From 701e5dabb9d30d80d4d8a50b7bff292d1175d131 Mon Sep 17 00:00:00 2001
From: Andrew Zaborowski <andrew.zaborowski@intel.com>
Date: Wed, 1 Feb 2017 11:58:41 +0100
Subject: [PATCH] netdev: Handle the GTK & IGTK received in a FT

Parse the GTK and IGTK FT subelements and set the keys through netlink.
---
 src/netdev.c | 32 +++++++++++++++++++++++++++++++-
 1 file changed, 31 insertions(+), 1 deletion(-)

diff --git a/src/netdev.c b/src/netdev.c
index 71369537..edb38539 100644
--- a/src/netdev.c
+++ b/src/netdev.c
@@ -1186,7 +1186,6 @@ static bool netdev_handle_associate_resp_ies(struct handshake_state *hs,
 			 * R0KH-ID, R1KH-ID, ANonce and SNonce that we
 			 * received in message 2, MIC Element Count
 			 * of 6 and the correct MIC.
-			 * TODO: parse and use the GTK and IGTK subelements.
 			 */
 			uint8_t mic[16];
 
@@ -1209,6 +1208,37 @@ static bool netdev_handle_associate_resp_ies(struct handshake_state *hs,
 
 			if (memcmp(ft_info.snonce, hs->snonce, 32))
 				return false;
+
+			if (ft_info.gtk_len) {
+				uint8_t gtk[32];
+
+				if (!handshake_decode_fte_key(hs, ft_info.gtk,
+								ft_info.gtk_len,
+								gtk))
+					return false;
+
+				if (ft_info.gtk_rsc[6] != 0x00 ||
+						ft_info.gtk_rsc[7] != 0x00)
+					return false;
+
+				handshake_state_install_gtk(hs,
+							ft_info.gtk_key_id,
+							gtk, ft_info.gtk_len,
+							ft_info.gtk_rsc, 6);
+			}
+
+			if (ft_info.igtk_len) {
+				uint8_t igtk[16];
+
+				if (!handshake_decode_fte_key(hs, ft_info.igtk,
+							ft_info.igtk_len, igtk))
+					return false;
+
+				handshake_state_install_igtk(hs,
+							ft_info.igtk_key_id,
+							igtk, ft_info.igtk_len,
+							ft_info.igtk_ipn);
+			}
 		} else {
 			/* Initial MD association */