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(); |
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372 | } |
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373 | |
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374 | // subscribe to a pubsub collection,leaf or item |
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375 | private function pubsubSubscribe ( $to, $type, $name ) |
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376 | { |
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377 | $msg = $this->mesgcount++; |
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378 | if ( 'hometree' == $this->pubsubLayout ) |
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379 | $node = '/home/' . $this->server . '/' . $this->username . $name; |
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380 | else |
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381 | $node= $name; |
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382 | $out = '<iq from="' . $this->jid . $this->resource . '" to="' . $to . '" type="' . $type . '" id="' . $msg . '">'; |
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383 | $out .= '<pubsub xmlns="http://jabber.org/protocol/pubsub"><subscribe node="' . $name . '" jid="' . $this->jid . $this->resource . '"/>'; |
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384 | $out .= '</pubsub>'; |
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385 | $out .= '</iq>'; |
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386 | $this->sendQueue[] = $out; |
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387 | $this->handleCommand[ $msg ] = 'pubsubResult'; |
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388 | $this->go(); |
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389 | } |
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390 | |
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391 | private function pubsubResult ( &$node ) |
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392 | { |
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393 | if ( $this->debug ) $this->log ( "pubsub RESULT !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"); |
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394 | if ( $node->getAttribute ( 'type' ) == 'error' ) |
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395 | { |
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396 | $errnode = $this->query ( 'ERROR', $node ); |
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397 | if ( $errnode->length > 0 && ( '403' == $errnode->item( 0 )->getAttribute ( 'code' ) || '500' == $errnode->item( 0 )->getAttribute ( 'code' ) ) ) |
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398 | { |
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399 | if ( 'CREATE' == $node->firstChild->firstChild->tagName ) |
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400 | { |
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401 | $pubnode = $node->firstChild->firstChild->getAttribute ( 'node' ); |
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402 | if ( $this->debug ) $this->log ( "403 error during CREATE for node '" . $pubnode . "' "); |
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403 | $name = preg_replace ( '/^.*?\/' . $this->username . '\//','', $pubnode ); |
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404 | $newnode = ''; |
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405 | if ( ! in_array ( 'create', $this->pubsubNext ) ) |
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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 | |
---|