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config.go
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config.go
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/*
* SPDX-License-Identifier: AGPL-3.0-only
* Copyright (c) 2022-2023, daeuniverse Organization <dae@v2raya.org>
*/
package config
import (
"fmt"
"reflect"
"time"
"github.com/daeuniverse/dae/pkg/config_parser"
)
type Global struct {
TproxyPort uint16 `mapstructure:"tproxy_port" default:"12345"`
TproxyPortProtect bool `mapstructure:"tproxy_port_protect" default:"true"`
SoMarkFromDae uint32 `mapstructure:"so_mark_from_dae"`
LogLevel string `mapstructure:"log_level" default:"info"`
// We use DirectTcpCheckUrl to check (tcp)*(ipv4/ipv6) connectivity for direct.
//DirectTcpCheckUrl string `mapstructure:"direct_tcp_check_url" default:"http://www.qualcomm.cn/generate_204"`
TcpCheckUrl []string `mapstructure:"tcp_check_url" default:"http://cp.cloudflare.com,1.1.1.1,2606:4700:4700::1111"`
TcpCheckHttpMethod string `mapstructure:"tcp_check_http_method" default:"HEAD"` // Use 'HEAD' because some server implementations bypass accounting for this kind of traffic.
UdpCheckDns []string `mapstructure:"udp_check_dns" default:"dns.google.com:53,8.8.8.8,2001:4860:4860::8888"`
CheckInterval time.Duration `mapstructure:"check_interval" default:"30s"`
CheckTolerance time.Duration `mapstructure:"check_tolerance" default:"0"`
LanInterface []string `mapstructure:"lan_interface"`
WanInterface []string `mapstructure:"wan_interface"`
AllowInsecure bool `mapstructure:"allow_insecure" default:"false"`
DialMode string `mapstructure:"dial_mode" default:"domain"`
DisableWaitingNetwork bool `mapstructure:"disable_waiting_network" default:"false"`
AutoConfigKernelParameter bool `mapstructure:"auto_config_kernel_parameter" default:"false"`
SniffingTimeout time.Duration `mapstructure:"sniffing_timeout" default:"100ms"`
TlsImplementation string `mapstructure:"tls_implementation" default:"tls"`
UtlsImitate string `mapstructure:"utls_imitate" default:"chrome_auto"`
}
type Utls struct {
Imitate string `mapstructure:"imitate"`
}
type FunctionOrString interface{}
func FunctionOrStringToFunction(fs FunctionOrString) (f *config_parser.Function) {
switch fs := fs.(type) {
case string:
return &config_parser.Function{Name: fs}
case *config_parser.Function:
return fs
default:
panic(fmt.Sprintf("unknown type of 'fallback' in section routing: %T", fs))
}
}
type FunctionListOrString interface{}
func FunctionListOrStringToFunctionList(fs FunctionListOrString) (f []*config_parser.Function) {
switch fs := fs.(type) {
case string:
return []*config_parser.Function{{Name: fs}}
case []*config_parser.Function:
return fs
default:
panic(fmt.Sprintf("unknown type of 'fallback' in section routing: %T", fs))
}
}
type Group struct {
Name string `mapstructure:"_"`
Filter []*config_parser.Function `mapstructure:"filter"`
Policy FunctionListOrString `mapstructure:"policy" required:""`
}
type DnsRequestRouting struct {
Rules []*config_parser.RoutingRule `mapstructure:"_"`
Fallback FunctionOrString `mapstructure:"fallback" required:""`
}
type DnsResponseRouting struct {
Rules []*config_parser.RoutingRule `mapstructure:"_"`
Fallback FunctionOrString `mapstructure:"fallback" required:""`
}
type DnsRouting struct {
Request DnsRequestRouting `mapstructure:"request"`
Response DnsResponseRouting `mapstructure:"response"`
}
type KeyableString string
type Dns struct {
IpVersionPrefer int `mapstructure:"ipversion_prefer"`
FixedDomainTtl []KeyableString `mapstructure:"fixed_domain_ttl"`
Upstream []KeyableString `mapstructure:"upstream"`
Routing DnsRouting `mapstructure:"routing"`
}
type Routing struct {
Rules []*config_parser.RoutingRule `mapstructure:"_"`
Fallback FunctionOrString `mapstructure:"fallback" default:"direct"`
}
type Config struct {
Global Global `mapstructure:"global" required:"" desc:"GlobalDesc"`
Subscription []KeyableString `mapstructure:"subscription"`
Node []KeyableString `mapstructure:"node"`
Group []Group `mapstructure:"group" desc:"GroupDesc"`
Routing Routing `mapstructure:"routing" required:""`
Dns Dns `mapstructure:"dns" desc:"DnsDesc"`
}
// New params from sections. This func assumes merging (section "include") and deduplication for section names has been executed.
func New(sections []*config_parser.Section) (conf *Config, err error) {
// Set up name to section for further use.
type Section struct {
Val *config_parser.Section
Parsed bool
}
nameToSection := make(map[string]*Section)
for _, section := range sections {
nameToSection[section.Name] = &Section{Val: section}
}
conf = &Config{}
// Use specified parser to parse corresponding section.
_val := reflect.ValueOf(conf)
val := _val.Elem()
typ := val.Type()
for i := 0; i < val.NumField(); i++ {
field := val.Field(i)
structField := typ.Field(i)
// Find corresponding section from sections.
sectionName, ok := structField.Tag.Lookup("mapstructure")
if !ok {
return nil, fmt.Errorf("no mapstructure is specified in field %v", structField.Name)
}
section, ok := nameToSection[sectionName]
if !ok {
if _, required := structField.Tag.Lookup("required"); required {
return nil, fmt.Errorf("section %v is required but not provided", sectionName)
} else {
continue
}
}
// Parse section and unmarshal to field.
if err := SectionParser(field.Addr(), section.Val); err != nil {
return nil, fmt.Errorf("failed to parse \"%v\": %w", sectionName, err)
}
section.Parsed = true
}
// Report unknown. Not "unused" because we assume section name deduplication has been executed before this func.
for name, section := range nameToSection {
if section.Val.Name == "include" {
continue
}
if !section.Parsed {
return nil, fmt.Errorf("unknown section: %v", name)
}
}
// Apply config patches.
for _, patch := range patches {
if err = patch(conf); err != nil {
return nil, err
}
}
return conf, nil
}