Source code of Windows XP (NT5)
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//+----------------------------------------------------------------------------
//
// Microsoft Windows
// Copyright (C) Microsoft Corporation, 1992 - 1993.
//
// File: misc.hxx
//
// Contents: Miscellaneous helper functions
//
// Classes: none.
//
// Functions: StringFromTrigger, CreateFolders, GetDaysOfWeekString,
// GetExitCodeString, GetSageExitCodeString
//
// History: 08-Dec-95 EricB Created.
//
//-----------------------------------------------------------------------------
#include <job_cls.hxx>
#ifndef __MISC_HXX__
#define __MISC_HXX__
#include <mbstring.h> // for _mbs* funcs
//
// Macro to determine the number of elements in an array
//
#define ARRAY_LEN(a) (sizeof(a)/sizeof(a[0]))
//
// Macro to convert Win32 errors to an HRESULT w/o overwriting the FACILITY.
//
#define _HRESULT_FROM_WIN32(x) \
(HRESULT_FACILITY(x) ? x : HRESULT_FROM_WIN32(x))
//
// minFileTime, maxFileTime - min and max for FILETIMEs
//
inline FILETIME
minFileTime(FILETIME ft1, FILETIME ft2)
{
if (CompareFileTime(&ft1, &ft2) < 0)
{
return ft1;
}
else
{
return ft2;
}
}
inline FILETIME
maxFileTime(FILETIME ft1, FILETIME ft2)
{
if (CompareFileTime(&ft1, &ft2) > 0)
{
return ft1;
}
else
{
return ft2;
}
}
//
// These functions let us use a FILETIME as an unsigned __int64 - which
// it is, after all!
//
inline DWORDLONG
FTto64(FILETIME ft)
{
ULARGE_INTEGER uli = { ft.dwLowDateTime, ft.dwHighDateTime };
return uli.QuadPart;
}
inline FILETIME
FTfrom64(DWORDLONG ft)
{
ULARGE_INTEGER uli;
uli.QuadPart = ft;
FILETIME ftResult = { uli.LowPart, uli.HighPart };
return ftResult;
}
//
// Absolute difference between two filetimes
//
inline DWORDLONG
absFileTimeDiff(FILETIME ft1, FILETIME ft2)
{
if (CompareFileTime(&ft1, &ft2) < 0)
{
return (FTto64(ft2) - FTto64(ft1));
}
else
{
return (FTto64(ft1) - FTto64(ft2));
}
}
//
// GetLocalTimeAsFileTime
//
inline FILETIME
GetLocalTimeAsFileTime()
{
FILETIME ftSystem;
GetSystemTimeAsFileTime(&ftSystem);
FILETIME ftNow;
BOOL fSuccess = FileTimeToLocalFileTime(&ftSystem, &ftNow);
Win4Assert(fSuccess);
return ftNow;
}
//+---------------------------------------------------------------------------
//
// Function: SchedMapRpcError
//
// Purpose: Remap RPC exception codes that are unsuitable for displaying
// to the user to more comprehensible errors.
//
// Arguments: [dwError] - the error returned by RpcExceptionCode().
//
// Returns: An HRESULT.
//
//----------------------------------------------------------------------------
HRESULT
SchedMapRpcError(DWORD dwError);
//+---------------------------------------------------------------------------
//
// Function: ComposeErrorMsg
//
// Purpose: Take the two message IDs and the error code and create an
// error reporting string that can be used by both service
// logging and UI dialogs.
//
// [uErrorClassMsgID] - this indicates the class of error, such
// as "Unable to start task" or "Forced to
// close"
// [dwErrorCode] - if non-zero, then an error from the OS
// that would be expanded by FormatMessage.
// [uHelpHintMsgID] - an optional suggestion as to a possible
// remedy.
// [fIndent] - flag indicating if the text should be
// indented or not.
//
// Returns: A string or NULL on failure.
//
// Notes: Release the string memory when done using LocalFree.
//----------------------------------------------------------------------------
LPTSTR
ComposeErrorMsg(
UINT uErrorClassMsgID,
DWORD dwErrCode,
UINT uHelpHintMsgID = 0,
BOOL fIndent = TRUE);
//+---------------------------------------------------------------------------
//
// Function: GetExitCodeString
//
// Synopsis: Retrieve the string associated with the exit code from a
// message file. Algorithm:
//
// Consult the Software\Microsoft\Job Scheduler subkey.
//
// Attempt to retrieve the ExitCodeMessageFile string value from
// a subkey matching the job executable prefix (i.e., minus the
// extension).
//
// The ExitCodeMessageFile specifies a binary from which the
// message string associated with the exit code value is fetched.
//
// Arguments: [dwExitCode] -- Job exit code.
// [ptszExitCodeValue] -- Job exit code in string form.
// [ptszJobExecutable] -- Binary name executed with the job.
//
// Returns: TCHAR * exit code string
// NULL on error
//
// Notes: FormatMessage allocates the return string. Use LocalFree() to
// deallocate.
//
//----------------------------------------------------------------------------
TCHAR *
GetExitCodeString(DWORD dwExitCode,
TCHAR * ptszExitCodeValue,
TCHAR * ptszJobExecutable);
//+---------------------------------------------------------------------------
//
// Function: GetSageExitCodeString
//
// Synopsis: Retrieve the string associated with the exit code the SAGE
// way. Algorithm:
//
// Consult the Software\Microsoft\System Agent\SAGE subkey.
//
// Enumerate the subkeys to find a subkey with a "Program" string
// value specifying an executable name matching that of the job.
//
// If such a subkey was found, open the Result Codes subkey and
// fetch the value name matching the exit code. The string value
// is the exit code string.
//
// Arguments: [ptszExitCodeValue] -- Job exit code in string form.
// [ptszJobExecutable] -- Binary name executed with the job.
//
// Returns: TCHAR * exit code string
// NULL on error
//
// Notes: FormatMessage allocates the return string. Use LocalFree() to
// deallocate.
//
//----------------------------------------------------------------------------
TCHAR *
GetSageExitCodeString(TCHAR * ptszExitCodeValue, TCHAR * ptszJobExecutable);
//+---------------------------------------------------------------------------
//
// Function: ComposeErrorMessage
//
// Synopsis:
//
// Arguments: [fAutoStart] - If true, service is set to autostart.
//
// Returns: HRESULTs
//
// Notes: FormatMessage allocates the return string. Use LocalFree() to
// deallocate.
//
//----------------------------------------------------------------------------
HRESULT
ComposeErrorMessage(UINT uErrMsgID,
HRESULT hrFailureCode,
UINT uSuggestionID);
//+---------------------------------------------------------------------------
//
// Function: AutoStart
//
// Synopsis: Persists the autostart state in the registry.
//
// Arguments: [fAutoStart] - If true, service is set to autostart.
//
// Returns: HRESULTs
//
// Notes: FormatMessage allocates the return string. Use LocalFree() to
// deallocate.
//
//----------------------------------------------------------------------------
HRESULT
AutoStart(BOOL fAutoStart);
#if !defined(_CHICAGO_)
SC_HANDLE
OpenScheduleService(DWORD dwDesiredAccess);
#endif // !defined(_CHICAGO_)
//
// Temporary macros to map wide-char string routines to the CRT until we
// can substitute our own.
//
#define s_wcscpy(d, s) wcscpy(d, s)
#define s_wcscat(d, s) wcscat(d, s)
#define s_wcslen(s) wcslen(s)
#define s_isDriveLetter(c) ((c >= TEXT('a') && c <= TEXT('z')) || \
(c >= TEXT('A') && c <= TEXT('Z')))
//+----------------------------------------------------------------------------
//
// Function: HasSpaces
//
// Synopsis: Scans the string for space characters.
//
// Arguments: [ptstr] - the string to scan
//
// Returns: TRUE if any space characters are found.
//
//-----------------------------------------------------------------------------
inline BOOL
HasSpacesA(LPCSTR pstr)
{
return _mbschr((PUCHAR) pstr, ' ') != NULL;
}
inline BOOL
HasSpacesW(LPCWSTR pwstr)
{
return wcschr(pwstr, L' ') != NULL;
}
#if defined(UNICODE)
# define HasSpaces HasSpacesW
#else
# define HasSpaces HasSpacesA
#endif
//+----------------------------------------------------------------------------
//
// Function: StringFromTrigger
//
// Synopsis: Returns the string representation of the passed in trigger
// data structure.
//
// Arguments: [pTrigger] - the TASK_TRIGGER struct
// [ppwszTrigger] - the returned string
// [lpDetails] - the SHELLDETAILS struct
//
// Returns: HRESULTS
//
// Notes: The string is allocated by this function with CoTaskMemAlloc.
//-----------------------------------------------------------------------------
HRESULT
StringFromTrigger(const PTASK_TRIGGER pTrigger, LPWSTR * ppwszTrigger, LPSHELLDETAILS lpDetails);
//+----------------------------------------------------------------------------
//
// Function: CreateFolders
//
// Synopsis: Creates any missing directories for any slash delimited folder
// names in the path.
//
// Arguments: [pwszPathName] - the path name
// [fHasFileName] - if true, the path name includes a file name.
//
// Returns: HRESULTS
//
// Notes: pwszPathName should never end in a slash.
// Treats forward and back slashes identically.
//-----------------------------------------------------------------------------
HRESULT
CreateFolders(LPCTSTR pwszPathName, BOOL fHasFileName);
HRESULT GetDaysOfWeekString(WORD rgfDaysOfTheWeek, LPTSTR ptszBuf, UINT cchBuf);
#if defined(_CHICAGO_)
//+-------------------------------------------------------------------------
//
// Operator: new
//
// Synopsis: Allocates memory. Needed for Chicago since we can't use the
// CRTs on that platform.
//
// Arguments: [cb] - a count of bytes to allocate
//
// Returns: a pointer to the allocated block.
//
//--------------------------------------------------------------------------
inline void * __cdecl operator new(unsigned int cb)
{
return LocalAlloc(LPTR, cb);
}
//+-------------------------------------------------------------------------
//
// Operator: delete
//
// Synopsis: Frees memory allocated with new.
//
// Arguments: [ptr] - a pointer to the allocated memory.
//
//--------------------------------------------------------------------------
inline void __cdecl operator delete(void * ptr)
{
if (ptr != NULL)
{
LocalFree(ptr);
}
}
#endif // _CHICAGO_
//+---------------------------------------------------------------------------
//
// Function: GetParentDirectory
//
// Synopsis: Return the parent directory of the path indicated.
//
// Arguments: [ptszPath] -- Input path.
// [tszDirectory] -- Caller-allocated returned directory.
//
// Returns: None.
//
// Notes: None.
//
//----------------------------------------------------------------------------
void
GetParentDirectory(LPCTSTR ptszPath, TCHAR tszDirectory[]);
VOID
GetAppNameFromPath(
LPCTSTR tszAppPathName,
LPTSTR tszCopyTo,
ULONG cchMax);
BOOL SetAppPath(LPCTSTR tszAppPathName, LPTSTR *pptszSavedPath);
#if !defined(_CHICAGO_)
BOOL
IsThreadCallerAnAdmin(HANDLE hThreadToken);
HRESULT
LoadAtJob(CJob * pJob, TCHAR * ptszAtJobFilename);
BOOL IsValidAtFilename(LPCWSTR wszFilename);
#endif // !defined(_CHICAGO_)
#endif // __MISC_HXX__