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-rw-r--r--javascript/demo/group_demo.js89
1 files changed, 69 insertions, 20 deletions
diff --git a/javascript/demo/group_demo.js b/javascript/demo/group_demo.js
index bd54ea0..35b22a3 100644
--- a/javascript/demo/group_demo.js
+++ b/javascript/demo/group_demo.js
@@ -2,12 +2,23 @@
* browser.
*/
-function buttonAndTextElement(buttonLabel, textContent, clickHandler) {
- var el = document.createElement("div");
-
+function buttonElement(buttonLabel, clickHandler) {
var button = document.createElement("button");
- el.appendChild(button);
button.appendChild(document.createTextNode(buttonLabel));
+ button.addEventListener("click", clickHandler, false);
+ return button;
+}
+
+function buttonsAndText(textContent, buttonLabelToHandlerMap) {
+ var el = document.createElement("div");
+ for (var label in buttonLabelToHandlerMap) {
+ if (!buttonLabelToHandlerMap.hasOwnProperty(label)) {
+ continue;
+ }
+ var handler = buttonLabelToHandlerMap[label];
+ var button = buttonElement(label, handler);
+ el.appendChild(button);
+ }
var message_element = document.createElement("tt");
el.appendChild(message_element);
@@ -15,22 +26,33 @@ function buttonAndTextElement(buttonLabel, textContent, clickHandler) {
var content = document.createTextNode(textContent);
message_element.appendChild(content);
- el.addEventListener("click", clickHandler, false);
return el;
}
+function buttonAndTextElement(buttonLabel, textContent, clickHandler) {
+ var buttonMap = {};
+ buttonMap[buttonLabel] = clickHandler;
+ return buttonsAndText(textContent, buttonMap);
+}
+
function DemoUser(name) {
this.name = name;
this.olmAccount = new Olm.Account();
this.olmAccount.create();
+ this.idKey = this.getIdKeys()["curve25519"];
+
/* the people in our chat, indexed by their Curve25519 identity key.
*/
this.peers = {};
+ /* the Ed25519 signing key for each peer, indexed by their Curve25519 id key
+ */
+ this.peerSigningKeys = {};
+
/* for each peer, a one-to-one session - indexed by id key and created on
* demand */
- this.peerSessions = {}
+ this.peerSessions = {};
/* for each peer, info on their sender session - indexed by id key and
* session id */
@@ -45,7 +67,7 @@ function DemoUser(name) {
/* the operations our peers are allowed to do on us */
var publicOps = [
- "getIdKey", "getOneTimeKey",
+ "getIdKeys", "getOneTimeKey",
"receiveOneToOne", "receiveGroup",
];
@@ -135,13 +157,14 @@ DemoUser.prototype.addTask = function(description, task, callback) {
};
DemoUser.prototype.addPeer = function(peerOps) {
- var id = peerOps.getIdKey();
+ var keys = peerOps.getIdKeys();
+ var id = keys["curve25519"];
this.peers[id] = peerOps;
+ this.peerSigningKeys[id] = keys["ed25519"];
};
-DemoUser.prototype.getIdKey = function() {
- var keys = JSON.parse(this.olmAccount.identity_keys());
- return keys.curve25519;
+DemoUser.prototype.getIdKeys = function() {
+ return JSON.parse(this.olmAccount.identity_keys());
};
DemoUser.prototype.generateKeys = function(callback) {
@@ -203,7 +226,7 @@ DemoUser.prototype.sendToPeer = function(peerId, message, callback) {
self.addTask("encrypt one-to-one message", function(done) {
var encrypted = session.encrypt(message);
var packet = {
- sender_key: self.getIdKey(),
+ sender_key: self.idKey,
ciphertext: encrypted,
};
var json = JSON.stringify(packet);
@@ -357,6 +380,16 @@ DemoUser.prototype.decryptGroup = function(jsonpacket, callback) {
var sender = packet.sender_key;
var session_id = packet.session_id;
+ var sender_signing_key = self.peerSigningKeys[sender];
+ if (!sender_signing_key) {
+ throw new Error("No known signing key for sender "+sender);
+ }
+
+ var olmUtility = new Olm.Utility();
+ olmUtility.ed25519_verify(
+ sender_signing_key, packet.body, packet.signature
+ );
+
var peer_sessions = self.peerGroupSessions[sender];
if (!peer_sessions) {
throw new Error("No sessions for sender "+sender);
@@ -383,22 +416,37 @@ DemoUser.prototype.encrypt = function(message) {
var self = this;
var session = this.getGroupSession();
+ function sendJsonToPeers(json) {
+ for (var peer in self.peers) {
+ if (!self.peers.hasOwnProperty(peer)) {
+ continue;
+ }
+ self.peers[peer].receiveGroup(json);
+ }
+ }
+
+
self.addTask("encrypt group message", function(done) {
var encrypted = session.encrypt(message);
+ var signature = self.olmAccount.sign(encrypted);
+
var packet = {
- sender_key: self.getIdKey(),
+ sender_key: self.idKey,
session_id: session.session_id(),
body: encrypted,
+ signature: signature,
};
var json = JSON.stringify(packet);
- var el = buttonAndTextElement("send", json, function(ev) {
- for (var peer in self.peers) {
- if (!self.peers.hasOwnProperty(peer)) {
- continue;
- }
- self.peers[peer].receiveGroup(json);
- }
+ var el = buttonsAndText(json, {
+ send: function(ev) {
+ sendJsonToPeers(json);
+ },
+ "send corrupted": function(ev) {
+ var p = JSON.parse(json);
+ p.body += " ";
+ sendJsonToPeers(JSON.stringify(p));
+ },
});
self.groupOutputDiv.appendChild(el);
done();
@@ -406,6 +454,7 @@ DemoUser.prototype.encrypt = function(message) {
};
+/* ************************************************************************** */
function initUserDiv(demoUser, div) {
demoUser.progressElement = div.getElementsByClassName("user_progress")[0];