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/*
This file is part of TALER
Copyright (C) 2014, 2015 Christian Grothoff (and other contributing authors)
TALER is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 3, or (at your option) any later version.
TALER is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
*/
"use strict";
// Size of a native pointer.
const PTR_SIZE = 4;
let getEmsc = Module.cwrap;
var emsc = {
free: (ptr) => Module._free(ptr),
get_value: getEmsc('TALER_WR_get_value', 'number', ['number']),
get_fraction: getEmsc('TALER_WR_get_fraction', 'number', ['number']),
get_currency: getEmsc('TALER_WR_get_currency', 'string', ['number']),
amount_add: getEmsc('TALER_amount_add', 'void', ['number', 'number', 'number']),
amount_subtract: getEmsc('TALER_amount_subtract', 'void', ['number', 'number', 'number']),
amount_normalize: getEmsc('TALER_amount_normalize', 'void', ['number']),
amount_cmp: getEmsc('TALER_amount_cmp', 'number', ['number', 'number'])
};
var emscAlloc = {
get_amount: getEmsc('TALER_WRALL_get_amount', 'number', ['number', 'number', 'number', 'string']),
eddsa_key_create: getEmsc('GNUNET_CRYPTO_eddsa_key_create', 'number'),
eddsa_public_key_from_private: getEmsc('TALER_WRALL_eddsa_public_key_from_private', 'number', ['number']),
data_to_string_alloc: getEmsc('GNUNET_STRINGS_data_to_string_alloc', 'number', ['number', 'number']),
malloc: (size) => Module._malloc(size),
};
class ArenaObject {
constructor(arena) {
this.nativePtr = 0;
if (!arena)
arena = defaultArena;
arena.put(this);
this.arena = arena;
}
}
class Arena {
constructor() {
this.heap = [];
}
put(obj) {
this.heap.push(obj);
}
destroy(obj) {
// XXX: todo
}
}
// Arena to track allocations that do not use an explicit arena.
var defaultArena = new Arena();
class Amount extends ArenaObject {
constructor(args, arena) {
super(arena);
if (args) {
this.nativePtr = emscAlloc.get_amount(args.value, 0, args.fraction, args.currency);
}
else {
this.nativePtr = emscAlloc.get_amount(0, 0, 0, "");
}
}
destroy() {
if (this.nativePtr != 0) {
emsc.free(this.nativePtr);
}
}
get value() {
return emsc.get_value(this.nativePtr);
}
get fraction() {
return emsc.get_fraction(this.nativePtr);
}
get currency() {
return emsc.get_currency(this.nativePtr);
}
toJson() {
return {
value: emsc.get_value(this.nativePtr),
fraction: emsc.get_fraction(this.nativePtr),
currency: emsc.get_currency(this.nativePtr)
};
}
/**
* Add an amount to this amount.
*/
add(a) {
let res = emsc.amount_add(this.nativePtr, a.nativePtr, this.nativePtr);
if (res < 1) {
// Overflow
return false;
}
return true;
}
/**
* Perform saturating subtraction on amounts.
*/
sub(a) {
let res = emsc.amount_subtract(this.nativePtr, a.nativePtr, this.nativePtr);
if (res == 0) {
// Underflow
return false;
}
if (res > 0) {
return true;
}
throw "Incompatible currencies";
}
cmp(a) {
return emsc.amount_cmp(this.nativePtr, a.nativePtr);
}
normalize() {
emsc.amount_normalize(this.nativePtr);
}
}
class SizedArenaObject extends ArenaObject {
encode() {
var d = emscAlloc.data_to_string_alloc(this.nativePtr, this.size);
var s = Module.Pointer_stringify(d);
emsc.free(d);
return s;
}
}
class EddsaPrivateKey extends SizedArenaObject {
static create(a) {
let k = new EddsaPrivateKey(a);
k.nativePtr = emscAlloc.eddsa_key_create();
return k;
}
get size() {
return 32;
}
destroy() {
// TODO
}
getPublicKey() {
let pk = new EddsaPublicKey(this.arena);
pk.nativePtr = emscAlloc.eddsa_public_key_from_private(this.nativePtr);
return pk;
}
}
class EddsaPublicKey extends SizedArenaObject {
destroy() {
// TODO
}
get size() {
return 32;
}
}
class RsaBlindingKey extends ArenaObject {
destroy() {
// TODO
}
}
class HashCode extends ArenaObject {
destroy() {
// TODO
}
}
class ByteArray extends ArenaObject {
destroy() {
// TODO
}
}
class RsaPublicKey extends ArenaObject {
destroy() {
// TODO
}
}
function rsaBlind(hashCode, blindingKey, pkey, arena) {
return null;
}
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