restructuring

1 files changed, 325 insertions, 0 deletions

diff --git a/src/content_scripts/notify.js b/src/content_scripts/notify.js
new file mode 100644
index 000000000..74447386b
--- /dev/null
+++ b/src/content_scripts/notify.js
@@ -0,0 +1,325 @@
+/*
+ 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, see <http://www.gnu.org/licenses/>
+ */
+/**
+ * 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";
+var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
+    return new (P || (P = Promise))(function (resolve, reject) {
+        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
+        function rejected(value) { try { step(generator.throw(value)); } catch (e) { reject(e); } }
+        function step(result) { result.done ? resolve(result.value) : new P(function (resolve) { resolve(result.value); }).then(fulfilled, rejected); }
+        step((generator = generator.apply(thisArg, _arguments)).next());
+    });
+};
+// Make sure we don't pollute the namespace too much.
+var TalerNotify;
+(function (TalerNotify) {
+    const PROTOCOL_VERSION = 1;
+    let logVerbose = false;
+    try {
+        logVerbose = !!localStorage.getItem("taler-log-verbose");
+    }
+    catch (e) {
+    }
+    if (!taler) {
+        console.error("Taler wallet lib not included, HTTP 402 payments not" +
+            " supported");
+    }
+    function subst(url, H_contract) {
+        url = url.replace("${H_contract}", H_contract);
+        url = url.replace("${$}", "$");
+        return url;
+    }
+    const handlers = [];
+    function hashContract(contract) {
+        let walletHashContractMsg = {
+            type: "hash-contract",
+            detail: { contract }
+        };
+        return new Promise((resolve, reject) => {
+            chrome.runtime.sendMessage(walletHashContractMsg, (resp) => {
+                if (!resp.hash) {
+                    console.log("error", resp);
+                    reject(Error("hashing failed"));
+                }
+                resolve(resp.hash);
+            });
+        });
+    }
+    function checkRepurchase(contract) {
+        const walletMsg = {
+            type: "check-repurchase",
+            detail: {
+                contract: contract
+            },
+        };
+        return new Promise((resolve, reject) => {
+            chrome.runtime.sendMessage(walletMsg, (resp) => {
+                resolve(resp);
+            });
+        });
+    }
+    function putHistory(historyEntry) {
+        const walletMsg = {
+            type: "put-history-entry",
+            detail: {
+                historyEntry,
+            },
+        };
+        return new Promise((resolve, reject) => {
+            chrome.runtime.sendMessage(walletMsg, (resp) => {
+                resolve();
+            });
+        });
+    }
+    function saveOffer(offer) {
+        const walletMsg = {
+            type: "save-offer",
+            detail: {
+                offer: {
+                    contract: offer.contract,
+                    merchant_sig: offer.merchant_sig,
+                    H_contract: offer.H_contract,
+                    offer_time: new Date().getTime() / 1000
+                },
+            },
+        };
+        return new Promise((resolve, reject) => {
+            chrome.runtime.sendMessage(walletMsg, (resp) => {
+                resolve(resp);
+            });
+        });
+    }
+    function init() {
+        chrome.runtime.sendMessage({ type: "get-tab-cookie" }, (resp) => {
+            if (chrome.runtime.lastError) {
+                logVerbose && console.log("extension not yet ready");
+                window.setTimeout(init, 200);
+                return;
+            }
+            registerHandlers();
+            // Hack to know when the extension is unloaded
+            let port = chrome.runtime.connect();
+            port.onDisconnect.addListener(() => {
+                logVerbose && console.log("chrome runtime disconnected, removing handlers");
+                for (let handler of handlers) {
+                    document.removeEventListener(handler.type, handler.listener);
+                }
+            });
+            if (resp && resp.type === "fetch") {
+                logVerbose && console.log("it's fetch");
+                taler.internalOfferContractFrom(resp.contractUrl);
+                document.documentElement.style.visibility = "hidden";
+            }
+            else if (resp && resp.type === "execute") {
+                logVerbose && console.log("it's execute");
+                document.documentElement.style.visibility = "hidden";
+                taler.internalExecutePayment(resp.contractHash, resp.payUrl, resp.offerUrl);
+            }
+        });
+    }
+    logVerbose && console.log("loading Taler content script");
+    init();
+    function registerHandlers() {
+        /**
+         * Add a handler for a DOM event, which automatically
+         * handles adding sequence numbers to responses.
+         */
+        function addHandler(type, handler) {
+            let handlerWrap = (e) => {
+                if (e.type != type) {
+                    throw Error(`invariant violated`);
+                }
+                let callId = undefined;
+                if (e.detail && e.detail.callId != undefined) {
+                    callId = e.detail.callId;
+                }
+                let responder = (msg) => {
+                    let fullMsg = Object.assign({}, msg, { callId });
+                    let opts = { detail: fullMsg };
+                    if ("function" == typeof cloneInto) {
+                        opts = cloneInto(opts, document.defaultView);
+                    }
+                    let evt = new CustomEvent(type + "-result", opts);
+                    document.dispatchEvent(evt);
+                };
+                handler(e.detail, responder);
+            };
+            document.addEventListener(type, handlerWrap);
+            handlers.push({ type, listener: handlerWrap });
+        }
+        addHandler("taler-query-id", (msg, sendResponse) => {
+            // FIXME: maybe include this info in taoer-probe?
+            sendResponse({ id: chrome.runtime.id });
+        });
+        addHandler("taler-probe", (msg, sendResponse) => {
+            sendResponse();
+        });
+        addHandler("taler-create-reserve", (msg) => {
+            let params = {
+                amount: JSON.stringify(msg.amount),
+                callback_url: URI(msg.callback_url)
+                    .absoluteTo(document.location.href),
+                bank_url: document.location.href,
+                wt_types: JSON.stringify(msg.wt_types),
+            };
+            let uri = URI(chrome.extension.getURL("/src/pages/confirm-create-reserve.html"));
+            let redirectUrl = uri.query(params).href();
+            window.location.href = redirectUrl;
+        });
+        addHandler("taler-confirm-reserve", (msg, sendResponse) => {
+            let walletMsg = {
+                type: "confirm-reserve",
+                detail: {
+                    reservePub: msg.reserve_pub
+                }
+            };
+            chrome.runtime.sendMessage(walletMsg, (resp) => {
+                sendResponse();
+            });
+        });
+        addHandler("taler-confirm-contract", (msg) => __awaiter(this, void 0, void 0, function* () {
+            if (!msg.contract_wrapper) {
+                console.error("contract wrapper missing");
+                return;
+            }
+            const offer = msg.contract_wrapper;
+            if (!offer.contract) {
+                console.error("contract field missing");
+                return;
+            }
+            if (!offer.H_contract) {
+                console.error("H_contract field missing");
+                return;
+            }
+            let walletHashContractMsg = {
+                type: "hash-contract",
+                detail: { contract: offer.contract }
+            };
+            let contractHash = yield hashContract(offer.contract);
+            if (contractHash != offer.H_contract) {
+                console.error("merchant-supplied contract hash is wrong");
+                return;
+            }
+            let resp = yield checkRepurchase(offer.contract);
+            if (resp.error) {
+                console.error("wallet backend error", resp);
+                return;
+            }
+            if (resp.isRepurchase) {
+                logVerbose && console.log("doing repurchase");
+                console.assert(resp.existingFulfillmentUrl);
+                console.assert(resp.existingContractHash);
+                window.location.href = subst(resp.existingFulfillmentUrl, resp.existingContractHash);
+            }
+            else {
+                let merchantName = "(unknown)";
+                try {
+                    merchantName = offer.contract.merchant.name;
+                }
+                catch (e) {
+                }
+                let historyEntry = {
+                    timestamp: (new Date).getTime(),
+                    subjectId: `contract-${contractHash}`,
+                    type: "offer-contract",
+                    detail: {
+                        contractHash,
+                        merchantName,
+                    }
+                };
+                yield putHistory(historyEntry);
+                let offerId = yield saveOffer(offer);
+                const uri = URI(chrome.extension.getURL("/src/pages/confirm-contract.html"));
+                const params = {
+                    offerId: offerId.toString(),
+                };
+                const target = uri.query(params).href();
+                if (msg.replace_navigation === true) {
+                    document.location.replace(target);
+                }
+                else {
+                    document.location.href = target;
+                }
+            }
+        }));
+        addHandler("taler-payment-failed", (msg, sendResponse) => {
+            const walletMsg = {
+                type: "payment-failed",
+                detail: {
+                    contractHash: msg.H_contract
+                },
+            };
+            chrome.runtime.sendMessage(walletMsg, (resp) => {
+                sendResponse();
+            });
+        });
+        addHandler("taler-payment-succeeded", (msg, sendResponse) => {
+            if (!msg.H_contract) {
+                console.error("H_contract missing in taler-payment-succeeded");
+                return;
+            }
+            logVerbose && console.log("got taler-payment-succeeded");
+            const walletMsg = {
+                type: "payment-succeeded",
+                detail: {
+                    contractHash: msg.H_contract,
+                },
+            };
+            chrome.runtime.sendMessage(walletMsg, (resp) => {
+                sendResponse();
+            });
+        });
+        addHandler("taler-get-payment", (msg, sendResponse) => {
+            const walletMsg = {
+                type: "execute-payment",
+                detail: {
+                    H_contract: msg.H_contract,
+                },
+            };
+            chrome.runtime.sendMessage(walletMsg, (resp) => {
+                if (resp.rateLimitExceeded) {
+                    console.error("rate limit exceeded, check for redirect loops");
+                }
+                if (!resp.success) {
+                    if (msg.offering_url) {
+                        window.location.href = msg.offering_url;
+                    }
+                    else {
+                        console.error("execute-payment failed", resp);
+                    }
+                    return;
+                }
+                let contract = resp.contract;
+                if (!contract) {
+                    throw Error("contract missing");
+                }
+                // We have the details for then payment, the merchant page
+                // is responsible to give it to the merchant.
+                sendResponse({
+                    H_contract: msg.H_contract,
+                    contract: resp.contract,
+                    payment: resp.payReq,
+                });
+            });
+        });
+    }
+})(TalerNotify || (TalerNotify = {}));
+//# sourceMappingURL=notify.js.map
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