639 lines
19 KiB
PHP
639 lines
19 KiB
PHP
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<?php
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/**
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* @file include/diaspora.php
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* @brief The implementation of the diaspora protocol
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*/
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require_once("include/diaspora.php");
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require_once("include/Scrape.php");
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function array_to_xml($array, &$xml) {
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if (!is_object($xml)) {
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foreach($array as $key => $value) {
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$root = new SimpleXMLElement('<'.$key.'/>');
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array_to_xml($value, $root);
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$dom = dom_import_simplexml($root)->ownerDocument;
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$dom->formatOutput = true;
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return $dom->saveXML();
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}
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}
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foreach($array as $key => $value) {
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if (!is_array($value) AND !is_numeric($key))
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$xml->addChild($key, $value);
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elseif (is_array($value))
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array_to_xml($value, $xml->addChild($key));
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}
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}
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/**
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* @brief This class contain functions to create and send DFRN XML files
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*
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*/
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class diaspora {
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public static function dispatch_public($msg) {
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$enabled = intval(get_config("system", "diaspora_enabled"));
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if (!$enabled) {
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logger('diaspora is disabled');
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return false;
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}
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// Use a dummy importer to import the data for the public copy
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$importer = array("uid" => 0, "page-flags" => PAGE_FREELOVE);
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self::dispatch($importer,$msg);
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// Now distribute it to the followers
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$r = q("SELECT `user`.* FROM `user` WHERE `user`.`uid` IN
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(SELECT `contact`.`uid` FROM `contact` WHERE `contact`.`network` = '%s' AND `contact`.`addr` = '%s')
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AND NOT `account_expired` AND NOT `account_removed`",
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dbesc(NETWORK_DIASPORA),
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dbesc($msg["author"])
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);
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if(count($r)) {
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foreach($r as $rr) {
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logger("delivering to: ".$rr["username"]);
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self::dispatch($rr,$msg);
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}
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} else
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logger("No subscribers for ".$msg["author"]." ".print_r($msg, true));
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}
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public static function dispatch($importer, $msg) {
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// The sender is the handle of the contact that sent the message.
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// This will often be different with relayed messages (for example "like" and "comment")
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$sender = $msg->author;
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if (!diaspora::valid_posting($msg, $fields)) {
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logger("Invalid posting");
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return false;
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}
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$type = $fields->getName();
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switch ($type) {
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case "account_deletion":
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return self::import_account_deletion($importer, $fields);
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case "comment":
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return self::import_comment($importer, $sender, $fields);
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case "conversation":
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return self::import_conversation($importer, $fields);
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case "like":
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return self::import_like($importer, $sender, $fields);
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case "message":
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return self::import_message($importer, $fields);
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case "participation":
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return self::import_participation($importer, $fields);
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case "photo":
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return self::import_photo($importer, $fields);
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case "poll_participation":
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return self::import_poll_participation($importer, $fields);
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case "profile":
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return self::import_profile($importer, $fields);
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case "request":
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return self::import_request($importer, $fields);
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case "reshare":
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return self::import_reshare($importer, $fields);
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case "retraction":
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return self::import_retraction($importer, $fields);
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case "status_message":
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return self::import_status_message($importer, $fields);
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default:
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logger("Unknown message type ".$type);
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return false;
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}
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return true;
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}
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/**
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* @brief Checks if a posting is valid and fetches the data fields.
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*
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* This function does not only check the signature.
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* It also does the conversion between the old and the new diaspora format.
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*
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* @param array $msg Array with the XML, the sender handle and the sender signature
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* @param object $fields SimpleXML object that contains the posting
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*
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* @return bool Is the posting valid?
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*/
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private function valid_posting($msg, &$fields) {
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$data = parse_xml_string($msg->message, false);
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$first_child = $data->getName();
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if ($data->getName() == "XML") {
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$oldXML = true;
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foreach ($data->post->children() as $child)
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$element = $child;
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} else {
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$oldXML = false;
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$element = $data;
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}
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$type = $element->getName();
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if (in_array($type, array("signed_retraction", "relayable_retraction")))
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$type = "retraction";
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$fields = new SimpleXMLElement("<".$type."/>");
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$signed_data = "";
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foreach ($element->children() AS $fieldname => $data) {
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if ($oldXML) {
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// Translation for the old XML structure
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if ($fieldname == "diaspora_handle")
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$fieldname = "author";
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if ($fieldname == "participant_handles")
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$fieldname = "participants";
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if (in_array($type, array("like", "participation"))) {
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if ($fieldname == "target_type")
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$fieldname = "parent_type";
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}
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if ($fieldname == "sender_handle")
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$fieldname = "author";
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if ($fieldname == "recipient_handle")
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$fieldname = "recipient";
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if ($fieldname == "root_diaspora_id")
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$fieldname = "root_author";
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if ($type == "retraction") {
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if ($fieldname == "post_guid")
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$fieldname = "target_guid";
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if ($fieldname == "type")
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$fieldname = "target_type";
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}
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}
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if ($fieldname == "author_signature")
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$author_signature = base64_decode($data);
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elseif ($fieldname == "parent_author_signature")
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$parent_author_signature = base64_decode($data);
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elseif ($fieldname != "target_author_signature") {
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if ($signed_data != "") {
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$signed_data .= ";";
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$signed_data_parent .= ";";
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}
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$signed_data .= $data;
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$fields->$fieldname = $data;
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}
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}
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if (in_array($type, array("status_message", "reshare")))
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if ($msg->author != $fields->author) {
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logger("Message handle is not the same as envelope sender. Quitting this message.");
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return false;
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}
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if (!in_array($type, array("comment", "conversation", "message", "like")))
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return true;
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if (!isset($author_signature))
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return false;
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if (isset($parent_author_signature)) {
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$key = self::get_key($msg->author);
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if (!rsa_verify($signed_data, $parent_author_signature, $key, "sha256"))
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return false;
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}
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$key = self::get_key($fields->author);
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return rsa_verify($signed_data, $author_signature, $key, "sha256");
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}
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private function get_key($handle) {
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logger("Fetching diaspora key for: ".$handle);
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$r = self::get_person_by_handle($handle);
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if($r)
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return $r["pubkey"];
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return "";
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}
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private function get_person_by_handle($handle) {
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$r = q("SELECT * FROM `fcontact` WHERE `network` = '%s' AND `addr` = '%s' LIMIT 1",
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dbesc(NETWORK_DIASPORA),
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dbesc($handle)
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);
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if (count($r)) {
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$person = $r[0];
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logger("In cache ".print_r($r,true), LOGGER_DEBUG);
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// update record occasionally so it doesn't get stale
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$d = strtotime($person["updated"]." +00:00");
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if ($d < strtotime("now - 14 days"))
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$update = true;
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}
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if (!$person OR $update) {
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logger("create or refresh", LOGGER_DEBUG);
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$r = probe_url($handle, PROBE_DIASPORA);
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// Note that Friendica contacts will return a "Diaspora person"
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// if Diaspora connectivity is enabled on their server
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if (count($r) AND ($r["network"] === NETWORK_DIASPORA)) {
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self::add_fcontact($r, $update);
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$person = $r;
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}
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}
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return $person;
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}
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private function add_fcontact($arr, $update = false) {
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/// @todo Remove this function from include/network.php
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if($update) {
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$r = q("UPDATE `fcontact` SET
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`name` = '%s',
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`photo` = '%s',
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`request` = '%s',
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`nick` = '%s',
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`addr` = '%s',
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`batch` = '%s',
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`notify` = '%s',
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`poll` = '%s',
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`confirm` = '%s',
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`alias` = '%s',
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`pubkey` = '%s',
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`updated` = '%s'
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WHERE `url` = '%s' AND `network` = '%s'",
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dbesc($arr["name"]),
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dbesc($arr["photo"]),
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dbesc($arr["request"]),
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dbesc($arr["nick"]),
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dbesc($arr["addr"]),
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dbesc($arr["batch"]),
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dbesc($arr["notify"]),
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dbesc($arr["poll"]),
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dbesc($arr["confirm"]),
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dbesc($arr["alias"]),
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dbesc($arr["pubkey"]),
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dbesc(datetime_convert()),
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dbesc($arr["url"]),
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dbesc($arr["network"])
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);
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} else {
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$r = q("INSERT INTO `fcontact` (`url`,`name`,`photo`,`request`,`nick`,`addr`,
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`batch`, `notify`,`poll`,`confirm`,`network`,`alias`,`pubkey`,`updated`)
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VALUES ('%s','%s','%s','%s','%s','%s','%s','%s','%s','%s','%s','%s','%s','%s')",
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dbesc($arr["url"]),
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dbesc($arr["name"]),
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dbesc($arr["photo"]),
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dbesc($arr["request"]),
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dbesc($arr["nick"]),
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dbesc($arr["addr"]),
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dbesc($arr["batch"]),
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dbesc($arr["notify"]),
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dbesc($arr["poll"]),
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dbesc($arr["confirm"]),
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dbesc($arr["network"]),
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dbesc($arr["alias"]),
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dbesc($arr["pubkey"]),
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dbesc(datetime_convert())
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);
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}
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return $r;
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}
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private function get_contact_by_handle($uid, $handle) {
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$r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `addr` = '%s' LIMIT 1",
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intval($uid),
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dbesc($handle)
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);
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if ($r AND count($r))
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return $r[0];
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$handle_parts = explode("@", $handle);
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$nurl_sql = '%%://' . $handle_parts[1] . '%%/profile/' . $handle_parts[0];
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$r = q("SELECT * FROM `contact` WHERE `network` = '%s' AND `uid` = %d AND `nurl` LIKE '%s' LIMIT 1",
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dbesc(NETWORK_DFRN),
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intval($uid),
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dbesc($nurl_sql)
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);
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if($r AND count($r))
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return $r[0];
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return false;
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}
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/*
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function DiasporaFetchGuid($item) {
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preg_replace_callback("&\[url=/posts/([^\[\]]*)\](.*)\[\/url\]&Usi",
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function ($match) use ($item){
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return(DiasporaFetchGuidSub($match, $item));
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},$item["body"]);
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}
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function DiasporaFetchGuidSub($match, $item) {
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$a = get_app();
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if (!diaspora_store_by_guid($match[1], $item["author-link"]))
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diaspora_store_by_guid($match[1], $item["owner-link"]);
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}
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function diaspora_store_by_guid($guid, $server, $uid = 0) {
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require_once("include/Contact.php");
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$serverparts = parse_url($server);
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$server = $serverparts["scheme"]."://".$serverparts["host"];
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logger("Trying to fetch item ".$guid." from ".$server, LOGGER_DEBUG);
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$item = diaspora_fetch_message($guid, $server);
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if (!$item)
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return false;
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logger("Successfully fetched item ".$guid." from ".$server, LOGGER_DEBUG);
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$body = $item["body"];
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$str_tags = $item["tag"];
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$app = $item["app"];
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$created = $item["created"];
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$author = $item["author"];
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$guid = $item["guid"];
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$private = $item["private"];
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$object = $item["object"];
|
||
|
|
$objecttype = $item["object-type"];
|
||
|
|
|
||
|
|
$message_id = $author.':'.$guid;
|
||
|
|
$r = q("SELECT `id` FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
|
||
|
|
intval($uid),
|
||
|
|
dbesc($guid)
|
||
|
|
);
|
||
|
|
if(count($r))
|
||
|
|
return $r[0]["id"];
|
||
|
|
|
||
|
|
$person = find_diaspora_person_by_handle($author);
|
||
|
|
|
||
|
|
$contact_id = get_contact($person['url'], $uid);
|
||
|
|
|
||
|
|
$contacts = q("SELECT * FROM `contact` WHERE `id` = %d", intval($contact_id));
|
||
|
|
$importers = q("SELECT * FROM `user` WHERE `uid` = %d", intval($uid));
|
||
|
|
|
||
|
|
if ($contacts AND $importers)
|
||
|
|
if(!diaspora_post_allow($importers[0],$contacts[0], false)) {
|
||
|
|
logger('Ignoring author '.$person['url'].' for uid '.$uid);
|
||
|
|
return false;
|
||
|
|
} else
|
||
|
|
logger('Author '.$person['url'].' is allowed for uid '.$uid);
|
||
|
|
|
||
|
|
$datarray = array();
|
||
|
|
$datarray['uid'] = $uid;
|
||
|
|
$datarray['contact-id'] = $contact_id;
|
||
|
|
$datarray['wall'] = 0;
|
||
|
|
$datarray['network'] = NETWORK_DIASPORA;
|
||
|
|
$datarray['guid'] = $guid;
|
||
|
|
$datarray['uri'] = $datarray['parent-uri'] = $message_id;
|
||
|
|
$datarray['changed'] = $datarray['created'] = $datarray['edited'] = datetime_convert('UTC','UTC',$created);
|
||
|
|
$datarray['private'] = $private;
|
||
|
|
$datarray['parent'] = 0;
|
||
|
|
$datarray['plink'] = diaspora_plink($author, $guid);
|
||
|
|
$datarray['author-name'] = $person['name'];
|
||
|
|
$datarray['author-link'] = $person['url'];
|
||
|
|
$datarray['author-avatar'] = ((x($person,'thumb')) ? $person['thumb'] : $person['photo']);
|
||
|
|
$datarray['owner-name'] = $datarray['author-name'];
|
||
|
|
$datarray['owner-link'] = $datarray['author-link'];
|
||
|
|
$datarray['owner-avatar'] = $datarray['author-avatar'];
|
||
|
|
$datarray['body'] = $body;
|
||
|
|
$datarray['tag'] = $str_tags;
|
||
|
|
$datarray['app'] = $app;
|
||
|
|
$datarray['visible'] = ((strlen($body)) ? 1 : 0);
|
||
|
|
$datarray['object'] = $object;
|
||
|
|
$datarray['object-type'] = $objecttype;
|
||
|
|
|
||
|
|
if ($datarray['contact-id'] == 0)
|
||
|
|
return false;
|
||
|
|
|
||
|
|
DiasporaFetchGuid($datarray);
|
||
|
|
$message_id = item_store($datarray);
|
||
|
|
|
||
|
|
/// @TODO
|
||
|
|
/// Looking if there is some subscribe mechanism in Diaspora to get all comments for this post
|
||
|
|
|
||
|
|
return $message_id;
|
||
|
|
}
|
||
|
|
*/
|
||
|
|
|
||
|
|
private function import_account_deletion($importer, $data) {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
private function import_comment($importer, $sender, $data) {
|
||
|
|
$guid = notags(unxmlify($data->guid));
|
||
|
|
$parent_guid = notags(unxmlify($data->parent_guid));
|
||
|
|
$text = unxmlify($data->text);
|
||
|
|
$author = notags(unxmlify($data->author));
|
||
|
|
|
||
|
|
$contact = self::get_contact_by_handle($importer["uid"], $sender);
|
||
|
|
if (!$contact) {
|
||
|
|
logger("cannot find contact for sender: ".$sender);
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
/*
|
||
|
|
if(! diaspora_post_allow($importer,$contact, true)) {
|
||
|
|
logger('diaspora_comment: Ignoring this author.');
|
||
|
|
return 202;
|
||
|
|
}
|
||
|
|
|
||
|
|
$r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
|
||
|
|
intval($importer['uid']),
|
||
|
|
dbesc($guid)
|
||
|
|
);
|
||
|
|
if(count($r)) {
|
||
|
|
logger('diaspora_comment: our comment just got relayed back to us (or there was a guid collision) : ' . $guid);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
$r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
|
||
|
|
intval($importer['uid']),
|
||
|
|
dbesc($parent_guid)
|
||
|
|
);
|
||
|
|
|
||
|
|
if(!count($r)) {
|
||
|
|
$result = diaspora_store_by_guid($parent_guid, $contact['url'], $importer['uid']);
|
||
|
|
|
||
|
|
if (!$result) {
|
||
|
|
$person = find_diaspora_person_by_handle($diaspora_handle);
|
||
|
|
$result = diaspora_store_by_guid($parent_guid, $person['url'], $importer['uid']);
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($result) {
|
||
|
|
logger("Fetched missing item ".$parent_guid." - result: ".$result, LOGGER_DEBUG);
|
||
|
|
|
||
|
|
$r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
|
||
|
|
intval($importer['uid']),
|
||
|
|
dbesc($parent_guid)
|
||
|
|
);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if(! count($r)) {
|
||
|
|
logger('diaspora_comment: parent item not found: parent: ' . $parent_guid . ' item: ' . $guid);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
$parent_item = $r[0];
|
||
|
|
|
||
|
|
// Find the original comment author information.
|
||
|
|
// We need this to make sure we display the comment author
|
||
|
|
// information (name and avatar) correctly.
|
||
|
|
if(strcasecmp($diaspora_handle,$msg['author']) == 0)
|
||
|
|
$person = $contact;
|
||
|
|
else {
|
||
|
|
$person = find_diaspora_person_by_handle($diaspora_handle);
|
||
|
|
|
||
|
|
if(! is_array($person)) {
|
||
|
|
logger('diaspora_comment: unable to find author details');
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Fetch the contact id - if we know this contact
|
||
|
|
$r = q("SELECT `id`, `network` FROM `contact` WHERE `nurl` = '%s' AND `uid` = %d LIMIT 1",
|
||
|
|
dbesc(normalise_link($person['url'])), intval($importer['uid']));
|
||
|
|
if ($r) {
|
||
|
|
$cid = $r[0]['id'];
|
||
|
|
$network = $r[0]['network'];
|
||
|
|
} else {
|
||
|
|
$cid = $contact['id'];
|
||
|
|
$network = NETWORK_DIASPORA;
|
||
|
|
}
|
||
|
|
|
||
|
|
$body = diaspora2bb($text);
|
||
|
|
$message_id = $diaspora_handle . ':' . $guid;
|
||
|
|
|
||
|
|
$datarray = array();
|
||
|
|
|
||
|
|
$datarray['uid'] = $importer['uid'];
|
||
|
|
$datarray['contact-id'] = $cid;
|
||
|
|
$datarray['type'] = 'remote-comment';
|
||
|
|
$datarray['wall'] = $parent_item['wall'];
|
||
|
|
$datarray['network'] = $network;
|
||
|
|
$datarray['verb'] = ACTIVITY_POST;
|
||
|
|
$datarray['gravity'] = GRAVITY_COMMENT;
|
||
|
|
$datarray['guid'] = $guid;
|
||
|
|
$datarray['uri'] = $message_id;
|
||
|
|
$datarray['parent-uri'] = $parent_item['uri'];
|
||
|
|
|
||
|
|
// No timestamps for comments? OK, we'll the use current time.
|
||
|
|
$datarray['changed'] = $datarray['created'] = $datarray['edited'] = datetime_convert();
|
||
|
|
$datarray['private'] = $parent_item['private'];
|
||
|
|
|
||
|
|
$datarray['owner-name'] = $parent_item['owner-name'];
|
||
|
|
$datarray['owner-link'] = $parent_item['owner-link'];
|
||
|
|
$datarray['owner-avatar'] = $parent_item['owner-avatar'];
|
||
|
|
|
||
|
|
$datarray['author-name'] = $person['name'];
|
||
|
|
$datarray['author-link'] = $person['url'];
|
||
|
|
$datarray['author-avatar'] = ((x($person,'thumb')) ? $person['thumb'] : $person['photo']);
|
||
|
|
$datarray['body'] = $body;
|
||
|
|
$datarray["object"] = json_encode($xml);
|
||
|
|
$datarray["object-type"] = ACTIVITY_OBJ_COMMENT;
|
||
|
|
|
||
|
|
// We can't be certain what the original app is if the message is relayed.
|
||
|
|
if(($parent_item['origin']) && (! $parent_author_signature))
|
||
|
|
$datarray['app'] = 'Diaspora';
|
||
|
|
|
||
|
|
DiasporaFetchGuid($datarray);
|
||
|
|
$message_id = item_store($datarray);
|
||
|
|
|
||
|
|
$datarray['id'] = $message_id;
|
||
|
|
|
||
|
|
// If we are the origin of the parent we store the original signature and notify our followers
|
||
|
|
if($parent_item['origin']) {
|
||
|
|
$author_signature_base64 = base64_encode($author_signature);
|
||
|
|
$author_signature_base64 = diaspora_repair_signature($author_signature_base64, $diaspora_handle);
|
||
|
|
|
||
|
|
q("insert into sign (`iid`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ",
|
||
|
|
intval($message_id),
|
||
|
|
dbesc($signed_data),
|
||
|
|
dbesc($author_signature_base64),
|
||
|
|
dbesc($diaspora_handle)
|
||
|
|
);
|
||
|
|
|
||
|
|
// notify others
|
||
|
|
proc_run('php','include/notifier.php','comment-import',$message_id);
|
||
|
|
}
|
||
|
|
*/
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
private function import_conversation($importer, $data) {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
private function import_like($importer, $sender, $data) {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
private function import_message($importer, $data) {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
private function import_participation($importer, $data) {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
private function import_photo($importer, $data) {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
private function import_poll_participation($importer, $data) {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
private function import_profile($importer, $data) {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
private function import_request($importer, $data) {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
private function import_reshare($importer, $data) {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
private function import_retraction($importer, $data) {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
private function import_status_message($importer, $data) {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
?>
|