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-rw-r--r--Changelog-Trunk.txt5
-rw-r--r--src/map/clif.c88
-rw-r--r--src/map/clif.h8
3 files changed, 54 insertions, 47 deletions
diff --git a/Changelog-Trunk.txt b/Changelog-Trunk.txt
index 4fbb1343d..15f477deb 100644
--- a/Changelog-Trunk.txt
+++ b/Changelog-Trunk.txt
@@ -1,5 +1,10 @@
Date Added
+2011/10/16
+ * Fixed public/guild chat message packets sending strings without zero-termination causing recent clients to display trailing junk on such messages (bugreport:5068). [Ai4rei]
+ - Changed memcpy to safestrncpy in message packets where overlong messages are truncated (thus loose zero-termination).
+ - Replaced dynamic allocation in clif_guild_message with buffer from stack.
+ - Fixed clif_disp_message not checking whether the message fits into provided buffer.
2011/10/15
* Some readme clean-ups (related r14711). [Ai4rei]
- Normalized whitespace and made the html files validate properly.
diff --git a/src/map/clif.c b/src/map/clif.c
index e83db8d4f..7b2a97006 100644
--- a/src/map/clif.c
+++ b/src/map/clif.c
@@ -5028,7 +5028,7 @@ void clif_GlobalMessage(struct block_list* bl, const char* message)
WBUFW(buf,0)=0x8d;
WBUFW(buf,2)=len+8;
WBUFL(buf,4)=bl->id;
- strncpy((char *) WBUFP(buf,8),message,len);
+ safestrncpy((char *) WBUFP(buf,8),message,len);
clif_send((unsigned char *) buf,WBUFW(buf,2),bl,ALL_CLIENT);
}
@@ -5037,7 +5037,7 @@ void clif_GlobalMessage(struct block_list* bl, const char* message)
*------------------------------------------*/
void clif_MainChatMessage(const char* message)
{
- char buf[200];
+ uint8 buf[200];
int len;
if(!message)
@@ -5051,8 +5051,8 @@ void clif_MainChatMessage(const char* message)
WBUFW(buf,0)=0x8d;
WBUFW(buf,2)=len+8;
WBUFL(buf,4)=0;
- strncpy((char *) WBUFP(buf,8),message,len);
- clif_send((unsigned char *) buf,WBUFW(buf,2),NULL,CHAT_MAINCHAT);
+ safestrncpy((char *) WBUFP(buf,8),message,len);
+ clif_send(buf,WBUFW(buf,2),NULL,CHAT_MAINCHAT);
}
/*==========================================
@@ -7147,27 +7147,33 @@ void clif_guild_expulsionlist(struct map_session_data* sd)
WFIFOSET(fd,WFIFOW(fd,2));
}
-/*==========================================
- * ギルド会話
- *------------------------------------------*/
-int clif_guild_message(struct guild *g,int account_id,const char *mes,int len)
-{
+
+/// Notification of a guild chat message (ZC_GUILD_CHAT)
+/// 017f <packet len>.W <message>.?B
+void clif_guild_message(struct guild *g,int account_id,const char *mes,int len)
+{// TODO: account_id is not used, candidate for deletion? [Ai4rei]
struct map_session_data *sd;
- unsigned char *buf;
+ uint8 buf[256];
- buf = (unsigned char*)aMallocA((len + 4)*sizeof(unsigned char));
+ if( len == 0 )
+ {
+ return;
+ }
+ else if( len > sizeof(buf)-5 )
+ {
+ ShowWarning("clif_guild_message: Truncated message '%s' (len=%d, max=%d, guild_id=%d).\n", mes, len, sizeof(buf)-5, g->guild_id);
+ len = sizeof(buf)-5;
+ }
WBUFW(buf, 0) = 0x17f;
- WBUFW(buf, 2) = len + 4;
- memcpy(WBUFP(buf,4), mes, len);
+ WBUFW(buf, 2) = len + 5;
+ safestrncpy((char*)WBUFP(buf,4), mes, len+1);
if ((sd = guild_getavailablesd(g)) != NULL)
clif_send(buf, WBUFW(buf,2), &sd->bl, GUILD_NOBG);
+}
- if(buf) aFree(buf);
- return 0;
-}
/*==========================================
* ギルドスキル割り振り通知
*------------------------------------------*/
@@ -7409,18 +7415,9 @@ void clif_parse_ReqMarriage(int fd, struct map_session_data *sd)
/*==========================================
*
*------------------------------------------*/
-int clif_disp_onlyself(struct map_session_data *sd, const char *mes, int len)
+void clif_disp_onlyself(struct map_session_data *sd, const char *mes, int len)
{
- int fd;
- nullpo_ret(sd);
- fd = sd->fd;
- if (!fd || !len) return 0; //Disconnected player.
- WFIFOHEAD(fd, len+5);
- WFIFOW(fd, 0) = 0x17f;
- WFIFOW(fd, 2) = len + 5;
- memcpy(WFIFOP(fd,4), mes, len);
- WFIFOSET(fd, WFIFOW(fd,2));
- return 1;
+ clif_disp_message(&sd->bl, mes, len, SELF);
}
/*==========================================
@@ -7428,13 +7425,22 @@ int clif_disp_onlyself(struct map_session_data *sd, const char *mes, int len)
*------------------------------------------*/
void clif_disp_message(struct block_list* src, const char* mes, int len, enum send_target target)
{
- unsigned char buf[1024];
- if (!len) return;
+ unsigned char buf[256];
+
+ if( len == 0 )
+ {
+ return;
+ }
+ else if( len > sizeof(buf)-5 )
+ {
+ ShowWarning("clif_disp_message: Truncated message '%s' (len=%d, max=%d, aid=%d).\n", mes, len, sizeof(buf)-5, src->id);
+ len = sizeof(buf)-5;
+ }
+
WBUFW(buf, 0) = 0x17f;
WBUFW(buf, 2) = len + 5;
- memcpy(WBUFP(buf,4), mes, len);
+ safestrncpy((char*)WBUFP(buf,4), mes, len+1);
clif_send(buf, WBUFW(buf,2), src, target);
- return;
}
/*==========================================
@@ -7657,12 +7663,12 @@ int clif_messagecolor(struct block_list* bl, unsigned long color, const char* ms
}
// messages (from mobs/npcs) [Valaris]
-int clif_message(struct block_list* bl, const char* msg)
+void clif_message(struct block_list* bl, const char* msg)
{
unsigned short msg_len = strlen(msg) + 1;
uint8 buf[256];
- nullpo_ret(bl);
+ nullpo_retv(bl);
if( msg_len > sizeof(buf)-8 )
{
@@ -7673,11 +7679,9 @@ int clif_message(struct block_list* bl, const char* msg)
WBUFW(buf,0) = 0x8d;
WBUFW(buf,2) = msg_len + 8;
WBUFL(buf,4) = bl->id;
- memcpy(WBUFP(buf,8), msg, msg_len);
+ safestrncpy((char*)WBUFP(buf,8), msg, msg_len);
clif_send(buf, WBUFW(buf,2), bl, AREA_CHAT_WOC);
-
- return 0;
}
// refresh the client's screen, getting rid of any effects
@@ -7951,29 +7955,27 @@ void clif_slide(struct block_list *bl, int x, int y)
/*------------------------------------------
* @me command by lordalfa, rewritten implementation by Skotlex
*------------------------------------------*/
-int clif_disp_overhead(struct map_session_data *sd, const char* mes)
+void clif_disp_overhead(struct map_session_data *sd, const char* mes)
{
unsigned char buf[256]; //This should be more than sufficient, the theorical max is CHAT_SIZE + 8 (pads and extra inserted crap)
int len_mes = strlen(mes)+1; //Account for \0
- if (len_mes + 8 >= 256) {
+ if (len_mes > sizeof(buf)-8) {
ShowError("clif_disp_overhead: Message too long (length %d)\n", len_mes);
- len_mes = 247; //Trunk it to avoid problems.
+ len_mes = sizeof(buf)-8; //Trunk it to avoid problems.
}
// send message to others
WBUFW(buf,0) = 0x8d;
WBUFW(buf,2) = len_mes + 8; // len of message + 8 (command+len+id)
WBUFL(buf,4) = sd->bl.id;
- memcpy(WBUFP(buf,8), mes, len_mes);
+ safestrncpy((char*)WBUFP(buf,8), mes, len_mes);
clif_send(buf, WBUFW(buf,2), &sd->bl, AREA_CHAT_WOC);
// send back message to the speaker
WBUFW(buf,0) = 0x8e;
WBUFW(buf, 2) = len_mes + 4;
- memcpy(WBUFP(buf,4), mes, len_mes);
+ safestrncpy((char*)WBUFP(buf,4), mes, len_mes);
clif_send(buf, WBUFW(buf,2), &sd->bl, SELF);
-
- return 0;
}
/*==========================
diff --git a/src/map/clif.h b/src/map/clif.h
index f68204361..e34ff55a0 100644
--- a/src/map/clif.h
+++ b/src/map/clif.h
@@ -437,7 +437,7 @@ int clif_guild_memberpositionchanged(struct guild *g,int idx);
int clif_guild_emblem(struct map_session_data *sd,struct guild *g);
void clif_guild_emblem_area(struct block_list* bl);
int clif_guild_notice(struct map_session_data *sd,struct guild *g);
-int clif_guild_message(struct guild *g,int account_id,const char *mes,int len);
+void clif_guild_message(struct guild *g,int account_id,const char *mes,int len);
int clif_guild_skillup(struct map_session_data *sd,int skill_num,int lv);
int clif_guild_reqalliance(struct map_session_data *sd,int account_id,const char *name);
int clif_guild_allianceack(struct map_session_data *sd,int flag);
@@ -468,7 +468,7 @@ int clif_font(struct map_session_data *sd);
// atcommand
int clif_displaymessage(const int fd,const char* mes);
-int clif_disp_onlyself(struct map_session_data *sd,const char *mes,int len);
+void clif_disp_onlyself(struct map_session_data *sd,const char *mes,int len);
void clif_disp_message(struct block_list* src, const char* mes, int len, enum send_target target);
int clif_broadcast(struct block_list *bl, const char* mes, int len, int type, enum send_target target);
void clif_MainChatMessage(const char* message); //luzza
@@ -502,7 +502,7 @@ void clif_weather(int m); // [Valaris]
int clif_specialeffect(struct block_list* bl, int type, enum send_target target); // special effects [Valaris]
void clif_specialeffect_single(struct block_list* bl, int type, int fd);
int clif_messagecolor(struct block_list* bl, unsigned long color, const char* msg); // Mob/Npc color talk [SnakeDrak]
-int clif_message(struct block_list *bl, const char* msg); // messages (from mobs/npcs) [Valaris]
+void clif_message(struct block_list *bl, const char* msg); // messages (from mobs/npcs) [Valaris]
int clif_GM_kickack(struct map_session_data *sd,int id);
void clif_GM_kick(struct map_session_data *sd,struct map_session_data *tsd);
@@ -510,7 +510,7 @@ void clif_manner_message(struct map_session_data* sd, uint32 type);
void clif_GM_silence(struct map_session_data* sd, struct map_session_data* tsd, uint8 type);
int clif_timedout(struct map_session_data *sd);
-int clif_disp_overhead(struct map_session_data *sd, const char* mes);
+void clif_disp_overhead(struct map_session_data *sd, const char* mes);
void clif_get_weapon_view(struct map_session_data* sd, unsigned short *rhand, unsigned short *lhand);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-20 20:03:46 +0000