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(svn r26685) -Fix: Tighten parameter bound checks on GSCargoMonitor functions, and return -1 on out-of-bound parameters.

Browse Source
pull/155/head
alberth 10 years ago
parent 6fd3eaa287
commit ee7700ef78
6 changed files with 56 additions and 23 deletions
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8
src/cargomonitor.cpp
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@ -69,7 +69,7 @@ void ClearCargoDeliveryMonitoring(CompanyID company)
* @param keep_monitoring After returning from this call, continue monitoring.
* @return Amount collected since last query/activation for the monitored combination.
*/
static uint32 GetAmount(CargoMonitorMap &monitor_map, CargoMonitorID monitor, bool keep_monitoring)
static int32 GetAmount(CargoMonitorMap &monitor_map, CargoMonitorID monitor, bool keep_monitoring)
{
CargoMonitorMap::iterator iter = monitor_map.find(monitor);
if (iter == monitor_map.end()) {
@ -79,7 +79,7 @@ static uint32 GetAmount(CargoMonitorMap &monitor_map, CargoMonitorID monitor, bo
}
return 0;
} else {
uint32 result = iter->second;
int32 result = iter->second;
iter->second = 0;
if (!keep_monitoring) monitor_map.erase(iter);
return result;
@ -92,7 +92,7 @@ static uint32 GetAmount(CargoMonitorMap &monitor_map, CargoMonitorID monitor, bo
* @param keep_monitoring After returning from this call, continue monitoring.
* @return Amount of delivered cargo for the monitored combination.
*/
uint32 GetDeliveryAmount(CargoMonitorID monitor, bool keep_monitoring)
int32 GetDeliveryAmount(CargoMonitorID monitor, bool keep_monitoring)
{
return GetAmount(_cargo_deliveries, monitor, keep_monitoring);
}
@ -104,7 +104,7 @@ uint32 GetDeliveryAmount(CargoMonitorID monitor, bool keep_monitoring)
* @return Amount of picked up cargo for the monitored combination.
* @note Cargo pick up is counted on final delivery, to prevent users getting credit for picking up cargo without delivering it.
*/
uint32 GetPickupAmount(CargoMonitorID monitor, bool keep_monitoring)
int32 GetPickupAmount(CargoMonitorID monitor, bool keep_monitoring)
{
return GetAmount(_cargo_pickups, monitor, keep_monitoring);
}

7
src/cargomonitor.h
Unescape Escape View File

@ -16,6 +16,7 @@
#include "company_func.h"
#include "industry.h"
#include "town.h"
#include "core/overflowsafe_type.hpp"
#include <map>
struct Station;
@ -31,7 +32,7 @@ struct Station;
typedef uint32 CargoMonitorID; ///< Type of the cargo monitor number.
/** Map type for storing and updating active cargo monitor numbers and their amounts. */
typedef std::map<CargoMonitorID, uint32> CargoMonitorMap;
typedef std::map<CargoMonitorID, OverflowSafeInt32> CargoMonitorMap;
extern CargoMonitorMap _cargo_pickups;
extern CargoMonitorMap _cargo_deliveries;
@ -141,8 +142,8 @@ static inline TownID DecodeMonitorTown(CargoMonitorID num)
void ClearCargoPickupMonitoring(CompanyID company = INVALID_OWNER);
void ClearCargoDeliveryMonitoring(CompanyID company = INVALID_OWNER);
uint32 GetDeliveryAmount(CargoMonitorID monitor, bool keep_monitoring);
uint32 GetPickupAmount(CargoMonitorID monitor, bool keep_monitoring);
int32 GetDeliveryAmount(CargoMonitorID monitor, bool keep_monitoring);
int32 GetPickupAmount(CargoMonitorID monitor, bool keep_monitoring);
void AddCargoDelivery(CargoID cargo_type, CompanyID company, uint32 amount, SourceType src_type, SourceID src, const Station *st);
#endif /* CARGOMONITOR_H */

1
src/core/overflowsafe_type.hpp
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@ -152,5 +152,6 @@ template <class T, int64 T_MAX, int64 T_MIN> inline OverflowSafeInt<T, T_MAX, T_
template <class T, int64 T_MAX, int64 T_MIN> inline OverflowSafeInt<T, T_MAX, T_MIN> operator / (byte a, OverflowSafeInt<T, T_MAX, T_MIN> b) { return (OverflowSafeInt<T, T_MAX, T_MIN>)a / (int)b; }
typedef OverflowSafeInt<int64, INT64_MAX, INT64_MIN> OverflowSafeInt64;
typedef OverflowSafeInt<int32, INT32_MAX, INT32_MIN> OverflowSafeInt32;
#endif /* OVERFLOWSAFE_TYPE_HPP */

4
src/script/api/game_changelog.hpp
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@ -22,6 +22,10 @@
* API additions:
* \li GSStation::GetCargoWaitingFromVia
*
* Other changes:
* \li GSCargoMonitor delivery and pickup monitor functions have improved boundary checking for
* their parameters, and return \c -1 if they are found out of bounds.
*
* \b 1.4.0
*
* API additions:

39
src/script/api/script_cargomonitor.cpp
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@ -10,31 +10,54 @@
/** @file script_cargomonitor.cpp Code to monitor cargo pickup and deliveries by companies. */
#include "../../stdafx.h"
#include "script_cargo.hpp"
#include "script_cargomonitor.hpp"
#include "../../town.h"
#include "../../industry.h"
#include "../../safeguards.h"
/* static */ uint32 ScriptCargoMonitor::GetTownDeliveryAmount(ScriptCompany::CompanyID company, CargoID cargo, TownID town_id, bool keep_monitoring)
/* static */ int32 ScriptCargoMonitor::GetTownDeliveryAmount(ScriptCompany::CompanyID company, CargoID cargo, TownID town_id, bool keep_monitoring)
{
CargoMonitorID monitor = EncodeCargoTownMonitor(static_cast<CompanyID>(company), cargo, town_id);
CompanyID cid = static_cast<CompanyID>(company);
if (cid < OWNER_BEGIN || cid >= MAX_COMPANIES) return -1;
if (!ScriptCargo::IsValidCargo(cargo)) return -1;
if (!::Town::IsValidID(town_id)) return -1;
CargoMonitorID monitor = EncodeCargoTownMonitor(cid, cargo, town_id);
return GetDeliveryAmount(monitor, keep_monitoring);
}
/* static */ uint32 ScriptCargoMonitor::GetIndustryDeliveryAmount(ScriptCompany::CompanyID company, CargoID cargo, IndustryID industry_id, bool keep_monitoring)
/* static */ int32 ScriptCargoMonitor::GetIndustryDeliveryAmount(ScriptCompany::CompanyID company, CargoID cargo, IndustryID industry_id, bool keep_monitoring)
{
CargoMonitorID monitor = EncodeCargoIndustryMonitor(static_cast<CompanyID>(company), cargo, industry_id);
CompanyID cid = static_cast<CompanyID>(company);
if (cid < OWNER_BEGIN || cid >= MAX_COMPANIES) return -1;
if (!ScriptCargo::IsValidCargo(cargo)) return -1;
if (!::Industry::IsValidID(industry_id)) return -1;
CargoMonitorID monitor = EncodeCargoIndustryMonitor(cid, cargo, industry_id);
return GetDeliveryAmount(monitor, keep_monitoring);
}
/* static */ uint32 ScriptCargoMonitor::GetTownPickupAmount(ScriptCompany::CompanyID company, CargoID cargo, TownID town_id, bool keep_monitoring)
/* static */ int32 ScriptCargoMonitor::GetTownPickupAmount(ScriptCompany::CompanyID company, CargoID cargo, TownID town_id, bool keep_monitoring)
{
CargoMonitorID monitor = EncodeCargoTownMonitor(static_cast<CompanyID>(company), cargo, town_id);
CompanyID cid = static_cast<CompanyID>(company);
if (cid < OWNER_BEGIN || cid >= MAX_COMPANIES) return -1;
if (!ScriptCargo::IsValidCargo(cargo)) return -1;
if (!::Town::IsValidID(town_id)) return -1;
CargoMonitorID monitor = EncodeCargoTownMonitor(cid, cargo, town_id);
return GetPickupAmount(monitor, keep_monitoring);
}
/* static */ uint32 ScriptCargoMonitor::GetIndustryPickupAmount(ScriptCompany::CompanyID company, CargoID cargo, IndustryID industry_id, bool keep_monitoring)
/* static */ int32 ScriptCargoMonitor::GetIndustryPickupAmount(ScriptCompany::CompanyID company, CargoID cargo, IndustryID industry_id, bool keep_monitoring)
{
CargoMonitorID monitor = EncodeCargoIndustryMonitor(static_cast<CompanyID>(company), cargo, industry_id);
CompanyID cid = static_cast<CompanyID>(company);
if (cid < OWNER_BEGIN || cid >= MAX_COMPANIES) return -1;
if (!ScriptCargo::IsValidCargo(cargo)) return -1;
if (!::Industry::IsValidID(industry_id)) return -1;
CargoMonitorID monitor = EncodeCargoIndustryMonitor(cid, cargo, industry_id);
return GetPickupAmount(monitor, keep_monitoring);
}

20
src/script/api/script_cargomonitor.hpp
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@ -50,9 +50,10 @@ public:
* @param cargo Cargo type to query.
* @param town_id %Town to query.
* @param keep_monitoring If \c true, the given combination continues to be monitored for the next call. If \c false, monitoring ends.
* @return Amount of delivered cargo of the given cargo type to the given town by the given company since the last call.
* @return Amount of delivered cargo of the given cargo type to the given town by the given company since the last call, or
* \c -1 if a parameter is out-of-bound.
*/
static uint32 GetTownDeliveryAmount(ScriptCompany::CompanyID company, CargoID cargo, TownID town_id, bool keep_monitoring);
static int32 GetTownDeliveryAmount(ScriptCompany::CompanyID company, CargoID cargo, TownID town_id, bool keep_monitoring);
/**
* Get the amount of cargo delivered to an industry by a company since the last query, and update the monitoring state.
@ -60,9 +61,10 @@ public:
* @param cargo Cargo type to query.
* @param industry_id %Industry to query.
* @param keep_monitoring If \c true, the given combination continues to be monitored for the next call. If \c false, monitoring ends.
* @return Amount of delivered cargo of the given cargo type to the given industry by the given company since the last call.
* @return Amount of delivered cargo of the given cargo type to the given industry by the given company since the last call, or
* \c -1 if a parameter is out-of-bound.
*/
static uint32 GetIndustryDeliveryAmount(ScriptCompany::CompanyID company, CargoID cargo, IndustryID industry_id, bool keep_monitoring);
static int32 GetIndustryDeliveryAmount(ScriptCompany::CompanyID company, CargoID cargo, IndustryID industry_id, bool keep_monitoring);
/**
* Get the amount of cargo picked up (and delivered) from a town by a company since the last query, and update the monitoring state.
@ -70,10 +72,11 @@ public:
* @param cargo Cargo type to query.
* @param town_id %Town to query.
* @param keep_monitoring If \c true, the given combination continues to be monitored for the next call. If \c false, monitoring ends.
* @return Amount of picked up cargo of the given cargo type to the given town by the given company since the last call.
* @return Amount of picked up cargo of the given cargo type to the given town by the given company since the last call, or
* \c -1 if a parameter is out-of-bound.
* @note Amounts of picked-up cargo are added during final delivery of it, to prevent users from getting credit for picking up without delivering it.
*/
static uint32 GetTownPickupAmount(ScriptCompany::CompanyID company, CargoID cargo, TownID town_id, bool keep_monitoring);
static int32 GetTownPickupAmount(ScriptCompany::CompanyID company, CargoID cargo, TownID town_id, bool keep_monitoring);
/**
* Get the amount of cargo picked up (and delivered) from an industry by a company since the last query, and update the monitoring state.
@ -81,10 +84,11 @@ public:
* @param cargo Cargo type to query.
* @param industry_id %Industry to query.
* @param keep_monitoring If \c true, the given combination continues to be monitored for the next call. If \c false, monitoring ends.
* @return Amount of picked up cargo of the given cargo type to the given industry by the given company since the last call.
* @return Amount of picked up cargo of the given cargo type to the given industry by the given company since the last call, or
* \c -1 if a parameter is out-of-bound.
* @note Amounts of picked-up cargo are added during final delivery of it, to prevent users from getting credit for picking up without delivering it.
*/
static uint32 GetIndustryPickupAmount(ScriptCompany::CompanyID company, CargoID cargo, IndustryID industry_id, bool keep_monitoring);
static int32 GetIndustryPickupAmount(ScriptCompany::CompanyID company, CargoID cargo, IndustryID industry_id, bool keep_monitoring);
/** Stop monitoring everything. */
static void StopAllMonitoring();

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