Add support for AUTH commands

auth.go

@@ -0,0 +1,47 @@
+package goSam
+
+import "fmt"
+
+// SetupAuth sends the AUTH ENABLE command and immediately sets up a new Username and
+// Password from the arguments
+func (c *Client) SetupAuth(user, password string) error {
+	r, err := c.sendCmd("AUTH ENABLE\n")
+	if err != nil {
+		return err
+	}
+	if r.Topic != "AUTH" {
+		return fmt.Errorf("SetupAuth Unknown Reply: %+v\n", r)
+	}
+	r, err = c.sendCmd("AUTH %s %s\n", user, password)
+	if err != nil {
+		return err
+	}
+	if r.Topic != "AUTH" {
+		return fmt.Errorf("SetupAuth Unknown Reply: %+v\n", r)
+	}
+	return nil
+}
+
+// TeardownAuth sends the AUTH DISABLE command but does not remove the Username and
+// Password from the client PasswordManager
+func (c *Client) TeardownAuth() error {
+	r, err := c.sendCmd("AUTH DISABLE\n")
+	if err != nil {
+		return err
+	}
+	if r.Topic != "AUTH" {
+		return fmt.Errorf("TeardownAuth Unknown Reply: %+v\n", r)
+	}
+	return nil
+}
+
+func (c *Client) RemoveAuthUser(user string) error {
+	r, err := c.sendCmd("AUTH REMOVE %s\n", user)
+	if err != nil {
+		return err
+	}
+	if r.Topic != "AUTH" {
+		return fmt.Errorf("RemoveAuthUser Unknown Reply: %+v\n", r)
+	}
+	return nil
+}