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118 lines
2.8 KiB
118 lines
2.8 KiB
package conf
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import (
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"encoding/base64"
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"encoding/hex"
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"github.com/golang/protobuf/proto"
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"github.com/xtls/xray-core/proxy/wireguard"
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)
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type WireGuardPeerConfig struct {
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PublicKey string `json:"publicKey"`
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PreSharedKey string `json:"preSharedKey"`
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Endpoint string `json:"endpoint"`
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KeepAlive int `json:"keepAlive"`
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AllowedIPs []string `json:"allowedIPs,omitempty"`
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}
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func (c *WireGuardPeerConfig) Build() (proto.Message, error) {
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var err error
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config := new(wireguard.PeerConfig)
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config.PublicKey, err = parseWireGuardKey(c.PublicKey)
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if err != nil {
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return nil, err
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}
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if c.PreSharedKey != "" {
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config.PreSharedKey, err = parseWireGuardKey(c.PreSharedKey)
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if err != nil {
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return nil, err
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}
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} else {
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config.PreSharedKey = "0000000000000000000000000000000000000000000000000000000000000000"
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}
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config.Endpoint = c.Endpoint
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// default 0
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config.KeepAlive = int32(c.KeepAlive)
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if c.AllowedIPs == nil {
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config.AllowedIps = []string{"0.0.0.0/0", "::0/0"}
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} else {
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config.AllowedIps = c.AllowedIPs
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}
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return config, nil
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}
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type WireGuardConfig struct {
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SecretKey string `json:"secretKey"`
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Address []string `json:"address"`
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Peers []*WireGuardPeerConfig `json:"peers"`
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MTU int `json:"mtu"`
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NumWorkers int `json:"workers"`
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Reserved []byte `json:"reserved"`
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}
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func (c *WireGuardConfig) Build() (proto.Message, error) {
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config := new(wireguard.DeviceConfig)
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var err error
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config.SecretKey, err = parseWireGuardKey(c.SecretKey)
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if err != nil {
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return nil, err
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}
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if c.Address == nil {
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// bogon ips
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config.Endpoint = []string{"10.0.0.1", "fd59:7153:2388:b5fd:0000:0000:0000:0001"}
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} else {
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config.Endpoint = c.Address
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}
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if c.Peers != nil {
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config.Peers = make([]*wireguard.PeerConfig, len(c.Peers))
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for i, p := range c.Peers {
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msg, err := p.Build()
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if err != nil {
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return nil, err
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}
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config.Peers[i] = msg.(*wireguard.PeerConfig)
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}
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}
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if c.MTU == 0 {
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config.Mtu = 1420
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} else {
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config.Mtu = int32(c.MTU)
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}
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// these a fallback code exists in github.com/nanoda0523/wireguard-go code,
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// we don't need to process fallback manually
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config.NumWorkers = int32(c.NumWorkers)
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if len(c.Reserved) != 0 && len(c.Reserved) != 3 {
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return nil, newError(`"reserved" should be empty or 3 bytes`)
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}
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config.Reserved = c.Reserved
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return config, nil
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}
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func parseWireGuardKey(str string) (string, error) {
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if len(str) != 64 {
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// may in base64 form
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dat, err := base64.StdEncoding.DecodeString(str)
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if err != nil {
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return "", err
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}
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if len(dat) != 32 {
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return "", newError("key should be 32 bytes: " + str)
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}
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return hex.EncodeToString(dat), err
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} else {
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// already hex form
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return str, nil
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}
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}
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