204 lines
4.7 KiB
Go
204 lines
4.7 KiB
Go
package types
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import (
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"bufio"
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"bytes"
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"encoding/gob"
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"fmt"
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"io"
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"os"
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"path/filepath"
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"regexp"
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"strconv"
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"strings"
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"time"
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log "github.com/sirupsen/logrus"
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"gopkg.in/natefinch/lumberjack.v2"
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)
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var logFormatter log.Formatter
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var LogOutput *lumberjack.Logger //io.Writer
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var logLevel log.Level
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func SetDefaultLoggerConfig(cfgMode string, cfgFolder string, cfgLevel log.Level, maxSize int, maxFiles int, maxAge int, compress *bool, forceColors bool) error {
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/*Configure logs*/
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if cfgMode == "file" {
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_maxsize := 500
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if maxSize != 0 {
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_maxsize = maxSize
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}
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_maxfiles := 3
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if maxFiles != 0 {
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_maxfiles = maxFiles
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}
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_maxage := 28
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if maxAge != 0 {
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_maxage = maxAge
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}
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_compress := true
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if compress != nil {
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_compress = *compress
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}
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/*cf. https://github.com/natefinch/lumberjack/issues/82
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let's create the file beforehand w/ the right perms */
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fname := cfgFolder + "/crowdsec.log"
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// check if file exists
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_, err := os.Stat(fname)
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// create file if not exists, purposefully ignore errors
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if os.IsNotExist(err) {
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file, _ := os.OpenFile(fname, os.O_RDWR|os.O_CREATE, 0600)
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file.Close()
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}
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LogOutput = &lumberjack.Logger{
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Filename: fname,
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MaxSize: _maxsize,
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MaxBackups: _maxfiles,
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MaxAge: _maxage,
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Compress: _compress,
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}
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log.SetOutput(LogOutput)
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} else if cfgMode != "stdout" {
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return fmt.Errorf("log mode '%s' unknown", cfgMode)
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}
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logLevel = cfgLevel
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log.SetLevel(logLevel)
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logFormatter = &log.TextFormatter{TimestampFormat: "02-01-2006 15:04:05", FullTimestamp: true, ForceColors: forceColors}
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log.SetFormatter(logFormatter)
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return nil
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}
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func ConfigureLogger(clog *log.Logger) error {
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/*Configure logs*/
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if LogOutput != nil {
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clog.SetOutput(LogOutput)
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}
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if logFormatter != nil {
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clog.SetFormatter(logFormatter)
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}
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clog.SetLevel(logLevel)
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return nil
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}
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func Clone(a, b interface{}) error {
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buff := new(bytes.Buffer)
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enc := gob.NewEncoder(buff)
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dec := gob.NewDecoder(buff)
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if err := enc.Encode(a); err != nil {
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return fmt.Errorf("failed cloning %T", a)
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}
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if err := dec.Decode(b); err != nil {
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return fmt.Errorf("failed cloning %T", b)
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}
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return nil
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}
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func ParseDuration(d string) (time.Duration, error) {
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durationStr := d
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if strings.HasSuffix(d, "d") {
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days := strings.Split(d, "d")[0]
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if len(days) == 0 {
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return 0, fmt.Errorf("'%s' can't be parsed as duration", d)
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}
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daysInt, err := strconv.Atoi(days)
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if err != nil {
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return 0, err
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}
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durationStr = strconv.Itoa(daysInt*24) + "h"
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}
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duration, err := time.ParseDuration(durationStr)
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if err != nil {
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return 0, err
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}
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return duration, nil
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}
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/*help to copy the file, ioutil doesn't offer the feature*/
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func copyFileContents(src, dst string) (err error) {
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in, err := os.Open(src)
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if err != nil {
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return
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}
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defer in.Close()
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out, err := os.Create(dst)
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if err != nil {
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return
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}
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defer func() {
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cerr := out.Close()
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if err == nil {
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err = cerr
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}
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}()
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if _, err = io.Copy(out, in); err != nil {
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return
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}
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err = out.Sync()
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return
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}
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/*copy the file, ioutile doesn't offer the feature*/
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func CopyFile(sourceSymLink, destinationFile string) (err error) {
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sourceFile, err := filepath.EvalSymlinks(sourceSymLink)
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if err != nil {
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log.Infof("Not a symlink : %s", err)
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sourceFile = sourceSymLink
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}
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sourceFileStat, err := os.Stat(sourceFile)
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if err != nil {
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return
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}
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if !sourceFileStat.Mode().IsRegular() {
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// cannot copy non-regular files (e.g., directories,
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// symlinks, devices, etc.)
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return fmt.Errorf("copyFile: non-regular source file %s (%q)", sourceFileStat.Name(), sourceFileStat.Mode().String())
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}
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destinationFileStat, err := os.Stat(destinationFile)
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if err != nil {
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if !os.IsNotExist(err) {
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return
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}
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} else {
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if !(destinationFileStat.Mode().IsRegular()) {
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return fmt.Errorf("copyFile: non-regular destination file %s (%q)", destinationFileStat.Name(), destinationFileStat.Mode().String())
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}
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if os.SameFile(sourceFileStat, destinationFileStat) {
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return
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}
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}
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if err = os.Link(sourceFile, destinationFile); err != nil {
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err = copyFileContents(sourceFile, destinationFile)
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}
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return
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}
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func UtcNow() time.Time {
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return time.Now().UTC()
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}
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func GetLineCountForFile(filepath string) int {
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f, err := os.Open(filepath)
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if err != nil {
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log.Fatalf("unable to open log file %s : %s", filepath, err)
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}
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defer f.Close()
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lc := 0
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fs := bufio.NewScanner(f)
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for fs.Scan() {
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lc++
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}
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return lc
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}
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// from https://github.com/acarl005/stripansi
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var reStripAnsi = regexp.MustCompile("[\u001B\u009B][[\\]()#;?]*(?:(?:(?:[a-zA-Z\\d]*(?:;[a-zA-Z\\d]*)*)?\u0007)|(?:(?:\\d{1,4}(?:;\\d{0,4})*)?[\\dA-PRZcf-ntqry=><~]))")
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func StripAnsiString(str string) string {
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// the byte version doesn't strip correctly
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return reStripAnsi.ReplaceAllString(str, "")
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}
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