diff options
Diffstat (limited to 'lib/libsqlite3/src/loadext.c')
| -rw-r--r-- | lib/libsqlite3/src/loadext.c | 778 |
1 files changed, 0 insertions, 778 deletions
diff --git a/lib/libsqlite3/src/loadext.c b/lib/libsqlite3/src/loadext.c deleted file mode 100644 index 1ae87d6b7e4..00000000000 --- a/lib/libsqlite3/src/loadext.c +++ /dev/null @@ -1,778 +0,0 @@ -/* -** 2006 June 7 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** This file contains code used to dynamically load extensions into -** the SQLite library. -*/ - -#ifndef SQLITE_CORE - #define SQLITE_CORE 1 /* Disable the API redefinition in sqlite3ext.h */ -#endif -#include "sqlite3ext.h" -#include "sqliteInt.h" -#include <string.h> - -#ifndef SQLITE_OMIT_LOAD_EXTENSION - -/* -** Some API routines are omitted when various features are -** excluded from a build of SQLite. Substitute a NULL pointer -** for any missing APIs. -*/ -#ifndef SQLITE_ENABLE_COLUMN_METADATA -# define sqlite3_column_database_name 0 -# define sqlite3_column_database_name16 0 -# define sqlite3_column_table_name 0 -# define sqlite3_column_table_name16 0 -# define sqlite3_column_origin_name 0 -# define sqlite3_column_origin_name16 0 -#endif - -#ifdef SQLITE_OMIT_AUTHORIZATION -# define sqlite3_set_authorizer 0 -#endif - -#ifdef SQLITE_OMIT_UTF16 -# define sqlite3_bind_text16 0 -# define sqlite3_collation_needed16 0 -# define sqlite3_column_decltype16 0 -# define sqlite3_column_name16 0 -# define sqlite3_column_text16 0 -# define sqlite3_complete16 0 -# define sqlite3_create_collation16 0 -# define sqlite3_create_function16 0 -# define sqlite3_errmsg16 0 -# define sqlite3_open16 0 -# define sqlite3_prepare16 0 -# define sqlite3_prepare16_v2 0 -# define sqlite3_result_error16 0 -# define sqlite3_result_text16 0 -# define sqlite3_result_text16be 0 -# define sqlite3_result_text16le 0 -# define sqlite3_value_text16 0 -# define sqlite3_value_text16be 0 -# define sqlite3_value_text16le 0 -# define sqlite3_column_database_name16 0 -# define sqlite3_column_table_name16 0 -# define sqlite3_column_origin_name16 0 -#endif - -#ifdef SQLITE_OMIT_COMPLETE -# define sqlite3_complete 0 -# define sqlite3_complete16 0 -#endif - -#ifdef SQLITE_OMIT_DECLTYPE -# define sqlite3_column_decltype16 0 -# define sqlite3_column_decltype 0 -#endif - -#ifdef SQLITE_OMIT_PROGRESS_CALLBACK -# define sqlite3_progress_handler 0 -#endif - -#ifdef SQLITE_OMIT_VIRTUALTABLE -# define sqlite3_create_module 0 -# define sqlite3_create_module_v2 0 -# define sqlite3_declare_vtab 0 -# define sqlite3_vtab_config 0 -# define sqlite3_vtab_on_conflict 0 -#endif - -#ifdef SQLITE_OMIT_SHARED_CACHE -# define sqlite3_enable_shared_cache 0 -#endif - -#ifdef SQLITE_OMIT_TRACE -# define sqlite3_profile 0 -# define sqlite3_trace 0 -#endif - -#ifdef SQLITE_OMIT_GET_TABLE -# define sqlite3_free_table 0 -# define sqlite3_get_table 0 -#endif - -#ifdef SQLITE_OMIT_INCRBLOB -#define sqlite3_bind_zeroblob 0 -#define sqlite3_blob_bytes 0 -#define sqlite3_blob_close 0 -#define sqlite3_blob_open 0 -#define sqlite3_blob_read 0 -#define sqlite3_blob_write 0 -#define sqlite3_blob_reopen 0 -#endif - -/* -** The following structure contains pointers to all SQLite API routines. -** A pointer to this structure is passed into extensions when they are -** loaded so that the extension can make calls back into the SQLite -** library. -** -** When adding new APIs, add them to the bottom of this structure -** in order to preserve backwards compatibility. -** -** Extensions that use newer APIs should first call the -** sqlite3_libversion_number() to make sure that the API they -** intend to use is supported by the library. Extensions should -** also check to make sure that the pointer to the function is -** not NULL before calling it. -*/ -static const sqlite3_api_routines sqlite3Apis = { - sqlite3_aggregate_context, -#ifndef SQLITE_OMIT_DEPRECATED - sqlite3_aggregate_count, -#else - 0, -#endif - sqlite3_bind_blob, - sqlite3_bind_double, - sqlite3_bind_int, - sqlite3_bind_int64, - sqlite3_bind_null, - sqlite3_bind_parameter_count, - sqlite3_bind_parameter_index, - sqlite3_bind_parameter_name, - sqlite3_bind_text, - sqlite3_bind_text16, - sqlite3_bind_value, - sqlite3_busy_handler, - sqlite3_busy_timeout, - sqlite3_changes, - sqlite3_close, - sqlite3_collation_needed, - sqlite3_collation_needed16, - sqlite3_column_blob, - sqlite3_column_bytes, - sqlite3_column_bytes16, - sqlite3_column_count, - sqlite3_column_database_name, - sqlite3_column_database_name16, - sqlite3_column_decltype, - sqlite3_column_decltype16, - sqlite3_column_double, - sqlite3_column_int, - sqlite3_column_int64, - sqlite3_column_name, - sqlite3_column_name16, - sqlite3_column_origin_name, - sqlite3_column_origin_name16, - sqlite3_column_table_name, - sqlite3_column_table_name16, - sqlite3_column_text, - sqlite3_column_text16, - sqlite3_column_type, - sqlite3_column_value, - sqlite3_commit_hook, - sqlite3_complete, - sqlite3_complete16, - sqlite3_create_collation, - sqlite3_create_collation16, - sqlite3_create_function, - sqlite3_create_function16, - sqlite3_create_module, - sqlite3_data_count, - sqlite3_db_handle, - sqlite3_declare_vtab, - sqlite3_enable_shared_cache, - sqlite3_errcode, - sqlite3_errmsg, - sqlite3_errmsg16, - sqlite3_exec, -#ifndef SQLITE_OMIT_DEPRECATED - sqlite3_expired, -#else - 0, -#endif - sqlite3_finalize, - sqlite3_free, - sqlite3_free_table, - sqlite3_get_autocommit, - sqlite3_get_auxdata, - sqlite3_get_table, - 0, /* Was sqlite3_global_recover(), but that function is deprecated */ - sqlite3_interrupt, - sqlite3_last_insert_rowid, - sqlite3_libversion, - sqlite3_libversion_number, - sqlite3_malloc, - sqlite3_mprintf, - sqlite3_open, - sqlite3_open16, - sqlite3_prepare, - sqlite3_prepare16, - sqlite3_profile, - sqlite3_progress_handler, - sqlite3_realloc, - sqlite3_reset, - sqlite3_result_blob, - sqlite3_result_double, - sqlite3_result_error, - sqlite3_result_error16, - sqlite3_result_int, - sqlite3_result_int64, - sqlite3_result_null, - sqlite3_result_text, - sqlite3_result_text16, - sqlite3_result_text16be, - sqlite3_result_text16le, - sqlite3_result_value, - sqlite3_rollback_hook, - sqlite3_set_authorizer, - sqlite3_set_auxdata, - sqlite3_snprintf, - sqlite3_step, - sqlite3_table_column_metadata, -#ifndef SQLITE_OMIT_DEPRECATED - sqlite3_thread_cleanup, -#else - 0, -#endif - sqlite3_total_changes, - sqlite3_trace, -#ifndef SQLITE_OMIT_DEPRECATED - sqlite3_transfer_bindings, -#else - 0, -#endif - sqlite3_update_hook, - sqlite3_user_data, - sqlite3_value_blob, - sqlite3_value_bytes, - sqlite3_value_bytes16, - sqlite3_value_double, - sqlite3_value_int, - sqlite3_value_int64, - sqlite3_value_numeric_type, - sqlite3_value_text, - sqlite3_value_text16, - sqlite3_value_text16be, - sqlite3_value_text16le, - sqlite3_value_type, - sqlite3_vmprintf, - /* - ** The original API set ends here. All extensions can call any - ** of the APIs above provided that the pointer is not NULL. But - ** before calling APIs that follow, extension should check the - ** sqlite3_libversion_number() to make sure they are dealing with - ** a library that is new enough to support that API. - ************************************************************************* - */ - sqlite3_overload_function, - - /* - ** Added after 3.3.13 - */ - sqlite3_prepare_v2, - sqlite3_prepare16_v2, - sqlite3_clear_bindings, - - /* - ** Added for 3.4.1 - */ - sqlite3_create_module_v2, - - /* - ** Added for 3.5.0 - */ - sqlite3_bind_zeroblob, - sqlite3_blob_bytes, - sqlite3_blob_close, - sqlite3_blob_open, - sqlite3_blob_read, - sqlite3_blob_write, - sqlite3_create_collation_v2, - sqlite3_file_control, - sqlite3_memory_highwater, - sqlite3_memory_used, -#ifdef SQLITE_MUTEX_OMIT - 0, - 0, - 0, - 0, - 0, -#else - sqlite3_mutex_alloc, - sqlite3_mutex_enter, - sqlite3_mutex_free, - sqlite3_mutex_leave, - sqlite3_mutex_try, -#endif - sqlite3_open_v2, - sqlite3_release_memory, - sqlite3_result_error_nomem, - sqlite3_result_error_toobig, - sqlite3_sleep, - sqlite3_soft_heap_limit, - sqlite3_vfs_find, - sqlite3_vfs_register, - sqlite3_vfs_unregister, - - /* - ** Added for 3.5.8 - */ - sqlite3_threadsafe, - sqlite3_result_zeroblob, - sqlite3_result_error_code, - sqlite3_test_control, - sqlite3_randomness, - sqlite3_context_db_handle, - - /* - ** Added for 3.6.0 - */ - sqlite3_extended_result_codes, - sqlite3_limit, - sqlite3_next_stmt, - sqlite3_sql, - sqlite3_status, - - /* - ** Added for 3.7.4 - */ - sqlite3_backup_finish, - sqlite3_backup_init, - sqlite3_backup_pagecount, - sqlite3_backup_remaining, - sqlite3_backup_step, -#ifndef SQLITE_OMIT_COMPILEOPTION_DIAGS - sqlite3_compileoption_get, - sqlite3_compileoption_used, -#else - 0, - 0, -#endif - sqlite3_create_function_v2, - sqlite3_db_config, - sqlite3_db_mutex, - sqlite3_db_status, - sqlite3_extended_errcode, - sqlite3_log, - sqlite3_soft_heap_limit64, - sqlite3_sourceid, - sqlite3_stmt_status, - sqlite3_strnicmp, -#ifdef SQLITE_ENABLE_UNLOCK_NOTIFY - sqlite3_unlock_notify, -#else - 0, -#endif -#ifndef SQLITE_OMIT_WAL - sqlite3_wal_autocheckpoint, - sqlite3_wal_checkpoint, - sqlite3_wal_hook, -#else - 0, - 0, - 0, -#endif - sqlite3_blob_reopen, - sqlite3_vtab_config, - sqlite3_vtab_on_conflict, - sqlite3_close_v2, - sqlite3_db_filename, - sqlite3_db_readonly, - sqlite3_db_release_memory, - sqlite3_errstr, - sqlite3_stmt_busy, - sqlite3_stmt_readonly, - sqlite3_stricmp, - sqlite3_uri_boolean, - sqlite3_uri_int64, - sqlite3_uri_parameter, - sqlite3_vsnprintf, - sqlite3_wal_checkpoint_v2, - /* Version 3.8.7 and later */ - sqlite3_auto_extension, - sqlite3_bind_blob64, - sqlite3_bind_text64, - sqlite3_cancel_auto_extension, - sqlite3_load_extension, - sqlite3_malloc64, - sqlite3_msize, - sqlite3_realloc64, - sqlite3_reset_auto_extension, - sqlite3_result_blob64, - sqlite3_result_text64, - sqlite3_strglob, - /* Version 3.8.11 and later */ - (sqlite3_value*(*)(const sqlite3_value*))sqlite3_value_dup, - sqlite3_value_free, - sqlite3_result_zeroblob64, - sqlite3_bind_zeroblob64, - /* Version 3.9.0 and later */ - sqlite3_value_subtype, - sqlite3_result_subtype -}; - -/* -** Attempt to load an SQLite extension library contained in the file -** zFile. The entry point is zProc. zProc may be 0 in which case a -** default entry point name (sqlite3_extension_init) is used. Use -** of the default name is recommended. -** -** Return SQLITE_OK on success and SQLITE_ERROR if something goes wrong. -** -** If an error occurs and pzErrMsg is not 0, then fill *pzErrMsg with -** error message text. The calling function should free this memory -** by calling sqlite3DbFree(db, ). -*/ -static int sqlite3LoadExtension( - sqlite3 *db, /* Load the extension into this database connection */ - const char *zFile, /* Name of the shared library containing extension */ - const char *zProc, /* Entry point. Use "sqlite3_extension_init" if 0 */ - char **pzErrMsg /* Put error message here if not 0 */ -){ - sqlite3_vfs *pVfs = db->pVfs; - void *handle; - int (*xInit)(sqlite3*,char**,const sqlite3_api_routines*); - char *zErrmsg = 0; - const char *zEntry; - char *zAltEntry = 0; - void **aHandle; - u64 nMsg = 300 + sqlite3Strlen30(zFile); - int ii; - - /* Shared library endings to try if zFile cannot be loaded as written */ - static const char *azEndings[] = { -#if SQLITE_OS_WIN - "dll" -#elif defined(__APPLE__) - "dylib" -#else - "so" -#endif - }; - - - if( pzErrMsg ) *pzErrMsg = 0; - - /* Ticket #1863. To avoid a creating security problems for older - ** applications that relink against newer versions of SQLite, the - ** ability to run load_extension is turned off by default. One - ** must call sqlite3_enable_load_extension() to turn on extension - ** loading. Otherwise you get the following error. - */ - if( (db->flags & SQLITE_LoadExtension)==0 ){ - if( pzErrMsg ){ - *pzErrMsg = sqlite3_mprintf("not authorized"); - } - return SQLITE_ERROR; - } - - zEntry = zProc ? zProc : "sqlite3_extension_init"; - - handle = sqlite3OsDlOpen(pVfs, zFile); -#if SQLITE_OS_UNIX || SQLITE_OS_WIN - for(ii=0; ii<ArraySize(azEndings) && handle==0; ii++){ - char *zAltFile = sqlite3_mprintf("%s.%s", zFile, azEndings[ii]); - if( zAltFile==0 ) return SQLITE_NOMEM; - handle = sqlite3OsDlOpen(pVfs, zAltFile); - sqlite3_free(zAltFile); - } -#endif - if( handle==0 ){ - if( pzErrMsg ){ - *pzErrMsg = zErrmsg = sqlite3_malloc64(nMsg); - if( zErrmsg ){ - sqlite3_snprintf(nMsg, zErrmsg, - "unable to open shared library [%s]", zFile); - sqlite3OsDlError(pVfs, nMsg-1, zErrmsg); - } - } - return SQLITE_ERROR; - } - xInit = (int(*)(sqlite3*,char**,const sqlite3_api_routines*)) - sqlite3OsDlSym(pVfs, handle, zEntry); - - /* If no entry point was specified and the default legacy - ** entry point name "sqlite3_extension_init" was not found, then - ** construct an entry point name "sqlite3_X_init" where the X is - ** replaced by the lowercase value of every ASCII alphabetic - ** character in the filename after the last "/" upto the first ".", - ** and eliding the first three characters if they are "lib". - ** Examples: - ** - ** /usr/local/lib/libExample5.4.3.so ==> sqlite3_example_init - ** C:/lib/mathfuncs.dll ==> sqlite3_mathfuncs_init - */ - if( xInit==0 && zProc==0 ){ - int iFile, iEntry, c; - int ncFile = sqlite3Strlen30(zFile); - zAltEntry = sqlite3_malloc64(ncFile+30); - if( zAltEntry==0 ){ - sqlite3OsDlClose(pVfs, handle); - return SQLITE_NOMEM; - } - memcpy(zAltEntry, "sqlite3_", 8); - for(iFile=ncFile-1; iFile>=0 && zFile[iFile]!='/'; iFile--){} - iFile++; - if( sqlite3_strnicmp(zFile+iFile, "lib", 3)==0 ) iFile += 3; - for(iEntry=8; (c = zFile[iFile])!=0 && c!='.'; iFile++){ - if( sqlite3Isalpha(c) ){ - zAltEntry[iEntry++] = (char)sqlite3UpperToLower[(unsigned)c]; - } - } - memcpy(zAltEntry+iEntry, "_init", 6); - zEntry = zAltEntry; - xInit = (int(*)(sqlite3*,char**,const sqlite3_api_routines*)) - sqlite3OsDlSym(pVfs, handle, zEntry); - } - if( xInit==0 ){ - if( pzErrMsg ){ - nMsg += sqlite3Strlen30(zEntry); - *pzErrMsg = zErrmsg = sqlite3_malloc64(nMsg); - if( zErrmsg ){ - sqlite3_snprintf(nMsg, zErrmsg, - "no entry point [%s] in shared library [%s]", zEntry, zFile); - sqlite3OsDlError(pVfs, nMsg-1, zErrmsg); - } - } - sqlite3OsDlClose(pVfs, handle); - sqlite3_free(zAltEntry); - return SQLITE_ERROR; - } - sqlite3_free(zAltEntry); - if( xInit(db, &zErrmsg, &sqlite3Apis) ){ - if( pzErrMsg ){ - *pzErrMsg = sqlite3_mprintf("error during initialization: %s", zErrmsg); - } - sqlite3_free(zErrmsg); - sqlite3OsDlClose(pVfs, handle); - return SQLITE_ERROR; - } - - /* Append the new shared library handle to the db->aExtension array. */ - aHandle = sqlite3DbMallocZero(db, sizeof(handle)*(db->nExtension+1)); - if( aHandle==0 ){ - return SQLITE_NOMEM; - } - if( db->nExtension>0 ){ - memcpy(aHandle, db->aExtension, sizeof(handle)*db->nExtension); - } - sqlite3DbFree(db, db->aExtension); - db->aExtension = aHandle; - - db->aExtension[db->nExtension++] = handle; - return SQLITE_OK; -} -int sqlite3_load_extension( - sqlite3 *db, /* Load the extension into this database connection */ - const char *zFile, /* Name of the shared library containing extension */ - const char *zProc, /* Entry point. Use "sqlite3_extension_init" if 0 */ - char **pzErrMsg /* Put error message here if not 0 */ -){ - int rc; - sqlite3_mutex_enter(db->mutex); - rc = sqlite3LoadExtension(db, zFile, zProc, pzErrMsg); - rc = sqlite3ApiExit(db, rc); - sqlite3_mutex_leave(db->mutex); - return rc; -} - -/* -** Call this routine when the database connection is closing in order -** to clean up loaded extensions -*/ -void sqlite3CloseExtensions(sqlite3 *db){ - int i; - assert( sqlite3_mutex_held(db->mutex) ); - for(i=0; i<db->nExtension; i++){ - sqlite3OsDlClose(db->pVfs, db->aExtension[i]); - } - sqlite3DbFree(db, db->aExtension); -} - -/* -** Enable or disable extension loading. Extension loading is disabled by -** default so as not to open security holes in older applications. -*/ -int sqlite3_enable_load_extension(sqlite3 *db, int onoff){ - sqlite3_mutex_enter(db->mutex); - if( onoff ){ - db->flags |= SQLITE_LoadExtension; - }else{ - db->flags &= ~SQLITE_LoadExtension; - } - sqlite3_mutex_leave(db->mutex); - return SQLITE_OK; -} - -#endif /* SQLITE_OMIT_LOAD_EXTENSION */ - -/* -** The auto-extension code added regardless of whether or not extension -** loading is supported. We need a dummy sqlite3Apis pointer for that -** code if regular extension loading is not available. This is that -** dummy pointer. -*/ -#ifdef SQLITE_OMIT_LOAD_EXTENSION -static const sqlite3_api_routines sqlite3Apis; -#endif - - -/* -** The following object holds the list of automatically loaded -** extensions. -** -** This list is shared across threads. The SQLITE_MUTEX_STATIC_MASTER -** mutex must be held while accessing this list. -*/ -typedef struct sqlite3AutoExtList sqlite3AutoExtList; -static SQLITE_WSD struct sqlite3AutoExtList { - u32 nExt; /* Number of entries in aExt[] */ - void (**aExt)(void); /* Pointers to the extension init functions */ -} sqlite3Autoext = { 0, 0 }; - -/* The "wsdAutoext" macro will resolve to the autoextension -** state vector. If writable static data is unsupported on the target, -** we have to locate the state vector at run-time. In the more common -** case where writable static data is supported, wsdStat can refer directly -** to the "sqlite3Autoext" state vector declared above. -*/ -#ifdef SQLITE_OMIT_WSD -# define wsdAutoextInit \ - sqlite3AutoExtList *x = &GLOBAL(sqlite3AutoExtList,sqlite3Autoext) -# define wsdAutoext x[0] -#else -# define wsdAutoextInit -# define wsdAutoext sqlite3Autoext -#endif - - -/* -** Register a statically linked extension that is automatically -** loaded by every new database connection. -*/ -int sqlite3_auto_extension(void (*xInit)(void)){ - int rc = SQLITE_OK; -#ifndef SQLITE_OMIT_AUTOINIT - rc = sqlite3_initialize(); - if( rc ){ - return rc; - }else -#endif - { - u32 i; -#if SQLITE_THREADSAFE - sqlite3_mutex *mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER); -#endif - wsdAutoextInit; - sqlite3_mutex_enter(mutex); - for(i=0; i<wsdAutoext.nExt; i++){ - if( wsdAutoext.aExt[i]==xInit ) break; - } - if( i==wsdAutoext.nExt ){ - u64 nByte = (wsdAutoext.nExt+1)*sizeof(wsdAutoext.aExt[0]); - void (**aNew)(void); - aNew = sqlite3_realloc64(wsdAutoext.aExt, nByte); - if( aNew==0 ){ - rc = SQLITE_NOMEM; - }else{ - wsdAutoext.aExt = aNew; - wsdAutoext.aExt[wsdAutoext.nExt] = xInit; - wsdAutoext.nExt++; - } - } - sqlite3_mutex_leave(mutex); - assert( (rc&0xff)==rc ); - return rc; - } -} - -/* -** Cancel a prior call to sqlite3_auto_extension. Remove xInit from the -** set of routines that is invoked for each new database connection, if it -** is currently on the list. If xInit is not on the list, then this -** routine is a no-op. -** -** Return 1 if xInit was found on the list and removed. Return 0 if xInit -** was not on the list. -*/ -int sqlite3_cancel_auto_extension(void (*xInit)(void)){ -#if SQLITE_THREADSAFE - sqlite3_mutex *mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER); -#endif - int i; - int n = 0; - wsdAutoextInit; - sqlite3_mutex_enter(mutex); - for(i=(int)wsdAutoext.nExt-1; i>=0; i--){ - if( wsdAutoext.aExt[i]==xInit ){ - wsdAutoext.nExt--; - wsdAutoext.aExt[i] = wsdAutoext.aExt[wsdAutoext.nExt]; - n++; - break; - } - } - sqlite3_mutex_leave(mutex); - return n; -} - -/* -** Reset the automatic extension loading mechanism. -*/ -void sqlite3_reset_auto_extension(void){ -#ifndef SQLITE_OMIT_AUTOINIT - if( sqlite3_initialize()==SQLITE_OK ) -#endif - { -#if SQLITE_THREADSAFE - sqlite3_mutex *mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER); -#endif - wsdAutoextInit; - sqlite3_mutex_enter(mutex); - sqlite3_free(wsdAutoext.aExt); - wsdAutoext.aExt = 0; - wsdAutoext.nExt = 0; - sqlite3_mutex_leave(mutex); - } -} - -/* -** Load all automatic extensions. -** -** If anything goes wrong, set an error in the database connection. -*/ -void sqlite3AutoLoadExtensions(sqlite3 *db){ - u32 i; - int go = 1; - int rc; - int (*xInit)(sqlite3*,char**,const sqlite3_api_routines*); - - wsdAutoextInit; - if( wsdAutoext.nExt==0 ){ - /* Common case: early out without every having to acquire a mutex */ - return; - } - for(i=0; go; i++){ - char *zErrmsg; -#if SQLITE_THREADSAFE - sqlite3_mutex *mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER); -#endif - sqlite3_mutex_enter(mutex); - if( i>=wsdAutoext.nExt ){ - xInit = 0; - go = 0; - }else{ - xInit = (int(*)(sqlite3*,char**,const sqlite3_api_routines*)) - wsdAutoext.aExt[i]; - } - sqlite3_mutex_leave(mutex); - zErrmsg = 0; - if( xInit && (rc = xInit(db, &zErrmsg, &sqlite3Apis))!=0 ){ - sqlite3ErrorWithMsg(db, rc, - "automatic extension loading failed: %s", zErrmsg); - go = 0; - } - sqlite3_free(zErrmsg); - } -} |