check value range before accessing a group objects

This commit is contained in:
Luas Lichtl 2024-08-30 18:46:24 +02:00
parent 150f3fc24b
commit 7e6de21a95
3 changed files with 11 additions and 4 deletions

View File

@ -6,7 +6,7 @@
BauSystemBDevice::BauSystemBDevice(Platform& platform) :
BauSystemB(platform),
_addrTable(_memory),
_assocTable(_memory), _groupObjTable(_memory),
_assocTable(_memory), _groupObjTable(_memory, platform),
#ifdef USE_DATASECURE
_appLayer(_deviceObj, _secIfObj, *this),
#else

View File

@ -5,8 +5,8 @@
#include "bits.h"
#include "data_property.h"
GroupObjectTableObject::GroupObjectTableObject(Memory& memory)
: TableObject(memory)
GroupObjectTableObject::GroupObjectTableObject(Memory& memory, Platform& platform)
: TableObject(memory), _platform(platform)
{
Property* properties[]
{
@ -30,6 +30,11 @@ uint16_t GroupObjectTableObject::entryCount()
GroupObject& GroupObjectTableObject::get(uint16_t asap)
{
if ((asap == 0) || (asap > UINT8_MAX)) {
println("Group Object ID out of range!");
_platform.fatalError();
}
return _groupObjects[asap - 1];
}

View File

@ -2,13 +2,14 @@
#include "table_object.h"
#include "group_object.h"
#include "platform.h"
class GroupObjectTableObject : public TableObject
{
friend class GroupObject;
public:
GroupObjectTableObject(Memory& memory);
GroupObjectTableObject(Memory& memory, Platform& platform);
virtual ~GroupObjectTableObject();
uint16_t entryCount();
GroupObject& get(uint16_t asap);
@ -24,6 +25,7 @@ class GroupObjectTableObject : public TableObject
void freeGroupObjects();
bool initGroupObjects();
uint16_t* _tableData = 0;
Platform& _platform;
GroupObject* _groupObjects = 0;
uint16_t _groupObjectCount = 0;
};