1 files changed, 189 insertions, 0 deletions
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/DecryptMessageFragment.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/DecryptMessageFragment.java
new file mode 100644
index 000000000..2169bbd77
--- /dev/null
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/DecryptMessageFragment.java
@@ -0,0 +1,189 @@
+/*
+ * Copyright (C) 2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui;
+
+import android.app.ProgressDialog;
+import android.content.Intent;
+import android.os.Bundle;
+import android.os.Message;
+import android.os.Messenger;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.View.OnClickListener;
+import android.view.ViewGroup;
+import android.widget.EditText;
+
+import com.beardedhen.androidbootstrap.BootstrapButton;
+import com.devspark.appmsg.AppMsg;
+
+import org.openintents.openpgp.OpenPgpSignatureResult;
+import org.sufficientlysecure.keychain.Constants;
+import org.sufficientlysecure.keychain.Id;
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.compatibility.ClipboardReflection;
+import org.sufficientlysecure.keychain.pgp.PgpDecryptVerifyResult;
+import org.sufficientlysecure.keychain.pgp.PgpHelper;
+import org.sufficientlysecure.keychain.service.KeychainIntentService;
+import org.sufficientlysecure.keychain.service.KeychainIntentServiceHandler;
+import org.sufficientlysecure.keychain.util.Log;
+
+import java.util.regex.Matcher;
+
+public class DecryptMessageFragment extends DecryptFragment {
+    public static final String ARG_CIPHERTEXT = "ciphertext";
+
+    // view
+    private EditText mMessage;
+    private BootstrapButton mDecryptButton;
+    private BootstrapButton mDecryptFromCLipboardButton;
+
+    // model
+    private String mCiphertext;
+
+    /**
+     * Inflate the layout for this fragment
+     */
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        View view = inflater.inflate(R.layout.decrypt_message_fragment, container, false);
+
+        mMessage = (EditText) view.findViewById(R.id.message);
+        mDecryptButton = (BootstrapButton) view.findViewById(R.id.action_decrypt);
+        mDecryptFromCLipboardButton = (BootstrapButton) view.findViewById(R.id.action_decrypt_from_clipboard);
+        mDecryptButton.setOnClickListener(new OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                decryptClicked();
+            }
+        });
+        mDecryptFromCLipboardButton.setOnClickListener(new OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                decryptFromClipboardClicked();
+            }
+        });
+
+        return view;
+    }
+
+    @Override
+    public void onActivityCreated(Bundle savedInstanceState) {
+        super.onActivityCreated(savedInstanceState);
+
+        String ciphertext = getArguments().getString(ARG_CIPHERTEXT);
+        if (ciphertext != null) {
+            mMessage.setText(ciphertext);
+            decryptStart(null);
+        }
+    }
+
+    private void decryptClicked() {
+        mCiphertext = mMessage.getText().toString();
+        decryptStart(null);
+    }
+
+    private void decryptFromClipboardClicked() {
+        CharSequence clipboardText = ClipboardReflection.getClipboardText(getActivity());
+
+        // only decrypt if clipboard content is available and a pgp message or cleartext signature
+        if (clipboardText != null) {
+            Matcher matcher = PgpHelper.PGP_MESSAGE.matcher(clipboardText);
+            if (!matcher.matches()) {
+                matcher = PgpHelper.PGP_CLEARTEXT_SIGNATURE.matcher(clipboardText);
+            }
+            if (matcher.matches()) {
+                mCiphertext = matcher.group(1);
+                decryptStart(null);
+            } else {
+                AppMsg.makeText(getActivity(), R.string.error_invalid_data, AppMsg.STYLE_INFO)
+                        .show();
+            }
+        } else {
+            AppMsg.makeText(getActivity(), R.string.error_invalid_data, AppMsg.STYLE_INFO)
+                    .show();
+        }
+    }
+
+    @Override
+    protected void decryptStart(String passphrase) {
+        Log.d(Constants.TAG, "decryptStart");
+
+        // 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_DECRYPT_VERIFY);
+
+        // data
+        data.putInt(KeychainIntentService.TARGET, KeychainIntentService.TARGET_BYTES);
+        data.putByteArray(KeychainIntentService.DECRYPT_CIPHERTEXT_BYTES, mCiphertext.getBytes());
+        data.putString(KeychainIntentService.DECRYPT_PASSPHRASE, passphrase);
+
+        intent.putExtra(KeychainIntentService.EXTRA_DATA, data);
+
+        // Message is received after encrypting is done in KeychainIntentService
+        KeychainIntentServiceHandler saveHandler = new KeychainIntentServiceHandler(getActivity(),
+                getString(R.string.progress_decrypting), ProgressDialog.STYLE_HORIZONTAL) {
+            public void handleMessage(Message message) {
+                // handle messages by standard KeychainIntentServiceHandler first
+                super.handleMessage(message);
+
+                if (message.arg1 == KeychainIntentServiceHandler.MESSAGE_OKAY) {
+                    // get returned data bundle
+                    Bundle returnData = message.getData();
+
+                    PgpDecryptVerifyResult decryptVerifyResult =
+                            returnData.getParcelable(KeychainIntentService.RESULT_DECRYPT_VERIFY_RESULT);
+
+                    if (PgpDecryptVerifyResult.KEY_PASSHRASE_NEEDED == decryptVerifyResult.getStatus()) {
+                        showPassphraseDialog(decryptVerifyResult.getKeyIdPassphraseNeeded());
+                    } else if (PgpDecryptVerifyResult.SYMMETRIC_PASSHRASE_NEEDED ==
+                                    decryptVerifyResult.getStatus()) {
+                        showPassphraseDialog(Id.key.symmetric);
+                    } else {
+                        AppMsg.makeText(getActivity(), R.string.decryption_successful,
+                                AppMsg.STYLE_INFO).show();
+
+                        byte[] decryptedMessage = returnData
+                                .getByteArray(KeychainIntentService.RESULT_DECRYPTED_BYTES);
+                        mMessage.setText(new String(decryptedMessage));
+                        mMessage.setHorizontallyScrolling(false);
+
+                        OpenPgpSignatureResult signatureResult = decryptVerifyResult.getSignatureResult();
+
+                        // display signature result in activity
+                        onSignatureResult(signatureResult);
+                    }
+                }
+            }
+        };
+
+        // Create a new Messenger for the communication back
+        Messenger messenger = new Messenger(saveHandler);
+        intent.putExtra(KeychainIntentService.EXTRA_MESSENGER, messenger);
+
+        // show progress dialog
+        saveHandler.showProgressDialog(getActivity());
+
+        // start service with intent
+        getActivity().startService(intent);
+    }
+
+}