char: 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

6 files changed, 100 insertions, 3 deletions

diff --git a/src/Makefile.am b/src/Makefile.am
index 7ed1330..896fb9b 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -1,6 +1,10 @@
 AUTOMAKE_OPTIONS = subdir-objects
 
-CHAR_SRC = char/init.c \
+CHAR_SRC = char/char.c \
+    char/char.h \
+    char/config.c \
+    char/config.h \
+    char/init.c \
     common/interfaces.c \
     common/interfaces.h
 
diff --git a/src/char/char.c b/src/char/char.c
new file mode 100644
index 0000000..fc9dd2d
--- /dev/null
+++ b/src/char/char.c
@@ -0,0 +1,32 @@
+// Copyright (c) Copyright (c) Hercules Dev Team, licensed under GNU GPL.
+// Copyright (c) 2014 Evol developers
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "../../../common/HPMi.h"
+#include "../../../common/malloc.h"
+#include "../../../common/mmo.h"
+#include "../../../common/socket.h"
+#include "../../../common/strlib.h"
+#include "../../../char/char.h"
+
+#include "char/char.h"
+#include "char/config.h"
+
+void echar_parse_char_login_map_server(int *fd)
+{
+    if (!inter_server_ip)
+        return;
+
+    const uint32 ipl = session[*fd]->client_addr;
+
+    const char *const ip = ip2str(ipl, NULL);
+    if (!strstr(inter_server_ip, ip))
+    {
+        hookStop();
+        ShowNotice("Connection of the map-server from ip %s REFUSED.\n", ip);
+        chr->login_map_server_ack(*fd, 3);
+    }
+}
diff --git a/src/char/char.h b/src/char/char.h
new file mode 100644
index 0000000..f1be161
--- /dev/null
+++ b/src/char/char.h
@@ -0,0 +1,9 @@
+// Copyright (c) Copyright (c) Hercules Dev Team, licensed under GNU GPL.
+// Copyright (c) 2014 Evol developers
+
+#ifndef EVOL_CHAR_CHAR
+#define EVOL_CHAR_CHAR
+
+void echar_parse_char_login_map_server(int *fd);
+
+#endif  // EVOL_CHAR_CHAR
diff --git a/src/char/config.c b/src/char/config.c
new file mode 100644
index 0000000..5eefbc1
--- /dev/null
+++ b/src/char/config.c
@@ -0,0 +1,35 @@
+// Copyright (c) Copyright (c) Hercules Dev Team, licensed under GNU GPL.
+// Copyright (c) 2014 Evol developers
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "../../../common/HPMi.h"
+#include "../../../common/malloc.h"
+#include "../../../common/mmo.h"
+#include "../../../common/socket.h"
+#include "../../../common/strlib.h"
+
+#include "char/config.h"
+
+char *inter_server_ip = NULL;
+
+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 (inter_server_ip)
+        aFree(inter_server_ip);
+}
diff --git a/src/char/config.h b/src/char/config.h
new file mode 100644
index 0000000..930c293
--- /dev/null
+++ b/src/char/config.h
@@ -0,0 +1,12 @@
+// Copyright (c) Copyright (c) Hercules Dev Team, licensed under GNU GPL.
+// Copyright (c) 2014 Evol developers
+
+#ifndef EVOL_CHAR_CONFIG
+#define EVOL_CHAR_CONFIG
+
+void config_final(void);
+void config_inter_server_ip(const char *val);
+
+extern char *inter_server_ip;
+
+#endif  // EVOL_CHAR_CONFIG
diff --git a/src/char/init.c b/src/char/init.c
index bfe7097..639c19b 100644
--- a/src/char/init.c
+++ b/src/char/init.c
@@ -27,6 +27,8 @@
 #include "../../../char/mapif.h"
 
 #include "common/interfaces.h"
+#include "char/char.h"
+#include "char/config.h"
 
 #include "../../../common/HPMDataCheck.h" /* should always be the last file included! (if you don't make it last, it'll intentionally break compile time) */
 
@@ -40,8 +42,6 @@ HPExport struct hplugin_info pinfo =
 
 HPExport void plugin_init (void)
 {
-    interfaces_init_common();
-
     chr = GET_SYMBOL("chr");
     geoip = GET_SYMBOL("geoip");
     inter_auction = GET_SYMBOL("inter_auction");
@@ -57,10 +57,15 @@ HPExport void plugin_init (void)
     inter = GET_SYMBOL("inter");
     loginif = GET_SYMBOL("loginif");
     mapif = GET_SYMBOL("mapif");
+
+    addHookPre("chr->parse_char_login_map_server", echar_parse_char_login_map_server);
 }
 
 HPExport void server_preinit (void)
 {
+    interfaces_init_common();
+
+    addCharInterConf("inter_server_ip", config_inter_server_ip);
 }
 
 HPExport void server_online (void)