堆棧內存溢出
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ATL COM dll中的緩沖區溢出

[英]Buffer overrun in ATL COM dll

 原文  2012-02-17 16:59:32  5   1    c++/ visual-studio/ dll/ com/ atl

問題描述

我正在嘗試使用ATL創建一個與我最初在C＃中擁有的另一個匹配的COM dll。 該dll通常由第三方dll調用，而我沒有此DLL的源代碼，因此我希望UUID與progID相同。 我也有一個測試應用程序，該應用程序在dll中調用方法，這就是我一直對其進行測試的方式。 測試應用程序定義的接口是： 

STDMETHOD(GetSwitchCriteria)(double* intensity, double* minMass, double* maxMass, 
    BOOL* selectIntensity, long* numOfDepCycles) = 0;
STDMETHOD(GetChargeStateParam)(short* minCharge, short* maxCharge, BOOL* doChargeState) = 0;
STDMETHOD(GetInclusionList)(double* intensity, double* theList, short* numOfItems) = 0;
STDMETHOD(GetExclusionList)(long* exRTWindow, double* theMassList, long* theRTList, 
    short* numOfItems) = 0;
STDMETHOD(GetOtherCriteria)(long* smartFilterTime, double* isoExclusionWin,
    double* massTolerance, BOOL* isPPM) = 0;
STDMETHOD(GetIsotopeMatchParam)(double* theMassList, double* theAbundanceList,
    short* numOfItems, double* abTolerance, double* maTolerance) = 0;

// called at the start of each IDA run
STDMETHOD(OnInitIDA)() = 0;
// called at the end of each survey scan
STDMETHOD(OnScreenSurveySpec)() = 0;
// called at the time of switch
STDMETHOD(OnPrepareNextScan)(double* selectedMasses, double* selectedIntensities, long* selectedCharges, int itemCount) = 0;

在我使用ATL的新dll中，我試圖模仿這一點，其定義如下： 

STDMETHOD(GetSwitchCriteria)(DOUBLE* intensity, DOUBLE* minMass, DOUBLE* maxMass, VARIANT_BOOL* selectIntensity, LONG* numOfDepCycles);
STDMETHOD(GetChargeStateParam)(SHORT* minCharge, SHORT* maxCharge, VARIANT_BOOL* doChargeState);
STDMETHOD(GetInclusionList)(DOUBLE* intensity, DOUBLE* theList, SHORT* numOfItems);
STDMETHOD(GetExclusionList)(LONG* exRTWindow, DOUBLE* theMassList, LONG* theRTList, SHORT* numOfItems);
STDMETHOD(GetOtherCriteria)(LONG* smartFilterTime, DOUBLE* isoExclusionWin, DOUBLE* massTolerance, VARIANT_BOOL* isPPM);
STDMETHOD(GetIsotopeMatchParam)(DOUBLE* theMassList, DOUBLE* theAbundanceList, DOUBLE* abTolerance, DOUBLE* maTolerance);
STDMETHOD(OnInitIDA)(void);
STDMETHOD(OnScreenSurveySpec)(void);
STDMETHOD(OnPrepareNextScan)(DOUBLE* selectedMasses, DOUBLE* selectedIntensities, LONG* selectedCharges, LONG itemCount);

最初，我使用BOOL作為某些參數，但是當我在TLB文件中查找C＃dll時，我注意到它使用了VARIANT_BOOL。

當我調用兩個沒有參數的方法時，我得到的HRESULT為0。OnPrepareNextScan方法也是如此。 但是，當我打電話給其他人時，我得到一個例外，緩沖區溢出，我不確定為什么會這樣。 有誰知道為什么會這樣或我如何調查呢？

這是否可能是由於兩個接口中定義的類型之間的類型不兼容，也可能是我創建用於該方法的變量時使用的類型之間的不兼容？ 用於調用方法之一的代碼示例為： 

short minCharge = 0;
short maxCharge = 0;
BOOL doChargeState = FALSE;

result = m_pUserIDA->GetChargeStateParam(&minCharge, &maxCharge, &doChargeState);
    std::cout << "HRESULT of GetChargeStateParam: " << result << std::endl;

嘗試了下面提到的LONGLONG解決方案，但似乎沒有幫助。

我以為我應該從C＃dll發布原始接口。 

[Guid("76F452FF-7A89-11d4-8A2C-00B0D023C6A0")]
[InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
public unsafe interface IUserIDA
{
    [DispId(1)]
    void GetSwitchCriteria(ref double intensity, ref double minMass, ref double maxMass, ref bool selectIntensity, ref long numOfDepCycles);

    [DispId(2)]
    void GetChargeStateParam(ref short minCharge, ref short maxCharge, ref bool doChargeState);

    [DispId(3)]
    void GetInclusionList(ref double intensity, ref double theList, ref short numOfItems);

    [DispId(4)]
    void GetExclusionList(ref long exRTWindow, ref double theMassList, ref long theRTList, ref short numOfItems);

    [DispId(5)]
    void GetOtherCriteria(ref long smartFilterTime, ref double isoExclusionWin, ref double massTolerance, ref bool isPPM);

    [DispId(6)]
    void GetIsotopeMatchParam(ref double theMassList, ref double theAbundanceList, ref short numOfItems, ref  double abTolerance, ref double maTolerance);

    [DispId(7)]
    void OnInitIDA();

    [DispId(8)]
    void OnScreenSurveySpec();

    [DispId(9)]
    void OnPrepareNextScan(double* selectedMasses, double* SelectedIntensities, long* selectedCharges, int itemCount);
}

最后一種方法OnPrepareNextScan是唯一可行的方法，您可以看到它是使用普通指針而不是.NET ref語句定義的，這可能是問題嗎？

我以為我可能還會為每個文件都包含Type Lib文件，也許它們之間的差異將使問題出在哪里，以及兩者之間的任何區別：

原始的C＃dll： 

// Generated .IDL file (by the OLE/COM Object Viewer)
// 
// typelib filename: AnalystIDA.dll

[
 uuid(7ED40FB0-D178-47FA-9EF3-B434E0803D5F),
 version(1.0),
 custom(90883F05-3D28-11D2-8F17-00A0C9A6186D, "Analyst_UserIDA, Version=1.0.0.0,     Culture=neutral, PublicKeyToken=de4cf4f15e545467")

]
library Analyst_UserIDA
{
// TLib :     // TLib : mscorlib.dll : {BED7F4EA-1A96-11D2-8F08-00A0C9A6186D}
importlib("mscorlib.tlb");
// TLib : OLE Automation : {00020430-0000-0000-C000-000000000046}
importlib("stdole2.tlb");

// Forward declare all types defined in this typelib
interface IUserIDA;
interface _Utility;

[
  uuid(CDD947DD-7B9E-382E-9F6F-55218F927C3A),
  version(1.0),
  custom(0F21F359-AB84-41E8-9A78-36D110E6D2F9, "Analyst_UserIDA.Utility")
]
coclass Utility {
    [default] interface _Utility;
    interface _Object;
};

[
  odl,
  uuid(76F452FF-7A89-11D4-8A2C-00B0D023C6A0),
  version(1.0),
  oleautomation,
  custom(0F21F359-AB84-41E8-9A78-36D110E6D2F9, "Analyst_UserIDA.IUserIDA")    

]
interface IUserIDA : IUnknown {
    HRESULT _stdcall GetSwitchCriteria(
                    [in, out] double* intensity, 
                    [in, out] double* minMass, 
                    [in, out] double* maxMass, 
                    [in, out] VARIANT_BOOL* selectIntensity, 
                    [in, out] int64* numOfDepCycles);
    HRESULT _stdcall GetChargeStateParam(
                    [in, out] short* minCharge, 
                    [in, out] short* maxCharge, 
                    [in, out] VARIANT_BOOL* doChargeState);
    HRESULT _stdcall GetInclusionList(
                    [in, out] double* intensity, 
                    [in, out] double* theList, 
                    [in, out] short* numOfItems);
    HRESULT _stdcall GetExclusionList(
                    [in, out] int64* exRTWindow, 
                    [in, out] double* theMassList, 
                    [in, out] int64* theRTList, 
                    [in, out] short* numOfItems);
    HRESULT _stdcall GetOtherCriteria(
                    [in, out] int64* smartFilterTime, 
                    [in, out] double* isoExclusionWin, 
                    [in, out] double* massTolerance, 
                    [in, out] VARIANT_BOOL* isPPM);
    HRESULT _stdcall GetIsotopeMatchParam(
                    [in, out] double* theMassList, 
                    [in, out] double* theAbundanceList, 
                    [in, out] short* numOfItems, 
                    [in, out] double* abTolerance, 
                    [in, out] double* maTolerance);
    HRESULT _stdcall OnInitIDA();
    HRESULT _stdcall OnScreenSurveySpec();
    HRESULT _stdcall OnPrepareNextScan(
                    [in, out] double* selectedMasses, 
                    [in, out] double* SelectedIntensities, 
                    [in, out] int64* selectedCharges, 
                    [in] long itemCount);
};

[
  uuid(5B2DBDD4-B763-428A-B48F-2E148138E7A4),
  version(1.0),
  custom(0F21F359-AB84-41E8-9A78-36D110E6D2F9, "Analyst_UserIDA.UserIDAObject")
]
coclass UserIDAObject {
    interface _Object;
    [default] interface IUserIDA;
};

[
  odl,
  uuid(8094073C-362D-37BB-9791-E9D163271C73),
  hidden,
  dual,
  oleautomation,
  custom(0F21F359-AB84-41E8-9A78-36D110E6D2F9, "Analyst_UserIDA.Utility")    

]
interface _Utility : IDispatch {
};
};

我的新dll： 

// Generated .IDL file (by the OLE/COM Object Viewer)
// 
// typelib filename: AnalystIDA.dll

[
 uuid(7ED40FB0-D178-47FA-9EF3-B434E0803D5F),
 version(1.0),
 helpstring("AnalystIDA 1.0 Type Library"),
 custom(DE77BA64-517C-11D1-A2DA-0000F8773CE9, 117441012),
 custom(DE77BA63-517C-11D1-A2DA-0000F8773CE9, 1329510523),
 custom(DE77BA65-517C-11D1-A2DA-0000F8773CE9, "Created by MIDL version 7.00.0500 at  Fri     Feb 17 15:28:38 2012
")

]
library AnalystIDALib
{
// TLib :     // TLib : OLE Automation : {00020430-0000-0000-C000-000000000046}
importlib("stdole2.tlb");

// Forward declare all types defined in this typelib
interface IUserIDA;

[
  uuid(5B2DBDD4-B763-428A-B48F-2E148138E7A4),
  helpstring("UserIDAObject Class")
]
coclass UserIDAObject {
    [default] interface IUserIDA;
};

[
  odl,
  uuid(76F452FF-7A89-11D4-8A2C-00B0D023C6A0),
  helpstring("IUserIDA Interface"),
  dual,
  nonextensible,
  oleautomation
]
interface IUserIDA : IDispatch {
    [id(0x00000001), helpstring("method GetSwitchCriteria")]
    HRESULT GetSwitchCriteria(
                    [in, out] double* intensity, 
                    [in, out] double* minMass, 
                    [in, out] double* maxMass, 
                    [in, out] VARIANT_BOOL* selectIntensity, 
                    [in, out] long* numOfDepCycles);
    [id(0x00000002), helpstring("method GetChargeStateParam")]
    HRESULT GetChargeStateParam(
                    [in, out] short* minCharge, 
                    [in, out] short* maxCharge, 
                    [in, out] VARIANT_BOOL* doChargeState);
    [id(0x00000003), helpstring("method GetInclusionList")]
    HRESULT GetInclusionList(
                    [in, out] double* intensity, 
                    [in, out] double* theList, 
                    [in, out] short* numOfItems);
    [id(0x00000004), helpstring("method GetExclusionList")]
    HRESULT GetExclusionList(
                    [in, out] long* exRTWindow, 
                    [in, out] double* theMassList, 
                    [in, out] long* theRTList, 
                    [in, out] short* numOfItems);
    [id(0x00000005), helpstring("method GetOtherCriteria")]
    HRESULT GetOtherCriteria(
                    [in, out] long* smartFilterTime, 
                    [in, out] double* isoExclusionWin, 
                    [in, out] double* massTolerance, 
                    [in, out] VARIANT_BOOL* isPPM);
    [id(0x00000006), helpstring("method GetIsotopeMatchParam")]
    HRESULT GetIsotopeMatchParam(
                    [in, out] double* theMassList, 
                    [in, out] double* theAbundanceList, 
                    [in, out] double* abTolerance, 
                    [in, out] double* maTolerance);
    [id(0x00000007), helpstring("method OnInitIDA")]
    HRESULT OnInitIDA();
    [id(0x00000008), helpstring("method OnScreenSurveySpec")]
    HRESULT OnScreenSurveySpec();
    [id(0x00000009), helpstring("method OnPrepareNextScan")]
    HRESULT OnPrepareNextScan(
                    [in, out] double* selectedMasses, 
                    [in, out] double* selectedIntensities, 
                    [in, out] long* selectedCharges, 
                    [in] long itemCount);
};
};

另一個編輯：我注意到ProgID Analyst_UserIDA.UserIDAObject沒有出現在我的新dll的類型lib中。 這是為了在測試應用程序中創建UserIDAObject的實例：IUserIDAPtr m_pUserIDA; :: CoInitialize（m_pUserIDA）; m_pUserIDA.CreateInstance（_T（“ Analyst_UserIDA.UserIDAObject”））;

更多進步/困惑：我決定通過創建一個將調用此dll的C＃項目來查看DLL是否存在問題。 當我這樣做時，我的工作方式出現了問題。 我還注意到，最初看來可行的方法沒有效果。 我向其中之一添加了一個sleep語句，當我的測試應用程序調用該語句時，它似乎從未執行過。

1 個解決方案

解決方案1
 0  2012-02-17 19:31:41

請注意，在Win32中， LONG是32位整數，而在C＃中， long是64位整數。 這可能會導致您描述的問題。

解決方案是，每當C＃使用long時，都使用__int64或LONGLONG 。

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