Adding upstream version 2.52.6.
Signed-off-by: Daniel Baumann <daniel@debian.org>
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a960158181
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GPG key ID:
FBB4F0E80A80222F
441 changed files with 95392 additions and 0 deletions
294
internal/gopsutil/net/net_darwin.go
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294
internal/gopsutil/net/net_darwin.go
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//go:build darwin
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package net
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import (
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"context"
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"errors"
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"fmt"
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"os/exec"
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"regexp"
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"strconv"
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"strings"
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"github.com/gofiber/fiber/v2/internal/gopsutil/common"
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)
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var (
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errNetstatHeader = errors.New("Can't parse header of netstat output")
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netstatLinkRegexp = regexp.MustCompile(`^<Link#(\d+)>$`)
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)
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const endOfLine = "\n"
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func parseNetstatLine(line string) (stat *IOCountersStat, linkID *uint, err error) {
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var (
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numericValue uint64
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columns = strings.Fields(line)
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)
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if columns[0] == "Name" {
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err = errNetstatHeader
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return
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}
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// try to extract the numeric value from <Link#123>
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if subMatch := netstatLinkRegexp.FindStringSubmatch(columns[2]); len(subMatch) == 2 {
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numericValue, err = strconv.ParseUint(subMatch[1], 10, 64)
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if err != nil {
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return
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}
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linkIDUint := uint(numericValue)
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linkID = &linkIDUint
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}
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base := 1
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numberColumns := len(columns)
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// sometimes Address is omitted
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if numberColumns < 12 {
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base = 0
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}
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if numberColumns < 11 || numberColumns > 13 {
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err = fmt.Errorf("Line %q do have an invalid number of columns %d", line, numberColumns)
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return
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}
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parsed := make([]uint64, 0, 7)
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vv := []string{
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columns[base+3], // Ipkts == PacketsRecv
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columns[base+4], // Ierrs == Errin
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columns[base+5], // Ibytes == BytesRecv
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columns[base+6], // Opkts == PacketsSent
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columns[base+7], // Oerrs == Errout
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columns[base+8], // Obytes == BytesSent
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}
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if len(columns) == 12 {
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vv = append(vv, columns[base+10])
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}
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for _, target := range vv {
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if target == "-" {
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parsed = append(parsed, 0)
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continue
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}
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if numericValue, err = strconv.ParseUint(target, 10, 64); err != nil {
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return
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}
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parsed = append(parsed, numericValue)
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}
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stat = &IOCountersStat{
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Name: strings.Trim(columns[0], "*"), // remove the * that sometimes is on right on interface
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PacketsRecv: parsed[0],
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Errin: parsed[1],
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BytesRecv: parsed[2],
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PacketsSent: parsed[3],
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Errout: parsed[4],
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BytesSent: parsed[5],
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}
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if len(parsed) == 7 {
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stat.Dropout = parsed[6]
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}
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return
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}
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type netstatInterface struct {
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linkID *uint
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stat *IOCountersStat
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}
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func parseNetstatOutput(output string) ([]netstatInterface, error) {
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var (
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err error
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lines = strings.Split(strings.Trim(output, endOfLine), endOfLine)
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)
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// number of interfaces is number of lines less one for the header
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numberInterfaces := len(lines) - 1
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interfaces := make([]netstatInterface, numberInterfaces)
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// no output beside header
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if numberInterfaces == 0 {
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return interfaces, nil
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}
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for index := 0; index < numberInterfaces; index++ {
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nsIface := netstatInterface{}
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if nsIface.stat, nsIface.linkID, err = parseNetstatLine(lines[index+1]); err != nil {
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return nil, err
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}
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interfaces[index] = nsIface
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}
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return interfaces, nil
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}
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// map that hold the name of a network interface and the number of usage
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type mapInterfaceNameUsage map[string]uint
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func newMapInterfaceNameUsage(ifaces []netstatInterface) mapInterfaceNameUsage {
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output := make(mapInterfaceNameUsage)
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for index := range ifaces {
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if ifaces[index].linkID != nil {
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ifaceName := ifaces[index].stat.Name
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usage, ok := output[ifaceName]
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if ok {
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output[ifaceName] = usage + 1
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} else {
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output[ifaceName] = 1
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}
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}
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}
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return output
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}
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func (min mapInterfaceNameUsage) isTruncated() bool {
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for _, usage := range min {
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if usage > 1 {
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return true
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}
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}
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return false
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}
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func (min mapInterfaceNameUsage) notTruncated() []string {
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output := make([]string, 0)
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for ifaceName, usage := range min {
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if usage == 1 {
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output = append(output, ifaceName)
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}
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}
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return output
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}
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// example of `netstat -ibdnW` output on yosemite
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// Name Mtu Network Address Ipkts Ierrs Ibytes Opkts Oerrs Obytes Coll Drop
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// lo0 16384 <Link#1> 869107 0 169411755 869107 0 169411755 0 0
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// lo0 16384 ::1/128 ::1 869107 - 169411755 869107 - 169411755 - -
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// lo0 16384 127 127.0.0.1 869107 - 169411755 869107 - 169411755 - -
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func IOCounters(pernic bool) ([]IOCountersStat, error) {
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return IOCountersWithContext(context.Background(), pernic)
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}
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func IOCountersWithContext(ctx context.Context, pernic bool) ([]IOCountersStat, error) {
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var (
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ret []IOCountersStat
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retIndex int
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)
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netstat, err := exec.LookPath("netstat")
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if err != nil {
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return nil, err
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}
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// try to get all interface metrics, and hope there won't be any truncated
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out, err := invoke.CommandWithContext(ctx, netstat, "-ibdnW")
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if err != nil {
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return nil, err
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}
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nsInterfaces, err := parseNetstatOutput(string(out))
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if err != nil {
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return nil, err
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}
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ifaceUsage := newMapInterfaceNameUsage(nsInterfaces)
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notTruncated := ifaceUsage.notTruncated()
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ret = make([]IOCountersStat, len(notTruncated))
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if !ifaceUsage.isTruncated() {
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// no truncated interface name, return stats of all interface with <Link#...>
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for index := range nsInterfaces {
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if nsInterfaces[index].linkID != nil {
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ret[retIndex] = *nsInterfaces[index].stat
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retIndex++
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}
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}
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} else {
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// duplicated interface, list all interfaces
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ifconfig, err := exec.LookPath("ifconfig")
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if err != nil {
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return nil, err
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}
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if out, err = invoke.CommandWithContext(ctx, ifconfig, "-l"); err != nil {
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return nil, err
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}
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interfaceNames := strings.Fields(strings.TrimRight(string(out), endOfLine))
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// for each of the interface name, run netstat if we don't have any stats yet
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for _, interfaceName := range interfaceNames {
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truncated := true
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for index := range nsInterfaces {
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if nsInterfaces[index].linkID != nil && nsInterfaces[index].stat.Name == interfaceName {
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// handle the non truncated name to avoid execute netstat for them again
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ret[retIndex] = *nsInterfaces[index].stat
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retIndex++
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truncated = false
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break
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}
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}
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if truncated {
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// run netstat with -I$ifacename
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if out, err = invoke.CommandWithContext(ctx, netstat, "-ibdnWI"+interfaceName); err != nil {
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return nil, err
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}
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parsedIfaces, err := parseNetstatOutput(string(out))
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if err != nil {
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return nil, err
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}
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if len(parsedIfaces) == 0 {
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// interface had been removed since `ifconfig -l` had been executed
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continue
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}
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for index := range parsedIfaces {
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if parsedIfaces[index].linkID != nil {
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ret = append(ret, *parsedIfaces[index].stat)
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break
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}
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}
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}
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}
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}
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if !pernic {
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return getIOCountersAll(ret)
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}
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return ret, nil
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}
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// NetIOCountersByFile is an method which is added just a compatibility for linux.
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func IOCountersByFile(pernic bool, filename string) ([]IOCountersStat, error) {
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return IOCountersByFileWithContext(context.Background(), pernic, filename)
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}
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func IOCountersByFileWithContext(ctx context.Context, pernic bool, filename string) ([]IOCountersStat, error) {
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return IOCounters(pernic)
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}
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func FilterCounters() ([]FilterStat, error) {
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return FilterCountersWithContext(context.Background())
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}
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func FilterCountersWithContext(ctx context.Context) ([]FilterStat, error) {
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return nil, errors.New("NetFilterCounters not implemented for darwin")
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}
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func ConntrackStats(percpu bool) ([]ConntrackStat, error) {
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return ConntrackStatsWithContext(context.Background(), percpu)
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}
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func ConntrackStatsWithContext(ctx context.Context, percpu bool) ([]ConntrackStat, error) {
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return nil, common.ErrNotImplementedError
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}
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// NetProtoCounters returns network statistics for the entire system
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// If protocols is empty then all protocols are returned, otherwise
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// just the protocols in the list are returned.
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// Not Implemented for Darwin
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func ProtoCounters(protocols []string) ([]ProtoCountersStat, error) {
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return ProtoCountersWithContext(context.Background(), protocols)
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}
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func ProtoCountersWithContext(ctx context.Context, protocols []string) ([]ProtoCountersStat, error) {
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return nil, errors.New("NetProtoCounters not implemented for darwin")
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}
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