From aff29861afd2c1344bde46f8d997a53919274a1a Mon Sep 17 00:00:00 2001
From: Skywing <skywing@valhallalegends.com>
Date: Sat, 13 Dec 2008 14:15:15 -0500
Subject: [PATCH] Cancel future rekeys on a detaching client connection.

Previously, these wouldn't be cancelled properly, and might result in
some complaints from the SILC SKE library due to bad parameters.
---
 apps/silcd/command.c |  3 +++
 apps/silcd/server.c  | 12 ++++++++++++
 apps/silcd/server.h  |  1 +
 3 files changed, 16 insertions(+)

diff --git a/apps/silcd/command.c b/apps/silcd/command.c
index 698b2265..f68edccd 100644
--- a/apps/silcd/command.c
+++ b/apps/silcd/command.c
@@ -4074,6 +4074,9 @@ SILC_TASK_CALLBACK(silc_server_command_detach_cb)
   if (client && client->connection) {
     sock = client->connection;
 
+    /* Stop rekey for the client. */
+    silc_server_stop_rekey(server, client);
+
     /* Close the connection on our side */
     client->router = NULL;
     client->connection = NULL;
diff --git a/apps/silcd/server.c b/apps/silcd/server.c
index dad1a44e..3d0623ac 100644
--- a/apps/silcd/server.c
+++ b/apps/silcd/server.c
@@ -2903,6 +2903,18 @@ static void silc_server_rekey_completion(SilcSKE ske,
 				 sock, idata->sconn->rekey_timeout, 0);
 }
 
+/* Helper to stop future rekeys on a link. */
+void silc_server_stop_rekey(SilcServer server, SilcClientEntry client)
+{
+  if (!client->connection)
+    return;
+
+  SILC_LOG_DEBUG(("Stopping rekey for client %p", client));
+
+  silc_schedule_task_del_by_all(server->schedule, 0, silc_server_do_rekey,
+				client->connection);
+}
+
 /* Rekey callback.  Start rekey as initiator */
 
 SILC_TASK_CALLBACK(silc_server_do_rekey)
diff --git a/apps/silcd/server.h b/apps/silcd/server.h
index 84ed585b..81a6f3d9 100644
--- a/apps/silcd/server.h
+++ b/apps/silcd/server.h
@@ -139,6 +139,7 @@ SilcBool silc_server_rehash(SilcServer server);
 void silc_server_run(SilcServer server);
 void silc_server_stop(SilcServer server);
 void silc_server_start_key_exchange(SilcServerConnection sconn);
+void silc_server_stop_rekey(SilcServer server, SilcClientEntry client);
 void silc_server_create_connection(SilcServer server,
 				   SilcBool reconnect,
 				   SilcBool dynamic,
-- 
2.24.0