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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 #include "chrome/browser/renderer_host/pepper/flash_lso_settings_helper.h" |
| 6 |
| 7 #include "chrome/browser/profiles/profile.h" |
| 8 #include "chrome/common/chrome_notification_types.h" |
| 9 #include "content/public/browser/browser_context.h" |
| 10 #include "content/public/browser/browser_thread.h" |
| 11 #include "content/public/browser/content_browser_client.h" |
| 12 #include "content/public/browser/notification_source.h" |
| 13 #include "content/public/browser/render_process_host.h" |
| 14 #include "content/public/browser/resource_context.h" |
| 15 #include "googleurl/src/gurl.h" |
| 16 |
| 17 using content::BrowserThread; |
| 18 using content::RenderProcessHost; |
| 19 using content::ResourceContext; |
| 20 |
| 21 namespace chrome { |
| 22 |
| 23 namespace { |
| 24 |
| 25 const PP_FlashLSORestrictions kDefaultLSORestrictions = |
| 26 PP_FLASHLSORESTRICTIONS_NONE; |
| 27 |
| 28 } // namespace |
| 29 |
| 30 FlashLSOSettingsHelper::FlashLSOSettingsHelper(int render_process_id) |
| 31 : render_process_id_(render_process_id), |
| 32 initialized_(false), |
| 33 resource_context_(NULL) { |
| 34 } |
| 35 |
| 36 FlashLSOSettingsHelper::~FlashLSOSettingsHelper() { |
| 37 } |
| 38 |
| 39 void FlashLSOSettingsHelper::GetLocalDataRestrictions( |
| 40 const GURL& document_url, |
| 41 const GURL& plugin_url, |
| 42 base::Callback<void(PP_FlashLSORestrictions)> callback) { |
| 43 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)); |
| 44 // Getting the local data restrictions needs to be done on the IO thread, |
| 45 // however it relies on the ResourceContext which can only be accessed from |
| 46 // the UI thread. We lazily initialize |resource_context_| by grabbing the |
| 47 // pointer from the UI thread and then call |GetLocalDataRestrictions| with |
| 48 // it. |
| 49 if (initialized_) { |
| 50 GetLocalDataRestrictionsHelper(document_url, plugin_url, callback, |
| 51 resource_context_); |
| 52 } else { |
| 53 BrowserThread::PostTaskAndReplyWithResult(BrowserThread::UI, FROM_HERE, |
| 54 base::Bind(&FlashLSOSettingsHelper::GetResourceContext, this, |
| 55 render_process_id_), |
| 56 base::Bind(&FlashLSOSettingsHelper::GetLocalDataRestrictionsHelper, |
| 57 this, document_url, plugin_url, callback)); |
| 58 } |
| 59 } |
| 60 |
| 61 void FlashLSOSettingsHelper::GetLocalDataRestrictionsHelper( |
| 62 const GURL& document_url, |
| 63 const GURL& plugin_url, |
| 64 base::Callback<void(PP_FlashLSORestrictions)> callback, |
| 65 ResourceContext* resource_context) { |
| 66 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)); |
| 67 |
| 68 if (!initialized_) { |
| 69 initialized_ = true; |
| 70 resource_context_ = resource_context; |
| 71 } |
| 72 |
| 73 if (!resource_context_ || |
| 74 !document_url.is_valid() || !plugin_url.is_valid()) { |
| 75 callback.Run(kDefaultLSORestrictions); |
| 76 return; |
| 77 } |
| 78 |
| 79 content::ContentBrowserClient* client = |
| 80 content::GetContentClient()->browser(); |
| 81 if (!client->AllowPluginLocalDataAccess(document_url, plugin_url, |
| 82 resource_context_)) { |
| 83 callback.Run(PP_FLASHLSORESTRICTIONS_BLOCK); |
| 84 } else if (client->AllowPluginLocalDataSessionOnly(plugin_url, |
| 85 resource_context_)) { |
| 86 callback.Run(PP_FLASHLSORESTRICTIONS_IN_MEMORY); |
| 87 } else { |
| 88 callback.Run(PP_FLASHLSORESTRICTIONS_NONE); |
| 89 } |
| 90 } |
| 91 |
| 92 ResourceContext* FlashLSOSettingsHelper::GetResourceContext( |
| 93 int render_process_id) { |
| 94 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); |
| 95 RenderProcessHost* render_process_host = RenderProcessHost::FromID( |
| 96 render_process_id); |
| 97 if (!render_process_host || !render_process_host->GetBrowserContext()) |
| 98 return NULL; |
| 99 |
| 100 Profile* profile = Profile::FromBrowserContext( |
| 101 render_process_host->GetBrowserContext()); |
| 102 ResourceContext* resource_context = profile->GetResourceContext(); |
| 103 |
| 104 // Register for a notification when the profile is destroyed so that we |
| 105 // don't access the resource context after that. |
| 106 if (registrar_.get()) { |
| 107 // If |registrar_| is already set, we've already registered for a |
| 108 // notification. |
| 109 return resource_context; |
| 110 } |
| 111 registrar_.reset(new content::NotificationRegistrar); |
| 112 registrar_->Add(this, chrome::NOTIFICATION_PROFILE_DESTROYED, |
| 113 content::Source<Profile>(profile)); |
| 114 // Hold a ref to ourselves until the profile is destroyed so that we always |
| 115 // receive the destruction notification. |
| 116 AddRef(); |
| 117 return resource_context; |
| 118 } |
| 119 |
| 120 void FlashLSOSettingsHelper::Observe(int type, |
| 121 const content::NotificationSource& source, |
| 122 const content::NotificationDetails& details) { |
| 123 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); |
| 124 DCHECK(type == chrome::NOTIFICATION_PROFILE_DESTROYED); |
| 125 // The profile associated with this class has been destroyed. We can now |
| 126 // unregister for notifications (by deleting |registrar_|) and post a task |
| 127 // to clear the resource context so that it is no longer used. |
| 128 registrar_.reset(); |
| 129 BrowserThread::PostTask(BrowserThread::IO, FROM_HERE, |
| 130 base::Bind(&FlashLSOSettingsHelper::ClearResourceContext, this)); |
| 131 Release(); // Balances the AddRef in GetResourceContext. |
| 132 } |
| 133 |
| 134 void FlashLSOSettingsHelper::ClearResourceContext() { |
| 135 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)); |
| 136 resource_context_ = NULL; |
| 137 } |
| 138 |
| 139 } // namespace chrome |
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