Vendor golang.org/x/sys/windows/svc
This commit is contained in:
parent
ecf4cddedc
commit
9757a6fb62
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// Copyright 2012 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// +build windows
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package svc
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import (
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"errors"
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"golang.org/x/sys/windows"
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)
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// event represents auto-reset, initially non-signaled Windows event.
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// It is used to communicate between go and asm parts of this package.
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type event struct {
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h windows.Handle
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}
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func newEvent() (*event, error) {
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h, err := windows.CreateEvent(nil, 0, 0, nil)
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if err != nil {
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return nil, err
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}
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return &event{h: h}, nil
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}
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func (e *event) Close() error {
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return windows.CloseHandle(e.h)
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}
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func (e *event) Set() error {
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return windows.SetEvent(e.h)
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}
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func (e *event) Wait() error {
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s, err := windows.WaitForSingleObject(e.h, windows.INFINITE)
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switch s {
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case windows.WAIT_OBJECT_0:
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break
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case windows.WAIT_FAILED:
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return err
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default:
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return errors.New("unexpected result from WaitForSingleObject")
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}
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return nil
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}
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// Copyright 2012 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// +build windows
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// +build !go1.3
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// copied from pkg/runtime
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typedef unsigned int uint32;
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typedef unsigned long long int uint64;
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#ifdef _64BIT
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typedef uint64 uintptr;
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#else
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typedef uint32 uintptr;
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#endif
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// from sys_386.s or sys_amd64.s
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void ·servicemain(void);
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void
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·getServiceMain(uintptr *r)
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{
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*r = (uintptr)·servicemain;
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}
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// Copyright 2014 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// +build windows
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// +build !go1.3
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package svc
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// from go12.c
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func getServiceMain(r *uintptr)
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// Copyright 2014 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// +build windows
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// +build go1.3
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package svc
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import "unsafe"
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const ptrSize = 4 << (^uintptr(0) >> 63) // unsafe.Sizeof(uintptr(0)) but an ideal const
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// Should be a built-in for unsafe.Pointer?
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func add(p unsafe.Pointer, x uintptr) unsafe.Pointer {
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return unsafe.Pointer(uintptr(p) + x)
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}
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// funcPC returns the entry PC of the function f.
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// It assumes that f is a func value. Otherwise the behavior is undefined.
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func funcPC(f interface{}) uintptr {
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return **(**uintptr)(add(unsafe.Pointer(&f), ptrSize))
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}
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// from sys_386.s and sys_amd64.s
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func servicectlhandler(ctl uint32) uintptr
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func servicemain(argc uint32, argv **uint16)
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func getServiceMain(r *uintptr) {
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*r = funcPC(servicemain)
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}
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// Copyright 2012 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// +build windows
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package svc
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import (
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"unsafe"
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"golang.org/x/sys/windows"
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)
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func allocSid(subAuth0 uint32) (*windows.SID, error) {
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var sid *windows.SID
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err := windows.AllocateAndInitializeSid(&windows.SECURITY_NT_AUTHORITY,
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1, subAuth0, 0, 0, 0, 0, 0, 0, 0, &sid)
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if err != nil {
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return nil, err
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}
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return sid, nil
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}
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// IsAnInteractiveSession determines if calling process is running interactively.
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// It queries the process token for membership in the Interactive group.
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// http://stackoverflow.com/questions/2668851/how-do-i-detect-that-my-application-is-running-as-service-or-in-an-interactive-s
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func IsAnInteractiveSession() (bool, error) {
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interSid, err := allocSid(windows.SECURITY_INTERACTIVE_RID)
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if err != nil {
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return false, err
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}
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defer windows.FreeSid(interSid)
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serviceSid, err := allocSid(windows.SECURITY_SERVICE_RID)
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if err != nil {
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return false, err
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}
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defer windows.FreeSid(serviceSid)
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t, err := windows.OpenCurrentProcessToken()
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if err != nil {
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return false, err
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}
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defer t.Close()
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gs, err := t.GetTokenGroups()
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if err != nil {
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return false, err
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}
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p := unsafe.Pointer(&gs.Groups[0])
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groups := (*[2 << 20]windows.SIDAndAttributes)(p)[:gs.GroupCount]
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for _, g := range groups {
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if windows.EqualSid(g.Sid, interSid) {
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return true, nil
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}
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if windows.EqualSid(g.Sid, serviceSid) {
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return false, nil
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}
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}
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return false, nil
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}
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// Copyright 2012 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// +build windows
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// Package svc provides everything required to build Windows service.
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//
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package svc
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import (
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"errors"
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"runtime"
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"syscall"
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"unsafe"
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"golang.org/x/sys/windows"
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)
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// State describes service execution state (Stopped, Running and so on).
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type State uint32
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const (
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Stopped = State(windows.SERVICE_STOPPED)
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StartPending = State(windows.SERVICE_START_PENDING)
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StopPending = State(windows.SERVICE_STOP_PENDING)
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Running = State(windows.SERVICE_RUNNING)
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ContinuePending = State(windows.SERVICE_CONTINUE_PENDING)
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PausePending = State(windows.SERVICE_PAUSE_PENDING)
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Paused = State(windows.SERVICE_PAUSED)
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)
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// Cmd represents service state change request. It is sent to a service
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// by the service manager, and should be actioned upon by the service.
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type Cmd uint32
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const (
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Stop = Cmd(windows.SERVICE_CONTROL_STOP)
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Pause = Cmd(windows.SERVICE_CONTROL_PAUSE)
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Continue = Cmd(windows.SERVICE_CONTROL_CONTINUE)
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Interrogate = Cmd(windows.SERVICE_CONTROL_INTERROGATE)
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Shutdown = Cmd(windows.SERVICE_CONTROL_SHUTDOWN)
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ParamChange = Cmd(windows.SERVICE_CONTROL_PARAMCHANGE)
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NetBindAdd = Cmd(windows.SERVICE_CONTROL_NETBINDADD)
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NetBindRemove = Cmd(windows.SERVICE_CONTROL_NETBINDREMOVE)
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NetBindEnable = Cmd(windows.SERVICE_CONTROL_NETBINDENABLE)
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NetBindDisable = Cmd(windows.SERVICE_CONTROL_NETBINDDISABLE)
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DeviceEvent = Cmd(windows.SERVICE_CONTROL_DEVICEEVENT)
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HardwareProfileChange = Cmd(windows.SERVICE_CONTROL_HARDWAREPROFILECHANGE)
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PowerEvent = Cmd(windows.SERVICE_CONTROL_POWEREVENT)
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SessionChange = Cmd(windows.SERVICE_CONTROL_SESSIONCHANGE)
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)
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// Accepted is used to describe commands accepted by the service.
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// Note that Interrogate is always accepted.
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type Accepted uint32
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const (
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AcceptStop = Accepted(windows.SERVICE_ACCEPT_STOP)
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AcceptShutdown = Accepted(windows.SERVICE_ACCEPT_SHUTDOWN)
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AcceptPauseAndContinue = Accepted(windows.SERVICE_ACCEPT_PAUSE_CONTINUE)
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AcceptParamChange = Accepted(windows.SERVICE_ACCEPT_PARAMCHANGE)
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AcceptNetBindChange = Accepted(windows.SERVICE_ACCEPT_NETBINDCHANGE)
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AcceptHardwareProfileChange = Accepted(windows.SERVICE_ACCEPT_HARDWAREPROFILECHANGE)
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AcceptPowerEvent = Accepted(windows.SERVICE_ACCEPT_POWEREVENT)
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AcceptSessionChange = Accepted(windows.SERVICE_ACCEPT_SESSIONCHANGE)
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)
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// Status combines State and Accepted commands to fully describe running service.
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type Status struct {
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State State
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Accepts Accepted
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CheckPoint uint32 // used to report progress during a lengthy operation
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WaitHint uint32 // estimated time required for a pending operation, in milliseconds
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}
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// ChangeRequest is sent to the service Handler to request service status change.
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type ChangeRequest struct {
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Cmd Cmd
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EventType uint32
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EventData uintptr
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CurrentStatus Status
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}
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// Handler is the interface that must be implemented to build Windows service.
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type Handler interface {
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// Execute will be called by the package code at the start of
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// the service, and the service will exit once Execute completes.
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// Inside Execute you must read service change requests from r and
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// act accordingly. You must keep service control manager up to date
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// about state of your service by writing into s as required.
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// args contains service name followed by argument strings passed
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// to the service.
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// You can provide service exit code in exitCode return parameter,
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// with 0 being "no error". You can also indicate if exit code,
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// if any, is service specific or not by using svcSpecificEC
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// parameter.
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Execute(args []string, r <-chan ChangeRequest, s chan<- Status) (svcSpecificEC bool, exitCode uint32)
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}
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var (
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// These are used by asm code.
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goWaitsH uintptr
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cWaitsH uintptr
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ssHandle uintptr
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sName *uint16
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sArgc uintptr
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sArgv **uint16
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ctlHandlerExProc uintptr
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cSetEvent uintptr
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cWaitForSingleObject uintptr
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cRegisterServiceCtrlHandlerExW uintptr
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)
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func init() {
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k := syscall.MustLoadDLL("kernel32.dll")
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cSetEvent = k.MustFindProc("SetEvent").Addr()
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cWaitForSingleObject = k.MustFindProc("WaitForSingleObject").Addr()
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a := syscall.MustLoadDLL("advapi32.dll")
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cRegisterServiceCtrlHandlerExW = a.MustFindProc("RegisterServiceCtrlHandlerExW").Addr()
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}
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// The HandlerEx prototype also has a context pointer but since we don't use
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// it at start-up time we don't have to pass it over either.
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type ctlEvent struct {
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cmd Cmd
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eventType uint32
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eventData uintptr
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errno uint32
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}
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// service provides access to windows service api.
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type service struct {
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name string
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h windows.Handle
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cWaits *event
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goWaits *event
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c chan ctlEvent
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handler Handler
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}
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func newService(name string, handler Handler) (*service, error) {
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var s service
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var err error
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s.name = name
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s.c = make(chan ctlEvent)
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s.handler = handler
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s.cWaits, err = newEvent()
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if err != nil {
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return nil, err
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}
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s.goWaits, err = newEvent()
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if err != nil {
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s.cWaits.Close()
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return nil, err
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}
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return &s, nil
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}
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func (s *service) close() error {
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s.cWaits.Close()
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s.goWaits.Close()
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return nil
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}
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type exitCode struct {
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isSvcSpecific bool
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errno uint32
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}
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func (s *service) updateStatus(status *Status, ec *exitCode) error {
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if s.h == 0 {
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return errors.New("updateStatus with no service status handle")
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}
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var t windows.SERVICE_STATUS
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t.ServiceType = windows.SERVICE_WIN32_OWN_PROCESS
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t.CurrentState = uint32(status.State)
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if status.Accepts&AcceptStop != 0 {
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t.ControlsAccepted |= windows.SERVICE_ACCEPT_STOP
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}
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if status.Accepts&AcceptShutdown != 0 {
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t.ControlsAccepted |= windows.SERVICE_ACCEPT_SHUTDOWN
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}
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if status.Accepts&AcceptPauseAndContinue != 0 {
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t.ControlsAccepted |= windows.SERVICE_ACCEPT_PAUSE_CONTINUE
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}
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if status.Accepts&AcceptParamChange != 0 {
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t.ControlsAccepted |= windows.SERVICE_ACCEPT_PARAMCHANGE
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}
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if status.Accepts&AcceptNetBindChange != 0 {
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t.ControlsAccepted |= windows.SERVICE_ACCEPT_NETBINDCHANGE
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}
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if status.Accepts&AcceptHardwareProfileChange != 0 {
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t.ControlsAccepted |= windows.SERVICE_ACCEPT_HARDWAREPROFILECHANGE
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}
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if status.Accepts&AcceptPowerEvent != 0 {
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t.ControlsAccepted |= windows.SERVICE_ACCEPT_POWEREVENT
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}
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if status.Accepts&AcceptSessionChange != 0 {
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t.ControlsAccepted |= windows.SERVICE_ACCEPT_SESSIONCHANGE
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}
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if ec.errno == 0 {
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t.Win32ExitCode = windows.NO_ERROR
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t.ServiceSpecificExitCode = windows.NO_ERROR
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} else if ec.isSvcSpecific {
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t.Win32ExitCode = uint32(windows.ERROR_SERVICE_SPECIFIC_ERROR)
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t.ServiceSpecificExitCode = ec.errno
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} else {
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t.Win32ExitCode = ec.errno
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t.ServiceSpecificExitCode = windows.NO_ERROR
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}
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t.CheckPoint = status.CheckPoint
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t.WaitHint = status.WaitHint
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return windows.SetServiceStatus(s.h, &t)
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}
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const (
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sysErrSetServiceStatusFailed = uint32(syscall.APPLICATION_ERROR) + iota
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sysErrNewThreadInCallback
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)
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func (s *service) run() {
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s.goWaits.Wait()
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s.h = windows.Handle(ssHandle)
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argv := (*[100]*int16)(unsafe.Pointer(sArgv))[:sArgc]
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args := make([]string, len(argv))
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for i, a := range argv {
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args[i] = syscall.UTF16ToString((*[1 << 20]uint16)(unsafe.Pointer(a))[:])
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}
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cmdsToHandler := make(chan ChangeRequest)
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changesFromHandler := make(chan Status)
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exitFromHandler := make(chan exitCode)
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go func() {
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ss, errno := s.handler.Execute(args, cmdsToHandler, changesFromHandler)
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exitFromHandler <- exitCode{ss, errno}
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}()
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status := Status{State: Stopped}
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ec := exitCode{isSvcSpecific: true, errno: 0}
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var outch chan ChangeRequest
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inch := s.c
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var cmd Cmd
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var evtype uint32
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var evdata uintptr
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loop:
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for {
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select {
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case r := <-inch:
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if r.errno != 0 {
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ec.errno = r.errno
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break loop
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}
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inch = nil
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outch = cmdsToHandler
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cmd = r.cmd
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evtype = r.eventType
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evdata = r.eventData
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case outch <- ChangeRequest{cmd, evtype, evdata, status}:
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inch = s.c
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outch = nil
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case c := <-changesFromHandler:
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err := s.updateStatus(&c, &ec)
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if err != nil {
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// best suitable error number
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ec.errno = sysErrSetServiceStatusFailed
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if err2, ok := err.(syscall.Errno); ok {
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ec.errno = uint32(err2)
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}
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break loop
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}
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status = c
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case ec = <-exitFromHandler:
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break loop
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}
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}
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s.updateStatus(&Status{State: Stopped}, &ec)
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s.cWaits.Set()
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}
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func newCallback(fn interface{}) (cb uintptr, err error) {
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defer func() {
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r := recover()
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if r == nil {
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return
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}
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cb = 0
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switch v := r.(type) {
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case string:
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err = errors.New(v)
|
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case error:
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err = v
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default:
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err = errors.New("unexpected panic in syscall.NewCallback")
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}
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}()
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return syscall.NewCallback(fn), nil
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}
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|
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// BUG(brainman): There is no mechanism to run multiple services
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// inside one single executable. Perhaps, it can be overcome by
|
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// using RegisterServiceCtrlHandlerEx Windows api.
|
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|
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// Run executes service name by calling appropriate handler function.
|
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func Run(name string, handler Handler) error {
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runtime.LockOSThread()
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|
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tid := windows.GetCurrentThreadId()
|
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|
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s, err := newService(name, handler)
|
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if err != nil {
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return err
|
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}
|
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|
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ctlHandler := func(ctl uint32, evtype uint32, evdata uintptr, context uintptr) uintptr {
|
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e := ctlEvent{cmd: Cmd(ctl), eventType: evtype, eventData: evdata}
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// We assume that this callback function is running on
|
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// the same thread as Run. Nowhere in MS documentation
|
||||
// I could find statement to guarantee that. So putting
|
||||
// check here to verify, otherwise things will go bad
|
||||
// quickly, if ignored.
|
||||
i := windows.GetCurrentThreadId()
|
||||
if i != tid {
|
||||
e.errno = sysErrNewThreadInCallback
|
||||
}
|
||||
s.c <- e
|
||||
// Always return NO_ERROR (0) for now.
|
||||
return 0
|
||||
}
|
||||
|
||||
var svcmain uintptr
|
||||
getServiceMain(&svcmain)
|
||||
t := []windows.SERVICE_TABLE_ENTRY{
|
||||
{ServiceName: syscall.StringToUTF16Ptr(s.name), ServiceProc: svcmain},
|
||||
{ServiceName: nil, ServiceProc: 0},
|
||||
}
|
||||
|
||||
goWaitsH = uintptr(s.goWaits.h)
|
||||
cWaitsH = uintptr(s.cWaits.h)
|
||||
sName = t[0].ServiceName
|
||||
ctlHandlerExProc, err = newCallback(ctlHandler)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
go s.run()
|
||||
|
||||
err = windows.StartServiceCtrlDispatcher(&t[0])
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// StatusHandle returns service status handle. It is safe to call this function
|
||||
// from inside the Handler.Execute because then it is guaranteed to be set.
|
||||
// This code will have to change once multiple services are possible per process.
|
||||
func StatusHandle() windows.Handle {
|
||||
return windows.Handle(ssHandle)
|
||||
}
|
|
@ -0,0 +1,68 @@
|
|||
// Copyright 2012 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
// +build windows
|
||||
|
||||
// func servicemain(argc uint32, argv **uint16)
|
||||
TEXT ·servicemain(SB),7,$0
|
||||
MOVL argc+0(FP), AX
|
||||
MOVL AX, ·sArgc(SB)
|
||||
MOVL argv+4(FP), AX
|
||||
MOVL AX, ·sArgv(SB)
|
||||
|
||||
PUSHL BP
|
||||
PUSHL BX
|
||||
PUSHL SI
|
||||
PUSHL DI
|
||||
|
||||
SUBL $12, SP
|
||||
|
||||
MOVL ·sName(SB), AX
|
||||
MOVL AX, (SP)
|
||||
MOVL $·servicectlhandler(SB), AX
|
||||
MOVL AX, 4(SP)
|
||||
MOVL $0, 8(SP)
|
||||
MOVL ·cRegisterServiceCtrlHandlerExW(SB), AX
|
||||
MOVL SP, BP
|
||||
CALL AX
|
||||
MOVL BP, SP
|
||||
CMPL AX, $0
|
||||
JE exit
|
||||
MOVL AX, ·ssHandle(SB)
|
||||
|
||||
MOVL ·goWaitsH(SB), AX
|
||||
MOVL AX, (SP)
|
||||
MOVL ·cSetEvent(SB), AX
|
||||
MOVL SP, BP
|
||||
CALL AX
|
||||
MOVL BP, SP
|
||||
|
||||
MOVL ·cWaitsH(SB), AX
|
||||
MOVL AX, (SP)
|
||||
MOVL $-1, AX
|
||||
MOVL AX, 4(SP)
|
||||
MOVL ·cWaitForSingleObject(SB), AX
|
||||
MOVL SP, BP
|
||||
CALL AX
|
||||
MOVL BP, SP
|
||||
|
||||
exit:
|
||||
ADDL $12, SP
|
||||
|
||||
POPL DI
|
||||
POPL SI
|
||||
POPL BX
|
||||
POPL BP
|
||||
|
||||
MOVL 0(SP), CX
|
||||
ADDL $12, SP
|
||||
JMP CX
|
||||
|
||||
// I do not know why, but this seems to be the only way to call
|
||||
// ctlHandlerProc on Windows 7.
|
||||
|
||||
// func servicectlhandler(ctl uint32, evtype uint32, evdata uintptr, context uintptr) uintptr {
|
||||
TEXT ·servicectlhandler(SB),7,$0
|
||||
MOVL ·ctlHandlerExProc(SB), CX
|
||||
JMP CX
|
|
@ -0,0 +1,42 @@
|
|||
// Copyright 2012 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
// +build windows
|
||||
|
||||
// func servicemain(argc uint32, argv **uint16)
|
||||
TEXT ·servicemain(SB),7,$0
|
||||
MOVL CX, ·sArgc(SB)
|
||||
MOVQ DX, ·sArgv(SB)
|
||||
|
||||
SUBQ $32, SP // stack for the first 4 syscall params
|
||||
|
||||
MOVQ ·sName(SB), CX
|
||||
MOVQ $·servicectlhandler(SB), DX
|
||||
// BUG(pastarmovj): Figure out a way to pass in context in R8.
|
||||
MOVQ ·cRegisterServiceCtrlHandlerExW(SB), AX
|
||||
CALL AX
|
||||
CMPQ AX, $0
|
||||
JE exit
|
||||
MOVQ AX, ·ssHandle(SB)
|
||||
|
||||
MOVQ ·goWaitsH(SB), CX
|
||||
MOVQ ·cSetEvent(SB), AX
|
||||
CALL AX
|
||||
|
||||
MOVQ ·cWaitsH(SB), CX
|
||||
MOVQ $4294967295, DX
|
||||
MOVQ ·cWaitForSingleObject(SB), AX
|
||||
CALL AX
|
||||
|
||||
exit:
|
||||
ADDQ $32, SP
|
||||
RET
|
||||
|
||||
// I do not know why, but this seems to be the only way to call
|
||||
// ctlHandlerProc on Windows 7.
|
||||
|
||||
// func ·servicectlhandler(ctl uint32, evtype uint32, evdata uintptr, context uintptr) uintptr {
|
||||
TEXT ·servicectlhandler(SB),7,$0
|
||||
MOVQ ·ctlHandlerExProc(SB), AX
|
||||
JMP AX
|
|
@ -242,6 +242,7 @@
|
|||
{"path":"golang.org/x/sys/cpu","checksumSHA1":"REkmyB368pIiip76LiqMLspgCRk=","revision":"ad87a3a340fa7f3bed189293fbfa7a9b7e021ae1","revisionTime":"2018-06-18T16:37:21Z"},
|
||||
{"path":"golang.org/x/sys/unix","checksumSHA1":"vlicYp+fe4ECQ+5QqpAk36VRA3s=","revision":"cd2c276457edda6df7fb04895d3fd6a6add42926","revisionTime":"2017-07-17T10:05:24Z"},
|
||||
{"path":"golang.org/x/sys/windows","checksumSHA1":"Pki0iA65Dtsjh4gtabPkp/lOa2I=","revision":"cd2c276457edda6df7fb04895d3fd6a6add42926","revisionTime":"2017-07-17T10:05:24Z"},
|
||||
{"path":"golang.org/x/sys/windows/svc","checksumSHA1":"Fes9OIPy6lS/ghzodqAbMlZZTTQ=","revision":"1b2967e3c290b7c545b3db0deeda16e9be4f98a2","revisionTime":"2018-07-06T09:56:39Z"},
|
||||
{"path":"golang.org/x/text/secure/bidirule","checksumSHA1":"tltivJ/uj/lqLk05IqGfCv2F/E8=","revision":"88f656faf3f37f690df1a32515b479415e1a6769","revisionTime":"2017-10-26T07:52:28Z"},
|
||||
{"path":"golang.org/x/text/transform","checksumSHA1":"ziMb9+ANGRJSSIuxYdRbA+cDRBQ=","revision":"88f656faf3f37f690df1a32515b479415e1a6769","revisionTime":"2017-10-26T07:52:28Z"},
|
||||
{"path":"golang.org/x/text/unicode/bidi","checksumSHA1":"tk+lpF2CDV7e5RwwRY5ZTCGrd9o=","revision":"88f656faf3f37f690df1a32515b479415e1a6769","revisionTime":"2017-10-26T07:52:28Z"},
|
||||
|
|
Loading…
Reference in New Issue