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71 lines
2 KiB
Go
71 lines
2 KiB
Go
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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 eventlog implements access to Windows event log.
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//
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package eventlog
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import (
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"errors"
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"syscall"
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"golang.org/x/sys/windows"
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)
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// Log provides access to the system log.
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type Log struct {
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Handle windows.Handle
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}
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// Open retrieves a handle to the specified event log.
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func Open(source string) (*Log, error) {
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return OpenRemote("", source)
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}
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// OpenRemote does the same as Open, but on different computer host.
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func OpenRemote(host, source string) (*Log, error) {
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if source == "" {
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return nil, errors.New("Specify event log source")
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}
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var s *uint16
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if host != "" {
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s = syscall.StringToUTF16Ptr(host)
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}
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h, err := windows.RegisterEventSource(s, syscall.StringToUTF16Ptr(source))
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if err != nil {
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return nil, err
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}
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return &Log{Handle: h}, nil
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}
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// Close closes event log l.
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func (l *Log) Close() error {
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return windows.DeregisterEventSource(l.Handle)
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}
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func (l *Log) report(etype uint16, eid uint32, msg string) error {
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ss := []*uint16{syscall.StringToUTF16Ptr(msg)}
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return windows.ReportEvent(l.Handle, etype, 0, eid, 0, 1, 0, &ss[0], nil)
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}
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// Info writes an information event msg with event id eid to the end of event log l.
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// When EventCreate.exe is used, eid must be between 1 and 1000.
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func (l *Log) Info(eid uint32, msg string) error {
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return l.report(windows.EVENTLOG_INFORMATION_TYPE, eid, msg)
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}
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// Warning writes an warning event msg with event id eid to the end of event log l.
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// When EventCreate.exe is used, eid must be between 1 and 1000.
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func (l *Log) Warning(eid uint32, msg string) error {
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return l.report(windows.EVENTLOG_WARNING_TYPE, eid, msg)
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}
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// Error writes an error event msg with event id eid to the end of event log l.
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// When EventCreate.exe is used, eid must be between 1 and 1000.
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func (l *Log) Error(eid uint32, msg string) error {
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return l.report(windows.EVENTLOG_ERROR_TYPE, eid, msg)
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}
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