Added an option that allows the stationchat to bind to its config address instead of the default option of binding to any interface

extras/swgchat.cfg.dist

@@ -12,3 +12,9 @@ registrar_port = 5000
 
 # Path to the application database
 database_path = chat.db
+
+# Path to the application database
+database_path = chat.db
+
+# When set to true, binds to the config address; otherwise, binds on any interface
+bind_to_ip = false

src/stationapi/Node.hpp

@@ -11,13 +11,21 @@
 template <typename NodeT, typename ClientT>
 class Node : public UdpManagerHandler {
 public:
-    explicit Node(NodeT* node, const std::string& listenAddress, uint16_t listenPort)
+    explicit Node(NodeT* node, const std::string& listenAddress, uint16_t listenPort, bool bindToIp = false)
         : node_{node} {
 
         UdpManager::Params params;
         params.handler = this;
         params.port = listenPort;
 
+        if (bindToIp) {
+            if (listenAddress.length() > sizeof(params.bindIpAddress)) {
+                throw std::runtime_error{"Invalid bind ip specified: " + listenAddress};
+            }
+
+            std::copy(std::begin(listenAddress), std::end(listenAddress), params.bindIpAddress);
+        }
+
         udpManager_ = new UdpManager(&params);
     }
 

src/stationchat/GatewayNode.cpp

@@ -9,7 +9,7 @@
 #include <sqlite3.h>
 
 GatewayNode::GatewayNode(StationChatConfig& config)
-    : Node(this, config.gatewayAddress, config.gatewayPort)
+    : Node(this, config.gatewayAddress, config.gatewayPort, config.bindToIp)
     , config_{config} {
     if (sqlite3_open(config.chatDatabasePath.c_str(), &db_) != SQLITE_OK) {
         throw std::runtime_error("Can't open database: " + std::string{sqlite3_errmsg(db_)});

src/stationchat/RegistrarNode.cpp

@@ -4,7 +4,7 @@
 #include "StationChatConfig.hpp"
 
 RegistrarNode::RegistrarNode(StationChatConfig& config)
-    : Node(this, config.registrarAddress, config.registrarPort)
+    : Node(this, config.registrarAddress, config.registrarPort, config.bindToIp)
     , config_{config} {}
 
 RegistrarNode::~RegistrarNode() {}

src/stationchat/StationChatConfig.hpp

@@ -7,12 +7,14 @@
 struct StationChatConfig {
     StationChatConfig() = default;
     StationChatConfig(const std::string& gatewayAddress_, uint16_t gatewayPort_,
-        const std::string& registrarAddress_, uint16_t registrarPort_, const std::string& chatDatabasePath_)
+        const std::string& registrarAddress_, uint16_t registrarPort_, const std::string& chatDatabasePath_,
+        bool bindToIp_)
         : gatewayAddress{gatewayAddress_}
         , gatewayPort{gatewayPort_}
         , registrarAddress{registrarAddress_}
         , registrarPort{registrarPort_}
-        , chatDatabasePath{chatDatabasePath_} {}
+        , chatDatabasePath{chatDatabasePath_}
+        , bindToIp{bindToIp_} {}
 
     const uint32_t version = 2;
     std::string gatewayAddress;
@@ -21,4 +23,5 @@ struct StationChatConfig {
     uint16_t registrarPort;
     std::string chatDatabasePath;
     std::string loggerConfig;
+    bool bindToIp;
 };

src/stationchat/main.cpp

@@ -20,13 +20,13 @@
 
 INITIALIZE_EASYLOGGINGPP
 
-StationChatConfig BuildConfiguration(int argc, char* argv[]);
+StationChatConfig BuildConfiguration(int argc, const char* argv[]);
 
 #ifdef __GNUC__
 void SignalHandler(int sig);
 #endif
 
-int main(int argc, char* argv[]) {
+int main(int argc, const char* argv[]) {
 #ifdef __GNUC__
     signal(SIGSEGV, SignalHandler);
 #endif
@@ -46,7 +46,7 @@ int main(int argc, char* argv[]) {
     return 0;
 }
 
-StationChatConfig BuildConfiguration(int argc, char* argv[]) {
+StationChatConfig BuildConfiguration(int argc, const char* argv[]) {
     namespace po = boost::program_options;
     StationChatConfig config;
     std::string configFile;
@@ -72,6 +72,8 @@ StationChatConfig BuildConfiguration(int argc, char* argv[]) {
             "address for registrar connections")
         ("registrar_port", po::value<uint16_t>(&config.registrarPort)->default_value(5000),
             "port for registrar connections")
+        ("bind_to_ip", po::value<bool>(&config.bindToIp)->default_value(false),
+            "when set to true, binds to the config address; otherwise, binds on any interface")
         ("database_path", po::value<std::string>(&config.chatDatabasePath)->default_value("chat.db"),
             "path to the sqlite3 database file")
         ;