open-consul/vendor/github.com/shirou/gopsutil/net/net_openbsd.go

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// +build openbsd
package net
import (
"context"
"errors"
"fmt"
"os/exec"
"regexp"
"strconv"
"strings"
"syscall"
"github.com/shirou/gopsutil/internal/common"
)
var portMatch = regexp.MustCompile(`(.*)\.(\d+)$`)
func ParseNetstat(output string, mode string,
iocs map[string]IOCountersStat) error {
lines := strings.Split(output, "\n")
exists := make([]string, 0, len(lines)-1)
columns := 6
if mode == "ind" {
columns = 10
}
for _, line := range lines {
values := strings.Fields(line)
if len(values) < 1 || values[0] == "Name" {
continue
}
if common.StringsHas(exists, values[0]) {
// skip if already get
continue
}
if len(values) < columns {
continue
}
base := 1
// sometimes Address is ommitted
if len(values) < columns {
base = 0
}
parsed := make([]uint64, 0, 8)
var vv []string
if mode == "inb" {
vv = []string{
values[base+3], // BytesRecv
values[base+4], // BytesSent
}
} else {
vv = []string{
values[base+3], // Ipkts
values[base+4], // Ierrs
values[base+5], // Opkts
values[base+6], // Oerrs
values[base+8], // Drops
}
}
for _, target := range vv {
if target == "-" {
parsed = append(parsed, 0)
continue
}
t, err := strconv.ParseUint(target, 10, 64)
if err != nil {
return err
}
parsed = append(parsed, t)
}
exists = append(exists, values[0])
n, present := iocs[values[0]]
if !present {
n = IOCountersStat{Name: values[0]}
}
if mode == "inb" {
n.BytesRecv = parsed[0]
n.BytesSent = parsed[1]
} else {
n.PacketsRecv = parsed[0]
n.Errin = parsed[1]
n.PacketsSent = parsed[2]
n.Errout = parsed[3]
n.Dropin = parsed[4]
n.Dropout = parsed[4]
}
iocs[n.Name] = n
}
return nil
}
func IOCounters(pernic bool) ([]IOCountersStat, error) {
return IOCountersWithContext(context.Background(), pernic)
}
func IOCountersWithContext(ctx context.Context, pernic bool) ([]IOCountersStat, error) {
netstat, err := exec.LookPath("netstat")
if err != nil {
return nil, err
}
out, err := invoke.CommandWithContext(ctx, netstat, "-inb")
if err != nil {
return nil, err
}
out2, err := invoke.CommandWithContext(ctx, netstat, "-ind")
if err != nil {
return nil, err
}
iocs := make(map[string]IOCountersStat)
lines := strings.Split(string(out), "\n")
ret := make([]IOCountersStat, 0, len(lines)-1)
err = ParseNetstat(string(out), "inb", iocs)
if err != nil {
return nil, err
}
err = ParseNetstat(string(out2), "ind", iocs)
if err != nil {
return nil, err
}
for _, ioc := range iocs {
ret = append(ret, ioc)
}
if pernic == false {
return getIOCountersAll(ret)
}
return ret, nil
}
// NetIOCountersByFile is an method which is added just a compatibility for linux.
func IOCountersByFile(pernic bool, filename string) ([]IOCountersStat, error) {
return IOCountersByFileWithContext(context.Background(), pernic, filename)
}
func IOCountersByFileWithContext(ctx context.Context, pernic bool, filename string) ([]IOCountersStat, error) {
return IOCounters(pernic)
}
func FilterCounters() ([]FilterStat, error) {
return FilterCountersWithContext(context.Background())
}
func FilterCountersWithContext(ctx context.Context) ([]FilterStat, error) {
return nil, errors.New("NetFilterCounters not implemented for openbsd")
}
// NetProtoCounters returns network statistics for the entire system
// If protocols is empty then all protocols are returned, otherwise
// just the protocols in the list are returned.
// Not Implemented for OpenBSD
func ProtoCounters(protocols []string) ([]ProtoCountersStat, error) {
return ProtoCountersWithContext(context.Background(), protocols)
}
func ProtoCountersWithContext(ctx context.Context, protocols []string) ([]ProtoCountersStat, error) {
return nil, errors.New("NetProtoCounters not implemented for openbsd")
}
func parseNetstatLine(line string) (ConnectionStat, error) {
f := strings.Fields(line)
if len(f) < 5 {
return ConnectionStat{}, fmt.Errorf("wrong line,%s", line)
}
var netType, netFamily uint32
switch f[0] {
case "tcp":
netType = syscall.SOCK_STREAM
netFamily = syscall.AF_INET
case "udp":
netType = syscall.SOCK_DGRAM
netFamily = syscall.AF_INET
case "tcp6":
netType = syscall.SOCK_STREAM
netFamily = syscall.AF_INET6
case "udp6":
netType = syscall.SOCK_DGRAM
netFamily = syscall.AF_INET6
default:
return ConnectionStat{}, fmt.Errorf("unknown type, %s", f[0])
}
laddr, raddr, err := parseNetstatAddr(f[3], f[4], netFamily)
if err != nil {
return ConnectionStat{}, fmt.Errorf("failed to parse netaddr, %s %s", f[3], f[4])
}
n := ConnectionStat{
Fd: uint32(0), // not supported
Family: uint32(netFamily),
Type: uint32(netType),
Laddr: laddr,
Raddr: raddr,
Pid: int32(0), // not supported
}
if len(f) == 6 {
n.Status = f[5]
}
return n, nil
}
func parseNetstatAddr(local string, remote string, family uint32) (laddr Addr, raddr Addr, err error) {
parse := func(l string) (Addr, error) {
matches := portMatch.FindStringSubmatch(l)
if matches == nil {
return Addr{}, fmt.Errorf("wrong addr, %s", l)
}
host := matches[1]
port := matches[2]
if host == "*" {
switch family {
case syscall.AF_INET:
host = "0.0.0.0"
case syscall.AF_INET6:
host = "::"
default:
return Addr{}, fmt.Errorf("unknown family, %d", family)
}
}
lport, err := strconv.Atoi(port)
if err != nil {
return Addr{}, err
}
return Addr{IP: host, Port: uint32(lport)}, nil
}
laddr, err = parse(local)
if remote != "*.*" { // remote addr exists
raddr, err = parse(remote)
if err != nil {
return laddr, raddr, err
}
}
return laddr, raddr, err
}
// Return a list of network connections opened.
func Connections(kind string) ([]ConnectionStat, error) {
return ConnectionsWithContext(context.Background(), kind)
}
func ConnectionsWithContext(ctx context.Context, kind string) ([]ConnectionStat, error) {
var ret []ConnectionStat
args := []string{"-na"}
switch strings.ToLower(kind) {
default:
fallthrough
case "":
fallthrough
case "all":
fallthrough
case "inet":
// nothing to add
case "inet4":
args = append(args, "-finet")
case "inet6":
args = append(args, "-finet6")
case "tcp":
args = append(args, "-ptcp")
case "tcp4":
args = append(args, "-ptcp", "-finet")
case "tcp6":
args = append(args, "-ptcp", "-finet6")
case "udp":
args = append(args, "-pudp")
case "udp4":
args = append(args, "-pudp", "-finet")
case "udp6":
args = append(args, "-pudp", "-finet6")
case "unix":
return ret, common.ErrNotImplementedError
}
netstat, err := exec.LookPath("netstat")
if err != nil {
return nil, err
}
out, err := invoke.CommandWithContext(ctx, netstat, args...)
if err != nil {
return nil, err
}
lines := strings.Split(string(out), "\n")
for _, line := range lines {
if !(strings.HasPrefix(line, "tcp") || strings.HasPrefix(line, "udp")) {
continue
}
n, err := parseNetstatLine(line)
if err != nil {
continue
}
ret = append(ret, n)
}
return ret, nil
}