<?php
	//paths used for real file locations in configuration of virtual paths
	$base_path = "/var/www/html/x/download/regular";//"/Volumes/G/tmp";
	$base_url = "/x/download/regular";
	
	$xfiles_url = "http://support.dhtmlx.com/x-files/beta_builds";
	//path to store remote files (from $xfiles_url) before return to client
	$xfiles_local_path = $base_path."/x-files";
	$version = "170419";
	$build = "51";
	//configuration of virtual paths
	$durl = array(
		"dhtmlxSuite.zip" => $base_path."/180619/dhtmlxSuite_v5.2.0_std.zip",
		"dhtmlxGrid.zip" => $base_path."/$version/dhtmlxGrid_v${build}_std.zip",
		"dhtmlxTree.zip" => $base_path."/$version/dhtmlxTree_v${build}_std.zip",
                "dhtmlxTreeView.zip" => $base_path."/$version/dhtmlxTreeView_v${build}_std.zip",
		"dhtmlxTabbar.zip" => $base_path."/$version/dhtmlxTabbar_v${build}_std.zip",
		"dhtmlxWindows.zip" => $base_path."/$version/dhtmlxWindows_v${build}_std.zip",
		"dhtmlxMenu.zip" => $base_path."/$version/dhtmlxMenu_v${build}_std.zip",
		"dhtmlxToolbar.zip" => $base_path."/$version/dhtmlxToolbar_v${build}_std.zip",
		"dhtmlxAjax.zip" => $base_path."/$version/dhtmlxAjax_v${build}_std.zip",
		"dhtmlxCalendar.zip" => $base_path."/$version/dhtmlxCalendar_v${build}_std.zip",
		"dhtmlxAccordion.zip" => $base_path."/$version/dhtmlxAccordion_v${build}_std.zip",
		"dhtmlxChart.zip" => $base_path."/$version/dhtmlxChart_v${build}_std.zip",
		"dhtmlxCombo.zip" => $base_path."/$version/dhtmlxCombo_v${build}_std.zip",
		"dhtmlxColorPicker.zip" => $base_path."/$version/dhtmlxColorPicker_v${build}_std.zip",
		"dhtmlxDataView.zip" => $base_path."/$version/dhtmlxDataView_v${build}_std.zip",
		"dhtmlxEditor.zip" => $base_path."/$version/dhtmlxEditor_v${build}_std.zip",
		"dhtmlxForm.zip" => $base_path."/$version/dhtmlxForm_v${build}_std.zip",
		"dhtmlxSlider.zip" => $base_path."/$version/dhtmlxSlider_v${build}_std.zip",
		"dhtmlxRibbon.zip" => $base_path."/$version/dhtmlxRibbon_v${build}_std.zip",
		"dhtmlxSidebar.zip" => $base_path."/$version/dhtmlxSidebar_v${build}_std.zip",
		"dhtmlxLayout.zip" => $base_path."/$version/dhtmlxLayout_v${build}_std.zip",
		"dhtmlxList.zip" => $base_path."/$version/dhtmlxList_v${build}_std.zip",
		"dhtmlxCarousel.zip" => $base_path."/$version/dhtmlxCarousel_v${build}_std.zip",
		
		"dhtmlxVault.zip" => $base_path."/dhtmlxVault/dhtmlxVault_v25_std.zip",
		
		"dhtmlx_30_chm.zip" => $base_path."/130416/dhtmlx36_chm.zip",
		"dhtmlx_chm.zip" => $base_path."/150929/dhtmlx45_chm.zip",
		

		"dhtmlx_v40_beta_std.zip" => $base_path."/betas/dhtmlxSuite_4.0_Beta_STD_build_140421.zip",
		"dhtmlx_v40_beta_pro_ae1622fdb0.zip" => $base_path."/betas/AD9316EF2/dhtmlxSuite_4.0_Beta_PRO_build_140421.zip",

		"dhtmlxScheduler.zip" => $base_path."/dhtmlxScheduler/scheduler.zip",
		"dhtmlxScheduler_mobile.zip" => $base_path."/dhtmlxScheduler/dhtmlxScheduler_mobile_v35_120626.zip",

		"dhtmlxScheduler_docs_chm.zip" => $base_path."/dhtmlxScheduler/dhtmlxscheduler_v40_chm.zip",
		"dhtmlxscheduler_chm.zip" => $base_path."/dhtmlxScheduler/dhtmlxscheduler_v40_chm.zip",
		"dhtmlxScheduler_docs_html.zip" => $base_path."/dhtmlxScheduler/dhtmlxscheduler_v37_html.zip",

		"dhtmlxGantt.zip" => $base_path."/dhtmlxGantt/gantt.zip",
		"dhtmlxgantt_chm.zip" => $base_path."/dhtmlxGantt/dhtmlxgantt_v20_chm.zip",
		"dhtmlxgantt_docs_html.zip" => $base_path."/dhtmlxGantt/dhtmlxgantt_v20_html.zip",

		"dhtmlxConnector_java.zip" => $base_path."/dhtmlxConnector/dhtmlxConnector_java_v15_120612.zip",
		"dhtmlxConnector_net.zip" => $base_path."/dhtmlxConnector/dhtmlxConnector_net_v15_120612.zip",
		"dhtmlxConnector_php.zip" => $base_path."/dhtmlxConnector/dhtmlxConnector_php_v15_120612.zip",
		"dhtmlxConnector_cfm.zip" => $base_path."/dhtmlxConnector/dhtmlxConnector_cfm_v10.zip",
		"dhtmlxScheduler_windows.zip" => $base_path."/dhtmlxScheduler/dhtmlxScheduler_v37_win_130220.zip",

		"joomla_com_scheduler.zip" => $base_path."/dhtmlxScheduler/joomla_com_scheduler_v30_120425.zip",

		"dhtmlxSpreadsheet.zip" => $base_path."/dhtmlxSpreadsheet/dhtmlxSpreadsheet_v21.zip",

		"dhtmlxSpreadsheet_wp.zip" => $base_path."/dhtmlxSpreadsheet/dhtmlxSpreadsheet_v20_wp.zip",
		"dhtmlxSpreadsheet_drupal.zip" => $base_path."/dhtmlxSpreadsheet/dhtmlxSpreadsheet_v20_drupal.zip",
		"dhtmlxSpreadsheet_joomla.zip" => $base_path."/dhtmlxSpreadsheet/dhtmlxSpreadsheet_v20_joomla.zip",
		"dhtmlxSpreadsheet_joomla_30.zip" => $base_path."/dhtmlxSpreadsheet/dhtmlxSpreadsheet_v20_joomla_30.zip",
		"dhtmlxSpreadsheet_modx.zip" => $base_path."/dhtmlxSpreadsheet/spreadsheet-2.0-pl.transport.zip",


		"dhtmlxConnector_php_dvl.zip" => $xfiles_url."/dhtmlxConnector_php_1.1.dvl.zip",
		"dhtmlxConnector_java_dvl.zip" => $xfiles_url."/dhtmlxConnector_java_1.1.dvl.zip",
		"dhtmlxConnector_net_dvl.zip" => $xfiles_url."/dhtmlxConnector_net_1.1.dvl.zip",
		"dhtmlxConnector_cfm_dvl.zip" => $xfiles_url."/dhtmlxConnector_cfm_1.1.dvl.zip",

		"dhtmlxTouch.zip" => $base_path."/dhtmlxTouch/dhtmlxTouch_v12_120913.zip",

		"dhtmlxtouch_html.zip" => $base_path."/dhtmlxTouch/dhtmlxtouch_html_v12.zip",
		"dhtmlxtouch_chm.zip" => $base_path."/dhtmlxTouch/dhtmlxtouch_chm_v12.zip",

		"grid-pdf-php.zip" => $xfiles_url."/grid-pdf-php.zip",
		"grid-pdf-net.zip" => $xfiles_url."/grid-pdf-net.zip",
		"grid-pdf-java.zip" => $xfiles_url."/grid-pdf-java.zip",
		"grid-excel-php.zip" => $xfiles_url."/grid-excel-php.zip",
		"grid-excel-net.zip" => $xfiles_url."/grid-excel-net.zip",
		"grid-excel-java.zip" => $xfiles_url."/grid-excel-java.zip",
		"scheduler-pdf-php.zip" => $xfiles_url."/scheduler-pdf-php.zip",
		"scheduler-pdf-java.zip" => $xfiles_url."/scheduler-pdf-java.zip",
		"scheduler-pdf-net.zip" => $xfiles_url."/scheduler-pdf-net.zip",

		"dhtmlxDataTable.zip" => $base_path."/dhtmlxDataTable/dhtmlxdatatable_1.0rc_1206191307.zip",
		"dhtmlxdatatable_chm.zip" => $base_path."/dhtmlxDataTable/dhtmlxdatatable-docs-chm-1.0rc_120626.zip"
			);

	$file = $durl[$_GET["pack"]];
	$date = @str_replace(" ","\t",date('Y-m-d H:i:s'));

	//if file pathin configuration is remote url, check if it exists localy (using local path to x-files) - if not try to curl it there and then use as local
	if(strpos($file,'http://')!==false){
		$url = $file;
		$local_file = str_replace($xfiles_url,$xfiles_local_path,$url);

		//if no such file localy - download it from remote url and store localy
		if(!file_exists($local_file)){
			$fp = fopen($local_file, 'w');
 
	    $ch = curl_init($url);
	    curl_setopt($ch, CURLOPT_FILE, $fp);
	 
	    $data = curl_exec($ch);
	 
	    curl_close($ch);
	    fclose($fp);
		}
		$file = $local_file;
	}

	//get file content and put it into response 
	if (file_exists($file)) {
		//file_put_contents($base_path."/download_log.txt", "\nstarted on ".$date.": ".$_GET["pack"], FILE_APPEND);
		/*
    header('Content-Description: File Transfer');
    header('Content-Type: application/octet-stream');
    header('Content-Disposition: attachment; filename='.basename($file));
    header('Expires: 0');
    header('Cache-Control: must-revalidate');
    header('Pragma: public');
    header('Content-Length: ' . filesize($file));
    ob_clean();
    flush();
    readfile($file);*/
		$file_direct_url = str_replace($base_path,$base_url,$file);
    header('Location: '.$file_direct_url.'?direct');//try access the file directly by requested url
    //$date_fin = date('Y-m-d\tH:i:s');
    file_put_contents($base_path."/download_log.txt", "\n".$date."\t".$_GET["pack"], FILE_APPEND);
    saveDownloadLog($_GET["pack"],"normal");
    exit;
	}else{
		//if file wasn't found in configuration above there is still a chance it exists by direct requested url
		if($_GET["direct"] || $_GET["url"]=="" || strpos($_GET["url"],"?direct")!==false){
			file_put_contents($base_path."/download_log.txt", "\n".$date."\t".$_GET["pack"]."\tNot Found", FILE_APPEND);
			saveDownloadLog($_GET["pack"],"notfound");
			header('Location: /docs/404.shtml');
		}else{
			file_put_contents($base_path."/download_log.txt", "\n".$date."\t".$_GET["pack"]."\tDirect Access", FILE_APPEND);
			saveDownloadLog($_GET["pack"],"direct");
			header('Location: /x'.$_GET["url"].'?direct');//try access the file directly by requested url
		}
		die();
	}
	
	function saveDownloadLog($pack,$state){ 
		return;
		require_once("./config.php");
		$db = new DB();
		$conn = new mysqli($db->host, $db->user, $db->pass, $db->base);
		// Check connection
		if ($conn->connect_error) {
    		die("Connection failed: " . $conn->connect_error);
		} 
		$sql = "INSERT INTO regular_downloads (package,state) VALUES ('".$pack."','".$state."')";

    	if ($conn->query($sql) === TRUE) {
        	//error_log("Succesfull insert: ".$sql, 1, "nb@dhtmlx.com",$hdrs);
    	} 
    	$conn->close();
	}
	
?>