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device.go
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device.go
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package service
import (
"bufio"
"errors"
"fmt"
"net"
"os"
"path"
"strconv"
"strings"
"time"
"github.com/1Panel-dev/1Panel/backend/app/dto"
"github.com/1Panel-dev/1Panel/backend/buserr"
"github.com/1Panel-dev/1Panel/backend/constant"
"github.com/1Panel-dev/1Panel/backend/global"
"github.com/1Panel-dev/1Panel/backend/utils/cmd"
"github.com/1Panel-dev/1Panel/backend/utils/common"
"github.com/1Panel-dev/1Panel/backend/utils/ntp"
"github.com/shirou/gopsutil/v3/mem"
)
const defaultDNSPath = "/etc/resolv.conf"
const defaultHostPath = "/etc/hosts"
const defaultFstab = "/etc/fstab"
type DeviceService struct{}
type IDeviceService interface {
LoadBaseInfo() (dto.DeviceBaseInfo, error)
Update(key, value string) error
UpdateHosts(req []dto.HostHelper) error
UpdatePasswd(req dto.ChangePasswd) error
UpdateSwap(req dto.SwapHelper) error
UpdateByConf(req dto.UpdateByNameAndFile) error
LoadTimeZone() ([]string, error)
CheckDNS(key, value string) (bool, error)
LoadConf(name string) (string, error)
Scan() dto.CleanData
Clean(req []dto.Clean)
CleanForCronjob() (string, error)
}
func NewIDeviceService() IDeviceService {
return &DeviceService{}
}
func (u *DeviceService) LoadBaseInfo() (dto.DeviceBaseInfo, error) {
var baseInfo dto.DeviceBaseInfo
baseInfo.LocalTime = time.Now().Format("2006-01-02 15:04:05 MST -0700")
baseInfo.TimeZone = common.LoadTimeZoneByCmd()
baseInfo.DNS = loadDNS()
baseInfo.Hosts = loadHosts()
baseInfo.Hostname = loadHostname()
baseInfo.User = loadUser()
ntp, _ := settingRepo.Get(settingRepo.WithByKey("NtpSite"))
baseInfo.Ntp = ntp.Value
swapInfo, _ := mem.SwapMemory()
baseInfo.SwapMemoryTotal = swapInfo.Total
baseInfo.SwapMemoryAvailable = swapInfo.Free
baseInfo.SwapMemoryUsed = swapInfo.Used
if baseInfo.SwapMemoryTotal != 0 {
baseInfo.SwapDetails = loadSwap()
}
disks := loadDiskInfo()
for _, item := range disks {
baseInfo.MaxSize += item.Free
}
return baseInfo, nil
}
func (u *DeviceService) LoadTimeZone() ([]string, error) {
std, err := cmd.Exec("timedatectl list-timezones")
if err != nil {
return []string{}, err
}
return strings.Split(std, "\n"), nil
}
func (u *DeviceService) CheckDNS(key, value string) (bool, error) {
content, err := os.ReadFile(defaultDNSPath)
if err != nil {
return false, err
}
defer func() { _ = u.UpdateByConf(dto.UpdateByNameAndFile{Name: "DNS", File: string(content)}) }()
if key == "form" {
if err := u.Update("DNS", value); err != nil {
return false, err
}
} else {
if err := u.UpdateByConf(dto.UpdateByNameAndFile{Name: "DNS", File: value}); err != nil {
return false, err
}
}
conn, err := net.DialTimeout("ip4:icmp", "www.baidu.com", time.Second*2)
if err != nil {
return false, err
}
defer conn.Close()
return true, nil
}
func (u *DeviceService) Update(key, value string) error {
switch key {
case "TimeZone":
if cmd.CheckIllegal(value) {
return buserr.New(constant.ErrCmdIllegal)
}
if err := ntp.UpdateSystemTimeZone(value); err != nil {
return err
}
go func() {
_, err := cmd.Exec("systemctl restart 1panel.service")
if err != nil {
global.LOG.Errorf("restart system for new time zone failed, err: %v", err)
}
}()
case "DNS":
if err := updateDNS(strings.Split(value, ",")); err != nil {
return err
}
case "Hostname":
if cmd.CheckIllegal(value) {
return buserr.New(constant.ErrCmdIllegal)
}
std, err := cmd.Execf("%s hostnamectl set-hostname %s", cmd.SudoHandleCmd(), value)
if err != nil {
return errors.New(std)
}
case "Ntp", "LocalTime":
if cmd.CheckIllegal(value) {
return buserr.New(constant.ErrCmdIllegal)
}
ntpValue := value
if key == "LocalTime" {
ntpItem, err := settingRepo.Get(settingRepo.WithByKey("NtpSite"))
if err != nil {
return err
}
ntpValue = ntpItem.Value
} else {
if err := settingRepo.Update("NtpSite", ntpValue); err != nil {
return err
}
}
ntime, err := ntp.GetRemoteTime(ntpValue)
if err != nil {
return err
}
ts := ntime.Format("2006-01-02 15:04:05")
if err := ntp.UpdateSystemTime(ts); err != nil {
return err
}
default:
return fmt.Errorf("not support such key %s", key)
}
return nil
}
func (u *DeviceService) UpdateHosts(req []dto.HostHelper) error {
conf, err := os.ReadFile(defaultHostPath)
if err != nil {
return fmt.Errorf("read namesever conf of %s failed, err: %v", defaultHostPath, err)
}
lines := strings.Split(string(conf), "\n")
newFile := ""
for _, line := range lines {
if len(line) == 0 {
continue
}
parts := strings.Fields(line)
if len(parts) < 2 {
newFile += line + "\n"
continue
}
for index, item := range req {
if item.IP == parts[0] && item.Host == strings.Join(parts[1:], " ") {
newFile += line + "\n"
req = append(req[:index], req[index+1:]...)
break
}
}
}
for _, item := range req {
newFile += fmt.Sprintf("%s %s \n", item.IP, item.Host)
}
file, err := os.OpenFile(defaultHostPath, os.O_WRONLY|os.O_TRUNC, 0640)
if err != nil {
return err
}
defer file.Close()
write := bufio.NewWriter(file)
_, _ = write.WriteString(newFile)
write.Flush()
return nil
}
func (u *DeviceService) UpdatePasswd(req dto.ChangePasswd) error {
if cmd.CheckIllegal(req.User, req.Passwd) {
return buserr.New(constant.ErrCmdIllegal)
}
std, err := cmd.Execf("%s echo '%s:%s' | %s chpasswd", cmd.SudoHandleCmd(), req.User, req.Passwd, cmd.SudoHandleCmd())
if err != nil {
if strings.Contains(err.Error(), "does not exist") {
return buserr.New(constant.ErrNotExistUser)
}
return errors.New(std)
}
return nil
}
func (u *DeviceService) UpdateSwap(req dto.SwapHelper) error {
if cmd.CheckIllegal(req.Path) {
return buserr.New(constant.ErrCmdIllegal)
}
if !req.IsNew {
std, err := cmd.Execf("%s swapoff %s", cmd.SudoHandleCmd(), req.Path)
if err != nil {
return fmt.Errorf("handle swapoff %s failed, err: %s", req.Path, std)
}
}
if req.Size == 0 {
if req.Path == path.Join(global.CONF.System.BaseDir, ".1panel_swap") {
_ = os.Remove(path.Join(global.CONF.System.BaseDir, ".1panel_swap"))
}
return operateSwapWithFile(true, req)
}
std1, err := cmd.Execf("%s dd if=/dev/zero of=%s bs=1024 count=%d", cmd.SudoHandleCmd(), req.Path, req.Size)
if err != nil {
return fmt.Errorf("handle dd path %s failed, err: %s", req.Path, std1)
}
std2, err := cmd.Execf("%s mkswap -f %s", cmd.SudoHandleCmd(), req.Path)
if err != nil {
return fmt.Errorf("handle dd path %s failed, err: %s", req.Path, std2)
}
std3, err := cmd.Execf("%s swapon %s", cmd.SudoHandleCmd(), req.Path)
if err != nil {
_, _ = cmd.Execf("%s swapoff %s", cmd.SudoHandleCmd(), req.Path)
return fmt.Errorf("handle dd path %s failed, err: %s", req.Path, std3)
}
return operateSwapWithFile(false, req)
}
func (u *DeviceService) LoadConf(name string) (string, error) {
pathItem := ""
switch name {
case "DNS":
pathItem = defaultDNSPath
case "Hosts":
pathItem = defaultHostPath
default:
return "", fmt.Errorf("not support such name %s", name)
}
if _, err := os.Stat(pathItem); err != nil {
return "", err
}
content, err := os.ReadFile(pathItem)
if err != nil {
return "", err
}
return string(content), nil
}
func (u *DeviceService) UpdateByConf(req dto.UpdateByNameAndFile) error {
if req.Name != "DNS" && req.Name != "Hosts" {
return fmt.Errorf("not support such name %s", req.Name)
}
path := defaultDNSPath
if req.Name == "Hosts" {
path = defaultHostPath
}
file, err := os.OpenFile(path, os.O_WRONLY|os.O_TRUNC, 0640)
if err != nil {
return err
}
defer file.Close()
write := bufio.NewWriter(file)
_, _ = write.WriteString(req.File)
write.Flush()
return nil
}
func loadDNS() []string {
var list []string
dnsConf, err := os.ReadFile(defaultDNSPath)
if err == nil {
lines := strings.Split(string(dnsConf), "\n")
for _, line := range lines {
if strings.HasPrefix(line, "nameserver ") {
list = append(list, strings.TrimPrefix(line, "nameserver "))
}
}
}
return list
}
func updateDNS(list []string) error {
conf, err := os.ReadFile(defaultDNSPath)
if err != nil {
return fmt.Errorf("read nameserver conf of %s failed, err: %v", defaultDNSPath, err)
}
lines := strings.Split(string(conf), "\n")
newFile := ""
for _, line := range lines {
if len(line) == 0 {
continue
}
parts := strings.Fields(line)
if len(parts) < 2 || parts[0] != "nameserver" {
newFile += line + "\n"
continue
}
itemNs := strings.Join(parts[1:], " ")
for index, item := range list {
if item == itemNs {
newFile += line + "\n"
list = append(list[:index], list[index+1:]...)
break
}
}
}
for _, item := range list {
if len(item) != 0 {
newFile += fmt.Sprintf("nameserver %s \n", item)
}
}
file, err := os.OpenFile(defaultDNSPath, os.O_WRONLY|os.O_TRUNC, 0640)
if err != nil {
return err
}
defer file.Close()
write := bufio.NewWriter(file)
_, _ = write.WriteString(newFile)
write.Flush()
return nil
}
func loadHosts() []dto.HostHelper {
var list []dto.HostHelper
hostConf, err := os.ReadFile(defaultHostPath)
if err == nil {
lines := strings.Split(string(hostConf), "\n")
for _, line := range lines {
parts := strings.Fields(line)
if len(parts) < 2 {
continue
}
list = append(list, dto.HostHelper{IP: parts[0], Host: strings.Join(parts[1:], " ")})
}
}
return list
}
func loadHostname() string {
std, err := cmd.Exec("hostname")
if err != nil {
return ""
}
return strings.ReplaceAll(std, "\n", "")
}
func loadUser() string {
std, err := cmd.Exec("whoami")
if err != nil {
return ""
}
return strings.ReplaceAll(std, "\n", "")
}
func loadSwap() []dto.SwapHelper {
var data []dto.SwapHelper
std, err := cmd.Execf("%s swapon --show --summary", cmd.SudoHandleCmd())
if err != nil {
return data
}
lines := strings.Split(std, "\n")
for index, line := range lines {
if index == 0 {
continue
}
parts := strings.Fields(line)
if len(parts) < 5 {
continue
}
sizeItem, _ := strconv.Atoi(parts[2])
data = append(data, dto.SwapHelper{Path: parts[0], Size: uint64(sizeItem), Used: parts[3]})
}
return data
}
func operateSwapWithFile(delete bool, req dto.SwapHelper) error {
conf, err := os.ReadFile(defaultFstab)
if err != nil {
return fmt.Errorf("read file %s failed, err: %v", defaultFstab, err)
}
lines := strings.Split(string(conf), "\n")
newFile := ""
for _, line := range lines {
if len(line) == 0 {
continue
}
parts := strings.Fields(line)
if len(parts) == 6 && parts[0] == req.Path {
continue
}
newFile += line + "\n"
}
if !delete {
newFile += fmt.Sprintf("%s swap swap defaults 0 0\n", req.Path)
}
file, err := os.OpenFile(defaultFstab, os.O_WRONLY|os.O_TRUNC, 0640)
if err != nil {
return err
}
defer file.Close()
write := bufio.NewWriter(file)
_, _ = write.WriteString(newFile)
write.Flush()
return nil
}