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FakeDNS return TTL=1 and drop HTTPS QType 65 request 

Co-authored-by: qwerr0
This commit is contained in:
yuhan6665 2024-02-20 20:24:31 -05:00
parent c100d35b88
commit a0f1e1f377
2 changed files with 12 additions and 4 deletions
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6
app/dispatcher/default.go
View File

@ -199,7 +199,7 @@ func (d *DefaultDispatcher) shouldOverride(ctx context.Context, result SniffResu
return true return true
} }
if fkr0, ok := d.fdns.(dns.FakeDNSEngineRev0); ok && protocolString != "bittorrent" && p == "fakedns" && if fkr0, ok := d.fdns.(dns.FakeDNSEngineRev0); ok && protocolString != "bittorrent" && p == "fakedns" &&
destination.Address.Family().IsIP() && fkr0.IsIPInIPPool(destination.Address) { fkr0.IsIPInIPPool(destination.Address) {
newError("Using sniffer ", protocolString, " since the fake DNS missed").WriteToLog(session.ExportIDToError(ctx)) newError("Using sniffer ", protocolString, " since the fake DNS missed").WriteToLog(session.ExportIDToError(ctx))
return true return true
} }
@ -254,7 +254,7 @@ func (d *DefaultDispatcher) Dispatch(ctx context.Context, destination net.Destin
protocol = resComp.ProtocolForDomainResult() protocol = resComp.ProtocolForDomainResult()
} }
isFakeIP := false isFakeIP := false
if fkr0, ok := d.fdns.(dns.FakeDNSEngineRev0); ok && ob.Target.Address.Family().IsIP() && fkr0.IsIPInIPPool(ob.Target.Address) { if fkr0, ok := d.fdns.(dns.FakeDNSEngineRev0); ok && fkr0.IsIPInIPPool(ob.Target.Address) {
isFakeIP = true isFakeIP = true
} }
if sniffingRequest.RouteOnly && protocol != "fakedns" && protocol != "fakedns+others" && !isFakeIP { if sniffingRequest.RouteOnly && protocol != "fakedns" && protocol != "fakedns+others" && !isFakeIP {
@ -307,7 +307,7 @@ func (d *DefaultDispatcher) DispatchLink(ctx context.Context, destination net.De
protocol = resComp.ProtocolForDomainResult() protocol = resComp.ProtocolForDomainResult()
} }
isFakeIP := false isFakeIP := false
if fkr0, ok := d.fdns.(dns.FakeDNSEngineRev0); ok && ob.Target.Address.Family().IsIP() && fkr0.IsIPInIPPool(ob.Target.Address) { if fkr0, ok := d.fdns.(dns.FakeDNSEngineRev0); ok && fkr0.IsIPInIPPool(ob.Target.Address) {
isFakeIP = true isFakeIP = true
} }
if sniffingRequest.RouteOnly && protocol != "fakedns" && protocol != "fakedns+others" && !isFakeIP { if sniffingRequest.RouteOnly && protocol != "fakedns" && protocol != "fakedns+others" && !isFakeIP {

10
proxy/dns/dns.go
View File

@ -27,6 +27,9 @@ func init() {
common.Must(common.RegisterConfig((*Config)(nil), func(ctx context.Context, config interface{}) (interface{}, error) { common.Must(common.RegisterConfig((*Config)(nil), func(ctx context.Context, config interface{}) (interface{}, error) {
h := new(Handler) h := new(Handler)
if err := core.RequireFeatures(ctx, func(dnsClient dns.Client, policyManager policy.Manager) error { if err := core.RequireFeatures(ctx, func(dnsClient dns.Client, policyManager policy.Manager) error {
core.RequireFeatures(ctx, func(fdns dns.FakeDNSEngine) {
h.fdns = fdns
})
return h.Init(config.(*Config), dnsClient, policyManager) return h.Init(config.(*Config), dnsClient, policyManager)
}); err != nil { }); err != nil {
return nil, err return nil, err
@ -41,6 +44,7 @@ type ownLinkVerifier interface {
type Handler struct { type Handler struct {
client dns.Client client dns.Client
fdns dns.FakeDNSEngine
ownLinkVerifier ownLinkVerifier ownLinkVerifier ownLinkVerifier
server net.Destination server net.Destination
timeout time.Duration timeout time.Duration
@ -179,7 +183,7 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, d internet.
if isIPQuery { if isIPQuery {
go h.handleIPQuery(id, qType, domain, writer) go h.handleIPQuery(id, qType, domain, writer)
} }
if isIPQuery || h.nonIPQuery == "drop" { if isIPQuery || h.nonIPQuery == "drop" || qType == 65 {
b.Release() b.Release()
continue continue
} }
@ -244,6 +248,10 @@ func (h *Handler) handleIPQuery(id uint16, qType dnsmessage.Type, domain string,
return return
} }
if fkr0, ok := h.fdns.(dns.FakeDNSEngineRev0); ok && len(ips) > 0 && fkr0.IsIPInIPPool(net.IPAddress(ips[0])) {
ttl = 1
}
switch qType { switch qType {
case dnsmessage.TypeA: case dnsmessage.TypeA:
for i, ip := range ips { for i, ip := range ips {