bugzilla bug #5273

exploit resolved, we're now disallowing forwardmove of -128 and vice versa

Thanks, devhc!



git-svn-id: svn://svn.icculus.org/quake3/trunk@2214 edf5b092-35ff-0310-97b2-ce42778d08ea

code/qcommon/msg.c

@@ -715,8 +715,14 @@ void MSG_ReadDeltaUsercmd( msg_t *msg, usercmd_t *from, usercmd_t *to ) {
 	to->angles[1] = MSG_ReadDelta( msg, from->angles[1], 16);
 	to->angles[2] = MSG_ReadDelta( msg, from->angles[2], 16);
 	to->forwardmove = MSG_ReadDelta( msg, from->forwardmove, 8);
+	if( to->forwardmove == -128 )
+		to->forwardmove = -127;
 	to->rightmove = MSG_ReadDelta( msg, from->rightmove, 8);
+	if( to->rightmove == -128 )
+		to->rightmove = -127;
 	to->upmove = MSG_ReadDelta( msg, from->upmove, 8);
+	if( to->upmove == -128 )
+		to->upmove = -127;
 	to->buttons = MSG_ReadDelta( msg, from->buttons, 16);
 	to->weapon = MSG_ReadDelta( msg, from->weapon, 8);
 }
@@ -776,8 +782,14 @@ void MSG_ReadDeltaUsercmdKey( msg_t *msg, int key, usercmd_t *from, usercmd_t *t
 		to->angles[1] = MSG_ReadDeltaKey( msg, key, from->angles[1], 16);
 		to->angles[2] = MSG_ReadDeltaKey( msg, key, from->angles[2], 16);
 		to->forwardmove = MSG_ReadDeltaKey( msg, key, from->forwardmove, 8);
+		if( to->forwardmove == -128 )
+			to->forwardmove = -127;
 		to->rightmove = MSG_ReadDeltaKey( msg, key, from->rightmove, 8);
+		if( to->rightmove == -128 )
+			to->rightmove = -127;
 		to->upmove = MSG_ReadDeltaKey( msg, key, from->upmove, 8);
+		if( to->upmove == -128 )
+			to->upmove = -127;
 		to->buttons = MSG_ReadDeltaKey( msg, key, from->buttons, 16);
 		to->weapon = MSG_ReadDeltaKey( msg, key, from->weapon, 8);
 	} else {