mirror of
https://github.com/SagerNet/sing-box.git
synced 2024-12-12 16:18:50 +00:00
99 lines
2.2 KiB
Go
99 lines
2.2 KiB
Go
package rule
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import (
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"net/netip"
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"strings"
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"github.com/sagernet/sing-box/adapter"
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"github.com/sagernet/sing-box/log"
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N "github.com/sagernet/sing/common/network"
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)
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var _ RuleItem = (*GeoIPItem)(nil)
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type GeoIPItem struct {
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router adapter.Router
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logger log.ContextLogger
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isSource bool
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codes []string
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codeMap map[string]bool
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}
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func NewGeoIPItem(router adapter.Router, logger log.ContextLogger, isSource bool, codes []string) *GeoIPItem {
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codeMap := make(map[string]bool)
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for _, code := range codes {
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codeMap[code] = true
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}
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return &GeoIPItem{
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router: router,
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logger: logger,
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codes: codes,
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isSource: isSource,
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codeMap: codeMap,
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}
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}
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func (r *GeoIPItem) Match(metadata *adapter.InboundContext) bool {
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var geoipCode string
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if r.isSource && metadata.SourceGeoIPCode != "" {
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geoipCode = metadata.SourceGeoIPCode
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} else if !r.isSource && metadata.GeoIPCode != "" {
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geoipCode = metadata.GeoIPCode
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}
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if geoipCode != "" {
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return r.codeMap[geoipCode]
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}
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var destination netip.Addr
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if r.isSource {
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destination = metadata.Source.Addr
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} else {
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destination = metadata.Destination.Addr
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}
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if destination.IsValid() {
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return r.match(metadata, destination)
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}
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for _, destinationAddress := range metadata.DestinationAddresses {
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if r.match(metadata, destinationAddress) {
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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 (r *GeoIPItem) match(metadata *adapter.InboundContext, destination netip.Addr) bool {
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var geoipCode string
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geoReader := r.router.GeoIPReader()
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if !N.IsPublicAddr(destination) {
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geoipCode = "private"
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} else if geoReader != nil {
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geoipCode = geoReader.Lookup(destination)
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}
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if geoipCode == "" {
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return false
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}
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if r.isSource {
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metadata.SourceGeoIPCode = geoipCode
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} else {
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metadata.GeoIPCode = geoipCode
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}
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return r.codeMap[geoipCode]
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}
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func (r *GeoIPItem) String() string {
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var description string
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if r.isSource {
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description = "source_geoip="
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} else {
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description = "geoip="
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}
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cLen := len(r.codes)
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if cLen == 1 {
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description += r.codes[0]
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} else if cLen > 3 {
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description += "[" + strings.Join(r.codes[:3], " ") + "...]"
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} else {
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description += "[" + strings.Join(r.codes, " ") + "]"
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}
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return description
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}
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