146 lines
3.6 KiB
TypeScript
146 lines
3.6 KiB
TypeScript
/*
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This file is part of GNU Taler
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(C) 2019 GNUnet e.V.
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GNU 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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GNU 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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GNU Taler; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
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*/
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import { generateFakeSegwitAddress } from "./index.js";
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import { URLSearchParams } from "./url.js";
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export type PaytoUri = PaytoUriUnknown | PaytoUriIBAN | PaytoUriTalerBank | PaytoUriBitcoin;
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interface PaytoUriGeneric {
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targetType: string;
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targetPath: string;
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params: { [name: string]: string };
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}
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interface PaytoUriUnknown extends PaytoUriGeneric {
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isKnown: false;
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}
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interface PaytoUriIBAN extends PaytoUriGeneric {
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isKnown: true;
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targetType: 'iban',
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iban: string;
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}
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interface PaytoUriTalerBank extends PaytoUriGeneric {
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isKnown: true;
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targetType: 'x-taler-bank',
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host: string;
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account: string;
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}
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interface PaytoUriBitcoin extends PaytoUriGeneric {
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isKnown: true;
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targetType: 'bitcoin',
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generateSegwitAddress: (r: string) => { addr1: string, addr2: string };
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addr1?: string, addr2?: string,
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}
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const paytoPfx = "payto://";
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/**
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* Add query parameters to a payto URI
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*/
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export function addPaytoQueryParams(
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s: string,
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params: { [name: string]: string },
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): string {
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const [acct, search] = s.slice(paytoPfx.length).split("?");
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const searchParams = new URLSearchParams(search || "");
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for (const k of Object.keys(params)) {
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searchParams.set(k, params[k]);
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}
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return paytoPfx + acct + "?" + searchParams.toString();
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}
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export function parsePaytoUri(s: string): PaytoUri | undefined {
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if (!s.startsWith(paytoPfx)) {
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return undefined;
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}
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const [acct, search] = s.slice(paytoPfx.length).split("?");
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const firstSlashPos = acct.indexOf("/");
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if (firstSlashPos === -1) {
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return undefined;
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}
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const targetType = acct.slice(0, firstSlashPos);
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const targetPath = acct.slice(firstSlashPos + 1);
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const params: { [k: string]: string } = {};
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const searchParams = new URLSearchParams(search || "");
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searchParams.forEach((v, k) => {
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params[v] = k;
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});
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if (targetType === 'x-taler-bank') {
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const parts = targetPath.split('/')
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const host = parts[0]
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const account = parts[1]
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return {
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targetPath,
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targetType,
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params,
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isKnown: true,
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host, account,
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};
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}
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if (targetType === 'iban') {
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return {
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isKnown: true,
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targetPath,
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targetType,
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params,
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iban: targetPath
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};
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}
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if (targetType === 'bitcoin') {
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const result: PaytoUriBitcoin = {
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isKnown: true,
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targetPath,
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targetType,
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params,
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generateSegwitAddress: (): any => null
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}
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//generate segwit address just once, save addr in payto object
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//and use it as cache
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function generateSegwitAddress(reserve: string) {
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if (result.addr1 && result.addr2) return { addr1: result.addr1, addr2: result.addr2 };
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const { addr1, addr2 } = generateFakeSegwitAddress(reserve, targetPath)
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result.addr1 = addr1
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result.addr2 = addr2
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return { addr1, addr2 }
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}
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result.generateSegwitAddress = generateSegwitAddress
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return result;
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}
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return {
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targetPath,
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targetType,
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params,
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isKnown: false
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};
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}
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