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Reduce source address reveal

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Star Brilliant
2017-10-04 12:42:18 +08:00
parent e382ff415f
commit e0f127f1b1
2 changed files with 7 additions and 1 deletions
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json-dns/marshal.go
+3 -1
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@@ -19,6 +19,7 @@
package jsonDNS
import (
"net"
"strconv"
"strings"
"time"
@@ -77,7 +78,8 @@ func Marshal(msg *dns.Msg) *Response {
for _, option := range opt.Option {
if option.Option() == dns.EDNS0SUBNET {
edns0 := option.(*dns.EDNS0_SUBNET)
resp.EdnsClientSubnet = edns0.Address.String() + "/" + strconv.Itoa(int(edns0.SourceScope))
scopeMask := net.CIDRMask(int(edns0.SourceScope), len(edns0.Address))
resp.EdnsClientSubnet = edns0.Address.Mask(scopeMask).String() + "/" + strconv.Itoa(int(edns0.SourceScope))
}
}
continue