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Move functionality to policy_timer.

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[ Merge of http://go/wvgerrit/164277 ]

No functional changes are made in this CL. policy_timer_v16 and
policy_timer_v15 derive from policy_timer. We have removed
support for OEMCrypto v15. policy_timer_v15 has also been removed.

This allows us to move functionality from policy_timer_v16
to policy_timer class. This will ease subsequent renew on
license load functionality.

Bug: 256038127
Test: Luci tests
Change-Id: Iebd588237edd02b30a820c4d9d57ce041c26964e
This commit is contained in:
Rahul Frias
2022-12-21 05:44:07 -08:00
parent 539843da00
commit 78a4902214
4 changed files with 125 additions and 154 deletions
Download Patch File Download Diff File Expand all files Collapse all files

56
libwvdrmengine/cdm/core/include/policy_timers.h
View File

@@ -10,6 +10,7 @@
#include "disallow_copy_and_assign.h"
#include "license_protocol.pb.h"
#include "wv_cdm_constants.h"
#include "wv_cdm_types.h"
namespace wvcdm {
@@ -43,20 +44,45 @@ class PolicyTimers {
// For offline save and restore
virtual int64_t GetPlaybackStartTime() { return playback_start_time_; }
virtual int64_t GetLastPlaybackTime() { return last_playback_time_; }
virtual int64_t GetGracePeriodEndTime() = 0;
// This is a legacy field for offline licenses. Since no grace period is
// supported return a default value.
virtual int64_t GetGracePeriodEndTime() { return 0; }
virtual void RestorePlaybackTimes(int64_t current_time,
int64_t playback_start_time,
int64_t last_playback_time,
int64_t grace_period_end_time) = 0;
int64_t grace_period_end_time);
virtual bool HasPlaybackStarted(int64_t current_time) = 0;
virtual bool HasPlaybackStarted(int64_t /* current_time */) {
return playback_start_time_ != 0;
}
// For licenses that support core messages, evaluation of only rental and
// playback durations are needed.
virtual bool HasLicenseOrRentalOrPlaybackDurationExpired(
int64_t current_time) = 0;
virtual bool HasPassedGracePeriod(int64_t current_time) = 0;
int64_t current_time) {
return HasRentalOrPlaybackDurationExpired(current_time);
}
virtual bool HasPassedGracePeriod(int64_t /* current_time */) { return true; }
// This returns
// * before playback begins: the time remaining on |rental_duration_seconds|
// * after playback begins:
// - |soft_enforce_playback_duration| is true: the time remaining on
// |playback_duration_seconds|
// - |soft_enforce_playback_duration| is false: the minimum
// of the time remaining on |rental_duration_seconds| or
// |playback_duration_seconds|
//
// |license_duration_seconds| is ignored with the introduction of core
// messages
virtual int64_t GetLicenseOrRentalOrPlaybackDurationRemaining(
int64_t current_time) = 0;
virtual int64_t GetLicenseOrRentalDurationRemaining(int64_t current_time) = 0;
int64_t current_time);
// This is only used in Query. This should return the time remaining on
// |rental_duration_seconds|.
virtual int64_t GetLicenseOrRentalDurationRemaining(int64_t current_time) {
return GetRentalDurationRemaining(current_time);
};
// This is only used in Query. This should return |playback_duration_seconds|
// before playback begins or the time remaining on
// |playback_duration_seconds| after playback begins.
@@ -72,7 +98,7 @@ class PolicyTimers {
virtual bool UpdateExpirationTime(int64_t current_time, int64_t* expiry_time);
// Renewal related methods
virtual bool HasRenewalDelayExpired(int64_t current_time);
virtual bool HasRenewalDelayExpired(int64_t current_time) = 0;
virtual bool HasRenewalRetryIntervalExpired(int64_t current_time);
virtual void UpdateRenewalRequest(int64_t current_time);
virtual bool HasRenewalRecoveryDurationExpired(int64_t current_time);
@@ -90,11 +116,11 @@ class PolicyTimers {
was_expired_on_load_(false) {}
// Gets the clock time that the license expires based on whether we have
// started playing.
// started playing. This takes into account GetHardLicenseExpiryTime.
virtual int64_t GetExpiryTime(int64_t current_time,
bool ignore_soft_enforce_playback_duration) = 0;
bool ignore_soft_enforce_playback_duration);
virtual int64_t GetRenewalStartTime() = 0;
virtual int64_t GetRenewalStartTime() { return renewal_start_time_; }
// This is the current policy information for this license. This gets updated
// as license renewals occur.
@@ -105,12 +131,20 @@ class PolicyTimers {
int64_t last_playback_time_;
int64_t last_expiry_time_;
int64_t last_expiry_time_set_;
int64_t renewal_start_time_ = 0;
int64_t next_renewal_time_;
// Indicates whether a persistent license was expired when loaded
bool was_expired_on_load_;
private:
// Gets the clock time that the rental duration or playback will expire.
virtual int64_t GetRentalExpiryTime(int64_t current_time);
virtual int64_t GetPlaybackExpiryTime(
int64_t current_time, bool ignore_soft_enforce_playback_duration);
bool HasRentalOrPlaybackDurationExpired(int64_t current_time);
virtual int64_t GetRentalDurationRemaining(int64_t current_time);
CORE_DISALLOW_COPY_AND_ASSIGN(PolicyTimers);
};

60
libwvdrmengine/cdm/core/include/policy_timers_v16.h
View File

@@ -43,68 +43,10 @@ class PolicyTimersV16 : public PolicyTimers {
// Call this on first decrypt to set the start of playback.
void BeginDecryption(int64_t current_time) override;
// This is a legacy field for offline licenses. Since no grace period is
// supported return a default value.
int64_t GetGracePeriodEndTime() override { return 0; }
// For offline save and restore.
void RestorePlaybackTimes(int64_t current_time, int64_t playback_start_time,
int64_t last_playback_time,
int64_t grace_period_end_time) override;
bool HasPlaybackStarted(int64_t /* current_time */) override {
return playback_start_time_ != 0;
}
// For licenses that support core messages, evaluation of only rental and
// playback durations are needed.
bool HasLicenseOrRentalOrPlaybackDurationExpired(
int64_t current_time) override {
return HasRentalOrPlaybackDurationExpired(current_time);
}
bool HasPassedGracePeriod(int64_t /* current_time */) override {
return true;
}
// This returns
// * before playback begins: the time remaining on |rental_duration_seconds|
// * after playback begins:
// - |soft_enforce_playback_duration| is true: the time remaining on
// |playback_duration_seconds|
// - |soft_enforce_playback_duration| is false: the minimum
// of the time remaining on |rental_duration_seconds| or
// |playback_duration_seconds|
//
// |license_duration_seconds| is ignored with the introduction of core
// messages
int64_t GetLicenseOrRentalOrPlaybackDurationRemaining(
int64_t current_time) override;
// This is only used in Query. This should return the time remaining on
// |rental_duration_seconds|.
int64_t GetLicenseOrRentalDurationRemaining(int64_t current_time) override {
return GetRentalDurationRemaining(current_time);
};
// Renewal related methods
bool HasRenewalDelayExpired(int64_t current_time) override;
protected:
// Gets the clock time that the license expires based on whether we have
// started playing. This takes into account GetHardLicenseExpiryTime.
int64_t GetExpiryTime(int64_t current_time,
bool ignore_soft_enforce_playback_duration) override;
int64_t GetRenewalStartTime() override { return renewal_start_time_; }
private:
// Gets the clock time that the rental duration or playback will expire.
int64_t GetRentalExpiryTime(int64_t current_time);
int64_t GetPlaybackExpiryTime(int64_t current_time,
bool ignore_soft_enforce_playback_duration);
bool HasRentalOrPlaybackDurationExpired(int64_t current_time);
int64_t GetRentalDurationRemaining(int64_t current_time);
int64_t renewal_start_time_ = 0;
CORE_DISALLOW_COPY_AND_ASSIGN(PolicyTimersV16);
};

85
libwvdrmengine/cdm/core/src/policy_timers.cpp
View File

@@ -24,6 +24,28 @@ void PolicyTimers::DecryptionEvent(int64_t current_time) {
last_playback_time_ = current_time;
}
void PolicyTimers::RestorePlaybackTimes(int64_t current_time,
int64_t playback_start_time,
int64_t last_playback_time,
int64_t /* grace_period_end_time */) {
playback_start_time_ = (playback_start_time > 0) ? playback_start_time : 0;
last_playback_time_ = (last_playback_time > 0) ? last_playback_time : 0;
const int64_t expiry_time = GetExpiryTime(
current_time, /* ignore_soft_enforce_playback_duration */ true);
was_expired_on_load_ =
expiry_time != NEVER_EXPIRES && expiry_time < current_time;
}
int64_t PolicyTimers::GetLicenseOrRentalOrPlaybackDurationRemaining(
int64_t current_time) {
const int64_t expiry_time = GetExpiryTime(
current_time, /* ignore_soft_enforce_playback_duration */ false);
if (expiry_time == NEVER_EXPIRES) return LLONG_MAX;
if (expiry_time < current_time) return 0;
return expiry_time - current_time;
}
int64_t PolicyTimers::GetPlaybackDurationRemaining(int64_t current_time) {
const int64_t playback_duration = policy_.playback_duration_seconds();
if (playback_duration == 0) return LLONG_MAX;
@@ -85,12 +107,6 @@ bool PolicyTimers::UpdateExpirationTime(int64_t current_time,
return has_expiry_time_been_updated;
}
bool PolicyTimers::HasRenewalDelayExpired(int64_t current_time) {
return policy_.can_renew() && (policy_.renewal_delay_seconds() > 0) &&
(license_start_time_ + policy_.renewal_delay_seconds() <=
current_time);
}
bool PolicyTimers::HasRenewalRetryIntervalExpired(int64_t current_time) {
return policy_.can_renew() &&
(policy_.renewal_retry_interval_seconds() > 0) &&
@@ -107,4 +123,61 @@ bool PolicyTimers::HasRenewalRecoveryDurationExpired(int64_t current_time) {
current_time);
}
int64_t PolicyTimers::GetExpiryTime(
int64_t current_time, bool ignore_soft_enforce_playback_duration) {
const int64_t rental_expiry_time = GetRentalExpiryTime(current_time);
const int64_t playback_expiry_time = GetPlaybackExpiryTime(
current_time, ignore_soft_enforce_playback_duration);
if (rental_expiry_time == NEVER_EXPIRES) return playback_expiry_time;
if (playback_expiry_time == NEVER_EXPIRES) return rental_expiry_time;
return std::min(rental_expiry_time, playback_expiry_time);
}
// For the policy time fields checked in the following methods, a value of 0
// (UNLIMITED_DURATION) indicates that there is no limit to the duration.
// If the fields are UNLIMITED_DURATION then these methods will return
// NEVER_EXPIRES.
int64_t PolicyTimers::GetRentalExpiryTime(int64_t current_time) {
if (policy_.rental_duration_seconds() == UNLIMITED_DURATION)
return NEVER_EXPIRES;
if (HasPlaybackStarted(current_time) &&
policy_.soft_enforce_rental_duration())
return NEVER_EXPIRES;
return license_start_time_ + policy_.rental_duration_seconds();
}
int64_t PolicyTimers::GetPlaybackExpiryTime(
int64_t current_time, bool ignore_soft_enforce_playback_duration) {
if (policy_.playback_duration_seconds() == UNLIMITED_DURATION)
return NEVER_EXPIRES;
if (!HasPlaybackStarted(current_time)) return NEVER_EXPIRES;
if (was_expired_on_load_) return current_time;
if (!ignore_soft_enforce_playback_duration &&
policy_.soft_enforce_playback_duration())
return NEVER_EXPIRES;
return playback_start_time_ + policy_.playback_duration_seconds();
}
int64_t PolicyTimers::GetRentalDurationRemaining(int64_t current_time) {
if (HasLicenseOrRentalOrPlaybackDurationExpired(current_time)) return 0;
const int64_t rental_expiry_time = GetRentalExpiryTime(current_time);
if (rental_expiry_time == NEVER_EXPIRES) return LLONG_MAX;
if (rental_expiry_time < current_time) return 0;
return rental_expiry_time - current_time;
}
bool PolicyTimers::HasRentalOrPlaybackDurationExpired(int64_t current_time) {
const int64_t expiry_time = GetExpiryTime(
current_time, /* ignore_soft_enforce_playback_duration */ false);
return expiry_time != NEVER_EXPIRES && expiry_time <= current_time;
}
} // namespace wvcdm

78
libwvdrmengine/cdm/core/src/policy_timers_v16.cpp
View File

@@ -42,88 +42,10 @@ void PolicyTimersV16::BeginDecryption(int64_t current_time) {
}
}
void PolicyTimersV16::RestorePlaybackTimes(
int64_t current_time, int64_t playback_start_time,
int64_t last_playback_time, int64_t /* grace_period_end_time */) {
playback_start_time_ = (playback_start_time > 0) ? playback_start_time : 0;
last_playback_time_ = (last_playback_time > 0) ? last_playback_time : 0;
const int64_t expiry_time = GetExpiryTime(
current_time, /* ignore_soft_enforce_playback_duration */ true);
was_expired_on_load_ =
expiry_time != NEVER_EXPIRES && expiry_time < current_time;
}
bool PolicyTimersV16::HasRentalOrPlaybackDurationExpired(int64_t current_time) {
const int64_t expiry_time = GetExpiryTime(
current_time, /* ignore_soft_enforce_playback_duration */ false);
return expiry_time != NEVER_EXPIRES && expiry_time <= current_time;
}
int64_t PolicyTimersV16::GetLicenseOrRentalOrPlaybackDurationRemaining(
int64_t current_time) {
const int64_t expiry_time = GetExpiryTime(
current_time, /* ignore_soft_enforce_playback_duration */ false);
if (expiry_time == NEVER_EXPIRES) return LLONG_MAX;
if (expiry_time < current_time) return 0;
return expiry_time - current_time;
}
int64_t PolicyTimersV16::GetRentalDurationRemaining(int64_t current_time) {
if (HasLicenseOrRentalOrPlaybackDurationExpired(current_time)) return 0;
const int64_t rental_expiry_time = GetRentalExpiryTime(current_time);
if (rental_expiry_time == NEVER_EXPIRES) return LLONG_MAX;
if (rental_expiry_time < current_time) return 0;
return rental_expiry_time - current_time;
}
bool PolicyTimersV16::HasRenewalDelayExpired(int64_t current_time) {
return policy_.can_renew() && (policy_.renewal_delay_seconds() > 0) &&
(renewal_start_time_ + policy_.renewal_delay_seconds() <=
current_time);
}
// For the policy time fields checked in the following methods, a value of 0
// (UNLIMITED_DURATION) indicates that there is no limit to the duration.
// If the fields are UNLIMITED_DURATION then these methods will return
// NEVER_EXPIRES.
int64_t PolicyTimersV16::GetRentalExpiryTime(int64_t current_time) {
if (policy_.rental_duration_seconds() == UNLIMITED_DURATION)
return NEVER_EXPIRES;
if (HasPlaybackStarted(current_time) &&
policy_.soft_enforce_rental_duration())
return NEVER_EXPIRES;
return license_start_time_ + policy_.rental_duration_seconds();
}
int64_t PolicyTimersV16::GetPlaybackExpiryTime(
int64_t current_time, bool ignore_soft_enforce_playback_duration) {
if (policy_.playback_duration_seconds() == UNLIMITED_DURATION)
return NEVER_EXPIRES;
if (!HasPlaybackStarted(current_time)) return NEVER_EXPIRES;
if (was_expired_on_load_) return current_time;
if (!ignore_soft_enforce_playback_duration &&
policy_.soft_enforce_playback_duration())
return NEVER_EXPIRES;
return playback_start_time_ + policy_.playback_duration_seconds();
}
int64_t PolicyTimersV16::GetExpiryTime(
int64_t current_time, bool ignore_soft_enforce_playback_duration) {
const int64_t rental_expiry_time = GetRentalExpiryTime(current_time);
const int64_t playback_expiry_time = GetPlaybackExpiryTime(
current_time, ignore_soft_enforce_playback_duration);
if (rental_expiry_time == NEVER_EXPIRES) return playback_expiry_time;
if (playback_expiry_time == NEVER_EXPIRES) return rental_expiry_time;
return std::min(rental_expiry_time, playback_expiry_time);
}
} // namespace wvcdm