mirror of
https://github.com/viq/NewsBlur.git
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178 lines
5.5 KiB
Python
178 lines
5.5 KiB
Python
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# Copyright (C) 2010 Google Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Command-line tools for authenticating via OAuth 2.0
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Do the OAuth 2.0 Web Server dance for a command line application. Stores the
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generated credentials in a common file that is used by other example apps in
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the same directory.
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"""
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__author__ = 'jcgregorio@google.com (Joe Gregorio)'
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__all__ = ['run']
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import BaseHTTPServer
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import gflags
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import socket
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import sys
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import webbrowser
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from oauth2client.client import FlowExchangeError
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from oauth2client.client import OOB_CALLBACK_URN
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from oauth2client import util
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try:
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from urlparse import parse_qsl
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except ImportError:
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from cgi import parse_qsl
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FLAGS = gflags.FLAGS
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gflags.DEFINE_boolean('auth_local_webserver', True,
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('Run a local web server to handle redirects during '
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'OAuth authorization.'))
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gflags.DEFINE_string('auth_host_name', 'localhost',
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('Host name to use when running a local web server to '
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'handle redirects during OAuth authorization.'))
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gflags.DEFINE_multi_int('auth_host_port', [8080, 8090],
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('Port to use when running a local web server to '
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'handle redirects during OAuth authorization.'))
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class ClientRedirectServer(BaseHTTPServer.HTTPServer):
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"""A server to handle OAuth 2.0 redirects back to localhost.
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Waits for a single request and parses the query parameters
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into query_params and then stops serving.
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"""
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query_params = {}
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class ClientRedirectHandler(BaseHTTPServer.BaseHTTPRequestHandler):
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"""A handler for OAuth 2.0 redirects back to localhost.
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Waits for a single request and parses the query parameters
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into the servers query_params and then stops serving.
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"""
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def do_GET(s):
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"""Handle a GET request.
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Parses the query parameters and prints a message
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if the flow has completed. Note that we can't detect
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if an error occurred.
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"""
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s.send_response(200)
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s.send_header("Content-type", "text/html")
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s.end_headers()
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query = s.path.split('?', 1)[-1]
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query = dict(parse_qsl(query))
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s.server.query_params = query
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s.wfile.write("<html><head><title>Authentication Status</title></head>")
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s.wfile.write("<body><p>The authentication flow has completed.</p>")
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s.wfile.write("</body></html>")
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def log_message(self, format, *args):
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"""Do not log messages to stdout while running as command line program."""
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pass
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@util.positional(2)
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def run(flow, storage, http=None):
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"""Core code for a command-line application.
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Args:
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flow: Flow, an OAuth 2.0 Flow to step through.
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storage: Storage, a Storage to store the credential in.
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http: An instance of httplib2.Http.request
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or something that acts like it.
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Returns:
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Credentials, the obtained credential.
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"""
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if FLAGS.auth_local_webserver:
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success = False
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port_number = 0
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for port in FLAGS.auth_host_port:
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port_number = port
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try:
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httpd = ClientRedirectServer((FLAGS.auth_host_name, port),
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ClientRedirectHandler)
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except socket.error, e:
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pass
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else:
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success = True
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break
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FLAGS.auth_local_webserver = success
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if not success:
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print 'Failed to start a local webserver listening on either port 8080'
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print 'or port 9090. Please check your firewall settings and locally'
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print 'running programs that may be blocking or using those ports.'
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print
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print 'Falling back to --noauth_local_webserver and continuing with',
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print 'authorization.'
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print
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if FLAGS.auth_local_webserver:
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oauth_callback = 'http://%s:%s/' % (FLAGS.auth_host_name, port_number)
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else:
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oauth_callback = OOB_CALLBACK_URN
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flow.redirect_uri = oauth_callback
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authorize_url = flow.step1_get_authorize_url()
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if FLAGS.auth_local_webserver:
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webbrowser.open(authorize_url, new=1, autoraise=True)
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print 'Your browser has been opened to visit:'
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print
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print ' ' + authorize_url
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print
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print 'If your browser is on a different machine then exit and re-run this'
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print 'application with the command-line parameter '
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print
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print ' --noauth_local_webserver'
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print
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else:
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print 'Go to the following link in your browser:'
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print
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print ' ' + authorize_url
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print
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code = None
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if FLAGS.auth_local_webserver:
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httpd.handle_request()
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if 'error' in httpd.query_params:
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sys.exit('Authentication request was rejected.')
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if 'code' in httpd.query_params:
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code = httpd.query_params['code']
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else:
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print 'Failed to find "code" in the query parameters of the redirect.'
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sys.exit('Try running with --noauth_local_webserver.')
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else:
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code = raw_input('Enter verification code: ').strip()
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try:
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credential = flow.step2_exchange(code, http=http)
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except FlowExchangeError, e:
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sys.exit('Authentication has failed: %s' % e)
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storage.put(credential)
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credential.set_store(storage)
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print 'Authentication successful.'
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return credential
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