def test_is_resource_modified_for_range_requests(self):
env = create_environ()
env["HTTP_IF_MODIFIED_SINCE"] = http.http_date(datetime(2008, 1, 1, 12, 30))
env["HTTP_IF_RANGE"] = http.generate_etag(b"awesome_if_range")
# Range header not present, so If-Range should be ignored
assert not http.is_resource_modified(
env,
data=b"not_the_same",
ignore_if_range=False,
last_modified=datetime(2008, 1, 1, 12, 30),
)
env["HTTP_RANGE"] = ""
assert not http.is_resource_modified(
env, data=b"awesome_if_range", ignore_if_range=False
)
assert http.is_resource_modified(
env, data=b"not_the_same", ignore_if_range=False
)
env["HTTP_IF_RANGE"] = http.http_date(datetime(2008, 1, 1, 13, 30))
assert http.is_resource_modified(
env, last_modified=datetime(2008, 1, 1, 14, 00), ignore_if_range=False
)
assert not http.is_resource_modified(
env, last_modified=datetime(2008, 1, 1, 13, 30), ignore_if_range=False
)
assert http.is_resource_modified(
env, last_modified=datetime(2008, 1, 1, 13, 30), ignore_if_range=True
)
def test_send_file_range_request(self, app, client):
@app.route("/")
def index():
return flask.send_file("static/index.html", conditional=True)
rv = client.get("/", headers={"Range": "bytes=4-15"})
assert rv.status_code == 206
with app.open_resource("static/index.html") as f:
assert rv.data == f.read()[4:16]
rv.close()
rv = client.get("/", headers={"Range": "bytes=4-"})
assert rv.status_code == 206
with app.open_resource("static/index.html") as f:
assert rv.data == f.read()[4:]
rv.close()
rv = client.get("/", headers={"Range": "bytes=4-1000"})
assert rv.status_code == 206
with app.open_resource("static/index.html") as f:
assert rv.data == f.read()[4:]
rv.close()
rv = client.get("/", headers={"Range": "bytes=-10"})
assert rv.status_code == 206
with app.open_resource("static/index.html") as f:
assert rv.data == f.read()[-10:]
rv.close()
rv = client.get("/", headers={"Range": "bytes=1000-"})
assert rv.status_code == 416
rv.close()
rv = client.get("/", headers={"Range": "bytes=-"})
assert rv.status_code == 416
rv.close()
rv = client.get("/", headers={"Range": "somethingsomething"})
assert rv.status_code == 416
rv.close()
last_modified = datetime.datetime.utcfromtimestamp(
os.path.getmtime(os.path.join(app.root_path, "static/index.html"))
).replace(microsecond=0)
rv = client.get(
"/", headers={"Range": "bytes=4-15", "If-Range": http_date(last_modified)}
)
assert rv.status_code == 206
rv.close()
rv = client.get(
"/",
headers={
"Range": "bytes=4-15",
"If-Range": http_date(datetime.datetime(1999, 1, 1)),
},
)
assert rv.status_code == 200
rv.close()
def response_formated_records(records, collection, of, **kwargs):
"""Return formatter records.
Response contains correct Cache and TTL information in HTTP headers.
"""
response = make_response(format_records(records, collection=collection,
of=of, **kwargs))
response.mimetype = get_output_format_content_type(of)
current_time = datetime.datetime.now()
response.headers['Last-Modified'] = http_date(
time.mktime(current_time.timetuple())
)
expires = current_app.config.get(
'CFG_WEBSEARCH_SEARCH_CACHE_TIMEOUT', None)
if expires is None:
response.headers['Cache-Control'] = (
'no-store, no-cache, must-revalidate, '
'post-check=0, pre-check=0, max-age=0'
)
response.headers['Expires'] = '-1'
else:
expires_time = current_time + datetime.timedelta(seconds=expires)
response.headers['Vary'] = 'Accept'
response.headers['Cache-Control'] = (
'public' if current_user.is_guest else 'private'
)
response.headers['Expires'] = http_date(time.mktime(
expires_time.timetuple()
))
return response
def default(self, o):
"""Implement this method in a subclass such that it returns a
serializable object for ``o``, or calls the base implementation (to
raise a :exc:`TypeError`).
For example, to support arbitrary iterators, you could implement
default like this::
def default(self, o):
try:
iterable = iter(o)
except TypeError:
pass
else:
return list(iterable)
return JSONEncoder.default(self, o)
"""
if isinstance(o, datetime):
return http_date(o.utctimetuple())
if isinstance(o, date):
return http_date(o.timetuple())
if isinstance(o, uuid.UUID):
return str(o)
if hasattr(o, '__html__'):
return text_type(o.__html__())
return _json.JSONEncoder.default(self, o)
def timemap_link_response(app, mementos, uri_r):
"""Return a 200 TimeMap response.
:param mementos: A sorted (ascending by date) list of (uri_str,
datetime_obj) tuples representing a TimeMap.
:param uri_r: The URI-R of the original resource.
:return: The ``Response`` object.
"""
assert len(mementos) >= 1
# Adds Original, TimeGate and TimeMap links
original_link = Link(uri_r, rel='original')
timegate_link = Link(
url_for('timegate', dict(uri_r=uri_r), force_external=True),
rel='timegate',
)
link_self = Link(
url_for('timemap', dict(
response_type='link', uri_r=uri_r
), force_external=True),
rel='self', type='application/link-format',
)
json_self = Link(
url_for('timemap', dict(
response_type='json', uri_r=uri_r
), force_external=True),
rel='timemap', type='application/json',
)
# Sets up first and last relations
if len(mementos) == 1:
mementos_links = [Link(mementos[0][0], rel='first last memento',
datetime=http_date(mementos[0][1]))]
else:
# Browse through Mementos to generate the TimeMap links list
mementos_links = [
Link(mementos[0][0], rel='first memento',
datetime=http_date(mementos[0][1]))
] + [
Link(uri, rel='memento', datetime=http_date(date))
for (uri, date) in mementos[1:-1]
] + [
Link(mementos[-1][0], rel='last memento',
datetime=http_date(mementos[-1][1]))
]
# Aggregates all link strings and constructs the TimeMap body
links = [original_link, timegate_link, link_self, json_self]
links.extend(mementos_links)
body = ',\n'.join([str(l) for l in links]) + '\n'
# Builds HTTP Response and WSGI return
headers = [
('Date', http_date(datetime.utcnow())),
('Content-Length', str(len(body))),
('Content-Type', 'application/link-format'),
('Connection', 'close'),
]
return Response(body, headers=headers)
def test_send_file_range_request(self):
app = flask.Flask(__name__)
@app.route('/')
def index():
return flask.send_file('static/index.html', conditional=True)
c = app.test_client()
rv = c.get('/', headers={'Range': 'bytes=4-15'})
assert rv.status_code == 206
with app.open_resource('static/index.html') as f:
assert rv.data == f.read()[4:16]
rv.close()
rv = c.get('/', headers={'Range': 'bytes=4-'})
assert rv.status_code == 206
with app.open_resource('static/index.html') as f:
assert rv.data == f.read()[4:]
rv.close()
rv = c.get('/', headers={'Range': 'bytes=4-1000'})
assert rv.status_code == 206
with app.open_resource('static/index.html') as f:
assert rv.data == f.read()[4:]
rv.close()
rv = c.get('/', headers={'Range': 'bytes=-10'})
assert rv.status_code == 206
with app.open_resource('static/index.html') as f:
assert rv.data == f.read()[-10:]
rv.close()
rv = c.get('/', headers={'Range': 'bytes=1000-'})
assert rv.status_code == 416
rv.close()
rv = c.get('/', headers={'Range': 'bytes=-'})
assert rv.status_code == 416
rv.close()
rv = c.get('/', headers={'Range': 'somethingsomething'})
assert rv.status_code == 416
rv.close()
last_modified = datetime.datetime.fromtimestamp(os.path.getmtime(
os.path.join(app.root_path, 'static/index.html'))).replace(
microsecond=0)
rv = c.get('/', headers={'Range': 'bytes=4-15',
'If-Range': http_date(last_modified)})
assert rv.status_code == 206
rv.close()
rv = c.get('/', headers={'Range': 'bytes=4-15', 'If-Range': http_date(
datetime.datetime(1999, 1, 1))})
assert rv.status_code == 200
rv.close()
def timemap_json_response(app, mementos, uri_r):
"""Creates and sends a timemap response.
:param mementos: A sorted list of (uri_str, datetime_obj) tuples
representing a timemap.
:param uri_r: The URI-R of the original resource.
:param start_response: WSGI callback function.
:return: The ``Response`` object.
"""
assert len(mementos) >= 1
# Prepares the JSON response by building a dict
response_dict = {}
response_dict['original_uri'] = uri_r
response_dict['timegate_uri'] = url_for(
'timegate', dict(uri_r=uri_r), force_external=True
)
# Browse through Mementos to generate TimeMap links dict list
mementos_links = [
{'uri': urlstr, 'datetime': http_date(date)}
for (urlstr, date) in mementos
]
# Builds up first and last links dict
firstlink = {'uri': mementos[0][0], 'datetime': http_date(mementos[0][1])}
lastlink = {'uri': mementos[-1][0], 'datetime': http_date(mementos[-1][1])}
response_dict['mementos'] = {
'last': lastlink,
'first': firstlink,
'list': mementos_links,
}
# Builds self (TimeMap)links dict
response_dict['timemap_uri'] = {
'json_format': url_for('timemap', dict(
response_type='json', uri_r=uri_r
), force_external=True),
'link_format': url_for('timemap', dict(
response_type='link', uri_r=uri_r
), force_external=True),
}
# Creates the JSON str from the dict
response_json = json.dumps(response_dict)
# Builds HTTP Response and WSGI return
headers = [
('Date', http_date(datetime.utcnow())),
('Content-Length', str(len(response_json))),
('Content-Type', 'application/json'),
]
return Response(response_json, headers=headers)
def __call__(self, environ, start_response):
cleaned_path = get_path_info(environ)
if PY2:
cleaned_path = cleaned_path.encode(sys.getfilesystemencoding())
# sanitize the path for non unix systems
cleaned_path = cleaned_path.strip('/')
for sep in os.sep, os.altsep:
if sep and sep != '/':
cleaned_path = cleaned_path.replace(sep, '/')
path = '/' + '/'.join(x for x in cleaned_path.split('/')
if x and x != '..')
file_loader = None
for search_path, loader in iteritems(self.exports):
if search_path == path:
real_filename, file_loader = loader(None)
if file_loader is not None:
break
if not search_path.endswith('/'):
search_path += '/'
if path.startswith(search_path):
real_filename, file_loader = loader(path[len(search_path):])
if file_loader is not None:
break
if file_loader is None or not self.is_allowed(real_filename):
return self.app(environ, start_response)
guessed_type = mimetypes.guess_type(real_filename)
mime_type = guessed_type[0] or self.fallback_mimetype
f, mtime, file_size = file_loader()
headers = [('Date', http_date())]
if self.cache:
timeout = self.cache_timeout
etag = self.generate_etag(mtime, file_size, real_filename)
headers += [
('Etag', '"%s"' % etag),
('Cache-Control', 'max-age=%d, public' % timeout)
]
if not is_resource_modified(environ, etag, last_modified=mtime):
f.close()
start_response('304 Not Modified', headers)
return []
headers.append(('Expires', http_date(time() + timeout)))
else:
headers.append(('Cache-Control', 'public'))
headers.extend((
('Content-Type', mime_type),
('Content-Length', str(file_size)),
('Last-Modified', http_date(mtime))
))
start_response('200 OK', headers)
return wrap_file(environ, f)
def view_thread(board_name, thread_refno):
valid_id_range(thread_refno)
board: BoardModel = board_service.find_board(board_name)
if not board:
abort(404)
thread = posts_service.find_thread_by_board_thread_refno_with_posts(board, thread_refno)
if not thread:
abort(404)
additional_page_details = {
'threadRefno': thread.refno
}
if thread.locked:
additional_page_details['locked'] = True
if thread.sticky:
additional_page_details['sticky'] = True
# TODO: don't use the board id
show_mod_buttons = show_moderator_buttons(thread.board.id)
r: Response = app.make_response(render_template('thread.html', thread=thread, board=thread.board,
show_moderator_buttons=show_mod_buttons,
**get_board_view_params(board.config, 'thread', board_name,
additional_page_details)))
r.headers['Last-Modified'] = http_date(thread.last_modified / 1000)
return r
def cache():
"""Returns a 304 if an If-Modified-Since header or If-None-Match is present. Returns the same as a GET otherwise.
---
tags:
- Response inspection
parameters:
- in: header
name: If-Modified-Since
- in: header
name: If-None-Match
produces:
- application/json
responses:
200:
description: Cached response
304:
description: Modified
"""
is_conditional = request.headers.get('If-Modified-Since') or request.headers.get('If-None-Match')
if is_conditional is None:
response = view_get()
response.headers['Last-Modified'] = http_date()
response.headers['ETag'] = uuid.uuid4().hex
return response
else:
return status_code(304)
def home():
feeds = Feed.query.order_by(Feed.id.desc()).all()
return jsonify(
count=len(feeds),
feeds=[dict(id=f.id, tid=f.tid, text=f.text,
created_at=http_date(f.created_at), synced=f.synced)
for f in feeds])
def compute_etag(files=None, lastmodified=None, additional=None):
if callable(custom_etag):
try:
etag = custom_etag()
if etag:
return etag
except:
_logger.exception("Error while trying to retrieve custom ETag value for plugin {}".format(key))
if files is None:
files = collect_files()
if lastmodified is None:
lastmodified = compute_lastmodified(files)
if lastmodified and not isinstance(lastmodified, basestring):
from werkzeug.http import http_date
lastmodified = http_date(lastmodified)
if additional is None:
additional = []
import hashlib
hash = hashlib.sha1()
hash.update(octoprint.__version__)
hash.update(octoprint.server.UI_API_KEY)
hash.update(",".join(sorted(files)))
if lastmodified:
hash.update(lastmodified)
for add in additional:
hash.update(str(add))
return hash.hexdigest()
def _tag(value):
if isinstance(value, tuple):
return {" t": [_tag(x) for x in value]}
elif isinstance(value, uuid.UUID):
return {" u": value.hex}
elif isinstance(value, bytes):
return {" b": b64encode(value).decode("ascii")}
elif callable(getattr(value, "__html__", None)):
return {" m": text_type(value.__html__())}
elif isinstance(value, list):
return [_tag(x) for x in value]
elif isinstance(value, datetime):
return {" d": http_date(value)}
elif isinstance(value, dict):
return dict((k, _tag(v)) for k, v in iteritems(value))
elif isinstance(value, str):
try:
return text_type(value)
except UnicodeError:
raise UnexpectedUnicodeError(
u"A byte string with "
u"non-ASCII data was passed to the session system "
u"which can only store unicode strings. Consider "
u"base64 encoding your string (String was %r)" % value
)
return value
def default(self, obj):
if isinstance(obj, datetime):
return http_date(obj)
elif isinstance(obj, ObjectId):
return str(obj)
else:
return json.JSONEncoder.default(self, obj)
def graphite():
params = {k: request.values.getlist(k) for k in request.values.keys()}
try:
response = fetch_remote(
current_app.config['GRAPHITE_SERVER'],
method=request.method,
data=request.data,
accept=request.headers.get('Accept'),
params=params,
timeout=current_app.config['GRAPHITE_TIMEOUT']
)
headers = {'Content-Type': response.headers.get('Content-Type')}
cache_for = int(request.values.get('_cache', 0))
if cache_for > 0:
headers['Cache-Control'] = 'private, max-age=' + str(cache_for)
headers['Expires'] = http_date(datetime.now() + timedelta(seconds=cache_for))
return make_response((
response.content,
response.status_code,
headers
))
except Exception as e:
width = request.values.get('width', '400')
height = request.values.get('height', '200')
image = IMAGE_TPL.format(
error=str(e),
width=width,
height=height
)
return make_response((
image,
500,
{'Content-Type': 'image/svg+xml'}
))
def fetch_resource(resource):
'''
Gets the resource using the request library and sets the times of last successful update based on the status code.
:param resource:
:return:
'''
headers = {}
if resource.last_succ:
headers['If-Modified-Since'] = http_date(resource.last_succ)
if resource.etag:
headers["If-None-Match"] = resource.etag.encode('ascii')
resp = requests.get(resource.url, headers=headers)
resource.last_status_code = resp.status_code
resource.last_fetch = datetime.datetime.utcnow()
if resp.status_code == 200:
resource.document = resp.content
if "etag" in resp.headers:
resource.etag = resp.headers.get('etag').decode('ascii')
else:
resource.etag = None
resource.last_succ = datetime.datetime.utcnow()
resource.last_parsed = None
resource.last_parse_error = None
if resp.status_code == 304:
resource.last_succ = datetime.datetime.utcnow()
db.session.add(resource)
return resource
def _tag(value):
if isinstance(value, tuple):
return {' t': [_tag(x) for x in value]}
elif isinstance(value, uuid.UUID):
return {' u': value.hex}
elif isinstance(value, bytes):
return {' b': b64encode(value).decode('ascii')}
elif callable(getattr(value, '__html__', None)):
return {' m': text_type(value.__html__())}
elif isinstance(value, list):
return [_tag(x) for x in value]
elif isinstance(value, datetime):
return {' d': http_date(value)}
elif isinstance(value, dict):
return dict((k, _tag(v)) for k, v in iteritems(value))
elif isinstance(value, str):
try:
return text_type(value)
except UnicodeError:
from keyes.debughelpers import UnexpectedUnicodeError
raise UnexpectedUnicodeError(u'A byte string with '
u'non-ASCII data was passed to the session system '
u'which can only store unicode strings. Consider '
u'base64 encoding your string (String was %r)' % value)
return value
def decorated_controller(*args, **kwargs):
response = make_response(controller(*args, **kwargs))
response.headers['Last-Modified'] = http_date(datetime.now())
response.headers['Cache-Control'] = 'no-store, no-cache, must-revalidate, post-check=0, pre-check=0, max-age=0'
response.headers['Expires'] = 'Sat, 26 Jul 1997 05:00:00 GMT'
response.headers['Pragma'] = 'no-cache'
return response
def __call__(self, environ, start_response):
cleaned_path = get_path_info(environ)
if PY2:
cleaned_path = cleaned_path.encode(get_filesystem_encoding())
# sanitize the path for non unix systems
cleaned_path = cleaned_path.strip("/")
for sep in os.sep, os.altsep:
if sep and sep != "/":
cleaned_path = cleaned_path.replace(sep, "/")
path = "/" + "/".join(x for x in cleaned_path.split("/") if x and x != "..")
file_loader = None
for search_path, loader in iteritems(self.exports):
if search_path == path:
real_filename, file_loader = loader(None)
if file_loader is not None:
break
if not search_path.endswith("/"):
search_path += "/"
if path.startswith(search_path):
real_filename, file_loader = loader(path[len(search_path) :])
if file_loader is not None:
break
if file_loader is None or not self.is_allowed(real_filename):
return self.app(environ, start_response)
guessed_type = mimetypes.guess_type(real_filename)
mime_type = guessed_type[0] or self.fallback_mimetype
f, mtime, file_size = file_loader()
headers = [("Date", http_date())]
if self.cache:
timeout = self.cache_timeout
etag = self.generate_etag(mtime, file_size, real_filename)
headers += [("Etag", '"%s"' % etag), ("Cache-Control", "max-age=%d, public" % timeout)]
if not is_resource_modified(environ, etag, last_modified=mtime):
f.close()
start_response("304 Not Modified", headers)
return []
headers.append(("Expires", http_date(time() + timeout)))
else:
headers.append(("Cache-Control", "public"))
headers.extend(
(("Content-Type", mime_type), ("Content-Length", str(file_size)), ("Last-Modified", http_date(mtime)))
)
start_response("200 OK", headers)
return wrap_file(environ, f)
def default(self, o):
if isinstance(o, datetime.date):
return http_date(o.timetuple())
if isinstance(o, uuid.UUID):
return str(o)
if hasattr(o, '__html__'):
return text_type(o.__html__())
return _json.JSONEncoder.default(self, o)
def _conditions(self, full_path, environ):
"""Return Etag and Last-Modified values defaults to now for both."""
magic = self._match_magic(full_path)
if magic is not None:
return magic.conditions(full_path, environ)
else:
mtime = stat(full_path).st_mtime
return str(mtime), http_date(mtime)
def default(self, o):
if isinstance(o, datetime):
return http_date(o)
if isinstance(o, uuid.UUID):
return str(o)
if hasattr(o, '__html__'):
return unicode(o.__html__())
return _json.JSONEncoder.default(self, o)
def _expires_headers(self, response):
"""Applies Expires and Cache-Control headers
:param response: response to extend
:return: response
"""
h = {}
if self.expires:
if isinstance(self.expires, timedelta):
now = datetime.utcnow()
now += self.expires
h['Expires'] = http_date(now)
h['Cache-Control'] = 'max-age={seconds}'.format(seconds=int(self.expires.total_seconds()))
elif isinstance(self.expires, dt.datetime):
difference = self.expires - datetime.utcnow()
h['Expires'] = http_date(self.expires)
h['Cache-Control'] = 'max-age={seconds}'.format(seconds=difference.seconds)
response.headers.extend(h)
return response
def test_static_file_default_expires(self):
response = self.client.get("/favicon.ico")
self.assertEqual(response.status_code, httplib.OK)
with open(static_path("test_statics/favicon.ico")) as f:
self.assertEqual(response.data, f.read())
current_time = FAKE_CURRENT_TIME
extra_time = datetime.timedelta(seconds=appinfo.ParseExpiration("2d 3h"))
expired_time = current_time + extra_time
self.assertEqual(response.headers["Expires"], http.http_date(expired_time))
def to_dict(self):
return {
"id": str(self.id), "email": self.email, "username": self.username,
"nickname": self.nickname, "is_valid": self.is_valid,
"is_superadmin": self.is_superadmin,
"created_at": http_date(self.created_at),
"charts": [c.to_dict() for c in self.charts],
"dashboards": [d.to_dict() for d in self.dashboards]
}
def test_remove_entity_headers(self):
now = http.http_date()
headers1 = [('Date', now), ('Content-Type', 'text/html'), ('Content-Length', '0')]
headers2 = datastructures.Headers(headers1)
http.remove_entity_headers(headers1)
assert headers1 == [('Date', now)]
http.remove_entity_headers(headers2)
self.assert_equal(headers2, datastructures.Headers([(u'Date', now)]))
def default(self, o): # pylint: disable=method-hidden
if is_undefined(o):
return None
if isinstance(o, datetime):
return http_date(o)
if isinstance(o, uuid.UUID):
return str(o)
if hasattr(o, '__html__'):
return text_type(o.__html__())
return json.JSONEncoder.default(self, o)
def test_remove_entity_headers(self):
now = http.http_date()
headers1 = [("Date", now), ("Content-Type", "text/html"), ("Content-Length", "0")]
headers2 = datastructures.Headers(headers1)
http.remove_entity_headers(headers1)
assert headers1 == [("Date", now)]
http.remove_entity_headers(headers2)
self.assert_equal(headers2, datastructures.Headers([(u"Date", now)]))
def default(self, o):
if is_undefined(o):
return None
if isinstance(o, datetime):
return http_date(o)
if isinstance(o, uuid.UUID):
return str(o)
if hasattr(o, "__html__"):
return unicode(o.__html__())
return json.JSONEncoder.default(self, o)
def get_response(self, environ=None):
"""Get a list of headers."""
response = super(SameContentException, self).get_response(
environ=environ
)
if self.etag is not None:
response.set_etag(self.etag)
if self.last_modified is not None:
response.headers['Last-Modified'] = http_date(self.last_modified)
return response
def cache():
"""Returns a 304 if an If-Modified-Since header or If-None-Match is present. Returns the same as a GET otherwise."""
is_conditional = request.headers.get('If-Modified-Since') or request.headers.get('If-None-Match')
if is_conditional is None:
response = view_get()
response.headers['Last-Modified'] = http_date()
response.headers['ETag'] = uuid.uuid4().hex
return response
else:
return status_code(304)
def get(self, model_id):
instance = self.model.find(self.get_id(model_id))
self.check_get(instance)
modified = self.get_last_modified(instance)
headers = {'Last-Modified': http_date(modified)}
if not is_resource_modified(request.environ, last_modified=modified):
return 'Not modified', 304, headers
return self.serialize_list(self.model, [instance]), 200, headers
def test_static_file_default_expires(self):
response = self.client.get('/favicon.ico')
self.assertEqual(response.status_code, httplib.OK)
with open(static_path('test_statics/favicon.ico')) as f:
self.assertEqual(response.data, f.read())
current_time = FAKE_CURRENT_TIME
extra_time = datetime.timedelta(
seconds=appinfo.ParseExpiration('2d 3h'))
expired_time = current_time + extra_time
self.assertEqual(response.headers['Expires'],
http.http_date(expired_time))
def retry_after(self, value: t.Optional[t.Union[datetime, int,
str]]) -> None:
if value is None:
if "retry-after" in self.headers:
del self.headers["retry-after"]
return
elif isinstance(value, datetime):
value = http_date(value)
else:
value = str(value)
self.headers["Retry-After"] = value
def test_jsonify_date_types(self, app, client):
"""Test jsonify with datetime.date and datetime.datetime types."""
test_dates = (datetime.datetime(1973, 3, 11, 6, 30,
45), datetime.date(1975, 1, 5))
for i, d in enumerate(test_dates):
url = '/datetest{0}'.format(i)
app.add_url_rule(url, str(i), lambda val=d: flask.jsonify(x=val))
rv = client.get(url)
assert rv.mimetype == 'application/json'
assert flask.json.loads(rv.data)['x'] == http_date(d.timetuple())
def test_remove_entity_headers(self):
now = http.http_date()
headers1 = [('Date', now), ('Content-Type', 'text/html'),
('Content-Length', '0')]
headers2 = datastructures.Headers(headers1)
http.remove_entity_headers(headers1)
assert headers1 == [('Date', now)]
http.remove_entity_headers(headers2)
assert headers2 == datastructures.Headers([('Date', now)])
def application(environ, start_response):
"""
Small WSGI application as helper for development.
Always send the index.html without any caching. This is only used for
Crossbar's built-in web service (WSGI Host Service) to serve the
webclient.
"""
index_path = os.path.join(os.path.dirname(__file__), 'index.html')
file = open(index_path, 'rb')
mtime = datetime.utcfromtimestamp(os.path.getmtime(index_path))
file_size = int(os.path.getsize(index_path))
headers = [
('Date', http_date()),
('Cache-Control', 'public'),
('Content-Type', 'text/html'),
('Content-Length', str(file_size)),
('Last-Modified', http_date(mtime)),
]
start_response('200 OK', headers)
return wrap_file(environ, file)
def _tag(value):
if isinstance(value, tuple):
return {' t': [_tag(x) for x in value]}
elif callable(getattr(value, '__html__', None)):
return {' m': unicode(value.__html__())}
elif isinstance(value, list):
return [_tag(x) for x in value]
elif isinstance(value, datetime):
return {' d': http_date(value)}
elif isinstance(value, dict):
return dict((k, _tag(v)) for k, v in value.iteritems())
return value
def to_dict(self, summary=False):
rv = {
'source': self.source,
'source_url': self.source_url,
'date': http_date(self.pub_date),
'developer': self.developer.to_dict(summary=True)
}
if not summary:
rv['html_text'] = unicode(self.html_text)
if self.source == 'twitter':
rv['twitter_text'] = self.text
return rv
def default(self, o):
if hasattr(o, 'keys') and hasattr(o, '__getitem__'):
return dict(o)
if isinstance(o, date):
return o.strftime('%Y-%m-%d')
if isinstance(o, datetime):
return http_date(o.utctimetuple())
if isinstance(o, uuid.UUID):
return str(o)
if dataclasses and dataclasses.is_dataclass(o):
return dataclasses.asdict(o)
raise ServerError()
def __init__(self):
self.conversions = [
{
'check': lambda value: self._is_dict_with_used_key(value),
'tag': lambda value: self._tag_dict_used_with_key(value),
'untag': lambda value: self._untag_dict_used_with_key(value),
'key': ' di',
},
{
'check': lambda value: isinstance(value, tuple),
'tag': lambda value: [self._tag(x) for x in value],
'untag': lambda value: tuple(value),
'key': ' t',
},
{
'check': lambda value: isinstance(value, uuid.UUID),
'tag': lambda value: value.hex,
'untag': lambda value: uuid.UUID(value),
'key': ' u',
},
{
'check': lambda value: isinstance(value, bytes),
'tag': lambda value: b64encode(value).decode('ascii'),
'untag': lambda value: b64decode(value),
'key': ' b',
},
{
'check': lambda value: callable(getattr(value, '__html__',
None)),
'tag': lambda value: text_type(value.__html__()),
'untag': lambda value: Markup(value),
'key': ' m',
},
{
'check': lambda value: isinstance(value, list),
'tag': lambda value: [self._tag(x) for x in value],
},
{
'check': lambda value: isinstance(value, datetime),
'tag': lambda value: http_date(value),
'untag': lambda value: parse_date(value),
'key': ' d',
},
{
'check': lambda value: isinstance(value, dict),
'tag': lambda value: dict((k, self._tag(v)) for k, v in
iteritems(value)),
},
{
'check': lambda value: isinstance(value, str),
'tag': lambda value: self._tag_string(value),
}
]
def handle_subarchive_path(archivefile,
subarchivepath,
mimetype=None,
list_directory=True):
"""Show content of a path in a zip file.
"""
if not os.access(archivefile, os.R_OK):
return http_error(
403, "You do not have permission to access this file.")
try:
zip = zipfile.ZipFile(archivefile)
except:
return http_error(500, "Unable to open the ZIP file.")
try:
# KeyError is raised if subarchivepath does not exist
info = zip.getinfo(subarchivepath)
except KeyError:
# subarchivepath does not exist
# possibility a missing directory entry?
if not list_directory:
zip.close()
return http_error(404)
return handle_zip_directory_listing(zip, archivefile,
subarchivepath)
fh = zip.open(info, 'r')
lm = info.date_time
lm = int(
time.mktime((lm[0], lm[1], lm[2], lm[3], lm[4], lm[5], 0, 0, -1)))
last_modified = http_date(lm)
etag = "%s-%s-%s" % (
lm,
info.file_size,
adler32(archivefile.encode("utf-8")) & 0xFFFFFFFF,
)
headers = {
'Accept-Ranges': 'bytes',
'Cache-Control': 'no-cache',
'Last-Modified': last_modified,
'ETag': etag,
}
response = Response(fh, headers=headers, mimetype=mimetype)
response.make_conditional(request.environ,
accept_ranges=True,
complete_length=info.file_size)
return response
def cache(request):
"""Returns a 304 if an If-Modified-Since header or If-None-Match is present. Returns the same as a GET otherwise."""
is_conditional = ("If-Modified-Since" in request.headers
or "If-None-Match" in request.headers)
if is_conditional:
return status_code(304)
else:
response = view_method(request, 'get')
response.headers['Last-Modified'] = http_date()
response.headers['ETag'] = uuid.uuid4().hex
return response
def handle_zip_directory_listing(zip, archivefile, subarchivepath):
"""List contents in a directory.
"""
# ensure directory has trailing '/'
if not request.path.endswith('/'):
parts = urlsplit(request.url)
new_parts = (parts[0], parts[1], parts[2] + '/', parts[3],
parts[4])
new_url = urlunsplit(new_parts)
return redirect(new_url)
stats = os.lstat(archivefile)
last_modified = http_date(stats.st_mtime)
etag = "%s-%s-%s" % (
stats.st_mtime,
stats.st_size,
adler32(archivefile.encode("utf-8")) & 0xFFFFFFFF,
)
headers = {
'Cache-Control': 'no-cache',
}
if not is_resource_modified(
request.environ, etag=etag, last_modified=last_modified):
return http_response(status=304, headers=headers)
headers.update({
'Last-Modified': last_modified,
'ETag': etag,
})
subentries = util.zip_listdir(zip, subarchivepath)
try:
body = render_template(
'index.html',
sitename=runtime['name'],
is_local=is_local_access(),
base=request.script_root,
path=request.path,
subarchivepath=subarchivepath,
subentries=subentries,
)
zip.close()
return http_response(body, headers=headers)
except util.ZipDirNotFoundError:
# zip may not close automatically in such case
# (due to a raise in a generator?)
zip.close()
return http_error(404, "File does not exist.")
def __inject_headers(self, response):
self.__check_conditional_deductions(response)
current_limit = getattr(g, 'view_rate_limit', None)
if self.enabled and self._headers_enabled and current_limit:
try:
window_stats = self.limiter.get_window_stats(*current_limit)
reset_in = 1 + window_stats[0]
response.headers.add(self._header_mapping[HEADERS.LIMIT],
str(current_limit[0].amount))
response.headers.add(self._header_mapping[HEADERS.REMAINING],
window_stats[1])
response.headers.add(self._header_mapping[HEADERS.RESET],
reset_in)
# response may have an existing retry after
existing_retry_after_header = response.headers.get(
'Retry-After')
if existing_retry_after_header is not None:
# might be in http-date format
retry_after = parse_date(existing_retry_after_header)
# parse_date failure returns None
if retry_after is None:
retry_after = time.time() + int(
existing_retry_after_header)
if isinstance(retry_after, datetime.datetime):
retry_after = time.mktime(retry_after.timetuple())
reset_in = max(retry_after, reset_in)
# set the header instead of using add
response.headers.set(
self._header_mapping[HEADERS.RETRY_AFTER],
self._retry_after == 'http-date' and http_date(reset_in)
or int(reset_in - time.time()))
except: # noqa: E722
if self._in_memory_fallback_enabled and not self._storage_dead:
self.logger.warning(
"Rate limit storage unreachable - falling back to"
" in-memory storage")
self._storage_dead = True
response = self.__inject_headers(response)
else:
if self._swallow_errors:
self.logger.exception(
"Failed to update rate limit headers. "
"Swallowing error")
else:
six.reraise(*sys.exc_info())
return response
def test_jsonifytypes(app, client):
"""Test jsonify with datetime.date and datetime.datetime types."""
test_dates = (
datetime.datetime(1973, 3, 11, 6, 30, 45),
datetime.date(1975, 1, 5),
)
for i, d in enumerate(test_dates):
url = f"/datetest{i}"
app.add_url_rule(url, str(i), lambda val=d: flask.jsonify(x=val))
rv = client.get(url)
assert rv.mimetype == "application/json"
assert flask.json.loads(rv.data)["x"] == http_date(d.timetuple())
def download(request, oid, name=None):
obj = Object.by_oid(oid)
r = Response(obj.content, mimetype=obj.mimetype)
if name:
n = obj.name
if obj.mime.ext:
n += "." + obj.mime.ext
assert n == name
if parse_etags(request.environ.get('HTTP_IF_NONE_MATCH')).contains(
obj.hash):
r = Response("", mimetype=obj.mimetype)
r.status_code = 304
remove_entity_headers(r.headers)
else:
r = Response(obj.content, mimetype=obj.mimetype)
r.set_etag(obj.hash)
r.headers['Cache-Control'] = 'public'
r.headers['Expiry'] = http_date(datetime.utcnow() + timedelta(999))
r.headers['Last-Modified'] = http_date(obj.timestamp)
return r
def test_no_cache_conditional_default():
rv = send_file(
txt_path,
EnvironBuilder(
headers={"If-Modified-Since": http_date(datetime.datetime(2020, 7, 12))}
).get_environ(),
last_modified=datetime.datetime(2020, 7, 11),
)
rv.close()
assert "no-cache" in rv.headers["Cache-Control"]
assert not rv.cache_control.public
assert not rv.cache_control.max_age
assert not rv.expires
assert rv.status_code == 304
def test_group_server_time_limits(client, auth, test_admin, test_group):
uid, uname, upass = test_admin
response, csrf_cookie = auth.login(uname, upass)
response = client.get(
f"/admin/groups/{test_group.id}/servers/1/time_limits",
headers={"X-CSRF-Token": csrf_cookie},
)
assert 200 == response.status_code
json = response.get_json()
assert 2 == json["longest_token_life"]
assert (http_date(
(datetime.datetime.now().date() + datetime.timedelta(days=365)
).timetuple()) == json["latest_token_expiry"])
def test_remove_entity_headers(self):
now = http.http_date()
headers1 = [
("Date", now),
("Content-Type", "text/html"),
("Content-Length", "0"),
]
headers2 = datastructures.Headers(headers1)
http.remove_entity_headers(headers1)
assert headers1 == [("Date", now)]
http.remove_entity_headers(headers2)
assert headers2 == datastructures.Headers([("Date", now)])
def decorated_function(*args, **kwargs):
rv = f(*args, **kwargs)
if not "Last-Modified" in rv.headers:
result = date
if callable(result):
result = result(rv)
if not isinstance(result, basestring):
from werkzeug.http import http_date
result = http_date(result)
if result:
rv.headers["Last-Modified"] = result
return rv
def test_is_resource_modified_for_range_requests(self):
env = create_environ()
env['HTTP_IF_MODIFIED_SINCE'] = http.http_date(datetime(2008, 1, 1, 12, 30))
env['HTTP_IF_RANGE'] = http.generate_etag(b'awesome_if_range')
# Range header not present, so If-Range should be ignored
assert not http.is_resource_modified(env, data=b'not_the_same',
ignore_if_range=False,
last_modified=datetime(2008, 1, 1, 12, 30))
env['HTTP_RANGE'] = ''
assert not http.is_resource_modified(env, data=b'awesome_if_range',
ignore_if_range=False)
assert http.is_resource_modified(env, data=b'not_the_same',
ignore_if_range=False)
env['HTTP_IF_RANGE'] = http.http_date(datetime(2008, 1, 1, 13, 30))
assert http.is_resource_modified(env, last_modified=datetime(2008, 1, 1, 14, 00),
ignore_if_range=False)
assert not http.is_resource_modified(env, last_modified=datetime(2008, 1, 1, 13, 30),
ignore_if_range=False)
assert http.is_resource_modified(env, last_modified=datetime(2008, 1, 1, 13, 30),
ignore_if_range=True)
def get_attachment_thumbnail(pagename, filename, size=80):
fn = get_attachment_filename(pagename, filename)
ffn = get_attachment_full_filename(pagename, filename)
if not storage.exists(fn):
abort(404)
# TODO fetch from cache
data = None
from timeit import default_timer as timer
if data is None:
t_start = timer()
mimetype, encoding = mimetypes.guess_type(fn)
if mimetype.startswith('image'):
# read image
image = Image.open(BytesIO(storage.load(fn, mode='rb')))
# create thumbnail
image.thumbnail((size, size), resample=Image.ANTIALIAS)
options = {
'format': image.format,
'quality': 80,
}
data = BytesIO()
image.save(data, **options)
data.seek(0)
app.logger.info(
"Thumbnail generation took {:.3f} seconds.".format(timer() -
t_start))
response = make_response(send_file(data, mimetype=mimetype))
metadata = storage.metadata(fn)
# set header, caching, etc
modified = metadata['datetime']
expires = modified + timedelta(hours=1)
response.headers['Date'] = http_date(modified.utctimetuple())
response.headers['Expires'] = http_date(modified.utctimetuple())
response.headers['Last-Modified'] = http_date(modified.utctimetuple())
return response
def get_info(self, request, ident, base_uri):
r = LorisResponse()
r.set_acao(request, self.cors_regex)
try:
info, last_mod = self._get_info(ident, request, base_uri)
except ResolverException as re:
return NotFoundResponse(re.message)
except ImageInfoException as ie:
return ServerSideErrorResponse(ie.message)
except IOError as e:
# 500
msg = '%s \n(This is likely a permissions problem)' % (str(e), )
return ServerSideErrorResponse(msg)
else:
ims_hdr = request.headers.get('If-Modified-Since')
ims = parse_date(ims_hdr)
last_mod = parse_date(
http_date(last_mod)) # see note under get_img
if ims and ims >= last_mod:
logger.debug('Sent 304 for %s ' % (ident, ))
r.status_code = 304
else:
if last_mod:
r.last_modified = last_mod
# r.automatically_set_content_length
callback = request.args.get('callback', None)
if callback:
r.mimetype = 'application/javascript'
r.data = '%s(%s);' % (callback, info.to_json())
else:
if request.headers.get('accept') == 'application/ld+json':
r.content_type = 'application/ld+json'
else:
r.content_type = 'application/json'
l = '<http://iiif.io/api/image/2/context.json>;rel="http://www.w3.org/ns/json-ld#context";type="application/ld+json"'
r.headers['Link'] = '%s,%s' % (r.headers['Link'], l)
# If interpolation is not allowed, we have to remove this
# value from info.json - but only if exists (cached ImageInfo might miss this)
if self.max_size_above_full <= 100:
try:
info.profile[1]['supports'].remove('sizeAboveFull')
except ValueError:
pass
r.data = info.to_json()
finally:
return r
def default(self, o: t.Any) -> t.Any:
"""Convert ``o`` to a JSON serializable type. See
:meth:`json.JSONEncoder.default`. Python does not support
overriding how basic types like ``str`` or ``list`` are
serialized, they are handled before this method.
"""
if isinstance(o, date):
return http_date(o)
if isinstance(o, (decimal.Decimal, uuid.UUID)):
return str(o)
if dataclasses and dataclasses.is_dataclass(o):
return dataclasses.asdict(o)
if hasattr(o, "__html__"):
return str(o.__html__())
return super().default(o)
def __inject_headers(self, response):
current_limit = getattr(g, 'view_rate_limit', None)
if self.enabled and self._headers_enabled and current_limit:
window_stats = self.limiter.get_window_stats(*current_limit)
response.headers.add(self._header_mapping[HEADERS.LIMIT],
str(current_limit[0].amount))
response.headers.add(self._header_mapping[HEADERS.REMAINING],
window_stats[1])
response.headers.add(self._header_mapping[HEADERS.RESET],
window_stats[0])
response.headers.add(
self._header_mapping[HEADERS.RETRY_AFTER],
self._retry_after == 'http-date' and http_date(window_stats[0])
or int(window_stats[0] - time.time()))
return response
def ep_file(self, request, _urls, path=''):
"""Read a file via WSGI"""
# Check for unmodified requests
etag = ('%s-%08x' % (self.etag, zlib.adler32(path.encode())))
headers = [
('Date', http_date()),
('Etag', ('"%s"' % etag)),
('Cache-Control', ('max-age=%d, public' % CACHE_MAX_AGE)),
]
if not is_resource_modified(request.environ, etag,
last_modified=self.mtime):
return BaseResponse(status=304, headers=headers)
# Check for nonexistent files and for directories
isostat = self.isostat(path)
if isostat is None:
raise NotFound()
if isostat['is_dir']:
raise Forbidden()
# Construct file-like object
start = (isostat['LSN'] * pycdio.ISO_BLOCKSIZE)
size = isostat['size']
filelike = IsoFile(self.fh, start, size, self.lock)
wrapped = wrap_file(request.environ, filelike)
# Construct WSGI response
mimetype = (mimetypes.guess_type(path)[0] or 'text/plain')
headers.extend((
('Content-Length', str(size)),
('Content-Type', mimetype),
('Last-Modified', http_date(self.mtime)),
('Expires', http_date(time() + CACHE_MAX_AGE)),
))
return BaseResponse(wrapped, headers=headers, direct_passthrough=True)
def default(self, o):
"""部署这个方法是以一个子类形式实现的，这样它为 ``o`` 返回一个可序列化对象，
或者调用基础部署（会抛出一个 :exc:`TypeError` 例外类型）。
例如，要支持任意迭代器，你可以把 default 部署成如下这样::
def default(self, o):
try:
iterable = iter(o)
except TypeError:
pass
else:
return list(iterable)
return JSONEncoder.default(self, o)
"""
if isinstance(o, datetime):
return http_date(o.utctimetuple())
if isinstance(o, date):
return http_date(o.timetuple())
if isinstance(o, uuid.UUID):
return str(o)
if hasattr(o, '__html__'):
return text_type(o.__html__())
return _json.JSONEncoder.default(self, o)
def test_get_server_time_limits(client, auth, app):
# Log in first
response, csrf_cookie = auth.login("TEST_ADMIN", "DUMMY_PASSWORD")
response = client.get("/admin/servers/1/time_limits",
headers={"X-CSRF-Token": csrf_cookie})
assert 200 == response.status_code # Should get an OK
assert {
"longest_token_life":
2,
"latest_token_expiry":
http_date((datetime.datetime.now().date() +
datetime.timedelta(days=365)).timetuple()),
} == response.get_json()
def _compute_etag_for_i18n(locale, domain, files=None, lastmodified=None):
if files is None:
files = _get_all_translationfiles(locale, domain)
if lastmodified is None:
lastmodified = _compute_date(files)
if lastmodified and not isinstance(lastmodified, basestring):
from werkzeug.http import http_date
lastmodified = http_date(lastmodified)
import hashlib
hash = hashlib.sha1()
hash.update(",".join(sorted(files)))
if lastmodified:
hash.update(lastmodified)
return hash.hexdigest()
