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<?php |
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/** |
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* This file is part of GameQ. |
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* |
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* GameQ is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU Lesser General Public License as published by |
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* the Free Software Foundation; either version 3 of the License, or |
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* (at your option) any later version. |
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* |
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* GameQ is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public License |
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* along with this program. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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namespace GameQ\Protocols; |
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use GameQ\Buffer; |
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use GameQ\Exception\Protocol as Exception; |
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use GameQ\Helpers\Str; |
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use GameQ\Protocol; |
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use GameQ\Result; |
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/** |
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* GameSpy2 Protocol class |
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* |
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* Given the ability for non utf-8 characters to be used as hostnames, player names, etc... this |
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* version returns all strings utf-8 encoded. To access the proper version of a |
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* string response you must use Str::utf8ToIso() on the specific response. |
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* |
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* @author Austin Bischoff <[email protected]> |
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*/ |
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class Gamespy2 extends Protocol |
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{ |
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/** |
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* Define the state of this class |
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* |
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* @var int |
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*/ |
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protected $state = self::STATE_BETA; |
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/** |
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* Array of packets we want to look up. |
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* Each key should correspond to a defined method in this or a parent class |
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* |
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* @var array |
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*/ |
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protected $packets = [ |
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self::PACKET_DETAILS => "\xFE\xFD\x00\x43\x4F\x52\x59\xFF\x00\x00", |
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self::PACKET_PLAYERS => "\xFE\xFD\x00\x43\x4F\x52\x58\x00\xFF\xFF", |
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]; |
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/** |
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* Use the response flag to figure out what method to run |
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* |
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* @var array |
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*/ |
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protected $responses = [ |
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"\x00\x43\x4F\x52\x59" => "processDetails", |
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"\x00\x43\x4F\x52\x58" => "processPlayers", |
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]; |
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/** |
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* The query protocol used to make the call |
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* |
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* @var string |
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*/ |
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protected $protocol = 'gamespy2'; |
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/** |
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* String name of this protocol class |
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* |
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* @var string |
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*/ |
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protected $name = 'gamespy2'; |
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/** |
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* Longer string name of this protocol class |
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* |
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* @var string |
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*/ |
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protected $name_long = "GameSpy2 Server"; |
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/** |
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* Normalize settings for this protocol |
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* |
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* @var array |
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*/ |
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protected $normalize = [ |
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// General |
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'general' => [ |
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// target => source |
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'dedicated' => 'dedicated', |
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'gametype' => 'gametype', |
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'hostname' => 'hostname', |
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'mapname' => 'mapname', |
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'maxplayers' => 'maxplayers', |
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'mod' => 'mod', |
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'numplayers' => 'numplayers', |
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'password' => 'password', |
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], |
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]; |
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/** |
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* Process the response |
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* |
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* @return array |
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* @throws Exception |
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*/ |
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public function processResponse() |
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{ |
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// Will hold the packets after sorting |
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$packets = []; |
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// We need to pre-sort these for split packets so we can do extra work where needed |
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foreach ($this->packets_response as $response) { |
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$buffer = new Buffer($response); |
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// Pull out the header |
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$header = $buffer->read(5); |
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// Add the packet to the proper section, we will combine later |
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$packets[$header][] = $buffer->getBuffer(); |
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} |
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unset($buffer); |
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$results = []; |
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// Now let's iterate and process |
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foreach ($packets as $header => $packetGroup) { |
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// Figure out which packet response this is |
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if (!array_key_exists($header, $this->responses)) { |
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throw new Exception(__METHOD__ . " response type '" . bin2hex($header) . "' is not valid"); |
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} |
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// Now we need to call the proper method |
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$results = array_merge( |
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$results, |
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call_user_func_array([$this, $this->responses[$header]], [new Buffer(implode($packetGroup))]) |
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); |
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} |
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unset($packets); |
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return $results; |
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} |
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// Internal methods |
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/** |
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* Handles processing the details data into a usable format |
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* |
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* @param \GameQ\Buffer $buffer |
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* |
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* @return array |
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* @throws Exception |
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* @throws \GameQ\Exception\Protocol |
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*/ |
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protected function processDetails(Buffer $buffer) |
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{ |
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// Set the result to a new result instance |
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$result = new Result(); |
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// We go until we hit an empty key |
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while ($buffer->getLength()) { |
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$key = $buffer->readString(); |
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if (strlen($key) == 0) { |
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break; |
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} |
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$result->add($key, Str::isoToUtf8($buffer->readString())); |
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} |
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unset($buffer); |
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return $result->fetch(); |
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} |
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/** |
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* Handles processing the players data into a usable format |
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* |
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* @param \GameQ\Buffer $buffer |
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* |
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* @return array |
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* @throws Exception |
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* @throws \GameQ\Exception\Protocol |
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*/ |
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protected function processPlayers(Buffer $buffer) |
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{ |
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// Set the result to a new result instance |
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$result = new Result(); |
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// Skip the header |
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$buffer->skip(1); |
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// Players are first |
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$this->parsePlayerTeam('players', $buffer, $result); |
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// Teams are next |
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$this->parsePlayerTeam('teams', $buffer, $result); |
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unset($buffer); |
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return $result->fetch(); |
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} |
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/** |
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* Parse the player/team info returned from the player call |
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* |
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* @param string $dataType |
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* @param \GameQ\Buffer $buffer |
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* @param \GameQ\Result $result |
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* |
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* @throws Exception |
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* @throws \GameQ\Exception\Protocol |
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*/ |
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protected function parsePlayerTeam($dataType, Buffer &$buffer, Result &$result) |
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{ |
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// Do count |
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$result->add('num_' . $dataType, $buffer->readInt8()); |
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// Variable names |
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$varNames = []; |
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// Loop until we run out of length |
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while ($buffer->getLength()) { |
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$varNames[] = str_replace('_', '', $buffer->readString()); |
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if ($buffer->lookAhead() === "\x00") { |
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$buffer->skip(); |
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break; |
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} |
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} |
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// Check if there are any value entries |
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if ($buffer->lookAhead() == "\x00") { |
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$buffer->skip(); |
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return; |
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} |
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// Get the values |
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while ($buffer->getLength() > 4) { |
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foreach ($varNames as $varName) { |
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$result->addSub($dataType, Str::isoToUtf8($varName), Str::isoToUtf8($buffer->readString())); |
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} |
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if ($buffer->lookAhead() === "\x00") { |
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$buffer->skip(); |
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break; |
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} |
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} |
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return; |
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} |
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} |
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