Preparations for 0.6.7 release
[wpasupplicant] / hostapd / hostapd.c
index 9f6b168..8f2ec4c 100644 (file)
@@ -1,6 +1,6 @@
 /*
  * hostapd / Initialization and configuration
- * Copyright (c) 2002-2008, Jouni Malinen <j@w1.fi>
+ * Copyright (c) 2002-2009, Jouni Malinen <j@w1.fi>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
 #include "eap_server/tncs.h"
 #include "version.h"
 #include "l2_packet/l2_packet.h"
+#include "wps_hostapd.h"
 
 
 static int hostapd_radius_get_eap_user(void *ctx, const u8 *identity,
                                       size_t identity_len, int phase2,
                                       struct eap_user *user);
+static int hostapd_flush_old_stations(struct hostapd_data *hapd);
+static int hostapd_setup_wpa(struct hostapd_data *hapd);
+static int hostapd_setup_encryption(char *iface, struct hostapd_data *hapd);
 
 struct hapd_interfaces {
        size_t count;
@@ -250,7 +254,8 @@ void hostapd_new_assoc_sta(struct hostapd_data *hapd, struct sta_info *sta,
        /* Start IEEE 802.1X authentication process for new stations */
        ieee802_1x_new_station(hapd, sta);
        if (reassoc) {
-               if (sta->auth_alg != WLAN_AUTH_FT)
+               if (sta->auth_alg != WLAN_AUTH_FT &&
+                   !(sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS)))
                        wpa_auth_sm_event(sta->wpa_sm, WPA_REAUTH);
        } else
                wpa_auth_sta_associated(hapd->wpa_auth, sta->wpa_sm);
@@ -326,41 +331,72 @@ static void hostapd_wpa_auth_conf(struct hostapd_bss_config *conf,
 }
 
 
+int hostapd_reload_config(struct hostapd_iface *iface)
+{
+       struct hostapd_data *hapd = iface->bss[0];
+       struct hostapd_config *newconf, *oldconf;
+       struct wpa_auth_config wpa_auth_conf;
+
+       newconf = hostapd_config_read(iface->config_fname);
+       if (newconf == NULL)
+               return -1;
+
+       /*
+        * Deauthenticate all stations since the new configuration may not
+        * allow them to use the BSS anymore.
+        */
+       hostapd_flush_old_stations(hapd);
+
+       /* TODO: update dynamic data based on changed configuration
+        * items (e.g., open/close sockets, etc.) */
+       radius_client_flush(hapd->radius, 0);
+
+       oldconf = hapd->iconf;
+       hapd->iconf = newconf;
+       hapd->conf = &newconf->bss[0];
+       iface->conf = newconf;
+
+       if (hostapd_setup_wpa_psk(hapd->conf)) {
+               wpa_printf(MSG_ERROR, "Failed to re-configure WPA PSK "
+                          "after reloading configuration");
+       }
+
+       if (hapd->conf->wpa && hapd->wpa_auth == NULL)
+               hostapd_setup_wpa(hapd);
+       else if (hapd->conf->wpa) {
+               hostapd_wpa_auth_conf(&newconf->bss[0], &wpa_auth_conf);
+               wpa_reconfig(hapd->wpa_auth, &wpa_auth_conf);
+       } else if (hapd->wpa_auth) {
+               wpa_deinit(hapd->wpa_auth);
+               hapd->wpa_auth = NULL;
+               hostapd_set_privacy(hapd, 0);
+               hostapd_setup_encryption(hapd->conf->iface, hapd);
+       }
+
+       ieee802_11_set_beacon(hapd);
+
+       hostapd_config_free(oldconf);
+
+       wpa_printf(MSG_DEBUG, "Reconfigured interface %s", hapd->conf->iface);
+
+       return 0;
+}
+
+
 #ifndef CONFIG_NATIVE_WINDOWS
 static void handle_reload(int sig, void *eloop_ctx, void *signal_ctx)
 {
        struct hapd_interfaces *hapds = (struct hapd_interfaces *) eloop_ctx;
-       struct hostapd_config *newconf;
        size_t i;
-       struct wpa_auth_config wpa_auth_conf;
 
        printf("Signal %d received - reloading configuration\n", sig);
 
        for (i = 0; i < hapds->count; i++) {
-               struct hostapd_data *hapd = hapds->iface[i]->bss[0];
-               newconf = hostapd_config_read(hapds->iface[i]->config_fname);
-               if (newconf == NULL) {
+               if (hostapd_reload_config(hapds->iface[i]) < 0) {
                        printf("Failed to read new configuration file - "
                               "continuing with old.\n");
                        continue;
                }
-               /* TODO: update dynamic data based on changed configuration
-                * items (e.g., open/close sockets, remove stations added to
-                * deny list, etc.) */
-               radius_client_flush(hapd->radius, 0);
-               hostapd_config_free(hapd->iconf);
-
-               hostapd_wpa_auth_conf(&newconf->bss[0], &wpa_auth_conf);
-               wpa_reconfig(hapd->wpa_auth, &wpa_auth_conf);
-
-               hapd->iconf = newconf;
-               hapd->conf = &newconf->bss[0];
-               hapds->iface[i]->conf = newconf;
-
-               if (hostapd_setup_wpa_psk(hapd->conf)) {
-                       wpa_printf(MSG_ERROR, "Failed to re-configure WPA PSK "
-                                  "after reloading configuration");
-               }
        }
 }
 
@@ -400,7 +436,7 @@ static void hostapd_dump_state(struct hostapd_data *hapd)
                fprintf(f, "\nSTA=" MACSTR "\n", MAC2STR(sta->addr));
 
                fprintf(f,
-                       "  AID=%d flags=0x%x %s%s%s%s%s%s%s%s%s%s%s%s\n"
+                       "  AID=%d flags=0x%x %s%s%s%s%s%s%s%s%s%s%s%s%s%s\n"
                        "  capability=0x%x listen_interval=%d\n",
                        sta->aid,
                        sta->flags,
@@ -418,6 +454,8 @@ static void hostapd_dump_state(struct hostapd_data *hapd)
                        (sta->flags & WLAN_STA_PREAUTH ? "[PREAUTH]" : ""),
                        (sta->flags & WLAN_STA_WME ? "[WME]" : ""),
                        (sta->flags & WLAN_STA_MFP ? "[MFP]" : ""),
+                       (sta->flags & WLAN_STA_WPS ? "[WPS]" : ""),
+                       (sta->flags & WLAN_STA_MAYBE_WPS ? "[MAYBE_WPS]" : ""),
                        (sta->flags & WLAN_STA_NONERP ? "[NonERP]" : ""),
                        sta->capability,
                        sta->listen_interval);
@@ -487,6 +525,19 @@ static void hostapd_broadcast_key_clear_iface(struct hostapd_data *hapd,
                               "(ifname=%s keyidx=%d)\n", ifname, i);
                }
        }
+#ifdef CONFIG_IEEE80211W
+       if (hapd->conf->ieee80211w) {
+               for (i = NUM_WEP_KEYS; i < NUM_WEP_KEYS + 2; i++) {
+                       if (hostapd_set_encryption(ifname, hapd, "none", NULL,
+                                                  i, NULL, 0,
+                                                  i == 0 ? 1 : 0)) {
+                               printf("Failed to clear default mgmt "
+                                      "encryption keys (ifname=%s keyidx=%d)"
+                                      "\n", ifname, i);
+                       }
+               }
+       }
+#endif /* CONFIG_IEEE80211W */
 }
 
 
@@ -588,6 +639,8 @@ static void hostapd_cleanup(struct hostapd_data *hapd)
        l2_packet_deinit(hapd->l2);
 #endif /* CONFIG_IEEE80211R */
 
+       hostapd_deinit_wps(hapd);
+
        hostapd_wireless_event_deinit(hapd);
 
 #ifdef EAP_TLS_FUNCS
@@ -1178,8 +1231,11 @@ static int hostapd_setup_radius_srv(struct hostapd_data *hapd,
        srv.pac_key_refresh_time = conf->pac_key_refresh_time;
        srv.eap_sim_aka_result_ind = conf->eap_sim_aka_result_ind;
        srv.tnc = conf->tnc;
+       srv.wps = hapd->wps;
        srv.ipv6 = conf->radius_server_ipv6;
        srv.get_eap_user = hostapd_radius_get_eap_user;
+       srv.eap_req_id_text = conf->eap_req_id_text;
+       srv.eap_req_id_text_len = conf->eap_req_id_text_len;
 
        hapd->radius_srv = radius_server_init(&srv);
        if (hapd->radius_srv == NULL) {
@@ -1310,6 +1366,8 @@ static int hostapd_setup_bss(struct hostapd_data *hapd, int first)
                printf("ACL initialization failed.\n");
                return -1;
        }
+       if (hostapd_init_wps(hapd, conf))
+               return -1;
 
        if (ieee802_1x_init(hapd)) {
                printf("IEEE 802.1X initialization failed.\n");
@@ -1385,145 +1443,6 @@ static void hostapd_tx_queue_params(struct hostapd_iface *iface)
 }
 
 
-/**
- * setup_interface2 - Setup (initialize) an interface (part 2)
- * @iface: Pointer to interface data.
- * Returns: 0 on success; -1 on failure.
- *
- * Flushes old stations, sets the channel, DFS parameters, encryption,
- * beacons, and WDS links based on the configuration.
- */
-static int setup_interface2(struct hostapd_iface *iface)
-{
-       struct hostapd_data *hapd = iface->bss[0];
-       int freq;
-       size_t j;
-       int ret = 0;
-       u8 *prev_addr;
-
-       hostapd_flush_old_stations(hapd);
-       hostapd_set_privacy(hapd, 0);
-
-       if (hapd->iconf->channel) {
-               freq = hostapd_hw_get_freq(hapd, hapd->iconf->channel);
-               printf("Mode: %s  Channel: %d  Frequency: %d MHz\n",
-                      hostapd_hw_mode_txt(hapd->iconf->hw_mode),
-                      hapd->iconf->channel, freq);
-
-               if (hostapd_set_freq(hapd, hapd->iconf->hw_mode, freq)) {
-                       printf("Could not set channel for kernel driver\n");
-                       return -1;
-               }
-       }
-
-       hostapd_broadcast_wep_clear(hapd);
-       if (hostapd_setup_encryption(hapd->conf->iface, hapd))
-               return -1;
-
-       hostapd_set_beacon_int(hapd, hapd->iconf->beacon_int);
-       ieee802_11_set_beacon(hapd);
-
-       if (hapd->iconf->rts_threshold > -1 &&
-           hostapd_set_rts(hapd, hapd->iconf->rts_threshold)) {
-               printf("Could not set RTS threshold for kernel driver\n");
-               return -1;
-       }
-
-       if (hapd->iconf->fragm_threshold > -1 &&
-           hostapd_set_frag(hapd, hapd->iconf->fragm_threshold)) {
-               printf("Could not set fragmentation threshold for kernel "
-                      "driver\n");
-               return -1;
-       }
-
-       prev_addr = hapd->own_addr;
-
-       for (j = 0; j < iface->num_bss; j++) {
-               hapd = iface->bss[j];
-               if (j)
-                       os_memcpy(hapd->own_addr, prev_addr, ETH_ALEN);
-               if (hostapd_setup_bss(hapd, j == 0))
-                       return -1;
-               if (hostapd_mac_comp_empty(hapd->conf->bssid) == 0)
-                       prev_addr = hapd->own_addr;
-       }
-
-       hostapd_tx_queue_params(iface);
-
-       ap_list_init(iface);
-
-       if (hostapd_driver_commit(hapd) < 0) {
-               wpa_printf(MSG_ERROR, "%s: Failed to commit driver "
-                          "configuration", __func__);
-               return -1;
-       }
-
-       return ret;
-}
-
-
-static void setup_interface_start(void *eloop_data, void *user_ctx);
-static void setup_interface2_handler(void *eloop_data, void *user_ctx);
-
-/**
- * setup_interface_finalize - Finish setup interface & call the callback
- * @iface: Pointer to interface data.
- * @status: Status of the setup interface (0 on success; -1 on failure).
- * Returns: 0 on success; -1 on failure (e.g., was not in progress).
- */
-static int setup_interface_finalize(struct hostapd_iface *iface, int status)
-{
-       hostapd_iface_cb cb;
-
-       if (!iface->setup_cb)
-               return -1;
-       
-       eloop_cancel_timeout(setup_interface_start, iface, NULL);
-       eloop_cancel_timeout(setup_interface2_handler, iface, NULL);
-       hostapd_select_hw_mode_stop(iface);
-
-       cb = iface->setup_cb;
-
-       iface->setup_cb = NULL;
-
-       cb(iface, status);
-
-       return 0;
-}
-
-
-/**
- * setup_interface2_wrapper - Wrapper for setup_interface2()
- * @iface: Pointer to interface data.
- * @status: Status of the hw mode select.
- *
- * Wrapper for setup_interface2() to calls finalize function upon completion.
- */
-static void setup_interface2_wrapper(struct hostapd_iface *iface, int status)
-{
-       int ret = status;
-       if (ret)
-               printf("Could not select hw_mode and channel. (%d)\n", ret);
-       else
-               ret = setup_interface2(iface);
-
-       setup_interface_finalize(iface, ret);
-}
-
-
-/**
- * setup_interface2_handler - Used for immediate call of setup_interface2
- * @eloop_data: Stores the struct hostapd_iface * for the interface.
- * @user_ctx: Unused.
- */
-static void setup_interface2_handler(void *eloop_data, void *user_ctx)
-{
-       struct hostapd_iface *iface = eloop_data;
-
-       setup_interface2_wrapper(iface, 0);
-}
-
-
 static int hostapd_radius_get_eap_user(void *ctx, const u8 *identity,
                                       size_t identity_len, int phase2,
                                       struct eap_user *user)
@@ -1563,23 +1482,17 @@ static int hostapd_radius_get_eap_user(void *ctx, const u8 *identity,
 }
 
 
-/**
- * setup_interface1 - Setup (initialize) an interface (part 1)
- * @iface: Pointer to interface data
- * Returns: 0 on success, -1 on failure
- *
- * Initializes the driver interface, validates the configuration,
- * and sets driver parameters based on the configuration.
- * Schedules setup_interface2() to be called immediately or after
- * hardware mode setup takes place. 
- */
-static int setup_interface1(struct hostapd_iface *iface)
+static int setup_interface(struct hostapd_iface *iface)
 {
        struct hostapd_data *hapd = iface->bss[0];
        struct hostapd_bss_config *conf = hapd->conf;
        size_t i;
        char country[4];
        u8 *b = conf->bssid;
+       int freq;
+       size_t j;
+       int ret = 0;
+       u8 *prev_addr;
 
        /*
         * Initialize the driver interface and make sure that all BSSes get
@@ -1639,84 +1552,113 @@ static int setup_interface1(struct hostapd_iface *iface)
                /* Not all drivers support this yet, so continue without hw
                 * feature data. */
        } else {
-               return hostapd_select_hw_mode_start(iface,
-                                                   setup_interface2_wrapper);
+               int ret = hostapd_select_hw_mode(iface);
+               if (ret < 0) {
+                       printf("Could not select hw_mode and channel. (%d)\n",
+                              ret);
+                       return -1;
+               }
        }
 
-       eloop_register_timeout(0, 0, setup_interface2_handler, iface, NULL);
-       return 0;
-}
+       hostapd_flush_old_stations(hapd);
+       hostapd_set_privacy(hapd, 0);
 
+       if (hapd->iconf->channel) {
+               freq = hostapd_hw_get_freq(hapd, hapd->iconf->channel);
+               printf("Mode: %s  Channel: %d  Frequency: %d MHz\n",
+                      hostapd_hw_mode_txt(hapd->iconf->hw_mode),
+                      hapd->iconf->channel, freq);
 
-/**
- * setup_interface_start - Handler to start setup interface
- * @eloop_data: Stores the struct hostapd_iface * for the interface.
- * @user_ctx: Unused.
- *
- * An eloop handler is used so that all errors can be processed by the
- * callback without introducing stack recursion.
- */
-static void setup_interface_start(void *eloop_data, void *user_ctx)
-{
-       struct hostapd_iface *iface = eloop_data;
+               if (hostapd_set_freq(hapd, hapd->iconf->hw_mode, freq,
+                                    hapd->iconf->ieee80211n,
+                                    hapd->iconf->secondary_channel)) {
+                       printf("Could not set channel for kernel driver\n");
+                       return -1;
+               }
+       }
 
-       int ret;
+       hostapd_broadcast_wep_clear(hapd);
+       if (hostapd_setup_encryption(hapd->conf->iface, hapd))
+               return -1;
+
+       hostapd_set_beacon_int(hapd, hapd->iconf->beacon_int);
+       ieee802_11_set_beacon(hapd);
+
+       if (hapd->iconf->rts_threshold > -1 &&
+           hostapd_set_rts(hapd, hapd->iconf->rts_threshold)) {
+               printf("Could not set RTS threshold for kernel driver\n");
+               return -1;
+       }
+
+       if (hapd->iconf->fragm_threshold > -1 &&
+           hostapd_set_frag(hapd, hapd->iconf->fragm_threshold)) {
+               printf("Could not set fragmentation threshold for kernel "
+                      "driver\n");
+               return -1;
+       }
+
+       prev_addr = hapd->own_addr;
+
+       for (j = 0; j < iface->num_bss; j++) {
+               hapd = iface->bss[j];
+               if (j)
+                       os_memcpy(hapd->own_addr, prev_addr, ETH_ALEN);
+               if (hostapd_setup_bss(hapd, j == 0))
+                       return -1;
+               if (hostapd_mac_comp_empty(hapd->conf->bssid) == 0)
+                       prev_addr = hapd->own_addr;
+       }
+
+       hostapd_tx_queue_params(iface);
+
+       ap_list_init(iface);
+
+       if (hostapd_driver_commit(hapd) < 0) {
+               wpa_printf(MSG_ERROR, "%s: Failed to commit driver "
+                          "configuration", __func__);
+               return -1;
+       }
 
-       ret = setup_interface1(iface);
-       if (ret)
-               setup_interface_finalize(iface, ret);
+       return ret;
 }
 
 
 /**
- * hostapd_setup_interface_start - Start the setup of an interface
+ * hostapd_setup_interface - Setup of an interface
  * @iface: Pointer to interface data.
- * @cb: The function to callback when done.
- * Returns:  0 if it starts successfully; cb will be called when done.
- *          -1 on failure; cb will not be called.
+ * Returns: 0 on success, -1 on failure
  *
  * Initializes the driver interface, validates the configuration,
  * and sets driver parameters based on the configuration.
- * Flushes old stations, sets the channel, DFS parameters, encryption,
+ * Flushes old stations, sets the channel, encryption,
  * beacons, and WDS links based on the configuration.
  */
-int hostapd_setup_interface_start(struct hostapd_iface *iface,
-                                 hostapd_iface_cb cb)
+static int hostapd_setup_interface(struct hostapd_iface *iface)
 {
-       if (iface->setup_cb) {
-               wpa_printf(MSG_DEBUG,
-                          "%s: Interface setup already in progress.\n",
+       int ret;
+
+       ret = setup_interface(iface);
+       if (ret) {
+               wpa_printf(MSG_DEBUG, "%s: Unable to setup interface.",
                           iface->bss[0]->conf->iface);
+               eloop_terminate();
                return -1;
+       } else if (!hostapd_drv_none(iface->bss[0])) {
+               wpa_printf(MSG_DEBUG, "%s: Setup of interface done.",
+                          iface->bss[0]->conf->iface);
        }
 
-       iface->setup_cb = cb;
-
-       eloop_register_timeout(0, 0, setup_interface_start, iface, NULL);
-
        return 0;
 }
 
 
-/**
- * hostapd_setup_interace_stop - Stops the setup of an interface
- * @iface: Pointer to interface data
- * Returns:  0 if successfully stopped;
- *          -1 on failure (i.e., was not in progress)
- */
-int hostapd_setup_interface_stop(struct hostapd_iface *iface)
-{
-       return setup_interface_finalize(iface, -1);
-}
-
-
 static void show_version(void)
 {
        fprintf(stderr,
                "hostapd v" VERSION_STR "\n"
                "User space daemon for IEEE 802.11 AP management,\n"
                "IEEE 802.1X/WPA/WPA2/EAP/RADIUS Authenticator\n"
-               "Copyright (c) 2002-2008, Jouni Malinen <j@w1.fi> "
+               "Copyright (c) 2002-2009, Jouni Malinen <j@w1.fi> "
                "and contributors\n");
 }
 
@@ -1818,9 +1760,6 @@ hostapd_alloc_bss_data(struct hostapd_iface *hapd_iface,
        }
 #endif /* EAP_SERVER */
 
-       if (hapd->conf->assoc_ap)
-               hapd->assoc_ap_state = WAIT_BEACON;
-
        hapd->driver = hapd->iconf->driver;
 
        return hapd;
@@ -1897,32 +1836,6 @@ fail:
 }
 
 
-/**
- * register_drivers - Register driver interfaces
- *
- * This function is generated by Makefile (into driver_conf.c) to call all
- * configured driver interfaces to register them to core hostapd.
- */
-void register_drivers(void);
-
-
-/**
- * setup_interface_done - Callback when an interface is done being setup.
- * @iface: Pointer to interface data.
- * @status: Status of the interface setup (0 on success; -1 on failure).
- */
-static void setup_interface_done(struct hostapd_iface *iface, int status)
-{
-       if (status) {
-               wpa_printf(MSG_DEBUG, "%s: Unable to setup interface.",
-                          iface->bss[0]->conf->iface);
-               eloop_terminate();
-       } else if (!hostapd_drv_none(iface->bss[0]))
-               wpa_printf(MSG_DEBUG, "%s: Setup of interface done.",
-                          iface->bss[0]->conf->iface);
-}
-
-
 int main(int argc, char *argv[])
 {
        struct hapd_interfaces interfaces;
@@ -2010,8 +1923,7 @@ int main(int argc, char *argv[])
                                        logger_stdout_level--;
                }
 
-               ret = hostapd_setup_interface_start(interfaces.iface[i],
-                                                   setup_interface_done);
+               ret = hostapd_setup_interface(interfaces.iface[i]);
                if (ret)
                        goto out;
 
@@ -2056,7 +1968,6 @@ int main(int argc, char *argv[])
        for (i = 0; i < interfaces.count; i++) {
                if (!interfaces.iface[i])
                        continue;
-               hostapd_setup_interface_stop(interfaces.iface[i]);
                hostapd_cleanup_iface_pre(interfaces.iface[i]);
                for (j = 0; j < interfaces.iface[i]->num_bss; j++) {
                        struct hostapd_data *hapd =