From 4e406f3ed6e6f8b2b8434a366a5e54c8f7186f45 Mon Sep 17 00:00:00 2001
From: glighta <glighta@54d463be-8e91-2dee-dedb-b68131a5f0ec>
Date: Wed, 14 Nov 2012 02:26:00 +0000
Subject: Following r16914 -fix @zeny for negative amout bugreport:6886,
 bugreport:6895 bugreport:6888 -fix @cash,@points command display result
 -enforce bound chk for both

git-svn-id: https://rathena.svn.sourceforge.net/svnroot/rathena/trunk@16924 54d463be-8e91-2dee-dedb-b68131a5f0ec
---
 src/map/pc.c | 21 ++++++++++++++++-----
 1 file changed, 16 insertions(+), 5 deletions(-)

(limited to 'src/map/pc.c')

diff --git a/src/map/pc.c b/src/map/pc.c
index 986087484..b54b88ae2 100644
--- a/src/map/pc.c
+++ b/src/map/pc.c
@@ -3590,6 +3590,7 @@ int pc_payzeny(struct map_session_data *sd,int zeny, enum e_log_pick_type type,
 {
 	nullpo_ret(sd);
 
+	zeny = cap_value(zeny,-MAX_ZENY,MAX_ZENY); //prevent command UB
 	if( zeny < 0 )
 	{
 		ShowError("pc_payzeny: Paying negative Zeny (zeny=%d, account_id=%d, char_id=%d).\n", zeny, sd->status.account_id, sd->status.char_id);
@@ -3616,16 +3617,17 @@ int pc_payzeny(struct map_session_data *sd,int zeny, enum e_log_pick_type type,
  * Cash Shop
  *------------------------------------------*/
 
-void pc_paycash(struct map_session_data *sd, int price, int points)
+int pc_paycash(struct map_session_data *sd, int price, int points)
 {
 	char output[128];
 	int cash;
 	nullpo_retv(sd);
 
+	points = cap_value(points,-MAX_ZENY,MAX_ZENY); //prevent command UB
 	if( price < 0 || points < 0 )
 	{
 		ShowError("pc_paycash: Paying negative points (price=%d, points=%d, account_id=%d, char_id=%d).\n", price, points, sd->status.account_id, sd->status.char_id);
-		return;
+		return -2;
 	}
 
 	if( points > price )
@@ -3639,7 +3641,7 @@ void pc_paycash(struct map_session_data *sd, int price, int points)
 	if( sd->cashPoints < cash || sd->kafraPoints < points )
 	{
 		ShowError("pc_paycash: Not enough points (cash=%d, kafra=%d) to cover the price (cash=%d, kafra=%d) (account_id=%d, char_id=%d).\n", sd->cashPoints, sd->kafraPoints, cash, points, sd->status.account_id, sd->status.char_id);
-		return;
+		return -1;
 	}
 
 	pc_setaccountreg(sd, "#CASHPOINTS", sd->cashPoints-cash);
@@ -3650,13 +3652,16 @@ void pc_paycash(struct map_session_data *sd, int price, int points)
 		sprintf(output, msg_txt(504), points, cash, sd->kafraPoints, sd->cashPoints);
 		clif_disp_onlyself(sd, output, strlen(output));
 	}
+	return cash+points;
 }
 
-void pc_getcash(struct map_session_data *sd, int cash, int points)
+int pc_getcash(struct map_session_data *sd, int cash, int points)
 {
 	char output[128];
 	nullpo_retv(sd);
 
+	cash = cap_value(cash,-MAX_ZENY,MAX_ZENY); //prevent command UB
+	points = cap_value(points,-MAX_ZENY,MAX_ZENY); //prevent command UB
 	if( cash > 0 )
 	{
 		if( cash > MAX_ZENY-sd->cashPoints )
@@ -3672,10 +3677,12 @@ void pc_getcash(struct map_session_data *sd, int cash, int points)
 			sprintf(output, msg_txt(505), cash, sd->cashPoints);
 			clif_disp_onlyself(sd, output, strlen(output));
 		}
+		return cash;
 	}
 	else if( cash < 0 )
 	{
 		ShowError("pc_getcash: Obtaining negative cash points (cash=%d, account_id=%d, char_id=%d).\n", cash, sd->status.account_id, sd->status.char_id);
+		return -1;
 	}
 
 	if( points > 0 )
@@ -3693,11 +3700,14 @@ void pc_getcash(struct map_session_data *sd, int cash, int points)
 			sprintf(output, msg_txt(506), points, sd->kafraPoints);
 			clif_disp_onlyself(sd, output, strlen(output));
 		}
+		return points;
 	}
 	else if( points < 0 )
 	{
 		ShowError("pc_getcash: Obtaining negative kafra points (points=%d, account_id=%d, char_id=%d).\n", points, sd->status.account_id, sd->status.char_id);
+		return -1;
 	}
+	return -2; //shouldn't happen but jsut in case
 }
 
 /*==========================================
@@ -3708,6 +3718,7 @@ int pc_getzeny(struct map_session_data *sd,int zeny, enum e_log_pick_type type,
 {
 	nullpo_ret(sd);
 
+	zeny = cap_value(zeny,-MAX_ZENY,MAX_ZENY); //prevent command UB
 	if( zeny < 0 )
 	{
 		ShowError("pc_getzeny: Obtaining negative Zeny (zeny=%d, account_id=%d, char_id=%d).\n", zeny, sd->status.account_id, sd->status.char_id);
@@ -3720,7 +3731,7 @@ int pc_getzeny(struct map_session_data *sd,int zeny, enum e_log_pick_type type,
 	sd->status.zeny += zeny;
 	clif_updatestatus(sd,SP_ZENY);
 
-	if(!sd) tsd = sd;
+	if(!tsd) tsd = sd;
 	log_zeny(sd, type, tsd, zeny);
 	if( zeny > 0 && sd->state.showzeny ) {
 		char output[255];
-- 
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