mirror of
https://github.com/SagerNet/sing-box.git
synced 2024-09-20 02:27:50 +00:00
752 lines
22 KiB
Go
752 lines
22 KiB
Go
package route
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import (
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"context"
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"io"
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"net"
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"net/http"
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"net/netip"
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"net/url"
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"os"
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"path/filepath"
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"reflect"
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"strings"
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"time"
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"github.com/sagernet/sing-box/adapter"
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"github.com/sagernet/sing-box/common/dialer"
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"github.com/sagernet/sing-box/common/geoip"
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"github.com/sagernet/sing-box/common/geosite"
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"github.com/sagernet/sing-box/common/iffmonitor"
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"github.com/sagernet/sing-box/common/sniff"
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C "github.com/sagernet/sing-box/constant"
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"github.com/sagernet/sing-box/dns"
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"github.com/sagernet/sing-box/log"
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"github.com/sagernet/sing-box/option"
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"github.com/sagernet/sing/common"
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"github.com/sagernet/sing/common/buf"
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"github.com/sagernet/sing/common/bufio"
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E "github.com/sagernet/sing/common/exceptions"
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F "github.com/sagernet/sing/common/format"
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M "github.com/sagernet/sing/common/metadata"
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N "github.com/sagernet/sing/common/network"
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"github.com/sagernet/sing/common/rw"
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"golang.org/x/net/dns/dnsmessage"
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)
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var _ adapter.Router = (*Router)(nil)
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type Router struct {
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ctx context.Context
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logger log.Logger
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dnsLogger log.Logger
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outboundByTag map[string]adapter.Outbound
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rules []adapter.Rule
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defaultDetour string
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defaultOutboundForConnection adapter.Outbound
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defaultOutboundForPacketConnection adapter.Outbound
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needGeoIPDatabase bool
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needGeositeDatabase bool
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geoIPOptions option.GeoIPOptions
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geositeOptions option.GeositeOptions
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geoIPReader *geoip.Reader
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geositeReader *geosite.Reader
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geositeCache map[string]adapter.Rule
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dnsClient adapter.DNSClient
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defaultDomainStrategy C.DomainStrategy
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dnsRules []adapter.Rule
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defaultTransport adapter.DNSTransport
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transports []adapter.DNSTransport
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transportMap map[string]adapter.DNSTransport
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autoDetectInterface bool
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interfaceMonitor iffmonitor.InterfaceMonitor
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}
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func NewRouter(ctx context.Context, logger log.Logger, options option.RouteOptions, dnsOptions option.DNSOptions) (*Router, error) {
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router := &Router{
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ctx: ctx,
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logger: logger.WithPrefix("router: "),
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dnsLogger: logger.WithPrefix("dns: "),
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outboundByTag: make(map[string]adapter.Outbound),
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rules: make([]adapter.Rule, 0, len(options.Rules)),
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dnsRules: make([]adapter.Rule, 0, len(dnsOptions.Rules)),
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needGeoIPDatabase: hasGeoRule(options.Rules, isGeoIPRule) || hasGeoDNSRule(dnsOptions.Rules, isGeoIPDNSRule),
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needGeositeDatabase: hasGeoRule(options.Rules, isGeositeRule) || hasGeoDNSRule(dnsOptions.Rules, isGeositeDNSRule),
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geoIPOptions: common.PtrValueOrDefault(options.GeoIP),
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geositeOptions: common.PtrValueOrDefault(options.Geosite),
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geositeCache: make(map[string]adapter.Rule),
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defaultDetour: options.Final,
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dnsClient: dns.NewClient(dnsOptions.DNSClientOptions),
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defaultDomainStrategy: C.DomainStrategy(dnsOptions.Strategy),
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autoDetectInterface: options.AutoDetectInterface,
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}
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for i, ruleOptions := range options.Rules {
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routeRule, err := NewRule(router, logger, ruleOptions)
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if err != nil {
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return nil, E.Cause(err, "parse rule[", i, "]")
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}
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router.rules = append(router.rules, routeRule)
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}
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for i, dnsRuleOptions := range dnsOptions.Rules {
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dnsRule, err := NewDNSRule(router, logger, dnsRuleOptions)
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if err != nil {
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return nil, E.Cause(err, "parse dns rule[", i, "]")
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}
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router.dnsRules = append(router.dnsRules, dnsRule)
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}
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transports := make([]adapter.DNSTransport, len(dnsOptions.Servers))
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dummyTransportMap := make(map[string]adapter.DNSTransport)
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transportMap := make(map[string]adapter.DNSTransport)
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transportTags := make([]string, len(dnsOptions.Servers))
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transportTagMap := make(map[string]bool)
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for i, server := range dnsOptions.Servers {
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var tag string
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if server.Tag != "" {
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tag = server.Tag
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} else {
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tag = F.ToString(i)
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}
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transportTags[i] = tag
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transportTagMap[tag] = true
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}
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for {
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lastLen := len(dummyTransportMap)
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for i, server := range dnsOptions.Servers {
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tag := transportTags[i]
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if _, exists := dummyTransportMap[tag]; exists {
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continue
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}
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var detour N.Dialer
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if server.Detour == "" {
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detour = dialer.NewRouter(router)
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} else {
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detour = dialer.NewDetour(router, server.Detour)
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}
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if server.Address != "local" {
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serverURL, err := url.Parse(server.Address)
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if err != nil {
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return nil, err
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}
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serverAddress := serverURL.Hostname()
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if serverAddress == "" {
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serverAddress = server.Address
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}
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_, notIpAddress := netip.ParseAddr(serverAddress)
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if server.AddressResolver != "" {
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if !transportTagMap[server.AddressResolver] {
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return nil, E.New("parse dns server[", tag, "]: address resolver not found: ", server.AddressResolver)
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}
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if upstream, exists := dummyTransportMap[server.AddressResolver]; exists {
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detour = dns.NewDialerWrapper(detour, C.DomainStrategy(server.AddressStrategy), router.dnsClient, upstream)
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} else {
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continue
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}
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} else if notIpAddress != nil {
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return nil, E.New("parse dns server[", tag, "]: missing address_resolver")
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}
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}
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transport, err := dns.NewTransport(ctx, detour, logger, server.Address)
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if err != nil {
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return nil, E.Cause(err, "parse dns server[", tag, "]")
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}
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transports[i] = transport
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dummyTransportMap[tag] = transport
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if server.Tag != "" {
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transportMap[server.Tag] = transport
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}
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}
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if len(transports) == len(dummyTransportMap) {
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break
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}
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if lastLen != len(dummyTransportMap) {
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continue
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}
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unresolvedTags := common.MapIndexed(common.FilterIndexed(dnsOptions.Servers, func(index int, server option.DNSServerOptions) bool {
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_, exists := dummyTransportMap[transportTags[index]]
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return !exists
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}), func(index int, server option.DNSServerOptions) string {
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return transportTags[index]
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})
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return nil, E.New("found circular reference in dns servers: ", strings.Join(unresolvedTags, " "))
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}
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var defaultTransport adapter.DNSTransport
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if options.Final != "" {
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defaultTransport = dummyTransportMap[options.Final]
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if defaultTransport == nil {
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return nil, E.New("default dns server not found: ", options.Final)
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}
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}
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if defaultTransport == nil {
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if len(transports) == 0 {
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transports = append(transports, dns.NewLocalTransport())
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}
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defaultTransport = transports[0]
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}
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router.defaultTransport = defaultTransport
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router.transports = transports
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router.transportMap = transportMap
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if options.AutoDetectInterface {
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monitor, err := iffmonitor.New(router.logger)
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if err != nil {
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return nil, E.Cause(err, "create default interface monitor")
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}
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router.interfaceMonitor = monitor
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}
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return router, nil
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}
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func (r *Router) Initialize(outbounds []adapter.Outbound, defaultOutbound func() adapter.Outbound) error {
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outboundByTag := make(map[string]adapter.Outbound)
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for _, detour := range outbounds {
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outboundByTag[detour.Tag()] = detour
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}
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var defaultOutboundForConnection adapter.Outbound
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var defaultOutboundForPacketConnection adapter.Outbound
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if r.defaultDetour != "" {
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detour, loaded := outboundByTag[r.defaultDetour]
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if !loaded {
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return E.New("default detour not found: ", r.defaultDetour)
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}
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if common.Contains(detour.Network(), C.NetworkTCP) {
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defaultOutboundForConnection = detour
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}
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if common.Contains(detour.Network(), C.NetworkUDP) {
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defaultOutboundForPacketConnection = detour
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}
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}
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var index, packetIndex int
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if defaultOutboundForConnection == nil {
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for i, detour := range outbounds {
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if common.Contains(detour.Network(), C.NetworkTCP) {
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index = i
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defaultOutboundForConnection = detour
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break
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}
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}
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}
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if defaultOutboundForPacketConnection == nil {
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for i, detour := range outbounds {
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if common.Contains(detour.Network(), C.NetworkUDP) {
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packetIndex = i
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defaultOutboundForPacketConnection = detour
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break
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}
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}
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}
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if defaultOutboundForConnection == nil || defaultOutboundForPacketConnection == nil {
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detour := defaultOutbound()
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if defaultOutboundForConnection == nil {
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defaultOutboundForConnection = detour
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}
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if defaultOutboundForPacketConnection == nil {
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defaultOutboundForPacketConnection = detour
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}
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}
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if defaultOutboundForConnection != defaultOutboundForPacketConnection {
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var description string
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if defaultOutboundForConnection.Tag() != "" {
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description = defaultOutboundForConnection.Tag()
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} else {
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description = F.ToString(index)
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}
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var packetDescription string
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if defaultOutboundForPacketConnection.Tag() != "" {
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packetDescription = defaultOutboundForPacketConnection.Tag()
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} else {
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packetDescription = F.ToString(packetIndex)
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}
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r.logger.Info("using ", defaultOutboundForConnection.Type(), "[", description, "] as default outbound for connection")
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r.logger.Info("using ", defaultOutboundForPacketConnection.Type(), "[", packetDescription, "] as default outbound for packet connection")
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}
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r.defaultOutboundForConnection = defaultOutboundForConnection
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r.defaultOutboundForPacketConnection = defaultOutboundForPacketConnection
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r.outboundByTag = outboundByTag
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for i, rule := range r.rules {
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if _, loaded := outboundByTag[rule.Outbound()]; !loaded {
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return E.New("outbound not found for rule[", i, "]: ", rule.Outbound())
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}
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}
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return nil
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}
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func (r *Router) Start() error {
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if r.needGeoIPDatabase {
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err := r.prepareGeoIPDatabase()
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if err != nil {
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return err
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}
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}
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if r.needGeositeDatabase {
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err := r.prepareGeositeDatabase()
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if err != nil {
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return err
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}
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}
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for _, rule := range r.rules {
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err := rule.Start()
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if err != nil {
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return err
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}
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}
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for _, rule := range r.dnsRules {
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err := rule.Start()
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if err != nil {
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return err
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}
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}
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if r.needGeositeDatabase {
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for _, rule := range r.rules {
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err := rule.UpdateGeosite()
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if err != nil {
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r.logger.Error("failed to initialize geosite: ", err)
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}
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}
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for _, rule := range r.dnsRules {
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err := rule.UpdateGeosite()
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if err != nil {
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r.logger.Error("failed to initialize geosite: ", err)
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}
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}
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err := common.Close(r.geositeReader)
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if err != nil {
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return err
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}
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r.geositeCache = nil
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r.geositeReader = nil
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}
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if r.interfaceMonitor != nil {
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err := r.interfaceMonitor.Start()
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if err != nil {
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return err
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}
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}
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return nil
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}
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func (r *Router) Close() error {
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for _, rule := range r.rules {
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err := rule.Close()
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if err != nil {
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return err
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}
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}
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for _, rule := range r.dnsRules {
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err := rule.Close()
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if err != nil {
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return err
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}
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}
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return common.Close(
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common.PtrOrNil(r.geoIPReader),
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r.interfaceMonitor,
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)
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}
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func (r *Router) GeoIPReader() *geoip.Reader {
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return r.geoIPReader
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}
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func (r *Router) LoadGeosite(code string) (adapter.Rule, error) {
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rule, cached := r.geositeCache[code]
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if cached {
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return rule, nil
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}
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items, err := r.geositeReader.Read(code)
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if err != nil {
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return nil, err
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}
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rule, err = NewDefaultRule(r, nil, geosite.Compile(items))
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if err != nil {
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return nil, err
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}
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r.geositeCache[code] = rule
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return rule, nil
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}
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func (r *Router) Outbound(tag string) (adapter.Outbound, bool) {
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outbound, loaded := r.outboundByTag[tag]
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return outbound, loaded
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}
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func (r *Router) DefaultOutbound(network string) adapter.Outbound {
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if network == C.NetworkTCP {
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return r.defaultOutboundForConnection
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} else {
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return r.defaultOutboundForPacketConnection
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}
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}
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func (r *Router) RouteConnection(ctx context.Context, conn net.Conn, metadata adapter.InboundContext) error {
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if metadata.SniffEnabled {
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_buffer := buf.StackNew()
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defer common.KeepAlive(_buffer)
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buffer := common.Dup(_buffer)
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defer buffer.Release()
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reader := io.TeeReader(conn, buffer)
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sniffMetadata, err := sniff.PeekStream(ctx, reader, sniff.TLSClientHello, sniff.HTTPHost)
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if err == nil {
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metadata.Protocol = sniffMetadata.Protocol
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metadata.Domain = sniffMetadata.Domain
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if metadata.SniffOverrideDestination && sniff.IsDomainName(metadata.Domain) {
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metadata.Destination.Fqdn = metadata.Domain
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}
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if metadata.Domain != "" {
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r.logger.WithContext(ctx).Info("sniffed protocol: ", metadata.Protocol, ", domain: ", metadata.Domain)
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} else {
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r.logger.WithContext(ctx).Info("sniffed protocol: ", metadata.Protocol)
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}
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}
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if !buffer.IsEmpty() {
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conn = bufio.NewCachedConn(conn, buffer)
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}
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}
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if metadata.Destination.IsFqdn() && metadata.DomainStrategy != C.DomainStrategyAsIS {
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addresses, err := r.Lookup(adapter.WithContext(ctx, &metadata), metadata.Destination.Fqdn, metadata.DomainStrategy)
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if err != nil {
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return err
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}
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metadata.DestinationAddresses = addresses
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r.dnsLogger.WithContext(ctx).Info("resolved [", strings.Join(F.MapToString(metadata.DestinationAddresses), " "), "]")
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}
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detour := r.match(ctx, metadata, r.defaultOutboundForConnection)
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if !common.Contains(detour.Network(), C.NetworkTCP) {
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conn.Close()
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return E.New("missing supported outbound, closing connection")
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}
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return detour.NewConnection(ctx, conn, metadata)
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}
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func (r *Router) RoutePacketConnection(ctx context.Context, conn N.PacketConn, metadata adapter.InboundContext) error {
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if metadata.SniffEnabled {
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_buffer := buf.StackNewPacket()
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defer common.KeepAlive(_buffer)
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buffer := common.Dup(_buffer)
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defer buffer.Release()
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_, err := conn.ReadPacket(buffer)
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if err != nil {
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return err
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}
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sniffMetadata, err := sniff.PeekPacket(ctx, buffer.Bytes(), sniff.QUICClientHello)
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originDestination := metadata.Destination
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if err == nil {
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metadata.Protocol = sniffMetadata.Protocol
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metadata.Domain = sniffMetadata.Domain
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if metadata.SniffOverrideDestination && sniff.IsDomainName(metadata.Domain) {
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metadata.Destination.Fqdn = metadata.Domain
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}
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if metadata.Domain != "" {
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r.logger.WithContext(ctx).Info("sniffed packet protocol: ", metadata.Protocol, ", domain: ", metadata.Domain)
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} else {
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r.logger.WithContext(ctx).Info("sniffed packet protocol: ", metadata.Protocol)
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}
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}
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conn = bufio.NewCachedPacketConn(conn, buffer, originDestination)
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}
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if metadata.Destination.IsFqdn() && metadata.DomainStrategy != C.DomainStrategyAsIS {
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addresses, err := r.Lookup(adapter.WithContext(ctx, &metadata), metadata.Destination.Fqdn, metadata.DomainStrategy)
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if err != nil {
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return err
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}
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metadata.DestinationAddresses = addresses
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r.dnsLogger.WithContext(ctx).Info("resolved [", strings.Join(F.MapToString(metadata.DestinationAddresses), " "), "]")
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}
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detour := r.match(ctx, metadata, r.defaultOutboundForPacketConnection)
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if !common.Contains(detour.Network(), C.NetworkUDP) {
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conn.Close()
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return E.New("missing supported outbound, closing packet connection")
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}
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return detour.NewPacketConnection(ctx, conn, metadata)
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}
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func (r *Router) Exchange(ctx context.Context, message *dnsmessage.Message) (*dnsmessage.Message, error) {
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return r.dnsClient.Exchange(ctx, r.matchDNS(ctx), message)
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}
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func (r *Router) Lookup(ctx context.Context, domain string, strategy C.DomainStrategy) ([]netip.Addr, error) {
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return r.dnsClient.Lookup(ctx, r.matchDNS(ctx), domain, strategy)
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}
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func (r *Router) LookupDefault(ctx context.Context, domain string) ([]netip.Addr, error) {
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return r.dnsClient.Lookup(ctx, r.matchDNS(ctx), domain, r.defaultDomainStrategy)
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}
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func (r *Router) match(ctx context.Context, metadata adapter.InboundContext, defaultOutbound adapter.Outbound) adapter.Outbound {
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for i, rule := range r.rules {
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if rule.Match(&metadata) {
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detour := rule.Outbound()
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r.logger.WithContext(ctx).Debug("match[", i, "] ", rule.String(), " => ", detour)
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if outbound, loaded := r.Outbound(detour); loaded {
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return outbound
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}
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r.logger.WithContext(ctx).Error("outbound not found: ", detour)
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}
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}
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return defaultOutbound
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}
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func (r *Router) matchDNS(ctx context.Context) adapter.DNSTransport {
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|
metadata := adapter.ContextFrom(ctx)
|
|
if metadata == nil {
|
|
r.dnsLogger.WithContext(ctx).Warn("no context: ", reflect.TypeOf(ctx))
|
|
return r.defaultTransport
|
|
}
|
|
for i, rule := range r.dnsRules {
|
|
if rule.Match(metadata) {
|
|
detour := rule.Outbound()
|
|
r.dnsLogger.WithContext(ctx).Debug("match[", i, "] ", rule.String(), " => ", detour)
|
|
if transport, loaded := r.transportMap[detour]; loaded {
|
|
return transport
|
|
}
|
|
r.dnsLogger.WithContext(ctx).Error("transport not found: ", detour)
|
|
}
|
|
}
|
|
return r.defaultTransport
|
|
}
|
|
|
|
func (r *Router) AutoDetectInterface() bool {
|
|
return r.autoDetectInterface
|
|
}
|
|
|
|
func (r *Router) DefaultInterfaceName() string {
|
|
if r.interfaceMonitor == nil {
|
|
return ""
|
|
}
|
|
return r.interfaceMonitor.DefaultInterfaceName()
|
|
}
|
|
|
|
func (r *Router) DefaultInterfaceIndex() int {
|
|
if r.interfaceMonitor == nil {
|
|
return 0
|
|
}
|
|
return r.interfaceMonitor.DefaultInterfaceIndex()
|
|
}
|
|
|
|
func hasGeoRule(rules []option.Rule, cond func(rule option.DefaultRule) bool) bool {
|
|
for _, rule := range rules {
|
|
switch rule.Type {
|
|
case C.RuleTypeDefault:
|
|
if cond(rule.DefaultOptions) {
|
|
return true
|
|
}
|
|
case C.RuleTypeLogical:
|
|
for _, subRule := range rule.LogicalOptions.Rules {
|
|
if cond(subRule) {
|
|
return true
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return false
|
|
}
|
|
|
|
func hasGeoDNSRule(rules []option.DNSRule, cond func(rule option.DefaultDNSRule) bool) bool {
|
|
for _, rule := range rules {
|
|
switch rule.Type {
|
|
case C.RuleTypeDefault:
|
|
if cond(rule.DefaultOptions) {
|
|
return true
|
|
}
|
|
case C.RuleTypeLogical:
|
|
for _, subRule := range rule.LogicalOptions.Rules {
|
|
if cond(subRule) {
|
|
return true
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return false
|
|
}
|
|
|
|
func isGeoIPRule(rule option.DefaultRule) bool {
|
|
return len(rule.SourceGeoIP) > 0 && common.Any(rule.SourceGeoIP, notPrivateNode) || len(rule.GeoIP) > 0 && common.Any(rule.GeoIP, notPrivateNode)
|
|
}
|
|
|
|
func isGeoIPDNSRule(rule option.DefaultDNSRule) bool {
|
|
return len(rule.SourceGeoIP) > 0 && common.Any(rule.SourceGeoIP, notPrivateNode)
|
|
}
|
|
|
|
func isGeositeRule(rule option.DefaultRule) bool {
|
|
return len(rule.Geosite) > 0
|
|
}
|
|
|
|
func isGeositeDNSRule(rule option.DefaultDNSRule) bool {
|
|
return len(rule.Geosite) > 0
|
|
}
|
|
|
|
func notPrivateNode(code string) bool {
|
|
return code != "private"
|
|
}
|
|
|
|
func (r *Router) prepareGeoIPDatabase() error {
|
|
var geoPath string
|
|
if r.geoIPOptions.Path != "" {
|
|
geoPath = r.geoIPOptions.Path
|
|
} else {
|
|
geoPath = "geoip.db"
|
|
if foundPath, loaded := C.FindPath(geoPath); loaded {
|
|
geoPath = foundPath
|
|
}
|
|
}
|
|
if !rw.FileExists(geoPath) {
|
|
r.logger.Warn("geoip database not exists: ", geoPath)
|
|
var err error
|
|
for attempts := 0; attempts < 3; attempts++ {
|
|
err = r.downloadGeoIPDatabase(geoPath)
|
|
if err == nil {
|
|
break
|
|
}
|
|
r.logger.Error("download geoip database: ", err)
|
|
os.Remove(geoPath)
|
|
time.Sleep(10 * time.Second)
|
|
}
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
geoReader, codes, err := geoip.Open(geoPath)
|
|
if err != nil {
|
|
return E.Cause(err, "open geoip database")
|
|
}
|
|
r.logger.Info("loaded geoip database: ", len(codes), " codes")
|
|
r.geoIPReader = geoReader
|
|
return nil
|
|
}
|
|
|
|
func (r *Router) prepareGeositeDatabase() error {
|
|
var geoPath string
|
|
if r.geositeOptions.Path != "" {
|
|
geoPath = r.geoIPOptions.Path
|
|
} else {
|
|
geoPath = "geosite.db"
|
|
if foundPath, loaded := C.FindPath(geoPath); loaded {
|
|
geoPath = foundPath
|
|
}
|
|
}
|
|
if !rw.FileExists(geoPath) {
|
|
r.logger.Warn("geosite database not exists: ", geoPath)
|
|
var err error
|
|
for attempts := 0; attempts < 3; attempts++ {
|
|
err = r.downloadGeositeDatabase(geoPath)
|
|
if err == nil {
|
|
break
|
|
}
|
|
r.logger.Error("download geosite database: ", err)
|
|
os.Remove(geoPath)
|
|
time.Sleep(10 * time.Second)
|
|
}
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
geoReader, codes, err := geosite.Open(geoPath)
|
|
if err == nil {
|
|
r.logger.Info("loaded geosite database: ", len(codes), " codes")
|
|
r.geositeReader = geoReader
|
|
} else {
|
|
return E.Cause(err, "open geosite database")
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (r *Router) downloadGeoIPDatabase(savePath string) error {
|
|
var downloadURL string
|
|
if r.geoIPOptions.DownloadURL != "" {
|
|
downloadURL = r.geoIPOptions.DownloadURL
|
|
} else {
|
|
downloadURL = "https://github.com/SagerNet/sing-geoip/releases/latest/download/geoip.db"
|
|
}
|
|
r.logger.Info("downloading geoip database")
|
|
var detour adapter.Outbound
|
|
if r.geoIPOptions.DownloadDetour != "" {
|
|
outbound, loaded := r.Outbound(r.geoIPOptions.DownloadDetour)
|
|
if !loaded {
|
|
return E.New("detour outbound not found: ", r.geoIPOptions.DownloadDetour)
|
|
}
|
|
detour = outbound
|
|
} else {
|
|
detour = r.defaultOutboundForConnection
|
|
}
|
|
|
|
if parentDir := filepath.Dir(savePath); parentDir != "" {
|
|
os.MkdirAll(parentDir, 0o755)
|
|
}
|
|
|
|
saveFile, err := os.OpenFile(savePath, os.O_CREATE|os.O_WRONLY, 0o644)
|
|
if err != nil {
|
|
return E.Cause(err, "open output file: ", downloadURL)
|
|
}
|
|
defer saveFile.Close()
|
|
|
|
httpClient := &http.Client{
|
|
Transport: &http.Transport{
|
|
ForceAttemptHTTP2: true,
|
|
TLSHandshakeTimeout: 5 * time.Second,
|
|
DialContext: func(ctx context.Context, network, addr string) (net.Conn, error) {
|
|
return detour.DialContext(ctx, network, M.ParseSocksaddr(addr))
|
|
},
|
|
},
|
|
}
|
|
response, err := httpClient.Get(downloadURL)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer response.Body.Close()
|
|
_, err = io.Copy(saveFile, response.Body)
|
|
return err
|
|
}
|
|
|
|
func (r *Router) downloadGeositeDatabase(savePath string) error {
|
|
var downloadURL string
|
|
if r.geositeOptions.DownloadURL != "" {
|
|
downloadURL = r.geositeOptions.DownloadURL
|
|
} else {
|
|
downloadURL = "https://github.com/SagerNet/sing-geosite/releases/latest/download/geosite.db"
|
|
}
|
|
r.logger.Info("downloading geoip database")
|
|
var detour adapter.Outbound
|
|
if r.geositeOptions.DownloadDetour != "" {
|
|
outbound, loaded := r.Outbound(r.geositeOptions.DownloadDetour)
|
|
if !loaded {
|
|
return E.New("detour outbound not found: ", r.geoIPOptions.DownloadDetour)
|
|
}
|
|
detour = outbound
|
|
} else {
|
|
detour = r.defaultOutboundForConnection
|
|
}
|
|
|
|
if parentDir := filepath.Dir(savePath); parentDir != "" {
|
|
os.MkdirAll(parentDir, 0o755)
|
|
}
|
|
|
|
saveFile, err := os.OpenFile(savePath, os.O_CREATE|os.O_WRONLY, 0o644)
|
|
if err != nil {
|
|
return E.Cause(err, "open output file: ", downloadURL)
|
|
}
|
|
defer saveFile.Close()
|
|
|
|
httpClient := &http.Client{
|
|
Transport: &http.Transport{
|
|
ForceAttemptHTTP2: true,
|
|
TLSHandshakeTimeout: 5 * time.Second,
|
|
DialContext: func(ctx context.Context, network, addr string) (net.Conn, error) {
|
|
return detour.DialContext(ctx, network, M.ParseSocksaddr(addr))
|
|
},
|
|
},
|
|
}
|
|
response, err := httpClient.Get(downloadURL)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer response.Body.Close()
|
|
_, err = io.Copy(saveFile, response.Body)
|
|
return err
|
|
}
|