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Handle errors in JSON.parse triggered by Proxies (#4134)

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Fixes: #4130

JerryScript-DCO-1.0-Signed-off-by: Peter Gal pgal.usz@partner.samsung.com
This commit is contained in:
Péter Gál
2020-08-14 08:25:43 +02:00
committed by GitHub
parent 8964a2bd18
commit 9d586fea76
3 changed files with 172 additions and 49 deletions
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jerry-core/ecma/builtin-objects/ecma-builtin-json.c
+84 -44
View File
@@ -601,6 +601,11 @@ ecma_builtin_json_parse_value (ecma_json_token_t *token_p) /**< token argument *
}
} /* ecma_builtin_json_parse_value */
static ecma_value_t
ecma_builtin_json_internalize_process_property (ecma_object_t *reviver_p,
ecma_object_t *object_p,
ecma_string_t *prop_name);
/**
* Abstract operation InternalizeJSONProperty
*
@@ -666,30 +671,17 @@ ecma_builtin_json_internalize_property (ecma_object_t *reviver_p, /**< reviver f
for (ecma_length_t i = 0; i < length; i++)
{
ecma_string_t *prop_index = ecma_new_ecma_string_from_length (i);
ecma_value_t new_element = ecma_builtin_json_internalize_property (reviver_p, object_p, prop_index);
if (ECMA_IS_VALUE_ERROR (new_element))
{
ecma_deref_ecma_string (prop_index);
ecma_deref_object (object_p);
return new_element;
}
if (ecma_is_value_undefined (new_element))
{
ecma_value_t delete_val = ecma_op_object_delete (object_p, prop_index, false);
JERRY_ASSERT (ecma_is_value_boolean (delete_val));
}
else
{
ecma_builtin_json_define_value_property (object_p,
prop_index,
new_element);
ecma_free_value (new_element);
}
ecma_value_t result = ecma_builtin_json_internalize_process_property (reviver_p, object_p, prop_index);
ecma_deref_ecma_string (prop_index);
if (ECMA_IS_VALUE_ERROR (result))
{
ecma_deref_object (object_p);
return result;
}
JERRY_ASSERT (result == ECMA_VALUE_TRUE);
}
}
/* 3.d */
@@ -697,8 +689,15 @@ ecma_builtin_json_internalize_property (ecma_object_t *reviver_p, /**< reviver f
{
ecma_collection_t *props_p = ecma_op_object_get_enumerable_property_names (object_p,
ECMA_ENUMERABLE_PROPERTY_KEYS);
#if ENABLED (JERRY_ESNEXT)
if (JERRY_UNLIKELY (props_p == NULL))
{
ecma_deref_object (object_p);
return ECMA_VALUE_ERROR;
}
#else /* !ENABLED (JERRY_ESNEXT) */
JERRY_ASSERT (props_p != NULL);
#endif /* ENABLED (JERRY_ESNEXT) */
ecma_value_t *buffer_p = props_p->buffer_p;
@@ -706,35 +705,16 @@ ecma_builtin_json_internalize_property (ecma_object_t *reviver_p, /**< reviver f
for (uint32_t i = 0; i < props_p->item_count; i++)
{
ecma_string_t *property_name_p = ecma_get_string_from_value (buffer_p[i]);
ecma_value_t result = ecma_builtin_json_internalize_process_property (reviver_p, object_p, property_name_p);
/* 3.d.iii.1 */
ecma_value_t result = ecma_builtin_json_internalize_property (reviver_p, object_p, property_name_p);
/* 3.d.iii.2 */
if (ECMA_IS_VALUE_ERROR (result))
{
ecma_collection_free (props_p);
ecma_deref_object (object_p);
return result;
}
/* 3.d.iii.3 */
if (ecma_is_value_undefined (result))
{
ecma_value_t delete_val = ecma_op_general_object_delete (object_p,
property_name_p,
false);
JERRY_ASSERT (ecma_is_value_boolean (delete_val));
}
/* 3.d.iii.4 */
else
{
ecma_builtin_json_define_value_property (object_p,
property_name_p,
result);
ecma_free_value (result);
}
JERRY_ASSERT (result == ECMA_VALUE_TRUE);
}
ecma_collection_free (props_p);
@@ -754,6 +734,66 @@ ecma_builtin_json_internalize_property (ecma_object_t *reviver_p, /**< reviver f
return ret_value;
} /* ecma_builtin_json_internalize_property */
/**
* Part of the InternalizeJSONProperty abstract method.
*
* See also:
* ECMA-262 v5, 15.12.2
* ECMA-262 v11, 24.5.1.1 in step 2
*
* @return ECMA_VALUE_TRUE - if no error occured.
* error if one of the operation failed.
*/
static
ecma_value_t ecma_builtin_json_internalize_process_property (ecma_object_t *reviver_p, /**< reviver function */
ecma_object_t *object_p, /**< holder object */
ecma_string_t *prop_name) /**< property name */
{
/* ES11: 2.b.iii.1 / 2.c.ii.1 */
ecma_value_t new_element = ecma_builtin_json_internalize_property (reviver_p, object_p, prop_name);
if (ECMA_IS_VALUE_ERROR (new_element))
{
return new_element;
}
/* ES11: 2.b.iii.2 / 2.c.ii.2 */
if (ecma_is_value_undefined (new_element))
{
/* ES11: 2.b.iii.2.a / 2.c.ii.2.a */
ecma_value_t delete_val = ecma_op_object_delete (object_p, prop_name, false);
#if ENABLED (JERRY_ESNEXT)
if (ECMA_IS_VALUE_ERROR (delete_val))
{
return delete_val;
}
#endif /* ENABLED (JERRY_ESNEXT) */
JERRY_ASSERT (ecma_is_value_boolean (delete_val));
}
else
{
/* ES11: 2.b.iii.3.a / 2.c.ii.3.a */
ecma_value_t def_value = ecma_builtin_helper_def_prop (object_p,
prop_name,
new_element,
ECMA_PROPERTY_CONFIGURABLE_ENUMERABLE_WRITABLE);
ecma_free_value (new_element);
#if ENABLED (JERRY_ESNEXT)
if (ECMA_IS_VALUE_ERROR (def_value))
{
return def_value;
}
#endif /* ENABLED (JERRY_ESNEXT) */
JERRY_ASSERT (ecma_is_value_boolean (def_value));
}
return ECMA_VALUE_TRUE;
} /* ecma_builtin_json_internalize_process_property */
/**
* Function to set a string token from the given arguments, fills its fields and advances the string pointer.
*