Interworking: Support real SIM/USIM card for network selection

Signed-hostap: Jouni Malinen <j@w1.fi>

wpa_supplicant/config.c

@@ -2229,6 +2229,11 @@ int wpa_config_set_cred(struct wpa_cred *cred, const char *var,
 		return 0;
 	}
 
+	if (os_strcmp(var, "pcsc") == 0) {
+		cred->pcsc = atoi(value);
+		return 0;
+	}
+
 	val = wpa_config_parse_string(value, &len);
 	if (val == NULL) {
 		wpa_printf(MSG_ERROR, "Line %d: invalid field '%s' string "

wpa_supplicant/config.h

@@ -60,6 +60,11 @@ struct wpa_cred {
 	 */
 	int priority;
 
+	/**
+	 * pcsc - Use PC/SC and SIM/USIM card
+	 */
+	int pcsc;
+
 	/**
 	 * realm - Home Realm for Interworking
 	 */

wpa_supplicant/config_file.c

@@ -659,6 +659,8 @@ static void wpa_config_write_cred(FILE *f, struct wpa_cred *cred)
 {
 	if (cred->priority)
 		fprintf(f, "\tpriority=%d\n", cred->priority);
+	if (cred->pcsc)
+		fprintf(f, "\tpcsc=%d\n", cred->pcsc);
 	if (cred->realm)
 		fprintf(f, "\trealm=\"%s\"\n", cred->realm);
 	if (cred->username)

wpa_supplicant/interworking.c

@@ -599,6 +599,17 @@ static int interworking_connect_3gpp(struct wpa_supplicant *wpa_s,
 
 	for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
 		char *sep;
+		const char *imsi;
+		int mnc_len;
+
+#ifdef PCSC_FUNCS
+		if (cred->pcsc && wpa_s->conf->pcsc_reader && wpa_s->scard &&
+		    wpa_s->imsi[0]) {
+			imsi = wpa_s->imsi;
+			mnc_len = wpa_s->mnc_len;
+			goto compare;
+		}
+#endif /* PCSC_FUNCS */
 
 		if (cred->imsi == NULL || !cred->imsi[0] ||
 		    cred->milenage == NULL || !cred->milenage[0])
@@ -608,9 +619,13 @@ static int interworking_connect_3gpp(struct wpa_supplicant *wpa_s,
 		if (sep == NULL ||
 		    (sep - cred->imsi != 5 && sep - cred->imsi != 6))
 			continue;
+		mnc_len = sep - cred->imsi - 3;
+		imsi = cred->imsi;
 
-		if (plmn_id_match(bss->anqp_3gpp, cred->imsi,
-				  sep - cred->imsi - 3))
+#ifdef PCSC_FUNCS
+	compare:
+#endif /* PCSC_FUNCS */
+		if (plmn_id_match(bss->anqp_3gpp, imsi, mnc_len))
 			break;
 	}
 	if (cred == NULL)
@@ -641,7 +656,7 @@ static int interworking_connect_3gpp(struct wpa_supplicant *wpa_s,
 		wpa_printf(MSG_DEBUG, "EAP-SIM not supported");
 		goto fail;
 	}
-	if (set_root_nai(ssid, cred->imsi, '1') < 0) {
+	if (!cred->pcsc && set_root_nai(ssid, cred->imsi, '1') < 0) {
 		wpa_printf(MSG_DEBUG, "Failed to set Root NAI");
 		goto fail;
 	}
@@ -650,10 +665,13 @@ static int interworking_connect_3gpp(struct wpa_supplicant *wpa_s,
 		if (wpa_config_set_quoted(ssid, "password",
 					  cred->milenage) < 0)
 			goto fail;
-	} else {
-		/* TODO: PIN */
+	} else if (cred->pcsc) {
 		if (wpa_config_set_quoted(ssid, "pcsc", "") < 0)
 			goto fail;
+		if (wpa_s->conf->pcsc_pin &&
+		    wpa_config_set_quoted(ssid, "pin", wpa_s->conf->pcsc_pin)
+		    < 0)
+			goto fail;
 	}
 
 	if (cred->password && cred->password[0] &&
@@ -871,6 +889,17 @@ static struct wpa_cred * interworking_credentials_available_3gpp(
 
 	for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
 		char *sep;
+		const char *imsi;
+		int mnc_len;
+
+#ifdef PCSC_FUNCS
+		if (cred->pcsc && wpa_s->conf->pcsc_reader && wpa_s->scard &&
+		    wpa_s->imsi[0]) {
+			imsi = wpa_s->imsi;
+			mnc_len = wpa_s->mnc_len;
+			goto compare;
+		}
+#endif /* PCSC_FUNCS */
 
 		if (cred->imsi == NULL || !cred->imsi[0] ||
 		    cred->milenage == NULL || !cred->milenage[0])
@@ -880,11 +909,15 @@ static struct wpa_cred * interworking_credentials_available_3gpp(
 		if (sep == NULL ||
 		    (sep - cred->imsi != 5 && sep - cred->imsi != 6))
 			continue;
+		mnc_len = sep - cred->imsi - 3;
+		imsi = cred->imsi;
 
+#ifdef PCSC_FUNCS
+	compare:
+#endif /* PCSC_FUNCS */
 		wpa_printf(MSG_DEBUG, "Interworking: Parsing 3GPP info from "
 			   MACSTR, MAC2STR(bss->bssid));
-		ret = plmn_id_match(bss->anqp_3gpp, cred->imsi,
-				    sep - cred->imsi - 3);
+		ret = plmn_id_match(bss->anqp_3gpp, imsi, mnc_len);
 		wpa_printf(MSG_DEBUG, "PLMN match %sfound", ret ? "" : "not ");
 		if (ret) {
 			if (selected == NULL ||

wpa_supplicant/wpa_supplicant.conf

@@ -255,6 +255,8 @@ fast_reauth=1
 #	network (based on either an enabled network block or a credential)
 #	with the highest priority value will be selected.
 #
+# pcsc: Use PC/SC and SIM/USIM card
+#
 # realm: Home Realm for Interworking
 #
 # username: Username for Interworking network selection