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479272d59f
SqMod/module/Core/Privilege.hpp
Sandu Liviu Catalin 479272d59f Add iteration.
2021-02-05 15:42:27 +02:00

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#pragma once
/* ------------------------------------------------------------------------------------------------
* This could have been much more flexible and advanced than this (as initially planned).
* However, several factors played an important role in its current simplicity:
* 1) Time constraints:
* This had to be done over the course of a weekend (at worst). It might be extended
* over time but right now this will do.
* 2) Performance cost:
* Privilege micro-management will become costly if scripting is involved. Therefore, several
* sacrifices had to be made. Such as type-agnostic status value, script controlled query etc.
*/
// ------------------------------------------------------------------------------------------------
#include "Core/Privilege/Class.hpp"
#include "Core/Privilege/Entry.hpp"
// ------------------------------------------------------------------------------------------------
namespace SqMod {
/* ------------------------------------------------------------------------------------------------
* Privilege manager responsible for keeping track of each resource and handling requests.
*/
struct PvManager : SqChainedInstances< PvManager >
{
/* --------------------------------------------------------------------------------------------
* Container that stores privilege entries.
*/
PvEntry::List m_Entries;
/* --------------------------------------------------------------------------------------------
* Container that stores the managed classes.
*/
PvClass::List m_Classes;
/* --------------------------------------------------------------------------------------------
* Container that stores all the managed units.
*/
PvUnit::List m_Units;
/* --------------------------------------------------------------------------------------------
* Dedicated callback for privilege query event.
*/
Function m_OnQuery;
/* --------------------------------------------------------------------------------------------
* Dedicated callback for privilege modify event.
*/
Function m_OnModify;
/* --------------------------------------------------------------------------------------------
* Dedicated callback for privilege gained event.
*/
Function m_OnGained;
/* --------------------------------------------------------------------------------------------
* Dedicated callback for privilege lost event.
*/
Function m_OnLost;
/* --------------------------------------------------------------------------------------------
* User tag associated with this instance.
*/
StackStrF m_Tag;
/* --------------------------------------------------------------------------------------------
* User data associated with this instance.
*/
LightObj m_Data;
/* --------------------------------------------------------------------------------------------
* Used to prevent modification of entries, classes or units.
*/
bool m_LockEntries;
bool m_LockClasses;
bool m_LockUnits;
public:
/* -------------------------------------------------------------------------------------------
* Default constructor.
*/
PvManager()
: m_Entries(), m_Classes(), m_Units()
, m_OnQuery(), m_OnModify(), m_OnGained(), m_OnLost()
, m_Tag(), m_Data()
, m_LockEntries(false), m_LockClasses(false), m_LockUnits(false)
{
// Remember this instance
ChainInstance();
}
/* -------------------------------------------------------------------------------------------
* Default constructor.
*/
explicit PvManager(StackStrF & tag)
: m_Entries(), m_Classes(), m_Units()
, m_OnQuery(), m_OnModify(), m_OnGained(), m_OnLost()
, m_Tag(std::move(tag)), m_Data()
, m_LockEntries(false), m_LockClasses(false), m_LockUnits(false)
{
// Remember this instance
ChainInstance();
}
/* -------------------------------------------------------------------------------------------
* Copy constructor (disabled).
*/
PvManager(const PvManager & o) = delete;
/* -------------------------------------------------------------------------------------------
* Move constructor (disabled).
*/
PvManager(PvManager && o) = delete;
/* -------------------------------------------------------------------------------------------
* Destructor.
*/
~PvManager()
{
// Forget about this instance
UnchainInstance();
}
/* -------------------------------------------------------------------------------------------
* Copy assignment operator (disabled).
*/
PvManager & operator = (const PvManager & o) = delete;
/* -------------------------------------------------------------------------------------------
* Move assignment operator (disabled).
*/
PvManager & operator = (PvManager && o) = delete;
/* --------------------------------------------------------------------------------------------
* Used by the script engine to convert an instance of this type to a string.
*/
SQMOD_NODISCARD auto ToString() const
{
return m_Tag.mObj;
}
/* --------------------------------------------------------------------------------------------
* Retrieve the associated user tag.
*/
SQMOD_NODISCARD auto GetTag() const
{
return m_Tag.mObj;
}
/* --------------------------------------------------------------------------------------------
* Modify the associated user tag.
*/
void SetTag(StackStrF & tag)
{
m_Tag = std::move(tag);
}
/* --------------------------------------------------------------------------------------------
* Modify the associated user tag.
*/
SQMOD_NODISCARD PvManager & ApplyTag(StackStrF & tag)
{
SetTag(tag);
return *this;
}
/* --------------------------------------------------------------------------------------------
* Retrieve the associated user data.
*/
SQMOD_NODISCARD LightObj & GetData()
{
return m_Data;
}
/* --------------------------------------------------------------------------------------------
* Modify the associated user data.
*/
void SetData(LightObj & data)
{
m_Data = data;
}
/* --------------------------------------------------------------------------------------------
* Release all script resources. Recursively forward request to all classes, units and entries.
*/
void Release();
/* --------------------------------------------------------------------------------------------
* Terminate the all managers by releasing their classes and units and callbacks.
*/
void Terminate();
/* --------------------------------------------------------------------------------------------
* Makes sure you can modify current entries.
*/
void ModifyEntries()
{
if (m_LockEntries)
{
STHROWF("Entries cannot be modified");
}
}
/* --------------------------------------------------------------------------------------------
* Makes sure you can modify current entries.
*/
void ModifyClasses()
{
if (m_LockClasses)
{
STHROWF("Classes cannot be modified");
}
}
/* --------------------------------------------------------------------------------------------
* Makes sure you can modify current entries.
*/
void ModifyUnits()
{
if (m_LockUnits)
{
STHROWF("Units cannot be modified");
}
}
/* --------------------------------------------------------------------------------------------
* Bind a script function to the status query callback.
*/
void SetOnQuery(Function & func)
{
m_OnQuery = std::move(func);
}
/* --------------------------------------------------------------------------------------------
* Retrieve the function bound to the status query callback.
*/
SQMOD_NODISCARD const Function & GetOnQuery() const
{
return m_OnQuery;
}
/* --------------------------------------------------------------------------------------------
* Find out the callback that must be invoked to handle query events for a certain entry.
*/
SQMOD_NODISCARD const Function & GetOnQuery(SQInteger id) const
{
// Look for a the specified entry
auto itr = m_Entries.find(PvIdentity(id));
// Does the specified entry exist?
if (itr != m_Entries.end())
{
return itr->second->mOnQuery;
}
// Default to the global one
return m_OnQuery;
}
/* --------------------------------------------------------------------------------------------
* Bind a script function to the status modify callback.
*/
void SetOnModify(Function & func)
{
m_OnModify = std::move(func);
}
/* --------------------------------------------------------------------------------------------
* Retrieve the function bound to the status modify callback.
*/
SQMOD_NODISCARD const Function & GetOnModify() const
{
return m_OnModify;
}
/* --------------------------------------------------------------------------------------------
* Find out the callback that must be invoked to handle modify events for a certain entry.
*/
SQMOD_NODISCARD const Function & GetOnModify(SQInteger id) const
{
// Look for a the specified entry
auto itr = m_Entries.find(PvIdentity(id));
// Does the specified entry exist?
if (itr != m_Entries.end())
{
return itr->second->mOnModify;
}
// Default to the global one
return m_OnModify;
}
/* --------------------------------------------------------------------------------------------
* Bind a script function to the status gained callback.
*/
void SetOnGained(Function & func)
{
m_OnGained = std::move(func);
}
/* --------------------------------------------------------------------------------------------
* Retrieve the function bound to the status gained callback.
*/
SQMOD_NODISCARD const Function & GetOnGained() const
{
return m_OnGained;
}
/* --------------------------------------------------------------------------------------------
* Find out the callback that must be invoked to handle gained events for a certain entry.
*/
SQMOD_NODISCARD const Function & GetOnGained(SQInteger id) const
{
// Look for a the specified entry
auto itr = m_Entries.find(PvIdentity(id));
// Does the specified entry exist?
if (itr != m_Entries.end())
{
return itr->second->mOnGained;
}
// Default to the global one
return m_OnGained;
}
/* --------------------------------------------------------------------------------------------
* Bind a script function to the status lost callback.
*/
void SetOnLost(Function & func)
{
m_OnLost = std::move(func);
}
/* --------------------------------------------------------------------------------------------
* Retrieve the function bound to the status lost callback.
*/
SQMOD_NODISCARD Function & GetOnLost()
{
return m_OnLost;
}
/* --------------------------------------------------------------------------------------------
* Find out the callback that must be invoked to handle lost events for a certain entry.
*/
SQMOD_NODISCARD Function & GetOnLost(SQInteger id)
{
// Look for a the specified entry
auto itr = m_Entries.find(PvIdentity(id));
// Does the specified entry exist?
if (itr != m_Entries.end())
{
return itr->second->mOnLost;
}
// Default to the global one
return m_OnLost;
}
/* --------------------------------------------------------------------------------------------
* Make sure a specific entry exists and return a smart reference to it.
*/
SQMOD_NODISCARD const PvEntry::Ref & GetValidEntry(SQInteger id)
{
// Look for a the specified entry
auto itr = m_Entries.find(PvIdentity(id));
// Does this entry exist?
if (itr == m_Entries.end())
{
STHROWF("Entry ({}) doesn't exists", id);
}
// Return the reference
return itr->second;
}
/* --------------------------------------------------------------------------------------------
* Make sure a specific class exists and return a smart reference to it.
*/
SQMOD_NODISCARD const PvClass::Ref & GetValidClass(SQInteger id)
{
// Look for a the specified class
auto itr = m_Classes.find(PvIdentity(id));
// Does this class exist?
if (itr == m_Classes.end())
{
STHROWF("Class ({}) doesn't exists", id);
}
// Return the reference
return itr->second;
}
/* --------------------------------------------------------------------------------------------
* Make sure a specific unit exists and return a smart reference to it.
*/
SQMOD_NODISCARD const PvUnit::Ref & GetValidUnit(SQInteger id)
{
// Look for a the specified unit
auto itr = m_Units.find(PvIdentity(id));
// Does this unit exist?
if (itr == m_Units.end())
{
STHROWF("Unit ({}) doesn't exists", id);
}
// Return the reference
return itr->second;
}
/* --------------------------------------------------------------------------------------------
* Make sure a specific entry exists and return a reference to it.
*/
SQMOD_NODISCARD PvEntry & ValidEntry(SQInteger id) { return *GetValidEntry(id); }
/* --------------------------------------------------------------------------------------------
* Make sure a specific class exists and return a reference to it.
*/
SQMOD_NODISCARD PvClass & ValidClass(SQInteger id) { return *GetValidClass(id); }
/* --------------------------------------------------------------------------------------------
* Make sure a specific unit exists and return a reference to it.
*/
SQMOD_NODISCARD PvUnit & ValidUnit(SQInteger id) { return *GetValidUnit(id); }
/* --------------------------------------------------------------------------------------------
* Make sure a specific entry exists and return a smart reference to it.
*/
SQMOD_NODISCARD const PvEntry::Ref & GetValidEntryWithTag(StackStrF & tag)
{
const size_t h = tag.GetHash();
for (const auto & e : m_Entries)
{
if (e.first.mHash == h)
{
return e.second;
}
}
// Not found
STHROWF("Entry ({}) doesn't exists", tag.mPtr);
SQ_UNREACHABLE
}
/* --------------------------------------------------------------------------------------------
* Make sure a specific class exists and return a smart reference to it.
*/
SQMOD_NODISCARD const PvClass::Ref & GetValidClassWithTag(StackStrF & tag)
{
const size_t h = tag.GetHash();
for (const auto & c : m_Classes)
{
if (c.first.mHash == h)
{
return c.second;
}
}
// Not found
STHROWF("Class ({}) doesn't exists", tag.mPtr);
SQ_UNREACHABLE
}
/* --------------------------------------------------------------------------------------------
* Make sure a specific unit exists and return a smart reference to it.
*/
SQMOD_NODISCARD const PvUnit::Ref & GetValidUnitWithTag(StackStrF & tag)
{
const size_t h = tag.GetHash();
for (const auto & u : m_Units)
{
if (u.first.mHash == h)
{
return u.second;
}
}
// Not found
STHROWF("Unit ({}) doesn't exists", tag.mPtr);
SQ_UNREACHABLE
}
/* --------------------------------------------------------------------------------------------
* Retrieve the default value of an entry.
*/
SQMOD_NODISCARD SQInteger GetEntryValue(SQInteger id) const
{
// Look for a the specified entry
auto itr = m_Entries.find(PvIdentity(id));
// Does this entry exist?
if (itr == m_Entries.end())
{
STHROWF("Entry ({}) doesn't exists", id);
}
// Return the associated callback
return itr->second->mDefault;
}
/* --------------------------------------------------------------------------------------------
* Update the hash of the specified entry.
*/
void UpdateEntryHash(SQInteger id, size_t hash)
{
auto itr = m_Entries.find(PvIdentity(id));
// Only update if it exists
if (itr != m_Entries.end())
{
itr->first.mHash = hash;
}
}
/* --------------------------------------------------------------------------------------------
* Update the hash of the specified class.
*/
void UpdateClassHash(SQInteger id, size_t hash)
{
auto itr = m_Classes.find(PvIdentity(id));
// Only update if it exists
if (itr != m_Classes.end())
{
itr->first.mHash = hash;
}
}
/* --------------------------------------------------------------------------------------------
* Update the hash of the specified unit.
*/
void UpdateUnitHash(SQInteger id, size_t hash)
{
auto itr = m_Units.find(PvIdentity(id));
// Only update if it exists
if (itr != m_Units.end())
{
itr->first.mHash = hash;
}
}
/* --------------------------------------------------------------------------------------------
* Create a entry unit. It throws an error if it already exists.
*/
LightObj CreateEntry(SQInteger id, StackStrF & name);
/* --------------------------------------------------------------------------------------------
* Create a class unit. It throws an error if it already exists.
*/
LightObj CreateClass(SQInteger id, StackStrF & name);
/* --------------------------------------------------------------------------------------------
* Create a unit unit. It throws an error if it already exists.
*/
LightObj CreateUnit(SQInteger id, const SqPvClass & cls, StackStrF & name);
/* --------------------------------------------------------------------------------------------
* Performs the necessary checks to see if privileges were gained or lost when changing classes.
*/
void PropagateParentAssign(const PvClass & cls, const PvClass::Ref & parent);
void PropagateParentAssign(const PvClass::Ref & cls, const PvClass::Ref & parent) { PropagateParentAssign(*cls, parent); }
/* --------------------------------------------------------------------------------------------
* Performs the necessary checks to see if privileges were gained or lost when changing classes.
*/
void PropagateParentChange(const PvClass & cls, const PvClass::Ref & parent);
void PropagateParentChange(const PvClass::Ref & cls, const PvClass::Ref & parent) { PropagateParentChange(*cls, parent); }
/* --------------------------------------------------------------------------------------------
* Performs the necessary checks to see if privileges were gained or lost when changing classes.
*/
void PropagateClassChange(const PvUnit & unit, const PvClass::Ref & cls);
void PropagateClassChange(const PvUnit::Ref & unit, const PvClass::Ref & cls) { PropagateClassChange(*unit, cls); }
/* --------------------------------------------------------------------------------------------
* Retrieve a entry with a certain identifier from this manager.
*/
SQMOD_NODISCARD LightObj GetEntryWithID(SQInteger id);
/* --------------------------------------------------------------------------------------------
* Retrieve a entry with a certain tag from this manager.
*/
SQMOD_NODISCARD LightObj GetEntryWithTag(StackStrF & tag);
/* --------------------------------------------------------------------------------------------
* See if a entry with a certain identifier exists in this manager.
*/
bool HaveEntryWithID(SQInteger id);
/* --------------------------------------------------------------------------------------------
* See if a entry with a certain tag exists in this manager.
*/
bool HaveEntryWithTag(StackStrF & tag);
/* --------------------------------------------------------------------------------------------
* Retrieve a class with a certain identifier from this manager.
*/
SQMOD_NODISCARD LightObj GetClassWithID(SQInteger id);
/* --------------------------------------------------------------------------------------------
* Retrieve a class with a certain tag from this manager.
*/
SQMOD_NODISCARD LightObj GetClassWithTag(StackStrF & tag);
/* --------------------------------------------------------------------------------------------
* See if a class with a certain identifier exists in this manager.
*/
bool HaveClassWithID(SQInteger id);
/* --------------------------------------------------------------------------------------------
* See if a class with a certain tag exists in this manager.
*/
bool HaveClassWithTag(StackStrF & tag);
/* --------------------------------------------------------------------------------------------
* Retrieve a unit with a certain identifier from this manager.
*/
SQMOD_NODISCARD LightObj GetUnitWithID(SQInteger id);
/* --------------------------------------------------------------------------------------------
* Retrieve a unit with a certain tag from this manager.
*/
SQMOD_NODISCARD LightObj GetUnitWithTag(StackStrF & tag);
/* --------------------------------------------------------------------------------------------
* See if a unit with a certain identifier exists in this manager.
*/
bool HaveUnitWithID(SQInteger id);
/* --------------------------------------------------------------------------------------------
* See if a unit with a certain tag exists in this manager.
*/
bool HaveUnitWithTag(StackStrF & tag);
/* --------------------------------------------------------------------------------------------
* Remove a entry with a certain identifier from this manager.
*/
void RemoveEntryWithID(SQInteger id);
/* --------------------------------------------------------------------------------------------
* Remove a entry with a certain tag from this manager.
*/
void RemoveEntryWithTag(StackStrF & tag);
/* --------------------------------------------------------------------------------------------
* Remove a class with a certain identifier from this manager.
*/
void RemoveClassWithID(SqPvClass & sub, SQInteger id);
/* --------------------------------------------------------------------------------------------
* Remove a class with a certain tag from this manager.
*/
void RemoveClassWithTag(SqPvClass & sub, StackStrF & tag);
/* --------------------------------------------------------------------------------------------
* Remove a unit with a certain identifier from this manager.
*/
void RemoveUnitWithID(SQInteger id);
/* --------------------------------------------------------------------------------------------
* Remove a unit with a certain tag from this manager.
*/
void RemoveUnitWithTag(StackStrF & tag);
/* --------------------------------------------------------------------------------------------
* Invoke a given callback with every known entry identifier.
*/
void EachEntryID(Object & ctx, Function & func);
/* --------------------------------------------------------------------------------------------
* Invoke a given callback with every known class identifier.
*/
void EachClassID(Object & ctx, Function & func);
/* --------------------------------------------------------------------------------------------
* Invoke a given callback with every known unit identifier.
*/
void EachUnitID(Object & ctx, Function & func);
};
} // Namespace:: SqMod
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