1 files changed, 182 insertions, 0 deletions
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/DecryptActivity.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/DecryptActivity.java
new file mode 100644
index 000000000..8533e9072
--- /dev/null
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/DecryptActivity.java
@@ -0,0 +1,182 @@
+/*
+ * Copyright (C) 2012-2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ * 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.sufficientlysecure.keychain.ui;
+
+import android.content.Intent;
+import android.net.Uri;
+import android.os.Bundle;
+import android.support.v4.view.PagerTabStrip;
+import android.support.v4.view.ViewPager;
+import android.widget.Toast;
+
+import org.sufficientlysecure.keychain.Constants;
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.helper.ActionBarHelper;
+import org.sufficientlysecure.keychain.helper.FileHelper;
+import org.sufficientlysecure.keychain.pgp.PgpHelper;
+import org.sufficientlysecure.keychain.ui.adapter.PagerTabStripAdapter;
+import org.sufficientlysecure.keychain.util.Log;
+
+import java.util.regex.Matcher;
+
+public class DecryptActivity extends DrawerActivity {
+
+    /* Intents */
+    public static final String ACTION_DECRYPT = Constants.INTENT_PREFIX + "DECRYPT";
+
+    /* EXTRA keys for input */
+    public static final String EXTRA_TEXT = "text";
+
+    ViewPager mViewPager;
+    PagerTabStrip mPagerTabStrip;
+    PagerTabStripAdapter mTabsAdapter;
+
+    Bundle mMessageFragmentBundle = new Bundle();
+    Bundle mFileFragmentBundle = new Bundle();
+    int mSwitchToTab = PAGER_TAB_MESSAGE;
+
+    private static final int PAGER_TAB_MESSAGE = 0;
+    private static final int PAGER_TAB_FILE = 1;
+
+    private void initView() {
+        mViewPager = (ViewPager) findViewById(R.id.decrypt_pager);
+        mPagerTabStrip = (PagerTabStrip) findViewById(R.id.decrypt_pager_tab_strip);
+
+        mTabsAdapter = new PagerTabStripAdapter(this);
+        mViewPager.setAdapter(mTabsAdapter);
+    }
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        setContentView(R.layout.decrypt_activity);
+
+        // set actionbar without home button if called from another app
+        ActionBarHelper.setBackButton(this);
+
+        initView();
+
+        setupDrawerNavigation(savedInstanceState);
+
+        // Handle intent actions, maybe changes the bundles
+        handleActions(getIntent());
+
+        mTabsAdapter.addTab(DecryptMessageFragment.class,
+            mMessageFragmentBundle, getString(R.string.label_message));
+        mTabsAdapter.addTab(DecryptFileFragment.class,
+            mFileFragmentBundle, getString(R.string.label_file));
+        mViewPager.setCurrentItem(mSwitchToTab);
+    }
+
+
+    /**
+     * Handles all actions with this intent
+     *
+     * @param intent
+     */
+    private void handleActions(Intent intent) {
+        String action = intent.getAction();
+        Bundle extras = intent.getExtras();
+        String type = intent.getType();
+        Uri uri = intent.getData();
+
+        if (extras == null) {
+            extras = new Bundle();
+        }
+
+        /*
+         * Android's Action
+         */
+        if (Intent.ACTION_SEND.equals(action) && type != null) {
+            // When sending to Keychain Decrypt via share menu
+            if ("text/plain".equals(type)) {
+                // Plain text
+                String sharedText = intent.getStringExtra(Intent.EXTRA_TEXT);
+                if (sharedText != null) {
+                    // handle like normal text decryption, override action and extras to later
+                    // executeServiceMethod ACTION_DECRYPT in main actions
+                    extras.putString(EXTRA_TEXT, sharedText);
+                    action = ACTION_DECRYPT;
+                }
+            } else {
+                // Binary via content provider (could also be files)
+                // override uri to get stream from send
+                uri = (Uri) intent.getParcelableExtra(Intent.EXTRA_STREAM);
+                action = ACTION_DECRYPT;
+            }
+        } else if (Intent.ACTION_VIEW.equals(action)) {
+            // Android's Action when opening file associated to Keychain (see AndroidManifest.xml)
+
+            // override action
+            action = ACTION_DECRYPT;
+        }
+
+        String textData = extras.getString(EXTRA_TEXT);
+
+        /**
+         * Main Actions
+         */
+        if (ACTION_DECRYPT.equals(action) && textData != null) {
+            Log.d(Constants.TAG, "textData not null, matching text ...");
+            Matcher matcher = PgpHelper.PGP_MESSAGE.matcher(textData);
+            if (matcher.matches()) {
+                Log.d(Constants.TAG, "PGP_MESSAGE matched");
+                textData = matcher.group(1);
+                // replace non breakable spaces
+                textData = textData.replaceAll("\\xa0", " ");
+
+                mMessageFragmentBundle.putString(DecryptMessageFragment.ARG_CIPHERTEXT, textData);
+                mSwitchToTab = PAGER_TAB_MESSAGE;
+            } else {
+                matcher = PgpHelper.PGP_CLEARTEXT_SIGNATURE.matcher(textData);
+                if (matcher.matches()) {
+                    Log.d(Constants.TAG, "PGP_CLEARTEXT_SIGNATURE matched");
+                    textData = matcher.group(1);
+                    // replace non breakable spaces
+                    textData = textData.replaceAll("\\xa0", " ");
+
+                    mMessageFragmentBundle.putString(DecryptMessageFragment.ARG_CIPHERTEXT, textData);
+                    mSwitchToTab = PAGER_TAB_MESSAGE;
+                } else {
+                    Log.d(Constants.TAG, "Nothing matched!");
+                }
+            }
+        } else if (ACTION_DECRYPT.equals(action) && uri != null) {
+            // get file path from uri
+            String path = FileHelper.getPath(this, uri);
+
+            if (path != null) {
+                mFileFragmentBundle.putString(DecryptFileFragment.ARG_FILENAME, path);
+                mSwitchToTab = PAGER_TAB_FILE;
+            } else {
+                Log.e(Constants.TAG,
+                        "Direct binary data without actual file in filesystem is not supported. " +
+                        "Please use the Remote Service API!");
+                Toast.makeText(this, R.string.error_only_files_are_supported, Toast.LENGTH_LONG)
+                        .show();
+                // end activity
+                finish();
+            }
+        } else {
+            Log.e(Constants.TAG,
+                    "Include the extra 'text' or an Uri with setData() in your Intent!");
+        }
+    }
+
+}