/phpBB/phpbb/db/extractor/mssql_extractor.php
PHP | 415 lines | 341 code | 38 blank | 36 comment | 32 complexity | a44e733df99530853f6c970b84d50a38 MD5 | raw file
Possible License(s): GPL-3.0, AGPL-1.0
- <?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 mssql_extractor extends base_extractor
- {
- /**
- * 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();
- }
- $this->flush("COMMIT\nGO\n");
- parent::write_end();
- }
- /**
- * {@inheritdoc}
- */
- public function write_start($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";
- $sql_data .= "GO\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";
- $sql_data .= "IF OBJECT_ID(N'$table_name', N'U') IS NOT NULL\n";
- $sql_data .= "DROP TABLE $table_name;\n";
- $sql_data .= "GO\n";
- $sql_data .= "\nCREATE TABLE [$table_name] (\n";
- $rows = array();
- $text_flag = false;
- $sql = "SELECT COLUMN_NAME, COLUMN_DEFAULT, IS_NULLABLE, DATA_TYPE, CHARACTER_MAXIMUM_LENGTH, COLUMNPROPERTY(object_id(TABLE_NAME), COLUMN_NAME, 'IsIdentity') as IS_IDENTITY
- FROM INFORMATION_SCHEMA.COLUMNS
- WHERE TABLE_NAME = '$table_name'";
- $result = $this->db->sql_query($sql);
- while ($row = $this->db->sql_fetchrow($result))
- {
- $line = "\t[{$row['COLUMN_NAME']}] [{$row['DATA_TYPE']}]";
- if ($row['DATA_TYPE'] == 'text')
- {
- $text_flag = true;
- }
- if ($row['IS_IDENTITY'])
- {
- $line .= ' IDENTITY (1 , 1)';
- }
- if ($row['CHARACTER_MAXIMUM_LENGTH'] && $row['DATA_TYPE'] !== 'text')
- {
- $line .= ' (' . $row['CHARACTER_MAXIMUM_LENGTH'] . ')';
- }
- if ($row['IS_NULLABLE'] == 'YES')
- {
- $line .= ' NULL';
- }
- else
- {
- $line .= ' NOT NULL';
- }
- if ($row['COLUMN_DEFAULT'])
- {
- $line .= ' DEFAULT ' . $row['COLUMN_DEFAULT'];
- }
- $rows[] = $line;
- }
- $this->db->sql_freeresult($result);
- $sql_data .= implode(",\n", $rows);
- $sql_data .= "\n) ON [PRIMARY]";
- if ($text_flag)
- {
- $sql_data .= " TEXTIMAGE_ON [PRIMARY]";
- }
- $sql_data .= "\nGO\n\n";
- $rows = array();
- $sql = "SELECT CONSTRAINT_NAME, COLUMN_NAME
- FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE
- WHERE TABLE_NAME = '$table_name'";
- $result = $this->db->sql_query($sql);
- while ($row = $this->db->sql_fetchrow($result))
- {
- if (!count($rows))
- {
- $sql_data .= "ALTER TABLE [$table_name] WITH NOCHECK ADD\n";
- $sql_data .= "\tCONSTRAINT [{$row['CONSTRAINT_NAME']}] PRIMARY KEY CLUSTERED \n\t(\n";
- }
- $rows[] = "\t\t[{$row['COLUMN_NAME']}]";
- }
- if (count($rows))
- {
- $sql_data .= implode(",\n", $rows);
- $sql_data .= "\n\t) ON [PRIMARY] \nGO\n";
- }
- $this->db->sql_freeresult($result);
- $index = array();
- $sql = "EXEC sp_statistics '$table_name'";
- $result = $this->db->sql_query($sql);
- while ($row = $this->db->sql_fetchrow($result))
- {
- if ($row['TYPE'] == 3)
- {
- $index[$row['INDEX_NAME']][] = '[' . $row['COLUMN_NAME'] . ']';
- }
- }
- $this->db->sql_freeresult($result);
- foreach ($index as $index_name => $column_name)
- {
- $index[$index_name] = implode(', ', $column_name);
- }
- foreach ($index as $index_name => $columns)
- {
- $sql_data .= "\nCREATE INDEX [$index_name] ON [$table_name]($columns) ON [PRIMARY]\nGO\n";
- }
- $this->flush($sql_data);
- }
- /**
- * {@inheritdoc}
- */
- public function write_data($table_name)
- {
- if (!$this->is_initialized)
- {
- throw new extractor_not_initialized_exception();
- }
- if ($this->db->get_sql_layer() === 'mssqlnative')
- {
- $this->write_data_mssqlnative($table_name);
- }
- else
- {
- $this->write_data_odbc($table_name);
- }
- }
- /**
- * Extracts data from database table (for MSSQL Native driver)
- *
- * @param string $table_name name of the database table
- * @return null
- * @throws \phpbb\db\extractor\exception\extractor_not_initialized_exception when calling this function before init_extractor()
- */
- protected function write_data_mssqlnative($table_name)
- {
- if (!$this->is_initialized)
- {
- throw new extractor_not_initialized_exception();
- }
- $ary_type = $ary_name = array();
- $ident_set = false;
- $sql_data = '';
- // Grab all of the data from current table.
- $sql = "SELECT * FROM $table_name";
- $this->db->mssqlnative_set_query_options(array('Scrollable' => SQLSRV_CURSOR_STATIC));
- $result = $this->db->sql_query($sql);
- $retrieved_data = $this->db->mssqlnative_num_rows($result);
- if (!$retrieved_data)
- {
- $this->db->sql_freeresult($result);
- return;
- }
- $sql = "SELECT COLUMN_NAME, DATA_TYPE
- FROM INFORMATION_SCHEMA.COLUMNS
- WHERE INFORMATION_SCHEMA.COLUMNS.TABLE_NAME = '" . $this->db->sql_escape($table_name) . "'";
- $result_fields = $this->db->sql_query($sql);
- $i_num_fields = 0;
- while ($row = $this->db->sql_fetchrow($result_fields))
- {
- $ary_type[$i_num_fields] = $row['DATA_TYPE'];
- $ary_name[$i_num_fields] = $row['COLUMN_NAME'];
- $i_num_fields++;
- }
- $this->db->sql_freeresult($result_fields);
- $sql = "SELECT 1 as has_identity
- FROM INFORMATION_SCHEMA.COLUMNS
- WHERE COLUMNPROPERTY(object_id('$table_name'), COLUMN_NAME, 'IsIdentity') = 1";
- $result2 = $this->db->sql_query($sql);
- $row2 = $this->db->sql_fetchrow($result2);
- if (!empty($row2['has_identity']))
- {
- $sql_data .= "\nSET IDENTITY_INSERT $table_name ON\nGO\n";
- $ident_set = true;
- }
- $this->db->sql_freeresult($result2);
- while ($row = $this->db->sql_fetchrow($result))
- {
- $schema_vals = $schema_fields = array();
- // Build the SQL statement to recreate the data.
- for ($i = 0; $i < $i_num_fields; $i++)
- {
- $str_val = $row[$ary_name[$i]];
- // defaults to type number - better quote just to be safe, so check for is_int too
- if (is_int($ary_type[$i]) || preg_match('#char|text|bool|varbinary#i', $ary_type[$i]))
- {
- $str_quote = '';
- $str_empty = "''";
- $str_val = sanitize_data_mssql(str_replace("'", "''", $str_val));
- }
- else if (preg_match('#date|timestamp#i', $ary_type[$i]))
- {
- if (empty($str_val))
- {
- $str_quote = '';
- }
- else
- {
- $str_quote = "'";
- }
- }
- else
- {
- $str_quote = '';
- $str_empty = 'NULL';
- }
- if (empty($str_val) && $str_val !== '0' && !(is_int($str_val) || is_float($str_val)))
- {
- $str_val = $str_empty;
- }
- $schema_vals[$i] = $str_quote . $str_val . $str_quote;
- $schema_fields[$i] = $ary_name[$i];
- }
- // Take the ordered fields and their associated data and build it
- // into a valid sql statement to recreate that field in the data.
- $sql_data .= "INSERT INTO $table_name (" . implode(', ', $schema_fields) . ') VALUES (' . implode(', ', $schema_vals) . ");\nGO\n";
- $this->flush($sql_data);
- $sql_data = '';
- }
- $this->db->sql_freeresult($result);
- if ($ident_set)
- {
- $sql_data .= "\nSET IDENTITY_INSERT $table_name OFF\nGO\n";
- }
- $this->flush($sql_data);
- }
- /**
- * Extracts data from database table (for ODBC driver)
- *
- * @param string $table_name name of the database table
- * @return null
- * @throws \phpbb\db\extractor\exception\extractor_not_initialized_exception when calling this function before init_extractor()
- */
- protected function write_data_odbc($table_name)
- {
- if (!$this->is_initialized)
- {
- throw new extractor_not_initialized_exception();
- }
- $ary_type = $ary_name = array();
- $ident_set = false;
- $sql_data = '';
- // Grab all of the data from current table.
- $sql = "SELECT *
- FROM $table_name";
- $result = $this->db->sql_query($sql);
- $retrieved_data = odbc_num_rows($result);
- if ($retrieved_data)
- {
- $sql = "SELECT 1 as has_identity
- FROM INFORMATION_SCHEMA.COLUMNS
- WHERE COLUMNPROPERTY(object_id('$table_name'), COLUMN_NAME, 'IsIdentity') = 1";
- $result2 = $this->db->sql_query($sql);
- $row2 = $this->db->sql_fetchrow($result2);
- if (!empty($row2['has_identity']))
- {
- $sql_data .= "\nSET IDENTITY_INSERT $table_name ON\nGO\n";
- $ident_set = true;
- }
- $this->db->sql_freeresult($result2);
- }
- $i_num_fields = odbc_num_fields($result);
- for ($i = 0; $i < $i_num_fields; $i++)
- {
- $ary_type[$i] = odbc_field_type($result, $i + 1);
- $ary_name[$i] = odbc_field_name($result, $i + 1);
- }
- while ($row = $this->db->sql_fetchrow($result))
- {
- $schema_vals = $schema_fields = array();
- // Build the SQL statement to recreate the data.
- for ($i = 0; $i < $i_num_fields; $i++)
- {
- $str_val = $row[$ary_name[$i]];
- if (preg_match('#char|text|bool|varbinary#i', $ary_type[$i]))
- {
- $str_quote = '';
- $str_empty = "''";
- $str_val = sanitize_data_mssql(str_replace("'", "''", $str_val));
- }
- else if (preg_match('#date|timestamp#i', $ary_type[$i]))
- {
- if (empty($str_val))
- {
- $str_quote = '';
- }
- else
- {
- $str_quote = "'";
- }
- }
- else
- {
- $str_quote = '';
- $str_empty = 'NULL';
- }
- if (empty($str_val) && $str_val !== '0' && !(is_int($str_val) || is_float($str_val)))
- {
- $str_val = $str_empty;
- }
- $schema_vals[$i] = $str_quote . $str_val . $str_quote;
- $schema_fields[$i] = $ary_name[$i];
- }
- // Take the ordered fields and their associated data and build it
- // into a valid sql statement to recreate that field in the data.
- $sql_data .= "INSERT INTO $table_name (" . implode(', ', $schema_fields) . ') VALUES (' . implode(', ', $schema_vals) . ");\nGO\n";
- $this->flush($sql_data);
- $sql_data = '';
- }
- $this->db->sql_freeresult($result);
- if ($retrieved_data && $ident_set)
- {
- $sql_data .= "\nSET IDENTITY_INSERT $table_name OFF\nGO\n";
- }
- $this->flush($sql_data);
- }
- }