Add RelayTorrcGenerator

network/tor-local-network/src/main/java/bisq/tor/local_network/torrc/RelayTorrcGenerator.java

@@ -0,0 +1,57 @@
+/*
+ * This file is part of Bisq.
+ *
+ * Bisq is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or (at
+ * your option) any later version.
+ *
+ * Bisq 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 Affero General Public
+ * License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with Bisq. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package bisq.tor.local_network.torrc;
+
+import bisq.tor.local_network.DirectoryAuthority;
+
+import java.io.IOException;
+import java.nio.file.Files;
+import java.util.Set;
+
+public class RelayTorrcGenerator extends CommonTorrcGenerator {
+
+    private final Set<DirectoryAuthority> allDirAuthorities;
+
+    public RelayTorrcGenerator(DirectoryAuthority thisDirectoryAuthority,
+                               Set<DirectoryAuthority> allDirAuthorities) {
+        super(thisDirectoryAuthority);
+        this.allDirAuthorities = allDirAuthorities;
+    }
+
+    @Override
+    public void generate() throws IOException {
+        super.generate();
+        torrcStringBuilder
+                .append("ExitRelay 1\n")
+                .append("ExitPolicy accept 127.0.0.0/8:*\n")
+                .append("ExitPolicyRejectPrivate 0\n")
+                .append("ExitPolicy accept private:*\n")
+                .append("ExitPolicy accept *:*\n")
+                .append("ExitPolicy reject *:*\n");
+
+        allDirAuthorities.forEach(dirAuthority ->
+                torrcStringBuilder.append("DirAuthority ").append(dirAuthority.getNickname())
+                        .append(" orport=").append(dirAuthority.getOrPort())
+                        .append(" v3ident=").append(dirAuthority.getV3LongTermSigningKeyFingerprint())
+                        .append(" 127.0.0.1:").append(dirAuthority.getDirPort())
+                        .append(" ").append(dirAuthority.getTorKeyFingerprint())
+                        .append("\n"));
+
+        Files.writeString(thisDirectoryAuthority.getTorrcPath(), torrcStringBuilder.toString());
+    }
+}