src/chrome/browser/media/protected_media_identifier_permission_context.cc

   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 #include "chrome/browser/media/protected_media_identifier_permission_context.h"
   6
   7 #include <functional>
   8 #include <string>
   9 #include <vector>
  10
  11 #include "base/bind.h"
  12 #include "base/prefs/pref_service.h"
  13 #include "base/strings/utf_string_conversions.h"
  14 #include "chrome/browser/content_settings/tab_specific_content_settings.h"
  15 #include "chrome/browser/profiles/profile.h"
  16 #include "chrome/browser/tab_contents/tab_util.h"
  17 #include "chrome/common/pref_names.h"
  18 #include "components/content_settings/core/browser/host_content_settings_map.h"
  19 #include "components/content_settings/core/common/permission_request_id.h"
  20 #include "content/public/browser/browser_thread.h"
  21 #include "content/public/browser/render_process_host.h"
  22 #include "content/public/browser/render_view_host.h"
  23 #include "content/public/browser/web_contents.h"
  24
  25 #if defined(ENABLE_EXTENSIONS)
  26 #include "chrome/browser/extensions/extension_service.h"
  27 #include "extensions/browser/extension_system.h"
  28 #include "extensions/browser/suggest_permission_util.h"
  29 #include "extensions/browser/view_type_utils.h"
  30 #include "extensions/common/extension.h"
  31
  32 using extensions::APIPermission;
  33 #endif
  34
  35 ProtectedMediaIdentifierPermissionContext::
  36     ProtectedMediaIdentifierPermissionContext(Profile* profile)
  37     : profile_(profile), shutting_down_(false) {}
  38
  39 ProtectedMediaIdentifierPermissionContext::
  40     ~ProtectedMediaIdentifierPermissionContext() {
  41   // ProtectedMediaIdentifierPermissionContext may be destroyed on either
  42   // the UI thread or the IO thread, but the PermissionQueueController must have
  43   // been destroyed on the UI thread.
  44   DCHECK(!permission_queue_controller_.get());
  45 }
  46
  47 void ProtectedMediaIdentifierPermissionContext::
  48     RequestProtectedMediaIdentifierPermission(
  49         content::WebContents* web_contents,
  50         const GURL& origin,
  51         base::Callback<void(bool)> result_callback) {
  52   DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
  53   if (shutting_down_)
  54     return;
  55
  56   int render_process_id = web_contents->GetRenderProcessHost()->GetID();
  57   int render_view_id = web_contents->GetRenderViewHost()->GetRoutingID();
  58
  59   const PermissionRequestID id(
  60       render_process_id, render_view_id, 0, origin);
  61
  62 #if defined(ENABLE_EXTENSIONS)
  63   if (extensions::GetViewType(web_contents) !=
  64       extensions::VIEW_TYPE_TAB_CONTENTS) {
  65     // The tab may have gone away, or the request may not be from a tab at all.
  66     LOG(WARNING)
  67         << "Attempt to use protected media identifier in tabless renderer: "
  68         << id.ToString()
  69         << " (can't prompt user without a visible tab)";
  70     NotifyPermissionSet(id, origin, result_callback, false);
  71     return;
  72   }
  73 #endif
  74
  75   GURL embedder = web_contents->GetLastCommittedURL();
  76   if (!origin.is_valid() || !embedder.is_valid()) {
  77     LOG(WARNING)
  78         << "Attempt to use protected media identifier from an invalid URL: "
  79         << origin << "," << embedder
  80         << " (proteced media identifier is not supported in popups)";
  81     NotifyPermissionSet(id, origin, result_callback, false);
  82     return;
  83   }
  84
  85   content::RenderViewHost* rvh = web_contents->GetRenderViewHost();
  86   DecidePermission(id, origin, embedder, rvh, result_callback);
  87 }
  88
  89 void ProtectedMediaIdentifierPermissionContext::
  90     CancelProtectedMediaIdentifierPermissionRequests(
  91         int render_process_id,
  92         int render_view_id,
  93         const GURL& origin) {
  94   CancelPendingInfobarRequests(
  95       render_process_id, render_view_id, origin);
  96 }
  97
  98 void ProtectedMediaIdentifierPermissionContext::DecidePermission(
  99     const PermissionRequestID& id,
 100     const GURL& origin,
 101     const GURL& embedder,
 102     content::RenderViewHost* rvh,
 103     const base::Callback<void(bool)>& callback) {
 104   DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
 105
 106 #if defined(OS_ANDROID)
 107   // Check if the protected media identifier master switch is disabled.
 108   if (!profile()->GetPrefs()->GetBoolean(
 109         prefs::kProtectedMediaIdentifierEnabled)) {
 110     PermissionDecided(id, origin, embedder, callback, false);
 111     return;
 112   }
 113 #endif
 114
 115   ContentSetting content_setting =
 116      profile_->GetHostContentSettingsMap()->GetContentSetting(
 117           origin,
 118           embedder,
 119           CONTENT_SETTINGS_TYPE_PROTECTED_MEDIA_IDENTIFIER,
 120           std::string());
 121   switch (content_setting) {
 122     case CONTENT_SETTING_BLOCK:
 123       PermissionDecided(id, origin, embedder, callback, false);
 124       break;
 125     case CONTENT_SETTING_ALLOW:
 126       PermissionDecided(id, origin, embedder, callback, true);
 127       break;
 128     case CONTENT_SETTING_ASK:
 129       QueueController()->CreateInfoBarRequest(
 130           id,
 131           origin,
 132           embedder,
 133           base::Bind(&ProtectedMediaIdentifierPermissionContext::
 134                           NotifyPermissionSet,
 135                      base::Unretained(this),
 136                      id,
 137                      origin,
 138                      callback));
 139       break;
 140     default:
 141       NOTREACHED();
 142   }
 143 }
 144
 145 void ProtectedMediaIdentifierPermissionContext::ShutdownOnUIThread() {
 146   DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
 147   permission_queue_controller_.reset();
 148   shutting_down_ = true;
 149 }
 150
 151 void ProtectedMediaIdentifierPermissionContext::PermissionDecided(
 152     const PermissionRequestID& id,
 153     const GURL& origin,
 154     const GURL& embedder,
 155     const base::Callback<void(bool)>& callback,
 156     bool allowed) {
 157   NotifyPermissionSet(id, origin, callback, allowed);
 158 }
 159
 160 void ProtectedMediaIdentifierPermissionContext::NotifyPermissionSet(
 161     const PermissionRequestID& id,
 162     const GURL& origin,
 163     const base::Callback<void(bool)>& callback,
 164     bool allowed) {
 165   DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
 166
 167   // WebContents may have gone away.
 168   TabSpecificContentSettings* content_settings =
 169       TabSpecificContentSettings::Get(id.render_process_id(),
 170                                       id.render_view_id());
 171   if (content_settings) {
 172     content_settings->OnProtectedMediaIdentifierPermissionSet(
 173         origin.GetOrigin(), allowed);
 174   }
 175
 176   callback.Run(allowed);
 177 }
 178
 179 PermissionQueueController*
 180     ProtectedMediaIdentifierPermissionContext::QueueController() {
 181   DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
 182   DCHECK(!shutting_down_);
 183   if (!permission_queue_controller_)
 184     permission_queue_controller_.reset(CreateQueueController());
 185   return permission_queue_controller_.get();
 186 }
 187
 188 PermissionQueueController*
 189     ProtectedMediaIdentifierPermissionContext::CreateQueueController() {
 190   DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
 191   return new PermissionQueueController(
 192       profile(), CONTENT_SETTINGS_TYPE_PROTECTED_MEDIA_IDENTIFIER);
 193 }
 194
 195 void
 196 ProtectedMediaIdentifierPermissionContext::CancelPendingInfobarRequests(
 197     int render_process_id,
 198     int render_view_id,
 199     const GURL& origin) {
 200   if (!content::BrowserThread::CurrentlyOn(content::BrowserThread::UI)) {
 201     content::BrowserThread::PostTask(
 202         content::BrowserThread::UI,
 203         FROM_HERE,
 204         base::Bind(&ProtectedMediaIdentifierPermissionContext::
 205                         CancelPendingInfobarRequests,
 206                    this,
 207                    render_process_id,
 208                    render_view_id,
 209                    origin));
 210     return;
 211   }
 212   DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
 213   if (shutting_down_)
 214     return;
 215   QueueController()->CancelInfoBarRequest(
 216       PermissionRequestID(render_process_id, render_view_id, 0,
 217                           origin));
 218 }