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