eapol: Add beginnings of EAPoL utilities

Makefile.am

@@ -61,7 +61,8 @@ monitor_iwmon_SOURCES = monitor/main.c linux/nl80211.h \
 					monitor/pcap.h monitor/pcap.c \
 					monitor/display.h monitor/display.c \
 					src/ie.h src/ie.c \
-					src/util.h src/util.c
+					src/util.h src/util.c \
+					src/eapol.h src/eapol.c
 monitor_iwmon_LDADD = ell/libell-internal.la
 
 noinst_PROGRAMS = tools/hwsim

src/eapol.c

@@ -0,0 +1,31 @@
+/*
+ *
+ *  Wireless daemon for Linux
+ *
+ *  Copyright (C) 2013-2014  Intel Corporation. All rights reserved.
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Lesser General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2.1 of the License, or (at your option) any later version.
+ *
+ *  This library 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
+ *  Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public
+ *  License along with this library; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <string.h>
+#include <ell/ell.h>
+
+#include "eapol.h"
+

src/eapol.h

@@ -0,0 +1,92 @@
+/*
+ *
+ *  Wireless daemon for Linux
+ *
+ *  Copyright (C) 2013-2014  Intel Corporation. All rights reserved.
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Lesser General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2.1 of the License, or (at your option) any later version.
+ *
+ *  This library 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
+ *  Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public
+ *  License along with this library; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <asm/byteorder.h>
+#include <linux/types.h>
+
+enum eapol_protocol_version {
+	EAPOL_PROTOCOL_VERSION_2001	= 1,
+	EAPOL_PTOTOCOL_VERSION_2004	= 2,
+};
+
+/*
+ * 802.1X-2010: Table 11-5—Descriptor Type value assignments
+ * The WPA key type of 254 comes from somewhere else.  Seems it is a legacy
+ * value that might still be used by older implementations
+ */
+enum eapol_descriptor_type {
+	EAPOL_DESCRIPTOR_TYPE_RC4	= 1,
+	EAPOL_DESCRIPTOR_TYPE_80211	= 2,
+	EAPOL_DESCRIPTOR_TYPE_WPA	= 254,
+};
+
+enum eapol_key_descriptor_version {
+	EAPOL_KEY_DESCRIPTOR_VERSION_HMAC_MD5_ARC4	= 1,
+	EAPOL_KEY_DESCRIPTOR_VERSION_HMAC_SHA1_AES	= 2,
+	EAPOL_KEY_DESCRIPTOR_VERSION_AES_128_CMAC_AES	= 3,
+};
+
+struct eapol_key {
+	uint8_t protocol_version;
+	uint8_t packet_type;
+	__be16 packet_len;
+	uint8_t descriptor_type;
+#if defined(__LITTLE_ENDIAN_BITFIELD)
+	bool key_mic:1;
+	bool secure:1;
+	bool error:1;
+	bool request:1;
+	bool encrypted_key_data:1;
+	bool smk_message:1;
+	uint8_t reserved2:2;
+	uint8_t key_descriptor_version:3;
+	bool key_type:1;
+	uint8_t reserved1:2;
+	bool install:1;
+	bool key_ack:1;
+#elif defined (__BIG_ENDIAN_BITFIELD)
+	uint8_t reserved2:2;
+	bool smk_message:1;
+	bool encrypted_key_data:1;
+	bool request:1;
+	bool error:1;
+	bool secure:1;
+	bool key_mic:1;
+	bool key_ack:1;
+	bool install:1;
+	uint8_t reserved1:2;
+	bool key_type:1;
+	uint8_t key_descriptor_version:3;
+#else
+#error  "Please fix <asm/byteorder.h>"
+#endif
+
+	__be16 key_length;
+	uint8_t key_replay_counter[8];
+	uint8_t key_nonce[32];
+	uint8_t eapol_key_iv[16];
+	uint8_t key_mic_data[16];
+	__be16 key_data_len;
+	uint8_t key_data[0];
+} __attribute__ ((packed));