github.com/v2fly/v2ray-core/v5@v5.16.2-0.20240507031116-8191faa6e095/infra/conf/v4/socks.go (about)

     1  package v4
     2  
     3  import (
     4  	"encoding/json"
     5  	"strings"
     6  
     7  	"github.com/golang/protobuf/proto"
     8  
     9  	"github.com/v2fly/v2ray-core/v5/common/protocol"
    10  	"github.com/v2fly/v2ray-core/v5/common/serial"
    11  	"github.com/v2fly/v2ray-core/v5/infra/conf/cfgcommon"
    12  	"github.com/v2fly/v2ray-core/v5/proxy/socks"
    13  )
    14  
    15  type SocksAccount struct {
    16  	Username string `json:"user"`
    17  	Password string `json:"pass"`
    18  }
    19  
    20  func (v *SocksAccount) Build() *socks.Account {
    21  	return &socks.Account{
    22  		Username: v.Username,
    23  		Password: v.Password,
    24  	}
    25  }
    26  
    27  const (
    28  	AuthMethodNoAuth   = "noauth"
    29  	AuthMethodUserPass = "password"
    30  )
    31  
    32  type SocksServerConfig struct {
    33  	AuthMethod string             `json:"auth"`
    34  	Accounts   []*SocksAccount    `json:"accounts"`
    35  	UDP        bool               `json:"udp"`
    36  	Host       *cfgcommon.Address `json:"ip"`
    37  	Timeout    uint32             `json:"timeout"`
    38  	UserLevel  uint32             `json:"userLevel"`
    39  }
    40  
    41  func (v *SocksServerConfig) Build() (proto.Message, error) {
    42  	config := new(socks.ServerConfig)
    43  	switch v.AuthMethod {
    44  	case AuthMethodNoAuth:
    45  		config.AuthType = socks.AuthType_NO_AUTH
    46  	case AuthMethodUserPass:
    47  		config.AuthType = socks.AuthType_PASSWORD
    48  	default:
    49  		// newError("unknown socks auth method: ", v.AuthMethod, ". Default to noauth.").AtWarning().WriteToLog()
    50  		config.AuthType = socks.AuthType_NO_AUTH
    51  	}
    52  
    53  	if len(v.Accounts) > 0 {
    54  		config.Accounts = make(map[string]string, len(v.Accounts))
    55  		for _, account := range v.Accounts {
    56  			config.Accounts[account.Username] = account.Password
    57  		}
    58  	}
    59  
    60  	config.UdpEnabled = v.UDP
    61  	if v.Host != nil {
    62  		config.Address = v.Host.Build()
    63  	}
    64  
    65  	config.Timeout = v.Timeout
    66  	config.UserLevel = v.UserLevel
    67  	return config, nil
    68  }
    69  
    70  type SocksRemoteConfig struct {
    71  	Address *cfgcommon.Address `json:"address"`
    72  	Port    uint16             `json:"port"`
    73  	Users   []json.RawMessage  `json:"users"`
    74  }
    75  
    76  type SocksClientConfig struct {
    77  	Servers []*SocksRemoteConfig `json:"servers"`
    78  	Version string               `json:"version"`
    79  }
    80  
    81  func (v *SocksClientConfig) Build() (proto.Message, error) {
    82  	config := new(socks.ClientConfig)
    83  	config.Server = make([]*protocol.ServerEndpoint, len(v.Servers))
    84  	switch strings.ToLower(v.Version) {
    85  	case "4":
    86  		config.Version = socks.Version_SOCKS4
    87  	case "4a":
    88  		config.Version = socks.Version_SOCKS4A
    89  	case "", "5":
    90  		config.Version = socks.Version_SOCKS5
    91  	default:
    92  		return nil, newError("failed to parse socks server version: ", v.Version).AtError()
    93  	}
    94  	for idx, serverConfig := range v.Servers {
    95  		server := &protocol.ServerEndpoint{
    96  			Address: serverConfig.Address.Build(),
    97  			Port:    uint32(serverConfig.Port),
    98  		}
    99  		for _, rawUser := range serverConfig.Users {
   100  			user := new(protocol.User)
   101  			if err := json.Unmarshal(rawUser, user); err != nil {
   102  				return nil, newError("failed to parse Socks user").Base(err).AtError()
   103  			}
   104  			account := new(SocksAccount)
   105  			if err := json.Unmarshal(rawUser, account); err != nil {
   106  				return nil, newError("failed to parse socks account").Base(err).AtError()
   107  			}
   108  			if config.Version != socks.Version_SOCKS5 && account.Password != "" {
   109  				return nil, newError("password is only supported in socks5").AtError()
   110  			}
   111  			user.Account = serial.ToTypedMessage(account.Build())
   112  			server.User = append(server.User, user)
   113  		}
   114  		config.Server[idx] = server
   115  	}
   116  	return config, nil
   117  }