From f53fa42ac3cce3743ad0d2fc565278274842402f Mon Sep 17 00:00:00 2001
From: Přemysl Janouch <p.janouch@gmail.com>
Date: Thu, 7 Aug 2014 23:41:22 +0200
Subject: kike: implement DIE and KILL

---
 src/kike.c | 72 +++++++++++++++++++++++++++++++++++++++++++++++---------------
 1 file changed, 55 insertions(+), 17 deletions(-)

diff --git a/src/kike.c b/src/kike.c
index 3435f6e..d3415e7 100644
--- a/src/kike.c
+++ b/src/kike.c
@@ -735,6 +735,26 @@ client_in_mask_list (const struct client *c, const struct str_vector *mask)
 	return result;
 }
 
+static void
+irc_initiate_quit (struct server_context *ctx)
+{
+	print_status ("shutting down");
+
+	for (struct client *iter = ctx->clients; iter; iter = iter->next)
+		if (!iter->closing_link)
+			irc_close_link (iter, "Shutting down");
+
+	ssize_t i = poller_find_by_fd (&ctx->poller, ctx->listen_fd);
+	if (soft_assert (i != -1))
+		poller_remove_at_index (&ctx->poller, i);
+	if (ctx->listen_fd != -1)
+		xclose (ctx->listen_fd);
+	ctx->listen_fd = -1;
+
+	ctx->quitting = true;
+	irc_try_finish_quit (ctx);
+}
+
 // --- Timers ------------------------------------------------------------------
 
 static void
@@ -864,6 +884,7 @@ enum
 	IRC_ERR_BANNEDFROMCHAN        = 474,
 	IRC_ERR_BADCHANNELKEY         = 475,
 	IRC_ERR_BADCHANMASK           = 476,
+	IRC_ERR_NOPRIVILEGES          = 481,
 	IRC_ERR_CHANOPRIVSNEEDED      = 482,
 
 	IRC_ERR_USERSDONTMATCH        = 502
@@ -939,6 +960,7 @@ static const char *g_default_replies[] =
 	[IRC_ERR_BANNEDFROMCHAN] = "%s :Cannot join channel (+b)",
 	[IRC_ERR_BADCHANNELKEY] = "%s :Cannot join channel (+k)",
 	[IRC_ERR_BADCHANMASK] = "%s :Bad Channel Mask",
+	[IRC_ERR_NOPRIVILEGES] = ":Permission Denied- You're not an IRC operator",
 	[IRC_ERR_CHANOPRIVSNEEDED] = "%s :You're not channel operator",
 
 	[IRC_ERR_USERSDONTMATCH] = ":Cannot change mode for other users",
@@ -1958,6 +1980,34 @@ irc_handle_ison (const struct irc_message *msg, struct client *c)
 	str_free (&result);
 }
 
+static void
+irc_handle_kill (const struct irc_message *msg, struct client *c)
+{
+	if (msg->params.len < 2)
+		RETURN_WITH_REPLY (c, IRC_ERR_NEEDMOREPARAMS, msg->command);
+	if (!(c->mode & IRC_USER_MODE_OPERATOR))
+		RETURN_WITH_REPLY (c, IRC_ERR_NOPRIVILEGES);
+
+	struct client *target;
+	if (!(target = str_map_find (&c->ctx->users, msg->params.vector[0])))
+		RETURN_WITH_REPLY (c, IRC_ERR_NOSUCHNICK, msg->params.vector[0]);
+	char *reason = xstrdup_printf ("Killed by %s: %s",
+		c->nickname, msg->params.vector[1]);
+	irc_close_link (target, reason);
+	free (reason);
+}
+
+static void
+irc_handle_die (const struct irc_message *msg, struct client *c)
+{
+	(void) msg;
+
+	if (!(c->mode & IRC_USER_MODE_OPERATOR))
+		RETURN_WITH_REPLY (c, IRC_ERR_NOPRIVILEGES);
+	if (!c->ctx->quitting)
+		irc_initiate_quit (c->ctx);
+}
+
 // -----------------------------------------------------------------------------
 
 struct irc_command
@@ -1972,6 +2022,7 @@ irc_register_handlers (struct server_context *ctx)
 {
 	// TODO: add an index for IRC_ERR_NOSUCHSERVER validation?
 	// TODO: add a minimal parameter count?
+	// TODO: add a field for oper-only commands?
 	static const struct irc_command message_handlers[] =
 	{
 		{ "PASS",     false, irc_handle_pass     },
@@ -2002,6 +2053,9 @@ irc_register_handlers (struct server_context *ctx)
 		{ "WHO",      true,  irc_handle_who      },
 		{ "WHOIS",    true,  irc_handle_whois    },
 		{ "ISON",     true,  irc_handle_ison     },
+
+		{ "KILL",     true,  irc_handle_kill     },
+		{ "DIE",      true,  irc_handle_die      },
 	};
 
 	for (size_t i = 0; i < N_ELEMENTS (message_handlers); i++)
@@ -2639,23 +2693,7 @@ on_signal_pipe_readable (const struct pollfd *fd, struct server_context *ctx)
 	(void) read (fd->fd, &dummy, 1);
 
 	if (g_termination_requested && !ctx->quitting)
-	{
-		print_status ("shutting down");
-
-		for (struct client *iter = ctx->clients; iter; iter = iter->next)
-			if (!iter->closing_link)
-				irc_close_link (iter, "Shutting down");
-
-		ssize_t i = poller_find_by_fd (&ctx->poller, ctx->listen_fd);
-		if (soft_assert (i != -1))
-			poller_remove_at_index (&ctx->poller, i);
-		if (ctx->listen_fd != -1)
-			xclose (ctx->listen_fd);
-		ctx->listen_fd = -1;
-
-		ctx->quitting = true;
-		irc_try_finish_quit (ctx);
-	}
+		irc_initiate_quit (ctx);
 }
 
 static void
-- 
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