<?php
/**
* Jabber class
*
* @version $Id$
* @copyright 2006 Flyspray.org
* @notes: This lib has been created due to the lack of any good and modern jabber class out there
* @author: Florian Schmitz (floele)
*/
define('SECURITY_NONE', 0);
define('SECURITY_SSL', 1);
define('SECURITY_TLS', 2);
class Jabber
{
var $connection = null;
var $session = array();
var $resource = 'class.jabber2.php';
var $log = array();
var $log_enabled = true;
var $timeout = 10;
var $user = '';
var $password = '';
var $server = '';
var $features = array();
function Jabber($login, $password, $security = SECURITY_NONE, $port = 5222, $host = '')
{
// Can we use Jabber at all?
// Note: Maybe replace with SimpleXML in the future
if (!extension_loaded('xml')) {
$this->log('Error: No XML functions available, Jabber functions can not operate.');
return false;
}
//bug in php 5.2.1 renders this stuff more or less useless.
if ((version_compare(phpversion(), '5.2.1', '>=') && version_compare(phpversion(), '5.2.3RC2', '<')) && $security != SECURITY_NONE) {
$this->log('Error: PHP ' . phpversion() . ' + SSL is incompatible with jabber, see http://bugs.php.net/41236');
return false;
}
if (!Jabber::check_jid($login)) {
$this->log('Error: Jabber ID is not valid: ' . $login);
return false;
}
// Extract data from user@server.org
list($username, $server) = explode('@', $login);
// Decide whether or not to use encryption
if ($security == SECURITY_SSL && !Jabber::can_use_ssl() || $security == SECURITY_TLS && !Jabber::can_use_tls()) {
$security = SECURITY_NONE;
}
$this->session['security'] = $security;
$this->server = $server;
$this->user = $username;
$this->password = $password;
if ($this->open_socket( ($host != '') ? $host : $server, $port, $security == SECURITY_SSL)) {
$this->send("<?xml version='1.0' encoding='UTF-8' ?" . ">\n");
$this->send("<stream:stream to='{$server}' xmlns='jabber:client' xmlns:stream='http://etherx.jabber.org/streams' version='1.0'>\n");
} else {
return false;
}
// Now we listen what the server has to say...and give appropriate responses
$this->response($this->listen());
}
/**
* Sets the resource which is used. No validation is done here, only escaping.
* @param string $$name
* @access public
*/
function SetResource($name)
{
$this->resource = $name;
}
/**
* Send data to the Jabber server
* @param string $xml
* @access public
* @return bool
*/
function send($xml)
{
if ($this->connected()) {
$xml = trim($xml);
$this->log('SEND: '. $xml);
return fwrite($this->connection, $xml);
} else {
$this->log('Error: Could not send, connection lost (flood?).');
return false;
}
}
/**
* OpenSocket
* @param string $server host to connect to
* @param int $port port number
* @param bool $ssl use ssl or not
* @access public
* @return bool
*/
function open_socket($server, $port, $ssl = false)
{
if (function_exists("dns_get_record")) {
$record = dns_get_record("_xmpp-client._tcp.$server", DNS_SRV);
if (!empty($record)) {
$server = $record[0]['target'];
}
} else {
$this->log('Warning: dns_get_record function not found. gtalk will not work.');
}
$server = $ssl ? 'ssl://' . $server : $server;
if ($ssl) {
$this->session['ssl'] = true;
}
if ($this->connection = @fsockopen($server, $port, $errorno, $errorstr, $this->timeout)) {
socket_set_blocking($this->connection, 0);
socket_set_timeout($this->connection, 60);
return true;
}
// Apparently an error occured...
$this->log('Error: ' . $errorstr);
return false;
}
function log($msg)
{
if ($this->log_enabled) {
$this->log[] = $msg;
return true;
}
return false;
}
/**
* Listens to the connection until it gets data or the timeout is reached.
* Thus, it should only be called if data is expected to be received.
* @access public
* @return mixed either false for timeout or an array with the received data
*/
function listen($timeout = 10, $wait = false)
{
if (!$this->connected()) {
return false;
}
// Wait for a response until timeout is reached
$start = time();
$data = '';
do {
$read = trim(fread($this->connection, 4096));
$data .= $read;
} while (time() <= $start + $timeout && !feof($this->connection) && ($wait || $data == '' || $read != ''
|| (substr(rtrim($data), -1) != '>')));
if ($data != '') {
$this->log('RECV: '. $data);
return Jabber::xmlize($data);
} else {
$this->log('Timeout, no response from server.');
return false;
}
}
/**
* Initiates login (using data from contructor)
* @access public
* @return bool
*/
function login()
{
if (!count($this->features)) {
$this->log('Error: No feature information from server available.');
return false;
}
return $this->response($this->features);
}
/**
* Initiates account registration (based on data used for contructor)
* @access public
* @return bool
*/
function register()
{
if (!isset($this->session['id']) || isset($this->session['jid'])) {
$this->log('Error: Cannot initiate registration.');
return false;
}
$this->send("<iq type='get' id='reg_1'>
<query xmlns='jabber:iq:register'/>
</iq>");
return $this->response($this->listen());
}
/**
* Initiates account un-registration (based on data used for contructor)
* @access public
* @return bool
*/
function unregister()
{
if (!isset($this->session['id']) || !isset($this->session['jid'])) {
$this->log('Error: Cannot initiate un-registration.');
return false;
}
$this->send("<iq type='set' from='" . Jabber::jspecialchars($this->session['jid']) . "' id='unreg_1'>
<query xmlns='jabber:iq:register'>
<remove/>
</query>
</iq>");
return $this->response($this->listen(2)); // maybe we don't even get a response
}
/**
* Sets account presence. No additional info required (default is "online" status)
* @param $type dnd, away, chat, xa or nothing
* @param $message
* @param $unavailable set this to true if you want to become unavailable
* @access public
* @return bool
*/
function presence($type = '', $message = '', $unavailable = false)
{
if (!isset($this->session['jid'])) {
$this->log('Error: Cannot set presence at this point.');
return false;
}
if (in_array($type, array('dnd', 'away', 'chat', 'xa'))) {
$type = '<show>'. $type .'</show>';
} else {
$type = '';
}
$unavailable = ($unavailable) ? " type='unavailable'" : '';
$message = ($message) ? '<status>' . Jabber::jspecialchars($message) .'</status>' : '';
$this->session['sent_presence'] = !$unavailable;
return $this->send("<presence$unavailable>" .
$type .
$message .
'</presence>');
}
/**
* This handles all the different XML elements
* @param array $xml
* @access public
* @return bool
*/
function response($xml)
{
if (!is_array($xml) || !count($xml)) {
return false;
}
// did we get multiple elements? do one after another
// array('message' => ..., 'presence' => ...)
if (count($xml) > 1) {
foreach ($xml as $key => $value) {
$this->response(array($key => $value));
}
return;
} else
// or even multiple elements of the same type?
// array('message' => array(0 => ..., 1 => ...))
if (count(reset($xml)) > 1) {
foreach (reset($xml) as $value) {
$this->response(array(key($xml) => array(0 => $value)));
}
return;
}
switch (key($xml)) {
case 'stream:stream':
// Connection initialised (or after authentication). Not much to do here...
$this->session['id'] = $xml['stream:stream'][0]['@']['id'];
if (isset($xml['stream:stream'][0]['#']['stream:features'])) {
// we already got all info we need
$this->features = $xml['stream:stream'][0]['#'];
} else {
$this->features = $this->listen();
}
// go on with authentication?
if (isset($this->features['stream:features'][0]['#']['bind'])) {
return $this->response($this->features);
}
break;
case 'stream:features':
// Resource binding after successful authentication
if (isset($this->session['authenticated'])) {
// session required?
$this->session['sess_required'] = isset($xml['stream:features'][0]['#']['session']);
$this->send("<iq type='set' id='bind_1'>
<bind xmlns='urn:ietf:params:xml:ns:xmpp-bind'>
<resource>" . Jabber::jspecialchars($this->resource) . "</resource>
</bind>
</iq>");
return $this->response($this->listen());
}
// Let's use TLS if SSL is not enabled and we can actually use it
if ($this->session['security'] == SECURITY_TLS && isset($xml['stream:features'][0]['#']['starttls'])) {
$this->log('Switching to TLS.');
$this->send("<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'/>\n");
return $this->response($this->listen());
}
// Does the server support SASL authentication?
// I hope so, because we do (and no other method).
if (isset($xml['stream:features'][0]['#']['mechanisms'][0]['@']['xmlns']) &&
$xml['stream:features'][0]['#']['mechanisms'][0]['@']['xmlns'] == 'urn:ietf:params:xml:ns:xmpp-sasl') {
// Now decide on method
$methods = array();
foreach ($xml['stream:features'][0]['#']['mechanisms'][0]['#']['mechanism'] as $value) {
$methods[] = $value['#'];
}
// we prefer this one
if (in_array('DIGEST-MD5', $methods)) {
$this->send("<auth xmlns='urn:ietf:params:xml:ns:xmpp-sasl' mechanism='DIGEST-MD5'/>");
// we don't want to use this (neither does the server usually) if no encryption is in place
# http://www.xmpp.org/extensions/attic/jep-0078-1.7.html
# The plaintext mechanism SHOULD NOT be used unless the underlying stream is encrypted (using SSL or TLS)
# and the client has verified that the server certificate is signed by a trusted certificate authority.
} else if (in_array('PLAIN', $methods) && (isset($this->session['ssl']) || isset($this->session['tls']))) {
$this->send("<auth xmlns='urn:ietf:params:xml:ns:xmpp-sasl' mechanism='PLAIN'>"
. base64_encode(chr(0) . $this->user . '@' . $this->server . chr(0) . $this->password) .
"</auth>");
} else if (in_array('ANONYMOUS', $methods)) {
$this->send("<auth xmlns='urn:ietf:params:xml:ns:xmpp-sasl' mechanism='ANONYMOUS'/>");
// not good...
} else {
$this->log('Error: No authentication method supported.');
$this->disconnect();
return false;
}
return $this->response($this->listen());
} else {
// ok, this is it. bye.
$this->log('Error: Server does not offer SASL authentication.');
$this->disconnect();
return false;
}
break;
case 'challenge':
// continue with authentication...a challenge literally -_-
$decoded = base64_decode($xml['challenge'][0]['#']);
$decoded = Jabber::parse_data($decoded);
if (!isset($decoded['digest-uri'])) {
$decoded['digest-uri'] = 'xmpp/'. $this->server;
}
// better generate a cnonce, maybe it's needed
$str = '';
mt_srand((double)microtime()*10000000);
for ($i = 0; $i < 32; $i++) {
$str .= chr(mt_rand(0, 255));
}
$decoded['cnonce'] = base64_encode($str);
// second challenge?
if (isset($decoded['rspauth'])) {
$this->send("<response xmlns='urn:ietf:params:xml:ns:xmpp-sasl'/>");
} else {
$response = array('username' => $this->user,
'response' => $this->encrypt_password(array_merge($decoded, array('nc' => '00000001'))),
'charset' => 'utf-8',
'nc' => '00000001');
foreach (array('nonce', 'qop', 'digest-uri', 'realm', 'cnonce') as $key) {
if (isset($decoded[$key])) {
$response[$key] = $decoded[$key];
}
}
$this->send("<response xmlns='urn:ietf:params:xml:ns:xmpp-sasl'>" .
base64_encode(Jabber::implode_data($response))
. "</response>");
}
return $this->response($this->listen());
case 'failure':
$this->log('Error: Server sent "failure".');
$this->disconnect();
return false;
case 'proceed':
// continue switching to TLS
$meta = stream_get_meta_data($this->connection);
socket_set_blocking($this->connection, 1);
if (!stream_socket_enable_crypto($this->connection, true, STREAM_CRYPTO_METHOD_TLS_CLIENT)) {
$this->log('Error: TLS mode change failed.');
return false;
}
socket_set_blocking($this->connection, $meta['blocked']);
$this->session['tls'] = true;
// new stream
$this->send("<?xml version='1.0' encoding='UTF-8' ?" . ">\n");
$this->send("<stream:stream to='{$this->server}' xmlns='jabber:client' xmlns:stream='http://etherx.jabber.org/streams' version='1.0'>\n");
return $this->response($this->listen());
case 'success':
// Yay, authentication successful.
$this->send("<stream:stream to='{$this->server}' xmlns='jabber:client' xmlns:stream='http://etherx.jabber.org/streams' version='1.0'>\n");
$this->session['authenticated'] = true;
return $this->response($this->listen()); // we have to wait for another response
case 'iq':
// we are not interested in IQs we did not expect
if (!isset($xml['iq'][0]['@']['id'])) {
return false;
}
// multiple possibilities here
switch ($xml['iq'][0]['@']['id'])
{
case 'bind_1':
$this->session['jid'] = $xml['iq'][0]['#']['bind'][0]['#']['jid'][0]['#'];
// and (maybe) yet another request to be able to send messages *finally*
if ($this->session['sess_required']) {
$this->send("<iq to='{$this->server}'
type='set'
id='sess_1'>
<session xmlns='urn:ietf:params:xml:ns:xmpp-session'/>
</iq>");
return $this->response($this->listen());
}
return true;
case 'sess_1':
return true;
case 'reg_1':
$this->send("<iq type='set' id='reg_2'>
<query xmlns='jabber:iq:register'>
<username>" . Jabber::jspecialchars($this->user) . "</username>
<password>" . Jabber::jspecialchars($this->password) . "</password>
</query>
</iq>");
return $this->response($this->listen());
case 'reg_2':
// registration end
if (isset($xml['iq'][0]['#']['error'])) {
$this->log('Warning: Registration failed.');
return false;
}
return true;
case 'unreg_1':
return true;
default:
$this->log('Notice: Received unexpected IQ.');
return false;
}
break;
case 'message':
// we are only interested in content...
if (!isset($xml['message'][0]['#']['body'])) {
return false;
}
$message['body'] = $xml['message'][0]['#']['body'][0]['#'];
$message['from'] = $xml['message'][0]['@']['from'];
if (isset($xml['message'][0]['#']['subject'])) {
$message['subject'] = $xml['message'][0]['#']['subject'][0]['#'];
}
$this->session['messages'][] = $message;
break;
default:
// hm...don't know this response
$this->log('Notice: Unknown server response (' . key($xml) . ')');
return false;
}
}
function send_message($to, $text, $subject = '', $type = 'normal')
{
if (!isset($this->session['jid'])) {
return false;
}
if (!in_array($type, array('chat', 'normal', 'error', 'groupchat', 'headline'))) {
$type = 'normal';
}
return $this->send("<message from='" . Jabber::jspecialchars($this->session['jid']) . "'
to='" . Jabber::jspecialchars($to) . "'
type='$type'
id='" . uniqid('msg') . "'>
<subject>" . Jabber::jspecialchars($subject) . "</subject>
<body>" . Jabber::jspecialchars($text) . "</body>
</message>");
}
function get_messages($waitfor = 3)
{
if (!isset($this->session['sent_presence']) || !$this->session['sent_presence']) {
$this->presence();
}
if ($waitfor > 0) {
$this->response($this->listen($waitfor, $wait = true)); // let's see if any messages fly in
}
return isset($this->session['messages']) ? $this->session['messages'] : array();
}
function connected()
{
return is_resource($this->connection) && !feof($this->connection);
}
function disconnect()
{
if ($this->connected()) {
// disconnect gracefully
if (isset($this->session['sent_presence'])) {
$this->presence('', 'offline', $unavailable = true);
}
$this->send('</stream:stream>');
$this->session = array();
return fclose($this->connection);
}
return false;
}
function can_use_ssl()
{
return extension_loaded('openssl');
}
function can_use_tls()
{
return Jabber::can_use_ssl() && function_exists('stream_socket_enable_crypto');
}
/**
* Encrypts a password as in RFC 2831
* @param array $data Needs data from the client-server connection
* @access public
* @return string
*/
function encrypt_password($data)
{
// let's me think about <challenge> again...
foreach (array('realm', 'cnonce', 'digest-uri') as $key) {
if (!isset($data[$key])) {
$data[$key] = '';
}
}
$pack = md5($this->user . ':' . $data['realm'] . ':' . $this->password);
if (isset($data['authzid'])) {
$a1 = pack('H32', $pack) . sprintf(':%s:%s:%s', $data['nonce'], $data['cnonce'], $data['authzid']);
} else {
$a1 = pack('H32', $pack) . sprintf(':%s:%s', $data['nonce'], $data['cnonce']);
}
// should be: qop = auth
$a2 = 'AUTHENTICATE:'. $data['digest-uri'];
return md5(sprintf('%s:%s:%s:%s:%s:%s', md5($a1), $data['nonce'], $data['nc'], $data['cnonce'], $data['qop'], md5($a2)));
}
/**
* parse_data like a="b",c="d",...
* @param string $data
* @access public
* @return array a => b ...
*/
function parse_data($data)
{
// super basic, but should suffice
$data = explode(',', $data);
$pairs = array();
foreach ($data as $pair) {
$dd = strpos($pair, '=');
if ($dd) {
$pairs[substr($pair, 0, $dd)] = trim(substr($pair, $dd + 1), '"');
}
}
return $pairs;
}
/**
* opposite of Jabber::parse_data()
* @param array $data
* @access public
* @return string
*/
function implode_data($data)
{
$return = array();
foreach ($data as $key => $value) {
$return[] = $key . '="' . $value . '"';
}
return implode(',', $return);
}
/**
* Checks whether or not a Jabber ID is valid (FS#1131)
* @param string $jid
* @access public
* @return string
*/
function check_jid($jid)
{
$i = strpos($jid, '@');
if ($i === false) {
return false;
}
$username = substr($jid, 0, $i);
$realm = substr($jid, $i + 1);
if (strlen($username) == 0 || strlen($realm) < 3) {
return false;
}
$arr = explode('.', $realm);
if (count($arr) == 0) {
return false;
}
foreach ($arr as $part)
{
if (substr($part, 0, 1) == '-' || substr($part, -1, 1) == '-') {
return false;
}
if (preg_match("@^[a-zA-Z0-9-.]+$@", $part) == false) {
return false;
}
}
$b = array(array(0, 127), array(192, 223), array(224, 239),
array(240, 247), array(248, 251), array(252, 253));
// Prohibited Characters RFC3454 + RFC3920
$p = array(
// Table C.1.1
array(0x0020, 0x0020), // SPACE
// Table C.1.2
array(0x00A0, 0x00A0), // NO-BREAK SPACE
array(0x1680, 0x1680), // OGHAM SPACE MARK
array(0x2000, 0x2001), // EN QUAD
array(0x2001, 0x2001), // EM QUAD
array(0x2002, 0x2002), // EN SPACE
array(0x2003, 0x2003), // EM SPACE
array(0x2004, 0x2004), // THREE-PER-EM SPACE
array(0x2005, 0x2005), // FOUR-PER-EM SPACE
array(0x2006, 0x2006), // SIX-PER-EM SPACE
array(0x2007, 0x2007), // FIGURE SPACE
array(0x2008, 0x2008), // PUNCTUATION SPACE
array(0x2009, 0x2009), // THIN SPACE
array(0x200A, 0x200A), // HAIR SPACE
array(0x200B, 0x200B), // ZERO WIDTH SPACE
array(0x202F, 0x202F), // NARROW NO-BREAK SPACE
array(0x205F, 0x205F), // MEDIUM MATHEMATICAL SPACE
array(0x3000, 0x3000), // IDEOGRAPHIC SPACE
// Table C.2.1
array(0x0000, 0x001F), // [CONTROL CHARACTERS]
array(0x007F, 0x007F), // DELETE
// Table C.2.2
array(0x0080, 0x009F), // [CONTROL CHARACTERS]
array(0x06DD, 0x06DD), // ARABIC END OF AYAH
array(0x070F, 0x070F), // SYRIAC ABBREVIATION MARK
array(0x180E, 0x180E), // MONGOLIAN VOWEL SEPARATOR
array(0x200C, 0x200C), // ZERO WIDTH NON-JOINER
array(0x200D, 0x200D), // ZERO WIDTH JOINER
array(0x2028, 0x2028), // LINE SEPARATOR
array(0x2029, 0x2029), // PARAGRAPH SEPARATOR
array(0x2060, 0x2060), // WORD JOINER
array(0x2061, 0x2061), // FUNCTION APPLICATION
array(0x2062, 0x2062), // INVISIBLE TIMES
array(0x2063, 0x2063), // INVISIBLE SEPARATOR
array(0x206A, 0x206F), // [CONTROL CHARACTERS]
array(0xFEFF, 0xFEFF), // ZERO WIDTH NO-BREAK SPACE
array(0xFFF9, 0xFFFC), // [CONTROL CHARACTERS]
array(0x1D173, 0x1D17A), // [MUSICAL CONTROL CHARACTERS]
// Table C.3
array(0xE000, 0xF8FF), // [PRIVATE USE, PLANE 0]
array(0xF0000, 0xFFFFD), // [PRIVATE USE, PLANE 15]
array(0x100000, 0x10FFFD), // [PRIVATE USE, PLANE 16]
// Table C.4
array(0xFDD0, 0xFDEF), // [NONCHARACTER CODE POINTS]
array(0xFFFE, 0xFFFF), // [NONCHARACTER CODE POINTS]
array(0x1FFFE, 0x1FFFF), // [NONCHARACTER CODE POINTS]
array(0x2FFFE, 0x2FFFF), // [NONCHARACTER CODE POINTS]
array(0x3FFFE, 0x3FFFF), // [NONCHARACTER CODE POINTS]
array(0x4FFFE, 0x4FFFF), // [NONCHARACTER CODE POINTS]
array(0x5FFFE, 0x5FFFF), // [NONCHARACTER CODE POINTS]
array(0x6FFFE, 0x6FFFF), // [NONCHARACTER CODE POINTS]
array(0x7FFFE, 0x7FFFF), // [NONCHARACTER CODE POINTS]
array(0x8FFFE, 0x8FFFF), // [NONCHARACTER CODE POINTS]
array(0x9FFFE, 0x9FFFF), // [NONCHARACTER CODE POINTS]
array(0xAFFFE, 0xAFFFF), // [NONCHARACTER CODE POINTS]
array(0xBFFFE, 0xBFFFF), // [NONCHARACTER CODE POINTS]
array(0xCFFFE, 0xCFFFF), // [NONCHARACTER CODE POINTS]
array(0xDFFFE, 0xDFFFF), // [NONCHARACTER CODE POINTS]
array(0xEFFFE, 0xEFFFF), // [NONCHARACTER CODE POINTS]
array(0xFFFFE, 0xFFFFF), // [NONCHARACTER CODE POINTS]
array(0x10FFFE, 0x10FFFF), // [NONCHARACTER CODE POINTS]
// Table C.5
array(0xD800, 0xDFFF), // [SURROGATE CODES]
// Table C.6
array(0xFFF9, 0xFFF9), // INTERLINEAR ANNOTATION ANCHOR
array(0xFFFA, 0xFFFA), // INTERLINEAR ANNOTATION SEPARATOR
array(0xFFFB, 0xFFFB), // INTERLINEAR ANNOTATION TERMINATOR
array(0xFFFC, 0xFFFC), // OBJECT REPLACEMENT CHARACTER
array(0xFFFD, 0xFFFD), // REPLACEMENT CHARACTER
// Table C.7
array(0x2FF0, 0x2FFB), // [IDEOGRAPHIC DESCRIPTION CHARACTERS]
// Table C.8
array(0x0340, 0x0340), // COMBINING GRAVE TONE MARK
array(0x0341, 0x0341), // COMBINING ACUTE TONE MARK
array(0x200E, 0x200E), // LEFT-TO-RIGHT MARK
array(0x200F, 0x200F), // RIGHT-TO-LEFT MARK
array(0x202A, 0x202A), // LEFT-TO-RIGHT EMBEDDING
array(0x202B, 0x202B), // RIGHT-TO-LEFT EMBEDDING
array(0x202C, 0x202C), // POP DIRECTIONAL FORMATTING
array(0x202D, 0x202D), // LEFT-TO-RIGHT OVERRIDE
array(0x202E, 0x202E), // RIGHT-TO-LEFT OVERRIDE
array(0x206A, 0x206A), // INHIBIT SYMMETRIC SWAPPING
array(0x206B, 0x206B), // ACTIVATE SYMMETRIC SWAPPING
array(0x206C, 0x206C), // INHIBIT ARABIC FORM SHAPING
array(0x206D, 0x206D), // ACTIVATE ARABIC FORM SHAPING
array(0x206E, 0x206E), // NATIONAL DIGIT SHAPES
array(0x206F, 0x206F), // NOMINAL DIGIT SHAPES
// Table C.9
array(0xE0001, 0xE0001), // LANGUAGE TAG
array(0xE0020, 0xE007F), // [TAGGING CHARACTERS]
// RFC3920
array(0x22, 0x22), // "
array(0x26, 0x26), // &
array(0x27, 0x27), // '
array(0x2F, 0x2F), // /
array(0x3A, 0x3A), // :
array(0x3C, 0x3C), // <
array(0x3E, 0x3E), // >
array(0x40, 0x40) // @
);
$pos = 0;
$result = true;
while ($pos < strlen($username))
{
$len = 0;
$uni = 0;
for ($i = 0; $i <= 5; $i++)
{
if (ord($username[$pos]) >= $b[$i][0] && ord($username[$pos]) <= $b[$i][1])
{
$len = $i + 1;
$uni = (ord($username[$pos]) - $b[$i][0]) * pow(2, $i * 6);
for ($k = 1; $k < $len; $k++) {
$uni += (ord($username[$pos + $k]) - 128) * pow(2, ($i - $k) * 6);
}
break;
}
}
if ($len == 0) {
return false;
}
foreach ($p as $pval)
{
if ($uni >= $pval[0] && $uni <= $pval[1]) {
$result = false;
break 2;
}
}
$pos = $pos + $len;
}
return $result;
}
function jspecialchars($data)
{
return htmlspecialchars($data, ENT_QUOTES, 'utf-8');
}
// ======================================================================
// Third party code, taken from old jabber lib (the only usable code left)
// ======================================================================
// xmlize()
// (c) Hans Anderson / http://www.hansanderson.com/php/xml/
function xmlize($data, $WHITE=1, $encoding='UTF-8') {
$data = trim($data);
if (substr($data, 0, 5) != '<?xml') {
$data = '<root>'. $data . '</root>'; // mod
}
$vals = $array = array();
$parser = xml_parser_create($encoding);
xml_parser_set_option($parser, XML_OPTION_CASE_FOLDING, 0);
xml_parser_set_option($parser, XML_OPTION_SKIP_WHITE, $WHITE);
xml_parse_into_struct($parser, $data, $vals);
xml_parser_free($parser);
$i = 0;
$tagname = $vals[$i]['tag'];
if ( isset ($vals[$i]['attributes'] ) )
{
$array[$tagname][0]['@'] = $vals[$i]['attributes']; // mod
} else {
$array[$tagname][0]['@'] = array(); // mod
}
$array[$tagname][0]["#"] = Jabber::_xml_depth($vals, $i); // mod
if (substr($data, 0, 5) != '<?xml') {
$array = $array['root'][0]['#']; // mod
}
return $array;
}
// _xml_depth()
// (c) Hans Anderson / http://www.hansanderson.com/php/xml/
function _xml_depth($vals, &$i) {
$children = array();
if ( isset($vals[$i]['value']) )
{
array_push($children, $vals[$i]['value']);
}
while (++$i < count($vals)) {
switch ($vals[$i]['type']) {
case 'open':
if ( isset ( $vals[$i]['tag'] ) )
{
$tagname = $vals[$i]['tag'];
} else {
$tagname = '';
}
if ( isset ( $children[$tagname] ) )
{
$size = sizeof($children[$tagname]);
} else {
$size = 0;
}
if ( isset ( $vals[$i]['attributes'] ) ) {
$children[$tagname][$size]['@'] = $vals[$i]["attributes"];
}
$children[$tagname][$size]['#'] = Jabber::_xml_depth($vals, $i);
break;
case 'cdata':
array_push($children, $vals[$i]['value']);
break;
case 'complete':
$tagname = $vals[$i]['tag'];
if( isset ($children[$tagname]) )
{
$size = sizeof($children[$tagname]);
} else {
$size = 0;
}
if( isset ( $vals[$i]['value'] ) )
{
$children[$tagname][$size]["#"] = $vals[$i]['value'];
} else {
$children[$tagname][$size]["#"] = array();
}
if ( isset ($vals[$i]['attributes']) ) {
$children[$tagname][$size]['@']
= $vals[$i]['attributes'];
}
break;
case 'close':
return $children;
break;
}
}
return $children;
}
}
?>