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| 1 # Copyright (C) 2010 Google Inc. |
| 2 # |
| 3 # Licensed under the Apache License, Version 2.0 (the "License"); |
| 4 # you may not use this file except in compliance with the License. |
| 5 # You may obtain a copy of the License at |
| 6 # |
| 7 # http://www.apache.org/licenses/LICENSE-2.0 |
| 8 # |
| 9 # Unless required by applicable law or agreed to in writing, software |
| 10 # distributed under the License is distributed on an "AS IS" BASIS, |
| 11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 12 # See the License for the specific language governing permissions and |
| 13 # limitations under the License. |
| 14 |
| 15 """Command-line tools for authenticating via OAuth 2.0 |
| 16 |
| 17 Do the OAuth 2.0 Web Server dance for a command line application. Stores the |
| 18 generated credentials in a common file that is used by other example apps in |
| 19 the same directory. |
| 20 """ |
| 21 |
| 22 __author__ = 'jcgregorio@google.com (Joe Gregorio)' |
| 23 __all__ = ['run'] |
| 24 |
| 25 |
| 26 import BaseHTTPServer |
| 27 import gflags |
| 28 import socket |
| 29 import sys |
| 30 import webbrowser |
| 31 |
| 32 from oauth2client.client import FlowExchangeError |
| 33 from oauth2client.client import OOB_CALLBACK_URN |
| 34 from oauth2client import util |
| 35 |
| 36 try: |
| 37 from urlparse import parse_qsl |
| 38 except ImportError: |
| 39 from cgi import parse_qsl |
| 40 |
| 41 |
| 42 FLAGS = gflags.FLAGS |
| 43 |
| 44 gflags.DEFINE_boolean('auth_local_webserver', True, |
| 45 ('Run a local web server to handle redirects during ' |
| 46 'OAuth authorization.')) |
| 47 |
| 48 gflags.DEFINE_string('auth_host_name', 'localhost', |
| 49 ('Host name to use when running a local web server to ' |
| 50 'handle redirects during OAuth authorization.')) |
| 51 |
| 52 gflags.DEFINE_multi_int('auth_host_port', [8080, 8090], |
| 53 ('Port to use when running a local web server to ' |
| 54 'handle redirects during OAuth authorization.')) |
| 55 |
| 56 |
| 57 class ClientRedirectServer(BaseHTTPServer.HTTPServer): |
| 58 """A server to handle OAuth 2.0 redirects back to localhost. |
| 59 |
| 60 Waits for a single request and parses the query parameters |
| 61 into query_params and then stops serving. |
| 62 """ |
| 63 query_params = {} |
| 64 |
| 65 |
| 66 class ClientRedirectHandler(BaseHTTPServer.BaseHTTPRequestHandler): |
| 67 """A handler for OAuth 2.0 redirects back to localhost. |
| 68 |
| 69 Waits for a single request and parses the query parameters |
| 70 into the servers query_params and then stops serving. |
| 71 """ |
| 72 |
| 73 def do_GET(s): |
| 74 """Handle a GET request. |
| 75 |
| 76 Parses the query parameters and prints a message |
| 77 if the flow has completed. Note that we can't detect |
| 78 if an error occurred. |
| 79 """ |
| 80 s.send_response(200) |
| 81 s.send_header("Content-type", "text/html") |
| 82 s.end_headers() |
| 83 query = s.path.split('?', 1)[-1] |
| 84 query = dict(parse_qsl(query)) |
| 85 s.server.query_params = query |
| 86 s.wfile.write("<html><head><title>Authentication Status</title></head>") |
| 87 s.wfile.write("<body><p>The authentication flow has completed.</p>") |
| 88 s.wfile.write("</body></html>") |
| 89 |
| 90 def log_message(self, format, *args): |
| 91 """Do not log messages to stdout while running as command line program.""" |
| 92 pass |
| 93 |
| 94 |
| 95 @util.positional(2) |
| 96 def run(flow, storage, http=None): |
| 97 """Core code for a command-line application. |
| 98 |
| 99 The run() function is called from your application and runs through all the |
| 100 steps to obtain credentials. It takes a Flow argument and attempts to open an |
| 101 authorization server page in the user's default web browser. The server asks |
| 102 the user to grant your application access to the user's data. If the user |
| 103 grants access, the run() function returns new credentials. The new credentials |
| 104 are also stored in the Storage argument, which updates the file associated |
| 105 with the Storage object. |
| 106 |
| 107 It presumes it is run from a command-line application and supports the |
| 108 following flags: |
| 109 |
| 110 --auth_host_name: Host name to use when running a local web server |
| 111 to handle redirects during OAuth authorization. |
| 112 (default: 'localhost') |
| 113 |
| 114 --auth_host_port: Port to use when running a local web server to handle |
| 115 redirects during OAuth authorization.; |
| 116 repeat this option to specify a list of values |
| 117 (default: '[8080, 8090]') |
| 118 (an integer) |
| 119 |
| 120 --[no]auth_local_webserver: Run a local web server to handle redirects |
| 121 during OAuth authorization. |
| 122 (default: 'true') |
| 123 |
| 124 Since it uses flags make sure to initialize the gflags module before calling |
| 125 run(). |
| 126 |
| 127 Args: |
| 128 flow: Flow, an OAuth 2.0 Flow to step through. |
| 129 storage: Storage, a Storage to store the credential in. |
| 130 http: An instance of httplib2.Http.request |
| 131 or something that acts like it. |
| 132 |
| 133 Returns: |
| 134 Credentials, the obtained credential. |
| 135 """ |
| 136 if FLAGS.auth_local_webserver: |
| 137 success = False |
| 138 port_number = 0 |
| 139 for port in FLAGS.auth_host_port: |
| 140 port_number = port |
| 141 try: |
| 142 httpd = ClientRedirectServer((FLAGS.auth_host_name, port), |
| 143 ClientRedirectHandler) |
| 144 except socket.error, e: |
| 145 pass |
| 146 else: |
| 147 success = True |
| 148 break |
| 149 FLAGS.auth_local_webserver = success |
| 150 if not success: |
| 151 print 'Failed to start a local webserver listening on either port 8080' |
| 152 print 'or port 9090. Please check your firewall settings and locally' |
| 153 print 'running programs that may be blocking or using those ports.' |
| 154 print |
| 155 print 'Falling back to --noauth_local_webserver and continuing with', |
| 156 print 'authorization.' |
| 157 print |
| 158 |
| 159 if FLAGS.auth_local_webserver: |
| 160 oauth_callback = 'http://%s:%s/' % (FLAGS.auth_host_name, port_number) |
| 161 else: |
| 162 oauth_callback = OOB_CALLBACK_URN |
| 163 flow.redirect_uri = oauth_callback |
| 164 authorize_url = flow.step1_get_authorize_url() |
| 165 |
| 166 if FLAGS.auth_local_webserver: |
| 167 webbrowser.open(authorize_url, new=1, autoraise=True) |
| 168 print 'Your browser has been opened to visit:' |
| 169 print |
| 170 print ' ' + authorize_url |
| 171 print |
| 172 print 'If your browser is on a different machine then exit and re-run this' |
| 173 print 'application with the command-line parameter ' |
| 174 print |
| 175 print ' --noauth_local_webserver' |
| 176 print |
| 177 else: |
| 178 print 'Go to the following link in your browser:' |
| 179 print |
| 180 print ' ' + authorize_url |
| 181 print |
| 182 |
| 183 code = None |
| 184 if FLAGS.auth_local_webserver: |
| 185 httpd.handle_request() |
| 186 if 'error' in httpd.query_params: |
| 187 sys.exit('Authentication request was rejected.') |
| 188 if 'code' in httpd.query_params: |
| 189 code = httpd.query_params['code'] |
| 190 else: |
| 191 print 'Failed to find "code" in the query parameters of the redirect.' |
| 192 sys.exit('Try running with --noauth_local_webserver.') |
| 193 else: |
| 194 code = raw_input('Enter verification code: ').strip() |
| 195 |
| 196 try: |
| 197 credential = flow.step2_exchange(code, http=http) |
| 198 except FlowExchangeError, e: |
| 199 sys.exit('Authentication has failed: %s' % e) |
| 200 |
| 201 storage.put(credential) |
| 202 credential.set_store(storage) |
| 203 print 'Authentication successful.' |
| 204 |
| 205 return credential |
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Chromium Code Reviews
Issue 20515002:
Add google-api-python-client in third_party/ (Closed)
Base URL: https://src.chromium.org/chrome/trunk/tools/