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unixodbc
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unixodbc/DriverManager/SQLDisconnect.c

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/*********************************************************************
*
* This is based on code created by Peter Harvey,
* (pharvey@codebydesign.com).
*
* Modified and extended by Nick Gorham
* (nick@lurcher.org).
*
* Any bugs or problems should be considered the fault of Nick and not
* Peter.
*
* copyright (c) 1999 Nick Gorham
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
**********************************************************************
*
* $Id: SQLDisconnect.c,v 1.9 2009/02/18 17:59:08 lurcher Exp $
*
* $Log: SQLDisconnect.c,v $
* Revision 1.9 2009/02/18 17:59:08 lurcher
* Shift to using config.h, the compile lines were making it hard to spot warnings
*
* Revision 1.8 2004/02/18 15:47:44 lurcher
*
* Fix a leak in the iconv code
*
* Revision 1.7 2003/10/30 18:20:45 lurcher
*
* Fix broken thread protection
* Remove SQLNumResultCols after execute, lease S4/S% to driver
* Fix string overrun in SQLDriverConnect
* Add initial support for Interix
*
* Revision 1.6 2002/12/05 17:44:30 lurcher
*
* Display unknown return values in return logging
*
* Revision 1.5 2002/08/12 13:17:52 lurcher
*
* Replicate the way the MS DM handles loading of driver libs, and allocating
* handles in the driver. usage counting in the driver means that dlopen is
* only called for the first use, and dlclose for the last. AllocHandle for
* the driver environment is only called for the first time per driver
* per application environment.
*
* Revision 1.4 2002/07/24 08:49:51 lurcher
*
* Alter UNICODE support to use iconv for UNICODE-ANSI conversion
*
* Revision 1.3 2002/07/04 17:27:56 lurcher
*
* Small bug fixes
*
* Revision 1.1.1.1 2001/10/17 16:40:05 lurcher
*
* First upload to SourceForge
*
* Revision 1.8 2001/04/12 17:43:36 nick
*
* Change logging and added autotest to odbctest
*
* Revision 1.7 2001/03/21 16:12:29 nick
*
* Alter cleaning of stmt and desc handles if a SQLDisconnect fails
*
* Revision 1.6 2001/03/02 14:24:23 nick
*
* Fix thread detection for Solaris
*
* Revision 1.5 2001/02/12 11:20:22 nick
*
* Add supoort for calling SQLDriverLoad and SQLDriverUnload
*
* Revision 1.4 2000/12/18 12:53:29 nick
*
* More pooling tweeks
*
* Revision 1.3 2000/12/18 12:32:16 nick
*
* Fix missing return codes
*
* Revision 1.2 2000/12/14 18:10:19 nick
*
* Add connection pooling
*
* Revision 1.1.1.1 2000/09/04 16:42:52 nick
* Imported Sources
*
* Revision 1.13 2000/04/27 20:49:03 ngorham
*
* Fixes to work with Star Office 5.2
*
* Revision 1.12 2001/04/27 01:33:40 ngorham
*
* Fix a problem where handles were not being free'd
*
* Revision 1.11 2001/04/05 21:15:01 ngorham
*
* Fix small memory leak in SQLDisconnect and the Postgres driver
*
* Revision 1.10 2000/02/25 00:02:00 ngorham
*
* Add a patch to support IBM DB2, and Solaris threads
*
* Revision 1.9 2000/02/22 22:14:45 ngorham
*
* Added support for solaris threads
* Added check to overcome bug in PHP4
* Fixed bug in descriptors and ODBC 3 drivers
*
* Revision 1.8 1999/12/28 15:05:01 ngorham
*
* Fix bug that caused StarOffice to fail. A SQLConnect, SQLDisconnect,
* followed by another SQLConnect on the same DBC would fail.
*
* Revision 1.7 1999/11/13 23:40:59 ngorham
*
* Alter the way DM logging works
* Upgrade the Postgres driver to 6.4.6
*
* Revision 1.6 1999/10/24 23:54:17 ngorham
*
* First part of the changes to the error reporting
*
* Revision 1.5 1999/09/21 22:34:24 ngorham
*
* Improve performance by removing unneeded logging calls when logging is
* disabled
*
* Revision 1.4 1999/07/10 21:10:16 ngorham
*
* Adjust error sqlstate from driver manager, depending on requested
* version (ODBC2/3)
*
* Revision 1.3 1999/07/04 21:05:07 ngorham
*
* Add LGPL Headers to code
*
* Revision 1.2 1999/06/30 23:56:54 ngorham
*
* Add initial thread safety code
*
* Revision 1.1.1.1 1999/05/29 13:41:05 sShandyb
* first go at it
*
* Revision 1.1.1.1 1999/05/27 18:23:17 pharvey
* Imported sources
*
* Revision 1.2 1999/04/30 16:22:47 nick
* Another checkpoint
*
* Revision 1.1 1999/04/25 23:06:11 nick
* Initial revision
*
*
**********************************************************************/
#include <config.h>
#include "drivermanager.h"
static char const rcsid[]= "$RCSfile: SQLDisconnect.c,v $ $Revision: 1.9 $";
extern int pooling_enabled;
SQLRETURN SQLDisconnect( SQLHDBC connection_handle )
{
DMHDBC connection = (DMHDBC)connection_handle;
SQLRETURN ret;
SQLCHAR s1[ 100 + LOG_MESSAGE_LEN ];
/*
* check connection
*/
if ( !__validate_dbc( connection ))
{
dm_log_write( __FILE__,
__LINE__,
LOG_INFO,
LOG_INFO,
"Error: SQL_INVALID_HANDLE" );
return SQL_INVALID_HANDLE;
}
function_entry( connection );
if ( log_info.log_flag )
{
sprintf( connection -> msg, "\n\t\tEntry:\
\n\t\t\tConnection = %p",
connection );
dm_log_write( __FILE__,
__LINE__,
LOG_INFO,
LOG_INFO,
connection -> msg );
}
thread_protect( SQL_HANDLE_DBC, connection );
/*
* check states
*/
if ( connection -> state == STATE_C6 )
{
dm_log_write( __FILE__,
__LINE__,
LOG_INFO,
LOG_INFO,
"Error: 25000" );
__post_internal_error( &connection -> error,
ERROR_25000, NULL,
connection -> environment -> requested_version );
return function_return_nodrv( SQL_HANDLE_DBC, connection, SQL_ERROR );
}
else if ( connection -> state == STATE_C2 )
{
dm_log_write( __FILE__,
__LINE__,
LOG_INFO,
LOG_INFO,
"Error: 08003" );
__post_internal_error( &connection -> error,
ERROR_08003, NULL,
connection -> environment -> requested_version );
return function_return_nodrv( SQL_HANDLE_DBC, connection, SQL_ERROR );
}
/*
* any statements that are in SQL_NEED_DATA
*/
if( __check_stmt_from_dbc( connection, STATE_S8 )) {
dm_log_write( __FILE__,
__LINE__,
LOG_INFO,
LOG_INFO,
"Error: HY010" );
__post_internal_error( &connection -> error,
ERROR_HY010, NULL,
connection -> environment -> requested_version );
return function_return_nodrv( SQL_HANDLE_DBC, connection, SQL_ERROR );
}
if( __check_stmt_from_dbc( connection, STATE_S13 )) {
dm_log_write( __FILE__,
__LINE__,
LOG_INFO,
LOG_INFO,
"Error: HY010" );
__post_internal_error( &connection -> error,
ERROR_HY010, NULL,
connection -> environment -> requested_version );
return function_return_nodrv( SQL_HANDLE_DBC, connection, SQL_ERROR );
}
/*
* is it a pooled connection, or can it go back
*/
if ( connection -> pooled_connection )
{
__clean_stmt_from_dbc( connection );
__clean_desc_from_dbc( connection );
return_to_pool( connection );
if ( log_info.log_flag )
{
sprintf( connection -> msg,
"\n\t\tExit:[%s]",
__get_return_status( SQL_SUCCESS, s1 ));
dm_log_write( __FILE__,
__LINE__,
LOG_INFO,
LOG_INFO,
connection -> msg );
}
return function_return_nodrv( SQL_HANDLE_DBC, connection, SQL_SUCCESS );
}
else if ( pooling_enabled && connection -> pooling_timeout > 0 )
{
__clean_stmt_from_dbc( connection );
__clean_desc_from_dbc( connection );
return_to_pool( connection );
if ( log_info.log_flag )
{
sprintf( connection -> msg,
"\n\t\tExit:[%s]",
__get_return_status( SQL_SUCCESS, s1 ));
dm_log_write( __FILE__,
__LINE__,
LOG_INFO,
LOG_INFO,
connection -> msg );
}
return function_return_nodrv( SQL_HANDLE_DBC, connection, SQL_SUCCESS );
}
/*
* disconnect from the driver
*/
if ( !CHECK_SQLDISCONNECT( connection ))
{
dm_log_write( __FILE__,
__LINE__,
LOG_INFO,
LOG_INFO,
"Error: IM001" );
__post_internal_error( &connection -> error,
ERROR_IM001, NULL,
connection -> environment -> requested_version );
return function_return_nodrv( SQL_HANDLE_DBC, connection, SQL_ERROR );
}
ret = SQLDISCONNECT( connection,
connection -> driver_dbc );
if ( SQL_SUCCEEDED( ret ))
{
/*
* grab any errors
*/
if ( ret == SQL_SUCCESS_WITH_INFO )
{
function_return_ex( IGNORE_THREAD, connection, ret, TRUE );
}
/*
* complete disconnection from driver
*/
__disconnect_part_three( connection );
}
if ( log_info.log_flag )
{
sprintf( connection -> msg,
"\n\t\tExit:[%s]",
__get_return_status( ret, s1 ));
dm_log_write( __FILE__,
__LINE__,
LOG_INFO,
LOG_INFO,
connection -> msg );
}
return function_return( SQL_HANDLE_DBC, connection, ret );
}
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