CW-519 Enable built-in Tor

.github/workflows/no_http_imports.yaml

@@ -0,0 +1,21 @@
+name: No http imports
+
+on: [pull_request]
+
+jobs:
+  PR_test_build:
+    runs-on: ubuntu-24.04
+
+    steps:
+      - uses: actions/checkout@v4
+      - name: Check for http package usage
+        if: github.event_name == 'pull_request'
+        run: |
+          GIT_GREP_OUT="$(git grep package:http | (grep .dart: || test $? = 1) | (grep -v proxy_wrapper.dart || test $? = 1) | (grep -v very_insecure_http_do_not_use || test $? = 1) || true)"
+          [[ "x$GIT_GREP_OUT" == "x" ]] && exit 0
+          echo "$GIT_GREP_OUT"
+          echo "There are .dart files which use http imports"
+          echo "Using http package breaks proxy integration"
+          echo "Please use ProxyWrapper.getHttpClient() from package:cw_core/utils/proxy_wrapper.dart"
+          exit 1
+

.github/workflows/no_print_in_dart.yaml

@@ -15,5 +15,5 @@ jobs:
           [[ "x$GIT_GREP_OUT" == "x" ]] && exit 0
           echo "$GIT_GREP_OUT"
           echo "There are .dart files which use print() statements"
-          echo "Please use printV from package: cw_core/utils/print_verbose.dart"
+          echo "Please use printV from package:cw_core/utils/print_verbose.dart"
           exit 1

cw_bitcoin/lib/electrum.dart

@@ -5,6 +5,8 @@ import 'dart:typed_data';
 import 'package:bitcoin_base/bitcoin_base.dart';
 import 'package:cw_bitcoin/bitcoin_amount_format.dart';
 import 'package:cw_core/utils/print_verbose.dart';
+import 'package:cw_core/utils/proxy_socket/abstract.dart';
+import 'package:cw_core/utils/proxy_wrapper.dart';
 import 'package:flutter/foundation.dart';
 import 'package:rxdart/rxdart.dart';
 
@@ -42,7 +44,7 @@ class ElectrumClient {
   static const aliveTimerDuration = Duration(seconds: 4);
 
   bool get isConnected => _isConnected;
-  Socket? socket;
+  ProxySocket? socket;
   void Function(ConnectionStatus)? onConnectionStatusChange;
   int _id;
   final Map<String, SocketTask> _tasks;
@@ -72,18 +74,11 @@ class ElectrumClient {
     } catch (_) {}
     socket = null;
 
+    final ssl = !(useSSL == false || (useSSL == null && uri.toString().contains("btc-electrum")));
     try {
-      if (useSSL == false || (useSSL == null && uri.toString().contains("btc-electrum"))) {
-        socket = await Socket.connect(host, port, timeout: connectionTimeout);
-      } else {
-        socket = await SecureSocket.connect(
-          host,
-          port,
-          timeout: connectionTimeout,
-          onBadCertificate: (_) => true,
-        );
-      }
+      socket = await ProxyWrapper().getSocksSocket(ssl, host, port, connectionTimeout: connectionTimeout);
     } catch (e) {
+      printV("connect: $e");
       if (e is HandshakeException) {
         useSSL = !(useSSL ?? false);
       }
@@ -105,7 +100,6 @@ class ElectrumClient {
 
     // use ping to determine actual connection status since we could've just not timed out yet:
     // _setConnectionStatus(ConnectionStatus.connected);
-
     socket!.listen(
       (Uint8List event) {
         try {

cw_bitcoin/lib/electrum_wallet.dart

@@ -4,6 +4,7 @@ import 'dart:io';
 import 'dart:isolate';
 
 import 'package:bitcoin_base/bitcoin_base.dart';
+import 'package:cw_core/utils/proxy_wrapper.dart';
 import 'package:cw_bitcoin/bitcoin_amount_format.dart';
 import 'package:cw_core/format_amount.dart';
 import 'package:cw_core/utils/print_verbose.dart';
@@ -49,7 +50,6 @@ import 'package:mobx/mobx.dart';
 import 'package:rxdart/subjects.dart';
 import 'package:sp_scanner/sp_scanner.dart';
 import 'package:hex/hex.dart';
-import 'package:http/http.dart' as http;
 
 part 'electrum_wallet.g.dart';
 
@@ -493,10 +493,9 @@ abstract class ElectrumWalletBase
   Future<void> updateFeeRates() async {
     if (await checkIfMempoolAPIIsEnabled() && type == WalletType.bitcoin) {
       try {
-        final response = await http
-            .get(Uri.parse("https://mempool.cakewallet.com/api/v1/fees/recommended"))
-            .timeout(Duration(seconds: 5));
-
+        final response = await ProxyWrapper()  
+            .get(clearnetUri: Uri.parse("https://mempool.cakewallet.com/api/v1/fees/recommended"))  
+            .timeout(Duration(seconds: 15));  
         final result = json.decode(response.body) as Map<String, dynamic>;
         final slowFee = (result['economyFee'] as num?)?.toInt() ?? 0;
         int mediumFee = (result['hourFee'] as num?)?.toInt() ?? 0;
@@ -1176,20 +1175,18 @@ abstract class ElectrumWalletBase
         }
       });
 
-      return PendingBitcoinTransaction(
-        transaction,
-        type,
-        electrumClient: electrumClient,
-        amount: estimatedTx.amount,
-        fee: estimatedTx.fee,
-        feeRate: feeRateInt.toString(),
-        network: network,
-        hasChange: estimatedTx.hasChange,
-        isSendAll: estimatedTx.isSendAll,
-        hasTaprootInputs: hasTaprootInputs,
-        utxos: estimatedTx.utxos,
-        publicKeys: estimatedTx.publicKeys
-      )..addListener((transaction) async {
+      return PendingBitcoinTransaction(transaction, type,
+          electrumClient: electrumClient,
+          amount: estimatedTx.amount,
+          fee: estimatedTx.fee,
+          feeRate: feeRateInt.toString(),
+          network: network,
+          hasChange: estimatedTx.hasChange,
+          isSendAll: estimatedTx.isSendAll,
+          hasTaprootInputs: hasTaprootInputs,
+          utxos: estimatedTx.utxos,
+          publicKeys: estimatedTx.publicKeys)
+        ..addListener((transaction) async {
           transactionHistory.addOne(transaction);
           if (estimatedTx.spendsSilentPayment) {
             transactionHistory.transactions.values.forEach((tx) {
@@ -1880,20 +1877,17 @@ abstract class ElectrumWalletBase
 
       if (height != null && height > 0 && await checkIfMempoolAPIIsEnabled()) {
         try {
-          final blockHash = await http.get(
-            Uri.parse(
-              "https://mempool.cakewallet.com/api/v1/block-height/$height",
-            ),
-          );
+          final blockHash = await ProxyWrapper()
+            .get(clearnetUri: Uri.parse("https://mempool.cakewallet.com/api/v1/block-height/$height"))  
+            .timeout(Duration(seconds: 15));
 
           if (blockHash.statusCode == 200 &&
               blockHash.body.isNotEmpty &&
               jsonDecode(blockHash.body) != null) {
-            final blockResponse = await http.get(
-              Uri.parse(
-                "https://mempool.cakewallet.com/api/v1/block/${blockHash.body}",
-              ),
-            );
+            final blockResponse = await ProxyWrapper()
+                .get(clearnetUri: Uri.parse("https://mempool.cakewallet.com/api/v1/block/${blockHash}"))
+                .timeout(Duration(seconds: 15));
+
             if (blockResponse.statusCode == 200 &&
                 blockResponse.body.isNotEmpty &&
                 jsonDecode(blockResponse.body)['timestamp'] != null) {

cw_bitcoin/lib/payjoin/payjoin_receive_worker.dart

@@ -8,11 +8,12 @@ import 'package:cw_bitcoin/payjoin/manager.dart';
 import 'package:cw_bitcoin/payjoin/payjoin_session_errors.dart';
 import 'package:cw_bitcoin/psbt/signer.dart';
 import 'package:cw_core/utils/print_verbose.dart';
-import 'package:http/http.dart' as http;
+import 'package:cw_core/utils/proxy_wrapper.dart';
 import 'package:payjoin_flutter/bitcoin_ffi.dart';
 import 'package:payjoin_flutter/common.dart';
 import 'package:payjoin_flutter/receive.dart';
 import 'package:payjoin_flutter/src/generated/frb_generated.dart' as pj;
+import 'package:http/http.dart' as very_insecure_http_do_not_use; // for errors
 
 enum PayjoinReceiverRequestTypes {
   processOriginalTx,
@@ -28,7 +29,7 @@ class PayjoinReceiverWorker {
   final pendingRequests = <String, Completer<dynamic>>{};
 
   PayjoinReceiverWorker._(this.sendPort);
-
+  static final client = ProxyWrapper().getHttpIOClient();
   static Future<void> run(List<Object> args) async {
     await pj.core.init();
 
@@ -42,11 +43,10 @@ class PayjoinReceiverWorker {
     receivePort.listen(worker.handleMessage);
 
     try {
-      final httpClient = http.Client();
       final receiver = Receiver.fromJson(json: receiverJson);
 
       final uncheckedProposal =
-          await worker.receiveUncheckedProposal(httpClient, receiver);
+          await worker.receiveUncheckedProposal(receiver);
 
       final originalTx = await uncheckedProposal.extractTxToScheduleBroadcast();
       sendPort.send({
@@ -57,14 +57,14 @@ class PayjoinReceiverWorker {
       final payjoinProposal = await worker.processPayjoinProposal(
         uncheckedProposal,
       );
-      final psbt = await worker.sendFinalProposal(httpClient, payjoinProposal);
+      final psbt = await worker.sendFinalProposal(payjoinProposal);
       sendPort.send({
         'type': PayjoinReceiverRequestTypes.proposalSent,
         'psbt': psbt,
       });
     } catch (e) {
       if (e is HttpException ||
-          (e is http.ClientException &&
+          (e is very_insecure_http_do_not_use.ClientException &&
               e.message.contains("Software caused connection abort"))) {
         sendPort.send(PayjoinSessionError.recoverable(e.toString()));
       } else {
@@ -98,16 +98,16 @@ class PayjoinReceiverWorker {
     return completer.future;
   }
 
-  Future<UncheckedProposal> receiveUncheckedProposal(
-      http.Client httpClient, Receiver session) async {
+  Future<UncheckedProposal> receiveUncheckedProposal(Receiver session) async {
     while (true) {
       printV("Polling for Proposal (${session.id()})");
       final extractReq = await session.extractReq(
-          ohttpRelay: PayjoinManager.randomOhttpRelayUrl());
+        ohttpRelay: await PayjoinManager.randomOhttpRelayUrl(),
+      );
       final request = extractReq.$1;
 
       final url = Uri.parse(request.url.asString());
-      final httpRequest = await httpClient.post(url,
+      final httpRequest = await client.post(url,
           headers: {'Content-Type': request.contentType}, body: request.body);
 
       final proposal = await session.processRes(
@@ -116,14 +116,14 @@ class PayjoinReceiverWorker {
     }
   }
 
-  Future<String> sendFinalProposal(
-      http.Client httpClient, PayjoinProposal finalProposal) async {
+  Future<String> sendFinalProposal(PayjoinProposal finalProposal) async {
     final req = await finalProposal.extractReq(
-        ohttpRelay: PayjoinManager.randomOhttpRelayUrl());
+      ohttpRelay: await PayjoinManager.randomOhttpRelayUrl(),
+    );
     final proposalReq = req.$1;
     final proposalCtx = req.$2;
 
-    final request = await httpClient.post(
+    final request = await client.post(
       Uri.parse(proposalReq.url.asString()),
       headers: {"Content-Type": proposalReq.contentType},
       body: proposalReq.body,