SagerNet/sing-tun
1
0
Fork 0
mirror of https://github.com/SagerNet/sing-tun.git synced 2025-04-03 20:07:40 +03:00
Code Issues Projects Releases Packages Wiki Activity Actions

Make DNS hijack optional

Browse source
This commit is contained in:
世界 2024-06-01 14:13:56 +08:00
parent 67a5b408ef
commit 65383d3c39
No known key found for this signature in database
GPG key ID: CD109927C34A63C4
7 changed files with 159 additions and 117 deletions
Download patch file Download diff file Expand all files Collapse all files

45
tun_linux.go
View file

@ -359,11 +359,6 @@ func (t *NativeTun) routes(tunLink netlink.Link) ([]netlink.Route, error) {
}), nil
}
const (
ruleStart = 9000
ruleEnd = ruleStart + 10
)
func (t *NativeTun) nextIndex6() int {
ruleList, err := netlink.RuleList(netlink.FAMILY_V6)
if err != nil {
@ -411,9 +406,14 @@ func (t *NativeTun) rules() []*netlink.Rule {
var it *netlink.Rule
excludeRanges := t.options.ExcludedRanges()
ruleStart := t.options.IPRoute2RuleIndex
if ruleStart == 0 {
ruleStart = 9000
}
priority := ruleStart
priority6 := priority
nopPriority := ruleEnd
nopPriority := ruleStart + 10
for _, excludeRange := range excludeRanges {
if p4 {
@ -788,6 +788,11 @@ func (t *NativeTun) unsetRules() error {
return err
}
for _, rule := range ruleList {
ruleStart := t.options.IPRoute2RuleIndex
if ruleStart == 0 {
ruleStart = 9000
}
ruleEnd := ruleStart + 10
if rule.Priority >= ruleStart && rule.Priority <= ruleEnd {
ruleToDel := netlink.NewRule()
ruleToDel.Family = rule.Family
@ -820,20 +825,28 @@ func (t *NativeTun) routeUpdate(event int) {
}
func (t *NativeTun) setSearchDomainForSystemdResolved() {
if t.options.EXP_DisableDNSHijack {
return
}
ctlPath, err := exec.LookPath("resolvectl")
if err != nil {
return
}
var dnsServer []netip.Addr
if len(t.options.Inet4Address) > 0 {
dnsServer = append(dnsServer, t.options.Inet4Address[0].Addr().Next())
dnsServer := t.options.DNSServers
if len(dnsServer) == 0 {
if len(t.options.Inet4Address) > 0 {
dnsServer = append(dnsServer, t.options.Inet4Address[0].Addr().Next())
}
if len(t.options.Inet6Address) > 0 {
dnsServer = append(dnsServer, t.options.Inet6Address[0].Addr().Next())
}
}
if len(t.options.Inet6Address) > 0 {
dnsServer = append(dnsServer, t.options.Inet6Address[0].Addr().Next())
}
go shell.Exec(ctlPath, "domain", t.options.Name, "~.").Run()
if t.options.AutoRoute {
go shell.Exec(ctlPath, "default-route", t.options.Name, "true").Run()
go shell.Exec(ctlPath, append([]string{"dns", t.options.Name}, common.Map(dnsServer, netip.Addr.String)...)...).Run()
if len(dnsServer) == 0 {
return
}
go func() {
_ = shell.Exec(ctlPath, "domain", t.options.Name, "~.").Run()
_ = shell.Exec(ctlPath, "default-route", t.options.Name, "true").Run()
_ = shell.Exec(ctlPath, append([]string{"dns", t.options.Name}, common.Map(dnsServer, netip.Addr.String)...)...).Run()
}()
}