config: unify lbcd and lbcwallet RPC credentails

1. remove lbcdusername and lbcdpassword
2. rename (username, password) to (rpcuser, rpcpass)

Most users are confused with the lbcduser and username at first,
and choose to use the same credentials between lbcd and lbcwallet.

README.md

@@ -22,25 +22,12 @@ does mean they could track all transactions involving your addresses
 and therefore know your exact balance.  In a future release, public data
 encryption will extend to transactions as well.
 
-Wallet clients can use one of two RPC servers:
-
-  1. A legacy JSON-RPC server mostly compatible with Bitcoin Core
-
-     The JSON-RPC server exists to ease the migration of wallet applications
-     from Core, but complete compatibility is not guaranteed.  Some portions of
-     the API (and especially accounts) have to work differently due to other
-     design decisions (mostly due to BIP0044).  However, if you find a
-     compatibility issue and feel that it could be reasonably supported, please
-     report an issue.  This server is enabled by default.
-
-  2. An experimental gRPC server
-
-     The gRPC server uses a new API built for lbcwallet, but the API is not
-     stabilized and the server is feature gated behind a config option
-     (`--experimentalrpclisten`).  If you don't mind applications breaking due
-     to API changes, don't want to deal with issues of the legacy API, or need
-     notifications for changes to the wallet, this is the RPC server to use.
-     The gRPC server is documented [here](./rpc/documentation/README.md).
+The JSON-RPC server exists to ease the migration of wallet applications
+from Core, but complete compatibility is not guaranteed.  Some portions of
+the API (and especially accounts) have to work differently due to other
+design decisions (mostly due to BIP0044).  However, if you find a
+compatibility issue and feel that it could be reasonably supported, please
+report an issue.  This server is enabled by default.
 
 ## Security
 
@@ -93,25 +80,23 @@ Start a local instance of `lbcd` and have the `lbcwallet` connecting to it.
 
 ``` sh
 # Start a lbcd with its RPC credentials
-./lbcd --txindex --rpcuser=lbcduser --rpcpass=lbcdpass
+./lbcd --txindex --rpcuser=rpcuser --rpcpass=rpcpass
 
 # Start a lbcwallet with its RPC credentials along with the lbcd's RPC credentials
 # The default lbcd instance to conect to is already localhost:9245 so we don't need to specify it explicitly here.
-./lbcwallet --username=rpcuser --password=rpcpass --lbcdusername=lbcduser --lbcdpassword=lbcdpass # --rpcconnect=localhost:9245
+./lbcwallet --rpcuser=rpcuser --rpcpass=rpcpass # --rpcconnect=localhost:9245
 
 #
-#             rpcuser/rpcpass                lbcduser/lbcdpass
+#             rpcuser/rpcpass                rpcuser/rpcpass
 # lbcctl  <-------------------> lbcwallet <--------------------> lbcd
 #             RPC port 9244                   RPC port 9245
 #
 ```
 
-If the `lbcd` and `lbcwallet` use the same RPC credentials, we can skip the `--lbcdusername` and `--lbcdpassword`
-
 ``` sh
 ./lbcd --txindex --rpcuser=rpcuser --rpcpass=rpcpass
 
-./lbcwallet --username=rpcuser --password=rpcpass
+./lbcwallet --rpcuser=rpcuser --rpcpass=rpcpass
 
 #
 #             rpcuser/rpcpass                rpcuser/rpcpass

config.go

@@ -70,8 +70,6 @@ type config struct {
 	CAFile           *cfgutil.ExplicitString `long:"cafile" description:"File containing root certificates to authenticate a TLS connections with lbcd"`
 	DisableClientTLS bool                    `long:"noclienttls" description:"Disable TLS for the RPC client"`
 	SkipVerify       bool                    `long:"skipverify" description:"Skip verifying TLS for the RPC client"`
-	LbcdUsername     string                  `long:"lbcdusername" description:"Username for lbcd authentication"`
-	LbcdPassword     string                  `long:"lbcdpassword" default-mask:"-" description:"Password for lbcd authentication"`
 	Proxy            string                  `long:"proxy" description:"Connect via SOCKS5 proxy (eg. 127.0.0.1:9050)"`
 	ProxyUser        string                  `long:"proxyuser" description:"Username for proxy server"`
 	ProxyPass        string                  `long:"proxypass" default-mask:"-" description:"Password for proxy server"`
@@ -90,9 +88,9 @@ type config struct {
 	DisableServerTLS       bool                    `long:"noservertls" description:"Disable TLS for the RPC server"`
 	LegacyRPCListeners     []string                `long:"rpclisten" description:"Listen for legacy RPC connections on this interface/port (default port: 9244, testnet: 19244, regtest: 29244, simnet: 29244)"`
 	LegacyRPCMaxClients    int64                   `long:"rpcmaxclients" description:"Max number of legacy RPC clients for standard connections"`
-	LegacyRPCMaxWebsockets int64                   `long:"rpcmaxwebsockets" description:"Max number of legacy RPC websocket connections"`
-	Username               string                  `short:"u" long:"username" description:"Username for legacy RPC and lbcd authentication (if lbcdusername is unset)"`
-	Password               string                  `short:"P" long:"password" default-mask:"-" description:"Password for legacy RPC and lbcd authentication (if lbcdpassword is unset)"`
+	LegacyRPCMaxWebsockets int64                   `long:"rpcmaxwebsockets" description:"Max number of RPC websocket connections"`
+	RPCUser                string                  `short:"u" long:"rpcuser" description:"Username for RPC and lbcd authentication"`
+	RPCPass                string                  `short:"P" long:"rpcpass" default-mask:"-" description:"Password for RPC and lbcd authentication"`
 
 	// Deprecated options
 	DataDir *cfgutil.ExplicitString `short:"b" long:"datadir" default-mask:"-" description:"DEPRECATED -- use appdata instead"`
@@ -601,17 +599,6 @@ func loadConfig() (*config, []string, error) {
 	cfg.RPCCert.Value = cleanAndExpandPath(cfg.RPCCert.Value)
 	cfg.RPCKey.Value = cleanAndExpandPath(cfg.RPCKey.Value)
 
-	// If the lbcd username or password are unset, use the same auth as for
-	// the client.  The two settings were previously shared for lbcd and
-	// client auth, so this avoids breaking backwards compatibility while
-	// allowing users to use different auth settings for lbcd and wallet.
-	if cfg.LbcdUsername == "" {
-		cfg.LbcdUsername = cfg.Username
-	}
-	if cfg.LbcdPassword == "" {
-		cfg.LbcdPassword = cfg.Password
-	}
-
 	// Warn about missing config file after the final command line parse
 	// succeeds.  This prevents the warning on help messages and invalid
 	// options.

lbcwallet.go

@@ -214,7 +214,7 @@ func readCAFile() []byte {
 func startChainRPC(certs []byte) (*chain.RPCClient, error) {
 	log.Infof("Attempting RPC client connection to %v", cfg.RPCConnect)
 	rpcc, err := chain.NewRPCClient(activeNet.Params, cfg.RPCConnect,
-		cfg.LbcdUsername, cfg.LbcdPassword, certs, cfg.DisableClientTLS,
+		cfg.RPCPass, cfg.RPCPass, certs, cfg.DisableClientTLS,
 		cfg.SkipVerify, 0)
 	if err != nil {
 		return nil, err

rpcserver.go

@@ -126,17 +126,17 @@ func startRPCServers(walletLoader *wallet.Loader) (*legacyrpc.Server, error) {
 
 	}
 
-	if cfg.Username == "" || cfg.Password == "" {
-		log.Info("Legacy RPC server disabled (requires username and password)")
+	if cfg.RPCUser == "" || cfg.RPCPass == "" {
+		log.Info("RPC server disabled (requires rpcuser and rpcpass)")
 	} else if len(cfg.LegacyRPCListeners) != 0 {
 		listeners := makeListeners(cfg.LegacyRPCListeners, legacyListen)
 		if len(listeners) == 0 {
 			err := errors.New("failed to create listeners for legacy RPC server")
 			return nil, err
 		}
 		opts := legacyrpc.Options{
-			Username:            cfg.Username,
-			Password:            cfg.Password,
+			Username:            cfg.RPCUser,
+			Password:            cfg.RPCPass,
 			MaxPOSTClients:      cfg.LegacyRPCMaxClients,
 			MaxWebsocketClients: cfg.LegacyRPCMaxWebsockets,
 		}

sample-lbcwallet.conf

@@ -88,15 +88,8 @@
 
 ; Username and password to authenticate to lbcd a RPC server and authenticate
 ; new client connections
-; username=
-; password=
-
-; Alternative username and password for lbcd.  If set, these will be used
-; instead of the username and password set above for authentication to a
-; lbcd RPC server.
-; lbcdusername=
-; lbcdpassword=
-
+; rpcuser=
+; rpcpass=
 
 ; ------------------------------------------------------------------------------
 ; Debug