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openwrt/package/network/services/hostapd/patches/700-ubus_support.patch

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--- a/hostapd/Makefile
+++ b/hostapd/Makefile
@@ -97,6 +97,11 @@ OBJS += ../src/common/wpa_common.o
OBJS += ../src/eapol_auth/eapol_auth_sm.o
+ifdef CONFIG_UBUS
+CFLAGS += -DUBUS_SUPPORT
+OBJS += ../src/ap/ubus.o
+LIBS += -lubox -lubus
+endif
ifndef CONFIG_NO_DUMP_STATE
# define HOSTAPD_DUMP_STATE to include SIGUSR1 handler for dumping state to
--- a/src/ap/hostapd.h
+++ b/src/ap/hostapd.h
@@ -11,6 +11,7 @@
#include "common/defs.h"
#include "ap_config.h"
+#include "ubus.h"
struct wpa_driver_ops;
struct wpa_ctrl_dst;
@@ -75,6 +76,7 @@ struct hostapd_data {
struct hostapd_iface *iface;
struct hostapd_config *iconf;
struct hostapd_bss_config *conf;
+ struct hostapd_ubus_bss ubus;
int interface_added; /* virtual interface added for this BSS */
u8 own_addr[ETH_ALEN];
@@ -216,6 +218,7 @@ struct hostapd_iface {
void *owner;
char *config_fname;
struct hostapd_config *conf;
+ struct hostapd_ubus_iface ubus;
size_t num_bss;
struct hostapd_data **bss;
--- /dev/null
+++ b/src/ap/ubus.c
@@ -0,0 +1,356 @@
+/*
+ * hostapd / ubus support
+ * Copyright (c) 2013, Felix Fietkau <nbd@openwrt.org>
+ *
+ * This software may be distributed under the terms of the BSD license.
+ * See README for more details.
+ */
+
+#include "utils/includes.h"
+#include "utils/common.h"
+#include "utils/eloop.h"
+#include "common/ieee802_11_defs.h"
+#include "hostapd.h"
+#include "sta_info.h"
+#include "ubus.h"
+
+static struct ubus_context *ctx;
+static struct blob_buf b;
+static int ctx_ref;
+
+struct ubus_banned_client {
+ struct avl_node avl;
+ u8 addr[ETH_ALEN];
+};
+
+static void ubus_receive(int sock, void *eloop_ctx, void *sock_ctx)
+{
+ struct ubus_context *ctx = eloop_ctx;
+ ubus_handle_event(ctx);
+}
+
+static bool hostapd_ubus_init(void)
+{
+ if (ctx)
+ return true;
+
+ ctx = ubus_connect(NULL);
+ if (!ctx)
+ return false;
+
+ eloop_register_read_sock(ctx->sock.fd, ubus_receive, ctx, NULL);
+ return true;
+}
+
+static void hostapd_ubus_ref_inc(void)
+{
+ ctx_ref++;
+}
+
+static void hostapd_ubus_ref_dec(void)
+{
+ ctx_ref--;
+ if (!ctx)
+ return;
+
+ if (ctx_ref)
+ return;
+
+ eloop_unregister_read_sock(ctx->sock.fd);
+ ubus_free(ctx);
+ ctx = NULL;
+}
+
+void hostapd_ubus_add_iface(struct hostapd_iface *iface)
+{
+ if (!hostapd_ubus_init())
+ return;
+}
+
+void hostapd_ubus_free_iface(struct hostapd_iface *iface)
+{
+ if (!ctx)
+ return;
+}
+
+static void
+hostapd_bss_del_ban(void *eloop_data, void *user_ctx)
+{
+ struct ubus_banned_client *ban = eloop_data;
+ struct hostapd_data *hapd = user_ctx;
+
+ avl_delete(&hapd->ubus.banned, &ban->avl);
+ free(ban);
+}
+
+static void
+hostapd_bss_ban_client(struct hostapd_data *hapd, u8 *addr, int time)
+{
+ struct ubus_banned_client *ban;
+
+ if (time < 0)
+ time = 0;
+
+ ban = avl_find_element(&hapd->ubus.banned, addr, ban, avl);
+ if (!ban) {
+ if (!time)
+ return;
+
+ ban = os_zalloc(sizeof(*ban));
+ memcpy(ban->addr, addr, sizeof(ban->addr));
+ ban->avl.key = ban->addr;
+ avl_insert(&hapd->ubus.banned, &ban->avl);
+ } else {
+ eloop_cancel_timeout(hostapd_bss_del_ban, ban, hapd);
+ if (!time) {
+ hostapd_bss_del_ban(ban, hapd);
+ return;
+ }
+ }
+
+ eloop_register_timeout(0, time * 1000, hostapd_bss_del_ban, ban, hapd);
+}
+
+static int
+hostapd_bss_get_clients(struct ubus_context *ctx, struct ubus_object *obj,
+ struct ubus_request_data *req, const char *method,
+ struct blob_attr *msg)
+{
+ struct hostapd_data *hapd = container_of(obj, struct hostapd_data, ubus.obj);
+ struct sta_info *sta;
+ void *list, *c;
+ char mac_buf[20];
+ static const struct {
+ const char *name;
+ uint32_t flag;
+ } sta_flags[] = {
+ { "auth", WLAN_STA_AUTH },
+ { "assoc", WLAN_STA_ASSOC },
+ { "authorized", WLAN_STA_AUTHORIZED },
+ { "preauth", WLAN_STA_PREAUTH },
+ { "wds", WLAN_STA_WDS },
+ { "wmm", WLAN_STA_WMM },
+ { "ht", WLAN_STA_HT },
+ { "vht", WLAN_STA_VHT },
+ { "wps", WLAN_STA_WPS },
+ { "mfp", WLAN_STA_MFP },
+ };
+
+ blob_buf_init(&b, 0);
+ blobmsg_add_u32(&b, "freq", hapd->iface->freq);
+ list = blobmsg_open_table(&b, "clients");
+ for (sta = hapd->sta_list; sta; sta = sta->next) {
+ int i;
+
+ sprintf(mac_buf, MACSTR, MAC2STR(sta->addr));
+ c = blobmsg_open_table(&b, mac_buf);
+ for (i = 0; i < ARRAY_SIZE(sta_flags); i++)
+ blobmsg_add_u8(&b, sta_flags[i].name,
+ !!(sta->flags & sta_flags[i].flag));
+ blobmsg_add_u32(&b, "aid", sta->aid);
+ blobmsg_close_table(&b, c);
+ }
+ blobmsg_close_array(&b, list);
+ ubus_send_reply(ctx, req, b.head);
+
+ return 0;
+}
+
+enum {
+ DEL_CLIENT_ADDR,
+ DEL_CLIENT_REASON,
+ DEL_CLIENT_DEAUTH,
+ DEL_CLIENT_BAN_TIME,
+ __DEL_CLIENT_MAX
+};
+
+static const struct blobmsg_policy del_policy[__DEL_CLIENT_MAX] = {
+ [DEL_CLIENT_ADDR] = { "addr", BLOBMSG_TYPE_STRING },
+ [DEL_CLIENT_REASON] = { "reason", BLOBMSG_TYPE_INT32 },
+ [DEL_CLIENT_DEAUTH] = { "deauth", BLOBMSG_TYPE_INT8 },
+ [DEL_CLIENT_BAN_TIME] = { "ban_time", BLOBMSG_TYPE_INT32 },
+};
+
+static int
+hostapd_bss_del_client(struct ubus_context *ctx, struct ubus_object *obj,
+ struct ubus_request_data *req, const char *method,
+ struct blob_attr *msg)
+{
+ struct blob_attr *tb[__DEL_CLIENT_MAX];
+ struct hostapd_data *hapd = container_of(obj, struct hostapd_data, ubus.obj);
+ struct sta_info *sta;
+ bool deauth = false;
+ int reason;
+ u8 addr[ETH_ALEN];
+
+ blobmsg_parse(del_policy, __DEL_CLIENT_MAX, tb, blob_data(msg), blob_len(msg));
+
+ if (!tb[DEL_CLIENT_ADDR])
+ return UBUS_STATUS_INVALID_ARGUMENT;
+
+ if (hwaddr_aton(blobmsg_data(tb[DEL_CLIENT_ADDR]), addr))
+ return UBUS_STATUS_INVALID_ARGUMENT;
+
+ if (tb[DEL_CLIENT_REASON])
+ reason = blobmsg_get_u32(tb[DEL_CLIENT_REASON]);
+
+ if (tb[DEL_CLIENT_DEAUTH])
+ deauth = blobmsg_get_bool(tb[DEL_CLIENT_DEAUTH]);
+
+ sta = ap_get_sta(hapd, addr);
+ if (sta) {
+ if (deauth) {
+ hostapd_drv_sta_deauth(hapd, addr, reason);
+ ap_sta_deauthenticate(hapd, sta, reason);
+ } else {
+ hostapd_drv_sta_disassoc(hapd, addr, reason);
+ ap_sta_disassociate(hapd, sta, reason);
+ }
+ }
+
+ if (tb[DEL_CLIENT_BAN_TIME])
+ hostapd_bss_ban_client(hapd, addr, blobmsg_get_u32(tb[DEL_CLIENT_BAN_TIME]));
+
+ return 0;
+}
+
+static void
+blobmsg_add_macaddr(struct blob_buf *buf, const char *name, const u8 *addr)
+{
+ char *s;
+
+ s = blobmsg_alloc_string_buffer(buf, name, 20);
+ sprintf(s, MACSTR, MAC2STR(addr));
+ blobmsg_add_string_buffer(buf);
+}
+
+static int
+hostapd_bss_list_bans(struct ubus_context *ctx, struct ubus_object *obj,
+ struct ubus_request_data *req, const char *method,
+ struct blob_attr *msg)
+{
+ struct hostapd_data *hapd = container_of(obj, struct hostapd_data, ubus.obj);
+ struct ubus_banned_client *ban;
+ void *c;
+
+ blob_buf_init(&b, 0);
+ c = blobmsg_open_array(&b, "clients");
+ avl_for_each_element(&hapd->ubus.banned, ban, avl)
+ blobmsg_add_macaddr(&b, NULL, ban->addr);
+ blobmsg_close_array(&b, c);
+ ubus_send_reply(ctx, req, b.head);
+
+ return 0;
+}
+
+static const struct ubus_method bss_methods[] = {
+ UBUS_METHOD_NOARG("get_clients", hostapd_bss_get_clients),
+ UBUS_METHOD("del_client", hostapd_bss_del_client, del_policy),
+ UBUS_METHOD_NOARG("list_bans", hostapd_bss_list_bans),
+};
+
+static struct ubus_object_type bss_object_type =
+ UBUS_OBJECT_TYPE("hostapd_bss", bss_methods);
+
+static int avl_compare_macaddr(const void *k1, const void *k2, void *ptr)
+{
+ return memcmp(k1, k2, ETH_ALEN);
+}
+
+void hostapd_ubus_add_bss(struct hostapd_data *hapd)
+{
+ struct ubus_object *obj = &hapd->ubus.obj;
+ char *name;
+ int ret;
+
+ if (!hostapd_ubus_init())
+ return;
+
+ if (asprintf(&name, "hostapd.%s", hapd->conf->iface) < 0)
+ return;
+
+ avl_init(&hapd->ubus.banned, avl_compare_macaddr, false, NULL);
+ obj->name = name;
+ obj->type = &bss_object_type;
+ obj->methods = bss_object_type.methods;
+ obj->n_methods = bss_object_type.n_methods;
+ ret = ubus_add_object(ctx, obj);
+ hostapd_ubus_ref_inc();
+}
+
+void hostapd_ubus_free_bss(struct hostapd_data *hapd)
+{
+ struct ubus_object *obj = &hapd->ubus.obj;
+ char *name = (char *) obj->name;
+
+ if (!ctx)
+ return;
+
+ if (obj->id) {
+ ubus_remove_object(ctx, obj);
+ hostapd_ubus_ref_dec();
+ }
+
+ free(name);
+}
+
+struct ubus_event_req {
+ struct ubus_notify_request nreq;
+ bool deny;
+};
+
+static void
+ubus_event_cb(struct ubus_notify_request *req, int idx, int ret)
+{
+ struct ubus_event_req *ureq = container_of(req, struct ubus_event_req, nreq);
+
+ if (ret)
+ ureq->deny = true;
+}
+
+int hostapd_ubus_handle_event(struct hostapd_data *hapd, struct hostapd_ubus_request *req)
+{
+ struct ubus_banned_client *ban;
+ const char *types[HOSTAPD_UBUS_TYPE_MAX] = {
+ [HOSTAPD_UBUS_PROBE_REQ] = "probe",
+ [HOSTAPD_UBUS_AUTH_REQ] = "auth",
+ [HOSTAPD_UBUS_ASSOC_REQ] = "assoc",
+ };
+ const char *type = "mgmt";
+ struct ubus_event_req ureq = {};
+ const u8 *addr;
+
+ if (req->mgmt_frame)
+ addr = req->mgmt_frame->sa;
+ else
+ addr = req->addr;
+
+ ban = avl_find_element(&hapd->ubus.banned, addr, ban, avl);
+ if (ban)
+ return -2;
+
+ if (!hapd->ubus.obj.has_subscribers)
+ return 0;
+
+ if (req->type < ARRAY_SIZE(types))
+ type = types[req->type];
+
+ blob_buf_init(&b, 0);
+ blobmsg_add_macaddr(&b, "address", addr);
+ if (req->mgmt_frame)
+ blobmsg_add_macaddr(&b, "target", req->mgmt_frame->da);
+ if (req->frame_info)
+ blobmsg_add_u32(&b, "signal", req->frame_info->ssi_signal);
+ blobmsg_add_u32(&b, "freq", hapd->iface->freq);
+
+ if (ubus_notify_async(ctx, &hapd->ubus.obj, type, b.head, &ureq.nreq))
+ return 0;
+
+ ureq.nreq.status_cb = ubus_event_cb;
+ ubus_complete_request(ctx, &ureq.nreq.req, 100);
+
+ if (ureq.deny)
+ return -1;
+
+ return 0;
+}
--- /dev/null
+++ b/src/ap/ubus.h
@@ -0,0 +1,78 @@
+/*
+ * hostapd / ubus support
+ * Copyright (c) 2013, Felix Fietkau <nbd@openwrt.org>
+ *
+ * This software may be distributed under the terms of the BSD license.
+ * See README for more details.
+ */
+#ifndef __HOSTAPD_UBUS_H
+#define __HOSTAPD_UBUS_H
+
+enum hostapd_ubus_event_type {
+ HOSTAPD_UBUS_PROBE_REQ,
+ HOSTAPD_UBUS_AUTH_REQ,
+ HOSTAPD_UBUS_ASSOC_REQ,
+ HOSTAPD_UBUS_TYPE_MAX
+};
+
+struct hostapd_ubus_request {
+ enum hostapd_ubus_event_type type;
+ const struct ieee80211_mgmt *mgmt_frame;
+ const struct hostapd_frame_info *frame_info;
+ const u8 *addr;
+};
+
+struct hostapd_iface;
+struct hostapd_data;
+
+#ifdef UBUS_SUPPORT
+
+#include <libubox/avl.h>
+#include <libubus.h>
+
+struct hostapd_ubus_iface {
+ struct ubus_object obj;
+};
+
+struct hostapd_ubus_bss {
+ struct ubus_object obj;
+ struct avl_tree banned;
+};
+
+void hostapd_ubus_add_iface(struct hostapd_iface *iface);
+void hostapd_ubus_free_iface(struct hostapd_iface *iface);
+void hostapd_ubus_add_bss(struct hostapd_data *hapd);
+void hostapd_ubus_free_bss(struct hostapd_data *hapd);
+
+int hostapd_ubus_handle_event(struct hostapd_data *hapd, struct hostapd_ubus_request *req);
+
+#else
+
+struct hostapd_ubus_iface {};
+
+struct hostapd_ubus_bss {};
+
+static inline void hostapd_ubus_add_iface(struct hostapd_iface *iface)
+{
+}
+
+static inline void hostapd_ubus_free_iface(struct hostapd_iface *iface)
+{
+}
+
+static inline void hostapd_ubus_add_bss(struct hostapd_data *hapd)
+{
+}
+
+static inline void hostapd_ubus_free_bss(struct hostapd_data *hapd)
+{
+}
+
+static inline int hostapd_ubus_handle_event(struct hostapd_data *hapd, struct hostapd_ubus_request *req)
+{
+ return 0;
+}
+
+#endif
+
+#endif
--- a/src/ap/hostapd.c
+++ b/src/ap/hostapd.c
@@ -265,6 +265,7 @@ static int hostapd_broadcast_wep_set(str
static void hostapd_free_hapd_data(struct hostapd_data *hapd)
{
+ hostapd_ubus_free_bss(hapd);
iapp_deinit(hapd->iapp);
hapd->iapp = NULL;
accounting_deinit(hapd);
@@ -829,6 +830,8 @@ static int hostapd_setup_bss(struct host
if (hapd->driver && hapd->driver->set_operstate)
hapd->driver->set_operstate(hapd->drv_priv, 1);
+ hostapd_ubus_add_bss(hapd);
+
return 0;
}
@@ -979,6 +982,7 @@ int hostapd_setup_interface_complete(str
if (err)
goto error;
+ hostapd_ubus_add_iface(iface);
wpa_printf(MSG_DEBUG, "Completing interface initialization");
if (hapd->iconf->channel) {
iface->freq = hostapd_hw_get_freq(hapd, hapd->iconf->channel);
@@ -1071,6 +1075,7 @@ int hostapd_setup_interface_complete(str
error:
wpa_printf(MSG_ERROR, "Interface initialization failed");
+ hostapd_ubus_free_iface(iface);
eloop_terminate();
return -1;
}
@@ -1169,6 +1174,8 @@ void hostapd_interface_deinit_free(struc
void *drv_priv;
if (iface == NULL)
return;
+
+ hostapd_ubus_free_iface(iface);
driver = iface->bss[0]->driver;
drv_priv = iface->bss[0]->drv_priv;
hostapd_interface_deinit(iface);
--- a/src/ap/ieee802_11.c
+++ b/src/ap/ieee802_11.c
@@ -535,7 +535,8 @@ static void handle_auth_sae(struct hosta
static void handle_auth(struct hostapd_data *hapd,
- const struct ieee80211_mgmt *mgmt, size_t len)
+ const struct ieee80211_mgmt *mgmt, size_t len,
+ struct hostapd_frame_info *fi)
{
u16 auth_alg, auth_transaction, status_code;
u16 resp = WLAN_STATUS_SUCCESS;
@@ -550,6 +551,11 @@ static void handle_auth(struct hostapd_d
size_t resp_ies_len = 0;
char *identity = NULL;
char *radius_cui = NULL;
+ struct hostapd_ubus_request req = {
+ .type = HOSTAPD_UBUS_AUTH_REQ,
+ .mgmt_frame = mgmt,
+ .frame_info = fi,
+ };
if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) {
printf("handle_auth - too short payload (len=%lu)\n",
@@ -633,6 +639,14 @@ static void handle_auth(struct hostapd_d
resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
goto fail;
}
+
+ if (hostapd_ubus_handle_event(hapd, &req)) {
+ wpa_printf(MSG_DEBUG, "Station " MACSTR " rejected by ubus handler.\n",
+ MAC2STR(mgmt->sa));
+ resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
+ goto fail;
+ }
+
if (res == HOSTAPD_ACL_PENDING) {
wpa_printf(MSG_DEBUG, "Authentication frame from " MACSTR
" waiting for an external authentication",
@@ -1220,13 +1234,18 @@ static void send_assoc_resp(struct hosta
static void handle_assoc(struct hostapd_data *hapd,
const struct ieee80211_mgmt *mgmt, size_t len,
- int reassoc)
+ int reassoc, struct hostapd_frame_info *fi)
{
u16 capab_info, listen_interval;
u16 resp = WLAN_STATUS_SUCCESS;
const u8 *pos;
int left, i;
struct sta_info *sta;
+ struct hostapd_ubus_request req = {
+ .type = HOSTAPD_UBUS_ASSOC_REQ,
+ .mgmt_frame = mgmt,
+ .frame_info = fi,
+ };
if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_req) :
sizeof(mgmt->u.assoc_req))) {
@@ -1325,6 +1344,13 @@ static void handle_assoc(struct hostapd_
goto fail;
}
+ if (hostapd_ubus_handle_event(hapd, &req)) {
+ wpa_printf(MSG_DEBUG, "Station " MACSTR " assoc rejected by ubus handler.\n",
+ MAC2STR(mgmt->sa));
+ resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
+ goto fail;
+ }
+
sta->capability = capab_info;
sta->listen_interval = listen_interval;
@@ -1734,7 +1760,7 @@ void ieee802_11_mgmt(struct hostapd_data
if (stype == WLAN_FC_STYPE_PROBE_REQ) {
- handle_probe_req(hapd, mgmt, len, fi->ssi_signal);
+ handle_probe_req(hapd, mgmt, len, fi);
return;
}
@@ -1749,15 +1775,15 @@ void ieee802_11_mgmt(struct hostapd_data
switch (stype) {
case WLAN_FC_STYPE_AUTH:
wpa_printf(MSG_DEBUG, "mgmt::auth");
- handle_auth(hapd, mgmt, len);
+ handle_auth(hapd, mgmt, len, fi);
break;
case WLAN_FC_STYPE_ASSOC_REQ:
wpa_printf(MSG_DEBUG, "mgmt::assoc_req");
- handle_assoc(hapd, mgmt, len, 0);
+ handle_assoc(hapd, mgmt, len, 0, fi);
break;
case WLAN_FC_STYPE_REASSOC_REQ:
wpa_printf(MSG_DEBUG, "mgmt::reassoc_req");
- handle_assoc(hapd, mgmt, len, 1);
+ handle_assoc(hapd, mgmt, len, 1, fi);
break;
case WLAN_FC_STYPE_DISASSOC:
wpa_printf(MSG_DEBUG, "mgmt::disassoc");
--- a/src/ap/beacon.c
+++ b/src/ap/beacon.c
@@ -352,7 +352,7 @@ static enum ssid_match_result ssid_match
void handle_probe_req(struct hostapd_data *hapd,
const struct ieee80211_mgmt *mgmt, size_t len,
- int ssi_signal)
+ struct hostapd_frame_info *fi)
{
u8 *resp;
struct ieee802_11_elems elems;
@@ -360,8 +360,14 @@ void handle_probe_req(struct hostapd_dat
size_t ie_len;
struct sta_info *sta = NULL;
size_t i, resp_len;
+ int ssi_signal = fi->ssi_signal;
int noack;
enum ssid_match_result res;
+ struct hostapd_ubus_request req = {
+ .type = HOSTAPD_UBUS_PROBE_REQ,
+ .mgmt_frame = mgmt,
+ .frame_info = fi,
+ };
ie = mgmt->u.probe_req.variable;
if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.probe_req))
@@ -500,6 +506,12 @@ void handle_probe_req(struct hostapd_dat
}
#endif /* CONFIG_P2P */
+ if (hostapd_ubus_handle_event(hapd, &req)) {
+ wpa_printf(MSG_DEBUG, "Probe request for " MACSTR " rejected by ubus handler.\n",
+ MAC2STR(mgmt->sa));
+ return;
+ }
+
/* TODO: verify that supp_rates contains at least one matching rate
* with AP configuration */
--- a/src/ap/beacon.h
+++ b/src/ap/beacon.h
@@ -20,7 +20,7 @@ struct ieee80211_mgmt;
void handle_probe_req(struct hostapd_data *hapd,
const struct ieee80211_mgmt *mgmt, size_t len,
- int ssi_signal);
+ struct hostapd_frame_info *fi);
void ieee802_11_set_beacon(struct hostapd_data *hapd);
void ieee802_11_set_beacons(struct hostapd_iface *iface);
void ieee802_11_update_beacons(struct hostapd_iface *iface);
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