200 lines
4.4 KiB
Go
200 lines
4.4 KiB
Go
package main
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import (
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"fmt"
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"github.com/jessevdk/go-flags"
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"github.com/michael1011/lightningtip/backends"
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"github.com/op/go-logging"
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"os"
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"os/user"
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"path"
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"runtime"
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"strings"
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)
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const (
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defaultConfigFile = "lightningTip.conf"
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defaultDataDir = "LightningTip"
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defaultLogFile = "lightningTip.log"
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defaultLogLevel = "info"
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defaultRESTHost = "0.0.0.0:8081"
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defaultTLSCertFile = ""
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defaultTLSKeyFile = ""
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defaultAccessDomain = ""
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defaultTipExpiry = 3600
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defaultLndGRPCHost = "localhost:10009"
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defaultLndCertFile = "tls.cert"
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defaultMacaroonFile = "admin.macaroon"
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)
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type config struct {
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ConfigFile string `long:"config" Description:"Location of the config file"`
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DataDir string `long:"datadir" Description:"Location of the data stored by LightningTip"`
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LogFile string `long:"logfile" Description:"Location of the log file"`
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LogLevel string `long:"loglevel" Description:"Log level: debug, info, warning, error"`
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RESTHost string `long:"resthost" Description:"Host for the REST interface of LightningTip"`
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TLSCertFile string `long:"tlscertfile" Description:"Certificate for using LightningTip via HTTPS"`
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TLSKeyFile string `long:"tlskeyfile" Description:"Certificate for using LightningTip via HTTPS"`
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AccessDomain string `long:"accessdomain" Description:"The domain you are using LightningTip from"`
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TipExpiry int64 `long:"tipexpiry" Description:"Invoice expiry time in seconds"`
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LND *backends.LND `group:"LND" namespace:"lnd"`
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}
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var cfg config
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var backend backends.Backend
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func initConfig() {
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cfg = config{
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ConfigFile: path.Join(getDefaultDataDir(), defaultConfigFile),
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DataDir: getDefaultDataDir(),
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LogFile: path.Join(getDefaultDataDir(), defaultLogFile),
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LogLevel: defaultLogLevel,
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RESTHost: defaultRESTHost,
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TLSCertFile: defaultTLSCertFile,
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TLSKeyFile: defaultTLSKeyFile,
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AccessDomain: defaultAccessDomain,
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TipExpiry: defaultTipExpiry,
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LND: &backends.LND{
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GRPCHost: defaultLndGRPCHost,
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CertFile: path.Join(getDefaultLndDir(), defaultLndCertFile),
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MacaroonFile: path.Join(getDefaultLndDir(), defaultMacaroonFile),
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},
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}
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// Ignore unknown flags the first time parsing command line flags to prevent showing the unknown flag error twice
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flags.NewParser(&cfg, flags.IgnoreUnknown).Parse()
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errFile := flags.IniParse(cfg.ConfigFile, &cfg)
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// Parse flags again to override config file
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_, err := flags.Parse(&cfg)
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// Default log level if parsing fails
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logLevel := logging.DEBUG
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switch strings.ToLower(cfg.LogLevel) {
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case "info":
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logLevel = logging.INFO
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case "warning":
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logLevel = logging.WARNING
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case "error":
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logLevel = logging.ERROR
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}
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// Create data directory
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var errDataDir error
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var dataDirCreated bool
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if _, err := os.Stat(getDefaultDataDir()); os.IsNotExist(err) {
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errDataDir = os.Mkdir(getDefaultDataDir(), 0700)
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dataDirCreated = true
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}
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errLogFile := initLogger(cfg.LogFile, logLevel)
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// Show error messages
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if err != nil {
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log.Error("Failed to parse command line flags")
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}
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if errDataDir != nil {
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log.Error("Could not create data directory")
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log.Debug("Data directory path: " + getDefaultDataDir())
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} else if dataDirCreated {
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log.Debug("Created data directory: " + getDefaultDataDir())
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}
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if errFile != nil {
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log.Warning("Failed to parse config file: " + fmt.Sprint(errFile))
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} else {
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log.Debug("Parsed config file: " + cfg.ConfigFile)
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}
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if errLogFile != nil {
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log.Error("Failed to initialize log file: " + fmt.Sprint(err))
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} else {
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log.Debug("Initialized log file: " + cfg.LogFile)
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}
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// TODO: add more backend options like for example c-lighting and eclair
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backend = cfg.LND
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}
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func getDefaultDataDir() (dir string) {
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homeDir := getHomeDir()
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switch runtime.GOOS {
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case "windows":
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fallthrough
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case "darwin":
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dir = path.Join(homeDir, defaultDataDir)
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default:
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dir = path.Join(homeDir, "."+strings.ToLower(defaultDataDir))
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}
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return dir
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}
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func getDefaultLndDir() (dir string) {
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homeDir := getHomeDir()
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switch runtime.GOOS {
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case "darwin":
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fallthrough
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case "windows":
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dir = path.Join(homeDir, "Lnd")
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default:
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dir = path.Join(homeDir, ".lnd")
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}
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return dir
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}
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func getHomeDir() (dir string) {
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usr, err := user.Current()
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if err == nil {
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switch runtime.GOOS {
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case "darwin":
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dir = path.Join(usr.HomeDir, "Library/Application Support")
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case "windows":
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dir = path.Join(usr.HomeDir, "AppData/Local")
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default:
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dir = usr.HomeDir
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}
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}
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return dir
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}
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