Sweden-Number/dlls/schedsvc/svc_main.c

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/*
* Task Scheduler Service
*
* Copyright 2014 Dmitry Timoshkov
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <stdarg.h>
#include "windef.h"
#include "winbase.h"
#include "winsvc.h"
#include "rpc.h"
#include "atsvc.h"
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#include "schrpc.h"
#include "wine/debug.h"
#include "schedsvc_private.h"
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WINE_DEFAULT_DEBUG_CHANNEL(schedsvc);
static const WCHAR scheduleW[] = {'S','c','h','e','d','u','l','e',0};
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static SERVICE_STATUS_HANDLE schedsvc_handle;
static HANDLE done_event, hjob_queue;
void add_process_to_queue(HANDLE process)
{
if (!AssignProcessToJobObject(hjob_queue, process))
ERR("AssignProcessToJobObject failed\n");
}
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static DWORD WINAPI tasks_monitor_thread(void *arg)
{
static const WCHAR tasksW[] = { '\\','T','a','s','k','s','\\',0 };
WCHAR path[MAX_PATH];
HANDLE htasks, hport, htimer;
JOBOBJECT_ASSOCIATE_COMPLETION_PORT job_info;
OVERLAPPED ov;
LARGE_INTEGER period;
struct
{
FILE_NOTIFY_INFORMATION data;
WCHAR name_buffer[MAX_PATH];
} info;
/* the buffer must be DWORD aligned */
C_ASSERT(!(sizeof(info) & 3));
TRACE("Starting...\n");
load_at_tasks();
check_missed_task_time();
htimer = CreateWaitableTimerW(NULL, FALSE, NULL);
if (htimer == NULL)
{
ERR("CreateWaitableTimer failed\n");
return -1;
}
GetWindowsDirectoryW(path, MAX_PATH);
lstrcatW(path, tasksW);
/* Just in case it's an old Wine prefix with missing c:\windows\tasks */
CreateDirectoryW(path, NULL);
htasks = CreateFileW(path, FILE_LIST_DIRECTORY, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_OVERLAPPED, NULL);
if (htasks == INVALID_HANDLE_VALUE)
{
ERR("Couldn't start monitoring %s for tasks, error %lu\n", debugstr_w(path), GetLastError());
return -1;
}
hjob_queue = CreateJobObjectW(NULL, NULL);
if (!hjob_queue)
{
ERR("CreateJobObject failed\n");
return -1;
}
hport = CreateIoCompletionPort(INVALID_HANDLE_VALUE, NULL, 0, 1);
if (!hport)
{
ERR("CreateIoCompletionPort failed\n");
return -1;
}
job_info.CompletionKey = hjob_queue;
job_info.CompletionPort = hport;
if (!SetInformationJobObject(hjob_queue, JobObjectAssociateCompletionPortInformation, &job_info, sizeof(job_info)))
{
ERR("SetInformationJobObject failed\n");
return -1;
}
memset(&ov, 0, sizeof(ov));
ov.hEvent = CreateEventW(NULL, FALSE, FALSE, NULL);
memset(&info, 0, sizeof(info));
ReadDirectoryChangesW(htasks, &info, sizeof(info), FALSE,
FILE_NOTIFY_CHANGE_FILE_NAME | FILE_NOTIFY_CHANGE_SIZE | FILE_NOTIFY_CHANGE_LAST_WRITE,
NULL, &ov, NULL);
for (;;)
{
HANDLE events[4];
DWORD ret;
events[0] = done_event;
events[1] = htimer;
events[2] = hport;
events[3] = ov.hEvent;
ret = WaitForMultipleObjects(4, events, FALSE, INFINITE);
/* Done event */
if (ret == WAIT_OBJECT_0) break;
/* Next runtime timer */
if (ret == WAIT_OBJECT_0 + 1)
{
check_task_time();
continue;
}
/* Job queue */
if (ret == WAIT_OBJECT_0 + 2)
{
DWORD msg;
ULONG_PTR dummy, pid;
if (GetQueuedCompletionStatus(hport, &msg, &dummy, (OVERLAPPED **)&pid, 0))
{
if (msg == JOB_OBJECT_MSG_EXIT_PROCESS)
{
TRACE("got message: process %#Ix has terminated\n", pid);
update_process_status(pid);
}
else
FIXME("got message %#lx from the job\n", msg);
}
continue;
}
if (info.data.NextEntryOffset)
FIXME("got multiple entries\n");
/* Directory change notification */
info.data.FileName[info.data.FileNameLength/sizeof(WCHAR)] = 0;
switch (info.data.Action)
{
case FILE_ACTION_ADDED:
TRACE("FILE_ACTION_ADDED %s\n", debugstr_w(info.data.FileName));
GetWindowsDirectoryW(path, MAX_PATH);
lstrcatW(path, tasksW);
lstrcatW(path, info.data.FileName);
add_job(path);
break;
case FILE_ACTION_REMOVED:
TRACE("FILE_ACTION_REMOVED %s\n", debugstr_w(info.data.FileName));
GetWindowsDirectoryW(path, MAX_PATH);
lstrcatW(path, tasksW);
lstrcatW(path, info.data.FileName);
remove_job(path);
break;
case FILE_ACTION_MODIFIED:
TRACE("FILE_ACTION_MODIFIED %s\n", debugstr_w(info.data.FileName));
GetWindowsDirectoryW(path, MAX_PATH);
lstrcatW(path, tasksW);
lstrcatW(path, info.data.FileName);
remove_job(path);
add_job(path);
break;
default:
FIXME("%s: action %#lx not handled\n", debugstr_w(info.data.FileName), info.data.Action);
break;
}
check_task_state();
if (get_next_runtime(&period))
{
if (!SetWaitableTimer(htimer, &period, 0, NULL, NULL, FALSE))
ERR("SetWaitableTimer failed\n");
}
memset(&info, 0, sizeof(info));
if (!ReadDirectoryChangesW(htasks, &info, sizeof(info), FALSE,
FILE_NOTIFY_CHANGE_FILE_NAME | FILE_NOTIFY_CHANGE_SIZE | FILE_NOTIFY_CHANGE_LAST_WRITE,
NULL, &ov, NULL)) break;
}
CancelWaitableTimer(htimer);
CloseHandle(htimer);
CloseHandle(ov.hEvent);
CloseHandle(hport);
CloseHandle(hjob_queue);
CloseHandle(htasks);
TRACE("Finished.\n");
return 0;
}
void schedsvc_auto_start(void)
{
static DWORD start_type;
SC_HANDLE scm, service;
QUERY_SERVICE_CONFIGW *cfg;
DWORD cfg_size;
if (start_type == SERVICE_AUTO_START) return;
TRACE("changing service start type to SERVICE_AUTO_START\n");
scm = OpenSCManagerW(NULL, NULL, 0);
if (!scm)
{
WARN("failed to open SCM (%lu)\n", GetLastError());
return;
}
service = OpenServiceW(scm, scheduleW, SERVICE_QUERY_CONFIG | SERVICE_CHANGE_CONFIG);
if (service)
{
if (!QueryServiceConfigW(service, NULL, 0, &cfg_size) && GetLastError() == ERROR_INSUFFICIENT_BUFFER)
{
cfg = HeapAlloc(GetProcessHeap(), 0, cfg_size);
if (cfg)
{
if (QueryServiceConfigW(service, cfg, cfg_size, &cfg_size))
{
start_type = cfg->dwStartType;
if (start_type != SERVICE_AUTO_START)
{
if (ChangeServiceConfigW(service, SERVICE_NO_CHANGE, SERVICE_AUTO_START, SERVICE_NO_CHANGE,
NULL, NULL, NULL, NULL, NULL, NULL, NULL))
start_type = SERVICE_AUTO_START;
}
}
HeapFree(GetProcessHeap(), 0, cfg);
}
}
else
WARN("failed to query service config (%lu)\n", GetLastError());
CloseServiceHandle(service);
}
else
WARN("failed to open service (%lu)\n", GetLastError());
CloseServiceHandle(scm);
}
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static void schedsvc_update_status(DWORD state)
{
SERVICE_STATUS status;
status.dwServiceType = SERVICE_WIN32;
status.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_SHUTDOWN;
status.dwWin32ExitCode = 0;
status.dwServiceSpecificExitCode = 0;
status.dwCheckPoint = 0;
status.dwWaitHint = 0;
status.dwControlsAccepted = 0;
status.dwCurrentState = state;
SetServiceStatus(schedsvc_handle, &status);
}
static void WINAPI schedsvc_handler(DWORD control)
{
TRACE("%#lx\n", control);
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switch (control)
{
case SERVICE_CONTROL_STOP:
case SERVICE_CONTROL_SHUTDOWN:
schedsvc_update_status(SERVICE_STOP_PENDING);
SetEvent(done_event);
break;
default:
schedsvc_update_status(SERVICE_RUNNING);
break;
}
}
static RPC_BINDING_VECTOR *sched_bindings;
static RPC_STATUS RPC_init(void)
{
static WCHAR ncacn_npW[] = { 'n','c','a','c','n','_','n','p',0 };
static WCHAR endpoint_npW[] = { '\\','p','i','p','e','\\','a','t','s','v','c',0 };
static WCHAR ncalrpcW[] = { 'n','c','a','l','r','p','c',0 };
static WCHAR endpoint_lrpcW[] = { 'a','t','s','v','c',0 };
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RPC_STATUS status;
status = RpcServerRegisterIf(ITaskSchedulerService_v1_0_s_ifspec, NULL, NULL);
if (status != RPC_S_OK)
{
ERR("RpcServerRegisterIf error %#lx\n", status);
return status;
}
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status = RpcServerRegisterIf(atsvc_v1_0_s_ifspec, NULL, NULL);
if (status != RPC_S_OK)
{
ERR("RpcServerRegisterIf error %#lx\n", status);
RpcServerUnregisterIf(ITaskSchedulerService_v1_0_s_ifspec, NULL, FALSE);
return status;
}
status = RpcServerUseProtseqEpW(ncacn_npW, RPC_C_PROTSEQ_MAX_REQS_DEFAULT, endpoint_npW, NULL);
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if (status != RPC_S_OK)
{
ERR("RpcServerUseProtseqEp error %#lx\n", status);
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return status;
}
status = RpcServerUseProtseqEpW(ncalrpcW, RPC_C_PROTSEQ_MAX_REQS_DEFAULT, endpoint_lrpcW, NULL);
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if (status != RPC_S_OK)
{
ERR("RpcServerUseProtseqEp error %#lx\n", status);
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return status;
}
status = RpcServerInqBindings(&sched_bindings);
if (status != RPC_S_OK)
{
ERR("RpcServerInqBindings error %#lx\n", status);
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return status;
}
status = RpcEpRegisterW(ITaskSchedulerService_v1_0_s_ifspec, sched_bindings, NULL, NULL);
if (status != RPC_S_OK)
{
ERR("RpcEpRegister error %#lx\n", status);
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return status;
}
status = RpcEpRegisterW(atsvc_v1_0_s_ifspec, sched_bindings, NULL, NULL);
if (status != RPC_S_OK)
{
ERR("RpcEpRegister error %#lx\n", status);
return status;
}
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status = RpcServerListen(1, RPC_C_LISTEN_MAX_CALLS_DEFAULT, TRUE);
if (status != RPC_S_OK)
{
ERR("RpcServerListen error %#lx\n", status);
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return status;
}
return RPC_S_OK;
}
static void RPC_finish(void)
{
RpcMgmtStopServerListening(NULL);
RpcEpUnregister(ITaskSchedulerService_v1_0_s_ifspec, sched_bindings, NULL);
RpcEpUnregister(atsvc_v1_0_s_ifspec, sched_bindings, NULL);
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RpcBindingVectorFree(&sched_bindings);
RpcServerUnregisterIf(ITaskSchedulerService_v1_0_s_ifspec, NULL, FALSE);
RpcServerUnregisterIf(atsvc_v1_0_s_ifspec, NULL, FALSE);
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}
void WINAPI ServiceMain(DWORD argc, LPWSTR *argv)
{
HANDLE thread;
DWORD tid;
TRACE("starting Task Scheduler Service\n");
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schedsvc_handle = RegisterServiceCtrlHandlerW(scheduleW, schedsvc_handler);
if (!schedsvc_handle)
{
ERR("RegisterServiceCtrlHandler error %ld\n", GetLastError());
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return;
}
schedsvc_update_status(SERVICE_START_PENDING);
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done_event = CreateEventW(NULL, TRUE, FALSE, NULL);
thread = CreateThread(NULL, 0, tasks_monitor_thread, NULL, 0, &tid);
if (thread && RPC_init() == RPC_S_OK)
{
schedsvc_update_status(SERVICE_RUNNING);
WaitForSingleObject(thread, INFINITE);
CloseHandle(thread);
RPC_finish();
}
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schedsvc_update_status(SERVICE_STOPPED);
TRACE("exiting Task Scheduler Service\n");
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}
void __RPC_FAR * __RPC_USER MIDL_user_allocate(SIZE_T len)
{
return heap_alloc(len);
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}
void __RPC_USER MIDL_user_free(void __RPC_FAR * ptr)
{
heap_free(ptr);
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}