1/*********************************************************************
2 *
3 * This is based on code created by Peter Harvey,
4 * (pharvey@codebydesign.com).
5 *
6 * Modified and extended by Nick Gorham
7 * (nick@lurcher.org).
8 *
9 * Any bugs or problems should be considered the fault of Nick and not
10 * Peter.
11 *
12 * copyright (c) 1999 Nick Gorham
13 *
14 * This library is free software; you can redistribute it and/or
15 * modify it under the terms of the GNU Lesser General Public
16 * License as published by the Free Software Foundation; either
17 * version 2 of the License, or (at your option) any later version.
18 *
19 * This library is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
22 * Lesser General Public License for more details.
23 *
24 * You should have received a copy of the GNU Lesser General Public
25 * License along with this library; if not, write to the Free Software
26 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
27 *
28 **********************************************************************
29 *
30 * $Id: SQLDisconnect.c,v 1.9 2009/02/18 17:59:08 lurcher Exp $
31 *
32 * $Log: SQLDisconnect.c,v $
33 * Revision 1.9 2009/02/18 17:59:08 lurcher
34 * Shift to using config.h, the compile lines were making it hard to spot warnings
35 *
36 * Revision 1.8 2004/02/18 15:47:44 lurcher
37 *
38 * Fix a leak in the iconv code
39 *
40 * Revision 1.7 2003/10/30 18:20:45 lurcher
41 *
42 * Fix broken thread protection
43 * Remove SQLNumResultCols after execute, lease S4/S% to driver
44 * Fix string overrun in SQLDriverConnect
45 * Add initial support for Interix
46 *
47 * Revision 1.6 2002/12/05 17:44:30 lurcher
48 *
49 * Display unknown return values in return logging
50 *
51 * Revision 1.5 2002/08/12 13:17:52 lurcher
52 *
53 * Replicate the way the MS DM handles loading of driver libs, and allocating
54 * handles in the driver. usage counting in the driver means that dlopen is
55 * only called for the first use, and dlclose for the last. AllocHandle for
56 * the driver environment is only called for the first time per driver
57 * per application environment.
58 *
59 * Revision 1.4 2002/07/24 08:49:51 lurcher
60 *
61 * Alter UNICODE support to use iconv for UNICODE-ANSI conversion
62 *
63 * Revision 1.3 2002/07/04 17:27:56 lurcher
64 *
65 * Small bug fixes
66 *
67 * Revision 1.1.1.1 2001/10/17 16:40:05 lurcher
68 *
69 * First upload to SourceForge
70 *
71 * Revision 1.8 2001/04/12 17:43:36 nick
72 *
73 * Change logging and added autotest to odbctest
74 *
75 * Revision 1.7 2001/03/21 16:12:29 nick
76 *
77 * Alter cleaning of stmt and desc handles if a SQLDisconnect fails
78 *
79 * Revision 1.6 2001/03/02 14:24:23 nick
80 *
81 * Fix thread detection for Solaris
82 *
83 * Revision 1.5 2001/02/12 11:20:22 nick
84 *
85 * Add supoort for calling SQLDriverLoad and SQLDriverUnload
86 *
87 * Revision 1.4 2000/12/18 12:53:29 nick
88 *
89 * More pooling tweeks
90 *
91 * Revision 1.3 2000/12/18 12:32:16 nick
92 *
93 * Fix missing return codes
94 *
95 * Revision 1.2 2000/12/14 18:10:19 nick
96 *
97 * Add connection pooling
98 *
99 * Revision 1.1.1.1 2000/09/04 16:42:52 nick
100 * Imported Sources
101 *
102 * Revision 1.13 2000/04/27 20:49:03 ngorham
103 *
104 * Fixes to work with Star Office 5.2
105 *
106 * Revision 1.12 2001/04/27 01:33:40 ngorham
107 *
108 * Fix a problem where handles were not being free'd
109 *
110 * Revision 1.11 2001/04/05 21:15:01 ngorham
111 *
112 * Fix small memory leak in SQLDisconnect and the Postgres driver
113 *
114 * Revision 1.10 2000/02/25 00:02:00 ngorham
115 *
116 * Add a patch to support IBM DB2, and Solaris threads
117 *
118 * Revision 1.9 2000/02/22 22:14:45 ngorham
119 *
120 * Added support for solaris threads
121 * Added check to overcome bug in PHP4
122 * Fixed bug in descriptors and ODBC 3 drivers
123 *
124 * Revision 1.8 1999/12/28 15:05:01 ngorham
125 *
126 * Fix bug that caused StarOffice to fail. A SQLConnect, SQLDisconnect,
127 * followed by another SQLConnect on the same DBC would fail.
128 *
129 * Revision 1.7 1999/11/13 23:40:59 ngorham
130 *
131 * Alter the way DM logging works
132 * Upgrade the Postgres driver to 6.4.6
133 *
134 * Revision 1.6 1999/10/24 23:54:17 ngorham
135 *
136 * First part of the changes to the error reporting
137 *
138 * Revision 1.5 1999/09/21 22:34:24 ngorham
139 *
140 * Improve performance by removing unneeded logging calls when logging is
141 * disabled
142 *
143 * Revision 1.4 1999/07/10 21:10:16 ngorham
144 *
145 * Adjust error sqlstate from driver manager, depending on requested
146 * version (ODBC2/3)
147 *
148 * Revision 1.3 1999/07/04 21:05:07 ngorham
149 *
150 * Add LGPL Headers to code
151 *
152 * Revision 1.2 1999/06/30 23:56:54 ngorham
153 *
154 * Add initial thread safety code
155 *
156 * Revision 1.1.1.1 1999/05/29 13:41:05 sShandyb
157 * first go at it
158 *
159 * Revision 1.1.1.1 1999/05/27 18:23:17 pharvey
160 * Imported sources
161 *
162 * Revision 1.2 1999/04/30 16:22:47 nick
163 * Another checkpoint
164 *
165 * Revision 1.1 1999/04/25 23:06:11 nick
166 * Initial revision
167 *
168 *
169 **********************************************************************/
170
171#include <config.h>
172#include "drivermanager.h"
173
174static char const rcsid[]= "$RCSfile: SQLDisconnect.c,v $ $Revision: 1.9 $";
175
176extern int pooling_enabled;
177
178SQLRETURN SQLDisconnect( SQLHDBC connection_handle )
179{
180 DMHDBC connection = (DMHDBC)connection_handle;
181 SQLRETURN ret;
182 SQLCHAR s1[ 100 + LOG_MESSAGE_LEN ];
183
184 /*
185 * check connection
186 */
187
188 if ( !__validate_dbc( connection ))
189 {
190 dm_log_write( __FILE__,
191 __LINE__,
192 LOG_INFO,
193 LOG_INFO,
194 "Error: SQL_INVALID_HANDLE" );
195
196 return SQL_INVALID_HANDLE;
197 }
198
199 function_entry( connection );
200
201 if ( log_info.log_flag )
202 {
203 sprintf( connection -> msg, "\n\t\tEntry:\
204\n\t\t\tConnection = %p",
205 connection );
206
207 dm_log_write( __FILE__,
208 __LINE__,
209 LOG_INFO,
210 LOG_INFO,
211 connection -> msg );
212 }
213
214 thread_protect( SQL_HANDLE_DBC, connection );
215
216 /*
217 * check states
218 */
219
220 if ( connection -> state == STATE_C6 )
221 {
222 dm_log_write( __FILE__,
223 __LINE__,
224 LOG_INFO,
225 LOG_INFO,
226 "Error: 25000" );
227
228 __post_internal_error( &connection -> error,
229 ERROR_25000, NULL,
230 connection -> environment -> requested_version );
231
232 return function_return_nodrv( SQL_HANDLE_DBC, connection, SQL_ERROR );
233 }
234 else if ( connection -> state == STATE_C2 )
235 {
236 dm_log_write( __FILE__,
237 __LINE__,
238 LOG_INFO,
239 LOG_INFO,
240 "Error: 08003" );
241
242 __post_internal_error( &connection -> error,
243 ERROR_08003, NULL,
244 connection -> environment -> requested_version );
245
246 return function_return_nodrv( SQL_HANDLE_DBC, connection, SQL_ERROR );
247 }
248
249 /*
250 * any statements that are in SQL_NEED_DATA
251 */
252
253 if( __check_stmt_from_dbc( connection, STATE_S8 )) {
254
255 dm_log_write( __FILE__,
256 __LINE__,
257 LOG_INFO,
258 LOG_INFO,
259 "Error: HY010" );
260
261 __post_internal_error( &connection -> error,
262 ERROR_HY010, NULL,
263 connection -> environment -> requested_version );
264
265 return function_return_nodrv( SQL_HANDLE_DBC, connection, SQL_ERROR );
266 }
267
268 if( __check_stmt_from_dbc( connection, STATE_S13 )) {
269
270 dm_log_write( __FILE__,
271 __LINE__,
272 LOG_INFO,
273 LOG_INFO,
274 "Error: HY010" );
275
276 __post_internal_error( &connection -> error,
277 ERROR_HY010, NULL,
278 connection -> environment -> requested_version );
279
280 return function_return_nodrv( SQL_HANDLE_DBC, connection, SQL_ERROR );
281 }
282
283 /*
284 * is it a pooled connection, or can it go back
285 */
286
287 if ( connection -> pooled_connection )
288 {
289 __clean_stmt_from_dbc( connection );
290 __clean_desc_from_dbc( connection );
291
292 return_to_pool( connection );
293
294 if ( log_info.log_flag )
295 {
296 sprintf( connection -> msg,
297 "\n\t\tExit:[%s]",
298 __get_return_status( SQL_SUCCESS, s1 ));
299
300 dm_log_write( __FILE__,
301 __LINE__,
302 LOG_INFO,
303 LOG_INFO,
304 connection -> msg );
305 }
306
307 return function_return_nodrv( SQL_HANDLE_DBC, connection, SQL_SUCCESS );
308 }
309 else if ( pooling_enabled && connection -> pooling_timeout > 0 )
310 {
311 __clean_stmt_from_dbc( connection );
312 __clean_desc_from_dbc( connection );
313
314 return_to_pool( connection );
315
316 if ( log_info.log_flag )
317 {
318 sprintf( connection -> msg,
319 "\n\t\tExit:[%s]",
320 __get_return_status( SQL_SUCCESS, s1 ));
321
322 dm_log_write( __FILE__,
323 __LINE__,
324 LOG_INFO,
325 LOG_INFO,
326 connection -> msg );
327 }
328
329 return function_return_nodrv( SQL_HANDLE_DBC, connection, SQL_SUCCESS );
330 }
331
332 /*
333 * disconnect from the driver
334 */
335
336 if ( !CHECK_SQLDISCONNECT( connection ))
337 {
338 dm_log_write( __FILE__,
339 __LINE__,
340 LOG_INFO,
341 LOG_INFO,
342 "Error: IM001" );
343
344 __post_internal_error( &connection -> error,
345 ERROR_IM001, NULL,
346 connection -> environment -> requested_version );
347
348 return function_return_nodrv( SQL_HANDLE_DBC, connection, SQL_ERROR );
349 }
350
351 ret = SQLDISCONNECT( connection,
352 connection -> driver_dbc );
353
354 if ( SQL_SUCCEEDED( ret ))
355 {
356 /*
357 * grab any errors
358 */
359
360 if ( ret == SQL_SUCCESS_WITH_INFO )
361 {
362 function_return_ex( IGNORE_THREAD, connection, ret, TRUE );
363 }
364
365 /*
366 * complete disconnection from driver
367 */
368
369 __disconnect_part_three( connection );
370 }
371
372 if ( log_info.log_flag )
373 {
374 sprintf( connection -> msg,
375 "\n\t\tExit:[%s]",
376 __get_return_status( ret, s1 ));
377
378 dm_log_write( __FILE__,
379 __LINE__,
380 LOG_INFO,
381 LOG_INFO,
382 connection -> msg );
383 }
384
385 return function_return( SQL_HANDLE_DBC, connection, ret );
386}
387