work on ad-hoc yubikey import support

OpenKeychain/src/main/AndroidManifest.xml

@@ -90,6 +90,8 @@
             android:name=".ui.CreateKeyActivity"
             android:windowSoftInputMode="adjustResize"
             android:label="@string/title_manage_my_keys"
+            android:launchMode="singleTop"
+            android:allowTaskReparenting="true"
             android:parentActivityName=".ui.MainActivity">
             <meta-data
                 android:name="android.support.PARENT_ACTIVITY"

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/operations/results/PromoteKeyResult.java

@@ -31,13 +31,18 @@ public class PromoteKeyResult extends OperationResult {
 
     public PromoteKeyResult(Parcel source) {
         super(source);
-        mMasterKeyId = source.readLong();
+        mMasterKeyId = source.readInt() != 0 ? source.readLong() : null;
     }
 
     @Override
     public void writeToParcel(Parcel dest, int flags) {
         super.writeToParcel(dest, flags);
+        if (mMasterKeyId != null) {
+            dest.writeInt(1);
             dest.writeLong(mMasterKeyId);
+        } else {
+            dest.writeInt(0);
+        }
     }
 
     public static Creator<PromoteKeyResult> CREATOR = new Creator<PromoteKeyResult>() {

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

@@ -487,7 +487,7 @@ public class KeychainIntentService extends IntentService implements Progressable
             case ACTION_PROMOTE_KEYRING: {
 
                 // Input
-                long keyRingId = data.getInt(EXPORT_KEY_RING_MASTER_KEY_ID);
+                long keyRingId = data.getLong(PROMOTE_MASTER_KEY_ID);
 
                 // Operation
                 PromoteKeyOperation op = new PromoteKeyOperation(this, providerHelper, this, mActionCanceled);

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

@@ -17,23 +17,18 @@
 
 package org.sufficientlysecure.keychain.ui;
 
-import android.app.PendingIntent;
-import android.content.Intent;
-import android.content.IntentFilter;
-import android.nfc.NfcAdapter;
 import android.os.Bundle;
 import android.support.v4.app.Fragment;
 import android.support.v4.app.FragmentTransaction;
 
-import org.sufficientlysecure.keychain.Constants;
 import org.sufficientlysecure.keychain.R;
-import org.sufficientlysecure.keychain.ui.base.BaseActivity;
+import org.sufficientlysecure.keychain.ui.base.BaseNfcActivity;
-import org.sufficientlysecure.keychain.util.Log;
 import org.sufficientlysecure.keychain.util.Passphrase;
 
+import java.io.IOException;
 import java.util.ArrayList;
 
-public class CreateKeyActivity extends BaseActivity {
+public class CreateKeyActivity extends BaseNfcActivity {
 
     public static final String EXTRA_NAME = "name";
     public static final String EXTRA_EMAIL = "email";
@@ -85,6 +80,13 @@ public class CreateKeyActivity extends BaseActivity {
         }
     }
 
+    @Override
+    protected void onNfcPerform() throws IOException {
+        if (mCurrentFragment instanceof NfcListenerFragment) {
+            ((NfcListenerFragment) mCurrentFragment).onNfcPerform();
+        }
+    }
+
     @Override
     protected void onSaveInstanceState(Bundle outState) {
         super.onSaveInstanceState(outState);
@@ -135,4 +137,8 @@ public class CreateKeyActivity extends BaseActivity {
         getSupportFragmentManager().executePendingTransactions();
     }
 
+    interface NfcListenerFragment {
+        public void onNfcPerform() throws IOException;
+    }
+
 }

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

@@ -17,26 +17,77 @@
 
 package org.sufficientlysecure.keychain.ui;
 
+import java.io.IOException;
+import java.nio.ByteBuffer;
+import java.util.ArrayList;
+import java.util.Arrays;
+
 import android.app.Activity;
+import android.app.ProgressDialog;
 import android.content.Context;
+import android.content.Intent;
+import android.database.Cursor;
+import android.net.Uri;
 import android.os.Bundle;
+import android.os.Message;
+import android.os.Messenger;
 import android.support.v4.app.Fragment;
+import android.support.v4.app.LoaderManager;
+import android.support.v4.content.CursorLoader;
+import android.support.v4.content.Loader;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.EditText;
+import android.widget.TextView;
+import android.widget.ViewAnimator;
 
+import org.sufficientlysecure.keychain.Constants;
 import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.keyimport.ParcelableKeyRing;
+import org.sufficientlysecure.keychain.operations.results.DecryptVerifyResult;
+import org.sufficientlysecure.keychain.operations.results.ImportKeyResult;
+import org.sufficientlysecure.keychain.operations.results.PromoteKeyResult;
+import org.sufficientlysecure.keychain.provider.KeychainContract;
+import org.sufficientlysecure.keychain.provider.KeychainContract.KeyRings;
+import org.sufficientlysecure.keychain.service.KeychainIntentService;
+import org.sufficientlysecure.keychain.service.KeychainIntentService.IOType;
+import org.sufficientlysecure.keychain.service.KeychainIntentServiceHandler;
 import org.sufficientlysecure.keychain.ui.CreateKeyActivity.FragAction;
+import org.sufficientlysecure.keychain.ui.CreateKeyActivity.NfcListenerFragment;
+import org.sufficientlysecure.keychain.ui.dialog.DeleteFileDialogFragment;
+import org.sufficientlysecure.keychain.ui.util.KeyFormattingUtils;
+import org.sufficientlysecure.keychain.ui.util.Notify;
+import org.sufficientlysecure.keychain.ui.util.Notify.Style;
 import org.sufficientlysecure.keychain.ui.widget.NameEditText;
+import org.sufficientlysecure.keychain.util.Log;
+import org.sufficientlysecure.keychain.util.Preferences;
 
 
-public class CreateKeyYubiFragment extends Fragment {
+public class CreateKeyYubiFragment extends Fragment implements NfcListenerFragment,
+        LoaderManager.LoaderCallbacks<Cursor> {
 
     CreateKeyActivity mCreateKeyActivity;
     NameEditText mNameEdit;
     View mBackButton;
     View mNextButton;
+    private TextView mUnknownFingerprint;
+
+    public static final String ARGS_MASTER_KEY_ID = "master_key_id";
+    private byte[] mScannedFingerprint;
+    private long mScannedMasterKeyId;
+    private ViewAnimator mAnimator;
+    private TextView mFingerprint;
+    private TextView mUserId;
+
+    private YubiImportState mState = YubiImportState.SCAN;
+
+    enum YubiImportState {
+        SCAN, // waiting for scan
+        UNKNOWN, // scanned unknown key (ready to import)
+        BAD_FINGERPRINT, // scanned key, bad fingerprint
+        IMPORTED, // imported key (ready to promote)
+    }
 
     private static boolean isEditTextNotEmpty(Context context, EditText editText) {
         boolean output = true;
@@ -55,6 +106,16 @@ public class CreateKeyYubiFragment extends Fragment {
     public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
         View view = inflater.inflate(R.layout.create_yubikey_fragment, container, false);
 
+        mAnimator = (ViewAnimator) view.findViewById(R.id.create_yubikey_animator);
+
+        mUnknownFingerprint = (TextView) view.findViewById(R.id.create_yubikey_unknown_fp);
+
+        mFingerprint = (TextView) view.findViewById(R.id.create_yubikey_fingerprint);
+        mUserId = (TextView) view.findViewById(R.id.create_yubikey_user_id);
+
+        mBackButton = view.findViewById(R.id.create_key_back_button);
+        mNextButton = view.findViewById(R.id.create_key_next_button);
+
         mBackButton.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
@@ -77,14 +138,200 @@ public class CreateKeyYubiFragment extends Fragment {
         mCreateKeyActivity = (CreateKeyActivity) getActivity();
     }
 
+    @Override
+    public void onNfcPerform() throws IOException {
+
+        mScannedFingerprint = mCreateKeyActivity.nfcGetFingerprint(0);
+        mScannedMasterKeyId = getKeyIdFromFingerprint(mScannedFingerprint);
+
+        getLoaderManager().initLoader(0, null, this);
+
+    }
+
+    // These are the rows that we will retrieve.
+    static final String[] UNIFIED_PROJECTION = new String[]{
+            KeychainContract.KeyRings._ID,
+            KeychainContract.KeyRings.MASTER_KEY_ID,
+            KeychainContract.KeyRings.USER_ID,
+            KeychainContract.KeyRings.IS_REVOKED,
+            KeychainContract.KeyRings.IS_EXPIRED,
+            KeychainContract.KeyRings.HAS_ANY_SECRET,
+            KeychainContract.KeyRings.FINGERPRINT,
+    };
+
+    static final int INDEX_MASTER_KEY_ID = 1;
+    static final int INDEX_USER_ID = 2;
+    static final int INDEX_IS_REVOKED = 3;
+    static final int INDEX_IS_EXPIRED = 4;
+    static final int INDEX_HAS_ANY_SECRET = 5;
+    static final int INDEX_FINGERPRINT = 6;
+
+    @Override
+    public Loader<Cursor> onCreateLoader(int id, Bundle args) {
+        Uri baseUri = KeychainContract.KeyRings.buildUnifiedKeyRingUri(
+                KeyRings.buildUnifiedKeyRingUri(mScannedMasterKeyId)
+        );
+        return new CursorLoader(getActivity(), baseUri, UNIFIED_PROJECTION, null, null, null);
+    }
+
+    @Override
+    public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
+        if (data.moveToFirst()) {
+
+            byte[] fingerprint = data.getBlob(INDEX_FINGERPRINT);
+            if (!Arrays.equals(fingerprint, mScannedFingerprint)) {
+                mState = YubiImportState.BAD_FINGERPRINT;
+                Notify.create(getActivity(), "Fingerprint mismatch!", Style.ERROR);
+                return;
+            }
+
+            showKey(data);
+
+        } else {
+            showUnknownKey();
+        }
+    }
+
+    public void showUnknownKey() {
+        String fp = KeyFormattingUtils.convertFingerprintToHex(mScannedFingerprint);
+        mUnknownFingerprint.setText(KeyFormattingUtils.colorizeFingerprint(fp));
+
+        mAnimator.setDisplayedChild(1);
+        mState = YubiImportState.UNKNOWN;
+    }
+
+    public void showKey(Cursor data) {
+        String userId = data.getString(INDEX_USER_ID);
+        boolean hasSecret = data.getInt(INDEX_HAS_ANY_SECRET) != 0;
+
+        String fp = KeyFormattingUtils.convertFingerprintToHex(mScannedFingerprint);
+        mFingerprint.setText(KeyFormattingUtils.colorizeFingerprint(fp));
+
+        mUserId.setText(userId);
+
+        mAnimator.setDisplayedChild(2);
+        mState = YubiImportState.IMPORTED;
+    }
+
+
     private void nextClicked() {
-        if (isEditTextNotEmpty(getActivity(), mNameEdit)) {
-            // save state
-            mCreateKeyActivity.mName = mNameEdit.getText().toString();
 
-            CreateKeyEmailFragment frag = CreateKeyEmailFragment.newInstance();
+        switch (mState) {
-            mCreateKeyActivity.loadFragment(frag, FragAction.TO_RIGHT);
+            case UNKNOWN:
-        }
+                importKey();
+                break;
+            case IMPORTED:
+                promoteKey();
+                break;
+        }
+
+    }
+
+    public void promoteKey() {
+
+        // Message is received after decrypting is done in KeychainIntentService
+        KeychainIntentServiceHandler saveHandler = new KeychainIntentServiceHandler(getActivity()) {
+            public void handleMessage(Message message) {
+                // handle messages by standard KeychainIntentServiceHandler first
+                super.handleMessage(message);
+
+                if (message.arg1 == MessageStatus.OKAY.ordinal()) {
+                    // get returned data bundle
+                    Bundle returnData = message.getData();
+
+                    PromoteKeyResult result =
+                            returnData.getParcelable(DecryptVerifyResult.EXTRA_RESULT);
+
+                    result.createNotify(getActivity()).show();
+                }
+
+            }
+        };
+
+        // Send all information needed to service to decrypt in other thread
+        Intent intent = new Intent(getActivity(), KeychainIntentService.class);
+
+        // fill values for this action
+
+        intent.setAction(KeychainIntentService.ACTION_PROMOTE_KEYRING);
+
+        Bundle data = new Bundle();
+        data.putLong(KeychainIntentService.PROMOTE_MASTER_KEY_ID, mScannedMasterKeyId);
+        intent.putExtra(KeychainIntentService.EXTRA_DATA, data);
+
+        // Create a new Messenger for the communication back
+        Messenger messenger = new Messenger(saveHandler);
+        intent.putExtra(KeychainIntentService.EXTRA_MESSENGER, messenger);
+
+        // start service with intent
+        getActivity().startService(intent);
+
+    }
+
+    public void importKey() {
+
+        // Message is received after decrypting is done in KeychainIntentService
+        KeychainIntentServiceHandler saveHandler = new KeychainIntentServiceHandler(getActivity()) {
+            public void handleMessage(Message message) {
+                // handle messages by standard KeychainIntentServiceHandler first
+                super.handleMessage(message);
+
+                if (message.arg1 == MessageStatus.OKAY.ordinal()) {
+                    // get returned data bundle
+                    Bundle returnData = message.getData();
+
+                    ImportKeyResult result =
+                            returnData.getParcelable(DecryptVerifyResult.EXTRA_RESULT);
+
+                    result.createNotify(getActivity()).show();
+                }
+
+            }
+        };
+
+        // Send all information needed to service to decrypt in other thread
+        Intent intent = new Intent(getActivity(), KeychainIntentService.class);
+
+        // fill values for this action
+        Bundle data = new Bundle();
+
+        intent.setAction(KeychainIntentService.ACTION_IMPORT_KEYRING);
+
+        String hexFp = KeyFormattingUtils.convertFingerprintToHex(mScannedFingerprint);
+        ArrayList<ParcelableKeyRing> keyList = new ArrayList<>();
+        keyList.add(new ParcelableKeyRing(hexFp, null, null));
+        data.putParcelableArrayList(KeychainIntentService.IMPORT_KEY_LIST, keyList);
+
+        {
+            Preferences prefs = Preferences.getPreferences(getActivity());
+            Preferences.CloudSearchPrefs cloudPrefs =
+                    new Preferences.CloudSearchPrefs(true, true, prefs.getPreferredKeyserver());
+            data.putString(KeychainIntentService.IMPORT_KEY_SERVER, cloudPrefs.keyserver);
+        }
+
+        intent.putExtra(KeychainIntentService.EXTRA_DATA, data);
+
+        // Create a new Messenger for the communication back
+        Messenger messenger = new Messenger(saveHandler);
+        intent.putExtra(KeychainIntentService.EXTRA_MESSENGER, messenger);
+
+        // start service with intent
+        getActivity().startService(intent);
+
+    }
+
+
+    @Override
+    public void onLoaderReset(Loader<Cursor> loader) {
+
+    }
+
+    static long getKeyIdFromFingerprint(byte[] fingerprint) {
+        ByteBuffer buf = ByteBuffer.wrap(fingerprint);
+        // skip first 12 bytes of the fingerprint
+        buf.position(12);
+        // the last eight bytes are the key id (big endian, which is default order in ByteBuffer)
+        return buf.getLong();
     }
 
 }

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/base/BaseNfcActivity.java

@@ -18,7 +18,6 @@ import org.spongycastle.util.encoders.Hex;
 import org.sufficientlysecure.keychain.Constants;
 import org.sufficientlysecure.keychain.service.input.CryptoInputParcel;
 import org.sufficientlysecure.keychain.service.input.RequiredInputParcel;
-import org.sufficientlysecure.keychain.ui.NfcOperationActivity;
 import org.sufficientlysecure.keychain.ui.PassphraseDialogActivity;
 import org.sufficientlysecure.keychain.util.Iso7816TLV;
 import org.sufficientlysecure.keychain.util.Log;
@@ -72,7 +71,7 @@ public abstract class BaseNfcActivity extends BaseActivity {
      */
     public void onPause() {
         super.onPause();
-        Log.d(Constants.TAG, "NfcOperationActivity.onPause");
+        Log.d(Constants.TAG, "BaseNfcActivity.onPause");
 
         disableNfcForegroundDispatch();
     }
@@ -83,7 +82,7 @@ public abstract class BaseNfcActivity extends BaseActivity {
      */
     public void onResume() {
         super.onResume();
-        Log.d(Constants.TAG, "NfcOperationActivity.onResume");
+        Log.d(Constants.TAG, "BaseNfcActivity.onResume");
 
         enableNfcForegroundDispatch();
     }
@@ -397,7 +396,7 @@ public abstract class BaseNfcActivity extends BaseActivity {
      */
     public void enableNfcForegroundDispatch() {
         mNfcAdapter = NfcAdapter.getDefaultAdapter(this);
-        Intent nfcI = new Intent(this, NfcOperationActivity.class)
+        Intent nfcI = new Intent(this, getClass())
                 .addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP | Intent.FLAG_ACTIVITY_CLEAR_TOP);
         PendingIntent nfcPendingIntent = PendingIntent.getActivity(this, 0, nfcI, PendingIntent.FLAG_CANCEL_CURRENT);
         IntentFilter[] writeTagFilters = new IntentFilter[]{

OpenKeychain/src/main/res/layout/create_yubikey_fragment.xml

@@ -9,11 +9,19 @@
         android:fillViewport="true"
         android:layout_above="@+id/create_key_buttons">
 
+        <ViewAnimator
+            android:layout_width="fill_parent"
+            android:layout_height="wrap_content"
+            android:inAnimation="@anim/abc_fade_in"
+            android:outAnimation="@anim/abc_fade_out"
+            android:paddingLeft="16dp"
+            android:paddingRight="16dp"
+            android:id="@+id/create_yubikey_animator"
+            >
+
             <LinearLayout
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
-            android:paddingLeft="16dp"
-            android:paddingRight="16dp"
                 android:orientation="vertical">
 
                 <TextView
@@ -22,7 +30,20 @@
                     android:layout_marginTop="16dp"
                     android:layout_marginLeft="8dp"
                     android:textAppearance="?android:attr/textAppearanceMedium"
-                android:text="Hold Yubikey against device dawg" />
+                    android:text="Hold Yubikey against device dawg"
+                    />
+
+                <ImageView
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:src="@drawable/yubikey_phone" />
+
+            </LinearLayout>
+
+            <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:orientation="vertical">
 
                 <TextView
                     android:layout_width="wrap_content"
@@ -30,10 +51,56 @@
                     android:layout_marginTop="16dp"
                     android:layout_marginLeft="8dp"
                     android:textAppearance="?android:attr/textAppearanceMedium"
+                    android:id="@+id/create_yubikey_unknown_fp"
                     android:text="(yubikey fingerprint)" />
 
+                <TextView
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:layout_marginTop="16dp"
+                    android:layout_marginLeft="8dp"
+                    android:textAppearance="?android:attr/textAppearanceMedium"
+                    android:text="Hit next to import this key"
+                    />
+
             </LinearLayout>
 
+            <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:orientation="vertical">
+
+                <TextView
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:layout_marginTop="16dp"
+                    android:layout_marginLeft="8dp"
+                    android:textAppearance="?android:attr/textAppearanceMedium"
+                    android:id="@+id/create_yubikey_fingerprint"
+                    android:text="(yubikey fingerprint)" />
+
+                <TextView
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:layout_marginTop="16dp"
+                    android:layout_marginLeft="8dp"
+                    android:textAppearance="?android:attr/textAppearanceMedium"
+                    android:id="@+id/create_yubikey_user_id"
+                    android:text="(yubikey fingerprint)" />
+
+                <TextView
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:layout_marginTop="16dp"
+                    android:layout_marginLeft="8dp"
+                    android:textAppearance="?android:attr/textAppearanceMedium"
+                    android:text="Hit next to add this Yubikey to your own!"
+                    />
+
+            </LinearLayout>
+
+        </ViewAnimator>
+
     </ScrollView>
 
     <LinearLayout
@@ -79,5 +146,7 @@
             android:gravity="right|center_vertical"
             android:clickable="true"
             style="?android:attr/borderlessButtonStyle" />
+
     </LinearLayout>
+
 </RelativeLayout>