sing-box/route/rule_dns.go

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package route
import (
"strings"
"github.com/sagernet/sing-box/adapter"
C "github.com/sagernet/sing-box/constant"
"github.com/sagernet/sing-box/log"
"github.com/sagernet/sing-box/option"
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"github.com/sagernet/sing/common"
E "github.com/sagernet/sing/common/exceptions"
F "github.com/sagernet/sing/common/format"
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)
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func NewDNSRule(router adapter.Router, logger log.ContextLogger, options option.DNSRule) (adapter.DNSRule, error) {
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switch options.Type {
case "", C.RuleTypeDefault:
if !options.DefaultOptions.IsValid() {
return nil, E.New("missing conditions")
}
if options.DefaultOptions.Server == "" {
return nil, E.New("missing server field")
}
return NewDefaultDNSRule(router, logger, options.DefaultOptions)
case C.RuleTypeLogical:
if !options.LogicalOptions.IsValid() {
return nil, E.New("missing conditions")
}
if options.LogicalOptions.Server == "" {
return nil, E.New("missing server field")
}
return NewLogicalDNSRule(router, logger, options.LogicalOptions)
default:
return nil, E.New("unknown rule type: ", options.Type)
}
}
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var _ adapter.DNSRule = (*DefaultDNSRule)(nil)
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type DefaultDNSRule struct {
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items []RuleItem
addressItems []RuleItem
allItems []RuleItem
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invert bool
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outbound string
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disableCache bool
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}
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func NewDefaultDNSRule(router adapter.Router, logger log.ContextLogger, options option.DefaultDNSRule) (*DefaultDNSRule, error) {
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rule := &DefaultDNSRule{
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invert: options.Invert,
outbound: options.Server,
disableCache: options.DisableCache,
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}
if len(options.Inbound) > 0 {
item := NewInboundRule(options.Inbound)
rule.items = append(rule.items, item)
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rule.allItems = append(rule.allItems, item)
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}
if options.Network != "" {
switch options.Network {
case C.NetworkTCP, C.NetworkUDP:
item := NewNetworkItem(options.Network)
rule.items = append(rule.items, item)
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rule.allItems = append(rule.allItems, item)
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default:
return nil, E.New("invalid network: ", options.Network)
}
}
if len(options.AuthUser) > 0 {
item := NewAuthUserItem(options.AuthUser)
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rule.items = append(rule.items, item)
rule.allItems = append(rule.allItems, item)
}
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if len(options.Protocol) > 0 {
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item := NewProtocolItem(options.Protocol)
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rule.items = append(rule.items, item)
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rule.allItems = append(rule.allItems, item)
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}
if len(options.Domain) > 0 || len(options.DomainSuffix) > 0 {
item := NewDomainItem(options.Domain, options.DomainSuffix)
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rule.addressItems = append(rule.addressItems, item)
rule.allItems = append(rule.allItems, item)
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}
if len(options.DomainKeyword) > 0 {
item := NewDomainKeywordItem(options.DomainKeyword)
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rule.addressItems = append(rule.addressItems, item)
rule.allItems = append(rule.allItems, item)
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}
if len(options.DomainRegex) > 0 {
item, err := NewDomainRegexItem(options.DomainRegex)
if err != nil {
return nil, E.Cause(err, "domain_regex")
}
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rule.addressItems = append(rule.addressItems, item)
rule.allItems = append(rule.allItems, item)
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}
if len(options.Geosite) > 0 {
item := NewGeositeItem(router, logger, options.Geosite)
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rule.addressItems = append(rule.addressItems, item)
rule.allItems = append(rule.allItems, item)
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}
if len(options.SourceGeoIP) > 0 {
item := NewGeoIPItem(router, logger, true, options.SourceGeoIP)
rule.items = append(rule.items, item)
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rule.allItems = append(rule.allItems, item)
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}
if len(options.SourceIPCIDR) > 0 {
item, err := NewIPCIDRItem(true, options.SourceIPCIDR)
if err != nil {
return nil, E.Cause(err, "source_ipcidr")
}
rule.items = append(rule.items, item)
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rule.allItems = append(rule.allItems, item)
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}
if len(options.SourcePort) > 0 {
item := NewPortItem(true, options.SourcePort)
rule.items = append(rule.items, item)
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rule.allItems = append(rule.allItems, item)
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}
if len(options.SourcePortRange) > 0 {
item, err := NewPortRangeItem(true, options.SourcePortRange)
if err != nil {
return nil, E.Cause(err, "source_port_range")
}
rule.items = append(rule.items, item)
rule.allItems = append(rule.allItems, item)
}
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if len(options.Port) > 0 {
item := NewPortItem(false, options.Port)
rule.items = append(rule.items, item)
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rule.allItems = append(rule.allItems, item)
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}
if len(options.PortRange) > 0 {
item, err := NewPortRangeItem(false, options.PortRange)
if err != nil {
return nil, E.Cause(err, "port_range")
}
rule.items = append(rule.items, item)
rule.allItems = append(rule.allItems, item)
}
if len(options.ProcessName) > 0 {
item := NewProcessItem(options.ProcessName)
rule.items = append(rule.items, item)
rule.allItems = append(rule.allItems, item)
}
if len(options.PackageName) > 0 {
item := NewPackageNameItem(options.PackageName)
rule.items = append(rule.items, item)
rule.allItems = append(rule.allItems, item)
}
if len(options.User) > 0 {
item := NewUserItem(options.User)
rule.items = append(rule.items, item)
rule.allItems = append(rule.allItems, item)
}
if len(options.UserID) > 0 {
item := NewUserIDItem(options.UserID)
rule.items = append(rule.items, item)
rule.allItems = append(rule.allItems, item)
}
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if len(options.Outbound) > 0 {
item := NewOutboundRule(options.Outbound)
rule.items = append(rule.items, item)
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rule.allItems = append(rule.allItems, item)
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}
return rule, nil
}
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func (r *DefaultDNSRule) Type() string {
return C.RuleTypeDefault
}
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func (r *DefaultDNSRule) Start() error {
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for _, item := range r.allItems {
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err := common.Start(item)
if err != nil {
return err
}
}
return nil
}
func (r *DefaultDNSRule) Close() error {
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for _, item := range r.allItems {
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err := common.Close(item)
if err != nil {
return err
}
}
return nil
}
func (r *DefaultDNSRule) UpdateGeosite() error {
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for _, item := range r.allItems {
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if geositeItem, isSite := item.(*GeositeItem); isSite {
err := geositeItem.Update()
if err != nil {
return err
}
}
}
return nil
}
func (r *DefaultDNSRule) Match(metadata *adapter.InboundContext) bool {
for _, item := range r.items {
if !item.Match(metadata) {
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return r.invert
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}
}
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if len(r.addressItems) > 0 {
var addressMatch bool
for _, item := range r.addressItems {
if item.Match(metadata) {
addressMatch = true
break
}
}
if !addressMatch {
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return r.invert
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}
}
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return !r.invert
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}
func (r *DefaultDNSRule) Outbound() string {
return r.outbound
}
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func (r *DefaultDNSRule) DisableCache() bool {
return r.disableCache
}
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func (r *DefaultDNSRule) String() string {
return strings.Join(F.MapToString(r.allItems), " ")
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}
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var _ adapter.DNSRule = (*LogicalDNSRule)(nil)
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type LogicalDNSRule struct {
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mode string
rules []*DefaultDNSRule
invert bool
outbound string
disableCache bool
}
func NewLogicalDNSRule(router adapter.Router, logger log.ContextLogger, options option.LogicalDNSRule) (*LogicalDNSRule, error) {
r := &LogicalDNSRule{
rules: make([]*DefaultDNSRule, len(options.Rules)),
invert: options.Invert,
outbound: options.Server,
disableCache: options.DisableCache,
}
switch options.Mode {
case C.LogicalTypeAnd:
r.mode = C.LogicalTypeAnd
case C.LogicalTypeOr:
r.mode = C.LogicalTypeOr
default:
return nil, E.New("unknown logical mode: ", options.Mode)
}
for i, subRule := range options.Rules {
rule, err := NewDefaultDNSRule(router, logger, subRule)
if err != nil {
return nil, E.Cause(err, "sub rule[", i, "]")
}
r.rules[i] = rule
}
return r, nil
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}
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func (r *LogicalDNSRule) Type() string {
return C.RuleTypeLogical
}
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func (r *LogicalDNSRule) UpdateGeosite() error {
for _, rule := range r.rules {
err := rule.UpdateGeosite()
if err != nil {
return err
}
}
return nil
}
func (r *LogicalDNSRule) Start() error {
for _, rule := range r.rules {
err := rule.Start()
if err != nil {
return err
}
}
return nil
}
func (r *LogicalDNSRule) Close() error {
for _, rule := range r.rules {
err := rule.Close()
if err != nil {
return err
}
}
return nil
}
func (r *LogicalDNSRule) Match(metadata *adapter.InboundContext) bool {
if r.mode == C.LogicalTypeAnd {
return common.All(r.rules, func(it *DefaultDNSRule) bool {
return it.Match(metadata)
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}) != r.invert
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} else {
return common.Any(r.rules, func(it *DefaultDNSRule) bool {
return it.Match(metadata)
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}) != r.invert
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}
}
func (r *LogicalDNSRule) Outbound() string {
return r.outbound
}
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func (r *LogicalDNSRule) DisableCache() bool {
return r.disableCache
}
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func (r *LogicalDNSRule) String() string {
var op string
switch r.mode {
case C.LogicalTypeAnd:
op = "&&"
case C.LogicalTypeOr:
op = "||"
}
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if !r.invert {
return strings.Join(F.MapToString(r.rules), " "+op+" ")
} else {
return "!(" + strings.Join(F.MapToString(r.rules), " "+op+" ") + ")"
}
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}