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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4 
5 #ifndef CHROME_BROWSER_PROFILES_PROFILE_DOWNLOADER_H_
6 #define CHROME_BROWSER_PROFILES_PROFILE_DOWNLOADER_H_
7 
8 #include <string>
9 
10 #include "base/basictypes.h"
11 #include "base/gtest_prod_util.h"
12 #include "base/memory/scoped_ptr.h"
13 #include "base/strings/string16.h"
14 #include "chrome/browser/image_decoder.h"
15 #include "google_apis/gaia/oauth2_token_service.h"
16 #include "net/url_request/url_fetcher_delegate.h"
17 #include "third_party/skia/include/core/SkBitmap.h"
18 #include "url/gurl.h"
19 
20 class ProfileDownloaderDelegate;
21 class OAuth2AccessTokenFetcher;
22 
23 namespace net {
24 class URLFetcher;
25 }  // namespace net
26 
27 // Downloads user profile information. The profile picture is decoded in a
28 // sandboxed process.
29 class ProfileDownloader : public net::URLFetcherDelegate,
30                           public ImageDecoder::Delegate,
31                           public OAuth2TokenService::Observer,
32                           public OAuth2TokenService::Consumer {
33  public:
34   enum PictureStatus {
35     PICTURE_SUCCESS,
36     PICTURE_FAILED,
37     PICTURE_DEFAULT,
38     PICTURE_CACHED,
39   };
40 
41   explicit ProfileDownloader(ProfileDownloaderDelegate* delegate);
42   virtual ~ProfileDownloader();
43 
44   // Starts downloading profile information if the necessary authorization token
45   // is ready. If not, subscribes to token service and starts fetching if the
46   // token is available. Should not be called more than once.
47   virtual void Start();
48 
49   // Starts downloading profile information if the necessary authorization token
50   // is ready. If not, subscribes to token service and starts fetching if the
51   // token is available. Should not be called more than once.
52   virtual void StartForAccount(const std::string& account_id);
53 
54   // On successful download this returns the full name of the user. For example
55   // "Pat Smith".
56   virtual base::string16 GetProfileFullName() const;
57 
58   // On successful download this returns the given name of the user. For example
59   // if the name is "Pat Smith", the given name is "Pat".
60   virtual base::string16 GetProfileGivenName() const;
61 
62   // On successful download this returns G+ locale preference of the user.
63   virtual std::string GetProfileLocale() const;
64 
65   // On successful download this returns the profile picture of the user.
66   // For users with no profile picture set (that is, they have the default
67   // profile picture) this will return an Null bitmap.
68   virtual SkBitmap GetProfilePicture() const;
69 
70   // Gets the profile picture status.
71   virtual PictureStatus GetProfilePictureStatus() const;
72 
73   // Gets the URL for the profile picture. This can be cached so that the same
74   // picture is not downloaded multiple times. This value should only be used
75   // when the picture status is PICTURE_SUCCESS.
76   virtual std::string GetProfilePictureURL() const;
77 
78  private:
79   friend class ProfileDownloaderTest;
80   FRIEND_TEST_ALL_PREFIXES(ProfileDownloaderTest, ParseData);
81   FRIEND_TEST_ALL_PREFIXES(ProfileDownloaderTest, DefaultURL);
82 
83   // Overriden from net::URLFetcherDelegate:
84   virtual void OnURLFetchComplete(const net::URLFetcher* source) OVERRIDE;
85 
86   // Overriden from ImageDecoder::Delegate:
87   virtual void OnImageDecoded(const ImageDecoder* decoder,
88                               const SkBitmap& decoded_image) OVERRIDE;
89   virtual void OnDecodeImageFailed(const ImageDecoder* decoder) OVERRIDE;
90 
91   // Overriden from OAuth2TokenService::Observer:
92   virtual void OnRefreshTokenAvailable(const std::string& account_id) OVERRIDE;
93 
94   // Overriden from OAuth2TokenService::Consumer:
95   virtual void OnGetTokenSuccess(const OAuth2TokenService::Request* request,
96                                  const std::string& access_token,
97                                  const base::Time& expiration_time) OVERRIDE;
98   virtual void OnGetTokenFailure(const OAuth2TokenService::Request* request,
99                                  const GoogleServiceAuthError& error) OVERRIDE;
100 
101   // Parses the entry response and gets the name, profile image URL and locale.
102   // |data| should be the JSON formatted data return by the response.
103   // Returns false to indicate a parsing error.
104   static bool ParseProfileJSON(const std::string& data,
105                                base::string16* full_name,
106                                base::string16* given_name,
107                                std::string* url,
108                                int image_size,
109                                std::string* profile_locale);
110   // Returns true if the image url is url of the default profile picture.
111   static bool IsDefaultProfileImageURL(const std::string& url);
112 
113   // Issues the first request to get user profile image.
114   void StartFetchingImage();
115 
116   // Gets the authorization header.
117   const char* GetAuthorizationHeader() const;
118 
119   // Starts fetching OAuth2 access token. This is needed before the GAIA info
120   // can be downloaded.
121   void StartFetchingOAuth2AccessToken();
122 
123   ProfileDownloaderDelegate* delegate_;
124   std::string account_id_;
125   std::string auth_token_;
126   scoped_ptr<net::URLFetcher> user_entry_fetcher_;
127   scoped_ptr<net::URLFetcher> profile_image_fetcher_;
128   scoped_ptr<OAuth2TokenService::Request> oauth2_access_token_request_;
129   base::string16 profile_full_name_;
130   base::string16 profile_given_name_;
131   std::string profile_locale_;
132   SkBitmap profile_picture_;
133   PictureStatus picture_status_;
134   std::string picture_url_;
135 
136   DISALLOW_COPY_AND_ASSIGN(ProfileDownloader);
137 };
138 
139 #endif  // CHROME_BROWSER_PROFILES_PROFILE_DOWNLOADER_H_
140