job.c File Reference

#include "precomp.h"

Include dependency graph for job.c:

Go to the source code of this file.

Classes
struct	_SCHEDULE

Typedefs
typedef struct _SCHEDULE	SCHEDULE
typedef struct _SCHEDULE	PSCHEDULE

Functions
	WINE_DEFAULT_DEBUG_CHANNEL (schedsvc)
DWORD	GetNextJobTimeout (VOID)
static VOID	ReScheduleJob (PJOB pJob)
VOID	RunNextJob (VOID)
static VOID	GetJobName (HKEY hJobsKey, PWSTR pszJobName)
LONG	SaveJob (_In_ PJOB pJob)
LONG	DeleteJob (_In_ PJOB pJob)
LONG	LoadJobs (VOID)
static WORD	DaysOfMonth (WORD wMonth, WORD wYear)
VOID	CalculateNextStartTime (_In_ PJOB pJob)
VOID	InsertJobIntoStartList (_In_ PLIST_ENTRY StartListHead, _In_ PJOB pJob)
VOID	DumpStartList (_In_ PLIST_ENTRY StartListHead)

Variables
DWORD	dwNextJobId = 0
DWORD	dwJobCount = 0
LIST_ENTRY	JobListHead
RTL_RESOURCE	JobListLock
LIST_ENTRY	StartListHead
RTL_RESOURCE	StartListLock

Typedef Documentation

PSCHEDULE

typedef struct _SCHEDULE PSCHEDULE

SCHEDULE

typedef struct _SCHEDULE SCHEDULE

Function Documentation

CalculateNextStartTime()

VOID CalculateNextStartTime

(

_In_ PJOB

pJob

)

Definition at line 468 of file job.c.

{
    SYSTEMTIME StartTime;
    FILETIME FileTime;
    DWORD_PTR Now;

    TRACE("CalculateNextStartTime(%p)\n", pJob);

    GetLocalTime(&StartTime);

    Now = (DWORD_PTR)StartTime.wHour * 3600000 +
          (DWORD_PTR)StartTime.wMinute * 60000;

    StartTime.wMilliseconds = 0;
    StartTime.wSecond = 0;
    StartTime.wHour = (WORD)(pJob->JobTime / 3600000);
    StartTime.wMinute = (WORD)((pJob->JobTime % 3600000) / 60000);

    if (pJob->DaysOfMonth != 0)
    {
         FIXME("Support DaysOfMonth!\n");
    }
    else if (pJob->DaysOfWeek != 0)
    {
         FIXME("Support DaysOfWeek!\n");
    }
    else
    {
        /* Start the job tomorrow */
        if (Now > pJob->JobTime)
        {
            if (StartTime.wDay + 1 > DaysOfMonth(StartTime.wMonth, StartTime.wYear))
            {
                if (StartTime.wMonth == 12)
                {
                    StartTime.wDay = 1;
                    StartTime.wMonth = 1;
                    StartTime.wYear++;
                }
                else
                {
                    StartTime.wDay = 1;
                    StartTime.wMonth++;
                }
            }
            else
            {
                StartTime.wDay++;
            }
        }
    }

    TRACE("Next start: %02hu:%02hu %02hu.%02hu.%hu\n", StartTime.wHour,
          StartTime.wMinute, StartTime.wDay, StartTime.wMonth, StartTime.wYear);

    SystemTimeToFileTime(&StartTime, &FileTime);
    pJob->StartTime.u.LowPart = FileTime.dwLowDateTime;
    pJob->StartTime.u.HighPart = FileTime.dwHighDateTime;
}

Referenced by LoadJobs(), NetrJobAdd(), and ReScheduleJob().

DaysOfMonth()

static WORD DaysOfMonth ( WORD  wMonth, WORD  wYear  )

static

Definition at line 454 of file job.c.

{
    WORD wDaysArray[13] = {0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};

    if (wMonth == 2 && wYear % 4 == 0 && wYear % 400 != 0)
        return 29;

    return wDaysArray[wMonth];
}

Referenced by CalculateNextStartTime(), and PrintAllJobs().

DeleteJob()

LONG DeleteJob

(

_In_ PJOB

pJob

)

Definition at line 281 of file job.c.

{
    HKEY hJobsKey = NULL;
    LONG lError;

    TRACE("DeleteJob()\n");

    lError = RegCreateKeyExW(HKEY_LOCAL_MACHINE,
                             L"System\\CurrentControlSet\\Services\\Schedule\\Jobs",
                             0,
                             NULL,
                             REG_OPTION_NON_VOLATILE,
                             KEY_WRITE,
                             NULL,
                             &hJobsKey,
                             NULL);
    if (lError != ERROR_SUCCESS)
        goto done;

    lError = RegDeleteKey(hJobsKey,
                          pJob->Name);
    if (lError != ERROR_SUCCESS)
        goto done;

done:
    if (hJobsKey != NULL)
        RegCloseKey(hJobsKey);

    return lError;
}

Referenced by ReScheduleJob().

DumpStartList()

VOID DumpStartList

(

_In_ PLIST_ENTRY

StartListHead

)

Definition at line 582 of file job.c.

{
    PLIST_ENTRY CurrentEntry;
    PJOB CurrentJob;

    CurrentEntry = StartListHead->Flink;
    while (CurrentEntry != StartListHead)
    {
        CurrentJob = CONTAINING_RECORD(CurrentEntry, JOB, StartEntry);

        TRACE("%3lu: %016I64x\n", CurrentJob->JobId, CurrentJob->StartTime.QuadPart);

        CurrentEntry = CurrentEntry->Flink;
    }
}

Referenced by LoadJobs(), NetrJobAdd(), NetrJobDel(), and ReScheduleJob().

GetJobName()

static VOID GetJobName ( HKEY  hJobsKey, PWSTR  pszJobName  )

static

Definition at line 176 of file job.c.

{
    WCHAR szNameBuffer[JOB_NAME_LENGTH];
    FILETIME SystemTime;
    ULONG ulSeed, ulValue;
    HKEY hKey;
    LONG lError;

    GetSystemTimeAsFileTime(&SystemTime);
    ulSeed = SystemTime.dwLowDateTime;
    for (;;)
    {
        ulValue = RtlRandomEx(&ulSeed);
        swprintf(szNameBuffer, L"%08lx", ulValue);

        hKey = NULL;
        lError = RegOpenKeyEx(hJobsKey,
                              szNameBuffer,
                              0,
                              KEY_READ,
                              &hKey);
        if (lError != ERROR_SUCCESS)
        {
            wcscpy(pszJobName, szNameBuffer);
            return;
        }

        RegCloseKey(hKey);
    }
}

Referenced by SaveJob().

GetNextJobTimeout()

DWORD GetNextJobTimeout

(

VOID

)

Definition at line 39 of file job.c.

{
    FILETIME FileTime;
    SYSTEMTIME SystemTime;
    ULARGE_INTEGER CurrentTime, Timeout;
    PJOB pNextJob;

    if (IsListEmpty(&StartListHead))
    {
        TRACE("No job in list! Wait until next update.\n");
        return INFINITE;
    }

    pNextJob = CONTAINING_RECORD((&StartListHead)->Flink, JOB, StartEntry);

    FileTime.dwLowDateTime = pNextJob->StartTime.u.LowPart;
    FileTime.dwHighDateTime = pNextJob->StartTime.u.HighPart;
    FileTimeToSystemTime(&FileTime, &SystemTime);

    TRACE("Start next job (%lu) at %02hu:%02hu %02hu.%02hu.%hu\n",
          pNextJob->JobId, SystemTime.wHour, SystemTime.wMinute,
          SystemTime.wDay, SystemTime.wMonth, SystemTime.wYear);

    GetLocalTime(&SystemTime);
    SystemTimeToFileTime(&SystemTime, &FileTime);

    CurrentTime.u.LowPart = FileTime.dwLowDateTime;
    CurrentTime.u.HighPart = FileTime.dwHighDateTime;

    if (CurrentTime.QuadPart >= pNextJob->StartTime.QuadPart)
    {
        TRACE("Next event has already gone by!\n");
        return 0;
    }

    Timeout.QuadPart = (pNextJob->StartTime.QuadPart - CurrentTime.QuadPart) / 10000;
    if (Timeout.u.HighPart != 0)
    {
        TRACE("Event happens too far in the future!\n");
        return INFINITE;
    }

    TRACE("Timeout: %lu\n", Timeout.u.LowPart);
    return Timeout.u.LowPart;
}

Referenced by SchedServiceMain().

InsertJobIntoStartList()

VOID InsertJobIntoStartList	(	_In_ PLIST_ENTRY	StartListHead,
		_In_ PJOB	pJob
	)

Definition at line 531 of file job.c.

{
    PLIST_ENTRY CurrentEntry, PreviousEntry;
    PJOB CurrentJob;

    if (IsListEmpty(StartListHead))
    {
         InsertHeadList(StartListHead, &pJob->StartEntry);
         return;
    }

    CurrentEntry = StartListHead->Flink;
    while (CurrentEntry != StartListHead)
    {
        CurrentJob = CONTAINING_RECORD(CurrentEntry, JOB, StartEntry);

        if ((CurrentEntry == StartListHead->Flink) &&
            (pJob->StartTime.QuadPart < CurrentJob->StartTime.QuadPart))
        {
            /* Insert before the first entry */
            InsertHeadList(StartListHead, &pJob->StartEntry);
            return;
        }

        if (pJob->StartTime.QuadPart < CurrentJob->StartTime.QuadPart)
        {
            /* Insert between the previous and the current entry */
            PreviousEntry = CurrentEntry->Blink;
            pJob->StartEntry.Blink = PreviousEntry;
            pJob->StartEntry.Flink = CurrentEntry;
            PreviousEntry->Flink = &pJob->StartEntry;
            CurrentEntry->Blink = &pJob->StartEntry;
            return;
        }

        if ((CurrentEntry->Flink == StartListHead) &&
            (pJob->StartTime.QuadPart >= CurrentJob->StartTime.QuadPart))
        {
            /* Insert after the last entry */
            InsertTailList(StartListHead, &pJob->StartEntry);
            return;
        }

        CurrentEntry = CurrentEntry->Flink;
    }
}

Referenced by LoadJobs(), NetrJobAdd(), and ReScheduleJob().

LoadJobs()

LONG LoadJobs

(

VOID

)

Definition at line 315 of file job.c.

{
    SCHEDULE Schedule;
    WCHAR szNameBuffer[JOB_NAME_LENGTH];
    DWORD dwNameLength, dwIndex, dwSize;
    HKEY hJobsKey = NULL, hJobKey = NULL;
    PJOB pJob = NULL;
    LONG lError;

    TRACE("LoadJobs()\n");

    lError = RegCreateKeyExW(HKEY_LOCAL_MACHINE,
                             L"System\\CurrentControlSet\\Services\\Schedule\\Jobs",
                             0,
                             NULL,
                             REG_OPTION_NON_VOLATILE,
                             KEY_READ,
                             NULL,
                             &hJobsKey,
                             NULL);
    if (lError != ERROR_SUCCESS)
        goto done;

    for (dwIndex = 0; dwIndex < 1000; dwIndex++)
    {
        dwNameLength = JOB_NAME_LENGTH;
        lError = RegEnumKeyEx(hJobsKey,
                              dwIndex,
                              szNameBuffer,
                              &dwNameLength,
                              NULL,
                              NULL,
                              NULL,
                              NULL);
        if (lError != ERROR_SUCCESS)
        {
            lError = ERROR_SUCCESS;
            break;
        }

        TRACE("KeyName: %S\n", szNameBuffer);

        lError = RegOpenKeyEx(hJobsKey,
                              szNameBuffer,
                              0,
                              KEY_READ,
                              &hJobKey);
        if (lError != ERROR_SUCCESS)
            break;

        dwSize = sizeof(SCHEDULE);
        lError = RegQueryValueEx(hJobKey,
                                 L"Schedule",
                                 NULL,
                                 NULL,
                                 (PBYTE)&Schedule,
                                 &dwSize);
        if (lError == ERROR_SUCCESS)
        {
            dwSize = 0;
            RegQueryValueEx(hJobKey,
                            L"Command",
                            NULL,
                            NULL,
                            NULL,
                            &dwSize);
            if (dwSize != 0)
            {
                /* Allocate a new job object */
                pJob = HeapAlloc(GetProcessHeap(),
                                 HEAP_ZERO_MEMORY,
                                 sizeof(JOB) + dwSize - sizeof(WCHAR));
                if (pJob == NULL)
                {
                    lError = ERROR_OUTOFMEMORY;
                    break;
                }

                lError = RegQueryValueEx(hJobKey,
                                         L"Command",
                                         NULL,
                                         NULL,
                                         (PBYTE)pJob->Command,
                                         &dwSize);
                if (lError != ERROR_SUCCESS)
                    break;

                wcscpy(pJob->Name, szNameBuffer);
                pJob->JobTime = Schedule.JobTime;
                pJob->DaysOfMonth = Schedule.DaysOfMonth;
                pJob->DaysOfWeek = Schedule.DaysOfWeek;
                pJob->Flags = Schedule.Flags;

                /* Acquire the job list lock exclusively */
                RtlAcquireResourceExclusive(&JobListLock, TRUE);

                /* Assign a new job ID */
                pJob->JobId = dwNextJobId++;
                dwJobCount++;

                /* Append the new job to the job list */
                InsertTailList(&JobListHead, &pJob->JobEntry);

                /* Calculate the next start time */
                CalculateNextStartTime(pJob);

                /* Insert the job into the start list */
                InsertJobIntoStartList(&StartListHead, pJob);
#if 0
                DumpStartList(&StartListHead);
#endif

                /* Release the job list lock */
                RtlReleaseResource(&JobListLock);

                pJob = NULL;
            }
        }

        RegCloseKey(hJobKey);
        hJobKey = NULL;
    }

done:
    if (pJob != NULL)
        HeapFree(GetProcessHeap(), 0, pJob);

    if (hJobKey != NULL)
        RegCloseKey(hJobKey);

    if (hJobsKey != NULL)
        RegCloseKey(hJobsKey);

    return lError;
}

Referenced by ServiceInit().

ReScheduleJob()

static VOID ReScheduleJob ( PJOB  pJob )

static

Definition at line 88 of file job.c.

{
    /* Remove the job from the start list */
    RemoveEntryList(&pJob->StartEntry);

    /* Non-periodical job, remove it */
    if ((pJob->Flags & JOB_RUN_PERIODICALLY) == 0)
    {
        /* Remove the job from the registry */
        DeleteJob(pJob);

        /* Remove the job from the job list */
        RemoveEntryList(&pJob->JobEntry);
        dwJobCount--;

        /* Free the job object */
        HeapFree(GetProcessHeap(), 0, pJob);
        return;
    }

    /* Calculate the next start time */
    CalculateNextStartTime(pJob);

    /* Insert the job into the start list again */
    InsertJobIntoStartList(&StartListHead, pJob);
#if 0
    DumpStartList(&StartListHead);
#endif
}

Referenced by RunNextJob().

RunNextJob()

VOID RunNextJob

(

VOID

)

Definition at line 121 of file job.c.

{
    PROCESS_INFORMATION ProcessInformation;
    STARTUPINFOW StartupInfo;
    BOOL bRet;
    PJOB pNextJob;

    if (IsListEmpty(&StartListHead))
    {
        ERR("No job in list!\n");
        return;
    }

    pNextJob = CONTAINING_RECORD((&StartListHead)->Flink, JOB, StartEntry);

    TRACE("Run job %ld: %S\n", pNextJob->JobId, pNextJob->Command);

    ZeroMemory(&StartupInfo, sizeof(StartupInfo));
    StartupInfo.cb = sizeof(StartupInfo);
    StartupInfo.lpTitle = pNextJob->Command;
    StartupInfo.dwFlags = STARTF_USESHOWWINDOW;
    StartupInfo.wShowWindow = SW_SHOWDEFAULT;

    if ((pNextJob->Flags & JOB_NONINTERACTIVE) == 0)
    {
        StartupInfo.dwFlags |= STARTF_INHERITDESKTOP;
        StartupInfo.lpDesktop = L"WinSta0\\Default";
    }

    bRet = CreateProcessW(NULL,
                          pNextJob->Command,
                          NULL,
                          NULL,
                          FALSE,
                          CREATE_NEW_CONSOLE,
                          NULL,
                          NULL,
                          &StartupInfo,
                          &ProcessInformation);
    if (bRet == FALSE)
    {
        ERR("CreateProcessW() failed (Error %lu)\n", GetLastError());
    }
    else
    {
        CloseHandle(ProcessInformation.hThread);
        CloseHandle(ProcessInformation.hProcess);
    }

    ReScheduleJob(pNextJob);
}

Referenced by SchedServiceMain().

SaveJob()

LONG SaveJob

(

_In_ PJOB

pJob

)

Definition at line 211 of file job.c.

{
    SCHEDULE Schedule;
    HKEY hJobsKey = NULL, hJobKey = NULL;
    LONG lError;

    TRACE("SaveJob()\n");

    lError = RegCreateKeyExW(HKEY_LOCAL_MACHINE,
                             L"System\\CurrentControlSet\\Services\\Schedule\\Jobs",
                             0,
                             NULL,
                             REG_OPTION_NON_VOLATILE,
                             KEY_WRITE,
                             NULL,
                             &hJobsKey,
                             NULL);
    if (lError != ERROR_SUCCESS)
        goto done;

    GetJobName(hJobsKey, pJob->Name);

    lError = RegCreateKeyExW(hJobsKey,
                             pJob->Name,
                             0,
                             NULL,
                             REG_OPTION_NON_VOLATILE,
                             KEY_WRITE,
                             NULL,
                             &hJobKey,
                             NULL);
    if (lError != ERROR_SUCCESS)
        goto done;

    Schedule.JobTime = pJob->JobTime;
    Schedule.DaysOfMonth = pJob->DaysOfMonth;
    Schedule.DaysOfWeek = pJob->DaysOfWeek;
    Schedule.Flags = pJob->Flags;

    lError = RegSetValueEx(hJobKey,
                           L"Schedule",
                           0,
                           REG_BINARY,
                           (PBYTE)&Schedule,
                           sizeof(Schedule));
    if (lError != ERROR_SUCCESS)
        goto done;

    lError = RegSetValueEx(hJobKey,
                           L"Command",
                           0,
                           REG_SZ,
                           (PBYTE)pJob->Command,
                           (wcslen(pJob->Command) + 1) * sizeof(WCHAR));
    if (lError != ERROR_SUCCESS)
        goto done;

done:
    if (hJobKey != NULL)
        RegCloseKey(hJobKey);

    if (hJobsKey != NULL)
        RegCloseKey(hJobsKey);

    return lError;
}

Referenced by NetrJobAdd().

WINE_DEFAULT_DEBUG_CHANNEL()

WINE_DEFAULT_DEBUG_CHANNEL

(

schedsvc

)

Variable Documentation

dwJobCount

DWORD dwJobCount = 0

Definition at line 28 of file job.c.

Referenced by LoadJobs(), NetrJobAdd(), NetrJobDel(), NetrJobEnum(), and ReScheduleJob().

dwNextJobId

DWORD dwNextJobId = 0

Definition at line 27 of file job.c.

Referenced by LoadJobs(), and NetrJobAdd().

JobListHead

LIST_ENTRY JobListHead

Definition at line 29 of file job.c.

Referenced by LoadJobs(), NetrJobAdd(), NetrJobDel(), NetrJobEnum(), NetrJobGetInfo(), and ServiceInit().

JobListLock

RTL_RESOURCE JobListLock

Definition at line 30 of file job.c.

Referenced by LoadJobs(), NetrJobAdd(), NetrJobDel(), NetrJobEnum(), NetrJobGetInfo(), SchedServiceMain(), and ServiceInit().

StartListHead

LIST_ENTRY StartListHead

Definition at line 32 of file job.c.

Referenced by DumpStartList(), GetNextJobTimeout(), InsertJobIntoStartList(), LoadJobs(), NetrJobAdd(), NetrJobDel(), ReScheduleJob(), RunNextJob(), and ServiceInit().

StartListLock

RTL_RESOURCE StartListLock

Definition at line 33 of file job.c.

Referenced by ServiceInit().