src/chrome/browser/media/chrome_midi_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/chrome_midi_permission_context.h"
   6
   7 #include "base/prefs/pref_service.h"
   8 #include "chrome/browser/content_settings/host_content_settings_map.h"
   9 #include "chrome/browser/content_settings/permission_queue_controller.h"
  10 #include "chrome/browser/content_settings/permission_request_id.h"
  11 #include "chrome/browser/content_settings/tab_specific_content_settings.h"
  12 #include "chrome/browser/profiles/profile.h"
  13 #include "chrome/browser/tab_contents/tab_util.h"
  14 #include "content/public/browser/browser_thread.h"
  15 #include "content/public/browser/web_contents.h"
  16
  17 ChromeMIDIPermissionContext::ChromeMIDIPermissionContext(Profile* profile)
  18     : profile_(profile),
  19       shutting_down_(false) {
  20   DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
  21 }
  22
  23 ChromeMIDIPermissionContext::~ChromeMIDIPermissionContext() {
  24   DCHECK(!permission_queue_controller_);
  25   DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
  26 }
  27
  28 void ChromeMIDIPermissionContext::Shutdown() {
  29   DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
  30   permission_queue_controller_.reset();
  31   shutting_down_ = true;
  32 }
  33
  34 void ChromeMIDIPermissionContext::RequestMIDISysExPermission(
  35     int render_process_id,
  36     int render_view_id,
  37     int bridge_id,
  38     const GURL& requesting_frame,
  39     const content::BrowserContext::MIDISysExPermissionCallback& callback) {
  40   DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
  41   DCHECK(!shutting_down_);
  42
  43   // TODO(toyoshim): Support Extension's manifest declared permission.
  44   // http://crbug.com/266338 .
  45
  46   content::WebContents* web_contents =
  47     tab_util::GetWebContentsByID(render_process_id, render_view_id);
  48
  49   // The page doesn't exist any more.
  50   if (!web_contents)
  51     return;
  52
  53   const PermissionRequestID id(render_process_id, render_view_id, bridge_id, 0);
  54
  55   GURL embedder = web_contents->GetURL();
  56   // |requesting_frame| can be empty and invalid when the frame is a local
  57   // file. Here local files should be granted to show an infobar.
  58   // Any user's action will not be stored to content settings data base.
  59   if ((!requesting_frame.is_valid() && !requesting_frame.is_empty()) ||
  60       !embedder.is_valid()) {
  61     LOG(WARNING) << "Attempt to use MIDI sysex from an invalid URL: "
  62                  << requesting_frame << "," << embedder
  63                  << " (Web MIDI is not supported in popups)";
  64     PermissionDecided(id, requesting_frame, embedder, callback, false);
  65     return;
  66   }
  67
  68   DecidePermission(id, requesting_frame, embedder, callback);
  69 }
  70
  71 void ChromeMIDIPermissionContext::CancelMIDISysExPermissionRequest(
  72     int render_process_id,
  73     int render_view_id,
  74     int bridge_id,
  75     const GURL& requesting_frame) {
  76   CancelPendingInfobarRequest(
  77       PermissionRequestID(render_process_id, render_view_id, bridge_id, 0));
  78 }
  79
  80 void ChromeMIDIPermissionContext::DecidePermission(
  81     const PermissionRequestID& id,
  82     const GURL& requesting_frame,
  83     const GURL& embedder,
  84     const content::BrowserContext::MIDISysExPermissionCallback& callback) {
  85   DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
  86
  87   ContentSetting content_setting =
  88       profile_->GetHostContentSettingsMap()->GetContentSetting(
  89           requesting_frame,
  90           embedder,
  91           CONTENT_SETTINGS_TYPE_MIDI_SYSEX,
  92           std::string());
  93   switch (content_setting) {
  94     case CONTENT_SETTING_BLOCK:
  95       PermissionDecided(id, requesting_frame, embedder, callback, false);
  96       break;
  97     case CONTENT_SETTING_ALLOW:
  98       PermissionDecided(id, requesting_frame, embedder, callback, true);
  99       break;
 100     default:
 101       GetQueueController()->CreateInfoBarRequest(
 102           id, requesting_frame, embedder, base::Bind(
 103               &ChromeMIDIPermissionContext::NotifyPermissionSet,
 104               base::Unretained(this), id, requesting_frame, callback));
 105   }
 106 }
 107
 108 void ChromeMIDIPermissionContext::PermissionDecided(
 109     const PermissionRequestID& id,
 110     const GURL& requesting_frame,
 111     const GURL& embedder,
 112     const content::BrowserContext::MIDISysExPermissionCallback& callback,
 113     bool allowed) {
 114   DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
 115   NotifyPermissionSet(id, requesting_frame, callback, allowed);
 116 }
 117
 118 void ChromeMIDIPermissionContext::NotifyPermissionSet(
 119     const PermissionRequestID& id,
 120     const GURL& requesting_frame,
 121     const content::BrowserContext::MIDISysExPermissionCallback& callback,
 122     bool allowed) {
 123   DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
 124
 125   TabSpecificContentSettings* content_settings =
 126       TabSpecificContentSettings::Get(id.render_process_id(),
 127                                       id.render_view_id());
 128   if (content_settings) {
 129     if (allowed)
 130       content_settings->OnMIDISysExAccessed(requesting_frame);
 131     else
 132       content_settings->OnMIDISysExAccessBlocked(requesting_frame);
 133   }
 134
 135   callback.Run(allowed);
 136 }
 137
 138 PermissionQueueController* ChromeMIDIPermissionContext::GetQueueController() {
 139   if (!permission_queue_controller_) {
 140     permission_queue_controller_.reset(
 141         new PermissionQueueController(profile_,
 142                                       CONTENT_SETTINGS_TYPE_MIDI_SYSEX));
 143   }
 144   return permission_queue_controller_.get();
 145 }
 146
 147 void ChromeMIDIPermissionContext::CancelPendingInfobarRequest(
 148     const PermissionRequestID& id) {
 149   DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
 150   if (shutting_down_)
 151     return;
 152   GetQueueController()->CancelInfoBarRequest(id);
 153 }