672 lines
18 KiB
TypeScript
672 lines
18 KiB
TypeScript
/*
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This file is part of TALER
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Copyright (C) 2014, 2015 Christian Grothoff (and other contributing authors)
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TALER is free software; you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the Free Software
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Foundation; either version 3, or (at your option) any later version.
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TALER is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
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*/
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"use strict";
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declare var Module : any;
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// Size of a native pointer.
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const PTR_SIZE = 4;
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const GNUNET_OK = 1;
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const GNUNET_YES = 1;
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const GNUNET_NO = 0;
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const GNUNET_SYSERR = -1;
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interface EmscFunGen {
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(name: string, ret: string, args: string[]): ((...x: (number|string)[]) => any);
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(name: string, ret: 'number', args: string[]): ((...x: (number|string)[]) => number);
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(name: string, ret: 'void', args: string[]): ((...x: (number|string)[]) => void);
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(name: string, ret: 'string', args: string[]): ((...x: (number|string)[]) => string);
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}
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let getEmsc: EmscFunGen = (...args) => Module.cwrap.apply(null, args);
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var emsc = {
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free: (ptr) => Module._free(ptr),
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get_value: getEmsc('TALER_WR_get_value',
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'number',
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['number']),
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get_fraction: getEmsc('TALER_WR_get_fraction',
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'number',
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['number']),
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get_currency: getEmsc('TALER_WR_get_currency',
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'string',
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['number']),
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amount_add: getEmsc('TALER_amount_add',
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'number',
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['number', 'number', 'number']),
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amount_subtract: getEmsc('TALER_amount_subtract',
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'number',
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['number', 'number', 'number']),
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amount_normalize: getEmsc('TALER_amount_normalize',
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'void',
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['number']),
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amount_cmp: getEmsc('TALER_amount_cmp',
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'number',
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['number', 'number']),
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amount_hton: getEmsc('TALER_amount_hton',
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'void',
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['number', 'number']),
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amount_ntoh: getEmsc('TALER_amount_ntoh',
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'void',
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['number', 'number']),
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hash: getEmsc('GNUNET_CRYPTO_hash',
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'void',
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['number', 'number', 'number']),
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memmove: getEmsc('memmove',
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'number',
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['number', 'number', 'number']),
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rsa_public_key_free: getEmsc('GNUNET_CRYPTO_rsa_public_key_free',
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'void',
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['number']),
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rsa_signature_free: getEmsc('GNUNET_CRYPTO_rsa_signature_free',
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'void',
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['number']),
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string_to_data: getEmsc('GNUNET_STRINGS_string_to_data',
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'number',
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['number', 'number', 'number', 'number']),
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eddsa_sign: getEmsc('GNUNET_CRYPTO_eddsa_sign',
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'number',
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['number', 'number', 'number']),
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hash_create_random: getEmsc('GNUNET_CRYPTO_hash_create_random',
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'void',
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['number', 'number']),
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rsa_blinding_key_destroy: getEmsc('GNUNET_CRYPTO_rsa_blinding_key_free',
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'void',
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['number']),
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};
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var emscAlloc = {
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get_amount: getEmsc('TALER_WRALL_get_amount',
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'number',
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['number', 'number', 'number', 'string']),
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eddsa_key_create: getEmsc('GNUNET_CRYPTO_eddsa_key_create',
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'number', []),
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eddsa_public_key_from_private: getEmsc('TALER_WRALL_eddsa_public_key_from_private',
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'number',
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['number']),
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data_to_string_alloc: getEmsc('GNUNET_STRINGS_data_to_string_alloc',
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'number',
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['number', 'number']),
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purpose_create: getEmsc('TALER_WRALL_purpose_create',
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'number',
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['number', 'number', 'number']),
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rsa_blind: getEmsc('GNUNET_CRYPTO_rsa_blind',
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'number',
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['number', 'number', 'number', 'number']),
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rsa_blinding_key_create: getEmsc('GNUNET_CRYPTO_rsa_blinding_key_create',
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'number',
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['number']),
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rsa_blinding_key_encode: getEmsc('GNUNET_CRYPTO_rsa_blinding_key_encode',
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'number',
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['number', 'number']),
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rsa_signature_encode: getEmsc('GNUNET_CRYPTO_rsa_signature_encode',
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'number',
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['number', 'number']),
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rsa_blinding_key_decode: getEmsc('GNUNET_CRYPTO_rsa_blinding_key_decode',
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'number',
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['number', 'number']),
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rsa_public_key_decode: getEmsc('GNUNET_CRYPTO_rsa_public_key_decode',
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'number',
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['number', 'number']),
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rsa_signature_decode: getEmsc('GNUNET_CRYPTO_rsa_signature_decode',
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'number',
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['number', 'number']),
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rsa_public_key_encode: getEmsc('GNUNET_CRYPTO_rsa_public_key_encode',
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'number',
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['number', 'number']),
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rsa_unblind: getEmsc('GNUNET_CRYPTO_rsa_unblind',
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'number',
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['number', 'number', 'number']),
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malloc: (size: number) => Module._malloc(size),
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};
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enum SignaturePurpose {
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RESERVE_WITHDRAW = 1200
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}
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enum RandomQuality {
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WEAK = 0,
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STRONG = 1,
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NONCE = 2
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}
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abstract class ArenaObject {
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private _nativePtr: number;
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arena: Arena;
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abstract destroy(): void;
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constructor(arena?: Arena) {
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this.nativePtr = null;
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if (!arena) {
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if (arenaStack.length == 0) {
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throw Error("No arena available")
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}
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arena = arenaStack[arenaStack.length - 1];
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}
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arena.put(this);
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this.arena = arena;
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}
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getNative(): number {
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// We want to allow latent allocation
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// of native wrappers, but we never want to
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// pass 'undefined' to emscripten.
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if (this._nativePtr === undefined) {
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throw Error("Native pointer not initialized");
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}
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return this._nativePtr;
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}
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free() {
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if (this.nativePtr !== undefined) {
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emsc.free(this.nativePtr);
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this.nativePtr = undefined;
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}
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}
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alloc(size: number) {
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if (this.nativePtr !== undefined) {
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throw Error("Double allocation");
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}
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this.nativePtr = emscAlloc.malloc(size);
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}
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setNative(n: number) {
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if (n === undefined) {
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throw Error("Native pointer must be a number or null");
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}
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this._nativePtr = n;
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}
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set nativePtr (v) {
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this.setNative(v);
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}
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get nativePtr () {
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return this.getNative();
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}
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}
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interface Arena {
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put(obj: ArenaObject): void;
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destroy(): void;
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}
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class DefaultArena implements Arena {
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heap: Array<ArenaObject>;
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constructor() {
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this.heap = [];
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}
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put(obj) {
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this.heap.push(obj);
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}
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destroy() {
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for (let obj of this.heap) {
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obj.destroy();
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}
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this.heap = []
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}
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}
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/**
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* Arena that destroys all its objects once control has returned to the message
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* loop and a small interval has passed.
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*/
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class SyncArena extends DefaultArena {
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timer: Worker;
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constructor() {
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super();
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let me = this;
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this.timer = new Worker('background/timerThread.js');
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this.timer.onmessage = (e) => {
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this.destroy();
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};
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//this.timer.postMessage({interval: 50});
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}
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destroy() {
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super.destroy();
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}
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}
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let arenaStack: Arena[] = [];
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arenaStack.push(new SyncArena());
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class Amount extends ArenaObject {
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constructor(args?: any, arena?: Arena) {
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super(arena);
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if (args) {
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this.nativePtr = emscAlloc.get_amount(args.value, 0, args.fraction, args.currency);
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} else {
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this.nativePtr = emscAlloc.get_amount(0, 0, 0, "");
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}
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}
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destroy() {
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if (this.nativePtr != 0) {
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emsc.free(this.nativePtr);
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}
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}
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toNbo(a?: Arena): AmountNbo {
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let x = new AmountNbo(a);
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x.alloc();
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emsc.amount_hton(x.nativePtr, this.nativePtr);
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return x;
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}
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fromNbo(nbo: AmountNbo): void {
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emsc.amount_ntoh(this.nativePtr, nbo.nativePtr);
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}
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get value() {
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return emsc.get_value(this.nativePtr);
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}
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get fraction() {
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return emsc.get_fraction(this.nativePtr);
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}
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get currency() {
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return emsc.get_currency(this.nativePtr);
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}
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toJson() {
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return {
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value: emsc.get_value(this.nativePtr),
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fraction: emsc.get_fraction(this.nativePtr),
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currency: emsc.get_currency(this.nativePtr)
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};
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}
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/**
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* Add an amount to this amount.
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*/
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add(a) {
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let res = emsc.amount_add(this.nativePtr, a.nativePtr, this.nativePtr);
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if (res < 1) {
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// Overflow
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return false;
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}
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return true;
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}
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/**
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* Perform saturating subtraction on amounts.
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*/
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sub(a) {
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// this = this - a
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let res = emsc.amount_subtract(this.nativePtr, this.nativePtr, a.nativePtr);
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if (res == 0) {
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// Underflow
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return false;
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}
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if (res > 0) {
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return true;
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}
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throw Error("Incompatible currencies");
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}
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cmp(a) {
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return emsc.amount_cmp(this.nativePtr, a.nativePtr);
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}
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normalize() {
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emsc.amount_normalize(this.nativePtr);
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}
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}
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abstract class PackedArenaObject extends ArenaObject {
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abstract size(): number;
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constructor(a?: Arena) {
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super(a);
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}
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toCrock(): string {
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var d = emscAlloc.data_to_string_alloc(this.nativePtr, this.size());
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var s = Module.Pointer_stringify(d);
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emsc.free(d);
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return s;
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}
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loadCrock(s: string) {
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this.alloc();
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// We need to get the javascript string
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// to the emscripten heap first.
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let buf = ByteArray.fromString(s);
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let res = emsc.string_to_data(buf.nativePtr, s.length, this.nativePtr, this.size());
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buf.destroy();
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if (res < 1) {
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throw {error: "wrong encoding"};
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}
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}
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alloc() {
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if (this.nativePtr === null) {
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this.nativePtr = emscAlloc.malloc(this.size());
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}
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}
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destroy() {
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emsc.free(this.nativePtr);
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this.nativePtr = 0;
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}
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hash(): HashCode {
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var x = new HashCode();
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x.alloc();
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emsc.hash(this.nativePtr, this.size(), x.nativePtr);
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return x;
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}
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}
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class AmountNbo extends PackedArenaObject {
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size() { return 24; }
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}
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class EddsaPrivateKey extends PackedArenaObject {
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static create(a?: Arena): EddsaPrivateKey {
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let obj = new EddsaPrivateKey(a);
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obj.nativePtr = emscAlloc.eddsa_key_create();
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return obj;
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}
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size() { return 32; }
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getPublicKey(a?: Arena): EddsaPublicKey {
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let obj = new EddsaPublicKey(a);
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obj.nativePtr = emscAlloc.eddsa_public_key_from_private(this.nativePtr);
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return obj;
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}
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}
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class EddsaPublicKey extends PackedArenaObject {
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size() { return 32; }
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}
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class RsaBlindingKey extends ArenaObject {
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static create(len: number, a?: Arena) {
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let o = new RsaBlindingKey(a);
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o.nativePtr = emscAlloc.rsa_blinding_key_create(len);
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return o;
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}
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toCrock(): string {
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let ptr = emscAlloc.malloc(PTR_SIZE);
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let size = emscAlloc.rsa_blinding_key_encode(this.nativePtr, ptr);
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let res = new ByteArray(size, Module.getValue(ptr, '*'));
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let s = res.toCrock();
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emsc.free(ptr);
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res.destroy();
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return s;
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}
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destroy() {
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// TODO
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}
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}
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class HashCode extends PackedArenaObject {
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size() { return 64; }
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random(qualStr: string) {
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let qual: RandomQuality;
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switch (qualStr) {
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case "weak":
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qual = RandomQuality.WEAK;
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break;
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case "strong":
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case null:
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case undefined:
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qual = RandomQuality.STRONG;
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break;
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case "nonce":
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qual = RandomQuality.NONCE;
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break;
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break;
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default:
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throw Error(format("unknown crypto quality: {0}", qual));
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}
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this.alloc();
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emsc.hash_create_random(qual, this.nativePtr);
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}
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}
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class ByteArray extends PackedArenaObject {
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private allocatedSize: number;
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size() { return this.allocatedSize; }
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constructor(desiredSize: number, init: number, a?: Arena) {
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super(a);
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if (init === undefined || init === null) {
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this.nativePtr = emscAlloc.malloc(desiredSize);
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} else {
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this.nativePtr = init;
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}
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this.allocatedSize = desiredSize;
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}
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static fromString(s: string, a?: Arena): ByteArray {
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let hstr = emscAlloc.malloc(s.length + 1);
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Module.writeStringToMemory(s, hstr);
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return new ByteArray(s.length, hstr, a);
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}
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static fromCrock(s: string, a?: Arena): ByteArray {
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let hstr = emscAlloc.malloc(s.length + 1);
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Module.writeStringToMemory(s, hstr);
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let decodedLen = Math.floor((s.length * 5) / 8);
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let ba = new ByteArray(decodedLen, null, a);
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let res = emsc.string_to_data(hstr, s.length, ba.nativePtr, decodedLen);
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emsc.free(hstr);
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if (res != GNUNET_OK) {
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throw Error("decoding failed");
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}
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return ba;
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}
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}
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class EccSignaturePurpose extends PackedArenaObject {
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size() { return this.payloadSize + 8; }
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payloadSize: number;
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constructor(purpose: SignaturePurpose, payload: PackedArenaObject, a?: Arena) {
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super(a);
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this.nativePtr = emscAlloc.purpose_create(purpose, payload.nativePtr, payload.size());
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this.payloadSize = payload.size();
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}
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}
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abstract class SignatureStruct {
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abstract fieldTypes(): Array<any>;
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abstract purpose(): SignaturePurpose;
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private members: any = {};
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toPurpose(a?: Arena): EccSignaturePurpose {
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let totalSize = 0;
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for (let f of this.fieldTypes()) {
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let name = f[0];
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let member = this.members[name];
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if (!member) {
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throw Error(format("Member {0} not set", name));
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}
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totalSize += member.size();
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}
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let buf = emscAlloc.malloc(totalSize);
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let ptr = buf;
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for (let f of this.fieldTypes()) {
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let name = f[0];
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let member = this.members[name];
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let size = member.size();
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emsc.memmove(ptr, member.nativePtr, size);
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ptr += size;
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}
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let ba = new ByteArray(totalSize, buf, a);
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let x = new EccSignaturePurpose(this.purpose(), ba);
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return x;
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}
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set(name: string, value: PackedArenaObject) {
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let typemap: any = {}
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for (let f of this.fieldTypes()) {
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typemap[f[0]] = f[1];
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}
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if (!(name in typemap)) {
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throw Error(format("Key {0} not found", name));
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}
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if (!(value instanceof typemap[name])) {
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throw Error(format("Wrong type for {0}", name));
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}
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this.members[name] = value;
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}
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}
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class WithdrawRequestPS extends SignatureStruct {
|
|
purpose() { return SignaturePurpose.RESERVE_WITHDRAW; }
|
|
fieldTypes() {
|
|
return [
|
|
["reserve_pub", EddsaPublicKey],
|
|
["amount_with_fee", AmountNbo],
|
|
["withdraw_fee", AmountNbo],
|
|
["h_denomination_pub", HashCode],
|
|
["h_coin_envelope", HashCode]];
|
|
}
|
|
}
|
|
|
|
|
|
|
|
function encodeWith(obj, fn, arena?: Arena) {
|
|
let ptr = emscAlloc.malloc(PTR_SIZE);
|
|
let len = fn(obj.getNative(), ptr);
|
|
let res = new ByteArray(len, null, arena);
|
|
res.setNative(Module.getValue(ptr, '*'));
|
|
emsc.free(ptr);
|
|
return res;
|
|
}
|
|
|
|
|
|
class RsaPublicKey extends ArenaObject {
|
|
static fromCrock(s: string, a?: Arena): RsaPublicKey {
|
|
let obj = new RsaPublicKey(a);
|
|
let buf = ByteArray.fromCrock(s);
|
|
obj.nativePtr = emscAlloc.rsa_public_key_decode(buf.nativePtr, buf.size());
|
|
buf.destroy();
|
|
return obj;
|
|
}
|
|
|
|
toCrock() {
|
|
return this.encode().toCrock();
|
|
}
|
|
|
|
destroy() {
|
|
emsc.rsa_public_key_free(this.nativePtr);
|
|
this.nativePtr = 0;
|
|
}
|
|
|
|
encode(arena?: Arena): ByteArray {
|
|
let ptr = emscAlloc.malloc(PTR_SIZE);
|
|
let len = emscAlloc.rsa_public_key_encode(this.nativePtr, ptr);
|
|
let res = new ByteArray(len, Module.getValue(ptr, '*'), arena);
|
|
emsc.free(ptr);
|
|
return res;
|
|
}
|
|
|
|
}
|
|
|
|
|
|
class EddsaSignature extends PackedArenaObject {
|
|
size() { return 64; }
|
|
}
|
|
|
|
|
|
class RsaSignature extends ArenaObject {
|
|
static fromCrock(s: string, a?: Arena): RsaSignature {
|
|
let obj = new this(a);
|
|
let buf = ByteArray.fromCrock(s);
|
|
obj.setNative(emscAlloc.rsa_signature_decode(buf.getNative(), buf.size()));
|
|
buf.destroy();
|
|
return obj;
|
|
}
|
|
|
|
encode(arena?: Arena): ByteArray {
|
|
return encodeWith(this, emscAlloc.rsa_signature_encode);
|
|
}
|
|
|
|
destroy() {
|
|
emsc.rsa_signature_free(this.getNative());
|
|
this.setNative(0);
|
|
}
|
|
}
|
|
|
|
function rsaBlind(hashCode: HashCode,
|
|
blindingKey: RsaBlindingKey,
|
|
pkey: RsaPublicKey,
|
|
arena?: Arena): ByteArray
|
|
{
|
|
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: EccSignaturePurpose,
|
|
priv: EddsaPrivateKey,
|
|
a?: Arena): EddsaSignature
|
|
{
|
|
let sig = new EddsaSignature(a);
|
|
sig.alloc();
|
|
let res = emsc.eddsa_sign(priv.nativePtr, purpose.nativePtr, sig.nativePtr);
|
|
if (res < 1) {
|
|
throw Error("EdDSA signing failed");
|
|
}
|
|
return sig;
|
|
}
|
|
|
|
function rsaUnblind(sig: RsaSignature,
|
|
bk: RsaBlindingKey,
|
|
pk: RsaPublicKey,
|
|
a?: Arena): RsaSignature {
|
|
let x = new RsaSignature(a);
|
|
x.nativePtr = emscAlloc.rsa_unblind(sig.nativePtr, bk.nativePtr, pk.nativePtr);
|
|
return x;
|
|
}
|
|
|
|
|