diff --git a/src/main.cpp b/src/main.cpp
index dc34921..8ef24fb 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -14,23 +14,118 @@
 // You should have received a copy of the GNU General Public License
 // along with this program.  If not, see <http://www.gnu.org/licenses/>.
 //
+#include <getopt.h>
 
 #include <csignal>
+#include <iostream>
 
 #include "VNCFlinger.h"
 
 using namespace android;
 
-static VNCFlinger* VNC;
+static sp<VNCFlinger> gVNC;
+
+static const char* const shortOpts = "4:6:p:s:vh";
+static const option longOpts[] = {
+    {"listen", 1, nullptr, '4'},
+    {"listen6", 1, nullptr, '6'},
+    {"port", 1, nullptr, 'p'},
+    {"password", 1, nullptr, 's'},
+    {"version", 0, nullptr, 'v'},
+    {"help", 0, nullptr, 'h'},
+};
 
 static void onSignal(int /* signal */) {
-    VNC->stop();
+    gVNC->stop();
+}
+
+static void printVersion() {
+    std::cout << "VNCFlinger-" << VNCFLINGER_VERSION << std::endl;
+    exit(0);
+}
+
+static void printHelp() {
+    std::cout << "Usage: vncflinger [OPTIONS]\n\n"
+              << "  -4 <addr>        IPv4 address to listen (default: localhost)\n"
+              << "  -6 <addr>        IPv6 address to listen (default: localhost)\n"
+              << "  -p <num>         Port to listen on (default: 5900)\n"
+              << "  -s <pass>        Store server password\n"
+              << "  -c               Clear server password\n"
+              << "  -v               Show server version\n"
+              << "  -h               Show help\n\n";
+    exit(1);
+}
+
+static void parseArgs(int argc, char** argv) {
+    String8 arg;
+
+    while (true) {
+        const auto opt = getopt_long(argc, argv, shortOpts, longOpts, nullptr);
+
+        if (opt < 0) {
+            break;
+        }
+
+        switch (opt) {
+            case 's':
+                arg = optarg;
+                if (gVNC->setPassword(arg) != OK) {
+                    std::cerr << "Failed to set password\n";
+                    exit(1);
+                }
+                exit(0);
+
+            case 'c':
+                if (gVNC->clearPassword() != OK) {
+                    std::cerr << "Failed to clear password\n";
+                    exit(1);
+                }
+                exit(0);
+
+            case '4':
+                arg = optarg;
+                if (gVNC->setListenAddress(arg, false) != OK) {
+                    std::cerr << "Failed to set IPv4 address\n";
+                    exit(1);
+                }
+                break;
+
+            case '6':
+                arg = optarg;
+                if (gVNC->setListenAddress(arg, true) != OK) {
+                    std::cerr << "Failed to set IPv6 address\n";
+                    exit(1);
+                }
+                break;
+
+            case 'p':
+                std::cerr << "port=" << optarg << std::endl;
+                if (gVNC->setPort(std::stoi(optarg)) != OK) {
+                    std::cerr << "Failed to set port\n";
+                    exit(1);
+                }
+                break;
+
+            case 'v':
+                printVersion();
+                break;
+
+            case 'h':
+            case '?':
+            default:
+                printHelp();
+                break;
+        }
+    }
 }
 
 int main(int argc, char** argv) {
     std::signal(SIGINT, onSignal);
     std::signal(SIGHUP, onSignal);
 
-    VNC = new VNCFlinger(argc, argv);
-    VNC->start();
+    gVNC = new VNCFlinger();
+
+    parseArgs(argc, argv);
+
+    gVNC->start();
 }