Make the auth stuff simpler - just have a password

README.md

@@ -22,6 +22,7 @@ LedisDB now supports multiple different databases as backends.
 + Replication to guarantee data safety.
 + Supplies tools to load, dump, and repair database. 
 + Supports cluster, use [xcodis](https://github.com/siddontang/xcodis)
++ Authentication (though, not via http)
 
 ## Build and Install
 

config/config.go

@@ -91,7 +91,6 @@ type SnapshotConfig struct {
 type Config struct {
 	m sync.RWMutex `toml:"-"`
 
-	AuthEnabled  bool   `toml:"auth_enabled"`
 	AuthPassword string `toml:"auth_password"`
 
 	FileName string `toml:"-"`
@@ -171,8 +170,7 @@ func NewConfigDefault() *Config {
 	cfg.SlaveOf = ""
 	cfg.Readonly = false
 
-	// Disable Auth by default
-	cfg.AuthEnabled = false
+	// Disable Auth by default, by setting password to blank
 	cfg.AuthPassword = ""
 
 	// default databases number

etc/ledis.conf

@@ -25,6 +25,9 @@ slaveof = ""
 # for readonly mode, only replication and flushall can write
 readonly = false
 
+# Authentication (for non-http connections). Connect, then use the AUTH command to authenticate.
+# auth_password = "russellwashere"
+
 # Choose which backend storage to use, now support:
 #
 #   leveldb

server/app_test.go

@@ -37,11 +37,7 @@ func startTestAppAuth(password string) {
 
 		cfg.Addr = "127.0.0.1:20000"
 		cfg.HttpAddr = "127.0.0.1:20001"
-
-		if password != "" {
-			cfg.AuthPassword = password
-			cfg.AuthEnabled = true
-		}
+		cfg.AuthPassword = password
 
 		os.RemoveAll(cfg.DataDir)
 

server/client.go

@@ -88,7 +88,7 @@ func newClient(app *App) *client {
 
 	c.app = app
 	c.ldb = app.ldb
-	c.is_authed = false || !app.cfg.AuthEnabled
+	c.is_authed = false || c.authEnabled()
 	c.db, _ = app.ldb.Select(0) //use default db
 
 	return c
@@ -98,6 +98,10 @@ func (c *client) close() {
 
 }
 
+func (c *client) authEnabled() bool {
+	return len(c.app.cfg.AuthPassword) > 0
+}
+
 func (c *client) perform() {
 	var err error
 
@@ -107,7 +111,7 @@ func (c *client) perform() {
 		err = ErrEmptyCommand
 	} else if exeCmd, ok := regCmds[c.cmd]; !ok {
 		err = ErrNotFound
-	} else if c.app.cfg.AuthEnabled && !c.is_authed && c.cmd != "auth" {
+	} else if c.authEnabled() && !c.is_authed && c.cmd != "auth" {
 		err = ErrNotAuthenticated
 	} else {
 		// if c.db.IsTransaction() {