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| <?php | |
| /** | |
| * | |
| * This file is part of the phpBB Forum Software package. | |
| * | |
| * @copyright (c) phpBB Limited <https://www.phpbb.com> | |
| * @license GNU General Public License, version 2 (GPL-2.0) | |
| * | |
| * For full copyright and license information, please see | |
| * the docs/CREDITS.txt file. | |
| * | |
| */ | |
| namespace phpbb\db\extractor; | |
| use phpbb\db\extractor\exception\invalid_format_exception; | |
| use phpbb\db\extractor\exception\extractor_not_initialized_exception; | |
| /** | |
| * Abstract base class for database extraction | |
| */ | |
| abstract class base_extractor implements extractor_interface | |
| { | |
| /** | |
| * @var string phpBB root path | |
| */ | |
| protected $phpbb_root_path; | |
| /** | |
| * @var \phpbb\request\request_interface | |
| */ | |
| protected $request; | |
| /** | |
| * @var \phpbb\db\driver\driver_interface | |
| */ | |
| protected $db; | |
| /** | |
| * @var bool | |
| */ | |
| protected $download; | |
| /** | |
| * @var bool | |
| */ | |
| protected $store; | |
| /** | |
| * @var int | |
| */ | |
| protected $time; | |
| /** | |
| * @var string | |
| */ | |
| protected $format; | |
| /** | |
| * @var resource | |
| */ | |
| protected $fp; | |
| /** | |
| * @var string | |
| */ | |
| protected $write; | |
| /** | |
| * @var string | |
| */ | |
| protected $close; | |
| /** | |
| * @var bool | |
| */ | |
| protected $run_comp; | |
| /** | |
| * @var bool | |
| */ | |
| protected $is_initialized; | |
| /** | |
| * Constructor | |
| * | |
| * @param string $phpbb_root_path | |
| * @param \phpbb\request\request_interface $request | |
| * @param \phpbb\db\driver\driver_interface $db | |
| */ | |
| public function __construct($phpbb_root_path, \phpbb\request\request_interface $request, \phpbb\db\driver\driver_interface $db) | |
| { | |
| $this->phpbb_root_path = $phpbb_root_path; | |
| $this->request = $request; | |
| $this->db = $db; | |
| $this->fp = null; | |
| $this->is_initialized = false; | |
| } | |
| /** | |
| * {@inheritdoc} | |
| */ | |
| public function init_extractor($format, $filename, $time, $download = false, $store = false) | |
| { | |
| $this->download = $download; | |
| $this->store = $store; | |
| $this->time = $time; | |
| $this->format = $format; | |
| switch ($format) | |
| { | |
| case 'text': | |
| $ext = '.sql'; | |
| $open = 'fopen'; | |
| $this->write = 'fwrite'; | |
| $this->close = 'fclose'; | |
| $mimetype = 'text/x-sql'; | |
| break; | |
| case 'bzip2': | |
| $ext = '.sql.bz2'; | |
| $open = 'bzopen'; | |
| $this->write = 'bzwrite'; | |
| $this->close = 'bzclose'; | |
| $mimetype = 'application/x-bzip2'; | |
| break; | |
| case 'gzip': | |
| $ext = '.sql.gz'; | |
| $open = 'gzopen'; | |
| $this->write = 'gzwrite'; | |
| $this->close = 'gzclose'; | |
| $mimetype = 'application/x-gzip'; | |
| break; | |
| default: | |
| throw new invalid_format_exception(); | |
| break; | |
| } | |
| if ($download === true) | |
| { | |
| $name = $filename . $ext; | |
| header('Cache-Control: private, no-cache'); | |
| header("Content-Type: $mimetype; name=\"$name\""); | |
| header("Content-disposition: attachment; filename=$name"); | |
| switch ($format) | |
| { | |
| case 'bzip2': | |
| ob_start(); | |
| break; | |
| case 'gzip': | |
| if (strpos($this->request->header('Accept-Encoding'), 'gzip') !== false && strpos(strtolower($this->request->header('User-Agent')), 'msie') === false) | |
| { | |
| ob_start('ob_gzhandler'); | |
| } | |
| else | |
| { | |
| $this->run_comp = true; | |
| } | |
| break; | |
| } | |
| } | |
| if ($store === true) | |
| { | |
| $file = $this->phpbb_root_path . 'store/' . $filename . $ext; | |
| $this->fp = $open($file, 'w'); | |
| if (!$this->fp) | |
| { | |
| trigger_error('FILE_WRITE_FAIL', E_USER_ERROR); | |
| } | |
| } | |
| $this->is_initialized = true; | |
| } | |
| /** | |
| * {@inheritdoc} | |
| */ | |
| public function write_end() | |
| { | |
| static $close; | |
| if (!$this->is_initialized) | |
| { | |
| throw new extractor_not_initialized_exception(); | |
| } | |
| if ($this->store) | |
| { | |
| if ($close === null) | |
| { | |
| $close = $this->close; | |
| } | |
| $close($this->fp); | |
| } | |
| // bzip2 must be written all the way at the end | |
| if ($this->download && $this->format === 'bzip2') | |
| { | |
| $c = ob_get_clean(); | |
| echo bzcompress($c); | |
| } | |
| } | |
| /** | |
| * {@inheritdoc} | |
| */ | |
| public function flush($data) | |
| { | |
| static $write; | |
| if (!$this->is_initialized) | |
| { | |
| throw new extractor_not_initialized_exception(); | |
| } | |
| if ($this->store === true) | |
| { | |
| if ($write === null) | |
| { | |
| $write = $this->write; | |
| } | |
| $write($this->fp, $data); | |
| } | |
| if ($this->download === true) | |
| { | |
| if ($this->format === 'bzip2' || $this->format === 'text' || ($this->format === 'gzip' && !$this->run_comp)) | |
| { | |
| echo $data; | |
| } | |
| // we can write the gzip data as soon as we get it | |
| if ($this->format === 'gzip') | |
| { | |
| if ($this->run_comp) | |
| { | |
| echo gzencode($data); | |
| } | |
| else | |
| { | |
| ob_flush(); | |
| flush(); | |
| } | |
| } | |
| } | |
| } | |
| } |