1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/os/persistentdata/persistentstorage/sqlite3api/SQLite/loadext.c Fri Jun 15 03:10:57 2012 +0200
1.3 @@ -0,0 +1,588 @@
1.4 +/*
1.5 +** 2006 June 7
1.6 +**
1.7 +** The author disclaims copyright to this source code. In place of
1.8 +** a legal notice, here is a blessing:
1.9 +**
1.10 +** May you do good and not evil.
1.11 +** May you find forgiveness for yourself and forgive others.
1.12 +** May you share freely, never taking more than you give.
1.13 +**
1.14 +*************************************************************************
1.15 +** This file contains code used to dynamically load extensions into
1.16 +** the SQLite library.
1.17 +**
1.18 +** $Id: loadext.c,v 1.54 2008/09/02 00:52:52 drh Exp $
1.19 +*/
1.20 +
1.21 +#ifndef SQLITE_CORE
1.22 + #define SQLITE_CORE 1 /* Disable the API redefinition in sqlite3ext.h */
1.23 +#endif
1.24 +#include "sqlite3ext.h"
1.25 +#include "sqliteInt.h"
1.26 +#include <string.h>
1.27 +#include <ctype.h>
1.28 +
1.29 +#ifndef SQLITE_OMIT_LOAD_EXTENSION
1.30 +
1.31 +/*
1.32 +** Some API routines are omitted when various features are
1.33 +** excluded from a build of SQLite. Substitute a NULL pointer
1.34 +** for any missing APIs.
1.35 +*/
1.36 +#ifndef SQLITE_ENABLE_COLUMN_METADATA
1.37 +# define sqlite3_column_database_name 0
1.38 +# define sqlite3_column_database_name16 0
1.39 +# define sqlite3_column_table_name 0
1.40 +# define sqlite3_column_table_name16 0
1.41 +# define sqlite3_column_origin_name 0
1.42 +# define sqlite3_column_origin_name16 0
1.43 +# define sqlite3_table_column_metadata 0
1.44 +#endif
1.45 +
1.46 +#ifdef SQLITE_OMIT_AUTHORIZATION
1.47 +# define sqlite3_set_authorizer 0
1.48 +#endif
1.49 +
1.50 +#ifdef SQLITE_OMIT_UTF16
1.51 +# define sqlite3_bind_text16 0
1.52 +# define sqlite3_collation_needed16 0
1.53 +# define sqlite3_column_decltype16 0
1.54 +# define sqlite3_column_name16 0
1.55 +# define sqlite3_column_text16 0
1.56 +# define sqlite3_complete16 0
1.57 +# define sqlite3_create_collation16 0
1.58 +# define sqlite3_create_function16 0
1.59 +# define sqlite3_errmsg16 0
1.60 +# define sqlite3_open16 0
1.61 +# define sqlite3_prepare16 0
1.62 +# define sqlite3_prepare16_v2 0
1.63 +# define sqlite3_result_error16 0
1.64 +# define sqlite3_result_text16 0
1.65 +# define sqlite3_result_text16be 0
1.66 +# define sqlite3_result_text16le 0
1.67 +# define sqlite3_value_text16 0
1.68 +# define sqlite3_value_text16be 0
1.69 +# define sqlite3_value_text16le 0
1.70 +# define sqlite3_column_database_name16 0
1.71 +# define sqlite3_column_table_name16 0
1.72 +# define sqlite3_column_origin_name16 0
1.73 +#endif
1.74 +
1.75 +#ifdef SQLITE_OMIT_COMPLETE
1.76 +# define sqlite3_complete 0
1.77 +# define sqlite3_complete16 0
1.78 +#endif
1.79 +
1.80 +#ifdef SQLITE_OMIT_PROGRESS_CALLBACK
1.81 +# define sqlite3_progress_handler 0
1.82 +#endif
1.83 +
1.84 +#ifdef SQLITE_OMIT_VIRTUALTABLE
1.85 +# define sqlite3_create_module 0
1.86 +# define sqlite3_create_module_v2 0
1.87 +# define sqlite3_declare_vtab 0
1.88 +#endif
1.89 +
1.90 +#ifdef SQLITE_OMIT_SHARED_CACHE
1.91 +# define sqlite3_enable_shared_cache 0
1.92 +#endif
1.93 +
1.94 +#ifdef SQLITE_OMIT_TRACE
1.95 +# define sqlite3_profile 0
1.96 +# define sqlite3_trace 0
1.97 +#endif
1.98 +
1.99 +#ifdef SQLITE_OMIT_GET_TABLE
1.100 +# define sqlite3_free_table 0
1.101 +# define sqlite3_get_table 0
1.102 +#endif
1.103 +
1.104 +#ifdef SQLITE_OMIT_INCRBLOB
1.105 +#define sqlite3_bind_zeroblob 0
1.106 +#define sqlite3_blob_bytes 0
1.107 +#define sqlite3_blob_close 0
1.108 +#define sqlite3_blob_open 0
1.109 +#define sqlite3_blob_read 0
1.110 +#define sqlite3_blob_write 0
1.111 +#endif
1.112 +
1.113 +/*
1.114 +** The following structure contains pointers to all SQLite API routines.
1.115 +** A pointer to this structure is passed into extensions when they are
1.116 +** loaded so that the extension can make calls back into the SQLite
1.117 +** library.
1.118 +**
1.119 +** When adding new APIs, add them to the bottom of this structure
1.120 +** in order to preserve backwards compatibility.
1.121 +**
1.122 +** Extensions that use newer APIs should first call the
1.123 +** sqlite3_libversion_number() to make sure that the API they
1.124 +** intend to use is supported by the library. Extensions should
1.125 +** also check to make sure that the pointer to the function is
1.126 +** not NULL before calling it.
1.127 +*/
1.128 +static const sqlite3_api_routines sqlite3Apis = {
1.129 + sqlite3_aggregate_context,
1.130 + sqlite3_aggregate_count,
1.131 + sqlite3_bind_blob,
1.132 + sqlite3_bind_double,
1.133 + sqlite3_bind_int,
1.134 + sqlite3_bind_int64,
1.135 + sqlite3_bind_null,
1.136 + sqlite3_bind_parameter_count,
1.137 + sqlite3_bind_parameter_index,
1.138 + sqlite3_bind_parameter_name,
1.139 + sqlite3_bind_text,
1.140 + sqlite3_bind_text16,
1.141 + sqlite3_bind_value,
1.142 + sqlite3_busy_handler,
1.143 + sqlite3_busy_timeout,
1.144 + sqlite3_changes,
1.145 + sqlite3_close,
1.146 + sqlite3_collation_needed,
1.147 + sqlite3_collation_needed16,
1.148 + sqlite3_column_blob,
1.149 + sqlite3_column_bytes,
1.150 + sqlite3_column_bytes16,
1.151 + sqlite3_column_count,
1.152 + sqlite3_column_database_name,
1.153 + sqlite3_column_database_name16,
1.154 + sqlite3_column_decltype,
1.155 + sqlite3_column_decltype16,
1.156 + sqlite3_column_double,
1.157 + sqlite3_column_int,
1.158 + sqlite3_column_int64,
1.159 + sqlite3_column_name,
1.160 + sqlite3_column_name16,
1.161 + sqlite3_column_origin_name,
1.162 + sqlite3_column_origin_name16,
1.163 + sqlite3_column_table_name,
1.164 + sqlite3_column_table_name16,
1.165 + sqlite3_column_text,
1.166 + sqlite3_column_text16,
1.167 + sqlite3_column_type,
1.168 + sqlite3_column_value,
1.169 + sqlite3_commit_hook,
1.170 + sqlite3_complete,
1.171 + sqlite3_complete16,
1.172 + sqlite3_create_collation,
1.173 + sqlite3_create_collation16,
1.174 + sqlite3_create_function,
1.175 + sqlite3_create_function16,
1.176 + sqlite3_create_module,
1.177 + sqlite3_data_count,
1.178 + sqlite3_db_handle,
1.179 + sqlite3_declare_vtab,
1.180 + sqlite3_enable_shared_cache,
1.181 + sqlite3_errcode,
1.182 + sqlite3_errmsg,
1.183 + sqlite3_errmsg16,
1.184 + sqlite3_exec,
1.185 + sqlite3_expired,
1.186 + sqlite3_finalize,
1.187 + sqlite3_free,
1.188 + sqlite3_free_table,
1.189 + sqlite3_get_autocommit,
1.190 + sqlite3_get_auxdata,
1.191 + sqlite3_get_table,
1.192 + 0, /* Was sqlite3_global_recover(), but that function is deprecated */
1.193 + sqlite3_interrupt,
1.194 + sqlite3_last_insert_rowid,
1.195 + sqlite3_libversion,
1.196 + sqlite3_libversion_number,
1.197 + sqlite3_malloc,
1.198 + sqlite3_mprintf,
1.199 + sqlite3_open,
1.200 + sqlite3_open16,
1.201 + sqlite3_prepare,
1.202 + sqlite3_prepare16,
1.203 + sqlite3_profile,
1.204 + sqlite3_progress_handler,
1.205 + sqlite3_realloc,
1.206 + sqlite3_reset,
1.207 + sqlite3_result_blob,
1.208 + sqlite3_result_double,
1.209 + sqlite3_result_error,
1.210 + sqlite3_result_error16,
1.211 + sqlite3_result_int,
1.212 + sqlite3_result_int64,
1.213 + sqlite3_result_null,
1.214 + sqlite3_result_text,
1.215 + sqlite3_result_text16,
1.216 + sqlite3_result_text16be,
1.217 + sqlite3_result_text16le,
1.218 + sqlite3_result_value,
1.219 + sqlite3_rollback_hook,
1.220 + sqlite3_set_authorizer,
1.221 + sqlite3_set_auxdata,
1.222 + sqlite3_snprintf,
1.223 + sqlite3_step,
1.224 + sqlite3_table_column_metadata,
1.225 + sqlite3_thread_cleanup,
1.226 + sqlite3_total_changes,
1.227 + sqlite3_trace,
1.228 + sqlite3_transfer_bindings,
1.229 + sqlite3_update_hook,
1.230 + sqlite3_user_data,
1.231 + sqlite3_value_blob,
1.232 + sqlite3_value_bytes,
1.233 + sqlite3_value_bytes16,
1.234 + sqlite3_value_double,
1.235 + sqlite3_value_int,
1.236 + sqlite3_value_int64,
1.237 + sqlite3_value_numeric_type,
1.238 + sqlite3_value_text,
1.239 + sqlite3_value_text16,
1.240 + sqlite3_value_text16be,
1.241 + sqlite3_value_text16le,
1.242 + sqlite3_value_type,
1.243 + sqlite3_vmprintf,
1.244 + /*
1.245 + ** The original API set ends here. All extensions can call any
1.246 + ** of the APIs above provided that the pointer is not NULL. But
1.247 + ** before calling APIs that follow, extension should check the
1.248 + ** sqlite3_libversion_number() to make sure they are dealing with
1.249 + ** a library that is new enough to support that API.
1.250 + *************************************************************************
1.251 + */
1.252 + sqlite3_overload_function,
1.253 +
1.254 + /*
1.255 + ** Added after 3.3.13
1.256 + */
1.257 + sqlite3_prepare_v2,
1.258 + sqlite3_prepare16_v2,
1.259 + sqlite3_clear_bindings,
1.260 +
1.261 + /*
1.262 + ** Added for 3.4.1
1.263 + */
1.264 + sqlite3_create_module_v2,
1.265 +
1.266 + /*
1.267 + ** Added for 3.5.0
1.268 + */
1.269 + sqlite3_bind_zeroblob,
1.270 + sqlite3_blob_bytes,
1.271 + sqlite3_blob_close,
1.272 + sqlite3_blob_open,
1.273 + sqlite3_blob_read,
1.274 + sqlite3_blob_write,
1.275 + sqlite3_create_collation_v2,
1.276 + sqlite3_file_control,
1.277 + sqlite3_memory_highwater,
1.278 + sqlite3_memory_used,
1.279 +#ifdef SQLITE_MUTEX_NOOP
1.280 + 0,
1.281 + 0,
1.282 + 0,
1.283 + 0,
1.284 + 0,
1.285 +#else
1.286 + sqlite3_mutex_alloc,
1.287 + sqlite3_mutex_enter,
1.288 + sqlite3_mutex_free,
1.289 + sqlite3_mutex_leave,
1.290 + sqlite3_mutex_try,
1.291 +#endif
1.292 + sqlite3_open_v2,
1.293 + sqlite3_release_memory,
1.294 + sqlite3_result_error_nomem,
1.295 + sqlite3_result_error_toobig,
1.296 + sqlite3_sleep,
1.297 + sqlite3_soft_heap_limit,
1.298 + sqlite3_vfs_find,
1.299 + sqlite3_vfs_register,
1.300 + sqlite3_vfs_unregister,
1.301 +
1.302 + /*
1.303 + ** Added for 3.5.8
1.304 + */
1.305 + sqlite3_threadsafe,
1.306 + sqlite3_result_zeroblob,
1.307 + sqlite3_result_error_code,
1.308 + sqlite3_test_control,
1.309 + sqlite3_randomness,
1.310 + sqlite3_context_db_handle,
1.311 +
1.312 + /*
1.313 + ** Added for 3.6.0
1.314 + */
1.315 + sqlite3_extended_result_codes,
1.316 + sqlite3_limit,
1.317 + sqlite3_next_stmt,
1.318 + sqlite3_sql,
1.319 + sqlite3_status,
1.320 +};
1.321 +
1.322 +/*
1.323 +** Attempt to load an SQLite extension library contained in the file
1.324 +** zFile. The entry point is zProc. zProc may be 0 in which case a
1.325 +** default entry point name (sqlite3_extension_init) is used. Use
1.326 +** of the default name is recommended.
1.327 +**
1.328 +** Return SQLITE_OK on success and SQLITE_ERROR if something goes wrong.
1.329 +**
1.330 +** If an error occurs and pzErrMsg is not 0, then fill *pzErrMsg with
1.331 +** error message text. The calling function should free this memory
1.332 +** by calling sqlite3DbFree(db, ).
1.333 +*/
1.334 +static int sqlite3LoadExtension(
1.335 + sqlite3 *db, /* Load the extension into this database connection */
1.336 + const char *zFile, /* Name of the shared library containing extension */
1.337 + const char *zProc, /* Entry point. Use "sqlite3_extension_init" if 0 */
1.338 + char **pzErrMsg /* Put error message here if not 0 */
1.339 +){
1.340 + sqlite3_vfs *pVfs = db->pVfs;
1.341 + void *handle;
1.342 + int (*xInit)(sqlite3*,char**,const sqlite3_api_routines*);
1.343 + char *zErrmsg = 0;
1.344 + void **aHandle;
1.345 +
1.346 + /* Ticket #1863. To avoid a creating security problems for older
1.347 + ** applications that relink against newer versions of SQLite, the
1.348 + ** ability to run load_extension is turned off by default. One
1.349 + ** must call sqlite3_enable_load_extension() to turn on extension
1.350 + ** loading. Otherwise you get the following error.
1.351 + */
1.352 + if( (db->flags & SQLITE_LoadExtension)==0 ){
1.353 + if( pzErrMsg ){
1.354 + *pzErrMsg = sqlite3_mprintf("not authorized");
1.355 + }
1.356 + return SQLITE_ERROR;
1.357 + }
1.358 +
1.359 + if( zProc==0 ){
1.360 + zProc = "sqlite3_extension_init";
1.361 + }
1.362 +
1.363 + handle = sqlite3OsDlOpen(pVfs, zFile);
1.364 + if( handle==0 ){
1.365 + if( pzErrMsg ){
1.366 + char zErr[256];
1.367 + zErr[sizeof(zErr)-1] = '\0';
1.368 + sqlite3_snprintf(sizeof(zErr)-1, zErr,
1.369 + "unable to open shared library [%s]", zFile);
1.370 + sqlite3OsDlError(pVfs, sizeof(zErr)-1, zErr);
1.371 + *pzErrMsg = sqlite3DbStrDup(0, zErr);
1.372 + }
1.373 + return SQLITE_ERROR;
1.374 + }
1.375 + xInit = (int(*)(sqlite3*,char**,const sqlite3_api_routines*))
1.376 + sqlite3OsDlSym(pVfs, handle, zProc);
1.377 + if( xInit==0 ){
1.378 + if( pzErrMsg ){
1.379 + char zErr[256];
1.380 + zErr[sizeof(zErr)-1] = '\0';
1.381 + sqlite3_snprintf(sizeof(zErr)-1, zErr,
1.382 + "no entry point [%s] in shared library [%s]", zProc,zFile);
1.383 + sqlite3OsDlError(pVfs, sizeof(zErr)-1, zErr);
1.384 + *pzErrMsg = sqlite3DbStrDup(0, zErr);
1.385 + sqlite3OsDlClose(pVfs, handle);
1.386 + }
1.387 + return SQLITE_ERROR;
1.388 + }else if( xInit(db, &zErrmsg, &sqlite3Apis) ){
1.389 + if( pzErrMsg ){
1.390 + *pzErrMsg = sqlite3_mprintf("error during initialization: %s", zErrmsg);
1.391 + }
1.392 + sqlite3_free(zErrmsg);
1.393 + sqlite3OsDlClose(pVfs, handle);
1.394 + return SQLITE_ERROR;
1.395 + }
1.396 +
1.397 + /* Append the new shared library handle to the db->aExtension array. */
1.398 + aHandle = sqlite3DbMallocZero(db, sizeof(handle)*(db->nExtension+1));
1.399 + if( aHandle==0 ){
1.400 + return SQLITE_NOMEM;
1.401 + }
1.402 + if( db->nExtension>0 ){
1.403 + memcpy(aHandle, db->aExtension, sizeof(handle)*db->nExtension);
1.404 + }
1.405 + sqlite3DbFree(db, db->aExtension);
1.406 + db->aExtension = aHandle;
1.407 +
1.408 + db->aExtension[db->nExtension++] = handle;
1.409 + return SQLITE_OK;
1.410 +}
1.411 +SQLITE_EXPORT int sqlite3_load_extension(
1.412 + sqlite3 *db, /* Load the extension into this database connection */
1.413 + const char *zFile, /* Name of the shared library containing extension */
1.414 + const char *zProc, /* Entry point. Use "sqlite3_extension_init" if 0 */
1.415 + char **pzErrMsg /* Put error message here if not 0 */
1.416 +){
1.417 + int rc;
1.418 + sqlite3_mutex_enter(db->mutex);
1.419 + rc = sqlite3LoadExtension(db, zFile, zProc, pzErrMsg);
1.420 + sqlite3_mutex_leave(db->mutex);
1.421 + return rc;
1.422 +}
1.423 +
1.424 +/*
1.425 +** Call this routine when the database connection is closing in order
1.426 +** to clean up loaded extensions
1.427 +*/
1.428 +void sqlite3CloseExtensions(sqlite3 *db){
1.429 + int i;
1.430 + assert( sqlite3_mutex_held(db->mutex) );
1.431 + for(i=0; i<db->nExtension; i++){
1.432 + sqlite3OsDlClose(db->pVfs, db->aExtension[i]);
1.433 + }
1.434 + sqlite3DbFree(db, db->aExtension);
1.435 +}
1.436 +
1.437 +/*
1.438 +** Enable or disable extension loading. Extension loading is disabled by
1.439 +** default so as not to open security holes in older applications.
1.440 +*/
1.441 +SQLITE_EXPORT int sqlite3_enable_load_extension(sqlite3 *db, int onoff){
1.442 + sqlite3_mutex_enter(db->mutex);
1.443 + if( onoff ){
1.444 + db->flags |= SQLITE_LoadExtension;
1.445 + }else{
1.446 + db->flags &= ~SQLITE_LoadExtension;
1.447 + }
1.448 + sqlite3_mutex_leave(db->mutex);
1.449 + return SQLITE_OK;
1.450 +}
1.451 +
1.452 +#endif /* SQLITE_OMIT_LOAD_EXTENSION */
1.453 +
1.454 +/*
1.455 +** The auto-extension code added regardless of whether or not extension
1.456 +** loading is supported. We need a dummy sqlite3Apis pointer for that
1.457 +** code if regular extension loading is not available. This is that
1.458 +** dummy pointer.
1.459 +*/
1.460 +#ifdef SQLITE_OMIT_LOAD_EXTENSION
1.461 +static const sqlite3_api_routines sqlite3Apis = { 0 };
1.462 +#endif
1.463 +
1.464 +
1.465 +/*
1.466 +** The following object holds the list of automatically loaded
1.467 +** extensions.
1.468 +**
1.469 +** This list is shared across threads. The SQLITE_MUTEX_STATIC_MASTER
1.470 +** mutex must be held while accessing this list.
1.471 +*/
1.472 +typedef struct sqlite3ExtType sqlite3ExtType;
1.473 +static SQLITE_WSD struct sqlite3ExtType {
1.474 + int nExt; /* Number of entries in aExt[] */
1.475 + void **aExt; /* Pointers to the extension init functions */
1.476 +} sqlite3Autoext = { 0, 0 };
1.477 +
1.478 +/* The "wsdAutoext" macro will resolve to the autoextension
1.479 +** state vector. If writable static data is unsupported on the target,
1.480 +** we have to locate the state vector at run-time. In the more common
1.481 +** case where writable static data is supported, wsdStat can refer directly
1.482 +** to the "sqlite3Autoext" state vector declared above.
1.483 +*/
1.484 +#ifdef SQLITE_OMIT_WSD
1.485 +# define wsdAutoextInit \
1.486 + sqlite3ExtType *x = &GLOBAL(sqlite3ExtType,sqlite3Autoext)
1.487 +# define wsdAutoext x[0]
1.488 +#else
1.489 +# define wsdAutoextInit
1.490 +# define wsdAutoext sqlite3Autoext
1.491 +#endif
1.492 +
1.493 +
1.494 +/*
1.495 +** Register a statically linked extension that is automatically
1.496 +** loaded by every new database connection.
1.497 +*/
1.498 +SQLITE_EXPORT int sqlite3_auto_extension(void *xInit){
1.499 + int rc = SQLITE_OK;
1.500 +#ifndef SQLITE_OMIT_AUTOINIT
1.501 + rc = sqlite3_initialize();
1.502 + if( rc ){
1.503 + return rc;
1.504 + }else
1.505 +#endif
1.506 + {
1.507 + int i;
1.508 +#ifndef SQLITE_MUTEX_NOOP
1.509 + sqlite3_mutex *mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER);
1.510 +#endif
1.511 + wsdAutoextInit;
1.512 + sqlite3_mutex_enter(mutex);
1.513 + for(i=0; i<wsdAutoext.nExt; i++){
1.514 + if( wsdAutoext.aExt[i]==xInit ) break;
1.515 + }
1.516 + if( i==wsdAutoext.nExt ){
1.517 + int nByte = (wsdAutoext.nExt+1)*sizeof(wsdAutoext.aExt[0]);
1.518 + void **aNew;
1.519 + aNew = sqlite3_realloc(wsdAutoext.aExt, nByte);
1.520 + if( aNew==0 ){
1.521 + rc = SQLITE_NOMEM;
1.522 + }else{
1.523 + wsdAutoext.aExt = aNew;
1.524 + wsdAutoext.aExt[wsdAutoext.nExt] = xInit;
1.525 + wsdAutoext.nExt++;
1.526 + }
1.527 + }
1.528 + sqlite3_mutex_leave(mutex);
1.529 + assert( (rc&0xff)==rc );
1.530 + return rc;
1.531 + }
1.532 +}
1.533 +
1.534 +/*
1.535 +** Reset the automatic extension loading mechanism.
1.536 +*/
1.537 +SQLITE_EXPORT void sqlite3_reset_auto_extension(void){
1.538 +#ifndef SQLITE_OMIT_AUTOINIT
1.539 + if( sqlite3_initialize()==SQLITE_OK )
1.540 +#endif
1.541 + {
1.542 +#ifndef SQLITE_MUTEX_NOOP
1.543 + sqlite3_mutex *mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER);
1.544 +#endif
1.545 + wsdAutoextInit;
1.546 + sqlite3_mutex_enter(mutex);
1.547 + sqlite3_free(wsdAutoext.aExt);
1.548 + wsdAutoext.aExt = 0;
1.549 + wsdAutoext.nExt = 0;
1.550 + sqlite3_mutex_leave(mutex);
1.551 + }
1.552 +}
1.553 +
1.554 +/*
1.555 +** Load all automatic extensions.
1.556 +*/
1.557 +int sqlite3AutoLoadExtensions(sqlite3 *db){
1.558 + int i;
1.559 + int go = 1;
1.560 + int rc = SQLITE_OK;
1.561 + int (*xInit)(sqlite3*,char**,const sqlite3_api_routines*);
1.562 +
1.563 + wsdAutoextInit;
1.564 + if( wsdAutoext.nExt==0 ){
1.565 + /* Common case: early out without every having to acquire a mutex */
1.566 + return SQLITE_OK;
1.567 + }
1.568 + for(i=0; go; i++){
1.569 + char *zErrmsg = 0;
1.570 +#ifndef SQLITE_MUTEX_NOOP
1.571 + sqlite3_mutex *mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER);
1.572 +#endif
1.573 + sqlite3_mutex_enter(mutex);
1.574 + if( i>=wsdAutoext.nExt ){
1.575 + xInit = 0;
1.576 + go = 0;
1.577 + }else{
1.578 + xInit = (int(*)(sqlite3*,char**,const sqlite3_api_routines*))
1.579 + wsdAutoext.aExt[i];
1.580 + }
1.581 + sqlite3_mutex_leave(mutex);
1.582 + if( xInit && xInit(db, &zErrmsg, &sqlite3Apis) ){
1.583 + sqlite3Error(db, SQLITE_ERROR,
1.584 + "automatic extension loading failed: %s", zErrmsg);
1.585 + go = 0;
1.586 + rc = SQLITE_ERROR;
1.587 + sqlite3_free(zErrmsg);
1.588 + }
1.589 + }
1.590 + return rc;
1.591 +}