Files
gluetun/internal/updater/providers/purevpn/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

99 lines
2.5 KiB
Go

// Package purevpn contains code to obtain the server information
// for the PureVPN provider.
package purevpn
import (
"context"
"errors"
"fmt"
"net/http"
"strings"
"github.com/qdm12/gluetun/internal/models"
"github.com/qdm12/gluetun/internal/publicip"
"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, client *http.Client,
unzipper unzip.Unzipper, presolver resolver.Parallel, minServers int) (
servers []models.PurevpnServer, warnings []string, err error) {
const url = "https://s3-us-west-1.amazonaws.com/heartbleed/windows/New+OVPN+Files.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)
}
hts := make(hostToServer)
for fileName, content := range contents {
if !strings.HasSuffix(fileName, ".ovpn") {
continue
}
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)
}
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()
if len(servers) < minServers {
return nil, warnings, fmt.Errorf("%w: %d and expected at least %d",
ErrNotEnoughServers, len(servers), minServers)
}
// Dedup by location
lts := make(locationToServer)
for _, server := range servers {
country, region, city, err := publicip.Info(ctx, client, server.IPs[0])
if err != nil {
return nil, warnings, err
}
// TODO split servers by host
lts.add(country, region, city, server.IPs)
}
if len(servers) < minServers {
return nil, warnings, fmt.Errorf("%w: %d and expected at least %d",
ErrNotEnoughServers, len(servers), minServers)
}
servers = lts.toServersSlice()
sortServers(servers)
return servers, warnings, nil
}