[feat] add web/js core API

Implements http REST API for the core and bitmask.js generic library to
use this API. For events it uses long polling.

- Resolves: #8265

3 files changed, 290 insertions, 40 deletions

diff --git a/src/leap/bitmask/core/web/bitmask.js b/src/leap/bitmask/core/web/bitmask.js
new file mode 100644
index 00000000..39e677f3
--- /dev/null
+++ b/src/leap/bitmask/core/web/bitmask.js
@@ -0,0 +1,257 @@
+// bitmask.js
+// Copyright (C) 2016 LEAP
+//
+// This program 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 of the License, or
+// (at your option) any later version.
+//
+// This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * bitmask object
+ *
+ * Contains all the bitmask API mapped by sections
+ * - user. User management like login, creation, ...
+ * - mail. Email service control.
+ * - keys. Keyring operations.
+ * - events. For registering to events.
+ *
+ * Every function returns a Promise that will be triggered once the request is
+ * finished or will fail if there was any error. Errors are always user readable
+ * strings.
+ */
+var bitmask = function(){
+    var event_handlers = {};
+    
+    function call(command) {
+        var url = '/API/' + command.slice(0, 2).join('/');
+        var data = JSON.stringify(command.slice(2));
+
+        return new Promise(function(resolve, reject) {
+            var req = new XMLHttpRequest();
+            req.open('POST', url);
+            
+            req.onload = function() {
+                if (req.status == 200) {
+                    parseResponse(req.response, resolve, reject);
+                }
+                else {
+                    reject(Error(req.statusText));
+                }
+            };
+            
+            req.onerror = function() {
+                reject(Error("Network Error"));
+            };
+            
+            req.send(data);
+        });
+    };
+
+    function parseResponse(raw_response, resolve, reject) {
+        var response = JSON.parse(raw_response);
+        if (response.error === null) {
+            resolve(response.result);
+        } else {
+            reject(response.error);
+        }
+    };
+
+    function event_polling() {
+        call(['events', 'poll']).then(function(response) {
+            if (response !== null) {
+                evnt = response[0];
+                content = response[1];
+                if (evnt in event_handlers) {
+                    event_handlers[evnt](evnt, content);
+                }
+            }
+            event_polling();
+        }, function(error) {
+            setTimeout(event_polling, 5000);
+        });
+    };
+    event_polling();
+
+    function private_str(priv) {
+        if (priv) {
+            return 'private'
+        }
+        return 'public'
+    };
+
+    return {
+        /**
+         * uids are of the form user@provider.net
+         */
+        user: {
+            /**
+             * Check wich user is active
+             *
+             * @return {Promise<string>} The uid of the active user
+             */
+            active: function() {
+                return call(['user', 'active']);
+            },
+
+            /**
+             * Register a new user
+             *
+             * @param {string} uid The uid to be created
+             * @param {string} password The user password
+             */
+            create: function(uid, password) {
+                return call(['user', 'create', uid, password]);
+            },
+
+            /**
+             * Login
+             *
+             * @param {string} uid The uid to log in
+             * @param {string} password The user password
+             */
+            auth: function(uid, password) {
+                return call(['user', 'authenticate', uid, password]);
+            },
+
+            /**
+             * Logout
+             *
+             * @param {string} uid The uid to log out.
+             *                     If no uid is provided the active user will be used
+             */
+            logout: function(uid) {
+                if (typeof uid !== 'string') {
+                    uid = "";
+                }
+                return call(['user', 'logout', uid]);
+            }
+        },
+
+        mail: {
+            /**
+             * Check the status of the email service
+             *
+             * @return {Promise<string>} User readable status
+             */
+            status: function() {
+                return call(['mail', 'status']);
+            },
+
+            /**
+             * Get the token of the active user.
+             *
+             * This token is used as password to authenticate in the IMAP and SMTP services.
+             *
+             * @return {Promise<string>} The token
+             */
+            get_token: function() {
+                return call(['mail', 'get-token']);
+            }
+        },
+
+        /**
+         * A KeyObject have the following attributes:
+         *   - address {string} the email address for wich this key is active
+         *   - fingerprint {string} the fingerprint of the key
+         *   - length {number} the size of the key bits
+         *   - private {bool} if the key is private
+         *   - uids {[string]} the uids in the key
+         *   - key_data {string} the key content
+         *   - validation {string} the validation level which this key was found
+         *   - expiry_date {string} date when the key expires
+         *   - refreshed_at {string} date of the last refresh of the key
+         *   - audited_at {string} date of the last audit (unused for now)
+         *   - sign_used {bool} if has being used to checking signatures
+         *   - enc_used {bool} if has being used to encrypt
+         */
+        keys: {
+            /**
+             * List all the keys in the keyring
+             *
+             * @param {boolean} priv Should list private keys?
+             *                       If it's not provided the public ones will be listed.
+             *
+             * @return {Promise<[KeyObject]>} List of keys in the keyring
+             */
+            list: function(priv) {
+                return call(['keys', 'list', private_str(priv)]);
+            },
+
+            /**
+             * Export key
+             *
+             * @param {string} address The email address of the key
+             * @param {boolean} priv Should get the private key?
+             *                       If it's not provided the public one will be fetched.
+             *
+             * @return {Promise<KeyObject>} The key
+             */
+            exprt: function(address, priv) {
+                return call(['keys', 'export', address, private_str(priv)]);
+            },
+
+            /**
+             * Insert key
+             *
+             * @param {string} address The email address of the key
+             * @param {string} rawkey The key material
+             * @param {string} validation The validation level of the key
+             *                            If it's not provided 'Fingerprint' level will be used.
+             *
+             * @return {Promise<KeyObject>} The key
+             */
+            insert: function(address, rawkey, validation) {
+                if (typeof validation !== 'string') {
+                    validation = 'Fingerprint';
+                }
+                return call(['keys', 'insert', address, validation, rawkey]);
+            },
+
+            /**
+             * Delete a key
+             *
+             * @param {string} address The email address of the key
+             * @param {boolean} priv Should get the private key?
+             *                       If it's not provided the public one will be deleted.
+             *
+             * @return {Promise<KeyObject>} The key
+             */
+            del: function(address, priv) {
+                return call(['keys', 'delete', address, private_str(priv)]);
+            }
+        },
+
+        events: {
+            /**
+             * Register func for an event
+             *
+             * @param {string} evnt The event to register
+             * @param {function} func The function that will be called on each event.
+             *                        It has to be like: function(event, content) {}
+             *                        Where content will be a list of strings.
+             */
+            register: function(evnt, func) {
+                event_handlers[evnt] = func;
+                return call(['events', 'register', evnt])
+            },
+
+            /**
+             * Unregister from an event
+             *
+             * @param {string} evnt The event to unregister
+             */
+            unregister: function(evnt) {
+                delete event_handlers[evnt];
+                return call(['events', 'unregister', evnt])
+            }
+        }
+    };
+}();
diff --git a/src/leap/bitmask/core/web/index.html b/src/leap/bitmask/core/web/index.html
index 9490eca8..6ac9b29e 100644
--- a/src/leap/bitmask/core/web/index.html
+++ b/src/leap/bitmask/core/web/index.html
@@ -2,53 +2,44 @@
 <html>
    <head>
       <title>Bitmask WebSockets Endpoint</title>
+      <script src="bitmask.js"></script>
       <script type="text/javascript">
-         var sock = null;
          var ellog = null;
 
          window.onload = function() {
-
             ellog = document.getElementById('log');
 
-            var wsuri;
-            if (window.location.protocol === "file:") {
-               wsuri = "ws://127.0.0.1:8080/ws";
-            } else {
-               wsuri = "ws://" + window.location.hostname + ":8080/bitmask";
-            }
-
-            if ("WebSocket" in window) {
-               sock = new WebSocket(wsuri);
-            } else if ("MozWebSocket" in window) {
-               sock = new MozWebSocket(wsuri);
-            } else {
-               log("Browser does not support WebSocket!");
-               window.location = "http://autobahn.ws/unsupportedbrowser";
-            }
-
-            if (sock) {
-               sock.onopen = function() {
-                  log("Connected to " + wsuri);
-               }
-
-               sock.onclose = function(e) {
-                  log("Connection closed (wasClean = " + e.wasClean + ", code = " + e.code + ", reason = '" + e.reason + "')");
-                  sock = null;
-               }
+            bitmask.events.register("KEYMANAGER_KEY_FOUND", event_handler);
+         };
 
-               sock.onmessage = function(e) {
-                  log("[res] " + e.data + '\n');
-               }
-            }
+         function login() {
+            var email = document.getElementById('email').value;
+            var password = document.getElementById('password').value;
+            bitmask.user.auth(email, password).then(function(response) {
+                log("We are logged in: ");
+                for (k in response) {
+                    log("    " + k + ": " + response[k]);
+                }
+            }, function(error) {
+                log("Some error ocurred: " + error);
+            });
          };
 
-         function send() {
-            var msg = document.getElementById('message').value;
-            if (sock) {
-               sock.send(msg);
-               log("[cmd] " + msg);
-            } else {
-               log("Not connected.");
+         function logout() {
+            bitmask.user.logout().then(function(response) {
+                log("We are logged out: ");
+                for (k in response) {
+                    log("    " + k + ": " + response[k]);
+                }
+            }, function(error) {
+                log("Some error ocurred: " + error);
+            });
+	 };
+
+         function event_handler(evnt, content) {
+            log("Event: " + evnt);
+            for (i in content) {
+               log("    " + content[i]);
             }
          };
 
@@ -62,9 +53,11 @@
       <h1>Bitmask Control Panel</h1>
       <noscript>You must enable JavaScript</noscript>
       <form>
-         <p>Command: <input id="message" type="text" size="50" maxlength="50" value="status"></p>
+         <p>Email address: <input id="email" type="text" size="50" maxlength="50" value="user@mail.bitmask.net"></p>
+         <p>Password: <input id="password" type="password" size="50" maxlength="50" ></p>
       </form>
-      <button onclick='send();'>Send Command</button>
+      <button onclick='login();'>Log In</button>
+      <button onclick='logout();'>Log Out</button>
       <pre id="log" style="height: 20em; overflow-y: scroll; background-color: #faa;"></pre>
    </body>
 </html>
diff --git a/src/leap/bitmask/core/web/root.py b/src/leap/bitmask/core/web/root.py
deleted file mode 100644
index e69de29b..00000000
--- a/src/leap/bitmask/core/web/root.py
+++ /dev/null