tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
Log | Files | Refs | README | LICENSE

WMFClearKeyInputTrustAuthority.cpp (3587B)

      1 /* This Source Code Form is subject to the terms of the Mozilla Public
      2 * License, v. 2.0. If a copy of the MPL was not distributed with this
      3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      4 
      5 #include "WMFClearKeyInputTrustAuthority.h"
      6 
      7 #include <mfapi.h>
      8 #include <mferror.h>
      9 
     10 #include "WMFClearKeyActivate.h"
     11 #include "WMFClearKeyCDM.h"
     12 // #include "WMFClearKeyDecryptor.h"
     13 #include "WMFClearKeyUtils.h"
     14 #include "WMFClearKeyOutputPolicy.h"
     15 
     16 namespace mozilla {
     17 
     18 using Microsoft::WRL::ComPtr;
     19 using Microsoft::WRL::MakeAndInitialize;
     20 
     21 HRESULT WMFClearKeyInputTrustAuthority::RuntimeClassInitialize(
     22    UINT32 aStreamId, SessionManagerWrapper* aSessionManager) {
     23  ENTRY_LOG();
     24  mSessionManager = aSessionManager;
     25  return S_OK;
     26 }
     27 
     28 STDMETHODIMP WMFClearKeyInputTrustAuthority::GetDecrypter(REFIID aRiid,
     29                                                          void** aPpv) {
     30  ENTRY_LOG();
     31  ComPtr<IMFTransform> decryptor;
     32  // TODO : As currently we are still not able to make decryption working in the
     33  // media foundation pipeline, we will finish the implementation for
     34  // WMFClearKeyDecryptor later.
     35  // RETURN_IF_FAILED((MakeAndInitialize<WMFClearKeyDecryptor, IMFTransform>(
     36  //     &decryptor, mSessionManager)));
     37  RETURN_IF_FAILED(decryptor.CopyTo(aRiid, aPpv));
     38  return S_OK;
     39 }
     40 
     41 STDMETHODIMP WMFClearKeyInputTrustAuthority::RequestAccess(
     42    MFPOLICYMANAGER_ACTION aAction, IMFActivate** aContentEnablerActivate) {
     43  ENTRY_LOG_ARGS("aAction=%d", aAction);
     44  // The ITA only allows the PLAY, EXTRACT and NO actions
     45  // NOTE: Topology created only on the basis of EXTRACT or NO action will NOT
     46  // decrypt content.
     47  if (PEACTION_EXTRACT == aAction || PEACTION_NO == aAction) {
     48    return S_OK;
     49  }
     50  if (PEACTION_PLAY != aAction) {
     51    ENTRY_LOG_ARGS("Unsupported action");
     52    return MF_E_ITA_UNSUPPORTED_ACTION;
     53  }
     54  ComPtr<IMFActivate> activate;
     55  RETURN_IF_FAILED(MakeAndInitialize<WMFClearKeyActivate>(&activate));
     56  *aContentEnablerActivate = activate.Detach();
     57  return S_OK;
     58 }
     59 
     60 STDMETHODIMP WMFClearKeyInputTrustAuthority::GetPolicy(
     61    MFPOLICYMANAGER_ACTION aAction, IMFOutputPolicy** aPolicy) {
     62  ENTRY_LOG();
     63  // For testing purpose, we don't need to set the output policy/
     64  *aPolicy = nullptr;
     65  return S_OK;
     66 }
     67 
     68 STDMETHODIMP WMFClearKeyInputTrustAuthority::BindAccess(
     69    MFINPUTTRUSTAUTHORITY_ACCESS_PARAMS* aParams) {
     70  ENTRY_LOG();
     71  if (aParams == nullptr || aParams->dwVer != 0) {
     72    return E_INVALIDARG;
     73  }
     74  for (DWORD i = 0; i < aParams->cActions; ++i) {
     75    MFPOLICYMANAGER_ACTION action = aParams->rgOutputActions[i].Action;
     76    if (action != PEACTION_PLAY && action != PEACTION_EXTRACT &&
     77        action != PEACTION_NO) {
     78      ENTRY_LOG_ARGS("Unexpected action!");
     79      return MF_E_UNEXPECTED;
     80    }
     81  }
     82  return S_OK;
     83 }
     84 
     85 STDMETHODIMP WMFClearKeyInputTrustAuthority::UpdateAccess(
     86    MFINPUTTRUSTAUTHORITY_ACCESS_PARAMS* aParams) {
     87  ENTRY_LOG();
     88  return BindAccess(aParams);
     89 }
     90 
     91 STDMETHODIMP WMFClearKeyInputTrustAuthority::Reset() {
     92  NOT_IMPLEMENTED();
     93  return E_NOTIMPL;
     94 }
     95 
     96 STDMETHODIMP WMFClearKeyInputTrustAuthority::GetShutdownStatus(
     97    MFSHUTDOWN_STATUS* aStatus) {
     98  ENTRY_LOG();
     99  // https://learn.microsoft.com/en-us/windows/win32/api/mfidl/nf-mfidl-imfshutdown-getshutdownstatus#return-value
    100  if (mSessionManager->IsShutdown()) {
    101    return MF_E_INVALIDREQUEST;
    102  }
    103  return S_OK;
    104 }
    105 
    106 STDMETHODIMP WMFClearKeyInputTrustAuthority::Shutdown() {
    107  ENTRY_LOG();
    108  if (mSessionManager->IsShutdown()) {
    109    return MF_E_SHUTDOWN;
    110  }
    111  mSessionManager->Shutdown();
    112  return S_OK;
    113 }
    114 
    115 }  // namespace mozilla