You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
101 lines
4.0 KiB
101 lines
4.0 KiB
// Copyright (c) 2014-2019, MyMonero.com
|
|
//
|
|
// All rights reserved.
|
|
//
|
|
// Redistribution and use in source and binary forms, with or without modification, are
|
|
// permitted provided that the following conditions are met:
|
|
//
|
|
// 1. Redistributions of source code must retain the above copyright notice, this list of
|
|
// conditions and the following disclaimer.
|
|
//
|
|
// 2. 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.
|
|
//
|
|
// 3. Neither the name of the copyright holder 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 HOLDER 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.
|
|
//
|
|
"use strict";
|
|
//
|
|
const Lazy_KeyImage = function(
|
|
mutable_keyImagesByCacheKey, // pass a mutable JS dictionary
|
|
tx_pub_key,
|
|
out_index,
|
|
public_address,
|
|
view_key__private,
|
|
spend_key__public,
|
|
spend_key__private,
|
|
coreBridge_instance // must pass this so this fn can remain synchronous
|
|
) {
|
|
var cache_index = tx_pub_key + ":" + public_address + ":" + out_index;
|
|
const cached__key_image = mutable_keyImagesByCacheKey[cache_index];
|
|
if (
|
|
typeof cached__key_image !== "undefined" &&
|
|
cached__key_image !== null
|
|
) {
|
|
return cached__key_image;
|
|
}
|
|
var key_image = coreBridge_instance.generate_key_image(
|
|
tx_pub_key,
|
|
view_key__private,
|
|
spend_key__public,
|
|
spend_key__private,
|
|
out_index,
|
|
);
|
|
// cache:
|
|
mutable_keyImagesByCacheKey[cache_index] = key_image;
|
|
//
|
|
return key_image;
|
|
};
|
|
exports.Lazy_KeyImage = Lazy_KeyImage;
|
|
//
|
|
//
|
|
// Managed caches - Can be used by apps which can't send a mutable_keyImagesByCacheKey
|
|
const __global_managed_keyImageCaches_by_walletId = {};
|
|
function _managedKeyImageCacheWalletIdForWalletWith(public_address) {
|
|
// NOTE: making the assumption that public_address is unique enough to identify a wallet for caching....
|
|
// FIXME: with subaddresses, is that still the case? would we need to split them up by subaddr anyway?
|
|
if (
|
|
public_address == "" ||
|
|
!public_address ||
|
|
typeof public_address == "undefined"
|
|
) {
|
|
throw "managedKeyImageCacheIdentifierForWalletWith: Illegal public_address";
|
|
}
|
|
return "" + public_address;
|
|
}
|
|
const Lazy_KeyImageCacheForWalletWith = function(public_address) {
|
|
var cacheId = _managedKeyImageCacheWalletIdForWalletWith(public_address);
|
|
var cache = __global_managed_keyImageCaches_by_walletId[cacheId];
|
|
if (typeof cache === "undefined" || !cache) {
|
|
cache = {};
|
|
__global_managed_keyImageCaches_by_walletId[cacheId] = cache;
|
|
}
|
|
return cache;
|
|
};
|
|
exports.Lazy_KeyImageCacheForWalletWith = Lazy_KeyImageCacheForWalletWith;
|
|
//
|
|
const DeleteManagedKeyImagesForWalletWith = function(public_address) {
|
|
// IMPORTANT: Ensure you call this method when you want to clear your wallet from
|
|
// memory or delete it, or else you could leak key images and public addresses.
|
|
const cacheId = _managedKeyImageCacheWalletIdForWalletWith(public_address);
|
|
delete __global_managed_keyImageCaches_by_walletId[cacheId];
|
|
//
|
|
const cache = __global_managed_keyImageCaches_by_walletId[cacheId];
|
|
if (typeof cache !== "undefined") {
|
|
throw "Key image cache still exists after deletion";
|
|
}
|
|
};
|
|
exports.DeleteManagedKeyImagesForWalletWith = DeleteManagedKeyImagesForWalletWith;
|