Files
gluetun/internal/updater/providers/privatevpn/servers.go
Quentin McGaw e8e7b83297 Maintenance: refactor servers updater code
- Require at least 80% of number of servers now to pass
- Each provider is in its own package with a common structure
- Unzip package with unzipper interface
- Openvpn package with extraction and download functions
2021-05-08 00:59:42 +00:00

87 lines
2.2 KiB
Go

// Package privatevpn contains code to obtain the server information
// for the PrivateVPN provider.
package privatevpn
import (
"context"
"errors"
"fmt"
"strings"
"github.com/qdm12/gluetun/internal/constants"
"github.com/qdm12/gluetun/internal/models"
"github.com/qdm12/gluetun/internal/updater/openvpn"
"github.com/qdm12/gluetun/internal/updater/resolver"
"github.com/qdm12/gluetun/internal/updater/unzip"
)
var ErrNotEnoughServers = errors.New("not enough servers found")
func GetServers(ctx context.Context, unzipper unzip.Unzipper,
presolver resolver.Parallel, minServers int) (
servers []models.PrivatevpnServer, warnings []string, err error) {
const url = "https://privatevpn.com/client/PrivateVPN-TUN.zip"
contents, err := unzipper.FetchAndExtract(ctx, url)
if err != nil {
return nil, nil, err
} else if len(contents) < minServers {
return nil, nil, fmt.Errorf("%w: %d and expected at least %d",
ErrNotEnoughServers, len(contents), minServers)
}
countryCodes := constants.CountryCodes()
hts := make(hostToServer)
for fileName, content := range contents {
if !strings.HasSuffix(fileName, ".ovpn") {
continue // not an OpenVPN file
}
countryCode, city, err := parseFilename(fileName)
if err != nil {
warnings = append(warnings, err.Error())
continue
}
country, warning := codeToCountry(countryCode, countryCodes)
if warning != "" {
warnings = append(warnings, warning)
}
host, warning, err := openvpn.ExtractHost(content)
if warning != "" {
warnings = append(warnings, warning)
}
if err != nil {
// treat error as warning and go to next file
warning := err.Error() + " in " + fileName
warnings = append(warnings, warning)
continue
}
hts.add(host, country, city)
}
if len(hts) < minServers {
return nil, warnings, fmt.Errorf("%w: %d and expected at least %d",
ErrNotEnoughServers, len(hts), minServers)
}
hosts := hts.toHostsSlice()
hostToIPs, newWarnings, err := resolveHosts(ctx, presolver, hosts, minServers)
warnings = append(warnings, newWarnings...)
if err != nil {
return nil, warnings, err
}
hts.adaptWithIPs(hostToIPs)
servers = hts.toServersSlice()
sortServers(servers)
return servers, warnings, nil
}