widevine-partner/android
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Corrections for big usage table support in L3

Browse Source 
[ Merge of http://go/wvgerrit/26421 ]

* Corrects usage_table_header lifetime management. Earlier the
  UsageTableHeader class was a singleton tied to the CdmEngine lifetime.
  With SPOIDs there might be multiple concurrent CdmEngine objects.
  The UsageTableHeader class is now associated with OEMCrypto
  lifetime. There are two UsageTableHeader objects one for each L1 and L3.
  These get allocated/deallocated on OEMCrypto Initialization/Termination
  respectively.
* UsageTableHeader requires OEMCrypto, file read/writes and
  metric gathering to perform its required functionality. Because of the
  lifetime changes, CryptoSession, DeviceFiles and MetricsGroup objects
  need to passed to the methods rather than at Creation time.
* Miscellaneous fixes, when moving or deleteing entries.
* Adds usage_table_header_unittests.
* Addresses failures with request_license_test with secure stop in L3.

b/36858906
b/36855557
b/36048120
b/38341136
b/37100505
b/35946047

Test: Verified by unit and integration tests. Added new
      usage_table_header_unittests

Change-Id: I20e396ab2c0afbd14372dd93b969e5b0f1ccd291
This commit is contained in:
Rahul Frias
2017-05-22 13:33:20 -07:00
parent 45c98e47f2
commit 5da8da58f6
18 changed files with 1937 additions and 214 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
libwvdrmengine/cdm/core/include/cdm_session.h
View File

@@ -82,8 +82,7 @@ class CdmSession {
// ReleaseKey() - Accept response and release key.
virtual CdmResponseType ReleaseKey(const CdmKeyResponse& key_response);
virtual CdmResponseType DeleteUsageEntry(
const DeviceFiles::CdmUsageData& usage_data);
virtual CdmResponseType DeleteUsageEntry(uint32_t usage_entry_number);
virtual bool IsKeyLoaded(const KeyId& key_id);
virtual int64_t GetDurationRemaining();

8
libwvdrmengine/cdm/core/include/crypto_session.h
View File

@@ -17,6 +17,8 @@
namespace wvcdm {
class CryptoKey;
class UsageTableHeader;
typedef std::map<CryptoKeyId, CryptoKey*> CryptoKeyMap;
class CryptoSession {
@@ -142,6 +144,9 @@ class CryptoSession {
const std::string& signature);
// Usage table header and usage entry related methods
virtual UsageTableHeader* GetUsageTableHeader() {
return usage_table_header_;
}
virtual CdmResponseType GetUsageSupportType(CdmUsageSupportType* type);
virtual CdmResponseType CreateUsageTableHeader(
CdmUsageTableHeader* usage_table_header);
@@ -217,6 +222,9 @@ class CryptoSession {
bool is_usage_support_type_valid_;
CdmUsageSupportType usage_support_type_;
UsageTableHeader* usage_table_header_;
static UsageTableHeader* usage_table_header_l1_;
static UsageTableHeader* usage_table_header_l3_;
uint64_t request_id_base_;
static uint64_t request_id_index_;

4
libwvdrmengine/cdm/core/include/license.h
View File

@@ -21,6 +21,7 @@ namespace wvcdm {
class Clock;
class CryptoSession;
class PolicyEngine;
class CdmSession;
class CdmLicense {
public:
@@ -37,7 +38,8 @@ class CdmLicense {
std::string* server_url);
virtual CdmResponseType PrepareKeyUpdateRequest(
bool is_renewal, const CdmAppParameterMap& app_parameters,
CdmKeyMessage* signed_request, std::string* server_url);
CdmSession* cdm_session, CdmKeyMessage* signed_request,
std::string* server_url);
virtual CdmResponseType HandleKeyResponse(
const CdmKeyResponse& license_response);
virtual CdmResponseType HandleKeyUpdateResponse(

97
libwvdrmengine/cdm/core/include/usage_table_header.h
View File

@@ -7,36 +7,48 @@
#include <vector>
#include "device_files.h"
#include "file_store.h"
#include "lock.h"
#include "metrics_group.h"
#include "scoped_ptr.h"
#include "timer_metric.h"
#include "wv_cdm_types.h"
namespace wvcdm {
class FileSystem;
class CryptoSession;
// The UsageTableHeader class is a singleton that CDM sessions will share.
// A separate object will be created for each security level.
// The class synchronizes access to usage table header and associated
// data-structures and controls when they are read in or written out to
// non-secure persistent storage.
// Offline licenses/secure stops may be securely tracked using usage
// tables (OEMCrypto v9-12) or usage table headers+usage entries
// (OEMCrypto v13+). This class assists with the latter, synchronizing
// access to usage table header and associated data-structures and controlling
// when they are read in or written out to non-secure persistent storage.
//
// Each OEMCrypto (for each security level) will maintain its own usage table
// header. Each license will have an associated usage entry that is also
// stored in persistent memory and is noted in the usage table header.
// Usage entry information will be verified when licenses are loaded.
//
// OEMCrypto for each security level have their own usage table
// headers. They are loaded on initialization and written out periodically.
// The lifecycle of this class is tied to when OEMCrypto is
// initialized/terminated.
//
// Sessions and licenses are however handled by CdmSession and so most
// calls to maniplate the usage table header related to usage entries
// are by CdmSession.
//
// Upgrades from a fixed size usage table (supported by previous
// versions of the OEMCrypto API v9-12) are handled by this class.
// |usage_entry| and |usage_entry_number|s need to be saved in the license
// and usage info records by the caller.
class UsageTableHeader {
public:
// This methods instantiates or retrieves a usage table header singleton of
// appropriate security level as specified by the |crypto_session|
// object.
UsageTableHeader();
virtual ~UsageTableHeader() {}
// |crypto_session| is used to create or load a usage master table and
// not cached beyound this call.
static UsageTableHeader* GetInstance(FileSystem* file_system,
CryptoSession* crypto_session_);
virtual ~UsageTableHeader() {}
bool Init(CdmSecurityLevel security_level, CryptoSession* crypto_session);
// |persistent_license| false indicates usage info record
CdmResponseType AddEntry(CryptoSession* crypto_session,
@@ -53,54 +65,67 @@ class UsageTableHeader {
// The licenses or usage info records specified by |usage_entry_number|
// should not be in use by any open CryptoSession objects when calls
// to DeleteEntry and MoveEntry are made.
CdmResponseType DeleteEntry(uint32_t usage_entry_number);
CdmResponseType MoveEntry(uint32_t from_usage_entry_number,
const CdmUsageEntry& from_usage_entry,
uint32_t to_usage_entry_number);
CdmResponseType DeleteEntry(uint32_t usage_entry_number, DeviceFiles* handle,
metrics::MetricsGroup* metrics);
private:
UsageTableHeader(FileSystem* file_system, CryptoSession* crypto_session,
CdmSecurityLevel security_level);
CdmResponseType MoveEntry(uint32_t from /* usage entry number */,
const CdmUsageEntry& from_usage_entry,
uint32_t to /* usage entry number */,
DeviceFiles* handle,
metrics::MetricsGroup* metrics);
CdmResponseType GetEntry(uint32_t usage_entry_number,
CdmResponseType GetEntry(uint32_t usage_entry_number, DeviceFiles* handle,
CdmUsageEntry* usage_entry);
CdmResponseType StoreEntry(uint32_t usage_entry_number,
CdmResponseType StoreEntry(uint32_t usage_entry_number, DeviceFiles* handle,
const CdmUsageEntry& usage_entry);
bool DeleteLastEntry();
CdmResponseType Shrink(metrics::MetricsGroup* metrics,
uint32_t number_of_usage_entries_to_delete);
CdmResponseType UpgradeFromUsageTable();
bool UpgradeLicensesFromUsageTable();
bool UpgradeUsageInfoFromUsageTable();
CdmResponseType UpgradeFromUsageTable(DeviceFiles* handle,
metrics::MetricsGroup* metrics);
bool UpgradeLicensesFromUsageTable(DeviceFiles* handle,
metrics::MetricsGroup* metrics);
bool UpgradeUsageInfoFromUsageTable(DeviceFiles* handle,
metrics::MetricsGroup* metrics);
virtual bool is_inited() { return is_inited_; }
SecurityLevel GetSecurityLevel() {
return security_level_ == kSecurityLevelL3 ? kLevel3 : kLevelDefault;
}
static UsageTableHeader* usage_table_header_l1_;
static UsageTableHeader* usage_table_header_l3_;
// This handle and file system is only to be used when accessing
// usage_table_header. Usage entries should use the file system provided
// by CdmSession.
scoped_ptr<DeviceFiles> file_handle_;
scoped_ptr<FileSystem> file_system_;
CdmSecurityLevel security_level_;
SecurityLevel requested_security_level_;
CdmUsageTableHeader usage_table_header_;
std::vector<CdmUsageEntryInfo> usage_entry_info_;
metrics::MetricsGroup metrics_;
metrics::TimerMetric life_span_;
// Lock to ensure that a single object is created for each security level
// and data member to represent whether an object has been correctly
// initialized.
bool is_inited_;
static Lock initialization_lock_;
// Synchonizes access to the Usage Table Header and bookkeeping
// data-structures
Lock usage_table_header_lock_;
// Test related declarations
friend class UsageTableHeaderTest;
// These setters are for testing only. Takes ownership of the pointers.
void SetDeviceFiles(DeviceFiles* device_files) {
file_handle_.reset(device_files);
}
void SetCryptoSession(CryptoSession* crypto_session) {
test_crypto_session_.reset(crypto_session);
}
// Test related data members
scoped_ptr<CryptoSession> test_crypto_session_;
CORE_DISALLOW_COPY_AND_ASSIGN(UsageTableHeader);
};

7
libwvdrmengine/cdm/core/include/wv_cdm_types.h
View File

@@ -297,6 +297,7 @@ enum CdmResponseType {
INCORRECT_USAGE_SUPPORT_TYPE_2,
KEY_PROHIBITED_FOR_SECURITY_LEVEL, /* 255 */
KEY_NOT_FOUND_IN_SESSION,
NO_USAGE_ENTRIES,
};
enum CdmKeyStatus {
@@ -392,6 +393,12 @@ struct CdmUsageEntryInfo {
CdmUsageEntryStorageType storage_type;
CdmKeySetId key_set_id;
std::string usage_info_file_name;
bool operator==(const CdmUsageEntryInfo& other) const {
return storage_type == other.storage_type &&
key_set_id == other.key_set_id &&
(storage_type != kStorageUsageInfo ||
usage_info_file_name == other.usage_info_file_name);
}
};
class CdmKeyAllowedUsage {