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<article itemscope itemtype="http://schema.org/Article"><div class="article__header"><header><h1 style="color:Tomato;">NTP serveur ,timedatectl et systemd-timesyncd</h1></header></div><meta itemprop="headline" content="NTP serveur ,timedatectl et systemd-timesyncd"><div class="article__info clearfix"><ul class="left-col menu"><li>
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<i class="far fa-calendar-alt"></i>&nbsp;<span title="Création" style="color:#FF00FF">26&nbsp;juil.&nbsp;2018</span>
<span title="Modification" style="color:#00FF7F">17&nbsp;janv.&nbsp;2021</span></li></ul></div><meta itemprop="datePublished" content="2021-01-17T00:00:00+01:00">
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<summary><b>Afficher/cacher Sommaire</b></summary>
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</details><h2 id="mise-à-jour-automatique-heure-serveur-ntp">Mise à jour automatique heure serveur (NTP)</h2>
<p><img src="/images/ntp.png" alt="ntp" /></p>
<p>Avoir un serveur à la bonne heure et synchronisé avec les autres serveurs Internet permet d’avoir une référence de temps commune à tout le monde.<br />
On utilise pour cela le protocole NTP (Network Time Protocol) qui permet à un ordinateur de synchroniser son horloge sur d’autres ordinateurs de référence via internet.<br />
Sur l’internet, il existe des serveurs de temps qui fournissent l’heure correcte. Votre fournisseur d’accès Internet peut fournir un service de temps et celui-ci serait votre source la plus proche et probablement la plus précise. Il existe encore de nombreux serveurs NTP indépendants auxquels vous pouvez vous connecter, mais la meilleure source est http://pool.ntp.org.</p>
<h3 id="installation-du-paquet-ntp">Installation du paquet NTP</h3>
<p>On commence par installer le paquet ntp qui contient tout le nécessaire.</p>
<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>sudo apt install ntp
</code></pre></div></div>
<p>A la fin de l’installation, le service ntp démarre automatiquement</p>
<h3 id="configuration-etcntpconf">Configuration /etc/ntp.conf</h3>
<p>Le fichier de configuration de ntp se trouve dans <strong>/etc/ntp.conf</strong></p>
<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>sudo nano /etc/ntp.conf
</code></pre></div></div>
<p>Pour un serveur qui est hébergé en France , spécifier des serveurs ntp situés en France (cf. <a href="http://www.pool.ntp.org/zone/fr">http://www.pool.ntp.org/zone/fr</a>)<br />
Pour cela, remplacer les 4 entrées server du fichier /etc/ntp.conf </p>
<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>pool 0.debian.pool.ntp.org iburst
pool 1.debian.pool.ntp.org iburst
pool 2.debian.pool.ntp.org iburst
pool 3.debian.pool.ntp.org iburst
</code></pre></div></div>
<p>par</p>
<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>pool 0.fr.pool.ntp.org iburst
pool 1.fr.pool.ntp.org iburst
pool 2.fr.pool.ntp.org iburst
pool 3.fr.pool.ntp.org iburst
</code></pre></div></div>
<p><strong>ntp</strong> utilise plusieurs serveurs pour se mettre à l’heure, cela augmente sa précision et en cas d’indisponibilité sur un des serveurs de référence, les autres sont toujours là …<br />
Vous remarquerez l’option <em>iburst</em> spécifiés après le nom du serveur, en cas d’indisponibilité du serveur, <strong>ntp</strong> essaie plusieurs fois avant d’abandonner<br />
Redémarrer le service ntp pour activer nos modifications</p>
<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>sudo systemctl restart ntp
</code></pre></div></div>
<p>Utiliser la commande ntpq -p pour afficher les informations de synchronisation (notamment les serveurs qui vous servent de référence de temps).</p>
<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>ntpq -p
</code></pre></div></div>
<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code> remote refid st t when poll reach delay offset jitter
==============================================================================
0.fr.pool.ntp.o .POOL. 16 p - 64 0 0.000 0.000 0.001
1.fr.pool.ntp.o .POOL. 16 p - 64 0 0.000 0.000 0.001
2.fr.pool.ntp.o .POOL. 16 p - 64 0 0.000 0.000 0.001
3.fr.pool.ntp.o .POOL. 16 p - 64 0 0.000 0.000 0.001
</code></pre></div></div>
<h2 id="utiliser-timesyncd-au-lieu-de-ntp">Utiliser timesyncd au lieu de ntp</h2>
<p>1-Retirer les services ntp (si installé)</p>
<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>systemctl stop ntp.service
systemctl disable ntp.service
systemctl status ntp.service
</code></pre></div></div>
<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>● ntp.service - Network Time Service
Loaded: loaded (/lib/systemd/system/ntp.service; disabled; vendor preset: enabled)
</code></pre></div></div>
<p>2-Configurer timesyncd pour utiliser un serveur de temps</p>
<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>nano /etc/systemd/timesyncd.conf
</code></pre></div></div>
<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>[Time]
NTP=
FallbackNTP=0.fr.pool.ntp.org 1.fr.pool.ntp.org 2.fr.pool.ntp.org 3.fr.pool.ntp.org
</code></pre></div></div>
<p>3-Activer la synchro ntp</p>
<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>timedatectl set-ntp true
</code></pre></div></div>
<p>4-Activer le service timesyncd :</p>
<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>systemctl enable systemd-timesyncd.service
systemctl start systemd-timesyncd.service
systemctl status systemd-timesyncd.service
</code></pre></div></div>
<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>Active: active (running) since Tue 2020-08-25 17:42:51 CEST; 36s left
Status: "Synchronized to time server for the first time 51.77.12.38:123 (0.fr.pool.ntp.org)."
</code></pre></div></div>
<p>Si les erreurs suivantes apparaissent :</p>
<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>ConditionFileIsExecutable=!/usr/sbin/ntpd was not met
Condition check resulted in Network Time Synchronization being skipped.
</code></pre></div></div>
<p>Supprimer ntp : <code class="language-plaintext highlighter-rouge">apt remove ntp ntpdate</code></p>
<p>5-Vérifier que tout est OK :</p>
<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>timedatectl status
</code></pre></div></div>
<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code> Local time: mar. 2020-08-25 17:52:33 CEST
Universal time: mar. 2020-08-25 15:52:33 UTC
RTC time: mar. 2020-08-25 15:52:34
Time zone: Europe/Paris (CEST, +0200)
System clock synchronized: yes
NTP service: active
RTC in local TZ: no
</code></pre></div></div>
<h2 id="debian--ntp-systemd-timesyncdservice-et-timedatectl">Debian – NTP, systemd-timesyncd.service et timedatectl</h2>
<p>Les systèmes d’exploitation modernes font la distinction entre les deux types d’horloges suivants :</p>
<ul>
<li>Une horloge temps réel (« Real-Time Clock », ou RTC), communément appelée horloge matérielle, (habituellement un circuit intégré sur la carte système) est complètement indépendante de l’état actuel du système d’exploitation et fonctionne même lorsque l’ordinateur est éteint.</li>
<li>Une horloge système, également appelée horloge logicielle, est habituellement maintenue par le noyau et sa valeur initiale est basée sur l’horloge temps réel. Une fois le système démarré et l’horloge système initialisée, celle-ci est entièrement indépendante de l’horloge temps réel.</li>
</ul>
<p>Le temps système est toujours conservé sous le format du temps universel coordonné (« Coordinated Universal Time », ou UTC) puis converti dans les applications au temps local selon les besoins. Le temps local correspond à l’heure réelle dans votre fuseau horaire et prend en compte l’heure d’été (« daylight saving time », ou DST). L’horloge temps réel peut utiliser l’heure UTC ou l’heure locale. L’heure UTC est recommandée.</p>
<p>L’utilitaire <strong>timedatectl</strong> est distribué dans le cadre du gestionnaire de services et systèmes systemd et permet de réviser et modifier la configuration de l’horloge système. Vous pouvez utiliser cet outil pour modifier l’heure et la date actuelle, pour définir le fuseau horaire, ou pour activer la synchronisation automatique de l’horloge système avec un serveur distant.</p>
<h3 id="configuration">Configuration</h3>
<p>Fichier de configuration des serveurs NTP : <code class="language-plaintext highlighter-rouge">/etc/systemd/timesyncd.conf</code><br />
Les modifications se font en mode su</p>
<p>Exemple avec des adresses IP au lieu de nom de domaine.<br />
Permet la synchronisation NTP même si aucun serveur DNS n’est joignable :</p>
<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>/etc/systemd/timesyncd.conf
</code></pre></div></div>
<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>[Time]
NTP=145.238.203.14 145.238.203.10
#FallbackNTP=0.debian.pool.ntp.org 1.debian.pool.ntp.org 2.debian.pool.ntp.org 3.debian.pool.ntp.org
</code></pre></div></div>
<p>Les serveurs utilisés sont décrits ici : <a href="https://syrte.obspm.fr/spip/services/ref-temps/article/diffusion-de-l-heure-par-internet-ntp-network-time-protocol">https://syrte.obspm.fr/spip/services/ref-temps/article/diffusion-de-l-heure-par-internet-ntp-network-time-protocol</a></p>
<p>Relancer le service</p>
<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>systemctl daemon-reload
systemctl restart systemd-timesyncd.service
</code></pre></div></div>
<h3 id="activation">Activation</h3>
<p>Vérifier si l’utilisation des serveurs NTP est active :</p>
<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>timedatectl status
</code></pre></div></div>
<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code> Local time: Sun 2021-01-17 10:51:22 CET
Universal time: Sun 2021-01-17 09:51:22 UTC
RTC time: Sun 2021-01-17 09:51:23
Time zone: Europe/Paris (CET, +0100)
System clock synchronized: yes
NTP service: active
RTC in local TZ: no
</code></pre></div></div>
<p>Dans ce cas, « Network time on » et « NTP synchronized » sont à « yes », donc l’utilisation de serveurs NTP est activée.</p>
<p>Dans le cas contraire, il faut l’activer par cette commande :</p>
<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>timedatectl set-ntp true
</code></pre></div></div>
<p>Pour désactiver :</p>
<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>timedatectl set-ntp false
</code></pre></div></div>
<p>Vérifier la prise en compte du serveur avec :</p>
<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>systemctl status systemd-timesyncd.service
</code></pre></div></div>
<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>● systemd-timesyncd.service - Network Time Synchronization
Loaded: loaded (/lib/systemd/system/systemd-timesyncd.service; enabled; vendor pres
Drop-In: /usr/lib/systemd/system/systemd-timesyncd.service.d
└─disable-with-time-daemon.conf
Active: active (running) since Sun 2021-01-17 10:51:17 CET; 9min ago
Docs: man:systemd-timesyncd.service(8)
Main PID: 14311 (systemd-timesyn)
Status: "Synchronized to time server for the first time 145.238.203.14:123 (145.238
Tasks: 2 (limit: 2146)
Memory: 932.0K
CGroup: /system.slice/systemd-timesyncd.service
└─14311 /lib/systemd/systemd-timesyncd
</code></pre></div></div>
<p>La ligne « Status » affiche le serveur utilisé.</p>
<h3 id="mise-à-lheure-manuelle">Mise à l’heure manuelle</h3>
<p>Veiller à ce que « Network time on » soit à no :</p>
<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>timedatectl set-ntp false
</code></pre></div></div>
<p>Afficher l’heure actuelle avec :</p>
<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>timedatectl status
</code></pre></div></div>
<p>Utiliser le même format pour changer l’heure avec cette commande :</p>
<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>timedatectl set-time "2018-07-24 16:40:00"
</code></pre></div></div>
<p>Si le message d’erreur « Failed to parse time specification » est renvoyé, vérifier si la timezone est configurée.</p>
<h3 id="modifier-la-timezone">Modifier la timezone</h3>
<p>Si la timezone est à modifier, utiliser cette commande pour afficher les timezones disponibles :</p>
<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>timedatectl list-timezones
</code></pre></div></div>
<p>Pour cette commande pour définir la timezone sur « Europe/Paris » par exemple :</p>
<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>timedatectl set-timezone "Europe/Paris"
</code></pre></div></div>
<p>Vérifier la prise en compte avec :</p>
<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>timedatectl status
</code></pre></div></div>
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var tlen = haystack.length;
var qlen = needle.length;
if (qlen > tlen) {
return false;
}
if (qlen === tlen) {
return needle === haystack;
}
outer: for (var i = 0, j = 0; i < qlen; i++) {
var nch = needle.charCodeAt(i);
while (j < tlen) {
if (haystack.charCodeAt(j++) === nch) {
continue outer;
}
}
return false;
}
return true;
}
var _$fuzzysearch_1 = fuzzysearch;
'use strict'
/* removed: const _$fuzzysearch_1 = require('fuzzysearch') */;
var _$FuzzySearchStrategy_5 = new FuzzySearchStrategy()
function FuzzySearchStrategy () {
this.matches = function (string, crit) {
return _$fuzzysearch_1(crit.toLowerCase(), string.toLowerCase())
}
}
'use strict'
var _$LiteralSearchStrategy_6 = new LiteralSearchStrategy()
function LiteralSearchStrategy () {
this.matches = function (str, crit) {
if (!str) return false
str = str.trim().toLowerCase()
crit = crit.trim().toLowerCase()
return crit.split(' ').filter(function (word) {
return str.indexOf(word) >= 0
}).length === crit.split(' ').length
}
}
'use strict'
var _$Repository_4 = {
put: put,
clear: clear,
search: search,
setOptions: __setOptions_4
}
/* removed: const _$FuzzySearchStrategy_5 = require('./SearchStrategies/FuzzySearchStrategy') */;
/* removed: const _$LiteralSearchStrategy_6 = require('./SearchStrategies/LiteralSearchStrategy') */;
function NoSort () {
return 0
}
const data = []
let opt = {}
opt.fuzzy = false
opt.limit = 10
opt.searchStrategy = opt.fuzzy ? _$FuzzySearchStrategy_5 : _$LiteralSearchStrategy_6
opt.sort = NoSort
opt.exclude = []
function put (data) {
if (isObject(data)) {
return addObject(data)
}
if (isArray(data)) {
return addArray(data)
}
return undefined
}
function clear () {
data.length = 0
return data
}
function isObject (obj) {
return Boolean(obj) && Object.prototype.toString.call(obj) === '[object Object]'
}
function isArray (obj) {
return Boolean(obj) && Object.prototype.toString.call(obj) === '[object Array]'
}
function addObject (_data) {
data.push(_data)
return data
}
function addArray (_data) {
const added = []
clear()
for (let i = 0, len = _data.length; i < len; i++) {
if (isObject(_data[i])) {
added.push(addObject(_data[i]))
}
}
return added
}
function search (crit) {
if (!crit) {
return []
}
return findMatches(data, crit, opt.searchStrategy, opt).sort(opt.sort)
}
function __setOptions_4 (_opt) {
opt = _opt || {}
opt.fuzzy = _opt.fuzzy || false
opt.limit = _opt.limit || 10
opt.searchStrategy = _opt.fuzzy ? _$FuzzySearchStrategy_5 : _$LiteralSearchStrategy_6
opt.sort = _opt.sort || NoSort
opt.exclude = _opt.exclude || []
}
function findMatches (data, crit, strategy, opt) {
const matches = []
for (let i = 0; i < data.length && matches.length < opt.limit; i++) {
const match = findMatchesInObject(data[i], crit, strategy, opt)
if (match) {
matches.push(match)
}
}
return matches
}
function findMatchesInObject (obj, crit, strategy, opt) {
for (const key in obj) {
if (!isExcluded(obj[key], opt.exclude) && strategy.matches(obj[key], crit)) {
return obj
}
}
}
function isExcluded (term, excludedTerms) {
for (let i = 0, len = excludedTerms.length; i < len; i++) {
const excludedTerm = excludedTerms[i]
if (new RegExp(excludedTerm).test(term)) {
return true
}
}
return false
}
/* globals ActiveXObject:false */
'use strict'
var _$JSONLoader_2 = {
load: load
}
function load (location, callback) {
const xhr = getXHR()
xhr.open('GET', location, true)
xhr.onreadystatechange = createStateChangeListener(xhr, callback)
xhr.send()
}
function createStateChangeListener (xhr, callback) {
return function () {
if (xhr.readyState === 4 && xhr.status === 200) {
try {
callback(null, JSON.parse(xhr.responseText))
} catch (err) {
callback(err, null)
}
}
}
}
function getXHR () {
return window.XMLHttpRequest ? new window.XMLHttpRequest() : new ActiveXObject('Microsoft.XMLHTTP')
}
'use strict'
var _$OptionsValidator_3 = function OptionsValidator (params) {
if (!validateParams(params)) {
throw new Error('-- OptionsValidator: required options missing')
}
if (!(this instanceof OptionsValidator)) {
return new OptionsValidator(params)
}
const requiredOptions = params.required
this.getRequiredOptions = function () {
return requiredOptions
}
this.validate = function (parameters) {
const errors = []
requiredOptions.forEach(function (requiredOptionName) {
if (typeof parameters[requiredOptionName] === 'undefined') {
errors.push(requiredOptionName)
}
})
return errors
}
function validateParams (params) {
if (!params) {
return false
}
return typeof params.required !== 'undefined' && params.required instanceof Array
}
}
'use strict'
var _$utils_9 = {
merge: merge,
isJSON: isJSON
}
function merge (defaultParams, mergeParams) {
const mergedOptions = {}
for (const option in defaultParams) {
mergedOptions[option] = defaultParams[option]
if (typeof mergeParams[option] !== 'undefined') {
mergedOptions[option] = mergeParams[option]
}
}
return mergedOptions
}
function isJSON (json) {
try {
if (json instanceof Object && JSON.parse(JSON.stringify(json))) {
return true
}
return false
} catch (err) {
return false
}
}
var _$src_8 = {};
(function (window) {
'use strict'
let options = {
searchInput: null,
resultsContainer: null,
json: [],
success: Function.prototype,
searchResultTemplate: '<li><a href="{url}" title="{desc}">{title}</a></li>',
templateMiddleware: Function.prototype,
sortMiddleware: function () {
return 0
},
noResultsText: 'No results found',
limit: 10,
fuzzy: false,
debounceTime: null,
exclude: []
}
let debounceTimerHandle
const debounce = function (func, delayMillis) {
if (delayMillis) {
clearTimeout(debounceTimerHandle)
debounceTimerHandle = setTimeout(func, delayMillis)
} else {
func.call()
}
}
const requiredOptions = ['searchInput', 'resultsContainer', 'json']
/* removed: const _$Templater_7 = require('./Templater') */;
/* removed: const _$Repository_4 = require('./Repository') */;
/* removed: const _$JSONLoader_2 = require('./JSONLoader') */;
const optionsValidator = _$OptionsValidator_3({
required: requiredOptions
})
/* removed: const _$utils_9 = require('./utils') */;
window.SimpleJekyllSearch = function (_options) {
const errors = optionsValidator.validate(_options)
if (errors.length > 0) {
throwError('You must specify the following required options: ' + requiredOptions)
}
options = _$utils_9.merge(options, _options)
_$Templater_7.setOptions({
template: options.searchResultTemplate,
middleware: options.templateMiddleware
})
_$Repository_4.setOptions({
fuzzy: options.fuzzy,
limit: options.limit,
sort: options.sortMiddleware,
exclude: options.exclude
})
if (_$utils_9.isJSON(options.json)) {
initWithJSON(options.json)
} else {
initWithURL(options.json)
}
const rv = {
search: search
}
typeof options.success === 'function' && options.success.call(rv)
return rv
}
function initWithJSON (json) {
_$Repository_4.put(json)
registerInput()
}
function initWithURL (url) {
_$JSONLoader_2.load(url, function (err, json) {
if (err) {
throwError('failed to get JSON (' + url + ')')
}
initWithJSON(json)
})
}
function emptyResultsContainer () {
options.resultsContainer.innerHTML = ''
}
function appendToResultsContainer (text) {
options.resultsContainer.innerHTML += text
}
function registerInput () {
options.searchInput.addEventListener('input', function (e) {
if (isWhitelistedKey(e.which)) {
emptyResultsContainer()
debounce(function () { search(e.target.value) }, options.debounceTime)
}
})
}
function search (query) {
if (isValidQuery(query)) {
emptyResultsContainer()
render(_$Repository_4.search(query), query)
}
}
function render (results, query) {
const len = results.length
if (len === 0) {
return appendToResultsContainer(options.noResultsText)
}
for (let i = 0; i < len; i++) {
results[i].query = query
appendToResultsContainer(_$Templater_7.compile(results[i]))
}
}
function isValidQuery (query) {
return query && query.length > 0
}
function isWhitelistedKey (key) {
return [13, 16, 20, 37, 38, 39, 40, 91].indexOf(key) === -1
}
function throwError (message) {
throw new Error('SimpleJekyllSearch --- ' + message)
}
})(window)
}());
</script>
<!-- Configuration -->
<script>
SimpleJekyllSearch({
searchInput: document.getElementById('search-input'),
resultsContainer: document.getElementById('results-container'),
noResultsText: '<p>Aucun résultat!</p>',
json: '/search.json',
searchResultTemplate: '<li><a href="{url}">{date}&nbsp;{title}</a>&nbsp;(Création {create})</li>'
})
</script>
</div></div>
<script>(function() {
var SOURCES = window.TEXT_VARIABLES.sources;
window.Lazyload.js(SOURCES.jquery, function() {
function scrollToAnchor(anchor, duration, callback) {
var $root = this;
$root.animate({ scrollTop: $(anchor).position().top }, duration, function() {
window.history.replaceState(null, '', window.location.href.split('#')[0] + anchor);
callback && callback();
});
}
$.fn.scrollToAnchor = scrollToAnchor;
});
})();
(function() {
var SOURCES = window.TEXT_VARIABLES.sources;
window.Lazyload.js(SOURCES.jquery, function() {
function affix(options) {
var $root = this, $window = $(window), $scrollTarget, $scroll,
offsetBottom = 0, scrollTarget = window, scroll = window.document, disabled = false, isOverallScroller = true,
rootTop, rootLeft, rootHeight, scrollBottom, rootBottomTop,
hasInit = false, curState;
function setOptions(options) {
var _options = options || {};
_options.offsetBottom && (offsetBottom = _options.offsetBottom);
_options.scrollTarget && (scrollTarget = _options.scrollTarget);
_options.scroll && (scroll = _options.scroll);
_options.disabled !== undefined && (disabled = _options.disabled);
$scrollTarget = $(scrollTarget);
isOverallScroller = window.isOverallScroller($scrollTarget[0]);
$scroll = $(scroll);
}
function preCalc() {
top();
rootHeight = $root.outerHeight();
rootTop = $root.offset().top + (isOverallScroller ? 0 : $scrollTarget.scrollTop());
rootLeft = $root.offset().left;
}
function calc(needPreCalc) {
needPreCalc && preCalc();
scrollBottom = $scroll.outerHeight() - offsetBottom - rootHeight;
rootBottomTop = scrollBottom - rootTop;
}
function top() {
if (curState !== 'top') {
$root.removeClass('fixed').css({
left: 0,
top: 0
});
curState = 'top';
}
}
function fixed() {
if (curState !== 'fixed') {
$root.addClass('fixed').css({
left: rootLeft + 'px',
top: 0
});
curState = 'fixed';
}
}
function bottom() {
if (curState !== 'bottom') {
$root.removeClass('fixed').css({
left: 0,
top: rootBottomTop + 'px'
});
curState = 'bottom';
}
}
function setState() {
var scrollTop = $scrollTarget.scrollTop();
if (scrollTop >= rootTop && scrollTop <= scrollBottom) {
fixed();
} else if (scrollTop < rootTop) {
top();
} else {
bottom();
}
}
function init() {
if(!hasInit) {
var interval, timeout;
calc(true); setState();
// run calc every 100 millisecond
interval = setInterval(function() {
calc();
}, 100);
timeout = setTimeout(function() {
clearInterval(interval);
}, 45000);
window.pageLoad.then(function() {
setTimeout(function() {
clearInterval(interval);
clearTimeout(timeout);
}, 3000);
});
$scrollTarget.on('scroll', function() {
disabled || setState();
});
$window.on('resize', function() {
disabled || (calc(true), setState());
});
hasInit = true;
}
}
setOptions(options);
if (!disabled) {
init();
}
$window.on('resize', window.throttle(function() {
init();
}, 200));
return {
setOptions: setOptions,
refresh: function() {
calc(true, { animation: false }); setState();
}
};
}
$.fn.affix = affix;
});
})();
(function() {
var SOURCES = window.TEXT_VARIABLES.sources;
window.Lazyload.js(SOURCES.jquery, function() {
function toc(options) {
var $root = this, $window = $(window), $scrollTarget, $scroller, $tocUl = $('<ul class="toc toc--ellipsis"></ul>'), $tocLi, $headings, $activeLast, $activeCur,
selectors = 'h1,h2,h3', container = 'body', scrollTarget = window, scroller = 'html, body', disabled = false,
headingsPos, scrolling = false, hasRendered = false, hasInit = false;
function setOptions(options) {
var _options = options || {};
_options.selectors && (selectors = _options.selectors);
_options.container && (container = _options.container);
_options.scrollTarget && (scrollTarget = _options.scrollTarget);
_options.scroller && (scroller = _options.scroller);
_options.disabled !== undefined && (disabled = _options.disabled);
$headings = $(container).find(selectors).filter('[id]');
$scrollTarget = $(scrollTarget);
$scroller = $(scroller);
}
function calc() {
headingsPos = [];
$headings.each(function() {
headingsPos.push(Math.floor($(this).position().top));
});
}
function setState(element, disabled) {
var scrollTop = $scrollTarget.scrollTop(), i;
if (disabled || !headingsPos || headingsPos.length < 1) { return; }
if (element) {
$activeCur = element;
} else {
for (i = 0; i < headingsPos.length; i++) {
if (scrollTop >= headingsPos[i]) {
$activeCur = $tocLi.eq(i);
} else {
$activeCur || ($activeCur = $tocLi.eq(i));
break;
}
}
}
$activeLast && $activeLast.removeClass('active');
($activeLast = $activeCur).addClass('active');
}
function render() {
if(!hasRendered) {
$root.append($tocUl);
$headings.each(function() {
var $this = $(this);
$tocUl.append($('<li></li>').addClass('toc-' + $this.prop('tagName').toLowerCase())
.append($('<a></a>').text($this.text()).attr('href', '#' + $this.prop('id'))));
});
$tocLi = $tocUl.children('li');
$tocUl.on('click', 'a', function(e) {
e.preventDefault();
var $this = $(this);
scrolling = true;
setState($this.parent());
$scroller.scrollToAnchor($this.attr('href'), 400, function() {
scrolling = false;
});
});
}
hasRendered = true;
}
function init() {
var interval, timeout;
if(!hasInit) {
render(); calc(); setState(null, scrolling);
// run calc every 100 millisecond
interval = setInterval(function() {
calc();
}, 100);
timeout = setTimeout(function() {
clearInterval(interval);
}, 45000);
window.pageLoad.then(function() {
setTimeout(function() {
clearInterval(interval);
clearTimeout(timeout);
}, 3000);
});
$scrollTarget.on('scroll', function() {
disabled || setState(null, scrolling);
});
$window.on('resize', window.throttle(function() {
if (!disabled) {
render(); calc(); setState(null, scrolling);
}
}, 100));
}
hasInit = true;
}
setOptions(options);
if (!disabled) {
init();
}
$window.on('resize', window.throttle(function() {
init();
}, 200));
return {
setOptions: setOptions
};
}
$.fn.toc = toc;
});
})();
/*(function () {
})();*/
</script><script>
/* toc must before affix, since affix need to konw toc' height. */(function() {
var SOURCES = window.TEXT_VARIABLES.sources;
var TOC_SELECTOR = window.TEXT_VARIABLES.site.toc.selectors;
window.Lazyload.js(SOURCES.jquery, function() {
var $window = $(window);
var $articleContent = $('.js-article-content');
var $tocRoot = $('.js-toc-root'), $col2 = $('.js-col-aside');
var toc;
var tocDisabled = false;
var hasSidebar = $('.js-page-root').hasClass('layout--page--sidebar');
var hasToc = $articleContent.find(TOC_SELECTOR).length > 0;
function disabled() {
return $col2.css('display') === 'none' || !hasToc;
}
tocDisabled = disabled();
toc = $tocRoot.toc({
selectors: TOC_SELECTOR,
container: $articleContent,
scrollTarget: hasSidebar ? '.js-page-main' : null,
scroller: hasSidebar ? '.js-page-main' : null,
disabled: tocDisabled
});
$window.on('resize', window.throttle(function() {
tocDisabled = disabled();
toc && toc.setOptions({
disabled: tocDisabled
});
}, 100));
});
})();
(function() {
var SOURCES = window.TEXT_VARIABLES.sources;
window.Lazyload.js(SOURCES.jquery, function() {
var $window = $(window), $pageFooter = $('.js-page-footer');
var $pageAside = $('.js-page-aside');
var affix;
var tocDisabled = false;
var hasSidebar = $('.js-page-root').hasClass('layout--page--sidebar');
affix = $pageAside.affix({
offsetBottom: $pageFooter.outerHeight(),
scrollTarget: hasSidebar ? '.js-page-main' : null,
scroller: hasSidebar ? '.js-page-main' : null,
scroll: hasSidebar ? $('.js-page-main').children() : null,
disabled: tocDisabled
});
$window.on('resize', window.throttle(function() {
affix && affix.setOptions({
disabled: tocDisabled
});
}, 100));
window.pageAsideAffix = affix;
});
})();
</script><!---->
</div>
<script>(function () {
var $root = document.getElementsByClassName('root')[0];
if (window.hasEvent('touchstart')) {
$root.dataset.isTouch = true;
document.addEventListener('touchstart', function(){}, false);
}
})();
</script>
</body>
</html>
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