Xray-core/infra/conf/vless.go

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package conf
import (
"encoding/json"
"path/filepath"
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"runtime"
"strconv"
"strings"
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"syscall"
"github.com/xtls/xray-core/common/errors"
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"github.com/xtls/xray-core/common/net"
"github.com/xtls/xray-core/common/protocol"
"github.com/xtls/xray-core/common/serial"
"github.com/xtls/xray-core/common/uuid"
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"github.com/xtls/xray-core/proxy/vless"
"github.com/xtls/xray-core/proxy/vless/inbound"
"github.com/xtls/xray-core/proxy/vless/outbound"
"google.golang.org/protobuf/proto"
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)
type VLessInboundFallback struct {
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Name string `json:"name"`
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Alpn string `json:"alpn"`
Path string `json:"path"`
Type string `json:"type"`
Dest json.RawMessage `json:"dest"`
Xver uint64 `json:"xver"`
}
type VLessInboundConfig struct {
Clients []json.RawMessage `json:"clients"`
Decryption string `json:"decryption"`
Fallback *VLessInboundFallback `json:"fallback"`
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Fallbacks []*VLessInboundFallback `json:"fallbacks"`
}
// Build implements Buildable
func (c *VLessInboundConfig) Build() (proto.Message, error) {
config := new(inbound.Config)
config.Clients = make([]*protocol.User, len(c.Clients))
for idx, rawUser := range c.Clients {
user := new(protocol.User)
if err := json.Unmarshal(rawUser, user); err != nil {
return nil, errors.New(`VLESS clients: invalid user`).Base(err)
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}
account := new(vless.Account)
if err := json.Unmarshal(rawUser, account); err != nil {
return nil, errors.New(`VLESS clients: invalid user`).Base(err)
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}
u, err := uuid.ParseString(account.Id)
if err != nil {
return nil, err
}
account.Id = u.String()
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switch account.Flow {
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case "", vless.XRV:
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default:
return nil, errors.New(`VLESS clients: "flow" doesn't support "` + account.Flow + `" in this version`)
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}
if account.Encryption != "" {
return nil, errors.New(`VLESS clients: "encryption" should not in inbound settings`)
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}
user.Account = serial.ToTypedMessage(account)
config.Clients[idx] = user
}
if c.Decryption != "none" {
return nil, errors.New(`VLESS settings: please add/set "decryption":"none" to every settings`)
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}
config.Decryption = c.Decryption
if c.Fallback != nil {
return nil, errors.New(`VLESS settings: please use "fallbacks":[{}] instead of "fallback":{}`)
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}
for _, fb := range c.Fallbacks {
var i uint16
var s string
if err := json.Unmarshal(fb.Dest, &i); err == nil {
s = strconv.Itoa(int(i))
} else {
_ = json.Unmarshal(fb.Dest, &s)
}
config.Fallbacks = append(config.Fallbacks, &inbound.Fallback{
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Name: fb.Name,
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Alpn: fb.Alpn,
Path: fb.Path,
Type: fb.Type,
Dest: s,
Xver: fb.Xver,
})
}
for _, fb := range config.Fallbacks {
/*
if fb.Alpn == "h2" && fb.Path != "" {
return nil, errors.New(`VLESS fallbacks: "alpn":"h2" doesn't support "path"`)
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}
*/
if fb.Path != "" && fb.Path[0] != '/' {
return nil, errors.New(`VLESS fallbacks: "path" must be empty or start with "/"`)
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}
if fb.Type == "" && fb.Dest != "" {
if fb.Dest == "serve-ws-none" {
fb.Type = "serve"
} else if filepath.IsAbs(fb.Dest) || fb.Dest[0] == '@' {
fb.Type = "unix"
if strings.HasPrefix(fb.Dest, "@@") && (runtime.GOOS == "linux" || runtime.GOOS == "android") {
fullAddr := make([]byte, len(syscall.RawSockaddrUnix{}.Path)) // may need padding to work with haproxy
copy(fullAddr, fb.Dest[1:])
fb.Dest = string(fullAddr)
}
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} else {
if _, err := strconv.Atoi(fb.Dest); err == nil {
fb.Dest = "127.0.0.1:" + fb.Dest
}
if _, _, err := net.SplitHostPort(fb.Dest); err == nil {
fb.Type = "tcp"
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}
}
}
if fb.Type == "" {
return nil, errors.New(`VLESS fallbacks: please fill in a valid value for every "dest"`)
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}
if fb.Xver > 2 {
return nil, errors.New(`VLESS fallbacks: invalid PROXY protocol version, "xver" only accepts 0, 1, 2`)
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}
}
return config, nil
}
type VLessOutboundVnext struct {
Address *Address `json:"address"`
Port uint16 `json:"port"`
Users []json.RawMessage `json:"users"`
}
type VLessOutboundConfig struct {
Vnext []*VLessOutboundVnext `json:"vnext"`
}
// Build implements Buildable
func (c *VLessOutboundConfig) Build() (proto.Message, error) {
config := new(outbound.Config)
if len(c.Vnext) == 0 {
return nil, errors.New(`VLESS settings: "vnext" is empty`)
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}
config.Vnext = make([]*protocol.ServerEndpoint, len(c.Vnext))
for idx, rec := range c.Vnext {
if rec.Address == nil {
return nil, errors.New(`VLESS vnext: "address" is not set`)
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}
if len(rec.Users) == 0 {
return nil, errors.New(`VLESS vnext: "users" is empty`)
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}
spec := &protocol.ServerEndpoint{
Address: rec.Address.Build(),
Port: uint32(rec.Port),
User: make([]*protocol.User, len(rec.Users)),
}
for idx, rawUser := range rec.Users {
user := new(protocol.User)
if err := json.Unmarshal(rawUser, user); err != nil {
return nil, errors.New(`VLESS users: invalid user`).Base(err)
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}
account := new(vless.Account)
if err := json.Unmarshal(rawUser, account); err != nil {
return nil, errors.New(`VLESS users: invalid user`).Base(err)
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}
u, err := uuid.ParseString(account.Id)
if err != nil {
return nil, err
}
account.Id = u.String()
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switch account.Flow {
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case "", vless.XRV, vless.XRV + "-udp443":
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default:
return nil, errors.New(`VLESS users: "flow" doesn't support "` + account.Flow + `" in this version`)
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}
if account.Encryption != "none" {
return nil, errors.New(`VLESS users: please add/set "encryption":"none" for every user`)
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}
user.Account = serial.ToTypedMessage(account)
spec.User[idx] = user
}
config.Vnext[idx] = spec
}
return config, nil
}