diff options
| -rw-r--r-- | src/init.cpp | 17 | ||||
| -rw-r--r-- | src/net.cpp | 2 | ||||
| -rwxr-xr-x | test/functional/feature_config_args.py | 3 |
3 files changed, 20 insertions, 2 deletions
diff --git a/src/init.cpp b/src/init.cpp index a94bbe6460..7bf60d3b76 100644 --- a/src/init.cpp +++ b/src/init.cpp @@ -719,6 +719,16 @@ void InitParameterInteraction(ArgsManager& args) if (args.SoftSetBoolArg("-whitelistrelay", true)) LogPrintf("%s: parameter interaction: -whitelistforcerelay=1 -> setting -whitelistrelay=1\n", __func__); } + if (args.IsArgSet("-onlynet")) { + const auto onlynets = args.GetArgs("-onlynet"); + bool clearnet_reachable = std::any_of(onlynets.begin(), onlynets.end(), [](const auto& net) { + const auto n = ParseNetwork(net); + return n == NET_IPV4 || n == NET_IPV6; + }); + if (!clearnet_reachable && args.SoftSetBoolArg("-dnsseed", false)) { + LogPrintf("%s: parameter interaction: -onlynet excludes IPv4 and IPv6 -> setting -dnsseed=0\n", __func__); + } + } } /** @@ -1322,6 +1332,13 @@ bool AppInitMain(NodeContext& node, interfaces::BlockAndHeaderTipInfo* tip_info) // 2.1. -onlynet is not given or // 2.2. -onlynet=cjdns is given + // Requesting DNS seeds entails connecting to IPv4/IPv6, which -onlynet options may prohibit: + // If -dnsseed=1 is explicitly specified, abort. If it's left unspecified by the user, we skip + // the DNS seeds by adjusting -dnsseed in InitParameterInteraction. + if (args.GetBoolArg("-dnsseed") == true && !IsReachable(NET_IPV4) && !IsReachable(NET_IPV6)) { + return InitError(strprintf(_("Incompatible options: -dnsseed=1 was explicitly specified, but -onlynet forbids connections to IPv4/IPv6"))); + }; + // Check for host lookup allowed before parsing any network related parameters fNameLookup = args.GetBoolArg("-dns", DEFAULT_NAME_LOOKUP); diff --git a/src/net.cpp b/src/net.cpp index b7d9829b13..5db1b4e1a9 100644 --- a/src/net.cpp +++ b/src/net.cpp @@ -1630,7 +1630,7 @@ void CConnman::ThreadOpenConnections(const std::vector<std::string> connect) LOCK2(m_addr_fetches_mutex, m_added_nodes_mutex); if (m_addr_fetches.empty() && m_added_nodes.empty()) { add_fixed_seeds_now = true; - LogPrintf("Adding fixed seeds as -dnsseed=0, -addnode is not provided and all -seednode(s) attempted\n"); + LogPrintf("Adding fixed seeds as -dnsseed=0 (or IPv4/IPv6 connections are disabled via -onlynet), -addnode is not provided and all -seednode(s) attempted\n"); } } diff --git a/test/functional/feature_config_args.py b/test/functional/feature_config_args.py index 6c51a5ac31..eb31bca29a 100755 --- a/test/functional/feature_config_args.py +++ b/test/functional/feature_config_args.py @@ -186,11 +186,12 @@ class ConfArgsTest(BitcoinTestFramework): with self.nodes[0].assert_debug_log(expected_msgs=[ "Loaded 0 addresses from peers.dat", "DNS seeding disabled", - "Adding fixed seeds as -dnsseed=0, -addnode is not provided and all -seednode(s) attempted\n", + "Adding fixed seeds as -dnsseed=0 (or IPv4/IPv6 connections are disabled via -onlynet), -addnode is not provided and all -seednode(s) attempted\n", ]): self.start_node(0, extra_args=['-dnsseed=0', '-fixedseeds=1']) assert time.time() - start < 60 self.stop_node(0) + self.nodes[0].assert_start_raises_init_error(['-dnsseed=1', '-onlynet=i2p', '-i2psam=127.0.0.1:7656'], "Error: Incompatible options: -dnsseed=1 was explicitly specified, but -onlynet forbids connections to IPv4/IPv6") # No peers.dat exists and dns seeds are disabled. # We expect the node will not add fixed seeds when explicitly disabled. |