110 lines
3.4 KiB
Go
110 lines
3.4 KiB
Go
package custom
|
|
|
|
import (
|
|
"errors"
|
|
"fmt"
|
|
"strconv"
|
|
"strings"
|
|
|
|
"github.com/qdm12/gluetun/internal/configuration"
|
|
"github.com/qdm12/gluetun/internal/constants"
|
|
"github.com/qdm12/gluetun/internal/models"
|
|
"github.com/qdm12/gluetun/internal/provider/utils"
|
|
)
|
|
|
|
var ErrExtractData = errors.New("failed extracting information from custom configuration file")
|
|
|
|
func (p *Provider) BuildConf(connection models.Connection,
|
|
settings configuration.OpenVPN) (lines []string, err error) {
|
|
lines, _, err = p.extractor.Data(settings.ConfFile)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("%w: %s", ErrExtractData, err)
|
|
}
|
|
|
|
lines = modifyConfig(lines, connection, settings)
|
|
|
|
return lines, nil
|
|
}
|
|
|
|
func modifyConfig(lines []string, connection models.Connection,
|
|
settings configuration.OpenVPN) (modified []string) {
|
|
// Remove some lines
|
|
for _, line := range lines {
|
|
switch {
|
|
case
|
|
// Remove empty lines
|
|
line == "",
|
|
// Remove future to be duplicates
|
|
line == "mute-replay-warnings",
|
|
line == "auth-nocache",
|
|
line == "pull-filter ignore \"auth-token\"",
|
|
line == "auth-retry nointeract",
|
|
line == "suppress-timestamps",
|
|
line == "persist-tun",
|
|
line == "persist-key",
|
|
// Remove values always modified
|
|
strings.HasPrefix(line, "verb "),
|
|
strings.HasPrefix(line, "auth-user-pass "),
|
|
strings.HasPrefix(line, "user "),
|
|
strings.HasPrefix(line, "proto "),
|
|
strings.HasPrefix(line, "remote "),
|
|
strings.HasPrefix(line, "dev "),
|
|
// Remove values eventually modified
|
|
settings.Cipher != "" && hasPrefixOneOf(line,
|
|
"cipher ", "data-ciphers ", "data-ciphers-fallback "),
|
|
settings.Auth != "" && strings.HasPrefix(line, "auth "),
|
|
settings.MSSFix > 0 && strings.HasPrefix(line, "mssfix "),
|
|
!settings.IPv6 && hasPrefixOneOf(line, "tun-ipv6",
|
|
`pull-filter ignore "route-ipv6"`,
|
|
`pull-filter ignore "ifconfig-ipv6"`):
|
|
default:
|
|
modified = append(modified, line)
|
|
}
|
|
}
|
|
|
|
// Add values
|
|
modified = append(modified, connection.OpenVPNProtoLine())
|
|
modified = append(modified, connection.OpenVPNRemoteLine())
|
|
modified = append(modified, "dev "+settings.Interface)
|
|
modified = append(modified, "mute-replay-warnings")
|
|
modified = append(modified, "auth-nocache")
|
|
modified = append(modified, "pull-filter ignore \"auth-token\"") // prevent auth failed loop
|
|
modified = append(modified, "auth-retry nointeract")
|
|
modified = append(modified, "suppress-timestamps")
|
|
if settings.User != "" {
|
|
modified = append(modified, "auth-user-pass "+constants.OpenVPNAuthConf)
|
|
}
|
|
modified = append(modified, "verb "+strconv.Itoa(settings.Verbosity))
|
|
if settings.Cipher != "" {
|
|
modified = append(modified, utils.CipherLines(settings.Cipher, settings.Version)...)
|
|
}
|
|
if settings.Auth != "" {
|
|
modified = append(modified, "auth "+settings.Auth)
|
|
}
|
|
if settings.MSSFix > 0 {
|
|
modified = append(modified, "mssfix "+strconv.Itoa(int(settings.MSSFix)))
|
|
}
|
|
if !settings.IPv6 {
|
|
modified = append(modified, `pull-filter ignore "route-ipv6"`)
|
|
modified = append(modified, `pull-filter ignore "ifconfig-ipv6"`)
|
|
}
|
|
if !settings.Root {
|
|
modified = append(modified, "user "+settings.ProcUser)
|
|
modified = append(modified, "persist-tun")
|
|
modified = append(modified, "persist-key")
|
|
}
|
|
|
|
modified = append(modified, "") // trailing line
|
|
|
|
return modified
|
|
}
|
|
|
|
func hasPrefixOneOf(s string, prefixes ...string) bool {
|
|
for _, prefix := range prefixes {
|
|
if strings.HasPrefix(s, prefix) {
|
|
return true
|
|
}
|
|
}
|
|
return false
|
|
}
|