Merge branch 'master' of github.com:open-keychain/open-keychain

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/CanonicalizedSecretKey.java

@@ -199,14 +199,6 @@ public class CanonicalizedSecretKey extends CanonicalizedPublicKey {
     private PGPContentSignerBuilder getContentSignerBuilder(int hashAlgo, byte[] nfcSignedHash,
                                                             Date nfcCreationTimestamp) {
         if (mPrivateKeyState == PRIVATE_KEY_STATE_DIVERT_TO_CARD) {
-            // to sign using nfc PgpSignEncrypt is executed two times.
-            // the first time it stops to return the PendingIntent for nfc connection and signing the hash
-            // the second time the signed hash is used.
-            // to get the same hash we cache the timestamp for the second round!
-            if (nfcCreationTimestamp == null) {
-                nfcCreationTimestamp = new Date();
-            }
-
             // use synchronous "NFC based" SignerBuilder
             return new NfcSyncPGPContentSignerBuilder(
                     mSecretKey.getPublicKey().getAlgorithm(), hashAlgo,
@@ -226,6 +218,20 @@ public class CanonicalizedSecretKey extends CanonicalizedPublicKey {
         if (mPrivateKeyState == PRIVATE_KEY_STATE_LOCKED) {
             throw new PrivateKeyNotUnlockedException();
         }
+        if (nfcSignedHash != null && nfcCreationTimestamp == null) {
+            throw new PgpGeneralException("Got nfc hash without timestamp!!");
+        }
+
+        // We explicitly create a signature creation timestamp in this place.
+        // That way, we can inject an artificial one from outside, ie the one
+        // used in previous runs of this function.
+        if (nfcCreationTimestamp == null) {
+            // to sign using nfc PgpSignEncrypt is executed two times.
+            // the first time it stops to return the PendingIntent for nfc connection and signing the hash
+            // the second time the signed hash is used.
+            // to get the same hash we cache the timestamp for the second round!
+            nfcCreationTimestamp = new Date();
+        }
 
         PGPContentSignerBuilder contentSignerBuilder = getContentSignerBuilder(hashAlgo,
                 nfcSignedHash, nfcCreationTimestamp);
@@ -244,10 +250,7 @@ public class CanonicalizedSecretKey extends CanonicalizedPublicKey {
 
             PGPSignatureSubpacketGenerator spGen = new PGPSignatureSubpacketGenerator();
             spGen.setSignerUserID(false, mRing.getPrimaryUserIdWithFallback());
-            if (nfcCreationTimestamp != null) {
             spGen.setSignatureCreationTime(false, nfcCreationTimestamp);
-                Log.d(Constants.TAG, "For NFC: set sig creation time to " + nfcCreationTimestamp);
-            }
             signatureGenerator.setHashedSubpackets(spGen.generate());
             return signatureGenerator;
         } catch (PGPException e) {

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/service/KeychainIntentService.java

@@ -77,6 +77,7 @@ import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.OutputStream;
 import java.util.ArrayList;
+import java.util.Date;
 import java.util.List;
 import java.util.concurrent.atomic.AtomicBoolean;
 
@@ -133,6 +134,8 @@ public class KeychainIntentService extends IntentService implements Progressable
     // encrypt
     public static final String ENCRYPT_SIGNATURE_MASTER_ID = "secret_key_id";
     public static final String ENCRYPT_SIGNATURE_KEY_PASSPHRASE = "secret_key_passphrase";
+    public static final String ENCRYPT_SIGNATURE_NFC_TIMESTAMP = "signature_nfc_timestamp";
+    public static final String ENCRYPT_SIGNATURE_NFC_HASH = "signature_nfc_hash";
     public static final String ENCRYPT_USE_ASCII_ARMOR = "use_ascii_armor";
     public static final String ENCRYPT_ENCRYPTION_KEYS_IDS = "encryption_keys_ids";
     public static final String ENCRYPT_COMPRESSION_ID = "compression_id";
@@ -256,6 +259,10 @@ public class KeychainIntentService extends IntentService implements Progressable
 
                 long sigMasterKeyId = data.getLong(ENCRYPT_SIGNATURE_MASTER_ID);
                 String sigKeyPassphrase = data.getString(ENCRYPT_SIGNATURE_KEY_PASSPHRASE);
+
+                byte[] nfcHash = data.getByteArray(ENCRYPT_SIGNATURE_NFC_HASH);
+                Date nfcTimestamp = (Date) data.getSerializable(ENCRYPT_SIGNATURE_NFC_TIMESTAMP);
+
                 String symmetricPassphrase = data.getString(ENCRYPT_SYMMETRIC_PASSPHRASE);
 
                 boolean useAsciiArmor = data.getBoolean(ENCRYPT_USE_ASCII_ARMOR);
@@ -296,6 +303,10 @@ public class KeychainIntentService extends IntentService implements Progressable
                                 .setSignatureHashAlgorithm(
                                         Preferences.getPreferences(this).getDefaultHashAlgorithm())
                                 .setAdditionalEncryptId(sigMasterKeyId);
+                        if (nfcHash != null && nfcTimestamp != null) {
+                            builder.setNfcState(nfcHash, nfcTimestamp);
+                        }
+
                     } catch (PgpGeneralException e) {
                         // encrypt-only
                         // TODO Just silently drop the requested signature? Shouldn't we throw here?

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/EncryptActivity.java

@@ -4,6 +4,8 @@ import android.content.Intent;
 
 import org.sufficientlysecure.keychain.nfc.NfcActivity;
 
+import java.util.Date;
+
 public class EncryptActivity extends DrawerActivity {
 
     public static final int REQUEST_CODE_PASSPHRASE = 0x00008001;
@@ -19,9 +21,10 @@ public class EncryptActivity extends DrawerActivity {
         // build PendingIntent for Yubikey NFC operations
         Intent intent = new Intent(this, NfcActivity.class);
         intent.setAction(NfcActivity.ACTION_SIGN_HASH);
+
+        // pass params through to activity that it can be returned again later to repeat pgp operation
         intent.putExtra(NfcActivity.EXTRA_DATA, new Intent()); // not used, only relevant to OpenPgpService
         intent.putExtra(NfcActivity.EXTRA_PIN, pin);
-
         intent.putExtra(NfcActivity.EXTRA_NFC_HASH_TO_SIGN, hashToSign);
         intent.putExtra(NfcActivity.EXTRA_NFC_HASH_ALGO, hashAlgo);
         intent.addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP | Intent.FLAG_ACTIVITY_CLEAR_TOP);

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/EncryptTextActivity.java

@@ -28,6 +28,7 @@ import android.support.v4.app.Fragment;
 import android.view.Menu;
 import android.view.MenuItem;
 
+import org.openintents.openpgp.util.OpenPgpApi;
 import org.sufficientlysecure.keychain.Constants;
 import org.sufficientlysecure.keychain.R;
 import org.sufficientlysecure.keychain.api.OpenKeychainIntents;
@@ -42,6 +43,7 @@ import org.sufficientlysecure.keychain.util.Log;
 import org.sufficientlysecure.keychain.ui.util.Notify;
 
 import java.util.ArrayList;
+import java.util.Date;
 import java.util.HashSet;
 import java.util.Set;
 
@@ -70,6 +72,8 @@ public class EncryptTextActivity extends EncryptActivity implements EncryptActiv
     // TODO Constants.key.none? What's wrong with a null value?
     private long mSigningKeyId = Constants.key.none;
     private String mSigningKeyPassphrase = null;
+    private Date mNfcTimestamp = null;
+    private byte[] mNfcHash = null;
     private String mPassphrase = "";
     private boolean mShareAfterEncrypt = false;
     private ArrayList<Uri> mInputUris;
@@ -202,13 +206,13 @@ public class EncryptTextActivity extends EncryptActivity implements EncryptActiv
                         } else if ((pgpResult.getResult() & SignEncryptResult.RESULT_PENDING_NFC) ==
                                 SignEncryptResult.RESULT_PENDING_NFC) {
 
-                            // use after nfc sign
+                            mNfcTimestamp = pgpResult.getNfcTimestamp();
-////                                data.putExtra(OpenPgpApi.EXTRA_NFC_SIG_CREATION_TIMESTAMP, result.getNfcTimestamp().getTime());
                             startNfcSign("123456", pgpResult.getNfcHash(), pgpResult.getNfcAlgo());
                         } else {
                             throw new RuntimeException("Unhandled pending result!");
                         }
-                    } else if (pgpResult.success()) {
+                    } else {
+                        if (pgpResult.success()) {
                             if (mShareAfterEncrypt) {
                                 // Share encrypted message/file
                                 startActivity(sendWithChooserExcludingEncrypt(message));
@@ -219,12 +223,15 @@ public class EncryptTextActivity extends EncryptActivity implements EncryptActiv
                                 // Notify.showNotify(EncryptTextActivity.this,
                                 // R.string.encrypt_sign_clipboard_successful, Notify.Style.INFO);
                             }
-
-                        // reset parameters, TODO: better state saving?
-                        mSigningKeyPassphrase = null;
                         } else {
                             pgpResult.createNotify(EncryptTextActivity.this).show();
                         }
+
+                        // no matter the result, reset parameters
+                        mSigningKeyPassphrase = null;
+                        mNfcHash = null;
+                        mNfcTimestamp = null;
+                    }
                 }
             }
         };
@@ -253,7 +260,7 @@ public class EncryptTextActivity extends EncryptActivity implements EncryptActiv
 
             case REQUEST_CODE_NFC: {
                 if (resultCode == RESULT_OK && data != null) {
-
+                    mNfcHash = data.getByteArrayExtra(OpenPgpApi.EXTRA_NFC_SIGNED_HASH);
                     startEncrypt();
                     return;
                 }
@@ -292,6 +299,8 @@ public class EncryptTextActivity extends EncryptActivity implements EncryptActiv
             data.putLongArray(KeychainIntentService.ENCRYPT_ENCRYPTION_KEYS_IDS, mEncryptionKeyIds);
             data.putString(KeychainIntentService.ENCRYPT_SIGNATURE_KEY_PASSPHRASE, mSigningKeyPassphrase);
             data.putLongArray(KeychainIntentService.ENCRYPT_SIGNATURE_KEY_PASSPHRASE, mEncryptionKeyIds);
+            data.putSerializable(KeychainIntentService.ENCRYPT_SIGNATURE_NFC_TIMESTAMP, mNfcTimestamp);
+            data.putByteArray(KeychainIntentService.ENCRYPT_SIGNATURE_NFC_HASH, mNfcHash);
         }
         return data;
     }

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/widget/ListAwareSwipeRefreshLayout.java

@@ -88,12 +88,16 @@ public class ListAwareSwipeRefreshLayout extends NoScrollableSwipeRefreshLayout
      */
     @Override
     public boolean onTouchEvent(MotionEvent event) {
-        float ratioX = event.getX() / event.getDevice().getMotionRange(MotionEvent.AXIS_X).getMax();
+        // The device may be null. This actually happens
-        float ratioY = event.getY() / event.getDevice().getMotionRange(MotionEvent.AXIS_Y).getMax();
+        if (event.getDevice() != null) {
+            // MotionEvent.AXIS_X is api level 12, for some reason, so we use a constant 0 here
+            float ratioX = event.getX() / event.getDevice().getMotionRange(0).getMax();
+            float ratioY = event.getY() / event.getDevice().getMotionRange(1).getMax();
             // if this is the upper right corner, don't handle as pull to refresh event
             if (ratioX > 0.85f && ratioY < 0.15f) {
                 return false;
             }
+        }
         return super.onTouchEvent(event);
     }