Initial Project Import

src/org/thoughtcrime/securesms/KeyScanningActivity.java

@@ -0,0 +1,99 @@
+/** 
+ * Copyright (C) 2011 Whisper Systems
+ * 
+ * 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.thoughtcrime.securesms;
+
+import org.thoughtcrime.securesms.crypto.SerializableKey;
+import org.thoughtcrime.securesms.util.Base64;
+import org.thoughtcrime.securesms.util.Dialogs;
+
+import android.app.Activity;
+import android.content.Intent;
+import android.view.ContextMenu;
+import android.view.ContextMenu.ContextMenuInfo;
+import android.view.Menu;
+import android.view.MenuItem;
+import android.view.View;
+import android.widget.Toast;
+
+import com.google.zxing.integration.android.IntentIntegrator;
+import com.google.zxing.integration.android.IntentResult;
+
+/**
+ * Activity for initiating/receiving key QR code scans.
+ * 
+ * @author Moxie Marlinspike
+ */
+public abstract class KeyScanningActivity extends Activity {
+
+  private static final int MENU_ITEM_SCAN        = 1;
+  private static final int MENU_ITEM_GET_SCANNED = 2;
+
+  @Override
+  public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
+    menu.add(0, MENU_ITEM_SCAN, Menu.NONE, getScanString());
+    menu.add(0, MENU_ITEM_GET_SCANNED, Menu.NONE, getDisplayString());
+  }
+    
+  @Override
+  public boolean onContextItemSelected(MenuItem item) {
+
+    switch(item.getItemId()) {
+    case MENU_ITEM_SCAN:        initiateScan();    return true;
+    case MENU_ITEM_GET_SCANNED: initiateDisplay(); return true;
+    }
+		
+    return false;
+  }
+
+  @Override
+  public void onActivityResult(int requestCode, int resultCode, Intent intent) {
+    IntentResult scanResult = IntentIntegrator.parseActivityResult(requestCode, resultCode, intent);
+		
+    if ((scanResult != null) && (scanResult.getContents() != null)) {
+      String data = scanResult.getContents();
+			
+      if (data.equals(Base64.encodeBytes(getIdentityKeyToCompare().serialize()))) {
+        Dialogs.displayAlert(this, getVerifiedTitle(), getVerifiedMessage(), android.R.drawable.ic_dialog_info);
+      } else {
+        Dialogs.displayAlert(this, getNotVerifiedTitle(), getNotVerifiedMessage(), android.R.drawable.ic_dialog_alert);
+      }
+    } else {
+      Toast.makeText(this, "No scanned key found!", Toast.LENGTH_LONG).show();
+    }
+  }
+	
+  protected void initiateScan() {
+    IntentIntegrator.initiateScan(this);
+  }
+	
+  protected void initiateDisplay() {
+    IntentIntegrator.shareText(this, Base64.encodeBytes(getIdentityKeyToDisplay().serialize()));
+  }
+
+  protected abstract String getScanString();
+  protected abstract String getDisplayString();
+
+  protected abstract String getNotVerifiedTitle();
+  protected abstract String getNotVerifiedMessage();
+
+  protected abstract SerializableKey getIdentityKeyToCompare();
+  protected abstract SerializableKey getIdentityKeyToDisplay();
+	
+  protected abstract String getVerifiedTitle();
+  protected abstract String getVerifiedMessage();
+		
+}