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# -*- coding: utf-8 -*-
"""
werkzeug.useragents
~~~~~~~~~~~~~~~~~~~
This module provides a helper to inspect user agent strings. This module
is far from complete but should work for most of the currently available
browsers.
:copyright: 2007 Pallets
:license: BSD-3-Clause
"""
import re
import warnings
class UserAgentParser(object):
"""A simple user agent parser. Used by the `UserAgent`."""
platforms = (
("cros", "chromeos"),
("iphone|ios", "iphone"),
("ipad", "ipad"),
(r"darwin|mac|os\s*x", "macos"),
("win", "windows"),
(r"android", "android"),
("netbsd", "netbsd"),
("openbsd", "openbsd"),
("freebsd", "freebsd"),
("dragonfly", "dragonflybsd"),
("(sun|i86)os", "solaris"),
(r"x11|lin(\b|ux)?", "linux"),
(r"nintendo\s+wii", "wii"),
("irix", "irix"),
("hp-?ux", "hpux"),
("aix", "aix"),
("sco|unix_sv", "sco"),
("bsd", "bsd"),
("amiga", "amiga"),
("blackberry|playbook", "blackberry"),
("symbian", "symbian"),
)
browsers = (
("googlebot", "google"),
("msnbot", "msn"),
("yahoo", "yahoo"),
("ask jeeves", "ask"),
(r"aol|america\s+online\s+browser", "aol"),
("opera", "opera"),
("edge", "edge"),
("chrome|crios", "chrome"),
("seamonkey", "seamonkey"),
("firefox|firebird|phoenix|iceweasel", "firefox"),
("galeon", "galeon"),
("safari|version", "safari"),
("webkit", "webkit"),
("camino", "camino"),
("konqueror", "konqueror"),
("k-meleon", "kmeleon"),
("netscape", "netscape"),
(r"msie|microsoft\s+internet\s+explorer|trident/.+? rv:", "msie"),
("lynx", "lynx"),
("links", "links"),
("Baiduspider", "baidu"),
("bingbot", "bing"),
("mozilla", "mozilla"),
)
_browser_version_re = r"(?:%s)[/\sa-z(]*(\d+[.\da-z]+)?"
_language_re = re.compile(
r"(?:;\s*|\s+)(\b\w{2}\b(?:-\b\w{2}\b)?)\s*;|"
r"(?:\(|\[|;)\s*(\b\w{2}\b(?:-\b\w{2}\b)?)\s*(?:\]|\)|;)"
)
def __init__(self):
self.platforms = [(b, re.compile(a, re.I)) for a, b in self.platforms]
self.browsers = [
(b, re.compile(self._browser_version_re % a, re.I))
for a, b in self.browsers
]
def __call__(self, user_agent):
for platform, regex in self.platforms: # noqa: B007
match = regex.search(user_agent)
if match is not None:
break
else:
platform = None
for browser, regex in self.browsers: # noqa: B007
match = regex.search(user_agent)
if match is not None:
version = match.group(1)
break
else:
browser = version = None
match = self._language_re.search(user_agent)
if match is not None:
language = match.group(1) or match.group(2)
else:
language = None
return platform, browser, version, language
class UserAgent(object):
"""Represents a user agent. Pass it a WSGI environment or a user agent
string and you can inspect some of the details from the user agent
string via the attributes. The following attributes exist:
.. attribute:: string
the raw user agent string
.. attribute:: platform
the browser platform. The following platforms are currently
recognized:
- `aix`
- `amiga`
- `android`
- `blackberry`
- `bsd`
- `chromeos`
- `dragonflybsd`
- `freebsd`
- `hpux`
- `ipad`
- `iphone`
- `irix`
- `linux`
- `macos`
- `netbsd`
- `openbsd`
- `sco`
- `solaris`
- `symbian`
- `wii`
- `windows`
.. attribute:: browser
the name of the browser. The following browsers are currently
recognized:
- `aol` *
- `ask` *
- `baidu` *
- `bing` *
- `camino`
- `chrome`
- `edge`
- `firefox`
- `galeon`
- `google` *
- `kmeleon`
- `konqueror`
- `links`
- `lynx`
- `mozilla`
- `msie`
- `msn`
- `netscape`
- `opera`
- `safari`
- `seamonkey`
- `webkit`
- `yahoo` *
(Browsers marked with a star (``*``) are crawlers.)
.. attribute:: version
the version of the browser
.. attribute:: language
the language of the browser
"""
_parser = UserAgentParser()
def __init__(self, environ_or_string):
if isinstance(environ_or_string, dict):
environ_or_string = environ_or_string.get("HTTP_USER_AGENT", "")
self.string = environ_or_string
self.platform, self.browser, self.version, self.language = self._parser(
environ_or_string
)
def to_header(self):
return self.string
def __str__(self):
return self.string
def __nonzero__(self):
return bool(self.browser)
__bool__ = __nonzero__
def __repr__(self):
return "<%s %r/%s>" % (self.__class__.__name__, self.browser, self.version)
# DEPRECATED
from .wrappers import UserAgentMixin as _UserAgentMixin
class UserAgentMixin(_UserAgentMixin):
@property
def user_agent(self, *args, **kwargs):
warnings.warn(
"'werkzeug.useragents.UserAgentMixin' should be imported"
" from 'werkzeug.wrappers.UserAgentMixin'. This old import"
" will be removed in version 1.0.",
DeprecationWarning,
stacklevel=2,
)
return super(_UserAgentMixin, self).user_agent
|
