In order to adapt to V8 changes regarding storing private
properties on Externals, ExternalWrapper objects were introduced
in #51149.
However, this new code stores the type tag pointer and not the
128-bit value inside. This breaks some pre-existing code that
were making temporary tags. It also means that unloading the module
will cause existing External objects to have a tag pointer that
points nowhere (use-after-free bug).
Change ExternalWrapper to store tags by value to fix this regression.
PR-URL: https://github.com/nodejs/node/pull/52426
Reviewed-By: Gabriel Schulhof <gabrielschulhof@gmail.com>
Reviewed-By: Chengzhong Wu <legendecas@gmail.com>
Reviewed-By: Michael Dawson <midawson@redhat.com>
`napi_instanceof()` is insufficient for reliably establishing the data
type to which a pointer stored with `napi_wrap()` or
`napi_create_external()` inside a JavaScript object points. Thus, we
need a way to "mark" an object with a value that, when later retrieved,
can unambiguously tell us whether it is safe to cast the pointer stored
inside it to a certain structure.
Such a check must survive loading/unloading/multiple instances of an
addon, so we use UUIDs chosen *a priori*.
Fixes: https://github.com/nodejs/node/issues/28164
Co-authored-by: Anna Henningsen <github@addaleax.net>
PR-URL: https://github.com/nodejs/node/pull/28237
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Signed-off-by: Gabriel Schulhof <gabriel.schulhof@intel.com>
Add test coverage for passing `NULL` to each parameter of
`napi.*(propert|element)` and `napi_set_prototype`. In the case of
`napi_define_properties` also test setting various initializer fields
to `NULL`.
PR-URL: https://github.com/nodejs/node/pull/31488
Reviewed-By: David Carlier <devnexen@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
For napi_set_property(), each one of the following arguments is checked:
napi_env env,
napi_value object,
napi_value key,
napi_value* value.
For napi_has_property(), each one of the following arguments is checked:
napi_env env,
napi_value object,
napi_value key,
bool* result
For napi_get_property, each one of the following arguments is checked:
napi_env env,
napi_value object,
napi_value key,
napi_value* result
PR-URL: https://github.com/nodejs/node/pull/27628
Reviewed-By: Gabriel Schulhof <gabriel.schulhof@intel.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Vladimir Morozov