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1 | import express from 'express' | |
2 | import { readFile } from 'fs-extra' | |
3 | import { join } from 'path' | |
4 | import validator from 'validator' | |
5 | import { toCompleteUUID } from '@server/helpers/custom-validators/misc' | |
6 | import { escapeHTML } from '@shared/core-utils/renderer' | |
7 | import { HTMLServerConfig } from '@shared/models' | |
8 | import { buildFileLocale, getDefaultLocale, is18nLocale, POSSIBLE_LOCALES } from '../../shared/core-utils/i18n/i18n' | |
9 | import { HttpStatusCode } from '../../shared/models/http/http-error-codes' | |
10 | import { VideoPlaylistPrivacy, VideoPrivacy } from '../../shared/models/videos' | |
11 | import { isTestInstance, sha256 } from '../helpers/core-utils' | |
12 | import { logger } from '../helpers/logger' | |
13 | import { mdToPlainText } from '../helpers/markdown' | |
14 | import { CONFIG } from '../initializers/config' | |
15 | import { | |
16 | ACCEPT_HEADERS, | |
17 | ACTOR_IMAGES_SIZE, | |
18 | CUSTOM_HTML_TAG_COMMENTS, | |
19 | EMBED_SIZE, | |
20 | FILES_CONTENT_HASH, | |
21 | PLUGIN_GLOBAL_CSS_PATH, | |
22 | WEBSERVER | |
23 | } from '../initializers/constants' | |
24 | import { AccountModel } from '../models/account/account' | |
25 | import { getActivityStreamDuration } from '../models/video/formatter/video-format-utils' | |
26 | import { VideoModel } from '../models/video/video' | |
27 | import { VideoChannelModel } from '../models/video/video-channel' | |
28 | import { VideoPlaylistModel } from '../models/video/video-playlist' | |
29 | import { MAccountActor, MChannelActor } from '../types/models' | |
30 | import { ServerConfigManager } from './server-config-manager' | |
31 | ||
32 | type Tags = { | |
33 | ogType: string | |
34 | twitterCard: 'player' | 'summary' | 'summary_large_image' | |
35 | schemaType: string | |
36 | ||
37 | list?: { | |
38 | numberOfItems: number | |
39 | } | |
40 | ||
41 | escapedSiteName: string | |
42 | escapedTitle: string | |
43 | escapedDescription: string | |
44 | ||
45 | url: string | |
46 | originUrl: string | |
47 | ||
48 | disallowIndexation?: boolean | |
49 | ||
50 | embed?: { | |
51 | url: string | |
52 | createdAt: string | |
53 | duration?: string | |
54 | views?: number | |
55 | } | |
56 | ||
57 | image: { | |
58 | url: string | |
59 | width?: number | |
60 | height?: number | |
61 | } | |
62 | } | |
63 | ||
64 | class ClientHtml { | |
65 | ||
66 | private static htmlCache: { [path: string]: string } = {} | |
67 | ||
68 | static invalidCache () { | |
69 | logger.info('Cleaning HTML cache.') | |
70 | ||
71 | ClientHtml.htmlCache = {} | |
72 | } | |
73 | ||
74 | static async getDefaultHTMLPage (req: express.Request, res: express.Response, paramLang?: string) { | |
75 | const html = paramLang | |
76 | ? await ClientHtml.getIndexHTML(req, res, paramLang) | |
77 | : await ClientHtml.getIndexHTML(req, res) | |
78 | ||
79 | let customHtml = ClientHtml.addTitleTag(html) | |
80 | customHtml = ClientHtml.addDescriptionTag(customHtml) | |
81 | ||
82 | return customHtml | |
83 | } | |
84 | ||
85 | static async getWatchHTMLPage (videoIdArg: string, req: express.Request, res: express.Response) { | |
86 | const videoId = toCompleteUUID(videoIdArg) | |
87 | ||
88 | // Let Angular application handle errors | |
89 | if (!validator.isInt(videoId) && !validator.isUUID(videoId, 4)) { | |
90 | res.status(HttpStatusCode.NOT_FOUND_404) | |
91 | return ClientHtml.getIndexHTML(req, res) | |
92 | } | |
93 | ||
94 | const [ html, video ] = await Promise.all([ | |
95 | ClientHtml.getIndexHTML(req, res), | |
96 | VideoModel.loadWithBlacklist(videoId) | |
97 | ]) | |
98 | ||
99 | // Let Angular application handle errors | |
100 | if (!video || video.privacy === VideoPrivacy.PRIVATE || video.privacy === VideoPrivacy.INTERNAL || video.VideoBlacklist) { | |
101 | res.status(HttpStatusCode.NOT_FOUND_404) | |
102 | return html | |
103 | } | |
104 | const description = mdToPlainText(video.description) | |
105 | ||
106 | let customHtml = ClientHtml.addTitleTag(html, video.name) | |
107 | customHtml = ClientHtml.addDescriptionTag(customHtml, description) | |
108 | ||
109 | const url = WEBSERVER.URL + video.getWatchStaticPath() | |
110 | const originUrl = video.url | |
111 | const title = video.name | |
112 | const siteName = CONFIG.INSTANCE.NAME | |
113 | ||
114 | const image = { | |
115 | url: WEBSERVER.URL + video.getPreviewStaticPath() | |
116 | } | |
117 | ||
118 | const embed = { | |
119 | url: WEBSERVER.URL + video.getEmbedStaticPath(), | |
120 | createdAt: video.createdAt.toISOString(), | |
121 | duration: getActivityStreamDuration(video.duration), | |
122 | views: video.views | |
123 | } | |
124 | ||
125 | const ogType = 'video' | |
126 | const twitterCard = CONFIG.SERVICES.TWITTER.WHITELISTED ? 'player' : 'summary_large_image' | |
127 | const schemaType = 'VideoObject' | |
128 | ||
129 | customHtml = ClientHtml.addTags(customHtml, { | |
130 | url, | |
131 | originUrl, | |
132 | escapedSiteName: escapeHTML(siteName), | |
133 | escapedTitle: escapeHTML(title), | |
134 | escapedDescription: escapeHTML(description), | |
135 | image, | |
136 | embed, | |
137 | ogType, | |
138 | twitterCard, | |
139 | schemaType | |
140 | }) | |
141 | ||
142 | return customHtml | |
143 | } | |
144 | ||
145 | static async getWatchPlaylistHTMLPage (videoPlaylistIdArg: string, req: express.Request, res: express.Response) { | |
146 | const videoPlaylistId = toCompleteUUID(videoPlaylistIdArg) | |
147 | ||
148 | // Let Angular application handle errors | |
149 | if (!validator.isInt(videoPlaylistId) && !validator.isUUID(videoPlaylistId, 4)) { | |
150 | res.status(HttpStatusCode.NOT_FOUND_404) | |
151 | return ClientHtml.getIndexHTML(req, res) | |
152 | } | |
153 | ||
154 | const [ html, videoPlaylist ] = await Promise.all([ | |
155 | ClientHtml.getIndexHTML(req, res), | |
156 | VideoPlaylistModel.loadWithAccountAndChannel(videoPlaylistId, null) | |
157 | ]) | |
158 | ||
159 | // Let Angular application handle errors | |
160 | if (!videoPlaylist || videoPlaylist.privacy === VideoPlaylistPrivacy.PRIVATE) { | |
161 | res.status(HttpStatusCode.NOT_FOUND_404) | |
162 | return html | |
163 | } | |
164 | ||
165 | const description = mdToPlainText(videoPlaylist.description) | |
166 | ||
167 | let customHtml = ClientHtml.addTitleTag(html, videoPlaylist.name) | |
168 | customHtml = ClientHtml.addDescriptionTag(customHtml, description) | |
169 | ||
170 | const url = WEBSERVER.URL + videoPlaylist.getWatchStaticPath() | |
171 | const originUrl = videoPlaylist.url | |
172 | const title = videoPlaylist.name | |
173 | const siteName = CONFIG.INSTANCE.NAME | |
174 | ||
175 | const image = { | |
176 | url: videoPlaylist.getThumbnailUrl() | |
177 | } | |
178 | ||
179 | const embed = { | |
180 | url: WEBSERVER.URL + videoPlaylist.getEmbedStaticPath(), | |
181 | createdAt: videoPlaylist.createdAt.toISOString() | |
182 | } | |
183 | ||
184 | const list = { | |
185 | numberOfItems: videoPlaylist.get('videosLength') as number | |
186 | } | |
187 | ||
188 | const ogType = 'video' | |
189 | const twitterCard = CONFIG.SERVICES.TWITTER.WHITELISTED ? 'player' : 'summary' | |
190 | const schemaType = 'ItemList' | |
191 | ||
192 | customHtml = ClientHtml.addTags(customHtml, { | |
193 | url, | |
194 | originUrl, | |
195 | escapedSiteName: escapeHTML(siteName), | |
196 | escapedTitle: escapeHTML(title), | |
197 | escapedDescription: escapeHTML(description), | |
198 | embed, | |
199 | image, | |
200 | list, | |
201 | ogType, | |
202 | twitterCard, | |
203 | schemaType | |
204 | }) | |
205 | ||
206 | return customHtml | |
207 | } | |
208 | ||
209 | static async getAccountHTMLPage (nameWithHost: string, req: express.Request, res: express.Response) { | |
210 | const accountModelPromise = AccountModel.loadByNameWithHost(nameWithHost) | |
211 | return this.getAccountOrChannelHTMLPage(() => accountModelPromise, req, res) | |
212 | } | |
213 | ||
214 | static async getVideoChannelHTMLPage (nameWithHost: string, req: express.Request, res: express.Response) { | |
215 | const videoChannelModelPromise = VideoChannelModel.loadByNameWithHostAndPopulateAccount(nameWithHost) | |
216 | return this.getAccountOrChannelHTMLPage(() => videoChannelModelPromise, req, res) | |
217 | } | |
218 | ||
219 | static async getActorHTMLPage (nameWithHost: string, req: express.Request, res: express.Response) { | |
220 | const [ account, channel ] = await Promise.all([ | |
221 | AccountModel.loadByNameWithHost(nameWithHost), | |
222 | VideoChannelModel.loadByNameWithHostAndPopulateAccount(nameWithHost) | |
223 | ]) | |
224 | ||
225 | return this.getAccountOrChannelHTMLPage(() => Promise.resolve(account || channel), req, res) | |
226 | } | |
227 | ||
228 | static async getEmbedHTML () { | |
229 | const path = ClientHtml.getEmbedPath() | |
230 | ||
231 | if (!isTestInstance() && ClientHtml.htmlCache[path]) return ClientHtml.htmlCache[path] | |
232 | ||
233 | const buffer = await readFile(path) | |
234 | const serverConfig = await ServerConfigManager.Instance.getHTMLServerConfig() | |
235 | ||
236 | let html = buffer.toString() | |
237 | html = await ClientHtml.addAsyncPluginCSS(html) | |
238 | html = ClientHtml.addCustomCSS(html) | |
239 | html = ClientHtml.addTitleTag(html) | |
240 | html = ClientHtml.addDescriptionTag(html) | |
241 | html = ClientHtml.addServerConfig(html, serverConfig) | |
242 | ||
243 | ClientHtml.htmlCache[path] = html | |
244 | ||
245 | return html | |
246 | } | |
247 | ||
248 | private static async getAccountOrChannelHTMLPage ( | |
249 | loader: () => Promise<MAccountActor | MChannelActor>, | |
250 | req: express.Request, | |
251 | res: express.Response | |
252 | ) { | |
253 | const [ html, entity ] = await Promise.all([ | |
254 | ClientHtml.getIndexHTML(req, res), | |
255 | loader() | |
256 | ]) | |
257 | ||
258 | // Let Angular application handle errors | |
259 | if (!entity) { | |
260 | res.status(HttpStatusCode.NOT_FOUND_404) | |
261 | return ClientHtml.getIndexHTML(req, res) | |
262 | } | |
263 | ||
264 | const description = mdToPlainText(entity.description) | |
265 | ||
266 | let customHtml = ClientHtml.addTitleTag(html, entity.getDisplayName()) | |
267 | customHtml = ClientHtml.addDescriptionTag(customHtml, description) | |
268 | ||
269 | const url = entity.getLocalUrl() | |
270 | const originUrl = entity.Actor.url | |
271 | const siteName = CONFIG.INSTANCE.NAME | |
272 | const title = entity.getDisplayName() | |
273 | ||
274 | const image = { | |
275 | url: entity.Actor.getAvatarUrl(), | |
276 | width: ACTOR_IMAGES_SIZE.AVATARS.width, | |
277 | height: ACTOR_IMAGES_SIZE.AVATARS.height | |
278 | } | |
279 | ||
280 | const ogType = 'website' | |
281 | const twitterCard = 'summary' | |
282 | const schemaType = 'ProfilePage' | |
283 | ||
284 | customHtml = ClientHtml.addTags(customHtml, { | |
285 | url, | |
286 | originUrl, | |
287 | escapedTitle: escapeHTML(title), | |
288 | escapedSiteName: escapeHTML(siteName), | |
289 | escapedDescription: escapeHTML(description), | |
290 | image, | |
291 | ogType, | |
292 | twitterCard, | |
293 | schemaType, | |
294 | disallowIndexation: !entity.Actor.isOwned() | |
295 | }) | |
296 | ||
297 | return customHtml | |
298 | } | |
299 | ||
300 | private static async getIndexHTML (req: express.Request, res: express.Response, paramLang?: string) { | |
301 | const path = ClientHtml.getIndexPath(req, res, paramLang) | |
302 | if (!isTestInstance() && ClientHtml.htmlCache[path]) return ClientHtml.htmlCache[path] | |
303 | ||
304 | const buffer = await readFile(path) | |
305 | const serverConfig = await ServerConfigManager.Instance.getHTMLServerConfig() | |
306 | ||
307 | let html = buffer.toString() | |
308 | ||
309 | html = ClientHtml.addManifestContentHash(html) | |
310 | html = ClientHtml.addFaviconContentHash(html) | |
311 | html = ClientHtml.addLogoContentHash(html) | |
312 | html = ClientHtml.addCustomCSS(html) | |
313 | html = ClientHtml.addServerConfig(html, serverConfig) | |
314 | html = await ClientHtml.addAsyncPluginCSS(html) | |
315 | ||
316 | ClientHtml.htmlCache[path] = html | |
317 | ||
318 | return html | |
319 | } | |
320 | ||
321 | private static getIndexPath (req: express.Request, res: express.Response, paramLang: string) { | |
322 | let lang: string | |
323 | ||
324 | // Check param lang validity | |
325 | if (paramLang && is18nLocale(paramLang)) { | |
326 | lang = paramLang | |
327 | ||
328 | // Save locale in cookies | |
329 | res.cookie('clientLanguage', lang, { | |
330 | secure: WEBSERVER.SCHEME === 'https', | |
331 | sameSite: 'none', | |
332 | maxAge: 1000 * 3600 * 24 * 90 // 3 months | |
333 | }) | |
334 | ||
335 | } else if (req.cookies.clientLanguage && is18nLocale(req.cookies.clientLanguage)) { | |
336 | lang = req.cookies.clientLanguage | |
337 | } else { | |
338 | lang = req.acceptsLanguages(POSSIBLE_LOCALES) || getDefaultLocale() | |
339 | } | |
340 | ||
341 | logger.debug( | |
342 | 'Serving %s HTML language', buildFileLocale(lang), | |
343 | { cookie: req.cookies?.clientLanguage, paramLang, acceptLanguage: req.headers['accept-language'] } | |
344 | ) | |
345 | ||
346 | return join(__dirname, '../../../client/dist/' + buildFileLocale(lang) + '/index.html') | |
347 | } | |
348 | ||
349 | private static getEmbedPath () { | |
350 | return join(__dirname, '../../../client/dist/standalone/videos/embed.html') | |
351 | } | |
352 | ||
353 | private static addManifestContentHash (htmlStringPage: string) { | |
354 | return htmlStringPage.replace('[manifestContentHash]', FILES_CONTENT_HASH.MANIFEST) | |
355 | } | |
356 | ||
357 | private static addFaviconContentHash (htmlStringPage: string) { | |
358 | return htmlStringPage.replace('[faviconContentHash]', FILES_CONTENT_HASH.FAVICON) | |
359 | } | |
360 | ||
361 | private static addLogoContentHash (htmlStringPage: string) { | |
362 | return htmlStringPage.replace('[logoContentHash]', FILES_CONTENT_HASH.LOGO) | |
363 | } | |
364 | ||
365 | private static addTitleTag (htmlStringPage: string, title?: string) { | |
366 | let text = title || CONFIG.INSTANCE.NAME | |
367 | if (title) text += ` - ${CONFIG.INSTANCE.NAME}` | |
368 | ||
369 | const titleTag = `<title>${escapeHTML(text)}</title>` | |
370 | ||
371 | return htmlStringPage.replace(CUSTOM_HTML_TAG_COMMENTS.TITLE, titleTag) | |
372 | } | |
373 | ||
374 | private static addDescriptionTag (htmlStringPage: string, description?: string) { | |
375 | const content = description || CONFIG.INSTANCE.SHORT_DESCRIPTION | |
376 | const descriptionTag = `<meta name="description" content="${escapeHTML(content)}" />` | |
377 | ||
378 | return htmlStringPage.replace(CUSTOM_HTML_TAG_COMMENTS.DESCRIPTION, descriptionTag) | |
379 | } | |
380 | ||
381 | private static addCustomCSS (htmlStringPage: string) { | |
382 | const styleTag = `<style class="custom-css-style">${CONFIG.INSTANCE.CUSTOMIZATIONS.CSS}</style>` | |
383 | ||
384 | return htmlStringPage.replace(CUSTOM_HTML_TAG_COMMENTS.CUSTOM_CSS, styleTag) | |
385 | } | |
386 | ||
387 | private static addServerConfig (htmlStringPage: string, serverConfig: HTMLServerConfig) { | |
388 | // Stringify the JSON object, and then stringify the string object so we can inject it into the HTML | |
389 | const serverConfigString = JSON.stringify(JSON.stringify(serverConfig)) | |
390 | const configScriptTag = `<script type="application/javascript">window.PeerTubeServerConfig = ${serverConfigString}</script>` | |
391 | ||
392 | return htmlStringPage.replace(CUSTOM_HTML_TAG_COMMENTS.SERVER_CONFIG, configScriptTag) | |
393 | } | |
394 | ||
395 | private static async addAsyncPluginCSS (htmlStringPage: string) { | |
396 | const globalCSSContent = await readFile(PLUGIN_GLOBAL_CSS_PATH) | |
397 | if (globalCSSContent.byteLength === 0) return htmlStringPage | |
398 | ||
399 | const fileHash = sha256(globalCSSContent) | |
400 | const linkTag = `<link rel="stylesheet" href="/plugins/global.css?hash=${fileHash}" />` | |
401 | ||
402 | return htmlStringPage.replace('</head>', linkTag + '</head>') | |
403 | } | |
404 | ||
405 | private static generateOpenGraphMetaTags (tags: Tags) { | |
406 | const metaTags = { | |
407 | 'og:type': tags.ogType, | |
408 | 'og:site_name': tags.escapedSiteName, | |
409 | 'og:title': tags.escapedTitle, | |
410 | 'og:image': tags.image.url | |
411 | } | |
412 | ||
413 | if (tags.image.width && tags.image.height) { | |
414 | metaTags['og:image:width'] = tags.image.width | |
415 | metaTags['og:image:height'] = tags.image.height | |
416 | } | |
417 | ||
418 | metaTags['og:url'] = tags.url | |
419 | metaTags['og:description'] = tags.escapedDescription | |
420 | ||
421 | if (tags.embed) { | |
422 | metaTags['og:video:url'] = tags.embed.url | |
423 | metaTags['og:video:secure_url'] = tags.embed.url | |
424 | metaTags['og:video:type'] = 'text/html' | |
425 | metaTags['og:video:width'] = EMBED_SIZE.width | |
426 | metaTags['og:video:height'] = EMBED_SIZE.height | |
427 | } | |
428 | ||
429 | return metaTags | |
430 | } | |
431 | ||
432 | private static generateStandardMetaTags (tags: Tags) { | |
433 | return { | |
434 | name: tags.escapedTitle, | |
435 | description: tags.escapedDescription, | |
436 | image: tags.image.url | |
437 | } | |
438 | } | |
439 | ||
440 | private static generateTwitterCardMetaTags (tags: Tags) { | |
441 | const metaTags = { | |
442 | 'twitter:card': tags.twitterCard, | |
443 | 'twitter:site': CONFIG.SERVICES.TWITTER.USERNAME, | |
444 | 'twitter:title': tags.escapedTitle, | |
445 | 'twitter:description': tags.escapedDescription, | |
446 | 'twitter:image': tags.image.url | |
447 | } | |
448 | ||
449 | if (tags.image.width && tags.image.height) { | |
450 | metaTags['twitter:image:width'] = tags.image.width | |
451 | metaTags['twitter:image:height'] = tags.image.height | |
452 | } | |
453 | ||
454 | if (tags.twitterCard === 'player') { | |
455 | metaTags['twitter:player'] = tags.embed.url | |
456 | metaTags['twitter:player:width'] = EMBED_SIZE.width | |
457 | metaTags['twitter:player:height'] = EMBED_SIZE.height | |
458 | } | |
459 | ||
460 | return metaTags | |
461 | } | |
462 | ||
463 | private static generateSchemaTags (tags: Tags) { | |
464 | const schema = { | |
465 | '@context': 'http://schema.org', | |
466 | '@type': tags.schemaType, | |
467 | 'name': tags.escapedTitle, | |
468 | 'description': tags.escapedDescription, | |
469 | 'image': tags.image.url, | |
470 | 'url': tags.url | |
471 | } | |
472 | ||
473 | if (tags.list) { | |
474 | schema['numberOfItems'] = tags.list.numberOfItems | |
475 | schema['thumbnailUrl'] = tags.image.url | |
476 | } | |
477 | ||
478 | if (tags.embed) { | |
479 | schema['embedUrl'] = tags.embed.url | |
480 | schema['uploadDate'] = tags.embed.createdAt | |
481 | ||
482 | if (tags.embed.duration) schema['duration'] = tags.embed.duration | |
483 | if (tags.embed.views) schema['iterationCount'] = tags.embed.views | |
484 | ||
485 | schema['thumbnailUrl'] = tags.image.url | |
486 | schema['contentUrl'] = tags.url | |
487 | } | |
488 | ||
489 | return schema | |
490 | } | |
491 | ||
492 | private static addTags (htmlStringPage: string, tagsValues: Tags) { | |
493 | const openGraphMetaTags = this.generateOpenGraphMetaTags(tagsValues) | |
494 | const standardMetaTags = this.generateStandardMetaTags(tagsValues) | |
495 | const twitterCardMetaTags = this.generateTwitterCardMetaTags(tagsValues) | |
496 | const schemaTags = this.generateSchemaTags(tagsValues) | |
497 | ||
498 | const { url, escapedTitle, embed, originUrl, disallowIndexation } = tagsValues | |
499 | ||
500 | const oembedLinkTags: { type: string, href: string, escapedTitle: string }[] = [] | |
501 | ||
502 | if (embed) { | |
503 | oembedLinkTags.push({ | |
504 | type: 'application/json+oembed', | |
505 | href: WEBSERVER.URL + '/services/oembed?url=' + encodeURIComponent(url), | |
506 | escapedTitle | |
507 | }) | |
508 | } | |
509 | ||
510 | let tagsStr = '' | |
511 | ||
512 | // Opengraph | |
513 | Object.keys(openGraphMetaTags).forEach(tagName => { | |
514 | const tagValue = openGraphMetaTags[tagName] | |
515 | ||
516 | tagsStr += `<meta property="${tagName}" content="${tagValue}" />` | |
517 | }) | |
518 | ||
519 | // Standard | |
520 | Object.keys(standardMetaTags).forEach(tagName => { | |
521 | const tagValue = standardMetaTags[tagName] | |
522 | ||
523 | tagsStr += `<meta property="${tagName}" content="${tagValue}" />` | |
524 | }) | |
525 | ||
526 | // Twitter card | |
527 | Object.keys(twitterCardMetaTags).forEach(tagName => { | |
528 | const tagValue = twitterCardMetaTags[tagName] | |
529 | ||
530 | tagsStr += `<meta property="${tagName}" content="${tagValue}" />` | |
531 | }) | |
532 | ||
533 | // OEmbed | |
534 | for (const oembedLinkTag of oembedLinkTags) { | |
535 | tagsStr += `<link rel="alternate" type="${oembedLinkTag.type}" href="${oembedLinkTag.href}" title="${oembedLinkTag.escapedTitle}" />` | |
536 | } | |
537 | ||
538 | // Schema.org | |
539 | if (schemaTags) { | |
540 | tagsStr += `<script type="application/ld+json">${JSON.stringify(schemaTags)}</script>` | |
541 | } | |
542 | ||
543 | // SEO, use origin URL | |
544 | tagsStr += `<link rel="canonical" href="${originUrl}" />` | |
545 | ||
546 | if (disallowIndexation) { | |
547 | tagsStr += `<meta name="robots" content="noindex" />` | |
548 | } | |
549 | ||
550 | return htmlStringPage.replace(CUSTOM_HTML_TAG_COMMENTS.META_TAGS, tagsStr) | |
551 | } | |
552 | } | |
553 | ||
554 | function sendHTML (html: string, res: express.Response, localizedHTML: boolean = false) { | |
555 | res.set('Content-Type', 'text/html; charset=UTF-8') | |
556 | ||
557 | if (localizedHTML) { | |
558 | res.set('Vary', 'Accept-Language') | |
559 | } | |
560 | ||
561 | return res.send(html) | |
562 | } | |
563 | ||
564 | async function serveIndexHTML (req: express.Request, res: express.Response) { | |
565 | if (req.accepts(ACCEPT_HEADERS) === 'html' || !req.headers.accept) { | |
566 | try { | |
567 | await generateHTMLPage(req, res, req.params.language) | |
568 | return | |
569 | } catch (err) { | |
570 | logger.error('Cannot generate HTML page.', err) | |
571 | return res.status(HttpStatusCode.INTERNAL_SERVER_ERROR_500).end() | |
572 | } | |
573 | } | |
574 | ||
575 | return res.status(HttpStatusCode.NOT_ACCEPTABLE_406).end() | |
576 | } | |
577 | ||
578 | // --------------------------------------------------------------------------- | |
579 | ||
580 | export { | |
581 | ClientHtml, | |
582 | sendHTML, | |
583 | serveIndexHTML | |
584 | } | |
585 | ||
586 | async function generateHTMLPage (req: express.Request, res: express.Response, paramLang?: string) { | |
587 | const html = await ClientHtml.getDefaultHTMLPage(req, res, paramLang) | |
588 | ||
589 | return sendHTML(html, res, true) | |
590 | } |