chrome/browser/local_discovery/cloud_print_base_api_flow.h

   1 // Copyright 2013 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_LOCAL_DISCOVERY_CLOUD_PRINT_BASE_API_FLOW_H_
   6 #define CHROME_BROWSER_LOCAL_DISCOVERY_CLOUD_PRINT_BASE_API_FLOW_H_
   7
   8 #include <string>
   9
  10 #include "chrome/browser/local_discovery/privet_constants.h"
  11 #include "chrome/browser/local_discovery/privet_http.h"
  12 #include "google_apis/gaia/oauth2_token_service.h"
  13 #include "net/url_request/url_fetcher.h"
  14 #include "net/url_request/url_fetcher_delegate.h"
  15 #include "net/url_request/url_request_context_getter.h"
  16
  17 namespace local_discovery {
  18
  19 // API call flow for communicating with cloud print.
  20 class CloudPrintBaseApiFlow : public net::URLFetcherDelegate,
  21                               public OAuth2TokenService::Consumer {
  22  public:
  23   // TODO(noamsml): Better error model for this class.
  24   enum Status {
  25     SUCCESS,
  26     ERROR_TOKEN,
  27     ERROR_NETWORK,
  28     ERROR_HTTP_CODE,
  29     ERROR_FROM_SERVER,
  30     ERROR_MALFORMED_RESPONSE
  31   };
  32
  33   class Delegate {
  34    public:
  35     virtual ~Delegate() {}
  36
  37     virtual void OnCloudPrintAPIFlowError(CloudPrintBaseApiFlow* flow,
  38                                           Status status) = 0;
  39     virtual void OnCloudPrintAPIFlowComplete(
  40         CloudPrintBaseApiFlow* flow,
  41         const base::DictionaryValue* value) = 0;
  42   };
  43
  44   // Create an OAuth2-based confirmation.
  45   CloudPrintBaseApiFlow(net::URLRequestContextGetter* request_context,
  46                         OAuth2TokenService* token_service_,
  47                         const std::string& account_id,
  48                         const GURL& automated_claim_url,
  49                         Delegate* delegate);
  50
  51   // Create a cookie-based confirmation.
  52   CloudPrintBaseApiFlow(net::URLRequestContextGetter* request_context,
  53                         int  user_index,
  54                         const std::string& xsrf_token,
  55                         const GURL& automated_claim_url,
  56                         Delegate* delegate);
  57
  58   // Create a cookie-based confirmation with no XSRF token (for requests that
  59   // don't need an XSRF token).
  60   CloudPrintBaseApiFlow(net::URLRequestContextGetter* request_context,
  61                         int  user_index,
  62                         const GURL& automated_claim_url,
  63                         Delegate* delegate);
  64
  65
  66   virtual ~CloudPrintBaseApiFlow();
  67
  68   void Start();
  69
  70
  71   // net::URLFetcherDelegate implementation:
  72   virtual void OnURLFetchComplete(const net::URLFetcher* source) OVERRIDE;
  73
  74   // OAuth2TokenService::Consumer implementation:
  75   virtual void OnGetTokenSuccess(const OAuth2TokenService::Request* request,
  76                                  const std::string& access_token,
  77                                  const base::Time& expiration_time) OVERRIDE;
  78   virtual void OnGetTokenFailure(const OAuth2TokenService::Request* request,
  79                                  const GoogleServiceAuthError& error) OVERRIDE;
  80
  81   // Return the user index or kAccountIndexUseOAuth2 if none is available.
  82   int user_index() { return user_index_; }
  83
  84  private:
  85   bool UseOAuth2() { return user_index_ == kAccountIndexUseOAuth2; }
  86
  87   void CreateRequest(const GURL& url);
  88
  89   scoped_ptr<net::URLFetcher> url_fetcher_;
  90   scoped_ptr<OAuth2TokenService::Request> oauth_request_;
  91   scoped_refptr<net::URLRequestContextGetter> request_context_;
  92   OAuth2TokenService* token_service_;
  93   std::string account_id_;
  94   int user_index_;
  95   std::string xsrf_token_;
  96   GURL url_;
  97   Delegate* delegate_;
  98 };
  99
 100 }  // namespace local_discovery
 101
 102 #endif  // CHROME_BROWSER_LOCAL_DISCOVERY_CLOUD_PRINT_BASE_API_FLOW_H_