bugfix: reset modifications of sqlite3_vtab

.github/workflows/extensions-test.yml

@@ -0,0 +1,79 @@
+name: Extensions Tests
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+  merge_group:
+    branches: [ "main" ]
+
+env:
+  CARGO_TERM_COLOR: always
+  PROTOC_VERSION: 3.23.4
+
+jobs:
+  c-tests:
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: libsql-sqlite3
+    name: CR SQLite C Tests
+
+    steps:
+      - uses: hecrj/setup-rust-action@v1
+      - name: Checkout repository
+        uses: actions/checkout@v3
+      - name: build libsql
+        run: |
+          ./configure
+          make libsql
+      - name: build
+        run: |
+          cd ext/crr
+          make loadable
+      - name: test
+        run: |
+          cd ext/crr
+          make test
+
+  rs-tests:
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: libsql-sqlite3
+    name: CR SQLite Rust Tests
+
+    steps:
+      - uses: hecrj/setup-rust-action@v1
+      - name: Checkout repository
+        uses: actions/checkout@v3
+      - name: build libsql
+        run: |
+          ./configure
+          make libsql
+      - name: test
+        run: |
+          cd ext/crr/rs/core
+          cargo test --features=loadable_extension
+
+  extensions-tests:
+    runs-on: ubuntu-latest
+    name: Extensions Tests
+
+    steps:
+      - uses: hecrj/setup-rust-action@v1
+      - name: Checkout repository
+        uses: actions/checkout@v3
+      - name: build libsql and ffi bindings
+        run: |
+          cargo xtask build-bundled
+      - name: download extensions
+        run: |
+          cd libsql-sqlite3/test/rust_suite
+          export VSS_VERSION="v0.1.2"
+          wget https://github.com/asg017/sqlite-vss/releases/download/$VSS_VERSION/sqlite-vss-$VSS_VERSION-loadable-linux-x86_64.tar.gz
+          tar -xvf sqlite-vss-$VSS_VERSION-loadable-linux-x86_64.tar.gz -C src
+      - name: test
+        run: |
+          cd libsql-sqlite3/test/rust_suite
+          cargo test --features extensions

libsql-ffi/bundled/src/sqlite3.c

@@ -7658,7 +7658,6 @@ typedef struct sqlite3_vtab sqlite3_vtab;
 typedef struct sqlite3_index_info sqlite3_index_info;
 typedef struct sqlite3_vtab_cursor sqlite3_vtab_cursor;
 typedef struct sqlite3_module sqlite3_module;
-typedef struct libsql_module libsql_module;
 
 /*
 ** CAPI3REF: Virtual Table Object
@@ -7716,11 +7715,10 @@ struct sqlite3_module {
   ** Those below are for version 4 and greater. */
   int (*xIntegrity)(sqlite3_vtab *pVTab, const char *zSchema,
                     const char *zTabName, int mFlags, char **pzErr);
-};
 
-/* libSQL extensions for modules */
-struct libsql_module {
-  int iVersion;
+  // reserved for sqlite extension
+  void (*reserved[5])();
+  // following methods are added by libsql
   int (*xPreparedSql)(sqlite3_vtab_cursor*, const char*);
 };
 
@@ -7968,14 +7966,6 @@ SQLITE_API int sqlite3_create_module_v2(
   void *pClientData,         /* Client data for xCreate/xConnect */
   void(*xDestroy)(void*)     /* Module destructor function */
 );
-SQLITE_API int libsql_create_module(
-  sqlite3 *db,                  /* SQLite connection to register module with */
-  const char *zName,            /* Name of the module */
-  const sqlite3_module *p,      /* Methods for the module */
-  const libsql_module *pLibsql, /* Methods for the module */
-  void *pClientData,            /* Client data for xCreate/xConnect */
-  void(*xDestroy)(void*)        /* Module destructor function */
-);
 
 /*
 ** CAPI3REF: Remove Unnecessary Virtual Table Implementations
@@ -8014,7 +8004,6 @@ SQLITE_API int sqlite3_drop_modules(
 */
 struct sqlite3_vtab {
   const sqlite3_module *pModule;      /* The module for this virtual table */
-  const libsql_module *pLibsqlModule; /* The libSQL module for this virtual table */
   int nRef;                           /* Number of open cursors */
   char *zErrMsg;                      /* Error message from sqlite3_mprintf() */
   /* Virtual table implementations will typically add additional fields */
@@ -18561,7 +18550,6 @@ struct Savepoint {
 */
 struct Module {
   const sqlite3_module *pModule;       /* Callback pointers */
-  const libsql_module *pLibsqlModule;  /* Callback pointers for libSQL */
   const char *zName;                   /* Name passed to create_module() */
   int nRefModule;                      /* Number of pointers to this object */
   void *pAux;                          /* pAux passed to create_module() */
@@ -21836,7 +21824,6 @@ SQLITE_PRIVATE    Module *sqlite3VtabCreateModule(
      sqlite3*,
      const char*,
      const sqlite3_module*,
-     const libsql_module*,
      void*,
      void(*)(void*)
    );
@@ -101258,7 +101245,6 @@ case OP_VInitIn: {        /* out2, ncycle */
 */
 case OP_VPreparedSql: {
   const sqlite3_module *pModule;
-  const libsql_module *pLibsqlModule;
   sqlite3_vtab_cursor *pVCur;
   sqlite3_vtab *pVtab;
   VdbeCursor *pCur;
@@ -101269,14 +101255,13 @@ case OP_VPreparedSql: {
   pVCur = pCur->uc.pVCur;
   pVtab = pVCur->pVtab;
   pModule = pVtab->pModule;
-  pLibsqlModule = pVtab->pLibsqlModule;
 
   /* Invoke the xPreparedSql method */
-   if (pLibsqlModule) {
-    if( pLibsqlModule->xPreparedSql && p->zSql ){
-      rc = pLibsqlModule->xPreparedSql(pVCur, p->zSql);
-      if( rc ) goto abort_due_to_error;
-    }
+  if( pModule->iVersion>=700 ) {
+      if (pModule->xPreparedSql && p->zSql) {
+          rc = pModule->xPreparedSql(pVCur, p->zSql);
+          if (rc) goto abort_due_to_error;
+      }
   }
 
   break;
@@ -141651,7 +141636,7 @@ SQLITE_PRIVATE Module *sqlite3PragmaVtabRegister(sqlite3 *db, const char *zName)
   if( pName==0 ) return 0;
   if( (pName->mPragFlg & (PragFlg_Result0|PragFlg_Result1))==0 ) return 0;
   assert( sqlite3HashFind(&db->aModule, zName)==0 );
-  return sqlite3VtabCreateModule(db, zName, &pragmaVtabModule, NULL, (void*)pName, 0);
+  return sqlite3VtabCreateModule(db, zName, &pragmaVtabModule, (void*)pName, 0);
 }
 
 #endif /* SQLITE_OMIT_VIRTUALTABLE */
@@ -155133,7 +155118,6 @@ SQLITE_PRIVATE Module *sqlite3VtabCreateModule(
   sqlite3 *db,                        /* Database in which module is registered */
   const char *zName,                  /* Name assigned to this module */
   const sqlite3_module *pModule,      /* The definition of the module */
-  const libsql_module *pLibsqlModule, /* The definition of the libSQL module */
   void *pAux,                         /* Context pointer for xCreate/xConnect */
   void (*xDestroy)(void *)            /* Module destructor function */
 ){
@@ -155154,7 +155138,6 @@ SQLITE_PRIVATE Module *sqlite3VtabCreateModule(
     memcpy(zCopy, zName, nName+1);
     pMod->zName = zCopy;
     pMod->pModule = pModule;
-    pMod->pLibsqlModule = pLibsqlModule;
     pMod->pAux = pAux;
     pMod->xDestroy = xDestroy;
     pMod->pEpoTab = 0;
@@ -155183,14 +155166,13 @@ static int createModule(
   sqlite3 *db,                        /* Database in which module is registered */
   const char *zName,                  /* Name assigned to this module */
   const sqlite3_module *pModule,      /* The definition of the module */
-  const libsql_module *pLibsqlModule, /* The definition of the libSQL module */
   void *pAux,                         /* Context pointer for xCreate/xConnect */
   void (*xDestroy)(void *)            /* Module destructor function */
 ){
   int rc = SQLITE_OK;
 
   sqlite3_mutex_enter(db->mutex);
-  (void)sqlite3VtabCreateModule(db, zName, pModule, pLibsqlModule, pAux, xDestroy);
+  (void)sqlite3VtabCreateModule(db, zName, pModule, pAux, xDestroy);
   rc = sqlite3ApiExit(db, rc);
   if( rc!=SQLITE_OK && xDestroy ) xDestroy(pAux);
   sqlite3_mutex_leave(db->mutex);
@@ -155210,7 +155192,7 @@ SQLITE_API int sqlite3_create_module(
 #ifdef SQLITE_ENABLE_API_ARMOR
   if( !sqlite3SafetyCheckOk(db) || zName==0 ) return SQLITE_MISUSE_BKPT;
 #endif
-  return createModule(db, zName, pModule, NULL, pAux, 0);
+  return createModule(db, zName, pModule, pAux, 0);
 }
 
 /*
@@ -155226,24 +155208,7 @@ SQLITE_API int sqlite3_create_module_v2(
 #ifdef SQLITE_ENABLE_API_ARMOR
   if( !sqlite3SafetyCheckOk(db) || zName==0 ) return SQLITE_MISUSE_BKPT;
 #endif
-  return createModule(db, zName, pModule, NULL, pAux, xDestroy);
-}
-
-/*
-** External API function used to create a new virtual-table module.
-*/
-int libsql_create_module_v2(
-  sqlite3 *db,                         /* Database in which module is registered */
-  const char *zName,                   /* Name assigned to this module */
-  const sqlite3_module *pModule,       /* The definition of the module */
-  const libsql_module *pLibsqlModule,  /* The definition of the module */
-  void *pAux,                          /* Context pointer for xCreate/xConnect */
-  void (*xDestroy)(void *)             /* Module destructor function */
-){
-#ifdef SQLITE_ENABLE_API_ARMOR
-  if( !sqlite3SafetyCheckOk(db) || zName==0 ) return SQLITE_MISUSE_BKPT;
-#endif
-  return createModule(db, zName, pModule, pLibsqlModule, pAux, xDestroy);
+  return createModule(db, zName, pModule, pAux, xDestroy);
 }
 
 /*
@@ -155263,7 +155228,7 @@ SQLITE_API int sqlite3_drop_modules(sqlite3 *db, const char** azNames){
       for(ii=0; azNames[ii]!=0 && strcmp(azNames[ii],pMod->zName)!=0; ii++){}
       if( azNames[ii]!=0 ) continue;
     }
-    createModule(db, pMod->zName, 0, 0, 0, 0);
+    createModule(db, pMod->zName, 0, 0, 0);
   }
   return SQLITE_OK;
 }
@@ -155743,7 +155708,6 @@ static int vtabCallConstructor(
     ** the sqlite3_vtab object if successful.  */
     memset(pVTable->pVtab, 0, sizeof(pVTable->pVtab[0]));
     pVTable->pVtab->pModule = pMod->pModule;
-    pVTable->pVtab->pLibsqlModule = pMod->pLibsqlModule;
     pMod->nRefModule++;
     pVTable->nRef = 1;
     if( sCtx.bDeclared==0 ){

libsql-ffi/bundled/src/sqlite3.h

@@ -7284,7 +7284,6 @@ typedef struct sqlite3_vtab sqlite3_vtab;
 typedef struct sqlite3_index_info sqlite3_index_info;
 typedef struct sqlite3_vtab_cursor sqlite3_vtab_cursor;
 typedef struct sqlite3_module sqlite3_module;
-typedef struct libsql_module libsql_module;
 
 /*
 ** CAPI3REF: Virtual Table Object
@@ -7342,11 +7341,10 @@ struct sqlite3_module {
   ** Those below are for version 4 and greater. */
   int (*xIntegrity)(sqlite3_vtab *pVTab, const char *zSchema,
                     const char *zTabName, int mFlags, char **pzErr);
-};
 
-/* libSQL extensions for modules */
-struct libsql_module {
-  int iVersion;
+  // reserved for sqlite extension
+  void (*reserved[5])();
+  // following methods are added by libsql
   int (*xPreparedSql)(sqlite3_vtab_cursor*, const char*);
 };
 
@@ -7594,14 +7592,6 @@ SQLITE_API int sqlite3_create_module_v2(
   void *pClientData,         /* Client data for xCreate/xConnect */
   void(*xDestroy)(void*)     /* Module destructor function */
 );
-SQLITE_API int libsql_create_module(
-  sqlite3 *db,                  /* SQLite connection to register module with */
-  const char *zName,            /* Name of the module */
-  const sqlite3_module *p,      /* Methods for the module */
-  const libsql_module *pLibsql, /* Methods for the module */
-  void *pClientData,            /* Client data for xCreate/xConnect */
-  void(*xDestroy)(void*)        /* Module destructor function */
-);
 
 /*
 ** CAPI3REF: Remove Unnecessary Virtual Table Implementations
@@ -7640,7 +7630,6 @@ SQLITE_API int sqlite3_drop_modules(
 */
 struct sqlite3_vtab {
   const sqlite3_module *pModule;      /* The module for this virtual table */
-  const libsql_module *pLibsqlModule; /* The libSQL module for this virtual table */
   int nRef;                           /* Number of open cursors */
   char *zErrMsg;                      /* Error message from sqlite3_mprintf() */
   /* Virtual table implementations will typically add additional fields */

libsql-sqlite3/ext/crr/rs/core/src/create_cl_set_vtab.rs

@@ -140,8 +140,6 @@ fn connect_create_shared(
             nRef: 0,
             pModule: core::ptr::null(),
             zErrMsg: core::ptr::null_mut(),
-            #[cfg(feature = "libsql")]
-            pLibsqlModule: core::ptr::null_mut(),
         },
         base_table_name: base_name_from_virtual_name(args.table_name).to_owned(),
         db_name: args.database_name.to_owned(),
@@ -259,6 +257,8 @@ static MODULE: sqlite_nostd::module = sqlite_nostd::module {
     xRollbackTo: None,
     xShadowName: None,
     xIntegrity: None,
+    reserved: [None, None, None, None, None],
+    xPreparedSql: None,
 };
 
 pub fn create_module(db: *mut sqlite::sqlite3) -> Result<ResultCode, ResultCode> {

libsql-sqlite3/ext/crr/rs/core/src/unpack_columns_vtab.rs

@@ -38,8 +38,6 @@ extern "C" fn connect(
             nRef: 0,
             pModule: core::ptr::null(),
             zErrMsg: core::ptr::null_mut(),
-            #[cfg(feature = "libsql")]
-            pLibsqlModule: core::ptr::null_mut(),
         }));
         let _ = sqlite::vtab_config(db, sqlite::INNOCUOUS);
     }
@@ -256,6 +254,8 @@ static MODULE: sqlite_nostd::module = sqlite_nostd::module {
     xRollbackTo: None,
     xShadowName: None,
     xIntegrity: None,
+    reserved: [None, None, None, None, None],
+    xPreparedSql: None,
 };
 
 /**

libsql-sqlite3/ext/crr/src/changes-vtab.c

@@ -179,6 +179,7 @@ sqlite3_module crsql_changesModule = {
     /* xShadowName */ 0
 #ifdef LIBSQL
     ,
+    /* reserved */ NULL,
     /* xPreparedSql */ 0
 #endif
 };

libsql-sqlite3/src/pragma.c

@@ -2936,7 +2936,7 @@ Module *sqlite3PragmaVtabRegister(sqlite3 *db, const char *zName){
   if( pName==0 ) return 0;
   if( (pName->mPragFlg & (PragFlg_Result0|PragFlg_Result1))==0 ) return 0;
   assert( sqlite3HashFind(&db->aModule, zName)==0 );
-  return sqlite3VtabCreateModule(db, zName, &pragmaVtabModule, NULL, (void*)pName, 0);
+  return sqlite3VtabCreateModule(db, zName, &pragmaVtabModule, (void*)pName, 0);
 }
 
 #endif /* SQLITE_OMIT_VIRTUALTABLE */