113 lines
2.9 KiB
Go
113 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/models"
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"github.com/qdm12/gluetun/internal/provider/common"
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"github.com/qdm12/gluetun/internal/updater/openvpn"
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"golang.org/x/text/cases"
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"golang.org/x/text/language"
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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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const tcpURL = "https://torguard.net/downloads/OpenVPN-TCP-Linux.zip"
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tcpContents, err := u.unzipper.FetchAndExtract(ctx, tcpURL)
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if err != nil {
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return nil, err
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}
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const udpURL = "https://torguard.net/downloads/OpenVPN-UDP-Linux.zip"
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udpContents, err := u.unzipper.FetchAndExtract(ctx, udpURL)
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if err != nil {
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return nil, err
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}
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hts := make(hostToServer)
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titleCaser := cases.Title(language.English)
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for fileName, content := range tcpContents {
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const tcp, udp = true, false
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warnings := addServerFromOvpn(fileName, content, hts, tcp, udp, titleCaser)
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u.warnWarnings(warnings)
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}
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for fileName, content := range udpContents {
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const tcp, udp = false, true
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warnings := addServerFromOvpn(fileName, content, hts, tcp, udp, titleCaser)
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u.warnWarnings(warnings)
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}
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if len(hts) < minServers {
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return nil, fmt.Errorf("%w: %d and expected at least %d",
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common.ErrNotEnoughServers, len(hts), minServers)
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}
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hosts := hts.toHostsSlice()
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resolveSettings := parallelResolverSettings(hosts)
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hostToIPs, warnings, err := u.parallelResolver.Resolve(ctx, resolveSettings)
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u.warnWarnings(warnings)
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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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hts.adaptWithIPs(hostToIPs)
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servers = hts.toServersSlice()
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if len(servers) < 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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sort.Sort(models.SortableServers(servers))
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return servers, nil
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}
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func addServerFromOvpn(fileName string, content []byte,
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hts hostToServer, tcp, udp bool, titleCaser cases.Caser) (warnings []string) {
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if !strings.HasSuffix(fileName, ".ovpn") {
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return nil // not an OpenVPN file
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}
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country, city := parseFilename(fileName, titleCaser)
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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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return warnings
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}
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ips, err := openvpn.ExtractIPs(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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return warnings
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}
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hts.add(host, country, city, tcp, udp, ips)
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return warnings
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}
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func (u *Updater) warnWarnings(warnings []string) {
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for _, warning := range warnings {
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u.warner.Warn(warning)
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}
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}
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