wpa_supplicant: Initial Revision 0.8.X
Based on:
commit 0725cc7b7efc434910e89865c42eda7ce61bbf08
Author: Jouni Malinen <j@w1.fi>
Date: Thu Apr 21 20:41:01 2011 +0300
Enable CONFIG_DRIVER_NL80211=y in the default configuration
nl80211 should be preferred over WEXT with any recent Linux
kernel version.
Change-Id: I26aec5afbbd4f4a1f5fd900912545b6f5050de64
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
diff --git a/src/ap/ap_config.c b/src/ap/ap_config.c
new file mode 100644
index 0000000..e77716b
--- /dev/null
+++ b/src/ap/ap_config.c
@@ -0,0 +1,627 @@
+/*
+ * hostapd / Configuration helper functions
+ * Copyright (c) 2003-2009, 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
+ * published by the Free Software Foundation.
+ *
+ * Alternatively, this software may be distributed under the terms of BSD
+ * license.
+ *
+ * See README and COPYING for more details.
+ */
+
+#include "utils/includes.h"
+
+#include "utils/common.h"
+#include "crypto/sha1.h"
+#include "radius/radius_client.h"
+#include "common/ieee802_11_defs.h"
+#include "common/eapol_common.h"
+#include "eap_common/eap_wsc_common.h"
+#include "eap_server/eap.h"
+#include "wpa_auth.h"
+#include "sta_info.h"
+#include "ap_config.h"
+
+
+static void hostapd_config_free_vlan(struct hostapd_bss_config *bss)
+{
+ struct hostapd_vlan *vlan, *prev;
+
+ vlan = bss->vlan;
+ prev = NULL;
+ while (vlan) {
+ prev = vlan;
+ vlan = vlan->next;
+ os_free(prev);
+ }
+
+ bss->vlan = NULL;
+}
+
+
+void hostapd_config_defaults_bss(struct hostapd_bss_config *bss)
+{
+ bss->logger_syslog_level = HOSTAPD_LEVEL_INFO;
+ bss->logger_stdout_level = HOSTAPD_LEVEL_INFO;
+ bss->logger_syslog = (unsigned int) -1;
+ bss->logger_stdout = (unsigned int) -1;
+
+ bss->auth_algs = WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED;
+
+ bss->wep_rekeying_period = 300;
+ /* use key0 in individual key and key1 in broadcast key */
+ bss->broadcast_key_idx_min = 1;
+ bss->broadcast_key_idx_max = 2;
+ bss->eap_reauth_period = 3600;
+
+ bss->wpa_group_rekey = 600;
+ bss->wpa_gmk_rekey = 86400;
+ bss->wpa_key_mgmt = WPA_KEY_MGMT_PSK;
+ bss->wpa_pairwise = WPA_CIPHER_TKIP;
+ bss->wpa_group = WPA_CIPHER_TKIP;
+ bss->rsn_pairwise = 0;
+
+ bss->max_num_sta = MAX_STA_COUNT;
+
+ bss->dtim_period = 2;
+
+ bss->radius_server_auth_port = 1812;
+ bss->ap_max_inactivity = AP_MAX_INACTIVITY;
+ bss->eapol_version = EAPOL_VERSION;
+
+ bss->max_listen_interval = 65535;
+
+ bss->pwd_group = 19; /* ECC: GF(p=256) */
+
+#ifdef CONFIG_IEEE80211W
+ bss->assoc_sa_query_max_timeout = 1000;
+ bss->assoc_sa_query_retry_timeout = 201;
+#endif /* CONFIG_IEEE80211W */
+#ifdef EAP_SERVER_FAST
+ /* both anonymous and authenticated provisioning */
+ bss->eap_fast_prov = 3;
+ bss->pac_key_lifetime = 7 * 24 * 60 * 60;
+ bss->pac_key_refresh_time = 1 * 24 * 60 * 60;
+#endif /* EAP_SERVER_FAST */
+
+ /* Set to -1 as defaults depends on HT in setup */
+ bss->wmm_enabled = -1;
+
+#ifdef CONFIG_IEEE80211R
+ bss->ft_over_ds = 1;
+#endif /* CONFIG_IEEE80211R */
+}
+
+
+struct hostapd_config * hostapd_config_defaults(void)
+{
+#define ecw2cw(ecw) ((1 << (ecw)) - 1)
+
+ struct hostapd_config *conf;
+ struct hostapd_bss_config *bss;
+ const int aCWmin = 4, aCWmax = 10;
+ const struct hostapd_wmm_ac_params ac_bk =
+ { aCWmin, aCWmax, 7, 0, 0 }; /* background traffic */
+ const struct hostapd_wmm_ac_params ac_be =
+ { aCWmin, aCWmax, 3, 0, 0 }; /* best effort traffic */
+ const struct hostapd_wmm_ac_params ac_vi = /* video traffic */
+ { aCWmin - 1, aCWmin, 2, 3000 / 32, 1 };
+ const struct hostapd_wmm_ac_params ac_vo = /* voice traffic */
+ { aCWmin - 2, aCWmin - 1, 2, 1500 / 32, 1 };
+ const struct hostapd_tx_queue_params txq_bk =
+ { 7, ecw2cw(aCWmin), ecw2cw(aCWmax), 0 };
+ const struct hostapd_tx_queue_params txq_be =
+ { 3, ecw2cw(aCWmin), 4 * (ecw2cw(aCWmin) + 1) - 1, 0};
+ const struct hostapd_tx_queue_params txq_vi =
+ { 1, (ecw2cw(aCWmin) + 1) / 2 - 1, ecw2cw(aCWmin), 30};
+ const struct hostapd_tx_queue_params txq_vo =
+ { 1, (ecw2cw(aCWmin) + 1) / 4 - 1,
+ (ecw2cw(aCWmin) + 1) / 2 - 1, 15};
+
+#undef ecw2cw
+
+ conf = os_zalloc(sizeof(*conf));
+ bss = os_zalloc(sizeof(*bss));
+ if (conf == NULL || bss == NULL) {
+ wpa_printf(MSG_ERROR, "Failed to allocate memory for "
+ "configuration data.");
+ os_free(conf);
+ os_free(bss);
+ return NULL;
+ }
+
+ bss->radius = os_zalloc(sizeof(*bss->radius));
+ if (bss->radius == NULL) {
+ os_free(conf);
+ os_free(bss);
+ return NULL;
+ }
+
+ hostapd_config_defaults_bss(bss);
+
+ conf->num_bss = 1;
+ conf->bss = bss;
+
+ conf->beacon_int = 100;
+ conf->rts_threshold = -1; /* use driver default: 2347 */
+ conf->fragm_threshold = -1; /* user driver default: 2346 */
+ conf->send_probe_response = 1;
+
+ conf->wmm_ac_params[0] = ac_be;
+ conf->wmm_ac_params[1] = ac_bk;
+ conf->wmm_ac_params[2] = ac_vi;
+ conf->wmm_ac_params[3] = ac_vo;
+
+ conf->tx_queue[0] = txq_vo;
+ conf->tx_queue[1] = txq_vi;
+ conf->tx_queue[2] = txq_be;
+ conf->tx_queue[3] = txq_bk;
+
+ conf->ht_capab = HT_CAP_INFO_SMPS_DISABLED;
+
+ return conf;
+}
+
+
+int hostapd_mac_comp(const void *a, const void *b)
+{
+ return os_memcmp(a, b, sizeof(macaddr));
+}
+
+
+int hostapd_mac_comp_empty(const void *a)
+{
+ macaddr empty = { 0 };
+ return os_memcmp(a, empty, sizeof(macaddr));
+}
+
+
+static int hostapd_config_read_wpa_psk(const char *fname,
+ struct hostapd_ssid *ssid)
+{
+ FILE *f;
+ char buf[128], *pos;
+ int line = 0, ret = 0, len, ok;
+ u8 addr[ETH_ALEN];
+ struct hostapd_wpa_psk *psk;
+
+ if (!fname)
+ return 0;
+
+ f = fopen(fname, "r");
+ if (!f) {
+ wpa_printf(MSG_ERROR, "WPA PSK file '%s' not found.", fname);
+ return -1;
+ }
+
+ while (fgets(buf, sizeof(buf), f)) {
+ line++;
+
+ if (buf[0] == '#')
+ continue;
+ pos = buf;
+ while (*pos != '\0') {
+ if (*pos == '\n') {
+ *pos = '\0';
+ break;
+ }
+ pos++;
+ }
+ if (buf[0] == '\0')
+ continue;
+
+ if (hwaddr_aton(buf, addr)) {
+ wpa_printf(MSG_ERROR, "Invalid MAC address '%s' on "
+ "line %d in '%s'", buf, line, fname);
+ ret = -1;
+ break;
+ }
+
+ psk = os_zalloc(sizeof(*psk));
+ if (psk == NULL) {
+ wpa_printf(MSG_ERROR, "WPA PSK allocation failed");
+ ret = -1;
+ break;
+ }
+ if (is_zero_ether_addr(addr))
+ psk->group = 1;
+ else
+ os_memcpy(psk->addr, addr, ETH_ALEN);
+
+ pos = buf + 17;
+ if (*pos == '\0') {
+ wpa_printf(MSG_ERROR, "No PSK on line %d in '%s'",
+ line, fname);
+ os_free(psk);
+ ret = -1;
+ break;
+ }
+ pos++;
+
+ ok = 0;
+ len = os_strlen(pos);
+ if (len == 64 && hexstr2bin(pos, psk->psk, PMK_LEN) == 0)
+ ok = 1;
+ else if (len >= 8 && len < 64) {
+ pbkdf2_sha1(pos, ssid->ssid, ssid->ssid_len,
+ 4096, psk->psk, PMK_LEN);
+ ok = 1;
+ }
+ if (!ok) {
+ wpa_printf(MSG_ERROR, "Invalid PSK '%s' on line %d in "
+ "'%s'", pos, line, fname);
+ os_free(psk);
+ ret = -1;
+ break;
+ }
+
+ psk->next = ssid->wpa_psk;
+ ssid->wpa_psk = psk;
+ }
+
+ fclose(f);
+
+ return ret;
+}
+
+
+static int hostapd_derive_psk(struct hostapd_ssid *ssid)
+{
+ ssid->wpa_psk = os_zalloc(sizeof(struct hostapd_wpa_psk));
+ if (ssid->wpa_psk == NULL) {
+ wpa_printf(MSG_ERROR, "Unable to alloc space for PSK");
+ return -1;
+ }
+ wpa_hexdump_ascii(MSG_DEBUG, "SSID",
+ (u8 *) ssid->ssid, ssid->ssid_len);
+ wpa_hexdump_ascii_key(MSG_DEBUG, "PSK (ASCII passphrase)",
+ (u8 *) ssid->wpa_passphrase,
+ os_strlen(ssid->wpa_passphrase));
+ pbkdf2_sha1(ssid->wpa_passphrase,
+ ssid->ssid, ssid->ssid_len,
+ 4096, ssid->wpa_psk->psk, PMK_LEN);
+ wpa_hexdump_key(MSG_DEBUG, "PSK (from passphrase)",
+ ssid->wpa_psk->psk, PMK_LEN);
+ return 0;
+}
+
+
+int hostapd_setup_wpa_psk(struct hostapd_bss_config *conf)
+{
+ struct hostapd_ssid *ssid = &conf->ssid;
+
+ if (ssid->wpa_passphrase != NULL) {
+ if (ssid->wpa_psk != NULL) {
+ wpa_printf(MSG_DEBUG, "Using pre-configured WPA PSK "
+ "instead of passphrase");
+ } else {
+ wpa_printf(MSG_DEBUG, "Deriving WPA PSK based on "
+ "passphrase");
+ if (hostapd_derive_psk(ssid) < 0)
+ return -1;
+ }
+ ssid->wpa_psk->group = 1;
+ }
+
+ if (ssid->wpa_psk_file) {
+ if (hostapd_config_read_wpa_psk(ssid->wpa_psk_file,
+ &conf->ssid))
+ return -1;
+ }
+
+ return 0;
+}
+
+
+int hostapd_wep_key_cmp(struct hostapd_wep_keys *a, struct hostapd_wep_keys *b)
+{
+ int i;
+
+ if (a->idx != b->idx || a->default_len != b->default_len)
+ return 1;
+ for (i = 0; i < NUM_WEP_KEYS; i++)
+ if (a->len[i] != b->len[i] ||
+ os_memcmp(a->key[i], b->key[i], a->len[i]) != 0)
+ return 1;
+ return 0;
+}
+
+
+static void hostapd_config_free_radius(struct hostapd_radius_server *servers,
+ int num_servers)
+{
+ int i;
+
+ for (i = 0; i < num_servers; i++) {
+ os_free(servers[i].shared_secret);
+ }
+ os_free(servers);
+}
+
+
+static void hostapd_config_free_eap_user(struct hostapd_eap_user *user)
+{
+ os_free(user->identity);
+ os_free(user->password);
+ os_free(user);
+}
+
+
+static void hostapd_config_free_wep(struct hostapd_wep_keys *keys)
+{
+ int i;
+ for (i = 0; i < NUM_WEP_KEYS; i++) {
+ os_free(keys->key[i]);
+ keys->key[i] = NULL;
+ }
+}
+
+
+static void hostapd_config_free_bss(struct hostapd_bss_config *conf)
+{
+ struct hostapd_wpa_psk *psk, *prev;
+ struct hostapd_eap_user *user, *prev_user;
+
+ if (conf == NULL)
+ return;
+
+ psk = conf->ssid.wpa_psk;
+ while (psk) {
+ prev = psk;
+ psk = psk->next;
+ os_free(prev);
+ }
+
+ os_free(conf->ssid.wpa_passphrase);
+ os_free(conf->ssid.wpa_psk_file);
+ hostapd_config_free_wep(&conf->ssid.wep);
+#ifdef CONFIG_FULL_DYNAMIC_VLAN
+ os_free(conf->ssid.vlan_tagged_interface);
+#endif /* CONFIG_FULL_DYNAMIC_VLAN */
+
+ user = conf->eap_user;
+ while (user) {
+ prev_user = user;
+ user = user->next;
+ hostapd_config_free_eap_user(prev_user);
+ }
+
+ os_free(conf->dump_log_name);
+ os_free(conf->eap_req_id_text);
+ os_free(conf->accept_mac);
+ os_free(conf->deny_mac);
+ os_free(conf->nas_identifier);
+ hostapd_config_free_radius(conf->radius->auth_servers,
+ conf->radius->num_auth_servers);
+ hostapd_config_free_radius(conf->radius->acct_servers,
+ conf->radius->num_acct_servers);
+ os_free(conf->rsn_preauth_interfaces);
+ os_free(conf->ctrl_interface);
+ os_free(conf->ca_cert);
+ os_free(conf->server_cert);
+ os_free(conf->private_key);
+ os_free(conf->private_key_passwd);
+ os_free(conf->dh_file);
+ os_free(conf->pac_opaque_encr_key);
+ os_free(conf->eap_fast_a_id);
+ os_free(conf->eap_fast_a_id_info);
+ os_free(conf->eap_sim_db);
+ os_free(conf->radius_server_clients);
+ os_free(conf->test_socket);
+ os_free(conf->radius);
+ hostapd_config_free_vlan(conf);
+ if (conf->ssid.dyn_vlan_keys) {
+ struct hostapd_ssid *ssid = &conf->ssid;
+ size_t i;
+ for (i = 0; i <= ssid->max_dyn_vlan_keys; i++) {
+ if (ssid->dyn_vlan_keys[i] == NULL)
+ continue;
+ hostapd_config_free_wep(ssid->dyn_vlan_keys[i]);
+ os_free(ssid->dyn_vlan_keys[i]);
+ }
+ os_free(ssid->dyn_vlan_keys);
+ ssid->dyn_vlan_keys = NULL;
+ }
+
+#ifdef CONFIG_IEEE80211R
+ {
+ struct ft_remote_r0kh *r0kh, *r0kh_prev;
+ struct ft_remote_r1kh *r1kh, *r1kh_prev;
+
+ r0kh = conf->r0kh_list;
+ conf->r0kh_list = NULL;
+ while (r0kh) {
+ r0kh_prev = r0kh;
+ r0kh = r0kh->next;
+ os_free(r0kh_prev);
+ }
+
+ r1kh = conf->r1kh_list;
+ conf->r1kh_list = NULL;
+ while (r1kh) {
+ r1kh_prev = r1kh;
+ r1kh = r1kh->next;
+ os_free(r1kh_prev);
+ }
+ }
+#endif /* CONFIG_IEEE80211R */
+
+#ifdef CONFIG_WPS
+ os_free(conf->wps_pin_requests);
+ os_free(conf->device_name);
+ os_free(conf->manufacturer);
+ os_free(conf->model_name);
+ os_free(conf->model_number);
+ os_free(conf->serial_number);
+ os_free(conf->config_methods);
+ os_free(conf->ap_pin);
+ os_free(conf->extra_cred);
+ os_free(conf->ap_settings);
+ os_free(conf->upnp_iface);
+ os_free(conf->friendly_name);
+ os_free(conf->manufacturer_url);
+ os_free(conf->model_description);
+ os_free(conf->model_url);
+ os_free(conf->upc);
+#endif /* CONFIG_WPS */
+}
+
+
+/**
+ * hostapd_config_free - Free hostapd configuration
+ * @conf: Configuration data from hostapd_config_read().
+ */
+void hostapd_config_free(struct hostapd_config *conf)
+{
+ size_t i;
+
+ if (conf == NULL)
+ return;
+
+ for (i = 0; i < conf->num_bss; i++)
+ hostapd_config_free_bss(&conf->bss[i]);
+ os_free(conf->bss);
+ os_free(conf->supported_rates);
+ os_free(conf->basic_rates);
+
+ os_free(conf);
+}
+
+
+/**
+ * hostapd_maclist_found - Find a MAC address from a list
+ * @list: MAC address list
+ * @num_entries: Number of addresses in the list
+ * @addr: Address to search for
+ * @vlan_id: Buffer for returning VLAN ID or %NULL if not needed
+ * Returns: 1 if address is in the list or 0 if not.
+ *
+ * Perform a binary search for given MAC address from a pre-sorted list.
+ */
+int hostapd_maclist_found(struct mac_acl_entry *list, int num_entries,
+ const u8 *addr, int *vlan_id)
+{
+ int start, end, middle, res;
+
+ start = 0;
+ end = num_entries - 1;
+
+ while (start <= end) {
+ middle = (start + end) / 2;
+ res = os_memcmp(list[middle].addr, addr, ETH_ALEN);
+ if (res == 0) {
+ if (vlan_id)
+ *vlan_id = list[middle].vlan_id;
+ return 1;
+ }
+ if (res < 0)
+ start = middle + 1;
+ else
+ end = middle - 1;
+ }
+
+ return 0;
+}
+
+
+int hostapd_rate_found(int *list, int rate)
+{
+ int i;
+
+ if (list == NULL)
+ return 0;
+
+ for (i = 0; list[i] >= 0; i++)
+ if (list[i] == rate)
+ return 1;
+
+ return 0;
+}
+
+
+const char * hostapd_get_vlan_id_ifname(struct hostapd_vlan *vlan, int vlan_id)
+{
+ struct hostapd_vlan *v = vlan;
+ while (v) {
+ if (v->vlan_id == vlan_id || v->vlan_id == VLAN_ID_WILDCARD)
+ return v->ifname;
+ v = v->next;
+ }
+ return NULL;
+}
+
+
+const u8 * hostapd_get_psk(const struct hostapd_bss_config *conf,
+ const u8 *addr, const u8 *prev_psk)
+{
+ struct hostapd_wpa_psk *psk;
+ int next_ok = prev_psk == NULL;
+
+ for (psk = conf->ssid.wpa_psk; psk != NULL; psk = psk->next) {
+ if (next_ok &&
+ (psk->group || os_memcmp(psk->addr, addr, ETH_ALEN) == 0))
+ return psk->psk;
+
+ if (psk->psk == prev_psk)
+ next_ok = 1;
+ }
+
+ return NULL;
+}
+
+
+const struct hostapd_eap_user *
+hostapd_get_eap_user(const struct hostapd_bss_config *conf, const u8 *identity,
+ size_t identity_len, int phase2)
+{
+ struct hostapd_eap_user *user = conf->eap_user;
+
+#ifdef CONFIG_WPS
+ if (conf->wps_state && identity_len == WSC_ID_ENROLLEE_LEN &&
+ os_memcmp(identity, WSC_ID_ENROLLEE, WSC_ID_ENROLLEE_LEN) == 0) {
+ static struct hostapd_eap_user wsc_enrollee;
+ os_memset(&wsc_enrollee, 0, sizeof(wsc_enrollee));
+ wsc_enrollee.methods[0].method = eap_server_get_type(
+ "WSC", &wsc_enrollee.methods[0].vendor);
+ return &wsc_enrollee;
+ }
+
+ if (conf->wps_state && identity_len == WSC_ID_REGISTRAR_LEN &&
+ os_memcmp(identity, WSC_ID_REGISTRAR, WSC_ID_REGISTRAR_LEN) == 0) {
+ static struct hostapd_eap_user wsc_registrar;
+ os_memset(&wsc_registrar, 0, sizeof(wsc_registrar));
+ wsc_registrar.methods[0].method = eap_server_get_type(
+ "WSC", &wsc_registrar.methods[0].vendor);
+ wsc_registrar.password = (u8 *) conf->ap_pin;
+ wsc_registrar.password_len = conf->ap_pin ?
+ os_strlen(conf->ap_pin) : 0;
+ return &wsc_registrar;
+ }
+#endif /* CONFIG_WPS */
+
+ while (user) {
+ if (!phase2 && user->identity == NULL) {
+ /* Wildcard match */
+ break;
+ }
+
+ if (user->phase2 == !!phase2 && user->wildcard_prefix &&
+ identity_len >= user->identity_len &&
+ os_memcmp(user->identity, identity, user->identity_len) ==
+ 0) {
+ /* Wildcard prefix match */
+ break;
+ }
+
+ if (user->phase2 == !!phase2 &&
+ user->identity_len == identity_len &&
+ os_memcmp(user->identity, identity, identity_len) == 0)
+ break;
+ user = user->next;
+ }
+
+ return user;
+}