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Merge "Generate a unique license request ID" into klp-dev

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This commit is contained in:
Jeff Tinker
2013-12-12 18:17:34 +00:00
committed by Android (Google) Code Review
parent 3567597ada 1b22c80568
commit 68e1e7c578
2 changed files with 22 additions and 8 deletions
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3
libwvdrmengine/cdm/core/include/crypto_session.h
View File

@@ -94,6 +94,9 @@ class CryptoSession {
KeyId key_id_;
uint64_t request_id_base_;
static uint64_t request_id_index_;
CORE_DISALLOW_COPY_AND_ASSIGN(CryptoSession);
};

27
libwvdrmengine/cdm/core/src/crypto_session.cpp
View File

@@ -31,11 +31,13 @@ namespace wvcdm {
Lock CryptoSession::crypto_lock_;
bool CryptoSession::initialized_ = false;
int CryptoSession::session_count_ = 0;
uint64_t CryptoSession::request_id_index_ = 0;
CryptoSession::CryptoSession()
: open_(false),
is_destination_buffer_type_valid_(false),
requested_security_level_(kLevelDefault) {
requested_security_level_(kLevelDefault),
request_id_base_(0) {
Init();
}
@@ -227,7 +229,12 @@ CdmResponseType CryptoSession::Open(SecurityLevel requested_security_level) {
} else if (OEMCrypto_ERROR_TOO_MANY_SESSIONS == sts) {
return INSUFFICIENT_CRYPTO_RESOURCES;
}
return open_ ? NO_ERROR : UNKNOWN_ERROR;
if (!open_) return UNKNOWN_ERROR;
OEMCrypto_GetRandom(reinterpret_cast<uint8_t*>(&request_id_base_),
sizeof(request_id_base_));
++request_id_index_;
return NO_ERROR;
}
void CryptoSession::Close() {
@@ -243,8 +250,10 @@ void CryptoSession::Close() {
void CryptoSession::GenerateRequestId(std::string& req_id_str) {
LOGV("CryptoSession::GenerateRequestId: Lock");
AutoLock auto_lock(crypto_lock_);
// TODO(gmorgan): Get unique ID from OEMCrypto
req_id_str.assign("987654321");
req_id_str = HexEncode(reinterpret_cast<uint8_t*>(&request_id_base_),
sizeof(request_id_base_)) +
HexEncode(reinterpret_cast<uint8_t*>(&request_id_index_),
sizeof(request_id_index_));
}
bool CryptoSession::PrepareRequest(const std::string& message,
@@ -275,8 +284,9 @@ bool CryptoSession::PrepareRenewalRequest(const std::string& message,
AutoLock auto_lock(crypto_lock_);
if (!signature) {
LOGE("CryptoSession::PrepareRenewalRequest : No output destination "
"provided.");
LOGE(
"CryptoSession::PrepareRenewalRequest : No output destination "
"provided.");
return false;
}
@@ -306,8 +316,9 @@ void CryptoSession::GenerateMacContext(const std::string& input_context,
void CryptoSession::GenerateEncryptContext(const std::string& input_context,
std::string* deriv_context) {
if (!deriv_context) {
LOGE("CryptoSession::GenerateEncryptContext : No output destination "
"provided.");
LOGE(
"CryptoSession::GenerateEncryptContext : No output destination "
"provided.");
return;
}