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