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Overview
| Comment: | Improved the interface to the fts5() extension mechanism for enhanced security. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | branch-3.20 |
| Files: | files | file ages | folders |
| SHA3-256: | bc78235f547977f1a821342ca8f3e031 |
| User & Date: | drh 2017-07-17 15:38:57 |
Context
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2017-07-17
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| 17:46 | Interchange to branches within an "if" statement in sqlite3_value_pointer() in order to work around a bug in gcc. Closed-Leaf check-in: 8a606e4a user: drh tags: branch-3.20 | |
| 15:38 | Improved the interface to the fts5() extension mechanism for enhanced security. check-in: bc78235f user: drh tags: branch-3.20 | |
| 12:41 | Comment changes clarifying details of the pointer-type parameter. No changes to code. check-in: e4579e50 user: drh tags: branch-3.20 | |
Changes
Changes to ext/fts5/fts5_main.c.
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sqlite3_free(pGlobal); } static void fts5Fts5Func( sqlite3_context *pCtx, /* Function call context */ int nArg, /* Number of args */ sqlite3_value **apUnused /* Function arguments */ ){ Fts5Global *pGlobal = (Fts5Global*)sqlite3_user_data(pCtx); char buf[8]; UNUSED_PARAM2(nArg, apUnused); assert( nArg==0 ); assert( sizeof(buf)>=sizeof(pGlobal) ); memcpy(buf, (void*)&pGlobal, sizeof(pGlobal)); sqlite3_result_blob(pCtx, buf, sizeof(pGlobal), SQLITE_TRANSIENT); } /* ** Implementation of fts5_source_id() function. */ static void fts5SourceIdFunc( sqlite3_context *pCtx, /* Function call context */ ................................................................................ if( rc==SQLITE_OK ) rc = sqlite3Fts5IndexInit(db); if( rc==SQLITE_OK ) rc = sqlite3Fts5ExprInit(pGlobal, db); if( rc==SQLITE_OK ) rc = sqlite3Fts5AuxInit(&pGlobal->api); if( rc==SQLITE_OK ) rc = sqlite3Fts5TokenizerInit(&pGlobal->api); if( rc==SQLITE_OK ) rc = sqlite3Fts5VocabInit(pGlobal, db); if( rc==SQLITE_OK ){ rc = sqlite3_create_function( db, "fts5", 0, SQLITE_UTF8, p, fts5Fts5Func, 0, 0 ); } if( rc==SQLITE_OK ){ rc = sqlite3_create_function( db, "fts5_source_id", 0, SQLITE_UTF8, p, fts5SourceIdFunc, 0, 0 ); } |
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sqlite3_free(pGlobal); } static void fts5Fts5Func( sqlite3_context *pCtx, /* Function call context */ int nArg, /* Number of args */ sqlite3_value **apArg /* Function arguments */ ){ Fts5Global *pGlobal = (Fts5Global*)sqlite3_user_data(pCtx); fts5_api **ppApi; UNUSED_PARAM(nArg); assert( nArg==1 ); ppApi = (fts5_api**)sqlite3_value_pointer(apArg[0], "fts5_api_ptr"); if( ppApi ) *ppApi = &pGlobal->api; } /* ** Implementation of fts5_source_id() function. */ static void fts5SourceIdFunc( sqlite3_context *pCtx, /* Function call context */ ................................................................................ if( rc==SQLITE_OK ) rc = sqlite3Fts5IndexInit(db); if( rc==SQLITE_OK ) rc = sqlite3Fts5ExprInit(pGlobal, db); if( rc==SQLITE_OK ) rc = sqlite3Fts5AuxInit(&pGlobal->api); if( rc==SQLITE_OK ) rc = sqlite3Fts5TokenizerInit(&pGlobal->api); if( rc==SQLITE_OK ) rc = sqlite3Fts5VocabInit(pGlobal, db); if( rc==SQLITE_OK ){ rc = sqlite3_create_function( db, "fts5", 1, SQLITE_UTF8, p, fts5Fts5Func, 0, 0 ); } if( rc==SQLITE_OK ){ rc = sqlite3_create_function( db, "fts5_source_id", 0, SQLITE_UTF8, p, fts5SourceIdFunc, 0, 0 ); } |
Changes to ext/fts5/fts5_tcl.c.
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int rc = f5tDbPointer(interp, pObj, &db);
if( rc!=TCL_OK ){
return TCL_ERROR;
}else{
sqlite3_stmt *pStmt = 0;
fts5_api *pApi = 0;
rc = sqlite3_prepare_v2(db, "SELECT fts5()", -1, &pStmt, 0);
if( rc!=SQLITE_OK ){
Tcl_AppendResult(interp, "error: ", sqlite3_errmsg(db), 0);
return TCL_ERROR;
}
if( SQLITE_ROW==sqlite3_step(pStmt) ){
const void *pPtr = sqlite3_column_blob(pStmt, 0);
memcpy((void*)&pApi, pPtr, sizeof(pApi));
}
if( sqlite3_finalize(pStmt)!=SQLITE_OK ){
Tcl_AppendResult(interp, "error: ", sqlite3_errmsg(db), 0);
return TCL_ERROR;
}
*ppDb = db;
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int rc = f5tDbPointer(interp, pObj, &db);
if( rc!=TCL_OK ){
return TCL_ERROR;
}else{
sqlite3_stmt *pStmt = 0;
fts5_api *pApi = 0;
rc = sqlite3_prepare_v2(db, "SELECT fts5(?1)", -1, &pStmt, 0);
if( rc!=SQLITE_OK ){
Tcl_AppendResult(interp, "error: ", sqlite3_errmsg(db), 0);
return TCL_ERROR;
}
sqlite3_bind_pointer(pStmt, 1, (void*)&pApi, "fts5_api_ptr");
sqlite3_step(pStmt);
if( sqlite3_finalize(pStmt)!=SQLITE_OK ){
Tcl_AppendResult(interp, "error: ", sqlite3_errmsg(db), 0);
return TCL_ERROR;
}
*ppDb = db;
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Changes to ext/fts5/fts5_test_mi.c.
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** handle (accessible using sqlite3_errcode()/errmsg()).
*/
static int fts5_api_from_db(sqlite3 *db, fts5_api **ppApi){
sqlite3_stmt *pStmt = 0;
int rc;
*ppApi = 0;
rc = sqlite3_prepare(db, "SELECT fts5()", -1, &pStmt, 0);
if( rc==SQLITE_OK ){
if( SQLITE_ROW==sqlite3_step(pStmt)
&& sizeof(fts5_api*)==sqlite3_column_bytes(pStmt, 0)
){
memcpy(ppApi, sqlite3_column_blob(pStmt, 0), sizeof(fts5_api*));
}
rc = sqlite3_finalize(pStmt);
}
return rc;
}
................................................................................
/* Register the implementation of matchinfo() */
rc = pApi->xCreateFunction(pApi, "matchinfo", 0, fts5MatchinfoFunc, 0);
return rc;
}
#endif /* SQLITE_ENABLE_FTS5 */
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** handle (accessible using sqlite3_errcode()/errmsg()).
*/
static int fts5_api_from_db(sqlite3 *db, fts5_api **ppApi){
sqlite3_stmt *pStmt = 0;
int rc;
*ppApi = 0;
rc = sqlite3_prepare(db, "SELECT fts5(?1)", -1, &pStmt, 0);
if( rc==SQLITE_OK ){
sqlite3_bind_pointer(pStmt, 1, (void*)ppApi, "fts5_api_ptr");
(void)sqlite3_step(pStmt);
rc = sqlite3_finalize(pStmt);
}
return rc;
}
................................................................................
/* Register the implementation of matchinfo() */
rc = pApi->xCreateFunction(pApi, "matchinfo", 0, fts5MatchinfoFunc, 0);
return rc;
}
#endif /* SQLITE_ENABLE_FTS5 */
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Changes to ext/fts5/test/fts5matchinfo.test.
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} ;# foreach_detail_mode
#-------------------------------------------------------------------------
# Test that a bad fts5() return is detected
#
reset_db
proc xyz {} {}
db func fts5 -argcount 0 xyz
do_test 13.1 {
list [catch { sqlite3_fts5_register_matchinfo db } msg] $msg
} {1 SQLITE_ERROR}
#-------------------------------------------------------------------------
# Test that an invalid matchinfo() flag is detected
#
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} ;# foreach_detail_mode
#-------------------------------------------------------------------------
# Test that a bad fts5() return is detected
#
reset_db
proc xyz {} {}
db func fts5 -argcount 1 xyz
do_test 13.1 {
list [catch { sqlite3_fts5_register_matchinfo db } msg] $msg
} {1 SQLITE_ERROR}
#-------------------------------------------------------------------------
# Test that an invalid matchinfo() flag is detected
#
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