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Merge #19991: net: Use alternative port for incoming Tor connections

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96571b3d4c doc: Update onion service target port numbers in tor.md (Hennadii Stepanov)
bb145c9050 net: Extend -bind config option with optional network type (Hennadii Stepanov)
92bd3c1da4 net, refactor: Move AddLocal call one level up (Hennadii Stepanov)
57f17e57c8 net: Pass onion service target to Tor controller (Hennadii Stepanov)
e3f07851f0 refactor: Rename TorController::target to m_tor_control_center (Hennadii Stepanov)
fdd3ae4d26 net, refactor: Refactor CBaseChainParams::RPCPort function (Hennadii Stepanov)
a5266d4546 net: Add alternative port for onion service (Hennadii Stepanov)
b3273cf403 net: Use network byte order for in_addr.s_addr (Hennadii Stepanov)

Pull request description:

  This PR adds ability to label incoming Tor connections as different from normal localhost connections.

  Closes #8973.
  Closes #16693.

  Default onion service target ports are:
  - 8334 on mainnnet
  - 18334 on testnet
  - 38334 on signet
  - 18445 on regtest

  To set the onion service target socket manually the extended `-bind` config option could be used:

  ```
  $ src/bitcoind -help | grep -A 6 -e '-bind'
    -bind=<addr>[:<port>][=onion]
         Bind to given address and always listen on it (default: 0.0.0.0). Use
         [host]:port notation for IPv6. Append =onion to tag any incoming
         connections to that address and port as incoming Tor connections
         (default: 127.0.0.1:8334=onion, testnet: 127.0.0.1:18334=onion,
         signet: 127.0.0.1:38334=onion, regtest: 127.0.0.1:18445=onion)

  ```

  Since [pr19991.02 update](https://github.com/bitcoin/bitcoin/pull/19991#issuecomment-698882284) this PR is an alternative to #19043.

ACKs for top commit:
  Sjors:
    re-utACK 96571b3d4c
  vasild:
    ACK 96571b3d4
  laanwj:
    Re-ACK 96571b3d4c

Tree-SHA512: cb0eade80f4b3395f405f775e1b89c086a1f09d5a4464df6cb4faf808d9c2245474e1720b2b538f203f6c1996507f69b09f5a6e35ea42633c10e22bd733d4438
This commit is contained in:
Wladimir J. van der Laan
2020-10-02 13:06:54 +02:00
parent 60ec57b3d7 96571b3d4c
commit df2129a234
8 changed files with 126 additions and 57 deletions
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41
src/init.cpp
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@@ -442,7 +442,7 @@ void SetupServerArgs(NodeContext& node)
argsman.AddArg("-addnode=<ip>", "Add a node to connect to and attempt to keep the connection open (see the `addnode` RPC command help for more info). This option can be specified multiple times to add multiple nodes.", ArgsManager::ALLOW_ANY | ArgsManager::NETWORK_ONLY, OptionsCategory::CONNECTION);
argsman.AddArg("-asmap=<file>", strprintf("Specify asn mapping used for bucketing of the peers (default: %s). Relative paths will be prefixed by the net-specific datadir location.", DEFAULT_ASMAP_FILENAME), ArgsManager::ALLOW_ANY, OptionsCategory::CONNECTION);
argsman.AddArg("-bantime=<n>", strprintf("Default duration (in seconds) of manually configured bans (default: %u)", DEFAULT_MISBEHAVING_BANTIME), ArgsManager::ALLOW_ANY, OptionsCategory::CONNECTION);
argsman.AddArg("-bind=<addr>", "Bind to given address and always listen on it. Use [host]:port notation for IPv6", ArgsManager::ALLOW_ANY | ArgsManager::NETWORK_ONLY, OptionsCategory::CONNECTION);
argsman.AddArg("-bind=<addr>[:<port>][=onion]", strprintf("Bind to given address and always listen on it (default: 0.0.0.0). Use [host]:port notation for IPv6. Append =onion to tag any incoming connections to that address and port as incoming Tor connections (default: 127.0.0.1:%u=onion, testnet: 127.0.0.1:%u=onion, signet: 127.0.0.1:%u=onion, regtest: 127.0.0.1:%u=onion)", defaultBaseParams->OnionServiceTargetPort(), testnetBaseParams->OnionServiceTargetPort(), signetBaseParams->OnionServiceTargetPort(), regtestBaseParams->OnionServiceTargetPort()), ArgsManager::ALLOW_ANY | ArgsManager::NETWORK_ONLY, OptionsCategory::CONNECTION);
argsman.AddArg("-connect=<ip>", "Connect only to the specified node; -noconnect disables automatic connections (the rules for this peer are the same as for -addnode). This option can be specified multiple times to connect to multiple nodes.", ArgsManager::ALLOW_ANY | ArgsManager::NETWORK_ONLY, OptionsCategory::CONNECTION);
argsman.AddArg("-discover", "Discover own IP addresses (default: 1 when listening and no -externalip or -proxy)", ArgsManager::ALLOW_ANY, OptionsCategory::CONNECTION);
argsman.AddArg("-dns", strprintf("Allow DNS lookups for -addnode, -seednode and -connect (default: %u)", DEFAULT_NAME_LOOKUP), ArgsManager::ALLOW_ANY, OptionsCategory::CONNECTION);
@@ -1918,9 +1918,6 @@ bool AppInitMain(const util::Ref& context, NodeContext& node, interfaces::BlockA
}
LogPrintf("nBestHeight = %d\n", chain_active_height);
if (args.GetBoolArg("-listenonion", DEFAULT_LISTEN_ONION))
StartTorControl();
Discover();
// Map ports with UPnP
@@ -1947,13 +1944,39 @@ bool AppInitMain(const util::Ref& context, NodeContext& node, interfaces::BlockA
connOptions.nMaxOutboundLimit = nMaxOutboundLimit;
connOptions.m_peer_connect_timeout = peer_connect_timeout;
for (const std::string& strBind : args.GetArgs("-bind")) {
CService addrBind;
if (!Lookup(strBind, addrBind, GetListenPort(), false)) {
return InitError(ResolveErrMsg("bind", strBind));
for (const std::string& bind_arg : args.GetArgs("-bind")) {
CService bind_addr;
const size_t index = bind_arg.rfind('=');
if (index == std::string::npos) {
if (Lookup(bind_arg, bind_addr, GetListenPort(), false)) {
connOptions.vBinds.push_back(bind_addr);
continue;
}
} else {
const std::string network_type = bind_arg.substr(index + 1);
if (network_type == "onion") {
const std::string truncated_bind_arg = bind_arg.substr(0, index);
if (Lookup(truncated_bind_arg, bind_addr, BaseParams().OnionServiceTargetPort(), false)) {
connOptions.onion_binds.push_back(bind_addr);
continue;
}
}
}
connOptions.vBinds.push_back(addrBind);
return InitError(ResolveErrMsg("bind", bind_arg));
}
if (connOptions.onion_binds.empty()) {
connOptions.onion_binds.push_back(DefaultOnionServiceTarget());
}
if (args.GetBoolArg("-listenonion", DEFAULT_LISTEN_ONION)) {
const auto bind_addr = connOptions.onion_binds.front();
if (connOptions.onion_binds.size() > 1) {
InitWarning(strprintf(_("More than one onion bind address is provided. Using %s for the automatically created Tor onion service."), bind_addr.ToStringIPPort()));
}
StartTorControl(bind_addr);
}
for (const std::string& strBind : args.GetArgs("-whitebind")) {
NetWhitebindPermissions whitebind;
bilingual_str error;