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[mod] Revision of the favicon solution

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All favicons implementations have been documented and moved to the Python
package:

    searx.favicons

There is a configuration (based on Pydantic) for the favicons and all its
components:

    searx.favicons.config

A solution for caching favicons has been implemented:

    searx.favicon.cache

If the favicon is already in the cache, the returned URL is a data URL [1]
(something like `data:image/png;base64,...`).  By generating a data url from
the FaviconCache, additional HTTP roundtripps via the favicon_proxy are saved:

    favicons.proxy.favicon_url

The favicon proxy service now sets a HTTP header "Cache-Control: max-age=...":

    favicons.proxy.favicon_proxy

The resolvers now also provide the mime type (data, mime):

    searx.favicon.resolvers

[1] https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/Data_URLs

Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
This commit is contained in:
Markus Heiser 2024-08-19 17:47:54 +02:00 • committed by Markus Heiser
parent c49a2707c1
commit 7ab577a1fb
21 changed files with 1039 additions and 181 deletions
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4
searx/preferences.py
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@ -13,7 +13,7 @@ from collections import OrderedDict
import flask
import babel
from searx import settings, autocomplete, favicon_resolver
from searx import settings, autocomplete, favicons
from searx.enginelib import Engine
from searx.plugins import Plugin
from searx.locales import LOCALE_NAMES
@ -409,7 +409,7 @@ class Preferences:
'favicon_resolver': EnumStringSetting(
settings['search']['favicon_resolver'],
locked=is_locked('favicon_resolver'),
choices=list(favicon_resolver.backends.keys()) + ['']
choices=list(favicons.proxy.CFG.resolver_map.keys()) + ['']
),
'image_proxy': BooleanSetting(
settings['server']['image_proxy'],