Merge branch 'trz/rebase' into trz/rename

13 files changed, 400 insertions, 204 deletions

diff --git a/src/main/java/de/thedevstack/conversationsplus/ui/ConferenceDetailsActivity.java b/src/main/java/de/thedevstack/conversationsplus/ui/ConferenceDetailsActivity.java
index c1b5ccc6..12ff2a52 100644
--- a/src/main/java/de/thedevstack/conversationsplus/ui/ConferenceDetailsActivity.java
+++ b/src/main/java/de/thedevstack/conversationsplus/ui/ConferenceDetailsActivity.java
@@ -334,7 +334,7 @@ public class ConferenceDetailsActivity extends XmppActivity implements OnConvers
 	@Override
 	public boolean onCreateOptionsMenu(Menu menu) {
 		getMenuInflater().inflate(R.menu.muc_details, menu);
-		return true;
+		return super.onCreateOptionsMenu(menu);
 	}
 
 	@Override
diff --git a/src/main/java/de/thedevstack/conversationsplus/ui/ContactDetailsActivity.java b/src/main/java/de/thedevstack/conversationsplus/ui/ContactDetailsActivity.java
index aaa19fc5..a18fd848 100644
--- a/src/main/java/de/thedevstack/conversationsplus/ui/ContactDetailsActivity.java
+++ b/src/main/java/de/thedevstack/conversationsplus/ui/ContactDetailsActivity.java
@@ -297,7 +297,7 @@ public class ContactDetailsActivity extends XmppActivity implements OnAccountUpd
 			edit.setVisible(false);
 			delete.setVisible(false);
 		}
-		return true;
+		return super.onCreateOptionsMenu(menu);
 	}
 
 	private void populateView() {
diff --git a/src/main/java/de/thedevstack/conversationsplus/ui/ConversationActivity.java b/src/main/java/de/thedevstack/conversationsplus/ui/ConversationActivity.java
index 1a4ccb8c..1546de27 100644
--- a/src/main/java/de/thedevstack/conversationsplus/ui/ConversationActivity.java
+++ b/src/main/java/de/thedevstack/conversationsplus/ui/ConversationActivity.java
@@ -415,7 +415,7 @@ public class ConversationActivity extends XmppActivity
 					menuContactDetails.setVisible(false);
 					menuAttach.setVisible(getSelectedConversation().getAccount().httpUploadAvailable() && getSelectedConversation().getMucOptions().participating());
 					menuInviteContact.setVisible(getSelectedConversation().getMucOptions().canInvite());
-					menuSecure.setVisible(Config.supportOpenPgp() && Config.multipleEncryptionChoices()); //only if pgp is supported we have a choice
+					menuSecure.setVisible((Config.supportOpenPgp() || Config.supportOmemo()) && Config.multipleEncryptionChoices()); //only if pgp is supported we have a choice
 				} else {
 					menuMucDetails.setVisible(false);
 					menuSecure.setVisible(Config.multipleEncryptionChoices());
@@ -427,7 +427,7 @@ public class ConversationActivity extends XmppActivity
 				}
 			}
 		}
-		return true;
+		return super.onCreateOptionsMenu(menu);
 	}
 
 	protected void selectPresenceToAttachFile(final int attachmentChoice, final int encryption) {
@@ -863,8 +863,8 @@ public class ConversationActivity extends XmppActivity
 			axolotl.setVisible(Config.supportOmemo());
 			if (conversation.getMode() == Conversation.MODE_MULTI) {
 				otr.setVisible(false);
-				axolotl.setVisible(false);
-			} else if (!conversation.getAccount().getAxolotlService().isContactAxolotlCapable(conversation.getContact())) {
+			}
+			if (!conversation.getAccount().getAxolotlService().isConversationAxolotlCapable(conversation)) {
 				axolotl.setEnabled(false);
 			}
 			switch (conversation.getNextEncryption()) {
@@ -1343,49 +1343,64 @@ public class ConversationActivity extends XmppActivity
 
 			}
 		} else {
-            mPendingImageUris.clear();
-            mPendingFileUris.clear();
-            if (requestCode == ConversationActivity.REQUEST_DECRYPT_PGP) {
-                mConversationFragment.onActivityResult(requestCode, resultCode, data);
-            }
-            if (requestCode == REQUEST_BATTERY_OP) {
-                setNeverAskForBatteryOptimizationsAgain();
-            }
-		}
-	}
-
-    private void setNeverAskForBatteryOptimizationsAgain() {
-        getPreferences().edit().putBoolean("show_battery_optimization", false).commit();
-    }
-
-    private void openBatteryOptimizationDialogIfNeeded() {
-        if (showBatteryOptimizationWarning() && getPreferences().getBoolean("show_battery_optimization", true)) {
-            AlertDialog.Builder builder = new AlertDialog.Builder(this);
-            builder.setTitle(R.string.battery_optimizations_enabled);
-            builder.setMessage(R.string.battery_optimizations_enabled_dialog);
-            builder.setPositiveButton(R.string.next, new OnClickListener() {
-                @Override
-                public void onClick(DialogInterface dialog, int which) {
-                    Intent intent = new Intent(Settings.ACTION_REQUEST_IGNORE_BATTERY_OPTIMIZATIONS);
-                    Uri uri = Uri.parse("package:" + getPackageName());
-                    intent.setData(uri);
-                    startActivityForResult(intent, REQUEST_BATTERY_OP);
-                }
-            });
-            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) {
-                builder.setOnDismissListener(new DialogInterface.OnDismissListener() {
-                    @Override
-                    public void onDismiss(DialogInterface dialog) {
-                        setNeverAskForBatteryOptimizationsAgain();
-                    }
-                });
-            }
-            builder.create().show();
-        }
-    }
+			mPendingImageUris.clear();
+			mPendingFileUris.clear();
+			if (requestCode == ConversationActivity.REQUEST_DECRYPT_PGP) {
+				mConversationFragment.onActivityResult(requestCode, resultCode, data);
+			}
+			if (requestCode == REQUEST_BATTERY_OP) {
+				setNeverAskForBatteryOptimizationsAgain();
+			}
+		}
+	}
+
+	private void setNeverAskForBatteryOptimizationsAgain() {
+		getPreferences().edit().putBoolean("show_battery_optimization", false).commit();
+	}
+
+	private void openBatteryOptimizationDialogIfNeeded() {
+		if (hasAccountWithoutPush()
+				&& isOptimizingBattery()
+				&& getPreferences().getBoolean("show_battery_optimization", true)) {
+			AlertDialog.Builder builder = new AlertDialog.Builder(this);
+			builder.setTitle(R.string.battery_optimizations_enabled);
+			builder.setMessage(R.string.battery_optimizations_enabled_dialog);
+			builder.setPositiveButton(R.string.next, new OnClickListener() {
+				@Override
+				public void onClick(DialogInterface dialog, int which) {
+					Intent intent = new Intent(Settings.ACTION_REQUEST_IGNORE_BATTERY_OPTIMIZATIONS);
+					Uri uri = Uri.parse("package:" + getPackageName());
+					intent.setData(uri);
+					startActivityForResult(intent, REQUEST_BATTERY_OP);
+				}
+			});
+			if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) {
+				builder.setOnDismissListener(new DialogInterface.OnDismissListener() {
+					@Override
+					public void onDismiss(DialogInterface dialog) {
+						setNeverAskForBatteryOptimizationsAgain();
+					}
+				});
+			}
+			builder.create().show();
+		}
+	}
+
+	private boolean hasAccountWithoutPush() {
+		for(Account account : xmppConnectionService.getAccounts()) {
+			if (account.getStatus() != Account.State.DISABLED
+					&& !xmppConnectionService.getPushManagementService().available(account)) {
+				return true;
+			}
+		}
+		return false;
+	}
 
 	private void attachLocationToConversation(Conversation conversation, Uri uri) {
-		xmppConnectionService.attachLocationToConversation(conversation, uri, new UiCallback<Message>() {
+		if (conversation == null) {
+			return;
+		}
+		xmppConnectionService.attachLocationToConversation(conversation,uri, new UiCallback<Message>() {
 
 			@Override
 			public void success(Message message) {
@@ -1502,18 +1517,23 @@ public class ConversationActivity extends XmppActivity
 
 	protected boolean trustKeysIfNeeded(int requestCode, int attachmentChoice) {
 		AxolotlService axolotlService = mSelectedConversation.getAccount().getAxolotlService();
-		Contact contact = mSelectedConversation.getContact();
+		final List<Jid> targets = axolotlService.getCryptoTargets(mSelectedConversation);
+		boolean hasUnaccepted = !mSelectedConversation.getAcceptedCryptoTargets().containsAll(targets);
 		boolean hasUndecidedOwn = !axolotlService.getKeysWithTrust(XmppAxolotlSession.Trust.UNDECIDED).isEmpty();
-		boolean hasUndecidedContact = !axolotlService.getKeysWithTrust(XmppAxolotlSession.Trust.UNDECIDED,contact).isEmpty();
+		boolean hasUndecidedContacts = !axolotlService.getKeysWithTrust(XmppAxolotlSession.Trust.UNDECIDED, targets).isEmpty();
 		boolean hasPendingKeys = !axolotlService.findDevicesWithoutSession(mSelectedConversation).isEmpty();
-		boolean hasNoTrustedKeys = axolotlService.getNumTrustedKeys(mSelectedConversation.getContact()) == 0;
-		if(hasUndecidedOwn || hasUndecidedContact || hasPendingKeys || hasNoTrustedKeys) {
+		boolean hasNoTrustedKeys = axolotlService.anyTargetHasNoTrustedKeys(targets);
+		if(hasUndecidedOwn || hasUndecidedContacts || hasPendingKeys || hasNoTrustedKeys || hasUnaccepted) {
 			axolotlService.createSessionsIfNeeded(mSelectedConversation);
 			Intent intent = new Intent(getApplicationContext(), TrustKeysActivity.class);
-			intent.putExtra("contact", mSelectedConversation.getContact().getJid().toBareJid().toString());
+			String[] contacts = new String[targets.size()];
+			for(int i = 0; i < contacts.length; ++i) {
+				contacts[i] = targets.get(i).toString();
+			}
+			intent.putExtra("contacts", contacts);
 			intent.putExtra(EXTRA_ACCOUNT, mSelectedConversation.getAccount().getJid().toBareJid().toString());
 			intent.putExtra("choice", attachmentChoice);
-			intent.putExtra("has_no_trusted", hasNoTrustedKeys);
+			intent.putExtra("conversation",mSelectedConversation.getUuid());
 			startActivityForResult(intent, requestCode);
 			return true;
 		} else {
diff --git a/src/main/java/de/thedevstack/conversationsplus/ui/ConversationFragment.java b/src/main/java/de/thedevstack/conversationsplus/ui/ConversationFragment.java
index 2828e27e..44132ce3 100644
--- a/src/main/java/de/thedevstack/conversationsplus/ui/ConversationFragment.java
+++ b/src/main/java/de/thedevstack/conversationsplus/ui/ConversationFragment.java
@@ -8,6 +8,7 @@ import android.content.ActivityNotFoundException;
 import android.content.Context;
 import android.content.DialogInterface;
 import android.content.Intent;
+import android.content.IntentSender;
 import android.content.IntentSender.SendIntentException;
 import android.os.Bundle;
 import android.support.annotation.Nullable;
@@ -23,6 +24,8 @@ import android.view.View.OnClickListener;
 import android.view.ViewGroup;
 import android.view.inputmethod.EditorInfo;
 import android.view.inputmethod.InputMethodManager;
+import android.widget.AbsListView;
+import android.widget.AbsListView.OnScrollListener;
 import android.widget.AdapterView;
 import android.widget.AdapterView.AdapterContextMenuInfo;
 import android.widget.ImageButton;
@@ -43,6 +46,7 @@ import java.util.Collections;
 import java.util.List;
 
 import de.thedevstack.conversationsplus.ConversationsPlusPreferences;
+import de.thedevstack.conversationsplus.http.HttpDownloadConnection;
 import de.thedevstack.conversationsplus.ui.dialogs.MessageDetailsDialog;
 import de.thedevstack.conversationsplus.Config;
 import de.thedevstack.conversationsplus.R;
@@ -521,6 +525,7 @@ public class ConversationFragment extends Fragment implements EditMessage.Keyboa
 
 	private void populateContextMenu(ContextMenu menu) {
 		final Message m = this.selectedMessage;
+		final Transferable t = m.getTransferable();
 		if (m.getType() != Message.TYPE_STATUS) {
 			activity.getMenuInflater().inflate(R.menu.message_context, menu);
 			menu.setHeaderTitle(R.string.message_options);
@@ -532,19 +537,18 @@ public class ConversationFragment extends Fragment implements EditMessage.Keyboa
 			MenuItem downloadFile = menu.findItem(R.id.download_file);
 			MenuItem cancelTransmission = menu.findItem(R.id.cancel_transmission);
 			if ((m.getType() == Message.TYPE_TEXT || m.getType() == Message.TYPE_PRIVATE)
-					&& m.getTransferable() == null
+					&& t == null
 					&& !GeoHelper.isGeoUri(m.getBody())
 					&& m.treatAsDownloadable() != Message.Decision.MUST) {
 				copyText.setVisible(true);
 			}
-
 			if (m.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED) {
 				retryDecryption.setVisible(true);
 			}
 
 			if ((m.getType() != Message.TYPE_TEXT
 					&& m.getType() != Message.TYPE_PRIVATE
-					&& m.getTransferable() == null)
+					&& t == null)
 					|| (GeoHelper.isGeoUri(m.getBody()))) {
 				shareWith.setVisible(true);
 			}
@@ -553,15 +557,16 @@ public class ConversationFragment extends Fragment implements EditMessage.Keyboa
 			}
 			if (m.hasFileOnRemoteHost()
 					|| GeoHelper.isGeoUri(m.getBody())
-					|| m.treatAsDownloadable() == Message.Decision.MUST) {
+					|| m.treatAsDownloadable() == Message.Decision.MUST
+					|| (t != null && t instanceof HttpDownloadConnection)) {
 				copyUrl.setVisible(true);
 			}
-			if ((m.getType() == Message.TYPE_TEXT && m.getTransferable() == null && m.treatAsDownloadable() != Message.Decision.NEVER)
-					|| (m.isFileOrImage() && m.getTransferable() instanceof TransferablePlaceholder && m.hasFileOnRemoteHost())){
+			if ((m.getType() == Message.TYPE_TEXT && t == null && m.treatAsDownloadable() != Message.Decision.NEVER)
+					|| (m.isFileOrImage() && t instanceof TransferablePlaceholder && m.hasFileOnRemoteHost())){
 				downloadFile.setVisible(true);
 				downloadFile.setTitle(activity.getString(R.string.download_x_file,UIHelper.getFileDescriptionString(activity, m)));
 			}
-			if ((m.getTransferable() != null && !(m.getTransferable() instanceof TransferablePlaceholder))
+			if ((t != null && !(t instanceof TransferablePlaceholder))
 					|| (m.isFileOrImage() && (m.getStatus() == Message.STATUS_WAITING
 					|| m.getStatus() == Message.STATUS_OFFERED))) {
 				cancelTransmission.setVisible(true);
@@ -757,6 +762,17 @@ public class ConversationFragment extends Fragment implements EditMessage.Keyboa
         swipeLayout.setRefreshing(false);
 	}
 
+	private OnClickListener mEnableAccountListener = new OnClickListener() {
+		@Override
+		public void onClick(View v) {
+			final Account account = conversation == null ? null : conversation.getAccount();
+			if (account != null) {
+				account.setOption(Account.OPTION_DISABLED, false);
+				activity.xmppConnectionService.updateAccount(account);
+			}
+		}
+	};
+
 	private OnClickListener mUnblockClickListener = new OnClickListener() {
 		@Override
 		public void onClick(final View v) {
@@ -802,7 +818,9 @@ public class ConversationFragment extends Fragment implements EditMessage.Keyboa
 		final Account account = conversation.getAccount();
 		final Contact contact = conversation.getContact();
 		final int mode = conversation.getMode();
-		if (conversation.isBlocked()) {
+		if (account.getStatus() == Account.State.DISABLED) {
+			showSnackbar(R.string.this_account_is_disabled, R.string.enable, this.mEnableAccountListener);
+		} else if (conversation.isBlocked()) {
 			showSnackbar(R.string.contact_blocked, R.string.unblock, this.mUnblockClickListener);
 		} else if (!contact.showInRoster() && contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
 			showSnackbar(R.string.contact_added_you, R.string.add_back, this.mAddBackClickListener);
diff --git a/src/main/java/de/thedevstack/conversationsplus/ui/EditAccountActivity.java b/src/main/java/de/thedevstack/conversationsplus/ui/EditAccountActivity.java
index 7da2e889..ac06544a 100644
--- a/src/main/java/de/thedevstack/conversationsplus/ui/EditAccountActivity.java
+++ b/src/main/java/de/thedevstack/conversationsplus/ui/EditAccountActivity.java
@@ -501,7 +501,7 @@ public class EditAccountActivity extends XmppActivity implements OnAccountUpdate
 			clearDevices.setVisible(false);
 			mamPrefs.setVisible(false);
 		}
-		return true;
+		return super.onCreateOptionsMenu(menu);
 	}
 
 	@Override
@@ -621,6 +621,13 @@ public class EditAccountActivity extends XmppActivity implements OnAccountUpdate
 			this.mNamePort.setVisibility(mShowOptions ? View.VISIBLE : View.GONE);
 
 		}
+		mPassword.setEnabled(!Config.LOCK_SETTINGS);
+		mAccountJid.setEnabled(!Config.LOCK_SETTINGS);
+		mHostname.setEnabled(!Config.LOCK_SETTINGS);
+		mPort.setEnabled(!Config.LOCK_SETTINGS);
+		mPasswordConfirm.setEnabled(!Config.LOCK_SETTINGS);
+		mRegisterNew.setEnabled(!Config.LOCK_SETTINGS);
+
 		if (!mInitMode) {
 			this.mAvatar.setVisibility(View.VISIBLE);
 			this.mAvatar.setImageBitmap(AvatarService.getInstance().get(this.mAccount, getPixel(72)));
@@ -643,11 +650,12 @@ public class EditAccountActivity extends XmppActivity implements OnAccountUpdate
             } else {
                 detailsAccountJid.setText(this.mAccount.getJid().toBareJid().toString());
             }
+			Features features = this.mAccount.getXmppConnection().getFeatures();
 			this.mStats.setVisibility(View.VISIBLE);
-			this.mBatteryOptimizations.setVisibility(showBatteryOptimizationWarning() ? View.VISIBLE : View.GONE);
+			boolean showOptimizingWarning = !xmppConnectionService.getPushManagementService().available(mAccount) && isOptimizingBattery();
+			this.mBatteryOptimizations.setVisibility(showOptimizingWarning ? View.VISIBLE : View.GONE);
 			this.mSessionEst.setText(UIHelper.readableTimeDifferenceFull(this, this.mAccount.getXmppConnection()
 					.getLastSessionEstablished()));
-			Features features = this.mAccount.getXmppConnection().getFeatures();
 			if (features.rosterVersioning()) {
 				this.mServerInfoRosterVersion.setText(R.string.server_info_available);
 			} else {
diff --git a/src/main/java/de/thedevstack/conversationsplus/ui/ExportLogsPreference.java b/src/main/java/de/thedevstack/conversationsplus/ui/ExportLogsPreference.java
index eabb7518..54fe3910 100644
--- a/src/main/java/de/thedevstack/conversationsplus/ui/ExportLogsPreference.java
+++ b/src/main/java/de/thedevstack/conversationsplus/ui/ExportLogsPreference.java
@@ -1,7 +1,10 @@
 package de.thedevstack.conversationsplus.ui;
 
+import android.Manifest;
 import android.content.Context;
 import android.content.Intent;
+import android.content.pm.PackageManager;
+import android.os.Build;
 import android.preference.Preference;
 import android.util.AttributeSet;
 
@@ -22,6 +25,10 @@ public class ExportLogsPreference extends Preference {
     }
 
     protected void onClick() {
+		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M
+				&& getContext().checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
+			return;
+		}
 		final Intent startIntent = new Intent(getContext(), ExportLogsService.class);
 		getContext().startService(startIntent);
 		super.onClick();
diff --git a/src/main/java/de/thedevstack/conversationsplus/ui/ManageAccountActivity.java b/src/main/java/de/thedevstack/conversationsplus/ui/ManageAccountActivity.java
index 431111f5..e376b6b3 100644
--- a/src/main/java/de/thedevstack/conversationsplus/ui/ManageAccountActivity.java
+++ b/src/main/java/de/thedevstack/conversationsplus/ui/ManageAccountActivity.java
@@ -155,9 +155,9 @@ public class ManageAccountActivity extends XmppActivity implements OnAccountUpda
 			addAccount.setVisible(false);
 			addAccountWithCertificate.setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS);
 		} else {
-			addAccount.setVisible(!Config.SINGLE_ACCOUNT);
+			addAccount.setVisible(!Config.LOCK_SETTINGS);
 		}
-		addAccountWithCertificate.setVisible(!Config.SINGLE_ACCOUNT);
+		addAccountWithCertificate.setVisible(!Config.LOCK_SETTINGS);
 
 		if (!accountsLeftToEnable()) {
 			enableAll.setVisible(false);
diff --git a/src/main/java/de/thedevstack/conversationsplus/ui/PublishProfilePictureActivity.java b/src/main/java/de/thedevstack/conversationsplus/ui/PublishProfilePictureActivity.java
index 9b827861..6bf8c590 100644
--- a/src/main/java/de/thedevstack/conversationsplus/ui/PublishProfilePictureActivity.java
+++ b/src/main/java/de/thedevstack/conversationsplus/ui/PublishProfilePictureActivity.java
@@ -7,6 +7,8 @@ import android.graphics.Bitmap;
 import android.graphics.BitmapFactory;
 import android.net.Uri;
 import android.os.Bundle;
+import android.view.Menu;
+import android.view.MenuItem;
 import android.view.View;
 import android.view.View.OnClickListener;
 import android.view.View.OnLongClickListener;
@@ -32,7 +34,8 @@ import de.thedevstack.conversationsplus.xmpp.pep.Avatar;
 
 public class PublishProfilePictureActivity extends XmppActivity {
 
-	private static final int REQUEST_CHOOSE_FILE = 0xac23;
+	private static final int REQUEST_CHOOSE_FILE_AND_CROP = 0xac23;
+	private static final int REQUEST_CHOOSE_FILE = 0xac24;
 	private ImageView avatar;
 	private TextView accountTextView;
 	private TextView hintOrWarning;
@@ -137,7 +140,7 @@ public class PublishProfilePictureActivity extends XmppActivity {
 			@Override
 			public void onClick(View v) {
 				if (hasStoragePermission(REQUEST_CHOOSE_FILE)) {
-					chooseAvatar();
+					chooseAvatar(false);
 				}
 
 			}
@@ -145,20 +148,22 @@ public class PublishProfilePictureActivity extends XmppActivity {
 		this.defaultUri = PhoneHelper.getSefliUri(getApplicationContext());
 	}
 
-	private void chooseAvatar() {
+	private void chooseAvatar(boolean crop) {
 		Intent attachFileIntent = new Intent();
 		attachFileIntent.setType("image/*");
 		attachFileIntent.setAction(Intent.ACTION_GET_CONTENT);
 		Intent chooser = Intent.createChooser(attachFileIntent, getString(R.string.attach_file));
-		startActivityForResult(chooser, REQUEST_CHOOSE_FILE);
+		startActivityForResult(chooser, crop ? REQUEST_CHOOSE_FILE_AND_CROP : REQUEST_CHOOSE_FILE);
 	}
 
 	@Override
 	public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) {
 		if (grantResults.length > 0)
 			if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
-				if (requestCode == REQUEST_CHOOSE_FILE) {
-					chooseAvatar();
+				if (requestCode == REQUEST_CHOOSE_FILE_AND_CROP) {
+					chooseAvatar(true);
+				} else if (requestCode == REQUEST_CHOOSE_FILE) {
+					chooseAvatar(false);
 				}
 			} else {
 				Toast.makeText(this, R.string.no_storage_permission, Toast.LENGTH_SHORT).show();
@@ -166,11 +171,29 @@ public class PublishProfilePictureActivity extends XmppActivity {
 	}
 
 	@Override
+	public boolean onCreateOptionsMenu(Menu menu) {
+		getMenuInflater().inflate(R.menu.publish_avatar, menu);
+		return super.onCreateOptionsMenu(menu);
+	}
+
+	@Override
+	public boolean onOptionsItemSelected(final MenuItem item) {
+		if (item.getItemId() == R.id.action_crop_image) {
+			if (hasStoragePermission(REQUEST_CHOOSE_FILE_AND_CROP)) {
+				chooseAvatar(true);
+			}
+			return true;
+		} else {
+			return onOptionsItemSelected(item);
+		}
+	}
+
+	@Override
 	protected void onActivityResult(int requestCode, int resultCode, final Intent data) {
 		super.onActivityResult(requestCode, resultCode, data);
 		if (resultCode == RESULT_OK) {
 			switch (requestCode) {
-				case REQUEST_CHOOSE_FILE:
+				case REQUEST_CHOOSE_FILE_AND_CROP:
 					Uri source = data.getData();
 					String original = FileUtils.getPath(this, source);
 					if (original != null) {
@@ -180,9 +203,17 @@ public class PublishProfilePictureActivity extends XmppActivity {
 					final int size = getPixel(192);
 					Crop.of(source, destination).asSquare().withMaxSize(size, size).start(this);
 					break;
+				case REQUEST_CHOOSE_FILE:
+					this.avatarUri = data.getData();
+					if (xmppConnectionServiceBound) {
+						loadImageIntoPreview(this.avatarUri);
+					}
+					break;
 				case Crop.REQUEST_CROP:
 					this.avatarUri = Uri.fromFile(new File(getCacheDir(), "croppedAvatar"));
-					loadImageIntoPreview(this.avatarUri);
+					if (xmppConnectionServiceBound) {
+						loadImageIntoPreview(this.avatarUri);
+					}
 					break;
 			}
 		} else {
@@ -247,21 +278,10 @@ public class PublishProfilePictureActivity extends XmppActivity {
 		}
 	}
 
-	private Bitmap loadScaledBitmap(Uri uri, int reqSize) throws FileNotFoundException {
-		final BitmapFactory.Options options = new BitmapFactory.Options();
-		options.inJustDecodeBounds = true;
-		BitmapFactory.decodeStream(getContentResolver().openInputStream(uri), null, options);
-		int rotation = ExifHelper.getOrientation(getContentResolver().openInputStream(uri));
-		options.inSampleSize = ImageUtil.calcSampleSize(options, reqSize);
-		options.inJustDecodeBounds = false;
-		Bitmap bm = BitmapFactory.decodeStream(getContentResolver().openInputStream(uri), null, options);
-		return ImageUtil.rotate(bm,rotation);
-	}
-
 	protected void loadImageIntoPreview(Uri uri) {
 		Bitmap bm = null;
 		try {
-			bm = loadScaledBitmap(uri, getPixel(192));
+			bm = ImageUtil.cropCenterSquare(uri, getPixel(192));
 		} catch (Exception e) {
 			e.printStackTrace();
 		}
diff --git a/src/main/java/de/thedevstack/conversationsplus/ui/SettingsActivity.java b/src/main/java/de/thedevstack/conversationsplus/ui/SettingsActivity.java
index e8c9587b..ff7e11d1 100644
--- a/src/main/java/de/thedevstack/conversationsplus/ui/SettingsActivity.java
+++ b/src/main/java/de/thedevstack/conversationsplus/ui/SettingsActivity.java
@@ -3,23 +3,30 @@ package de.thedevstack.conversationsplus.ui;
 import android.app.AlertDialog;
 import android.app.FragmentManager;
 import android.content.DialogInterface;
+import android.content.Intent;
 import android.content.SharedPreferences;
 import android.content.SharedPreferences.OnSharedPreferenceChangeListener;
+import android.content.pm.PackageManager;
 import android.os.Build;
 import android.os.Bundle;
+import android.preference.CheckBoxPreference;
 import android.preference.ListPreference;
 import android.preference.Preference;
 import android.preference.PreferenceCategory;
 import android.preference.PreferenceManager;
+import android.preference.PreferenceScreen;
+import android.util.Log;
 import android.widget.Toast;
 
 import java.security.KeyStoreException;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collections;
+import java.util.List;
 import java.util.Locale;
 
 import de.duenndns.ssl.MemorizingTrustManager;
+import de.thedevstack.conversationsplus.services.ExportLogsService;
 import de.tzur.conversations.Settings;
 import de.thedevstack.conversationsplus.R;
 import de.thedevstack.conversationsplus.entities.Account;
@@ -28,6 +35,8 @@ import github.ankushsachdeva.emojicon.EmojiconHandler;
 
 public class SettingsActivity extends XmppActivity implements
 		OnSharedPreferenceChangeListener {
+
+	public static final int REQUEST_WRITE_LOGS = 0xbf8701;
 	private SettingsFragment mSettingsFragment;
 
 	@Override
@@ -62,34 +71,34 @@ public class SettingsActivity extends XmppActivity implements
 
 		final Preference removeCertsPreference = mSettingsFragment.findPreference("remove_trusted_certificates");
 		removeCertsPreference.setOnPreferenceClickListener(new Preference.OnPreferenceClickListener() {
-            @Override
-            public boolean onPreferenceClick(Preference preference) {
-                final MemorizingTrustManager mtm = xmppConnectionService.getMemorizingTrustManager();
-                final ArrayList<String> aliases = Collections.list(mtm.getCertificates());
-                if (aliases.size() == 0) {
-                    displayToast(getString(R.string.toast_no_trusted_certs));
-                    return true;
-                }
-                final ArrayList selectedItems = new ArrayList<Integer>();
-                final AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(SettingsActivity.this);
-                dialogBuilder.setTitle(getResources().getString(R.string.dialog_manage_certs_title));
-                dialogBuilder.setMultiChoiceItems(aliases.toArray(new CharSequence[aliases.size()]), null,
-                        new DialogInterface.OnMultiChoiceClickListener() {
-                            @Override
-                            public void onClick(DialogInterface dialog, int indexSelected,
-                                                boolean isChecked) {
-                                if (isChecked) {
-                                    selectedItems.add(indexSelected);
-                                } else if (selectedItems.contains(indexSelected)) {
-                                    selectedItems.remove(Integer.valueOf(indexSelected));
-                                }
-                                if (selectedItems.size() > 0)
-                                    ((AlertDialog) dialog).getButton(DialogInterface.BUTTON_POSITIVE).setEnabled(true);
-                                else {
-                                    ((AlertDialog) dialog).getButton(DialogInterface.BUTTON_POSITIVE).setEnabled(false);
-                                }
-                            }
-                        });
+			@Override
+			public boolean onPreferenceClick(Preference preference) {
+				final MemorizingTrustManager mtm = xmppConnectionService.getMemorizingTrustManager();
+				final ArrayList<String> aliases = Collections.list(mtm.getCertificates());
+				if (aliases.size() == 0) {
+					displayToast(getString(R.string.toast_no_trusted_certs));
+					return true;
+				}
+				final ArrayList selectedItems = new ArrayList<Integer>();
+				final AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(SettingsActivity.this);
+				dialogBuilder.setTitle(getResources().getString(R.string.dialog_manage_certs_title));
+				dialogBuilder.setMultiChoiceItems(aliases.toArray(new CharSequence[aliases.size()]), null,
+						new DialogInterface.OnMultiChoiceClickListener() {
+							@Override
+							public void onClick(DialogInterface dialog, int indexSelected,
+												boolean isChecked) {
+								if (isChecked) {
+									selectedItems.add(indexSelected);
+								} else if (selectedItems.contains(indexSelected)) {
+									selectedItems.remove(Integer.valueOf(indexSelected));
+								}
+								if (selectedItems.size() > 0)
+									((AlertDialog) dialog).getButton(DialogInterface.BUTTON_POSITIVE).setEnabled(true);
+								else {
+									((AlertDialog) dialog).getButton(DialogInterface.BUTTON_POSITIVE).setEnabled(false);
+								}
+							}
+						});
 
                 dialogBuilder.setPositiveButton(
                         getResources().getString(R.string.dialog_manage_certs_positivebutton), new DialogInterface.OnClickListener() {
@@ -137,8 +146,12 @@ public class SettingsActivity extends XmppActivity implements
 	}
 
 	@Override
-	public void onSharedPreferenceChanged(SharedPreferences preferences,
-			String name) {
+	public void onSharedPreferenceChanged(SharedPreferences preferences, String name) {
+		final List<String> resendPresence = Arrays.asList(
+				"confirm_messages_list",
+				"xa_on_silent_mode",
+				"away_when_screen_off",
+				"treat_vibrate_as_silent");
         // need to synchronize the settings class first
         Settings.synchronizeSettingsClassWithPreferences(preferences, name);
 		if (name.equals("resource")) {
@@ -159,9 +172,7 @@ public class SettingsActivity extends XmppActivity implements
 			}
 		} else if (name.equals("keep_foreground_service")) {
 			xmppConnectionService.toggleForegroundService();
-		} else if (name.equals("confirm_messages_list")
-				|| name.equals("xa_on_silent_mode")
-				|| name.equals("away_when_screen_off")) {
+		} else if (resendPresence.contains(name)) {
 			if (xmppConnectionServiceBound) {
 				if (name.equals("away_when_screen_off")) {
 					xmppConnectionService.toggleScreenEventReceiver();
@@ -177,6 +188,18 @@ public class SettingsActivity extends XmppActivity implements
 
 	}
 
+	@Override
+	public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
+		if (grantResults.length > 0)
+			if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
+				if (requestCode == REQUEST_WRITE_LOGS) {
+					getApplicationContext().startService(new Intent(getApplicationContext(), ExportLogsService.class));
+				}
+			} else {
+				Toast.makeText(this, R.string.no_storage_permission, Toast.LENGTH_SHORT).show();
+			}
+	}
+
 	private void displayToast(final String msg) {
 		runOnUiThread(new Runnable() {
 			@Override
diff --git a/src/main/java/de/thedevstack/conversationsplus/ui/StartConversationActivity.java b/src/main/java/de/thedevstack/conversationsplus/ui/StartConversationActivity.java
index f8c624be..d3086d66 100644
--- a/src/main/java/de/thedevstack/conversationsplus/ui/StartConversationActivity.java
+++ b/src/main/java/de/thedevstack/conversationsplus/ui/StartConversationActivity.java
@@ -534,7 +534,7 @@ public class StartConversationActivity extends XmppActivity implements OnRosterU
 			mSearchEditText.append(mInitialJid);
 			filter(mInitialJid);
 		}
-		return true;
+		return super.onCreateOptionsMenu(menu);
 	}
 
 	@Override
@@ -742,6 +742,7 @@ public class StartConversationActivity extends XmppActivity implements OnRosterU
 					Presence.Status s = p == null ? Presence.Status.OFFLINE : p.getStatus();
 					if (contact.showInRoster() && contact.match(needle)
 							&& (!this.mHideOfflineContacts
+							|| (needle != null && !needle.trim().isEmpty())
 							|| s.compareTo(Presence.Status.OFFLINE) < 0)) {
 						this.contacts.add(contact);
 					}
diff --git a/src/main/java/de/thedevstack/conversationsplus/ui/TrustKeysActivity.java b/src/main/java/de/thedevstack/conversationsplus/ui/TrustKeysActivity.java
index 167b207f..a3f674be 100644
--- a/src/main/java/de/thedevstack/conversationsplus/ui/TrustKeysActivity.java
+++ b/src/main/java/de/thedevstack/conversationsplus/ui/TrustKeysActivity.java
@@ -12,7 +12,9 @@ import android.widget.Toast;
 
 import org.whispersystems.libaxolotl.IdentityKey;
 
+import java.util.ArrayList;
 import java.util.HashMap;
+import java.util.List;
 import java.util.Map;
 import java.util.Set;
 
@@ -21,31 +23,29 @@ import de.thedevstack.conversationsplus.crypto.axolotl.AxolotlService;
 import de.thedevstack.conversationsplus.crypto.axolotl.XmppAxolotlSession;
 import de.thedevstack.conversationsplus.entities.Account;
 import de.thedevstack.conversationsplus.entities.Contact;
+import de.thedevstack.conversationsplus.entities.Conversation;
 import de.thedevstack.conversationsplus.xmpp.OnKeyStatusUpdated;
 import de.thedevstack.conversationsplus.xmpp.jid.InvalidJidException;
 import de.thedevstack.conversationsplus.xmpp.jid.Jid;
 
 public class TrustKeysActivity extends XmppActivity implements OnKeyStatusUpdated {
-	private Jid accountJid;
-	private Jid contactJid;
+	private List<Jid> contactJids;
 
-	private Contact contact;
 	private Account mAccount;
+	private Conversation mConversation;
 	private TextView keyErrorMessage;
 	private LinearLayout keyErrorMessageCard;
 	private TextView ownKeysTitle;
 	private LinearLayout ownKeys;
 	private LinearLayout ownKeysCard;
-	private TextView foreignKeysTitle;
 	private LinearLayout foreignKeys;
-	private LinearLayout foreignKeysCard;
 	private Button mSaveButton;
 	private Button mCancelButton;
 
 	private AxolotlService.FetchStatus lastFetchReport = AxolotlService.FetchStatus.SUCCESS;
 
 	private final Map<String, Boolean> ownKeysToTrust = new HashMap<>();
-	private final Map<String, Boolean> foreignKeysToTrust = new HashMap<>();
+	private final Map<Jid,Map<String, Boolean>> foreignKeysToTrust = new HashMap<>();
 
 	private final OnClickListener mSaveButtonListener = new OnClickListener() {
 		@Override
@@ -70,25 +70,16 @@ public class TrustKeysActivity extends XmppActivity implements OnKeyStatusUpdate
 	}
 
 	@Override
-	protected String getShareableUri() {
-		if (contact != null) {
-			return contact.getShareableUri();
-		} else {
-			return "";
-		}
-	}
-
-	@Override
 	protected void onCreate(final Bundle savedInstanceState) {
 		super.onCreate(savedInstanceState);
 		setContentView(R.layout.activity_trust_keys);
-		try {
-			this.accountJid = Jid.fromString(getIntent().getExtras().getString(EXTRA_ACCOUNT));
-		} catch (final InvalidJidException ignored) {
-		}
-		try {
-			this.contactJid = Jid.fromString(getIntent().getExtras().getString("contact"));
-		} catch (final InvalidJidException ignored) {
+		this.contactJids = new ArrayList<>();
+		for(String jid : getIntent().getStringArrayExtra("contacts")) {
+			try {
+				this.contactJids.add(Jid.fromString(jid));
+			} catch (InvalidJidException e) {
+				e.printStackTrace();
+			}
 		}
 
 		keyErrorMessageCard = (LinearLayout) findViewById(R.id.key_error_message_card);
@@ -96,9 +87,7 @@ public class TrustKeysActivity extends XmppActivity implements OnKeyStatusUpdate
 		ownKeysTitle = (TextView) findViewById(R.id.own_keys_title);
 		ownKeys = (LinearLayout) findViewById(R.id.own_keys_details);
 		ownKeysCard = (LinearLayout) findViewById(R.id.own_keys_card);
-		foreignKeysTitle = (TextView) findViewById(R.id.foreign_keys_title);
-		foreignKeys = (LinearLayout) findViewById(R.id.foreign_keys_details);
-		foreignKeysCard = (LinearLayout) findViewById(R.id.foreign_keys_card);
+		foreignKeys = (LinearLayout) findViewById(R.id.foreign_keys);
 		mCancelButton = (Button) findViewById(R.id.cancel_button);
 		mCancelButton.setOnClickListener(mCancelButtonListener);
 		mSaveButton = (Button) findViewById(R.id.save_button);
@@ -119,7 +108,7 @@ public class TrustKeysActivity extends XmppActivity implements OnKeyStatusUpdate
 		boolean hasForeignKeys = false;
 		for(final String fingerprint : ownKeysToTrust.keySet()) {
 			hasOwnKeys = true;
-			addFingerprintRowWithListeners(ownKeys, contact.getAccount(), fingerprint, false,
+			addFingerprintRowWithListeners(ownKeys, mAccount, fingerprint, false,
 					XmppAxolotlSession.Trust.fromBoolean(ownKeysToTrust.get(fingerprint)), false,
 					new CompoundButton.OnCheckedChangeListener() {
 						@Override
@@ -132,30 +121,44 @@ public class TrustKeysActivity extends XmppActivity implements OnKeyStatusUpdate
 					null
 			);
 		}
-		for(final String fingerprint : foreignKeysToTrust.keySet()) {
-			hasForeignKeys = true;
-			addFingerprintRowWithListeners(foreignKeys, contact.getAccount(), fingerprint, false,
-					XmppAxolotlSession.Trust.fromBoolean(foreignKeysToTrust.get(fingerprint)), false,
-					new CompoundButton.OnCheckedChangeListener() {
-						@Override
-						public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
-							foreignKeysToTrust.put(fingerprint, isChecked);
-							lockOrUnlockAsNeeded();
-						}
-					},
-					null,
-					null
-			);
-		}
 
-		if(hasOwnKeys) {
-			ownKeysTitle.setText(accountJid.toString());
-			ownKeysCard.setVisibility(View.VISIBLE);
-		}
-		if(hasForeignKeys) {
-			foreignKeysTitle.setText(contactJid.toString());
-			foreignKeysCard.setVisibility(View.VISIBLE);
+		synchronized (this.foreignKeysToTrust) {
+			for (Map.Entry<Jid, Map<String, Boolean>> entry : foreignKeysToTrust.entrySet()) {
+				hasForeignKeys = true;
+				final LinearLayout layout = (LinearLayout) getLayoutInflater().inflate(R.layout.keys_card, foreignKeys, false);
+				final Jid jid = entry.getKey();
+				final TextView header = (TextView) layout.findViewById(R.id.foreign_keys_title);
+				final LinearLayout keysContainer = (LinearLayout) layout.findViewById(R.id.foreign_keys_details);
+				final TextView informNoKeys = (TextView) layout.findViewById(R.id.no_keys_to_accept);
+				header.setText(jid.toString());
+				final Map<String, Boolean> fingerprints = entry.getValue();
+				for (final String fingerprint : fingerprints.keySet()) {
+					addFingerprintRowWithListeners(keysContainer, mAccount, fingerprint, false,
+							XmppAxolotlSession.Trust.fromBoolean(fingerprints.get(fingerprint)), false,
+							new CompoundButton.OnCheckedChangeListener() {
+								@Override
+								public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
+									fingerprints.put(fingerprint, isChecked);
+									lockOrUnlockAsNeeded();
+								}
+							},
+							null,
+							null
+					);
+				}
+				if (fingerprints.size() == 0) {
+					informNoKeys.setVisibility(View.VISIBLE);
+					informNoKeys.setText(getString(R.string.no_keys_just_confirm,mAccount.getRoster().getContact(jid).getDisplayName()));
+				} else {
+					informNoKeys.setVisibility(View.GONE);
+				}
+				foreignKeys.addView(layout);
+			}
 		}
+
+		ownKeysTitle.setText(mAccount.getJid().toBareJid().toString());
+		ownKeysCard.setVisibility(hasOwnKeys ? View.VISIBLE : View.GONE);
+		foreignKeys.setVisibility(hasForeignKeys ? View.VISIBLE : View.GONE);
 		if(hasPendingKeyFetches()) {
 			setFetching();
 			lock();
@@ -163,13 +166,15 @@ public class TrustKeysActivity extends XmppActivity implements OnKeyStatusUpdate
 			if (!hasForeignKeys && hasNoOtherTrustedKeys()) {
 				keyErrorMessageCard.setVisibility(View.VISIBLE);
 				if (lastFetchReport == AxolotlService.FetchStatus.ERROR
-						|| contact.getAccount().getAxolotlService().fetchMapHasErrors(contact)) {
+						|| mAccount.getAxolotlService().fetchMapHasErrors(contactJids)) {
 					keyErrorMessage.setText(R.string.error_no_keys_to_trust_server_error);
 				} else {
 					keyErrorMessage.setText(R.string.error_no_keys_to_trust);
 				}
-				ownKeys.removeAllViews(); ownKeysCard.setVisibility(View.GONE);
-				foreignKeys.removeAllViews(); foreignKeysCard.setVisibility(View.GONE);
+				ownKeys.removeAllViews();
+				ownKeysCard.setVisibility(View.GONE);
+				foreignKeys.removeAllViews();
+				foreignKeys.setVisibility(View.GONE);
 			}
 			lockOrUnlockAsNeeded();
 			setDone();
@@ -177,46 +182,58 @@ public class TrustKeysActivity extends XmppActivity implements OnKeyStatusUpdate
 	}
 
 	private boolean reloadFingerprints() {
+		List<Jid> acceptedTargets = mConversation == null ? new ArrayList<Jid>() : mConversation.getAcceptedCryptoTargets();
 		ownKeysToTrust.clear();
-		foreignKeysToTrust.clear();
 		AxolotlService service = this.mAccount.getAxolotlService();
 		Set<IdentityKey> ownKeysSet = service.getKeysWithTrust(XmppAxolotlSession.Trust.UNDECIDED);
-		Set<IdentityKey> foreignKeysSet = service.getKeysWithTrust(XmppAxolotlSession.Trust.UNDECIDED, contact);
-		if (hasNoOtherTrustedKeys() && ownKeysSet.size() == 0) {
-			foreignKeysSet.addAll(service.getKeysWithTrust(XmppAxolotlSession.Trust.UNTRUSTED, contact));
-		}
 		for(final IdentityKey identityKey : ownKeysSet) {
 			if(!ownKeysToTrust.containsKey(identityKey)) {
 				ownKeysToTrust.put(identityKey.getFingerprint().replaceAll("\\s", ""), false);
 			}
 		}
-		for(final IdentityKey identityKey : foreignKeysSet) {
-			if(!foreignKeysToTrust.containsKey(identityKey)) {
-				foreignKeysToTrust.put(identityKey.getFingerprint().replaceAll("\\s", ""), false);
+		synchronized (this.foreignKeysToTrust) {
+			foreignKeysToTrust.clear();
+			for (Jid jid : contactJids) {
+				Set<IdentityKey> foreignKeysSet = service.getKeysWithTrust(XmppAxolotlSession.Trust.UNDECIDED, jid);
+				if (hasNoOtherTrustedKeys(jid) && ownKeysSet.size() == 0) {
+					foreignKeysSet.addAll(service.getKeysWithTrust(XmppAxolotlSession.Trust.UNTRUSTED, jid));
+				}
+				Map<String, Boolean> foreignFingerprints = new HashMap<>();
+				for (final IdentityKey identityKey : foreignKeysSet) {
+					if (!foreignFingerprints.containsKey(identityKey)) {
+						foreignFingerprints.put(identityKey.getFingerprint().replaceAll("\\s", ""), false);
+					}
+				}
+				if (foreignFingerprints.size() > 0 || !acceptedTargets.contains(jid)) {
+					foreignKeysToTrust.put(jid, foreignFingerprints);
+				}
 			}
 		}
-		return ownKeysSet.size() + foreignKeysSet.size() > 0;
+		return ownKeysSet.size() + foreignKeysToTrust.size() > 0;
 	}
 
 	@Override
 	public void onBackendConnected() {
-		if ((accountJid != null) && (contactJid != null)) {
-			this.mAccount = xmppConnectionService.findAccountByJid(accountJid);
-			if (this.mAccount == null) {
-				return;
-			}
-			this.contact = this.mAccount.getRoster().getContact(contactJid);
+		Intent intent = getIntent();
+		this.mAccount = extractAccount(intent);
+		if (this.mAccount != null && intent != null) {
+			String uuid = intent.getStringExtra("conversation");
+			this.mConversation = xmppConnectionService.findConversationByUuid(uuid);
 			reloadFingerprints();
 			populateView();
 		}
 	}
 
 	private boolean hasNoOtherTrustedKeys() {
+		return mAccount == null || mAccount.getAxolotlService().anyTargetHasNoTrustedKeys(contactJids);
+	}
+
+	private boolean hasNoOtherTrustedKeys(Jid contact) {
 		return mAccount == null || mAccount.getAxolotlService().getNumTrustedKeys(contact) == 0;
 	}
 
 	private boolean hasPendingKeyFetches() {
-		return mAccount != null && contact != null && mAccount.getAxolotlService().hasPendingKeyFetches(mAccount,contact);
+		return mAccount != null && mAccount.getAxolotlService().hasPendingKeyFetches(mAccount, contactJids);
 	}
 
 
@@ -262,14 +279,28 @@ public class TrustKeysActivity extends XmppActivity implements OnKeyStatusUpdate
 
 	private void commitTrusts() {
 		for(final String fingerprint :ownKeysToTrust.keySet()) {
-			contact.getAccount().getAxolotlService().setFingerprintTrust(
+			mAccount.getAxolotlService().setFingerprintTrust(
 					fingerprint,
 					XmppAxolotlSession.Trust.fromBoolean(ownKeysToTrust.get(fingerprint)));
 		}
-		for(final String fingerprint:foreignKeysToTrust.keySet()) {
-			contact.getAccount().getAxolotlService().setFingerprintTrust(
-					fingerprint,
-					XmppAxolotlSession.Trust.fromBoolean(foreignKeysToTrust.get(fingerprint)));
+		List<Jid> acceptedTargets = mConversation == null ? new ArrayList<Jid>() : mConversation.getAcceptedCryptoTargets();
+		synchronized (this.foreignKeysToTrust) {
+			for (Map.Entry<Jid, Map<String, Boolean>> entry : foreignKeysToTrust.entrySet()) {
+				Jid jid = entry.getKey();
+				Map<String, Boolean> value = entry.getValue();
+				if (!acceptedTargets.contains(jid)) {
+					acceptedTargets.add(jid);
+				}
+				for (final String fingerprint : value.keySet()) {
+					mAccount.getAxolotlService().setFingerprintTrust(
+							fingerprint,
+							XmppAxolotlSession.Trust.fromBoolean(value.get(fingerprint)));
+				}
+			}
+		}
+		if (mConversation != null && mConversation.getMode() == Conversation.MODE_MULTI) {
+			mConversation.setAcceptedCryptoTargets(acceptedTargets);
+			xmppConnectionService.updateConversation(mConversation);
 		}
 	}
 
@@ -284,11 +315,17 @@ public class TrustKeysActivity extends XmppActivity implements OnKeyStatusUpdate
 	}
 
 	private void lockOrUnlockAsNeeded() {
-		if (hasNoOtherTrustedKeys() && !foreignKeysToTrust.values().contains(true)){
-			lock();
-		} else {
-			unlock();
+		synchronized (this.foreignKeysToTrust) {
+			for (Jid jid : contactJids) {
+				Map<String, Boolean> fingerprints = foreignKeysToTrust.get(jid);
+				if (hasNoOtherTrustedKeys(jid) && (fingerprints == null || !fingerprints.values().contains(true))) {
+					lock();
+					return;
+				}
+			}
 		}
+		unlock();
+
 	}
 
 	private void setDone() {
diff --git a/src/main/java/de/thedevstack/conversationsplus/ui/XmppActivity.java b/src/main/java/de/thedevstack/conversationsplus/ui/XmppActivity.java
index 1fbb3b1d..cf029ee3 100644
--- a/src/main/java/de/thedevstack/conversationsplus/ui/XmppActivity.java
+++ b/src/main/java/de/thedevstack/conversationsplus/ui/XmppActivity.java
@@ -41,6 +41,7 @@ import android.os.SystemClock;
 import android.preference.PreferenceManager;
 import android.text.InputType;
 import android.util.DisplayMetrics;
+import android.view.Menu;
 import android.view.MenuItem;
 import android.view.View;
 import android.view.inputmethod.InputMethodManager;
@@ -378,7 +379,20 @@ public abstract class XmppActivity extends Activity {
 		}
 	}
 
-	protected boolean showBatteryOptimizationWarning() {
+	@Override
+	public boolean onCreateOptionsMenu(Menu menu) {
+		final MenuItem menuSettings = menu.findItem(R.id.action_settings);
+		final MenuItem menuManageAccounts = menu.findItem(R.id.action_accounts);
+		if (menuSettings != null) {
+			menuSettings.setVisible(!Config.LOCK_SETTINGS);
+		}
+		if (menuManageAccounts != null) {
+			menuManageAccounts.setVisible(!Config.LOCK_SETTINGS);
+		}
+		return super.onCreateOptionsMenu(menu);
+	}
+
+	protected boolean isOptimizingBattery() {
 		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
 			PowerManager pm = (PowerManager) getSystemService(POWER_SERVICE);
 			return !pm.isIgnoringBatteryOptimizations(getPackageName());
@@ -786,7 +800,7 @@ public abstract class XmppActivity extends Activity {
 				+ "\n\n" + CryptoHelper.prettifyFingerprint(fingerprint.substring(2))
 				+ "\n\n" + getString(R.string.purge_key_desc_part2));
 		builder.setNegativeButton(getString(R.string.cancel), null);
-		builder.setPositiveButton(getString(R.string.accept),
+		builder.setPositiveButton(getString(R.string.purge_key),
 				new DialogInterface.OnClickListener() {
 					@Override
 					public void onClick(DialogInterface dialog, int which) {
diff --git a/src/main/java/de/thedevstack/conversationsplus/ui/adapter/MessageAdapter.java b/src/main/java/de/thedevstack/conversationsplus/ui/adapter/MessageAdapter.java
index 6a141f11..79f3412d 100644
--- a/src/main/java/de/thedevstack/conversationsplus/ui/adapter/MessageAdapter.java
+++ b/src/main/java/de/thedevstack/conversationsplus/ui/adapter/MessageAdapter.java
@@ -17,6 +17,7 @@ import android.text.Spanned;
 import android.text.style.ForegroundColorSpan;
 import android.text.style.RelativeSizeSpan;
 import android.text.style.StyleSpan;
+import android.text.util.Linkify;
 import android.util.DisplayMetrics;
 import android.util.Patterns;
 import android.view.View;
@@ -31,9 +32,11 @@ import android.widget.TextView;
 import android.widget.Toast;
 
 import java.lang.ref.WeakReference;
+import java.net.URL;
 import java.util.List;
 import java.util.concurrent.RejectedExecutionException;
 import java.util.regex.Matcher;
+import java.util.regex.Pattern;
 
 import de.thedevstack.conversationsplus.ConversationsPlusPreferences;
 import de.thedevstack.conversationsplus.R;
@@ -57,6 +60,11 @@ public class MessageAdapter extends ArrayAdapter<Message> {
 	private static final int RECEIVED = 1;
 	private static final int STATUS = 2;
 	private static final int NULL = 3;
+	private static final Pattern XMPP_PATTERN = Pattern
+			.compile("xmpp\\:(?:(?:["
+					+ Patterns.GOOD_IRI_CHAR
+					+ "\\;\\/\\?\\@\\&\\=\\#\\~\\-\\.\\+\\!\\*\\'\\(\\)\\,\\_])"
+					+ "|(?:\\%[a-fA-F0-9]{2}))+");
 
 	private ConversationActivity activity;
 
@@ -322,12 +330,40 @@ public class MessageAdapter extends ArrayAdapter<Message> {
 				}
 				viewHolder.messageBody.setText(span);
 			}
-			int urlCount = 0;
-			Matcher matcher = Patterns.WEB_URL.matcher(body);
-			while (matcher.find()) {
-				urlCount++;
+			int patternMatchCount = 0;
+			int oldAutoLinkMask = viewHolder.messageBody.getAutoLinkMask();
+			Matcher matcher = null;
+
+			// first check if we have a match on XMPP_PATTERN so we do not have to check for EMAIL_ADDRESSES
+			matcher = XMPP_PATTERN.matcher(body);
+			if ((Linkify.EMAIL_ADDRESSES & oldAutoLinkMask) != 0 && matcher.find()) {
+				oldAutoLinkMask -= Linkify.EMAIL_ADDRESSES;
 			}
-			viewHolder.messageBody.setTextIsSelectable(urlCount <= 1);
+
+			// count matches for all patterns
+			if ((Linkify.WEB_URLS & oldAutoLinkMask) != 0) {
+				matcher = Patterns.WEB_URL.matcher(body);
+				while (matcher.find()) {
+					patternMatchCount++;
+				}
+			}
+			if ((Linkify.EMAIL_ADDRESSES & oldAutoLinkMask) != 0) {
+				matcher = Patterns.EMAIL_ADDRESS.matcher(body);
+				while (matcher.find()) {
+					patternMatchCount++;
+				}
+			}
+			if ((Linkify.PHONE_NUMBERS & oldAutoLinkMask) != 0) {
+				matcher = Patterns.PHONE.matcher(body);
+				while (matcher.find()) {
+					patternMatchCount++;
+				}
+			}
+
+			viewHolder.messageBody.setTextIsSelectable(patternMatchCount <= 1);
+			viewHolder.messageBody.setAutoLinkMask(0);
+			Linkify.addLinks(viewHolder.messageBody, XMPP_PATTERN, "xmpp");
+			viewHolder.messageBody.setAutoLinkMask(oldAutoLinkMask);
 		} else {
 			viewHolder.messageBody.setText("");
 			viewHolder.messageBody.setTextIsSelectable(false);
@@ -574,7 +610,19 @@ public class MessageAdapter extends ArrayAdapter<Message> {
 			if (GeoHelper.isGeoUri(message.getBody())) {
 				displayLocationMessage(viewHolder,message);
 			} else if (message.treatAsDownloadable() == Message.Decision.MUST) {
-				displayDownloadableMessage(viewHolder, message, activity.getString(R.string.check_x_filesize, UIHelper.getFileDescriptionString(activity, message)));
+				try {
+					URL url = new URL(message.getBody());
+					displayDownloadableMessage(viewHolder,
+							message,
+							activity.getString(R.string.check_x_filesize_on_host,
+									UIHelper.getFileDescriptionString(activity, message),
+									url.getHost()));
+				} catch (Exception e) {
+					displayDownloadableMessage(viewHolder,
+							message,
+							activity.getString(R.string.check_x_filesize,
+									UIHelper.getFileDescriptionString(activity, message)));
+				}
 			} else {
 				displayTextMessage(viewHolder, message, darkBackground);
 			}