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bitcoind-rpc-public-whitelist: add getnodeaddresses

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`getnodeaddresses` returns addresses of peers the bitcoind instance
has seen over its lifetime. It's safe for public use.
This commit is contained in:
Erik Arvstedt 2024-07-31 18:09:45 +02:00
parent 7dad87527f
commit fee9dc8c17
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GPG key ID: 33312B944DD97846
2 changed files with 5 additions and 26 deletions
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1
modules/bitcoind-rpc-public-whitelist.nix
View file

@ -35,6 +35,7 @@
"getnetworkhashps" "getnetworkhashps"
# Network # Network
"getnetworkinfo" "getnetworkinfo"
"getnodeaddresses"
"getpeerinfo" "getpeerinfo"
# Rawtransactions # Rawtransactions
"analyzepsbt" "analyzepsbt"

28
modules/lnd.nix
View file

@ -174,7 +174,7 @@ let
${optionalString (cfg.tor-socks != null) "tor.socks=${cfg.tor-socks}"} ${optionalString (cfg.tor-socks != null) "tor.socks=${cfg.tor-socks}"}
bitcoind.rpchost=${bitcoindRpcAddress}:${toString bitcoind.rpc.port} bitcoind.rpchost=${bitcoindRpcAddress}:${toString bitcoind.rpc.port}
bitcoind.rpcuser=${bitcoind.rpc.users.${rpcUser}.name} bitcoind.rpcuser=${bitcoind.rpc.users.public.name}
bitcoind.zmqpubrawblock=${zmqHandleSpecialAddress bitcoind.zmqpubrawblock} bitcoind.zmqpubrawblock=${zmqHandleSpecialAddress bitcoind.zmqpubrawblock}
bitcoind.zmqpubrawtx=${zmqHandleSpecialAddress bitcoind.zmqpubrawtx} bitcoind.zmqpubrawtx=${zmqHandleSpecialAddress bitcoind.zmqpubrawtx}
@ -184,16 +184,11 @@ let
''; '';
zmqHandleSpecialAddress = builtins.replaceStrings [ "0.0.0.0" "[::]" ] [ "127.0.0.1" "[::1]" ]; zmqHandleSpecialAddress = builtins.replaceStrings [ "0.0.0.0" "[::]" ] [ "127.0.0.1" "[::1]" ];
isPruned = bitcoind.prune > 0;
# When bitcoind pruning is enabled, lnd requires non-public RPC commands `getpeerinfo`, `getnodeaddresses`
# to fetch missing blocks from peers (implemented in btcsuite/btcwallet/chain/pruned_block_dispatcher.go)
rpcUser = if isPruned then "lnd" else "public";
in { in {
inherit options; inherit options;
config = mkIf cfg.enable (mkMerge [ { config = mkIf cfg.enable {
assertions = [ assertions = [
{ assertion = { assertion =
!(config.services ? clightning) !(config.services ? clightning)
@ -233,7 +228,7 @@ in {
preStart = '' preStart = ''
install -m600 ${configFile} '${cfg.dataDir}/lnd.conf' install -m600 ${configFile} '${cfg.dataDir}/lnd.conf'
{ {
echo "bitcoind.rpcpass=$(cat ${secretsDir}/bitcoin-rpcpassword-${rpcUser})" echo "bitcoind.rpcpass=$(cat ${secretsDir}/bitcoin-rpcpassword-public)"
${optionalString (cfg.getPublicAddressCmd != "") '' ${optionalString (cfg.getPublicAddressCmd != "") ''
echo "externalip=$(${cfg.getPublicAddressCmd})" echo "externalip=$(${cfg.getPublicAddressCmd})"
''} ''}
@ -311,22 +306,5 @@ in {
makePasswordSecret lnd-wallet-password makePasswordSecret lnd-wallet-password
makeCert lnd '${nbLib.mkCertExtraAltNames cfg.certificate}' makeCert lnd '${nbLib.mkCertExtraAltNames cfg.certificate}'
''; '';
}
(mkIf isPruned {
services.bitcoind.rpc.users.lnd = {
passwordHMACFromFile = true;
rpcwhitelist = bitcoind.rpc.users.public.rpcwhitelist ++ [
"getpeerinfo"
"getnodeaddresses"
];
}; };
nix-bitcoin.secrets = {
bitcoin-rpcpassword-lnd.user = cfg.user;
bitcoin-HMAC-lnd.user = bitcoind.user;
};
nix-bitcoin.generateSecretsCmds.lndBitcoinRPC = ''
makeBitcoinRPCPassword lnd
'';
}) ]);
} }