98 lines
2.3 KiB
Go
98 lines
2.3 KiB
Go
package provider
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import (
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"fmt"
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C "github.com/Dreamacro/clash/constant"
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"github.com/Dreamacro/clash/log"
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"strings"
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)
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type classicalStrategy struct {
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rules []C.Rule
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count int
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shouldResolveIP bool
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shouldFindProcess bool
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parse func(tp, payload, target string, params []string) (parsed C.Rule, parseErr error)
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}
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func (c *classicalStrategy) Match(metadata *C.Metadata) bool {
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for _, rule := range c.rules {
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if m, _ := rule.Match(metadata); m {
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return true
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}
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}
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return false
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}
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func (c *classicalStrategy) Count() int {
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return c.count
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}
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func (c *classicalStrategy) ShouldResolveIP() bool {
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return c.shouldResolveIP
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}
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func (c *classicalStrategy) ShouldFindProcess() bool {
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return c.shouldFindProcess
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}
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func (c *classicalStrategy) Reset() {
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c.rules = nil
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c.count = 0
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c.shouldFindProcess = false
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c.shouldResolveIP = false
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}
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func (c *classicalStrategy) Insert(rule string) {
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ruleType, rule, params := ruleParse(rule)
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if ruleType == "PROCESS-NAME" {
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c.shouldFindProcess = true
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}
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r, err := c.parse(ruleType, rule, "", params)
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if err != nil {
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log.Warnln("parse rule error:[%s]", err.Error())
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} else {
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if r.ShouldResolveIP() {
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c.shouldResolveIP = true
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}
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if r.ShouldFindProcess() {
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c.shouldFindProcess = true
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}
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c.rules = append(c.rules, r)
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c.count++
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}
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}
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func (c *classicalStrategy) FinishInsert() {}
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func ruleParse(ruleRaw string) (string, string, []string) {
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item := strings.Split(ruleRaw, ",")
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if len(item) == 1 {
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return "", item[0], nil
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} else if len(item) == 2 {
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return item[0], item[1], nil
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} else if len(item) > 2 {
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if item[0] == "NOT" || item[0] == "OR" || item[0] == "AND" || item[0] == "SUB-RULE" {
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return item[0], strings.Join(item[1:len(item)], ","), nil
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} else {
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return item[0], item[1], item[2:]
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}
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}
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return "", "", nil
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}
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func NewClassicalStrategy(parse func(tp, payload, target string, params []string, subRules map[string][]C.Rule) (parsed C.Rule, parseErr error)) *classicalStrategy {
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return &classicalStrategy{rules: []C.Rule{}, parse: func(tp, payload, target string, params []string) (parsed C.Rule, parseErr error) {
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switch tp {
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case "MATCH":
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return nil, fmt.Errorf("unsupported rule type on rule-set")
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default:
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return parse(tp, payload, target, params, nil)
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}
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}}
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}
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