// This can be called when a DB lock and active key list lock are both held
NTSTATUS
SqliteDeleteKeyInternal_inlock_inDblock(
IN HANDLE handle,
IN PCWSTR pwszKeyName
)
{
NTSTATUS status = STATUS_SUCCESS;
PWSTR pwszParentKeyName = NULL;
PREG_KEY_HANDLE pKeyHandle = NULL;
// Do not free
PREG_KEY_CONTEXT pKeyCtx = NULL;
status = SqliteDeleteActiveKey_inlock((PCWSTR)pwszKeyName);
BAIL_ON_NT_STATUS(status);
status = SqliteOpenKeyInternal_inlock_inDblock(handle,
pwszKeyName,
0,
&pKeyHandle);
BAIL_ON_NT_STATUS(status);
BAIL_ON_NT_INVALID_POINTER(pKeyHandle);
pKeyCtx = pKeyHandle->pKey;
BAIL_ON_INVALID_KEY_CONTEXT(pKeyCtx);
// Delete all the values of this key
status = RegDbDeleteKey_inlock(ghCacheConnection, pKeyCtx->qwId, pKeyCtx->qwSdId, pwszKeyName);
BAIL_ON_NT_STATUS(status);
status = SqliteGetParentKeyName(pwszKeyName, '\\',&pwszParentKeyName);
BAIL_ON_NT_STATUS(status);
if (!LW_IS_NULL_OR_EMPTY_STR(pwszParentKeyName))
{
SqliteCacheResetParentKeySubKeyInfo_inlock(pwszParentKeyName);
}
cleanup:
SqliteSafeFreeKeyHandle_inlock(pKeyHandle);
LWREG_SAFE_FREE_MEMORY(pwszParentKeyName);
return status;
error:
goto cleanup;
}
NTSTATUS
SqliteGetValueAttributes_Internal(
IN HANDLE hRegConnection,
IN HKEY hKey,
IN OPTIONAL PCWSTR pwszSubKey,
IN PCWSTR pValueName,
IN OPTIONAL REG_DATA_TYPE dwType,
// Whether bail or not in case there is no value attributes
IN BOOLEAN bDoBail,
OUT OPTIONAL PLWREG_CURRENT_VALUEINFO* ppCurrentValue,
OUT OPTIONAL PLWREG_VALUE_ATTRIBUTES* ppValueAttributes
)
{
NTSTATUS status = STATUS_SUCCESS;
PWSTR pwszValueName = NULL;
PREG_DB_VALUE_ATTRIBUTES pRegEntry = NULL;
PREG_DB_VALUE pRegValueEntry = NULL;
BOOLEAN bIsWrongType = FALSE;
wchar16_t wszEmptyValueName[] = REG_EMPTY_VALUE_NAME_W;
PWSTR pwszKeyNameWithSubKey = NULL;
PREG_KEY_HANDLE pKeyHandle = (PREG_KEY_HANDLE)hKey;
PREG_KEY_CONTEXT pKeyCtx = NULL;
PREG_KEY_HANDLE pKeyHandleInUse = NULL;
PREG_KEY_CONTEXT pKeyCtxInUse = NULL;
PLWREG_CURRENT_VALUEINFO pCurrentValue = NULL;
BOOLEAN bInDbLock = FALSE;
BOOLEAN bInLock = FALSE;
PSTR pszError = NULL;
PREG_DB_CONNECTION pConn = (PREG_DB_CONNECTION)ghCacheConnection;
PREG_SRV_API_STATE pServerState = (PREG_SRV_API_STATE)hRegConnection;
BAIL_ON_NT_INVALID_POINTER(pKeyHandle);
pKeyCtx = pKeyHandle->pKey;
BAIL_ON_INVALID_KEY_CONTEXT(pKeyCtx);
if (!ppCurrentValue && !ppValueAttributes)
{
status = STATUS_INVALID_PARAMETER;
BAIL_ON_NT_STATUS(status);
}
if (pwszSubKey)
{
status = LwRtlWC16StringAllocatePrintfW(
&pwszKeyNameWithSubKey,
L"%ws\\%ws",
pKeyCtx->pwszKeyName,
pwszSubKey);
BAIL_ON_NT_STATUS(status);
}
if (!pServerState->pToken)
{
status = RegSrvCreateAccessToken(pServerState->peerUID,
pServerState->peerGID,
&pServerState->pToken);
BAIL_ON_NT_STATUS(status);
}
LWREG_LOCK_MUTEX(bInLock, &gActiveKeyList.mutex);
ENTER_SQLITE_LOCK(&pConn->lock, bInDbLock);
status = sqlite3_exec(
pConn->pDb,
"begin;",
NULL,
NULL,
&pszError);
BAIL_ON_SQLITE3_ERROR(status, pszError);
// pServerState->pToken should be created at this point
status = SqliteOpenKeyInternal_inlock_inDblock(
hRegConnection,
pwszSubKey ? pwszKeyNameWithSubKey : pKeyCtx->pwszKeyName,
KEY_QUERY_VALUE,
&pKeyHandleInUse);
BAIL_ON_NT_STATUS(status);
// ACL check
status = RegSrvAccessCheckKeyHandle(pKeyHandleInUse, KEY_QUERY_VALUE);
BAIL_ON_NT_STATUS(status);
pKeyCtxInUse = pKeyHandleInUse->pKey;
BAIL_ON_INVALID_KEY_CONTEXT(pKeyCtxInUse);
status = LwRtlWC16StringDuplicate(&pwszValueName, !pValueName ? wszEmptyValueName : pValueName);
BAIL_ON_NT_STATUS(status);
// Optionally get value
if (ppCurrentValue)
{
status = RegDbGetKeyValue_inlock(
ghCacheConnection,
pKeyCtxInUse->qwId,
pwszValueName,
dwType,
&bIsWrongType,
&pRegValueEntry);
if (!status)
{
status = LW_RTL_ALLOCATE((PVOID*)&pCurrentValue,
LWREG_CURRENT_VALUEINFO,
sizeof(*pCurrentValue));
BAIL_ON_NT_STATUS(status);
pCurrentValue->cbData = pRegValueEntry->dwValueLen;
pCurrentValue->dwType = pRegValueEntry->type;
if (pCurrentValue->cbData)
{
status = LW_RTL_ALLOCATE((PVOID*)&pCurrentValue->pvData,
VOID,
pCurrentValue->cbData);
BAIL_ON_NT_STATUS(status);
memcpy(pCurrentValue->pvData, pRegValueEntry->pValue, pCurrentValue->cbData);
}
}
else if (LW_STATUS_OBJECT_NAME_NOT_FOUND == status)
{
status = 0;
}
BAIL_ON_NT_STATUS(status);
}
// Get value attributes
if (ppValueAttributes)
{
status = RegDbGetValueAttributes_inlock(
ghCacheConnection,
pKeyCtxInUse->qwId,
pwszValueName,
REG_NONE,
&bIsWrongType,
&pRegEntry);
if (!bDoBail && LW_STATUS_OBJECT_NAME_NOT_FOUND == status)
{
status = LW_RTL_ALLOCATE((PVOID*)&pRegEntry,
REG_DB_VALUE_ATTRIBUTES,
sizeof(*pRegEntry));
BAIL_ON_NT_STATUS(status);
}
BAIL_ON_NT_STATUS(status);
}
status = sqlite3_exec(
pConn->pDb,
"end",
NULL,
NULL,
&pszError);
BAIL_ON_SQLITE3_ERROR(status, pszError);
REG_LOG_VERBOSE("Registry::sqldb.c SqliteGetValueAttributes_Internal() finished");
if (ppCurrentValue)
{
*ppCurrentValue = pCurrentValue;
pCurrentValue = NULL;
}
if (ppValueAttributes)
{
*ppValueAttributes = pRegEntry->pValueAttributes;
pRegEntry->pValueAttributes = NULL;
}
cleanup:
LEAVE_SQLITE_LOCK(&pConn->lock, bInDbLock);
LWREG_UNLOCK_MUTEX(bInLock, &gActiveKeyList.mutex);
SqliteSafeFreeKeyHandle(pKeyHandleInUse);
LWREG_SAFE_FREE_MEMORY(pwszValueName);
LWREG_SAFE_FREE_MEMORY(pwszKeyNameWithSubKey);
RegDbSafeFreeEntryValue(&pRegValueEntry);
RegSafeFreeCurrentValueInfo(&pCurrentValue);
RegDbSafeFreeEntryValueAttributes(&pRegEntry);
return status;
error:
if (pszError)
{
sqlite3_free(pszError);
}
sqlite3_exec(pConn->pDb,
"rollback",
NULL,
NULL,
NULL);
if (ppCurrentValue)
{
*ppCurrentValue = NULL;
}
if (ppValueAttributes)
{
*ppValueAttributes = NULL;
}
goto cleanup;
}