mirror of
https://github.com/davegallant/vpngate.git
synced 2026-03-03 10:06:36 +00:00
124 lines
3.4 KiB
Go
124 lines
3.4 KiB
Go
package cmd
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import (
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"encoding/base64"
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"fmt"
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"math/rand"
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"os"
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"strings"
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"github.com/AlecAivazis/survey/v2"
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"github.com/rs/zerolog/log"
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"github.com/davegallant/vpngate/pkg/vpn"
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"github.com/spf13/cobra"
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)
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var (
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flagRandom bool
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flagReconnect bool
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flagProxy string
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flagSocks5Proxy string
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)
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func init() {
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connectCmd.Flags().BoolVarP(&flagRandom, "random", "r", false, "connect to a random server")
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connectCmd.Flags().BoolVarP(&flagReconnect, "reconnect", "t", false, "continually attempt to connect to the server")
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connectCmd.Flags().StringVarP(&flagProxy, "proxy", "p", "", "provide a http/https proxy server to make requests through (i.e. http://127.0.0.1:8080)")
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connectCmd.Flags().StringVarP(&flagSocks5Proxy, "socks5", "s", "", "provide a socks5 proxy server to make requests through (i.e. 127.0.0.1:1080)")
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rootCmd.AddCommand(connectCmd)
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}
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var connectCmd = &cobra.Command{
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Use: "connect",
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Short: "Connect to a vpn server (survey selection appears if hostname is not provided)",
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Long: `Connect to a vpn from a list of relay servers`,
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Args: cobra.RangeArgs(0, 1),
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Run: func(cmd *cobra.Command, args []string) {
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vpnServers, err := vpn.GetList(flagProxy, flagSocks5Proxy)
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if err != nil {
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log.Fatal().Msg(err.Error())
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}
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// Build server selection options and hostname lookup map
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serverSelection := make([]string, len(*vpnServers))
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serverMap := make(map[string]vpn.Server, len(*vpnServers))
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for i, s := range *vpnServers {
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serverSelection[i] = fmt.Sprintf("%s (%s)", s.HostName, s.CountryLong)
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serverMap[s.HostName] = s
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}
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selection := ""
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var serverSelected vpn.Server
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if !flagRandom {
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if len(args) > 0 {
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selection = args[0]
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} else {
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prompt := &survey.Select{
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Message: "Choose a server:",
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Options: serverSelection,
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}
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err := survey.AskOne(prompt, &selection, survey.WithPageSize(10))
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if err != nil {
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log.Fatal().Msg("Unable to obtain hostname from survey")
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}
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}
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// Lookup server from selection using map for O(1) lookup
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hostname := extractHostname(selection)
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if server, exists := serverMap[hostname]; exists {
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serverSelected = server
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} else {
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log.Fatal().Msgf("Server '%s' was not found", selection)
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}
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}
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for {
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if flagRandom {
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// Select a random server
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serverSelected = (*vpnServers)[rand.Intn(len(*vpnServers))]
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}
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decodedConfig, err := base64.StdEncoding.DecodeString(serverSelected.OpenVpnConfigData)
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if err != nil {
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log.Fatal().Msg(err.Error())
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}
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tmpfile, err := os.CreateTemp("", "vpngate-openvpn-config-")
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if err != nil {
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log.Fatal().Msg(err.Error())
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}
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if _, err := tmpfile.Write(decodedConfig); err != nil {
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log.Fatal().Msg(err.Error())
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}
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if err := tmpfile.Close(); err != nil {
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log.Fatal().Msg(err.Error())
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}
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log.Info().Msgf("Connecting to %s (%s) in %s", serverSelected.HostName, serverSelected.IPAddr, serverSelected.CountryLong)
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err = vpn.Connect(tmpfile.Name())
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if err != nil && !flagReconnect {
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// VPN connection failed and reconnect is disabled
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_ = os.Remove(tmpfile.Name())
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log.Fatal().Msg("VPN connection failed")
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}
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// Always try to clean up temporary file
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_ = os.Remove(tmpfile.Name())
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}
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},
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}
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// extractHostname extracts the hostname from the selection string (format: "hostname (country)")
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func extractHostname(selection string) string {
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parts := strings.Split(selection, " (")
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if len(parts) > 0 {
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return parts[0]
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}
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return selection
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} |