1 /* Licensed to the Apache Software Foundation (ASF) under one or more
2 * contributor license agreements. See the NOTICE file distributed with
3 * this work for additional information regarding copyright ownership.
4 * The ASF licenses this file to You under the Apache License, Version 2.0
5 * (the "License"); you may not use this file except in compliance with
6 * the License. You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
20 #include "apu_config.h"
23 #include "apr_pools.h"
25 #include "apr_strings.h"
27 #include "apr_thread_mutex.h"
29 #include "apr_atomic.h"
31 #include "apu_internal.h"
32 #include "apr_dbd_internal.h"
34 #include "apu_version.h"
36 static apr_hash_t *drivers = NULL;
37 static apr_uint32_t initialised = 0, in_init = 1;
39 #define CLEANUP_CAST (apr_status_t (*)(void*))
42 /* deprecated, but required for existing providers. Existing and new
43 * providers should be refactored to use a provider-specific mutex so
44 * that different providers do not block one another.
45 * In APR 1.3 this is no longer used for dso module loading, and
46 * apu_dso_mutex_[un]lock is used instead.
47 * In APR 2.0 this should become entirely local to libaprutil-2.so and
48 * no longer be exported.
50 static apr_thread_mutex_t* mutex = NULL;
51 APU_DECLARE(apr_status_t) apr_dbd_mutex_lock()
53 return apr_thread_mutex_lock(mutex);
55 APU_DECLARE(apr_status_t) apr_dbd_mutex_unlock()
57 return apr_thread_mutex_unlock(mutex);
60 APU_DECLARE(apr_status_t) apr_dbd_mutex_lock() {
63 APU_DECLARE(apr_status_t) apr_dbd_mutex_unlock() {
69 #define DRIVER_LOAD(name,driver,pool) \
71 extern const apr_dbd_driver_t driver; \
72 apr_hash_set(drivers,name,APR_HASH_KEY_STRING,&driver); \
79 static apr_status_t apr_dbd_term(void *ptr)
81 /* set drivers to NULL so init can work again */
84 /* Everything else we need is handled by cleanups registered
85 * when we created mutexes and loaded DSOs
90 APU_DECLARE(apr_status_t) apr_dbd_init(apr_pool_t *pool)
92 apr_status_t ret = APR_SUCCESS;
95 if (apr_atomic_inc32(&initialised)) {
96 apr_atomic_set32(&initialised, 1); /* prevent wrap-around */
98 while (apr_atomic_read32(&in_init)) /* wait until we get fully inited */
104 /* Top level pool scope, need process-scope lifetime */
105 for (parent = apr_pool_parent_get(pool);
106 parent && parent != pool;
107 parent = apr_pool_parent_get(pool))
110 /* deprecate in 2.0 - permit implicit initialization */
114 drivers = apr_hash_make(pool);
117 ret = apr_thread_mutex_create(&mutex, APR_THREAD_MUTEX_DEFAULT, pool);
118 /* This already registers a pool cleanup */
123 /* Load statically-linked drivers: */
125 DRIVER_LOAD("mysql", apr_dbd_mysql_driver, pool);
128 DRIVER_LOAD("pgsql", apr_dbd_pgsql_driver, pool);
131 DRIVER_LOAD("sqlite3", apr_dbd_sqlite3_driver, pool);
134 DRIVER_LOAD("sqlite2", apr_dbd_sqlite2_driver, pool);
137 DRIVER_LOAD("oracle", apr_dbd_oracle_driver, pool);
140 DRIVER_LOAD("odbc", apr_dbd_odbc_driver, pool);
142 #if APU_HAVE_SOME_OTHER_BACKEND
143 DRIVER_LOAD("firebird", apr_dbd_other_driver, pool);
145 #endif /* APU_DSO_BUILD */
147 apr_pool_cleanup_register(pool, NULL, apr_dbd_term,
148 apr_pool_cleanup_null);
150 apr_atomic_dec32(&in_init);
155 APU_DECLARE(apr_status_t) apr_dbd_get_driver(apr_pool_t *pool, const char *name,
156 const apr_dbd_driver_t **driver)
161 apr_dso_handle_sym_t symbol;
166 rv = apu_dso_mutex_lock();
171 *driver = apr_hash_get(drivers, name, APR_HASH_KEY_STRING);
174 apu_dso_mutex_unlock();
180 /* The driver DSO must have exactly the same lifetime as the
181 * drivers hash table; ignore the passed-in pool */
182 pool = apr_hash_pool_get(drivers);
185 apr_snprintf(modname, sizeof(modname), "dbd%s.nlm", name);
186 #elif defined(WIN32) || defined(__CYGWIN__)
187 apr_snprintf(modname, sizeof(modname),
188 "apr_dbd_%s-" APU_STRINGIFY(APU_MAJOR_VERSION) ".dll", name);
190 apr_snprintf(modname, sizeof(modname),
191 "apr_dbd_%s-" APU_STRINGIFY(APU_MAJOR_VERSION) ".so", name);
193 apr_snprintf(symname, sizeof(symname), "apr_dbd_%s_driver", name);
194 rv = apu_dso_load(NULL, &symbol, modname, symname, pool);
195 if (rv == APR_SUCCESS || rv == APR_EINIT) { /* previously loaded?!? */
197 name = apr_pstrdup(pool, name);
198 apr_hash_set(drivers, name, APR_HASH_KEY_STRING, *driver);
200 if ((*driver)->init) {
201 (*driver)->init(pool);
204 apu_dso_mutex_unlock();
206 #else /* not builtin and !APU_DSO_BUILD => not implemented */
213 APU_DECLARE(apr_status_t) apr_dbd_open_ex(const apr_dbd_driver_t *driver,
214 apr_pool_t *pool, const char *params,
219 *handle = (driver->open)(pool, params, error);
220 if (*handle == NULL) {
223 rv = apr_dbd_check_conn(driver, pool, *handle);
224 if ((rv != APR_SUCCESS) && (rv != APR_ENOTIMPL)) {
225 /* XXX: rv is APR error code, but apr_dbd_error() takes int! */
227 *error = apr_dbd_error(driver, *handle, rv);
229 apr_dbd_close(driver, *handle);
235 APU_DECLARE(apr_status_t) apr_dbd_open(const apr_dbd_driver_t *driver,
236 apr_pool_t *pool, const char *params,
239 return apr_dbd_open_ex(driver,pool,params,handle,NULL);
242 APU_DECLARE(int) apr_dbd_transaction_start(const apr_dbd_driver_t *driver,
243 apr_pool_t *pool, apr_dbd_t *handle,
244 apr_dbd_transaction_t **trans)
246 int ret = driver->start_transaction(pool, handle, trans);
248 apr_pool_cleanup_register(pool, *trans,
249 CLEANUP_CAST driver->end_transaction,
250 apr_pool_cleanup_null);
255 APU_DECLARE(int) apr_dbd_transaction_end(const apr_dbd_driver_t *driver,
257 apr_dbd_transaction_t *trans)
259 apr_pool_cleanup_kill(pool, trans, CLEANUP_CAST driver->end_transaction);
260 return driver->end_transaction(trans);
263 APU_DECLARE(int) apr_dbd_transaction_mode_get(const apr_dbd_driver_t *driver,
264 apr_dbd_transaction_t *trans)
266 return driver->transaction_mode_get(trans);
269 APU_DECLARE(int) apr_dbd_transaction_mode_set(const apr_dbd_driver_t *driver,
270 apr_dbd_transaction_t *trans,
273 return driver->transaction_mode_set(trans, mode);
276 APU_DECLARE(apr_status_t) apr_dbd_close(const apr_dbd_driver_t *driver,
279 return driver->close(handle);
282 APU_DECLARE(const char*) apr_dbd_name(const apr_dbd_driver_t *driver)
287 APU_DECLARE(void*) apr_dbd_native_handle(const apr_dbd_driver_t *driver,
290 return driver->native_handle(handle);
293 APU_DECLARE(int) apr_dbd_check_conn(const apr_dbd_driver_t *driver,
297 return driver->check_conn(pool, handle);
300 APU_DECLARE(int) apr_dbd_set_dbname(const apr_dbd_driver_t *driver,
302 apr_dbd_t *handle, const char *name)
304 return driver->set_dbname(pool,handle,name);
307 APU_DECLARE(int) apr_dbd_query(const apr_dbd_driver_t *driver,
309 int *nrows, const char *statement)
311 return driver->query(handle,nrows,statement);
314 APU_DECLARE(int) apr_dbd_select(const apr_dbd_driver_t *driver,
316 apr_dbd_t *handle, apr_dbd_results_t **res,
317 const char *statement, int random)
319 return driver->select(pool,handle,res,statement,random);
322 APU_DECLARE(int) apr_dbd_num_cols(const apr_dbd_driver_t *driver,
323 apr_dbd_results_t *res)
325 return driver->num_cols(res);
328 APU_DECLARE(int) apr_dbd_num_tuples(const apr_dbd_driver_t *driver,
329 apr_dbd_results_t *res)
331 return driver->num_tuples(res);
334 APU_DECLARE(int) apr_dbd_get_row(const apr_dbd_driver_t *driver,
336 apr_dbd_results_t *res, apr_dbd_row_t **row,
339 return driver->get_row(pool,res,row,rownum);
342 APU_DECLARE(const char*) apr_dbd_get_entry(const apr_dbd_driver_t *driver,
343 apr_dbd_row_t *row, int col)
345 return driver->get_entry(row,col);
348 APU_DECLARE(const char*) apr_dbd_get_name(const apr_dbd_driver_t *driver,
349 apr_dbd_results_t *res, int col)
351 return driver->get_name(res,col);
354 APU_DECLARE(const char*) apr_dbd_error(const apr_dbd_driver_t *driver,
355 apr_dbd_t *handle, int errnum)
357 return driver->error(handle,errnum);
360 APU_DECLARE(const char*) apr_dbd_escape(const apr_dbd_driver_t *driver,
361 apr_pool_t *pool, const char *string,
364 return driver->escape(pool,string,handle);
367 APU_DECLARE(int) apr_dbd_prepare(const apr_dbd_driver_t *driver,
369 apr_dbd_t *handle, const char *query,
371 apr_dbd_prepared_t **statement)
374 int i, nargs = 0, nvals = 0;
379 if (!driver->pformat) {
383 /* find the number of parameters in the query */
384 for (q = query; *q; q++) {
386 if (apr_isalpha(q[1])) {
388 } else if (q[1] == '%') {
395 qlen = strlen(query) +
396 nargs * (strlen(driver->pformat) + sizeof(nargs) * 3 + 2) + 1;
397 pq = apr_palloc(pool, qlen);
398 t = apr_pcalloc(pool, sizeof(*t) * nargs);
400 for (p = pq, q = query, i = 0; *q; q++) {
402 if (apr_isalpha(q[1])) {
404 case 'd': t[i] = APR_DBD_TYPE_INT; break;
405 case 'u': t[i] = APR_DBD_TYPE_UINT; break;
406 case 'f': t[i] = APR_DBD_TYPE_FLOAT; break;
411 case 'd': t[i] = APR_DBD_TYPE_TINY; q += 2; break;
412 case 'u': t[i] = APR_DBD_TYPE_UTINY; q += 2; break;
415 case 'd': t[i] = APR_DBD_TYPE_SHORT; q++; break;
416 case 'u': t[i] = APR_DBD_TYPE_USHORT; q++; break;
423 case 'd': t[i] = APR_DBD_TYPE_LONGLONG; q += 2; break;
424 case 'u': t[i] = APR_DBD_TYPE_ULONGLONG; q += 2; break;
427 case 'd': t[i] = APR_DBD_TYPE_LONG; q++; break;
428 case 'u': t[i] = APR_DBD_TYPE_ULONG; q++; break;
429 case 'f': t[i] = APR_DBD_TYPE_DOUBLE; q++; break;
435 case 't': t[i] = APR_DBD_TYPE_TEXT; q += 2; break;
436 case 'i': t[i] = APR_DBD_TYPE_TIME; q += 2; break;
437 case 'd': t[i] = APR_DBD_TYPE_DATE; q += 2; break;
438 case 'a': t[i] = APR_DBD_TYPE_DATETIME; q += 2; break;
439 case 's': t[i] = APR_DBD_TYPE_TIMESTAMP; q += 2; break;
440 case 'z': t[i] = APR_DBD_TYPE_ZTIMESTAMP; q += 2; break;
441 case 'b': t[i] = APR_DBD_TYPE_BLOB; q += 2; break;
442 case 'c': t[i] = APR_DBD_TYPE_CLOB; q += 2; break;
443 case 'n': t[i] = APR_DBD_TYPE_NULL; q += 2; break;
451 case APR_DBD_TYPE_NONE: /* by default, we expect strings */
452 t[i] = APR_DBD_TYPE_STRING;
454 case APR_DBD_TYPE_BLOB:
455 case APR_DBD_TYPE_CLOB: /* three (3) more values passed in */
462 /* insert database specific parameter reference */
463 p += apr_snprintf(p, qlen - (p - pq), driver->pformat, ++i);
464 } else if (q[1] == '%') { /* reduce %% to % */
475 return driver->prepare(pool,handle,pq,label,nargs,nvals,t,statement);
478 APU_DECLARE(int) apr_dbd_pquery(const apr_dbd_driver_t *driver,
480 apr_dbd_t *handle, int *nrows,
481 apr_dbd_prepared_t *statement,
482 int nargs, const char **args)
484 return driver->pquery(pool,handle,nrows,statement,args);
487 APU_DECLARE(int) apr_dbd_pselect(const apr_dbd_driver_t *driver,
489 apr_dbd_t *handle, apr_dbd_results_t **res,
490 apr_dbd_prepared_t *statement, int random,
491 int nargs, const char **args)
493 return driver->pselect(pool,handle,res,statement,random,args);
496 APU_DECLARE_NONSTD(int) apr_dbd_pvquery(const apr_dbd_driver_t *driver,
498 apr_dbd_t *handle, int *nrows,
499 apr_dbd_prepared_t *statement, ...)
503 va_start(args, statement);
504 ret = driver->pvquery(pool,handle,nrows,statement,args);
509 APU_DECLARE_NONSTD(int) apr_dbd_pvselect(const apr_dbd_driver_t *driver,
510 apr_pool_t *pool, apr_dbd_t *handle,
511 apr_dbd_results_t **res,
512 apr_dbd_prepared_t *statement,
517 va_start(args, random);
518 ret = driver->pvselect(pool,handle,res,statement,random,args);
523 APU_DECLARE(int) apr_dbd_pbquery(const apr_dbd_driver_t *driver,
525 apr_dbd_t *handle, int *nrows,
526 apr_dbd_prepared_t *statement,
529 return driver->pbquery(pool,handle,nrows,statement,args);
532 APU_DECLARE(int) apr_dbd_pbselect(const apr_dbd_driver_t *driver,
534 apr_dbd_t *handle, apr_dbd_results_t **res,
535 apr_dbd_prepared_t *statement, int random,
538 return driver->pbselect(pool,handle,res,statement,random,args);
541 APU_DECLARE_NONSTD(int) apr_dbd_pvbquery(const apr_dbd_driver_t *driver,
543 apr_dbd_t *handle, int *nrows,
544 apr_dbd_prepared_t *statement, ...)
548 va_start(args, statement);
549 ret = driver->pvbquery(pool,handle,nrows,statement,args);
554 APU_DECLARE_NONSTD(int) apr_dbd_pvbselect(const apr_dbd_driver_t *driver,
555 apr_pool_t *pool, apr_dbd_t *handle,
556 apr_dbd_results_t **res,
557 apr_dbd_prepared_t *statement,
562 va_start(args, random);
563 ret = driver->pvbselect(pool,handle,res,statement,random,args);
568 APU_DECLARE(apr_status_t) apr_dbd_datum_get(const apr_dbd_driver_t *driver,
569 apr_dbd_row_t *row, int col,
570 apr_dbd_type_e type, void *data)
572 return driver->datum_get(row,col,type,data);