/*
* Copyright 1999-2017 Alibaba Group Holding Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.alibaba.druid.filter.encoding;
import java.io.Reader;
import java.io.StringReader;
import java.io.UnsupportedEncodingException;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.SQLException;
import java.sql.Types;
import java.util.Properties;
import com.alibaba.druid.filter.FilterAdapter;
import com.alibaba.druid.filter.FilterChain;
import com.alibaba.druid.proxy.jdbc.CallableStatementProxy;
import com.alibaba.druid.proxy.jdbc.ClobProxy;
import com.alibaba.druid.proxy.jdbc.ConnectionProxy;
import com.alibaba.druid.proxy.jdbc.PreparedStatementProxy;
import com.alibaba.druid.proxy.jdbc.ResultSetProxy;
import com.alibaba.druid.proxy.jdbc.StatementProxy;
import com.alibaba.druid.util.Utils;
/**
* @author wenshao [szujobs@hotmail.com]
*/
public class EncodingConvertFilter extends FilterAdapter {
public final static String ATTR_CHARSET_PARAMETER = "ali.charset.param";
public final static String ATTR_CHARSET_CONVERTER = "ali.charset.converter";
private String clientEncoding;
private String serverEncoding;
public ConnectionProxy connection_connect(FilterChain chain, Properties info) throws SQLException {
ConnectionProxy conn = chain.connection_connect(info);
CharsetParameter param = new CharsetParameter();
param.setClientEncoding(info.getProperty(CharsetParameter.CLIENTENCODINGKEY));
param.setServerEncoding(info.getProperty(CharsetParameter.SERVERENCODINGKEY));
if (param.getClientEncoding() == null || "".equalsIgnoreCase(param.getClientEncoding())) {
param.setClientEncoding(clientEncoding);
}
if (param.getServerEncoding() == null || "".equalsIgnoreCase(param.getServerEncoding())) {
param.setServerEncoding(serverEncoding);
}
conn.putAttribute(ATTR_CHARSET_PARAMETER, param);
conn.putAttribute(ATTR_CHARSET_CONVERTER,
new CharsetConvert(param.getClientEncoding(), param.getServerEncoding()));
return conn;
}
@Override
public String resultSet_getString(FilterChain chain, ResultSetProxy result, int columnIndex) throws SQLException {
String value = super.resultSet_getString(chain, result, columnIndex);
return decode(result.getStatementProxy().getConnectionProxy(), value);
}
@Override
public String resultSet_getString(FilterChain chain, ResultSetProxy result, String columnLabel) throws SQLException {
String value = super.resultSet_getString(chain, result, columnLabel);
return decode(result.getStatementProxy().getConnectionProxy(), value);
}
@Override
public Object resultSet_getObject(FilterChain chain, ResultSetProxy result, int columnIndex) throws SQLException {
ResultSet rawResultSet = result.getResultSetRaw();
ResultSetMetaData metadata = rawResultSet.getMetaData();
int columnType = metadata.getColumnType(columnIndex);
Object value = null;
switch (columnType) {
case Types.CHAR:
value = super.resultSet_getString(chain, result, columnIndex);
break;
case Types.CLOB:
value = super.resultSet_getString(chain, result, columnIndex);
break;
case Types.LONGVARCHAR:
value = super.resultSet_getString(chain, result, columnIndex);
break;
case Types.VARCHAR:
value = super.resultSet_getString(chain, result, columnIndex);
break;
default:
value = super.resultSet_getObject(chain, result, columnIndex);
}
return decodeObject(result.getStatementProxy().getConnectionProxy(), value);
}
@Override
public Object resultSet_getObject(FilterChain chain, ResultSetProxy result, int columnIndex,
java.util.Map<String, Class<?>> map) throws SQLException {
ResultSet rawResultSet = result.getResultSetRaw();
ResultSetMetaData metadata = rawResultSet.getMetaData();
int columnType = metadata.getColumnType(columnIndex);
Object value = null;
switch (columnType) {
case Types.CHAR:
value = super.resultSet_getString(chain, result, columnIndex);
break;
case Types.CLOB:
value = super.resultSet_getString(chain, result, columnIndex);
break;
case Types.LONGVARCHAR:
value = super.resultSet_getString(chain, result, columnIndex);
break;
case Types.VARCHAR:
value = super.resultSet_getString(chain, result, columnIndex);
break;
default:
value = super.resultSet_getObject(chain, result, columnIndex, map);
}
return decodeObject(result.getStatementProxy().getConnectionProxy(), value);
}
@Override
public Object resultSet_getObject(FilterChain chain, ResultSetProxy result, String columnLabel) throws SQLException {
ResultSet rawResultSet = result.getResultSetRaw();
ResultSetMetaData metadata = rawResultSet.getMetaData();
int columnIndex = rawResultSet.findColumn(columnLabel);
int columnType = metadata.getColumnType(columnIndex);
Object value = null;
switch (columnType) {
case Types.CHAR:
value = super.resultSet_getString(chain, result, columnLabel);
break;
case Types.CLOB:
value = super.resultSet_getString(chain, result, columnLabel);
break;
case Types.LONGVARCHAR:
value = super.resultSet_getString(chain, result, columnLabel);
break;
case Types.VARCHAR:
value = super.resultSet_getString(chain, result, columnLabel);
break;
default:
value = super.resultSet_getObject(chain, result, columnLabel);
}
return decodeObject(result.getStatementProxy().getConnectionProxy(), value);
}
@Override
public Object resultSet_getObject(FilterChain chain, ResultSetProxy result, String columnLabel,
java.util.Map<String, Class<?>> map) throws SQLException {
ResultSet rawResultSet = result.getResultSetRaw();
ResultSetMetaData metadata = rawResultSet.getMetaData();
int columnIndex = rawResultSet.findColumn(columnLabel);
int columnType = metadata.getColumnType(columnIndex);
Object value = null;
switch (columnType) {
case Types.CHAR:
value = super.resultSet_getString(chain, result, columnLabel);
break;
case Types.CLOB:
value = super.resultSet_getString(chain, result, columnLabel);
break;
case Types.LONGVARCHAR:
value = super.resultSet_getString(chain, result, columnLabel);
break;
case Types.VARCHAR:
value = super.resultSet_getString(chain, result, columnLabel);
break;
default:
value = super.resultSet_getObject(chain, result, columnLabel, map);
}
return decodeObject(result.getStatementProxy().getConnectionProxy(), value);
}
// ///////////
public Object decodeObject(ConnectionProxy connection, Object object) throws SQLException {
if (object instanceof String) {
return decode(connection, (String) object);
}
if (object instanceof Reader) {
Reader reader = (Reader) object;
String text = Utils.read(reader);
return new StringReader(decode(connection, text));
}
return object;
}
public Object decodeObject(CallableStatementProxy stmt, Object object) throws SQLException {
if (object instanceof String) {
return decode(stmt.getConnectionProxy(), (String) object);
}
if (object instanceof Reader) {
Reader reader = (Reader) object;
String text = Utils.read(reader);
return new StringReader(decode(stmt.getConnectionProxy(), text));
}
return object;
}
public String encode(ConnectionProxy connection, String s) throws SQLException {
try {
CharsetConvert charsetConvert = (CharsetConvert) connection.getAttribute(ATTR_CHARSET_CONVERTER);
return charsetConvert.encode(s);
} catch (UnsupportedEncodingException e) {
throw new SQLException(e.getMessage(), e);
}
}
public String decode(ConnectionProxy connection, String s) throws SQLException {
try {
CharsetConvert charsetConvert = (CharsetConvert) connection.getAttribute(ATTR_CHARSET_CONVERTER);
return charsetConvert.decode(s);
} catch (UnsupportedEncodingException e) {
throw new SQLException(e.getMessage(), e);
}
}
// //////////////// Connection
@Override
public PreparedStatementProxy connection_prepareStatement(FilterChain chain, ConnectionProxy connection, String sql)
throws SQLException {
return super.connection_prepareStatement(chain, connection, encode(connection, sql));
}
@Override
public PreparedStatementProxy connection_prepareStatement(FilterChain chain, ConnectionProxy connection,
String sql, int autoGeneratedKeys) throws SQLException {
return super.connection_prepareStatement(chain, connection, encode(connection, sql), autoGeneratedKeys);
}
@Override
public PreparedStatementProxy connection_prepareStatement(FilterChain chain, ConnectionProxy connection,
String sql, int resultSetType, int resultSetConcurrency)
throws SQLException {
return super.connection_prepareStatement(chain, connection, encode(connection, sql), resultSetType,
resultSetConcurrency);
}
@Override
public PreparedStatementProxy connection_prepareStatement(FilterChain chain, ConnectionProxy connection,
String sql, int resultSetType, int resultSetConcurrency,
int resultSetHoldability) throws SQLException {
return super.connection_prepareStatement(chain, connection, encode(connection, sql), resultSetType,
resultSetConcurrency, resultSetHoldability);
}
@Override
public PreparedStatementProxy connection_prepareStatement(FilterChain chain, ConnectionProxy connection,
String sql, int[] columnIndexes) throws SQLException {
return super.connection_prepareStatement(chain, connection, encode(connection, sql), columnIndexes);
}
@Override
public PreparedStatementProxy connection_prepareStatement(FilterChain chain, ConnectionProxy connection,
String sql, String[] columnNames) throws SQLException {
return super.connection_prepareStatement(chain, connection, encode(connection, sql), columnNames);
}
// / precall
@Override
public CallableStatementProxy connection_prepareCall(FilterChain chain, ConnectionProxy connection, String sql)
throws SQLException {
return super.connection_prepareCall(chain, connection, encode(connection, sql));
}
@Override
public CallableStatementProxy connection_prepareCall(FilterChain chain, ConnectionProxy connection, String sql,
int resultSetType, int resultSetConcurrency)
throws SQLException {
return super.connection_prepareCall(chain, connection, encode(connection, sql), resultSetType,
resultSetConcurrency);
}
@Override
public CallableStatementProxy connection_prepareCall(FilterChain chain, ConnectionProxy connection, String sql,
int resultSetType, int resultSetConcurrency,
int resultSetHoldability) throws SQLException {
return super.connection_prepareCall(chain, connection, encode(connection, sql), resultSetType,
resultSetConcurrency, resultSetHoldability);
}
// nativeSQL
@Override
public String connection_nativeSQL(FilterChain chain, ConnectionProxy connection, String sql) throws SQLException {
String encodedSql = encode(connection, sql);
return super.connection_nativeSQL(chain, connection, encodedSql);
}
// ////////////// statement
@Override
public void statement_addBatch(FilterChain chain, StatementProxy statement, String sql) throws SQLException {
super.statement_addBatch(chain, statement, encode(statement.getConnectionProxy(), sql));
}
@Override
public boolean statement_execute(FilterChain chain, StatementProxy statement, String sql) throws SQLException {
return super.statement_execute(chain, statement, encode(statement.getConnectionProxy(), sql));
}
@Override
public boolean statement_execute(FilterChain chain, StatementProxy statement, String sql, int autoGeneratedKeys)
throws SQLException {
return super.statement_execute(chain, statement, encode(statement.getConnectionProxy(), sql), autoGeneratedKeys);
}
@Override
public boolean statement_execute(FilterChain chain, StatementProxy statement, String sql, int columnIndexes[])
throws SQLException {
return super.statement_execute(chain, statement, encode(statement.getConnectionProxy(), sql), columnIndexes);
}
@Override
public boolean statement_execute(FilterChain chain, StatementProxy statement, String sql, String columnNames[])
throws SQLException {
return super.statement_execute(chain, statement, encode(statement.getConnectionProxy(), sql), columnNames);
}
@Override
public ResultSetProxy statement_executeQuery(FilterChain chain, StatementProxy statement, String sql)
throws SQLException {
return super.statement_executeQuery(chain, statement, encode(statement.getConnectionProxy(), sql));
}
@Override
public int statement_executeUpdate(FilterChain chain, StatementProxy statement, String sql) throws SQLException {
return super.statement_executeUpdate(chain, statement, encode(statement.getConnectionProxy(), sql));
}
@Override
public int statement_executeUpdate(FilterChain chain, StatementProxy statement, String sql, int autoGeneratedKeys)
throws SQLException {
return super.statement_executeUpdate(chain, statement, encode(statement.getConnectionProxy(), sql),
autoGeneratedKeys);
}
@Override
public int statement_executeUpdate(FilterChain chain, StatementProxy statement, String sql, int columnIndexes[])
throws SQLException {
return super.statement_executeUpdate(chain, statement, encode(statement.getConnectionProxy(), sql),
columnIndexes);
}
@Override
public int statement_executeUpdate(FilterChain chain, StatementProxy statement, String sql, String columnNames[])
throws SQLException {
return super.statement_executeUpdate(chain, statement, encode(statement.getConnectionProxy(), sql), columnNames);
}
// ========== preparedStatement
@Override
public void preparedStatement_setString(FilterChain chain, PreparedStatementProxy statement, int parameterIndex,
String x) throws SQLException {
super.preparedStatement_setString(chain, statement, parameterIndex, encode(statement.getConnectionProxy(), x));
}
@Override
public void preparedStatement_setCharacterStream(FilterChain chain, PreparedStatementProxy statement,
int parameterIndex, java.io.Reader reader) throws SQLException {
String text = Utils.read(reader);
String encodedText = encode(statement.getConnectionProxy(), text);
super.preparedStatement_setCharacterStream(chain, statement, parameterIndex, new StringReader(encodedText));
}
@Override
public void preparedStatement_setCharacterStream(FilterChain chain, PreparedStatementProxy statement,
int parameterIndex, java.io.Reader reader, int length)
throws SQLException {
String text = Utils.read(reader, length);
String encodedText = encode(statement.getConnectionProxy(), text);
super.preparedStatement_setCharacterStream(chain, statement, parameterIndex, new StringReader(encodedText),
encodedText.length());
}
@Override
public void preparedStatement_setCharacterStream(FilterChain chain, PreparedStatementProxy statement,
int parameterIndex, java.io.Reader reader, long length)
throws SQLException {
String text = Utils.read(reader, (int) length);
String encodedText = encode(statement.getConnectionProxy(), text);
super.preparedStatement_setCharacterStream(chain, statement, parameterIndex, new StringReader(encodedText),
encodedText.length());
}
@Override
public void preparedStatement_setObject(FilterChain chain, PreparedStatementProxy statement, int parameterIndex,
Object x) throws SQLException {
if (x instanceof String) {
String encodedText = encode(statement.getConnectionProxy(), (String) x);
super.preparedStatement_setObject(chain, statement, parameterIndex, encodedText);
} else if (x instanceof Reader) {
String text = Utils.read((Reader) x);
String encodedText = encode(statement.getConnectionProxy(), text);
super.preparedStatement_setObject(chain, statement, parameterIndex, new StringReader(encodedText));
} else {
super.preparedStatement_setObject(chain, statement, parameterIndex, x);
}
}
@Override
public void preparedStatement_setObject(FilterChain chain, PreparedStatementProxy statement, int parameterIndex,
Object x, int targetSqlType) throws SQLException {
if (x instanceof String) {
String encodedText = encode(statement.getConnectionProxy(), (String) x);
super.preparedStatement_setObject(chain, statement, parameterIndex, encodedText, targetSqlType);
} else if (x instanceof Reader) {
String text = Utils.read((Reader) x);
String encodedText = encode(statement.getConnectionProxy(), text);
super.preparedStatement_setObject(chain, statement, parameterIndex, new StringReader(encodedText),
targetSqlType);
} else {
super.preparedStatement_setObject(chain, statement, parameterIndex, x, targetSqlType);
}
}
@Override
public void preparedStatement_setObject(FilterChain chain, PreparedStatementProxy statement, int parameterIndex,
Object x, int targetSqlType, int scaleOrLength) throws SQLException {
if (x instanceof String) {
String encodedText = encode(statement.getConnectionProxy(), (String) x);
super.preparedStatement_setObject(chain, statement, parameterIndex, encodedText, targetSqlType,
scaleOrLength);
} else if (x instanceof Reader) {
String text = Utils.read((Reader) x);
String encodedText = encode(statement.getConnectionProxy(), text);
super.preparedStatement_setObject(chain, statement, parameterIndex, new StringReader(encodedText),
targetSqlType, scaleOrLength);
} else {
super.preparedStatement_setObject(chain, statement, parameterIndex, x, targetSqlType, scaleOrLength);
}
}
// //////////
@Override
public long clob_position(FilterChain chain, ClobProxy wrapper, String searchstr, long start) throws SQLException {
return chain.clob_position(wrapper, encode(wrapper.getConnectionWrapper(), searchstr), start);
}
@Override
public String clob_getSubString(FilterChain chain, ClobProxy wrapper, long pos, int length) throws SQLException {
String text = super.clob_getSubString(chain, wrapper, pos, length);
return decode(wrapper.getConnectionWrapper(), text);
}
@Override
public java.io.Reader clob_getCharacterStream(FilterChain chain, ClobProxy wrapper) throws SQLException {
Reader reader = super.clob_getCharacterStream(chain, wrapper);
String text = Utils.read(reader);
return new StringReader(decode(wrapper.getConnectionWrapper(), text));
}
@Override
public Reader clob_getCharacterStream(FilterChain chain, ClobProxy wrapper, long pos, long length)
throws SQLException {
Reader reader = super.clob_getCharacterStream(chain, wrapper, pos, length);
String text = Utils.read(reader);
return new StringReader(decode(wrapper.getConnectionWrapper(), text));
}
@Override
public int clob_setString(FilterChain chain, ClobProxy wrapper, long pos, String str) throws SQLException {
return chain.clob_setString(wrapper, pos, encode(wrapper.getConnectionWrapper(), str));
}
@Override
public int clob_setString(FilterChain chain, ClobProxy wrapper, long pos, String str, int offset, int len)
throws SQLException {
return chain.clob_setString(wrapper, pos, encode(wrapper.getConnectionWrapper(), str), offset, len);
}
// ///////////// callableStatement_
@Override
public void callableStatement_setCharacterStream(FilterChain chain, CallableStatementProxy statement,
String parameterName, java.io.Reader reader) throws SQLException {
String text = Utils.read(reader);
Reader encodeReader = new StringReader(encode(statement.getConnectionProxy(), text));
super.callableStatement_setCharacterStream(chain, statement, parameterName, encodeReader);
}
@Override
public void callableStatement_setCharacterStream(FilterChain chain, CallableStatementProxy statement,
String parameterName, java.io.Reader reader, int length)
throws SQLException {
String text = Utils.read(reader, length);
String encodeText = encode(statement.getConnectionProxy(), text);
Reader encodeReader = new StringReader(encodeText);
super.callableStatement_setCharacterStream(chain, statement, parameterName, encodeReader, encodeText.length());
}
@Override
public void callableStatement_setCharacterStream(FilterChain chain, CallableStatementProxy statement,
String parameterName, java.io.Reader reader, long length)
throws SQLException {
String text = Utils.read(reader, (int) length);
String encodeText = encode(statement.getConnectionProxy(), text);
Reader encodeReader = new StringReader(encodeText);
super.callableStatement_setCharacterStream(chain, statement, parameterName, encodeReader,
(long) encodeText.length());
}
@Override
public void callableStatement_setString(FilterChain chain, CallableStatementProxy statement, String parameterName,
String x) throws SQLException {
super.callableStatement_setString(chain, statement, parameterName, encode(statement.getConnectionProxy(), x));
}
@Override
public void callableStatement_setObject(FilterChain chain, CallableStatementProxy statement, String parameterName,
Object x) throws SQLException {
if (x instanceof String) {
String encodedText = encode(statement.getConnectionProxy(), (String) x);
super.callableStatement_setObject(chain, statement, parameterName, encodedText);
} else if (x instanceof Reader) {
String text = Utils.read((Reader) x);
String encodedText = encode(statement.getConnectionProxy(), text);
super.callableStatement_setObject(chain, statement, parameterName, new StringReader(encodedText));
} else {
super.callableStatement_setObject(chain, statement, parameterName, x);
}
}
@Override
public void callableStatement_setObject(FilterChain chain, CallableStatementProxy statement, String parameterName,
Object x, int targetSqlType) throws SQLException {
if (x instanceof String) {
String encodedText = encode(statement.getConnectionProxy(), (String) x);
super.callableStatement_setObject(chain, statement, parameterName, encodedText, targetSqlType);
} else if (x instanceof Reader) {
String text = Utils.read((Reader) x);
String encodedText = encode(statement.getConnectionProxy(), text);
super.callableStatement_setObject(chain, statement, parameterName, new StringReader(encodedText),
targetSqlType);
} else {
super.callableStatement_setObject(chain, statement, parameterName, x, targetSqlType);
}
}
@Override
public void callableStatement_setObject(FilterChain chain, CallableStatementProxy statement, String parameterName,
Object x, int targetSqlType, int scale) throws SQLException {
if (x instanceof String) {
String encodedText = encode(statement.getConnectionProxy(), (String) x);
super.callableStatement_setObject(chain, statement, parameterName, encodedText, targetSqlType, scale);
} else if (x instanceof Reader) {
String text = Utils.read((Reader) x);
String encodedText = encode(statement.getConnectionProxy(), text);
super.callableStatement_setObject(chain, statement, parameterName, new StringReader(encodedText),
targetSqlType, scale);
} else {
super.callableStatement_setObject(chain, statement, parameterName, x, targetSqlType, scale);
}
}
@Override
public String callableStatement_getString(FilterChain chain, CallableStatementProxy statement, int parameterIndex)
throws SQLException {
String value = super.callableStatement_getString(chain, statement, parameterIndex);
return decode(statement.getConnectionProxy(), value);
}
@Override
public String callableStatement_getString(FilterChain chain, CallableStatementProxy statement, String parameterName)
throws SQLException {
String value = super.callableStatement_getString(chain, statement, parameterName);
return decode(statement.getConnectionProxy(), value);
}
@Override
public Object callableStatement_getObject(FilterChain chain, CallableStatementProxy statement, int parameterIndex)
throws SQLException {
Object value = chain.callableStatement_getObject(statement, parameterIndex);
return decodeObject(statement, value);
}
@Override
public Object callableStatement_getObject(FilterChain chain, CallableStatementProxy statement, int parameterIndex,
java.util.Map<String, Class<?>> map) throws SQLException {
Object value = chain.callableStatement_getObject(statement, parameterIndex, map);
return decodeObject(statement, value);
}
@Override
public Object callableStatement_getObject(FilterChain chain, CallableStatementProxy statement, String parameterName)
throws SQLException {
Object value = chain.callableStatement_getObject(statement, parameterName);
return decodeObject(statement, value);
}
@Override
public Object callableStatement_getObject(FilterChain chain, CallableStatementProxy statement,
String parameterName, java.util.Map<String, Class<?>> map)
throws SQLException {
Object value = chain.callableStatement_getObject(statement, parameterName, map);
return decodeObject(statement, value);
}
}