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net: Extend -bind config option with optional network type

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This commit is contained in:
Hennadii Stepanov 2020-09-29 18:03:43 +03:00
parent 92bd3c1da4
commit bb145c9050
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GPG Key ID: 410108112E7EA81F
3 changed files with 54 additions and 13 deletions
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41
src/init.cpp
View File

@ -441,7 +441,7 @@ 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);
@ -1911,9 +1911,6 @@ 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(DefaultOnionServiceTarget());
Discover();
// Map ports with UPnP
@ -1940,13 +1937,39 @@ 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;

19
src/net.cpp
View File

@ -84,6 +84,11 @@ enum BindFlags {
BF_NONE = 0,
BF_EXPLICIT = (1U << 0),
BF_REPORT_ERROR = (1U << 1),
/**
* Do not call AddLocal() for our special addresses, e.g., for incoming
* Tor connections, to prevent gossiping them over the network.
*/
BF_DONT_ADVERTISE = (1U << 2),
};
// The set of sockets cannot be modified while waiting
@ -2305,14 +2310,17 @@ bool CConnman::Bind(const CService &addr, unsigned int flags, NetPermissionFlags
return false;
}
if (addr.IsRoutable() && fDiscover && (permissions & PF_NOBAN) == 0) {
if (addr.IsRoutable() && fDiscover && !(flags & BF_DONT_ADVERTISE) && !(permissions & PF_NOBAN)) {
AddLocal(addr, LOCAL_BIND);
}
return true;
}
bool CConnman::InitBinds(const std::vector<CService>& binds, const std::vector<NetWhitebindPermissions>& whiteBinds)
bool CConnman::InitBinds(
const std::vector<CService>& binds,
const std::vector<NetWhitebindPermissions>& whiteBinds,
const std::vector<CService>& onion_binds)
{
bool fBound = false;
for (const auto& addrBind : binds) {
@ -2328,6 +2336,11 @@ bool CConnman::InitBinds(const std::vector<CService>& binds, const std::vector<N
fBound |= Bind(CService(inaddr6_any, GetListenPort()), BF_NONE, NetPermissionFlags::PF_NONE);
fBound |= Bind(CService(inaddr_any, GetListenPort()), !fBound ? BF_REPORT_ERROR : BF_NONE, NetPermissionFlags::PF_NONE);
}
for (const auto& addr_bind : onion_binds) {
fBound |= Bind(addr_bind, BF_EXPLICIT | BF_DONT_ADVERTISE, NetPermissionFlags::PF_NONE);
}
return fBound;
}
@ -2346,7 +2359,7 @@ bool CConnman::Start(CScheduler& scheduler, const Options& connOptions)
nMaxOutboundCycleStartTime = 0;
}
if (fListen && !InitBinds(connOptions.vBinds, connOptions.vWhiteBinds)) {
if (fListen && !InitBinds(connOptions.vBinds, connOptions.vWhiteBinds, connOptions.onion_binds)) {
if (clientInterface) {
clientInterface->ThreadSafeMessageBox(
_("Failed to listen on any port. Use -listen=0 if you want this."),

7
src/net.h
View File

@ -209,6 +209,7 @@ public:
std::vector<NetWhitelistPermissions> vWhitelistedRange;
std::vector<NetWhitebindPermissions> vWhiteBinds;
std::vector<CService> vBinds;
std::vector<CService> onion_binds;
bool m_use_addrman_outgoing = true;
std::vector<std::string> m_specified_outgoing;
std::vector<std::string> m_added_nodes;
@ -406,7 +407,11 @@ private:
bool BindListenPort(const CService& bindAddr, bilingual_str& strError, NetPermissionFlags permissions);
bool Bind(const CService& addr, unsigned int flags, NetPermissionFlags permissions);
bool InitBinds(const std::vector<CService>& binds, const std::vector<NetWhitebindPermissions>& whiteBinds);
bool InitBinds(
const std::vector<CService>& binds,
const std::vector<NetWhitebindPermissions>& whiteBinds,
const std::vector<CService>& onion_binds);
void ThreadOpenAddedConnections();
void AddAddrFetch(const std::string& strDest);
void ProcessAddrFetch();