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Log: Add MaskAddress option to hide IP addresses (#3783)

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* Log: Add maskAddress option

* Correct IPv6 subnet
This commit is contained in:
风扇滑翔翼 2024-09-11 22:45:47 +08:00 committed by GitHub
parent 6b1bf312d7
commit a247997e38
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GPG key ID: B5690EEEBB952194
4 changed files with 91 additions and 17 deletions
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31
app/log/config.pb.go
View file

@ -84,6 +84,7 @@ type Config struct {
AccessLogType LogType `protobuf:"varint,4,opt,name=access_log_type,json=accessLogType,proto3,enum=xray.app.log.LogType" json:"access_log_type,omitempty"`
AccessLogPath string `protobuf:"bytes,5,opt,name=access_log_path,json=accessLogPath,proto3" json:"access_log_path,omitempty"`
EnableDnsLog bool `protobuf:"varint,6,opt,name=enable_dns_log,json=enableDnsLog,proto3" json:"enable_dns_log,omitempty"`
MaskAddress string `protobuf:"bytes,7,opt,name=mask_address,json=maskAddress,proto3" json:"mask_address,omitempty"`
}
func (x *Config) Reset() {
@ -160,13 +161,20 @@ func (x *Config) GetEnableDnsLog() bool {
return false
}
func (x *Config) GetMaskAddress() string {
if x != nil {
return x.MaskAddress
}
return ""
}
var File_app_log_config_proto protoreflect.FileDescriptor
var file_app_log_config_proto_rawDesc = []byte{
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@ -186,15 +194,18 @@ var file_app_log_config_proto_rawDesc = []byte{
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}
var (

1
app/log/config.proto
View file

@ -23,4 +23,5 @@ message Config {
LogType access_log_type = 4;
string access_log_path = 5;
bool enable_dns_log = 6;
string mask_address= 7;
}

66
app/log/log.go
View file

@ -4,6 +4,9 @@ package log
import (
"context"
"fmt"
"regexp"
"strings"
"sync"
"github.com/xtls/xray-core/common"
@ -101,18 +104,25 @@ func (g *Instance) Handle(msg log.Message) {
return
}
var Msg log.Message
if g.config.MaskAddress != "" {
Msg = &MaskedMsgWrapper{Message: msg, config: g.config}
} else {
Msg = msg
}
switch msg := msg.(type) {
case *log.AccessMessage:
if g.accessLogger != nil {
g.accessLogger.Handle(msg)
g.accessLogger.Handle(Msg)
}
case *log.DNSLog:
if g.dns && g.accessLogger != nil {
g.accessLogger.Handle(msg)
g.accessLogger.Handle(Msg)
}
case *log.GeneralMessage:
if g.errorLogger != nil && msg.Severity <= g.config.ErrorLogLevel {
g.errorLogger.Handle(msg)
g.errorLogger.Handle(Msg)
}
default:
// Swallow
@ -141,6 +151,56 @@ func (g *Instance) Close() error {
return nil
}
// MaskedMsgWrapper is to wrap the string() method to mask IP addresses in the log.
type MaskedMsgWrapper struct {
log.Message
config *Config
}
func (m *MaskedMsgWrapper) String() string {
str := m.Message.String()
ipv4Regex := regexp.MustCompile(`(\d{1,3}\.){3}\d{1,3}`)
ipv6Regex := regexp.MustCompile(`((?:[\da-fA-F]{0,4}:[\da-fA-F]{0,4}){2,7})(?:[\/\\%](\d{1,3}))?`)
// Process ipv4
maskedMsg := ipv4Regex.ReplaceAllStringFunc(str, func(ip string) string {
parts := strings.Split(ip, ".")
switch m.config.MaskAddress {
case "half":
return fmt.Sprintf("%s.%s.*.*", parts[0], parts[1])
case "quarter":
return fmt.Sprintf("%s.*.*.*", parts[0])
case "full":
return "[Masked IPv4]"
default:
return ip
}
})
// process ipv6
maskedMsg = ipv6Regex.ReplaceAllStringFunc(maskedMsg, func(ip string) string {
parts := strings.Split(ip, ":")
switch m.config.MaskAddress {
case "half":
if len(parts) >= 2 {
return fmt.Sprintf("%s:%s::/32", parts[0], parts[1])
}
case "quarter":
if len(parts) >= 1 {
return fmt.Sprintf("%s::/16", parts[0])
}
case "full":
return "Masked IPv6" // Do not use [Masked IPv6] like ipv4, or you will get "[[Masked IPv6]]" (v6 address already has [])
default:
return ip
}
return ip
})
return maskedMsg
}
func init() {
common.Must(common.RegisterConfig((*Config)(nil), func(ctx context.Context, config interface{}) (interface{}, error) {
return New(ctx, config.(*Config))

10
infra/conf/log.go
View file

@ -16,10 +16,11 @@ func DefaultLogConfig() *log.Config {
}
type LogConfig struct {
AccessLog string `json:"access"`
ErrorLog string `json:"error"`
LogLevel string `json:"loglevel"`
DNSLog bool `json:"dnsLog"`
AccessLog string `json:"access"`
ErrorLog string `json:"error"`
LogLevel string `json:"loglevel"`
DNSLog bool `json:"dnsLog"`
MaskAddress string `json:"maskAddress"`
}
func (v *LogConfig) Build() *log.Config {
@ -59,5 +60,6 @@ func (v *LogConfig) Build() *log.Config {
default:
config.ErrorLogLevel = clog.Severity_Warning
}
config.MaskAddress = v.MaskAddress
return config
}