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<?php |
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/** |
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* @author Threema GmbH |
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* @copyright Copyright (c) 2015-2016 Threema GmbH |
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*/ |
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namespace Threema\MsgApi\PublicKeyStores; |
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use Threema\Core\Exception; |
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use Threema\MsgApi\PublicKeyStore; |
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/** |
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* Store the PublicKeys in a ascii file |
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* |
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* @package Threema\MsgApi\PublicKeyStores |
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*/ |
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class File extends PublicKeyStore { |
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/** |
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* @var string |
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*/ |
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private $file; |
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/** |
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* @param string $file Valid, read and writable file |
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* @throws Exception if the file does not exist or not writable |
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*/ |
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public function __construct($file) { |
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if(false === is_writable($file)) { |
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throw new Exception('file '.$file.' does not exist or is not writable'); |
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} |
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$this->file = $file; |
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} |
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/** |
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* return null if the public key not found in the store |
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* @param string $threemaId |
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* @return null|string |
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* @throws Exception |
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*/ |
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public function findPublicKey($threemaId) { |
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$storeHandle = fopen($this->file, 'r'); |
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if(false === $storeHandle) { |
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throw new Exception('could not open file '.$this->file); |
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} |
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else { |
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$threemaId = strtoupper($threemaId); |
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$publicKey = null; |
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while (!feof($storeHandle)) { |
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$buffer = fgets($storeHandle, 4096); |
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if(substr($buffer, 0, 8) == $threemaId) { |
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$publicKey = str_replace("\n", '', substr($buffer, 8)); |
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continue; |
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} |
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// Process buffer here.. |
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} |
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fclose($storeHandle); |
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return $publicKey; |
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} |
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} |
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/** |
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* save a public key |
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* @param string $threemaId |
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* @param string $publicKey |
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* @return bool |
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*/ |
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public function savePublicKey($threemaId, $publicKey) { |
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return file_put_contents($this->file, $threemaId.$publicKey."\n", FILE_APPEND) !== false; |
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} |
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/** |
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* Initialize a new File Public Key Store |
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* @param string $path the file will be created if it does not exist |
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* @return File |
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*/ |
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public static function create($path) { |
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if(false === file_exists($path)) { |
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//touch |
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touch($path); |
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} |
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return new File($path); |
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} |
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} |
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rugk /
threema-msgapi-sdk-php
