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// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/media/protected_media_identifier_permission_context.h"
#include <functional>
#include <string>
#include <vector>
#include "base/bind.h"
#include "base/strings/utf_string_conversions.h"
#include "chrome/browser/content_settings/host_content_settings_map.h"
#include "chrome/browser/content_settings/permission_request_id.h"
#include "chrome/browser/content_settings/tab_specific_content_settings.h"
#include "chrome/browser/extensions/extension_service.h"
#include "chrome/browser/extensions/extension_system.h"
#include "chrome/browser/extensions/suggest_permission_util.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/tab_contents/tab_util.h"
#include "chrome/common/pref_names.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/render_view_host.h"
#include "content/public/browser/web_contents.h"
#include "extensions/browser/view_type_utils.h"
#include "extensions/common/extension.h"
using extensions::APIPermission;
ProtectedMediaIdentifierPermissionContext::
ProtectedMediaIdentifierPermissionContext(Profile* profile)
: profile_(profile), shutting_down_(false) {}
ProtectedMediaIdentifierPermissionContext::
~ProtectedMediaIdentifierPermissionContext() {
// ProtectedMediaIdentifierPermissionContext may be destroyed on either
// the UI thread or the IO thread, but the PermissionQueueController must have
// been destroyed on the UI thread.
DCHECK(!permission_queue_controller_.get());
}
void ProtectedMediaIdentifierPermissionContext::
RequestProtectedMediaIdentifierPermission(
int render_process_id,
int render_view_id,
int bridge_id,
int group_id,
const GURL& requesting_frame,
const base::Callback<void(bool)>& callback) {
DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
if (shutting_down_)
return;
content::WebContents* web_contents =
tab_util::GetWebContentsByID(render_process_id, render_view_id);
const PermissionRequestID id(
render_process_id, render_view_id, bridge_id, group_id);
if (extensions::GetViewType(web_contents) !=
extensions::VIEW_TYPE_TAB_CONTENTS) {
// The tab may have gone away, or the request may not be from a tab at all.
LOG(WARNING)
<< "Attempt to use protected media identifier in tabless renderer: "
<< id.ToString()
<< " (can't prompt user without a visible tab)";
NotifyPermissionSet(id, requesting_frame, callback, false);
return;
}
GURL embedder = web_contents->GetLastCommittedURL();
if (!requesting_frame.is_valid() || !embedder.is_valid()) {
LOG(WARNING)
<< "Attempt to use protected media identifier from an invalid URL: "
<< requesting_frame << "," << embedder
<< " (proteced media identifier is not supported in popups)";
NotifyPermissionSet(id, requesting_frame, callback, false);
return;
}
content::RenderViewHost* rvh = web_contents->GetRenderViewHost();
DecidePermission(id, requesting_frame, embedder, rvh, callback);
}
void ProtectedMediaIdentifierPermissionContext::
CancelProtectedMediaIdentifierPermissionRequests(int group_id) {
CancelPendingInfobarRequests(group_id);
}
void ProtectedMediaIdentifierPermissionContext::DecidePermission(
const PermissionRequestID& id,
const GURL& requesting_frame,
const GURL& embedder,
content::RenderViewHost* rvh,
const base::Callback<void(bool)>& callback) {
DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
#if defined(OS_ANDROID)
// Check if the protected media identifier master switch is disabled.
if (!profile()->GetPrefs()->GetBoolean(
prefs::kProtectedMediaIdentifierEnabled)) {
PermissionDecided(id, requesting_frame, embedder, callback, false);
return;
}
#endif
ContentSetting content_setting =
profile_->GetHostContentSettingsMap()->GetContentSetting(
requesting_frame,
embedder,
CONTENT_SETTINGS_TYPE_PROTECTED_MEDIA_IDENTIFIER,
std::string());
switch (content_setting) {
case CONTENT_SETTING_BLOCK:
PermissionDecided(id, requesting_frame, embedder, callback, false);
break;
case CONTENT_SETTING_ALLOW:
PermissionDecided(id, requesting_frame, embedder, callback, true);
break;
case CONTENT_SETTING_ASK:
QueueController()->CreateInfoBarRequest(
id,
requesting_frame,
embedder,
base::Bind(&ProtectedMediaIdentifierPermissionContext::
NotifyPermissionSet,
base::Unretained(this),
id,
requesting_frame,
callback));
rvh->DisableFullscreenEncryptedMediaPlayback();
break;
default:
NOTREACHED();
}
}
void ProtectedMediaIdentifierPermissionContext::ShutdownOnUIThread() {
DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
permission_queue_controller_.reset();
shutting_down_ = true;
}
void ProtectedMediaIdentifierPermissionContext::PermissionDecided(
const PermissionRequestID& id,
const GURL& requesting_frame,
const GURL& embedder,
const base::Callback<void(bool)>& callback,
bool allowed) {
NotifyPermissionSet(id, requesting_frame, callback, allowed);
}
void ProtectedMediaIdentifierPermissionContext::NotifyPermissionSet(
const PermissionRequestID& id,
const GURL& requesting_frame,
const base::Callback<void(bool)>& callback,
bool allowed) {
DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
// WebContents may have gone away.
TabSpecificContentSettings* content_settings =
TabSpecificContentSettings::Get(id.render_process_id(),
id.render_view_id());
if (content_settings) {
content_settings->OnProtectedMediaIdentifierPermissionSet(
requesting_frame.GetOrigin(), allowed);
}
callback.Run(allowed);
}
PermissionQueueController*
ProtectedMediaIdentifierPermissionContext::QueueController() {
DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
DCHECK(!shutting_down_);
if (!permission_queue_controller_)
permission_queue_controller_.reset(CreateQueueController());
return permission_queue_controller_.get();
}
PermissionQueueController*
ProtectedMediaIdentifierPermissionContext::CreateQueueController() {
DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
return new PermissionQueueController(
profile(), CONTENT_SETTINGS_TYPE_PROTECTED_MEDIA_IDENTIFIER);
}
void
ProtectedMediaIdentifierPermissionContext::CancelPendingInfobarRequests(
int group_id) {
if (!content::BrowserThread::CurrentlyOn(content::BrowserThread::UI)) {
content::BrowserThread::PostTask(
content::BrowserThread::UI,
FROM_HERE,
base::Bind(&ProtectedMediaIdentifierPermissionContext::
CancelPendingInfobarRequests,
this,
group_id));
return;
}
DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
if (shutting_down_)
return;
QueueController()->CancelInfoBarRequests(group_id);
}
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