Uplink/Uplink.class.php

   1 <?php
   2 /********************************* PHP-P10 ******************************
   3  *    P10 uplink class by pk910   (c)2011 pk910                         *
   4  ************************************************************************
   5  *                          Version 2 (OOP)                             *
   6  *                                                                      *
   7  * PHP-P10 is free software; you can redistribute it and/or modify      *
   8  * it under the terms of the GNU General Public License as published by *
   9  * the Free Software Foundation; either version 2 of the License, or    *
  10  * (at your option) any later version.                                  *
  11  *                                                                      *
  12  * This program is distributed in the hope that it will be useful,      *
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of       *
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the        *
  15  * GNU General Public License for more details.                         *
  16  *                                                                      *
  17  * You should have received a copy of the GNU General Public License    *
  18  * along with PHP-P10; if not, write to the Free Software Foundation,   *
  19  * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.       *
  20  *                                                                      *
  21  ************************************************************************
  22  *
  23  *  Uplink/Uplink.class.php
  24  *
  25  * This file contains the basic P10 Protocol handler.
  26  *
  27  ************************************************************************
  28  * accessable methods:
  29  *
  30  * void initialize()
  31  *     has to be called after the settings have been set.
  32  *
  33  * void loop()
  34  *     loop function that should be calles as many times as possible.
  35  *     It reads from the socket and BLOCKS the script execution for a
  36  *     specific time if nothing is received.
  37  *
  38  * void setUplinkHost(String $host, int $port, bool $ssl = false, String $bind = null)
  39  *     sets the Uplink connection information.
  40  *
  41  * void setLoopTimeout(int $timeout)
  42  *     sets the maximum time loop() is blocking the script execution.
  43  *
  44  * void setUplinkServer(int $numeric, String $name, String $password, String $description)
  45  *     sets the own P10 Server information.
  46  *
  47  * void setValidateServer(String $name, String $password)
  48  *     sets additional security relevant information about the remote server.
  49  *
  50  * void setEventHandler(EventHandler $event_handler)
  51  *     sets the EventHandlder
  52  */
  53 require_once("Client.class.php");
  54 require_once("Numerics.class.php");
  55 require_once("P10Formatter.class.php");
  56 require_once("P10_Server.class.php");
  57 require_once("P10_User.class.php");
  58 require_once("P10_Channel.class.php");
  59 require_once("P10_ModeSets.class.php");
  60
  61 class Uplink {
  62         private $client;
  63         private $settings = array();
  64         private $server;
  65
  66         const FLAG_P10SESSION      = 0x0001; //connection is in P10 mode (server is connected)
  67         const FLAG_SECURITY_QUIT   = 0x0002; //local connection abort because of security issues
  68         const FLAG_NOT_CONNECTABLE = 0x0004; //remote server is not connectable
  69         const FLAG_BURST_PENDING   = 0x0008; //we still have to burst
  70         const FLAG_CONNECTED       = 0x0010; //connected and synced (ready)
  71         const FLAG_GOT_PASS        = 0x0020; //got PASS from the remote Server
  72         private $flags = 0;
  73
  74         public function __construct() {
  75                 $this->client = new Client();
  76                 $this->setSetting("recv_timeout", 1000);
  77         }
  78
  79         public function initialize() {
  80                 if($this->server) {
  81                         trigger_error("Uplink already initialized.", E_USER_ERROR);
  82                         return;
  83                 }
  84                 $self_numeric = $this->getSetting("numeric");
  85                 $self_name = $this->getSetting("name");
  86                 $self_description = $this->getSetting("description");
  87                 if(!$self_numeric || !$self_name) {
  88                         trigger_error("Server Settings missing.", E_USER_ERROR);
  89                         return;
  90                 }
  91                 $this->server = new P10_Server($self_name, $self_numeric, null, time(), time(), $self_description);
  92         }
  93
  94         public function loop() {
  95                 if($this->server == null) {
  96                         trigger_error("Uplink not initialized.", E_USER_ERROR);
  97                         return;
  98                 }
  99                 if(!$this->client->connected()) {
 100                         if(($this->flags & self::FLAG_P10SESSION)) {
 101                                 //Server got disconnected
 102                                 $this->server->disconnectServer(true);
 103                                 $this->flags &= ~self::FLAG_P10SESSION;
 104                         }
 105                         $host = $this->getSetting("host");
 106                         $port = $this->getSetting("port");
 107                         if($host == null || $port == null) {
 108                                 trigger_error("Uplink Settings missing.", E_USER_ERROR);
 109                                 return;
 110                         }
 111                         if(($this->flags & self::FLAG_SECURITY_QUIT) || ($this->flags & self::FLAG_NOT_CONNECTABLE)) {
 112                                 sleep(1);
 113                         }
 114                         $state = $this->client->connect($host, $port, $this->getSetting("bind"), $this->getSetting("ssl"), $this->getSetting("recv_timeout"));
 115                         if(!$state) {
 116                                 usleep($this->getSetting("recv_timeout") / 1000);
 117                                 $this->flags |= self::FLAG_NOT_CONNECTABLE;
 118                                 return;
 119                         }
 120                         $this->flags = 0;
 121                         $this->loginServer();
 122                 }
 123                 //try to receive new data from the Uplink
 124                 $lines = $this->client->recv();
 125                 if($lines == null) return;
 126                 foreach($lines as $line) {
 127                         $this->parseLine($line);
 128                 }
 129         }
 130
 131         public function setUplinkHost($host, $port, $ssl = false, $bind = null) {
 132                 $this->setSetting("host", $host);
 133                 $this->setSetting("port", $port);
 134                 $this->setSetting("ssl", $ssl);
 135                 $this->setSetting("bind", $bind);
 136         }
 137
 138         public function setLoopTimeout($timeout) {
 139                 $this->setSetting("recv_timeout", $timeout);
 140         }
 141
 142         public function setUplinkServer($numeric, $name, $password, $description) {
 143                 $this->setSetting("numeric", Numerics::intToNum($numeric, 2));
 144                 $this->setSetting("name", $name);
 145                 $this->setSetting("password", $password);
 146                 $this->setSetting("description", $description);
 147         }
 148
 149         public function setValidateServer($name, $password) {
 150                 $this->setSetting("their_name", $name);
 151                 $this->setSetting("their_password", $password);
 152         }
 153
 154         private function setSetting($setting, $value) {
 155                 $this->settings[$setting] = $value;
 156         }
 157
 158         private function getSetting($setting) {
 159                 if(array_key_exists($setting, $this->settings)) {
 160                         return $this->settings[$setting];
 161                 } else {
 162                         return null;
 163                 }
 164         }
 165
 166         private function loginServer() {
 167                 $password = $this->getSetting("password");
 168                 $this->send("PASS", $password);
 169                 $this->send("SERVER", $this->server->getName(), $this->server->getStartTime(), $this->server->getLinkTime(), $this->server->getNumeric(), $this->server->getDescription());
 170         }
 171
 172         private function parseLine($line) {
 173                 $highExplode = explode(" :", $line, 2);
 174                 $tokens = explode(" ", $highExplode[0]);
 175                 if(count($highExplode) > 1)
 176                         $tokens[] = $highExplode[1];
 177                 $cmdPos = (($this->flags & self::FLAG_P10SESSION) ? 1 : 0);
 178                 if($cmdPos == 1) $from = $tokens[0];
 179                 else $from = null;
 180                 $arguments = array_slice($tokens, $cmdPos + 1);
 181                 switch(strtoupper($tokens[$cmdPos])) {
 182                 //pre P10 Session
 183                         case "PASS":
 184                                 $this->recv_pass($from, $arguments);
 185                                 break;
 186                         case "SERVER":
 187                                 $this->recv_server($from, $arguments);
 188                                 break;
 189                         case "ERROR":
 190                                 $this->recv_error($from, $arguments);
 191                                 break;
 192                 //P10 Session
 193                         case "S":
 194                                 $this->recv_server($from, $arguments);
 195                                 break;
 196                         case "G":
 197                                 $this->recv_ping($from, $arguments);
 198                                 break;
 199                         case "N":
 200                                 $this->recv_nick($from, $arguments);
 201                                 break;
 202                         case "EB":
 203                                 $this->recv_end_of_burst($from, $arguments);
 204                                 break;
 205                         case "EA":
 206                                 $this->recv_end_of_burst_ack($from, $arguments);
 207                                 break;
 208                         case "SQ":
 209                                 $this->recv_server_quit($from, $arguments);
 210                                 break;
 211                         case "Q":
 212                                 $this->recv_quit($from, $arguments);
 213                                 break;
 214                         case "B":
 215                                 $this->recv_burst($from, $arguments);
 216                                 break;
 217                 //default
 218                         default:
 219                                 //unknown cmd
 220                                 break;
 221                 }
 222         }
 223
 224         private function send($command) {
 225                 if(func_num_args() > 1) {
 226                         $args = array_slice(func_get_args(), 1);
 227                         $command = P10Formatter::formatCMD($this->getSetting("numeric"), $command, $args);
 228                 } else {
 229                         $command = P10Formatter::formatCMD($this->getSetting("numeric"), $command, array());
 230                 }
 231                 $this->client->send($command);
 232         }
 233
 234         /********************************************************************************************
 235          *                                     INCOMING COMMANDS                                    *
 236          ********************************************************************************************/
 237
 238         private function recv_pass($from, $args) {
 239                 $their_pass = $this->getSetting("their_password");
 240                 if($their_pass) {
 241                         if($args[0] != $their_pass) {
 242                                 //security QUIT
 243                                 $this->flags |= self::FLAG_SECURITY_QUIT;
 244                                 $this->send("ERROR", "Incorrect password received.");
 245                                 $this->client->disconnect();
 246                                 return;
 247                         }
 248                         $this->flags |= self::FLAG_GOT_PASS;
 249                 }
 250         }
 251
 252         private function recv_error($from, $args) {
 253                 //we received an error - the socket is dead for us, now
 254                 //maybe we want to log this, later
 255                 $this->client->disconnect();
 256         }
 257
 258         private function recv_server($from, $args) {
 259                 if($from == null) {
 260                         //our uplink Server
 261                         $their_name = $this->getSetting("their_name");
 262                         if($their_name && $args[0] != $their_name) {
 263                                 $this->flags |= self::FLAG_SECURITY_QUIT;
 264                                 $this->send("ERROR", "Invalid Server name");
 265                                 $this->client->disconnect();
 266                                 return;
 267                         }
 268                         if($this->getSetting("their_password") && !($this->flags & self::FLAG_GOT_PASS)) {
 269                                 $this->flags |= self::FLAG_SECURITY_QUIT;
 270                                 $this->send("ERROR", "PASS missing.");
 271                                 $this->client->disconnect();
 272                                 return;
 273                         }
 274                         $new_server = new P10_Server($args[0], substr($args[5],0,2), $this->server, $args[2], $args[3], $args[7]);
 275                         $this->server->addServer($new_server);
 276                         $this->flags |= self::FLAG_P10SESSION | self::FLAG_BURST_PENDING;
 277                 } else {
 278                         //another server got a new slave server ^^
 279                         $server = P10_Server::getServerByNum($from);
 280                         if($server == null) {
 281                                 trigger_error("Parent Server (".$from.") does not exist or was not found on recv_server.", E_USER_ERROR);
 282                                 return;
 283                         }
 284                         $new_server = new P10_Server($args[0], substr($args[5],0,2), $server, $args[2], $args[3], $args[7]);
 285                         $server->addServer($new_server);
 286                 }
 287         }
 288
 289         private function recv_ping($from, $args) {
 290                 $this->send("Z", $args[0]); //simply PONG
 291         }
 292
 293         private function recv_nick($from, $args) {
 294                 if(count($args) <= 2) {
 295                         //Nick change
 296                         $user = P10_User::getUserByNum($from);
 297                         if($user == null) {
 298                                 trigger_error("Server tries to change the nick of an user that does not exist or was not found on recv_nick.", E_USER_ERROR);
 299                                 return;
 300                         }
 301                         $nick->setNick($args[0]);
 302                 } else {
 303                         //New User
 304                         $numeric = $args[count($args)-2];
 305                         $nick = $args[0];
 306                         $server = P10_Server::getServerByNum($from);
 307                         if($server == null) {
 308                                 trigger_error("Server (".$from.") the User (".$nick.") is coming from does not exist or was not found on recv_nick.", E_USER_ERROR);
 309                                 return;
 310                         }
 311                         if(substr($numeric,0,2) != $from) {
 312                                 trigger_error("A Server (".$from.") tries to connect a User with an invalid User numeric ('".$numeric."' does not belong to the Server)", E_USER_WARNING);
 313                         }
 314                         $connect_time = $args[2];
 315                         $ident = $args[3];
 316                         $host = $args[4];
 317                         $modes = implode(" ",array_slice($args, 5, count($args)-8));
 318                         $modes = new P10_UserModeSet($modes);
 319                         $ip = Numerics::parseIP($args[count($args)-3]);
 320                         $realname = $args[count($args)-1];
 321                         new P10_User($nick, $numeric, $server, $connect_time, $ident, $host, $ip, $realname, $modes);
 322                 }
 323         }
 324
 325         private function recv_end_of_burst($from, $args) {
 326                 if(($this->flags & self::FLAG_BURST_PENDING)) {
 327                         $this->burst();
 328                         $this->send("EA");
 329                         $this->flags &= ~self::FLAG_BURST_PENDING;
 330                 }
 331         }
 332
 333         private function recv_end_of_burst_ack($from, $args) {
 334                 $this->flags |= self::FLAG_CONNECTED;
 335         }
 336
 337         private function recv_server_quit($from, $args) {
 338                 $server = P10_Server::getServerByName($args[0]);
 339                 if($server == null) {
 340                         trigger_error("Server (".$args[0].") not found.", E_USER_ERROR);
 341                         return;
 342                 }
 343                 $server->disconnectServer();
 344         }
 345
 346         private function recv_quit($from, $args) {
 347                 $user = P10_User::getUserByNum($from);
 348                 if($user == null) {
 349                         trigger_error("Server tries to quit an user that does not exist or was not found on recv_quit.", E_USER_ERROR);
 350                         return;
 351                 }
 352                 $user->quit($args[0]);
 353         }
 354
 355         private function recv_burst($from, $args) {
 356                 $name = $args[0];
 357                 $create_time = $args[1];
 358                 $channel = P10_Channel::getChannelByName($name);
 359                 if($channel == null)
 360                         $channel = new P10_Channel($name);
 361                 $modes = $channel->getModes();
 362                 $userstr = $args[count($args)-1];
 363                 $modeparamcount = count($args)-3;
 364                 if($userstr[0] == "%") {
 365                         //ban list
 366                         $banlist = explode(" ", substr($userstr, 1));
 367                         foreach($banlist as $ban) {
 368                                 //TODO: save bans
 369                         }
 370                         $userstr = $args[count($args)-2];
 371                         $modeparamcount--;
 372                 }
 373                 if($userstr[0] == "+") { //MODE String
 374                         $modeparamcount++;
 375                         $userstr = "";
 376                 }
 377                 $users = explode(",",$userstr);
 378                 $isop = false; $isvoice = false;
 379                 foreach($users as $user) {
 380                         $uexp = explode(":", $user);
 381                         if(strlen($uexp[0]) != 5) {
 382                                 trigger_error("burst parse error: '".$uexp[0]."' is not an user numeric.", E_USER_ERROR);
 383                                 return;
 384                         }
 385                         if(count($uexp) > 1) {
 386                                 $isop = false;
 387                                 $isvoice = false;
 388                                 for($i = 0; $i < strlen($uexp[1]); $i++) {
 389                                         if($uexp[1][0] == "@") $isop = true;
 390                                         if($uexp[1][0] == "+") $isvoice = true;
 391                                 }
 392                         }
 393                         $user = P10_User::getUserByNum($uexp[0]);
 394                         if($user == null) {
 395                                 trigger_error("burst parse error: cant find User '".$uexp[0]."'.", E_USER_ERROR);
 396                                 return;
 397                         }
 398                         $channel->burstUser($user, $isop, $isvoice);
 399                 }
 400                 $modes->parseModes(implode(array_slice($args, 2, $modeparamcount)));
 401         }
 402
 403         /********************************************************************************************
 404          *                                     SERVER FUNCTIONS                                     *
 405          ********************************************************************************************/
 406
 407         private function burst() {
 408                 foreach($this->server->getUsers() as $user) {
 409                         $nick = $user->getNick();
 410                         $connect_time = $user->getConnectTime();
 411                         $ident = $user->getIdent();
 412                         $host = $user->getHost();
 413                         $modes = $user->getModes()->getModeString();
 414                         $ip = Numerics::numericFromIP($user->getIP());
 415                         $numeric = $user->getNumeric();
 416                         $realname = $user->getRealname();
 417                         $this->send("N", $nick, $connect_time, $ident, $host, $modes, $ip, $numeric, $realname);
 418                 }
 419                 foreach(P10_Channel::getChannels() as $channel) {
 420                         $sorted_users = array('ov' => array(), 'o' => array(), 'v' => array(), '-' => array());
 421                         $local_users = false;
 422                         foreach($channel->getUsers() as $user) {
 423                                 if(substr($user->getNumeric(), 0, 2) != $this->server->getNumeric()) continue; //skip users that are not on the local server
 424                                 $privs = $channel->getUserPrivs($user);
 425                                 $strPrivs = "";
 426                                 if(($privs & P10_Channel::USERPRIV_OPED)) $strPrivs .= "o";
 427                                 if(($privs & P10_Channel::USERPRIV_VOICE)) $strPrivs .= "v";
 428                                 if($strPrivs == "") $strPrivs = "-";
 429                                 $local_users = true;
 430                                 $sorted_users[$strPrivs][] = $user;
 431                         }
 432                         if(!$local_users) continue;
 433                         $userStr = "";
 434                         foreach($sorted_users['-'] as $user) {
 435                                 if($userStr != "") $userStr.=",";
 436                                 $userStr .= $user->getNumeric();
 437                         }
 438                         foreach($sorted_users['ov'] as $i => $user) {
 439                                 if($userStr != "") $userStr.=",";
 440                                 $userStr .= $user->getNumeric();
 441                                 if($i == 0) $userStr .= ":ov";
 442                         }
 443                         foreach($sorted_users['o'] as $i => $user) {
 444                                 if($userStr != "") $userStr.=",";
 445                                 $userStr .= $user->getNumeric();
 446                                 if($i == 0) $userStr .= ":o";
 447                         }
 448                         foreach($sorted_users['v'] as $i => $user) {
 449                                 if($userStr != "") $userStr.=",";
 450                                 $userStr .= $user->getNumeric();
 451                                 if($i == 0) $userStr .= ":v";
 452                         }
 453                         $banString = "";
 454                         //TODO: Build ban String
 455                         $burstString = "";
 456                         $modeString = $channel->getModes()->getModeString();
 457                         if($modeString != "+") {
 458                                 $burstString .= $modeString;
 459                         }
 460                         if($userStr != "") {
 461                                 if($burstString != "") $burstString .= " ";
 462                                 $burstString .= $userStr;
 463                         }
 464                         if($banString != "") {
 465                                 if($burstString != "") $burstString .= " ";
 466                                 $burstString .= ":%".$banString;
 467                         }
 468                         $this->send("B", $channel->getName(), $channel->getCreateTime(), $burstString);
 469                 }
 470                 $this->send("EB");
 471         }
 472
 473 }
 474
 475 ?>