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| 1 | <?php |
| 2 | /** |
| 3 | * |
| 4 | * This file is part of the phpBB Forum Software package. |
| 5 | * |
| 6 | * @copyright (c) phpBB Limited <https://www.phpbb.com> |
| 7 | * @license GNU General Public License, version 2 (GPL-2.0) |
| 8 | * |
| 9 | * For full copyright and license information, please see |
| 10 | * the docs/CREDITS.txt file. |
| 11 | * |
| 12 | */ |
| 13 | |
| 14 | namespace phpbb\db\extractor; |
| 15 | |
| 16 | use phpbb\db\extractor\exception\extractor_not_initialized_exception; |
| 17 | |
| 18 | class sqlite3_extractor extends base_extractor |
| 19 | { |
| 20 | /** |
| 21 | * {@inheritdoc} |
| 22 | */ |
| 23 | public function write_start($table_prefix) |
| 24 | { |
| 25 | if (!$this->is_initialized) |
| 26 | { |
| 27 | throw new extractor_not_initialized_exception(); |
| 28 | } |
| 29 | |
| 30 | $sql_data = "--\n"; |
| 31 | $sql_data .= "-- phpBB Backup Script\n"; |
| 32 | $sql_data .= "-- Dump of tables for $table_prefix\n"; |
| 33 | $sql_data .= "-- DATE : " . gmdate("d-m-Y H:i:s", $this->time) . " GMT\n"; |
| 34 | $sql_data .= "--\n"; |
| 35 | $sql_data .= "BEGIN TRANSACTION;\n"; |
| 36 | $this->flush($sql_data); |
| 37 | } |
| 38 | |
| 39 | /** |
| 40 | * {@inheritdoc} |
| 41 | */ |
| 42 | public function write_table($table_name) |
| 43 | { |
| 44 | if (!$this->is_initialized) |
| 45 | { |
| 46 | throw new extractor_not_initialized_exception(); |
| 47 | } |
| 48 | |
| 49 | $sql_data = '-- Table: ' . $table_name . "\n"; |
| 50 | $sql_data .= "DROP TABLE $table_name;\n"; |
| 51 | |
| 52 | $sql = "SELECT sql |
| 53 | FROM sqlite_master |
| 54 | WHERE type = 'table' |
| 55 | AND name = '" . $this->db->sql_escape($table_name) . "' |
| 56 | ORDER BY name ASC;"; |
| 57 | $result = $this->db->sql_query($sql); |
| 58 | $row = $this->db->sql_fetchrow($result); |
| 59 | $this->db->sql_freeresult($result); |
| 60 | |
| 61 | // Create Table |
| 62 | $sql_data .= $row['sql'] . ";\n"; |
| 63 | |
| 64 | $result = $this->db->sql_query("PRAGMA index_list('" . $this->db->sql_escape($table_name) . "');"); |
| 65 | |
| 66 | while ($row = $this->db->sql_fetchrow($result)) |
| 67 | { |
| 68 | if (strpos($row['name'], 'autoindex') !== false) |
| 69 | { |
| 70 | continue; |
| 71 | } |
| 72 | |
| 73 | $result2 = $this->db->sql_query("PRAGMA index_info('" . $this->db->sql_escape($row['name']) . "');"); |
| 74 | |
| 75 | $fields = array(); |
| 76 | while ($row2 = $this->db->sql_fetchrow($result2)) |
| 77 | { |
| 78 | $fields[] = $row2['name']; |
| 79 | } |
| 80 | $this->db->sql_freeresult($result2); |
| 81 | |
| 82 | $sql_data .= 'CREATE ' . ($row['unique'] ? 'UNIQUE ' : '') . 'INDEX ' . $row['name'] . ' ON ' . $table_name . ' (' . implode(', ', $fields) . ");\n"; |
| 83 | } |
| 84 | $this->db->sql_freeresult($result); |
| 85 | |
| 86 | $this->flush($sql_data . "\n"); |
| 87 | } |
| 88 | |
| 89 | /** |
| 90 | * {@inheritdoc} |
| 91 | */ |
| 92 | public function write_data($table_name) |
| 93 | { |
| 94 | if (!$this->is_initialized) |
| 95 | { |
| 96 | throw new extractor_not_initialized_exception(); |
| 97 | } |
| 98 | |
| 99 | $result = $this->db->sql_query("PRAGMA table_info('" . $this->db->sql_escape($table_name) . "');"); |
| 100 | |
| 101 | $col_types = array(); |
| 102 | while ($row = $this->db->sql_fetchrow($result)) |
| 103 | { |
| 104 | $col_types[$row['name']] = $row['type']; |
| 105 | } |
| 106 | $this->db->sql_freeresult($result); |
| 107 | |
| 108 | $sql_insert = 'INSERT INTO ' . $table_name . ' (' . implode(', ', array_keys($col_types)) . ') VALUES ('; |
| 109 | |
| 110 | $sql = "SELECT * |
| 111 | FROM $table_name"; |
| 112 | $result = $this->db->sql_query($sql); |
| 113 | |
| 114 | while ($row = $this->db->sql_fetchrow($result)) |
| 115 | { |
| 116 | foreach ($row as $column_name => $column_data) |
| 117 | { |
| 118 | if (is_null($column_data)) |
| 119 | { |
| 120 | $row[$column_name] = 'NULL'; |
| 121 | } |
| 122 | else if ($column_data === '') |
| 123 | { |
| 124 | $row[$column_name] = "''"; |
| 125 | } |
| 126 | else if (stripos($col_types[$column_name], 'text') !== false || stripos($col_types[$column_name], 'char') !== false || stripos($col_types[$column_name], 'blob') !== false) |
| 127 | { |
| 128 | $row[$column_name] = sanitize_data_generic(str_replace("'", "''", $column_data)); |
| 129 | } |
| 130 | } |
| 131 | $this->flush($sql_insert . implode(', ', $row) . ");\n"); |
| 132 | } |
| 133 | } |
| 134 | |
| 135 | /** |
| 136 | * Writes closing line(s) to database backup |
| 137 | * |
| 138 | * @return void |
| 139 | * @throws extractor_not_initialized_exception when calling this function before init_extractor() |
| 140 | */ |
| 141 | public function write_end() |
| 142 | { |
| 143 | if (!$this->is_initialized) |
| 144 | { |
| 145 | throw new extractor_not_initialized_exception(); |
| 146 | } |
| 147 | |
| 148 | $this->flush("COMMIT;\n"); |
| 149 | parent::write_end(); |
| 150 | } |
| 151 | } |