update

expressvpn.go

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