hostapd: reconfigure wps credentials on reload
This patch fixes a bug that prevents updating Multi-AP credentials after hostapd has started. It was sent to upstream hostapd here: https://patchwork.ozlabs.org/bundle/rmelotte/hostapd:%20update%20WPS%20credentials%20on%20SIGHUP/ Signed-off-by: Raphaël Mélotte <raphael.melotte@mind.be>
This commit is contained in:
Raphaël Mélotte
Petr Štetiar
parent
59fa9c28d6
commit
14b9100f1c
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From b389a77a0f6dccf495dbce5be9476000f6ec06a2 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Rapha=C3=ABl=20M=C3=A9lotte?= <raphael.melotte@mind.be>
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Date: Wed, 9 Dec 2020 19:55:53 +0100
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Subject: [PATCH] wps: reconfigure credentials on reload
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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When new credentials are configured and hostapd is reconfigured using
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SIGHUP (or reload on the ctrl_iface), also update the wps credentials.
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Before these changes, when WPS is triggered the registar always serves
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the credentials that were configured when hostapd started.
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Signed-off-by: Raphaël Mélotte <raphael.melotte@mind.be>
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---
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src/ap/wps_hostapd.c | 86 +++++++++++++++++++++++++++++++++++++++--
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src/wps/wps.h | 6 +++
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src/wps/wps_registrar.c | 29 ++++++++++++++
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3 files changed, 118 insertions(+), 3 deletions(-)
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diff --git a/src/ap/wps_hostapd.c b/src/ap/wps_hostapd.c
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index dc8aa8f65..ff942a67b 100644
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--- a/src/ap/wps_hostapd.c
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+++ b/src/ap/wps_hostapd.c
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@@ -1375,6 +1375,43 @@ static void hostapd_wps_nfc_clear(struct wps_context *wps)
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#endif /* CONFIG_WPS_NFC */
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}
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+int hostapd_wps_update_multi_ap(struct hostapd_data *hapd,
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+ struct wps_registrar *reg) {
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+ struct hostapd_bss_config *conf = hapd->conf;
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+ u8 *multi_ap_backhaul_network_key = NULL;
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+ size_t multi_ap_backhaul_network_key_len = 0;
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+ int ret = -1;
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+
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+ if ((conf->multi_ap & FRONTHAUL_BSS) &&
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+ conf->multi_ap_backhaul_ssid.ssid_len) {
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+ if (conf->multi_ap_backhaul_ssid.wpa_passphrase) {
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+ multi_ap_backhaul_network_key =
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+ (u8 *) os_strdup(conf->multi_ap_backhaul_ssid.wpa_passphrase);
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+ if (multi_ap_backhaul_network_key == NULL)
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+ return -1;
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+ multi_ap_backhaul_network_key_len =
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+ os_strlen(conf->multi_ap_backhaul_ssid.wpa_passphrase);
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+ } else if (conf->multi_ap_backhaul_ssid.wpa_psk) {
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+ multi_ap_backhaul_network_key = os_malloc(2 * PMK_LEN + 1);
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+ if (multi_ap_backhaul_network_key == NULL)
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+ return -1;
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+ wpa_snprintf_hex((char *) multi_ap_backhaul_network_key,
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+ 2 * PMK_LEN + 1,
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+ conf->multi_ap_backhaul_ssid.wpa_psk->psk,
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+ PMK_LEN);
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+ multi_ap_backhaul_network_key_len = 2 * PMK_LEN;
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+ }
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+ ret = wps_registrar_update_multi_ap(reg,
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+ conf->multi_ap_backhaul_ssid.ssid,
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+ conf->multi_ap_backhaul_ssid.ssid_len,
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+ multi_ap_backhaul_network_key,
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+ multi_ap_backhaul_network_key_len);
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+ os_free(multi_ap_backhaul_network_key);
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+ }
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+ return ret;
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+}
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+
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+
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void hostapd_deinit_wps(struct hostapd_data *hapd)
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{
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@@ -1409,11 +1446,54 @@ void hostapd_update_wps(struct hostapd_data *hapd)
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hapd->wps->upc = hapd->conf->upc;
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#endif /* CONFIG_WPS_UPNP */
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- hostapd_wps_set_vendor_ext(hapd, hapd->wps);
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- hostapd_wps_set_application_ext(hapd, hapd->wps);
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+ struct wps_context *wps = hapd->wps;
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+ struct hostapd_bss_config *conf = hapd->conf;
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+
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+ os_memcpy(wps->ssid, conf->ssid.ssid, conf->ssid.ssid_len);
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+ wps->ssid_len = conf->ssid.ssid_len;
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+
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+ /* Clear wps settings, then fill them again */
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+ os_free(wps->network_key);
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+ wps->network_key = NULL;
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+ wps->network_key_len = 0;
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+ wps->psk_set = 0;
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+ if (conf->ssid.wpa_psk_file) {
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+ /* Use per-device PSKs */
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+ } else if (conf->ssid.wpa_passphrase) {
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+ wps->network_key = (u8 *) os_strdup(conf->ssid.wpa_passphrase);
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+ if (wps->network_key == NULL)
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+ return;
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+ wps->network_key_len = os_strlen(conf->ssid.wpa_passphrase);
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+ } else if (conf->ssid.wpa_psk) {
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+ wps->network_key = os_malloc(2 * PMK_LEN + 1);
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+ if (wps->network_key == NULL)
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+ return;
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+ wpa_snprintf_hex((char *) wps->network_key, 2 * PMK_LEN + 1,
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+ conf->ssid.wpa_psk->psk, PMK_LEN);
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+ wps->network_key_len = 2 * PMK_LEN;
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+#ifdef CONFIG_WEP
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+ } else if (conf->ssid.wep.keys_set && conf->ssid.wep.key[0]) {
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+ wps->network_key = os_malloc(conf->ssid.wep.len[0]);
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+ if (wps->network_key == NULL)
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+ return;
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+ os_memcpy(wps->network_key, conf->ssid.wep.key[0],
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+ conf->ssid.wep.len[0]);
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+ wps->network_key_len = conf->ssid.wep.len[0];
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+#endif /* CONFIG_WEP */
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+ }
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+
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+ if (conf->ssid.wpa_psk) {
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+ os_memcpy(wps->psk, conf->ssid.wpa_psk->psk, PMK_LEN);
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+ wps->psk_set = 1;
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+ }
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+
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+ hostapd_wps_update_multi_ap(hapd, wps->registrar);
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+
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+ hostapd_wps_set_vendor_ext(hapd, wps);
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+ hostapd_wps_set_application_ext(hapd, wps);
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if (hapd->conf->wps_state)
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- wps_registrar_update_ie(hapd->wps->registrar);
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+ wps_registrar_update_ie(wps->registrar);
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else
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hostapd_deinit_wps(hapd);
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}
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diff --git a/src/wps/wps.h b/src/wps/wps.h
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index 93888b011..110e3ea52 100644
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--- a/src/wps/wps.h
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+++ b/src/wps/wps.h
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@@ -938,6 +938,12 @@ struct wpabuf * wps_build_nfc_handover_sel_p2p(struct wps_context *ctx,
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struct wpabuf *nfc_dh_pubkey,
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struct wpabuf *nfc_dev_pw);
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+int wps_registrar_update_multi_ap(struct wps_registrar *reg,
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+ const u8 *multi_ap_backhaul_ssid,
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+ size_t multi_ap_backhaul_ssid_len,
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+ const u8 *multi_ap_backhaul_network_key,
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+ size_t multi_ap_backhaul_network_key_len);
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+
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/* ndef.c */
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struct wpabuf * ndef_parse_wifi(const struct wpabuf *buf);
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struct wpabuf * ndef_build_wifi(const struct wpabuf *buf);
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diff --git a/src/wps/wps_registrar.c b/src/wps/wps_registrar.c
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index 9e1ee36da..d6b27be28 100644
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--- a/src/wps/wps_registrar.c
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+++ b/src/wps/wps_registrar.c
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@@ -3669,6 +3669,35 @@ int wps_registrar_config_ap(struct wps_registrar *reg,
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}
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+int wps_registrar_update_multi_ap(struct wps_registrar *reg,
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+ const u8 *multi_ap_backhaul_ssid,
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+ size_t multi_ap_backhaul_ssid_len,
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+ const u8 *multi_ap_backhaul_network_key,
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+ size_t multi_ap_backhaul_network_key_len)
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+{
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+ if (multi_ap_backhaul_ssid != NULL) {
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+ os_memcpy(reg->multi_ap_backhaul_ssid,
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+ multi_ap_backhaul_ssid,
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+ multi_ap_backhaul_ssid_len);
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+ reg->multi_ap_backhaul_ssid_len =
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+ multi_ap_backhaul_ssid_len;
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+ }
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+ os_free(reg->multi_ap_backhaul_network_key);
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+ reg->multi_ap_backhaul_network_key = NULL;
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+ reg->multi_ap_backhaul_network_key_len = 0;
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+
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+ if (multi_ap_backhaul_network_key != NULL) {
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+ reg->multi_ap_backhaul_network_key =
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+ os_memdup(multi_ap_backhaul_network_key,
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+ multi_ap_backhaul_network_key_len);
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+ if (reg->multi_ap_backhaul_network_key == NULL)
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+ return -1;
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+ reg->multi_ap_backhaul_network_key_len =
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+ multi_ap_backhaul_network_key_len;
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+ }
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+ return 0;
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+}
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+
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#ifdef CONFIG_WPS_NFC
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int wps_registrar_add_nfc_pw_token(struct wps_registrar *reg,
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--
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2.29.2
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