Disabled OAuth for Play store installs

app/src/main/java/eu/faircode/email/FragmentSetup.java

@@ -169,13 +169,15 @@ public class FragmentSetup extends FragmentBase {
                 int order = 1;
                 popupMenu.getMenu().add(Menu.NONE, R.string.title_setup_gmail, order++, R.string.title_setup_gmail);
 
-                for (EmailProvider provider : EmailProvider.loadProfiles(getContext()))
-                    if (provider.oauth != null && (provider.oauth.enabled || BuildConfig.DEBUG))
-                        popupMenu.getMenu()
-                                .add(Menu.NONE, -1, order++, getString(R.string.title_setup_oauth, provider.name))
-                                .setIntent(new Intent(ActivitySetup.ACTION_QUICK_OAUTH)
-                                        .putExtra("id", provider.id)
-                                        .putExtra("name", provider.name));
+                if (!Helper.isPlayStoreInstall() &&
+                        (Helper.hasValidFingerprint(getContext()) || BuildConfig.DEBUG))
+                    for (EmailProvider provider : EmailProvider.loadProfiles(getContext()))
+                        if (provider.oauth != null && (provider.oauth.enabled || BuildConfig.DEBUG))
+                            popupMenu.getMenu()
+                                    .add(Menu.NONE, -1, order++, getString(R.string.title_setup_oauth, provider.name))
+                                    .setIntent(new Intent(ActivitySetup.ACTION_QUICK_OAUTH)
+                                            .putExtra("id", provider.id)
+                                            .putExtra("name", provider.name));
 
                 popupMenu.getMenu().add(Menu.NONE, R.string.title_setup_activesync, order++, R.string.title_setup_activesync);
                 popupMenu.getMenu().add(Menu.NONE, R.string.title_setup_other, order++, R.string.title_setup_other);