android/libwvdrmengine/cdm/core/src/properties.cpp

// Copyright 2013 Google Inc. All Rights Reserved.

#include "log.h"
#include "properties_configuration.h"
#include "wv_cdm_constants.h"

namespace {
const char *kSecurityLevelDirs[] = { "L1/", "L3/" };
}  // namespace

namespace wvcdm {
bool Properties::begin_license_usage_when_received_;
bool Properties::require_explicit_renew_request_;
bool Properties::oem_crypto_use_secure_buffers_;
bool Properties::oem_crypto_use_fifo_;
bool Properties::oem_crypto_use_userspace_buffers_;
bool Properties::use_certificates_as_identification_;
bool Properties::extract_pssh_data_;
bool Properties::decrypt_with_empty_session_support_;
bool Properties::security_level_path_backward_compatibility_support_;
scoped_ptr<CdmClientPropertySetMap> Properties::session_property_set_;

void Properties::Init() {
  begin_license_usage_when_received_ = kPropertyBeginLicenseUsageWhenReceived;
  require_explicit_renew_request_ = kPropertyRequireExplicitRenewRequest;
  oem_crypto_use_secure_buffers_ = kPropertyOemCryptoUseSecureBuffers;
  oem_crypto_use_fifo_ = kPropertyOemCryptoUseFifo;
  oem_crypto_use_userspace_buffers_ = kPropertyOemCryptoUseUserSpaceBuffers;
  use_certificates_as_identification_ =
      kPropertyUseCertificatesAsIdentification;
  extract_pssh_data_ = kExtractPsshData;
  decrypt_with_empty_session_support_ = kDecryptWithEmptySessionSupport;
  security_level_path_backward_compatibility_support_ = kSecurityLevelPathBackwardCompatibilitySupport;
  session_property_set_.reset(new CdmClientPropertySetMap());
}

bool Properties::AddSessionPropertySet(
    const CdmSessionId& session_id,
    const CdmClientPropertySet* property_set) {
  if (NULL == session_property_set_.get()) {
    return false;
  }
  std::pair<CdmClientPropertySetMap::iterator, bool> result =
    session_property_set_->insert(
        std::pair<const CdmSessionId,
                  const CdmClientPropertySet*>(session_id, property_set));
  return result.second;
}

bool Properties::RemoveSessionPropertySet(const CdmSessionId& session_id) {
  if (NULL == session_property_set_.get()) {
    return false;
  }
  return (1 == session_property_set_->erase(session_id));
}

const CdmClientPropertySet* Properties::GetCdmClientPropertySet(
  const CdmSessionId& session_id) {
  if (NULL != session_property_set_.get()) {
    CdmClientPropertySetMap::const_iterator it =
        session_property_set_->find(session_id);
    if (it != session_property_set_->end()) {
      return it->second;
    }
  }
  return NULL;
}

const std::string Properties::GetSecurityLevel(const CdmSessionId& session_id) {
  const CdmClientPropertySet* property_set =
      GetCdmClientPropertySet(session_id);
  if (NULL == property_set) {
    LOGE("Properties::GetSecurityLevel: cannot find property set for %s",
         session_id.c_str());
    return "";
  }
  return property_set->security_level();
}

const std::vector<uint8_t> Properties::GetServiceCertificate(
    const CdmSessionId& session_id) {
  const CdmClientPropertySet* property_set =
      GetCdmClientPropertySet(session_id);
  if (NULL == property_set) {
    LOGE("Properties::GetServiceCertificate: cannot find property set for %s",
         session_id.c_str());
    return std::vector<uint8_t>();
  }
  return property_set->service_certificate();
}

bool Properties::UsePrivacyMode(const CdmSessionId& session_id) {
  const CdmClientPropertySet* property_set =
      GetCdmClientPropertySet(session_id);
  if (NULL == property_set) {
    LOGE("Properties::UsePrivacyMode: cannot find property set for %s",
         session_id.c_str());
    return false;
  }
  return property_set->use_privacy_mode();
}

uint32_t Properties::GetSessionSharingId(const CdmSessionId& session_id) {
  const CdmClientPropertySet* property_set =
      GetCdmClientPropertySet(session_id);
  if (NULL == property_set) {
    LOGE("Properties::GetSessionSharingId: cannot find property set for %s",
         session_id.c_str());
    return 0;
  }
  return property_set->session_sharing_id();
}

bool Properties::GetSecurityLevelDirectories(std::vector<std::string>* dirs) {
  dirs->resize(sizeof(kSecurityLevelDirs)/sizeof(const char*));
  for (size_t i = 0; i < dirs->size(); ++i) {
    (*dirs)[i] = kSecurityLevelDirs[i];
  }
  return true;
}

}  // namespace wvcdm