diff options
Diffstat (limited to 'src/org/thialfihar/android/apg/DecryptFileActivity.java')
| -rw-r--r-- | src/org/thialfihar/android/apg/DecryptFileActivity.java | 319 |
1 files changed, 319 insertions, 0 deletions
diff --git a/src/org/thialfihar/android/apg/DecryptFileActivity.java b/src/org/thialfihar/android/apg/DecryptFileActivity.java new file mode 100644 index 000000000..47be98344 --- /dev/null +++ b/src/org/thialfihar/android/apg/DecryptFileActivity.java @@ -0,0 +1,319 @@ +/*
+ * Copyright (C) 2010 Thialfihar <thi@thialfihar.org>
+ *
+ * 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.thialfihar.android.apg;
+
+import java.io.ByteArrayOutputStream;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.security.Security;
+import java.security.SignatureException;
+
+import org.bouncycastle2.jce.provider.BouncyCastleProvider;
+import org.bouncycastle2.openpgp.PGPException;
+import org.openintents.intents.FileManager;
+
+import android.app.Dialog;
+import android.content.ActivityNotFoundException;
+import android.content.Intent;
+import android.net.Uri;
+import android.os.Bundle;
+import android.os.Message;
+import android.view.View;
+import android.view.View.OnClickListener;
+import android.widget.Button;
+import android.widget.EditText;
+import android.widget.ImageButton;
+import android.widget.ImageView;
+import android.widget.LinearLayout;
+import android.widget.TextView;
+import android.widget.Toast;
+
+public class DecryptFileActivity extends BaseActivity {
+ private EditText mFilename = null;
+ private ImageButton mBrowse = null;
+ private Button mDecryptButton = null;
+ private LinearLayout mSignatureLayout = null;
+ private ImageView mSignatureStatusImage = null;
+ private TextView mUserId = null;
+ private TextView mUserIdRest = null;
+
+ private String mInputFilename = null;
+ private String mOutputFilename = null;
+
+ @Override
+ protected void onCreate(Bundle savedInstanceState) {
+ super.onCreate(savedInstanceState);
+ setContentView(R.layout.decrypt_file);
+
+ mFilename = (EditText) findViewById(R.id.filename);
+ mBrowse = (ImageButton) findViewById(R.id.btn_browse);
+ mBrowse.setOnClickListener(new View.OnClickListener() {
+ @Override
+ public void onClick(View v) {
+ openFile();
+ }
+ });
+
+ mDecryptButton = (Button) findViewById(R.id.btn_decrypt);
+ mDecryptButton.setOnClickListener(new OnClickListener() {
+ @Override
+ public void onClick(View v) {
+ decryptClicked();
+ }
+ });
+
+ mSignatureLayout = (LinearLayout) findViewById(R.id.layout_signature);
+ mSignatureStatusImage = (ImageView) findViewById(R.id.ic_signature_status);
+ mUserId = (TextView) findViewById(R.id.main_user_id);
+ mUserIdRest = (TextView) findViewById(R.id.main_user_id_rest);
+
+ mSignatureLayout.setVisibility(View.INVISIBLE);
+ }
+
+ private void openFile() {
+ String filename = mFilename.getText().toString();
+
+ Intent intent = new Intent(FileManager.ACTION_PICK_FILE);
+
+ intent.setData(Uri.parse("file://" + filename));
+
+ intent.putExtra(FileManager.EXTRA_TITLE, "Select file to decrypt...");
+ intent.putExtra(FileManager.EXTRA_BUTTON_TEXT, "Open");
+
+ try {
+ startActivityForResult(intent, Id.request.filename);
+ } catch (ActivityNotFoundException e) {
+ // No compatible file manager was found.
+ Toast.makeText(this, R.string.no_filemanager_installed, Toast.LENGTH_SHORT).show();
+ }
+ }
+
+ private void decryptClicked() {
+ String error = null;
+ String currentFilename = mFilename.getText().toString();
+ if (mInputFilename == null || !mInputFilename.equals(currentFilename)) {
+ mInputFilename = mFilename.getText().toString();
+ File file = new File(mInputFilename);
+ String filename = file.getName();
+ if (filename.endsWith(".asc") || filename.endsWith(".gpg")) {
+ filename = filename.substring(0, filename.length() - 4);
+ }
+ mOutputFilename = Constants.path.app_dir + "/" + filename;
+ }
+
+ if (mInputFilename.equals("")) {
+ Toast.makeText(this, "Select a file first.", Toast.LENGTH_SHORT).show();
+ return;
+ }
+
+ try {
+ InputStream in = new FileInputStream(mInputFilename);
+ setSecretKeyId(Apg.getDecryptionKeyId(in));
+ showDialog(Id.dialog.pass_phrase);
+ } catch (FileNotFoundException e) {
+ error = "file not found: " + e.getLocalizedMessage();
+ } catch (IOException e) {
+ error = e.getLocalizedMessage();
+ } catch (Apg.GeneralException e) {
+ error = e.getLocalizedMessage();
+ }
+ if (error != null) {
+ Toast.makeText(this, "Error: " + error, Toast.LENGTH_SHORT).show();
+ }
+ }
+
+ @Override
+ public void passPhraseCallback(String passPhrase) {
+ super.passPhraseCallback(passPhrase);
+ askForOutputFilename();
+ }
+
+ private void askForOutputFilename() {
+ showDialog(Id.dialog.output_filename);
+ }
+
+ private void decryptStart() {
+ showDialog(Id.dialog.decrypting);
+ startThread();
+ }
+
+ @Override
+ public void run() {
+ String error = null;
+ Security.addProvider(new BouncyCastleProvider());
+
+ Bundle data = new Bundle();
+ Message msg = new Message();
+
+ try {
+ InputStream in = new FileInputStream(mInputFilename);
+ ByteArrayOutputStream out = new ByteArrayOutputStream();
+
+ data = Apg.decrypt(in, out, Apg.getPassPhrase(), this);
+
+ out.close();
+ OutputStream fileOut = new FileOutputStream(mOutputFilename);
+ fileOut.write(out.toByteArray());
+ fileOut.close();
+ } catch (PGPException e) {
+ error = e.getMessage();
+ } catch (IOException e) {
+ error = e.getMessage();
+ } catch (SignatureException e) {
+ error = e.getMessage();
+ e.printStackTrace();
+ } catch (Apg.GeneralException e) {
+ error = e.getMessage();
+ }
+
+ data.putInt("type", Id.message.done);
+
+ if (error != null) {
+ data.putString("error", error);
+ }
+
+ msg.setData(data);
+ sendMessage(msg);
+ }
+
+ @Override
+ protected Dialog onCreateDialog(int id) {
+ switch (id) {
+ case Id.dialog.output_filename: {
+ return FileDialog.build(this, "Decrypt to file",
+ "Please specify which file to decrypt to.\n" +
+ "WARNING! File will be overwritten if it exists.",
+ mOutputFilename,
+ new FileDialog.OnClickListener() {
+
+ @Override
+ public void onOkClick(String filename) {
+ removeDialog(Id.dialog.output_filename);
+ mOutputFilename = filename;
+ decryptStart();
+ }
+
+ @Override
+ public void onCancelClick() {
+ removeDialog(Id.dialog.output_filename);
+ }
+ },
+ getString(R.string.filemanager_title_save),
+ getString(R.string.filemanager_btn_save),
+ Id.request.output_filename);
+ }
+
+ default: {
+ break;
+ }
+ }
+
+ return super.onCreateDialog(id);
+ }
+
+ @Override
+ protected void onActivityResult(int requestCode, int resultCode, Intent data) {
+ switch (requestCode) {
+ case Id.request.filename: {
+ if (resultCode == RESULT_OK && data != null) {
+ String filename = data.getDataString();
+ if (filename != null) {
+ // Get rid of URI prefix:
+ if (filename.startsWith("file://")) {
+ filename = filename.substring(7);
+ }
+ // replace %20 and so on
+ filename = Uri.decode(filename);
+
+ mFilename.setText(filename);
+ }
+ }
+ return;
+ }
+
+ case Id.request.output_filename: {
+ if (resultCode == RESULT_OK && data != null) {
+ String filename = data.getDataString();
+ if (filename != null) {
+ // Get rid of URI prefix:
+ if (filename.startsWith("file://")) {
+ filename = filename.substring(7);
+ }
+ // replace %20 and so on
+ filename = Uri.decode(filename);
+
+ FileDialog.setFilename(filename);
+ }
+ }
+ return;
+ }
+
+ default: {
+ break;
+ }
+ }
+ super.onActivityResult(requestCode, resultCode, data);
+ }
+
+ @Override
+ public void doneCallback(Message msg) {
+ super.doneCallback(msg);
+ Bundle data = msg.getData();
+ removeDialog(Id.dialog.decrypting);
+
+ String error = data.getString("error");
+ if (error != null) {
+ Toast.makeText(DecryptFileActivity.this,
+ "Error: " + data.getString("error"),
+ Toast.LENGTH_SHORT).show();
+ } else {
+ Toast.makeText(DecryptFileActivity.this,
+ "Successfully decrypted.",
+ Toast.LENGTH_SHORT).show();
+ }
+
+ mSignatureLayout.setVisibility(View.INVISIBLE);
+ if (data.getBoolean("signature")) {
+ String userId = data.getString("signatureUserId");
+ long signatureKeyId = data.getLong("signatureKeyId");
+ mUserIdRest.setText("id: " + Long.toHexString(signatureKeyId & 0xffffffffL));
+ if (userId == null) {
+ userId = getResources().getString(R.string.unknown_user_id);
+ }
+ String chunks[] = userId.split(" <", 2);
+ userId = chunks[0];
+ if (chunks.length > 1) {
+ mUserIdRest.setText("<" + chunks[1]);
+ }
+ mUserId.setText(userId);
+
+ if (data.getBoolean("signatureSuccess")) {
+ mSignatureStatusImage.setImageResource(R.drawable.overlay_ok);
+ } else if (data.getBoolean("signatureUnknown")) {
+ mSignatureStatusImage.setImageResource(R.drawable.overlay_error);
+ } else {
+ mSignatureStatusImage.setImageResource(R.drawable.overlay_error);
+ }
+ mSignatureLayout.setVisibility(View.VISIBLE);
+ }
+ }
+}
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