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cmd/lncli: retrieve the macaroon for the current chain and network

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Co-Authored-By: Karl Ranna <karl@karlranna.com>
This commit is contained in:
Wilmer Paulino 2018-08-22 15:31:47 -04:00 committed by Olaoluwa Osuntokun
parent 56504d2685
commit 4ba6a59e75
1 changed files with 55 additions and 28 deletions
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79
cmd/lncli/main.go
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@ -25,6 +25,8 @@ import (
)
const (
defaultDataDir = "data"
defaultChainSubDir = "chain"
defaultTLSCertFilename = "tls.cert"
defaultMacaroonFilename = "admin.macaroon"
defaultRPCPort = "10009"
@ -32,13 +34,12 @@ const (
)
var (
//Commit stores the current commit hash of this build. This should be
//set using -ldflags during compilation.
// Commit stores the current commit hash of this build. This should be
// set using -ldflags during compilation.
Commit string
defaultLndDir = btcutil.AppDataDir("lnd", false)
defaultTLSCertPath = filepath.Join(defaultLndDir, defaultTLSCertFilename)
defaultMacaroonPath = filepath.Join(defaultLndDir, defaultMacaroonFilename)
)
func fatal(err error) {
@ -67,30 +68,11 @@ func getClient(ctx *cli.Context) (lnrpc.LightningClient, func()) {
}
func getClientConn(ctx *cli.Context, skipMacaroons bool) *grpc.ClientConn {
lndDir := cleanAndExpandPath(ctx.GlobalString("lnddir"))
if lndDir != defaultLndDir {
// If a custom lnd directory was set, we'll also check if custom
// paths for the TLS cert and macaroon file were set as well. If
// not, we'll override their paths so they can be found within
// the custom lnd directory set. This allows us to set a custom
// lnd directory, along with custom paths to the TLS cert and
// macaroon file.
tlsCertPath := cleanAndExpandPath(ctx.GlobalString("tlscertpath"))
if tlsCertPath == defaultTLSCertPath {
ctx.GlobalSet("tlscertpath",
filepath.Join(lndDir, defaultTLSCertFilename))
}
macPath := cleanAndExpandPath(ctx.GlobalString("macaroonpath"))
if macPath == defaultMacaroonPath {
ctx.GlobalSet("macaroonpath",
filepath.Join(lndDir, defaultMacaroonFilename))
}
}
// First, we'll parse the args from the command.
tlsCertPath, macPath := parseArgs(ctx)
// Load the specified TLS certificate and build transport credentials
// with it.
tlsCertPath := cleanAndExpandPath(ctx.GlobalString("tlscertpath"))
creds, err := credentials.NewClientTLSFromFile(tlsCertPath, "")
if err != nil {
fatal(err)
@ -105,7 +87,6 @@ func getClientConn(ctx *cli.Context, skipMacaroons bool) *grpc.ClientConn {
// if we're not skipping macaroon processing.
if !ctx.GlobalBool("no-macaroons") && !skipMacaroons {
// Load the specified macaroon file.
macPath := cleanAndExpandPath(ctx.GlobalString("macaroonpath"))
macBytes, err := ioutil.ReadFile(macPath)
if err != nil {
fatal(err)
@ -161,6 +142,53 @@ func getClientConn(ctx *cli.Context, skipMacaroons bool) *grpc.ClientConn {
return conn
}
// parseArgs parses the TLS certificate and macaroon paths from the command.
func parseArgs(ctx *cli.Context) (string, string) {
// We'll start off by parsing the active chain and network. These are
// needed to determine the correct path to the macaroon when not
// specified.
chain := strings.ToLower(ctx.GlobalString("chain"))
switch chain {
case "bitcoin", "litecoin":
default:
err := fmt.Errorf("unknown chain: %v", chain)
fatal(err)
}
network := strings.ToLower(ctx.GlobalString("network"))
switch network {
case "mainnet", "testnet", "regtest", "simnet":
default:
err := fmt.Errorf("unknown network: %v", network)
fatal(err)
}
var tlsCertPath, macPath string
lndDir := cleanAndExpandPath(ctx.GlobalString("lnddir"))
if lndDir != defaultLndDir {
// If a custom lnd directory was set, we'll also check if custom
// paths for the TLS cert and macaroon file were set as well. If
// not, we'll override their paths so they can be found within
// the custom lnd directory set. This allows us to set a custom
// lnd directory, along with custom paths to the TLS cert and
// macaroon file.
tlsCertPath = cleanAndExpandPath(ctx.GlobalString("tlscertpath"))
if tlsCertPath == defaultTLSCertPath {
tlsCertPath = filepath.Join(lndDir, defaultTLSCertFilename)
}
macPath = cleanAndExpandPath(ctx.GlobalString("macaroonpath"))
if macPath == "" {
macPath = filepath.Join(
lndDir, defaultDataDir, defaultChainSubDir,
chain, network, defaultMacaroonFilename,
)
}
}
return tlsCertPath, macPath
}
func main() {
app := cli.NewApp()
app.Name = "lncli"
@ -199,7 +227,6 @@ func main() {
},
cli.StringFlag{
Name: "macaroonpath",
Value: defaultMacaroonPath,
Usage: "path to macaroon file",
},
cli.Int64Flag{