/* 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(&symbol, modname, symname, pool); if (rv != APR_SUCCESS) { /* APR_EDSOOPEN or APR_ESYMNOTFOUND? */ if (rv == APR_EINIT) { /* previously loaded?!? */ name = apr_pstrdup(pool, name); apr_hash_set(drivers, name, APR_HASH_KEY_STRING, *driver); rv = APR_SUCCESS; } goto unlock; } *driver = symbol; if ((*driver)->init) { (*driver)->init(pool); } name = apr_pstrdup(pool, name); apr_hash_set(drivers, name, APR_HASH_KEY_STRING, *driver); unlock: 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); }
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