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|
<?php
namespace Sabre\CardDAV;
use Sabre\DAV;
use Sabre\VObject;
use Sabre\HTTP\RequestInterface;
use Sabre\HTTP\ResponseInterface;
/**
* VCF Exporter
*
* This plugin adds the ability to export entire address books as .vcf files.
* This is useful for clients that don't support CardDAV yet. They often do
* support vcf files.
*
* @copyright Copyright (C) fruux GmbH (https://fruux.com/)
* @author Evert Pot (http://evertpot.com/)
* @author Thomas Tanghus (http://tanghus.net/)
* @license http://sabre.io/license/ Modified BSD License
*/
class VCFExportPlugin extends DAV\ServerPlugin {
/**
* Reference to Server class
*
* @var Sabre\DAV\Server
*/
protected $server;
/**
* Initializes the plugin and registers event handlers
*
* @param DAV\Server $server
* @return void
*/
function initialize(DAV\Server $server) {
$this->server = $server;
$this->server->on('method:GET', [$this, 'httpGet'], 90);
$server->on('browserButtonActions', function($path, $node, &$actions) {
if ($node instanceof IAddressBook) {
$actions .= '<a href="' . htmlspecialchars($path, ENT_QUOTES, 'UTF-8') . '?export"><span class="oi" data-glyph="book"></span></a>';
}
});
}
/**
* Intercepts GET requests on addressbook urls ending with ?export.
*
* @param RequestInterface $request
* @param ResponseInterface $response
* @return bool
*/
function httpGet(RequestInterface $request, ResponseInterface $response) {
$queryParams = $request->getQueryParameters();
if (!array_key_exists('export', $queryParams)) return;
$path = $request->getPath();
$node = $this->server->tree->getNodeForPath($path);
if (!($node instanceof IAddressBook)) return;
$this->server->transactionType = 'get-addressbook-export';
// Checking ACL, if available.
if ($aclPlugin = $this->server->getPlugin('acl')) {
$aclPlugin->checkPrivileges($path, '{DAV:}read');
}
$nodes = $this->server->getPropertiesForPath($path, [
'{' . Plugin::NS_CARDDAV . '}address-data',
], 1);
$format = 'text/directory';
$output = null;
$filenameExtension = null;
switch ($format) {
case 'text/directory':
$output = $this->generateVCF($nodes);
$filenameExtension = '.vcf';
break;
}
$filename = preg_replace(
'/[^a-zA-Z0-9-_ ]/um',
'',
$node->getName()
);
$filename .= '-' . date('Y-m-d') . $filenameExtension;
$response->setHeader('Content-Disposition', 'attachment; filename="' . $filename . '"');
$response->setHeader('Content-Type', $format);
$response->setStatus(200);
$response->setBody($output);
// Returning false to break the event chain
return false;
}
/**
* Merges all vcard objects, and builds one big vcf export
*
* @param array $nodes
* @return string
*/
function generateVCF(array $nodes) {
$output = "";
foreach ($nodes as $node) {
if (!isset($node[200]['{' . Plugin::NS_CARDDAV . '}address-data'])) {
continue;
}
$nodeData = $node[200]['{' . Plugin::NS_CARDDAV . '}address-data'];
// Parsing this node so VObject can clean up the output.
$vcard = VObject\Reader::read($nodeData);
$output .= $vcard->serialize();
// Destroy circular references to PHP will GC the object.
$vcard->destroy();
}
return $output;
}
/**
* Returns a plugin name.
*
* Using this name other plugins will be able to access other plugins
* using \Sabre\DAV\Server::getPlugin
*
* @return string
*/
function getPluginName() {
return 'vcf-export';
}
/**
* Returns a bunch of meta-data about the plugin.
*
* Providing this information is optional, and is mainly displayed by the
* Browser plugin.
*
* The description key in the returned array may contain html and will not
* be sanitized.
*
* @return array
*/
function getPluginInfo() {
return [
'name' => $this->getPluginName(),
'description' => 'Adds the ability to export CardDAV addressbooks as a single vCard file.',
'link' => 'http://sabre.io/dav/vcf-export-plugin/',
];
}
}
|
