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OEMCrypto Backwards Compatible Usage Table

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Merge from widevine of http://go/wvgerrit/23283

This CL adds the backwards compatiblity functions to the new usage
tables in the oemcrypto mock reference code.

b/31458046
b/32554171

Change-Id: I04901d95aceb8910406f7c514c26c29c2c575322
This commit is contained in:
Fred Gylys-Colwell
2017-01-27 15:22:55 -08:00
parent d06fa606c7
commit 9e153438db
14 changed files with 1151 additions and 350 deletions
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22
libwvdrmengine/oemcrypto/mock/src/oemcrypto_usage_table_mock.h
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@@ -21,6 +21,8 @@ namespace wvoec_mock {
class SessionContext;
class CryptoEngine;
class UsageTable;
class OldUsageTable;
class OldUsageTableEntry;
const size_t kMaxPSTLength = 255;
// This is the data we store offline.
@@ -61,6 +63,7 @@ class UsageTableEntry {
uint8_t* signed_buffer, size_t buffer_size);
OEMCryptoResult LoadData(CryptoEngine* ce, uint32_t index,
const std::vector<uint8_t>& buffer);
OEMCryptoResult CopyOldUsageEntry(const std::vector<uint8_t>& pst);
int64_t generation_number() { return data_.generation_number; }
void set_generation_number(int64_t value) { data_.generation_number = value; }
void set_index(int32_t index) { data_.index = index; }
@@ -77,7 +80,9 @@ class UsageTableEntry {
class UsageTable {
public:
UsageTable(CryptoEngine* ce, wvcdm::FileSystem* file_system)
: ce_(ce), file_system_(file_system), header_loaded_(false){};
: ce_(ce), file_system_(file_system), header_loaded_(false),
old_table_(NULL){};
~UsageTable();
OEMCryptoResult CreateNewUsageEntry(SessionContext* session,
UsageTableEntry** entry,
@@ -92,19 +97,25 @@ class UsageTable {
uint8_t* entry_buffer,
size_t* entry_buffer_length);
OEMCryptoResult MoveEntry(UsageTableEntry* entry, uint32_t new_index);
OEMCryptoResult CopyOldUsageEntry(UsageTableEntry* entry,
const std::vector<uint8_t>& pst);
OEMCryptoResult DeleteOldUsageTable();
OEMCryptoResult CreateUsageTableHeader(uint8_t* header_buffer,
size_t* header_buffer_length);
OEMCryptoResult LoadUsageTableHeader(const std::vector<uint8_t>& buffer);
OEMCryptoResult ShrinkUsageTableHeader(uint32_t new_table_size,
uint8_t* header_buffer,
size_t* header_buffer_length);
// Diassociates this entry with it's session.
void ReleaseEntry(uint32_t index) { sessions_[index] = 0; }
void IncrementGeneration();
static size_t SignedHeaderSize(size_t count);
OldUsageTableEntry* FindOldUsageEntry(const std::vector<uint8_t>& pst);
OEMCryptoResult DeleteOldUsageTable();
OEMCryptoResult CreateOldUsageEntry(uint64_t time_since_license_received,
uint64_t time_since_first_decrypt,
uint64_t time_since_last_decrypt,
OEMCrypto_Usage_Entry_Status status,
uint8_t *server_mac_key,
uint8_t *client_mac_key,
const uint8_t* pst,
size_t pst_length);
private:
OEMCryptoResult SaveUsageTableHeader(uint8_t* signed_buffer,
@@ -118,6 +129,7 @@ class UsageTable {
int64_t master_generation_number_;
std::vector<int64_t> generation_numbers_;
std::vector<SessionContext*> sessions_;
OldUsageTable *old_table_;
};
} // namespace wvoec_mock