323 lines
9.4 KiB
Python
323 lines
9.4 KiB
Python
'''
|
|
Do not execute this file directly.
|
|
Use etiquette_flask_launch.py to start the server with gevent.
|
|
'''
|
|
import flask; from flask import request
|
|
import gzip
|
|
import io
|
|
import mimetypes
|
|
import traceback
|
|
|
|
from voussoirkit import bytestring
|
|
from voussoirkit import pathclass
|
|
|
|
import etiquette
|
|
|
|
from . import client_caching
|
|
from . import decorators
|
|
from . import jinja_filters
|
|
from . import jsonify
|
|
from . import sessions
|
|
|
|
# Flask init #######################################################################################
|
|
|
|
root_dir = pathclass.Path(__file__).parent.parent
|
|
|
|
TEMPLATE_DIR = root_dir.with_child('templates')
|
|
STATIC_DIR = root_dir.with_child('static')
|
|
FAVICON_PATH = STATIC_DIR.with_child('favicon.png')
|
|
BROWSER_CACHE_DURATION = 180
|
|
|
|
site = flask.Flask(
|
|
__name__,
|
|
template_folder=TEMPLATE_DIR.absolute_path,
|
|
static_folder=STATIC_DIR.absolute_path,
|
|
)
|
|
site.config.update(
|
|
SEND_FILE_MAX_AGE_DEFAULT=BROWSER_CACHE_DURATION,
|
|
TEMPLATES_AUTO_RELOAD=True,
|
|
)
|
|
site.jinja_env.add_extension('jinja2.ext.do')
|
|
site.jinja_env.trim_blocks = True
|
|
site.jinja_env.lstrip_blocks = True
|
|
jinja_filters.register_all(site)
|
|
site.debug = True
|
|
site.localhost_only = False
|
|
|
|
session_manager = sessions.SessionManager(maxlen=10000)
|
|
file_etag_manager = client_caching.FileEtagManager(
|
|
maxlen=10000,
|
|
max_filesize=5 * bytestring.MIBIBYTE,
|
|
max_age=BROWSER_CACHE_DURATION,
|
|
)
|
|
|
|
# Response wrappers ################################################################################
|
|
|
|
# Flask provides decorators for before_request and after_request, but not for
|
|
# wrapping the whole request. The decorators I am using need to wrap the whole
|
|
# request, either to catch exceptions (which don't get passed through
|
|
# after_request) or to maintain some state before running the function and
|
|
# adding it to the response after.
|
|
# Instead of copy-pasting my decorators onto every single function and
|
|
# forgetting to keep up with them in the future, let's just hijack the
|
|
# decorator I know every endpoint will have: site.route.
|
|
_original_route = site.route
|
|
def decorate_and_route(*route_args, **route_kwargs):
|
|
def wrapper(endpoint):
|
|
# Since a function might have multiple routes, we may be seeing the
|
|
# same one multiple times. The _fully_decorated will track that.
|
|
if not hasattr(endpoint, '_fully_decorated'):
|
|
endpoint = decorators.catch_etiquette_exception(endpoint)
|
|
endpoint = session_manager.give_token(endpoint)
|
|
|
|
endpoint = _original_route(*route_args, **route_kwargs)(endpoint)
|
|
endpoint._fully_decorated = True
|
|
return endpoint
|
|
return wrapper
|
|
site.route = decorate_and_route
|
|
|
|
@site.before_request
|
|
def before_request():
|
|
ip = request.remote_addr
|
|
if site.localhost_only and ip != '127.0.0.1':
|
|
flask.abort(403)
|
|
|
|
gzip_minimum_size = 500 * bytestring.BYTE
|
|
gzip_maximum_size = 5 * bytestring.MIBIBYTE
|
|
gzip_level = 3
|
|
def should_gzip(response):
|
|
if response.direct_passthrough:
|
|
return False
|
|
|
|
if response.status_code < 200:
|
|
return False
|
|
|
|
if response.status_code >= 300:
|
|
return False
|
|
|
|
content_length = response.headers.get('Content-Length', None)
|
|
if content_length is not None and int(content_length) > gzip_maximum_size:
|
|
return False
|
|
|
|
if content_length is not None and int(content_length) < gzip_minimum_size:
|
|
return False
|
|
|
|
if 'Content-Encoding' in response.headers:
|
|
return False
|
|
|
|
accept_encoding = request.headers.get('Accept-Encoding', '')
|
|
if 'gzip' not in accept_encoding.lower():
|
|
return False
|
|
|
|
content_type = response.headers.get('Content-Type', '')
|
|
if not (content_type.startswith('application/json') or content_type.startswith('text/')):
|
|
return False
|
|
|
|
return True
|
|
|
|
@site.after_request
|
|
def after_request(response):
|
|
if not should_gzip(response):
|
|
return response
|
|
|
|
###
|
|
|
|
gzip_buffer = io.BytesIO()
|
|
gzip_file = gzip.GzipFile(mode='wb', compresslevel=gzip_level, fileobj=gzip_buffer)
|
|
gzip_file.write(response.get_data())
|
|
gzip_file.close()
|
|
response.set_data(gzip_buffer.getvalue())
|
|
response.headers['Content-Encoding'] = 'gzip'
|
|
response.headers['Content-Length'] = len(response.get_data())
|
|
|
|
return response
|
|
|
|
# P functions ######################################################################################
|
|
|
|
def P_wrapper(function):
|
|
def P_wrapped(thingid, response_type):
|
|
if response_type not in {'html', 'json'}:
|
|
raise TypeError(f'response_type should be html or json, not {response_type}.')
|
|
|
|
try:
|
|
return function(thingid)
|
|
|
|
except etiquette.exceptions.EtiquetteException as exc:
|
|
if isinstance(exc, etiquette.exceptions.NoSuch):
|
|
status = 404
|
|
else:
|
|
status = 400
|
|
|
|
if response_type == 'html':
|
|
flask.abort(status, exc.error_message)
|
|
else:
|
|
response = exc.jsonify()
|
|
response = jsonify.make_json_response(response, status=status)
|
|
flask.abort(response)
|
|
|
|
except Exception as exc:
|
|
traceback.print_exc()
|
|
if response_type == 'html':
|
|
flask.abort(500)
|
|
else:
|
|
flask.abort(jsonify.make_json_response({}, status=500))
|
|
|
|
return P_wrapped
|
|
|
|
@P_wrapper
|
|
def P_album(album_id):
|
|
return P.get_album(album_id)
|
|
|
|
@P_wrapper
|
|
def P_albums(album_ids):
|
|
return P.get_albums_by_id(album_ids)
|
|
|
|
@P_wrapper
|
|
def P_bookmark(bookmark_id):
|
|
return P.get_bookmark(bookmark_id)
|
|
|
|
@P_wrapper
|
|
def P_photo(photo_id):
|
|
return P.get_photo(photo_id)
|
|
|
|
@P_wrapper
|
|
def P_photos(photo_ids):
|
|
return P.get_photos_by_id(photo_ids)
|
|
|
|
@P_wrapper
|
|
def P_tag(tagname):
|
|
return P.get_tag(name=tagname)
|
|
|
|
@P_wrapper
|
|
def P_tag_id(tag_id):
|
|
return P.get_tag(id=tag_id)
|
|
|
|
@P_wrapper
|
|
def P_user(username):
|
|
return P.get_user(username=username)
|
|
|
|
@P_wrapper
|
|
def P_user_id(user_id):
|
|
return P.get_user(id=user_id)
|
|
|
|
# Other functions ##################################################################################
|
|
|
|
def back_url():
|
|
return request.args.get('goto') or request.referrer or '/'
|
|
|
|
def render_template(request, template_name, **kwargs):
|
|
session = session_manager.get(request)
|
|
|
|
old_theme = request.cookies.get('etiquette_theme', None)
|
|
new_theme = request.args.get('theme', None)
|
|
theme = new_theme or old_theme or 'slate'
|
|
|
|
response = flask.render_template(
|
|
template_name,
|
|
session=session,
|
|
theme=theme,
|
|
**kwargs,
|
|
)
|
|
|
|
if not isinstance(response, sessions.RESPONSE_TYPES):
|
|
response = flask.Response(response)
|
|
|
|
if new_theme is None:
|
|
pass
|
|
elif new_theme == '':
|
|
response.set_cookie('etiquette_theme', value='', expires=0)
|
|
elif new_theme != old_theme:
|
|
response.set_cookie('etiquette_theme', value=new_theme, expires=2147483647)
|
|
|
|
return response
|
|
|
|
def send_file(filepath, override_mimetype=None):
|
|
'''
|
|
Range-enabled file sending.
|
|
'''
|
|
filepath = pathclass.Path(filepath)
|
|
|
|
if not filepath.is_file:
|
|
flask.abort(404)
|
|
|
|
file_size = filepath.size
|
|
|
|
headers = file_etag_manager.get_304_headers(request=request, filepath=filepath)
|
|
if headers:
|
|
response = flask.Response(status=304, headers=headers)
|
|
return response
|
|
|
|
outgoing_headers = {}
|
|
if override_mimetype is not None:
|
|
mimetype = override_mimetype
|
|
else:
|
|
mimetype = mimetypes.guess_type(filepath.absolute_path)[0]
|
|
|
|
if mimetype is not None:
|
|
if 'text/' in mimetype:
|
|
mimetype += '; charset=utf-8'
|
|
outgoing_headers['Content-Type'] = mimetype
|
|
|
|
if 'range' in request.headers:
|
|
desired_range = request.headers['range'].lower()
|
|
desired_range = desired_range.split('bytes=')[-1]
|
|
|
|
int_helper = lambda x: int(x) if x.isdigit() else None
|
|
if '-' in desired_range:
|
|
(desired_min, desired_max) = desired_range.split('-')
|
|
range_min = int_helper(desired_min)
|
|
range_max = int_helper(desired_max)
|
|
else:
|
|
range_min = int_helper(desired_range)
|
|
range_max = None
|
|
|
|
if range_min is None:
|
|
range_min = 0
|
|
if range_max is None:
|
|
range_max = file_size
|
|
|
|
# because ranges are 0-indexed
|
|
range_max = min(range_max, file_size - 1)
|
|
range_min = max(range_min, 0)
|
|
|
|
range_header = 'bytes {min}-{max}/{outof}'.format(
|
|
min=range_min,
|
|
max=range_max,
|
|
outof=file_size,
|
|
)
|
|
outgoing_headers['Content-Range'] = range_header
|
|
status = 206
|
|
else:
|
|
range_max = file_size - 1
|
|
range_min = 0
|
|
status = 200
|
|
|
|
outgoing_headers['Accept-Ranges'] = 'bytes'
|
|
outgoing_headers['Content-Length'] = (range_max - range_min) + 1
|
|
|
|
file_etag = file_etag_manager.get_file(filepath)
|
|
if file_etag is not None:
|
|
outgoing_headers.update(file_etag.get_headers())
|
|
|
|
if request.method == 'HEAD':
|
|
outgoing_data = bytes()
|
|
else:
|
|
outgoing_data = etiquette.helpers.read_filebytes(
|
|
filepath.absolute_path,
|
|
range_min=range_min,
|
|
range_max=range_max,
|
|
chunk_size=P.config['file_read_chunk'],
|
|
)
|
|
|
|
response = flask.Response(
|
|
outgoing_data,
|
|
status=status,
|
|
headers=outgoing_headers,
|
|
)
|
|
return response
|
|
|
|
####################################################################################################
|
|
|
|
def init_photodb(*args, **kwargs):
|
|
global P
|
|
P = etiquette.photodb.PhotoDB(*args, **kwargs)
|