Include support for IRC server operators

Added authentication interface for operators with basic implementation

oper.go

@@ -0,0 +1,56 @@
+package irc
+
+import "github.com/sorcix/irc"
+
+// OperAuthMethod is an interface for authenticating server level operators
+type OperAuthMethod interface {
+	Authenticate(username string, password string, conn *Client)
+}
+
+// OperAuthMethodFunc is a wrapper so regular functions can be an OperAuthMethod
+type OperAuthMethodFunc func(username string, password string, conn *Client)
+
+// Authenticate attempts to authenticate a given user
+func (o OperAuthMethodFunc) Authenticate(username string, password string, conn *Client) {
+	o(username, password, conn)
+}
+
+// BasicOperAuthMethod can handle simple username password mappings for operator authentication
+type BasicOperAuthMethod struct {
+	m map[string]string
+}
+
+// NewBasicOperAuthMethod creates and returns a new BasicOperAuthMethod
+func NewBasicOperAuthMethod() *BasicOperAuthMethod {
+	b := BasicOperAuthMethod{}
+	b.m = map[string]string{}
+	return &b
+}
+
+// Add adds a new username and password for an acceptable operator
+func (b BasicOperAuthMethod) Add(username, password string) {
+	b.m[username] = password
+
+}
+
+// Get returns the password if the username was found as a valid operator, if not found, ok will be false
+func (b BasicOperAuthMethod) Get(username string) (password string, ok bool) {
+	password, ok = b.m[username]
+	return
+}
+
+// Remove removes an operator from being allowed to authenticate
+func (b BasicOperAuthMethod) Remove(username string) {
+	delete(b.m, username)
+}
+
+// Authenticate locates if an operator of the given username is found, and if so checks if the password matches
+func (b BasicOperAuthMethod) Authenticate(username string, password string, client *Client) {
+	foundPassword, ok := b.m[username]
+	if !ok || foundPassword != password {
+		m := irc.Message{Prefix: client.Server.Prefix, Command: irc.ERR_PASSWDMISMATCH, Params: []string{client.Nickname}, Trailing: "Password incorrect"}
+		client.Encode(&m)
+		return
+	}
+	client.MakeOper()
+}

server.go

@@ -26,6 +26,8 @@ type Server struct {
 
 	channels     map[string]*Channel
 	channelMutex sync.RWMutex
+
+	OperAuthMethod
 }
 
 // ServerConfig contains configuration data for seeding a server