bbf6d9b026
Bugfix for feeds
- removed categories related and up
- load new books now working
- category random now working
login page is free of non accessible elements
boolean custom column is vivible in UI
books with only with certain languages can be shown
book shelfs can be deleted from UI
Anonymous user view is more resticted
Added browse of series in sidebar
Dependencys in vendor folder are updated to newer versions (licencs files are now present)
Bugfix editing Authors names
Made upload on windows working
902 lines
28 KiB
Python
902 lines
28 KiB
Python
#!/usr/bin/env python
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#
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# Copyright 2009 Facebook
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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"""HTTP utility code shared by clients and servers.
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This module also defines the `HTTPServerRequest` class which is exposed
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via `tornado.web.RequestHandler.request`.
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"""
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from __future__ import absolute_import, division, print_function, with_statement
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import calendar
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import collections
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import copy
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import datetime
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import email.utils
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import numbers
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import re
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import time
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from tornado.escape import native_str, parse_qs_bytes, utf8
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from tornado.log import gen_log
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from tornado.util import ObjectDict
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try:
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import Cookie # py2
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except ImportError:
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import http.cookies as Cookie # py3
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try:
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from httplib import responses # py2
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except ImportError:
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from http.client import responses # py3
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# responses is unused in this file, but we re-export it to other files.
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# Reference it so pyflakes doesn't complain.
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responses
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try:
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from urllib import urlencode # py2
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except ImportError:
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from urllib.parse import urlencode # py3
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try:
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from ssl import SSLError
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except ImportError:
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# ssl is unavailable on app engine.
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class SSLError(Exception):
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pass
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# RFC 7230 section 3.5: a recipient MAY recognize a single LF as a line
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# terminator and ignore any preceding CR.
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_CRLF_RE = re.compile(r'\r?\n')
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class _NormalizedHeaderCache(dict):
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"""Dynamic cached mapping of header names to Http-Header-Case.
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Implemented as a dict subclass so that cache hits are as fast as a
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normal dict lookup, without the overhead of a python function
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call.
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>>> normalized_headers = _NormalizedHeaderCache(10)
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>>> normalized_headers["coNtent-TYPE"]
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'Content-Type'
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"""
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def __init__(self, size):
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super(_NormalizedHeaderCache, self).__init__()
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self.size = size
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self.queue = collections.deque()
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def __missing__(self, key):
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normalized = "-".join([w.capitalize() for w in key.split("-")])
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self[key] = normalized
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self.queue.append(key)
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if len(self.queue) > self.size:
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# Limit the size of the cache. LRU would be better, but this
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# simpler approach should be fine. In Python 2.7+ we could
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# use OrderedDict (or in 3.2+, @functools.lru_cache).
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old_key = self.queue.popleft()
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del self[old_key]
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return normalized
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_normalized_headers = _NormalizedHeaderCache(1000)
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class HTTPHeaders(dict):
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"""A dictionary that maintains ``Http-Header-Case`` for all keys.
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Supports multiple values per key via a pair of new methods,
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`add()` and `get_list()`. The regular dictionary interface
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returns a single value per key, with multiple values joined by a
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comma.
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>>> h = HTTPHeaders({"content-type": "text/html"})
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>>> list(h.keys())
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['Content-Type']
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>>> h["Content-Type"]
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'text/html'
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>>> h.add("Set-Cookie", "A=B")
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>>> h.add("Set-Cookie", "C=D")
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>>> h["set-cookie"]
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'A=B,C=D'
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>>> h.get_list("set-cookie")
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['A=B', 'C=D']
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>>> for (k,v) in sorted(h.get_all()):
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... print('%s: %s' % (k,v))
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...
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Content-Type: text/html
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Set-Cookie: A=B
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Set-Cookie: C=D
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"""
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def __init__(self, *args, **kwargs):
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# Don't pass args or kwargs to dict.__init__, as it will bypass
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# our __setitem__
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dict.__init__(self)
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self._as_list = {}
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self._last_key = None
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if (len(args) == 1 and len(kwargs) == 0 and
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isinstance(args[0], HTTPHeaders)):
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# Copy constructor
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for k, v in args[0].get_all():
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self.add(k, v)
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else:
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# Dict-style initialization
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self.update(*args, **kwargs)
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# new public methods
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def add(self, name, value):
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"""Adds a new value for the given key."""
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norm_name = _normalized_headers[name]
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self._last_key = norm_name
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if norm_name in self:
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# bypass our override of __setitem__ since it modifies _as_list
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dict.__setitem__(self, norm_name,
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native_str(self[norm_name]) + ',' +
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native_str(value))
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self._as_list[norm_name].append(value)
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else:
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self[norm_name] = value
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def get_list(self, name):
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"""Returns all values for the given header as a list."""
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norm_name = _normalized_headers[name]
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return self._as_list.get(norm_name, [])
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def get_all(self):
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"""Returns an iterable of all (name, value) pairs.
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If a header has multiple values, multiple pairs will be
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returned with the same name.
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"""
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for name, values in self._as_list.items():
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for value in values:
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yield (name, value)
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def parse_line(self, line):
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"""Updates the dictionary with a single header line.
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>>> h = HTTPHeaders()
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>>> h.parse_line("Content-Type: text/html")
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>>> h.get('content-type')
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'text/html'
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"""
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if line[0].isspace():
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# continuation of a multi-line header
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new_part = ' ' + line.lstrip()
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self._as_list[self._last_key][-1] += new_part
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dict.__setitem__(self, self._last_key,
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self[self._last_key] + new_part)
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else:
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name, value = line.split(":", 1)
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self.add(name, value.strip())
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@classmethod
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def parse(cls, headers):
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"""Returns a dictionary from HTTP header text.
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>>> h = HTTPHeaders.parse("Content-Type: text/html\\r\\nContent-Length: 42\\r\\n")
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>>> sorted(h.items())
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[('Content-Length', '42'), ('Content-Type', 'text/html')]
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"""
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h = cls()
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for line in _CRLF_RE.split(headers):
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if line:
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h.parse_line(line)
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return h
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# dict implementation overrides
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def __setitem__(self, name, value):
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norm_name = _normalized_headers[name]
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dict.__setitem__(self, norm_name, value)
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self._as_list[norm_name] = [value]
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def __getitem__(self, name):
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return dict.__getitem__(self, _normalized_headers[name])
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def __delitem__(self, name):
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norm_name = _normalized_headers[name]
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dict.__delitem__(self, norm_name)
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del self._as_list[norm_name]
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def __contains__(self, name):
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norm_name = _normalized_headers[name]
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return dict.__contains__(self, norm_name)
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def get(self, name, default=None):
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return dict.get(self, _normalized_headers[name], default)
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def update(self, *args, **kwargs):
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# dict.update bypasses our __setitem__
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for k, v in dict(*args, **kwargs).items():
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self[k] = v
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def copy(self):
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# default implementation returns dict(self), not the subclass
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return HTTPHeaders(self)
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class HTTPServerRequest(object):
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"""A single HTTP request.
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All attributes are type `str` unless otherwise noted.
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.. attribute:: method
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HTTP request method, e.g. "GET" or "POST"
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.. attribute:: uri
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The requested uri.
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.. attribute:: path
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The path portion of `uri`
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.. attribute:: query
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The query portion of `uri`
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.. attribute:: version
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HTTP version specified in request, e.g. "HTTP/1.1"
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.. attribute:: headers
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`.HTTPHeaders` dictionary-like object for request headers. Acts like
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a case-insensitive dictionary with additional methods for repeated
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headers.
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.. attribute:: body
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Request body, if present, as a byte string.
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.. attribute:: remote_ip
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Client's IP address as a string. If ``HTTPServer.xheaders`` is set,
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will pass along the real IP address provided by a load balancer
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in the ``X-Real-Ip`` or ``X-Forwarded-For`` header.
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.. versionchanged:: 3.1
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The list format of ``X-Forwarded-For`` is now supported.
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.. attribute:: protocol
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The protocol used, either "http" or "https". If ``HTTPServer.xheaders``
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is set, will pass along the protocol used by a load balancer if
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reported via an ``X-Scheme`` header.
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.. attribute:: host
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The requested hostname, usually taken from the ``Host`` header.
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.. attribute:: arguments
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GET/POST arguments are available in the arguments property, which
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maps arguments names to lists of values (to support multiple values
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for individual names). Names are of type `str`, while arguments
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are byte strings. Note that this is different from
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`.RequestHandler.get_argument`, which returns argument values as
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unicode strings.
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.. attribute:: query_arguments
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Same format as ``arguments``, but contains only arguments extracted
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from the query string.
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.. versionadded:: 3.2
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.. attribute:: body_arguments
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Same format as ``arguments``, but contains only arguments extracted
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from the request body.
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.. versionadded:: 3.2
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.. attribute:: files
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File uploads are available in the files property, which maps file
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names to lists of `.HTTPFile`.
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.. attribute:: connection
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An HTTP request is attached to a single HTTP connection, which can
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be accessed through the "connection" attribute. Since connections
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are typically kept open in HTTP/1.1, multiple requests can be handled
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sequentially on a single connection.
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.. versionchanged:: 4.0
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Moved from ``tornado.httpserver.HTTPRequest``.
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"""
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def __init__(self, method=None, uri=None, version="HTTP/1.0", headers=None,
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body=None, host=None, files=None, connection=None,
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start_line=None):
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if start_line is not None:
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method, uri, version = start_line
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self.method = method
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self.uri = uri
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self.version = version
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self.headers = headers or HTTPHeaders()
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self.body = body or b""
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# set remote IP and protocol
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context = getattr(connection, 'context', None)
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self.remote_ip = getattr(context, 'remote_ip', None)
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self.protocol = getattr(context, 'protocol', "http")
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self.host = host or self.headers.get("Host") or "127.0.0.1"
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self.files = files or {}
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self.connection = connection
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self._start_time = time.time()
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self._finish_time = None
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self.path, sep, self.query = uri.partition('?')
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self.arguments = parse_qs_bytes(self.query, keep_blank_values=True)
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self.query_arguments = copy.deepcopy(self.arguments)
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self.body_arguments = {}
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def supports_http_1_1(self):
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"""Returns True if this request supports HTTP/1.1 semantics.
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.. deprecated:: 4.0
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Applications are less likely to need this information with the
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introduction of `.HTTPConnection`. If you still need it, access
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the ``version`` attribute directly.
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"""
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return self.version == "HTTP/1.1"
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@property
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def cookies(self):
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"""A dictionary of Cookie.Morsel objects."""
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if not hasattr(self, "_cookies"):
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self._cookies = Cookie.SimpleCookie()
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if "Cookie" in self.headers:
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try:
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self._cookies.load(
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native_str(self.headers["Cookie"]))
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except Exception:
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self._cookies = {}
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return self._cookies
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def write(self, chunk, callback=None):
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"""Writes the given chunk to the response stream.
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.. deprecated:: 4.0
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Use ``request.connection`` and the `.HTTPConnection` methods
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to write the response.
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"""
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assert isinstance(chunk, bytes)
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self.connection.write(chunk, callback=callback)
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def finish(self):
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"""Finishes this HTTP request on the open connection.
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.. deprecated:: 4.0
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Use ``request.connection`` and the `.HTTPConnection` methods
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to write the response.
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"""
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self.connection.finish()
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self._finish_time = time.time()
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def full_url(self):
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"""Reconstructs the full URL for this request."""
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return self.protocol + "://" + self.host + self.uri
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def request_time(self):
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"""Returns the amount of time it took for this request to execute."""
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if self._finish_time is None:
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return time.time() - self._start_time
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else:
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return self._finish_time - self._start_time
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def get_ssl_certificate(self, binary_form=False):
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"""Returns the client's SSL certificate, if any.
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To use client certificates, the HTTPServer must have been constructed
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with cert_reqs set in ssl_options, e.g.::
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server = HTTPServer(app,
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ssl_options=dict(
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certfile="foo.crt",
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keyfile="foo.key",
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cert_reqs=ssl.CERT_REQUIRED,
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ca_certs="cacert.crt"))
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By default, the return value is a dictionary (or None, if no
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client certificate is present). If ``binary_form`` is true, a
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DER-encoded form of the certificate is returned instead. See
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SSLSocket.getpeercert() in the standard library for more
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details.
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http://docs.python.org/library/ssl.html#sslsocket-objects
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"""
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try:
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return self.connection.stream.socket.getpeercert(
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binary_form=binary_form)
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except SSLError:
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return None
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def _parse_body(self):
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parse_body_arguments(
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self.headers.get("Content-Type", ""), self.body,
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self.body_arguments, self.files,
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self.headers)
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for k, v in self.body_arguments.items():
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self.arguments.setdefault(k, []).extend(v)
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def __repr__(self):
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attrs = ("protocol", "host", "method", "uri", "version", "remote_ip")
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args = ", ".join(["%s=%r" % (n, getattr(self, n)) for n in attrs])
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return "%s(%s, headers=%s)" % (
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self.__class__.__name__, args, dict(self.headers))
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class HTTPInputError(Exception):
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"""Exception class for malformed HTTP requests or responses
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from remote sources.
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.. versionadded:: 4.0
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"""
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pass
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class HTTPOutputError(Exception):
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"""Exception class for errors in HTTP output.
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.. versionadded:: 4.0
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"""
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pass
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class HTTPServerConnectionDelegate(object):
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"""Implement this interface to handle requests from `.HTTPServer`.
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.. versionadded:: 4.0
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"""
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def start_request(self, server_conn, request_conn):
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"""This method is called by the server when a new request has started.
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:arg server_conn: is an opaque object representing the long-lived
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(e.g. tcp-level) connection.
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:arg request_conn: is a `.HTTPConnection` object for a single
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request/response exchange.
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This method should return a `.HTTPMessageDelegate`.
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"""
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raise NotImplementedError()
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def on_close(self, server_conn):
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"""This method is called when a connection has been closed.
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:arg server_conn: is a server connection that has previously been
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passed to ``start_request``.
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"""
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pass
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class HTTPMessageDelegate(object):
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"""Implement this interface to handle an HTTP request or response.
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.. versionadded:: 4.0
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"""
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def headers_received(self, start_line, headers):
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"""Called when the HTTP headers have been received and parsed.
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:arg start_line: a `.RequestStartLine` or `.ResponseStartLine`
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depending on whether this is a client or server message.
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:arg headers: a `.HTTPHeaders` instance.
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Some `.HTTPConnection` methods can only be called during
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``headers_received``.
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May return a `.Future`; if it does the body will not be read
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until it is done.
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"""
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pass
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def data_received(self, chunk):
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"""Called when a chunk of data has been received.
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May return a `.Future` for flow control.
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"""
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pass
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def finish(self):
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"""Called after the last chunk of data has been received."""
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pass
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def on_connection_close(self):
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"""Called if the connection is closed without finishing the request.
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If ``headers_received`` is called, either ``finish`` or
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``on_connection_close`` will be called, but not both.
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"""
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pass
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class HTTPConnection(object):
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"""Applications use this interface to write their responses.
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.. versionadded:: 4.0
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"""
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def write_headers(self, start_line, headers, chunk=None, callback=None):
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"""Write an HTTP header block.
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:arg start_line: a `.RequestStartLine` or `.ResponseStartLine`.
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:arg headers: a `.HTTPHeaders` instance.
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:arg chunk: the first (optional) chunk of data. This is an optimization
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so that small responses can be written in the same call as their
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headers.
|
|
:arg callback: a callback to be run when the write is complete.
|
|
|
|
The ``version`` field of ``start_line`` is ignored.
|
|
|
|
Returns a `.Future` if no callback is given.
|
|
"""
|
|
raise NotImplementedError()
|
|
|
|
def write(self, chunk, callback=None):
|
|
"""Writes a chunk of body data.
|
|
|
|
The callback will be run when the write is complete. If no callback
|
|
is given, returns a Future.
|
|
"""
|
|
raise NotImplementedError()
|
|
|
|
def finish(self):
|
|
"""Indicates that the last body data has been written.
|
|
"""
|
|
raise NotImplementedError()
|
|
|
|
|
|
def url_concat(url, args):
|
|
"""Concatenate url and arguments regardless of whether
|
|
url has existing query parameters.
|
|
|
|
``args`` may be either a dictionary or a list of key-value pairs
|
|
(the latter allows for multiple values with the same key.
|
|
|
|
>>> url_concat("http://example.com/foo", dict(c="d"))
|
|
'http://example.com/foo?c=d'
|
|
>>> url_concat("http://example.com/foo?a=b", dict(c="d"))
|
|
'http://example.com/foo?a=b&c=d'
|
|
>>> url_concat("http://example.com/foo?a=b", [("c", "d"), ("c", "d2")])
|
|
'http://example.com/foo?a=b&c=d&c=d2'
|
|
"""
|
|
if not args:
|
|
return url
|
|
if url[-1] not in ('?', '&'):
|
|
url += '&' if ('?' in url) else '?'
|
|
return url + urlencode(args)
|
|
|
|
|
|
class HTTPFile(ObjectDict):
|
|
"""Represents a file uploaded via a form.
|
|
|
|
For backwards compatibility, its instance attributes are also
|
|
accessible as dictionary keys.
|
|
|
|
* ``filename``
|
|
* ``body``
|
|
* ``content_type``
|
|
"""
|
|
pass
|
|
|
|
|
|
def _parse_request_range(range_header):
|
|
"""Parses a Range header.
|
|
|
|
Returns either ``None`` or tuple ``(start, end)``.
|
|
Note that while the HTTP headers use inclusive byte positions,
|
|
this method returns indexes suitable for use in slices.
|
|
|
|
>>> start, end = _parse_request_range("bytes=1-2")
|
|
>>> start, end
|
|
(1, 3)
|
|
>>> [0, 1, 2, 3, 4][start:end]
|
|
[1, 2]
|
|
>>> _parse_request_range("bytes=6-")
|
|
(6, None)
|
|
>>> _parse_request_range("bytes=-6")
|
|
(-6, None)
|
|
>>> _parse_request_range("bytes=-0")
|
|
(None, 0)
|
|
>>> _parse_request_range("bytes=")
|
|
(None, None)
|
|
>>> _parse_request_range("foo=42")
|
|
>>> _parse_request_range("bytes=1-2,6-10")
|
|
|
|
Note: only supports one range (ex, ``bytes=1-2,6-10`` is not allowed).
|
|
|
|
See [0] for the details of the range header.
|
|
|
|
[0]: http://greenbytes.de/tech/webdav/draft-ietf-httpbis-p5-range-latest.html#byte.ranges
|
|
"""
|
|
unit, _, value = range_header.partition("=")
|
|
unit, value = unit.strip(), value.strip()
|
|
if unit != "bytes":
|
|
return None
|
|
start_b, _, end_b = value.partition("-")
|
|
try:
|
|
start = _int_or_none(start_b)
|
|
end = _int_or_none(end_b)
|
|
except ValueError:
|
|
return None
|
|
if end is not None:
|
|
if start is None:
|
|
if end != 0:
|
|
start = -end
|
|
end = None
|
|
else:
|
|
end += 1
|
|
return (start, end)
|
|
|
|
|
|
def _get_content_range(start, end, total):
|
|
"""Returns a suitable Content-Range header:
|
|
|
|
>>> print(_get_content_range(None, 1, 4))
|
|
bytes 0-0/4
|
|
>>> print(_get_content_range(1, 3, 4))
|
|
bytes 1-2/4
|
|
>>> print(_get_content_range(None, None, 4))
|
|
bytes 0-3/4
|
|
"""
|
|
start = start or 0
|
|
end = (end or total) - 1
|
|
return "bytes %s-%s/%s" % (start, end, total)
|
|
|
|
|
|
def _int_or_none(val):
|
|
val = val.strip()
|
|
if val == "":
|
|
return None
|
|
return int(val)
|
|
|
|
|
|
def parse_body_arguments(content_type, body, arguments, files, headers=None):
|
|
"""Parses a form request body.
|
|
|
|
Supports ``application/x-www-form-urlencoded`` and
|
|
``multipart/form-data``. The ``content_type`` parameter should be
|
|
a string and ``body`` should be a byte string. The ``arguments``
|
|
and ``files`` parameters are dictionaries that will be updated
|
|
with the parsed contents.
|
|
"""
|
|
if headers and 'Content-Encoding' in headers:
|
|
gen_log.warning("Unsupported Content-Encoding: %s",
|
|
headers['Content-Encoding'])
|
|
return
|
|
if content_type.startswith("application/x-www-form-urlencoded"):
|
|
try:
|
|
uri_arguments = parse_qs_bytes(native_str(body), keep_blank_values=True)
|
|
except Exception as e:
|
|
gen_log.warning('Invalid x-www-form-urlencoded body: %s', e)
|
|
uri_arguments = {}
|
|
for name, values in uri_arguments.items():
|
|
if values:
|
|
arguments.setdefault(name, []).extend(values)
|
|
elif content_type.startswith("multipart/form-data"):
|
|
try:
|
|
fields = content_type.split(";")
|
|
for field in fields:
|
|
k, sep, v = field.strip().partition("=")
|
|
if k == "boundary" and v:
|
|
parse_multipart_form_data(utf8(v), body, arguments, files)
|
|
break
|
|
else:
|
|
raise ValueError("multipart boundary not found")
|
|
except Exception as e:
|
|
gen_log.warning("Invalid multipart/form-data: %s", e)
|
|
|
|
|
|
def parse_multipart_form_data(boundary, data, arguments, files):
|
|
"""Parses a ``multipart/form-data`` body.
|
|
|
|
The ``boundary`` and ``data`` parameters are both byte strings.
|
|
The dictionaries given in the arguments and files parameters
|
|
will be updated with the contents of the body.
|
|
"""
|
|
# The standard allows for the boundary to be quoted in the header,
|
|
# although it's rare (it happens at least for google app engine
|
|
# xmpp). I think we're also supposed to handle backslash-escapes
|
|
# here but I'll save that until we see a client that uses them
|
|
# in the wild.
|
|
if boundary.startswith(b'"') and boundary.endswith(b'"'):
|
|
boundary = boundary[1:-1]
|
|
final_boundary_index = data.rfind(b"--" + boundary + b"--")
|
|
if final_boundary_index == -1:
|
|
gen_log.warning("Invalid multipart/form-data: no final boundary")
|
|
return
|
|
parts = data[:final_boundary_index].split(b"--" + boundary + b"\r\n")
|
|
for part in parts:
|
|
if not part:
|
|
continue
|
|
eoh = part.find(b"\r\n\r\n")
|
|
if eoh == -1:
|
|
gen_log.warning("multipart/form-data missing headers")
|
|
continue
|
|
headers = HTTPHeaders.parse(part[:eoh].decode("utf-8"))
|
|
disp_header = headers.get("Content-Disposition", "")
|
|
disposition, disp_params = _parse_header(disp_header)
|
|
if disposition != "form-data" or not part.endswith(b"\r\n"):
|
|
gen_log.warning("Invalid multipart/form-data")
|
|
continue
|
|
value = part[eoh + 4:-2]
|
|
if not disp_params.get("name"):
|
|
gen_log.warning("multipart/form-data value missing name")
|
|
continue
|
|
name = disp_params["name"]
|
|
if disp_params.get("filename"):
|
|
ctype = headers.get("Content-Type", "application/unknown")
|
|
files.setdefault(name, []).append(HTTPFile(
|
|
filename=disp_params["filename"], body=value,
|
|
content_type=ctype))
|
|
else:
|
|
arguments.setdefault(name, []).append(value)
|
|
|
|
|
|
def format_timestamp(ts):
|
|
"""Formats a timestamp in the format used by HTTP.
|
|
|
|
The argument may be a numeric timestamp as returned by `time.time`,
|
|
a time tuple as returned by `time.gmtime`, or a `datetime.datetime`
|
|
object.
|
|
|
|
>>> format_timestamp(1359312200)
|
|
'Sun, 27 Jan 2013 18:43:20 GMT'
|
|
"""
|
|
if isinstance(ts, numbers.Real):
|
|
pass
|
|
elif isinstance(ts, (tuple, time.struct_time)):
|
|
ts = calendar.timegm(ts)
|
|
elif isinstance(ts, datetime.datetime):
|
|
ts = calendar.timegm(ts.utctimetuple())
|
|
else:
|
|
raise TypeError("unknown timestamp type: %r" % ts)
|
|
return email.utils.formatdate(ts, usegmt=True)
|
|
|
|
|
|
RequestStartLine = collections.namedtuple(
|
|
'RequestStartLine', ['method', 'path', 'version'])
|
|
|
|
|
|
def parse_request_start_line(line):
|
|
"""Returns a (method, path, version) tuple for an HTTP 1.x request line.
|
|
|
|
The response is a `collections.namedtuple`.
|
|
|
|
>>> parse_request_start_line("GET /foo HTTP/1.1")
|
|
RequestStartLine(method='GET', path='/foo', version='HTTP/1.1')
|
|
"""
|
|
try:
|
|
method, path, version = line.split(" ")
|
|
except ValueError:
|
|
raise HTTPInputError("Malformed HTTP request line")
|
|
if not re.match(r"^HTTP/1\.[0-9]$", version):
|
|
raise HTTPInputError(
|
|
"Malformed HTTP version in HTTP Request-Line: %r" % version)
|
|
return RequestStartLine(method, path, version)
|
|
|
|
|
|
ResponseStartLine = collections.namedtuple(
|
|
'ResponseStartLine', ['version', 'code', 'reason'])
|
|
|
|
|
|
def parse_response_start_line(line):
|
|
"""Returns a (version, code, reason) tuple for an HTTP 1.x response line.
|
|
|
|
The response is a `collections.namedtuple`.
|
|
|
|
>>> parse_response_start_line("HTTP/1.1 200 OK")
|
|
ResponseStartLine(version='HTTP/1.1', code=200, reason='OK')
|
|
"""
|
|
line = native_str(line)
|
|
match = re.match("(HTTP/1.[0-9]) ([0-9]+) ([^\r]*)", line)
|
|
if not match:
|
|
raise HTTPInputError("Error parsing response start line")
|
|
return ResponseStartLine(match.group(1), int(match.group(2)),
|
|
match.group(3))
|
|
|
|
# _parseparam and _parse_header are copied and modified from python2.7's cgi.py
|
|
# The original 2.7 version of this code did not correctly support some
|
|
# combinations of semicolons and double quotes.
|
|
# It has also been modified to support valueless parameters as seen in
|
|
# websocket extension negotiations.
|
|
|
|
|
|
def _parseparam(s):
|
|
while s[:1] == ';':
|
|
s = s[1:]
|
|
end = s.find(';')
|
|
while end > 0 and (s.count('"', 0, end) - s.count('\\"', 0, end)) % 2:
|
|
end = s.find(';', end + 1)
|
|
if end < 0:
|
|
end = len(s)
|
|
f = s[:end]
|
|
yield f.strip()
|
|
s = s[end:]
|
|
|
|
|
|
def _parse_header(line):
|
|
"""Parse a Content-type like header.
|
|
|
|
Return the main content-type and a dictionary of options.
|
|
|
|
"""
|
|
parts = _parseparam(';' + line)
|
|
key = next(parts)
|
|
pdict = {}
|
|
for p in parts:
|
|
i = p.find('=')
|
|
if i >= 0:
|
|
name = p[:i].strip().lower()
|
|
value = p[i + 1:].strip()
|
|
if len(value) >= 2 and value[0] == value[-1] == '"':
|
|
value = value[1:-1]
|
|
value = value.replace('\\\\', '\\').replace('\\"', '"')
|
|
pdict[name] = value
|
|
else:
|
|
pdict[p] = None
|
|
return key, pdict
|
|
|
|
|
|
def _encode_header(key, pdict):
|
|
"""Inverse of _parse_header.
|
|
|
|
>>> _encode_header('permessage-deflate',
|
|
... {'client_max_window_bits': 15, 'client_no_context_takeover': None})
|
|
'permessage-deflate; client_max_window_bits=15; client_no_context_takeover'
|
|
"""
|
|
if not pdict:
|
|
return key
|
|
out = [key]
|
|
# Sort the parameters just to make it easy to test.
|
|
for k, v in sorted(pdict.items()):
|
|
if v is None:
|
|
out.append(k)
|
|
else:
|
|
# TODO: quote if necessary.
|
|
out.append('%s=%s' % (k, v))
|
|
return '; '.join(out)
|
|
|
|
|
|
def doctests():
|
|
import doctest
|
|
return doctest.DocTestSuite()
|
|
|
|
def split_host_and_port(netloc):
|
|
"""Returns ``(host, port)`` tuple from ``netloc``.
|
|
|
|
Returned ``port`` will be ``None`` if not present.
|
|
|
|
.. versionadded:: 4.1
|
|
"""
|
|
match = re.match(r'^(.+):(\d+)$', netloc)
|
|
if match:
|
|
host = match.group(1)
|
|
port = int(match.group(2))
|
|
else:
|
|
host = netloc
|
|
port = None
|
|
return (host, port)
|