1 files changed, 415 insertions, 0 deletions
diff --git a/phpBB/phpbb/db/extractor/mssql_extractor.php b/phpBB/phpbb/db/extractor/mssql_extractor.php
new file mode 100644
index 0000000000..4eeab4780e
--- /dev/null
+++ b/phpBB/phpbb/db/extractor/mssql_extractor.php
@@ -0,0 +1,415 @@
+<?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);
+	}
+}