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Prevent access to invalid banner in game command

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Michał Janiszewski
2017-04-26 22:40:04 +02:00
committed by Michał Janiszewski
parent ee4e863dc6
commit dd6e040122
1 changed files with 5 additions and 0 deletions
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5
src/openrct2/world/map.c
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@@ -4424,6 +4424,11 @@ void game_command_set_sign_name(sint32* eax, sint32* ebx, sint32* ecx, sint32* e
void game_command_set_sign_style(sint32* eax, sint32* ebx, sint32* ecx, sint32* edx, sint32* esi, sint32* edi, sint32* ebp) {
uint8 bannerId = *ecx & 0xFF;
if (bannerId > countof(gBanners)) {
log_warning("Invalid game command for setting sign style, banner id = %d", bannerId);
*ebx = MONEY32_UNDEFINED;
return;
}
rct_banner *banner = &gBanners[bannerId];
sint32 x = banner->x << 5;
sint32 y = banner->y << 5;