110 lines
2.6 KiB
PHP
110 lines
2.6 KiB
PHP
<?php
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class Cacher extends PhpObject
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{
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const CACHE_FOLDER = 'cache/';
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const DATA_RETENTION = 60 * 60 * 24 * 90; //3 months
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private $sPattern;
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//Params
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private $sId;
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private $iX;
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private $iY;
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private $iZ;
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private $sToken;
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private $asDomains;
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private $sReferer;
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public function __construct($sPattern, $sId='')
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{
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parent::__construct(__CLASS__, Settings::DEBUG);
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$this->setPattern($sPattern);
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$this->setId($sId);
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$this->iX = 0;
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$this->iY = 0;
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$this->iZ = 0;
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$this->sToken = '';
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$this->asDomains = array();
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$this->sReferer = '';
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}
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public function setId($sId) {
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$this->sId = $sId;
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}
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public function setPattern($sPattern) {
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$this->sPattern = $sPattern;
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}
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public function setToken($sToken) {
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$this->sToken = $sToken;
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}
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public function setDomains($asDomains) {
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$this->asDomains = $asDomains;
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}
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public function setReferer($sReferer) {
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$this->sReferer = $sReferer;
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}
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public function setGeoPos($iX, $iY, $iZ) {
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$this->iX = $iX;
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$this->iY = $iY;
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$this->iZ = $iZ;
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}
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public function pushTile($iX, $iY, $iZ) {
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$this->setGeoPos($iX, $iY, $iZ);
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$sTilePath = $this->getFilePath();
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if(!$this->isFileAvailable($sTilePath)) {
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$oCurl = curl_init();
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curl_setopt($oCurl, CURLOPT_URL, $this->getUrl());
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curl_setopt($oCurl, CURLOPT_HEADER, false);
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curl_setopt($oCurl, CURLOPT_RETURNTRANSFER, true);
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curl_setopt($oCurl, CURLOPT_USERAGENT, $_SERVER['HTTP_USER_AGENT']);
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curl_setopt($oCurl, CURLOPT_REFERER, $this->sReferer);
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$sContent = curl_exec($oCurl);
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curl_close($oCurl);
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file_put_contents($sTilePath, $sContent);
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}
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else $sContent = file_get_contents($sTilePath);
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header('Content-type: '.mime_content_type($sTilePath));
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return $sContent;
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}
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public function getUrl() {
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$asParams = $this->getUrlParams();
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$sUrl = $this->sPattern;
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foreach($asParams as $sParam=>$sValue) {
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$sUrl = str_replace('{'.$sParam.'}', $sValue, $sUrl);
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}
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return $sUrl;
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}
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private function isFileAvailable($sTilePath) {
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if(!file_exists($sTilePath)) return false;
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else return (time() - filemtime($sTilePath) < self::DATA_RETENTION);
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}
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private function getFilePath() {
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$asParams = $this->getUrlParams();
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return self::CACHE_FOLDER.'/'.$asParams['id'].'_'.$asParams['x'].'_'.$asParams['y'].'_'.$asParams['z'].'.tile';
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}
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private function getUrlParams() {
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return array(
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'id' => $this->sId,
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'x' => $this->iX,
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'y' => $this->iY,
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'z' => $this->iZ,
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'token' => $this->sToken,
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's' => empty($this->asDomains)?'':$this->asDomains[array_rand($this->asDomains)]
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);
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}
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}
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