Files
gluetun/internal/updater/windscribe.go
2021-02-26 00:42:55 +00:00

101 lines
2.5 KiB
Go

package updater
import (
"context"
"encoding/json"
"fmt"
"net"
"net/http"
"sort"
"time"
"github.com/qdm12/gluetun/internal/models"
)
func (u *updater) updateWindscribe(ctx context.Context) (err error) {
servers, err := findWindscribeServers(ctx, u.client)
if err != nil {
return fmt.Errorf("cannot update Windscribe servers: %w", err)
}
if u.options.Stdout {
u.println(stringifyWindscribeServers(servers))
}
u.servers.Windscribe.Timestamp = u.timeNow().Unix()
u.servers.Windscribe.Servers = servers
return nil
}
func findWindscribeServers(ctx context.Context, client *http.Client) (servers []models.WindscribeServer, err error) {
const baseURL = "https://assets.windscribe.com/serverlist/mob-v2/1/"
cacheBreaker := time.Now().Unix()
url := fmt.Sprintf("%s%d", baseURL, cacheBreaker)
request, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil)
if err != nil {
return nil, err
}
response, err := client.Do(request)
if err != nil {
return nil, err
}
defer response.Body.Close()
if response.StatusCode != http.StatusOK {
return nil, fmt.Errorf("%w: %s", ErrHTTPStatusCodeNotOK, response.Status)
}
decoder := json.NewDecoder(response.Body)
var jsonData struct {
Data []struct {
Region string `json:"name"`
Groups []struct {
City string `json:"city"`
Nodes []struct {
Hostname string `json:"hostname"`
OpenvpnIP net.IP `json:"ip2"`
} `json:"nodes"`
} `json:"groups"`
} `json:"data"`
}
if err := decoder.Decode(&jsonData); err != nil {
return nil, fmt.Errorf("%w: %s", ErrUnmarshalResponseBody, err)
}
if err := response.Body.Close(); err != nil {
return nil, err
}
for _, regionBlock := range jsonData.Data {
region := regionBlock.Region
for _, group := range regionBlock.Groups {
city := group.City
for _, node := range group.Nodes {
server := models.WindscribeServer{
Region: region,
City: city,
Hostname: node.Hostname,
IP: node.OpenvpnIP,
}
servers = append(servers, server)
}
}
}
sort.Slice(servers, func(i, j int) bool {
return servers[i].Region+servers[i].City+servers[i].Hostname <
servers[j].Region+servers[j].City+servers[j].Hostname
})
return servers, nil
}
func stringifyWindscribeServers(servers []models.WindscribeServer) (s string) {
s = "func WindscribeServers() []models.WindscribeServer {\n"
s += " return []models.WindscribeServer{\n"
for _, server := range servers {
s += " " + server.String() + ",\n"
}
s += " }\n"
s += "}"
return s
}