hostapd: Add openssl_ecdh_curves configuration parameter

This makes it possible to use ECDSA certificates with EAP-TLS/TTLS/etc.
It should be noted that when using Suite B, different mechanism is used
to specify the allowed ECDH curves and this new parameter must not be
used in such cases.

Signed-off-by: Hristo Venev <hristo@venev.name>

hostapd/config_file.c

@@ -2505,6 +2505,9 @@ static int hostapd_config_fill(struct hostapd_config *conf,
 	} else if (os_strcmp(buf, "openssl_ciphers") == 0) {
 		os_free(bss->openssl_ciphers);
 		bss->openssl_ciphers = os_strdup(pos);
+	} else if (os_strcmp(buf, "openssl_ecdh_curves") == 0) {
+		os_free(bss->openssl_ecdh_curves);
+		bss->openssl_ecdh_curves = os_strdup(pos);
 	} else if (os_strcmp(buf, "fragment_size") == 0) {
 		bss->fragment_size = atoi(pos);
 #ifdef EAP_SERVER_FAST

src/ap/ap_config.c

@@ -543,6 +543,7 @@ void hostapd_config_free_bss(struct hostapd_bss_config *conf)
 	os_free(conf->ocsp_stapling_response_multi);
 	os_free(conf->dh_file);
 	os_free(conf->openssl_ciphers);
+	os_free(conf->openssl_ecdh_curves);
 	os_free(conf->pac_opaque_encr_key);
 	os_free(conf->eap_fast_a_id);
 	os_free(conf->eap_fast_a_id_info);

src/ap/ap_config.h

@@ -395,6 +395,7 @@ struct hostapd_bss_config {
 	char *ocsp_stapling_response_multi;
 	char *dh_file;
 	char *openssl_ciphers;
+	char *openssl_ecdh_curves;
 	u8 *pac_opaque_encr_key;
 	u8 *eap_fast_a_id;
 	size_t eap_fast_a_id_len;

src/ap/authsrv.c

@@ -218,6 +218,7 @@ int authsrv_init(struct hostapd_data *hapd)
 		params.private_key_passwd = hapd->conf->private_key_passwd;
 		params.dh_file = hapd->conf->dh_file;
 		params.openssl_ciphers = hapd->conf->openssl_ciphers;
+		params.openssl_ecdh_curves = hapd->conf->openssl_ecdh_curves;
 		params.ocsp_stapling_response =
 			hapd->conf->ocsp_stapling_response;
 		params.ocsp_stapling_response_multi =