mirror of
https://github.com/SagerNet/sing-box.git
synced 2024-11-24 17:41:29 +00:00
99 lines
2.2 KiB
Go
99 lines
2.2 KiB
Go
package rule
|
|
|
|
import (
|
|
"net/netip"
|
|
"strings"
|
|
|
|
"github.com/sagernet/sing-box/adapter"
|
|
"github.com/sagernet/sing-box/log"
|
|
N "github.com/sagernet/sing/common/network"
|
|
)
|
|
|
|
var _ RuleItem = (*GeoIPItem)(nil)
|
|
|
|
type GeoIPItem struct {
|
|
router adapter.Router
|
|
logger log.ContextLogger
|
|
isSource bool
|
|
codes []string
|
|
codeMap map[string]bool
|
|
}
|
|
|
|
func NewGeoIPItem(router adapter.Router, logger log.ContextLogger, isSource bool, codes []string) *GeoIPItem {
|
|
codeMap := make(map[string]bool)
|
|
for _, code := range codes {
|
|
codeMap[code] = true
|
|
}
|
|
return &GeoIPItem{
|
|
router: router,
|
|
logger: logger,
|
|
codes: codes,
|
|
isSource: isSource,
|
|
codeMap: codeMap,
|
|
}
|
|
}
|
|
|
|
func (r *GeoIPItem) Match(metadata *adapter.InboundContext) bool {
|
|
var geoipCode string
|
|
if r.isSource && metadata.SourceGeoIPCode != "" {
|
|
geoipCode = metadata.SourceGeoIPCode
|
|
} else if !r.isSource && metadata.GeoIPCode != "" {
|
|
geoipCode = metadata.GeoIPCode
|
|
}
|
|
if geoipCode != "" {
|
|
return r.codeMap[geoipCode]
|
|
}
|
|
var destination netip.Addr
|
|
if r.isSource {
|
|
destination = metadata.Source.Addr
|
|
} else {
|
|
destination = metadata.Destination.Addr
|
|
}
|
|
if destination.IsValid() {
|
|
return r.match(metadata, destination)
|
|
}
|
|
for _, destinationAddress := range metadata.DestinationAddresses {
|
|
if r.match(metadata, destinationAddress) {
|
|
return true
|
|
}
|
|
}
|
|
return false
|
|
}
|
|
|
|
func (r *GeoIPItem) match(metadata *adapter.InboundContext, destination netip.Addr) bool {
|
|
var geoipCode string
|
|
geoReader := r.router.GeoIPReader()
|
|
if !N.IsPublicAddr(destination) {
|
|
geoipCode = "private"
|
|
} else if geoReader != nil {
|
|
geoipCode = geoReader.Lookup(destination)
|
|
}
|
|
if geoipCode == "" {
|
|
return false
|
|
}
|
|
if r.isSource {
|
|
metadata.SourceGeoIPCode = geoipCode
|
|
} else {
|
|
metadata.GeoIPCode = geoipCode
|
|
}
|
|
return r.codeMap[geoipCode]
|
|
}
|
|
|
|
func (r *GeoIPItem) String() string {
|
|
var description string
|
|
if r.isSource {
|
|
description = "source_geoip="
|
|
} else {
|
|
description = "geoip="
|
|
}
|
|
cLen := len(r.codes)
|
|
if cLen == 1 {
|
|
description += r.codes[0]
|
|
} else if cLen > 3 {
|
|
description += "[" + strings.Join(r.codes[:3], " ") + "...]"
|
|
} else {
|
|
description += "[" + strings.Join(r.codes, " ") + "]"
|
|
}
|
|
return description
|
|
}
|