wallet-core/content_scripts/notify.js

/*
 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 <http://www.gnu.org/licenses/>
 */
/// <reference path="../lib/decl/chrome/chrome.d.ts" />
"use strict";
/**
 * Script that is injected into (all!) pages to allow them
 * to interact with the GNU Taler wallet via DOM Events.
 */
// Make sure we don't pollute the namespace too much.
var TalerNotify;
(function (TalerNotify) {
    var PROTOCOL_VERSION = 1;
    console.log("Taler injected");
    function subst(url, H_contract) {
        url = url.replace("${H_contract}", H_contract);
        url = url.replace("${$}", "$");
        return url;
    }
    var $ = function (x) { return document.getElementById(x); };
    document.addEventListener("taler-probe", function (e) {
        var evt = new CustomEvent("taler-wallet-present", {
            detail: {
                walletProtocolVersion: PROTOCOL_VERSION
            }
        });
        document.dispatchEvent(evt);
        console.log("handshake done");
    });
    document.addEventListener("taler-create-reserve", function (e) {
        console.log("taler-create-reserve with " + JSON.stringify(e.detail));
        var params = {
            amount: JSON.stringify(e.detail.amount),
            callback_url: URI(e.detail.callback_url).absoluteTo(document.location.href),
            bank_url: document.location.href,
        };
        var uri = URI(chrome.extension.getURL("pages/confirm-create-reserve.html"));
        document.location.href = uri.query(params).href();
    });
    document.addEventListener("taler-confirm-reserve", function (e) {
        console.log("taler-confirm-reserve with " + JSON.stringify(e.detail));
        var msg = {
            type: "confirm-reserve",
            detail: {
                reservePub: e.detail.reserve_pub
            }
        };
        chrome.runtime.sendMessage(msg, function (resp) {
            console.log("confirm reserve done");
        });
    });
    document.addEventListener("taler-contract", function (e) {
        // XXX: the merchant should just give us the parsed data ...
        var offer = JSON.parse(e.detail);
        if (!offer.contract) {
            console.error("contract field missing");
            return;
        }
        var msg = {
            type: "check-repurchase",
            detail: {
                contract: offer.contract
            },
        };
        chrome.runtime.sendMessage(msg, function (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 {
                var uri = URI(chrome.extension.getURL("pages/confirm-contract.html"));
                var params = {
                    offer: JSON.stringify(offer),
                    merchantPageUrl: document.location.href,
                };
                document.location.href = uri.query(params).href();
            }
        });
    });
    document.addEventListener('taler-execute-payment', function (e) {
        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;
        }
        var payUrl = e.detail.pay_url;
        var msg = {
            type: "execute-payment",
            detail: {
                H_contract: e.detail.H_contract,
            },
        };
        chrome.runtime.sendMessage(msg, function (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;
            }
            var contract = resp.contract;
            if (!contract) {
                throw Error("contract missing");
            }
            console.log("Making request to ", payUrl);
            var r = new XMLHttpRequest();
            r.open('post', payUrl);
            r.send(JSON.stringify(resp.payReq));
            r.onload = function () {
                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;
                }
            };
        });
    });
})(TalerNotify || (TalerNotify = {}));
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