custom broadcasts file can now contain domains.

custom broadcasts can now be put in the steam_settings folder.

Readme_release.txt

@@ -52,8 +52,9 @@ Offline mode:
 Some games that connect to online servers might only work if the steam emu behaves like steam is in offline mode. If you need this create a offline.txt file in the steam_settings folder.
 
 Custom Broadcast ips:
-If you want to set custom ips which the emulator will send broadcast packets to, make a list of them, one on each line in: Goldberg SteamEmu Saves\settings\custom_broadcasts.txt
-
+If you want to set custom ips (or domains) which the emulator will send broadcast packets to, make a list of them, one on each line in: Goldberg SteamEmu Saves\settings\custom_broadcasts.txt
+If the custom ips/domains are specific for one game only you can put the custom_broadcasts.txt in the steam_settings\ folder.
+An example is provided in steam_settings.EXAMPLE\custom_broadcasts.EXAMPLE.txt
 
 Support for CPY steam_api(64).dll cracks: See the build in the experimental folder.
 

dll/network.cpp

@@ -30,6 +30,7 @@
 #include <sys/ioctl.h>
 #include <unistd.h>
 #include <linux/netdevice.h>
+#include <netdb.h>
 #endif
 
 #define MAX_BROADCASTS 16
@@ -467,6 +468,26 @@ static void socket_timeouts(struct TCP_Socket &socket, double extra_time)
     }
 }
 
+std::set<uint32> Networking::resolve_ip(std::string dns)
+{
+    std::set<uint32> ips;
+    struct addrinfo* result;
+
+    if (getaddrinfo(dns.c_str(), NULL, NULL, &result) == 0) {
+        for (struct addrinfo *res = result; res != NULL; res = res->ai_next) {
+            PRINT_DEBUG("%u %u\n", res->ai_addrlen, res->ai_family);
+            if (res->ai_family == AF_INET) {
+                struct sockaddr_in *ipv4 = (struct sockaddr_in *)res->ai_addr;
+                uint32 ip;
+                memcpy(&ip, &ipv4->sin_addr, sizeof(ip));
+                ips.insert(ntohl(ip));
+            }
+        }
+    }
+
+    return ips;
+}
+
 void Networking::do_callbacks_message(Common_Message *msg)
 {
     if (msg->has_network() || msg->has_network_old()) {
@@ -682,7 +703,7 @@ 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, std::vector<uint32_t> *custom_broadcasts)
+Networking::Networking(CSteamID id, uint32 appid, uint16 port, std::set<uint32_t> *custom_broadcasts)
 {
     run_at_startup();
     tcp_port = udp_port = port;
@@ -690,8 +711,9 @@ Networking::Networking(CSteamID id, uint32 appid, uint16 port, std::vector<uint3
     alive = true;
     last_run = std::chrono::high_resolution_clock::now();
     this->appid = appid;
-    if (custom_broadcasts)
-        this->custom_broadcasts = *custom_broadcasts;
+    if (custom_broadcasts) {
+        std::transform(custom_broadcasts->begin(), custom_broadcasts->end(), std::back_inserter(this->custom_broadcasts), [](uint32 ip) {return htonl(ip);});
+    }
 
     sock_t sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
     PRINT_DEBUG("UDP socket: %u\n", sock);

dll/network.h

@@ -121,7 +121,10 @@ class Networking {
 
     Common_Message create_announce(bool request);
 public:
-    Networking(CSteamID id, uint32 appid, uint16 port, std::vector<uint32_t> *custom_broadcasts);
+    //NOTE: for all functions ips/ports are passed/returned in host byte order
+    //ex: 127.0.0.1 should be passed as 0x7F000001
+    static std::set<uint32> resolve_ip(std::string dns);
+    Networking(CSteamID id, uint32 appid, uint16 port, std::set<uint32_t> *custom_broadcasts);
     void addListenId(CSteamID id);
     void setAppID(uint32 appid);
     void Run();

dll/steam_client.cpp

@@ -38,6 +38,19 @@ static void network_thread(Networking *network)
     }
 }
 
+static void load_custom_broadcasts(std::string broadcasts_filepath, std::set<uint32> &custom_broadcasts)
+{
+    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)) {
+            std::set<uint32> ips = Networking::resolve_ip(line);
+            custom_broadcasts.insert(ips.begin(), ips.end());
+        }
+    }
+}
+
 Steam_Client::Steam_Client()
 {
     std::string program_path = Local_Storage::get_program_path(), save_path = Local_Storage::get_user_appdata_path();;
@@ -124,47 +137,9 @@ Steam_Client::Steam_Client()
     }
 
     // Custom broadcasts
-    std::vector<uint32_t> custom_broadcasts;
-    std::string broadcasts_filepath = local_storage->get_global_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)) {
-            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.push_back(current_ip);
-                }
-                catch(std::invalid_argument ex)
-                {
-                    
-                }
-            }
-        }
-    }
+    std::set<uint32> custom_broadcasts;
+    load_custom_broadcasts(local_storage->get_global_settings_path() + "custom_broadcasts.txt", custom_broadcasts);
+    load_custom_broadcasts(Local_Storage::get_game_settings_path() + "custom_broadcasts.txt", custom_broadcasts);
 
     // Acount name
     char name[32] = {};

files_example/steam_settings.EXAMPLE/custom_broadcasts.EXAMPLE.txt

@@ -0,0 +1,5 @@
+192.168.3.255
+127.8.9.10
+192.168.66.99
+192.168.7.99
+removethis.test.domain.com