Add L3 routing support

2026-06-27 20:52:40 +03:00 · 2023-03-21 21:36:17 +08:00
parent 9b762e3c2e
commit afcc8b204f
61 changed files with 2043 additions and 965 deletions
--- a/route/rule_ip.go
+++ b/route/rule_ip.go
@@ -0,0 +1,189 @@
+package route
+
+import (
+	"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"
+	"github.com/sagernet/sing-tun"
+	"github.com/sagernet/sing/common"
+	E "github.com/sagernet/sing/common/exceptions"
+)
+
+func NewIPRule(router adapter.Router, logger log.ContextLogger, options option.IPRule) (adapter.IPRule, error) {
+	switch options.Type {
+	case "", C.RuleTypeDefault:
+		if !options.DefaultOptions.IsValid() {
+			return nil, E.New("missing conditions")
+		}
+		if common.IsEmpty(options.DefaultOptions.Action) {
+			return nil, E.New("missing action")
+		}
+		return NewDefaultIPRule(router, logger, options.DefaultOptions)
+	case C.RuleTypeLogical:
+		if !options.LogicalOptions.IsValid() {
+			return nil, E.New("missing conditions")
+		}
+		if common.IsEmpty(options.DefaultOptions.Action) {
+			return nil, E.New("missing action")
+		}
+		return NewLogicalIPRule(router, logger, options.LogicalOptions)
+	default:
+		return nil, E.New("unknown rule type: ", options.Type)
+	}
+}
+
+var _ adapter.IPRule = (*DefaultIPRule)(nil)
+
+type DefaultIPRule struct {
+	abstractDefaultRule
+	action tun.ActionType
+}
+
+func NewDefaultIPRule(router adapter.Router, logger log.ContextLogger, options option.DefaultIPRule) (*DefaultIPRule, error) {
+	rule := &DefaultIPRule{
+		abstractDefaultRule: abstractDefaultRule{
+			invert:   options.Invert,
+			outbound: options.Outbound,
+		},
+		action: tun.ActionType(options.Action),
+	}
+	if len(options.Inbound) > 0 {
+		item := NewInboundRule(options.Inbound)
+		rule.items = append(rule.items, item)
+		rule.allItems = append(rule.allItems, item)
+	}
+	if options.IPVersion > 0 {
+		switch options.IPVersion {
+		case 4, 6:
+			item := NewIPVersionItem(options.IPVersion == 6)
+			rule.items = append(rule.items, item)
+			rule.allItems = append(rule.allItems, item)
+		default:
+			return nil, E.New("invalid ip version: ", options.IPVersion)
+		}
+	}
+	if len(options.Network) > 0 {
+		item := NewNetworkItem(options.Network)
+		rule.items = append(rule.items, item)
+		rule.allItems = append(rule.allItems, item)
+	}
+	if len(options.Domain) > 0 || len(options.DomainSuffix) > 0 {
+		item := NewDomainItem(options.Domain, options.DomainSuffix)
+		rule.destinationAddressItems = append(rule.destinationAddressItems, item)
+		rule.allItems = append(rule.allItems, item)
+	}
+	if len(options.DomainKeyword) > 0 {
+		item := NewDomainKeywordItem(options.DomainKeyword)
+		rule.destinationAddressItems = append(rule.destinationAddressItems, item)
+		rule.allItems = append(rule.allItems, item)
+	}
+	if len(options.DomainRegex) > 0 {
+		item, err := NewDomainRegexItem(options.DomainRegex)
+		if err != nil {
+			return nil, E.Cause(err, "domain_regex")
+		}
+		rule.destinationAddressItems = append(rule.destinationAddressItems, item)
+		rule.allItems = append(rule.allItems, item)
+	}
+	if len(options.Geosite) > 0 {
+		item := NewGeositeItem(router, logger, options.Geosite)
+		rule.destinationAddressItems = append(rule.destinationAddressItems, item)
+		rule.allItems = append(rule.allItems, item)
+	}
+	if len(options.SourceGeoIP) > 0 {
+		item := NewGeoIPItem(router, logger, true, options.SourceGeoIP)
+		rule.sourceAddressItems = append(rule.sourceAddressItems, item)
+		rule.allItems = append(rule.allItems, item)
+	}
+	if len(options.GeoIP) > 0 {
+		item := NewGeoIPItem(router, logger, false, options.GeoIP)
+		rule.destinationAddressItems = append(rule.destinationAddressItems, item)
+		rule.allItems = append(rule.allItems, item)
+	}
+	if len(options.SourceIPCIDR) > 0 {
+		item, err := NewIPCIDRItem(true, options.SourceIPCIDR)
+		if err != nil {
+			return nil, E.Cause(err, "source_ipcidr")
+		}
+		rule.sourceAddressItems = append(rule.sourceAddressItems, item)
+		rule.allItems = append(rule.allItems, item)
+	}
+	if len(options.IPCIDR) > 0 {
+		item, err := NewIPCIDRItem(false, options.IPCIDR)
+		if err != nil {
+			return nil, E.Cause(err, "ipcidr")
+		}
+		rule.destinationAddressItems = append(rule.destinationAddressItems, item)
+		rule.allItems = append(rule.allItems, item)
+	}
+	if len(options.SourcePort) > 0 {
+		item := NewPortItem(true, options.SourcePort)
+		rule.sourcePortItems = append(rule.sourcePortItems, item)
+		rule.allItems = append(rule.allItems, item)
+	}
+	if len(options.SourcePortRange) > 0 {
+		item, err := NewPortRangeItem(true, options.SourcePortRange)
+		if err != nil {
+			return nil, E.Cause(err, "source_port_range")
+		}
+		rule.sourcePortItems = append(rule.sourcePortItems, item)
+		rule.allItems = append(rule.allItems, item)
+	}
+	if len(options.Port) > 0 {
+		item := NewPortItem(false, options.Port)
+		rule.destinationPortItems = append(rule.destinationPortItems, item)
+		rule.allItems = append(rule.allItems, item)
+	}
+	if len(options.PortRange) > 0 {
+		item, err := NewPortRangeItem(false, options.PortRange)
+		if err != nil {
+			return nil, E.Cause(err, "port_range")
+		}
+		rule.destinationPortItems = append(rule.destinationPortItems, item)
+		rule.allItems = append(rule.allItems, item)
+	}
+	return rule, nil
+}
+
+func (r *DefaultIPRule) Action() tun.ActionType {
+	return r.action
+}
+
+var _ adapter.IPRule = (*LogicalIPRule)(nil)
+
+type LogicalIPRule struct {
+	abstractLogicalRule
+	action tun.ActionType
+}
+
+func NewLogicalIPRule(router adapter.Router, logger log.ContextLogger, options option.LogicalIPRule) (*LogicalIPRule, error) {
+	r := &LogicalIPRule{
+		abstractLogicalRule: abstractLogicalRule{
+			rules:    make([]adapter.Rule, len(options.Rules)),
+			invert:   options.Invert,
+			outbound: options.Outbound,
+		},
+		action: tun.ActionType(options.Action),
+	}
+	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 := NewDefaultIPRule(router, logger, subRule)
+		if err != nil {
+			return nil, E.Cause(err, "sub rule[", i, "]")
+		}
+		r.rules[i] = rule
+	}
+	return r, nil
+}
+
+func (r *LogicalIPRule) Action() tun.ActionType {
+	return r.action
+}