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 CONTENT_PUBLIC_BROWSER_RESOURCE_CONTEXT_H_ 6 #define CONTENT_PUBLIC_BROWSER_RESOURCE_CONTEXT_H_ 7 8 #include <string> 9 10 #include "base/basictypes.h" 11 #include "base/callback.h" 12 #include "base/memory/scoped_ptr.h" 13 #include "base/supports_user_data.h" 14 #include "build/build_config.h" 15 #include "content/common/content_export.h" 16 17 class GURL; 18 19 namespace appcache { 20 class AppCacheService; 21 } 22 23 namespace net { 24 class ClientCertStore; 25 class HostResolver; 26 class KeygenHandler; 27 class URLRequestContext; 28 } 29 30 namespace content { 31 32 // ResourceContext contains the relevant context information required for 33 // resource loading. It lives on the IO thread, although it is constructed on 34 // the UI thread. It must be destructed on the IO thread. 35 class CONTENT_EXPORT ResourceContext : public base::SupportsUserData { 36 public: 37 #if defined(OS_IOS) 38 virtual ~ResourceContext() {} 39 #else 40 ResourceContext(); 41 virtual ~ResourceContext(); 42 #endif 43 virtual net::HostResolver* GetHostResolver() = 0; 44 45 // DEPRECATED: This is no longer a valid given isolated apps/sites and 46 // storage partitioning. This getter returns the default context associated 47 // with a BrowsingContext. 48 virtual net::URLRequestContext* GetRequestContext() = 0; 49 50 // Get platform ClientCertStore. May return NULL. 51 virtual scoped_ptr<net::ClientCertStore> CreateClientCertStore(); 52 53 // Create a platform KeygenHandler and pass it to |callback|. The |callback| 54 // may be run synchronously. 55 virtual void CreateKeygenHandler( 56 uint32 key_size_in_bits, 57 const std::string& challenge_string, 58 const GURL& url, 59 const base::Callback<void(scoped_ptr<net::KeygenHandler>)>& callback); 60 61 // Returns true if microphone access is allowed for |origin|. Used to 62 // determine what level of authorization is given to |origin| to access 63 // resource metadata. 64 virtual bool AllowMicAccess(const GURL& origin) = 0; 65 66 // Returns true if web camera access is allowed for |origin|. Used to 67 // determine what level of authorization is given to |origin| to access 68 // resource metadata. 69 virtual bool AllowCameraAccess(const GURL& origin) = 0; 70 71 // Returns a callback that can be invoked to get a random salt 72 // string that is used for creating media device IDs. The salt 73 // should be stored in the current user profile and should be reset 74 // if cookies are cleared. The default is an empty string. 75 // 76 // It is safe to hold on to the callback returned and use it without 77 // regard to the lifetime of ResourceContext, although in general 78 // you should not use it long after the profile has been destroyed. 79 // 80 // TODO(joi): We don't think it should be unnecessary to use this 81 // after ResourceContext goes away. There is likely an underying bug 82 // in the lifetime of ProfileIOData vs. ResourceProcessHost, where 83 // sometimes ProfileIOData has gone away before RPH has finished 84 // being torn down (on the IO thread). The current interface that 85 // allows using the salt object after ResourceContext has gone away 86 // was put in place to fix http://crbug.com/341211 but I intend to 87 // try to figure out how the lifetime should be fixed properly. The 88 // original interface was just a method that returns a string. 89 // 90 // TODO(perkj): Make this method pure virtual when crbug/315022 is 91 // fixed. 92 typedef base::Callback<std::string()> SaltCallback; 93 virtual SaltCallback GetMediaDeviceIDSalt(); 94 }; 95 96 } // namespace content 97 98 #endif // CONTENT_PUBLIC_BROWSER_RESOURCE_CONTEXT_H_ 99
