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@@ -0,0 +1,249 @@
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+/*
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+ * wpa_supplicant / ubus support
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+ * Copyright (c) 2018, Daniel Golle <[email protected]>
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+ * Copyright (c) 2013, Felix Fietkau <[email protected]>
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+ *
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+ * This software may be distributed under the terms of the BSD license.
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+ * See README for more details.
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+ */
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+
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+#include "utils/includes.h"
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+#include "utils/common.h"
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+#include "utils/eloop.h"
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+#include "utils/wpabuf.h"
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+#include "common/ieee802_11_defs.h"
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+#include "wpa_supplicant_i.h"
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+#include "wps_supplicant.h"
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+#include "ubus.h"
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+
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+static struct ubus_context *ctx;
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+static struct blob_buf b;
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+static int ctx_ref;
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+
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+static inline struct wpa_supplicant *get_wpas_from_object(struct ubus_object *obj)
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+{
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+ return container_of(obj, struct wpa_supplicant, ubus.obj);
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+}
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+
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+static void ubus_receive(int sock, void *eloop_ctx, void *sock_ctx)
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+{
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+ struct ubus_context *ctx = eloop_ctx;
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+ ubus_handle_event(ctx);
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+}
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+
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+static void ubus_reconnect_timeout(void *eloop_data, void *user_ctx)
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+{
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+ if (ubus_reconnect(ctx, NULL)) {
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+ eloop_register_timeout(1, 0, ubus_reconnect_timeout, ctx, NULL);
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+ return;
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+ }
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+
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+ eloop_register_read_sock(ctx->sock.fd, ubus_receive, ctx, NULL);
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+}
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+
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+static void wpas_ubus_connection_lost(struct ubus_context *ctx)
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+{
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+ eloop_unregister_read_sock(ctx->sock.fd);
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+ eloop_register_timeout(1, 0, ubus_reconnect_timeout, ctx, NULL);
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+}
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+
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+static bool wpas_ubus_init(void)
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+{
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+ if (ctx)
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+ return true;
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+
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+ ctx = ubus_connect(NULL);
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+ if (!ctx)
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+ return false;
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+
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+ ctx->connection_lost = wpas_ubus_connection_lost;
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+ eloop_register_read_sock(ctx->sock.fd, ubus_receive, ctx, NULL);
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+ return true;
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+}
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+
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+static void wpas_ubus_ref_inc(void)
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+{
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+ ctx_ref++;
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+}
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+
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+static void wpas_ubus_ref_dec(void)
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+{
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+ ctx_ref--;
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+ if (!ctx)
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+ return;
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+
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+ if (ctx_ref)
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+ return;
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+
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+ eloop_unregister_read_sock(ctx->sock.fd);
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+ ubus_free(ctx);
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+ ctx = NULL;
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+}
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+
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+static int
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+wpas_bss_get_features(struct ubus_context *ctx, struct ubus_object *obj,
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+ struct ubus_request_data *req, const char *method,
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+ struct blob_attr *msg)
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+{
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+ struct wpa_supplicant *wpa_s = get_wpas_from_object(obj);
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+
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+ blob_buf_init(&b, 0);
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+ blobmsg_add_u8(&b, "ht_supported", ht_supported(wpa_s->hw.modes));
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+ blobmsg_add_u8(&b, "vht_supported", vht_supported(wpa_s->hw.modes));
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+ ubus_send_reply(ctx, req, b.head);
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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
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+static int
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+wpas_bss_wps_start(struct ubus_context *ctx, struct ubus_object *obj,
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+ struct ubus_request_data *req, const char *method,
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+ struct blob_attr *msg)
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+{
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+ int rc;
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+ struct wpa_supplicant *wpa_s = get_wpas_from_object(obj);
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+
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+ rc = wpas_wps_start_pbc(wpa_s, NULL, 0);
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+
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+ if (rc != 0)
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+ return UBUS_STATUS_NOT_SUPPORTED;
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+
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+ return 0;
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+}
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+
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+static int
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+wpas_bss_wps_cancel(struct ubus_context *ctx, struct ubus_object *obj,
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+ struct ubus_request_data *req, const char *method,
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+ struct blob_attr *msg)
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+{
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+ int rc;
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+ struct wpa_supplicant *wpa_s = get_wpas_from_object(obj);
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+
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+ rc = wpas_wps_cancel(wpa_s);
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+
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+ if (rc != 0)
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+ return UBUS_STATUS_NOT_SUPPORTED;
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+
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+ return 0;
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+}
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+#endif
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+
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+static const struct ubus_method bss_methods[] = {
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+#ifdef CONFIG_WPS
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+ UBUS_METHOD_NOARG("wps_start", wpas_bss_wps_start),
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+ UBUS_METHOD_NOARG("wps_cancel", wpas_bss_wps_cancel),
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+#endif
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+ UBUS_METHOD_NOARG("get_features", wpas_bss_get_features),
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+};
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+
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+static struct ubus_object_type bss_object_type =
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+ UBUS_OBJECT_TYPE("wpas_bss", bss_methods);
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+
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+void wpas_ubus_add_bss(struct wpa_supplicant *wpa_s)
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+{
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+ struct ubus_object *obj = &wpa_s->ubus.obj;
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+ char *name;
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+ int ret;
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+
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+ if (!wpas_ubus_init())
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+ return;
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+
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+ if (asprintf(&name, "wpa_supplicant.%s", wpa_s->ifname) < 0)
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+ return;
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+
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+ obj->name = name;
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+ obj->type = &bss_object_type;
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+ obj->methods = bss_object_type.methods;
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+ obj->n_methods = bss_object_type.n_methods;
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+ ret = ubus_add_object(ctx, obj);
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+ wpas_ubus_ref_inc();
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+}
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+
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+void wpas_ubus_free_bss(struct wpa_supplicant *wpa_s)
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+{
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+ struct ubus_object *obj = &wpa_s->ubus.obj;
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+ char *name = (char *) obj->name;
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+
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+ if (!ctx)
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+ return;
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+
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+ if (obj->id) {
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+ ubus_remove_object(ctx, obj);
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+ wpas_ubus_ref_dec();
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+ }
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+
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+ free(name);
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+}
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+
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+#ifdef CONFIG_WPS
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+void wpas_ubus_notify(struct wpa_supplicant *wpa_s, const struct wps_credential *cred)
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+{
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+ u16 auth_type;
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+ char *ifname, *encryption, *ssid, *key;
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+ size_t ifname_len;
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+
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+ if (!cred)
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+ return;
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+
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+ auth_type = cred->auth_type;
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+
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+ if (auth_type == (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK))
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+ auth_type = WPS_AUTH_WPA2PSK;
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+
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+ if (auth_type != WPS_AUTH_OPEN &&
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+ auth_type != WPS_AUTH_WPAPSK &&
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+ auth_type != WPS_AUTH_WPA2PSK) {
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+ wpa_printf(MSG_DEBUG, "WPS: Ignored credentials for "
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+ "unsupported authentication type 0x%x",
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+ auth_type);
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+ return;
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+ }
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+
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+ if (auth_type == WPS_AUTH_WPAPSK || auth_type == WPS_AUTH_WPA2PSK) {
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+ if (cred->key_len < 8 || cred->key_len > 2 * PMK_LEN) {
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+ wpa_printf(MSG_ERROR, "WPS: Reject PSK credential with "
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+ "invalid Network Key length %lu",
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+ (unsigned long) cred->key_len);
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+ return;
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+ }
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+ }
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+
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+ blob_buf_init(&b, 0);
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+
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+ ifname_len = strlen(wpa_s->ifname);
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+ ifname = blobmsg_alloc_string_buffer(&b, "ifname", ifname_len + 1);
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+ memcpy(ifname, wpa_s->ifname, ifname_len + 1);
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+ ifname[ifname_len] = '\0';
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+ blobmsg_add_string_buffer(&b);
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+
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+ switch (auth_type) {
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+ case WPS_AUTH_WPA2PSK:
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+ encryption = "psk2";
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+ break;
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+ case WPS_AUTH_WPAPSK:
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+ encryption = "psk";
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+ break;
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+ default:
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+ encryption = "none";
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+ break;
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+ }
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+
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+ blobmsg_add_string(&b, "encryption", encryption);
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+
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+ ssid = blobmsg_alloc_string_buffer(&b, "ssid", cred->ssid_len + 1);
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+ memcpy(ssid, cred->ssid, cred->ssid_len);
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+ ssid[cred->ssid_len] = '\0';
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+ blobmsg_add_string_buffer(&b);
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+
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+ if (cred->key_len > 0) {
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+ key = blobmsg_alloc_string_buffer(&b, "key", cred->key_len + 1);
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+ memcpy(key, cred->key, cred->key_len);
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+ key[cred->key_len] = '\0';
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+ blobmsg_add_string_buffer(&b);
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+ }
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+
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+// ubus_notify(ctx, &wpa_s->ubus.obj, "wps_credentials", b.head, -1);
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+ ubus_send_event(ctx, "wps_credentials", b.head);
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+}
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+#endif /* CONFIG_WPS */
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Daniel Golle