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basic auth with "htpasswd" file - auth example for tornado webserver
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#!/usr/bin/env python | |
# also check https://gist.github.com/fliphess/7836479 | |
import tornado.ioloop | |
import tornado.web | |
import base64 | |
import netaddr | |
import bcrypt | |
def require_basic_auth(handler_class): | |
""" auth decorator see: | |
http://kevinsayscode.tumblr.com/post/7362319243/easy-basic-http-authentication-with-tornado | |
""" | |
def wrap_execute(handler_execute): | |
def require_basic_auth(handler, kwargs): | |
auth_header = handler.request.headers.get('Authorization') | |
if auth_header is None or not auth_header.startswith('Basic '): | |
handler.set_status(401) | |
handler.set_header('WWW-Authenticate', 'Basic realm=Restricted') | |
handler._transforms = [] | |
handler.finish() | |
return False | |
auth_decoded = base64.decodestring(auth_header[6:]) | |
kwargs['basicauth_user'], kwargs['basicauth_pass'] = auth_decoded.split(':', 2) | |
return True | |
def _execute(self, transforms, *args, **kwargs): | |
if not require_basic_auth(self, kwargs): | |
return False | |
return handler_execute(self, transforms, *args, **kwargs) | |
return _execute | |
handler_class._execute = wrap_execute(handler_class._execute) | |
return handler_class | |
def read_passwd_file(passwdfile='./.htpasswd'): | |
with open(passwdfile, "r") as fh: | |
content = fh.readlines() | |
for item in content: | |
item.strip() | |
passwords = {} | |
for line in content: | |
if ":" in line: | |
username, password = line.split(":") | |
passwords[username] = password | |
return passwords | |
def verify_password(passwords, username, password): | |
hashed = bcrypt.hashpw(password, bcrypt.gensalt(12)) | |
stored_hash = passwords[username].strip("\n") | |
if stored_hash == bcrypt.hashpw(password, stored_hash): | |
return True | |
else: | |
return False | |
@require_basic_auth | |
class MainHandler(tornado.web.RequestHandler): | |
def get(self, basicauth_user, basicauth_pass): | |
passwords = read_passwd_file() | |
if verify_password(passwords): | |
self.write("Hello, authenticated user") | |
if __name__ == "__main__": | |
application = tornado.web.Application([ | |
(r"/", MainHandler), | |
]) | |
application.listen(8888) | |
tornado.ioloop.IOLoop.instance().start() | |
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