From 7f41c92bd6561a0d2a436a52b355983386d9366c Mon Sep 17 00:00:00 2001
From: Jouni Malinen <j@w1.fi>
Date: Sun, 4 Mar 2012 16:11:02 +0200
Subject: [PATCH] Interworking: Use EAP-AKA if USIM is used

Signed-hostap: Jouni Malinen <j@w1.fi>
---
 src/utils/pcsc_funcs.c        | 6 ++++++
 src/utils/pcsc_funcs.h        | 2 ++
 wpa_supplicant/interworking.c | 3 +++
 3 files changed, 11 insertions(+)

diff --git a/src/utils/pcsc_funcs.c b/src/utils/pcsc_funcs.c
index 5607adc5b..08510d015 100644
--- a/src/utils/pcsc_funcs.c
+++ b/src/utils/pcsc_funcs.c
@@ -1419,3 +1419,9 @@ int scard_umts_auth(struct scard_data *scard, const unsigned char *_rand,
 	wpa_printf(MSG_DEBUG, "SCARD: Unrecognized response");
 	return -1;
 }
+
+
+int scard_supports_umts(struct scard_data *scard)
+{
+	return scard->sim_type == SCARD_USIM;
+}
diff --git a/src/utils/pcsc_funcs.h b/src/utils/pcsc_funcs.h
index 9b945cc8e..092b14770 100644
--- a/src/utils/pcsc_funcs.h
+++ b/src/utils/pcsc_funcs.h
@@ -30,6 +30,7 @@ int scard_umts_auth(struct scard_data *scard, const unsigned char *_rand,
 		    unsigned char *res, size_t *res_len,
 		    unsigned char *ik, unsigned char *ck, unsigned char *auts);
 int scard_get_pin_retry_counter(struct scard_data *scard);
+int scard_supports_umts(struct scard_data *scard);
 
 #else /* PCSC_FUNCS */
 
@@ -40,6 +41,7 @@ int scard_get_pin_retry_counter(struct scard_data *scard);
 #define scard_gsm_auth(s, r, s2, k) -1
 #define scard_umts_auth(s, r, a, r2, rl, i, c, a2) -1
 #define scard_get_pin_retry_counter(s) -1
+#define scard_supports_umts(s) 0
 
 #endif /* PCSC_FUNCS */
 
diff --git a/wpa_supplicant/interworking.c b/wpa_supplicant/interworking.c
index a721e5d30..f826791ef 100644
--- a/wpa_supplicant/interworking.c
+++ b/wpa_supplicant/interworking.c
@@ -12,6 +12,7 @@
 #include "common/ieee802_11_defs.h"
 #include "common/gas.h"
 #include "common/wpa_ctrl.h"
+#include "utils/pcsc_funcs.h"
 #include "drivers/driver.h"
 #include "eap_common/eap_defs.h"
 #include "eap_peer/eap_methods.h"
@@ -656,6 +657,8 @@ static int interworking_connect_3gpp(struct wpa_supplicant *wpa_s,
 		wpa_printf(MSG_DEBUG, "EAP-SIM not supported");
 		goto fail;
 	}
+	if (cred->pcsc && wpa_s->scard && scard_supports_umts(wpa_s->scard))
+		wpa_config_set(ssid, "eap", "AKA", 0);
 	if (!cred->pcsc && set_root_nai(ssid, cred->imsi, '1') < 0) {
 		wpa_printf(MSG_DEBUG, "Failed to set Root NAI");
 		goto fail;