Added custom broadcasts file

.gitignore

@@ -3,3 +3,10 @@
 *.o
 net.pb.*
 *steam_api*
+release/*
+*.obj
+base.exp
+base.lib
+rtlgenrandom*
+steamclient.exp
+steamclient.lib

Makefile

@@ -25,8 +25,8 @@ release: CXX_FLAGS += -DNDEBUG -DEMU_RELEASE_BUILD -Ofast
 release: LD_FLAGS += -lpthread
 release32: CXX_FLAGS += -m32
 release32: LD_FLAGS += -m32
-debug: CXX_FLAGS += -g3 -fsanitize=address
+debug: CXX_FLAGS += -g3
-debug: LD_FLAGS += -lasan
+debug: LD_FLAGS += -lpthread
 release: library
 release32: release
 debug: library

dll/network.cpp

@@ -280,7 +280,7 @@ static int receive_packet(sock_t sock, IP_PORT *ip_port, char *data, unsigned lo
     return -1;
 }
 
-static bool send_broadcasts(sock_t sock, uint16 port, char *data, unsigned long length)
+static bool send_broadcasts(sock_t sock, uint16 port, char *data, unsigned long length, uint32_t *custom_broadcasts)
 {
     static std::chrono::high_resolution_clock::time_point last_get_broadcast_info;
     if (number_broadcasts < 0 || check_timedout(last_get_broadcast_info, 60.0)) {
@@ -302,6 +302,23 @@ static bool send_broadcasts(sock_t sock, uint16 port, char *data, unsigned long
         IP_PORT ip_port = broadcasts[i];
     }
 
+    /** 
+     * Custom targeted clients server broadcaster
+     * 
+     * Sends to custom IPs the broadcast packet
+     * This is useful in cases of undetected network interfaces
+     */
+    PRINT_DEBUG("start custom broadcasts\n");
+    IP_PORT custom_targeted_broadcast;
+    custom_targeted_broadcast.port = port;
+    for(int i = 0; i < MAX_CUSTOM_BROADCASTS; i++) {
+        if(custom_broadcasts[i] == 0)
+            break;
+        custom_targeted_broadcast.ip = custom_broadcasts[i];
+        send_packet_to(sock, custom_targeted_broadcast, data, length);
+    }
+    PRINT_DEBUG("end custom broadcasts\n");
+
     return true;
 }
 
@@ -666,7 +683,7 @@ bool Networking::handle_low_level_udp(Common_Message *msg, IP_PORT ip_port)
 
 #define NUM_TCP_WAITING 128
 
-Networking::Networking(CSteamID id, uint32 appid, uint16 port)
+Networking::Networking(CSteamID id, uint32 appid, uint16 port, uint32_t *custom_broadcasts)
 {
     run_at_startup();
     tcp_port = udp_port = port;
@@ -674,6 +691,8 @@ Networking::Networking(CSteamID id, uint32 appid, uint16 port)
     alive = true;
     last_run = std::chrono::high_resolution_clock::now();
     this->appid = appid;
+    for(int i = 0; i < MAX_CUSTOM_BROADCASTS; i++)
+        this->custom_broadcasts[i] = custom_broadcasts[i];
 
     sock_t sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
     PRINT_DEBUG("UDP socket: %u\n", sock);
@@ -783,9 +802,9 @@ void Networking::send_announce_broadcasts()
     size_t size = msg.ByteSizeLong(); 
     char *buffer = new char[size];
     msg.SerializeToArray(buffer, size);
-    send_broadcasts(udp_socket, htons(DEFAULT_PORT), buffer, size);
+    send_broadcasts(udp_socket, htons(DEFAULT_PORT), buffer, size, this->custom_broadcasts);
     if (udp_port != DEFAULT_PORT) {
-        send_broadcasts(udp_socket, htons(udp_port), buffer, size);
+        send_broadcasts(udp_socket, htons(udp_port), buffer, size, this->custom_broadcasts);
     }
 
     delete[] buffer;

dll/network.h

@@ -20,6 +20,8 @@
 #ifndef NETWORK_INCLUDE
 #define NETWORK_INCLUDE
 
+#define MAX_CUSTOM_BROADCASTS 128
+
 #include "net.pb.h"
 #include <chrono>
 
@@ -106,6 +108,7 @@ class Networking {
     std::vector<CSteamID> ids;
     uint32 appid;
     std::chrono::high_resolution_clock::time_point last_broadcast;
+    uint32_t custom_broadcasts[MAX_CUSTOM_BROADCASTS];
 
     std::vector<struct TCP_Socket> accepted;
     std::recursive_mutex mutex;
@@ -120,7 +123,7 @@ class Networking {
 
     Common_Message create_announce(bool request);
 public:
-    Networking(CSteamID id, uint32 appid, uint16 port);
+    Networking(CSteamID id, uint32 appid, uint16 port, uint32_t *custom_broadcasts);
     void addListenId(CSteamID id);
     void setAppID(uint32 appid);
     void Run();

dll/steam_client.cpp

@@ -19,6 +19,7 @@
 
 #include <fstream>
 
+
 static void network_thread(Networking *network)
 {
     PRINT_DEBUG("network thread starting\n");
@@ -112,6 +113,7 @@ Steam_Client::Steam_Client()
     local_storage = new Local_Storage(save_path);
     local_storage->setAppId(appid);
 
+    // Listen port
     char array_port[10] = {};
     array_port[0] = '0';
     local_storage->get_data_settings("listen_port.txt", array_port, sizeof(array_port) - 1);
@@ -122,19 +124,68 @@ Steam_Client::Steam_Client()
         local_storage->store_data_settings("listen_port.txt", array_port, strlen(array_port));
     }
 
-    char name[32] = {};
+    // Custom broadcasts
 
+    uint32_t custom_broadcasts[MAX_CUSTOM_BROADCASTS] = {0};
+    int readIP = 0;
+
+    std::string broadcasts_filepath = Local_Storage::get_game_settings_path() + "custom_broadcasts.txt";
+
+    std::ifstream broadcasts_file(broadcasts_filepath);
+    PRINT_DEBUG("Broadcasts file path: %s\n", broadcasts_filepath.c_str());
+    if (broadcasts_file.is_open()) {
+        std::string line;
+        while (std::getline(broadcasts_file, line) && readIP < MAX_CUSTOM_BROADCASTS) {
+            int offset = 0;
+            size_t pos = 0;
+            std::string tok;
+            uint32_t current_ip = 0;
+            while((pos = line.find(".")) != std::string::npos && offset < 32)
+            {
+                tok = line.substr(0, pos);
+                try
+                {
+                    current_ip += (std::stoi(tok) << offset);
+                }
+                catch(std::invalid_argument ex)
+                {
+                    offset = -1;
+                    break;
+                }
+                line.erase(0, pos+1);
+                offset += 8;
+            }
+            if(pos == std::string::npos && offset != -1)
+            {
+                try
+                {
+                    current_ip += (std::stoi(line) << offset);
+                    custom_broadcasts[readIP++] = current_ip;
+                }
+                catch(std::invalid_argument ex)
+                {
+                    
+                }
+            }
+        }
+    }
+    
+
+    // Acount name
+    char name[32] = {};
     if (local_storage->get_data_settings("account_name.txt", name, sizeof(name) - 1) <= 0) {
         strcpy(name, DEFAULT_NAME);
         local_storage->store_data_settings("account_name.txt", name, strlen(name));
     }
 
+    // Language
     char language[32] = {};
     if (local_storage->get_data_settings("language.txt", language, sizeof(language) - 1) <= 0) {
         strcpy(language, DEFAULT_LANGUAGE);
         local_storage->store_data_settings("language.txt", language, strlen(language));
     }
 
+    // Steam ID
     char array_steam_id[32] = {};
     CSteamID user_id;
     uint64 steam_id = 0;
@@ -222,7 +273,7 @@ Steam_Client::Steam_Client()
         }
     }
 
-    network = new Networking(settings_server->get_local_steam_id(), appid, port);
+    network = new Networking(settings_server->get_local_steam_id(), appid, port, custom_broadcasts);
 
     callback_results_client = new SteamCallResults();
     callback_results_server = new SteamCallResults();
@@ -230,7 +281,7 @@ Steam_Client::Steam_Client()
     callbacks_server = new SteamCallBacks(callback_results_server);
     run_every_runcb = new RunEveryRunCB();
 
-    PRINT_DEBUG("steam client init: id: %llu server id: %llu appid: %u port: %u \n", user_id.ConvertToUint64(), settings_server->get_local_steam_id().ConvertToUint64(), appid, port);
+    PRINT_DEBUG("steam client init: id: %llu server id: %llu appid: %u port: %u custom broadcasts: %u\n", user_id.ConvertToUint64(), settings_server->get_local_steam_id().ConvertToUint64(), appid, port, sizeof(custom_broadcasts));
 
     steam_user = new Steam_User(settings_client, local_storage, network, callback_results_client, callbacks_client);
     steam_friends = new Steam_Friends(settings_client, network, callback_results_client, callbacks_client, run_every_runcb);