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Implement resolve(server)

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世界 2024-10-22 22:01:28 +08:00
parent 94cdce9aac
commit e845ca0d00
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GPG key ID: CD109927C34A63C4
3 changed files with 65 additions and 44 deletions
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2
adapter/inbound.go
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@ -50,6 +50,8 @@ type InboundContext struct {
// Deprecated
InboundOptions option.InboundOptions
UDPDisableDomainUnmapping bool
DNSServer string
DestinationAddresses []netip.Addr
SourceGeoIPCode string
GeoIPCode string

2
route/route.go
View file

@ -584,7 +584,7 @@ func (r *Router) actionSniff(
func (r *Router) actionResolve(ctx context.Context, metadata *adapter.InboundContext, action *rule.RuleActionResolve) error {
if metadata.Destination.IsFqdn() {
// TODO: check if WithContext is necessary
metadata.DNSServer = action.Server
addresses, err := r.Lookup(adapter.WithContext(ctx, metadata), metadata.Destination.Fqdn, action.Strategy)
if err != nil {
return err

43
route/route_dns.go
View file

@ -185,6 +185,20 @@ func (r *Router) Lookup(ctx context.Context, domain string, strategy dns.DomainS
cached bool
err error
)
printResult := func() {
if err != nil {
if errors.Is(err, dns.ErrResponseRejectedCached) {
r.dnsLogger.DebugContext(ctx, "response rejected for ", domain, " (cached)")
} else if errors.Is(err, dns.ErrResponseRejected) {
r.dnsLogger.DebugContext(ctx, "response rejected for ", domain)
} else {
r.dnsLogger.ErrorContext(ctx, E.Cause(err, "lookup failed for ", domain))
}
} else if len(responseAddrs) == 0 {
r.dnsLogger.ErrorContext(ctx, "lookup failed for ", domain, ": empty result")
err = dns.RCodeNameError
}
}
responseAddrs, cached = r.dnsClient.LookupCache(ctx, domain, strategy)
if cached {
if len(responseAddrs) == 0 {
@ -196,6 +210,20 @@ func (r *Router) Lookup(ctx context.Context, domain string, strategy dns.DomainS
ctx, metadata := adapter.ExtendContext(ctx)
metadata.Destination = M.Socksaddr{}
metadata.Domain = domain
if metadata.DNSServer != "" {
transport, loaded := r.transportMap[metadata.DNSServer]
if !loaded {
return nil, E.New("transport not found: ", metadata.DNSServer)
}
if strategy == dns.DomainStrategyAsIS {
if transportDomainStrategy, loaded := r.transportDomainStrategy[transport]; loaded {
strategy = transportDomainStrategy
} else {
strategy = r.defaultDomainStrategy
}
}
responseAddrs, err = r.dnsClient.Lookup(ctx, transport, domain, dns.QueryOptions{Strategy: strategy})
} else {
var (
transport dns.Transport
options dns.QueryOptions
@ -220,22 +248,13 @@ func (r *Router) Lookup(ctx context.Context, domain string, strategy dns.DomainS
addressLimit = false
responseAddrs, err = r.dnsClient.Lookup(dnsCtx, transport, domain, options)
}
if err != nil {
if errors.Is(err, dns.ErrResponseRejectedCached) {
r.dnsLogger.DebugContext(ctx, "response rejected for ", domain, " (cached)")
} else if errors.Is(err, dns.ErrResponseRejected) {
r.dnsLogger.DebugContext(ctx, "response rejected for ", domain)
} else {
r.dnsLogger.ErrorContext(ctx, E.Cause(err, "lookup failed for ", domain))
}
} else if len(responseAddrs) == 0 {
r.dnsLogger.ErrorContext(ctx, "lookup failed for ", domain, ": empty result")
err = dns.RCodeNameError
}
if !addressLimit || err == nil {
break
}
printResult()
}
}
printResult()
if len(responseAddrs) > 0 {
r.dnsLogger.InfoContext(ctx, "lookup succeed for ", domain, ": ", strings.Join(F.MapToString(responseAddrs), " "))
}