/* This file is part of TALER (C) 2015 GNUnet e.V. 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, If not, see */ /** * Script that is injected into (all!) pages to allow them * to interact with the GNU Taler wallet via DOM Events. * * @author Florian Dold */ /// "use strict"; // Make sure we don't pollute the namespace too much. namespace TalerNotify { const PROTOCOL_VERSION = 1; console.log("Taler injected", chrome.runtime.id); // FIXME: only do this for test wallets? // This is no security risk, since the extension ID for published // extension is publicly known. function subst(url: string, H_contract) { url = url.replace("${H_contract}", H_contract); url = url.replace("${$}", "$"); return url; } let $ = (x) => document.getElementById(x); document.addEventListener("DOMContentLoaded", function(e) { if (document.documentElement.getAttribute("data-taler-requested")) { console.log("taler requested in html element"); document.documentElement.setAttribute("data-taler-extension-id", chrome.runtime.id); } }); document.addEventListener("taler-probe", function(e) { let evt = new CustomEvent("taler-wallet-present", { detail: { walletProtocolVersion: PROTOCOL_VERSION } }); document.dispatchEvent(evt); console.log("handshake done"); }); document.addEventListener("taler-create-reserve", function(e: CustomEvent) { console.log("taler-create-reserve with " + JSON.stringify(e.detail)); let params = { amount: JSON.stringify(e.detail.amount), callback_url: URI(e.detail.callback_url) .absoluteTo(document.location.href), bank_url: document.location.href, }; let uri = URI(chrome.extension.getURL("pages/confirm-create-reserve.html")); document.location.href = uri.query(params).href(); }); document.addEventListener("taler-confirm-reserve", function(e: CustomEvent) { console.log("taler-confirm-reserve with " + JSON.stringify(e.detail)); let msg = { type: "confirm-reserve", detail: { reservePub: e.detail.reserve_pub } }; chrome.runtime.sendMessage(msg, (resp) => { console.log("confirm reserve done"); }); }); // XXX: remove in a bit, just here for compatibility ... document.addEventListener("taler-contract", function(e: CustomEvent) { // XXX: the merchant should just give us the parsed data ... let offer = JSON.parse(e.detail); if (!offer.contract) { console.error("contract field missing"); return; } let msg = { type: "check-repurchase", detail: { contract: offer.contract }, }; chrome.runtime.sendMessage(msg, (resp) => { if (resp.error) { console.error("wallet backend error", resp); return; } if (resp.isRepurchase) { console.log("doing repurchase"); console.assert(resp.existingFulfillmentUrl); console.assert(resp.existingContractHash); window.location.href = subst(resp.existingFulfillmentUrl, resp.existingContractHash); } else { let uri = URI(chrome.extension.getURL("pages/confirm-contract.html")); let params = { offer: JSON.stringify(offer), merchantPageUrl: document.location.href, }; document.location.href = uri.query(params).href(); } }); }); document.addEventListener("taler-confirm-contract", function(e: CustomEvent) { if (!e.detail.contract_wrapper) { console.error("contract wrapper missing"); return; } let offer = e.detail.contract_wrapper; if (!offer.contract) { console.error("contract field missing"); return; } let msg = { type: "check-repurchase", detail: { contract: offer.contract }, }; chrome.runtime.sendMessage(msg, (resp) => { if (resp.error) { console.error("wallet backend error", resp); return; } if (resp.isRepurchase) { console.log("doing repurchase"); console.assert(resp.existingFulfillmentUrl); console.assert(resp.existingContractHash); window.location.href = subst(resp.existingFulfillmentUrl, resp.existingContractHash); } else { let uri = URI(chrome.extension.getURL("pages/confirm-contract.html")); let params = { offer: JSON.stringify(offer), merchantPageUrl: document.location.href, }; let target = uri.query(params).href(); if (e.detail.replace_navigation === true) { document.location.replace(target); } else { document.location.href = target; } } }); }); document.addEventListener('taler-execute-payment', function(e: CustomEvent) { console.log("got taler-execute-payment in content page"); if (!e.detail.pay_url) { console.log("field 'pay_url' missing in taler-execute-payment event"); return; } let payUrl = e.detail.pay_url; let msg = { type: "execute-payment", detail: { H_contract: e.detail.H_contract, }, }; chrome.runtime.sendMessage(msg, (resp) => { console.log("got resp"); console.dir(resp); if (!resp.success) { console.log("got event detial:"); console.dir(e.detail); if (e.detail.offering_url) { console.log("offering url", e.detail.offering_url); window.location.href = e.detail.offering_url; } else { console.error("execute-payment failed"); } return; } let contract = resp.contract; if (!contract) { throw Error("contract missing"); } console.log("Making request to ", payUrl); let r = new XMLHttpRequest(); r.open('post', payUrl); r.send(JSON.stringify(resp.payReq)); r.onload = () => { switch (r.status) { case 200: console.log("going to", contract.fulfillment_url); // TODO: Is this the right thing? Does the reload // TODO: override setting location.href? window.location.href = subst(contract.fulfillment_url, e.detail.H_contract); window.location.reload(true); break; default: console.log("Unexpected status code for $pay_url:", r.status); break; } }; }); }); }