login: add ability to filter inter servers connections by ip

New config option: inter_server_ip
Example:
    inter_server_ip 127.0.0.1,127.0.0.2

5 files changed, 34 insertions, 0 deletions

diff --git a/src/login/config.c b/src/login/config.c
index d53cd17..d6ea4bd 100644
--- a/src/login/config.c
+++ b/src/login/config.c
@@ -14,14 +14,30 @@
 #include "login/config.h"
 
 char *update_server = NULL;
+char *inter_server_ip = NULL;
 
 void config_update_server(const char *val)
 {
     update_server = aStrdup(val);
 }
 
+void config_inter_server_ip(const char *val)
+{
+    char buf[1000];
+
+    if (strlen(val) > 900)
+        return;
+
+    strcpy(buf, ",");
+    strcat(buf, val);
+    strcat(buf, ",");
+    inter_server_ip = aStrdup(buf);
+}
+
 void config_final(void)
 {
     if (update_server)
         aFree(update_server);
+    if (inter_server_ip)
+        aFree(inter_server_ip);
 }
diff --git a/src/login/config.h b/src/login/config.h
index a491e1e..ad63371 100644
--- a/src/login/config.h
+++ b/src/login/config.h
@@ -6,7 +6,9 @@
 
 void config_update_server(const char *val);
 void config_final(void);
+void config_inter_server_ip(const char *val);
 
 extern char *update_server;
+extern char *inter_server_ip;
 
 #endif  // EVOL_LOGIN_CONFIG
diff --git a/src/login/init.c b/src/login/init.c
index 30cce3a..c781588 100644
--- a/src/login/init.c
+++ b/src/login/init.c
@@ -35,12 +35,14 @@ HPExport void plugin_init (void)
     addPacket(0x7530, 22, login_parse_version, hpParse_Login);
     addPacket(0x027c, 95, elogin_parse_client_login2, hpParse_Login);
     addHookPre("login->parse_client_login", elogin_parse_client_login_pre);
+    addHookPre("login->parse_request_connection", elogin_parse_request_connection);
 }
 
 HPExport void server_preinit (void)
 {
     iMalloc = GET_SYMBOL("iMalloc");
     addLoginConf("update_server", config_update_server);
+    addLoginConf("inter_server_ip", config_inter_server_ip);
 }
 
 HPExport void server_online (void)
diff --git a/src/login/parse.c b/src/login/parse.c
index ba4efbd..9f1ffcb 100644
--- a/src/login/parse.c
+++ b/src/login/parse.c
@@ -13,6 +13,7 @@
 #include "../../../login/account.h"
 #include "../../../login/login.h"
 
+#include "login/config.h"
 #include "login/parse.h"
 #include "login/send.h"
 
@@ -134,3 +135,15 @@ void elogin_parse_client_login2(int fd)
 
     return;
 }
+
+void elogin_parse_request_connection(int *fd, struct login_session_data* sd, const char *const ip)
+{
+    if (!inter_server_ip || !ip)
+        return;
+    if (!strstr(inter_server_ip, ip))
+    {
+        hookStop();
+        login->char_server_connection_status(*fd, sd, 3);
+        ShowNotice("Connection of the char-server from ip %s REFUSED.\n", ip);
+    }
+}
diff --git a/src/login/parse.h b/src/login/parse.h
index 01a584a..44cb1b1 100644
--- a/src/login/parse.h
+++ b/src/login/parse.h
@@ -7,5 +7,6 @@
 void login_parse_version(int fd);
 int elogin_parse_client_login_pre(int *fd, struct login_session_data* sd, const char *const ip);
 void elogin_parse_client_login2(int fd);
+void elogin_parse_request_connection(int *fd, struct login_session_data* sd, const char *const ip);
 
 #endif  // EVOL_LOGIN_PARSE