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init.go
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init.go
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package main
import (
"errors"
"flag"
"fmt"
"github.com/BurntSushi/toml"
"os"
"strings"
)
type (
Config struct {
ServerAddress string
ServerPort int
Username string
Password string
DisableServerConfig bool
DisableZJUConfig bool
DisableZJUDNS bool
DisableMultiLine bool
ProxyAll bool
SocksBind string
SocksUser string
SocksPasswd string
HTTPBind string
ShadowsocksURL string
TUNMode bool
AddRoute bool
DNSTTL uint64
DisableKeepAlive bool
ZJUDNSServer string
SecondaryDNSServer string
DNSServerBind string
DNSHijack bool
DebugDump bool
PortForwardingList []SinglePortForwarding
CustomDNSList []SingleCustomDNS
TwfID string
}
SinglePortForwarding struct {
NetworkType string
BindAddress string
RemoteAddress string
}
SingleCustomDNS struct {
HostName string `toml:"host_name"`
IP string `toml:"ip"`
}
)
type (
ConfigTOML struct {
ServerAddress *string `toml:"server_address"`
ServerPort *int `toml:"server_port"`
Username *string `toml:"username"`
Password *string `toml:"password"`
DisableServerConfig *bool `toml:"disable_server_config"`
DisableZJUConfig *bool `toml:"disable_zju_config"`
DisableZJUDNS *bool `toml:"disable_zju_dns"`
DisableMultiLine *bool `toml:"disable_multi_line"`
ProxyAll *bool `toml:"proxy_all"`
SocksBind *string `toml:"socks_bind"`
SocksUser *string `toml:"socks_user"`
SocksPasswd *string `toml:"socks_passwd"`
HTTPBind *string `toml:"http_bind"`
ShadowsocksURL *string `toml:"shadowsocks_url"`
TUNMode *bool `toml:"tun_mode"`
AddRoute *bool `toml:"add_route"`
DNSTTL *uint64 `toml:"dns_ttl"`
DisableKeepAlive *bool `toml:"disable_keep_alive"`
ZJUDNSServer *string `toml:"zju_dns_server"`
SecondaryDNSServer *string `toml:"secondary_dns_server"`
DNSServerBind *string `toml:"dns_server_bind"`
DNSHijack *bool `toml:"dns_hijack"`
DebugDump *bool `toml:"debug_dump"`
PortForwarding []SinglePortForwardingTOML `toml:"port_forwarding"`
CustomDNS []SingleCustomDNSTOML `toml:"custom_dns"`
}
SinglePortForwardingTOML struct {
NetworkType *string `toml:"network_type"`
BindAddress *string `toml:"bind_address"`
RemoteAddress *string `toml:"remote_address"`
}
SingleCustomDNSTOML struct {
HostName *string `toml:"host_name"`
IP *string `toml:"ip"`
}
)
func getTOMLVal[T int | uint64 | string | bool](valPointer *T, defaultVal T) T {
if valPointer == nil {
return defaultVal
} else {
return *valPointer
}
}
func parseTOMLConfig(configFile string, conf *Config) error {
var confTOML ConfigTOML
_, err := toml.DecodeFile(configFile, &confTOML)
if err != nil {
return errors.New("ZJU Connect: error parsing the config file")
}
conf.ServerAddress = getTOMLVal(confTOML.ServerAddress, "rvpn.zju.edu.cn")
conf.ServerPort = getTOMLVal(confTOML.ServerPort, 443)
conf.Username = getTOMLVal(confTOML.Username, "")
conf.Password = getTOMLVal(confTOML.Password, "")
conf.DisableServerConfig = getTOMLVal(confTOML.DisableServerConfig, false)
conf.DisableZJUConfig = getTOMLVal(confTOML.DisableZJUConfig, false)
conf.DisableZJUDNS = getTOMLVal(confTOML.DisableZJUDNS, false)
conf.DisableMultiLine = getTOMLVal(confTOML.DisableMultiLine, false)
conf.ProxyAll = getTOMLVal(confTOML.ProxyAll, false)
conf.SocksBind = getTOMLVal(confTOML.SocksBind, ":1080")
conf.SocksUser = getTOMLVal(confTOML.SocksUser, "")
conf.SocksPasswd = getTOMLVal(confTOML.SocksPasswd, "")
conf.HTTPBind = getTOMLVal(confTOML.HTTPBind, ":1081")
conf.ShadowsocksURL = getTOMLVal(confTOML.ShadowsocksURL, "")
conf.TUNMode = getTOMLVal(confTOML.TUNMode, false)
conf.AddRoute = getTOMLVal(confTOML.AddRoute, false)
conf.DNSTTL = getTOMLVal(confTOML.DNSTTL, uint64(3600))
conf.DebugDump = getTOMLVal(confTOML.DebugDump, false)
conf.DisableKeepAlive = getTOMLVal(confTOML.DisableKeepAlive, false)
conf.ZJUDNSServer = getTOMLVal(confTOML.ZJUDNSServer, "10.10.0.21")
conf.SecondaryDNSServer = getTOMLVal(confTOML.SecondaryDNSServer, "114.114.114.114")
conf.DNSServerBind = getTOMLVal(confTOML.DNSServerBind, "")
conf.DNSHijack = getTOMLVal(confTOML.DNSHijack, false)
for _, singlePortForwarding := range confTOML.PortForwarding {
if singlePortForwarding.NetworkType == nil {
return errors.New("ZJU Connect: network type is not set")
}
if singlePortForwarding.BindAddress == nil {
return errors.New("ZJU Connect: bind address is not set")
}
if singlePortForwarding.RemoteAddress == nil {
return errors.New("ZJU Connect: remote address is not set")
}
conf.PortForwardingList = append(conf.PortForwardingList, SinglePortForwarding{
NetworkType: *singlePortForwarding.NetworkType,
BindAddress: *singlePortForwarding.BindAddress,
RemoteAddress: *singlePortForwarding.RemoteAddress,
})
}
for _, singleCustomDns := range confTOML.CustomDNS {
if singleCustomDns.HostName == nil {
return errors.New("ZJU Connect: host name is not set")
}
if singleCustomDns.IP == nil {
fmt.Println("ZJU Connect: IP is not set")
return errors.New("ZJU Connect: IP is not set")
}
conf.CustomDNSList = append(conf.CustomDNSList, SingleCustomDNS{
HostName: *singleCustomDns.HostName,
IP: *singleCustomDns.IP,
})
}
return nil
}
func init() {
configFile, tcpPortForwarding, udpPortForwarding, customDns := "", "", "", ""
showVersion := false
flag.StringVar(&conf.ServerAddress, "server", "rvpn.zju.edu.cn", "EasyConnect server address")
flag.IntVar(&conf.ServerPort, "port", 443, "EasyConnect port address")
flag.StringVar(&conf.Username, "username", "", "Your username")
flag.StringVar(&conf.Password, "password", "", "Your password")
flag.BoolVar(&conf.DisableServerConfig, "disable-server-config", false, "Don't parse server config")
flag.BoolVar(&conf.DisableZJUConfig, "disable-zju-config", false, "Don't use ZJU config")
flag.BoolVar(&conf.DisableZJUDNS, "disable-zju-dns", false, "Use local DNS instead of ZJU DNS")
flag.BoolVar(&conf.DisableMultiLine, "disable-multi-line", false, "Disable multi line auto select")
flag.BoolVar(&conf.ProxyAll, "proxy-all", false, "Proxy all IPv4 traffic")
flag.StringVar(&conf.SocksBind, "socks-bind", ":1080", "The address SOCKS5 server listens on (e.g. 127.0.0.1:1080)")
flag.StringVar(&conf.SocksUser, "socks-user", "", "SOCKS5 username, default is don't use auth")
flag.StringVar(&conf.SocksPasswd, "socks-passwd", "", "SOCKS5 password, default is don't use auth")
flag.StringVar(&conf.HTTPBind, "http-bind", ":1081", "The address HTTP server listens on (e.g. 127.0.0.1:1081)")
flag.StringVar(&conf.ShadowsocksURL, "shadowsocks-url", "", "The address Shadowsocks server listens on (e.g. ss://method:password@host:port)")
flag.BoolVar(&conf.TUNMode, "tun-mode", false, "Enable TUN mode (experimental)")
flag.BoolVar(&conf.AddRoute, "add-route", false, "Add route from rules for TUN interface")
flag.Uint64Var(&conf.DNSTTL, "dns-ttl", 3600, "DNS record time to live, unit is second")
flag.BoolVar(&conf.DebugDump, "debug-dump", false, "Enable traffic debug dump (only for debug usage)")
flag.BoolVar(&conf.DisableKeepAlive, "disable-keep-alive", false, "Disable keep alive")
flag.StringVar(&conf.ZJUDNSServer, "zju-dns-server", "10.10.0.21", "ZJU DNS server address")
flag.StringVar(&conf.SecondaryDNSServer, "secondary-dns-server", "114.114.114.114", "Secondary DNS server address. Leave empty to use system default DNS server")
flag.StringVar(&conf.DNSServerBind, "dns-server-bind", "", "The address DNS server listens on (e.g. 127.0.0.1:53)")
flag.BoolVar(&conf.DNSHijack, "dns-hijack", false, "Hijack all dns query to ZJU Connect")
flag.StringVar(&conf.TwfID, "twf-id", "", "Login using twfID captured (mostly for debug usage)")
flag.StringVar(&tcpPortForwarding, "tcp-port-forwarding", "", "TCP port forwarding (e.g. 0.0.0.0:9898-10.10.98.98:80,127.0.0.1:9899-10.10.98.98:80)")
flag.StringVar(&udpPortForwarding, "udp-port-forwarding", "", "UDP port forwarding (e.g. 127.0.0.1:53-10.10.0.21:53)")
flag.StringVar(&customDns, "custom-dns", "", "Custom set dns lookup (e.g. www.cc98.org:10.10.98.98,appservice.zju.edu.cn:10.203.8.198)")
flag.StringVar(&configFile, "config", "", "Config file")
flag.BoolVar(&showVersion, "version", false, "Show version")
flag.Parse()
if showVersion {
fmt.Printf("ZJU Connect v%s\n", zjuConnectVersion)
os.Exit(0)
}
if configFile != "" {
err := parseTOMLConfig(configFile, &conf)
if err != nil {
fmt.Println(err)
os.Exit(1)
}
} else {
if tcpPortForwarding != "" {
forwardingStringList := strings.Split(tcpPortForwarding, ",")
for _, forwardingString := range forwardingStringList {
addressStringList := strings.Split(forwardingString, "-")
if len(addressStringList) != 2 {
fmt.Println("ZJU Connect: wrong tcp port forwarding format")
os.Exit(1)
}
conf.PortForwardingList = append(conf.PortForwardingList, SinglePortForwarding{
NetworkType: "tcp",
BindAddress: addressStringList[0],
RemoteAddress: addressStringList[1],
})
}
}
if udpPortForwarding != "" {
forwardingStringList := strings.Split(udpPortForwarding, ",")
for _, forwardingString := range forwardingStringList {
addressStringList := strings.Split(forwardingString, "-")
if len(addressStringList) != 2 {
fmt.Println("ZJU Connect: wrong udp port forwarding format")
os.Exit(1)
}
conf.PortForwardingList = append(conf.PortForwardingList, SinglePortForwarding{
NetworkType: "udp",
BindAddress: addressStringList[0],
RemoteAddress: addressStringList[1],
})
}
}
if customDns != "" {
dnsList := strings.Split(customDns, ",")
for _, dnsString := range dnsList {
dnsStringSplit := strings.Split(dnsString, ":")
if len(dnsStringSplit) != 2 {
fmt.Println("ZJU Connect: wrong custom dns format")
os.Exit(1)
}
conf.CustomDNSList = append(conf.CustomDNSList, SingleCustomDNS{
HostName: dnsStringSplit[0],
IP: dnsStringSplit[1],
})
}
}
}
if conf.ServerAddress == "" || ((conf.Username == "" || conf.Password == "") && conf.TwfID == "") {
fmt.Println("ZJU Connect")
fmt.Println("Please see: https://github.com/mythologyli/zju-connect")
fmt.Printf("\nUsage: %s -username <username> -password <password>\n", os.Args[0])
fmt.Println("\nFull usage:")
flag.PrintDefaults()
os.Exit(1)
}
}