111 lines
2.9 KiB
Go
111 lines
2.9 KiB
Go
package updater
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import (
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"context"
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"fmt"
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"sort"
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"strings"
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"github.com/qdm12/gluetun/internal/constants/vpn"
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"github.com/qdm12/gluetun/internal/models"
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"github.com/qdm12/gluetun/internal/provider/common"
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)
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func (u *Updater) FetchServers(ctx context.Context, minServers int) (
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servers []models.Server, err error,
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) {
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data, err := fetchAPI(ctx, u.client)
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if err != nil {
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return nil, fmt.Errorf("fetching API: %w", err)
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}
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hosts := make(map[string]struct{}, len(data.Servers))
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for _, serverData := range data.Servers {
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openVPNHost := serverData.Hostnames.OpenVPN
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if openVPNHost != "" {
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hosts[openVPNHost] = struct{}{}
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}
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wireguardHost := serverData.Hostnames.Wireguard
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if wireguardHost != "" {
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hosts[wireguardHost] = struct{}{}
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}
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}
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if len(hosts) < minServers {
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return nil, fmt.Errorf("%w: %d and expected at least %d",
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common.ErrNotEnoughServers, len(hosts), minServers)
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}
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hostsSlice := make(sort.StringSlice, 0, len(hosts))
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for host := range hosts {
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hostsSlice = append(hostsSlice, host)
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}
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hostsSlice.Sort() // for predictable unit tests
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resolveSettings := parallelResolverSettings(hostsSlice)
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hostToIPs, warnings, err := u.parallelResolver.Resolve(ctx, resolveSettings)
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for _, warning := range warnings {
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u.warner.Warn(warning)
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}
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if err != nil {
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return nil, err
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}
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if len(hostToIPs) < minServers {
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return nil, fmt.Errorf("%w: %d and expected at least %d",
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common.ErrNotEnoughServers, len(servers), minServers)
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}
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servers = make([]models.Server, 0, len(hostToIPs))
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for _, serverData := range data.Servers {
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city, region := parseCity(serverData.City)
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server := models.Server{
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Country: serverData.Country,
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City: city,
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Region: region,
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ISP: serverData.ISP,
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}
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openVPNHostname := serverData.Hostnames.OpenVPN
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wireguardHostname := serverData.Hostnames.Wireguard
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if openVPNHostname == "" && wireguardHostname == "" {
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warning := fmt.Sprintf("server data %v has no OpenVPN nor Wireguard hostname", serverData)
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warnings = append(warnings, warning)
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continue
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}
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if openVPNHostname != "" {
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openVPNServer := server
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openVPNServer.Hostname = openVPNHostname
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openVPNServer.VPN = vpn.OpenVPN
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openVPNServer.UDP = true
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openVPNServer.TCP = true
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openVPNServer.IPs = hostToIPs[openVPNHostname]
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servers = append(servers, openVPNServer)
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}
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if wireguardHostname != "" {
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wireguardServer := server
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wireguardServer.Hostname = wireguardHostname
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wireguardServer.VPN = vpn.Wireguard
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wireguardServer.IPs = hostToIPs[wireguardHostname]
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wireguardServer.WgPubKey = serverData.WgPubKey
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servers = append(servers, wireguardServer)
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}
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}
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sort.Sort(models.SortableServers(servers))
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return servers, nil
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}
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func parseCity(city string) (parsedCity, region string) {
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commaIndex := strings.Index(city, ", ")
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if commaIndex == -1 {
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return city, ""
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}
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return city[:commaIndex], city[commaIndex+2:]
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}
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