ONICK command to allow operators to change users' nicks

irc/nickname.go

@@ -0,0 +1,99 @@
+package irc
+
+import (
+	"fmt"
+)
+
+type NickCommand struct {
+	BaseCommand
+	nickname Name
+}
+
+func (m *NickCommand) String() string {
+	return fmt.Sprintf("NICK(nickname=%s)", m.nickname)
+}
+
+func (m *NickCommand) HandleRegServer(s *Server) {
+	client := m.Client()
+	if !client.authorized {
+		client.ErrPasswdMismatch()
+		client.Quit("bad password")
+		return
+	}
+
+	if client.capState == CapNegotiating {
+		client.capState = CapNegotiated
+	}
+
+	if m.nickname == "" {
+		client.ErrNoNicknameGiven()
+		return
+	}
+
+	if s.clients.Get(m.nickname) != nil {
+		client.ErrNickNameInUse(m.nickname)
+		return
+	}
+
+	if !m.nickname.IsNickname() {
+		client.ErrErroneusNickname(m.nickname)
+		return
+	}
+
+	client.SetNickname(m.nickname)
+	s.tryRegister(client)
+}
+
+func (msg *NickCommand) HandleServer(server *Server) {
+	client := msg.Client()
+
+	if msg.nickname == "" {
+		client.ErrNoNicknameGiven()
+		return
+	}
+
+	if !msg.nickname.IsNickname() {
+		client.ErrErroneusNickname(msg.nickname)
+		return
+	}
+
+	if msg.nickname == client.nick {
+		return
+	}
+
+	target := server.clients.Get(msg.nickname)
+	if (target != nil) && (target != client) {
+		client.ErrNickNameInUse(msg.nickname)
+		return
+	}
+
+	client.ChangeNickname(msg.nickname)
+}
+
+type OperNickCommand struct {
+	BaseCommand
+	target Name
+	nick   Name
+}
+
+func (msg *OperNickCommand) HandleServer(server *Server) {
+	client := msg.Client()
+
+	if !client.flags[Operator] {
+		client.ErrNoPrivileges()
+		return
+	}
+
+	if !msg.nick.IsNickname() {
+		client.ErrErroneusNickname(msg.nick)
+		return
+	}
+
+	target := server.clients.Get(msg.target)
+	if target == nil {
+		client.ErrNoSuchNick(msg.target)
+		return
+	}
+
+	target.ChangeNickname(msg.nick)
+}