Remove timeout from IFace generateChallenge
Bug: 181699471
Test: atest VtsHalBiometricsFaceTargetTest
Change-Id: Ief068efc3a2c12fbc6b7d89229355ffbcc1b279c
diff --git a/biometrics/face/aidl/aidl_api/android.hardware.biometrics.face/current/android/hardware/biometrics/face/ISession.aidl b/biometrics/face/aidl/aidl_api/android.hardware.biometrics.face/current/android/hardware/biometrics/face/ISession.aidl
index 4aef61a..205429b 100644
--- a/biometrics/face/aidl/aidl_api/android.hardware.biometrics.face/current/android/hardware/biometrics/face/ISession.aidl
+++ b/biometrics/face/aidl/aidl_api/android.hardware.biometrics.face/current/android/hardware/biometrics/face/ISession.aidl
@@ -34,7 +34,7 @@
package android.hardware.biometrics.face;
@VintfStability
interface ISession {
- void generateChallenge(in int cookie, in int timeoutSec);
+ void generateChallenge(in int cookie);
void revokeChallenge(in int cookie, in long challenge);
android.hardware.biometrics.common.ICancellationSignal enroll(in int cookie, in android.hardware.keymaster.HardwareAuthToken hat, in android.hardware.biometrics.face.EnrollmentType type, in android.hardware.biometrics.face.Feature[] features, in android.hardware.common.NativeHandle previewSurface);
android.hardware.biometrics.common.ICancellationSignal authenticate(in int cookie, in long operationId);
diff --git a/biometrics/face/aidl/android/hardware/biometrics/face/ISession.aidl b/biometrics/face/aidl/android/hardware/biometrics/face/ISession.aidl
index 6f2014a..66c7c38 100644
--- a/biometrics/face/aidl/android/hardware/biometrics/face/ISession.aidl
+++ b/biometrics/face/aidl/android/hardware/biometrics/face/ISession.aidl
@@ -45,7 +45,7 @@
* to allow addition of biometric enrollments.
* To secure this path, the following path is taken:
* 1) Upon user requesting face enroll, the framework requests
- * IFace#generateChallenge
+ * ISession#generateChallenge
* 2) Framework sends the challenge to the credential subsystem, and upon credential
* confirmation, a HAT is created, containing the challenge in the "challenge" field.
* 3) Framework sends the HAT to the HAL, e.g. ISession#enroll.
@@ -53,11 +53,10 @@
* 5) Implementation now has confidence that the user entered their credential to allow
* biometric enrollment.
*
- * Note that the interface allows multiple in-flight challenges. For example, invoking
- * generateChallenge(0, 0, timeoutSec) twice does not invalidate the first challenge. The
- * challenge is invalidated only when:
- * 1) The provided timeout expires, or
- * 2) IFace#revokeChallenge is invoked
+ * Note that this interface allows multiple in-flight challenges. Invoking generateChallenge
+ * twice does not invalidate the first challenge. The challenge is invalidated only when:
+ * 1) Its lifespan exceeds the HAL's internal challenge timeout
+ * 2) IFingerprint#revokeChallenge is invoked
*
* For example, the following is a possible table of valid challenges:
* ----------------------------------------------
@@ -70,9 +69,8 @@
* ----------------------------------------------
*
* @param cookie A unique number identifying this operation
- * @param timeoutSec Duration for which the challenge is valid for
*/
- void generateChallenge(in int cookie, in int timeoutSec);
+ void generateChallenge(in int cookie);
/**
* revokeChallenge:
@@ -113,7 +111,7 @@
*
* Before capturing face data, the implementation must first verify the authenticity and
* integrity of the provided HardwareAuthToken. In addition, it must check that the challenge
- * within the provided HardwareAuthToken is valid. See IFace#generateChallenge. If any of
+ * within the provided HardwareAuthToken is valid. See ISession#generateChallenge. If any of
* the above checks fail, the framework must be notified via ISessionCallback#onError and the
* HAL must notify the framework when it returns to the idle state. See
* Error::UNABLE_TO_PROCESS.
diff --git a/biometrics/face/aidl/default/Session.cpp b/biometrics/face/aidl/default/Session.cpp
index a7130e6..ce6c557 100644
--- a/biometrics/face/aidl/default/Session.cpp
+++ b/biometrics/face/aidl/default/Session.cpp
@@ -37,7 +37,7 @@
Session::Session(std::shared_ptr<ISessionCallback> cb) : cb_(std::move(cb)) {}
-ndk::ScopedAStatus Session::generateChallenge(int32_t /*cookie*/, int32_t /*timeoutSec*/) {
+ndk::ScopedAStatus Session::generateChallenge(int32_t /*cookie*/) {
LOG(INFO) << "generateChallenge";
if (cb_) {
cb_->onStateChanged(0, SessionState::GENERATING_CHALLENGE);
diff --git a/biometrics/face/aidl/default/Session.h b/biometrics/face/aidl/default/Session.h
index 0651726..eb9ae83 100644
--- a/biometrics/face/aidl/default/Session.h
+++ b/biometrics/face/aidl/default/Session.h
@@ -30,7 +30,7 @@
public:
explicit Session(std::shared_ptr<ISessionCallback> cb);
- ndk::ScopedAStatus generateChallenge(int32_t cookie, int32_t timeoutSec) override;
+ ndk::ScopedAStatus generateChallenge(int32_t cookie) override;
ndk::ScopedAStatus revokeChallenge(int32_t cookie, int64_t challenge) override;