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DPP: Add DPP_CONFIGURATOR_SIGN support to hostapd

Browse source 
Configurator signing its own Connector was previously supported only in
wpa_supplicant. This commit extends that to hostapd to allow an AP
acting as a Configurator to self-configure itself.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This commit is contained in:
Jouni Malinen 2017-11-27 12:43:40 +02:00 committed by Jouni Malinen
parent 7eb6bfb45d
commit a2588be82c
6 changed files with 81 additions and 45 deletions
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3
hostapd/ctrl_iface.c
View file

@ -3040,6 +3040,9 @@ static int hostapd_ctrl_iface_receive_process(struct hostapd_data *hapd,
} else if (os_strncmp(buf, "DPP_CONFIGURATOR_REMOVE ", 24) == 0) {
if (hostapd_dpp_configurator_remove(hapd, buf + 24) < 0)
reply_len = -1;
} else if (os_strncmp(buf, "DPP_CONFIGURATOR_SIGN ", 22) == 0) {
if (hostapd_dpp_configurator_sign(hapd, buf + 22) < 0)
reply_len = -1;
} else if (os_strncmp(buf, "DPP_PKEX_ADD ", 13) == 0) {
res = hostapd_dpp_pkex_add(hapd, buf + 12);
if (res < 0) {

114
src/ap/dpp_hostapd.c
View file

@ -682,48 +682,9 @@ static void hostapd_dpp_rx_auth_req(struct hostapd_data *hapd, const u8 *src,
}
static void hostapd_dpp_gas_resp_cb(void *ctx, const u8 *addr, u8 dialog_token,
enum gas_query_ap_result result,
const struct wpabuf *adv_proto,
const struct wpabuf *resp, u16 status_code)
static void hostapd_dpp_handle_config_obj(struct hostapd_data *hapd,
struct dpp_authentication *auth)
{
struct hostapd_data *hapd = ctx;
const u8 *pos;
struct dpp_authentication *auth = hapd->dpp_auth;
if (!auth || !auth->auth_success) {
wpa_printf(MSG_DEBUG, "DPP: No matching exchange in progress");
return;
}
if (!resp || status_code != WLAN_STATUS_SUCCESS) {
wpa_printf(MSG_DEBUG, "DPP: GAS query did not succeed");
goto fail;
}
wpa_hexdump_buf(MSG_DEBUG, "DPP: Configuration Response adv_proto",
adv_proto);
wpa_hexdump_buf(MSG_DEBUG, "DPP: Configuration Response (GAS response)",
resp);
if (wpabuf_len(adv_proto) != 10 ||
!(pos = wpabuf_head(adv_proto)) ||
pos[0] != WLAN_EID_ADV_PROTO ||
pos[1] != 8 ||
pos[3] != WLAN_EID_VENDOR_SPECIFIC ||
pos[4] != 5 ||
WPA_GET_BE24(&pos[5]) != OUI_WFA ||
pos[8] != 0x1a ||
pos[9] != 1) {
wpa_printf(MSG_DEBUG,
"DPP: Not a DPP Advertisement Protocol ID");
goto fail;
}
if (dpp_conf_resp_rx(auth, resp) < 0) {
wpa_printf(MSG_DEBUG, "DPP: Configuration attempt failed");
goto fail;
}
wpa_msg(hapd->msg_ctx, MSG_INFO, DPP_EVENT_CONF_RECEIVED);
wpa_msg(hapd->msg_ctx, MSG_INFO, DPP_EVENT_CONFOBJ_AKM "%s",
dpp_akm_str(auth->akm));
@ -789,6 +750,52 @@ static void hostapd_dpp_gas_resp_cb(void *ctx, const u8 *addr, u8 dialog_token,
os_free(hex);
}
}
}
static void hostapd_dpp_gas_resp_cb(void *ctx, const u8 *addr, u8 dialog_token,
enum gas_query_ap_result result,
const struct wpabuf *adv_proto,
const struct wpabuf *resp, u16 status_code)
{
struct hostapd_data *hapd = ctx;
const u8 *pos;
struct dpp_authentication *auth = hapd->dpp_auth;
if (!auth || !auth->auth_success) {
wpa_printf(MSG_DEBUG, "DPP: No matching exchange in progress");
return;
}
if (!resp || status_code != WLAN_STATUS_SUCCESS) {
wpa_printf(MSG_DEBUG, "DPP: GAS query did not succeed");
goto fail;
}
wpa_hexdump_buf(MSG_DEBUG, "DPP: Configuration Response adv_proto",
adv_proto);
wpa_hexdump_buf(MSG_DEBUG, "DPP: Configuration Response (GAS response)",
resp);
if (wpabuf_len(adv_proto) != 10 ||
!(pos = wpabuf_head(adv_proto)) ||
pos[0] != WLAN_EID_ADV_PROTO ||
pos[1] != 8 ||
pos[3] != WLAN_EID_VENDOR_SPECIFIC ||
pos[4] != 5 ||
WPA_GET_BE24(&pos[5]) != OUI_WFA ||
pos[8] != 0x1a ||
pos[9] != 1) {
wpa_printf(MSG_DEBUG,
"DPP: Not a DPP Advertisement Protocol ID");
goto fail;
}
if (dpp_conf_resp_rx(auth, resp) < 0) {
wpa_printf(MSG_DEBUG, "DPP: Configuration attempt failed");
goto fail;
}
hostapd_dpp_handle_config_obj(hapd, auth);
dpp_auth_deinit(hapd->dpp_auth);
hapd->dpp_auth = NULL;
return;
@ -1534,6 +1541,31 @@ int hostapd_dpp_configurator_remove(struct hostapd_data *hapd, const char *id)
}
int hostapd_dpp_configurator_sign(struct hostapd_data *hapd, const char *cmd)
{
struct dpp_authentication *auth;
int ret = -1;
char *curve = NULL;
auth = os_zalloc(sizeof(*auth));
if (!auth)
return -1;
curve = get_param(cmd, " curve=");
hostapd_dpp_set_configurator(hapd, auth, cmd);
if (dpp_configurator_own_config(auth, curve, 1) == 0) {
hostapd_dpp_handle_config_obj(hapd, auth);
ret = 0;
}
dpp_auth_deinit(auth);
os_free(curve);
return ret;
}
int hostapd_dpp_pkex_add(struct hostapd_data *hapd, const char *cmd)
{
struct dpp_bootstrap_info *own_bi;

1
src/ap/dpp_hostapd.h
View file

@ -28,6 +28,7 @@ hostapd_dpp_gas_req_handler(struct hostapd_data *hapd, const u8 *sa,
const u8 *query, size_t query_len);
int hostapd_dpp_configurator_add(struct hostapd_data *hapd, const char *cmd);
int hostapd_dpp_configurator_remove(struct hostapd_data *hapd, const char *id);
int hostapd_dpp_configurator_sign(struct hostapd_data *hapd, const char *cmd);
int hostapd_dpp_pkex_add(struct hostapd_data *hapd, const char *cmd);
int hostapd_dpp_pkex_remove(struct hostapd_data *hapd, const char *id);
void hostapd_dpp_stop(struct hostapd_data *hapd);

4
src/common/dpp.c
View file

@ -5469,7 +5469,7 @@ fail:
int dpp_configurator_own_config(struct dpp_authentication *auth,
const char *curve)
const char *curve, int ap)
{
struct wpabuf *conf_obj;
int ret = -1;
@ -5500,7 +5500,7 @@ int dpp_configurator_own_config(struct dpp_authentication *auth,
auth->peer_protocol_key = auth->own_protocol_key;
dpp_copy_csign(auth, auth->conf->csign);
conf_obj = dpp_build_conf_obj(auth, 0);
conf_obj = dpp_build_conf_obj(auth, ap);
if (!conf_obj)
goto fail;
ret = dpp_parse_conf_obj(auth, wpabuf_head(conf_obj),

2
src/common/dpp.h
View file

@ -382,7 +382,7 @@ struct dpp_configurator *
dpp_keygen_configurator(const char *curve, const u8 *privkey,
size_t privkey_len);
int dpp_configurator_own_config(struct dpp_authentication *auth,
const char *curve);
const char *curve, int ap);
enum dpp_status_error
dpp_peer_intro(struct dpp_introduction *intro, const char *own_connector,
const u8 *net_access_key, size_t net_access_key_len,

2
wpa_supplicant/dpp_supplicant.c
View file

@ -2176,7 +2176,7 @@ int wpas_dpp_configurator_sign(struct wpa_supplicant *wpa_s, const char *cmd)
curve = get_param(cmd, " curve=");
wpas_dpp_set_configurator(wpa_s, auth, cmd);
if (dpp_configurator_own_config(auth, curve) == 0) {
if (dpp_configurator_own_config(auth, curve, 0) == 0) {
wpas_dpp_handle_config_obj(wpa_s, auth);
ret = 0;
}