107 lines
2.3 KiB
Go
107 lines
2.3 KiB
Go
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package main
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import (
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"archive/zip"
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"bytes"
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"flag"
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"fmt"
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"io/ioutil"
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"net/http"
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"os"
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"sort"
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"strings"
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"time"
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"github.com/qdm12/golibs/network"
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)
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func main() {
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os.Exit(_main())
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}
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func _main() int {
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provider := flag.String("provider", "surfshark", "VPN provider to parse openvpn files for, can be 'surfshark'")
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flag.Parse()
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var url string
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switch *provider {
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case "surfshark":
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url = "https://account.surfshark.com/api/v1/server/configurations"
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default:
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fmt.Printf("Provider %q is not supported\n", *provider)
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return 1
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}
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client := network.NewClient(time.Second)
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zipBytes, status, err := client.GetContent(url)
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if err != nil {
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fmt.Println(err)
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return 1
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} else if status != http.StatusOK {
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fmt.Printf("Getting %s results in HTTP status code %d\n", url, status)
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return 1
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}
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contents, err := zipExtractAll(zipBytes)
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if err != nil {
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fmt.Println(err)
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return 1
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}
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uniqueSubdomains := make(map[string]struct{})
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for _, content := range contents {
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subdomain, err := extractInformation(content)
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if err != nil {
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fmt.Println(err)
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return 1
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}
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uniqueSubdomains[subdomain] = struct{}{}
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}
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subdomains := make([]string, len(uniqueSubdomains))
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i := 0
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for subdomain := range uniqueSubdomains {
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subdomains[i] = subdomain
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i++
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}
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sort.Slice(subdomains, func(i, j int) bool {
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return subdomains[i] < subdomains[j]
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})
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fmt.Println("Subdomains found are: ", strings.Join(subdomains, ","))
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return 0
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}
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func zipExtractAll(zipBytes []byte) (contents [][]byte, err error) {
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r, err := zip.NewReader(bytes.NewReader(zipBytes), int64(len(zipBytes)))
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if err != nil {
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return nil, err
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}
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contents = make([][]byte, len(r.File))
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for i, zf := range r.File {
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f, err := zf.Open()
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if err != nil {
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return nil, err
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}
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defer f.Close()
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contents[i], err = ioutil.ReadAll(f)
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if err != nil {
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return nil, err
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}
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if err := f.Close(); err != nil {
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return nil, err
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}
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}
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return contents, nil
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}
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func extractInformation(content []byte) (subdomain string, err error) {
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lines := strings.Split(string(content), "\n")
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for _, line := range lines {
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if strings.HasPrefix(line, "remote ") {
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words := strings.Fields(line)
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if len(words) < 2 {
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return "", fmt.Errorf("not enough words on line %q", line)
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}
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host := words[1]
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return strings.TrimSuffix(host, ".prod.surfshark.com"), nil
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}
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}
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return "", fmt.Errorf("could not find remote line")
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}
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