feat: ntp service

This commit is contained in:
gVisor bot 2023-09-01 03:11:35 +08:00
parent 181ef79e4f
commit 6ffd4a7de1
9 changed files with 177 additions and 4 deletions

View file

@ -18,6 +18,7 @@ import (
"github.com/Dreamacro/clash/component/resolver"
tlsC "github.com/Dreamacro/clash/component/tls"
C "github.com/Dreamacro/clash/constant"
"github.com/Dreamacro/clash/ntp"
"github.com/Dreamacro/clash/transport/gun"
clashVMess "github.com/Dreamacro/clash/transport/vmess"
@ -416,6 +417,7 @@ func NewVmess(option VmessOption) (*Vmess, error) {
if option.AuthenticatedLength {
options = append(options, vmess.ClientWithAuthenticatedLength())
}
options = append(options, vmess.ClientWithTimeFunc(ntp.Now))
client, err := vmess.NewClient(option.UUID, security, option.AlterID, options...)
if err != nil {
return nil, err

View file

@ -22,6 +22,7 @@ import (
"github.com/Dreamacro/clash/common/utils"
"github.com/Dreamacro/clash/log"
"github.com/Dreamacro/clash/ntp"
utls "github.com/sagernet/utls"
"github.com/zhangyunhao116/fastrand"
@ -70,7 +71,7 @@ func GetRealityConn(ctx context.Context, conn net.Conn, ClientFingerprint string
rawSessionID[i] = 0
}
binary.BigEndian.PutUint64(hello.SessionId, uint64(time.Now().Unix()))
binary.BigEndian.PutUint64(hello.SessionId, uint64(ntp.Now().Unix()))
copy(hello.SessionId[8:], realityConfig.ShortID[:])
hello.SessionId[0] = 1

View file

@ -87,6 +87,14 @@ type Controller struct {
Secret string `json:"-"`
}
// NTP config
type NTP struct {
Enable bool `yaml:"enable"`
Server string `yaml:"server"`
Port int `yaml:"port"`
Interval int `yaml:"interval"`
}
// DNS config
type DNS struct {
Enable bool `yaml:"enable"`
@ -151,6 +159,7 @@ type Experimental struct {
type Config struct {
General *General
IPTables *IPTables
NTP *NTP
DNS *DNS
Experimental *Experimental
Hosts *trie.DomainTrie[resolver.HostValue]
@ -167,6 +176,13 @@ type Config struct {
TLS *TLS
}
type RawNTP struct {
Enable bool `yaml:"enable"`
Server string `yaml:"server"`
ServerPort int `yaml:"server-port"`
Interval int `yaml:"interval"`
}
type RawDNS struct {
Enable bool `yaml:"enable"`
PreferH3 bool `yaml:"prefer-h3"`
@ -269,6 +285,7 @@ type RawConfig struct {
ProxyProvider map[string]map[string]any `yaml:"proxy-providers"`
RuleProvider map[string]map[string]any `yaml:"rule-providers"`
Hosts map[string]any `yaml:"hosts"`
NTP RawNTP `yaml:"ntp"`
DNS RawDNS `yaml:"dns"`
Tun RawTun `yaml:"tun"`
TuicServer RawTuicServer `yaml:"tuic-server"`
@ -493,6 +510,9 @@ func ParseRawConfig(rawCfg *RawConfig) (*Config, error) {
}
config.Hosts = hosts
ntpCfg := paresNTP(rawCfg)
config.NTP = ntpCfg
dnsCfg, err := parseDNS(rawCfg, hosts, rules, ruleProviders)
if err != nil {
return nil, err
@ -1132,6 +1152,29 @@ func parseFallbackGeoSite(countries []string, rules []C.Rule) ([]*router.DomainM
return sites, nil
}
func paresNTP(rawCfg *RawConfig) *NTP {
var server = "time.apple.com"
var port = 123
var interval = 30
cfg := rawCfg.NTP
if len(cfg.Server) != 0 {
server = cfg.Server
}
if cfg.ServerPort != 0 {
port = cfg.ServerPort
}
if cfg.Interval != 0 {
interval = cfg.Interval
}
ntpCfg := &NTP{
Enable: cfg.Enable,
Server: server,
Port: port,
Interval: interval,
}
return ntpCfg
}
func parseDNS(rawCfg *RawConfig, hosts *trie.DomainTrie[resolver.HostValue], rules []C.Rule, ruleProviders map[string]providerTypes.RuleProvider) (*DNS, error) {
cfg := rawCfg.DNS
if cfg.Enable && len(cfg.NameServer) == 0 {

1
go.mod
View file

@ -5,6 +5,7 @@ go 1.20
require (
github.com/3andne/restls-client-go v0.1.6
github.com/aead/chacha20 v0.0.0-20180709150244-8b13a72661da
github.com/beevik/ntp v1.3.0
github.com/cilium/ebpf v0.11.0
github.com/coreos/go-iptables v0.7.0
github.com/dlclark/regexp2 v1.10.0

29
go.sum
View file

@ -10,6 +10,8 @@ github.com/ajg/form v1.5.1 h1:t9c7v8JUKu/XxOGBU0yjNpaMloxGEJhUkqFRq0ibGeU=
github.com/ajg/form v1.5.1/go.mod h1:uL1WgH+h2mgNtvBq0339dVnzXdBETtL2LeUXaIv25UY=
github.com/andybalholm/brotli v1.0.5 h1:8uQZIdzKmjc/iuPu7O2ioW48L81FgatrcpfFmiq/cCs=
github.com/andybalholm/brotli v1.0.5/go.mod h1:fO7iG3H7G2nSZ7m0zPUDn85XEX2GTukHGRSepvi9Eig=
github.com/beevik/ntp v1.3.0 h1:/w5VhpW5BGKS37vFm1p9oVk/t4HnnkKZAZIubHM6F7Q=
github.com/beevik/ntp v1.3.0/go.mod h1:vD6h1um4kzXpqmLTuu0cCLcC+NfvC0IC+ltmEDA8E78=
github.com/blang/semver v3.5.1+incompatible/go.mod h1:kRBLl5iJ+tD4TcOOxsy/0fnwebNt5EWlYSAyrTnjyyk=
github.com/chzyer/logex v1.1.10/go.mod h1:+Ywpsq7O8HXn0nuIou7OrIPyXbp3wmkHB+jjWRnGsAI=
github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e/go.mod h1:nSuG5e5PlCu98SY8svDHJxuZscDgtXS6KTTbou5AhLI=
@ -193,6 +195,7 @@ github.com/vishvananda/netns v0.0.0-20210104183010-2eb08e3e575f/go.mod h1:DD4vA1
github.com/vishvananda/netns v0.0.0-20211101163701-50045581ed74 h1:gga7acRE695APm9hlsSMoOoE65U4/TcqNj90mc69Rlg=
github.com/vishvananda/netns v0.0.0-20211101163701-50045581ed74/go.mod h1:DD4vA1DwXk04H54A1oHXtwZmA0grkVMdPxx/VGLCah0=
github.com/yuin/goldmark v1.3.5/go.mod h1:mwnBkeHKe2W/ZEtQ+71ViKU8L12m81fl3OWwC1Zlc8k=
github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
github.com/yusufpapurcu/wmi v1.2.3 h1:E1ctvB7uKFMOJw3fdOW32DwGE9I7t++CRUEMKvFoFiw=
github.com/yusufpapurcu/wmi v1.2.3/go.mod h1:SBZ9tNy3G9/m5Oi98Zks0QjeHVDvuK0qfxQmPyzfmi0=
github.com/zhangyunhao116/fastrand v0.3.0 h1:7bwe124xcckPulX6fxtr2lFdO2KQqaefdtbk+mqO/Ig=
@ -205,6 +208,8 @@ go.uber.org/automaxprocs v1.5.3 h1:kWazyxZUrS3Gs4qUpbwo5kEIMGe/DAvi5Z4tl2NW4j8=
go.uber.org/automaxprocs v1.5.3/go.mod h1:eRbA25aqJrxAbsLO0xy5jVwPt7FQnRgjW+efnwa1WM0=
golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
golang.org/x/crypto v0.10.0/go.mod h1:o4eNf7Ede1fv+hwOwZsTHl9EsPFO6q6ZvYR8vYfY45I=
golang.org/x/crypto v0.12.0 h1:tFM/ta59kqch6LlvYnPa0yx5a83cL2nHflFhYKvv9Yk=
golang.org/x/crypto v0.12.0/go.mod h1:NF0Gs7EO5K4qLn+Ylc+fih8BSTeIjAP05siRnAh98yw=
golang.org/x/exp v0.0.0-20230811145659-89c5cff77bcb h1:mIKbk8weKhSeLH2GmUTrvx8CjkyJmnU1wFmg59CUjFA=
@ -212,15 +217,24 @@ golang.org/x/exp v0.0.0-20230811145659-89c5cff77bcb/go.mod h1:FXUEEKJgO7OQYeo8N0
golang.org/x/lint v0.0.0-20200302205851-738671d3881b/go.mod h1:3xt1FjdF8hUf6vQPIChWIBhFzV8gjjsPE/fR3IyQdNY=
golang.org/x/mod v0.1.1-0.20191105210325-c90efee705ee/go.mod h1:QqPTAvyqsEbceGzBzNggFXnrqF1CaUcvgkdR5Ot7KZg=
golang.org/x/mod v0.4.2/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
golang.org/x/mod v0.8.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
golang.org/x/mod v0.11.0 h1:bUO06HqtnRcc/7l71XBe4WcqTZ+3AH1J59zWDDwLKgU=
golang.org/x/mod v0.11.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
golang.org/x/net v0.0.0-20210405180319-a5a99cb37ef4/go.mod h1:p54w0d4576C0XHj96bSt6lcn1PtDYWL6XObtHCRCNQM=
golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
golang.org/x/net v0.6.0/go.mod h1:2Tu9+aMcznHK/AK1HMvgo6xiTLG5rD5rZLDS+rp2Bjs=
golang.org/x/net v0.10.0/go.mod h1:0qNGK6F8kojg2nk9dLZ2mShWaEBan6FAoqfSigmmuDg=
golang.org/x/net v0.11.0/go.mod h1:2L/ixqYpgIVXmeoSA/4Lu7BzTG4KIyPIryS4IsOd1oQ=
golang.org/x/net v0.14.0 h1:BONx9s002vGdD9umnlX1Po8vOZmrgH34qlHcD1MfK14=
golang.org/x/net v0.14.0/go.mod h1:PpSgVXXLK0OxS0F31C1/tv6XNguvCrnXIDrFMspZIUI=
golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.3.0 h1:ftCYgMx6zT/asHUrPw8BLLscYtGznsLAnjq5RH9P66E=
golang.org/x/sync v0.3.0/go.mod h1:FU7BRWz2tNW+3quACPkgCx/L+uEAv1htQ0V83Z9Rj+Y=
golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
@ -234,17 +248,30 @@ golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7w
golang.org/x/sys v0.0.0-20201204225414-ed752295db88/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20210330210617-4fbd30eecc44/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20210510120138-977fb7262007/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20220622161953-175b2fd9d664/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20220908164124-27713097b956/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.2.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.8.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.9.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.10.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.11.0 h1:eG7RXZHdqOJ1i+0lgLgCpSXAp6M3LYlAo6osgSi0xOM=
golang.org/x/sys v0.11.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
golang.org/x/term v0.5.0/go.mod h1:jMB1sMXY+tzblOD4FWmEbocvup2/aLOaQEp7JmGp78k=
golang.org/x/term v0.8.0/go.mod h1:xPskH00ivmX89bAKVGSKKtLOWNx2+17Eiy94tnKShWo=
golang.org/x/term v0.9.0/go.mod h1:M6DEAAIenWoTxdKrOltXcmDY3rSplQUkrvaDU5FcQyo=
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
golang.org/x/text v0.7.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
golang.org/x/text v0.9.0/go.mod h1:e1OnstbJyHTd6l/uOt8jFFHp6TRDWZR/bV3emEE/zU8=
golang.org/x/text v0.10.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
golang.org/x/text v0.12.0 h1:k+n5B8goJNdU7hSvEtMUz3d1Q6D/XW4COJSJR6fN0mc=
golang.org/x/text v0.12.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
golang.org/x/time v0.3.0 h1:rg5rLMjNzMS1RkNLzCG38eapWhnYLFYXDXj2gOlr8j4=
@ -253,6 +280,8 @@ golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGm
golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
golang.org/x/tools v0.0.0-20200130002326-2f3ba24bd6e7/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
golang.org/x/tools v0.1.1/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk=
golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
golang.org/x/tools v0.6.0/go.mod h1:Xwgl3UAJ/d3gWutnCtw505GrjyAbvKui8lOU390QaIU=
golang.org/x/tools v0.9.1 h1:8WMNJAz3zrtPmnYC7ISf5dEn3MT0gY7jBJfw27yrrLo=
golang.org/x/tools v0.9.1/go.mod h1:owI94Op576fPu3cIGQeHs3joujW/2Oc6MtlxbF5dfNc=
golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=

View file

@ -2,11 +2,15 @@ package executor
import (
"fmt"
"github.com/Dreamacro/clash/ntp"
"net"
"net/netip"
"os"
"runtime"
"strconv"
"strings"
"sync"
"time"
"github.com/Dreamacro/clash/adapter"
"github.com/Dreamacro/clash/adapter/inbound"
@ -92,6 +96,7 @@ func ApplyConfig(cfg *config.Config, force bool) {
updateSniffer(cfg.Sniffer)
updateHosts(cfg.Hosts)
updateGeneral(cfg.General)
updateNTP(cfg.NTP)
updateDNS(cfg.DNS, cfg.RuleProviders, cfg.General.IPv6)
updateListeners(cfg.General, cfg.Listeners, force)
updateIPTables(cfg)
@ -178,6 +183,13 @@ func updateListeners(general *config.General, listeners map[string]C.InboundList
func updateExperimental(c *config.Config) {
}
func updateNTP(c *config.NTP) {
if c.Enable {
ntp.ReCreateNTPService(net.JoinHostPort(c.Server, strconv.Itoa(c.Port)),
time.Duration(c.Interval))
}
}
func updateDNS(c *config.DNS, ruleProvider map[string]provider.RuleProvider, generalIPv6 bool) {
if !c.Enable {
resolver.DefaultResolver = nil

View file

@ -5,7 +5,6 @@ import (
"fmt"
"net"
"strings"
"time"
"github.com/Dreamacro/clash/adapter/inbound"
"github.com/Dreamacro/clash/common/sockopt"
@ -14,6 +13,7 @@ import (
embedSS "github.com/Dreamacro/clash/listener/shadowsocks"
"github.com/Dreamacro/clash/listener/sing"
"github.com/Dreamacro/clash/log"
"github.com/Dreamacro/clash/ntp"
shadowsocks "github.com/metacubex/sing-shadowsocks"
"github.com/metacubex/sing-shadowsocks/shadowaead"
@ -64,7 +64,7 @@ func New(config LC.ShadowsocksServer, tcpIn chan<- C.ConnContext, udpIn chan<- C
case common.Contains(shadowaead.List, config.Cipher):
sl.service, err = shadowaead.NewService(config.Cipher, nil, config.Password, udpTimeout, h)
case common.Contains(shadowaead_2022.List, config.Cipher):
sl.service, err = shadowaead_2022.NewServiceWithPassword(config.Cipher, config.Password, udpTimeout, h, time.Now)
sl.service, err = shadowaead_2022.NewServiceWithPassword(config.Cipher, config.Password, udpTimeout, h, ntp.Now)
default:
err = fmt.Errorf("shadowsocks: unsupported method: %s", config.Cipher)
return embedSS.New(config, tcpIn, udpIn)

View file

@ -10,6 +10,7 @@ import (
C "github.com/Dreamacro/clash/constant"
LC "github.com/Dreamacro/clash/listener/config"
"github.com/Dreamacro/clash/listener/sing"
"github.com/Dreamacro/clash/ntp"
vmess "github.com/metacubex/sing-vmess"
"github.com/sagernet/sing/common"
@ -42,7 +43,7 @@ func New(config LC.VmessServer, tcpIn chan<- C.ConnContext, udpIn chan<- C.Packe
Additions: additions,
}
service := vmess.NewService[string](h, vmess.ServiceWithDisableHeaderProtection())
service := vmess.NewService[string](h, vmess.ServiceWithDisableHeaderProtection(), vmess.ServiceWithTimeFunc(ntp.Now))
err = service.UpdateUsers(
common.Map(config.Users, func(it LC.VmessUser) string {
return it.Username

84
ntp/service.go Normal file
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@ -0,0 +1,84 @@
package ntp
import (
"context"
"github.com/Dreamacro/clash/log"
"github.com/beevik/ntp"
"sync"
"time"
)
var offset time.Duration
var service *Service
type Service struct {
addr string
interval time.Duration
ticker *time.Ticker
ctx context.Context
cancel context.CancelFunc
mu *sync.Mutex
running bool
}
func ReCreateNTPService(addr string, interval time.Duration) {
if service != nil {
service.Stop()
}
ctx, cancel := context.WithCancel(context.Background())
service = &Service{addr: addr, interval: interval, ctx: ctx, cancel: cancel, mu: &sync.Mutex{}}
service.Start()
}
func (srv *Service) Start() {
srv.mu.Lock()
defer srv.mu.Unlock()
log.Infoln("NTP service start")
srv.ticker = time.NewTicker(srv.interval * time.Minute)
service.running = true
go func() {
for {
err := srv.updateTime(srv.addr)
if err != nil {
log.Warnln("updateTime failed:", err)
}
select {
case <-srv.ticker.C:
case <-srv.ctx.Done():
return
}
}
}()
}
func (srv *Service) Stop() {
srv.mu.Lock()
defer srv.mu.Unlock()
srv.ticker.Stop()
srv.cancel()
service.running = false
}
func (srv *Service) updateTime(addr string) error {
response, err := ntp.Query(addr)
if err != nil {
return err
}
localTime := time.Now()
ntpTime := response.Time
offset = localTime.Sub(ntpTime)
if offset > time.Duration(0) {
log.Warnln("System clock is ahead of NTP time by", offset)
} else if offset < time.Duration(0) {
log.Warnln("System clock is behind NTP time by", -offset)
}
return nil
}
func Now() time.Time {
now := time.Now()
if service.running && offset.Abs() > 0 {
now = now.Add(offset)
}
return now
}