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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\extractor_not_initialized_exception; | |
| class sqlite3_extractor extends base_extractor | |
| { | |
| /** | |
| * {@inheritdoc} | |
| */ | |
| public function write_start($table_prefix) | |
| { | |
| if (!$this->is_initialized) | |
| { | |
| throw new extractor_not_initialized_exception(); | |
| } | |
| $sql_data = "--\n"; | |
| $sql_data .= "-- phpBB Backup Script\n"; | |
| $sql_data .= "-- Dump of tables for $table_prefix\n"; | |
| $sql_data .= "-- DATE : " . gmdate("d-m-Y H:i:s", $this->time) . " GMT\n"; | |
| $sql_data .= "--\n"; | |
| $sql_data .= "BEGIN TRANSACTION;\n"; | |
| $this->flush($sql_data); | |
| } | |
| /** | |
| * {@inheritdoc} | |
| */ | |
| public function write_table($table_name) | |
| { | |
| if (!$this->is_initialized) | |
| { | |
| throw new extractor_not_initialized_exception(); | |
| } | |
| $sql_data = '-- Table: ' . $table_name . "\n"; | |
| $sql_data .= "DROP TABLE $table_name;\n"; | |
| $sql = "SELECT sql | |
| FROM sqlite_master | |
| WHERE type = 'table' | |
| AND name = '" . $this->db->sql_escape($table_name) . "' | |
| ORDER BY name ASC;"; | |
| $result = $this->db->sql_query($sql); | |
| $row = $this->db->sql_fetchrow($result); | |
| $this->db->sql_freeresult($result); | |
| // Create Table | |
| $sql_data .= $row['sql'] . ";\n"; | |
| $result = $this->db->sql_query("PRAGMA index_list('" . $this->db->sql_escape($table_name) . "');"); | |
| while ($row = $this->db->sql_fetchrow($result)) | |
| { | |
| if (strpos($row['name'], 'autoindex') !== false) | |
| { | |
| continue; | |
| } | |
| $result2 = $this->db->sql_query("PRAGMA index_info('" . $this->db->sql_escape($row['name']) . "');"); | |
| $fields = array(); | |
| while ($row2 = $this->db->sql_fetchrow($result2)) | |
| { | |
| $fields[] = $row2['name']; | |
| } | |
| $this->db->sql_freeresult($result2); | |
| $sql_data .= 'CREATE ' . ($row['unique'] ? 'UNIQUE ' : '') . 'INDEX ' . $row['name'] . ' ON ' . $table_name . ' (' . implode(', ', $fields) . ");\n"; | |
| } | |
| $this->db->sql_freeresult($result); | |
| $this->flush($sql_data . "\n"); | |
| } | |
| /** | |
| * {@inheritdoc} | |
| */ | |
| public function write_data($table_name) | |
| { | |
| if (!$this->is_initialized) | |
| { | |
| throw new extractor_not_initialized_exception(); | |
| } | |
| $result = $this->db->sql_query("PRAGMA table_info('" . $this->db->sql_escape($table_name) . "');"); | |
| $col_types = array(); | |
| while ($row = $this->db->sql_fetchrow($result)) | |
| { | |
| $col_types[$row['name']] = $row['type']; | |
| } | |
| $this->db->sql_freeresult($result); | |
| $sql_insert = 'INSERT INTO ' . $table_name . ' (' . implode(', ', array_keys($col_types)) . ') VALUES ('; | |
| $sql = "SELECT * | |
| FROM $table_name"; | |
| $result = $this->db->sql_query($sql); | |
| while ($row = $this->db->sql_fetchrow($result)) | |
| { | |
| foreach ($row as $column_name => $column_data) | |
| { | |
| if (is_null($column_data)) | |
| { | |
| $row[$column_name] = 'NULL'; | |
| } | |
| else if ($column_data === '') | |
| { | |
| $row[$column_name] = "''"; | |
| } | |
| else if (stripos($col_types[$column_name], 'text') !== false || stripos($col_types[$column_name], 'char') !== false || stripos($col_types[$column_name], 'blob') !== false) | |
| { | |
| $row[$column_name] = sanitize_data_generic(str_replace("'", "''", $column_data)); | |
| } | |
| } | |
| $this->flush($sql_insert . implode(', ', $row) . ");\n"); | |
| } | |
| } | |
| /** | |
| * Writes closing line(s) to database backup | |
| * | |
| * @return null | |
| * @throws \phpbb\db\extractor\exception\extractor_not_initialized_exception when calling this function before init_extractor() | |
| */ | |
| public function write_end() | |
| { | |
| if (!$this->is_initialized) | |
| { | |
| throw new extractor_not_initialized_exception(); | |
| } | |
| $this->flush("COMMIT;\n"); | |
| parent::write_end(); | |
| } | |
| } |