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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 "chrome/browser/renderer_host/pepper/pepper_flash_browser_host.h"
#include "base/time/time.h"
#include "build/build_config.h"
#include "chrome/browser/content_settings/cookie_settings_factory.h"
#include "chrome/browser/profiles/profile.h"
#include "components/content_settings/core/browser/cookie_settings.h"
#include "content/public/browser/browser_context.h"
#include "content/public/browser/browser_ppapi_host.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/render_process_host.h"
#include "ipc/ipc_message_macros.h"
#include "ppapi/c/pp_errors.h"
#include "ppapi/c/private/ppb_flash.h"
#include "ppapi/host/dispatch_host_message.h"
#include "ppapi/proxy/ppapi_messages.h"
#include "ppapi/proxy/resource_message_params.h"
#include "ppapi/shared_impl/time_conversion.h"
#include "url/gurl.h"
#if defined(OS_WIN)
#include <windows.h>
#elif defined(OS_MACOSX)
#include <CoreServices/CoreServices.h>
#endif
using content::BrowserPpapiHost;
using content::BrowserThread;
using content::RenderProcessHost;
namespace chrome {
namespace {
// Get the CookieSettings on the UI thread for the given render process ID.
scoped_refptr<content_settings::CookieSettings> GetCookieSettings(
int render_process_id) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
RenderProcessHost* render_process_host =
RenderProcessHost::FromID(render_process_id);
if (render_process_host && render_process_host->GetBrowserContext()) {
Profile* profile =
Profile::FromBrowserContext(render_process_host->GetBrowserContext());
return CookieSettingsFactory::GetForProfile(profile);
}
return NULL;
}
} // namespace
PepperFlashBrowserHost::PepperFlashBrowserHost(BrowserPpapiHost* host,
PP_Instance instance,
PP_Resource resource)
: ResourceHost(host->GetPpapiHost(), instance, resource),
host_(host),
weak_factory_(this) {
int unused;
host->GetRenderFrameIDsForInstance(instance, &render_process_id_, &unused);
}
PepperFlashBrowserHost::~PepperFlashBrowserHost() {}
int32_t PepperFlashBrowserHost::OnResourceMessageReceived(
const IPC::Message& msg,
ppapi::host::HostMessageContext* context) {
PPAPI_BEGIN_MESSAGE_MAP(PepperFlashBrowserHost, msg)
PPAPI_DISPATCH_HOST_RESOURCE_CALL_0(PpapiHostMsg_Flash_UpdateActivity,
OnUpdateActivity)
PPAPI_DISPATCH_HOST_RESOURCE_CALL(PpapiHostMsg_Flash_GetLocalTimeZoneOffset,
OnGetLocalTimeZoneOffset)
PPAPI_DISPATCH_HOST_RESOURCE_CALL_0(
PpapiHostMsg_Flash_GetLocalDataRestrictions, OnGetLocalDataRestrictions)
PPAPI_END_MESSAGE_MAP()
return PP_ERROR_FAILED;
}
int32_t PepperFlashBrowserHost::OnUpdateActivity(
ppapi::host::HostMessageContext* host_context) {
#if defined(OS_WIN)
// Reading then writing back the same value to the screensaver timeout system
// setting resets the countdown which prevents the screensaver from turning
// on "for a while". As long as the plugin pings us with this message faster
// than the screensaver timeout, it won't go on.
int value = 0;
if (SystemParametersInfo(SPI_GETSCREENSAVETIMEOUT, 0, &value, 0))
SystemParametersInfo(SPI_SETSCREENSAVETIMEOUT, value, NULL, 0);
#elif defined(OS_MACOSX)
UpdateSystemActivity(OverallAct);
#else
// TODO(brettw) implement this for other platforms.
#endif
return PP_OK;
}
int32_t PepperFlashBrowserHost::OnGetLocalTimeZoneOffset(
ppapi::host::HostMessageContext* host_context,
const base::Time& t) {
// The reason for this processing being in the browser process is that on
// Linux, the localtime calls require filesystem access prohibited by the
// sandbox.
host_context->reply_msg = PpapiPluginMsg_Flash_GetLocalTimeZoneOffsetReply(
ppapi::PPGetLocalTimeZoneOffset(t));
return PP_OK;
}
int32_t PepperFlashBrowserHost::OnGetLocalDataRestrictions(
ppapi::host::HostMessageContext* context) {
// Getting the Flash LSO settings requires using the CookieSettings which
// belong to the profile which lives on the UI thread. We lazily initialize
// |cookie_settings_| by grabbing the reference from the UI thread and then
// call |GetLocalDataRestrictions| with it.
GURL document_url = host_->GetDocumentURLForInstance(pp_instance());
GURL plugin_url = host_->GetPluginURLForInstance(pp_instance());
if (cookie_settings_.get()) {
GetLocalDataRestrictions(context->MakeReplyMessageContext(),
document_url,
plugin_url,
cookie_settings_);
} else {
BrowserThread::PostTaskAndReplyWithResult(
BrowserThread::UI,
FROM_HERE,
base::Bind(&GetCookieSettings, render_process_id_),
base::Bind(&PepperFlashBrowserHost::GetLocalDataRestrictions,
weak_factory_.GetWeakPtr(),
context->MakeReplyMessageContext(),
document_url,
plugin_url));
}
return PP_OK_COMPLETIONPENDING;
}
void PepperFlashBrowserHost::GetLocalDataRestrictions(
ppapi::host::ReplyMessageContext reply_context,
const GURL& document_url,
const GURL& plugin_url,
scoped_refptr<content_settings::CookieSettings> cookie_settings) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
// Lazily initialize |cookie_settings_|. The cookie settings are thread-safe
// ref-counted so as long as we hold a reference to them we can safely access
// them on the IO thread.
if (!cookie_settings_.get()) {
cookie_settings_ = cookie_settings;
} else {
DCHECK(cookie_settings_.get() == cookie_settings.get());
}
PP_FlashLSORestrictions restrictions = PP_FLASHLSORESTRICTIONS_NONE;
if (cookie_settings_.get() && document_url.is_valid() &&
plugin_url.is_valid()) {
if (!cookie_settings_->IsReadingCookieAllowed(document_url, plugin_url))
restrictions = PP_FLASHLSORESTRICTIONS_BLOCK;
else if (cookie_settings_->IsCookieSessionOnly(plugin_url))
restrictions = PP_FLASHLSORESTRICTIONS_IN_MEMORY;
}
SendReply(reply_context,
PpapiPluginMsg_Flash_GetLocalDataRestrictionsReply(
static_cast<int32_t>(restrictions)));
}
} // namespace chrome
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