Preserve old password when handling SET_NEW_PASSWORD.

Currently the only way mUserPassword can be set is when it comes
from onActivityResult. This way when the user chooses "Continue
without Pixel Imprint", and we switch ChooseLockGeneric->InternalActivity,
mUserPassword becomes null (it is not preserved in intent extras).
And then this null is used in getLockPasswordIntent which causes the issue.

Another issues is that when the user chooses to use fingerprint,
mHasChallenge is set to true and password is not forwarded to
ChooseLock(Password|Pattern). I changed the intent builders so that both
old password and challenge can be sent at the same time, so the password
is not lost when fingerprint is set.

Bug: 67672081
Test: cd packages/apps/Settings/tests/robotests/ && mma
Test: manual, adb shell am start -a android.app.action.SET_NEW_PASSWORD,
      tried setting pin/password with and without fingerprint.
Test: manual, tried to change lock via Settings -> Security&Location
Test: manual, set pin + fingerprint in Setup Wizard, FBE and FDE devices
Test: manual, set pin + added account, used pin to unlock FRP in SUW
Change-Id: I38d56d84f95c63fef24c2aa1a031d629f22756a1

src/com/android/settings/password/ChooseLockGeneric.java

@@ -179,6 +179,8 @@ public class ChooseLockGeneric extends SettingsActivity {
                 .getBooleanExtra(CONFIRM_CREDENTIALS, true);
             if (getActivity() instanceof ChooseLockGeneric.InternalActivity) {
                 mPasswordConfirmed = !confirmCredentials;
+                mUserPassword = getActivity().getIntent().getStringExtra(
+                        ChooseLockSettingsHelper.EXTRA_KEY_PASSWORD);
             }
             mHideDrawer = getActivity().getIntent().getBooleanExtra(EXTRA_HIDE_DRAWER, false);
 
@@ -198,6 +200,10 @@ public class ChooseLockGeneric extends SettingsActivity {
                 mEncryptionRequestQuality = savedInstanceState.getInt(ENCRYPT_REQUESTED_QUALITY);
                 mEncryptionRequestDisabled = savedInstanceState.getBoolean(
                         ENCRYPT_REQUESTED_DISABLED);
+                if (mUserPassword == null) {
+                    mUserPassword = savedInstanceState.getString(
+                            ChooseLockSettingsHelper.EXTRA_KEY_PASSWORD);
+                }
             }
 
             // a) If this is started from other user, use that user id.
@@ -268,6 +274,10 @@ public class ChooseLockGeneric extends SettingsActivity {
                 // Forward the target user id to  ChooseLockGeneric.
                 chooseLockGenericIntent.putExtra(Intent.EXTRA_USER_ID, mUserId);
                 chooseLockGenericIntent.putExtra(CONFIRM_CREDENTIALS, !mPasswordConfirmed);
+                if (mUserPassword != null) {
+                    chooseLockGenericIntent.putExtra(ChooseLockSettingsHelper.EXTRA_KEY_PASSWORD,
+                            mUserPassword);
+                }
                 startActivityForResult(chooseLockGenericIntent, SKIP_FINGERPRINT_REQUEST);
                 return true;
             } else {
@@ -393,6 +403,9 @@ public class ChooseLockGeneric extends SettingsActivity {
             outState.putBoolean(WAITING_FOR_CONFIRMATION, mWaitingForConfirmation);
             outState.putInt(ENCRYPT_REQUESTED_QUALITY, mEncryptionRequestQuality);
             outState.putBoolean(ENCRYPT_REQUESTED_DISABLED, mEncryptionRequestDisabled);
+            if (mUserPassword != null) {
+                outState.putString(ChooseLockSettingsHelper.EXTRA_KEY_PASSWORD, mUserPassword);
+            }
         }
 
         private void updatePreferencesOrFinish(boolean isRecreatingActivity) {
@@ -580,7 +593,8 @@ public class ChooseLockGeneric extends SettingsActivity {
                             .setUserId(mUserId);
             if (mHasChallenge) {
                 builder.setChallenge(mChallenge);
-            } else {
+            }
+            if (mUserPassword != null) {
                 builder.setPassword(mUserPassword);
             }
             return builder.build();
@@ -593,7 +607,8 @@ public class ChooseLockGeneric extends SettingsActivity {
                             .setUserId(mUserId);
             if (mHasChallenge) {
                 builder.setChallenge(mChallenge);
-            } else {
+            }
+            if (mUserPassword != null) {
                 builder.setPattern(mUserPassword);
             }
             return builder.build();

src/com/android/settings/password/ChooseLockPassword.java

@@ -105,6 +105,7 @@ public class ChooseLockPassword extends SettingsActivity {
             mIntent = new Intent(context, ChooseLockPassword.class);
             mIntent.putExtra(ChooseLockGeneric.CONFIRM_CREDENTIALS, false);
             mIntent.putExtra(EncryptionInterstitial.EXTRA_REQUIRE_PASSWORD, false);
+            mIntent.putExtra(ChooseLockSettingsHelper.EXTRA_KEY_HAS_CHALLENGE, false);
         }
 
         public IntentBuilder setPasswordQuality(int quality) {
@@ -130,7 +131,6 @@ public class ChooseLockPassword extends SettingsActivity {
         }
 
         public IntentBuilder setPassword(String password) {
-            mIntent.putExtra(ChooseLockSettingsHelper.EXTRA_KEY_HAS_CHALLENGE, false);
             mIntent.putExtra(ChooseLockSettingsHelper.EXTRA_KEY_PASSWORD, password);
             return this;
         }

src/com/android/settings/password/ChooseLockPattern.java

@@ -95,6 +95,7 @@ public class ChooseLockPattern extends SettingsActivity {
             mIntent = new Intent(context, ChooseLockPattern.class);
             mIntent.putExtra(EncryptionInterstitial.EXTRA_REQUIRE_PASSWORD, false);
             mIntent.putExtra(ChooseLockGeneric.CONFIRM_CREDENTIALS, false);
+            mIntent.putExtra(ChooseLockSettingsHelper.EXTRA_KEY_HAS_CHALLENGE, false);
         }
 
         public IntentBuilder setUserId(int userId) {
@@ -109,7 +110,6 @@ public class ChooseLockPattern extends SettingsActivity {
         }
 
         public IntentBuilder setPattern(String pattern) {
-            mIntent.putExtra(ChooseLockSettingsHelper.EXTRA_KEY_HAS_CHALLENGE, false);
             mIntent.putExtra(ChooseLockSettingsHelper.EXTRA_KEY_PASSWORD, pattern);
             return this;
         }