introduced build-time paranoia mode that disables unencrypted chats and forces TOR

src/main/java/eu/siacs/conversations/Config.java

@@ -17,7 +17,7 @@ public final class Config {
 	public static final boolean DISALLOW_REGISTRATION_IN_UI = false; //hide the register checkbox
 	public static final boolean HIDE_PGP_IN_UI = false; //some more consumer focused clients might want to disable OpenPGP
 	public static final boolean PARANOID_MODE = false; //disables ability to send unencrypted 1-on-1 chats and forces TOR
-	public static final boolean SHOW_CONNECTED_ACCOUNTS = true; //show number of connected accounts in foreground notification
+	public static final boolean SHOW_CONNECTED_ACCOUNTS = false; //show number of connected accounts in foreground notification
 
 	public static final boolean LEGACY_NAMESPACE_HTTP_UPLOAD = false;
 

src/main/java/eu/siacs/conversations/entities/Conversation.java

@@ -612,9 +612,16 @@ public class Conversation extends AbstractEntity implements Blockable {
 		if (next == -1) {
 			int outgoing = this.getMostRecentlyUsedOutgoingEncryption();
 			if (outgoing == Message.ENCRYPTION_NONE) {
-				return this.getMostRecentlyUsedIncomingEncryption();
+				next = this.getMostRecentlyUsedIncomingEncryption();
 			} else {
-				return outgoing;
+				next = outgoing;
+			}
+		}
+		if (Config.PARANOID_MODE && mode == MODE_SINGLE && next <= 0) {
+			if (getAccount().getAxolotlService().isContactAxolotlCapable(getContact())) {
+				return Message.ENCRYPTION_AXOLOTL;
+			} else {
+				return Message.ENCRYPTION_OTR;
 			}
 		}
 		return next;

src/main/java/eu/siacs/conversations/services/XmppConnectionService.java

@@ -2550,7 +2550,7 @@ public class XmppConnectionService extends Service implements OnPhoneContactsLoa
 	}
 
 	public boolean useTorToConnect() {
-		return getPreferences().getBoolean("use_tor", false);
+		return Config.PARANOID_MODE || getPreferences().getBoolean("use_tor", false);
 	}
 
 	public int unreadCount() {

src/main/java/eu/siacs/conversations/ui/ConversationActivity.java

@@ -815,6 +815,7 @@ public class ConversationActivity extends XmppActivity
 			MenuItem pgp = popup.getMenu().findItem(R.id.encryption_choice_pgp);
 			MenuItem axolotl = popup.getMenu().findItem(R.id.encryption_choice_axolotl);
 			pgp.setVisible(!Config.HIDE_PGP_IN_UI);
+			none.setVisible(!Config.PARANOID_MODE);
 			if (conversation.getMode() == Conversation.MODE_MULTI) {
 				otr.setVisible(false);
 				axolotl.setVisible(false);

src/main/java/eu/siacs/conversations/ui/SettingsActivity.java

@@ -9,7 +9,10 @@ import android.os.Build;
 import android.os.Bundle;
 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;
@@ -19,6 +22,7 @@ import java.util.Collections;
 import java.util.Locale;
 
 import de.duenndns.ssl.MemorizingTrustManager;
+import eu.siacs.conversations.Config;
 import eu.siacs.conversations.R;
 import eu.siacs.conversations.entities.Account;
 import eu.siacs.conversations.xmpp.XmppConnection;
@@ -57,6 +61,14 @@ public class SettingsActivity extends XmppActivity implements
 			}
 		}
 
+		if (Config.PARANOID_MODE) {
+			PreferenceCategory connectionOptions = (PreferenceCategory) mSettingsFragment.findPreference("connection_options");
+			PreferenceScreen expert = (PreferenceScreen) mSettingsFragment.findPreference("expert");
+			if (connectionOptions != null) {
+				expert.removePreference(connectionOptions);
+			}
+		}
+
 		final Preference removeCertsPreference = mSettingsFragment.findPreference("remove_trusted_certificates");
 		removeCertsPreference.setOnPreferenceClickListener(new Preference.OnPreferenceClickListener() {
 			@Override

src/main/res/xml/preferences.xml

@@ -147,7 +147,9 @@
                     android:summary="@string/pref_remove_trusted_certificates_summary"
                     android:title="@string/pref_remove_trusted_certificates_title"/>
             </PreferenceCategory>
-            <PreferenceCategory android:title="@string/pref_connection_options">
+            <PreferenceCategory
+                android:title="@string/pref_connection_options"
+                android:key="connection_options">
                 <CheckBoxPreference
                     android:defaultValue="false"
                     android:key="use_tor"