content: /*
   * Copyright (c) 2002, 2021, Oracle and/or its affiliates.
   *
   * This program is free software; you can redistribute it and/or modify it under
   * the terms of the GNU General Public License, version 2.0, as published by the
   * Free Software Foundation.
   *
   * This program is also distributed with certain software (including but not
   * limited to OpenSSL) that is licensed under separate terms, as designated in a
   * particular file or component or in included license documentation. The
   * authors of MySQL hereby grant you an additional permission to link the
   * program and your derivative works with the separately licensed software that
   * they have included with MySQL.
   *
   * Without limiting anything contained in the foregoing, this file, which is
   * part of MySQL Connector/J, is also subject to the Universal FOSS Exception,
   * version 1.0, a copy of which can be found at
   * http://oss.oracle.com/licenses/universal-foss-exception.
   *
   * This program is distributed in the hope that it will be useful, but WITHOUT
   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
   * FOR A PARTICULAR PURPOSE. See the GNU General Public License, version 2.0,
   * for more details.
   *
   * You should have received a copy of the GNU General Public License along with
   * this program; if not, write to the Free Software Foundation, Inc.,
   * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA
   */
  
  package testsuite.simple;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  import java.sql.Connection;
  import java.time.LocalDateTime;
  import java.time.ZoneId;
  import java.time.ZonedDateTime;
  import java.util.Properties;
  import java.util.TimeZone;
  
  import org.junit.jupiter.api.Test;
  
  import com.mysql.cj.MysqlConnection;
  import com.mysql.cj.conf.PropertyKey;
  import com.mysql.cj.util.TimeUtil;
  
  import testsuite.BaseTestCase;
  
  /**
   * Tests escape processing
   */
  public class EscapeProcessingTest extends BaseTestCase {
      /**
       * Tests the escape processing functionality
       * 
       * @throws Exception
       */
      @Test
      public void testEscapeProcessing() throws Exception {
          TimeZone sessionTz = ((MysqlConnection) this.conn).getSession().getServerSession().getSessionTimeZone();
          ZonedDateTime zdt = LocalDateTime.parse("1997-05-24T10:30:29.123").atZone(ZoneId.systemDefault()).withZoneSameInstant(sessionTz.toZoneId());
          boolean withFract = versionMeetsMinimum(5, 6, 4);
  
          String results = "select dayname (abs(now())),   -- Today    \n" //
                  + "           '1997-05-24',  -- a date                    \n" + "           '10:30:29',  -- a time                     \n" + "           '"
                  + zdt.format(withFract ? TimeUtil.DATETIME_FORMATTER_WITH_MILLIS_NO_OFFSET : TimeUtil.DATETIME_FORMATTER_NO_FRACT_NO_OFFSET)
                  + "', -- a timestamp  \n" + "          '{string data with { or } will not be altered'   \n"
                  + "--  Also note that you can safely include { and } in comments";
  
          String exSql = "select {fn dayname ({fn abs({fn now()})})},   -- Today    \n" //
                  + "           {d '1997-05-24'},  -- a date                    \n" + "           {t '10:30:29' },  -- a time                     \n"
                  + "           {ts '1997-05-24 10:30:29.123'}, -- a timestamp  \n" + "          '{string data with { or } will not be altered'   \n"
                  + "--  Also note that you can safely include { and } in comments";
  
          String escapedSql = this.conn.nativeSQL(exSql);
  
          assertTrue(results.equals(escapedSql), escapedSql + "\n\nwas expected to match\n\n" + results);
      }
  
      /**
       * JDBC-4.0 spec will allow either SQL_ or not for type in {fn convert ...}
       * 
       * @throws Exception
       */
      @Test
      public void testConvertEscape() throws Exception {
          assertEquals(this.conn.nativeSQL("{fn convert(abcd, SQL_INTEGER)}"), this.conn.nativeSQL("{fn convert(abcd, INTEGER)}"));
      }
  
      /**
       * Tests that the escape tokenizer converts timestamp values
       * wrt. timezones
       * 
       * @throws Exception
       */
      @Test
      public void testTimestampConversion() throws Exception {
          TimeZone currentTimeZone = TimeZone.getDefault();
          String[] availableIds = TimeZone.getAvailableIDs(currentTimeZone.getRawOffset() - (3600 * 1000 * 7));
          String newTimeZone = null;
  
          if (availableIds.length > 0) {
              for (String id : availableIds) {
                  try {
                      ZoneId.of(id);
                      newTimeZone = id;
                  } catch (Exception e) {
                      // ignore, try different time zone ID
                  }
              }
          }
  
          if (newTimeZone == null) {
              newTimeZone = "UTC"; // punt
          }
  
          Properties props = new Properties();
          props.setProperty(PropertyKey.sslMode.getKeyName(), "DISABLED");
          props.setProperty(PropertyKey.allowPublicKeyRetrieval.getKeyName(), "true");
  
          props.setProperty(PropertyKey.connectionTimeZone.getKeyName(), newTimeZone);
          Connection tzConn = null;
  
          try {
              String escapeToken = "SELECT {ts '2002-11-12 10:00:00'} {t '05:11:02'}";
              tzConn = getConnectionWithProps(props);
              assertTrue(!tzConn.nativeSQL(escapeToken).equals(this.conn.nativeSQL(escapeToken)));
          } finally {
              if (tzConn != null) {
                  tzConn.close();
              }
          }
      }
  
      /**
       * Tests fix for BUG#51313 - Escape processing is confused by multiple backslashes.
       * 
       * @throws Exception
       */
      @Test
      public void testBug51313() throws Exception {
          this.stmt = this.conn.createStatement();
  
          this.rs = this.stmt.executeQuery("SELECT {fn lcase('My{fn UCASE(sql)}} -- DATABASE')}, {fn ucase({fn lcase('SERVER')})}"
                  + " -- {escape } processing test\n -- this {fn ucase('comment') is in line 2\r\n"
                  + " -- this in line 3, and previous escape sequence was malformed\n");
          assertTrue(this.rs.next());
          assertEquals("my{fn ucase(sql)}} -- database", this.rs.getString(1));
          assertEquals("SERVER", this.rs.getString(2));
          this.rs.close();
  
          this.rs = this.stmt.executeQuery("SELECT 'MySQL \\\\\\' testing {long \\\\\\' escape -- { \\\\\\' sequences \\\\\\' } } with escape processing '");
          assertTrue(this.rs.next());
          assertEquals("MySQL \\\' testing {long \\\' escape -- { \\\' sequences \\\' } } with escape processing ", this.rs.getString(1));
          this.rs.close();
  
          this.rs = this.stmt.executeQuery("SELECT 'MySQL \\'', '{ testing doubled -- } ''\\\\\\''' quotes '");
          assertTrue(this.rs.next());
          assertEquals("MySQL \'", this.rs.getString(1));
          assertEquals("{ testing doubled -- } '\\\'' quotes ", this.rs.getString(2));
          this.rs.close();
  
          this.rs = this.stmt.executeQuery("SELECT 'MySQL \\\\\\'''', '{ testing doubled -- } ''\\''' quotes '");
          assertTrue(this.rs.next());
          assertEquals("MySQL \\\''", this.rs.getString(1));
          assertEquals("{ testing doubled -- } '\'' quotes ", this.rs.getString(2));
          this.rs.close();
      }
  }
  