pepper_flash_drm_host.cc revision 7d4cd473f85ac64c3747c96c277f9e506a0d2246 
1// Copyright (c) 2012 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/renderer_host/pepper/pepper_flash_drm_host.h"
6
7#if defined(OS_WIN)
8#include <Windows.h>
9#endif
10
11#include "base/bind.h"
12#include "base/compiler_specific.h"
13#include "base/logging.h"
14#include "content/public/browser/browser_ppapi_host.h"
15#include "content/public/browser/child_process_security_policy.h"
16#include "content/public/common/pepper_plugin_info.h"
17#include "ppapi/c/pp_errors.h"
18#include "ppapi/host/dispatch_host_message.h"
19#include "ppapi/host/host_message_context.h"
20#include "ppapi/host/ppapi_host.h"
21#include "ppapi/proxy/ppapi_messages.h"
22
23using content::BrowserPpapiHost;
24
25namespace chrome {
26
27namespace {
28const base::FilePath::CharType kVoucherFilename[] =
29    FILE_PATH_LITERAL("plugin.vch");
30}
31
32PepperFlashDRMHost::PepperFlashDRMHost(BrowserPpapiHost* host,
33                                       PP_Instance instance,
34                                       PP_Resource resource)
35    : ppapi::host::ResourceHost(host->GetPpapiHost(), instance, resource),
36      weak_factory_(this){
37  // Grant permissions to read the flash voucher file.
38  int render_process_id, unused;
39  bool success =
40      host->GetRenderViewIDsForInstance(instance, &render_process_id, &unused);
41  base::FilePath plugin_dir = host->GetPluginPath().DirName();
42  DCHECK(!plugin_dir.empty() && success);
43  base::FilePath voucher_file = plugin_dir.Append(
44      base::FilePath(kVoucherFilename));
45  content::ChildProcessSecurityPolicy::GetInstance()->GrantReadFile(
46      render_process_id, voucher_file);
47
48  // Init the DeviceIDFetcher.
49  fetcher_ = new DeviceIDFetcher(render_process_id);
50}
51
52PepperFlashDRMHost::~PepperFlashDRMHost() {
53}
54
55int32_t PepperFlashDRMHost::OnResourceMessageReceived(
56    const IPC::Message& msg,
57    ppapi::host::HostMessageContext* context) {
58  IPC_BEGIN_MESSAGE_MAP(PepperFlashDRMHost, msg)
59    PPAPI_DISPATCH_HOST_RESOURCE_CALL_0(PpapiHostMsg_FlashDRM_GetDeviceID,
60                                        OnHostMsgGetDeviceID)
61    PPAPI_DISPATCH_HOST_RESOURCE_CALL_0(PpapiHostMsg_FlashDRM_GetHmonitor,
62                                        OnHostMsgGetHmonitor)
63  IPC_END_MESSAGE_MAP()
64  return PP_ERROR_FAILED;
65}
66
67int32_t PepperFlashDRMHost::OnHostMsgGetDeviceID(
68    ppapi::host::HostMessageContext* context) {
69  if (!fetcher_->Start(base::Bind(&PepperFlashDRMHost::GotDeviceID,
70                                  weak_factory_.GetWeakPtr(),
71                                  context->MakeReplyMessageContext()))) {
72    return PP_ERROR_INPROGRESS;
73  }
74  return PP_OK_COMPLETIONPENDING;
75}
76
77int32_t PepperFlashDRMHost::OnHostMsgGetHmonitor(
78    ppapi::host::HostMessageContext* context) {
79#if defined(OS_WIN)
80  // TODO(cpu): Get the real HMONITOR. See bug 249135.
81  POINT pt = {1,1};
82  HMONITOR monitor = ::MonitorFromPoint(pt, MONITOR_DEFAULTTOPRIMARY);
83  int64_t monitor_id = reinterpret_cast<int64_t>(monitor);
84  context->reply_msg = PpapiPluginMsg_FlashDRM_GetHmonitorReply(monitor_id);
85  return PP_OK;
86#else
87  return PP_ERROR_FAILED;
88#endif
89}
90
91void PepperFlashDRMHost::GotDeviceID(
92    ppapi::host::ReplyMessageContext reply_context,
93    const std::string& id) {
94  reply_context.params.set_result(
95      id.empty() ? PP_ERROR_FAILED : PP_OK);
96  host()->SendReply(reply_context,
97                    PpapiPluginMsg_FlashDRM_GetDeviceIDReply(id));
98}
99
100}  // namespace chrome
101