92 lines
2.0 KiB
C
92 lines
2.0 KiB
C
/*------
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* Module: xalibname.c
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*
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* Description:
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* This module gets the (path) name of xalib.
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*
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*-------
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*/
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#ifdef _HANDLE_ENLIST_IN_DTC_
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#ifndef _WIN32_WINNT
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#define _WIN32_WINNT 0x0400
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#endif /* _WIN32_WINNT */
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#define WIN32_LEAN_AND_MEAN
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#include <windows.h>
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#include <stdio.h>
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#include <stdlib.h>
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extern HMODULE s_hModule;
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static char xalibpath[_MAX_PATH] = "";
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static char xalibname[_MAX_FNAME] = "";
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static const char * const PGMFILES = "Program Files";
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static const char * const PGMFILESX86 = "Program Files (x86)";
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typedef BOOL (WINAPI *LPFN_ISWOW64PROCESS) (HANDLE, PBOOL);
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LPFN_ISWOW64PROCESS fnIsWow64Process;
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BOOL IsWow64()
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{
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static BOOL bCalled = FALSE;
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static BOOL bIsWow64 = FALSE;
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if (bCalled)
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return bIsWow64;
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fnIsWow64Process = (LPFN_ISWOW64PROCESS) GetProcAddress(
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GetModuleHandle("kernel32"), "IsWow64Process");
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if (NULL != fnIsWow64Process)
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{
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if (!fnIsWow64Process(GetCurrentProcess(), &bIsWow64))
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{
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//handle error
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}
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}
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bCalled = TRUE;
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return bIsWow64;
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}
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const char *GetXaLibName(void)
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{
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char dllpath[_MAX_PATH], drive[_MAX_DRIVE], dir[_MAX_DIR],
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fname[_MAX_FNAME], ext[_MAX_EXT];
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if (!xalibpath[0])
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{
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size_t pgmflen = strlen(PGMFILESX86);
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char *ptr;
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GetModuleFileName(s_hModule, dllpath, sizeof(dllpath));
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/* In Windows XP SP2, the dllname should be specified */
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/* instead of the dll path name, because it looks up */
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/* the HKLM\Microfost\MSDTC\XADLL\(dllname) registry */
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/* entry for security reason. */
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_splitpath(dllpath, drive, dir, fname, ext);
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strncpy(xalibname, "pgxalib.dll", sizeof(xalibname));
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if (IsWow64())
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{
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if ('\\' == *dir &&
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0 == _strnicmp(dir + 1, PGMFILESX86, pgmflen))
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{
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ptr = dir + 1 + pgmflen;
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if ('\\' == *ptr)
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_snprintf(xalibpath, sizeof(xalibpath), "%s\\%s%s%s", drive, PGMFILES, ptr, xalibname);
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}
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}
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else
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_snprintf(xalibpath, sizeof(xalibpath), "%s%s%s", drive, dir, xalibname);
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}
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return xalibname;
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}
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const char *GetXaLibPath(void)
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{
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GetXaLibName();
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return xalibpath;
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}
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#endif /* _HANDLE_ENLIST_IN_DTC_ */
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