327 lines
11 KiB
JavaScript
327 lines
11 KiB
JavaScript
/*
|
|
|
|
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']),
|
|
amount_hton: getEmsc('TALER_amount_hton', 'void', ['number', 'number']),
|
|
amount_ntoh: getEmsc('TALER_amount_ntoh', 'void', ['number', 'number']),
|
|
hash: getEmsc('GNUNET_CRYPTO_hash', 'void', ['number', 'number', 'number']),
|
|
memmove: getEmsc('memmove', 'number', ['number', 'number', 'number']),
|
|
rsa_public_key_free: getEmsc('GNUNET_CRYPTO_rsa_public_key_free', 'void', ['number']),
|
|
string_to_data: getEmsc('GNUNET_STRINGS_string_to_data', 'void', ['number', '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']),
|
|
purpose_create: getEmsc('TALER_WRALL_purpose_create', 'number', ['number', 'number', 'number']),
|
|
rsa_blind: getEmsc('GNUNET_CRYPTO_rsa_blind', 'number', ['number', 'number', 'number', 'number']),
|
|
rsa_blinding_key_create: getEmsc('GNUNET_CRYPTO_rsa_blinding_key_create', 'void', ['number']),
|
|
rsa_blinding_key_encode: getEmsc('GNUNET_CRYPTO_rsa_blinding_key_encode', 'void', ['number', 'number']),
|
|
rsa_blinding_key_decode: getEmsc('GNUNET_CRYPTO_rsa_blinding_key_decode', 'number', ['number', 'number']),
|
|
rsa_public_key_decode: getEmsc('GNUNET_CRYPTO_rsa_public_key_decode', 'number', ['number', 'number']),
|
|
malloc: (size) => Module._malloc(size),
|
|
};
|
|
var SignaturePurpose;
|
|
(function (SignaturePurpose) {
|
|
})(SignaturePurpose || (SignaturePurpose = {}));
|
|
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);
|
|
}
|
|
}
|
|
toNbo(a) {
|
|
let x = new AmountNbo(a);
|
|
x.alloc();
|
|
emsc.amount_hton(x.nativePtr, this.nativePtr);
|
|
return x;
|
|
}
|
|
fromNbo(nbo) {
|
|
emsc.amount_ntoh(this.nativePtr, nbo.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 PackedArenaObject extends ArenaObject {
|
|
constructor(a) {
|
|
super(a);
|
|
}
|
|
stringEncode() {
|
|
var d = emscAlloc.data_to_string_alloc(this.nativePtr, this.size());
|
|
var s = Module.Pointer_stringify(d);
|
|
emsc.free(d);
|
|
return s;
|
|
}
|
|
stringDecode(s) {
|
|
this.alloc();
|
|
// We need to get the javascript string
|
|
// to the emscripten heap first.
|
|
let buf = ByteArray.fromString(s);
|
|
let res = emsc.string_to_data(buf.nativePtr, s.length, this.nativePtr, this.size());
|
|
buf.destroy();
|
|
if (res < 1) {
|
|
throw { error: "wrong encoding" };
|
|
}
|
|
}
|
|
alloc() {
|
|
if (this.nativePtr === null) {
|
|
this.nativePtr = emscAlloc.malloc(this.size());
|
|
}
|
|
}
|
|
destroy() {
|
|
emsc.free(this.nativePtr);
|
|
this.nativePtr = 0;
|
|
}
|
|
hash() {
|
|
var x = new HashCode();
|
|
emsc.hash(this.nativePtr, this.size(), x.nativePtr);
|
|
return x;
|
|
}
|
|
}
|
|
class AmountNbo extends PackedArenaObject {
|
|
size() { return 24; }
|
|
}
|
|
class EddsaPrivateKey extends PackedArenaObject {
|
|
static create(a) {
|
|
let obj = new EddsaPrivateKey(a);
|
|
obj.nativePtr = emscAlloc.eddsa_key_create();
|
|
return obj;
|
|
}
|
|
size() { return 32; }
|
|
getPublicKey(a) {
|
|
let obj = new EddsaPublicKey(a);
|
|
obj.nativePtr = emscAlloc.eddsa_public_key_from_private(this.nativePtr);
|
|
return obj;
|
|
}
|
|
}
|
|
class EddsaPublicKey extends PackedArenaObject {
|
|
size() { return 32; }
|
|
}
|
|
class RsaBlindingKey extends ArenaObject {
|
|
static create(len, a) {
|
|
let o = new RsaBlindingKey(a);
|
|
o.nativePtr = emscAlloc.rsa_blinding_key_create(len);
|
|
return o;
|
|
}
|
|
stringEncode() {
|
|
let ptr = emscAlloc.malloc(PTR_SIZE);
|
|
let size = emscAlloc.rsa_blinding_key_encode(this.nativePtr, ptr);
|
|
let res = new ByteArray(size, Module.getValue(ptr, '*'));
|
|
let s = res.stringEncode();
|
|
emsc.free(ptr);
|
|
res.destroy();
|
|
return s;
|
|
}
|
|
destroy() {
|
|
// TODO
|
|
}
|
|
}
|
|
class HashCode extends PackedArenaObject {
|
|
size() { return 64; }
|
|
}
|
|
class ByteArray extends PackedArenaObject {
|
|
constructor(desiredSize, init, a) {
|
|
super(a);
|
|
if (init === undefined || init === null) {
|
|
this.nativePtr = emscAlloc.malloc(desiredSize);
|
|
}
|
|
else {
|
|
this.nativePtr = init;
|
|
}
|
|
this.allocatedSize = desiredSize;
|
|
}
|
|
size() { return this.allocatedSize; }
|
|
static fromString(s, a) {
|
|
let hstr = emscAlloc.malloc(s.length + 1);
|
|
Module.writeStringToMemory(s, hstr);
|
|
return new ByteArray(s.length, hstr, a);
|
|
}
|
|
}
|
|
class EccSignaturePurpose extends PackedArenaObject {
|
|
constructor(purpose, payload, a) {
|
|
super(a);
|
|
this.nativePtr = emscAlloc.purpose_create(purpose, payload.nativePtr, payload.size());
|
|
}
|
|
size() { return this.payload.size() + 8; }
|
|
}
|
|
class SignatureStruct {
|
|
constructor() {
|
|
this.members = {};
|
|
}
|
|
toPurpose(a) {
|
|
let totalSize = 0;
|
|
for (let f of this.fieldTypes()) {
|
|
let name = f[0];
|
|
let member = this.members[name];
|
|
if (!member) {
|
|
throw { error: "Member not set", key: name };
|
|
}
|
|
totalSize += this.members[name].size();
|
|
}
|
|
let buf = emscAlloc.malloc(totalSize);
|
|
let ptr = buf;
|
|
for (let f of this.fieldTypes()) {
|
|
let name = f[0];
|
|
let member = this.members[name];
|
|
let size = member.size();
|
|
emsc.memmove(ptr, member.nativePtr, size);
|
|
ptr += size;
|
|
}
|
|
let ba = new ByteArray(totalSize, buf, a);
|
|
let x = new EccSignaturePurpose(this.purpose(), ba, a);
|
|
return x;
|
|
}
|
|
set(name, value) {
|
|
let typemap = {};
|
|
for (let f of this.fieldTypes()) {
|
|
typemap[f[0]] = f[1];
|
|
}
|
|
if (!(name in typemap)) {
|
|
throw { error: "Key not found", key: name };
|
|
}
|
|
if (!(value instanceof typemap[name])) {
|
|
throw { error: "Wrong type", key: name };
|
|
}
|
|
// TODO: check type!
|
|
this.members[name] = value;
|
|
}
|
|
}
|
|
class WithdrawRequestPS extends SignatureStruct {
|
|
purpose() { return undefined; }
|
|
fieldTypes() {
|
|
return [
|
|
["reserve_pub", EddsaPublicKey],
|
|
["amount_with_fee", Amount],
|
|
["withdraw_fee", Amount],
|
|
["h_denomination_pub", HashCode],
|
|
["h_coin_envelope", HashCode]];
|
|
}
|
|
}
|
|
class RsaPublicKey extends ArenaObject {
|
|
static stringDecode(s, a) {
|
|
let obj = new RsaPublicKey(a);
|
|
let buf = ByteArray.fromString(s);
|
|
obj.nativePtr = emscAlloc.rsa_public_key_decode(buf.nativePtr, s.length);
|
|
buf.destroy();
|
|
return obj;
|
|
}
|
|
destroy() {
|
|
emsc.rsa_public_key_free(this.nativePtr);
|
|
this.nativePtr = 0;
|
|
}
|
|
}
|
|
class EddsaSignature extends PackedArenaObject {
|
|
size() { return 64; }
|
|
}
|
|
function rsaBlind(hashCode, blindingKey, pkey, arena) {
|
|
let ptr = emscAlloc.malloc(PTR_SIZE);
|
|
let s = emscAlloc.rsa_blind(hashCode.nativePtr, blindingKey.nativePtr, pkey.nativePtr, ptr);
|
|
let res = new ByteArray(s, Module.getValue(ptr, '*'), arena);
|
|
return res;
|
|
}
|
|
function eddsaSign(purpose, priv, a) {
|
|
throw "Not implemented";
|
|
}
|