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juanfont.headscale/cmd/headscale/cli/utils.go

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package cli
import (
"io"
"log"
"os"
"path/filepath"
"strings"
"github.com/juanfont/headscale"
"github.com/spf13/viper"
"gopkg.in/yaml.v2"
"tailscale.com/tailcfg"
)
func absPath(path string) string {
// If a relative path is provided, prefix it with the the directory where
// the config file was found.
if (path != "") && !strings.HasPrefix(path, "/") {
dir, _ := filepath.Split(viper.ConfigFileUsed())
if dir != "" {
path = dir + "/" + path
}
}
return path
}
func getHeadscaleApp() (*headscale.Headscale, error) {
derpMap, err := loadDerpMap(absPath(viper.GetString("derp_map_path")))
if err != nil {
log.Printf("Could not load DERP servers map file: %s", err)
}
cfg := headscale.Config{
ServerURL: viper.GetString("server_url"),
Addr: viper.GetString("listen_addr"),
PrivateKeyPath: absPath(viper.GetString("private_key_path")),
DerpMap: derpMap,
DBhost: viper.GetString("db_host"),
DBport: viper.GetInt("db_port"),
DBname: viper.GetString("db_name"),
DBuser: viper.GetString("db_user"),
DBpass: viper.GetString("db_pass"),
TLSLetsEncryptHostname: viper.GetString("tls_letsencrypt_hostname"),
TLSLetsEncryptCacheDir: absPath(viper.GetString("tls_letsencrypt_cache_dir")),
TLSLetsEncryptChallengeType: viper.GetString("tls_letsencrypt_challenge_type"),
TLSCertPath: absPath(viper.GetString("tls_cert_path")),
TLSKeyPath: absPath(viper.GetString("tls_key_path")),
}
h, err := headscale.NewHeadscale(cfg)
if err != nil {
return nil, err
}
return h, nil
}
func loadDerpMap(path string) (*tailcfg.DERPMap, error) {
derpFile, err := os.Open(path)
if err != nil {
return nil, err
}
defer derpFile.Close()
var derpMap tailcfg.DERPMap
b, err := io.ReadAll(derpFile)
if err != nil {
return nil, err
}
err = yaml.Unmarshal(b, &derpMap)
return &derpMap, err
}