yannstatic/static/2019/12/25/Identification-HTTP-avec-PHP-et-lua-ssowat.html

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<article itemscope itemtype="http://schema.org/Article"><div class="article__header"><header><h1 style="color:Tomato;">Identification-HTTP-avec-PHP-et-lua-ssowat</h1></header></div><meta itemprop="headline" content="Identification-HTTP-avec-PHP-et-lua-ssowat"><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">25&nbsp;déc.&nbsp;&nbsp;2019</span>
<span title="Modification" style="color:#00FF7F">23&nbsp;nov.&nbsp;&nbsp;2018</span></li></ul></div><meta itemprop="datePublished" content="2018-11-23T00:00:00+01:00">
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</details><h2 id="utilisation-du-lua">Utilisation du LUA</h2>
<p>Openresty embarque le module HttpLuaModule permettant lexécution de script Lua.<br />
Plusieurs directives permettent de lancer un script à différents moments de la requête, elles sont toutes de la forme « *_by_lua ».<br />
Les fonctions disponibles dans ces directives sont limitées :</p>
<ul>
<li><em>init_by_lua</em> : le code sera exécuté au démarrage quand le serveur nginx lit la configuration. Il est utile pour déclarer des variables globales ou précharger des modules;</li>
<li><em>set_by_lua</em> : permet deffectuer un traitement et de récupérer le résultat dans un variable. Le code exécuté bloque la boucle dévénement de nginx et doit donc être rapide;</li>
<li><em>rewrite_by_lua</em> : le code est exécuté pour chaque requête et après lexécution du module HttpRewrite;</li>
<li><em>access_by_lua</em> : le code est exécuté pour chaque requête et après lexécution du module HttpAccess;</li>
<li><em>header_filter_by_lua</em> : utilisé uniquement pour filtrer les headers de la requête;</li>
<li><em>content_by_lua</em> : utilisé lorsquun script renvoi du contenu via par exemple ngx.say;</li>
<li><em>body_filter_by_lua</em> : le code est exécuté après réception de données de réponse et permet de modifier le contenu renvoyé au client. Il peut être lancé plusieurs fois par requête selon le volume de données;</li>
<li><em>log_by_lua</em> : le code est exécuté après lécriture dans le access log.</li>
</ul>
<p>Voici un exemple dutilisation dune de ces directives, logguer quand une application répond en plus dune seconde :</p>
<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>location / {
log_by_lua '
if tonumber(ngx.var.upstream_response_time) &gt;= 1 then
ngx.log(ngx.WARN, "[WARN] Ngx upstream response time: " .. ngx.var.upstream_response_time .. "s from " .. ngx.var.upstream_addr);
end
';
}
</code></pre></div></div>
<p>Le script Lua est directement écrit dans la configuration nginx. Il est conseillé de mettre le code dans un fichier pour faciliter la maintenance grâce aux directives <strong>« *_by_lua_file »</strong>.</p>
<h3 id="authentification">Authentification</h3>
<p>Si lon cherche à protéger plusieurs applications derrière un unique système dauthentification, il existe plusieurs solutions.</p>
<p>La directive <strong>« auth_request »</strong> permet deffectuer une sous requête sur une url et si le code retour est différent de 200, le serveur retourne un access denied.</p>
<p>On peut construire un système dauthentification plus complexe grâce au <strong>Lua</strong>, par exemple pour authentifier un utilisateur via <strong>oauth</strong> avec un access token passé en paramètre :</p>
<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>local token = ngx.var.arg_access_token
local checkToken = ngx.location.capture('/oauth/check?access_token=' .. token)
if checkToken.status == ngx.HTTP_OK then
...
</code></pre></div></div>
<h2 id="lua-authentificationcookies">Lua Authentification/cookies</h2>
<p><a href="https://www.stavros.io/posts/writing-an-nginx-authentication-module-in-lua/">Writing an nginx authentication module in Lua</a></p>
<p>Les dossiers de configuration nginx en mode su</p>
<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>sudo -s
# renommer le dossier de configuration **default.conf**
mv /etc/nginx/conf.d/default.conf /etc/nginx/conf.d/default.conf.sav
# dossier configuration vhost
mkdir /etc/nginx/conf.d/xinyiczen.xyz.d
</code></pre></div></div>
<h3 id="configuration-nginx-de-base">configuration nginx de base</h3>
<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>nano /etc/nginx/conf.d/xinyiczen.xyz.conf
</code></pre></div></div>
<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>server {
listen 80;
listen [::]:80;
server_name xinyiczen.xyz *.xinyiczen.xyz;
location /.well-known/acme-challenge {
default_type "text/plain";
root /tmp/letsencrypt-auto;
}
location / {
return 301 https://$server_name$request_uri;
}
}
server {
listen 443 ssl;
listen [::]:443 ssl;
server_name xinyiczen.xyz *.xinyiczen.xyz;
ssl_certificate /etc/ssl/private/xinyiczen.xyz.crt.pem;
ssl_certificate_key /etc/ssl/private/xinyiczen.xyz.key.pem;
ssl_session_timeout 5m;
ssl_session_cache shared:SSL:50m;
ssl_prefer_server_ciphers on;
ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
ssl_ciphers ALL:!aNULL:!eNULL:!LOW:!EXP:!RC4:!3DES:+HIGH:+MEDIUM;
add_header Strict-Transport-Security "max-age=31536000;includeSubDomains";
ssl_dhparam /etc/ssl/private/dh4096.pem;
## CSP nginx
add_header Content-Security-Policy "default-src 'self' *.xinyiczen.xyz; img-src 'self' data: https: *.xinyiczen.xyz";
# autoriser uniquement les Iframes provenant du même domaine
add_header X-Frame-Options SAMEORIGIN;
# activer la protection contre les attaques Xss et MIME
add_header X-XSS-Protection "1; mode=block";
add_header X-Content-Type-Options nosniff;
include conf.d/xinyiczen.xyz.d/*.conf;
access_log /var/log/nginx/xinyiczen.xyz-access.log;
error_log /var/log/nginx/xinyiczen.xyz-error.log;
}
</code></pre></div></div>
<h3 id="configuration-lua">Configuration lua</h3>
<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>mkdir /var/www/lua
nano /etc/nginx/conf.d/xinyiczen.xyz.d/lua.conf
</code></pre></div></div>
<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>location /lua {
alias /var/www/lua/;
access_by_lua_file /etc/nginx/conf.d/test.lua;
client_max_body_size 10G;
index index.php index.html;
try_files $uri $uri/ index.php;
location ~ \.php$ {
fastcgi_split_path_info ^(.+\.php)(/.+)$;
fastcgi_pass unix:/run/php/php7.0-fpm.sock;
fastcgi_index index.php;
include fastcgi_params;
fastcgi_param SCRIPT_FILENAME $request_filename;
}
}
</code></pre></div></div>
<h3 id="fichier-testlua">fichier test.lua</h3>
<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>nano /etc/nginx/conf.d/test.lua
</code></pre></div></div>
<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>-- test
local secretkey = "dqhNnp9M6h5BB77i3Q9V"
if ngx.var.cookie_uid == nil or ngx.var.cookie_nickname == nil or ngx.var.cookie_token == nil then
ngx.req.set_header ("Check-Login", "NULL")
return
end
local ctoken = ngx.md5 ("uid:" .. ngx.var.cookie_uid .. "&amp;nickname:" .. ngx.var.cookie_nickname .. "&amp;secretkey:" ..secretkey)
ngx.req.set_header ("ctoken", ctoken)
if ctoken == ngx.var.cookie_token then
ngx.req.set_header ("Check-Login", "Yes")
else
ngx.req.set_header ("Check-Login", "No")
end
return
</code></pre></div></div>
<p>Relancer serveur</p>
<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>service nginx restart
</code></pre></div></div>
<h3 id="fichier-testphp">fichier test.php</h3>
<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>nano /var/www/lua/test.php
</code></pre></div></div>
<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>&lt;pre&gt;&lt;?php
echo "\$_SERVER:\r\n";
unset ($_SERVER['SCRIPT_FILENAME']);
unset ($_SERVER['DOCUMENT_ROOT']);
unset ($_SERVER['PATH']);
unset ($_SERVER['hostname']);
unset ($_SERVER['GATEWAY_INTERFACE']);
print_r ($_SERVER);
echo "\r\n\$_COOKIE:\r\n";
print_r ($_COOKIE);
?&gt;
</code></pre></div></div>
<h3 id="tests-via-curl">Tests via curl</h3>
<p>Accès aux tests : https://xinyiczen.xyz/lua/test.php<br />
Les différents essais réalisés depuis un poste du réseau<br />
Le token 43b7d1aa6ed1ea30bc41214c19cfef88 : md5(uid:7890&amp;nickname:yan&amp;secretkey:dqhNnp9M6h5BB77i3Q9V)<br />
Le test :</p>
<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>curl -b "uid=7890; nickname=yan; token=43b7d1aa6ed1ea30bc41214c19cfef88" "https://xinyiczen.xyz/lua/test.php"
</code></pre></div></div>
<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>&lt;pre&gt;$_SERVER:
Array
(
[USER] =&gt; www-data
[HOME] =&gt; /var/www
[HTTP_CHECK_LOGIN] =&gt; Yes
[HTTP_CTOKEN] =&gt; 43b7d1aa6ed1ea30bc41214c19cfef88
[HTTP_COOKIE] =&gt; uid=7890; nickname=yan; token=43b7d1aa6ed1ea30bc41214c19cfef88
[HTTP_ACCEPT] =&gt; */*
[HTTP_USER_AGENT] =&gt; curl/7.51.0
[HTTP_HOST] =&gt; xinyiczen.xyz
[REDIRECT_STATUS] =&gt; 200
[SERVER_NAME] =&gt; xinyiczen.xyz
[SERVER_PORT] =&gt; 443
[SERVER_ADDR] =&gt; 46.166.168.130
[REMOTE_PORT] =&gt; 51398
[REMOTE_ADDR] =&gt; 78.230.171.39
[SERVER_SOFTWARE] =&gt; nginx/1.10.1
[HTTPS] =&gt; on
[REQUEST_SCHEME] =&gt; https
[SERVER_PROTOCOL] =&gt; HTTP/1.1
[DOCUMENT_URI] =&gt; /lua/test.php
[REQUEST_URI] =&gt; /lua/test.php
[SCRIPT_NAME] =&gt; /lua/test.php
[CONTENT_LENGTH] =&gt;
[CONTENT_TYPE] =&gt;
[REQUEST_METHOD] =&gt; GET
[QUERY_STRING] =&gt;
[FCGI_ROLE] =&gt; RESPONDER
[PHP_SELF] =&gt; /lua/test.php
[REQUEST_TIME_FLOAT] =&gt; 1480964985.391
[REQUEST_TIME] =&gt; 1480964985
)
$_COOKIE:
Array
(
[uid] =&gt; 7890
[nickname] =&gt; yan
[token] =&gt; 43b7d1aa6ed1ea30bc41214c19cfef88
)
</code></pre></div></div>
<h3 id="php-et-ssowat">php et ssowat</h3>
<p>Une fois lutilisateur authentifié par SSOwat, ses credentials sont passés à lapplication Web avec les headers “standard” PHP_AUTH_USER et PHP_AUTH_PW.<br />
Tu nas donc quà implémenter lauthentification basique HTTP (https://fr.wikipedia.org/wiki/Authentification_HTTP#M.C3.A9thode_Basic) dans ton app pour avoir le support derrière SSOwat.</p>
<p><a href="http://www.lephpfacile.com/manuel-php/features.http-auth.php">Identification HTTP avec PHP</a><br />
<a href="http://php.net/manual/fr/reserved.variables.server.php">$_SERVER est un tableau contenant des informations comme les en-têtes, dossiers et chemins du script</a>.<br />
Les entrées de ce tableau sont créées par le serveur web. Il ny a aucune garantie que tous les serveurs les rempliront tous ; certains en oublieront quelques-unes et en rajouteront de nouvelles non mentionnées ici. Cependant, un grand nombre de ces variables fait partie des » spécifications CGI/1.1, et vous pouvez donc vous attendre à les retrouver.</p>
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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';
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top();
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var interval, timeout;
calc(true); setState();
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calc();
}, 100);
timeout = setTimeout(function() {
clearInterval(interval);
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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();
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};
}
$.fn.affix = affix;
});
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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;
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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];
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