wm: ircd

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add PASS

--- a/ircd.c

+++ b/ircd.c

@@ -1,6 +1,8 @@

 #include <u.h>

 #include <libc.h>

+char *password = nil; /* nil to disable server password */

+

 enum {

 	Maxclients = 5,

 	Maxchannels = 5,

@@ -57,6 +59,7 @@

 	int pid;

 	int pings; /* unreplied pings */

 	long msgtimer; /* for flood */

+	int passok; 

 };

 /* not to mix with thread(2) Channel:s */

@@ -413,11 +416,19 @@

 	}

 }

-void

+int

 setprefix(Client *c)

 {

+	/* fatal */

+	if(password != nil && !c->passok)

+	{

+		delclient(c);

+		return 1;

+	}

+

+	/* not fatal */

 	if(c->user == nil || c->nick == nil)

-		return;

+		return 0;

 	if(c->prefix != nil)

 		free(c->prefix);

@@ -425,6 +436,7 @@

 	c->prefix = smprint("%s!~%s@%s", c->nick, c->user, c->conninfo->rsys);

 	if(c->prefix == nil)

 		sysfatal("setprefix: smprint: %r");

+	return 0;

 }

 /* allowed chars: [0-9A-Za-z_] */

@@ -472,7 +484,10 @@

 	qlock(&clock);

 	c->user = estrdup(user);

-	setprefix(c);

+	

+	if(setprefix(c))

+		return 0;

+

 	qunlock(&clock);

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

@@ -527,7 +542,8 @@

 			first = 1;

 		c->nick = estrdup(nick);

-		setprefix(c);

+		if(setprefix(c))

+			return 0;

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

 	}

 	qunlock(&clock);

@@ -875,6 +891,31 @@

 }

 int

+pass(Client *c, char *p)

+{

+	if(password == nil)

+		return 1;

+

+	if(c->passok)

+	{

+		dprint("here\n");

+		close(c->fd);

+		return 0;

+	}

+	else

+	{

+		if(strcmp(p, password) != 0)

+		{

+			close(c->fd);

+			dprint("pass: %s, p: %s\n", password, p);

+		}

+		else

+			c->passok = 1;

+	}

+	return 1;

+}

+

+int

 process(Client *c, char *msg)

 {

 	char *cmd, *tmp, *tmp2;

@@ -905,6 +946,11 @@

 			return 0;

 		return user(c, tmp);

 	}

+	if(strcmp(cmd, "PASS") == 0){

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

+		return pass(c, tmp);

+	}

+

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

 		return 1;