| /* Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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 <ctype.h> |
| #include <stdio.h> |
| |
| #include "apu_config.h" |
| #include "apu.h" |
| |
| #include "apr_pools.h" |
| #include "apr_dso.h" |
| #include "apr_strings.h" |
| #include "apr_hash.h" |
| #include "apr_thread_mutex.h" |
| #include "apr_lib.h" |
| |
| #include "apu_internal.h" |
| #include "apr_dbd_internal.h" |
| #include "apr_dbd.h" |
| #include "apu_version.h" |
| |
| static apr_hash_t *drivers = NULL; |
| |
| #define CLEANUP_CAST (apr_status_t (*)(void*)) |
| |
| #if APR_HAS_THREADS |
| /* deprecated, but required for existing providers. Existing and new |
| * providers should be refactored to use a provider-specific mutex so |
| * that different providers do not block one another. |
| * In APR 1.3 this is no longer used for dso module loading, and |
| * apu_dso_mutex_[un]lock is used instead. |
| * In APR 2.0 this should become entirely local to libaprutil-2.so and |
| * no longer be exported. |
| */ |
| static apr_thread_mutex_t* mutex = NULL; |
| APU_DECLARE(apr_status_t) apr_dbd_mutex_lock() |
| { |
| return apr_thread_mutex_lock(mutex); |
| } |
| APU_DECLARE(apr_status_t) apr_dbd_mutex_unlock() |
| { |
| return apr_thread_mutex_unlock(mutex); |
| } |
| #else |
| APU_DECLARE(apr_status_t) apr_dbd_mutex_lock() { |
| return APR_SUCCESS; |
| } |
| APU_DECLARE(apr_status_t) apr_dbd_mutex_unlock() { |
| return APR_SUCCESS; |
| } |
| #endif |
| |
| #if !APU_DSO_BUILD |
| #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; |
| apr_pool_t *parent; |
| |
| if (drivers != NULL) { |
| return APR_SUCCESS; |
| } |
| |
| /* Top level pool scope, need process-scope lifetime */ |
| for (parent = pool; parent; parent = apr_pool_parent_get(pool)) |
| pool = parent; |
| #if APU_DSO_BUILD |
| /* deprecate in 2.0 - permit implicit initialization */ |
| apu_dso_init(pool); |
| #endif |
| |
| drivers = apr_hash_make(pool); |
| |
| #if APR_HAS_THREADS |
| ret = apr_thread_mutex_create(&mutex, APR_THREAD_MUTEX_DEFAULT, pool); |
| /* This already registers a pool cleanup */ |
| #endif |
| |
| #if !APU_DSO_BUILD |
| |
| /* Load statically-linked drivers: */ |
| #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_ORACLE |
| DRIVER_LOAD("oracle", apr_dbd_oracle_driver, pool); |
| #endif |
| #if APU_HAVE_FREETDS |
| DRIVER_LOAD("freetds", apr_dbd_freetds_driver, pool); |
| #endif |
| #if APU_HAVE_ODBC |
| DRIVER_LOAD("odbc", apr_dbd_odbc_driver, pool); |
| #endif |
| #if APU_HAVE_SOME_OTHER_BACKEND |
| DRIVER_LOAD("firebird", apr_dbd_other_driver, pool); |
| #endif |
| #endif /* APU_DSO_BUILD */ |
| |
| apr_pool_cleanup_register(pool, NULL, apr_dbd_term, |
| apr_pool_cleanup_null); |
| |
| 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 APU_DSO_BUILD |
| char modname[32]; |
| char symname[34]; |
| apr_dso_handle_sym_t symbol; |
| #endif |
| apr_status_t rv; |
| |
| #if APU_DSO_BUILD |
| rv = apu_dso_mutex_lock(); |
| if (rv) { |
| return rv; |
| } |
| #endif |
| *driver = apr_hash_get(drivers, name, APR_HASH_KEY_STRING); |
| if (*driver) { |
| #if APU_DSO_BUILD |
| apu_dso_mutex_unlock(); |
| #endif |
| return APR_SUCCESS; |
| } |
| |
| #if APU_DSO_BUILD |
| /* The driver DSO must have exactly the same lifetime as the |
| * drivers hash table; ignore the passed-in pool */ |
| pool = apr_hash_pool_get(drivers); |
| |
| #if defined(NETWARE) |
| apr_snprintf(modname, sizeof(modname), "dbd%s.nlm", name); |
| #elif defined(WIN32) |
| apr_snprintf(modname, sizeof(modname), |
| "apr_dbd_%s-" APU_STRINGIFY(APU_MAJOR_VERSION) ".dll", name); |
| #else |
| apr_snprintf(modname, sizeof(modname), |
| "apr_dbd_%s-" APU_STRINGIFY(APU_MAJOR_VERSION) ".so", name); |
| #endif |
| apr_snprintf(symname, sizeof(symname), "apr_dbd_%s_driver", name); |
| rv = apu_dso_load(NULL, &symbol, modname, symname, pool); |
| if (rv == APR_SUCCESS || rv == APR_EINIT) { /* previously loaded?!? */ |
| *driver = symbol; |
| name = apr_pstrdup(pool, name); |
| apr_hash_set(drivers, name, APR_HASH_KEY_STRING, *driver); |
| rv = APR_SUCCESS; |
| if ((*driver)->init) { |
| (*driver)->init(pool); |
| } |
| } |
| apu_dso_mutex_unlock(); |
| |
| #else /* not builtin and !APR_HAS_DSO => not implemented */ |
| rv = APR_ENOTIMPL; |
| #endif |
| |
| return rv; |
| } |
| |
| APU_DECLARE(apr_status_t) apr_dbd_open_ex(const apr_dbd_driver_t *driver, |
| apr_pool_t *pool, const char *params, |
| apr_dbd_t **handle, |
| const char **error) |
| { |
| apr_status_t rv; |
| *handle = (driver->open)(pool, params, error); |
| if (*handle == NULL) { |
| return APR_EGENERAL; |
| } |
| rv = apr_dbd_check_conn(driver, pool, *handle); |
| if ((rv != APR_SUCCESS) && (rv != APR_ENOTIMPL)) { |
| /* XXX: rv is APR error code, but apr_dbd_error() takes int! */ |
| if (error) { |
| *error = apr_dbd_error(driver, *handle, rv); |
| } |
| apr_dbd_close(driver, *handle); |
| return APR_EGENERAL; |
| } |
| return APR_SUCCESS; |
| } |
| |
| 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) |
| { |
| return apr_dbd_open_ex(driver,pool,params,handle,NULL); |
| } |
| |
| 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(int) apr_dbd_transaction_mode_get(const apr_dbd_driver_t *driver, |
| apr_dbd_transaction_t *trans) |
| { |
| return driver->transaction_mode_get(trans); |
| } |
| |
| APU_DECLARE(int) apr_dbd_transaction_mode_set(const apr_dbd_driver_t *driver, |
| apr_dbd_transaction_t *trans, |
| int mode) |
| { |
| return driver->transaction_mode_set(trans, mode); |
| } |
| |
| 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_get_name(const apr_dbd_driver_t *driver, |
| apr_dbd_results_t *res, int col) |
| { |
| return driver->get_name(res,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) |
| { |
| size_t qlen; |
| int i, nargs = 0, nvals = 0; |
| char *p, *pq; |
| const char *q; |
| apr_dbd_type_e *t; |
| |
| if (!driver->pformat) { |
| return APR_ENOTIMPL; |
| } |
| |
| /* find the number of parameters in the query */ |
| for (q = query; *q; q++) { |
| if (q[0] == '%') { |
| if (apr_isalpha(q[1])) { |
| nargs++; |
| } else if (q[1] == '%') { |
| q++; |
| } |
| } |
| } |
| nvals = nargs; |
| |
| qlen = strlen(query) + |
| nargs * (strlen(driver->pformat) + sizeof(nargs) * 3 + 2) + 1; |
| pq = apr_palloc(pool, qlen); |
| t = apr_pcalloc(pool, sizeof(*t) * nargs); |
| |
| for (p = pq, q = query, i = 0; *q; q++) { |
| if (q[0] == '%') { |
| if (apr_isalpha(q[1])) { |
| switch (q[1]) { |
| case 'd': t[i] = APR_DBD_TYPE_INT; break; |
| case 'u': t[i] = APR_DBD_TYPE_UINT; break; |
| case 'f': t[i] = APR_DBD_TYPE_FLOAT; break; |
| case 'h': |
| switch (q[2]) { |
| case 'h': |
| switch (q[3]){ |
| case 'd': t[i] = APR_DBD_TYPE_TINY; q += 2; break; |
| case 'u': t[i] = APR_DBD_TYPE_UTINY; q += 2; break; |
| } |
| break; |
| case 'd': t[i] = APR_DBD_TYPE_SHORT; q++; break; |
| case 'u': t[i] = APR_DBD_TYPE_USHORT; q++; break; |
| } |
| break; |
| case 'l': |
| switch (q[2]) { |
| case 'l': |
| switch (q[3]){ |
| case 'd': t[i] = APR_DBD_TYPE_LONGLONG; q += 2; break; |
| case 'u': t[i] = APR_DBD_TYPE_ULONGLONG; q += 2; break; |
| } |
| break; |
| case 'd': t[i] = APR_DBD_TYPE_LONG; q++; break; |
| case 'u': t[i] = APR_DBD_TYPE_ULONG; q++; break; |
| case 'f': t[i] = APR_DBD_TYPE_DOUBLE; q++; break; |
| } |
| break; |
| case 'p': |
| if (q[2] == 'D') { |
| switch (q[3]) { |
| case 't': t[i] = APR_DBD_TYPE_TEXT; q += 2; break; |
| case 'i': t[i] = APR_DBD_TYPE_TIME; q += 2; break; |
| case 'd': t[i] = APR_DBD_TYPE_DATE; q += 2; break; |
| case 'a': t[i] = APR_DBD_TYPE_DATETIME; q += 2; break; |
| case 's': t[i] = APR_DBD_TYPE_TIMESTAMP; q += 2; break; |
| case 'z': t[i] = APR_DBD_TYPE_ZTIMESTAMP; q += 2; break; |
| case 'b': t[i] = APR_DBD_TYPE_BLOB; q += 2; break; |
| case 'c': t[i] = APR_DBD_TYPE_CLOB; q += 2; break; |
| case 'n': t[i] = APR_DBD_TYPE_NULL; q += 2; break; |
| } |
| } |
| break; |
| } |
| q++; |
| |
| switch (t[i]) { |
| case APR_DBD_TYPE_NONE: /* by default, we expect strings */ |
| t[i] = APR_DBD_TYPE_STRING; |
| break; |
| case APR_DBD_TYPE_BLOB: |
| case APR_DBD_TYPE_CLOB: /* three (3) more values passed in */ |
| nvals += 3; |
| break; |
| default: |
| break; |
| } |
| |
| /* insert database specific parameter reference */ |
| p += apr_snprintf(p, qlen - (p - pq), driver->pformat, ++i); |
| } else if (q[1] == '%') { /* reduce %% to % */ |
| *p++ = *q++; |
| } else { |
| *p++ = *q; |
| } |
| } else { |
| *p++ = *q; |
| } |
| } |
| *p = '\0'; |
| |
| return driver->prepare(pool,handle,pq,label,nargs,nvals,t,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,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,args); |
| } |
| |
| APU_DECLARE_NONSTD(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_NONSTD(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; |
| } |
| |
| APU_DECLARE(int) apr_dbd_pbquery(const apr_dbd_driver_t *driver, |
| apr_pool_t *pool, |
| apr_dbd_t *handle, int *nrows, |
| apr_dbd_prepared_t *statement, |
| const void **args) |
| { |
| return driver->pbquery(pool,handle,nrows,statement,args); |
| } |
| |
| APU_DECLARE(int) apr_dbd_pbselect(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, |
| const void **args) |
| { |
| return driver->pbselect(pool,handle,res,statement,random,args); |
| } |
| |
| APU_DECLARE_NONSTD(int) apr_dbd_pvbquery(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->pvbquery(pool,handle,nrows,statement,args); |
| va_end(args); |
| return ret; |
| } |
| |
| APU_DECLARE_NONSTD(int) apr_dbd_pvbselect(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->pvbselect(pool,handle,res,statement,random,args); |
| va_end(args); |
| return ret; |
| } |
| |
| APU_DECLARE(apr_status_t) apr_dbd_datum_get(const apr_dbd_driver_t *driver, |
| apr_dbd_row_t *row, int col, |
| apr_dbd_type_e type, void *data) |
| { |
| return driver->datum_get(row,col,type,data); |
| } |