package loopd import ( "fmt" "os" "path/filepath" "github.com/btcsuite/btcutil" "github.com/lightninglabs/loop/lsat" "github.com/lightningnetwork/lnd/lncfg" ) var ( loopDirBase = btcutil.AppDataDir("loop", false) defaultLogLevel = "info" defaultLogDirname = "logs" defaultLogFilename = "loopd.log" defaultLogDir = filepath.Join(loopDirBase, defaultLogDirname) defaultConfigFile = filepath.Join(loopDirBase, defaultConfigFilename) defaultMaxLogFiles = 3 defaultMaxLogFileSize = 10 defaultLoopOutMaxParts = uint32(5) ) type lndConfig struct { Host string `long:"host" description:"lnd instance rpc address"` MacaroonDir string `long:"macaroondir" description:"Path to the directory containing all the required lnd macaroons"` TLSPath string `long:"tlspath" description:"Path to lnd tls certificate"` } type loopServerConfig struct { Host string `long:"host" description:"Loop server address host:port"` Proxy string `long:"proxy" description:"The host:port of a SOCKS proxy through which all connections to the loop server will be established over"` NoTLS bool `long:"notls" description:"Disable tls for communication to the loop server [testing only]"` TLSPath string `long:"tlspath" description:"Path to loop server tls certificate [testing only]"` } type viewParameters struct{} type Config struct { ShowVersion bool `long:"version" description:"Display version information and exit"` Network string `long:"network" description:"network to run on" choice:"regtest" choice:"testnet" choice:"mainnet" choice:"simnet"` RPCListen string `long:"rpclisten" description:"Address to listen on for gRPC clients"` RESTListen string `long:"restlisten" description:"Address to listen on for REST clients"` CORSOrigin string `long:"corsorigin" description:"The value to send in the Access-Control-Allow-Origin header. Header will be omitted if empty."` LoopDir string `long:"loopdir" description:"The directory for all of loop's data."` ConfigFile string `long:"configfile" description:"Path to configuration file."` DataDir string `long:"datadir" description:"Directory for loopdb."` LogDir string `long:"logdir" description:"Directory to log output."` MaxLogFiles int `long:"maxlogfiles" description:"Maximum logfiles to keep (0 for no rotation)"` MaxLogFileSize int `long:"maxlogfilesize" description:"Maximum logfile size in MB"` DebugLevel string `long:"debuglevel" description:"Logging level for all subsystems {trace, debug, info, warn, error, critical} -- You may also specify =,=,... to set the log level for individual subsystems -- Use show to list available subsystems"` MaxLSATCost uint32 `long:"maxlsatcost" description:"Maximum cost in satoshis that loopd is going to pay for an LSAT token automatically. Does not include routing fees."` MaxLSATFee uint32 `long:"maxlsatfee" description:"Maximum routing fee in satoshis that we are willing to pay while paying for an LSAT token."` LoopOutMaxParts uint32 `long:"loopoutmaxparts" description:"The maximum number of payment parts that may be used for a loop out swap."` Lnd *lndConfig `group:"lnd" namespace:"lnd"` Server *loopServerConfig `group:"server" namespace:"server"` View viewParameters `command:"view" alias:"v" description:"View all swaps in the database. This command can only be executed when loopd is not running."` } const ( mainnetServer = "swap.lightning.today:11010" testnetServer = "test.swap.lightning.today:11010" ) // DefaultConfig returns all default values for the Config struct. func DefaultConfig() Config { return Config{ Network: "mainnet", RPCListen: "localhost:11010", RESTListen: "localhost:8081", Server: &loopServerConfig{ NoTLS: false, }, LoopDir: loopDirBase, ConfigFile: defaultConfigFile, DataDir: loopDirBase, LogDir: defaultLogDir, MaxLogFiles: defaultMaxLogFiles, MaxLogFileSize: defaultMaxLogFileSize, DebugLevel: defaultLogLevel, MaxLSATCost: lsat.DefaultMaxCostSats, MaxLSATFee: lsat.DefaultMaxRoutingFeeSats, LoopOutMaxParts: defaultLoopOutMaxParts, Lnd: &lndConfig{ Host: "localhost:10009", }, } } // Validate cleans up paths in the config provided and validates it. func Validate(cfg *Config) error { // Cleanup any paths before we use them. cfg.LoopDir = lncfg.CleanAndExpandPath(cfg.LoopDir) cfg.DataDir = lncfg.CleanAndExpandPath(cfg.DataDir) cfg.LogDir = lncfg.CleanAndExpandPath(cfg.LogDir) // Since our loop directory overrides our log/data dir values, make sure // that they are not set when loop dir is set. We hard here rather than // overwriting and potentially confusing the user. logDirSet := cfg.LogDir != defaultLogDir dataDirSet := cfg.DataDir != loopDirBase loopDirSet := cfg.LoopDir != loopDirBase if loopDirSet { if logDirSet { return fmt.Errorf("loopdir overwrites logdir, please " + "only set one value") } if dataDirSet { return fmt.Errorf("loopdir overwrites datadir, please " + "only set one value") } // Once we are satisfied that neither config value was set, we // replace them with our loop dir. cfg.DataDir = cfg.LoopDir cfg.LogDir = filepath.Join(cfg.LoopDir, defaultLogDirname) } // Append the network type to the data and log directory so they are // "namespaced" per network. cfg.DataDir = filepath.Join(cfg.DataDir, cfg.Network) cfg.LogDir = filepath.Join(cfg.LogDir, cfg.Network) // If either of these directories do not exist, create them. if err := os.MkdirAll(cfg.DataDir, os.ModePerm); err != nil { return err } if err := os.MkdirAll(cfg.LogDir, os.ModePerm); err != nil { return err } return nil }