<?php /** * @file include/dfrn.php * @brief The implementation of the dfrn protocol * * @see https://github.com/friendica/friendica/wiki/Protocol and * https://github.com/friendica/friendica/blob/master/spec/dfrn2.pdf */ use Friendica\App; use Friendica\Core\System; 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"); require_once("include/xml.php"); /** * @brief This class contain functions to create and send DFRN XML files * */ 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 * * This function is used whenever content is transmitted via DFRN. * * @param array $items Item elements * @param array $owner Owner record * * @return string DFRN entries * @todo Add type-hints */ public static function entries($items,$owner) { $doc = new DOMDocument('1.0', 'utf-8'); $doc->formatOutput = true; $root = self::add_header($doc, $owner, "dfrn:owner", "", false); if (! count($items)) { return trim($doc->saveXML()); } foreach ($items as $item) { $entry = self::entry($doc, "text", $item, $owner, $item["entry:comment-allow"], $item["entry:cid"]); $root->appendChild($entry); } return(trim($doc->saveXML())); } /** * @brief Generate an atom feed for the given user * * This function is called when another server is pulling data from the user feed. * * @param string $dfrn_id DFRN ID from the requesting party * @param string $owner_nick Owner nick name * @param string $last_update Date of the last update * @param int $direction Can be -1, 0 or 1. * @param boolean $onlyheader Output only the header without content? (Default is "no") * * @return string DFRN feed entries */ public static function feed($dfrn_id, $owner_nick, $last_update, $direction = 0, $onlyheader = false) { $a = get_app(); $sitefeed = ((strlen($owner_nick)) ? false : true); // not yet implemented, need to rewrite huge chunks of following logic $public_feed = (($dfrn_id) ? false : true); $starred = false; // not yet implemented, possible security issues $converse = false; if ($public_feed && $a->argc > 2) { for ($x = 2; $x < $a->argc; $x++) { if ($a->argv[$x] == 'converse') { $converse = true; } if ($a->argv[$x] == 'starred') { $starred = true; } if ($a->argv[$x] == 'category' && $a->argc > ($x + 1) && strlen($a->argv[$x+1])) { $category = $a->argv[$x+1]; } } } // default permissions - anonymous user $sql_extra = " AND `item`.`allow_cid` = '' AND `item`.`allow_gid` = '' AND `item`.`deny_cid` = '' AND `item`.`deny_gid` = '' "; $r = q("SELECT `contact`.*, `user`.`nickname`, `user`.`timezone`, `user`.`page-flags`, `user`.`account-type` FROM `contact` INNER JOIN `user` ON `user`.`uid` = `contact`.`uid` WHERE `contact`.`self` AND `user`.`nickname` = '%s' LIMIT 1", dbesc($owner_nick) ); if (! dbm::is_result($r)) { killme(); } $owner = $r[0]; $owner_id = $owner['uid']; $owner_nick = $owner['nickname']; $sql_post_table = ""; if (! $public_feed) { $sql_extra = ''; switch($direction) { case (-1): $sql_extra = sprintf(" AND `issued-id` = '%s' ", dbesc($dfrn_id)); $my_id = $dfrn_id; break; case 0: $sql_extra = sprintf(" AND `issued-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id)); $my_id = '1:' . $dfrn_id; break; case 1: $sql_extra = sprintf(" AND `dfrn-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id)); $my_id = '0:' . $dfrn_id; break; default: return false; break; // NOTREACHED } $r = q("SELECT * FROM `contact` WHERE NOT `blocked` AND `contact`.`uid` = %d $sql_extra LIMIT 1", intval($owner_id) ); if (! dbm::is_result($r)) { killme(); } $contact = $r[0]; require_once('include/security.php'); $groups = init_groups_visitor($contact['id']); if (count($groups)) { for ($x = 0; $x < count($groups); $x ++) $groups[$x] = '<' . intval($groups[$x]) . '>' ; $gs = implode('|', $groups); } else { $gs = '<<>>' ; // Impossible to match } $sql_extra = sprintf(" AND ( `allow_cid` = '' OR `allow_cid` REGEXP '<%d>' ) AND ( `deny_cid` = '' OR NOT `deny_cid` REGEXP '<%d>' ) AND ( `allow_gid` = '' OR `allow_gid` REGEXP '%s' ) AND ( `deny_gid` = '' OR NOT `deny_gid` REGEXP '%s') ", intval($contact['id']), intval($contact['id']), dbesc($gs), dbesc($gs) ); } if ($public_feed) { $sort = 'DESC'; } else { $sort = 'ASC'; } if (! strlen($last_update)) { $last_update = 'now -30 days'; } if (isset($category)) { $sql_post_table = sprintf("INNER JOIN (SELECT `oid` FROM `term` WHERE `term` = '%s' AND `otype` = %d AND `type` = %d AND `uid` = %d ORDER BY `tid` DESC) AS `term` ON `item`.`id` = `term`.`oid` ", dbesc(protect_sprintf($category)), intval(TERM_OBJ_POST), intval(TERM_CATEGORY), intval($owner_id)); //$sql_extra .= file_tag_file_query('item',$category,'category'); } if ($public_feed) { if (! $converse) { $sql_extra .= " AND `contact`.`self` = 1 "; } } $check_date = datetime_convert('UTC','UTC',$last_update,'Y-m-d H:i:s'); $r = q("SELECT `item`.*, `item`.`id` AS `item_id`, `contact`.`name`, `contact`.`network`, `contact`.`photo`, `contact`.`url`, `contact`.`name-date`, `contact`.`uri-date`, `contact`.`avatar-date`, `contact`.`thumb`, `contact`.`dfrn-id`, `contact`.`self`, `sign`.`signed_text`, `sign`.`signature`, `sign`.`signer` FROM `item` USE INDEX (`uid_wall_changed`) $sql_post_table STRAIGHT_JOIN `contact` ON `contact`.`id` = `item`.`contact-id` AND (NOT `contact`.`blocked` OR `contact`.`pending`) LEFT JOIN `sign` ON `sign`.`iid` = `item`.`id` WHERE `item`.`uid` = %d AND `item`.`visible` AND NOT `item`.`moderated` AND `item`.`parent` != 0 AND `item`.`wall` AND `item`.`changed` > '%s' $sql_extra ORDER BY `item`.`parent` ".$sort.", `item`.`created` ASC LIMIT 0, 300", intval($owner_id), dbesc($check_date), dbesc($sort) ); /* * Will check further below if this actually returned results. * We will provide an empty feed if that is the case. */ $items = $r; $doc = new DOMDocument('1.0', 'utf-8'); $doc->formatOutput = true; $alternatelink = $owner['url']; if (isset($category)) { $alternatelink .= "/category/".$category; } if ($public_feed) { $author = "dfrn:owner"; } else { $author = "author"; } $root = self::add_header($doc, $owner, $author, $alternatelink, true); /// @TODO This hook can't work anymore // call_hooks('atom_feed', $atom); if (!dbm::is_result($items) || $onlyheader) { $atom = trim($doc->saveXML()); call_hooks('atom_feed_end', $atom); return $atom; } foreach ($items as $item) { // prevent private email from leaking. if ($item['network'] == NETWORK_MAIL) { continue; } // public feeds get html, our own nodes use bbcode if ($public_feed) { $type = 'html'; // catch any email that's in a public conversation and make sure it doesn't leak if ($item['private']) { continue; } } else { $type = 'text'; } $entry = self::entry($doc, $type, $item, $owner, true); $root->appendChild($entry); } $atom = trim($doc->saveXML()); call_hooks('atom_feed_end', $atom); return $atom; } /** * @brief Generate an atom entry for a given item id * * @param int $item_id The item id * @param boolean $conversation Show the conversation. If false show the single post. * * @return string DFRN feed entry */ public static function itemFeed($item_id, $conversation = false) { if ($conversation) { $condition = '`item`.`parent`'; } else { $condition = '`item`.`id`'; } $r = q("SELECT `item`.*, `item`.`id` AS `item_id`, `contact`.`name`, `contact`.`network`, `contact`.`photo`, `contact`.`url`, `contact`.`name-date`, `contact`.`uri-date`, `contact`.`avatar-date`, `contact`.`thumb`, `contact`.`dfrn-id`, `contact`.`self`, `sign`.`signed_text`, `sign`.`signature`, `sign`.`signer` FROM `item` STRAIGHT_JOIN `contact` ON `contact`.`id` = `item`.`contact-id` AND (NOT `contact`.`blocked` OR `contact`.`pending`) LEFT JOIN `sign` ON `sign`.`iid` = `item`.`id` WHERE %s = %d AND `item`.`visible` AND NOT `item`.`moderated` AND `item`.`parent` != 0 AND NOT `item`.`private`", $condition, intval($item_id) ); if (!dbm::is_result($r)) { killme(); } $items = $r; $item = $r[0]; $r = q("SELECT `contact`.*, `user`.`nickname`, `user`.`timezone`, `user`.`page-flags`, `user`.`account-type` FROM `contact` INNER JOIN `user` ON `user`.`uid` = `contact`.`uid` WHERE `contact`.`self` AND `user`.`uid` = %d LIMIT 1", intval($item['uid']) ); if (!dbm::is_result($r)) { killme(); } $owner = $r[0]; $doc = new DOMDocument('1.0', 'utf-8'); $doc->formatOutput = true; $type = 'html'; if ($conversation) { $root = $doc->createElementNS(NAMESPACE_ATOM1, 'feed'); $doc->appendChild($root); $root->setAttribute("xmlns:thr", NAMESPACE_THREAD); $root->setAttribute("xmlns:at", NAMESPACE_TOMB); $root->setAttribute("xmlns:media", NAMESPACE_MEDIA); $root->setAttribute("xmlns:dfrn", NAMESPACE_DFRN); $root->setAttribute("xmlns:activity", NAMESPACE_ACTIVITY); $root->setAttribute("xmlns:georss", NAMESPACE_GEORSS); $root->setAttribute("xmlns:poco", NAMESPACE_POCO); $root->setAttribute("xmlns:ostatus", NAMESPACE_OSTATUS); $root->setAttribute("xmlns:statusnet", NAMESPACE_STATUSNET); //$root = self::add_header($doc, $owner, "dfrn:owner", "", false); foreach ($items as $item) { $entry = self::entry($doc, $type, $item, $owner, true, 0); $root->appendChild($entry); } } else { $root = self::entry($doc, $type, $item, $owner, true, 0, true); } $atom = trim($doc->saveXML()); return $atom; } /** * @brief Create XML text for DFRN mails * * @param array $item message elements * @param array $owner Owner record * * @return string DFRN mail * @todo Add type-hints */ public static function mail($item, $owner) { $doc = new DOMDocument('1.0', 'utf-8'); $doc->formatOutput = true; $root = self::add_header($doc, $owner, "dfrn:owner", "", false); $mail = $doc->createElement("dfrn:mail"); $sender = $doc->createElement("dfrn:sender"); xml::add_element($doc, $sender, "dfrn:name", $owner['name']); xml::add_element($doc, $sender, "dfrn:uri", $owner['url']); xml::add_element($doc, $sender, "dfrn:avatar", $owner['thumb']); $mail->appendChild($sender); xml::add_element($doc, $mail, "dfrn:id", $item['uri']); xml::add_element($doc, $mail, "dfrn:in-reply-to", $item['parent-uri']); xml::add_element($doc, $mail, "dfrn:sentdate", datetime_convert('UTC', 'UTC', $item['created'] . '+00:00' , ATOM_TIME)); xml::add_element($doc, $mail, "dfrn:subject", $item['title']); xml::add_element($doc, $mail, "dfrn:content", $item['body']); $root->appendChild($mail); return(trim($doc->saveXML())); } /** * @brief Create XML text for DFRN friend suggestions * * @param array $item suggestion elements * @param array $owner Owner record * * @return string DFRN suggestions * @todo Add type-hints */ public static function fsuggest($item, $owner) { $doc = new DOMDocument('1.0', 'utf-8'); $doc->formatOutput = true; $root = self::add_header($doc, $owner, "dfrn:owner", "", false); $suggest = $doc->createElement("dfrn:suggest"); xml::add_element($doc, $suggest, "dfrn:url", $item['url']); xml::add_element($doc, $suggest, "dfrn:name", $item['name']); xml::add_element($doc, $suggest, "dfrn:photo", $item['photo']); xml::add_element($doc, $suggest, "dfrn:request", $item['request']); xml::add_element($doc, $suggest, "dfrn:note", $item['note']); $root->appendChild($suggest); return(trim($doc->saveXML())); } /** * @brief Create XML text for DFRN relocations * * @param array $owner Owner record * @param int $uid User ID * * @return string DFRN relocations * @todo Add type-hints */ public static function relocate($owner, $uid) { /* get site pubkey. this could be a new installation with no site keys*/ $pubkey = get_config('system','site_pubkey'); if (! $pubkey) { $res = new_keypair(1024); set_config('system','site_prvkey', $res['prvkey']); set_config('system','site_pubkey', $res['pubkey']); } $rp = q("SELECT `resource-id` , `scale`, type FROM `photo` WHERE `profile` = 1 AND `uid` = %d ORDER BY scale;", $uid); $photos = array(); $ext = Photo::supportedTypes(); foreach ($rp as $p) { $photos[$p['scale']] = System::baseUrl().'/photo/'.$p['resource-id'].'-'.$p['scale'].'.'.$ext[$p['type']]; } unset($rp, $ext); $doc = new DOMDocument('1.0', 'utf-8'); $doc->formatOutput = true; $root = self::add_header($doc, $owner, "dfrn:owner", "", false); $relocate = $doc->createElement("dfrn:relocate"); xml::add_element($doc, $relocate, "dfrn:url", $owner['url']); xml::add_element($doc, $relocate, "dfrn:name", $owner['name']); xml::add_element($doc, $relocate, "dfrn:addr", $owner['addr']); xml::add_element($doc, $relocate, "dfrn:avatar", $owner['avatar']); xml::add_element($doc, $relocate, "dfrn:photo", $photos[4]); xml::add_element($doc, $relocate, "dfrn:thumb", $photos[5]); xml::add_element($doc, $relocate, "dfrn:micro", $photos[6]); xml::add_element($doc, $relocate, "dfrn:request", $owner['request']); xml::add_element($doc, $relocate, "dfrn:confirm", $owner['confirm']); xml::add_element($doc, $relocate, "dfrn:notify", $owner['notify']); xml::add_element($doc, $relocate, "dfrn:poll", $owner['poll']); xml::add_element($doc, $relocate, "dfrn:sitepubkey", get_config('system','site_pubkey')); $root->appendChild($relocate); return(trim($doc->saveXML())); } /** * @brief Adds the header elements for the DFRN protocol * * @param object $doc XML document * @param array $owner Owner record * @param string $authorelement Element name for the author * @param string $alternatelink link to profile or category * @param bool $public Is it a header for public posts? * * @return object XML root object * @todo Add type-hints */ private static function add_header($doc, $owner, $authorelement, $alternatelink = "", $public = false) { if ($alternatelink == "") { $alternatelink = $owner['url']; } $root = $doc->createElementNS(NAMESPACE_ATOM1, 'feed'); $doc->appendChild($root); $root->setAttribute("xmlns:thr", NAMESPACE_THREAD); $root->setAttribute("xmlns:at", NAMESPACE_TOMB); $root->setAttribute("xmlns:media", NAMESPACE_MEDIA); $root->setAttribute("xmlns:dfrn", NAMESPACE_DFRN); $root->setAttribute("xmlns:activity", NAMESPACE_ACTIVITY); $root->setAttribute("xmlns:georss", NAMESPACE_GEORSS); $root->setAttribute("xmlns:poco", NAMESPACE_POCO); $root->setAttribute("xmlns:ostatus", NAMESPACE_OSTATUS); $root->setAttribute("xmlns:statusnet", NAMESPACE_STATUSNET); xml::add_element($doc, $root, "id", System::baseUrl()."/profile/".$owner["nick"]); xml::add_element($doc, $root, "title", $owner["name"]); $attributes = array("uri" => "https://friendi.ca", "version" => FRIENDICA_VERSION."-".DB_UPDATE_VERSION); xml::add_element($doc, $root, "generator", FRIENDICA_PLATFORM, $attributes); $attributes = array("rel" => "license", "href" => "http://creativecommons.org/licenses/by/3.0/"); xml::add_element($doc, $root, "link", "", $attributes); $attributes = array("rel" => "alternate", "type" => "text/html", "href" => $alternatelink); xml::add_element($doc, $root, "link", "", $attributes); if ($public) { // DFRN itself doesn't uses this. But maybe someone else wants to subscribe to the public feed. ostatus::hublinks($doc, $root, $owner["nick"]); $attributes = array("rel" => "salmon", "href" => System::baseUrl()."/salmon/".$owner["nick"]); xml::add_element($doc, $root, "link", "", $attributes); $attributes = array("rel" => "http://salmon-protocol.org/ns/salmon-replies", "href" => System::baseUrl()."/salmon/".$owner["nick"]); xml::add_element($doc, $root, "link", "", $attributes); $attributes = array("rel" => "http://salmon-protocol.org/ns/salmon-mention", "href" => System::baseUrl()."/salmon/".$owner["nick"]); xml::add_element($doc, $root, "link", "", $attributes); } // For backward compatibility we keep this element if ($owner['page-flags'] == PAGE_COMMUNITY) { xml::add_element($doc, $root, "dfrn:community", 1); } // The former element is replaced by this one xml::add_element($doc, $root, "dfrn:account_type", $owner["account-type"]); /// @todo We need a way to transmit the different page flags like "PAGE_PRVGROUP" xml::add_element($doc, $root, "updated", datetime_convert("UTC", "UTC", "now", ATOM_TIME)); $author = self::add_author($doc, $owner, $authorelement, $public); $root->appendChild($author); return $root; } /** * @brief Adds the author element in the header for the DFRN protocol * * @param object $doc XML document * @param array $owner Owner record * @param string $authorelement Element name for the author * * @return object XML author object * @todo Add type-hints */ private static function add_author($doc, $owner, $authorelement, $public) { // Is the profile hidden or shouldn't be published in the net? Then add the "hide" element $r = q("SELECT `id` FROM `profile` INNER JOIN `user` ON `user`.`uid` = `profile`.`uid` WHERE (`hidewall` OR NOT `net-publish`) AND `user`.`uid` = %d", intval($owner['uid'])); if (dbm::is_result($r)) { $hidewall = true; } else { $hidewall = false; } $author = $doc->createElement($authorelement); $namdate = datetime_convert('UTC', 'UTC', $owner['name-date'].'+00:00', ATOM_TIME); $uridate = datetime_convert('UTC', 'UTC', $owner['uri-date'].'+00:00', ATOM_TIME); $picdate = datetime_convert('UTC', 'UTC', $owner['avatar-date'].'+00:00', ATOM_TIME); $attributes = array(); if (!$public || !$hidewall) { $attributes = array("dfrn:updated" => $namdate); } xml::add_element($doc, $author, "name", $owner["name"], $attributes); xml::add_element($doc, $author, "uri", System::baseUrl().'/profile/'.$owner["nickname"], $attributes); xml::add_element($doc, $author, "dfrn:handle", $owner["addr"], $attributes); $attributes = array("rel" => "photo", "type" => "image/jpeg", "media:width" => 175, "media:height" => 175, "href" => $owner['photo']); if (!$public || !$hidewall) { $attributes["dfrn:updated"] = $picdate; } xml::add_element($doc, $author, "link", "", $attributes); $attributes["rel"] = "avatar"; xml::add_element($doc, $author, "link", "", $attributes); if ($hidewall) { xml::add_element($doc, $author, "dfrn:hide", "true"); } // The following fields will only be generated if the data isn't meant for a public feed if ($public) { return $author; } $birthday = feed_birthday($owner['uid'], $owner['timezone']); if ($birthday) xml::add_element($doc, $author, "dfrn:birthday", $birthday); // Only show contact details when we are allowed to $r = q("SELECT `profile`.`about`, `profile`.`name`, `profile`.`homepage`, `user`.`nickname`, `user`.`timezone`, `profile`.`locality`, `profile`.`region`, `profile`.`country-name`, `profile`.`pub_keywords`, `profile`.`xmpp`, `profile`.`dob` FROM `profile` INNER JOIN `user` ON `user`.`uid` = `profile`.`uid` WHERE `profile`.`is-default` AND NOT `user`.`hidewall` AND `user`.`uid` = %d", intval($owner['uid'])); if (dbm::is_result($r)) { $profile = $r[0]; xml::add_element($doc, $author, "poco:displayName", $profile["name"]); xml::add_element($doc, $author, "poco:updated", $namdate); if (trim($profile["dob"]) > '0001-01-01') { xml::add_element($doc, $author, "poco:birthday", "0000-".date("m-d", strtotime($profile["dob"]))); } xml::add_element($doc, $author, "poco:note", $profile["about"]); xml::add_element($doc, $author, "poco:preferredUsername", $profile["nickname"]); $savetz = date_default_timezone_get(); date_default_timezone_set($profile["timezone"]); xml::add_element($doc, $author, "poco:utcOffset", date("P")); date_default_timezone_set($savetz); if (trim($profile["homepage"]) != "") { $urls = $doc->createElement("poco:urls"); xml::add_element($doc, $urls, "poco:type", "homepage"); xml::add_element($doc, $urls, "poco:value", $profile["homepage"]); xml::add_element($doc, $urls, "poco:primary", "true"); $author->appendChild($urls); } if (trim($profile["pub_keywords"]) != "") { $keywords = explode(",", $profile["pub_keywords"]); foreach ($keywords AS $keyword) { xml::add_element($doc, $author, "poco:tags", trim($keyword)); } } if (trim($profile["xmpp"]) != "") { $ims = $doc->createElement("poco:ims"); xml::add_element($doc, $ims, "poco:type", "xmpp"); xml::add_element($doc, $ims, "poco:value", $profile["xmpp"]); xml::add_element($doc, $ims, "poco:primary", "true"); $author->appendChild($ims); } if (trim($profile["locality"].$profile["region"].$profile["country-name"]) != "") { $element = $doc->createElement("poco:address"); xml::add_element($doc, $element, "poco:formatted", formatted_location($profile)); if (trim($profile["locality"]) != "") { xml::add_element($doc, $element, "poco:locality", $profile["locality"]); } if (trim($profile["region"]) != "") { xml::add_element($doc, $element, "poco:region", $profile["region"]); } if (trim($profile["country-name"]) != "") { xml::add_element($doc, $element, "poco:country", $profile["country-name"]); } $author->appendChild($element); } } return $author; } /** * @brief Adds the author elements in the "entry" elements of the DFRN protocol * * @param object $doc XML document * @param string $element Element name for the author * @param string $contact_url Link of the contact * @param array $items Item elements * * @return object XML author object * @todo Add type-hints */ private static function add_entry_author($doc, $element, $contact_url, $item) { $contact = get_contact_details_by_url($contact_url, $item["uid"]); $author = $doc->createElement($element); xml::add_element($doc, $author, "name", $contact["name"]); xml::add_element($doc, $author, "uri", $contact["url"]); xml::add_element($doc, $author, "dfrn:handle", $contact["addr"]); /// @Todo /// - Check real image type and image size /// - Check which of these boths elements we should use $attributes = array( "rel" => "photo", "type" => "image/jpeg", "media:width" => 80, "media:height" => 80, "href" => $contact["photo"]); xml::add_element($doc, $author, "link", "", $attributes); $attributes = array( "rel" => "avatar", "type" => "image/jpeg", "media:width" => 80, "media:height" => 80, "href" => $contact["photo"]); xml::add_element($doc, $author, "link", "", $attributes); return $author; } /** * @brief Adds the activity elements * * @param object $doc XML document * @param string $element Element name for the activity * @param string $activity activity value * * @return object XML activity object * @todo Add type-hints */ private static function create_activity($doc, $element, $activity) { if ($activity) { $entry = $doc->createElement($element); $r = parse_xml_string($activity, false); if (!$r) { return false; } if ($r->type) { xml::add_element($doc, $entry, "activity:object-type", $r->type); } if ($r->id) { xml::add_element($doc, $entry, "id", $r->id); } if ($r->title) { xml::add_element($doc, $entry, "title", $r->title); } if ($r->link) { if (substr($r->link, 0, 1) == '<') { if (strstr($r->link, '&') && (! strstr($r->link, '&'))) { $r->link = str_replace('&', '&', $r->link); } $r->link = preg_replace('/\<link(.*?)\"\>/', '<link$1"/>', $r->link); // 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", "", $attributes); } } if ($r->content) { xml::add_element($doc, $entry, "content", bbcode($r->content), array("type" => "html")); } return $entry; } return false; } /** * @brief Adds the elements for attachments * * @param object $doc XML document * @param object $root XML root * @param array $item Item element * * @return object XML attachment object * @todo Add type-hints */ private static function get_attachment($doc, $root, $item) { $arr = explode('[/attach],',$item['attach']); if (count($arr)) { foreach ($arr as $r) { $matches = false; $cnt = preg_match('|\[attach\]href=\"(.*?)\" length=\"(.*?)\" type=\"(.*?)\" title=\"(.*?)\"|',$r,$matches); if ($cnt) { $attributes = array("rel" => "enclosure", "href" => $matches[1], "type" => $matches[3]); if (intval($matches[2])) { $attributes["length"] = intval($matches[2]); } if (trim($matches[4]) != "") { $attributes["title"] = trim($matches[4]); } xml::add_element($doc, $root, "link", "", $attributes); } } } } /** * @brief Adds the "entry" elements for the DFRN protocol * * @param object $doc XML document * @param string $type "text" or "html" * @param array $item Item element * @param array $owner Owner record * @param bool $comment Trigger the sending of the "comment" element * @param int $cid Contact ID of the recipient * @param bool $single If set, the entry is created as an XML document with a single "entry" element * * @return object XML entry object * @todo Add type-hints */ private static function entry($doc, $type, $item, $owner, $comment = false, $cid = 0, $single = false) { $mentioned = array(); if (!$item['parent']) { return; } if ($item['deleted']) { $attributes = array("ref" => $item['uri'], "when" => datetime_convert('UTC','UTC',$item['edited'] . '+00:00',ATOM_TIME)); return xml::create_element($doc, "at:deleted-entry", "", $attributes); } if (!$single) { $entry = $doc->createElement("entry"); } else { $entry = $doc->createElementNS(NAMESPACE_ATOM1, 'entry'); $doc->appendChild($entry); $entry->setAttribute("xmlns:thr", NAMESPACE_THREAD); $entry->setAttribute("xmlns:at", NAMESPACE_TOMB); $entry->setAttribute("xmlns:media", NAMESPACE_MEDIA); $entry->setAttribute("xmlns:dfrn", NAMESPACE_DFRN); $entry->setAttribute("xmlns:activity", NAMESPACE_ACTIVITY); $entry->setAttribute("xmlns:georss", NAMESPACE_GEORSS); $entry->setAttribute("xmlns:poco", NAMESPACE_POCO); $entry->setAttribute("xmlns:ostatus", NAMESPACE_OSTATUS); $entry->setAttribute("xmlns:statusnet", NAMESPACE_STATUSNET); } if ($item['allow_cid'] || $item['allow_gid'] || $item['deny_cid'] || $item['deny_gid']) { $body = fix_private_photos($item['body'],$owner['uid'],$item,$cid); } else { $body = $item['body']; } // Remove the abstract element. It is only locally important. $body = remove_abstract($body); if ($type == 'html') { $htmlbody = $body; if ($item['title'] != "") { $htmlbody = "[b]".$item['title']."[/b]\n\n".$htmlbody; } $htmlbody = bbcode($htmlbody, false, false, 7); } $author = self::add_entry_author($doc, "author", $item["author-link"], $item); $entry->appendChild($author); $dfrnowner = self::add_entry_author($doc, "dfrn:owner", $item["owner-link"], $item); $entry->appendChild($dfrnowner); if (($item['parent'] != $item['id']) || ($item['parent-uri'] !== $item['uri']) || (($item['thr-parent'] !== '') && ($item['thr-parent'] !== $item['uri']))) { $parent_item = (($item['thr-parent']) ? $item['thr-parent'] : $item['parent-uri']); $parent = q("SELECT `guid`,`plink` FROM `item` WHERE `uri` = '%s' AND `uid` = %d", dbesc($parent_item), intval($item['uid'])); $attributes = array("ref" => $parent_item, "type" => "text/html", "href" => $parent[0]['plink'], "dfrn:diaspora_guid" => $parent[0]['guid']); xml::add_element($doc, $entry, "thr:in-reply-to", "", $attributes); } // Add conversation data. This is used for OStatus $conversation_href = System::baseUrl()."/display/".$owner["nick"]."/".$item["parent"]; $conversation_uri = $conversation_href; if (isset($parent_item)) { $r = dba::fetch_first("SELECT `conversation-uri`, `conversation-href` FROM `conversation` WHERE `item-uri` = ?", $item['parent-uri']); if (dbm::is_result($r)) { if ($r['conversation-uri'] != '') { $conversation_uri = $r['conversation-uri']; } if ($r['conversation-href'] != '') { $conversation_href = $r['conversation-href']; } } } $attributes = array( "href" => $conversation_href, "ref" => $conversation_uri); xml::add_element($doc, $entry, "ostatus:conversation", $conversation_uri, $attributes); xml::add_element($doc, $entry, "id", $item["uri"]); xml::add_element($doc, $entry, "title", $item["title"]); xml::add_element($doc, $entry, "published", datetime_convert("UTC","UTC",$item["created"]."+00:00",ATOM_TIME)); xml::add_element($doc, $entry, "updated", datetime_convert("UTC","UTC",$item["edited"]."+00:00",ATOM_TIME)); // "dfrn:env" is used to read the content xml::add_element($doc, $entry, "dfrn:env", base64url_encode($body, true)); // The "content" field is not read by the receiver. We could remove it when the type is "text" // We keep it at the moment, maybe there is some old version that doesn't read "dfrn:env" xml::add_element($doc, $entry, "content", (($type == 'html') ? $htmlbody : $body), array("type" => $type)); // We save this value in "plink". Maybe we should read it from there as well? xml::add_element($doc, $entry, "link", "", array("rel" => "alternate", "type" => "text/html", "href" => System::baseUrl()."/display/".$item["guid"])); // "comment-allow" is some old fashioned stuff for old Friendica versions. // It is included in the rewritten code for completeness if ($comment) { xml::add_element($doc, $entry, "dfrn:comment-allow", intval($item['last-child'])); } if ($item['location']) { xml::add_element($doc, $entry, "dfrn:location", $item['location']); } if ($item['coord']) { xml::add_element($doc, $entry, "georss:point", $item['coord']); } if (($item['private']) || strlen($item['allow_cid']) || strlen($item['allow_gid']) || strlen($item['deny_cid']) || strlen($item['deny_gid'])) { xml::add_element($doc, $entry, "dfrn:private", (($item['private']) ? $item['private'] : 1)); } if ($item['extid']) { xml::add_element($doc, $entry, "dfrn:extid", $item['extid']); } if ($item['bookmark']) { xml::add_element($doc, $entry, "dfrn:bookmark", "true"); } if ($item['app']) { xml::add_element($doc, $entry, "statusnet:notice_info", "", array("local_id" => $item['id'], "source" => $item['app'])); } xml::add_element($doc, $entry, "dfrn:diaspora_guid", $item["guid"]); // The signed text contains the content in Markdown, the sender handle and the signatur for the content // It is needed for relayed comments to Diaspora. if ($item['signed_text']) { $sign = base64_encode(json_encode(array('signed_text' => $item['signed_text'],'signature' => $item['signature'],'signer' => $item['signer']))); xml::add_element($doc, $entry, "dfrn:diaspora_signature", $sign); } xml::add_element($doc, $entry, "activity:verb", construct_verb($item)); if ($item['object-type'] != "") { xml::add_element($doc, $entry, "activity:object-type", $item['object-type']); } elseif ($item['id'] == $item['parent']) { xml::add_element($doc, $entry, "activity:object-type", ACTIVITY_OBJ_NOTE); } else { xml::add_element($doc, $entry, "activity:object-type", ACTIVITY_OBJ_COMMENT); } $actobj = self::create_activity($doc, "activity:object", $item['object']); if ($actobj) { $entry->appendChild($actobj); } $actarg = self::create_activity($doc, "activity:target", $item['target']); if ($actarg) { $entry->appendChild($actarg); } $tags = item_getfeedtags($item); if (count($tags)) { foreach ($tags as $t) { if (($type != 'html') || ($t[0] != "@")) { xml::add_element($doc, $entry, "category", "", array("scheme" => "X-DFRN:".$t[0].":".$t[1], "term" => $t[2])); } } } if (count($tags)) { foreach ($tags as $t) { if ($t[0] == "@") { $mentioned[$t[1]] = $t[1]; } } } foreach ($mentioned AS $mention) { $r = q("SELECT `forum`, `prv` FROM `contact` WHERE `uid` = %d AND `nurl` = '%s'", intval($owner["uid"]), dbesc(normalise_link($mention))); if (dbm::is_result($r) && ($r[0]["forum"] || $r[0]["prv"])) { xml::add_element($doc, $entry, "link", "", array("rel" => "mentioned", "ostatus:object-type" => ACTIVITY_OBJ_GROUP, "href" => $mention)); } else { xml::add_element($doc, $entry, "link", "", array("rel" => "mentioned", "ostatus:object-type" => ACTIVITY_OBJ_PERSON, "href" => $mention)); } } self::get_attachment($doc, $entry, $item); return $entry; } /** * @brief encrypts data via AES * * @param string $data The data that is to be encrypted * @param string $key The AES key * * @return string encrypted data */ private static function aes_encrypt($data, $key) { return openssl_encrypt($data, 'aes-128-ecb', $key, OPENSSL_RAW_DATA); } /** * @brief decrypts data via AES * * @param string $encrypted The encrypted data * @param string $key The AES key * * @return string decrypted data */ public static function aes_decrypt($encrypted, $key) { return openssl_decrypt($encrypted, 'aes-128-ecb', $key, OPENSSL_RAW_DATA); } /** * @brief Delivers the atom content to the contacts * * @param array $owner Owner record * @param array $contactr Contact record of the receiver * @param string $atom Content that will be transmitted * @param bool $dissolve (to be documented) * * @return int Deliver status. -1 means an error. * @todo Add array type-hint for $owner, $contact */ public static function deliver($owner,$contact,$atom, $dissolve = false) { $a = get_app(); $idtosend = $orig_id = (($contact['dfrn-id']) ? $contact['dfrn-id'] : $contact['issued-id']); if ($contact['duplex'] && $contact['dfrn-id']) { $idtosend = '0:' . $orig_id; } if ($contact['duplex'] && $contact['issued-id']) { $idtosend = '1:' . $orig_id; } $rino = get_config('system', 'rino_encrypt'); $rino = intval($rino); logger("Local rino version: ". $rino, LOGGER_DEBUG); $ssl_val = intval(get_config('system','ssl_policy')); $ssl_policy = ''; switch ($ssl_val) { case SSL_POLICY_FULL: $ssl_policy = 'full'; break; case SSL_POLICY_SELFSIGN: $ssl_policy = 'self'; break; case SSL_POLICY_NONE: default: $ssl_policy = 'none'; break; } $url = $contact['notify'] . '&dfrn_id=' . $idtosend . '&dfrn_version=' . DFRN_PROTOCOL_VERSION . (($rino) ? '&rino='.$rino : ''); logger('dfrn_deliver: ' . $url); $ret = z_fetch_url($url); if ($ret['errno'] == CURLE_OPERATION_TIMEDOUT) { return -2; // timed out } $xml = $ret['body']; $curl_stat = $a->get_curl_code(); if (!$curl_stat) { return -3; // timed out } logger('dfrn_deliver: ' . $xml, LOGGER_DATA); if (! $xml) { return 3; } if (strpos($xml,'<?xml') === false) { logger('dfrn_deliver: no valid XML returned'); logger('dfrn_deliver: returned XML: ' . $xml, LOGGER_DATA); return 3; } $res = parse_xml_string($xml); if ((intval($res->status) != 0) || (! strlen($res->challenge)) || (! strlen($res->dfrn_id))) { return (($res->status) ? $res->status : 3); } $postvars = array(); $sent_dfrn_id = hex2bin((string) $res->dfrn_id); $challenge = hex2bin((string) $res->challenge); $perm = (($res->perm) ? $res->perm : null); $dfrn_version = (float) (($res->dfrn_version) ? $res->dfrn_version : 2.0); $rino_remote_version = intval($res->rino); $page = (($owner['page-flags'] == PAGE_COMMUNITY) ? 1 : 0); logger("Remote rino version: ".$rino_remote_version." for ".$contact["url"], LOGGER_DEBUG); if ($owner['page-flags'] == PAGE_PRVGROUP) { $page = 2; } $final_dfrn_id = ''; if ($perm) { if ((($perm == 'rw') && (! intval($contact['writable']))) || (($perm == 'r') && (intval($contact['writable'])))) { q("update contact set writable = %d where id = %d", intval(($perm == 'rw') ? 1 : 0), intval($contact['id']) ); $contact['writable'] = (string) 1 - intval($contact['writable']); } } if (($contact['duplex'] && strlen($contact['pubkey'])) || ($owner['page-flags'] == PAGE_COMMUNITY && strlen($contact['pubkey'])) || ($contact['rel'] == CONTACT_IS_SHARING && strlen($contact['pubkey']))) { openssl_public_decrypt($sent_dfrn_id,$final_dfrn_id,$contact['pubkey']); openssl_public_decrypt($challenge,$postvars['challenge'],$contact['pubkey']); } else { openssl_private_decrypt($sent_dfrn_id,$final_dfrn_id,$contact['prvkey']); openssl_private_decrypt($challenge,$postvars['challenge'],$contact['prvkey']); } $final_dfrn_id = substr($final_dfrn_id, 0, strpos($final_dfrn_id, '.')); if (strpos($final_dfrn_id,':') == 1) { $final_dfrn_id = substr($final_dfrn_id,2); } if ($final_dfrn_id != $orig_id) { logger('dfrn_deliver: wrong dfrn_id.'); // did not decode properly - cannot trust this site return 3; } $postvars['dfrn_id'] = $idtosend; $postvars['dfrn_version'] = DFRN_PROTOCOL_VERSION; if ($dissolve) { $postvars['dissolve'] = '1'; } if ((($contact['rel']) && ($contact['rel'] != CONTACT_IS_SHARING) && (! $contact['blocked'])) || ($owner['page-flags'] == PAGE_COMMUNITY)) { $postvars['data'] = $atom; $postvars['perm'] = 'rw'; } else { $postvars['data'] = str_replace('<dfrn:comment-allow>1','<dfrn:comment-allow>0',$atom); $postvars['perm'] = 'r'; } $postvars['ssl_policy'] = $ssl_policy; if ($page) { $postvars['page'] = $page; } if ($rino > 0 && $rino_remote_version > 0 && (! $dissolve)) { logger('rino version: '. $rino_remote_version); switch ($rino_remote_version) { case 1: // Deprecated rino version! $key = openssl_random_pseudo_bytes(16); $data = self::aes_encrypt($postvars['data'], $key); break; case 2: // RINO 2 based on php-encryption try { $key = Crypto::createNewRandomKey(); } catch (CryptoTestFailed $ex) { logger('Cannot safely create a key'); return -4; } catch (CannotPerformOperation $ex) { logger('Cannot safely create a key'); return -5; } try { $data = Crypto::encrypt($postvars['data'], $key); } catch (CryptoTestFailed $ex) { logger('Cannot safely perform encryption'); return -6; } catch (CannotPerformOperation $ex) { logger('Cannot safely perform encryption'); return -7; } break; default: logger("rino: invalid requested verision '$rino_remote_version'"); return -8; } $postvars['rino'] = $rino_remote_version; $postvars['data'] = bin2hex($data); //logger('rino: sent key = ' . $key, LOGGER_DEBUG); if ($dfrn_version >= 2.1) { if (($contact['duplex'] && strlen($contact['pubkey'])) || ($owner['page-flags'] == PAGE_COMMUNITY && strlen($contact['pubkey'])) || ($contact['rel'] == CONTACT_IS_SHARING && strlen($contact['pubkey']))) { openssl_public_encrypt($key,$postvars['key'],$contact['pubkey']); } else { openssl_private_encrypt($key,$postvars['key'],$contact['prvkey']); } } else { if (($contact['duplex'] && strlen($contact['prvkey'])) || ($owner['page-flags'] == PAGE_COMMUNITY)) { openssl_private_encrypt($key,$postvars['key'],$contact['prvkey']); } else { openssl_public_encrypt($key,$postvars['key'],$contact['pubkey']); } } logger('md5 rawkey ' . md5($postvars['key'])); $postvars['key'] = bin2hex($postvars['key']); } logger('dfrn_deliver: ' . "SENDING: " . print_r($postvars,true), LOGGER_DATA); $xml = post_url($contact['notify'], $postvars); logger('dfrn_deliver: ' . "RECEIVED: " . $xml, LOGGER_DATA); $curl_stat = $a->get_curl_code(); if ((!$curl_stat) || (!strlen($xml))) { return -9; // timed out } if (($curl_stat == 503) && (stristr($a->get_curl_headers(),'retry-after'))) { return -10; } if (strpos($xml,'<?xml') === false) { logger('dfrn_deliver: phase 2: no valid XML returned'); logger('dfrn_deliver: phase 2: returned XML: ' . $xml, LOGGER_DATA); return 3; } if ($contact['term-date'] > NULL_DATE) { logger("dfrn_deliver: $url back from the dead - removing mark for death"); require_once('include/Contact.php'); unmark_for_death($contact); } $res = parse_xml_string($xml); if (!isset($res->status)) { return -11; } if (!empty($res->message)) { logger('Delivery returned status '.$res->status.' - '.$res->message, LOGGER_DEBUG); } return intval($res->status); } /** * @brief Add new birthday event for this person * * @param array $contact Contact record * @param string $birthday Birthday of the contact * @todo Add array type-hint for $contact */ private static function birthday_event($contact, $birthday) { // Check for duplicates $r = q("SELECT `id` FROM `event` WHERE `uid` = %d AND `cid` = %d AND `start` = '%s' AND `type` = '%s' LIMIT 1", intval($contact["uid"]), intval($contact["id"]), dbesc(datetime_convert("UTC","UTC", $birthday)), dbesc("birthday")); if (dbm::is_result($r)) { return; } 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 $onlyfetch Should the data only be fetched or should it update the contact record as well * * @return Returns an array with relevant data of the author * @todo Find good type-hints for all parameter */ private static function fetchauthor($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; $r = q("SELECT `id`, `uid`, `url`, `network`, `avatar-date`, `name-date`, `uri-date`, `addr`, `name`, `nick`, `about`, `location`, `keywords`, `xmpp`, `bdyear`, `bd`, `hidden`, `contact-type` FROM `contact` WHERE `uid` = %d AND `nurl` = '%s' AND `network` != '%s'", intval($importer["uid"]), dbesc(normalise_link($author["link"])), dbesc(NETWORK_STATUSNET)); if (dbm::is_result($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 $attributes) { /// @TODO Rewrite these similar if () to one switch if ($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) && ($href != "")) { $avatarlist[$width] = $href; } } if (count($avatarlist) > 0) { krsort($avatarlist); $author["avatar"] = current($avatarlist); } if (dbm::is_result($r) && !$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 Only search for elements with "poco:type" = "xmpp" $value = $xpath->evaluate($element . "/poco:ims/poco:value/text()", $context)->item(0)->nodeValue; if ($value != "") { $poco["xmpp"] = $value; } /// @todo Add support for the following fields that we don't support by now in the contact table: /// - poco:utcOffset /// - poco:urls /// - poco:locality /// - poco:region /// - poco:country // If the "hide" element is present then the profile isn't searchable. $hide = intval($xpath->evaluate($element . "/dfrn:hide/text()", $context)->item(0)->nodeValue == "true"); logger("Hidden status for contact " . $contact["url"] . ": " . $hide, LOGGER_DEBUG); // If the contact isn't searchable then set the contact to "hidden". // Problem: This can be manually overridden by the user. if ($hide) { $contact["hidden"] = true; } // 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", "0001-01-01"))) { $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 . "'. New value: '" . $contact[$field] . "', old 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 . "'. New value: '" . $contact[$field] . "', old value '" . $r[0][$field] . "'", LOGGER_DEBUG); $update = true; } } if ($update) { logger("Update contact data for contact " . $contact["id"] . " (" . $contact["nick"] . ")", LOGGER_DEBUG); q("UPDATE `contact` SET `name` = '%s', `nick` = '%s', `about` = '%s', `location` = '%s', `addr` = '%s', `keywords` = '%s', `bdyear` = '%s', `bd` = '%s', `hidden` = %d, `xmpp` = '%s', `name-date` = '%s', `uri-date` = '%s' WHERE `id` = %d AND `network` = '%s'", dbesc($contact["name"]), dbesc($contact["nick"]), dbesc($contact["about"]), dbesc($contact["location"]), dbesc($contact["addr"]), dbesc($contact["keywords"]), dbesc($contact["bdyear"]), dbesc($contact["bd"]), intval($contact["hidden"]), dbesc($contact["xmpp"]), dbesc(dbm::date($contact["name-date"])), dbesc(dbm::date($contact["uri-date"])), intval($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"]; $poco["hide"] = $hide; $poco["contact-type"] = $contact["contact-type"]; $gcid = update_gcontact($poco); link_gcontact($gcid, $importer["uid"], $contact["id"]); } return($author); } /** * @brief Transforms activity objects into an XML string * * @param object $xpath XPath object * @param object $activity Activity object * @param text $element element name * * @return string XML string * @todo Find good type-hints for all parameter */ private static function transform_activity($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 $importer Record of the importer user mixed with contact of the content * @todo Find good type-hints for all parameter */ private static function process_mail($xpath, $mail, $importer) { logger("Processing mails"); /// @TODO Rewrite this to one statement $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; dba::insert('mail', $msg); // send notifications. /// @TODO Arange this mess $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 $importer Record of the importer user mixed with contact of the content * @todo Find good type-hints for all parameter */ private static function process_suggestion($xpath, $suggestion, $importer) { $a = get_app(); logger("Processing suggestions"); /// @TODO Rewrite this to one statement $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"]) ); /* * The valid result means the friend we're about to send a friend * suggestion already has them in their contact, which means no further * action is required. * * @see https://github.com/friendica/friendica/pull/3254#discussion_r107315246 */ if (dbm::is_result($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 (dbm::is_result($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($fid) ); /* * The valid result means the friend we're about to send a friend * suggestion already has them in their contact, which means no further * action is required. * * @see https://github.com/friendica/friendica/pull/3254#discussion_r107315246 */ if (dbm::is_result($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 no record in fcontact is found, below INSERT statement will not * link an introduction to it. */ if (!dbm::is_result($r)) { // database record did not get created. Quietly give up. killme(); } $fid = $r[0]["id"]; $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" => System::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 $importer Record of the importer user mixed with contact of the content * @todo Find good type-hints for all parameter */ private static function process_relocation($xpath, $relocation, $importer) { logger("Processing relocations"); /// @TODO Rewrite this to one statement $relocate = array(); $relocate["uid"] = $importer["importer_uid"]; $relocate["cid"] = $importer["id"]; $relocate["url"] = $xpath->query("dfrn:url/text()", $relocation)->item(0)->nodeValue; $relocate["addr"] = $xpath->query("dfrn:addr/text()", $relocation)->item(0)->nodeValue; $relocate["name"] = $xpath->query("dfrn:name/text()", $relocation)->item(0)->nodeValue; $relocate["avatar"] = $xpath->query("dfrn:avatar/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()", $relocation)->item(0)->nodeValue; if (($relocate["avatar"] == "") && ($relocate["photo"] != "")) { $relocate["avatar"] = $relocate["photo"]; } if ($relocate["addr"] == "") { $relocate["addr"] = preg_replace("=(https?://)(.*)/profile/(.*)=ism", "$3@$2", $relocate["url"]); } // update contact $r = q("SELECT `photo`, `url` FROM `contact` WHERE `id` = %d AND `uid` = %d;", intval($importer["id"]), intval($importer["importer_uid"])); if (!dbm::is_result($r)) { logger("Query failed to execute, no result returned in " . __FUNCTION__); return false; } $old = $r[0]; // Update the gcontact entry $relocate["server_url"] = preg_replace("=(https?://)(.*)/profile/(.*)=ism", "$1$2", $relocate["url"]); $x = q("UPDATE `gcontact` SET `name` = '%s', `photo` = '%s', `url` = '%s', `nurl` = '%s', `addr` = '%s', `connect` = '%s', `notify` = '%s', `server_url` = '%s' WHERE `nurl` = '%s';", dbesc($relocate["name"]), dbesc($relocate["avatar"]), dbesc($relocate["url"]), dbesc(normalise_link($relocate["url"])), dbesc($relocate["addr"]), dbesc($relocate["addr"]), dbesc($relocate["notify"]), dbesc($relocate["server_url"]), dbesc(normalise_link($old["url"]))); // Update the contact table. We try to find every entry. $x = q("UPDATE `contact` SET `name` = '%s', `avatar` = '%s', `url` = '%s', `nurl` = '%s', `addr` = '%s', `request` = '%s', `confirm` = '%s', `notify` = '%s', `poll` = '%s', `site-pubkey` = '%s' WHERE (`id` = %d AND `uid` = %d) OR (`nurl` = '%s');", dbesc($relocate["name"]), dbesc($relocate["avatar"]), dbesc($relocate["url"]), dbesc(normalise_link($relocate["url"])), dbesc($relocate["addr"]), dbesc($relocate["request"]), dbesc($relocate["confirm"]), dbesc($relocate["notify"]), dbesc($relocate["poll"]), dbesc($relocate["sitepubkey"]), intval($importer["id"]), intval($importer["importer_uid"]), dbesc(normalise_link($old["url"]))); update_contact_avatar($relocate["avatar"], $importer["importer_uid"], $importer["id"], true); if ($x === false) { return false; } // update items /// @todo This is an extreme performance killer $fields = array( 'owner-link' => array($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) { $r = q("SELECT `id` FROM `item` WHERE `%s` = '%s' AND `uid` = %d LIMIT 1", $n, dbesc($f[0]), intval($importer["importer_uid"])); if (dbm::is_result($r)) { $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 $entrytype Is it a toplevel entry, a comment or a relayed comment? * @todo set proper type-hints (array?) */ private static function update_content($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; } $fields = array('title' => $item["title"], 'body' => $item["body"], 'tag' => $item["tag"], 'changed' => datetime_convert(), 'edited' => datetime_convert("UTC", "UTC", $item["edited"])); $condition = array("`uri` = ? AND `uid` IN (0, ?)", $item["uri"], $importer["importer_uid"]); dba::update('item', $fields, $condition); create_tags_from_itemuri($item["uri"], $importer["importer_uid"]); update_thread_uri($item["uri"], $importer["importer_uid"]); $changed = true; if ($entrytype == DFRN_REPLY_RC) { proc_run(PRIORITY_HIGH, "include/notifier.php","comment-import", $current["id"]); } } // update last-child if it changes if ($item["last-child"] && ($item["last-child"] != $current["last-child"])) { $r = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` IN (0, %d)", dbesc(datetime_convert()), dbesc($item["parent-uri"]), intval($importer["importer_uid"]) ); $r = q("UPDATE `item` SET `last-child` = %d , `changed` = '%s' WHERE `uri` = '%s' AND `uid` IN (0, %d)", intval($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 $item the new item record * * @return int Is it a toplevel entry, a comment or a relayed comment? * @todo set proper type-hints (array?) */ private static function get_entry_type($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 (dbm::is_result($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($importer["importer_uid"]) ); if (dbm::is_result($r)) { $is_a_remote_action = true; } } /* * Does this have the characteristics of a community or private group action? * If it's an action to a wall post on a community/prvgroup page it's a * valid community action. Also forum_mode makes it valid for sure. * If neither, it's not. */ /// @TODO Maybe merge these if() blocks into one? if ($is_a_remote_action && $community && (!$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 $posted_id The record number of item record that was just posted * @todo set proper type-hints (array?) */ private static function do_poke($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, System::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" => $item, "link" => System::baseUrl()."/display/".urlencode(get_item_guid($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 $is_like Is the verb a "like"? * * @return bool Should the processing of the entries be continued? * @todo set proper type-hints (array?) */ private static function process_verbs($entrytype, $importer, &$item, &$is_like) { logger("Process verb ".$item["verb"]." and object-type ".$item["object-type"]." for entrytype ".$entrytype, LOGGER_DEBUG); 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($item["parent-uri"]) ); if (dbm::is_result($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($item["parent-uri"]) ); if (dbm::is_result($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($importer["importer_uid"]) ); if (!dbm::is_result($r)) { logger("Query failed to execute, no result returned in " . __FUNCTION__); 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 $item the item record * @todo set proper type-hints */ private static function parse_links($links, &$item) { $rel = ""; $href = ""; $type = ""; $length = "0"; $title = ""; foreach ($links AS $link) { foreach ($link->attributes AS $attributes) { /// @TODO Rewrite these repeated (same) if () statements to a switch() if ($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 != "") && ($href != "")) { switch ($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 $importer Record of the importer user mixed with contact of the content * @todo Add type-hints */ private static function process_entry($header, $xpath, $entry, $importer, $xml) { logger("Processing entries"); $item = $header; $item["protocol"] = PROTOCOL_DFRN; $item["source"] = $xml; // Get the uri $item["uri"] = $xpath->query("atom:id/text()", $entry)->item(0)->nodeValue; $item["edited"] = $xpath->query("atom:updated/text()", $entry)->item(0)->nodeValue; $current = q("SELECT `id`, `uid`, `last-child`, `edited`, `body` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1", dbesc($item["uri"]), intval($importer["importer_uid"]) ); // Is there an existing item? if (dbm::is_result($current) && edited_timestamp_is_newer($current[0], $item) && (datetime_convert("UTC","UTC",$item["edited"]) < $current[0]["edited"])) { logger("Item ".$item["uri"]." already existed.", LOGGER_DEBUG); return; } // 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["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:bookmark/text()", $entry)->item(0)->nodeValue == "true") { $item["bookmark"] = true; } $notice_info = $xpath->query("statusnet:notice_info", $entry); if ($notice_info && ($notice_info->length > 0)) { foreach ($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) { $term = ""; $scheme = ""; foreach ($category->attributes AS $attributes) { if ($attributes->name == "term") { $term = $attributes->textContent; } if ($attributes->name == "scheme") { $scheme = $attributes->textContent; } } if (($term != "") && ($scheme != "")) { $parts = explode(":", $scheme); if ((count($parts) >= 4) && (array_shift($parts) == "X-DFRN")) { $termhash = array_shift($parts); $termurl = implode(":", $parts); if (strlen($item["tag"])) { $item["tag"] .= ","; } $item["tag"] .= $termhash . "[url=" . $termurl . "]" . $term . "[/url]"; } } } } $enclosure = ""; $links = $xpath->query("atom:link", $entry); if ($links) { self::parse_links($links, $item); } $item['conversation-uri'] = $xpath->query('ostatus:conversation/text()', $entry)->item(0)->nodeValue; $conv = $xpath->query('ostatus:conversation', $entry); if (is_object($conv->item(0))) { foreach ($conv->item(0)->attributes AS $attributes) { if ($attributes->name == "ref") { $item['conversation-uri'] = $attributes->textContent; } if ($attributes->name == "href") { $item['conversation-href'] = $attributes->textContent; } } } // 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"] != $owner["network"]) && ($owner["network"] != "")) { $item["network"] = $owner["network"]; } if ($item["contact-id"] != $author["contact-id"]) { $item["contact-id"] = $author["contact-id"]; } if (($item["network"] != $author["network"]) && ($author["network"] != "")) { $item["network"] = $author["network"]; } /// @TODO maybe remove this old-lost code then? // This code was taken from the old DFRN code // When activated, forums don't work. // And: Why should we disallow commenting by followers? // the behaviour is now similar to the Diaspora part. //if ($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); /// @TODO Mixure of "/' ahead ... $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($importer["uid"]) ); if (dbm::is_result($r)) { $ev["id"] = $r[0]["id"]; } $event_id = event_store($ev); logger("Event ".$event_id." was stored", LOGGER_DEBUG); return; } } } if (!self::process_verbs($entrytype, $importer, $item, $is_like)) { logger("Exiting because 'process_verbs' told us so", LOGGER_DEBUG); return; } // Update content if 'updated' changes if (dbm::is_result($current)) { 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($importer["importer_uid"]) ); if (dbm::is_result($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 && $parent && ($entrytype == DFRN_REPLY_RC)) { logger("Notifying followers about comment ".$posted_id, LOGGER_DEBUG); proc_run(PRIORITY_HIGH, "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 $importer Record of the importer user mixed with contact of the content * @todo set proper type-hints */ private static function process_deletion($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 || !$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 (!dbm::is_result($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($importer["importer_uid"]) ); if (dbm::is_result($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) { $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s', `body` = '', `title` = '' WHERE `parent-uri` = '%s' AND `uid` IN (0, %d)", dbesc($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 { $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s', `body` = '', `title` = '' WHERE `uri` = '%s' AND `uid` IN (0, %d)", dbesc($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` IN (0, %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($importer["uid"]) ); if (dbm::is_result($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(PRIORITY_HIGH, "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 $sort_by_date Is used when feeds are polled * @return integer Import status * @todo set proper type-hints */ public static function import($xml, $importer, $sort_by_date = false) { if ($xml == "") { return 400; } $doc = new DOMDocument(); @$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 " . $importer["id"], LOGGER_DEBUG); // The account type is new since 3.5.1 if ($xpath->query("/atom:feed/dfrn:account_type")->length > 0) { $accounttype = intval($xpath->evaluate("/atom:feed/dfrn:account_type/text()", $context)->item(0)->nodeValue); if ($accounttype != $importer["contact-type"]) { dba::update('contact', array('contact-type' => $accounttype), array('id' => $importer["id"])); } } // is it a public forum? Private forums aren't supported with this method // This is deprecated since 3.5.1 $forum = intval($xpath->evaluate("/atom:feed/dfrn:community/text()", $context)->item(0)->nodeValue); if ($forum != $importer["forum"]) { $condition = array('`forum` != ? AND `id` = ?', $forum, $importer["id"]); dba::update('contact', array('forum' => $forum), $condition); } // We are processing relocations even if we are ignoring a contact $relocations = $xpath->query("/atom:feed/dfrn:relocate"); foreach ($relocations AS $relocation) { self::process_relocation($xpath, $relocation, $importer); } if ($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 403; } $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); } $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, $xml); } } 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, $xml); } } logger("Import done for user " . $importer["uid"] . " from contact " . $importer["id"], LOGGER_DEBUG); return 200; } }