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<?php |
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/** |
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* ownCloud - files_antivirus |
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* |
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* @author Manuel Deglado |
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* @copyright 2012 Manuel Deglado [email protected] |
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* |
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* This library is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE |
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* License as published by the Free Software Foundation; either |
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* version 3 of the License, or any later version. |
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* |
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* This library 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 AFFERO GENERAL PUBLIC LICENSE for more details. |
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* |
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* You should have received a copy of the GNU Affero General Public |
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* License along with this library. If not, see <http://www.gnu.org/licenses/>. |
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* |
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*/ |
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namespace OCA\Files_Antivirus; |
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abstract class Scanner { |
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/** |
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* Scan result |
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* @var \OCA\Files_Antivirus\Status |
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*/ |
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protected $status; |
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/** @var int */ |
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protected $byteCount; |
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/** @var resource */ |
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protected $writeHandle; |
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/** @var \OCA\Files_Antivirus\AppConfig */ |
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protected $appConfig; |
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/** |
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* Close used resources |
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*/ |
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abstract protected function shutdownScanner(); |
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public function getStatus(){ |
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if ($this->status instanceof Status){ |
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return $this->status; |
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} |
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return new Status(); |
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} |
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/** |
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* Synchronous scan |
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* @param IScannable $item |
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* @return Status |
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*/ |
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public function scan(IScannable $item) { |
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$this->initScanner(); |
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while (false !== ($chunk = $item->fread())) { |
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$this->writeChunk($chunk); |
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} |
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$this->shutdownScanner(); |
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return $this->getStatus(); |
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} |
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/** |
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* Async scan - prepare resources |
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*/ |
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public function initAsyncScan(){ |
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$this->initScanner(); |
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} |
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/** |
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* Async scan - new portion of data is available |
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* @param string $data |
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*/ |
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public function onAsyncData($data){ |
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$this->writeChunk($data); |
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} |
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/** |
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* Async scan - resource is closed |
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* @return Status |
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*/ |
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public function completeAsyncScan(){ |
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$this->shutdownScanner(); |
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return $this->getStatus(); |
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} |
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/** |
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* Open write handle. etc |
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*/ |
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protected function initScanner(){ |
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$this->status = new Status(); |
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} |
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/** |
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* @param string $chunk |
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*/ |
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protected function writeChunk($chunk){ |
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$this->fwrite( |
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$this->prepareChunk($chunk) |
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); |
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} |
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protected function fwrite($data){ |
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$bytesWritten = @fwrite($this->getWriteHandle(), $data); |
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} |
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/** |
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* Get a resource to write data into |
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* @return resource |
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*/ |
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protected function getWriteHandle(){ |
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return $this->writeHandle; |
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} |
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/** |
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* Prepare chunk (if required) |
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*/ |
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protected function prepareChunk($data){ |
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return $data; |
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} |
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} |
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|
owncloud /
files_antivirus
This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently.
Both the
$myVarassignment in line 1 and the$higherassignment in line 2 are dead. The first because$myVaris never used and the second because$higheris always overwritten for every possible time line.