153 lines
3.2 KiB
Go
153 lines
3.2 KiB
Go
package provider
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import (
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"encoding/json"
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"github.com/Dreamacro/clash/component/resource"
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C "github.com/Dreamacro/clash/constant"
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P "github.com/Dreamacro/clash/constant/provider"
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"gopkg.in/yaml.v3"
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"runtime"
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"time"
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)
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var (
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ruleProviders = map[string]P.RuleProvider{}
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)
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type ruleSetProvider struct {
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*resource.Fetcher[any]
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behavior P.RuleType
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strategy ruleStrategy
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}
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type RuleSetProvider struct {
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*ruleSetProvider
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}
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type RulePayload struct {
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/**
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key: Domain or IP Cidr
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value: Rule type or is empty
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*/
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Rules []string `yaml:"payload"`
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Rules2 []string `yaml:"rules"`
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}
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type ruleStrategy interface {
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Match(metadata *C.Metadata) bool
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Count() int
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ShouldResolveIP() bool
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OnUpdate(rules []string)
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}
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func RuleProviders() map[string]P.RuleProvider {
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return ruleProviders
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}
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func SetRuleProvider(ruleProvider P.RuleProvider) {
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if ruleProvider != nil {
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ruleProviders[(ruleProvider).Name()] = ruleProvider
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}
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}
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func (rp *ruleSetProvider) Type() P.ProviderType {
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return P.Rule
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}
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func (rp *ruleSetProvider) Initial() error {
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elm, err := rp.Fetcher.Initial()
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if err != nil {
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return err
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}
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rp.OnUpdate(elm)
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return nil
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}
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func (rp *ruleSetProvider) Update() error {
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elm, same, err := rp.Fetcher.Update()
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if err == nil && !same {
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rp.OnUpdate(elm)
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return nil
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}
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return err
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}
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func (rp *ruleSetProvider) Behavior() P.RuleType {
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return rp.behavior
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}
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func (rp *ruleSetProvider) Match(metadata *C.Metadata) bool {
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return rp.strategy != nil && rp.strategy.Match(metadata)
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}
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func (rp *ruleSetProvider) ShouldResolveIP() bool {
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return rp.strategy.ShouldResolveIP()
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}
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func (rp *ruleSetProvider) AsRule(adaptor string) C.Rule {
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panic("implement me")
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}
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func (rp *ruleSetProvider) MarshalJSON() ([]byte, error) {
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return json.Marshal(
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map[string]interface{}{
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"behavior": rp.behavior.String(),
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"name": rp.Name(),
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"ruleCount": rp.strategy.Count(),
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"type": rp.Type().String(),
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"updatedAt": rp.UpdatedAt,
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"vehicleType": rp.VehicleType().String(),
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})
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}
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func NewRuleSetProvider(name string, behavior P.RuleType, interval time.Duration, vehicle P.Vehicle,
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parse func(tp, payload, target string, params []string) (parsed C.Rule, parseErr error)) P.RuleProvider {
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rp := &ruleSetProvider{
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behavior: behavior,
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}
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onUpdate := func(elm interface{}) {
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rulesRaw := elm.([]string)
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rp.strategy.OnUpdate(rulesRaw)
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}
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fetcher := resource.NewFetcher(name, interval, vehicle, rulesParse, onUpdate)
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rp.Fetcher = fetcher
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rp.strategy = newStrategy(behavior, parse)
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wrapper := &RuleSetProvider{
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rp,
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}
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final := func(provider *RuleSetProvider) { _ = rp.Fetcher.Destroy() }
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runtime.SetFinalizer(wrapper, final)
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return wrapper
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}
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func newStrategy(behavior P.RuleType, parse func(tp, payload, target string, params []string) (parsed C.Rule, parseErr error)) ruleStrategy {
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switch behavior {
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case P.Domain:
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strategy := NewDomainStrategy()
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return strategy
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case P.IPCIDR:
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strategy := NewIPCidrStrategy()
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return strategy
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case P.Classical:
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strategy := NewClassicalStrategy(parse)
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return strategy
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default:
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return nil
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}
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}
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func rulesParse(buf []byte) (any, error) {
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rulePayload := RulePayload{}
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err := yaml.Unmarshal(buf, &rulePayload)
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if err != nil {
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return nil, err
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}
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return append(rulePayload.Rules, rulePayload.Rules2...), nil
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}
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