v8/test/intl/number-format/property-override.js

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// Copyright 2013 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following
// disclaimer in the documentation and/or other materials provided
// with the distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// Checks for security holes introduced by Object.property overrides.
// For example:
// Object.defineProperty(Array.prototype, 'locale', {
// set: function(value) {
// throw new Error('blah');
// },
// configurable: true,
// enumerable: false
// });
//
// would throw in case of (JS) x.locale = 'us' or (C++) x->Set('locale', 'us').
//
// Update both number-format.js and number-format.cc so they have the same
// list of properties.
// First get supported properties.
var properties = [];
// Some properties are optional and won't show up in resolvedOptions if
// they were not requested - currency, currencyDisplay,
// minimumSignificantDigits and maximumSignificantDigits - so we request them.
var options = Intl.NumberFormat(
undefined, {style: 'currency', currency: 'USD', currencyDisplay: 'name',
minimumSignificantDigits: 1, maximumSignificantDigits: 5}).
resolvedOptions();
for (var prop in options) {
if (options.hasOwnProperty(prop)) {
properties.push(prop);
}
}
var expectedProperties = [
'style', 'locale', 'numberingSystem',
'currency', 'currencyDisplay', 'useGrouping',
'minimumIntegerDigits', 'minimumFractionDigits',
'maximumFractionDigits', 'minimumSignificantDigits',
'maximumSignificantDigits'
];
assertEquals(expectedProperties.length, properties.length);
properties.forEach(function(prop) {
assertFalse(expectedProperties.indexOf(prop) === -1);
});
taintProperties(properties);
var locale = Intl.NumberFormat(undefined,
{currency: 'USD', currencyDisplay: 'name',
minimumIntegerDigits: 2,
numberingSystem: 'latn'}).
resolvedOptions().locale;