1 files changed, 75 insertions, 0 deletions
diff --git a/src/fe-common/irc/fe-sasl.c b/src/fe-common/irc/fe-sasl.c
new file mode 100644
index 00000000..fc8105fc
--- /dev/null
+++ b/src/fe-common/irc/fe-sasl.c
@@ -0,0 +1,75 @@
+/*
+    fe-sasl.c : irssi
+
+    Copyright (C) 2015-2017 The Lemon Man
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License along
+    with this program; if not, write to the Free Software Foundation, Inc.,
+    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+#include "module.h"
+#include "module-formats.h"
+#include "signals.h"
+#include "levels.h"
+#include "misc.h"
+#include "sasl.h"
+
+#include "irc-servers.h"
+#include "settings.h"
+
+#include "printtext.h"
+
+static void sig_sasl_success(IRC_SERVER_REC *server)
+{
+	printformat(server, NULL, MSGLEVEL_CRAP, IRCTXT_SASL_SUCCESS);
+}
+
+static void sig_sasl_failure(IRC_SERVER_REC *server, const char *reason)
+{
+	printformat(server, NULL, MSGLEVEL_CRAP, IRCTXT_SASL_ERROR, reason);
+}
+
+static void sig_cap_end(IRC_SERVER_REC *server)
+{
+	/* The negotiation has now been terminated, if we didn't manage to
+	 * authenticate successfully with the server just disconnect. */
+	if (!server->sasl_success &&
+	    server->connrec->sasl_mechanism != SASL_MECHANISM_NONE &&
+	    settings_get_bool("sasl_disconnect_on_failure")) {
+		/* We can't use server_disconnect() here because we'd end up
+		 * freeing the 'server' object and be guilty of a slew of UaF. */
+		server->connection_lost = TRUE;
+		/* By setting connection_lost we make sure the communication is
+		 * halted and when the control goes back to irc_parse_incoming
+		 * the server object is safely destroyed. */
+		signal_stop();
+	}
+
+}
+
+void fe_sasl_init(void)
+{
+	settings_add_bool("server", "sasl_disconnect_on_failure", TRUE);
+
+	signal_add("server sasl success", (SIGNAL_FUNC) sig_sasl_success);
+	signal_add("server sasl failure", (SIGNAL_FUNC) sig_sasl_failure);
+	signal_add_first("server cap end", (SIGNAL_FUNC) sig_cap_end);
+}
+
+void fe_sasl_deinit(void)
+{
+	signal_remove("server sasl success", (SIGNAL_FUNC) sig_sasl_success);
+	signal_remove("server sasl failure", (SIGNAL_FUNC) sig_sasl_failure);
+	signal_remove("server cap end", (SIGNAL_FUNC) sig_cap_end);
+}