ade@google.com | 85f1a02 | 2010-08-19 00:02:59 +0100 | [diff] [blame] | 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 | import httplib2 |
| 16 | import oauth2 as oauth |
| 17 | import simplejson |
| 18 | |
| 19 | |
| 20 | def oauth_wrap(consumer, token, http): |
| 21 | """ |
| 22 | Args: |
| 23 | http - An instance of httplib2.Http |
| 24 | or something that acts like it. |
| 25 | |
| 26 | Returns: |
| 27 | A modified instance of http that was passed in. |
| 28 | |
| 29 | Example: |
| 30 | |
| 31 | h = httplib2.Http() |
| 32 | h = oauth_wrap(h) |
| 33 | |
| 34 | Grumble. You can't create a new OAuth |
| 35 | subclass of httplib2.Authenication because |
| 36 | it never gets passed the absolute URI, which is |
| 37 | needed for signing. So instead we have to overload |
| 38 | 'request' with a closure that adds in the |
| 39 | Authorization header and then calls the original version |
| 40 | of 'request(). |
| 41 | """ |
| 42 | request_orig = http.request |
| 43 | signer = oauth.SignatureMethod_HMAC_SHA1() |
| 44 | |
| 45 | def new_request(uri, method='GET', body=None, headers=None, |
| 46 | redirections=httplib2.DEFAULT_MAX_REDIRECTS, connection_type=None): |
| 47 | """Modify the request headers to add the appropriate |
| 48 | Authorization header.""" |
| 49 | req = oauth.Request.from_consumer_and_token( |
| 50 | consumer, token, http_method=method, http_url=uri) |
| 51 | req.sign_request(signer, consumer, token) |
| 52 | if headers == None: |
| 53 | headers = {} |
| 54 | headers.update(req.to_header()) |
| 55 | headers['user-agent'] = 'jcgregorio-test-client' |
| 56 | return request_orig(uri, method, body, headers, redirections, |
| 57 | connection_type) |
| 58 | |
| 59 | http.request = new_request |
| 60 | return http |
| 61 | |
| 62 | def get_authorised_http(oauth_params): |
| 63 | consumer = oauth.Consumer(oauth_params['consumer_key'], |
| 64 | oauth_params['consumer_secret']) |
| 65 | token = oauth.Token(oauth_params['oauth_token'], |
| 66 | oauth_params['oauth_token_secret']) |
| 67 | |
| 68 | # Create a simple monkeypatch for httplib2.Http.request |
| 69 | # just adds in the oauth authorization header and then calls |
| 70 | # the original request(). |
| 71 | http = httplib2.Http() |
| 72 | return oauth_wrap(consumer, token, http) |
| 73 | |
| 74 | def get_wrapped_http(filename='oauth_token.dat'): |
| 75 | f = open(filename, 'r') |
| 76 | oauth_params = simplejson.loads(f.read()) |
| 77 | |
| 78 | return get_authorised_http(oauth_params) |