sing-box/route/rule_abstract.go

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2023-06-07 20:28:21 +08:00
package route
import (
"strings"
"github.com/sagernet/sing-box/adapter"
C "github.com/sagernet/sing-box/constant"
"github.com/sagernet/sing/common"
F "github.com/sagernet/sing/common/format"
)
type abstractDefaultRule struct {
items []RuleItem
sourceAddressItems []RuleItem
sourcePortItems []RuleItem
destinationAddressItems []RuleItem
destinationPortItems []RuleItem
allItems []RuleItem
invert bool
outbound string
}
func (r *abstractDefaultRule) Type() string {
return C.RuleTypeDefault
}
func (r *abstractDefaultRule) Start() error {
for _, item := range r.allItems {
err := common.Start(item)
if err != nil {
return err
}
}
return nil
}
func (r *abstractDefaultRule) Close() error {
for _, item := range r.allItems {
err := common.Close(item)
if err != nil {
return err
}
}
return nil
}
func (r *abstractDefaultRule) UpdateGeosite() error {
for _, item := range r.allItems {
if geositeItem, isSite := item.(*GeositeItem); isSite {
err := geositeItem.Update()
if err != nil {
return err
}
}
}
return nil
}
func (r *abstractDefaultRule) Match(metadata *adapter.InboundContext) bool {
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if len(r.allItems) == 0 {
return true
}
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for _, item := range r.items {
if !item.Match(metadata) {
return r.invert
}
}
if len(r.sourceAddressItems) > 0 {
var sourceAddressMatch bool
for _, item := range r.sourceAddressItems {
if item.Match(metadata) {
sourceAddressMatch = true
break
}
}
if !sourceAddressMatch {
return r.invert
}
}
if len(r.sourcePortItems) > 0 {
var sourcePortMatch bool
for _, item := range r.sourcePortItems {
if item.Match(metadata) {
sourcePortMatch = true
break
}
}
if !sourcePortMatch {
return r.invert
}
}
if len(r.destinationAddressItems) > 0 {
var destinationAddressMatch bool
for _, item := range r.destinationAddressItems {
if item.Match(metadata) {
destinationAddressMatch = true
break
}
}
if !destinationAddressMatch {
return r.invert
}
}
if len(r.destinationPortItems) > 0 {
var destinationPortMatch bool
for _, item := range r.destinationPortItems {
if item.Match(metadata) {
destinationPortMatch = true
break
}
}
if !destinationPortMatch {
return r.invert
}
}
return !r.invert
}
func (r *abstractDefaultRule) Outbound() string {
return r.outbound
}
func (r *abstractDefaultRule) String() string {
if !r.invert {
return strings.Join(F.MapToString(r.allItems), " ")
} else {
return "!(" + strings.Join(F.MapToString(r.allItems), " ") + ")"
}
}
type abstractLogicalRule struct {
rules []adapter.Rule
mode string
invert bool
outbound string
}
func (r *abstractLogicalRule) Type() string {
return C.RuleTypeLogical
}
func (r *abstractLogicalRule) UpdateGeosite() error {
for _, rule := range r.rules {
err := rule.UpdateGeosite()
if err != nil {
return err
}
}
return nil
}
func (r *abstractLogicalRule) Start() error {
for _, rule := range r.rules {
err := rule.Start()
if err != nil {
return err
}
}
return nil
}
func (r *abstractLogicalRule) Close() error {
for _, rule := range r.rules {
err := rule.Close()
if err != nil {
return err
}
}
return nil
}
func (r *abstractLogicalRule) Match(metadata *adapter.InboundContext) bool {
if r.mode == C.LogicalTypeAnd {
return common.All(r.rules, func(it adapter.Rule) bool {
return it.Match(metadata)
}) != r.invert
} else {
return common.Any(r.rules, func(it adapter.Rule) bool {
return it.Match(metadata)
}) != r.invert
}
}
func (r *abstractLogicalRule) Outbound() string {
return r.outbound
}
func (r *abstractLogicalRule) String() string {
var op string
switch r.mode {
case C.LogicalTypeAnd:
op = "&&"
case C.LogicalTypeOr:
op = "||"
}
if !r.invert {
return strings.Join(F.MapToString(r.rules), " "+op+" ")
} else {
return "!(" + strings.Join(F.MapToString(r.rules), " "+op+" ") + ")"
}
}