| 1 | <? |
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| 2 | |
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| 3 | /********************************************************************** |
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| 4 | * XMPP PubSub for DAViCal |
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| 5 | * Copyright 2009 Rob Ostensen rob@boxacle.net |
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| 6 | * Licenced http://gnu.org/copyleft/gpl.html GNU GPL v2 |
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| 7 | * |
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| 8 | *********************************************************************/ |
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| 9 | |
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| 10 | |
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| 11 | class xmpp |
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| 12 | { |
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| 13 | private $connection,$streamTagBegin,$streamTagEnd,$mesgcount=0,$ready,$moredata=false,$username,$stream,$xmlparser,$xquery; |
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| 14 | private $namespaces = Array(); |
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| 15 | private $recvTags = Array(); |
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| 16 | private $recvHandlers = Array(); |
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| 17 | private $sendHandlers = Array(); |
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| 18 | private $finishedCommands = Array(); |
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| 19 | private $sendQueue = Array(); |
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| 20 | private $recvQueue = ''; |
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| 21 | private $pubsubNext = Array(); |
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| 22 | private $depth = 0,$processDepth=0; |
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| 23 | public $server,$port,$jid,$resource,$password,$tls,$idle,$status,$pubsubLayout='hometree'; |
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| 24 | |
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| 25 | // constructor |
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| 26 | public function __construct ( ) |
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| 27 | { |
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| 28 | $this->status = "online"; |
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| 29 | $this->setupXmlParser (); |
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| 30 | } |
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| 31 | |
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| 32 | // figure out what server to connect to and make the connection, returns true if successful, false otherwise |
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| 33 | private function connect () |
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| 34 | { |
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| 35 | if ( ! isset ( $this->jid ) ) |
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| 36 | return $this->connection = false; |
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| 37 | if ( ! isset ( $this->idle ) ) |
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| 38 | $this->idle = true; |
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| 39 | if ( ! isset ( $this->resource ) ) |
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| 40 | $this->resource = 'caldav' . getmypid(); |
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| 41 | if ( ! preg_match ( '/^\//', $this->resource ) ) |
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| 42 | $this->resource = '/' . $this->resource; |
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| 43 | $temp = explode ( '@', $this->jid ); |
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| 44 | $this->username = $temp[0]; |
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| 45 | if ( ! isset ( $this->server ) ) |
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| 46 | { |
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| 47 | $this->server = $temp[1]; |
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| 48 | } |
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| 49 | $r = dns_get_record("_xmpp-client._tcp.". $this->server , DNS_SRV); |
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| 50 | if ( 0 < count ( $r ) ) |
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| 51 | { |
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| 52 | $this->original_server = $this->server; |
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| 53 | $this->server = $r[0]['target']; |
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| 54 | $this->original_port = $this->port; |
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| 55 | $this->port = $r[0]['port']; |
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| 56 | } |
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| 57 | if ( ! isset ( $this->port ) ) |
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| 58 | $this->port = 5222; |
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| 59 | if ( 'ssl' == $this->tls || ( ! isset ( $this->tls ) && 5223 == $this->port ) ) |
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| 60 | $url = 'ssl://' . $this->server; |
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| 61 | elseif ( 'tls' == $this->tls || ( ! isset ( $this->tls ) && 5222 == $this->port ) ) |
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| 62 | $url = 'tcp://' . $this->server; |
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| 63 | else |
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| 64 | $url = 'tcp://' . $this->server; |
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| 65 | if ( isset ( $this->original_server ) ) |
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| 66 | $this->server = $this->original_server; |
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| 67 | $this->connection = stream_socket_client ( $url . ':' . $this->port, $errno, $errstring, 10, STREAM_CLIENT_ASYNC_CONNECT ); |
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| 68 | if ( false === $this->connection ) |
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| 69 | { |
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| 70 | if ( $errno != 0 ) |
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| 71 | $log = $errstring; |
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| 72 | return false; |
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| 73 | } |
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| 74 | $this->initializeQueue ( ); |
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| 75 | socket_set_blocking ( $this->connection, false ); |
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| 76 | return true; |
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| 77 | } |
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| 78 | |
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| 79 | // handles the features tag, mostly related to authentication |
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| 80 | private function handleFeatures ( &$node ) |
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| 81 | { |
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| 82 | if ( $this->debug ) $this->log ( 'handling features' ); |
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| 83 | if ( 'STARTTLS' == $node->firstChild->nodeName ) |
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| 84 | { |
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| 85 | $this->sendQueue[] = "<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'/>"; |
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| 86 | return; |
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| 87 | } |
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| 88 | $elements = $this->query ( '*/MECHANISM', $node ); |
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| 89 | if ( ! is_null ( $elements ) && $elements !== false ) |
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| 90 | { |
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| 91 | if ( $this->debug ) $this->log ( " found " . $elements->length . " matching MECHANISM nodes "); |
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| 92 | $auth_mech = array (); |
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| 93 | foreach ( $elements as $e ) |
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| 94 | $auth_mech[] = $e->nodeValue; |
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| 95 | if ( in_array ( 'PLAIN', $auth_mech ) ) |
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| 96 | $this->sendQueue[] = "<auth xmlns='urn:ietf:params:xml:ns:xmpp-sasl' mechanism='PLAIN'>" . base64_encode("\x00" . preg_replace('/@.*$/','',$this->jid) . "\x00" . $this->password) . "</auth>"; |
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| 97 | elseif ( in_array ( 'DIGEST-MD5', $auth_mech ) ) // this code and the associated function are UNTESTED |
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| 98 | { |
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| 99 | $this->sendQueue[] = "<auth xmlns='urn:ietf:params:xml:ns:xmpp-sasl' mechanism='DIGEST-MD5'/>"; |
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| 100 | $this->recvHandlers['challenge'] = 'digestAuth' ; |
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| 101 | } |
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| 102 | $this->recvHandlers['success'] = 'handleSuccess' ; |
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| 103 | } |
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| 104 | $elements = $this->query ( '*/BIND', $node ); |
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| 105 | if ( ! is_null ( $elements ) && $elements->length > 0 ) |
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| 106 | { |
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| 107 | // failure if we don't hit this, not sure how we can detect that failure yet. |
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| 108 | if ( $this->debug ) $this->log ( " found " . $elements->length . " matching BIND nodes "); |
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| 109 | $this->ready = true; |
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| 110 | } |
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| 111 | } |
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| 112 | |
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| 113 | // handle proceed tag/enable tls |
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| 114 | private function enableTLS ( $node ) |
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| 115 | { |
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| 116 | stream_set_blocking ( $this->connection, true ); |
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| 117 | stream_socket_enable_crypto ( $this->connection, true, STREAM_CRYPTO_METHOD_TLS_CLIENT ); |
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| 118 | stream_set_blocking ( $this->connection, false ); |
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| 119 | $this->sendQueue[] = "<"."?xml version=\"1.0\"?".">\n\n<stream:stream to='" . $this->server . "' xmlns:stream='http://etherx.jabber.org/streams' xmlns='jabber:client' version='1.0'>"; |
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| 120 | } |
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| 121 | |
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| 122 | // do digest auth |
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| 123 | private function digestAuth ( &$node ) |
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| 124 | { |
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| 125 | // this code is based solely on the description found @ http://web.archive.org/web/20050224191820/http://cataclysm.cx/wip/digest-md5-crash.html |
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| 126 | // UNTESTED please shoot me an email if you get this to work !! |
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| 127 | $contents = $node->nodeValue; |
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| 128 | if ( ! is_null ( $elements ) ) |
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| 129 | { |
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| 130 | $challlenge = array (); |
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| 131 | $parts = explode ( ',', base64_decode ( $contents ) ); |
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| 132 | foreach ( $parts as $text ) |
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| 133 | { |
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| 134 | $temp = explode ( '=', $text ); |
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| 135 | $challenge[$temp[0]] = $temp[1]; |
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| 136 | } |
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| 137 | if ( $challenge['realm'] == $this->server ) // might fail need to handle a response with multiple realms |
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| 138 | { |
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| 139 | $cnonce = md5((mt_rand() * time() / mt_rand())+$challenge['nonce']); |
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| 140 | $X = md5 ( preg_replace('/@.*$/','',$this->jid) . ':' . $this->server . ':' . $this->password, true ); |
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| 141 | $HA1 = md5 ( $X . ':' . $challenge['nonce'] . ':' . $cnonce . ':' . $this->jid . $this->resource ); |
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| 142 | $HA2 = md5 ( "AUTHENTICATE:xmpp/" . $this->server ); |
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| 143 | $resp = md5 ( $HA1 . ':' . $challenge['nonce'] . ':00000001:' . $cnonce . ':auth' . $HA2 ); |
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| 144 | $this->sendQueue[] = "<response xmlns='urn:ietf:params:xml:ns:xmpp-sasl'>" . |
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| 145 | base64_encode("username=\"" . preg_replace('/@.*$/','',$this->jid) . "\"," . |
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| 146 | "realm=\"" . $this->server . "\",nonce=\"" . $challenge['nonce'] . "\",cnonce=\"". $cnonce . "\"," . |
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| 147 | "nc=00000001,qop=auth,digest-uri=\"xmpp/" . $this->server . "\",response=" . $resp . |
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| 148 | ",charset=utf-8,authzid=\"". $this->jid . $this->resource . "\"" ) . "</response>" // note the PID component to the resource, just incase |
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| 149 | ; |
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| 150 | } |
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| 151 | elseif ( $challenge['rspauth'] ) |
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| 152 | $this->sendQueue[] = "<response xmlns='urn:ietf:params:xml:ns:xmpp-sasl'/>" ; |
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| 153 | } |
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| 154 | } |
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| 155 | |
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| 156 | // do basic setup to get the connection logged in and going |
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| 157 | private function handleSuccess ( &$node ) |
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| 158 | { |
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| 159 | $this->loggedIn = true; |
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| 160 | $this->sendQueue[] = "<"."?xml version=\"1.0\"?".">\n\n<stream:stream to='" . $this->server . "' xmlns:stream='http://etherx.jabber.org/streams' xmlns='jabber:client' version='1.0'>"; |
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| 161 | $this->sendQueue[] = "<iq xmlns='jabber:client' type='set' id='1'><bind xmlns='urn:ietf:params:xml:ns:xmpp-bind'><resource>" . preg_replace('/^\//','',$this->resource) . "</resource></bind></iq>"; |
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| 162 | $this->recvHandlers['stream:error'] = 'handleError' ; |
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| 163 | $this->recvHandlers['iq'] = 'handleIq' ; |
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| 164 | $this->recvHandlers['message'] = 'handleMessage' ; |
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| 165 | $this->mesgcount = 1; |
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| 166 | } |
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| 167 | |
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| 168 | // do something with standard iq messages also does some standard setup like setting presence |
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| 169 | private function handleIq ( &$node ) |
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| 170 | { |
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| 171 | if ( $this->debug ) $this->log ( "Handle IQ id:" . $node->getAttribute ( 'id' ) . ' type:' . $node->getAttribute ( 'type' ) . ""); |
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| 172 | if ( $node->getAttribute ( 'type' ) == 'result' || $node->getAttribute ( 'type' ) == 'error' ) |
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| 173 | { |
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| 174 | $commandId = $node->getAttribute ( 'id' ); |
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| 175 | $this->command[$commandId] = true; |
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| 176 | if ( isset ( $this->handleCommand[$commandId] ) ) |
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| 177 | { |
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| 178 | $this->finishedCommands[$commandId] = true; |
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| 179 | if ( method_exists ( $this, $this->handleCommand[$commandId] ) ) |
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| 180 | call_user_func_array ( array ( $this, $this->handleCommand[$commandId] ), array ( &$node ) ); |
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| 181 | else |
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| 182 | call_user_func_array ( $this->handleCommand[$commandId], array ( &$node ) ); |
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| 183 | } |
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| 184 | } |
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| 185 | if ( $node->getAttribute ( 'id' ) == $this->mesgcount && $this->mesgcount < 3 ) |
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| 186 | { |
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| 187 | $this->sendQueue[] = "<iq xmlns='jabber:client' type='set' id='" . ( $this->mesgcount++ ) . "'><session xmlns='urn:ietf:params:xml:ns:xmpp-session'/></iq>"; |
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| 188 | $this->sendQueue[] = "<iq xmlns='jabber:client' type='get' id='" . ( $this->mesgcount++ ) . "'><query xmlns='jabber:iq:roster' /></iq>"; |
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| 189 | } |
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| 190 | if ( $node->getAttribute ( 'id' ) == '2' && $this->command['2'] == true ) |
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| 191 | { |
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| 192 | $this->nextreply = $this->mesgcount++; |
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| 193 | $this->sendQueue[] = "<presence id='" . $this->nextreply . "' ><status>" . $this->status . '</status></presence>'; |
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| 194 | $this->ready = true; |
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| 195 | } |
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| 196 | } |
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| 197 | |
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| 198 | // do something with standard messages |
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| 199 | private function handleMessage ( &$node ) |
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| 200 | { |
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| 201 | if ( $node->getAttribute ( 'type' ) == 'chat' ) |
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| 202 | { |
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| 203 | $this->command[$node->getAttribute ( 'id' )] = true; |
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| 204 | $elements = $this->query ( '//*/body', $node ); |
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| 205 | if ( 0 < $elements->length ) |
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| 206 | { |
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| 207 | $temp = $elements->items(0); |
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| 208 | if ( $this->debug ) $this->log ( "received message " . $temp->nodeValue ); |
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| 209 | } |
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| 210 | } |
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| 211 | } |
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| 212 | |
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| 213 | // handle stream errors by logging a message and closing the connection |
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| 214 | private function handleError ( &$node ) |
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| 215 | { |
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| 216 | $this->log ( 'STREAM ERROR OCCURRED! XMPP closing connection, this is probably a bug' ); |
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| 217 | $this->idle = false; |
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| 218 | $this->close (); |
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| 219 | } |
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| 220 | |
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| 221 | // disco a pubsub collection |
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| 222 | private function disco ( $to, $type, $name ) |
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| 223 | { |
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| 224 | $msg = $this->mesgcount++; |
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| 225 | $send = "<iq type='get' from='" . $this->jid . $this->resource . "' to='$to' id='" . $msg . "'>"; |
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| 226 | $send .= " <query xmlns='http://jabber.org/protocol/disco#$type' node='$name'/>"; |
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| 227 | $send .= "</iq>"; |
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| 228 | $this->handleCommand[$msg] = 'discoResult'; |
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| 229 | $this->sendQueue[] = $send; |
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| 230 | $this->go(); |
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| 231 | } |
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| 232 | |
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| 233 | // result from disco |
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| 234 | private function discoResult ( &$node ) |
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| 235 | { |
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| 236 | if ( $this->debug ) $this->log ( $node->ownerDocument->saveXML($node) ); |
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| 237 | $id = $node->getAttribute ( 'id' ); |
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| 238 | $identity = $this->query ( '*/IDENTITY', $node ); |
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| 239 | if ( @is_array ( $this->pubsub [ 'create' ] [ $id ] ) && 0 == $identity->length ) |
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| 240 | { |
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| 241 | $this->pubsubCreateNode( $this->pubsub [ 'create' ] [ $id ] [ 0 ], |
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| 242 | $this->pubsub [ 'create' ] [ $id ] [ 1 ], |
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| 243 | $this->pubsub [ 'create' ] [ $id ] [ 2 ], |
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| 244 | $this->pubsub [ 'create' ] [ $id ] [ 3 ] ); |
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| 245 | } |
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| 246 | } |
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| 247 | |
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| 248 | // send a message to a jid |
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| 249 | public function sendMessage ( $to, $message ) |
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| 250 | { |
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| 251 | $msg = $this->mesgcount++; |
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| 252 | $out .= "<message id='" . $msg . "' from='" . $this->jid . $this->resource . "' to='" . $to. "' >"; |
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| 253 | $out .= "<body>" . $message . "</body></message>"; |
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| 254 | $this->sendQueue[] = $out; |
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| 255 | $this->go(); |
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| 256 | } |
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| 257 | |
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| 258 | // get a pubsub collection/leaf node and create if it doesn't exist |
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| 259 | public function pubsubCreate ( $to, $type, $name, $configure = null ) |
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| 260 | { |
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| 261 | if ( 1 > strlen ( $to ) ) |
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| 262 | $to = 'pubsub.' . $this->server; |
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| 263 | if ( 1 > strlen ( $type ) ) |
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| 264 | $type = 'set'; |
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| 265 | if ( 'hometree' == $this->pubsubLayout ) |
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| 266 | $node = '/home/' . $this->server . '/' . $this->username . $name; |
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| 267 | else |
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| 268 | $node= $name; |
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| 269 | $this->pubsub['create'][$this->mesgcount+1] = array ( $to, $type, $name, $configure ); |
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| 270 | $this->disco ( $to, 'info', $node ); |
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| 271 | } |
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| 272 | |
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| 273 | // create a pubsub collection/leaf node |
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| 274 | private function pubsubCreateNode ( $to, $type, $name, $configure = null ) |
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| 275 | { |
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| 276 | if ( 'hometree' == $this->pubsubLayout ) |
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| 277 | $node = '/home/' . $this->server . '/' . $this->username . $name; |
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| 278 | else |
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| 279 | $node= $name; |
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| 280 | $msg = $this->mesgcount++; |
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| 281 | $out = '<iq from="' . $this->jid . $this->resource . '" to="' . $to . '" type="' . $type . '" id="' . $msg . '">'; |
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| 282 | $out .= '<pubsub xmlns="http://jabber.org/protocol/pubsub" ><create node="' . $node . '"/>'; |
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| 283 | if ( $configure ) |
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| 284 | $out .= '<configure>' . $configure .' </configure>'; |
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| 285 | else |
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| 286 | $out .= '<configure/>'; |
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| 287 | $out .= '</pubsub>'; |
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| 288 | $out .= '</iq>'; |
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| 289 | $this->sendQueue[] = $out; |
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| 290 | $this->handleCommand[ $msg ] = 'pubsubResult'; |
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| 291 | $this->go(); |
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| 292 | } |
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| 293 | |
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| 294 | // configure a pubsub collection or leaf |
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| 295 | public function pubsubConfig ( $to, $type, $name ) |
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| 296 | { |
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| 297 | if ( 'hometree' == $this->pubsubLayout ) |
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| 298 | $node = '/home/' . $this->server . '/' . $this->username . $name; |
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| 299 | else |
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| 300 | $node= $name; |
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| 301 | $msg = $this->mesgcount++; |
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| 302 | $out = '<iq from="' . $this->jid . $this->resource . '" to="' . $to . '" type="get" id="' . $msg . '">'; |
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| 303 | $out .= '<pubsub xmlns="http://jabber.org/protocol/pubsub#owner" ><configure node="' . $node . '"/>'; |
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| 304 | $out .= '</pubsub>'; |
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| 305 | $out .= '</iq>'; |
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| 306 | $this->handleCommand[ $msg ] = 'pubsubResult'; |
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| 307 | $this->sendQueue[] = $out; |
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| 308 | $this->go(); |
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| 309 | } |
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| 310 | |
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| 311 | // delete a pubsub collection or leaf |
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| 312 | public function pubsubDelete ( $to, $type, $name ) |
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| 313 | { |
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| 314 | if ( 'hometree' == $this->pubsubLayout ) |
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| 315 | $node = '/home/' . $this->server . '/' . $this->username . $name; |
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| 316 | else |
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| 317 | $node= $name; |
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| 318 | $msg = $this->mesgcount++; |
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| 319 | $out = '<iq from="' . $this->jid . $this->resource . '" to="' . $to . '" type="' . $type . '" id="' . $msg . '">'; |
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| 320 | $out .= '<pubsub xmlns="http://jabber.org/protocol/pubsub#owner"><delete node="' . $node . '"/>'; |
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| 321 | $out .= '</pubsub>'; |
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| 322 | $out .= '</iq>'; |
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| 323 | $this->handleCommand[ $msg ] = 'pubsubResult'; |
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| 324 | $this->sendQueue[] = $out; |
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| 325 | $this->go(); |
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| 326 | } |
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| 327 | |
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| 328 | // purge a pubsub collection or leaf |
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| 329 | public function pubsubPurge ( $to, $type, $name ) |
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| 330 | { |
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| 331 | if ( 'hometree' == $this->pubsubLayout ) |
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| 332 | $node = '/home/' . $this->server . '/' . $this->username . $name; |
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| 333 | else |
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| 334 | $node= $name; |
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| 335 | $msg = $this->mesgcount++; |
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| 336 | $out = '<iq from="' . $this->jid . $this->resource . '" to="' . $to . '" type="' . $type . '" id="' . $msg . '">'; |
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| 337 | $out .= '<pubsub xmlns="http://jabber.org/protocol/pubsub#owner"><purge node="' . $node . '"/>'; |
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| 338 | $out .= '</pubsub>'; |
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| 339 | $out .= '</iq>'; |
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| 340 | $this->handleCommand[ $msg ] = 'pubsubResult'; |
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| 341 | $this->sendQueue[] = $out; |
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| 342 | $this->go(); |
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| 343 | } |
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| 344 | |
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| 345 | // publish to a pubsub collection |
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| 346 | public function pubsubPublish ( $to, $type, $name, $contents, $nodeId ) |
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| 347 | { |
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| 348 | if ( 1 > strlen ( $to ) ) |
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| 349 | $to = 'pubsub.' . $this->server; |
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| 350 | if ( 1 > strlen ( $type ) ) |
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| 351 | $type = 'set'; |
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| 352 | if ( 1 > strlen ( $nodeId ) ) |
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| 353 | $id = "id='$nodeId'"; |
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| 354 | else |
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| 355 | $id = ''; |
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| 356 | if ( 'hometree' == $this->pubsubLayout ) |
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| 357 | $node = '/home/' . $this->server . '/' . $this->username . $name; |
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| 358 | else |
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| 359 | $node= $name; |
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| 360 | $msg = $this->mesgcount++; |
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| 361 | $out = '<iq from="' . $this->jid . $this->resource . '" to="' . $to . '" type="' . $type . '" id="' . $msg . '">'; |
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| 362 | $out .= '<pubsub xmlns="http://jabber.org/protocol/pubsub"><publish node="' . $node . '">'; |
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| 363 | if ( preg_match ( '/^<item/', $contents ) ) |
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| 364 | $out .= $contents; |
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| 365 | else |
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| 366 | $out .= '<item ' . $id . '>' . $contents . '</item>'; |
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| 367 | $out .= '</publish></pubsub>'; |
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| 368 | $out .= '</iq>'; |
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| 369 | $this->sendQueue[] = $out; |
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| 370 | $this->handleCommand[ $msg ] = 'pubsubResult'; |
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| 371 | $this->go(); |
|---|
| 372 | } |
|---|
| 373 | |
|---|
| 374 | // subscribe to a pubsub collection,leaf or item |
|---|
| 375 | private function pubsubSubscribe ( $to, $type, $name ) |
|---|
| 376 | { |
|---|
| 377 | $msg = $this->mesgcount++; |
|---|
| 378 | if ( 'hometree' == $this->pubsubLayout ) |
|---|
| 379 | $node = '/home/' . $this->server . '/' . $this->username . $name; |
|---|
| 380 | else |
|---|
| 381 | $node= $name; |
|---|
| 382 | $out = '<iq from="' . $this->jid . $this->resource . '" to="' . $to . '" type="' . $type . '" id="' . $msg . '">'; |
|---|
| 383 | $out .= '<pubsub xmlns="http://jabber.org/protocol/pubsub"><subscribe node="' . $name . '" jid="' . $this->jid . $this->resource . '"/>'; |
|---|
| 384 | $out .= '</pubsub>'; |
|---|
| 385 | $out .= '</iq>'; |
|---|
| 386 | $this->sendQueue[] = $out; |
|---|
| 387 | $this->handleCommand[ $msg ] = 'pubsubResult'; |
|---|
| 388 | $this->go(); |
|---|
| 389 | } |
|---|
| 390 | |
|---|
| 391 | private function pubsubResult ( &$node ) |
|---|
| 392 | { |
|---|
| 393 | if ( $this->debug ) $this->log ( "pubsub RESULT !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"); |
|---|
| 394 | if ( $node->getAttribute ( 'type' ) == 'error' ) |
|---|
| 395 | { |
|---|
| 396 | $errnode = $this->query ( 'ERROR', $node ); |
|---|
| 397 | if ( $errnode->length > 0 && ( '403' == $errnode->item( 0 )->getAttribute ( 'code' ) || '500' == $errnode->item( 0 )->getAttribute ( 'code' ) ) ) |
|---|
| 398 | { |
|---|
| 399 | if ( 'CREATE' == $node->firstChild->firstChild->tagName ) |
|---|
| 400 | { |
|---|
| 401 | $pubnode = $node->firstChild->firstChild->getAttribute ( 'node' ); |
|---|
| 402 | if ( $this->debug ) $this->log ( "403 error during CREATE for node '" . $pubnode . "' "); |
|---|
| 403 | $name = preg_replace ( '/^.*?\/' . $this->username . '\//','', $pubnode ); |
|---|
| 404 | $newnode = ''; |
|---|
| 405 | if ( ! in_array ( 'create', $this->pubsubNext ) ) |
|---|
| 406 | { |
|---|
| 407 | $a = array ( ); |
|---|
| 408 | foreach ( explode ( '/', $name ) as $v ) |
|---|
| 409 | { |
|---|
| 410 | $newnode .= '/' . $v; |
|---|
| 411 | $a[] = array ( |
|---|
| 412 | 'call' => 'create', |
|---|
| 413 | 'to' => $node->getAttribute ( 'from' ), |
|---|
| 414 | 'name' => $newnode ); |
|---|
| 415 | } |
|---|
| 416 | foreach ( array_reverse ( $a ) as $v ) |
|---|
| 417 | array_unshift ( $this->pubsubNext, $v ); |
|---|
| 418 | $this->pubsubDoNext ( ); |
|---|
| 419 | } |
|---|
| 420 | } |
|---|
| 421 | } |
|---|
| 422 | elseif ( $errnode->length > 0 && '404' == $errnode->item( 0 )->getAttribute ( 'code' ) ) |
|---|
| 423 | { |
|---|
| 424 | if ( 'PUBLISH' == $node->firstChild->firstChild->tagName ) |
|---|
| 425 | { |
|---|
| 426 | $pubnode = $node->firstChild->firstChild->getAttribute ( 'node' ); |
|---|
| 427 | if ( $this->debug ) $this->log ( "404 error during PUBLISH for node '" . $pubnode . "' "); |
|---|
| 428 | $publish = $this->query ( '//*/PUBLISH', $node ); |
|---|
| 429 | $this->pubsubNext[] = array ( |
|---|
| 430 | 'call' => 'publish', |
|---|
| 431 | 'to' => $node->getAttribute ( 'from' ), |
|---|
| 432 | 'name' => preg_replace ( '/^.*?\/' . $this->username . '/','', $pubnode ) , |
|---|
| 433 | 'contents' => $publish->item( 0 )->firstChild->nodeValue ); |
|---|
| 434 | if ( $this->debug ) $this->log ( "attempting to create node '" . $this->pubsubNext[0]['name'] . "' "); |
|---|
| 435 | $this->pubsubCreateNode ( $node->getAttribute ( 'from' ) ,'set', preg_replace ( '/^.*?\/' . $this->username . '/','', $pubnode ) ); |
|---|
| 436 | } |
|---|
| 437 | } |
|---|
| 438 | elseif ( $errnode->length > 0 && '409' == $errnode->item( 0 )->getAttribute ( 'code' ) ) |
|---|
| 439 | { |
|---|
| 440 | if ( 'CANCEL' == $errnode->item( 0 )->firstChild->tagName || 'CONFLICT' == $errnode->item( 0 )->firstChild->tagName ) |
|---|
| 441 | $this->pubsubDoNext ( ); |
|---|
| 442 | } |
|---|
| 443 | } |
|---|
| 444 | elseif ( 0 < count ( $this->pubsubNext ) ) |
|---|
| 445 | $this->pubsubDoNext ( ); |
|---|
| 446 | } |
|---|
| 447 | |
|---|
| 448 | // do next pubsub request |
|---|
| 449 | private function pubsubDoNext ( ) |
|---|
| 450 | { |
|---|
| 451 | if ( 0 < count ( $this->pubsubNext ) ) |
|---|
| 452 | { |
|---|
| 453 | $pub = array_shift ( $this->pubsubNext ); |
|---|
| 454 | if ( 'publish' == $pub['call'] ) |
|---|
| 455 | { |
|---|
| 456 | if ( $this->debug ) $this->log ( "attempting to publish to node '" . $pub['name'] . "' contents '" . $pub['contents'] . "'"); |
|---|
| 457 | $this->pubsubPublish ( $pub[$to], 'set', $pub['name'], $pub['contents'] ); |
|---|
| 458 | } |
|---|
| 459 | if ( 'create' == $pub['call'] ) |
|---|
| 460 | { |
|---|
| 461 | if ( $this->debug ) $this->log ( "attempting to create node '" . $pub['name'] . "' "); |
|---|
| 462 | $this->pubsubCreateNode ( $pub[$to], 'set', $pub['name'] ); |
|---|
| 463 | } |
|---|
| 464 | } |
|---|
| 465 | } |
|---|
| 466 | |
|---|
| 467 | // do basic setup to get the connection logged in and going |
|---|
| 468 | private function initializeQueue ( ) |
|---|
| 469 | { |
|---|
| 470 | $this->loggedIn = false; |
|---|
| 471 | $this->streamTagBegin = '<'."?xml version='1.0'?"."><stream:stream to='" . $this->server . "' xmlns:stream='http://etherx.jabber.org/streams' xmlns='jabber:client' version='1.0'>"; |
|---|
| 472 | $this->streamTagEnd = '</stream:stream>'; |
|---|
| 473 | $this->sendQueue[] = $this->streamTagBegin; |
|---|
| 474 | $this->recvHandlers['stream:features'] = 'handleFeatures' ; |
|---|
| 475 | $this->recvHandlers['features'] = 'handleFeatures' ; |
|---|
| 476 | $this->recvHandlers['proceed'] = 'enableTLS' ; |
|---|
| 477 | } |
|---|
| 478 | |
|---|
| 479 | // send data out the socket |
|---|
| 480 | private function send ( $data ) |
|---|
| 481 | { |
|---|
| 482 | $len = strlen ( $data ); |
|---|
| 483 | if ( $this->debug ) $this->log ( "SEND: $data"); |
|---|
| 484 | if ( false !== $this->connection ) |
|---|
| 485 | { |
|---|
| 486 | if ( fwrite ( $this->connection, $data, $len) === $len ) |
|---|
| 487 | return true; |
|---|
| 488 | else |
|---|
| 489 | return false; |
|---|
| 490 | } |
|---|
| 491 | return false; |
|---|
| 492 | } |
|---|
| 493 | |
|---|
| 494 | // receive any data waiting on the socket |
|---|
| 495 | private function recv () |
|---|
| 496 | { |
|---|
| 497 | if ( false !== $this->connection ) |
|---|
| 498 | { |
|---|
| 499 | $data = ''; |
|---|
| 500 | $data = fgets ( $this->connection, 4096 ); |
|---|
| 501 | if ( 4094 < strlen ( $data ) ) |
|---|
| 502 | { |
|---|
| 503 | $count = 0; |
|---|
| 504 | while ( 0 != strlen ( $moredata = fgets ( $this->connection, 1024 ) ) && 20 < $count++ ) |
|---|
| 505 | { |
|---|
| 506 | $data .= $moredata; |
|---|
| 507 | usleep ( 10 ); |
|---|
| 508 | } |
|---|
| 509 | } |
|---|
| 510 | if ( 0 < strlen ( $data ) ) |
|---|
| 511 | { |
|---|
| 512 | $data = preg_replace ( '/^<\?xml version=\'1.0\'\?'.'>/', '', $data ); |
|---|
| 513 | $this->stream .= $data; |
|---|
| 514 | if ( $this->debug ) $this->log ( "RECV: $data" ); |
|---|
| 515 | return $data; |
|---|
| 516 | } |
|---|
| 517 | else |
|---|
| 518 | return false; |
|---|
| 519 | } |
|---|
| 520 | return false; |
|---|
| 521 | } |
|---|
| 522 | |
|---|
| 523 | private function go () |
|---|
| 524 | { |
|---|
| 525 | $this->recvQueue = implode ( '', $this->sendQueue ); |
|---|
| 526 | $count = 0; |
|---|
| 527 | $this->moredata = false; |
|---|
| 528 | while ( false !== $this->connection ) |
|---|
| 529 | { |
|---|
| 530 | if ( 0 < count ( $this->sendQueue ) ) |
|---|
| 531 | { |
|---|
| 532 | $count = 0; |
|---|
| 533 | while ( $data = array_shift ( $this->sendQueue ) ) |
|---|
| 534 | $this->send ( $data ); |
|---|
| 535 | } |
|---|
| 536 | $data = $this->recv ( ); |
|---|
| 537 | xml_parse ( $this->xmlparser, $data, false ); |
|---|
| 538 | while ( $rnode = array_shift ( $this->recvTags ) ) |
|---|
| 539 | { |
|---|
| 540 | $rname = strtolower ( $rnode->localName ); |
|---|
| 541 | if ( $this->debug ) $this->log ( " processing $rname "); |
|---|
| 542 | if ( isset ( $this->recvHandlers[$rname] ) ) //&& is_callable ( $this->recvHandlers[$r->name] ) ) |
|---|
| 543 | { |
|---|
| 544 | if ( method_exists ( $this, $this->recvHandlers[$rname] ) ) |
|---|
| 545 | call_user_func_array ( array ( $this, $this->recvHandlers[$rname] ), array ( &$rnode ) ); |
|---|
| 546 | else |
|---|
| 547 | call_user_func_array ( $this->recvHandlers[$rname], array ( &$rnode ) ); |
|---|
| 548 | } |
|---|
| 549 | } |
|---|
| 550 | $count++; |
|---|
| 551 | if ( $count > 20 ) |
|---|
| 552 | { |
|---|
| 553 | if ( $this->idle === true ) |
|---|
| 554 | { |
|---|
| 555 | $count = 0; |
|---|
| 556 | usleep ( 200 ); |
|---|
| 557 | } |
|---|
| 558 | else |
|---|
| 559 | { |
|---|
| 560 | if ( $this->ready == true && count ( $this->handleCommand ) <= count ( $this->command ) ) |
|---|
| 561 | { |
|---|
| 562 | $count = 0; |
|---|
| 563 | return ; |
|---|
| 564 | } |
|---|
| 565 | } |
|---|
| 566 | } |
|---|
| 567 | else |
|---|
| 568 | usleep ( 20 ); |
|---|
| 569 | } |
|---|
| 570 | } |
|---|
| 571 | |
|---|
| 572 | |
|---|
| 573 | // xml parser start element |
|---|
| 574 | private function startElement ( $parser, $name, $attrs ) |
|---|
| 575 | { |
|---|
| 576 | $this->depth++; |
|---|
| 577 | $namespace = ''; |
|---|
| 578 | |
|---|
| 579 | if ( 'STREAM:STREAM' == $name ) |
|---|
| 580 | $this->processDepth++; |
|---|
| 581 | foreach ( $attrs as $k => $v ) |
|---|
| 582 | if ( preg_match ( '/^xmlns:?(.*)/i', $k, $matches ) ) |
|---|
| 583 | { |
|---|
| 584 | if ( strlen ( $matches[1] ) > 0 && ! isset ( $this->namespaces [ $matches[1] ] ) ) |
|---|
| 585 | { |
|---|
| 586 | $this->xquery->registerNamespace ( $matches[1], $v ); |
|---|
| 587 | $this->namespaces [ $matches[1] ] = $v; |
|---|
| 588 | $namespace = $v; |
|---|
| 589 | if ( $this->debug ) $this->log ( " adding namespace $k => $v "); |
|---|
| 590 | } |
|---|
| 591 | } |
|---|
| 592 | if ( $namespace != '' ) |
|---|
| 593 | $node = $this->doc->createElementNS ( $namespace, $name ); |
|---|
| 594 | else |
|---|
| 595 | $node = $this->doc->createElement ( $name ); |
|---|
| 596 | foreach ( $attrs as $k => $v ) |
|---|
| 597 | $node->setAttribute ( strtolower ( $k ), $v ); |
|---|
| 598 | $this->currentXMLNode = $this->currentXMLNode->appendChild ( $node ); |
|---|
| 599 | } |
|---|
| 600 | |
|---|
| 601 | // xml parser start element |
|---|
| 602 | private function endElement ( $parser, $name ) |
|---|
| 603 | { |
|---|
| 604 | $this->depth--; |
|---|
| 605 | //if ( $this->debug ) $this->log ( "depth: " . $this->depth . " processDepth: " . $this->processDepth . " "); |
|---|
| 606 | if ( $this->depth == $this->processDepth || 'STREAM:STREAM' == $name || 'STREAM:FEATURES' == $name || 'PROCEED' == $name ) |
|---|
| 607 | { |
|---|
| 608 | if ( $this->debug ) $this->log ( " adding $name to tags to process "); |
|---|
| 609 | array_push ( $this->recvTags, $this->currentXMLNode ); // replace with tag |
|---|
| 610 | } |
|---|
| 611 | $this->currentXMLNode = $this->currentXMLNode->parentNode; |
|---|
| 612 | } |
|---|
| 613 | |
|---|
| 614 | // xml parser start element |
|---|
| 615 | private function parseData ( $parser, $text ) |
|---|
| 616 | { |
|---|
| 617 | $this->currentXMLNode->appendChild ( $this->doc->createTextNode ( $text ) ); |
|---|
| 618 | } |
|---|
| 619 | |
|---|
| 620 | // xml parser start element |
|---|
| 621 | private function setupXmlParser ( ) |
|---|
| 622 | { |
|---|
| 623 | $this->depth = 0; |
|---|
| 624 | $this->xmlparser = xml_parser_create ( ); |
|---|
| 625 | xml_set_object ( $this->xmlparser, $this ); |
|---|
| 626 | xml_set_element_handler ( $this->xmlparser, 'startElement', 'endElement' ); |
|---|
| 627 | xml_set_character_data_handler ( $this->xmlparser, 'parseData' ); |
|---|
| 628 | $this->doc = new DOMDocument (); |
|---|
| 629 | $this->xquery = new DOMXpath ( $this->doc ); |
|---|
| 630 | $this->xquery->registerNamespace ( 'stream', 'http://etherx.jabber.org/streams' ); |
|---|
| 631 | $this->currentXMLNode = $this->doc->appendChild ( $this->doc->createElement ( 'start' ) ); |
|---|
| 632 | } |
|---|
| 633 | |
|---|
| 634 | // xml XPath query |
|---|
| 635 | private function query ( $expression, &$node = '' ) |
|---|
| 636 | { |
|---|
| 637 | if ( '' == $node ) |
|---|
| 638 | return $this->xquery->query ( $expression ); |
|---|
| 639 | else |
|---|
| 640 | return $this->xquery->query ( $expression , $node ); |
|---|
| 641 | } |
|---|
| 642 | |
|---|
| 643 | |
|---|
| 644 | // open xmpp connection, will accept jid and password |
|---|
| 645 | public function open ( $jid = null, $password = null) |
|---|
| 646 | { |
|---|
| 647 | if ( null != $jid ) |
|---|
| 648 | $this->jid = $jid; |
|---|
| 649 | if ( null != $password ) |
|---|
| 650 | $this->password = $password; |
|---|
| 651 | $this->ready = false; |
|---|
| 652 | if ( false !== $this->connect () ) |
|---|
| 653 | { |
|---|
| 654 | sleep(2); |
|---|
| 655 | $this->go (); |
|---|
| 656 | } |
|---|
| 657 | else |
|---|
| 658 | return false; |
|---|
| 659 | return true; |
|---|
| 660 | } |
|---|
| 661 | |
|---|
| 662 | public function close () |
|---|
| 663 | { |
|---|
| 664 | if ( false !== $this->connection ) |
|---|
| 665 | { |
|---|
| 666 | $this->send ( '</stream:stream>'); |
|---|
| 667 | fclose ( $this->connection ); |
|---|
| 668 | $this->connection = false; |
|---|
| 669 | } |
|---|
| 670 | } |
|---|
| 671 | |
|---|
| 672 | // add a send or recv handler, direction = [ send | recv ], command = command to handle, handler = function ref |
|---|
| 673 | public function addHandler ( $direction, $command, $handler ) |
|---|
| 674 | { |
|---|
| 675 | if ( 'send' == $direction ) |
|---|
| 676 | $this->sendHandler[$command] = $handler; |
|---|
| 677 | if ( 'recv' == $direction ) |
|---|
| 678 | $this->recvHandler[$command] = $handler; |
|---|
| 679 | } |
|---|
| 680 | |
|---|
| 681 | // handle logging |
|---|
| 682 | private function log ( $message ) |
|---|
| 683 | { |
|---|
| 684 | error_log ( 'XMPP: ' . $message ); |
|---|
| 685 | //echo 'XMPP: ' . $message . "\n"; |
|---|
| 686 | } |
|---|
| 687 | } |
|---|
| 688 | |
|---|
| 689 | |
|---|
| 690 | /** |
|---|
| 691 | * * Log the action |
|---|
| 692 | * * @param string $action_type INSERT / UPDATE or DELETE |
|---|
| 693 | * * @param string $uid The UID of the modified item |
|---|
| 694 | * * @param integer $user_no The user owning the containing collection. |
|---|
| 695 | * * @param integer $collection_id The ID of the containing collection. |
|---|
| 696 | * * @param string $dav_name The DAV path of the item, relative to the DAViCal base path |
|---|
| 697 | * */ |
|---|
| 698 | function log_caldav_action( $action_type, $uid, $user_no, $collection_id, $dav_name ) |
|---|
| 699 | { |
|---|
| 700 | global $c; |
|---|
| 701 | $t = new xmpp(); |
|---|
| 702 | $t->tls = 'none'; |
|---|
| 703 | $t->idle = false; |
|---|
| 704 | if ( 1 == $c->dbg["ALL"] || 1 == $c->dbg["push"] ) |
|---|
| 705 | $t->debug = true ; |
|---|
| 706 | else |
|---|
| 707 | $t->debug = false ; |
|---|
| 708 | // for now use a flat node tree layout |
|---|
| 709 | $t->pubsubLayout = 'flat'; |
|---|
| 710 | // get the principal_id for this collection, that's what the client will be looking for |
|---|
| 711 | $qry = new AwlQuery ('SELECT principal_id FROM principal JOIN collection USING (user_no) WHERE collection_id= :collection_id', |
|---|
| 712 | array( ':collection_id' => $collection_id ) ); |
|---|
| 713 | $qry->Exec('pubsub'); |
|---|
| 714 | $row = $qry->Fetch(); |
|---|
| 715 | |
|---|
| 716 | $t->open ( $c->notifications_server['jid'], $c->notifications_server['password'] ); |
|---|
| 717 | if ( isset ( $c->notifications_server['debug_jid'] ) ) |
|---|
| 718 | $t->sendMessage ( $c->notifications_server['debug_jid'], "ACTION: $action_type\nUSER: $user_no\nDAV NAME: $dav_name\nPRINCIPAL ID: " . $row->principal_id ); |
|---|
| 719 | $t->pubsubCreate ( '', 'set', '/davical-' . $row->principal_id, '<x xmlns="jabber:x:data" type="submit"><field var="FORM_TYPE" type="hidden"><value>http://jabber.org/protocol/pubsub#node_config</value></field><field var="pubsub#access_model"><value>open</value></field><field var=\'pubsub#type\'>plist-apple<value></value></field></x>' ); |
|---|
| 720 | $t->pubsubPublish ( '', 'set', '/davical-' . $row->principal_id , '<item xmlns="plist-apple" id="' . $uid . ' " ><plistfrag xmlns="plist-apple"><key>davical</key><string>' . $uid . '</string></plistfrag></item>', $uid ); |
|---|
| 721 | $t->close(); |
|---|
| 722 | } |
|---|
| 723 | |
|---|
