VC遍历dll导出函数

参考文章：http://www.ccrun.com/article.asp?i=653&d=b2m5o1

代码：

// ViewDllFunc.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include<windows.h>
#include<stdio.h>
#include<Imagehlp.h>
#pragma comment(lib,"Imagehlp.lib")

bool GetDLLFileExports(char *szFileName, UINT *nNoOfExports, char **&pszFunctions);

int main(int argc, char* argv[])
{
	UINT unNoOfExports=0;
    char **lppBuffer;

    GetDLLFileExports("dllA.dll", &unNoOfExports, lppBuffer);

	char func[256];
	memset(func,0,sizeof(func));
    for(UINT i=0; i<unNoOfExports; i++)
	{
       // Memo1->Lines->Add(lppBuffer[i]);
		sprintf(func,"%d %s",i,lppBuffer[i]);
		printf("%s \n",func);
	}

    for(i=0; i<unNoOfExports; i++)
        delete []lppBuffer[i];

    delete []lppBuffer;

	printf("Hello World!\n");
	getchar();
	return 0;
}


bool GetDLLFileExports(char *szFileName, UINT *nNoOfExports, char **&pszFunctions)
{
    HANDLE hFile;
    HANDLE hFileMapping;
    LPVOID lpFileBase;
    PIMAGE_DOS_HEADER pImg_DOS_Header;
    PIMAGE_NT_HEADERS pImg_NT_Header;
    PIMAGE_EXPORT_DIRECTORY pImg_Export_Dir;

    hFile = CreateFile(szFileName, GENERIC_READ, FILE_SHARE_READ,NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0);
    if(hFile == INVALID_HANDLE_VALUE)
        return false;

    hFileMapping = CreateFileMapping(hFile, NULL, PAGE_READONLY, 0, 0, NULL);
    if(hFileMapping == 0)
    {
        CloseHandle(hFile);
        return false;
    }

    lpFileBase = MapViewOfFile(hFileMapping, FILE_MAP_READ, 0, 0, 0);
    if(lpFileBase == 0)
    {
        CloseHandle(hFileMapping);
        CloseHandle(hFile);
        return false;
    }

    pImg_DOS_Header = (PIMAGE_DOS_HEADER)lpFileBase;
    pImg_NT_Header = (PIMAGE_NT_HEADERS)(
            (LONG)pImg_DOS_Header + (LONG)pImg_DOS_Header->e_lfanew);

    if(IsBadReadPtr(pImg_NT_Header, sizeof(IMAGE_NT_HEADERS))
            || pImg_NT_Header->Signature != IMAGE_NT_SIGNATURE)
    {
    UnmapViewOfFile(lpFileBase);
    CloseHandle(hFileMapping);
    CloseHandle(hFile);
    return false;
    }

    pImg_Export_Dir = (PIMAGE_EXPORT_DIRECTORY)pImg_NT_Header->OptionalHeader
            .DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress;
    if(!pImg_Export_Dir)
    {
		UnmapViewOfFile(lpFileBase);
		CloseHandle(hFileMapping);
		CloseHandle(hFile);
		return false;
    }
    // 63 63 72 75 6E 2E 63 6F 6D
    pImg_Export_Dir= (PIMAGE_EXPORT_DIRECTORY)ImageRvaToVa(pImg_NT_Header,
            pImg_DOS_Header, (DWORD)pImg_Export_Dir, 0);

    DWORD **ppdwNames = (DWORD **)pImg_Export_Dir->AddressOfNames;

    ppdwNames = (PDWORD*)ImageRvaToVa(pImg_NT_Header,
            pImg_DOS_Header, (DWORD)ppdwNames, 0);
    if(!ppdwNames)
    {
        UnmapViewOfFile(lpFileBase);
        CloseHandle(hFileMapping);
        CloseHandle(hFile);
        return false;
    }

    *nNoOfExports = pImg_Export_Dir->NumberOfNames;
    pszFunctions = new char*[*nNoOfExports];

    for(UINT i=0; i < *nNoOfExports; i++)
    {
        char *szFunc=(PSTR)ImageRvaToVa(pImg_NT_Header, pImg_DOS_Header, (DWORD)*ppdwNames, 0);

        pszFunctions[i] = new char[strlen(szFunc)+1];
        strcpy(pszFunctions[i],szFunc);

        ppdwNames++;
    }
    UnmapViewOfFile(lpFileBase);
    CloseHandle(hFileMapping);
    CloseHandle(hFile);
    return true;
}

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