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+<?php
+ /**
+ * XMPPHP: The PHP XMPP Library
+ * Copyright (C) 2008 Nathanael C. Fritz
+ * This file is part of SleekXMPP.
+ *
+ * XMPPHP is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * XMPPHP is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with XMPPHP; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * @category xmpphp
+ * @package XMPPHP
+ * @author Nathanael C. Fritz <JID: fritzy@netflint.net>
+ * @author Stephan Wentz <JID: stephan@jabber.wentz.it>
+ * @author Michael Garvin <JID: gar@netflint.net>
+ * @author Alexander Birkner (https://github.com/BirknerAlex)
+ * @copyright 2008 Nathanael C. Fritz
+ */
+/**
+ * XMPPHP Main Class
+ *
+ * @category xmpphp
+ * @package XMPPHP
+ * @author Nathanael C. Fritz <JID: fritzy@netflint.net>
+ * @author Stephan Wentz <JID: stephan@jabber.wentz.it>
+ * @author Michael Garvin <JID: gar@netflint.net>
+ * @copyright 2008 Nathanael C. Fritz
+ * @version $Id$
+ */
+class XMLStream {
+ /**
+ * @var resource
+ */
+ protected $socket;
+ /**
+ * @var resource
+ */
+ protected $parser;
+ /**
+ * @var string
+ */
+ protected $buffer;
+ /**
+ * @var integer
+ */
+ protected $xml_depth = 0;
+ /**
+ * @var string
+ */
+ protected $host;
+ /**
+ * @var integer
+ */
+ protected $port;
+ /**
+ * @var string
+ */
+ protected $stream_start = '<stream>';
+ /**
+ * @var string
+ */
+ protected $stream_end = '</stream>';
+ /**
+ * @var boolean
+ */
+ protected $disconnected = true;
+ /**
+ * @var boolean
+ */
+ protected $sent_disconnect = false;
+ /**
+ * @var array
+ */
+ protected $ns_map = array();
+ /**
+ * @var array
+ */
+ protected $current_ns = array();
+ /**
+ * @var array
+ */
+ protected $xmlobj = null;
+ /**
+ * @var array
+ */
+ protected $nshandlers = array();
+ /**
+ * @var array
+ */
+ protected $xpathhandlers = array();
+ /**
+ * @var array
+ */
+ protected $idhandlers = array();
+ /**
+ * @var array
+ */
+ protected $eventhandlers = array();
+ /**
+ * @var integer
+ */
+ protected $lastid = 0;
+ /**
+ * @var string
+ */
+ protected $default_ns;
+ /**
+ * @var string
+ */
+ protected $until = '';
+ /**
+ * @var string
+ */
+ protected $until_count = '';
+ /**
+ * @var array
+ */
+ protected $until_happened = false;
+ /**
+ * @var array
+ */
+ protected $until_payload = array();
+ /**
+ * @var XMPXMPPPLog
+ */
+ protected $log;
+ /**
+ * @var boolean
+ */
+ protected $reconnect = true;
+ /**
+ * @var boolean
+ */
+ protected $been_reset = false;
+ /**
+ * @var boolean
+ */
+ protected $is_server;
+ /**
+ * @var float
+ */
+ protected $last_send = 0;
+ /**
+ * @var boolean
+ */
+ protected $use_ssl = false;
+ /**
+ * @var integer
+ */
+ protected $reconnectTimeout = 30;
+ /**
+ * Constructor
+ *
+ * @param string $host
+ * @param string $port
+ * @param boolean $printlog
+ * @param string $loglevel
+ * @param boolean $is_server
+ */
+ public function __construct($host = null, $port = null, $printlog = false, $loglevel = null, $is_server = false) {
+ $this->reconnect = !$is_server;
+ $this->is_server = $is_server;
+ $this->host = $host;
+ $this->port = $port;
+ $this->setupParser();
+ $this->log = new XMPPLog($printlog, $loglevel);
+ }
+ /**
+ * Destructor
+ * Cleanup connection
+ */
+ public function __destruct() {
+ if(!$this->disconnected && $this->socket) {
+ $this->disconnect();
+ }
+ }
+
+ /**
+ * Return the log instance
+ *
+ * @return XMPPLog
+ */
+ public function getLog() {
+ return $this->log;
+ }
+
+ /**
+ * Get next ID
+ *
+ * @return integer
+ */
+ public function getId() {
+ $this->lastid++;
+ return $this->lastid;
+ }
+ /**
+ * Set SSL
+ *
+ * @return integer
+ */
+ public function useSSL($use=true) {
+ $this->use_ssl = $use;
+ }
+ /**
+ * Add ID Handler
+ *
+ * @param integer $id
+ * @param string $pointer
+ * @param string $obj
+ */
+ public function addIdHandler($id, $pointer, $obj = null) {
+ $this->idhandlers[$id] = array($pointer, $obj);
+ }
+ /**
+ * Add Handler
+ *
+ * @param string $name
+ * @param string $ns
+ * @param string $pointer
+ * @param string $obj
+ * @param integer $depth
+ */
+ public function addHandler($name, $ns, $pointer, $obj = null, $depth = 1) {
+ #TODO deprication warning
+ $this->nshandlers[] = array($name,$ns,$pointer,$obj, $depth);
+ }
+ /**
+ * Add XPath Handler
+ *
+ * @param string $xpath
+ * @param string $pointer
+ * @param
+ */
+ public function addXPathHandler($xpath, $pointer, $obj = null) {
+ if (preg_match_all("/\(?{[^\}]+}\)?(\/?)[^\/]+/", $xpath, $regs)) {
+ $ns_tags = $regs[0];
+ } else {
+ $ns_tags = array($xpath);
+ }
+ foreach($ns_tags as $ns_tag) {
+ list($l, $r) = explode('}', $ns_tag);
+ if ($r != null) {
+ $xpart = array(substr($l, 1), $r);
+ } else {
+ $xpart = array(null, $l);
+ }
+ $xpath_array[] = $xpart;
+ }
+ $this->xpathhandlers[] = array($xpath_array, $pointer, $obj);
+ }
+ /**
+ * Add Event Handler
+ *
+ * @param integer $id
+ * @param string $pointer
+ * @param string $obj
+ */
+ public function addEventHandler($name, $pointer, $obj) {
+ $this->eventhandlers[] = array($name, $pointer, $obj);
+ }
+ /**
+ * Connect to XMPP Host
+ *
+ * @param integer $timeout Timeout in seconds
+ * @param boolean $persistent
+ * @param boolean $sendinit Send XMPP starting sequence after connect
+ * automatically
+ *
+ * @throws XMPPException When the connection fails
+ */
+ public function connect($timeout = 30, $persistent = false, $sendinit = true) {
+ $this->sent_disconnect = false;
+ $starttime = time();
+
+ do {
+ $this->disconnected = false;
+ $this->sent_disconnect = false;
+ if($persistent) {
+ $conflag = STREAM_CLIENT_CONNECT | STREAM_CLIENT_PERSISTENT;
+ } else {
+ $conflag = STREAM_CLIENT_CONNECT;
+ }
+ $conntype = 'tcp';
+ if($this->use_ssl) $conntype = 'ssl';
+ $this->log->log("Connecting to $conntype://{$this->host}:{$this->port}");
+ try {
+ $options = [
+ 'ssl' => [
+ 'allow_self_signed' => true,
+ 'verify_peer_name' => false,
+ ],
+ ];
+ $context = stream_context_create($options);
+ $this->socket = @stream_socket_client("$conntype://{$this->host}:{$this->port}", $errno, $errstr, $timeout, $conflag, $context);
+ } catch (Exception $e) {
+ throw new XMPPException($e->getMessage());
+ }
+ if(!$this->socket) {
+ $this->log->log("Could not connect.", XMPPLog::LEVEL_ERROR);
+ $this->disconnected = true;
+ # Take it easy for a few seconds
+ sleep(min($timeout, 5));
+ }
+ } while (!$this->socket && (time() - $starttime) < $timeout);
+
+ if ($this->socket) {
+ stream_set_blocking($this->socket, 1);
+ if($sendinit) $this->send($this->stream_start);
+ } else {
+ throw new XMPPException("Could not connect before timeout.");
+ }
+ }
+ /**
+ * Reconnect XMPP Host
+ *
+ * @throws XMPPException When the connection fails
+ * @uses $reconnectTimeout
+ * @see setReconnectTimeout()
+ */
+ public function doReconnect() {
+ if(!$this->is_server) {
+ $this->log->log("Reconnecting ($this->reconnectTimeout)...", XMPPLog::LEVEL_WARNING);
+ $this->connect($this->reconnectTimeout, false, false);
+ $this->reset();
+ $this->event('reconnect');
+ }
+ }
+ public function setReconnectTimeout($timeout) {
+ $this->reconnectTimeout = $timeout;
+ }
+
+ /**
+ * Disconnect from XMPP Host
+ */
+ public function disconnect() {
+ $this->log->log("Disconnecting...", XMPPLog::LEVEL_VERBOSE);
+ if(false == (bool) $this->socket) {
+ return;
+ }
+ $this->reconnect = false;
+ $this->send($this->stream_end);
+ $this->sent_disconnect = true;
+ $this->processUntil('end_stream', 5);
+ $this->disconnected = true;
+ }
+ /**
+ * Are we are disconnected?
+ *
+ * @return boolean
+ */
+ public function isDisconnected() {
+ return $this->disconnected;
+ }
+ /**
+ * Checks if the given string is closed with the same tag as it is
+ * opened. We try to be as fast as possible here.
+ *
+ * @param string $buff Read buffer of __process()
+ *
+ * @return boolean true if the buffer seems to be complete
+ */
+ protected function bufferComplete($buff)
+ {
+ if (substr($buff, -1) != '>') {
+ return false;
+ }
+ //we always have a space since the namespace needs to be
+ //declared. could be a tab, though
+ $start = substr(
+ $buff, 1,
+ min(strpos($buff, '>', 2), strpos($buff, ' ', 2)) - 1
+ );
+ $stop = substr($buff, -strlen($start) - 3);
+ if ($start == '?xml') {
+ //starting with an xml tag. this means a stream is being
+ // opened, which is not much of data, so no fear it's
+ // not complete
+ return true;
+ }
+ if (substr($stop, -2) == '/>') {
+ //one tag, i.e. <success />
+ return true;
+ }
+ if ('</' . $start . '>' == $stop) {
+ return true;
+ }
+ return false;
+ }
+ /**
+ * Core reading tool
+ *
+ * @param mixed $maximum Limit when to return
+ * - 0: only read if data is immediately ready
+ * - NULL: wait forever and ever
+ * - integer: process for this amount of microseconds
+ * @param boolean $return_when_received Immediately return when data have been
+ * received
+ *
+ * @return boolean True when all goes well, false when something fails
+ */
+ private function __process($maximum = 5, $return_when_received = false)
+ {
+ $remaining = $maximum;
+
+ do {
+ $starttime = (microtime(true) * 1000000);
+ $read = array($this->socket);
+ $write = array();
+ $except = array();
+ if (is_null($maximum)) {
+ $secs = NULL;
+ $usecs = NULL;
+ } else if ($maximum == 0) {
+ $secs = 0;
+ $usecs = 0;
+ } else {
+ $usecs = $remaining % 1000000;
+ $secs = floor(($remaining - $usecs) / 1000000);
+ }
+ $updated = @stream_select($read, $write, $except, $secs, $usecs);
+ if ($updated === false) {
+ $this->log->log("Error on stream_select()", XMPPLog::LEVEL_VERBOSE);
+ if ($this->reconnect) {
+ $this->doReconnect();
+ } else {
+ fclose($this->socket);
+ $this->socket = NULL;
+ return false;
+ }
+ } else if ($updated > 0) {
+ $buff = '';
+ do {
+ if ($buff != '') {
+ //disable blocking for now because fread() will
+ // block until the 4k are full if we already
+ // read a part of the packet
+ stream_set_blocking($this->socket, 0);
+ }
+ $part = fread($this->socket, 4096);
+ stream_set_blocking($this->socket, 1);
+ if (!$part) {
+ if($this->reconnect) {
+ $this->doReconnect();
+ } else {
+ fclose($this->socket);
+ $this->socket = NULL;
+ return false;
+ }
+ }
+ $this->log->log("RECV: $part", XMPPLog::LEVEL_VERBOSE);
+ $buff .= $part;
+ } while (!$this->bufferComplete($buff));
+ xml_parse($this->parser, $buff, false);
+ if ($return_when_received) {
+ return true;
+ }
+ } else {
+ # $updated == 0 means no changes during timeout.
+ }
+ $endtime = (microtime(true)*1000000);
+ $time_past = $endtime - $starttime;
+ $remaining = $remaining - $time_past;
+ } while (is_null($maximum) || $remaining > 0);
+ return true;
+ }
+
+ /**
+ * Process
+ *
+ * @return string
+ */
+ public function process() {
+ $this->__process(NULL);
+ }
+ /**
+ * Process until a timeout occurs
+ *
+ * @param integer $timeout Time in seconds
+ *
+ * @return string
+ *
+ * @see __process()
+ */
+ public function processTime($timeout=NULL) {
+ if (is_null($timeout)) {
+ return $this->__process(NULL);
+ } else {
+ return $this->__process($timeout * 1000000);
+ }
+ }
+ /**
+ * Process until a specified event or a timeout occurs
+ *
+ * @param string|array $event Event name or array of event names
+ * @param integer $timeout Timeout in seconds
+ *
+ * @return array Payload
+ */
+ public function processUntil($event, $timeout = -1)
+ {
+ if ($this->disconnected) {
+ throw new XMPPException('You need to connect first');
+ }
+ $start = time();
+ if (!is_array($event)) {
+ $event = array($event);
+ }
+ $this->until[] = $event;
+ end($this->until);
+ $event_key = key($this->until);
+ reset($this->until);
+ $this->until_count[$event_key] = 0;
+ $updated = '';
+ while (!$this->disconnected
+ && $this->until_count[$event_key] < 1
+ && ($timeout == -1 || time() - $start < $timeout)
+ ) {
+ $maximum = $timeout == -1
+ ? NULL
+ : ($timeout - (time() - $start)) * 1000000;
+ $ret = $this->__process($maximum, true);
+ if (!$ret) {
+ break;
+ }
+ }
+ if (array_key_exists($event_key, $this->until_payload)) {
+ $payload = $this->until_payload[$event_key];
+ unset($this->until_payload[$event_key]);
+ unset($this->until_count[$event_key]);
+ unset($this->until[$event_key]);
+ } else {
+ $payload = array();
+ }
+ return $payload;
+ }
+ /**
+ * Obsolete?
+ */
+ public function Xapply_socket($socket) {
+ $this->socket = $socket;
+ }
+ /**
+ * XML start callback
+ *
+ * @see xml_set_element_handler
+ *
+ * @param resource $parser
+ * @param string $name
+ */
+ public function startXML($parser, $name, $attr) {
+ if($this->been_reset) {
+ $this->been_reset = false;
+ $this->xml_depth = 0;
+ }
+ $this->xml_depth++;
+ if(array_key_exists('XMLNS', $attr)) {
+ $this->current_ns[$this->xml_depth] = $attr['XMLNS'];
+ } else {
+ $this->current_ns[$this->xml_depth] = $this->current_ns[$this->xml_depth - 1];
+ if(!$this->current_ns[$this->xml_depth]) $this->current_ns[$this->xml_depth] = $this->default_ns;
+ }
+ $ns = $this->current_ns[$this->xml_depth];
+ foreach($attr as $key => $value) {
+ if(strstr($key, ":")) {
+ $key = explode(':', $key);
+ $key = $key[1];
+ $this->ns_map[$key] = $value;
+ }
+ }
+ if(!strstr($name, ":") === false)
+ {
+ $name = explode(':', $name);
+ $ns = $this->ns_map[$name[0]];
+ $name = $name[1];
+ }
+ $obj = new XMLObj($name, $ns, $attr);
+ if($this->xml_depth > 1) {
+ $this->xmlobj[$this->xml_depth - 1]->subs[] = $obj;
+ }
+ $this->xmlobj[$this->xml_depth] = $obj;
+ }
+ /**
+ * XML end callback
+ *
+ * @see xml_set_element_handler
+ *
+ * @param resource $parser
+ * @param string $name
+ */
+ public function endXML($parser, $name) {
+ #$this->log->log("Ending $name", XMPPLog::LEVEL_DEBUG);
+ #print "$name\n";
+ if($this->been_reset) {
+ $this->been_reset = false;
+ $this->xml_depth = 0;
+ }
+ $this->xml_depth--;
+ if($this->xml_depth == 1) {
+ #clean-up old objects
+ #$found = false; #FIXME This didn't appear to be in use --Gar
+ foreach($this->xpathhandlers as $handler) {
+ if (is_array($this->xmlobj) && array_key_exists(2, $this->xmlobj)) {
+ $searchxml = $this->xmlobj[2];
+ $nstag = array_shift($handler[0]);
+ if (($nstag[0] == null or $searchxml->ns == $nstag[0]) and ($nstag[1] == "*" or $nstag[1] == $searchxml->name)) {
+ foreach($handler[0] as $nstag) {
+ if ($searchxml !== null and $searchxml->hasSub($nstag[1], $ns=$nstag[0])) {
+ $searchxml = $searchxml->sub($nstag[1], $ns=$nstag[0]);
+ } else {
+ $searchxml = null;
+ break;
+ }
+ }
+ if ($searchxml !== null) {
+ if($handler[2] === null) $handler[2] = $this;
+ $this->log->log("Calling {$handler[1]}", XMPPLog::LEVEL_DEBUG);
+ call_user_func([$handler[2], $handler[1]], $this->xmlobj[2]);
+ }
+ }
+ }
+ }
+ foreach($this->nshandlers as $handler) {
+ if($handler[4] != 1 and array_key_exists(2, $this->xmlobj) and $this->xmlobj[2]->hasSub($handler[0])) {
+ $searchxml = $this->xmlobj[2]->sub($handler[0]);
+ } elseif(is_array($this->xmlobj) and array_key_exists(2, $this->xmlobj)) {
+ $searchxml = $this->xmlobj[2];
+ }
+ if($searchxml !== null and $searchxml->name == $handler[0] and ($searchxml->ns == $handler[1] or (!$handler[1] and $searchxml->ns == $this->default_ns))) {
+ if($handler[3] === null) $handler[3] = $this;
+ $this->log->log("Calling {$handler[2]}", XMPPLog::LEVEL_DEBUG);
+ call_user_func([$handler[3], $handler[2]], $this->xmlobj[2]);
+ }
+ }
+ foreach($this->idhandlers as $id => $handler) {
+ if(array_key_exists('id', $this->xmlobj[2]->attrs) and $this->xmlobj[2]->attrs['id'] == $id) {
+ if($handler[1] === null) $handler[1] = $this;
+ call_user_func([$handler[1], $handler[0]], $this->xmlobj[2]);
+ #id handlers are only used once
+ unset($this->idhandlers[$id]);
+ break;
+ }
+ }
+ if(is_array($this->xmlobj)) {
+ $this->xmlobj = array_slice($this->xmlobj, 0, 1);
+ if(isset($this->xmlobj[0]) && $this->xmlobj[0] instanceof XMLObj) {
+ $this->xmlobj[0]->subs = null;
+ }
+ }
+ unset($this->xmlobj[2]);
+ }
+ if($this->xml_depth == 0 and !$this->been_reset) {
+ if(!$this->disconnected) {
+ if(!$this->sent_disconnect) {
+ $this->send($this->stream_end);
+ }
+ $this->disconnected = true;
+ $this->sent_disconnect = true;
+ fclose($this->socket);
+ if($this->reconnect) {
+ $this->doReconnect();
+ }
+ }
+ $this->event('end_stream');
+ }
+ }
+ /**
+ * XML character callback
+ * @see xml_set_character_data_handler
+ *
+ * @param resource $parser
+ * @param string $data
+ */
+ public function charXML($parser, $data) {
+ if(array_key_exists($this->xml_depth, $this->xmlobj)) {
+ $this->xmlobj[$this->xml_depth]->data .= $data;
+ }
+ }
+ /**
+ * Event?
+ *
+ * @param string $name
+ * @param string $payload
+ */
+ public function event($name, $payload = null) {
+ $this->log->log("EVENT: $name", XMPPLog::LEVEL_DEBUG);
+ foreach($this->eventhandlers as $handler) {
+ if($name == $handler[0]) {
+ if($handler[2] === null) {
+ $handler[2] = $this;
+ }
+ call_user_func([$handler[2], $handler[1]], $payload);
+ }
+ }
+ foreach($this->until as $key => $until) {
+ if(is_array($until)) {
+ if(in_array($name, $until)) {
+ $this->until_payload[$key][] = array($name, $payload);
+ if(!isset($this->until_count[$key])) {
+ $this->until_count[$key] = 0;
+ }
+ $this->until_count[$key] += 1;
+ #$this->until[$key] = false;
+ }
+ }
+ }
+ }
+ /**
+ * Read from socket
+ */
+ public function read() {
+ $buff = @fread($this->socket, 1024);
+ if(!$buff) {
+ if($this->reconnect) {
+ $this->doReconnect();
+ } else {
+ fclose($this->socket);
+ return false;
+ }
+ }
+ $this->log->log("RECV: $buff", XMPPLog::LEVEL_VERBOSE);
+ xml_parse($this->parser, $buff, false);
+ }
+ /**
+ * Send to socket
+ *
+ * @param string $msg
+ */
+ public function send($msg, $timeout=NULL) {
+ if (is_null($timeout)) {
+ $secs = NULL;
+ $usecs = NULL;
+ } else if ($timeout == 0) {
+ $secs = 0;
+ $usecs = 0;
+ } else {
+ $maximum = $timeout * 1000000;
+ $usecs = $maximum % 1000000;
+ $secs = floor(($maximum - $usecs) / 1000000);
+ }
+
+ $read = array();
+ $write = array($this->socket);
+ $except = array();
+
+ $select = @stream_select($read, $write, $except, $secs, $usecs);
+
+ if($select === False) {
+ $this->log->log("ERROR sending message; reconnecting.");
+ $this->doReconnect();
+ # TODO: retry send here
+ return false;
+ } elseif ($select > 0) {
+ $this->log->log("Socket is ready; send it.", XMPPLog::LEVEL_VERBOSE);
+ } else {
+ $this->log->log("Socket is not ready; break.", XMPPLog::LEVEL_ERROR);
+ return false;
+ }
+
+ $sentbytes = @fwrite($this->socket, $msg);
+ $this->log->log("SENT: " . mb_substr($msg, 0, $sentbytes, '8bit'), XMPPLog::LEVEL_VERBOSE);
+ if($sentbytes === FALSE) {
+ $this->log->log("ERROR sending message; reconnecting.", XMPPLog::LEVEL_ERROR);
+ $this->doReconnect();
+ return false;
+ }
+ $this->log->log("Successfully sent $sentbytes bytes.", XMPPLog::LEVEL_VERBOSE);
+ return $sentbytes;
+ }
+ public function time() {
+ list($usec, $sec) = explode(" ", microtime());
+ return (float)$sec + (float)$usec;
+ }
+ /**
+ * Reset connection
+ */
+ public function reset() {
+ $this->xml_depth = 0;
+ unset($this->xmlobj);
+ $this->xmlobj = array();
+ $this->setupParser();
+ if(!$this->is_server) {
+ $this->send($this->stream_start);
+ }
+ $this->been_reset = true;
+ }
+ /**
+ * Setup the XML parser
+ */
+ public function setupParser() {
+ $this->parser = xml_parser_create('UTF-8');
+ xml_parser_set_option($this->parser, XML_OPTION_SKIP_WHITE, 1);
+ xml_parser_set_option($this->parser, XML_OPTION_TARGET_ENCODING, 'UTF-8');
+ xml_set_object($this->parser, $this);
+ xml_set_element_handler($this->parser, 'startXML', 'endXML');
+ xml_set_character_data_handler($this->parser, 'charXML');
+ }
+ public function readyToProcess() {
+ $read = array($this->socket);
+ $write = array();
+ $except = array();
+ $updated = @stream_select($read, $write, $except, 0);
+ return (($updated !== false) && ($updated > 0));
+ }
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-21 18:35:56 +0000