You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
672 lines
14 KiB
672 lines
14 KiB
/*++
|
|
|
|
Copyright (c) Microsoft Corporation. All rights reserved.
|
|
|
|
Module Name:
|
|
|
|
MSPutils.h
|
|
|
|
Abstract:
|
|
|
|
This file defines several utility classes used by the MSP base classes.
|
|
|
|
--*/
|
|
|
|
#ifndef __MSPUTILS_H_
|
|
#define __MSPUTILS_H_
|
|
|
|
|
|
#if _ATL_VER >= 0x0300
|
|
|
|
//
|
|
// ATL 3.0 contains an equivalent of DECLARE_VQI in its END_COM_MAP(), so
|
|
// DECLARE_VQI() is not needed
|
|
//
|
|
|
|
#define DECLARE_VQI()
|
|
|
|
#else
|
|
|
|
#define DECLARE_VQI() \
|
|
STDMETHOD(QueryInterface)(REFIID iid, void ** ppvObject) = 0; \
|
|
STDMETHOD_(ULONG, AddRef)() = 0; \
|
|
STDMETHOD_(ULONG, Release)() = 0;
|
|
|
|
#endif
|
|
|
|
//
|
|
// this macro expands to the appropriate MSP_x value, depending on hr.
|
|
// this is useful for logging. for instance, the statements:
|
|
//
|
|
// .....
|
|
//
|
|
// if (FAILED(hr))
|
|
// {
|
|
// LOG((MSP_ERROR, "MyClass::MyFunc - exit. hr = 0x%lx", hr));
|
|
// }
|
|
// else
|
|
// {
|
|
// LOG((MSP_TRACE, "MyClass::MyFunc - exit. hr = 0x%lx", hr));
|
|
// }
|
|
//
|
|
// return hr;
|
|
// }
|
|
//
|
|
// can be replaced with:
|
|
//
|
|
// ....
|
|
//
|
|
// LOG((MSP_(hr), "MyClass::MyFunc - exit. hr = 0x%lx", hr));
|
|
//
|
|
// return hr;
|
|
// }
|
|
//
|
|
|
|
|
|
#define MSP_(hr) (FAILED(hr)?MSP_ERROR:MSP_TRACE)
|
|
|
|
//
|
|
// return TRUE if the (possibly aggregated) media type that was passed in is valid.
|
|
//
|
|
// here is the criteria for a valid aggregated media type:
|
|
//
|
|
// 1. there is one or more bit set
|
|
// 2. all bits that are set match the possible media types
|
|
// 3. there are no set bits that don't correspond to valid meda types
|
|
//
|
|
|
|
inline BOOL IsValidAggregatedMediaType(DWORD dwAggregatedMediaType)
|
|
{
|
|
|
|
//
|
|
// these are all possible media types
|
|
//
|
|
|
|
const DWORD dwAllPossibleMediaTypes = TAPIMEDIATYPE_AUDIO |
|
|
TAPIMEDIATYPE_VIDEO |
|
|
TAPIMEDIATYPE_DATAMODEM |
|
|
TAPIMEDIATYPE_G3FAX |
|
|
TAPIMEDIATYPE_MULTITRACK;
|
|
|
|
|
|
|
|
|
|
//
|
|
// return value
|
|
//
|
|
|
|
BOOL bValidMediaType = FALSE;
|
|
|
|
|
|
//
|
|
// make sure that there is at least one allowed media type
|
|
//
|
|
// and
|
|
//
|
|
// there are no invalid media types
|
|
//
|
|
|
|
if ( (0 == (dwAggregatedMediaType & dwAllPossibleMediaTypes ) ) || // any valid bits set
|
|
(0 != (dwAggregatedMediaType & (~dwAllPossibleMediaTypes)) ) ) // no invalid bits are set
|
|
{
|
|
|
|
//
|
|
// the media type is invalid.
|
|
//
|
|
|
|
bValidMediaType = FALSE;
|
|
}
|
|
else
|
|
{
|
|
|
|
//
|
|
// the media type is valid.
|
|
//
|
|
|
|
bValidMediaType = TRUE;
|
|
|
|
}
|
|
|
|
return bValidMediaType;
|
|
}
|
|
|
|
|
|
//
|
|
// Make sure we have exactly one media type. That's not the case if
|
|
// dwMediaType is 0 or more than one bit is set in dwMediaType. Note
|
|
// that DWORD is unsigned so this should be safe.
|
|
//
|
|
inline BOOL IsSingleMediaType(DWORD dwMediaType)
|
|
{
|
|
return !((dwMediaType == 0) || ((dwMediaType & (dwMediaType - 1)) != 0));
|
|
}
|
|
|
|
//
|
|
// Check to see if the mediatype is a single type and is in the mask.
|
|
//
|
|
|
|
inline BOOL IsValidSingleMediaType(DWORD dwMediaType, DWORD dwMask)
|
|
{
|
|
return IsSingleMediaType(dwMediaType)
|
|
&& ((dwMediaType & dwMask) == dwMediaType);
|
|
}
|
|
|
|
/*++
|
|
|
|
CMSPArray template Description:
|
|
|
|
Definitions for a simple vector template. The implementaion is borrowed
|
|
from CMSPArray in atlapp.h. Modified only the allocation behavior.
|
|
|
|
This array should only be used to store simple types. It doesn't call the
|
|
constructor nor the destructor for each element in the array.
|
|
|
|
--*/
|
|
const DWORD INITIAL = 8;
|
|
const DWORD DELTA = 8;
|
|
|
|
template <class T, DWORD dwInitial = INITIAL, DWORD dwDelta = DELTA>
|
|
class CMSPArray
|
|
{
|
|
|
|
protected:
|
|
T* m_aT;
|
|
int m_nSize;
|
|
int m_nAllocSize;
|
|
|
|
public:
|
|
// Construction/destruction
|
|
CMSPArray() : m_aT(NULL), m_nSize(0), m_nAllocSize(0)
|
|
{ }
|
|
|
|
~CMSPArray()
|
|
{
|
|
RemoveAll();
|
|
}
|
|
|
|
// Operations
|
|
int GetSize() const
|
|
{
|
|
return m_nSize;
|
|
}
|
|
BOOL Grow()
|
|
{
|
|
T* aT;
|
|
int nNewAllocSize =
|
|
(m_nAllocSize == 0) ? dwInitial : (m_nSize + DELTA);
|
|
|
|
aT = (T*)realloc(m_aT, nNewAllocSize * sizeof(T));
|
|
if(aT == NULL)
|
|
return FALSE;
|
|
m_nAllocSize = nNewAllocSize;
|
|
m_aT = aT;
|
|
return TRUE;
|
|
}
|
|
|
|
BOOL Add(T& t)
|
|
{
|
|
if(m_nSize == m_nAllocSize)
|
|
{
|
|
if (!Grow()) return FALSE;
|
|
}
|
|
m_nSize++;
|
|
SetAtIndex(m_nSize - 1, t);
|
|
return TRUE;
|
|
}
|
|
BOOL Remove(T& t)
|
|
{
|
|
int nIndex = Find(t);
|
|
if(nIndex == -1)
|
|
return FALSE;
|
|
return RemoveAt(nIndex);
|
|
}
|
|
BOOL RemoveAt(int nIndex)
|
|
{
|
|
if(nIndex != (m_nSize - 1))
|
|
memmove((void*)&m_aT[nIndex], (void*)&m_aT[nIndex + 1],
|
|
(m_nSize - (nIndex + 1)) * sizeof(T));
|
|
m_nSize--;
|
|
return TRUE;
|
|
}
|
|
void RemoveAll()
|
|
{
|
|
if(m_nAllocSize > 0)
|
|
{
|
|
free(m_aT);
|
|
m_aT = NULL;
|
|
m_nSize = 0;
|
|
m_nAllocSize = 0;
|
|
}
|
|
}
|
|
T& operator[] (int nIndex) const
|
|
{
|
|
_ASSERTE(nIndex >= 0 && nIndex < m_nSize);
|
|
return m_aT[nIndex];
|
|
}
|
|
T* GetData() const
|
|
{
|
|
return m_aT;
|
|
}
|
|
|
|
// Implementation
|
|
void SetAtIndex(int nIndex, T& t)
|
|
{
|
|
_ASSERTE(nIndex >= 0 && nIndex < m_nSize);
|
|
m_aT[nIndex] = t;
|
|
}
|
|
int Find(T& t) const
|
|
{
|
|
for(int i = 0; i < m_nSize; i++)
|
|
{
|
|
if(m_aT[i] == t)
|
|
return i;
|
|
}
|
|
return -1; // not found
|
|
}
|
|
};
|
|
|
|
/*++
|
|
|
|
CMSPCritSection Description:
|
|
|
|
Definitions for a auto initialize critical section.
|
|
|
|
--*/
|
|
class CMSPCritSection
|
|
{
|
|
private:
|
|
CRITICAL_SECTION m_CritSec;
|
|
|
|
public:
|
|
CMSPCritSection()
|
|
{
|
|
InitializeCriticalSection(&m_CritSec);
|
|
}
|
|
|
|
~CMSPCritSection()
|
|
{
|
|
DeleteCriticalSection(&m_CritSec);
|
|
}
|
|
|
|
void Lock()
|
|
{
|
|
EnterCriticalSection(&m_CritSec);
|
|
}
|
|
|
|
BOOL TryLock()
|
|
{
|
|
return TryEnterCriticalSection(&m_CritSec);
|
|
}
|
|
|
|
void Unlock()
|
|
{
|
|
LeaveCriticalSection(&m_CritSec);
|
|
}
|
|
};
|
|
|
|
|
|
/*++
|
|
|
|
CMSPCritSection Description:
|
|
|
|
Definitions for a auto lock that unlocks when the variable is out
|
|
of scope.
|
|
|
|
--*/
|
|
class CLock
|
|
{
|
|
private:
|
|
CMSPCritSection &m_CriticalSection;
|
|
|
|
public:
|
|
CLock(CMSPCritSection &CriticalSection)
|
|
: m_CriticalSection(CriticalSection)
|
|
{
|
|
m_CriticalSection.Lock();
|
|
}
|
|
|
|
~CLock()
|
|
{
|
|
m_CriticalSection.Unlock();
|
|
}
|
|
};
|
|
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// CCSLock
|
|
//
|
|
// a plain old automatic lock that takes a pointer to CRITICAL_SECTION
|
|
//
|
|
// constructore enters crit section, destructor leaves critical section
|
|
//
|
|
// class client is responsible for passing a valid critical section
|
|
//
|
|
|
|
class CCSLock
|
|
{
|
|
|
|
private:
|
|
CRITICAL_SECTION *m_pCritSec;
|
|
|
|
public:
|
|
CCSLock(CRITICAL_SECTION *pCritSec)
|
|
: m_pCritSec(pCritSec)
|
|
{
|
|
EnterCriticalSection(m_pCritSec);
|
|
}
|
|
|
|
~CCSLock()
|
|
{
|
|
LeaveCriticalSection(m_pCritSec);
|
|
}
|
|
};
|
|
|
|
|
|
|
|
/*++
|
|
|
|
LINK list:
|
|
|
|
Definitions for a double link list.
|
|
|
|
--*/
|
|
|
|
//
|
|
// Calculate the address of the base of the structure given its type, and an
|
|
// address of a field within the structure.
|
|
//
|
|
#ifndef CONTAINING_RECORD
|
|
#define CONTAINING_RECORD(address, type, field) \
|
|
((type *)((PCHAR)(address) - (ULONG_PTR)(&((type *)0)->field)))
|
|
#endif
|
|
|
|
|
|
#ifndef InitializeListHead
|
|
//
|
|
// VOID
|
|
// InitializeListHead(
|
|
// PLIST_ENTRY ListHead
|
|
// );
|
|
//
|
|
|
|
#define InitializeListHead(ListHead) (\
|
|
(ListHead)->Flink = (ListHead)->Blink = (ListHead))
|
|
|
|
//
|
|
// BOOLEAN
|
|
// IsListEmpty(
|
|
// PLIST_ENTRY ListHead
|
|
// );
|
|
//
|
|
|
|
#define IsListEmpty(ListHead) \
|
|
((ListHead)->Flink == (ListHead))
|
|
|
|
//
|
|
// PLIST_ENTRY
|
|
// RemoveHeadList(
|
|
// PLIST_ENTRY ListHead
|
|
// );
|
|
//
|
|
|
|
#define RemoveHeadList(ListHead) \
|
|
(ListHead)->Flink;\
|
|
{RemoveEntryList((ListHead)->Flink)}
|
|
|
|
//
|
|
// PLIST_ENTRY
|
|
// RemoveTailList(
|
|
// PLIST_ENTRY ListHead
|
|
// );
|
|
//
|
|
|
|
#define RemoveTailList(ListHead) \
|
|
(ListHead)->Blink;\
|
|
{RemoveEntryList((ListHead)->Blink)}
|
|
|
|
//
|
|
// VOID
|
|
// RemoveEntryList(
|
|
// PLIST_ENTRY Entry
|
|
// );
|
|
//
|
|
|
|
#define RemoveEntryList(Entry) {\
|
|
PLIST_ENTRY _EX_Blink;\
|
|
PLIST_ENTRY _EX_Flink;\
|
|
_EX_Flink = (Entry)->Flink;\
|
|
_EX_Blink = (Entry)->Blink;\
|
|
_EX_Blink->Flink = _EX_Flink;\
|
|
_EX_Flink->Blink = _EX_Blink;\
|
|
}
|
|
|
|
//
|
|
// VOID
|
|
// InsertTailList(
|
|
// PLIST_ENTRY ListHead,
|
|
// PLIST_ENTRY Entry
|
|
// );
|
|
//
|
|
|
|
#define InsertTailList(ListHead,Entry) {\
|
|
PLIST_ENTRY _EX_Blink;\
|
|
PLIST_ENTRY _EX_ListHead;\
|
|
_EX_ListHead = (ListHead);\
|
|
_EX_Blink = _EX_ListHead->Blink;\
|
|
(Entry)->Flink = _EX_ListHead;\
|
|
(Entry)->Blink = _EX_Blink;\
|
|
_EX_Blink->Flink = (Entry);\
|
|
_EX_ListHead->Blink = (Entry);\
|
|
}
|
|
|
|
//
|
|
// VOID
|
|
// InsertHeadList(
|
|
// PLIST_ENTRY ListHead,
|
|
// PLIST_ENTRY Entry
|
|
// );
|
|
//
|
|
|
|
#define InsertHeadList(ListHead,Entry) {\
|
|
PLIST_ENTRY _EX_Flink;\
|
|
PLIST_ENTRY _EX_ListHead;\
|
|
_EX_ListHead = (ListHead);\
|
|
_EX_Flink = _EX_ListHead->Flink;\
|
|
(Entry)->Flink = _EX_Flink;\
|
|
(Entry)->Blink = _EX_ListHead;\
|
|
_EX_Flink->Blink = (Entry);\
|
|
_EX_ListHead->Flink = (Entry);\
|
|
}
|
|
|
|
|
|
|
|
BOOL IsNodeOnList(PLIST_ENTRY ListHead, PLIST_ENTRY Entry);
|
|
|
|
|
|
#endif //InitializeListHead
|
|
|
|
//
|
|
// Templates for private addref and release. See Platform SDK documentation.
|
|
//
|
|
|
|
template <class T> ULONG MSPAddRefHelper (T * pMyThis)
|
|
{
|
|
LOG((MSP_INFO, "MSPAddRefHelper - this = 0x%08x", pMyThis));
|
|
typedef CComAggObject<T> AggClass;
|
|
AggClass * p = CONTAINING_RECORD(pMyThis, AggClass, m_contained);
|
|
return p->AddRef();
|
|
}
|
|
|
|
template <class T> ULONG MSPReleaseHelper (T * pMyThis)
|
|
{
|
|
LOG((MSP_INFO, "MSPReleaseHelper - this = 0x%08x", pMyThis));
|
|
typedef CComAggObject<T> AggClass;
|
|
AggClass * p = CONTAINING_RECORD(pMyThis, AggClass, m_contained);
|
|
return p->Release();
|
|
}
|
|
|
|
|
|
|
|
|
|
//
|
|
// Basic implementation for IObjectSafety.
|
|
//
|
|
// Derive from this class to make your object safe for scripting on all its
|
|
// interfaces
|
|
//
|
|
|
|
#include <Objsafe.h>
|
|
|
|
|
|
class CMSPObjectSafetyImpl : public IObjectSafety
|
|
{
|
|
|
|
public:
|
|
|
|
CMSPObjectSafetyImpl()
|
|
:m_dwSafety(0)
|
|
{}
|
|
|
|
|
|
//
|
|
// we support the following safety options:
|
|
//
|
|
|
|
enum { SUPPORTED_SAFETY_OPTIONS =
|
|
INTERFACESAFE_FOR_UNTRUSTED_CALLER | INTERFACESAFE_FOR_UNTRUSTED_DATA };
|
|
|
|
|
|
|
|
STDMETHOD(SetInterfaceSafetyOptions)(REFIID riid, DWORD dwOptionSetMask, DWORD dwEnabledOptions)
|
|
{
|
|
|
|
//
|
|
// any options requested that we do not support?
|
|
//
|
|
|
|
if ( (~SUPPORTED_SAFETY_OPTIONS & dwOptionSetMask) != 0 )
|
|
{
|
|
return E_FAIL;
|
|
}
|
|
|
|
|
|
//
|
|
// see if the interface is supported at all
|
|
//
|
|
|
|
IUnknown *pUnk = NULL;
|
|
|
|
HRESULT hr = QueryInterface(riid, (void**)&pUnk);
|
|
|
|
if (SUCCEEDED(hr))
|
|
{
|
|
|
|
//
|
|
// we don't need the interface, just wanted to see if it
|
|
// was supported. so release.
|
|
//
|
|
|
|
pUnk->Release();
|
|
pUnk = NULL;
|
|
|
|
//
|
|
// the object supports the interface. Set options
|
|
//
|
|
|
|
s_CritSection.Lock();
|
|
|
|
//
|
|
// set the bits specified by the mask to the values specified by
|
|
// dwEnabledOptions
|
|
//
|
|
|
|
m_dwSafety = (dwEnabledOptions & dwOptionSetMask) |
|
|
(m_dwSafety & ~dwOptionSetMask);
|
|
|
|
s_CritSection.Unlock();
|
|
|
|
}
|
|
|
|
return hr;
|
|
}
|
|
|
|
|
|
|
|
STDMETHOD(GetInterfaceSafetyOptions)(REFIID riid, DWORD *pdwSupportedOptions, DWORD *pdwEnabledOptions)
|
|
{
|
|
|
|
//
|
|
// check caller's pointers
|
|
//
|
|
|
|
if ( IsBadWritePtr(pdwSupportedOptions, sizeof(DWORD)) ||
|
|
IsBadWritePtr(pdwEnabledOptions, sizeof(DWORD)) )
|
|
{
|
|
return E_POINTER;
|
|
}
|
|
|
|
//
|
|
// if we fail, return something meaningful
|
|
//
|
|
|
|
*pdwSupportedOptions = 0;
|
|
*pdwEnabledOptions = 0;
|
|
|
|
|
|
|
|
//
|
|
// see if the interface is supported at all
|
|
//
|
|
|
|
IUnknown *pUnk = NULL;
|
|
|
|
HRESULT hr = QueryInterface(riid, (void**)&pUnk);
|
|
|
|
if (SUCCEEDED(hr))
|
|
{
|
|
|
|
//
|
|
// we don't need the interface, just wanted to see if it
|
|
// was supported. so release.
|
|
//
|
|
|
|
pUnk->Release();
|
|
pUnk = NULL;
|
|
|
|
//
|
|
// the object supports the interface. get safe scripting options
|
|
//
|
|
|
|
*pdwSupportedOptions = SUPPORTED_SAFETY_OPTIONS;
|
|
|
|
|
|
s_CritSection.Lock();
|
|
|
|
*pdwEnabledOptions = m_dwSafety;
|
|
|
|
s_CritSection.Unlock();
|
|
|
|
}
|
|
|
|
return hr;
|
|
}
|
|
|
|
private:
|
|
|
|
DWORD m_dwSafety;
|
|
|
|
//
|
|
// thread safety
|
|
//
|
|
// the critical section is shared among all instances of this class
|
|
//
|
|
|
|
static CMSPCritSection s_CritSection;
|
|
|
|
};
|
|
|
|
#endif //__MSPUTILS_H_
|
|
|
|
// eof
|