101 lines
1.9 KiB
Go
101 lines
1.9 KiB
Go
package main
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// get https://www.expressvpn.com/vpn-server
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// remove everyting starting with >
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// remove until "Not supported" and after What the green checks mean
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import (
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"bufio"
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"errors"
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"fmt"
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"net"
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"net/http"
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"strings"
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"sync"
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"time"
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)
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type ExpressVPN struct {
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}
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func (s *ExpressVPN) ServerList() (error, *[]string) {
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var mux sync.Mutex
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requestCount := 0
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VPNNames := map[string]bool{}
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// Create HTTP client with timeout
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client := &http.Client{
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Timeout: 30 * time.Second,
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}
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// Make request
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resp, err := client.Get("https://www.expressvpn.com/vpn-server")
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if err != nil {
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return err, nil
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}
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defer resp.Body.Close()
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if resp.StatusCode != 200 {
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return errors.New(fmt.Sprintf("Server List URL is not valid (%d)\n", resp.StatusCode)), nil
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}
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buf := bufio.NewReader(bufio.NewReader(resp.Body))
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start := false
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for {
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line, err := buf.ReadString('\n')
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if err != nil {
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break
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}
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line = strings.Trim(line, "\n\r ")
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if strings.HasPrefix(line, "<") {
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continue
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}
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if line == "Not supported" {
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start = true
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continue
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}
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if line == "What the green checks mean" {
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start = false
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}
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if !start {
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continue
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}
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if line == "" {
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continue
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}
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requestCount++
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go func(line string) {
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line = strings.ToLower(line)
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line = strings.Replace(line, " & ", "", -1)
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line = strings.Replace(line, " ", "", -1)
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name := fmt.Sprintf("%s-ca-version-2.expressnetw.com", line)
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if _, err := net.ResolveIPAddr("ip4", name); err == nil {
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mux.Lock()
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VPNNames[name] = true
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mux.Unlock()
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}
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requestCount--
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}(line)
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}
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// wait for all resolutions
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for requestCount > 0 {
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time.Sleep(100 * time.Millisecond)
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}
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if len(VPNNames) == 0 {
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return errors.New("Can't get a list of VPN endpoints"), nil
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}
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// add the right values
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keys := make([]string, 0, len(VPNNames))
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for k := range VPNNames {
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keys = append(keys, k)
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}
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return nil, &keys
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}
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