Remove KBS feature flag.

app/src/main/java/org/thoughtcrime/securesms/lock/RegistrationLockDialog.java

@@ -212,11 +212,9 @@ public final class RegistrationLockDialog {
         dialog.dismiss();
         RegistrationLockReminders.scheduleReminder(context, true);
 
-        if (FeatureFlags.kbs()) {
         Log.i(TAG, "Pin V1 successfully remembered, scheduling a migration to V2");
         ApplicationDependencies.getJobManager().add(new RegistrationPinV2MigrationJob());
       }
-      }
     });
   }
 
@@ -285,7 +283,6 @@ public final class RegistrationLockDialog {
           @Override
           protected Boolean doInBackground(Void... voids) {
             try {
-              if (FeatureFlags.kbs()) {
               Log.i(TAG, "Setting pin on KBS");
 
               KbsValues                         kbsValues        = SignalStore.kbsValues();
@@ -305,12 +302,6 @@ public final class RegistrationLockDialog {
 
               kbsValues.setRegistrationLockMasterKey(restoredData, PinHashing.localPinHash(pinValue));
               TextSecurePreferences.clearOldRegistrationLockPin(context);
-              } else {
-                Log.i(TAG, "Setting V1 pin");
-                SignalServiceAccountManager accountManager = ApplicationDependencies.getSignalServiceAccountManager();
-                accountManager.setPin(pinValue);
-                TextSecurePreferences.setDeprecatedRegistrationLockPin(context, pinValue);
-              }
               TextSecurePreferences.setRegistrationLockLastReminderTime(context, System.currentTimeMillis());
               TextSecurePreferences.setRegistrationLockNextReminderInterval(context, RegistrationLockReminders.INITIAL_INTERVAL);
               return true;

app/src/main/java/org/thoughtcrime/securesms/migrations/RegistrationPinV2MigrationJob.java

@@ -13,7 +13,6 @@ import org.thoughtcrime.securesms.keyvalue.KbsValues;
 import org.thoughtcrime.securesms.keyvalue.SignalStore;
 import org.thoughtcrime.securesms.lock.PinHashing;
 import org.thoughtcrime.securesms.logging.Log;
-import org.thoughtcrime.securesms.util.FeatureFlags;
 import org.thoughtcrime.securesms.util.TextSecurePreferences;
 import org.whispersystems.signalservice.api.KeyBackupService;
 import org.whispersystems.signalservice.api.KeyBackupServicePinException;
@@ -57,11 +56,6 @@ public final class RegistrationPinV2MigrationJob extends BaseJob {
 
   @Override
   protected void onRun() throws IOException, UnauthenticatedResponseException, KeyBackupServicePinException {
-    if (!FeatureFlags.kbs()) {
-      Log.i(TAG, "Not migrating pin to KBS");
-      return;
-    }
-
     if (!TextSecurePreferences.isV1RegistrationLockEnabled(context)) {
       Log.i(TAG, "Registration lock disabled");
       return;

app/src/main/java/org/thoughtcrime/securesms/registration/service/CodeVerificationRequest.java

@@ -27,7 +27,6 @@ import org.thoughtcrime.securesms.push.AccountManagerFactory;
 import org.thoughtcrime.securesms.recipients.RecipientId;
 import org.thoughtcrime.securesms.service.DirectoryRefreshListener;
 import org.thoughtcrime.securesms.service.RotateSignedPreKeyListener;
-import org.thoughtcrime.securesms.util.FeatureFlags;
 import org.thoughtcrime.securesms.util.TextSecurePreferences;
 import org.whispersystems.libsignal.IdentityKeyPair;
 import org.whispersystems.libsignal.state.PreKeyRecord;
@@ -248,11 +247,9 @@ public final class CodeVerificationRequest {
       //noinspection deprecation Only acceptable place to write the old pin enabled state.
       TextSecurePreferences.setV1RegistrationLockEnabled(context, pin != null);
       if (pin != null) {
-        if (FeatureFlags.kbs()) {
         Log.i(TAG, "Pin V1 successfully entered during registration, scheduling a migration to Pin V2");
         ApplicationDependencies.getJobManager().add(new RegistrationPinV2MigrationJob());
       }
-      }
     } else {
       SignalStore.kbsValues().setRegistrationLockMasterKey(kbsData, PinHashing.localPinHash(pin));
       repostPinToResetTries(context, pin, kbsData);

app/src/main/java/org/thoughtcrime/securesms/util/FeatureFlags.java

@@ -50,7 +50,6 @@ public final class FeatureFlags {
   private static final String PROFILE_DISPLAY            = generateKey("profileDisplay");
   private static final String MESSAGE_REQUESTS           = generateKey("messageRequests");
   private static final String USERNAMES                  = generateKey("usernames");
-  private static final String KBS                        = generateKey("kbs");
   private static final String STORAGE_SERVICE            = generateKey("storageService");
   private static final String PINS_FOR_ALL               = generateKey("beta.pinsForAll"); // TODO [alex] remove beta prefix
   private static final String PINS_MEGAPHONE_KILL_SWITCH = generateKey("pinsMegaphoneKillSwitch");
@@ -76,7 +75,6 @@ public final class FeatureFlags {
    * more burden on the reader to ensure that the app experience remains consistent.
    */
   private static final Set<String> HOT_SWAPPABLE = Sets.newHashSet(
-    KBS,
     PINS_MEGAPHONE_KILL_SWITCH
   );
 
@@ -144,16 +142,9 @@ public final class FeatureFlags {
     return value;
   }
 
-  /** Set or migrate PIN to KBS */
+  /** Storage service. */
-  public static boolean kbs() {
-    return getValue(KBS, false);
-  }
-
-  /** Storage service. Requires {@link #kbs()}. */
   public static boolean storageService() {
-    boolean value = getValue(STORAGE_SERVICE, false);
+    return getValue(STORAGE_SERVICE, false);
-    if (value && !kbs()) throw new MissingFlagRequirementError();
-    return value;
   }
 
   /** Enables new KBS UI and notices but does not require user to set a pin */

app/src/main/java/org/thoughtcrime/securesms/util/TextSecurePreferences.java

@@ -160,7 +160,6 @@ public class TextSecurePreferences {
   @Deprecated
   private static final String REGISTRATION_LOCK_PIN_PREF_V1            = "pref_registration_lock_pin";
 
-  private static final String REGISTRATION_LOCK_LAST_REMINDER_TIME          = "pref_registration_lock_last_reminder_time";
   private static final String REGISTRATION_LOCK_LAST_REMINDER_TIME_POST_KBS = "pref_registration_lock_last_reminder_time_post_kbs";
   private static final String REGISTRATION_LOCK_NEXT_REMINDER_INTERVAL      = "pref_registration_lock_next_reminder_interval";
 
@@ -272,16 +271,11 @@ public class TextSecurePreferences {
   }
 
   public static long getRegistrationLockLastReminderTime(@NonNull Context context) {
-    return getLongPreference(context, getAppropriateReminderKey(), 0);
+    return getLongPreference(context, REGISTRATION_LOCK_LAST_REMINDER_TIME_POST_KBS, 0);
   }
 
   public static void setRegistrationLockLastReminderTime(@NonNull Context context, long time) {
-    setLongPreference(context, getAppropriateReminderKey(), time);
+    setLongPreference(context, REGISTRATION_LOCK_LAST_REMINDER_TIME_POST_KBS, time);
-  }
-
-  private static String getAppropriateReminderKey() {
-    return FeatureFlags.kbs() ? REGISTRATION_LOCK_LAST_REMINDER_TIME_POST_KBS
-                              : REGISTRATION_LOCK_LAST_REMINDER_TIME;
   }
 
   public static long getRegistrationLockNextReminderInterval(@NonNull Context context) {

libsignal/service/src/main/java/org/whispersystems/signalservice/api/SignalServiceAccountManager.java

@@ -121,14 +121,6 @@ public class SignalServiceAccountManager {
     return this.pushServiceSocket.getSenderCertificateLegacy();
   }
 
-  /**
-   * @deprecated Remove this method once KBS is live.
-   */
-  @Deprecated
-  public void setPin(String pin) throws IOException {
-    this.pushServiceSocket.setPin(pin);
-  }
-
   /**
    * V1 Pin setting has been replaced by KeyBackupService.
    * Now you can only remove the old pin but there is no need to remove the old pin if setting a KBS Pin.

libsignal/service/src/main/java/org/whispersystems/signalservice/internal/push/PushServiceSocket.java

@@ -297,11 +297,6 @@ public class PushServiceSocket {
     makeServiceRequest(String.format(Locale.US, REQUEST_PUSH_CHALLENGE, gcmRegistrationId, e164number), "GET", null);
   }
 
-  public void setPin(String pin) throws IOException {
-    RegistrationLock accountLock = new RegistrationLock(pin);
-    makeServiceRequest(PIN_PATH, "PUT", JsonUtil.toJson(accountLock));
-  }
-
   /** Note: Setting a KBS Pin will clear this */
   public void removePin() throws IOException {
     makeServiceRequest(PIN_PATH, "DELETE", null);