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Overview
| Comment: | Return SQLITE_MISUSE if an application attempts to register a virtual table module with the same name as an existing module. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | shared-schema |
| Files: | files | file ages | folders |
| SHA1: |
ea2cd55e098b21cd8997fd6c1978131d |
| User & Date: | dan 2012-05-16 14:29:11 |
Context
|
2012-06-05
| ||
| 19:20 | Merge the latest trunk changes into shared-schema branch. Also fix a C99-ism in that branch. check-in: 42338e9e user: drh tags: shared-schema | |
|
2012-05-16
| ||
| 14:29 | Return SQLITE_MISUSE if an application attempts to register a virtual table module with the same name as an existing module. check-in: ea2cd55e user: dan tags: shared-schema | |
| 01:24 | Avoid using sqlite3ResetAllSchemasOfConnection() purely for its side-effects. check-in: 5587c73b user: drh tags: shared-schema | |
Changes
Changes to src/test8.c.
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echoRollbackTo
};
/*
** Decode a pointer to an sqlite3 object.
*/
extern int getDbPointer(Tcl_Interp *interp, const char *zA, sqlite3 **ppDb);
static void moduleDestroy(void *p){
sqlite3_free(p);
}
/*
** Register the echo virtual table module.
................................................................................
*/
static int register_echo_module(
ClientData clientData, /* Pointer to sqlite3_enable_XXX function */
Tcl_Interp *interp, /* The TCL interpreter that invoked this command */
int objc, /* Number of arguments */
Tcl_Obj *CONST objv[] /* Command arguments */
){
sqlite3 *db;
EchoModule *pMod;
if( objc!=2 ){
Tcl_WrongNumArgs(interp, 1, objv, "DB");
return TCL_ERROR;
}
if( getDbPointer(interp, Tcl_GetString(objv[1]), &db) ) return TCL_ERROR;
/* Virtual table module "echo" */
pMod = sqlite3_malloc(sizeof(EchoModule));
pMod->interp = interp;
sqlite3_create_module_v2(db, "echo", &echoModule, (void*)pMod, moduleDestroy);
/* Virtual table module "echo_v2" */
pMod = sqlite3_malloc(sizeof(EchoModule));
pMod->interp = interp;
sqlite3_create_module_v2(db, "echo_v2",
&echoModuleV2, (void*)pMod, moduleDestroy
);
return TCL_OK;
}
/*
** Tcl interface to sqlite3_declare_vtab, invoked as follows from Tcl:
**
** sqlite3_declare_vtab DB SQL
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echoRollbackTo }; /* ** Decode a pointer to an sqlite3 object. */ extern int getDbPointer(Tcl_Interp *interp, const char *zA, sqlite3 **ppDb); extern const char *sqlite3TestErrorName(int rc); static void moduleDestroy(void *p){ sqlite3_free(p); } /* ** Register the echo virtual table module. ................................................................................ */ static int register_echo_module( ClientData clientData, /* Pointer to sqlite3_enable_XXX function */ Tcl_Interp *interp, /* The TCL interpreter that invoked this command */ int objc, /* Number of arguments */ Tcl_Obj *CONST objv[] /* Command arguments */ ){ int rc; sqlite3 *db; EchoModule *pMod; if( objc!=2 ){ Tcl_WrongNumArgs(interp, 1, objv, "DB"); return TCL_ERROR; } if( getDbPointer(interp, Tcl_GetString(objv[1]), &db) ) return TCL_ERROR; /* Virtual table module "echo" */ pMod = sqlite3_malloc(sizeof(EchoModule)); pMod->interp = interp; rc = sqlite3_create_module_v2( db, "echo", &echoModule, (void*)pMod, moduleDestroy ); /* Virtual table module "echo_v2" */ if( rc==SQLITE_OK ){ pMod = sqlite3_malloc(sizeof(EchoModule)); pMod->interp = interp; rc = sqlite3_create_module_v2(db, "echo_v2", &echoModuleV2, (void*)pMod, moduleDestroy ); } Tcl_SetResult(interp, (char *)sqlite3TestErrorName(rc), TCL_STATIC); return TCL_OK; } /* ** Tcl interface to sqlite3_declare_vtab, invoked as follows from Tcl: ** ** sqlite3_declare_vtab DB SQL |
Changes to src/vtab.c.
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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 */
void *pAux, /* Context pointer for xCreate/xConnect */
void (*xDestroy)(void *) /* Module destructor function */
){
int rc, nName;
Module *pMod;
sqlite3_mutex_enter(db->mutex);
nName = sqlite3Strlen30(zName);
pMod = (Module *)sqlite3DbMallocRaw(db, sizeof(Module) + nName + 1);
if( pMod ){
Module *pDel;
char *zCopy = (char *)(&pMod[1]);
memcpy(zCopy, zName, nName+1);
pMod->zName = zCopy;
pMod->pModule = pModule;
pMod->pAux = pAux;
pMod->xDestroy = xDestroy;
pDel = (Module *)sqlite3HashInsert(&db->aModule, zCopy, nName, (void*)pMod);
if( pDel && pDel->xDestroy ){
sqlite3ResetAllSchemasOfConnection(db);
pDel->xDestroy(pDel->pAux);
}
sqlite3DbFree(db, pDel);
if( pDel==pMod ){
db->mallocFailed = 1;
}
}else if( xDestroy ){
xDestroy(pAux);
}
rc = sqlite3ApiExit(db, SQLITE_OK);
sqlite3_mutex_leave(db->mutex);
return rc;
}
/*
** External API function used to create a new virtual-table module.
|
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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 */
void *pAux, /* Context pointer for xCreate/xConnect */
void (*xDestroy)(void *) /* Module destructor function */
){
int rc = SQLITE_OK;
int nName;
sqlite3_mutex_enter(db->mutex);
nName = sqlite3Strlen30(zName);
if( sqlite3HashFind(&db->aModule, zName, nName) ){
rc = SQLITE_MISUSE_BKPT;
}else{
Module *pMod;
pMod = (Module *)sqlite3DbMallocRaw(db, sizeof(Module) + nName + 1);
if( pMod ){
Module *pDel;
char *zCopy = (char *)(&pMod[1]);
memcpy(zCopy, zName, nName+1);
pMod->zName = zCopy;
pMod->pModule = pModule;
pMod->pAux = pAux;
pMod->xDestroy = xDestroy;
pDel = (Module *)sqlite3HashInsert(&db->aModule,zCopy,nName,(void*)pMod);
assert( pDel==0 || pDel==pMod );
if( pDel ){
db->mallocFailed = 1;
sqlite3DbFree(db, pDel);
}
}
}
rc = sqlite3ApiExit(db, rc);
if( rc!=SQLITE_OK && xDestroy ) xDestroy(pAux);
sqlite3_mutex_leave(db->mutex);
return rc;
}
/*
** External API function used to create a new virtual-table module.
|
Changes to test/vtab1.test.
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{xFilter {SELECT rowid, * FROM 't6'}}
} {
set echo_module {}
do_execsql_test 18.$tn.1 $sql $res
do_test 18.$tn.2 { lrange $::echo_module 2 end } $filter
}
do_execsql_test 18.2.x { PRAGMA case_sensitive_like = OFF }
finish_test
|
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{xFilter {SELECT rowid, * FROM 't6'}}
} {
set echo_module {}
do_execsql_test 18.$tn.1 $sql $res
do_test 18.$tn.2 { lrange $::echo_module 2 end } $filter
}
do_execsql_test 18.2.x { PRAGMA case_sensitive_like = OFF }
#-------------------------------------------------------------------------
# Test that an existing module may not be overridden.
#
do_test 19.1 {
sqlite3 db2 test.db
register_echo_module [sqlite3_connection_pointer db2]
} SQLITE_OK
do_test 19.2 {
register_echo_module [sqlite3_connection_pointer db2]
} SQLITE_MISUSE
do_test 19.3 {
db2 close
} {}
finish_test
|