From 315ed608ae977f1a25f1cd06a4e2d52ca09e01b2 Mon Sep 17 00:00:00 2001
From: Vincent Breitmoser <valodim@mugenguild.com>
Date: Fri, 9 Oct 2015 13:11:25 +0200
Subject: viewkeyactivity: ask for passphrase for backup only if key has one

---
 .../keychain/ui/ViewKeyActivity.java               | 32 ++++++++++++++++++++--
 1 file changed, 29 insertions(+), 3 deletions(-)

diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ViewKeyActivity.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ViewKeyActivity.java
index 4b3889737..48edbcbd6 100644
--- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ViewKeyActivity.java
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ViewKeyActivity.java
@@ -65,12 +65,14 @@ import org.sufficientlysecure.keychain.R;
 import org.sufficientlysecure.keychain.keyimport.ParcelableKeyRing;
 import org.sufficientlysecure.keychain.operations.results.ImportKeyResult;
 import org.sufficientlysecure.keychain.operations.results.OperationResult;
+import org.sufficientlysecure.keychain.pgp.CanonicalizedSecretKey.SecretKeyType;
 import org.sufficientlysecure.keychain.pgp.KeyRing;
 import org.sufficientlysecure.keychain.pgp.exception.PgpKeyNotFoundException;
 import org.sufficientlysecure.keychain.provider.CachedPublicKeyRing;
 import org.sufficientlysecure.keychain.provider.KeychainContract;
 import org.sufficientlysecure.keychain.provider.KeychainContract.KeyRings;
 import org.sufficientlysecure.keychain.provider.ProviderHelper;
+import org.sufficientlysecure.keychain.provider.ProviderHelper.NotFoundException;
 import org.sufficientlysecure.keychain.service.ImportKeyringParcel;
 import org.sufficientlysecure.keychain.ui.ViewKeyFragment.PostponeType;
 import org.sufficientlysecure.keychain.ui.base.BaseNfcActivity;
@@ -450,9 +452,33 @@ public class ViewKeyActivity extends BaseNfcActivity implements
     }
 
     private void startPassphraseActivity(int requestCode) {
-        Intent intent = new Intent(this, PassphraseDialogActivity.class);
-        intent.putExtra(PassphraseDialogActivity.EXTRA_SUBKEY_ID, mMasterKeyId);
-        startActivityForResult(intent, requestCode);
+
+        if (keyHasPassphrase()) {
+            Intent intent = new Intent(this, PassphraseDialogActivity.class);
+            intent.putExtra(PassphraseDialogActivity.EXTRA_SUBKEY_ID, mMasterKeyId);
+            startActivityForResult(intent, requestCode);
+        } else {
+            startBackupActivity();
+        }
+    }
+
+    private boolean keyHasPassphrase() {
+        try {
+            SecretKeyType secretKeyType =
+                    mProviderHelper.getCachedPublicKeyRing(mMasterKeyId).getSecretKeyType(mMasterKeyId);
+            switch (secretKeyType) {
+                // all of these make no sense to ask
+                case PASSPHRASE_EMPTY:
+                case GNU_DUMMY:
+                case DIVERT_TO_CARD:
+                case UNAVAILABLE:
+                    return false;
+                default:
+                    return true;
+            }
+        } catch (NotFoundException e) {
+            return false;
+        }
     }
 
     private void startBackupActivity() {
-- 
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