epicyon/daemon_get_favicon.py

155 lines
6.0 KiB
Python

__filename__ = "daemon_get_favicon.py"
__author__ = "Bob Mottram"
__license__ = "AGPL3+"
__version__ = "1.5.0"
__maintainer__ = "Bob Mottram"
__email__ = "bob@libreserver.org"
__status__ = "Production"
__module_group__ = "Core GET"
import os
import urllib.parse
from fitnessFunctions import fitness_performance
from httpheaders import set_headers_etag
from httpcodes import write2
from httpcodes import http_304
from httpcodes import http_404
from daemon_utils import has_accept
from daemon_utils import etag_exists
from utils import get_config_param
from utils import media_file_mime_type
from utils import binary_is_image
def get_favicon(self, calling_domain: str,
base_dir: str, debug: bool,
fav_filename: str) -> None:
"""Return the site favicon or default newswire favicon
"""
fav_type = 'image/x-icon'
if has_accept(self, calling_domain):
if 'image/webp' in self.headers['Accept']:
fav_type = 'image/webp'
fav_filename = fav_filename.split('.')[0] + '.webp'
if 'image/avif' in self.headers['Accept']:
fav_type = 'image/avif'
fav_filename = fav_filename.split('.')[0] + '.avif'
if 'image/heic' in self.headers['Accept']:
fav_type = 'image/heic'
fav_filename = fav_filename.split('.')[0] + '.heic'
if 'image/jxl' in self.headers['Accept']:
fav_type = 'image/jxl'
fav_filename = fav_filename.split('.')[0] + '.jxl'
if not self.server.theme_name:
self.theme_name = get_config_param(base_dir, 'theme')
if not self.server.theme_name:
self.server.theme_name = 'default'
# custom favicon
favicon_filename = \
base_dir + '/theme/' + self.server.theme_name + \
'/icons/' + fav_filename
if not fav_filename.endswith('.ico'):
if not os.path.isfile(favicon_filename):
if fav_filename.endswith('.webp'):
fav_filename = fav_filename.replace('.webp', '.ico')
elif fav_filename.endswith('.avif'):
fav_filename = fav_filename.replace('.avif', '.ico')
elif fav_filename.endswith('.heic'):
fav_filename = fav_filename.replace('.heic', '.ico')
elif fav_filename.endswith('.jxl'):
fav_filename = fav_filename.replace('.jxl', '.ico')
if not os.path.isfile(favicon_filename):
# default favicon
favicon_filename = \
base_dir + '/theme/default/icons/' + fav_filename
if etag_exists(self, favicon_filename):
# The file has not changed
if debug:
print('favicon icon has not changed: ' + calling_domain)
http_304(self)
return
if self.server.iconsCache.get(fav_filename):
fav_binary = self.server.iconsCache[fav_filename]
set_headers_etag(self, favicon_filename,
fav_type,
fav_binary, None,
self.server.domain_full,
False, None)
write2(self, fav_binary)
if debug:
print('Sent favicon from cache: ' + calling_domain)
return
if os.path.isfile(favicon_filename):
fav_binary = None
try:
with open(favicon_filename, 'rb') as fav_file:
fav_binary = fav_file.read()
except OSError:
print('EX: unable to read favicon ' + favicon_filename)
if fav_binary:
set_headers_etag(self, favicon_filename,
fav_type,
fav_binary, None,
self.server.domain_full,
False, None)
write2(self, fav_binary)
self.server.iconsCache[fav_filename] = fav_binary
if debug:
print('Sent favicon from file: ' + calling_domain)
return
if debug:
print('favicon not sent: ' + calling_domain)
http_404(self, 17)
def show_cached_favicon(self, referer_domain: str, path: str,
base_dir: str, getreq_start_time) -> None:
"""Shows a favicon image obtained from the cache
"""
fav_file = path.replace('/favicons/', '')
fav_filename = base_dir + urllib.parse.unquote_plus(path)
print('showCachedFavicon: ' + fav_filename)
if self.server.favicons_cache.get(fav_file):
media_binary = self.server.favicons_cache[fav_file]
mime_type = media_file_mime_type(fav_filename)
set_headers_etag(self, fav_filename,
mime_type,
media_binary, None,
referer_domain,
False, None)
write2(self, media_binary)
fitness_performance(getreq_start_time, self.server.fitness,
'_GET', '_show_cached_favicon2',
self.server.debug)
return
if not os.path.isfile(fav_filename):
http_404(self, 44)
return
if etag_exists(self, fav_filename):
# The file has not changed
http_304(self)
return
media_binary = None
try:
with open(fav_filename, 'rb') as av_file:
media_binary = av_file.read()
except OSError:
print('EX: unable to read cached favicon ' + fav_filename)
if media_binary:
if binary_is_image(fav_filename, media_binary):
mime_type = media_file_mime_type(fav_filename)
set_headers_etag(self, fav_filename,
mime_type,
media_binary, None,
referer_domain,
False, None)
write2(self, media_binary)
fitness_performance(getreq_start_time, self.server.fitness,
'_GET', '_show_cached_favicon',
self.server.debug)
self.server.favicons_cache[fav_file] = media_binary
return
else:
print('WARN: favicon is not an image ' + fav_filename)
http_404(self, 45)