config.c

最新的Host AP 新添加了许多pcmcia 的驱动

/*
 * hostapd / Configuration file
 * Copyright (c) 2003-2008, Jouni Malinen <[e-mail]>
 * Copyright (c) 2007-2008, Intel Corporation
 *
 * 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 "includes.h"
#ifndef CONFIG_NATIVE_WINDOWS
#include <grp.h>
#endif /* CONFIG_NATIVE_WINDOWS */

#include "hostapd.h"
#include "driver.h"
#include "sha1.h"
#include "eap_server/eap.h"
#include "radius/radius_client.h"
#include "wpa_common.h"
#include "wpa.h"
#include "uuid.h"
#include "eap_common/eap_wsc_common.h"


#define MAX_STA_COUNT 2007

extern struct wpa_driver_ops *hostapd_drivers[];


static int hostapd_config_read_vlan_file(struct hostapd_bss_config *bss,
					 const char *fname)
{
	FILE *f;
	char buf[128], *pos, *pos2;
	int line = 0, vlan_id;
	struct hostapd_vlan *vlan;

	f = fopen(fname, "r");
	if (!f) {
		wpa_printf(MSG_ERROR, "VLAN file '%s' not readable.", 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 (buf[0] == '*') {
			vlan_id = VLAN_ID_WILDCARD;
			pos = buf + 1;
		} else {
			vlan_id = strtol(buf, &pos, 10);
			if (buf == pos || vlan_id < 1 ||
			    vlan_id > MAX_VLAN_ID) {
				wpa_printf(MSG_ERROR, "Invalid VLAN ID at "
					   "line %d in '%s'", line, fname);
				fclose(f);
				return -1;
			}
		}

		while (*pos == ' ' || *pos == '\t')
			pos++;
		pos2 = pos;
		while (*pos2 != ' ' && *pos2 != '\t' && *pos2 != '\0')
			pos2++;
		*pos2 = '\0';
		if (*pos == '\0' || os_strlen(pos) > IFNAMSIZ) {
			wpa_printf(MSG_ERROR, "Invalid VLAN ifname at line %d "
				   "in '%s'", line, fname);
			fclose(f);
			return -1;
		}

		vlan = os_malloc(sizeof(*vlan));
		if (vlan == NULL) {
			wpa_printf(MSG_ERROR, "Out of memory while reading "
				   "VLAN interfaces from '%s'", fname);
			fclose(f);
			return -1;
		}

		os_memset(vlan, 0, sizeof(*vlan));
		vlan->vlan_id = vlan_id;
		os_strlcpy(vlan->ifname, pos, sizeof(vlan->ifname));
		if (bss->vlan_tail)
			bss->vlan_tail->next = vlan;
		else
			bss->vlan = vlan;
		bss->vlan_tail = vlan;
	}

	fclose(f);

	return 0;
}


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;
}


/* convert floats with one decimal place to value*10 int, i.e.,
 * "1.5" will return 15 */
static int hostapd_config_read_int10(const char *value)
{
	int i, d;
	char *pos;

	i = atoi(value);
	pos = os_strchr(value, '.');
	d = 0;
	if (pos) {
		pos++;
		if (*pos >= '0' && *pos <= '9')
			d = *pos - '0';
	}

	return i * 10 + d;
}


static 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;

#ifdef CONFIG_IEEE80211W
	bss->assoc_sa_query_max_timeout = 1000;
	bss->assoc_sa_query_retry_timeout = 201;
#endif /* CONFIG_IEEE80211W */
#ifdef EAP_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_FAST */
}


static struct hostapd_config * hostapd_config_defaults(void)
{
	struct hostapd_config *conf;
	struct hostapd_bss_config *bss;
	int i;
	const int aCWmin = 15, aCWmax = 1024;
	const struct hostapd_wme_ac_params ac_bk =
		{ aCWmin, aCWmax, 7, 0, 0 }; /* background traffic */
	const struct hostapd_wme_ac_params ac_be =
		{ aCWmin, aCWmax, 3, 0, 0 }; /* best effort traffic */
	const struct hostapd_wme_ac_params ac_vi = /* video traffic */
		{ aCWmin >> 1, aCWmin, 2, 3000 / 32, 1 };
	const struct hostapd_wme_ac_params ac_vo = /* voice traffic */
		{ aCWmin >> 2, aCWmin >> 1, 2, 1500 / 32, 1 };

	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;
	}

	/* set default driver based on configuration */
	conf->driver = hostapd_drivers[0];
	if (conf->driver == NULL) {
		wpa_printf(MSG_ERROR, "No driver wrappers registered!");
		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->bridge_packets = INTERNAL_BRIDGE_DO_NOT_CONTROL;

	for (i = 0; i < NUM_TX_QUEUES; i++)
		conf->tx_queue[i].aifs = -1; /* use hw default */

	conf->wme_ac_params[0] = ac_be;
	conf->wme_ac_params[1] = ac_bk;
	conf->wme_ac_params[2] = ac_vi;
	conf->wme_ac_params[3] = ac_vo;

#ifdef CONFIG_IEEE80211N
	conf->ht_capab = HT_CAP_INFO_SMPS_DISABLED;
#endif /* CONFIG_IEEE80211N */

	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_acl_comp(const void *a, const void *b)
{
	const struct mac_acl_entry *aa = a;
	const struct mac_acl_entry *bb = b;
	return os_memcmp(aa->addr, bb->addr, sizeof(macaddr));
}


static int hostapd_config_read_maclist(const char *fname,
				       struct mac_acl_entry **acl, int *num)
{
	FILE *f;
	char buf[128], *pos;
	int line = 0;
	u8 addr[ETH_ALEN];
	struct mac_acl_entry *newacl;
	int vlan_id;

	if (!fname)
		return 0;

	f = fopen(fname, "r");
	if (!f) {
		wpa_printf(MSG_ERROR, "MAC list 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' at "
				   "line %d in '%s'", buf, line, fname);
			fclose(f);
			return -1;
		}

		vlan_id = 0;
		pos = buf;
		while (*pos != '\0' && *pos != ' ' && *pos != '\t')
			pos++;
		while (*pos == ' ' || *pos == '\t')
			pos++;
		if (*pos != '\0')
			vlan_id = atoi(pos);

		newacl = os_realloc(*acl, (*num + 1) * sizeof(**acl));
		if (newacl == NULL) {
			wpa_printf(MSG_ERROR, "MAC list reallocation failed");
			fclose(f);
			return -1;
		}

		*acl = newacl;
		os_memcpy((*acl)[*num].addr, addr, ETH_ALEN);
		(*acl)[*num].vlan_id = vlan_id;
		(*num)++;
	}

	fclose(f);

	qsort(*acl, *num, sizeof(**acl), hostapd_acl_comp);

	return 0;
}


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;
}


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_ERROR, "Warning: both WPA PSK and "
				   "passphrase set. Using passphrase.");
			os_free(ssid->wpa_psk);
		}
		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(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(MSG_DEBUG, "PSK (from passphrase)",
			    ssid->wpa_psk->psk, PMK_LEN);
		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;
}


#ifdef EAP_SERVER
static int hostapd_config_read_eap_user(const char *fname,
					struct hostapd_bss_config *conf)
{
	FILE *f;
	char buf[512], *pos, *start, *pos2;
	int line = 0, ret = 0, num_methods;