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fix: also recognize "shortcut icon" favicon (#8220)

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* also recognize "shortcut icon" favicon

Not using querySelector for this because it uses jsdom which might be slower.
Reversing the order because WHATWG says the last appropriate link should be used.

* also fetchIconUrl

* br

* improve readability

* fix

* フォールバックにhrefの評価を含める

* fix val name

* 将来的な拡張を考えたコードにした

Co-authored-by: tamaina <tamaina@hotmail.co.jp>
Co-authored-by: syuilo <Syuilotan@yahoo.co.jp>
This commit is contained in:
Johann150 2022-02-23 12:17:43 +01:00 • committed by GitHub
parent 65be8daa15
commit bd07c7312a
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1 changed files with 12 additions and 6 deletions
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18
packages/backend/src/services/fetch-instance-metadata.ts
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@ -156,7 +156,8 @@ async function fetchFaviconUrl(instance: Instance, doc: DOMWindow['document'] |
const url = 'https://' + instance.host;
if (doc) {
const href = doc.querySelector('link[rel="icon"]')?.getAttribute('href');
// https://github.com/misskey-dev/misskey/pull/8220#issuecomment-1025104043
const href = Array.from(doc.getElementsByTagName('link')).reverse().find(link => link.relList.contains('icon'))?.href;
if (href) {
return (new URL(href, url)).href;
@ -186,11 +187,16 @@ async function fetchIconUrl(instance: Instance, doc: DOMWindow['document'] | nul
if (doc) {
const url = 'https://' + instance.host;
const hrefAppleTouchIconPrecomposed = doc.querySelector('link[rel="apple-touch-icon-precomposed"]')?.getAttribute('href');
const hrefAppleTouchIcon = doc.querySelector('link[rel="apple-touch-icon"]')?.getAttribute('href');
const hrefIcon = doc.querySelector('link[rel="icon"]')?.getAttribute('href');
const href = hrefAppleTouchIconPrecomposed || hrefAppleTouchIcon || hrefIcon;
// https://github.com/misskey-dev/misskey/pull/8220#issuecomment-1025104043
const links = Array.from(doc.getElementsByTagName('link')).reverse();
// https://github.com/misskey-dev/misskey/pull/8220/files/0ec4eba22a914e31b86874f12448f88b3e58dd5a#r796487559
const href =
[
links.find(link => link.relList.contains('apple-touch-icon-precomposed'))?.href,
links.find(link => link.relList.contains('apple-touch-icon'))?.href,
links.find(link => link.relList.contains('icon'))?.href,
]
.find(href => href);
if (href) {
return (new URL(href, url)).href;