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- added bounds checks for serialization of pointers

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Bogus pointers and offsets were serialized silently
This will to find other cases of dangling pointers, and protect from loading of broken saved games

https://forum.zdoom.org/viewtopic.php?t=67494
This commit is contained in:
alexey.lysiuk 2020-08-22 11:13:38 +03:00
commit dfd5726eb0
2 changed files with 30 additions and 24 deletions
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28
src/serializer_doom.cpp
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@ -231,54 +231,40 @@ template<> FSerializer &Serialize(FSerializer &ar, const char *key, FPolyObj *&v
{
auto arc = dynamic_cast<FDoomSerializer*>(&ar);
if (!arc || arc->Level == nullptr) I_Error("Trying to serialize polyobject without a valid level");
return SerializePointer(*arc, key, value, defval, arc->Level->Polyobjects.Data());
}
template<> FSerializer &Serialize(FSerializer &ar, const char *key, const FPolyObj *&value, const FPolyObj **defval)
{
auto arc = dynamic_cast<FDoomSerializer*>(&ar);
if (!arc || arc->Level == nullptr) I_Error("Trying to serialize polyobject without a valid level");
return SerializePointer<const FPolyObj>(*arc, key, value, defval, arc->Level->Polyobjects.Data());
return SerializePointer(*arc, key, value, defval, arc->Level->Polyobjects);
}
template<> FSerializer &Serialize(FSerializer &ar, const char *key, side_t *&value, side_t **defval)
{
auto arc = dynamic_cast<FDoomSerializer*>(&ar);
if (!arc || arc->Level == nullptr) I_Error("Trying to serialize SIDEDEF without a valid level");
return SerializePointer(ar, key, value, defval, arc->Level->sides.Data());
return SerializePointer(*arc, key, value, defval, arc->Level->sides);
}
template<> FSerializer &Serialize(FSerializer &ar, const char *key, sector_t *&value, sector_t **defval)
{
auto arc = dynamic_cast<FDoomSerializer*>(&ar);
if (!arc || arc->Level == nullptr) I_Error("Trying to serialize sector without a valid level");
return SerializePointer(*arc, key, value, defval, arc->Level->sectors.Data());
}
template<> FSerializer &Serialize(FSerializer &ar, const char *key, const sector_t *&value, const sector_t **defval)
{
auto arc = dynamic_cast<FDoomSerializer*>(&ar);
if (!arc || arc->Level == nullptr) I_Error("Trying to serialize sector without a valid level");
return SerializePointer<const sector_t>(*arc, key, value, defval, arc->Level->sectors.Data());
return SerializePointer(*arc, key, value, defval, arc->Level->sectors);
}
template<> FSerializer &Serialize(FSerializer &arc, const char *key, player_t *&value, player_t **defval)
{
return SerializePointer(arc, key, value, defval, players);
return SerializePointer(arc, key, value, defval, players, MAXPLAYERS);
}
template<> FSerializer &Serialize(FSerializer &ar, const char *key, line_t *&value, line_t **defval)
{
auto arc = dynamic_cast<FDoomSerializer*>(&ar);
if (!arc || arc->Level == nullptr) I_Error("Trying to serialize linedef without a valid level");
return SerializePointer(*arc, key, value, defval, arc->Level->lines.Data());
return SerializePointer(*arc, key, value, defval, arc->Level->lines);
}
template<> FSerializer &Serialize(FSerializer &ar, const char *key, vertex_t *&value, vertex_t **defval)
{
auto arc = dynamic_cast<FDoomSerializer*>(&ar);
if (!arc || arc->Level == nullptr) I_Error("Trying to serialize vertex without a valid level");
return SerializePointer(*arc, key, value, defval, arc->Level->vertexes.Data());
if (!arc || arc->Level == nullptr) I_Error("Trying to serialize verte without a valid level");
return SerializePointer(*arc, key, value, defval, arc->Level->vertexes);
}
//==========================================================================