
+                                       dbesc($item["author-link"]),
+                                       dbesc($item["verb"]),
+                                       dbesc($item["parent-uri"])
+                               );
+                               if($r && count($r))
+                                       return false;
+
+                               $r = q("SELECT `id` FROM `item` WHERE `uid` = %d AND `author-link` = '%s' AND `verb` = '%s' AND `thr-parent` = '%s' AND NOT `deleted` LIMIT 1",
+                                       intval($item["uid"]),
+                                       dbesc($item["author-link"]),
+                                       dbesc($item["verb"]),
+                                       dbesc($item["parent-uri"])
+                               );
+                               if($r && count($r))
+                                       return false;
+                       } else
+                               $is_like = false;
+
+                       if(($item["verb"] === ACTIVITY_TAG) && ($item["object-type"] === ACTIVITY_OBJ_TAGTERM)) {
+
+                               $xo = parse_xml_string($item["object"],false);
+                               $xt = parse_xml_string($item["target"],false);
+
+                               if($xt->type == ACTIVITY_OBJ_NOTE) {
+                                       $r = q("SELECT `id`, `tag` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
+                                               dbesc($xt->id),
+                                               intval($importer["importer_uid"])
+                                       );
+
+                                       if(!count($r))
+                                               return false;
+
+                                       // extract tag, if not duplicate, add to parent item
+                                       if($xo->content) {
+                                               if(!(stristr($r[0]["tag"],trim($xo->content)))) {
+                                                       q("UPDATE `item` SET `tag` = '%s' WHERE `id` = %d",
+                                                               dbesc($r[0]["tag"] . (strlen($r[0]["tag"]) ? ',' : '') . '#[url=' . $xo->id . ']'. $xo->content . '[/url]'),
+                                                               intval($r[0]["id"])
+                                                       );
+                                                       create_tags_from_item($r[0]["id"]);
+                                               }
+                                       }
+                               }
+                       }
+               }
+               return true;
+       }
+
+       /**
+        * @brief Processes the link elements
+        *
+        * @param object $links link elements
+        * @param array $item the item record
+        */
+       private function parse_links($links, &$item) {
+               $rel = "";
+               $href = "";
+               $type = "";
+               $length = "0";
+               $title = "";
+               foreach ($links AS $link) {
+                       foreach($link->attributes AS $attributes) {
+                               if ($attributes->name == "href")
+                                       $href = $attributes->textContent;
+                               if ($attributes->name == "rel")
+                                       $rel = $attributes->textContent;
+                               if ($attributes->name == "type")
+                                       $type = $attributes->textContent;
+                               if ($attributes->name == "length")
+                                       $length = $attributes->textContent;
+                               if ($attributes->name == "title")
+                                       $title = $attributes->textContent;
+                       }
+                       if (($rel != "") AND ($href != ""))
+                               switch($rel) {
+                                       case "alternate":
+                                               $item["plink"] = $href;
+                                               break;
+                                       case "enclosure":
+                                               $enclosure = $href;
+                                               if(strlen($item["attach"]))
+                                                       $item["attach"] .= ",";
+
+                                               $item["attach"] .= '[attach]href="'.$href.'" length="'.$length.'" type="'.$type.'" title="'.$title.'"[/attach]';
+                                               break;
+                               }
+               }
+       }
+
+       /**
+        * @brief Processes the entry elements which contain the items and comments
+        *
+        * @param array $header Array of the header elements that always stay the same
+        * @param object $xpath XPath object
+        * @param object $entry entry elements
+        * @param array $importer Record of the importer user mixed with contact of the content
+        */
+       private function process_entry($header, $xpath, $entry, $importer) {
+
+               logger("Processing entries");
+
+               $item = $header;
+
+               // Get the uri
+               $item["uri"] = $xpath->query("atom:id/text()", $entry)->item(0)->nodeValue;
+
+               // Fetch the owner
+               $owner = self::fetchauthor($xpath, $entry, $importer, "dfrn:owner", true);
+
+               $item["owner-name"] = $owner["name"];
+               $item["owner-link"] = $owner["link"];
+               $item["owner-avatar"] = $owner["avatar"];
+
+               // fetch the author
+               $author = self::fetchauthor($xpath, $entry, $importer, "atom:author", true);
+
+               $item["author-name"] = $author["name"];
+               $item["author-link"] = $author["link"];
+               $item["author-avatar"] = $author["avatar"];
+
+               $item["title"] = $xpath->query("atom:title/text()", $entry)->item(0)->nodeValue;
+
+               $item["created"] = $xpath->query("atom:published/text()", $entry)->item(0)->nodeValue;
+               $item["edited"] = $xpath->query("atom:updated/text()", $entry)->item(0)->nodeValue;
+
+               $item["body"] = $xpath->query("dfrn:env/text()", $entry)->item(0)->nodeValue;
+               $item["body"] = str_replace(array(' ',"\t","\r","\n"), array('','','',''),$item["body"]);
+               // make sure nobody is trying to sneak some html tags by us
+               $item["body"] = notags(base64url_decode($item["body"]));
+
+               $item["body"] = limit_body_size($item["body"]);
+
+               /// @todo Do we really need this check for HTML elements? (It was copied from the old function)
+               if((strpos($item['body'],'<') !== false) && (strpos($item['body'],'>') !== false)) {
+
+                       $item['body'] = reltoabs($item['body'],$base_url);
+
+                       $item['body'] = html2bb_video($item['body']);
+
+                       $item['body'] = oembed_html2bbcode($item['body']);
+
+                       $config = HTMLPurifier_Config::createDefault();
+                       $config->set('Cache.DefinitionImpl', null);
+
+                       // we shouldn't need a whitelist, because the bbcode converter
+                       // will strip out any unsupported tags.
+
+                       $purifier = new HTMLPurifier($config);
+                       $item['body'] = $purifier->purify($item['body']);
+
+                       $item['body'] = @html2bbcode($item['body']);
+               }
+
+               /// @todo We should check for a repeated post and if we know the repeated author.
+
+               // We don't need the content element since "dfrn:env" is always present
+               //$item["body"] = $xpath->query("atom:content/text()", $entry)->item(0)->nodeValue;
+
+               $item["last-child"] = $xpath->query("dfrn:comment-allow/text()", $entry)->item(0)->nodeValue;
+               $item["location"] = $xpath->query("dfrn:location/text()", $entry)->item(0)->nodeValue;
+
+               $georsspoint = $xpath->query("georss:point", $entry);
+               if ($georsspoint)
+                       $item["coord"] = $georsspoint->item(0)->nodeValue;
+
+               $item["private"] = $xpath->query("dfrn:private/text()", $entry)->item(0)->nodeValue;
+
+               $item["extid"] = $xpath->query("dfrn:extid/text()", $entry)->item(0)->nodeValue;
+
+               if ($xpath->query("dfrn:extid/text()", $entry)->item(0)->nodeValue == "true")
+                       $item["bookmark"] = true;
+
+               $notice_info = $xpath->query("statusnet:notice_info", $entry);
+               if ($notice_info AND ($notice_info->length > 0)) {
+                       foreach($notice_info->item(0)->attributes AS $attributes) {
+                               if ($attributes->name == "source")
+                                       $item["app"] = strip_tags($attributes->textContent);
+                       }
+               }
+
+               $item["guid"] = $xpath->query("dfrn:diaspora_guid/text()", $entry)->item(0)->nodeValue;
+
+               // We store the data from "dfrn:diaspora_signature" in a different table, this is done in "item_store"
+               $dsprsig = unxmlify($xpath->query("dfrn:diaspora_signature/text()", $entry)->item(0)->nodeValue);
+               if ($dsprsig != "")
+                       $item["dsprsig"] = $dsprsig;
+
+               $item["verb"] = $xpath->query("activity:verb/text()", $entry)->item(0)->nodeValue;
+
+               if ($xpath->query("activity:object-type/text()", $entry)->item(0)->nodeValue != "")
+                       $item["object-type"] = $xpath->query("activity:object-type/text()", $entry)->item(0)->nodeValue;
+
+               $object = $xpath->query("activity:object", $entry)->item(0);
+               $item["object"] = self::transform_activity($xpath, $object, "object");
+
+               if (trim($item["object"]) != "") {
+                       $r = parse_xml_string($item["object"], false);
+                       if (isset($r->type))
+                               $item["object-type"] = $r->type;
+               }
+
+               $target = $xpath->query("activity:target", $entry)->item(0);
+               $item["target"] = self::transform_activity($xpath, $target, "target");
+
+               $categories = $xpath->query("atom:category", $entry);
+               if ($categories) {
+                       foreach ($categories AS $category) {
+                               foreach($category->attributes AS $attributes)
+                                       if ($attributes->name == "term") {
+                                               $term = $attributes->textContent;
+                                               if(strlen($item["tag"]))
+                                                       $item["tag"] .= ",";
+
+                                               $item["tag"] .= "#[url=".App::get_baseurl()."/search?tag=".$term."]".$term."[/url]";
+                                       }
+                       }
+               }
+
+               $enclosure = "";
+
+               $links = $xpath->query("atom:link", $entry);
+               if ($links)
+                       self::parse_links($links, $item);
+
+               // Is it a reply or a top level posting?
+               $item["parent-uri"] = $item["uri"];
+
+               $inreplyto = $xpath->query("thr:in-reply-to", $entry);
+               if (is_object($inreplyto->item(0)))
+                       foreach($inreplyto->item(0)->attributes AS $attributes)
+                               if ($attributes->name == "ref")
+                                       $item["parent-uri"] = $attributes->textContent;
+
+               // Get the type of the item (Top level post, reply or remote reply)
+               $entrytype = self::get_entry_type($importer, $item);
+
+               // Now assign the rest of the values that depend on the type of the message
+               if (in_array($entrytype, array(DFRN_REPLY, DFRN_REPLY_RC))) {
+                       if (!isset($item["object-type"]))
+                               $item["object-type"] = ACTIVITY_OBJ_COMMENT;
+
+                       if ($item["contact-id"] != $owner["contact-id"])
+                               $item["contact-id"] = $owner["contact-id"];
+
+                       if (($item["network"] != $owner["network"]) AND ($owner["network"] != ""))
+                               $item["network"] = $owner["network"];
+
+                       if ($item["contact-id"] != $author["contact-id"])
+                               $item["contact-id"] = $author["contact-id"];
+
+                       if (($item["network"] != $author["network"]) AND ($author["network"] != ""))
+                               $item["network"] = $author["network"];
+
+                       // This code was taken from the old DFRN code
+                       // When activated, forums don't work.
+                       // And: Why should we disallow commenting by followers?
+                       // the behaviour is now similar to the Diaspora part.
+                       //if($importer["rel"] == CONTACT_IS_FOLLOWER) {
+                       //      logger("Contact ".$importer["id"]." is only follower. Quitting", LOGGER_DEBUG);
+                       //      return;
+                       //}
+               }
+
+               if ($entrytype == DFRN_REPLY_RC) {
+                       $item["type"] = "remote-comment";
+                       $item["wall"] = 1;
+               } elseif ($entrytype == DFRN_TOP_LEVEL) {
+                       if (!isset($item["object-type"]))
+                               $item["object-type"] = ACTIVITY_OBJ_NOTE;
+
+                       // Is it an event?
+                       if ($item["object-type"] == ACTIVITY_OBJ_EVENT) {
+                               logger("Item ".$item["uri"]." seems to contain an event.", LOGGER_DEBUG);
+                               $ev = bbtoevent($item["body"]);
+                               if((x($ev, "desc") || x($ev, "summary")) && x($ev, "start")) {
+                                       logger("Event in item ".$item["uri"]." was found.", LOGGER_DEBUG);
+                                       $ev["cid"] = $importer["id"];
+                                       $ev["uid"] = $importer["uid"];
+                                       $ev["uri"] = $item["uri"];
+                                       $ev["edited"] = $item["edited"];
+                                       $ev['private'] = $item['private'];
+                                       $ev["guid"] = $item["guid"];
+
+                                       $r = q("SELECT `id` FROM `event` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
+                                               dbesc($item["uri"]),
+                                               intval($importer["uid"])
+                                       );
+                                       if(count($r))
+                                               $ev["id"] = $r[0]["id"];
+
+                                       $event_id = event_store($ev);
+                                       logger("Event ".$event_id." was stored", LOGGER_DEBUG);
+                                       return;
+                               }
+                       }
+               }
+
+               $r = q("SELECT `id`, `uid`, `last-child`, `edited`, `body` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
+                       dbesc($item["uri"]),
+                       intval($importer["importer_uid"])
+               );
+
+               if (!self::process_verbs($entrytype, $importer, $item, $is_like)) {
+                       logger("Exiting because 'process_verbs' told us so", LOGGER_DEBUG);
+                       return;
+               }
+
+               // Update content if 'updated' changes
+               if(count($r)) {
+                       if (self::update_content($r[0], $item, $importer, $entrytype))
+                               logger("Item ".$item["uri"]." was updated.", LOGGER_DEBUG);
+                       else
+                               logger("Item ".$item["uri"]." already existed.", LOGGER_DEBUG);
+                       return;
+               }
+
+               if (in_array($entrytype, array(DFRN_REPLY, DFRN_REPLY_RC))) {
+                       $posted_id = item_store($item);
+                       $parent = 0;
+
+                       if($posted_id) {
+
+                               logger("Reply from contact ".$item["contact-id"]." was stored with id ".$posted_id, LOGGER_DEBUG);
+
+                               $item["id"] = $posted_id;
+
+                               $r = q("SELECT `parent`, `parent-uri` FROM `item` WHERE `id` = %d AND `uid` = %d LIMIT 1",
+                                       intval($posted_id),
+                                       intval($importer["importer_uid"])
+                               );
+                               if(count($r)) {
+                                       $parent = $r[0]["parent"];
+                                       $parent_uri = $r[0]["parent-uri"];
+                               }
+
+                               if(!$is_like) {
+                                       $r1 = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `uid` = %d AND `parent` = %d",
+                                               dbesc(datetime_convert()),
+                                               intval($importer["importer_uid"]),
+                                               intval($r[0]["parent"])
+                                       );
+
+                                       $r2 = q("UPDATE `item` SET `last-child` = 1, `changed` = '%s' WHERE `uid` = %d AND `id` = %d",
+                                               dbesc(datetime_convert()),
+                                               intval($importer["importer_uid"]),
+                                               intval($posted_id)
+                                       );
+                               }
+
+                               if($posted_id AND $parent AND ($entrytype == DFRN_REPLY_RC)) {
+                                       logger("Notifying followers about comment ".$posted_id, LOGGER_DEBUG);
+                                       proc_run("php", "include/notifier.php", "comment-import", $posted_id);
+                               }
+
+                               return true;
+                       }
+               } else { // $entrytype == DFRN_TOP_LEVEL
+                       if(!link_compare($item["owner-link"],$importer["url"])) {
+                               // The item owner info is not our contact. It's OK and is to be expected if this is a tgroup delivery,
+                               // but otherwise there's a possible data mixup on the sender's system.
+                               // the tgroup delivery code called from item_store will correct it if it's a forum,
+                               // but we're going to unconditionally correct it here so that the post will always be owned by our contact.
+                               logger('Correcting item owner.', LOGGER_DEBUG);
+                               $item["owner-name"]   = $importer["senderName"];
+                               $item["owner-link"]   = $importer["url"];
+                               $item["owner-avatar"] = $importer["thumb"];
+                       }
+
+                       if(($importer["rel"] == CONTACT_IS_FOLLOWER) && (!tgroup_check($importer["importer_uid"], $item))) {
+                               logger("Contact ".$importer["id"]." is only follower and tgroup check was negative.", LOGGER_DEBUG);
+                               return;
+                       }
+
+                       // This is my contact on another system, but it's really me.
+                       // Turn this into a wall post.
+                       $notify = item_is_remote_self($importer, $item);
+
+                       $posted_id = item_store($item, false, $notify);
+
+                       logger("Item was stored with id ".$posted_id, LOGGER_DEBUG);
+
+                       if(stristr($item["verb"],ACTIVITY_POKE))
+                               self::do_poke($item, $importer, $posted_id);
+               }
+       }
+
+       /**
+        * @brief Deletes items
+        *
+        * @param object $xpath XPath object
+        * @param object $deletion deletion elements
+        * @param array $importer Record of the importer user mixed with contact of the content
+        */
+       private function process_deletion($xpath, $deletion, $importer) {
+
+               logger("Processing deletions");
+
+               foreach($deletion->attributes AS $attributes) {
+                       if ($attributes->name == "ref")
+                               $uri = $attributes->textContent;
+                       if ($attributes->name == "when")
+                               $when = $attributes->textContent;
+               }
+               if ($when)
+                       $when = datetime_convert("UTC", "UTC", $when, "Y-m-d H:i:s");
+               else
+                       $when = datetime_convert("UTC", "UTC", "now", "Y-m-d H:i:s");
+
+               if (!$uri OR !$importer["id"])
+                       return false;
+
+               /// @todo Only select the used fields
+               $r = q("SELECT `item`.*, `contact`.`self` FROM `item` INNER JOIN `contact` on `item`.`contact-id` = `contact`.`id`
+                               WHERE `uri` = '%s' AND `item`.`uid` = %d AND `contact-id` = %d AND NOT `item`.`file` LIKE '%%[%%' LIMIT 1",
+                               dbesc($uri),
+                               intval($importer["uid"]),
+                               intval($importer["id"])
+                       );
+               if(!count($r)) {
+                       logger("Item with uri ".$uri." from contact ".$importer["id"]." for user ".$importer["uid"]." wasn't found.", LOGGER_DEBUG);
+                       return;
+               } else {
+
+                       $item = $r[0];
+
+                       $entrytype = self::get_entry_type($importer, $item);
+
+                       if(!$item["deleted"])
+                               logger('deleting item '.$item["id"].' uri='.$uri, LOGGER_DEBUG);
+                       else
+                               return;
+
+                       if($item["object-type"] === ACTIVITY_OBJ_EVENT) {
+                               logger("Deleting event ".$item["event-id"], LOGGER_DEBUG);
+                               event_delete($item["event-id"]);
+                       }
+
+                       if(($item["verb"] === ACTIVITY_TAG) && ($item["object-type"] === ACTIVITY_OBJ_TAGTERM)) {
+                               $xo = parse_xml_string($item["object"],false);
+                               $xt = parse_xml_string($item["target"],false);
+                               if($xt->type === ACTIVITY_OBJ_NOTE) {
+                                       $i = q("SELECT `id`, `contact-id`, `tag` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
+                                               dbesc($xt->id),
+                                               intval($importer["importer_uid"])
+                                       );
+                                       if(count($i)) {
+
+                                               // For tags, the owner cannot remove the tag on the author's copy of the post.
+
+                                               $owner_remove = (($item["contact-id"] == $i[0]["contact-id"]) ? true: false);
+                                               $author_remove = (($item["origin"] && $item["self"]) ? true : false);
+                                               $author_copy = (($item["origin"]) ? true : false);
+
+                                               if($owner_remove && $author_copy)
+                                                       return;
+                                               if($author_remove || $owner_remove) {
+                                                       $tags = explode(',',$i[0]["tag"]);
+                                                       $newtags = array();
+                                                       if(count($tags)) {
+                                                               foreach($tags as $tag)
+                                                                       if(trim($tag) !== trim($xo->body))
+                                                                               $newtags[] = trim($tag);
+                                                       }
+                                                       q("UPDATE `item` SET `tag` = '%s' WHERE `id` = %d",
+                                                               dbesc(implode(',',$newtags)),
+                                                               intval($i[0]["id"])
+                                                       );
+                                                       create_tags_from_item($i[0]["id"]);
+                                               }
+                                       }
+                               }
+                       }
+
+                       if($entrytype == DFRN_TOP_LEVEL) {
+                               $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s',
+                                               `body` = '', `title` = ''
+                                       WHERE `parent-uri` = '%s' AND `uid` = %d",
+                                               dbesc($when),
+                                               dbesc(datetime_convert()),
+                                               dbesc($uri),
+                                               intval($importer["uid"])
+                                       );
+                               create_tags_from_itemuri($uri, $importer["uid"]);
+                               create_files_from_itemuri($uri, $importer["uid"]);
+                               update_thread_uri($uri, $importer["uid"]);
+                       } else {
+                               $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s',
+                                               `body` = '', `title` = ''
+                                       WHERE `uri` = '%s' AND `uid` = %d",
+                                               dbesc($when),
+                                               dbesc(datetime_convert()),
+                                               dbesc($uri),
+                                               intval($importer["uid"])
+                                       );
+                               create_tags_from_itemuri($uri, $importer["uid"]);
+                               create_files_from_itemuri($uri, $importer["uid"]);
+                               update_thread_uri($uri, $importer["importer_uid"]);
+                               if($item["last-child"]) {
+                                       // ensure that last-child is set in case the comment that had it just got wiped.
+                                       q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d ",
+                                               dbesc(datetime_convert()),
+                                               dbesc($item["parent-uri"]),
+                                               intval($item["uid"])
+                                       );
+                                       // who is the last child now?
+                                       $r = q("SELECT `id` FROM `item` WHERE `parent-uri` = '%s' AND `type` != 'activity' AND `deleted` = 0 AND `moderated` = 0 AND `uid` = %d
+                                               ORDER BY `created` DESC LIMIT 1",
+                                                       dbesc($item["parent-uri"]),
+                                                       intval($importer["uid"])
+                                       );
+                                       if(count($r)) {
+                                               q("UPDATE `item` SET `last-child` = 1 WHERE `id` = %d",
+                                                       intval($r[0]["id"])
+                                               );
+                                       }
+                               }
+                               // if this is a relayed delete, propagate it to other recipients
+
+                               if($entrytype == DFRN_REPLY_RC) {
+                                       logger("Notifying followers about deletion of post ".$item["id"], LOGGER_DEBUG);
+                                       proc_run("php", "include/notifier.php","drop", $item["id"]);
+                               }
+                       }
+               }
+       }
+
+       /**
+        * @brief Imports a DFRN message
+        *
+        * @param text $xml The DFRN message
+        * @param array $importer Record of the importer user mixed with contact of the content
+        * @param bool $sort_by_date Is used when feeds are polled
+        */
+       public static function import($xml,$importer, $sort_by_date = false) {
+
+               if ($xml == "")
+                       return;
+
+               if($importer["readonly"]) {
+                       // We aren't receiving stuff from this person. But we will quietly ignore them
+                       // rather than a blatant "go away" message.
+                       logger('ignoring contact '.$importer["id"]);
+                       return;
+               }
+
+               $doc = new DOMDocument();
+               @$doc->loadXML($xml);
+
+               $xpath = new DomXPath($doc);
+               $xpath->registerNamespace("atom", NAMESPACE_ATOM1);
+               $xpath->registerNamespace("thr", NAMESPACE_THREAD);
+               $xpath->registerNamespace("at", NAMESPACE_TOMB);
+               $xpath->registerNamespace("media", NAMESPACE_MEDIA);
+               $xpath->registerNamespace("dfrn", NAMESPACE_DFRN);
+               $xpath->registerNamespace("activity", NAMESPACE_ACTIVITY);
+               $xpath->registerNamespace("georss", NAMESPACE_GEORSS);
+               $xpath->registerNamespace("poco", NAMESPACE_POCO);
+               $xpath->registerNamespace("ostatus", NAMESPACE_OSTATUS);
+               $xpath->registerNamespace("statusnet", NAMESPACE_STATUSNET);
+
+               $header = array();
+               $header["uid"] = $importer["uid"];
+               $header["network"] = NETWORK_DFRN;
+               $header["type"] = "remote";
+               $header["wall"] = 0;
+               $header["origin"] = 0;
+               $header["contact-id"] = $importer["id"];
+
+               // Update the contact table if the data has changed
+
+               // The "atom:author" is only present in feeds
+               if ($xpath->query("/atom:feed/atom:author")->length > 0)
+                       self::fetchauthor($xpath, $doc->firstChild, $importer, "atom:author", false, $xml);
+
+               // Only the "dfrn:owner" in the head section contains all data
+               if ($xpath->query("/atom:feed/dfrn:owner")->length > 0)
+                       self::fetchauthor($xpath, $doc->firstChild, $importer, "dfrn:owner", false, $xml);
+
+               logger("Import DFRN message for user ".$importer["uid"]." from contact ".$importer["id"], LOGGER_DEBUG);
+
+               // is it a public forum? Private forums aren't supported by now with this method
+               $forum = intval($xpath->evaluate("/atom:feed/dfrn:community/text()", $context)->item(0)->nodeValue);
+
+               if ($forum != $importer["forum"])
+                       q("UPDATE `contact` SET `forum` = %d WHERE `forum` != %d AND `id` = %d",
+                               intval($forum), intval($forum),
+                               intval($importer["id"])
+                       );
+
+               $mails = $xpath->query("/atom:feed/dfrn:mail");
+               foreach ($mails AS $mail)
+                       self::process_mail($xpath, $mail, $importer);
+
+               $suggestions = $xpath->query("/atom:feed/dfrn:suggest");
+               foreach ($suggestions AS $suggestion)
+                       self::process_suggestion($xpath, $suggestion, $importer);
+
+               $relocations = $xpath->query("/atom:feed/dfrn:relocate");
+               foreach ($relocations AS $relocation)
+                       self::process_relocation($xpath, $relocation, $importer);
+
+               $deletions = $xpath->query("/atom:feed/at:deleted-entry");
+               foreach ($deletions AS $deletion)
+                       self::process_deletion($xpath, $deletion, $importer);
+
+               if (!$sort_by_date) {
+                       $entries = $xpath->query("/atom:feed/atom:entry");
+                       foreach ($entries AS $entry)
+                               self::process_entry($header, $xpath, $entry, $importer);
+               } else {
+                       $newentries = array();
+                       $entries = $xpath->query("/atom:feed/atom:entry");
+                       foreach ($entries AS $entry) {
+                               $created = $xpath->query("atom:published/text()", $entry)->item(0)->nodeValue;
+                               $newentries[strtotime($created)] = $entry;
+                       }
+
+                       // Now sort after the publishing date
+                       ksort($newentries);
+
+                       foreach ($newentries AS $entry)
+                               self::process_entry($header, $xpath, $entry, $importer);
+               }
+               logger("Import done for user ".$importer["uid"]." from contact ".$importer["id"], LOGGER_DEBUG);
+       }
 }
+?>