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v2fly/app/dns/fakedns.go
Vigilans f8ac919d66
[app/dns] Support per-client configuration for fakedns (#2212)
* Move `filterIP` from `hosts.go` to `dnscommon.go`

* Implement adding pools for fakedns.HolderMulti

* Implement per-client fakedns for DNS app

* Remove `dns.ClientWithIPOption` and replace with new programming model

* Implement JSON config support for new fakedns config

* Fix lint and tests

* Fix some codacy analysis
2022-12-15 10:38:28 +08:00

88 lines
2.6 KiB
Go

//go:build !confonly
// +build !confonly
package dns
import (
fakedns "github.com/v2fly/v2ray-core/v5/app/dns/fakedns"
"github.com/v2fly/v2ray-core/v5/common/net"
"github.com/v2fly/v2ray-core/v5/features/dns"
)
// FakeDNSClient is an implementation of dns.Client with FakeDNS enabled.
type FakeDNSClient struct {
*DNS
}
// LookupIP implements dns.Client.
func (s *FakeDNSClient) LookupIP(domain string) ([]net.IP, error) {
return s.lookupIPInternal(domain, dns.IPOption{IPv4Enable: true, IPv6Enable: true, FakeEnable: true})
}
// LookupIPv4 implements dns.IPv4Lookup.
func (s *FakeDNSClient) LookupIPv4(domain string) ([]net.IP, error) {
return s.lookupIPInternal(domain, dns.IPOption{IPv4Enable: true, FakeEnable: true})
}
// LookupIPv6 implements dns.IPv6Lookup.
func (s *FakeDNSClient) LookupIPv6(domain string) ([]net.IP, error) {
return s.lookupIPInternal(domain, dns.IPOption{IPv6Enable: true, FakeEnable: true})
}
// FakeDNSEngine is an implementation of dns.FakeDNSEngine based on a fully functional DNS.
type FakeDNSEngine struct {
dns *DNS
fakeHolders *fakedns.HolderMulti
fakeDefault *fakedns.HolderMulti
}
// Type implements common.HasType.
func (*FakeDNSEngine) Type() interface{} {
return dns.FakeDNSEngineType()
}
// Start implements common.Runnable.
func (f *FakeDNSEngine) Start() error {
return f.fakeHolders.Start()
}
// Close implements common.Closable.
func (f *FakeDNSEngine) Close() error {
return f.fakeHolders.Close()
}
// GetFakeIPForDomain implements dns.FakeDNSEngine.
func (f *FakeDNSEngine) GetFakeIPForDomain(domain string) []net.Address {
return f.GetFakeIPForDomain3(domain, true, true)
}
// GetDomainFromFakeDNS implements dns.FakeDNSEngine.
func (f *FakeDNSEngine) GetDomainFromFakeDNS(ip net.Address) string {
return f.fakeHolders.GetDomainFromFakeDNS(ip)
}
// IsIPInIPPool implements dns.FakeDNSEngineRev0.
func (f *FakeDNSEngine) IsIPInIPPool(ip net.Address) bool {
return f.fakeHolders.IsIPInIPPool(ip)
}
// GetFakeIPForDomain3 implements dns.FakeDNSEngineRev0.
func (f *FakeDNSEngine) GetFakeIPForDomain3(domain string, IPv4 bool, IPv6 bool) []net.Address { // nolint: gocritic
option := dns.IPOption{IPv4Enable: IPv4, IPv6Enable: IPv6, FakeEnable: true}
for _, client := range f.dns.sortClients(domain, option) {
fakeServer, ok := client.fakeDNS.(*FakeDNSServer)
if !ok {
continue
}
fakeEngine, ok := fakeServer.fakeDNSEngine.(dns.FakeDNSEngineRev0)
if !ok {
return filterIP(fakeServer.fakeDNSEngine.GetFakeIPForDomain(domain), option)
}
return fakeEngine.GetFakeIPForDomain3(domain, IPv4, IPv6)
}
if f.fakeDefault != nil {
return f.fakeDefault.GetFakeIPForDomain3(domain, IPv4, IPv6)
}
return nil
}