Added IP address reply packet 0x20C (len 10)

This is sent along with char name replies to GMs able to recieve hack
notices. Unfortunately,it locks up clients that do not support this packet.
Must coordinate to get this added to TMW 0.5 release and mana. Until then,
code is commented out in clif.c(grep for MD5_ip)
Packet structure:
  0x20C (len 2)
  AccountID of character name was requested for (len 4)
  IP address of requested char in network byte order (len 4)

Config option in battle_athena.conf:
gm_mask_ips (boolean) - When set to 1(default) GMs will only see a
hashed/masked IP address.

7 files changed, 39 insertions, 5 deletions

diff --git a/doc/packet_table_en.txt b/doc/packet_table_en.txt
index 5a44a66..52dcd0e 100644
--- a/doc/packet_table_en.txt
+++ b/doc/packet_table_en.txt
@@ -1315,7 +1315,8 @@ S 0204 <?>.16B
 	ログイン要求に付加されるパケット。16バイトは固定？
 S 020B <?>.17B
 	キャラクタサーバ接続要求0065に付加されるパケット。1+0204の16バイトで17バイト？
-
+S 020C <account id>.L, <ip address>.L
+        IP address in network byte order for a player account in response to a charname request [MadCamel]
 
 パケット長の追加。019e〜01aaが増えてるので、0190〜を切り抜き
 added packet lenth. 019e-01aa is a new, so here is a packet length table from 0190.
diff --git a/src/map/Makefile b/src/map/Makefile
index eb2f5fd..a1a4381 100644
--- a/src/map/Makefile
+++ b/src/map/Makefile
@@ -7,7 +7,7 @@ txt: obj map-server
 obj:
 	mkdir obj
 
-COMMON_OBJ = ../common/core.o ../common/socket.o ../common/timer.o ../common/grfio.o ../common/db.o ../common/lock.o ../common/nullpo.o ../common/malloc.o ../common/mt_rand.o
+COMMON_OBJ = ../common/core.o ../common/socket.o ../common/timer.o ../common/grfio.o ../common/db.o ../common/lock.o ../common/nullpo.o ../common/malloc.o ../common/mt_rand.o ../common/md5calc.o
 LIBS = -lz -lm
 
 map-server: obj/tmw.o obj/magic-interpreter-lexer.o obj/magic-interpreter-parser.o obj/magic-interpreter-base.o obj/magic-expr.o obj/magic-stmt.o obj/magic.o obj/map.o obj/chrif.o obj/clif.o obj/pc.o obj/npc.o obj/chat.o obj/path.o obj/itemdb.o obj/mob.o obj/script.o obj/storage.o obj/skill.o obj/skill-pools.o obj/atcommand.o obj/battle.o obj/intif.o obj/trade.o obj/party.o obj/guild.o $(COMMON_OBJ)
diff --git a/src/map/battle.c b/src/map/battle.c
index ea284a5..9d868c7 100644
--- a/src/map/battle.c
+++ b/src/map/battle.c
@@ -5657,6 +5657,7 @@ int battle_config_read (const char *cfgName)
         battle_config.packet_spam_flood = 30;
         battle_config.packet_spam_kick = 1;
 
+        battle_config.mask_ip_gms = 1;
     }
 
     fp = fopen_ (cfgName, "r");
@@ -6107,7 +6108,9 @@ int battle_config_read (const char *cfgName)
             {
             "packet_spam_flood", &battle_config.packet_spam_flood},
             {
-            "packet_spam_kick", &battle_config.packet_spam_kick}
+            "packet_spam_kick", &battle_config.packet_spam_kick},
+            {
+            "mask_ip_gms", &battle_config.mask_ip_gms}
         };
 
         if (line[0] == '/' && line[1] == '/')
@@ -6264,6 +6267,11 @@ int battle_config_read (const char *cfgName)
         else if (battle_config.packet_spam_kick > 1)
             battle_config.packet_spam_kick = 1;
 
+        if (battle_config.mask_ip_gms < 0)
+            battle_config.mask_ip_gms = 0;
+        else if (battle_config.mask_ip_gms > 1)
+            battle_config.mask_ip_gms = 1;
+
         // at least 1 client must be accepted
         if ((battle_config.packet_ver_flag & 63) == 0)  // added by [Yor]
             battle_config.packet_ver_flag = 63; // accept all clients
diff --git a/src/map/battle.h b/src/map/battle.h
index b155109..44016a5 100644
--- a/src/map/battle.h
+++ b/src/map/battle.h
@@ -344,8 +344,9 @@ extern struct Battle_Config
     int  packet_spam_flood;
     int  packet_spam_kick;
 
-    int  drop_pickup_safety_zone;   // [Fate] Max. distance to an object dropped by a kill by self in which dropsteal protection works
+    int  mask_ip_gms;
 
+    int  drop_pickup_safety_zone;   // [Fate] Max. distance to an object dropped by a kill by self in which dropsteal protection works
     int  itemheal_regeneration_factor;  // [Fate] itemheal speed factor
 
 } battle_config;
diff --git a/src/map/chrif.c b/src/map/chrif.c
index 1f5673a..fd2398b 100644
--- a/src/map/chrif.c
+++ b/src/map/chrif.c
@@ -65,6 +65,11 @@ void chrif_setpasswd (char *pwd)
     passwd[sizeof(passwd)-1] = '\0';
 }
 
+char *chrif_getpasswd ()
+{
+    return passwd;
+}
+
 /*==========================================
  *
  *------------------------------------------
diff --git a/src/map/chrif.h b/src/map/chrif.h
index c3ae80d..3515463 100644
--- a/src/map/chrif.h
+++ b/src/map/chrif.h
@@ -4,6 +4,8 @@
 
 void chrif_setuserid (char *);
 void chrif_setpasswd (char *);
+char *chrif_getpasswd ();
+
 void chrif_setip (char *);
 void chrif_setport (int);
 
diff --git a/src/map/clif.c b/src/map/clif.c
index 3cd01ee..1a1acf9 100644
--- a/src/map/clif.c
+++ b/src/map/clif.c
@@ -23,6 +23,7 @@
 #include "malloc.h"
 #include "version.h"
 #include "nullpo.h"
+#include "md5calc.h"
 
 #include "atcommand.h"
 #include "battle.h"
@@ -93,7 +94,7 @@ static const int packet_len_table[0x220] = {
     30, 8, 34, 14, 2, 6, 26, 2, 28, 81, 6, 10, 26, 2, -1, -1,
     -1, -1, 20, 10, 32, 9, 34, 14, 2, 6, 48, 56, -1, 4, 5, 10,
 //#0x200
-    26, -1, 26, 10, 18, 26, 11, 34, 14, 36, 10, 19, 0, -1, 24, 0,
+    26, -1, 26, 10, 18, 26, 11, 34, 14, 36, 10, 19, 10, -1, 24, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 };
 
@@ -7107,6 +7108,22 @@ void clif_parse_GetCharNameRequest (int fd, struct map_session_data *sd)
 
             }
 
+#if 0
+            if (pc_isGM(sd) > battle_config.hack_info_GM_level)
+            {
+                in_addr_t ip = ssd->ip;
+                WFIFOW (fd, 0) = 0x20C;
+
+                // Mask the IP using the char-server password
+                if (battle_config.mask_ip_gms)
+                    ip = MD5_ip(chrif_getpasswd (), ssd->ip);
+
+                WFIFOL (fd, 2) = account_id;
+                WFIFOL (fd, 6) = ip;
+                WFIFOSET (fd, packet_len_table[0x20C]);
+             }
+#endif
+
         }
             break;
         case BL_NPC: