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112 lines
4.2 KiB
JavaScript
112 lines
4.2 KiB
JavaScript
/* vim: ts=4:sw=4
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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'use strict';
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;(function() {
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/**********************
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*** Device Storage ***
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**********************/
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window.textsecure = window.textsecure || {};
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window.textsecure.storage = window.textsecure.storage || {};
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window.textsecure.storage.devices = {
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saveDeviceObject: function(deviceObject) {
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return internalSaveDeviceObject(deviceObject, false);
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},
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saveKeysToDeviceObject: function(deviceObject) {
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return internalSaveDeviceObject(deviceObject, true);
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},
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getDeviceObjectsForNumber: function(number) {
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var map = textsecure.storage.getEncrypted("devices" + number);
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return map === undefined ? [] : map.devices;
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},
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getDeviceObject: function(encodedNumber) {
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var number = textsecure.utils.unencodeNumber(encodedNumber);
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var devices = textsecure.storage.devices.getDeviceObjectsForNumber(number[0]);
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if (devices === undefined)
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return undefined;
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for (var i in devices)
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if (devices[i].encodedNumber == encodedNumber)
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return devices[i];
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return undefined;
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},
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removeDeviceIdsForNumber: function(number, deviceIdsToRemove) {
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var map = textsecure.storage.getEncrypted("devices" + number);
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if (map === undefined)
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throw new Error("Tried to remove device for unknown number");
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var newDevices = [];
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var devicesRemoved = 0;
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for (var i in map.devices) {
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var keep = true;
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for (var j in deviceIdsToRemove)
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if (map.devices[i].encodedNumber == number + "." + deviceIdsToRemove[j])
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keep = false;
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if (keep)
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newDevices.push(map.devices[i]);
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else
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devicesRemoved++;
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}
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if (devicesRemoved != deviceIdsToRemove.length)
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throw new Error("Tried to remove unknown device");
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}
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};
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var internalSaveDeviceObject = function(deviceObject, onlyKeys) {
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if (deviceObject.identityKey === undefined || deviceObject.encodedNumber === undefined)
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throw new Error("Tried to store invalid deviceObject");
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var number = textsecure.utils.unencodeNumber(deviceObject.encodedNumber)[0];
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var map = textsecure.storage.getEncrypted("devices" + number);
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if (map === undefined)
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map = { devices: [deviceObject], identityKey: deviceObject.identityKey };
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else if (map.identityKey != getString(deviceObject.identityKey))
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throw new Error("Identity key changed");
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else {
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var updated = false;
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for (var i in map.devices) {
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if (map.devices[i].encodedNumber == deviceObject.encodedNumber) {
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if (!onlyKeys)
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map.devices[i] = deviceObject;
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else {
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map.devices[i].preKey = deviceObject.preKey;
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map.devices[i].preKeyId = deviceObject.preKeyId;
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map.devices[i].signedKey = deviceObject.signedKey;
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map.devices[i].signedKeyId = deviceObject.signedKeyId;
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map.devices[i].registrationId = deviceObject.registrationId;
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}
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updated = true;
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}
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}
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if (!updated)
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map.devices.push(deviceObject);
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}
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textsecure.storage.putEncrypted("devices" + number, map);
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};
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})();
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