Bundle tor (#339)

* tor started * tor works * tor code * improve manager * works * move tor icon * werks * arti works * arti works * arti works with reconnect * delay fix * refactor
2026-07-24 20:45:19 +00:00 · 2025-08-29 14:37:35 +02:00
parent 7f4bd96739
commit 686e2e78ec
12 changed files with 551 additions and 16 deletions
@@ -95,6 +95,9 @@ dependencies {
    // WebSocket
    implementation(libs.okhttp)

+    // Arti (Tor in Rust) Android bridge - use published AAR with native libs
+    implementation("info.guardianproject:arti-mobile-ex:1.2.3")
+
    // Google Play Services Location
    implementation(libs.gms.location)

@@ -3,6 +3,7 @@ package com.bitchat.android
 import android.app.Application
 import com.bitchat.android.nostr.RelayDirectory
 import com.bitchat.android.ui.theme.ThemePreferenceManager
+import com.bitchat.android.net.TorManager

 /**
 * Main application class for bitchat Android
@@ -12,6 +13,9 @@ class BitchatApplication : Application() {
    override fun onCreate() {
        super.onCreate()
        
+        // Initialize Tor first so any early network goes over Tor
+        try { TorManager.init(this) } catch (_: Exception) { }
+
        // Initialize relay directory (loads assets/nostr_relays.csv)
        RelayDirectory.initialize(this)

@@ -27,5 +31,7 @@ class BitchatApplication : Application() {

        // Initialize theme preference
        ThemePreferenceManager.init(this)
+
+        // TorManager already initialized above
    }
 }
@@ -0,0 +1,53 @@
+package com.bitchat.android.net
+
+import okhttp3.OkHttpClient
+import java.net.InetSocketAddress
+import java.net.Proxy
+import java.util.concurrent.TimeUnit
+import java.util.concurrent.atomic.AtomicReference
+
+/**
+ * Centralized OkHttp provider to ensure all network traffic honors Tor settings.
+ */
+object OkHttpProvider {
+    private val httpClientRef = AtomicReference<OkHttpClient?>(null)
+    private val wsClientRef = AtomicReference<OkHttpClient?>(null)
+
+    fun reset() {
+        httpClientRef.set(null)
+        wsClientRef.set(null)
+    }
+
+    fun httpClient(): OkHttpClient {
+        httpClientRef.get()?.let { return it }
+        val client = baseBuilderForCurrentProxy()
+            .callTimeout(15, TimeUnit.SECONDS)
+            .connectTimeout(10, TimeUnit.SECONDS)
+            .readTimeout(15, TimeUnit.SECONDS)
+            .build()
+        httpClientRef.set(client)
+        return client
+    }
+
+    fun webSocketClient(): OkHttpClient {
+        wsClientRef.get()?.let { return it }
+        val client = baseBuilderForCurrentProxy()
+            .connectTimeout(10, TimeUnit.SECONDS)
+            .readTimeout(0, TimeUnit.SECONDS)
+            .writeTimeout(10, TimeUnit.SECONDS)
+            .build()
+        wsClientRef.set(client)
+        return client
+    }
+
+    private fun baseBuilderForCurrentProxy(): OkHttpClient.Builder {
+        val builder = OkHttpClient.Builder()
+        val socks: InetSocketAddress? = TorManager.currentSocksAddress()
+        if (socks != null && TorManager.isProxyEnabled()) {
+            val proxy = Proxy(Proxy.Type.SOCKS, socks)
+            builder.proxy(proxy)
+        }
+        return builder
+    }
+}
+
@@ -0,0 +1,318 @@
+package com.bitchat.android.net
+
+import android.app.Application
+import android.util.Log
+import info.guardianproject.arti.ArtiLogListener
+import info.guardianproject.arti.ArtiProxy
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.SupervisorJob
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.asStateFlow
+import kotlinx.coroutines.flow.first
+import kotlinx.coroutines.sync.Mutex
+import kotlinx.coroutines.sync.withLock
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.Job
+
+import java.net.InetSocketAddress
+import java.util.concurrent.atomic.AtomicReference
+import java.util.concurrent.atomic.AtomicLong
+
+/**
+ * Manages embedded Tor lifecycle & provides SOCKS proxy address.
+ * Uses Arti (Tor in Rust) for improved security and reliability.
+ */
+object TorManager {
+    private const val TAG = "TorManager"
+    private const val DEFAULT_SOCKS_PORT = 9060
+    private const val RESTART_DELAY_MS = 2000L // 2 seconds between stop/start
+    private const val INACTIVITY_TIMEOUT_MS = 5000L // 5 seconds of no activity before restart
+    private const val MAX_RETRY_ATTEMPTS = 5
+
+    private val appScope = CoroutineScope(Dispatchers.IO + SupervisorJob())
+
+    @Volatile private var initialized = false
+    @Volatile private var socksAddr: InetSocketAddress? = null
+    private val artiProxyRef = AtomicReference<ArtiProxy?>(null)
+    @Volatile private var lastMode: TorMode = TorMode.OFF
+    private val applyMutex = Mutex()
+    @Volatile private var desiredMode: TorMode = TorMode.OFF
+    @Volatile private var currentSocksPort: Int = DEFAULT_SOCKS_PORT
+    @Volatile private var nextSocksPort: Int = DEFAULT_SOCKS_PORT
+    @Volatile private var lastLogTime = AtomicLong(0L)
+    @Volatile private var retryAttempts = 0
+    private var inactivityJob: Job? = null
+    private var retryJob: Job? = null
+    private var currentApplication: Application? = null
+
+    private enum class LifecycleState { STOPPED, STARTING, RUNNING, STOPPING }
+    @Volatile private var lifecycleState: LifecycleState = LifecycleState.STOPPED
+
+    data class TorStatus(
+        val mode: TorMode = TorMode.OFF,
+        val running: Boolean = false,
+        val bootstrapPercent: Int = 0,
+        val lastLogLine: String = ""
+    )
+
+    private val _status = MutableStateFlow(TorStatus())
+    val statusFlow: StateFlow<TorStatus> = _status.asStateFlow()
+
+    fun isProxyEnabled(): Boolean {
+        val s = _status.value
+        return s.mode != TorMode.OFF && s.running && s.bootstrapPercent >= 100 && socksAddr != null
+    }
+
+    fun init(application: Application) {
+        if (initialized) return
+        synchronized(this) {
+            if (initialized) return
+            initialized = true
+            currentApplication = application
+            TorPreferenceManager.init(application)
+
+            // Apply saved mode at startup
+            appScope.launch {
+                applyMode(application, TorPreferenceManager.get(application))
+            }
+
+            // Observe changes
+            appScope.launch {
+                TorPreferenceManager.modeFlow.collect { mode ->
+                    applyMode(application, mode)
+                }
+            }
+        }
+    }
+
+    fun currentSocksAddress(): InetSocketAddress? = socksAddr
+
+    suspend fun applyMode(application: Application, mode: TorMode) {
+        applyMutex.withLock {
+            try {
+                desiredMode = mode
+                lastMode = mode
+                val s = _status.value
+                if (mode == s.mode && mode != TorMode.OFF && (lifecycleState == LifecycleState.STARTING || lifecycleState == LifecycleState.RUNNING)) {
+                    Log.i(TAG, "applyMode: already in progress/running mode=$mode, state=$lifecycleState; skip")
+                    return
+                }
+                when (mode) {
+                    TorMode.OFF -> {
+                        Log.i(TAG, "applyMode: OFF -> stopping tor")
+                        lifecycleState = LifecycleState.STOPPING
+                        stopArti()
+                        socksAddr = null
+                        _status.value = _status.value.copy(mode = TorMode.OFF, running = false, bootstrapPercent = 0)
+                        nextSocksPort = DEFAULT_SOCKS_PORT
+                        lifecycleState = LifecycleState.STOPPED
+                        // Rebuild clients WITHOUT proxy and reconnect relays
+                        try {
+                            OkHttpProvider.reset()
+                            com.bitchat.android.nostr.NostrRelayManager.shared.resetAllConnections()
+                        } catch (_: Throwable) { }
+                    }
+                    TorMode.ON -> {
+                        Log.i(TAG, "applyMode: ON -> starting arti")
+                        nextSocksPort = if (currentSocksPort < DEFAULT_SOCKS_PORT) DEFAULT_SOCKS_PORT else currentSocksPort
+                        lifecycleState = LifecycleState.STARTING
+                        // For OFF->ON, no delay needed
+                        val needsDelay = s.mode == TorMode.ISOLATION
+                        startArti(application, isolation = false, useDelay = needsDelay)
+                        _status.value = _status.value.copy(mode = TorMode.ON)
+                        // Defer enabling proxy until bootstrap completes
+                        appScope.launch {
+                            waitUntilBootstrapped()
+                            if (_status.value.running && desiredMode == TorMode.ON) {
+                                socksAddr = InetSocketAddress("127.0.0.1", currentSocksPort)
+                                Log.i(TAG, "Tor ON: proxy set to ${socksAddr}")
+                                OkHttpProvider.reset()
+                                try { com.bitchat.android.nostr.NostrRelayManager.shared.resetAllConnections() } catch (_: Throwable) { }
+                            }
+                        }
+                    }
+                    TorMode.ISOLATION -> {
+                        Log.i(TAG, "applyMode: ISOLATION -> starting arti")
+                        nextSocksPort = if (currentSocksPort < DEFAULT_SOCKS_PORT) DEFAULT_SOCKS_PORT else currentSocksPort
+                        lifecycleState = LifecycleState.STARTING
+                        // For ON->ISOLATION, immediate status change and delay
+                        _status.value = _status.value.copy(running = false, bootstrapPercent = 0)
+                        val needsDelay = s.mode == TorMode.ON
+                        startArti(application, isolation = true, useDelay = needsDelay)
+                        _status.value = _status.value.copy(mode = TorMode.ISOLATION)
+                        appScope.launch {
+                            waitUntilBootstrapped()
+                            if (_status.value.running && desiredMode == TorMode.ISOLATION) {
+                                socksAddr = InetSocketAddress("127.0.0.1", currentSocksPort)
+                                Log.i(TAG, "Arti ISOLATION: proxy set to ${socksAddr}")
+                                OkHttpProvider.reset()
+                                try { com.bitchat.android.nostr.NostrRelayManager.shared.resetAllConnections() } catch (_: Throwable) { }
+                            }
+                        }
+                    }
+                }
+            } catch (e: Exception) {
+                Log.e(TAG, "Failed to apply Arti mode: ${e.message}")
+            }
+        }
+    }
+
+    private suspend fun startArti(application: Application, isolation: Boolean, useDelay: Boolean = false) {
+        try {
+            stopArtiInternal()
+
+            Log.i(TAG, "Starting Arti…")
+            if (useDelay) {
+                delay(RESTART_DELAY_MS)
+            }
+
+            // Determine port
+            val port = nextSocksPort
+            currentSocksPort = port
+
+            val logListener = ArtiLogListener { logLine ->
+                val text = logLine ?: return@ArtiLogListener
+                val s = text.toString()
+                Log.i(TAG, "arti: $s")
+                lastLogTime.set(System.currentTimeMillis())
+                _status.value = _status.value.copy(lastLogLine = s)
+                if (
+                    s.contains("Sufficiently bootstrapped", ignoreCase = true) ||
+                    s.contains("AMEx: state changed to Running", ignoreCase = true)
+                ) {
+                    _status.value = _status.value.copy(bootstrapPercent = 100)
+                    retryAttempts = 0 // Reset retry attempts on successful bootstrap
+                    startInactivityMonitoring()
+                }
+            }
+
+            val proxy = ArtiProxy.Builder(application)
+                .setSocksPort(port)
+                .setDnsPort(port + 1)
+                .setLogListener(logListener)
+                .build()
+
+            artiProxyRef.set(proxy)
+            proxy.start()
+            lastLogTime.set(System.currentTimeMillis())
+
+            _status.value = _status.value.copy(running = true, bootstrapPercent = 0)
+            lifecycleState = LifecycleState.RUNNING
+            startInactivityMonitoring()
+
+        } catch (e: Exception) {
+            Log.e(TAG, "Error starting Arti: ${e.message}")
+            scheduleRetry(application, isolation)
+        }
+    }
+
+    private fun stopArtiInternal() {
+        try {
+            val proxy = artiProxyRef.getAndSet(null)
+            if (proxy != null) {
+                Log.i(TAG, "Stopping Arti…")
+                try { proxy.stop() } catch (_: Throwable) {}
+            }
+            stopInactivityMonitoring()
+            stopRetryMonitoring()
+        } catch (e: Exception) {
+            Log.w(TAG, "Error stopping Arti: ${e.message}")
+        }
+    }
+
+    private fun stopArti() {
+        stopArtiInternal()
+        socksAddr = null
+        _status.value = _status.value.copy(running = false, bootstrapPercent = 0)
+    }
+
+    private suspend fun restartArti(application: Application, isolation: Boolean) {
+        Log.i(TAG, "Restarting Arti (keeping SOCKS proxy enabled)...")
+        stopArtiInternal()
+        delay(RESTART_DELAY_MS)
+        startArti(application, isolation, useDelay = false) // Already delayed above
+    }
+
+    private fun startInactivityMonitoring() {
+        inactivityJob?.cancel()
+        inactivityJob = appScope.launch {
+            while (true) {
+                delay(INACTIVITY_TIMEOUT_MS)
+                val currentTime = System.currentTimeMillis()
+                val lastActivity = lastLogTime.get()
+                val timeSinceLastActivity = currentTime - lastActivity
+                
+                if (timeSinceLastActivity > INACTIVITY_TIMEOUT_MS) {
+                    val currentMode = _status.value.mode
+                    if (currentMode == TorMode.ON || currentMode == TorMode.ISOLATION) {
+                        val bootstrapPercent = _status.value.bootstrapPercent
+                        if (bootstrapPercent < 100) {
+                            Log.w(TAG, "Inactivity detected (${timeSinceLastActivity}ms), restarting Arti")
+                            currentApplication?.let { app ->
+                                appScope.launch {
+                                    restartArti(app, currentMode == TorMode.ISOLATION)
+                                }
+                            }
+                            break
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    private fun stopInactivityMonitoring() {
+        inactivityJob?.cancel()
+        inactivityJob = null
+    }
+
+    private fun scheduleRetry(application: Application, isolation: Boolean) {
+        retryJob?.cancel()
+        if (retryAttempts < MAX_RETRY_ATTEMPTS) {
+            retryAttempts++
+            val delayMs = (1000L * (1 shl retryAttempts)).coerceAtMost(30000L) // Exponential backoff, max 30s
+            Log.w(TAG, "Scheduling Arti retry attempt $retryAttempts in ${delayMs}ms")
+            retryJob = appScope.launch {
+                delay(delayMs)
+                val currentMode = _status.value.mode
+                if (currentMode == TorMode.ON || currentMode == TorMode.ISOLATION) {
+                    Log.i(TAG, "Retrying Arti start (attempt $retryAttempts)")
+                    restartArti(application, currentMode == TorMode.ISOLATION)
+                }
+            }
+        } else {
+            Log.e(TAG, "Max retry attempts reached, giving up on Arti connection")
+        }
+    }
+
+    private fun stopRetryMonitoring() {
+        retryJob?.cancel()
+        retryJob = null
+    }
+
+    // Removed Tor resource installation: not needed for Arti
+
+    /**
+     * Build an execution command that works on Android 10+ where app data dirs are mounted noexec.
+     * We invoke the platform dynamic linker and pass the PIE binary path as its first arg.
+     */
+    // Removed exec command builder: not needed for Arti
+
+    private suspend fun waitUntilBootstrapped() {
+        val current = _status.value
+        if (!current.running) return
+        if (current.bootstrapPercent >= 100) return
+        // Suspend until we observe 100% at least once
+        while (true) {
+            val s = statusFlow.first { it.bootstrapPercent >= 100 || !it.running }
+            if (!s.running) return
+            if (s.bootstrapPercent >= 100) return
+        }
+    }
+
+    // Visible for instrumentation tests to validate installation
+    fun installResourcesForTest(application: Application): Boolean { return true }
+}
@@ -0,0 +1,8 @@
+package com.bitchat.android.net
+
+enum class TorMode {
+    OFF,
+    ON,
+    ISOLATION
+}
+
@@ -0,0 +1,33 @@
+package com.bitchat.android.net
+
+import android.content.Context
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.StateFlow
+
+object TorPreferenceManager {
+    private const val PREFS_NAME = "bitchat_settings"
+    private const val KEY_TOR_MODE = "tor_mode"
+
+    private val _modeFlow = MutableStateFlow(TorMode.OFF)
+    val modeFlow: StateFlow<TorMode> = _modeFlow
+
+    fun init(context: Context) {
+        val prefs = context.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE)
+        val saved = prefs.getString(KEY_TOR_MODE, TorMode.OFF.name)
+        val mode = runCatching { TorMode.valueOf(saved ?: TorMode.OFF.name) }.getOrDefault(TorMode.OFF)
+        _modeFlow.value = mode
+    }
+
+    fun set(context: Context, mode: TorMode) {
+        val prefs = context.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE)
+        prefs.edit().putString(KEY_TOR_MODE, mode.name).apply()
+        _modeFlow.value = mode
+    }
+
+    fun get(context: Context): TorMode {
+        val prefs = context.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE)
+        val saved = prefs.getString(KEY_TOR_MODE, TorMode.OFF.name)
+        return runCatching { TorMode.valueOf(saved ?: TorMode.OFF.name) }.getOrDefault(TorMode.OFF)
+    }
+}
+
@@ -113,12 +113,9 @@ class NostrRelayManager private constructor() {
    private var subscriptionValidationJob: Job? = null
    private val SUBSCRIPTION_VALIDATION_INTERVAL = 30000L // 30 seconds
    
-    // OkHttp client for WebSocket connections
-    private val httpClient = OkHttpClient.Builder()
-        .connectTimeout(10, TimeUnit.SECONDS)
-        .readTimeout(0, TimeUnit.SECONDS) // No read timeout for WebSocket
-        .writeTimeout(10, TimeUnit.SECONDS)
-        .build()
+    // OkHttp client for WebSocket connections (via provider to honor Tor)
+    private val httpClient: OkHttpClient
+        get() = com.bitchat.android.net.OkHttpProvider.webSocketClient()
    
    private val gson by lazy { NostrRequest.createGson() }
    
@@ -34,13 +34,8 @@ object RelayDirectory {
    private val ONE_DAY_MS = TimeUnit.DAYS.toMillis(1)

    private val ioScope = CoroutineScope(SupervisorJob() + Dispatchers.IO)
-    private val httpClient: OkHttpClient by lazy {
-        OkHttpClient.Builder()
-            .callTimeout(15, TimeUnit.SECONDS)
-            .connectTimeout(10, TimeUnit.SECONDS)
-            .readTimeout(15, TimeUnit.SECONDS)
-            .build()
-    }
+    private val httpClient: OkHttpClient
+        get() = com.bitchat.android.net.OkHttpProvider.httpClient()

    data class RelayInfo(
        val url: String,
@@ -306,4 +301,3 @@ object RelayDirectory {
    }
 }

-
@@ -194,6 +194,97 @@ fun AboutSheet(
                        }
                    }
                }
+
+                // Network (Tor) section
+                item {
+                    val ctx = LocalContext.current
+                    val torMode = remember { mutableStateOf(com.bitchat.android.net.TorPreferenceManager.get(ctx)) }
+                    val torStatus by com.bitchat.android.net.TorManager.statusFlow.collectAsState()
+                    Column(
+                        modifier = Modifier.fillMaxWidth(),
+                        verticalArrangement = Arrangement.spacedBy(8.dp)
+                    ) {
+                        Text(
+                            text = "network",
+                            fontSize = 12.sp,
+                            fontFamily = FontFamily.Monospace,
+                            fontWeight = FontWeight.Medium,
+                            color = colorScheme.onSurface.copy(alpha = 0.8f)
+                        )
+                        Row(horizontalArrangement = Arrangement.spacedBy(8.dp), verticalAlignment = Alignment.CenterVertically) {
+                            FilterChip(
+                                selected = torMode.value == com.bitchat.android.net.TorMode.OFF,
+                                onClick = {
+                                    torMode.value = com.bitchat.android.net.TorMode.OFF
+                                    com.bitchat.android.net.TorPreferenceManager.set(ctx, torMode.value)
+                                },
+                                label = { Text("tor off", fontFamily = FontFamily.Monospace) }
+                            )
+                            FilterChip(
+                                selected = torMode.value == com.bitchat.android.net.TorMode.ON,
+                                onClick = {
+                                    torMode.value = com.bitchat.android.net.TorMode.ON
+                                    com.bitchat.android.net.TorPreferenceManager.set(ctx, torMode.value)
+                                },
+                                label = { Text("tor on", fontFamily = FontFamily.Monospace) }
+                            )
+                            FilterChip(
+                                selected = torMode.value == com.bitchat.android.net.TorMode.ISOLATION,
+                                onClick = {
+                                    torMode.value = com.bitchat.android.net.TorMode.ISOLATION
+                                    com.bitchat.android.net.TorPreferenceManager.set(ctx, torMode.value)
+                                },
+                                label = { Text("isolation mode", fontFamily = FontFamily.Monospace) }
+                            )
+                            // Status indicator (red/orange/green) shown to the right of buttons
+                            val statusColor = when {
+                                torStatus.running && torStatus.bootstrapPercent < 100 -> Color(0xFFFF9500)
+                                torStatus.running && torStatus.bootstrapPercent >= 100 -> if (isDark) Color(0xFF32D74B) else Color(0xFF248A3D)
+                                else -> Color.Red
+                            }
+                            Surface(
+                                color = statusColor,
+                                shape = RoundedCornerShape(50)
+                            ) { Box(Modifier.size(10.dp)) }
+                        }
+                        Text(
+                            text = "route internet over tor. isolation uses separate circuits per relay.",
+                            fontSize = 10.sp,
+                            fontFamily = FontFamily.Monospace,
+                            color = colorScheme.onSurface.copy(alpha = 0.6f)
+                        )
+
+                        // Debug status (temporary)
+                        Surface(
+                            modifier = Modifier.fillMaxWidth(),
+                            color = colorScheme.surfaceVariant.copy(alpha = 0.25f),
+                            shape = RoundedCornerShape(8.dp)
+                        ) {
+                            Column(
+                                modifier = Modifier.padding(12.dp),
+                                verticalArrangement = Arrangement.spacedBy(6.dp)
+                            ) {
+                                Text(
+                                    text = "tor status: " +
+                                            (if (torStatus.running) "running" else "stopped") +
+                                            ", bootstrap=" + torStatus.bootstrapPercent + "%",
+                                    fontSize = 11.sp,
+                                    fontFamily = FontFamily.Monospace,
+                                    color = colorScheme.onSurface.copy(alpha = 0.75f)
+                                )
+                                val last = torStatus.lastLogLine
+                                if (last.isNotEmpty()) {
+                                    Text(
+                                        text = "last: " + last.take(160),
+                                        fontSize = 10.sp,
+                                        fontFamily = FontFamily.Monospace,
+                                        color = colorScheme.onSurface.copy(alpha = 0.6f)
+                                    )
+                                }
+                            }
+                        }
+                    }
+                }
                
                // Emergency warning
                item {
@@ -48,6 +48,27 @@ fun isFavoriteReactive(
    }
 }

+@Composable
+fun TorStatusIcon(
+    modifier: Modifier = Modifier
+) {
+    val torStatus by com.bitchat.android.net.TorManager.statusFlow.collectAsState()
+    
+    if (torStatus.mode != com.bitchat.android.net.TorMode.OFF) {
+        val cableColor = when {
+            torStatus.running && torStatus.bootstrapPercent < 100 -> Color(0xFFFF9500)
+            torStatus.running && torStatus.bootstrapPercent >= 100 -> Color(0xFF00C851)
+            else -> Color.Red
+        }
+        Icon(
+            imageVector = Icons.Outlined.Cable,
+            contentDescription = "Tor status",
+            modifier = modifier,
+            tint = cableColor
+        )
+    }
+}
+
@Composable
 fun NoiseSessionIcon(
    sessionState: String?,
@@ -539,9 +560,12 @@ private fun MainHeader(
        // Right section with location channels button and peer counter
        Row(
            verticalAlignment = Alignment.CenterVertically,
-            horizontalArrangement = Arrangement.spacedBy(10.dp)
+            horizontalArrangement = Arrangement.spacedBy(5.dp)
        ) {
            
+            // Tor status cable icon when Tor is enabled
+            TorStatusIcon(modifier = Modifier.size(15.dp))
+
            // Location channels button (matching iOS implementation)
            LocationChannelsButton(
                viewModel = viewModel,
@@ -36,6 +36,8 @@ nordic-ble = "2.6.1"

 # WebSocket
 okhttp = "4.12.0"
+tor-android-binary = "0.4.4.6"
+

 # Google Play Services
 gms-location = "21.3.0"
@@ -93,6 +95,9 @@ nordic-ble = { module = "no.nordicsemi.android:ble", version.ref = "nordic-ble"

 # WebSocket
 okhttp = { module = "com.squareup.okhttp3:okhttp", version.ref = "okhttp" }
+tor-android-binary = { module = "org.torproject:tor-android-binary", version.ref = "tor-android-binary" }
+
+# Tor (embed) intentionally not pinned yet; add once repo is chosen

 # Google Play Services
 gms-location = { module = "com.google.android.gms:play-services-location", version.ref = "gms-location" }
@@ -150,4 +155,4 @@ testing = [
 compose-testing = [
    "androidx-compose-ui-test-junit4",
    "androidx-compose-ui-test-manifest"
-] 
+] 
@@ -10,8 +10,11 @@ dependencyResolutionManagement {
    repositories {
        google()
        mavenCentral()
+        // Guardian Project raw GitHub Maven (hosts info.guardianproject:arti-mobile-ex)
+        maven { url = uri("https://raw.githubusercontent.com/guardianproject/gpmaven/master") }
    }
 }

 rootProject.name = "bitchat-android"
 include(":app")
+// Using published Arti AAR; local module not included