From 2a8202e74846d191a321cca1202175af9db6107d Mon Sep 17 00:00:00 2001
From: dec05eba <dec05eba@protonmail.com>
Date: Thu, 5 Nov 2020 01:45:06 +0100
Subject: Convert to sibs project

---
 javascript/demo/group_demo.js | 506 ------------------------------------------
 1 file changed, 506 deletions(-)
 delete mode 100644 javascript/demo/group_demo.js

(limited to 'javascript/demo/group_demo.js')

diff --git a/javascript/demo/group_demo.js b/javascript/demo/group_demo.js
deleted file mode 100644
index 44b8166..0000000
--- a/javascript/demo/group_demo.js
+++ /dev/null
@@ -1,506 +0,0 @@
-/* Javascript parts of the group demo. To use, load group_demo.html in your
- * browser.
- */
-
-function buttonElement(buttonLabel, clickHandler) {
-    var button = document.createElement("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);
-
-    var content = document.createTextNode(textContent);
-    message_element.appendChild(content);
-
-    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 = {};
-
-    /* for each peer, info on their sender session - indexed by id key and
-     * session id */
-    this.peerGroupSessions = {};
-
-    /* our outbound group session */
-    this.groupSession = undefined;
-
-    /* a list of pending tasks */
-    this.tasks = [];
-    this.taskWorker = undefined;
-
-    /* the operations our peers are allowed to do on us */
-    var publicOps = [
-        "getIdKeys", "getOneTimeKey",
-        "receiveOneToOne", "receiveGroup",
-    ];
-
-    this.remoteOps = {};
-    for (var i=0; i<publicOps.length; i++) {
-        var op = publicOps[i];
-        this.remoteOps[op] = this[op].bind(this);
-    }
-}
-
-DemoUser.prototype._progress = function(message) {
-    var progress = this.progressElement;
-
-    var message_element = document.createElement("pre");
-    var start_content = document.createTextNode(message + "...");
-    function start() {
-        message_element.appendChild(start_content);
-        progress.appendChild(message_element);
-    }
-    function done(res) {
-        var done_content = document.createTextNode(message + "..." + res);
-        message_element.replaceChild(done_content, start_content);
-    }
-    return {start:start, done:done};
-};
-
-DemoUser.prototype._do_tasks = function() {
-    var self = this;
-    var task = self.tasks.shift();
-    var desc = task[0];
-    var func = task[1];
-    var callback = task[2];
-
-    var p = self._progress(desc);
-    p.start();
-
-    function done() {
-        p.done("Done");
-
-        if (callback) {
-            try {
-                callback.apply(undefined, arguments)
-            } catch (e) {
-                console.error("Uncaught exception in callback", e.stack || e);
-            }
-        }
-
-        start_tasks();
-    }
-
-    // sleep 50ms before actually doing the task
-    self.taskWorker = window.setTimeout(function() {
-        try {
-            task[1](done);
-        } catch (e) {
-            console.error("Uncaught exception in task", e.stack || e);
-            p.done("Failed: "+e);
-            start_tasks();
-        }
-    }, 50);
-
-
-    function start_tasks() {
-        if (self.tasks.length == 0) {
-            self.taskWorker = undefined;
-            return;
-        }
-
-        self.taskWorker = window.setTimeout(self._do_tasks.bind(self), 50);
-    }
-}
-
-/**
- * add a function "task" to this user's queue of things to do.
- *
- * task is called with a single argument 'done' which is a function to call
- * once the task is complete.
- *
- * 'callback' is called once the task is complete, with any arguments that
- * were passed to 'done'.
- */
-DemoUser.prototype.addTask = function(description, task, callback) {
-    this.tasks.push([description, task, callback]);
-    if(!this.taskWorker) {
-        this._do_tasks();
-    }
-};
-
-DemoUser.prototype.addPeer = function(peerOps) {
-    var keys = peerOps.getIdKeys();
-    var id = keys["curve25519"];
-    this.peers[id] = peerOps;
-    this.peerSigningKeys[id] = keys["ed25519"];
-};
-
-DemoUser.prototype.getIdKeys = function() {
-    return JSON.parse(this.olmAccount.identity_keys());
-};
-
-DemoUser.prototype.getOneTimeKey = function() {
-    var self = this;
-    self.olmAccount.generate_one_time_keys(1);
-    var keys = JSON.parse(self.olmAccount.one_time_keys()).curve25519;
-    for (key_id in keys) {
-        if (keys.hasOwnProperty(key_id)) {
-            self.olmAccount.mark_keys_as_published();
-            return keys[key_id];
-        }
-    }
-    throw new Error("No one-time-keys generated");
-};
-
-/* ************************************************************************
- *
- * one-to-one messaging
- */
-
-/**
- * retrieve, or initiate, a one-to-one session to a given peer
- */
-DemoUser.prototype.getPeerSession = function(peerId, callback) {
-    var self = this;
-
-    if (this.peerSessions[peerId]) {
-        callback(this.peerSessions[peerId]);
-        return;
-    }
-
-    var peer = this.peers[peerId];
-    this.addTask("get peer keys", function(done) {
-        key = peer.getOneTimeKey();
-        done(key);
-    }, function(ot_key) {
-        self.addTask("create peer session", function(done) {
-            var session = new Olm.Session();
-            session.create_outbound(self.olmAccount, peerId, ot_key);
-            self.peerSessions[peerId] = session;
-            done(session);
-        }, callback);
-    });
-};
-
-/**
- * encrypt a one-to-one message and prepare it for sending to a peer
- */
-DemoUser.prototype.sendToPeer = function(peerId, message, callback) {
-    var self = this;
-    this.getPeerSession(peerId, function(session) {
-        self.addTask("encrypt one-to-one message", function(done) {
-            var encrypted = session.encrypt(message);
-            var packet = {
-                sender_key: self.idKey,
-                ciphertext: encrypted,
-            };
-            var json = JSON.stringify(packet);
-
-            var el = buttonAndTextElement("send", json, function(ev) {
-                self.peers[peerId].receiveOneToOne(json);
-            });
-            self.cipherOutputDiv.appendChild(el);
-            done();
-        }, callback);
-    });
-};
-
-/**
- * handler for receiving a one-to-one message
- */
-DemoUser.prototype.receiveOneToOne = function(jsonpacket) {
-    var self = this;
-    var el = buttonAndTextElement("decrypt", jsonpacket, function(ev) {
-        var sender = JSON.parse(jsonpacket).sender_key;
-        self.decryptOneToOne(jsonpacket, function(result) {
-
-            var el2 = document.createElement("tt");
-            el.appendChild(el2);
-
-            var content = document.createTextNode(" -> "+result);
-            el2.appendChild(content);
-
-            var body = JSON.parse(result);
-
-            // create a new inbound session if we don't yet have one
-            if (!self.peerGroupSessions[sender] ||
-                   !self.peerGroupSessions[sender][body.session_id]) {
-                self.createInboundSession(
-                    sender, body.session_id, body.session_key
-                );
-            }
-        });
-    });
-    this.cipherInputDiv.appendChild(el);
-};
-
-/**
- * add a task to decrypt a one-to-one message. Calls the callback with the
- * decrypted plaintext
- */
-DemoUser.prototype.decryptOneToOne = function(jsonpacket, callback) {
-    var self = this;
-    self.addTask("decrypt one-to-one message", function(done) {
-        var packet = JSON.parse(jsonpacket);
-        var peerId = packet.sender_key;
-
-        var session = self.peerSessions[peerId];
-        var plaintext;
-        if (session) {
-            plaintext = session.decrypt(packet.ciphertext.type, packet.ciphertext.body);
-            done(plaintext);
-            return;
-        }
-
-        if (packet.ciphertext.type != 0) {
-            throw new Error("Unknown one-to-one session");
-        }
-
-        session = new Olm.Session();
-        session.create_inbound(self.olmAccount, packet.ciphertext.body);
-        self.peerSessions[peerId] = session;
-        plaintext = session.decrypt(packet.ciphertext.type, packet.ciphertext.body);
-        done(plaintext);
-    }, callback)
-};
-
-/* ************************************************************************
- *
- * group messaging
- */
-
-
-/**
- * retrieve, or initiate, an outbound group session
- */
-DemoUser.prototype.getGroupSession = function() {
-    if (this.groupSession) {
-        return this.groupSession;
-    }
-
-    this.groupSession = new Olm.OutboundGroupSession();
-    this.groupSession.create();
-
-    var keymsg = {
-        "session_id": this.groupSession.session_id(),
-        "session_key": this.groupSession.session_key(),
-        "message_index": this.groupSession.message_index(),
-    };
-    var jsonmsg = JSON.stringify(keymsg);
-
-    for (var peer in this.peers) {
-        if (!this.peers.hasOwnProperty(peer)) {
-            continue;
-        }
-        this.sendToPeer(peer, jsonmsg);
-    }
-
-    return this.groupSession;
-};
-
-/**
- * add a task to create an inbound group session
- */
-DemoUser.prototype.createInboundSession = function(
-    peer_id, session_id, session_key, callback
-) {
-    var self = this;
-    this.addTask("init inbound session", function(done) {
-        session = new Olm.InboundGroupSession();
-        session.create(session_key);
-        if (!self.peerGroupSessions[peer_id]) {
-            self.peerGroupSessions[peer_id] = {};
-        }
-        if (session_id != session.session_id()) {
-            throw new Error("Mismatched session_ids");
-        }
-        self.peerGroupSessions[peer_id][session_id] = session;
-        done(session);
-    }, callback);
-};
-
-/**
- * handler for receiving a group message
- */
-DemoUser.prototype.receiveGroup = function(jsonpacket) {
-    var self = this;
-    var el = buttonAndTextElement("decrypt", jsonpacket, function(ev) {
-        self.decryptGroup(jsonpacket, function(result) {
-            var el2 = document.createElement("tt");
-            el.appendChild(el2);
-
-            var content = document.createTextNode(" -> "+result);
-            el2.appendChild(content);
-        });
-    });
-    this.groupInputDiv.appendChild(el);
-};
-
-/**
- * add a task to decrypt a received group message. Calls the callback with the
- * decrypted plaintext
- */
-DemoUser.prototype.decryptGroup = function(jsonpacket, callback) {
-    var self = this;
-    this.addTask("decrypt group message", function(done) {
-        var packet = JSON.parse(jsonpacket);
-
-        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);
-        }
-
-        var session = peer_sessions[session_id];
-        if (!session) {
-            throw new Error("Unknown session id " + session_id);
-        }
-
-        var result = session.decrypt(packet.body);
-        done(result.plaintext);
-    }, callback);
-};
-
-
-
-/**
- * add a task to encrypt, and prepare for sending, a group message.
- *
- * Will create a group session if necessary
- */
-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.idKey,
-            session_id: session.session_id(),
-            body: encrypted,
-            signature: signature,
-        };
-        var json = JSON.stringify(packet);
-
-        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();
-    });
-};
-
-
-/* ************************************************************************** */
-
-function initUserDiv(demoUser, div) {
-    demoUser.progressElement = div.getElementsByClassName("user_progress")[0];
-    demoUser.cipherOutputDiv = div.getElementsByClassName("user_cipher_output")[0];
-    demoUser.cipherInputDiv = div.getElementsByClassName("user_cipher_input")[0];
-    demoUser.groupOutputDiv = div.getElementsByClassName("group_output")[0];
-    demoUser.groupInputDiv = div.getElementsByClassName("group_input")[0];
-
-    var plain_input = div.getElementsByClassName("user_plain_input")[0];
-    var encrypt = div.getElementsByClassName("user_encrypt")[0];
-
-    encrypt.addEventListener("click", function() {
-        demoUser.encrypt(plain_input.value);
-    }, false);
-
-}
-
-function startDemo() {
-    var user1 = new DemoUser();
-    initUserDiv(user1, document.getElementById("user1"));
-
-    var user2 = new DemoUser();
-    initUserDiv(user2, document.getElementById("user2"));
-
-    var user3 = new DemoUser();
-    initUserDiv(user3, document.getElementById("user3"));
-
-    var user4 = new DemoUser();
-    initUserDiv(user4, document.getElementById("user4"));
-
-    user1.addPeer(user2.remoteOps);
-    user1.addPeer(user3.remoteOps);
-    user1.addPeer(user4.remoteOps);
-
-    user2.addPeer(user1.remoteOps);
-    user2.addPeer(user3.remoteOps);
-    user2.addPeer(user4.remoteOps);
-
-    user3.addPeer(user1.remoteOps);
-    user3.addPeer(user2.remoteOps);
-    user3.addPeer(user4.remoteOps);
-
-    user4.addPeer(user1.remoteOps);
-    user4.addPeer(user2.remoteOps);
-    user4.addPeer(user3.remoteOps);
-}
-
-
-document.addEventListener("DOMContentLoaded", function() {
-    Olm.init().then(function() {
-        startDemo();
-    });
-}, false);
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