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// Copyright (c) 2012 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 "content/browser/geolocation/geolocation_dispatcher_host.h"
#include <utility>
#include "base/bind.h"
#include "base/metrics/histogram.h"
#include "content/browser/frame_host/render_frame_host_impl.h"
#include "content/browser/renderer_host/render_message_filter.h"
#include "content/browser/renderer_host/render_process_host_impl.h"
#include "content/browser/renderer_host/render_view_host_impl.h"
#include "content/browser/web_contents/web_contents_impl.h"
#include "content/public/browser/browser_context.h"
#include "content/public/browser/geolocation_permission_context.h"
#include "content/public/common/geoposition.h"
#include "content/common/geolocation_messages.h"
namespace content {
namespace {
// Geoposition error codes for reporting in UMA.
enum GeopositionErrorCode {
// NOTE: Do not renumber these as that would confuse interpretation of
// previously logged data. When making changes, also update the enum list
// in tools/metrics/histograms/histograms.xml to keep it in sync.
// There was no error.
GEOPOSITION_ERROR_CODE_NONE = 0,
// User denied use of geolocation.
GEOPOSITION_ERROR_CODE_PERMISSION_DENIED = 1,
// Geoposition could not be determined.
GEOPOSITION_ERROR_CODE_POSITION_UNAVAILABLE = 2,
// Timeout.
GEOPOSITION_ERROR_CODE_TIMEOUT = 3,
// NOTE: Add entries only immediately above this line.
GEOPOSITION_ERROR_CODE_COUNT = 4
};
void RecordGeopositionErrorCode(Geoposition::ErrorCode error_code) {
GeopositionErrorCode code = GEOPOSITION_ERROR_CODE_NONE;
switch (error_code) {
case Geoposition::ERROR_CODE_NONE:
code = GEOPOSITION_ERROR_CODE_NONE;
break;
case Geoposition::ERROR_CODE_PERMISSION_DENIED:
code = GEOPOSITION_ERROR_CODE_PERMISSION_DENIED;
break;
case Geoposition::ERROR_CODE_POSITION_UNAVAILABLE:
code = GEOPOSITION_ERROR_CODE_POSITION_UNAVAILABLE;
break;
case Geoposition::ERROR_CODE_TIMEOUT:
code = GEOPOSITION_ERROR_CODE_TIMEOUT;
break;
}
UMA_HISTOGRAM_ENUMERATION("Geolocation.LocationUpdate.ErrorCode",
code,
GEOPOSITION_ERROR_CODE_COUNT);
}
void SendGeolocationPermissionResponse(int render_process_id,
int render_frame_id,
int bridge_id,
bool allowed) {
RenderFrameHost* render_frame_host =
RenderFrameHost::FromID(render_process_id, render_frame_id);
if (!render_frame_host)
return;
render_frame_host->Send(
new GeolocationMsg_PermissionSet(render_frame_id, bridge_id, allowed));
if (allowed)
GeolocationProviderImpl::GetInstance()->UserDidOptIntoLocationServices();
}
} // namespace
GeolocationDispatcherHost::GeolocationDispatcherHost(
WebContents* web_contents)
: WebContentsObserver(web_contents),
paused_(false) {
// This is initialized by WebContentsImpl. Do not add any non-trivial
// initialization here, defer to OnStartUpdating which is triggered whenever
// a javascript geolocation object is actually initialized.
}
GeolocationDispatcherHost::~GeolocationDispatcherHost() {
}
void GeolocationDispatcherHost::RenderFrameDeleted(
RenderFrameHost* render_frame_host) {
OnStopUpdating(render_frame_host);
}
void GeolocationDispatcherHost::RenderViewHostChanged(
RenderViewHost* old_host,
RenderViewHost* new_host) {
updating_frames_.clear();
paused_ = false;
geolocation_subscription_.reset();
}
bool GeolocationDispatcherHost::OnMessageReceived(
const IPC::Message& msg, RenderFrameHost* render_frame_host) {
bool handled = true;
IPC_BEGIN_MESSAGE_MAP_WITH_PARAM(GeolocationDispatcherHost, msg,
render_frame_host)
IPC_MESSAGE_HANDLER(GeolocationHostMsg_RequestPermission,
OnRequestPermission)
IPC_MESSAGE_HANDLER(GeolocationHostMsg_CancelPermissionRequest,
OnCancelPermissionRequest)
IPC_MESSAGE_HANDLER(GeolocationHostMsg_StartUpdating, OnStartUpdating)
IPC_MESSAGE_HANDLER(GeolocationHostMsg_StopUpdating, OnStopUpdating)
IPC_MESSAGE_UNHANDLED(handled = false)
IPC_END_MESSAGE_MAP()
return handled;
}
void GeolocationDispatcherHost::OnLocationUpdate(
const Geoposition& geoposition) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
RecordGeopositionErrorCode(geoposition.error_code);
if (paused_)
return;
for (std::map<RenderFrameHost*, bool>::iterator i = updating_frames_.begin();
i != updating_frames_.end(); ++i) {
i->first->Send(new GeolocationMsg_PositionUpdated(
i->first->GetRoutingID(), geoposition));
}
}
void GeolocationDispatcherHost::OnRequestPermission(
RenderFrameHost* render_frame_host,
int bridge_id,
const GURL& requesting_frame,
bool user_gesture) {
GeolocationPermissionContext* context =
web_contents()->GetBrowserContext()->GetGeolocationPermissionContext();
int render_process_id = render_frame_host->GetProcess()->GetID();
int render_frame_id = render_frame_host->GetRoutingID();
if (context) {
context->RequestGeolocationPermission(
web_contents(),
bridge_id,
requesting_frame,
user_gesture,
base::Bind(&SendGeolocationPermissionResponse,
render_process_id,
render_frame_id,
bridge_id));
} else {
SendGeolocationPermissionResponse(
render_process_id, render_frame_id, bridge_id, true);
}
}
void GeolocationDispatcherHost::OnCancelPermissionRequest(
RenderFrameHost* render_frame_host,
int bridge_id,
const GURL& requesting_frame) {
GeolocationPermissionContext* context =
web_contents()->GetBrowserContext()->GetGeolocationPermissionContext();
if (context) {
context->CancelGeolocationPermissionRequest(
web_contents(), bridge_id, requesting_frame);
}
}
void GeolocationDispatcherHost::OnStartUpdating(
RenderFrameHost* render_frame_host,
const GURL& requesting_frame,
bool enable_high_accuracy) {
// StartUpdating() can be invoked as a result of high-accuracy mode
// being enabled / disabled. No need to record the dispatcher again.
UMA_HISTOGRAM_BOOLEAN(
"Geolocation.GeolocationDispatcherHostImpl.EnableHighAccuracy",
enable_high_accuracy);
updating_frames_[render_frame_host] = enable_high_accuracy;
RefreshGeolocationOptions();
}
void GeolocationDispatcherHost::OnStopUpdating(
RenderFrameHost* render_frame_host) {
updating_frames_.erase(render_frame_host);
RefreshGeolocationOptions();
}
void GeolocationDispatcherHost::PauseOrResume(bool should_pause) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
paused_ = should_pause;
RefreshGeolocationOptions();
}
void GeolocationDispatcherHost::RefreshGeolocationOptions() {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
if (updating_frames_.empty() || paused_) {
geolocation_subscription_.reset();
return;
}
bool high_accuracy = false;
for (std::map<RenderFrameHost*, bool>::iterator i =
updating_frames_.begin(); i != updating_frames_.end(); ++i) {
if (i->second) {
high_accuracy = true;
break;
}
}
geolocation_subscription_ = GeolocationProvider::GetInstance()->
AddLocationUpdateCallback(
base::Bind(&GeolocationDispatcherHost::OnLocationUpdate,
base::Unretained(this)),
high_accuracy);
}
} // namespace content
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