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🎉 Add uuid v1 implementation.
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parent
2390735164
commit
20cd5b1d9c
4 changed files with 154 additions and 48 deletions
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@ -10,61 +10,43 @@
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goog.provide("uxbox.util.rng_impl");
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goog.provide("uxbox.util.rng_impl");
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goog.require("cljs.core");
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goog.require("cljs.core");
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goog.require("goog.object");
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goog.scope(function() {
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goog.scope(function() {
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const self = uxbox.util.rng_impl;
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const self = uxbox.util.rng_impl;
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const global = goog.global;
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const platform = cljs.core._STAR_target_STAR_;
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// Check if nodejs rng is available (high quality);
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if (platform === "nodejs") {
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if (cljs.core._STAR_target_STAR_ === "nodejs") {
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const crypto = require("crypto");
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const crypto = require("crypto");
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self.fill = function(buf) {
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crypto.randomFillSync(buf);
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return buf;
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};
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self.getBytes = function(n) {
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self.getBytes = function(n) {
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return crypto.randomBytes(n);
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return crypto.randomBytes(n);
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};
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};
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}
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// Check if whatwg rng is available (high quality);
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} else {
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else if (global.crypto !== undefined &&
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const gobj = goog.object;
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global.crypto.getRandomValues !== undefined) {
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const global = goog.global;
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const crypto = gobj.get(global, "crypto");
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self.fill = function(buf) {
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if (crypto === undefined) {
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global.crypto.getRandomValues(buf);
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console.warn("No high quality RNG available, switching back to Math.random.", platform);
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return buf;
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};
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self.getBytes = function(n) {
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self.getBytes = function(n) {
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const buf = new Uint8Array(16);
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const buf = new Uint8Array(n);
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global.crypto.getRandomValues(buf);
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return buf;
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};
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}
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// Switch Back to the Math.random (low quality);
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for (let i = 0, r; i < n; i++) {
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else {
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if ((i & 0x03) === 0) { r = Math.random() * 0x100000000; }
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console.warn("No high quality RNG available, switching back to Math.random.");
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buf[i] = r >>> ((i & 0x03) << 3) & 0xff;
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}
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self.fill = function(buf) {
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return buf;
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for (let i = 0, r; i < buf.length; i++) {
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};
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if ((i & 0x03) === 0) { r = Math.random() * 0x100000000; }
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} else {
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buf[i] = r >>> ((i & 0x03) << 3) & 0xff;
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self.getBytes = function(n) {
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}
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const buf = new Uint8Array(n);
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crypto.getRandomValues(buf);
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return buf;
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return buf;
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};
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};
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}
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self.getBytes = function(n) {
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const buf = new Array(n);
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for (let i = 0, r; i < n; i++) {
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if ((i & 0x03) === 0) { r = Math.random() * 0x100000000; }
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buf[i] = r >>> ((i & 0x03) << 3) & 0xff;
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}
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return buf;
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};
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}
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}
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});
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});
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@ -2,7 +2,10 @@
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;; License, v. 2.0. If a copy of the MPL was not distributed with this
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;; License, v. 2.0. If a copy of the MPL was not distributed with this
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;; file, You can obtain one at http://mozilla.org/MPL/2.0/.
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;; file, You can obtain one at http://mozilla.org/MPL/2.0/.
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;;
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;;
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;; Copyright (c) 2016 Andrey Antukh <niwi@niwi.nz>
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;; This Source Code Form is "Incompatible With Secondary Licenses", as
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;; defined by the Mozilla Public License, v. 2.0.
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;;
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;; Copyright (c) 2016-2020 Andrey Antukh <niwi@niwi.nz>
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(ns uxbox.util.uuid
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(ns uxbox.util.uuid
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"Provides a UUID v4 uuid generation.
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"Provides a UUID v4 uuid generation.
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@ -13,7 +16,7 @@
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If no high qualiry RNG, switches to the default Math based
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If no high qualiry RNG, switches to the default Math based
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RNG with proper waring in the console."
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RNG with proper waring in the console."
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(:refer-clojure :exclude [zero?])
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(:refer-clojure :exclude [zero? next])
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(:require [uxbox.util.uuid-impl :as impl]))
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(:require [uxbox.util.uuid-impl :as impl]))
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(def zero #uuid "00000000-0000-0000-0000-000000000000")
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(def zero #uuid "00000000-0000-0000-0000-000000000000")
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@ -22,6 +25,11 @@
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[v]
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[v]
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(= zero v))
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(= zero v))
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(defn next
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"Generate a v1 (time-based) UUID."
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[]
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(uuid (impl/v1)))
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(defn random
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(defn random
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"Generate a v4 (random) UUID."
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"Generate a v4 (random) UUID."
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[]
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[]
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@ -3,8 +3,34 @@
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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*
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* Copyright (c) 2016 Andrey Antukh <niwi@niwi.nz>
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* This Source Code Form is "Incompatible With Secondary Licenses", as
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*/
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* defined by the Mozilla Public License, v. 2.0.
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*
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* Copyright (c) 2016-2020 Andrey Antukh <niwi@niwi.nz>
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*/
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/*
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* The MIT License (MIT)
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*
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* Copyright (c) 2010-2016 Robert Kieffer and other contributors
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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"use strict";
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"use strict";
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goog.provide("uxbox.util.uuid_impl");
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goog.provide("uxbox.util.uuid_impl");
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@ -45,4 +71,91 @@ goog.scope(function() {
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buf[8] = (buf[8] & 0x3f) | 0x80;
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buf[8] = (buf[8] & 0x3f) | 0x80;
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return toHexString(buf);
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return toHexString(buf);
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};
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};
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})
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let initialized = false;
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let node;
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let clockseq;
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let lastms = 0;
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let lastns = 0;
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self.v1 = function() {
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let cs = clockseq;
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if (!initialized) {
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const seed = rng.getBytes(8);
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// Per 4.5, create and 48-bit node id, (47 random bits + multicast bit = 1)
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node = [
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seed[0] | 0x01,
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seed[1],
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seed[2],
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seed[3],
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seed[4],
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seed[5]
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];
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// Per 4.2.2, randomize (14 bit) clockseq
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cs = clockseq = (seed[6] << 8 | seed[7]) & 0x3fff;
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initialized = true;
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}
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let ms = Date.now();
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let ns = lastns + 1;
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let dt = (ms - lastms) + (ns - lastns) / 10000;
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// Per 4.2.1.2, Bump clockseq on clock regression
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if (dt < 0) {
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cs = cs + 1 & 0x3fff;
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}
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// Reset nsecs if clock regresses (new clockseq) or we've moved onto a new
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// time interval
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if (dt < 0 || ms > lastms) {
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ns = 0;
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}
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// Per 4.2.1.2 Throw error if too many uuids are requested
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if (ns >= 10000) {
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throw new Error("uuid v1 can't create more than 10M uuids/s")
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}
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lastms = ms;
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lastns = ns;
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clockseq = cs;
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// Per 4.1.4 - Convert from unix epoch to Gregorian epoch
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ms += 12219292800000;
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let i = 0;
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let buf = new Uint8Array(16);
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// `time_low`
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var tl = ((ms & 0xfffffff) * 10000 + ns) % 0x100000000;
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buf[i++] = tl >>> 24 & 0xff;
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buf[i++] = tl >>> 16 & 0xff;
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buf[i++] = tl >>> 8 & 0xff;
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buf[i++] = tl & 0xff;
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// `time_mid`
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var tmh = (ms / 0x100000000 * 10000) & 0xfffffff;
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buf[i++] = tmh >>> 8 & 0xff;
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buf[i++] = tmh & 0xff;
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// `time_high_and_version`
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buf[i++] = tmh >>> 24 & 0xf | 0x10; // include version
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buf[i++] = tmh >>> 16 & 0xff;
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// `clock_seq_hi_and_reserved` (Per 4.2.2 - include variant)
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buf[i++] = cs >>> 8 | 0x80;
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// `clock_seq_low`
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buf[i++] = cs & 0xff;
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// `node`
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for (var n = 0; n < 6; ++n) {
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buf[i + n] = node[n];
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}
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return toHexString(buf);
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}
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});
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5
frontend/vendor/main.externs.js
vendored
5
frontend/vendor/main.externs.js
vendored
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"result": function() {},
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"result": function() {},
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"readAsText": function() {},
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"readAsText": function() {},
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"src": function() {},
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"src": function() {},
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"readAsDataURL": function() {}
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"readAsDataURL": function() {},
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"crypto": {
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"getRandomValues": function() {}
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}
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};
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};
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