Files
android/libwvdrmengine/cdm/core/src/properties.cpp
John W. Bruce 86efc7534a Make Properties::Init() Take Action Only Once
(This is a merge of http://go/wvgerrit/70383)

Up until now, implementations of Properties::Init() have had to handle
potentially being called multiple times, at any point during runtime. In
practice, this has meant little for the actual implementations, and all
of them have committed the error of blowing away mutated property state
if the method is re-run at the wrong time.

This patch makes the platform implementations a private function,
Properties::InitOnce(), which Properties::Init() ensures will never be
called more than once per run.

Bug: 112046733
Test: CE CDM Unit Tests
Test: Android Unit Tests
Change-Id: If33f5e37abfad5d26da8380b4bc25fc018450970
2019-01-15 16:27:57 -08:00

114 lines
3.4 KiB
C++

// Copyright 2018 Google LLC. All Rights Reserved. This file and proprietary
// source code may only be used and distributed under the Widevine Master
// License Agreement.
#include "log.h"
#include "properties.h"
#include "wv_cdm_constants.h"
namespace {
const char* kSecurityLevelDirs[] = {"L1/", "L3/"};
} // namespace
namespace wvcdm {
std::mutex Properties::init_mutex_;
bool Properties::is_initialized_ = false;
bool Properties::oem_crypto_use_secure_buffers_;
bool Properties::oem_crypto_use_fifo_;
bool Properties::oem_crypto_use_userspace_buffers_;
bool Properties::provisioning_messages_are_binary_;
bool Properties::allow_service_certificate_requests_;
std::unique_ptr<CdmClientPropertySetMap> Properties::session_property_set_;
bool Properties::AddSessionPropertySet(
const CdmSessionId& session_id, 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, 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));
}
CdmClientPropertySet* Properties::GetCdmClientPropertySet(
const CdmSessionId& session_id) {
if (NULL != session_property_set_.get()) {
CdmClientPropertySetMap::iterator it =
session_property_set_->find(session_id);
if (it != session_property_set_->end()) {
return it->second;
}
}
return NULL;
}
bool Properties::GetApplicationId(const CdmSessionId& session_id,
std::string* app_id) {
const CdmClientPropertySet* property_set =
GetCdmClientPropertySet(session_id);
if (NULL == property_set) {
return false;
}
*app_id = property_set->app_id();
return true;
}
bool Properties::GetServiceCertificate(const CdmSessionId& session_id,
std::string* service_certificate) {
const CdmClientPropertySet* property_set =
GetCdmClientPropertySet(session_id);
if (property_set == NULL) {
return false;
}
*service_certificate = property_set->service_certificate();
return true;
}
bool Properties::SetServiceCertificate(const CdmSessionId& session_id,
const std::string& service_certificate) {
CdmClientPropertySet* property_set =
GetCdmClientPropertySet(session_id);
if (property_set == NULL) {
return false;
}
property_set->set_service_certificate(service_certificate);
return true;
}
bool Properties::UsePrivacyMode(const CdmSessionId& session_id) {
const CdmClientPropertySet* property_set =
GetCdmClientPropertySet(session_id);
if (NULL == property_set) {
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) {
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