/* Copyright 2000-2005 The Apache Software Foundation or its licensors, as
* applicable.
*
* 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.
*/
#include <stdio.h>
#include "apu.h"
#include "apr_pools.h"
#include "apr_dbd_internal.h"
#include "apr_dbd.h"
#include "apr_hash.h"
#include "apr_thread_mutex.h"
#include "apr_dso.h"
#include "apr_strings.h"
static apr_hash_t *drivers = NULL;
#define CLEANUP_CAST (apr_status_t (*)(void*))
/* Once the autofoo supports building it for dynamic load, we can use
* #define APR_DSO_BUILD APR_HAS_DSO
*/
#if APR_DSO_BUILD
#if APR_HAS_THREADS
static apr_thread_mutex_t* mutex = NULL;
#endif
#else
#define DRIVER_LOAD(name,driver,pool) \
{ \
extern const apr_dbd_driver_t driver; \
apr_hash_set(drivers,name,APR_HASH_KEY_STRING,&driver); \
if (driver.init) { \
driver.init(pool); \
} \
}
#endif
static apr_status_t apr_dbd_term(void *ptr)
{
/* set drivers to NULL so init can work again */
drivers = NULL;
/* Everything else we need is handled by cleanups registered
* when we created mutexes and loaded DSOs
*/
return APR_SUCCESS;
}
APU_DECLARE(apr_status_t) apr_dbd_init(apr_pool_t *pool)
{
apr_status_t ret = APR_SUCCESS;
if (drivers != NULL) {
return APR_SUCCESS;
}
drivers = apr_hash_make(pool);
apr_pool_cleanup_register(pool, NULL, apr_dbd_term,
apr_pool_cleanup_null);
#if APR_DSO_BUILD
#if APR_HAS_THREADS
ret = apr_thread_mutex_create(&mutex, APR_THREAD_MUTEX_DEFAULT, pool);
/* This already registers a pool cleanup */
#endif
#else
#if APU_HAVE_MYSQL
DRIVER_LOAD("mysql", apr_dbd_mysql_driver, pool);
#endif
#if APU_HAVE_PGSQL
DRIVER_LOAD("pgsql", apr_dbd_pgsql_driver, pool);
#endif
#if APU_HAVE_SQLITE3
DRIVER_LOAD("sqlite3", apr_dbd_sqlite3_driver, pool);
#endif
#if APU_HAVE_SQLITE2
DRIVER_LOAD("sqlite2", apr_dbd_sqlite2_driver, pool);
#endif
#if APU_HAVE_SOME_OTHER_BACKEND
DRIVER_LOAD("firebird", apr_dbd_other_driver, pool);
#endif
#endif
return ret;
}
APU_DECLARE(apr_status_t) apr_dbd_get_driver(apr_pool_t *pool, const char *name,
const apr_dbd_driver_t **driver)
{
#if APR_DSO_BUILD
char path[80];
apr_dso_handle_t *dlhandle = NULL;
#endif
apr_status_t rv;
*driver = apr_hash_get(drivers, name, APR_HASH_KEY_STRING);
if (*driver) {
return APR_SUCCESS;
}
#if APR_DSO_BUILD
#if APR_HAS_THREADS
rv = apr_thread_mutex_lock(mutex);
if (rv != APR_SUCCESS) {
goto unlock;
}
*driver = apr_hash_get(drivers, name, APR_HASH_KEY_STRING);
if (*driver) {
goto unlock;
}
#endif
#ifdef WIN32
sprintf(path, "apr_dbd_%s.dll", name);
#else
sprintf(path, "apr_dbd_%s.so", name);
#endif
rv = apr_dso_load(&dlhandle, path, pool);
if (rv != APR_SUCCESS) { /* APR_EDSOOPEN */
goto unlock;
}
sprintf(path, "apr_dbd_%s_driver", name);
rv = apr_dso_sym((void*)driver, dlhandle, path);
if (rv != APR_SUCCESS) { /* APR_ESYMNOTFOUND */
apr_dso_unload(dlhandle);
goto unlock;
}
if ((*driver)->init) {
(*driver)->init(pool);
}
apr_hash_set(drivers, name, APR_HASH_KEY_STRING, *driver);
unlock:
#if APR_HAS_THREADS
apr_thread_mutex_unlock(mutex);
#endif
#else /* APR_DSO_BUILD - so if it wasn't already loaded, it's NOTIMPL */
rv = APR_ENOTIMPL;
#endif
return rv;
}
APU_DECLARE(apr_status_t) apr_dbd_open(const apr_dbd_driver_t *driver,
apr_pool_t *pool, const char *params,
apr_dbd_t **handle)
{
apr_status_t rv;
*handle = driver->open(pool, params);
if (*handle == NULL) {
return APR_EGENERAL;
}
rv = apr_dbd_check_conn(driver, pool, *handle);
if ((rv != APR_SUCCESS) && (rv != APR_ENOTIMPL)) {
apr_dbd_close(driver, *handle);
return APR_EGENERAL;
}
return APR_SUCCESS;
}
APU_DECLARE(int) apr_dbd_transaction_start(const apr_dbd_driver_t *driver,
apr_pool_t *pool, apr_dbd_t *handle,
apr_dbd_transaction_t **trans)
{
int ret = driver->start_transaction(pool, handle, trans);
if (*trans) {
apr_pool_cleanup_register(pool, *trans,
CLEANUP_CAST driver->end_transaction,
apr_pool_cleanup_null);
}
return ret;
}
APU_DECLARE(int) apr_dbd_transaction_end(const apr_dbd_driver_t *driver,
apr_pool_t *pool,
apr_dbd_transaction_t *trans)
{
apr_pool_cleanup_kill(pool, trans, CLEANUP_CAST driver->end_transaction);
return driver->end_transaction(trans);
}
APU_DECLARE(apr_status_t) apr_dbd_close(const apr_dbd_driver_t *driver,
apr_dbd_t *handle)
{
return driver->close(handle);
}
APU_DECLARE(const char*) apr_dbd_name(const apr_dbd_driver_t *driver)
{
return driver->name;
}
APU_DECLARE(void*) apr_dbd_native_handle(const apr_dbd_driver_t *driver,
apr_dbd_t *handle)
{
return driver->native_handle(handle);
}
APU_DECLARE(int) apr_dbd_check_conn(const apr_dbd_driver_t *driver, apr_pool_t *pool,
apr_dbd_t *handle)
{
return driver->check_conn(pool, handle);
}
APU_DECLARE(int) apr_dbd_set_dbname(const apr_dbd_driver_t *driver, apr_pool_t *pool,
apr_dbd_t *handle, const char *name)
{
return driver->set_dbname(pool,handle,name);
}
APU_DECLARE(int) apr_dbd_query(const apr_dbd_driver_t *driver, apr_dbd_t *handle,
int *nrows, const char *statement)
{
return driver->query(handle,nrows,statement);
}
APU_DECLARE(int) apr_dbd_select(const apr_dbd_driver_t *driver, apr_pool_t *pool,
apr_dbd_t *handle, apr_dbd_results_t **res,
const char *statement, int random)
{
return driver->select(pool,handle,res,statement,random);
}
APU_DECLARE(int) apr_dbd_num_cols(const apr_dbd_driver_t *driver,
apr_dbd_results_t *res)
{
return driver->num_cols(res);
}
APU_DECLARE(int) apr_dbd_num_tuples(const apr_dbd_driver_t *driver,
apr_dbd_results_t *res)
{
return driver->num_tuples(res);
}
APU_DECLARE(int) apr_dbd_get_row(const apr_dbd_driver_t *driver, apr_pool_t *pool,
apr_dbd_results_t *res, apr_dbd_row_t **row,
int rownum)
{
return driver->get_row(pool,res,row,rownum);
}
APU_DECLARE(const char*) apr_dbd_get_entry(const apr_dbd_driver_t *driver,
apr_dbd_row_t *row, int col)
{
return driver->get_entry(row,col);
}
APU_DECLARE(const char*) apr_dbd_error(const apr_dbd_driver_t *driver,
apr_dbd_t *handle, int errnum)
{
return driver->error(handle,errnum);
}
APU_DECLARE(const char*) apr_dbd_escape(const apr_dbd_driver_t *driver,
apr_pool_t *pool, const char *string,
apr_dbd_t *handle)
{
return driver->escape(pool,string,handle);
}
APU_DECLARE(int) apr_dbd_prepare(const apr_dbd_driver_t *driver, apr_pool_t *pool,
apr_dbd_t *handle, const char *query,
const char *label,
apr_dbd_prepared_t **statement)
{
return driver->prepare(pool,handle,query,label,statement);
}
APU_DECLARE(int) apr_dbd_pquery(const apr_dbd_driver_t *driver, apr_pool_t *pool,
apr_dbd_t *handle, int *nrows,
apr_dbd_prepared_t *statement, int nargs,
const char **args)
{
return driver->pquery(pool,handle,nrows,statement,nargs,args);
}
APU_DECLARE(int) apr_dbd_pselect(const apr_dbd_driver_t *driver, apr_pool_t *pool,
apr_dbd_t *handle, apr_dbd_results_t **res,
apr_dbd_prepared_t *statement, int random,
int nargs, const char **args)
{
return driver->pselect(pool,handle,res,statement,random,nargs,args);
}
APU_DECLARE(int) apr_dbd_pvquery(const apr_dbd_driver_t *driver, apr_pool_t *pool,
apr_dbd_t *handle, int *nrows,
apr_dbd_prepared_t *statement,...)
{
int ret;
va_list args;
va_start(args, statement);
ret = driver->pvquery(pool,handle,nrows,statement,args);
va_end(args);
return ret;
}
APU_DECLARE(int) apr_dbd_pvselect(const apr_dbd_driver_t *driver, apr_pool_t *pool,
apr_dbd_t *handle, apr_dbd_results_t **res,
apr_dbd_prepared_t *statement, int random,...)
{
int ret;
va_list args;
va_start(args, random);
ret = driver->pvselect(pool,handle,res,statement,random,args);
va_end(args);
return ret;
}