wm: ircd

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add 403 (Nosuchchannel)

--- a/ircd.c

+++ b/ircd.c

@@ -31,6 +31,7 @@

 	Rpltopicwho,

 	Notregistered,

 	Alreadyregistered,

+	Nosuchchannel,

 	Unknowncmd,

 };

@@ -358,6 +359,10 @@

 		/* r->argv[0] is nick/channel */

 		n = snprint(buf, n, ":%s 401 %s %s :No such nick/channel\r\n", servername, c->nick, r->argv[0]);

 		break;

+	case Nosuchchannel:

+		/* r->argv is: channel */

+		n = snprint(buf, n, ":%s 403 %s :No such channel\r\n", servername, r->argv[0]);

+		break;

 	case Erroneousnick:

 		/* r->argv[0] is nick */

 		n = snprint(buf, n, ":%s 432 %s %s :Erroneous nickname\r\n", servername, c->nick, r->argv[0]);

@@ -683,12 +688,16 @@

 	if(ch == nil){

 		if(channels.size == Maxchannels){

 			fprint(2, "%d: Maxchannels reached\n", c->fd);

-			/* reply? */

+			r.code = Nosuchchannel;

+			r.argv[0] = chan;

+			reply(c, &r);

 			goto end;

 		}

 		if(!validchan(chan)){

 			dprint("%d: invalid chan %s\n", c->fd, chan);

-			/* reply? */

+			r.code = Nosuchchannel;

+			r.argv[0] = chan;

+			reply(c, &r);

 			goto end;

 		}

 		ch = addchan(chan);

@@ -993,7 +1002,7 @@

 		tmp2++;

 		return privmsg(c, tmp, tmp2);

 	}

-	/* JOIN #c or JOIN #c1,#c2, hence the check for "," */

+	/* JOIN #c or JOIN #c1,#c2 hence the check for "," */

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

 		tmp = strtok(0, " \r"); /* channels */

 		if(tmp == nil)