wm: ircd

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add 451 and 461

--- a/ircd.c

+++ b/ircd.c

@@ -29,6 +29,8 @@

 	Notopic,

 	Rpltopic,

 	Rpltopicwho,

+	Notregistered,

+	Alreadyregistered,

 	Unknowncmd,

 };

@@ -371,6 +373,12 @@

 		/* r->argv is: channel */

 		n = snprint(buf, n, ":%s 331 %s %s :No topic is set\r\n", servername, c->nick, r->argv[0]);

 		break;

+	case Notregistered:

+		n = snprint(buf, n, ":%s 451 %s :Connection not registered\r\n", servername, c->nick);

+		break;

+	case Alreadyregistered:

+		n = snprint(buf, n, ":%s 461 %s :Connection already registered", servername, c->nick);

+		break;

 	case Unknowncmd:

 		/* r->argv is: command */

 		n = snprint(buf, n, ":%s 421 %s %s :Unknown command\r\n", servername, c->nick, r->argv[0]);

@@ -483,7 +491,11 @@

 	Reply r;

 	if(c->user != nil)

-		return 0;

+	{

+		r.code = Alreadyregistered;

+		reply(c, &r);

+		return 1;

+	}

 	qlock(&clock);

 	c->user = estrdup(user);

@@ -954,8 +966,11 @@

 		return pass(c, tmp);

 	}

-	if(c->prefix == nil) /* not registered */

+	if(c->prefix == nil){ /* not registered */

+		r.code = Notregistered;

+		reply(c, &r);

 		return 1;

+	}

 	if(strcmp(cmd, "PRIVMSG") == 0){

 		tmp = strtok(0, " :"); /* target */