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d44a8016ad8e2e97cb8cfd0d19fa119acf22c972
android/libwvdrmengine/cdm/core/src/client_identification.cpp
Rahul Frias afd11c0da5 Add support for Resource Rating Tiers 
[ Merge of http://go/wvgerrit/67324 ]

This introduces the ability to query resource rating tier information
through the plugin and CDM. Resource rating tiers are also
sent in the client identification portion of the license request.

Bug: 117112392
Test: WV unit/integration tests
Change-Id: I68ac6dfc4362f61150af822bd526e346b5cc4bf7
2018-12-11 01:43:58 -08:00

291 lines
10 KiB
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// 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 "client_identification.h"
#include <sstream>
#include "crypto_session.h"
#include "license_protocol.pb.h"
#include "log.h"
#include "properties.h"
#include "string_conversions.h"
#include "wv_cdm_constants.h"
namespace {
const std::string kKeyCompanyName = "company_name";
const std::string kKeyModelName = "model_name";
const std::string kKeyArchitectureName = "architecture_name";
const std::string kKeyDeviceName = "device_name";
const std::string kKeyProductName = "product_name";
const std::string kKeyBuildInfo = "build_info";
const std::string kKeyDeviceId = "device_id";
const std::string kKeyWvCdmVersion = "widevine_cdm_version";
const std::string kKeyOemCryptoSecurityPatchLevel =
"oem_crypto_security_patch_level";
} // unnamed namespace
namespace wvcdm {
// Protobuf generated classes.
using video_widevine::ClientIdentification_ClientCapabilities;
using video_widevine::ClientIdentification_NameValue;
using video_widevine::EncryptedClientIdentification;
using video_widevine::ProvisioningOptions;
using video_widevine::ProvisioningRequest;
using video_widevine::ProvisioningResponse;
using video_widevine::SignedProvisioningMessage;
CdmResponseType ClientIdentification::Init(CryptoSession* crypto_session) {
if (crypto_session == NULL) {
LOGE("ClientIdentification::Init: crypto_session not provided");
return PARAMETER_NULL;
}
is_license_request_ = false;
crypto_session_ = crypto_session;
return NO_ERROR;
}
CdmResponseType ClientIdentification::Init(const std::string& client_token,
const std::string& device_id,
CryptoSession* crypto_session) {
if (crypto_session == NULL) {
LOGE("ClientIdentification::Init: crypto_session not provided");
return PARAMETER_NULL;
}
if (client_token.empty()) {
LOGE("ClientIdentification::Init: crypto_session not provided");
return PARAMETER_NULL;
}
is_license_request_ = true;
device_id_ = device_id;
client_token_ = client_token;
crypto_session_ = crypto_session;
return NO_ERROR;
}
/*
* Return the ClientIdentification message token type for provisioning request.
* NOTE: a DRM Cert should never be presented to the provisioning server.
*/
CdmResponseType ClientIdentification::Prepare(
const CdmAppParameterMap& app_parameters,
video_widevine::ClientIdentification* client_id) {
if (is_license_request_) {
client_id->set_type(
video_widevine::ClientIdentification::DRM_DEVICE_CERTIFICATE);
client_id->set_token(client_token_);
} else {
video_widevine::ClientIdentification::TokenType token_type;
if (!GetProvisioningTokenType(&token_type)) {
LOGE("ClientIdentification::Prepare: failure getting provisioning token "
"type");
return CLIENT_IDENTIFICATION_TOKEN_ERROR_1;
}
client_id->set_type(token_type);
std::string token;
if (!crypto_session_->GetProvisioningToken(&token)) {
LOGE("ClientIdentification::Prepare: failure getting provisioning token");
return CLIENT_IDENTIFICATION_TOKEN_ERROR_2;
}
client_id->set_token(token);
}
ClientIdentification_NameValue* client_info;
if (is_license_request_) {
CdmAppParameterMap::const_iterator iter;
for (iter = app_parameters.begin(); iter != app_parameters.end(); iter++) {
client_info = client_id->add_client_info();
client_info->set_name(iter->first);
client_info->set_value(iter->second);
}
}
std::string value;
if (Properties::GetCompanyName(&value)) {
client_info = client_id->add_client_info();
client_info->set_name(kKeyCompanyName);
client_info->set_value(value);
}
if (Properties::GetModelName(&value)) {
client_info = client_id->add_client_info();
client_info->set_name(kKeyModelName);
client_info->set_value(value);
}
if (Properties::GetArchitectureName(&value)) {
client_info = client_id->add_client_info();
client_info->set_name(kKeyArchitectureName);
client_info->set_value(value);
}
if (Properties::GetDeviceName(&value)) {
client_info = client_id->add_client_info();
client_info->set_name(kKeyDeviceName);
client_info->set_value(value);
}
if (Properties::GetProductName(&value)) {
client_info = client_id->add_client_info();
client_info->set_name(kKeyProductName);
client_info->set_value(value);
}
if (Properties::GetBuildInfo(&value)) {
client_info = client_id->add_client_info();
client_info->set_name(kKeyBuildInfo);
client_info->set_value(value);
}
if (Properties::GetWVCdmVersion(&value)) {
client_info = client_id->add_client_info();
client_info->set_name(kKeyWvCdmVersion);
client_info->set_value(value);
}
client_info = client_id->add_client_info();
client_info->set_name(kKeyOemCryptoSecurityPatchLevel);
std::stringstream ss;
ss << (uint32_t)crypto_session_->GetSecurityPatchLevel();
client_info->set_value(ss.str());
ClientIdentification_ClientCapabilities* client_capabilities =
client_id->mutable_client_capabilities();
if (is_license_request_) {
bool supports_usage_information;
if (crypto_session_->UsageInformationSupport(&supports_usage_information)) {
client_capabilities->set_session_token(supports_usage_information);
}
client_capabilities->set_anti_rollback_usage_table(
crypto_session_->IsAntiRollbackHwPresent());
}
uint32_t api_version = 0;
if (crypto_session_->GetApiVersion(&api_version)) {
client_capabilities->set_oem_crypto_api_version(api_version);
}
if (is_license_request_) {
CryptoSession::HdcpCapability current_version, max_version;
if (crypto_session_->GetHdcpCapabilities(&current_version, &max_version)) {
switch (max_version) {
case HDCP_NONE:
client_capabilities->set_max_hdcp_version(
video_widevine::
ClientIdentification_ClientCapabilities_HdcpVersion_HDCP_NONE);
break;
case HDCP_V1:
client_capabilities->set_max_hdcp_version(
video_widevine::
ClientIdentification_ClientCapabilities_HdcpVersion_HDCP_V1);
break;
case HDCP_V2:
client_capabilities->set_max_hdcp_version(
video_widevine::
ClientIdentification_ClientCapabilities_HdcpVersion_HDCP_V2);
break;
case HDCP_V2_1:
client_capabilities->set_max_hdcp_version(
video_widevine::
ClientIdentification_ClientCapabilities_HdcpVersion_HDCP_V2_1);
break;
case HDCP_V2_2:
client_capabilities->set_max_hdcp_version(
video_widevine::
ClientIdentification_ClientCapabilities_HdcpVersion_HDCP_V2_2);
break;
case HDCP_V2_3:
client_capabilities->set_max_hdcp_version(
video_widevine::
ClientIdentification_ClientCapabilities_HdcpVersion_HDCP_V2_3);
break;
case HDCP_NO_DIGITAL_OUTPUT:
client_capabilities->set_max_hdcp_version(
video_widevine::
ClientIdentification_ClientCapabilities_HdcpVersion_HDCP_NO_DIGITAL_OUTPUT);
break;
default:
LOGW(
"ClientIdentification::PrepareClientId: unexpected HDCP max "
"capability version %d", max_version);
}
}
}
CryptoSession::SupportedCertificateTypes supported_certs;
if (crypto_session_->GetSupportedCertificateTypes(&supported_certs)) {
if (supported_certs.rsa_2048_bit) {
client_capabilities->add_supported_certificate_key_type(
video_widevine::
ClientIdentification_ClientCapabilities_CertificateKeyType_RSA_2048);
}
if (supported_certs.rsa_3072_bit) {
client_capabilities->add_supported_certificate_key_type(
video_widevine::
ClientIdentification_ClientCapabilities_CertificateKeyType_RSA_3072);
}
}
if (is_license_request_) {
client_capabilities->set_can_update_srm(
crypto_session_->IsSrmUpdateSupported());
uint16_t srm_version;
if (crypto_session_->GetSrmVersion(&srm_version))
client_capabilities->set_srm_version(srm_version);
}
bool can_support_output;
bool can_disable_output;
bool can_support_cgms_a;
if (crypto_session_->GetAnalogOutputCapabilities(&can_support_output,
&can_disable_output,
&can_support_cgms_a)) {
video_widevine::ClientIdentification_ClientCapabilities_AnalogOutputCapabilities
capabilities = video_widevine::ClientIdentification_ClientCapabilities_AnalogOutputCapabilities_ANALOG_OUTPUT_NONE;
if (can_support_output) {
if (can_support_cgms_a) {
capabilities = video_widevine::ClientIdentification_ClientCapabilities_AnalogOutputCapabilities_ANALOG_OUTPUT_SUPPORTS_CGMS_A;
} else {
capabilities = video_widevine::ClientIdentification_ClientCapabilities_AnalogOutputCapabilities_ANALOG_OUTPUT_SUPPORTED;
}
}
client_capabilities->set_analog_output_capabilities(capabilities);
client_capabilities->set_can_disable_analog_output(can_disable_output);
} else {
client_capabilities->set_analog_output_capabilities(video_widevine::ClientIdentification_ClientCapabilities_AnalogOutputCapabilities_ANALOG_OUTPUT_UNKNOWN);
}
uint32_t version, tier;
if (crypto_session_->GetApiVersion(&version)) {
if (version >= OEM_CRYPTO_API_VERSION_SUPPORTS_RESOURCE_RATING_TIER) {
if (crypto_session_->GetResourceRatingTier(&tier)) {
client_capabilities->set_resource_rating_tier(tier);
}
}
}
return NO_ERROR;
}
bool ClientIdentification::GetProvisioningTokenType(
video_widevine::ClientIdentification::TokenType* token_type) {
CdmClientTokenType token = crypto_session_->GetPreProvisionTokenType();
switch (token) {
case kClientTokenKeybox:
*token_type = video_widevine::ClientIdentification::KEYBOX;
return true;
case kClientTokenOemCert:
*token_type =
video_widevine::ClientIdentification::OEM_DEVICE_CERTIFICATE;
return true;
case kClientTokenDrmCert:
default:
// shouldn't happen
LOGE("CertificateProvisioning::GetProvisioningTokenType: unexpected "
"provisioning type: %d", token);
return false;
}
}
} // namespace wvcdm
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