/
log.go
149 lines (131 loc) · 3.98 KB
/
log.go
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package log
/*
Sliver Implant Framework
Copyright (C) 2019 Bishop Fox
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
import (
"errors"
"fmt"
"os"
"os/user"
"path"
"strings"
"github.com/sirupsen/logrus"
)
var (
// RootLoggerName - Root logger name, contains all log data
RootLoggerName = "root"
// RootLogger - Root Logger
RootLogger = rootLogger()
)
// NamedLogger - Returns a logger wrapped with pkg/stream fields
func NamedLogger(pkg, stream string) *logrus.Entry {
return RootLogger.WithFields(logrus.Fields{
"pkg": pkg,
"stream": stream,
})
}
// GetLogDir - Return the log dir
func GetLogDir() string {
user, _ := user.Current()
dir := path.Join(user.HomeDir, ".sliver")
if _, err := os.Stat(dir); os.IsNotExist(err) {
err = os.MkdirAll(dir, os.ModePerm)
if err != nil {
panic(err)
}
}
logDir := path.Join(dir, "logs")
if _, err := os.Stat(logDir); os.IsNotExist(err) {
err = os.MkdirAll(logDir, os.ModePerm)
if err != nil {
panic(err)
}
}
return logDir
}
// RootLogger - Returns the root logger
func rootLogger() *logrus.Logger {
rootLogger := logrus.New()
rootLogger.Formatter = &logrus.JSONFormatter{}
jsonFilePath := path.Join(GetLogDir(), "sliver.json")
jsonFile, err := os.OpenFile(jsonFilePath, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
if err != nil {
panic(fmt.Sprintf("Failed to open log file %v", err))
}
rootLogger.Out = jsonFile
rootLogger.SetLevel(logrus.DebugLevel)
rootLogger.SetReportCaller(true)
rootLogger.AddHook(NewTxtHook("root"))
return rootLogger
}
// RootLogger - Returns the root logger
func txtLogger() *logrus.Logger {
txtLogger := logrus.New()
txtLogger.Formatter = &logrus.TextFormatter{ForceColors: true}
txtFilePath := path.Join(GetLogDir(), "sliver.log")
txtFile, err := os.OpenFile(txtFilePath, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
if err != nil {
panic(fmt.Sprintf("Failed to open log file %v", err))
}
txtLogger.Out = txtFile
txtLogger.SetLevel(logrus.DebugLevel)
return txtLogger
}
// TxtHook - Hook in a textual version of the logs
type TxtHook struct {
Name string
logger *logrus.Logger
}
// NewTxtHook - returns a new txt hook
func NewTxtHook(name string) *TxtHook {
hook := &TxtHook{
Name: name,
logger: txtLogger(),
}
return hook
}
// Fire - Implements the fire method of the Logrus hook
func (hook *TxtHook) Fire(entry *logrus.Entry) error {
if hook.logger == nil {
return errors.New("No txt logger")
}
// Determine the caller (filename/line number)
srcFile := "<no caller>"
if entry.HasCaller() {
sliverIndex := strings.Index(entry.Caller.File, "sliver")
srcFile = entry.Caller.File
if sliverIndex != -1 {
srcFile = srcFile[sliverIndex:]
}
}
switch entry.Level {
case logrus.PanicLevel:
hook.logger.Panicf("[%s:%d] %s", srcFile, entry.Caller.Line, entry.Message)
case logrus.FatalLevel:
hook.logger.Fatalf("[%s:%d] %s", srcFile, entry.Caller.Line, entry.Message)
case logrus.ErrorLevel:
hook.logger.Errorf("[%s:%d] %s", srcFile, entry.Caller.Line, entry.Message)
case logrus.WarnLevel:
hook.logger.Warnf("[%s:%d] %s", srcFile, entry.Caller.Line, entry.Message)
case logrus.InfoLevel:
hook.logger.Infof("[%s:%d] %s", srcFile, entry.Caller.Line, entry.Message)
case logrus.DebugLevel, logrus.TraceLevel:
hook.logger.Debugf("[%s:%d] %s", srcFile, entry.Caller.Line, entry.Message)
}
return nil
}
// Levels - Hook all levels
func (hook *TxtHook) Levels() []logrus.Level {
return logrus.AllLevels
}