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7ab577a1fb
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>
100 lines
3.6 KiB
Python
100 lines
3.6 KiB
Python
# SPDX-License-Identifier: AGPL-3.0-or-later
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"""Implementations of the favicon *resolvers* that are available in the favicon
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proxy by default. A *resolver* is a function that obtains the favicon from an
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external source. The *resolver* function receives two arguments (``domain,
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timeout``) and returns a tuple ``(data, mime)``.
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"""
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from __future__ import annotations
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__all__ = ["DEFAULT_RESOLVER_MAP", "allesedv", "duckduckgo", "google", "yandex"]
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from typing import Callable
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from searx import network
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from searx import logger
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DEFAULT_RESOLVER_MAP: dict[str, Callable]
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logger = logger.getChild('favicons.resolvers')
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def _req_args(**kwargs):
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# add the request arguments from the searx.network
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d = {"raise_for_httperror": False}
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d.update(kwargs)
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return d
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def allesedv(domain: str, timeout: int) -> tuple[None | bytes, None | str]:
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"""Favicon Resolver from allesedv.com / https://favicon.allesedv.com/"""
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data, mime = (None, None)
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url = f"https://f1.allesedv.com/32/{domain}"
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logger.debug("fetch favicon from: %s", url)
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# will just return a 200 regardless of the favicon existing or not
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# sometimes will be correct size, sometimes not
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response = network.get(url, **_req_args(timeout=timeout))
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if response and response.status_code == 200:
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mime = response.headers['Content-Type']
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if mime != 'image/gif':
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data = response.content
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return data, mime
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def duckduckgo(domain: str, timeout: int) -> tuple[None | bytes, None | str]:
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"""Favicon Resolver from duckduckgo.com / https://blog.jim-nielsen.com/2021/displaying-favicons-for-any-domain/"""
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data, mime = (None, None)
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url = f"https://icons.duckduckgo.com/ip2/{domain}.ico"
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logger.debug("fetch favicon from: %s", url)
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# will return a 404 if the favicon does not exist and a 200 if it does,
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response = network.get(url, **_req_args(timeout=timeout))
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if response and response.status_code == 200:
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# api will respond with a 32x32 png image
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mime = response.headers['Content-Type']
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data = response.content
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return data, mime
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def google(domain: str, timeout: int) -> tuple[None | bytes, None | str]:
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"""Favicon Resolver from google.com"""
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data, mime = (None, None)
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# URL https://www.google.com/s2/favicons?sz=32&domain={domain}" will be
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# redirected (HTTP 301 Moved Permanently) to t1.gstatic.com/faviconV2:
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url = (
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f"https://t1.gstatic.com/faviconV2?client=SOCIAL&type=FAVICON&fallback_opts=TYPE,SIZE,URL"
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f"&url=https://{domain}&size=32"
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)
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logger.debug("fetch favicon from: %s", url)
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# will return a 404 if the favicon does not exist and a 200 if it does,
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response = network.get(url, **_req_args(timeout=timeout))
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if response and response.status_code == 200:
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# api will respond with a 32x32 png image
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mime = response.headers['Content-Type']
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data = response.content
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return data, mime
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def yandex(domain: str, timeout: int) -> tuple[None | bytes, None | str]:
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"""Favicon Resolver from yandex.com"""
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data, mime = (None, None)
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url = f"https://favicon.yandex.net/favicon/{domain}"
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logger.debug("fetch favicon from: %s", url)
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# api will respond with a 16x16 png image, if it doesn't exist, it will be a
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# 1x1 png image (70 bytes)
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response = network.get(url, **_req_args(timeout=timeout))
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if response and response.status_code == 200 and len(response.content) > 70:
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mime = response.headers['Content-Type']
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data = response.content
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return data, mime
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DEFAULT_RESOLVER_MAP = {
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"allesedv": allesedv,
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"duckduckgo": duckduckgo,
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"google": google,
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"yandex": yandex,
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}
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