This source file includes following definitions.
- sqlite3LoadExtension
- sqlite3_load_extension
- sqlite3CloseExtensions
- sqlite3_enable_load_extension
- sqlite3_auto_extension
- sqlite3_reset_auto_extension
- sqlite3AutoLoadExtensions
#ifndef SQLITE_CORE
#define SQLITE_CORE 1
#endif
#include "sqlite3ext.h"
#include "sqliteInt.h"
#include <string.h>
#ifndef SQLITE_OMIT_LOAD_EXTENSION
#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
# define sqlite3_table_column_metadata 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
#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
#endif
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,
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,
sqlite3_overload_function,
sqlite3_prepare_v2,
sqlite3_prepare16_v2,
sqlite3_clear_bindings,
sqlite3_create_module_v2,
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,
sqlite3_threadsafe,
sqlite3_result_zeroblob,
sqlite3_result_error_code,
sqlite3_test_control,
sqlite3_randomness,
sqlite3_context_db_handle,
sqlite3_extended_result_codes,
sqlite3_limit,
sqlite3_next_stmt,
sqlite3_sql,
sqlite3_status,
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
};
static int sqlite3LoadExtension(
sqlite3 *db,
const char *zFile,
const char *zProc,
char **pzErrMsg
){
sqlite3_vfs *pVfs = db->pVfs;
void *handle;
int (*xInit)(sqlite3*,char**,const sqlite3_api_routines*);
char *zErrmsg = 0;
void **aHandle;
const int nMsg = 300;
if( pzErrMsg ) *pzErrMsg = 0;
if( (db->flags & SQLITE_LoadExtension)==0 ){
if( pzErrMsg ){
*pzErrMsg = sqlite3_mprintf("not authorized");
}
return SQLITE_ERROR;
}
if( zProc==0 ){
zProc = "sqlite3_extension_init";
}
handle = sqlite3OsDlOpen(pVfs, zFile);
if( handle==0 ){
if( pzErrMsg ){
*pzErrMsg = zErrmsg = sqlite3_malloc(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, zProc);
if( xInit==0 ){
if( pzErrMsg ){
*pzErrMsg = zErrmsg = sqlite3_malloc(nMsg);
if( zErrmsg ){
sqlite3_snprintf(nMsg, zErrmsg,
"no entry point [%s] in shared library [%s]", zProc,zFile);
sqlite3OsDlError(pVfs, nMsg-1, zErrmsg);
}
sqlite3OsDlClose(pVfs, handle);
}
return SQLITE_ERROR;
}else if( xInit(db, &zErrmsg, &sqlite3Apis) ){
if( pzErrMsg ){
*pzErrMsg = sqlite3_mprintf("error during initialization: %s", zErrmsg);
}
sqlite3_free(zErrmsg);
sqlite3OsDlClose(pVfs, handle);
return SQLITE_ERROR;
}
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,
const char *zFile,
const char *zProc,
char **pzErrMsg
){
int rc;
sqlite3_mutex_enter(db->mutex);
rc = sqlite3LoadExtension(db, zFile, zProc, pzErrMsg);
rc = sqlite3ApiExit(db, rc);
sqlite3_mutex_leave(db->mutex);
return rc;
}
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);
}
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
#ifdef SQLITE_OMIT_LOAD_EXTENSION
static const sqlite3_api_routines sqlite3Apis = { 0 };
#endif
typedef struct sqlite3AutoExtList sqlite3AutoExtList;
static SQLITE_WSD struct sqlite3AutoExtList {
int nExt;
void (**aExt)(void);
} sqlite3Autoext = { 0, 0 };
#ifdef SQLITE_OMIT_WSD
# define wsdAutoextInit \
sqlite3AutoExtList *x = &GLOBAL(sqlite3AutoExtList,sqlite3Autoext)
# define wsdAutoext x[0]
#else
# define wsdAutoextInit
# define wsdAutoext sqlite3Autoext
#endif
int sqlite3_auto_extension(void (*xInit)(void)){
int rc = SQLITE_OK;
#ifndef SQLITE_OMIT_AUTOINIT
rc = sqlite3_initialize();
if( rc ){
return rc;
}else
#endif
{
int 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 ){
int nByte = (wsdAutoext.nExt+1)*sizeof(wsdAutoext.aExt[0]);
void (**aNew)(void);
aNew = sqlite3_realloc(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;
}
}
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);
}
}
void sqlite3AutoLoadExtensions(sqlite3 *db){
int i;
int go = 1;
int (*xInit)(sqlite3*,char**,const sqlite3_api_routines*);
wsdAutoextInit;
if( wsdAutoext.nExt==0 ){
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 && xInit(db, &zErrmsg, &sqlite3Apis) ){
sqlite3Error(db, SQLITE_ERROR,
"automatic extension loading failed: %s", zErrmsg);
go = 0;
}
sqlite3_free(zErrmsg);
}
}