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// Copyright 2015 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/permissions/permission_manager.h"
#include "base/callback.h"
#include "chrome/browser/content_settings/permission_context_base.h"
#include "chrome/browser/permissions/permission_context.h"
#include "chrome/browser/permissions/permission_request_id.h"
#include "chrome/browser/profiles/profile.h"
#include "components/content_settings/core/browser/host_content_settings_map.h"
#include "content/public/browser/permission_type.h"
#include "content/public/browser/render_frame_host.h"
#include "content/public/browser/render_process_host.h"
#include "content/public/browser/web_contents.h"
using content::PermissionStatus;
using content::PermissionType;
namespace {
// Helper method to convert ContentSetting to PermissionStatus.
PermissionStatus ContentSettingToPermissionStatus(ContentSetting setting) {
switch (setting) {
case CONTENT_SETTING_ALLOW:
case CONTENT_SETTING_SESSION_ONLY:
return content::PERMISSION_STATUS_GRANTED;
case CONTENT_SETTING_BLOCK:
return content::PERMISSION_STATUS_DENIED;
case CONTENT_SETTING_ASK:
return content::PERMISSION_STATUS_ASK;
case CONTENT_SETTING_DETECT_IMPORTANT_CONTENT:
case CONTENT_SETTING_DEFAULT:
case CONTENT_SETTING_NUM_SETTINGS:
break;
}
NOTREACHED();
return content::PERMISSION_STATUS_DENIED;
}
// Helper method to convert PermissionType to ContentSettingType.
ContentSettingsType PermissionTypeToContentSetting(PermissionType permission) {
switch (permission) {
case PermissionType::MIDI_SYSEX:
return CONTENT_SETTINGS_TYPE_MIDI_SYSEX;
case PermissionType::PUSH_MESSAGING:
return CONTENT_SETTINGS_TYPE_PUSH_MESSAGING;
case PermissionType::NOTIFICATIONS:
return CONTENT_SETTINGS_TYPE_NOTIFICATIONS;
case PermissionType::GEOLOCATION:
return CONTENT_SETTINGS_TYPE_GEOLOCATION;
case PermissionType::PROTECTED_MEDIA_IDENTIFIER:
#if defined(OS_ANDROID) || defined(OS_CHROMEOS)
return CONTENT_SETTINGS_TYPE_PROTECTED_MEDIA_IDENTIFIER;
#else
NOTIMPLEMENTED();
break;
#endif
case PermissionType::NUM:
// This will hit the NOTREACHED below.
break;
}
NOTREACHED() << "Unknown content setting for permission "
<< static_cast<int>(permission);
return CONTENT_SETTINGS_TYPE_DEFAULT;
}
// Helper method that wraps a callback a void(PermissionStatus)
// callback into a void(ContentSetting) callback.
void PermissionStatusCallbackWrapper(
const base::Callback<void(PermissionStatus)>& callback,
ContentSetting content_setting) {
callback.Run(ContentSettingToPermissionStatus(content_setting));
}
} // anonymous namespace
struct PermissionManager::Subscription {
PermissionType permission;
GURL requesting_origin;
GURL embedding_origin;
base::Callback<void(PermissionStatus)> callback;
ContentSetting current_value;
};
PermissionManager::PermissionManager(Profile* profile)
: profile_(profile) {
}
PermissionManager::~PermissionManager() {
if (!subscriptions_.IsEmpty())
profile_->GetHostContentSettingsMap()->RemoveObserver(this);
}
void PermissionManager::RequestPermission(
PermissionType permission,
content::RenderFrameHost* render_frame_host,
int request_id,
const GURL& requesting_origin,
bool user_gesture,
const base::Callback<void(PermissionStatus)>& callback) {
PermissionContextBase* context = PermissionContext::Get(profile_, permission);
if (!context) {
callback.Run(content::PERMISSION_STATUS_DENIED);
return;
}
int render_process_id = render_frame_host->GetProcess()->GetID();
int render_frame_id = render_frame_host->GetRoutingID();
const PermissionRequestID request(render_process_id,
render_frame_id,
request_id,
requesting_origin);
context->RequestPermission(
content::WebContents::FromRenderFrameHost(render_frame_host),
request, requesting_origin, user_gesture,
base::Bind(&PermissionStatusCallbackWrapper,
callback));
}
void PermissionManager::CancelPermissionRequest(
PermissionType permission,
content::RenderFrameHost* render_frame_host,
int request_id,
const GURL& requesting_origin) {
PermissionContextBase* context = PermissionContext::Get(profile_, permission);
if (!context)
return;
int render_process_id = render_frame_host->GetProcess()->GetID();
int render_frame_id = render_frame_host->GetRoutingID();
const PermissionRequestID request(render_process_id,
render_frame_id,
request_id,
requesting_origin);
context->CancelPermissionRequest(
content::WebContents::FromRenderFrameHost(render_frame_host), request);
}
void PermissionManager::ResetPermission(PermissionType permission,
const GURL& requesting_origin,
const GURL& embedding_origin) {
PermissionContextBase* context = PermissionContext::Get(profile_, permission);
if (!context)
return;
context->ResetPermission(requesting_origin.GetOrigin(),
embedding_origin.GetOrigin());
}
PermissionStatus PermissionManager::GetPermissionStatus(
PermissionType permission,
const GURL& requesting_origin,
const GURL& embedding_origin) {
PermissionContextBase* context = PermissionContext::Get(profile_, permission);
if (!context)
return content::PERMISSION_STATUS_DENIED;
return ContentSettingToPermissionStatus(
context->GetPermissionStatus(requesting_origin.GetOrigin(),
embedding_origin.GetOrigin()));
}
void PermissionManager::RegisterPermissionUsage(PermissionType permission,
const GURL& requesting_origin,
const GURL& embedding_origin) {
profile_->GetHostContentSettingsMap()->UpdateLastUsage(
requesting_origin,
embedding_origin,
PermissionTypeToContentSetting(permission));
}
int PermissionManager::SubscribePermissionStatusChange(
PermissionType permission,
const GURL& requesting_origin,
const GURL& embedding_origin,
const base::Callback<void(PermissionStatus)>& callback) {
if (subscriptions_.IsEmpty())
profile_->GetHostContentSettingsMap()->AddObserver(this);
Subscription* subscription = new Subscription();
subscription->permission = permission;
subscription->requesting_origin = requesting_origin;
subscription->embedding_origin = embedding_origin;
subscription->callback = callback;
subscription->current_value = PermissionContext::Get(profile_, permission)
->GetPermissionStatus(subscription->requesting_origin,
subscription->embedding_origin);
return subscriptions_.Add(subscription);
}
void PermissionManager::UnsubscribePermissionStatusChange(int subscription_id) {
// Whether |subscription_id| is known will be checked by the Remove() call.
subscriptions_.Remove(subscription_id);
if (subscriptions_.IsEmpty())
profile_->GetHostContentSettingsMap()->RemoveObserver(this);
}
void PermissionManager::OnContentSettingChanged(
const ContentSettingsPattern& primary_pattern,
const ContentSettingsPattern& secondary_pattern,
ContentSettingsType content_type,
std::string resource_identifier) {
std::list<base::Closure> callbacks;
for (SubscriptionsMap::iterator iter(&subscriptions_);
!iter.IsAtEnd(); iter.Advance()) {
Subscription* subscription = iter.GetCurrentValue();
if (PermissionTypeToContentSetting(subscription->permission) !=
content_type) {
continue;
}
if (primary_pattern.IsValid() &&
!primary_pattern.Matches(subscription->requesting_origin))
continue;
if (secondary_pattern.IsValid() &&
!secondary_pattern.Matches(subscription->embedding_origin))
continue;
ContentSetting new_value =
PermissionContext::Get(profile_, subscription->permission)
->GetPermissionStatus(subscription->requesting_origin,
subscription->embedding_origin);
if (subscription->current_value == new_value)
continue;
subscription->current_value = new_value;
// Add the callback to |callbacks| which will be run after the loop to
// prevent re-entrance issues.
callbacks.push_back(
base::Bind(subscription->callback,
ContentSettingToPermissionStatus(new_value)));
}
for (const auto& callback : callbacks)
callback.Run();
}
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