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api.go
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api.go
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package updater
import (
"context"
"encoding/json"
"errors"
"fmt"
"net/http"
"github.com/qdm12/gluetun/internal/provider/surfshark/servers"
)
func addServersFromAPI(ctx context.Context, client *http.Client,
hts hostToServers) (err error) {
data, err := fetchAPI(ctx, client)
if err != nil {
return err
}
locationData := servers.LocationData()
hostToLocation := hostToLocation(locationData)
for _, serverData := range data {
locationData := hostToLocation[serverData.Host] // TODO remove in v4
retroLoc := locationData.RetroLoc // empty string if the host has no retro-compatible region
tcp, udp := true, true // OpenVPN servers from API supports both TCP and UDP
hts.addOpenVPN(serverData.Host, serverData.Region, serverData.Country,
serverData.Location, retroLoc, tcp, udp)
if serverData.PubKey != "" {
hts.addWireguard(serverData.Host, serverData.Region, serverData.Country,
serverData.Location, retroLoc, serverData.PubKey)
}
}
return nil
}
var (
ErrHTTPStatusCodeNotOK = errors.New("HTTP status code not OK")
)
type serverData struct {
Host string `json:"connectionName"`
Region string `json:"region"`
Country string `json:"country"`
Location string `json:"location"`
PubKey string `json:"pubKey"`
}
func fetchAPI(ctx context.Context, client *http.Client) (
servers []serverData, err error) {
const url = "https://api.surfshark.com/v4/server/clusters"
for _, clustersType := range [...]string{"generic", "double", "static", "obfuscated"} {
request, err := http.NewRequestWithContext(ctx, http.MethodGet, url+"/"+clustersType, 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: %d %s", ErrHTTPStatusCodeNotOK,
response.StatusCode, response.Status)
}
decoder := json.NewDecoder(response.Body)
var newServers []serverData
err = decoder.Decode(&newServers)
if err != nil {
return nil, fmt.Errorf("decoding response body: %w", err)
}
err = response.Body.Close()
if err != nil {
return nil, err
}
servers = append(servers, newServers...)
}
return servers, nil
}