1 files changed, 199 insertions, 0 deletions
diff --git a/OpenPGP-Keychain/src/org/sufficientlysecure/keychain/remote_api/ServiceActivity.java b/OpenPGP-Keychain/src/org/sufficientlysecure/keychain/remote_api/ServiceActivity.java
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index 000000000..055de9be1
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+++ b/OpenPGP-Keychain/src/org/sufficientlysecure/keychain/remote_api/ServiceActivity.java
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+/*
+ * Copyright (C) 2013 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.sufficientlysecure.keychain.remote_api;
+
+import org.sufficientlysecure.keychain.Constants;
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.remote_api.IServiceActivityCallback;
+import org.sufficientlysecure.keychain.helper.PgpMain;
+import org.sufficientlysecure.keychain.provider.ProviderHelper;
+import org.sufficientlysecure.keychain.ui.dialog.PassphraseDialogFragment;
+import org.sufficientlysecure.keychain.util.Log;
+
+import com.actionbarsherlock.app.SherlockFragmentActivity;
+
+import android.content.ComponentName;
+import android.content.Context;
+import android.content.Intent;
+import android.content.ServiceConnection;
+import android.os.Bundle;
+import android.os.Handler;
+import android.os.IBinder;
+import android.os.Message;
+import android.os.Messenger;
+import android.view.View;
+import android.view.View.OnClickListener;
+import android.widget.Button;
+
+public class ServiceActivity extends SherlockFragmentActivity {
+
+    public static final String ACTION_REGISTER = "org.sufficientlysecure.keychain.REGISTER";
+    public static final String ACTION_CACHE_PASSPHRASE = "org.sufficientlysecure.keychain.CRYPTO_CACHE_PASSPHRASE";
+
+    public static final String EXTRA_SECRET_KEY_ID = "secretKeyId";
+    public static final String EXTRA_PACKAGE_NAME = "packageName";
+
+    private IServiceActivityCallback mService;
+    private boolean mServiceBound;
+
+    private ServiceConnection mServiceActivityConnection = new ServiceConnection() {
+        public void onServiceConnected(ComponentName name, IBinder service) {
+            mService = IServiceActivityCallback.Stub.asInterface(service);
+            Log.d(Constants.TAG, "connected to ICryptoServiceActivity");
+            mServiceBound = true;
+        }
+
+        public void onServiceDisconnected(ComponentName name) {
+            mService = null;
+            Log.d(Constants.TAG, "disconnected from ICryptoServiceActivity");
+            mServiceBound = false;
+        }
+    };
+
+    /**
+     * If not already bound, bind!
+     * 
+     * @return
+     */
+    public boolean bindToService() {
+        if (mService == null && !mServiceBound) { // if not already connected
+            try {
+                Log.d(Constants.TAG, "not bound yet");
+
+                Intent serviceIntent = new Intent();
+                serviceIntent.setAction("org.openintents.crypto.ICryptoService");
+                bindService(serviceIntent, mServiceActivityConnection, Context.BIND_AUTO_CREATE);
+
+                return true;
+            } catch (Exception e) {
+                Log.d(Constants.TAG, "Exception", e);
+                return false;
+            }
+        } else { // already connected
+            Log.d(Constants.TAG, "already bound... ");
+            return true;
+        }
+    }
+
+    public void unbindFromService() {
+        unbindService(mServiceActivityConnection);
+    }
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        Log.d(Constants.TAG, "onCreate…");
+
+        // bind to our own crypto service
+        bindToService();
+
+        handleActions(getIntent());
+    }
+
+    @Override
+    protected void onDestroy() {
+        super.onDestroy();
+
+        // unbind from our crypto service
+        if (mServiceActivityConnection != null) {
+            unbindFromService();
+        }
+    }
+
+    protected void handleActions(Intent intent) {
+        String action = intent.getAction();
+        Bundle extras = intent.getExtras();
+
+        if (extras == null) {
+            extras = new Bundle();
+        }
+
+        /**
+         * com.android.crypto actions
+         */
+        if (ACTION_REGISTER.equals(action)) {
+            final String packageName = extras.getString(EXTRA_PACKAGE_NAME);
+
+            setContentView(R.layout.register_crypto_consumer_activity);
+
+            Button allowButton = (Button) findViewById(R.id.register_crypto_consumer_allow);
+            Button disallowButton = (Button) findViewById(R.id.register_crypto_consumer_disallow);
+
+            allowButton.setOnClickListener(new OnClickListener() {
+
+                @Override
+                public void onClick(View v) {
+                    ProviderHelper.addCryptoConsumer(ServiceActivity.this, packageName);
+                    // Intent data = new Intent();
+
+                    setResult(RESULT_OK);
+                    finish();
+                }
+            });
+
+            disallowButton.setOnClickListener(new OnClickListener() {
+
+                @Override
+                public void onClick(View v) {
+                    setResult(RESULT_CANCELED);
+                    finish();
+                }
+            });
+        } else if (ACTION_CACHE_PASSPHRASE.equals(action)) {
+            long secretKeyId = extras.getLong(EXTRA_SECRET_KEY_ID);
+
+            showPassphraseDialog(secretKeyId);
+        } else {
+            Log.e(Constants.TAG, "Wrong action!");
+            setResult(RESULT_CANCELED);
+            finish();
+        }
+    }
+
+    /**
+     * Shows passphrase dialog to cache a new passphrase the user enters for using it later for
+     * encryption. Based on mSecretKeyId it asks for a passphrase to open a private key or it asks
+     * for a symmetric passphrase
+     */
+    private void showPassphraseDialog(long secretKeyId) {
+        // Message is received after passphrase is cached
+        Handler returnHandler = new Handler() {
+            @Override
+            public void handleMessage(Message message) {
+                if (message.what == PassphraseDialogFragment.MESSAGE_OKAY) {
+                    setResult(RESULT_OK);
+                    finish();
+                }
+            }
+        };
+
+        // Create a new Messenger for the communication back
+        Messenger messenger = new Messenger(returnHandler);
+
+        try {
+            PassphraseDialogFragment passphraseDialog = PassphraseDialogFragment.newInstance(this,
+                    messenger, secretKeyId);
+
+            passphraseDialog.show(getSupportFragmentManager(), "passphraseDialog");
+        } catch (PgpMain.PgpGeneralException e) {
+            Log.d(Constants.TAG, "No passphrase for this secret key, encrypt directly!");
+            // send message to handler to start encryption directly
+            returnHandler.sendEmptyMessage(PassphraseDialogFragment.MESSAGE_OKAY);
+        }
+    }
+}