aboutsummaryrefslogtreecommitdiff
path: root/src
diff options
context:
space:
mode:
authorWladimir J. van der Laan <laanwj@gmail.com>2014-02-17 17:35:40 +0100
committerWladimir J. van der Laan <laanwj@gmail.com>2014-05-13 07:23:23 +0200
commitdeb3572ab160221124dfa3e9c5c4e493529f59e4 (patch)
treefaf1d8bd451deea0bb030c69ca119f4f22eb3e4e /src
parentfa41db8779a64afd3109b86ab24f948202d237d9 (diff)
Add -rpcbind option to allow binding RPC port on a specific interface
Add -rpcbind command option to specify binding RPC service on one or multiple specific interfaces. Functionality if -rpcbind is not specified remains the same as before: - If no -rpcallowip specified, bind on localhost - If no -rpcbind specified, bind on any interface Implements part of #3111.
Diffstat (limited to 'src')
-rw-r--r--src/init.cpp3
-rw-r--r--src/rpcserver.cpp95
2 files changed, 62 insertions, 36 deletions
diff --git a/src/init.cpp b/src/init.cpp
index 7007707855..7664988762 100644
--- a/src/init.cpp
+++ b/src/init.cpp
@@ -304,10 +304,11 @@ std::string HelpMessage(HelpMessageMode hmm)
strUsage += "\n" + _("RPC server options:") + "\n";
strUsage += " -server " + _("Accept command line and JSON-RPC commands") + "\n";
+ strUsage += " -rpcbind=<addr> " + _("Bind to given address to listen for JSON-RPC connections. Use [host]:port notation for IPv6. This option can be specified multiple times (default: bind to all interfaces)") + "\n";
strUsage += " -rpcuser=<user> " + _("Username for JSON-RPC connections") + "\n";
strUsage += " -rpcpassword=<pw> " + _("Password for JSON-RPC connections") + "\n";
strUsage += " -rpcport=<port> " + _("Listen for JSON-RPC connections on <port> (default: 8332 or testnet: 18332)") + "\n";
- strUsage += " -rpcallowip=<ip> " + _("Allow JSON-RPC connections from specified IP address") + "\n";
+ strUsage += " -rpcallowip=<ip> " + _("Allow JSON-RPC connections from specified IP address. This option can be specified multiple times") + "\n";
strUsage += " -rpcthreads=<n> " + _("Set the number of threads to service RPC calls (default: 4)") + "\n";
strUsage += "\n" + _("RPC SSL options: (see the Bitcoin Wiki for SSL setup instructions)") + "\n";
diff --git a/src/rpcserver.cpp b/src/rpcserver.cpp
index d4a229b092..2534a9dcf4 100644
--- a/src/rpcserver.cpp
+++ b/src/rpcserver.cpp
@@ -508,6 +508,14 @@ static void RPCAcceptHandler(boost::shared_ptr< basic_socket_acceptor<Protocol,
}
}
+static ip::tcp::endpoint ParseEndpoint(const std::string &strEndpoint, int defaultPort)
+{
+ std::string addr;
+ int port = defaultPort;
+ SplitHostPort(strEndpoint, port, addr);
+ return ip::tcp::endpoint(asio::ip::address::from_string(addr), port);
+}
+
void StartRPCThreads()
{
rpc_allow_subnets.clear();
@@ -589,57 +597,74 @@ void StartRPCThreads()
SSL_CTX_set_cipher_list(rpc_ssl_context->impl(), strCiphers.c_str());
}
- // Try a dual IPv6/IPv4 socket, falling back to separate IPv4 and IPv6 sockets
- const bool loopback = !mapArgs.count("-rpcallowip");
- asio::ip::address bindAddress = loopback ? asio::ip::address_v6::loopback() : asio::ip::address_v6::any();
- ip::tcp::endpoint endpoint(bindAddress, GetArg("-rpcport", Params().RPCPort()));
- boost::system::error_code v6_only_error;
+ std::vector<ip::tcp::endpoint> vEndpoints;
+ bool bBindAny = false;
+ int defaultPort = GetArg("-rpcport", Params().RPCPort());
+ if (!mapArgs.count("-rpcallowip")) // Default to loopback if not allowing external IPs
+ {
+ vEndpoints.push_back(ip::tcp::endpoint(asio::ip::address_v6::loopback(), defaultPort));
+ vEndpoints.push_back(ip::tcp::endpoint(asio::ip::address_v4::loopback(), defaultPort));
+ if (mapArgs.count("-rpcbind"))
+ {
+ LogPrintf("WARNING: option -rpcbind was ignored because -rpcallowip was not specified, refusing to allow everyone to connect\n");
+ }
+ } else if (mapArgs.count("-rpcbind")) // Specific bind address
+ {
+ BOOST_FOREACH(const std::string &addr, mapMultiArgs["-rpcbind"])
+ {
+ try {
+ vEndpoints.push_back(ParseEndpoint(addr, defaultPort));
+ }
+ catch(boost::system::system_error &e)
+ {
+ uiInterface.ThreadSafeMessageBox(
+ strprintf(_("Could not parse -rpcbind value %s as network address"), addr),
+ "", CClientUIInterface::MSG_ERROR);
+ StartShutdown();
+ return;
+ }
+ }
+ } else { // No specific bind address specified, bind to any
+ vEndpoints.push_back(ip::tcp::endpoint(asio::ip::address_v6::any(), defaultPort));
+ vEndpoints.push_back(ip::tcp::endpoint(asio::ip::address_v4::any(), defaultPort));
+ // Prefer making the socket dual IPv6/IPv4 instead of binding
+ // to both addresses seperately.
+ bBindAny = true;
+ }
bool fListening = false;
std::string strerr;
- try
+ BOOST_FOREACH(const ip::tcp::endpoint &endpoint, vEndpoints)
{
+ asio::ip::address bindAddress = endpoint.address();
+ LogPrintf("Binding RPC on address %s port %i (IPv4+IPv6 bind any: %i)\n", bindAddress.to_string(), endpoint.port(), bBindAny);
+ boost::system::error_code v6_only_error;
boost::shared_ptr<ip::tcp::acceptor> acceptor(new ip::tcp::acceptor(*rpc_io_service));
rpc_acceptors.push_back(acceptor);
- acceptor->open(endpoint.protocol());
- acceptor->set_option(boost::asio::ip::tcp::acceptor::reuse_address(true));
-
- // Try making the socket dual IPv6/IPv4 (if listening on the "any" address)
- acceptor->set_option(boost::asio::ip::v6_only(loopback), v6_only_error);
-
- acceptor->bind(endpoint);
- acceptor->listen(socket_base::max_connections);
-
- RPCListen(acceptor, *rpc_ssl_context, fUseSSL);
-
- fListening = true;
- }
- catch(boost::system::system_error &e)
- {
- strerr = strprintf(_("An error occurred while setting up the RPC port %u for listening on IPv6, falling back to IPv4: %s"), endpoint.port(), e.what());
- }
- try {
- // If dual IPv6/IPv4 failed (or we're opening loopback interfaces only), open IPv4 separately
- if (!fListening || loopback || v6_only_error)
- {
- bindAddress = loopback ? asio::ip::address_v4::loopback() : asio::ip::address_v4::any();
- endpoint.address(bindAddress);
- boost::shared_ptr<ip::tcp::acceptor> acceptor(new ip::tcp::acceptor(*rpc_io_service));
- rpc_acceptors.push_back(acceptor);
+ try {
acceptor->open(endpoint.protocol());
acceptor->set_option(boost::asio::ip::tcp::acceptor::reuse_address(true));
+
+ // Try making the socket dual IPv6/IPv4 when listening on the IPv6 "any" address
+ acceptor->set_option(boost::asio::ip::v6_only(
+ !bBindAny || bindAddress != asio::ip::address_v6::any()), v6_only_error);
+
acceptor->bind(endpoint);
acceptor->listen(socket_base::max_connections);
RPCListen(acceptor, *rpc_ssl_context, fUseSSL);
fListening = true;
+ // If dual IPv6/IPv4 bind succesful, skip binding to IPv4 separately
+ if(bBindAny && bindAddress == asio::ip::address_v6::any() && !v6_only_error)
+ break;
+ }
+ catch(boost::system::system_error &e)
+ {
+ LogPrintf("ERROR: Binding RPC on address %s port %i failed: %s\n", bindAddress.to_string(), endpoint.port(), e.what());
+ strerr = strprintf(_("An error occurred while setting up the RPC address %s port %u for listening: %s"), bindAddress.to_string(), endpoint.port(), e.what());
}
- }
- catch(boost::system::system_error &e)
- {
- strerr = strprintf(_("An error occurred while setting up the RPC port %u for listening on IPv4: %s"), endpoint.port(), e.what());
}
if (!fListening) {