From facd8105481b2af1f8c519905c8150e6da5347ea Mon Sep 17 00:00:00 2001
From: Přemysl Janouch <p.janouch@gmail.com>
Date: Sat, 2 Aug 2014 17:01:05 +0200
Subject: kike: implement clean shutdown

---
 src/kike.c | 33 +++++++++++++++++++++++++--------
 1 file changed, 25 insertions(+), 8 deletions(-)

(limited to 'src')

diff --git a/src/kike.c b/src/kike.c
index 9a744c2..d9b8291 100644
--- a/src/kike.c
+++ b/src/kike.c
@@ -423,7 +423,6 @@ server_context_free (struct server_context *self)
 	if (self->ssl_ctx)
 		SSL_CTX_free (self->ssl_ctx);
 
-	// TODO: terminate the connections properly before this is called
 	struct client *link, *tmp;
 	for (link = self->clients; link; link = tmp)
 	{
@@ -464,6 +463,13 @@ client_unregister (struct client *c, const char *reason)
 	c->registered = false;
 }
 
+static void
+irc_try_finish_quit (struct server_context *ctx)
+{
+	if (!ctx->n_clients && ctx->quitting)
+		ctx->polling = false;
+}
+
 static void
 client_kill (struct client *c, const char *reason)
 {
@@ -483,6 +489,8 @@ client_kill (struct client *c, const char *reason)
 	LIST_UNLINK (ctx->clients, c);
 	ctx->n_clients--;
 	free (c);
+
+	irc_try_finish_quit (ctx);
 }
 
 static void
@@ -1266,8 +1274,7 @@ on_irc_client_available (const struct pollfd *pfd, void *user_data)
 			exit_fatal ("%s: %s", "accept", strerror (errno));
 		}
 
-		if (ctx->max_connections != 0
-		 && ctx->n_clients >= ctx->max_connections)
+		if (ctx->max_connections != 0 && ctx->n_clients >= ctx->max_connections)
 		{
 			print_debug ("connection limit reached, refusing connection");
 			close (fd);
@@ -1580,13 +1587,23 @@ on_signal_pipe_readable (const struct pollfd *fd, struct server_context *ctx)
 	char *dummy;
 	(void) read (fd->fd, &dummy, 1);
 
-	// TODO: send ERROR messages to anyone, wait for the messages to get
-	//   dispatched for a few seconds, RST the rest and quit.
 	if (g_termination_requested && !ctx->quitting)
 	{
-#if 0
-		initiate_quit (ctx);
-#endif
+		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);
 	}
 }
 
-- 
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