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Add strategy setting for each dns server

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世界 2022-08-22 12:01:50 +08:00
parent 83cea9475d
commit ac0ead1473
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GPG key ID: CD109927C34A63C4
6 changed files with 47 additions and 35 deletions
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3
.github/update_dependencies.sh vendored
View file

@ -8,6 +8,3 @@ go get -x github.com/sagernet/sing-tun@$(git -C $PROJECTS/sing-tun rev-parse HEA
go get -x github.com/sagernet/sing-shadowsocks@$(git -C $PROJECTS/sing-shadowsocks rev-parse HEAD)
go get -x github.com/sagernet/sing-vmess@$(git -C $PROJECTS/sing-vmess rev-parse HEAD)
go mod tidy
pushd test
go mod tidy
popd

4
go.mod
View file

@ -19,8 +19,8 @@ require (
github.com/sagernet/certmagic v0.0.0-20220819042630-4a57f8b6853a
github.com/sagernet/netlink v0.0.0-20220820041223-3cd8365d17ac
github.com/sagernet/quic-go v0.0.0-20220818150011-de611ab3e2bb
github.com/sagernet/sing v0.0.0-20220821143531-cee85dcd3013
github.com/sagernet/sing-dns v0.0.0-20220819010310-839eab1578c9
github.com/sagernet/sing v0.0.0-20220822031040-57fe2e623c82
github.com/sagernet/sing-dns v0.0.0-20220822023312-3e086b06d666
github.com/sagernet/sing-shadowsocks v0.0.0-20220819002358-7461bb09a8f6
github.com/sagernet/sing-tun v0.0.0-20220821033717-8b6630a3b006
github.com/sagernet/sing-vmess v0.0.0-20220811135656-4f3f07acf9c4

8
go.sum
View file

@ -101,10 +101,10 @@ github.com/sagernet/quic-go v0.0.0-20220818150011-de611ab3e2bb h1:wc0yQ+SBn4TaTY
github.com/sagernet/quic-go v0.0.0-20220818150011-de611ab3e2bb/go.mod h1:MIccjRKnPTjWwAOpl+AUGWOkzyTd9tERytudxu+1ra4=
github.com/sagernet/sing v0.0.0-20220812082120-05f9836bff8f/go.mod h1:QVsS5L/ZA2Q5UhQwLrn0Trw+msNd/NPGEhBKR/ioWiY=
github.com/sagernet/sing v0.0.0-20220817130738-ce854cda8522/go.mod h1:QVsS5L/ZA2Q5UhQwLrn0Trw+msNd/NPGEhBKR/ioWiY=
github.com/sagernet/sing v0.0.0-20220821143531-cee85dcd3013 h1:i5jP3rs+3IFj0OWB22YB3wSJJAoZiBd3YeBk9/vbDHI=
github.com/sagernet/sing v0.0.0-20220821143531-cee85dcd3013/go.mod h1:kZvzh1VDa/Dg/Bt5WaYKU0jl5ept8KKDpl3Ay4gRtRQ=
github.com/sagernet/sing-dns v0.0.0-20220819010310-839eab1578c9 h1:XgXSOJv8e7+98SJvg1f0luuPR33r4yFcmzxb3R//BTI=
github.com/sagernet/sing-dns v0.0.0-20220819010310-839eab1578c9/go.mod h1:MAHy2IKZAA101t3Gr2x0ldwn6XuAs2cjGzSzHy5RhWk=
github.com/sagernet/sing v0.0.0-20220822031040-57fe2e623c82 h1:DUHIA4lKxDqYNQyzb7NjZp+//voV25Ue7QoDjUvhgio=
github.com/sagernet/sing v0.0.0-20220822031040-57fe2e623c82/go.mod h1:kZvzh1VDa/Dg/Bt5WaYKU0jl5ept8KKDpl3Ay4gRtRQ=
github.com/sagernet/sing-dns v0.0.0-20220822023312-3e086b06d666 h1:XUTocA/Ek0dFxUX+xJCWMPPFZCn2GC/uLrBjTSr1vHY=
github.com/sagernet/sing-dns v0.0.0-20220822023312-3e086b06d666/go.mod h1:eDyH7AJmqBGjZQdQmpZIzlbTREudZuWDExMuGKgjRVM=
github.com/sagernet/sing-shadowsocks v0.0.0-20220819002358-7461bb09a8f6 h1:JJfDeYYhWunvtxsU/mOVNTmFQmnzGx9dY034qG6G3g4=
github.com/sagernet/sing-shadowsocks v0.0.0-20220819002358-7461bb09a8f6/go.mod h1:EX3RbZvrwAkPI2nuGa78T2iQXmrkT+/VQtskjou42xM=
github.com/sagernet/sing-tun v0.0.0-20220821033717-8b6630a3b006 h1:c1UyJ5H4CNLsg4GsAnNNoDAnHzLB13pm/T4zzvaWcFo=

1
option/dns.go
View file

@ -28,6 +28,7 @@ type DNSServerOptions struct {
AddressResolver string `json:"address_resolver,omitempty"`
AddressStrategy DomainStrategy `json:"address_strategy,omitempty"`
AddressFallbackDelay Duration `json:"address_fallback_delay,omitempty"`
Strategy DomainStrategy `json:"strategy,omitempty"`
Detour string `json:"detour,omitempty"`
}

30
route/router.go
View file

@ -84,6 +84,7 @@ type Router struct {
defaultTransport dns.Transport
transports []dns.Transport
transportMap map[string]dns.Transport
transportDomainStrategy map[dns.Transport]dns.DomainStrategy
interfaceBindManager control.BindManager
autoDetectInterface bool
defaultInterface string
@ -119,7 +120,7 @@ func NewRouter(ctx context.Context, logger log.ContextLogger, dnsLogger log.Cont
geositeOptions: common.PtrValueOrDefault(options.Geosite),
geositeCache: make(map[string]adapter.Rule),
defaultDetour: options.Final,
dnsClient: dns.NewClient(dns.DomainStrategy(dnsOptions.DNSClientOptions.Strategy), dnsOptions.DNSClientOptions.DisableCache, dnsOptions.DNSClientOptions.DisableExpire),
dnsClient: dns.NewClient(dnsOptions.DNSClientOptions.DisableCache, dnsOptions.DNSClientOptions.DisableExpire),
defaultDomainStrategy: dns.DomainStrategy(dnsOptions.Strategy),
interfaceBindManager: control.NewBindManager(),
autoDetectInterface: options.AutoDetectInterface,
@ -145,6 +146,7 @@ func NewRouter(ctx context.Context, logger log.ContextLogger, dnsLogger log.Cont
transportMap := make(map[string]dns.Transport)
transportTags := make([]string, len(dnsOptions.Servers))
transportTagMap := make(map[string]bool)
transportDomainStrategy := make(map[dns.Transport]dns.DomainStrategy)
for i, server := range dnsOptions.Servers {
var tag string
if server.Tag != "" {
@ -202,6 +204,10 @@ func NewRouter(ctx context.Context, logger log.ContextLogger, dnsLogger log.Cont
if server.Tag != "" {
transportMap[server.Tag] = transport
}
strategy := dns.DomainStrategy(server.Strategy)
if strategy != dns.DomainStrategyAsIS {
transportDomainStrategy[transport] = strategy
}
}
if len(transports) == len(dummyTransportMap) {
break
@ -233,6 +239,7 @@ func NewRouter(ctx context.Context, logger log.ContextLogger, dnsLogger log.Cont
router.defaultTransport = defaultTransport
router.transports = transports
router.transportMap = transportMap
router.transportDomainStrategy = transportDomainStrategy
needInterfaceMonitor := options.AutoDetectInterface ||
C.IsDarwin && common.Any(inbounds, func(inbound option.Inbound) bool {
@ -634,27 +641,6 @@ func (r *Router) match(ctx context.Context, metadata *adapter.InboundContext, de
return nil, defaultOutbound
}
func (r *Router) matchDNS(ctx context.Context) (context.Context, dns.Transport) {
metadata := adapter.ContextFrom(ctx)
if metadata == nil {
panic("no context")
}
for i, rule := range r.dnsRules {
if rule.Match(metadata) {
if rule.DisableCache() {
ctx = dns.ContextWithDisableCache(ctx, true)
}
detour := rule.Outbound()
r.dnsLogger.DebugContext(ctx, "match[", i, "] ", rule.String(), " => ", detour)
if transport, loaded := r.transportMap[detour]; loaded {
return ctx, transport
}
r.dnsLogger.ErrorContext(ctx, "transport not found: ", detour)
}
}
return ctx, r.defaultTransport
}
func (r *Router) InterfaceBindManager() control.BindManager {
return r.interfaceBindManager
}

36
route/router_dns.go
View file

@ -15,6 +15,31 @@ import (
"golang.org/x/net/dns/dnsmessage"
)
func (r *Router) matchDNS(ctx context.Context) (context.Context, dns.Transport, dns.DomainStrategy) {
metadata := adapter.ContextFrom(ctx)
if metadata == nil {
panic("no context")
}
for i, rule := range r.dnsRules {
if rule.Match(metadata) {
if rule.DisableCache() {
ctx = dns.ContextWithDisableCache(ctx, true)
}
detour := rule.Outbound()
r.dnsLogger.DebugContext(ctx, "match[", i, "] ", rule.String(), " => ", detour)
if transport, loaded := r.transportMap[detour]; loaded {
if domainStrategy, dsLoaded := r.transportDomainStrategy[transport]; dsLoaded {
return ctx, transport, domainStrategy
} else {
return ctx, transport, r.defaultDomainStrategy
}
}
r.dnsLogger.ErrorContext(ctx, "transport not found: ", detour)
}
}
return ctx, r.defaultTransport, r.defaultDomainStrategy
}
func (r *Router) Exchange(ctx context.Context, message *dnsmessage.Message) (*dnsmessage.Message, error) {
if len(message.Questions) > 0 {
r.dnsLogger.DebugContext(ctx, "exchange ", formatDNSQuestion(message.Questions[0]))
@ -28,10 +53,10 @@ func (r *Router) Exchange(ctx context.Context, message *dnsmessage.Message) (*dn
metadata.IPVersion = 6
}
}
ctx, transport := r.matchDNS(ctx)
ctx, transport, strategy := r.matchDNS(ctx)
ctx, cancel := context.WithTimeout(ctx, C.DNSTimeout)
defer cancel()
response, err := r.dnsClient.Exchange(ctx, transport, message)
response, err := r.dnsClient.Exchange(ctx, transport, message, strategy)
if err != nil && len(message.Questions) > 0 {
r.dnsLogger.ErrorContext(ctx, E.Cause(err, "exchange failed for ", message.Questions[0].Name.String()))
}
@ -43,7 +68,10 @@ func (r *Router) Exchange(ctx context.Context, message *dnsmessage.Message) (*dn
func (r *Router) Lookup(ctx context.Context, domain string, strategy dns.DomainStrategy) ([]netip.Addr, error) {
r.dnsLogger.DebugContext(ctx, "lookup domain ", domain)
ctx, transport := r.matchDNS(ctx)
ctx, transport, transportStrategy := r.matchDNS(ctx)
if strategy == dns.DomainStrategyAsIS {
strategy = transportStrategy
}
ctx, cancel := context.WithTimeout(ctx, C.DNSTimeout)
defer cancel()
addrs, err := r.dnsClient.Lookup(ctx, transport, domain, strategy)
@ -56,7 +84,7 @@ func (r *Router) Lookup(ctx context.Context, domain string, strategy dns.DomainS
}
func (r *Router) LookupDefault(ctx context.Context, domain string) ([]netip.Addr, error) {
return r.Lookup(ctx, domain, r.defaultDomainStrategy)
return r.Lookup(ctx, domain, dns.DomainStrategyAsIS)
}
func LogDNSAnswers(logger log.ContextLogger, ctx context.Context, domain string, answers []dnsmessage.Resource) {