ctrl_iface.c

WLAN无线网络管理的最新程序

/*
 * WPA Supplicant / Control interface (shared code for all backends)
 * Copyright (c) 2004-2006, Jouni Malinen <[e-mail]>
 *
 * 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"

#include "common.h"
#include "eloop.h"
#include "wpa.h"
#include "wpa_supplicant.h"
#include "config.h"
#include "eapol_sm.h"
#include "wpa_supplicant_i.h"
#include "ctrl_iface.h"
#include "l2_packet.h"
#include "preauth.h"
#include "pmksa_cache.h"
#include "wpa_ctrl.h"
#include "eap.h"


static int wpa_supplicant_global_iface_interfaces(struct wpa_global *global,
						  char *buf, int len);


static int wpa_supplicant_ctrl_iface_set(struct wpa_supplicant *wpa_s,
					 char *cmd)
{
	char *value;
	int ret = 0;

	value = os_strchr(cmd, ' ');
	if (value == NULL)
		return -1;
	*value++ = '\0';

	wpa_printf(MSG_DEBUG, "CTRL_IFACE SET '%s'='%s'", cmd, value);
	if (os_strcasecmp(cmd, "EAPOL::heldPeriod") == 0) {
		eapol_sm_configure(wpa_s->eapol,
				   atoi(value), -1, -1, -1);
	} else if (os_strcasecmp(cmd, "EAPOL::authPeriod") == 0) {
		eapol_sm_configure(wpa_s->eapol,
				   -1, atoi(value), -1, -1);
	} else if (os_strcasecmp(cmd, "EAPOL::startPeriod") == 0) {
		eapol_sm_configure(wpa_s->eapol,
				   -1, -1, atoi(value), -1);
	} else if (os_strcasecmp(cmd, "EAPOL::maxStart") == 0) {
		eapol_sm_configure(wpa_s->eapol,
				   -1, -1, -1, atoi(value));
	} else if (os_strcasecmp(cmd, "dot11RSNAConfigPMKLifetime") == 0) {
		if (wpa_sm_set_param(wpa_s->wpa, RSNA_PMK_LIFETIME,
				     atoi(value)))
			ret = -1;
	} else if (os_strcasecmp(cmd, "dot11RSNAConfigPMKReauthThreshold") ==
		   0) {
		if (wpa_sm_set_param(wpa_s->wpa, RSNA_PMK_REAUTH_THRESHOLD,
				     atoi(value)))
			ret = -1;
	} else if (os_strcasecmp(cmd, "dot11RSNAConfigSATimeout") == 0) {
		if (wpa_sm_set_param(wpa_s->wpa, RSNA_SA_TIMEOUT, atoi(value)))
			ret = -1;
	} else
		ret = -1;

	return ret;
}


static int wpa_supplicant_ctrl_iface_preauth(struct wpa_supplicant *wpa_s,
					     char *addr)
{
	u8 bssid[ETH_ALEN];

	if (hwaddr_aton(addr, bssid)) {
		wpa_printf(MSG_DEBUG, "CTRL_IFACE PREAUTH: invalid address "
			   "'%s'", addr);
		return -1;
	}

	wpa_printf(MSG_DEBUG, "CTRL_IFACE PREAUTH " MACSTR, MAC2STR(bssid));
	rsn_preauth_deinit(wpa_s->wpa);
	if (rsn_preauth_init(wpa_s->wpa, bssid, wpa_s->current_ssid))
		return -1;

	return 0;
}


#ifdef CONFIG_PEERKEY
/* MLME-STKSTART.request(peer) */
static int wpa_supplicant_ctrl_iface_stkstart(
	struct wpa_supplicant *wpa_s, char *addr)
{
	u8 peer[ETH_ALEN];

	if (hwaddr_aton(addr, peer)) {
		wpa_printf(MSG_DEBUG, "CTRL_IFACE STKSTART: invalid "
			   "address '%s'", peer);
		return -1;
	}

	wpa_printf(MSG_DEBUG, "CTRL_IFACE STKSTART " MACSTR,
		   MAC2STR(peer));

	return wpa_sm_stkstart(wpa_s->wpa, peer);
}
#endif /* CONFIG_PEERKEY */


static int wpa_supplicant_ctrl_iface_ctrl_rsp(struct wpa_supplicant *wpa_s,
					      char *rsp)
{
#ifdef IEEE8021X_EAPOL
	char *pos, *id_pos;
	int id;
	struct wpa_ssid *ssid;

	pos = os_strchr(rsp, '-');
	if (pos == NULL)
		return -1;
	*pos++ = '\0';
	id_pos = pos;
	pos = os_strchr(pos, ':');
	if (pos == NULL)
		return -1;
	*pos++ = '\0';
	id = atoi(id_pos);
	wpa_printf(MSG_DEBUG, "CTRL_IFACE: field=%s id=%d", rsp, id);
	wpa_hexdump_ascii_key(MSG_DEBUG, "CTRL_IFACE: value",
			      (u8 *) pos, os_strlen(pos));

	ssid = wpa_config_get_network(wpa_s->conf, id);
	if (ssid == NULL) {
		wpa_printf(MSG_DEBUG, "CTRL_IFACE: Could not find SSID id=%d "
			   "to update", id);
		return -1;
	}

	if (os_strcmp(rsp, "IDENTITY") == 0) {
		os_free(ssid->identity);
		ssid->identity = (u8 *) os_strdup(pos);
		ssid->identity_len = os_strlen(pos);
		ssid->pending_req_identity = 0;
		if (ssid == wpa_s->current_ssid)
			wpa_s->reassociate = 1;
	} else if (os_strcmp(rsp, "PASSWORD") == 0) {
		os_free(ssid->password);
		ssid->password = (u8 *) os_strdup(pos);
		ssid->password_len = os_strlen(pos);
		ssid->pending_req_password = 0;
		if (ssid == wpa_s->current_ssid)
			wpa_s->reassociate = 1;
	} else if (os_strcmp(rsp, "NEW_PASSWORD") == 0) {
		os_free(ssid->new_password);
		ssid->new_password = (u8 *) os_strdup(pos);
		ssid->new_password_len = os_strlen(pos);
		ssid->pending_req_new_password = 0;
		if (ssid == wpa_s->current_ssid)
			wpa_s->reassociate = 1;
	} else if (os_strcmp(rsp, "PIN") == 0) {
		os_free(ssid->pin);
		ssid->pin = os_strdup(pos);
		ssid->pending_req_pin = 0;
		if (ssid == wpa_s->current_ssid)
			wpa_s->reassociate = 1;
	} else if (os_strcmp(rsp, "OTP") == 0) {
		os_free(ssid->otp);
		ssid->otp = (u8 *) os_strdup(pos);
		ssid->otp_len = os_strlen(pos);
		os_free(ssid->pending_req_otp);
		ssid->pending_req_otp = NULL;
		ssid->pending_req_otp_len = 0;
	} else if (os_strcmp(rsp, "PASSPHRASE") == 0) {
		os_free(ssid->private_key_passwd);
		ssid->private_key_passwd = (u8 *) os_strdup(pos);
		ssid->pending_req_passphrase = 0;
		if (ssid == wpa_s->current_ssid)
			wpa_s->reassociate = 1;
	} else {
		wpa_printf(MSG_DEBUG, "CTRL_IFACE: Unknown field '%s'", rsp);
		return -1;
	}

	return 0;
#else /* IEEE8021X_EAPOL */
	wpa_printf(MSG_DEBUG, "CTRL_IFACE: 802.1X not included");
	return -1;
#endif /* IEEE8021X_EAPOL */
}


static int wpa_supplicant_ctrl_iface_status(struct wpa_supplicant *wpa_s,
					    const char *params,
					    char *buf, size_t buflen)
{
	char *pos, *end, tmp[30];
	int res, verbose, ret;

	verbose = os_strcmp(params, "-VERBOSE") == 0;
	pos = buf;
	end = buf + buflen;
	if (wpa_s->wpa_state >= WPA_ASSOCIATED) {
		struct wpa_ssid *ssid = wpa_s->current_ssid;
		ret = os_snprintf(pos, end - pos, "bssid=" MACSTR "\n",
				  MAC2STR(wpa_s->bssid));
		if (ret < 0 || ret >= end - pos)
			return pos - buf;
		pos += ret;
		if (ssid) {
			u8 *_ssid = ssid->ssid;
			size_t ssid_len = ssid->ssid_len;
			u8 ssid_buf[MAX_SSID_LEN];
			if (ssid_len == 0) {
				int _res = wpa_drv_get_ssid(wpa_s, ssid_buf);
				if (_res < 0)
					ssid_len = 0;
				else
					ssid_len = _res;
				_ssid = ssid_buf;
			}
			ret = os_snprintf(pos, end - pos, "ssid=%s\nid=%d\n",
					  wpa_ssid_txt(_ssid, ssid_len),
					  ssid->id);
			if (ret < 0 || ret >= end - pos)
				return pos - buf;
			pos += ret;

			if (ssid->id_str) {
				ret = os_snprintf(pos, end - pos,
						  "id_str=%s\n",
						  ssid->id_str);
				if (ret < 0 || ret >= end - pos)
					return pos - buf;
				pos += ret;
			}
		}

		pos += wpa_sm_get_status(wpa_s->wpa, pos, end - pos, verbose);
	}
	ret = os_snprintf(pos, end - pos, "wpa_state=%s\n",
			  wpa_supplicant_state_txt(wpa_s->wpa_state));
	if (ret < 0 || ret >= end - pos)
		return pos - buf;
	pos += ret;

	if (wpa_s->l2 &&
	    l2_packet_get_ip_addr(wpa_s->l2, tmp, sizeof(tmp)) >= 0) {
		ret = os_snprintf(pos, end - pos, "ip_address=%s\n", tmp);
		if (ret < 0 || ret >= end - pos)
			return pos - buf;
		pos += ret;
	}

	if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X ||
	    wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
		res = eapol_sm_get_status(wpa_s->eapol, pos, end - pos,
					  verbose);
		if (res >= 0)
			pos += res;
	}

	res = rsn_preauth_get_status(wpa_s->wpa, pos, end - pos, verbose);
	if (res >= 0)
		pos += res;

	return pos - buf;
}


static int wpa_supplicant_ctrl_iface_bssid(struct wpa_supplicant *wpa_s,
					   char *cmd)
{
	char *pos;
	int id;
	struct wpa_ssid *ssid;
	u8 bssid[ETH_ALEN];

	/* cmd: "<network id> <BSSID>" */
	pos = os_strchr(cmd, ' ');
	if (pos == NULL)
		return -1;
	*pos++ = '\0';
	id = atoi(cmd);
	wpa_printf(MSG_DEBUG, "CTRL_IFACE: id=%d bssid='%s'", id, pos);
	if (hwaddr_aton(pos, bssid)) {
		wpa_printf(MSG_DEBUG ,"CTRL_IFACE: invalid BSSID '%s'", pos);
		return -1;
	}

	ssid = wpa_config_get_network(wpa_s->conf, id);
	if (ssid == NULL) {
		wpa_printf(MSG_DEBUG, "CTRL_IFACE: Could not find SSID id=%d "
			   "to update", id);
		return -1;
	}

	os_memcpy(ssid->bssid, bssid, ETH_ALEN);
	ssid->bssid_set =
		os_memcmp(bssid, "\x00\x00\x00\x00\x00\x00", ETH_ALEN) != 0;
		

	return 0;
}


static int wpa_supplicant_ctrl_iface_list_networks(
	struct wpa_supplicant *wpa_s, char *buf, size_t buflen)
{
	char *pos, *end;
	struct wpa_ssid *ssid;
	int ret;

	pos = buf;
	end = buf + buflen;
	ret = os_snprintf(pos, end - pos,
			  "network id / ssid / bssid / flags\n");
	if (ret < 0 || ret >= end - pos)
		return pos - buf;
	pos += ret;

	ssid = wpa_s->conf->ssid;
	while (ssid) {
		ret = os_snprintf(pos, end - pos, "%d\t%s",
				  ssid->id,
				  wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
		if (ret < 0 || ret >= end - pos)
			return pos - buf;
		pos += ret;
		if (ssid->bssid_set) {
			ret = os_snprintf(pos, end - pos, "\t" MACSTR,
					  MAC2STR(ssid->bssid));
		} else {
			ret = os_snprintf(pos, end - pos, "\tany");
		}
		if (ret < 0 || ret >= end - pos)
			return pos - buf;
		pos += ret;
		ret = os_snprintf(pos, end - pos, "\t%s%s",
				  ssid == wpa_s->current_ssid ?
				  "[CURRENT]" : "",
				  ssid->disabled ? "[DISABLED]" : "");
		if (ret < 0 || ret >= end - pos)
			return pos - buf;
		pos += ret;
		ret = os_snprintf(pos, end - pos, "\n");
		if (ret < 0 || ret >= end - pos)
			return pos - buf;
		pos += ret;

		ssid = ssid->next;
	}

	return pos - buf;
}


static char * wpa_supplicant_cipher_txt(char *pos, char *end, int cipher)
{
	int first = 1, ret;
	ret = os_snprintf(pos, end - pos, "-");
	if (ret < 0 || ret >= end - pos)
		return pos;
	pos += ret;
	if (cipher & WPA_CIPHER_NONE) {
		ret = os_snprintf(pos, end - pos, "%sNONE", first ? "" : "+");
		if (ret < 0 || ret >= end - pos)
			return pos;
		pos += ret;
		first = 0;
	}
	if (cipher & WPA_CIPHER_WEP40) {
		ret = os_snprintf(pos, end - pos, "%sWEP40", first ? "" : "+");
		if (ret < 0 || ret >= end - pos)
			return pos;
		pos += ret;
		first = 0;
	}
	if (cipher & WPA_CIPHER_WEP104) {
		ret = os_snprintf(pos, end - pos, "%sWEP104",
				  first ? "" : "+");
		if (ret < 0 || ret >= end - pos)
			return pos;
		pos += ret;
		first = 0;
	}
	if (cipher & WPA_CIPHER_TKIP) {
		ret = os_snprintf(pos, end - pos, "%sTKIP", first ? "" : "+");
		if (ret < 0 || ret >= end - pos)
			return pos;
		pos += ret;
		first = 0;
	}
	if (cipher & WPA_CIPHER_CCMP) {
		ret = os_snprintf(pos, end - pos, "%sCCMP", first ? "" : "+");
		if (ret < 0 || ret >= end - pos)
			return pos;
		pos += ret;
		first = 0;
	}
	return pos;
}


static char * wpa_supplicant_ie_txt(char *pos, char *end, const char *proto,
				    const u8 *ie, size_t ie_len)
{
	struct wpa_ie_data data;
	int first, ret;

	ret = os_snprintf(pos, end - pos, "[%s-", proto);
	if (ret < 0 || ret >= end - pos)
		return pos;
	pos += ret;

	if (wpa_parse_wpa_ie(ie, ie_len, &data) < 0) {
		ret = os_snprintf(pos, end - pos, "?]");
		if (ret < 0 || ret >= end - pos)
			return pos;
		pos += ret;
		return pos;
	}

	first = 1;
	if (data.key_mgmt & WPA_KEY_MGMT_IEEE8021X) {
		ret = os_snprintf(pos, end - pos, "%sEAP", first ? "" : "+");
		if (ret < 0 || ret >= end - pos)
			return pos;
		pos += ret;
		first = 0;
	}
	if (data.key_mgmt & WPA_KEY_MGMT_PSK) {
		ret = os_snprintf(pos, end - pos, "%sPSK", first ? "" : "+");
		if (ret < 0 || ret >= end - pos)
			return pos;
		pos += ret;
		first = 0;
	}
	if (data.key_mgmt & WPA_KEY_MGMT_WPA_NONE) {
		ret = os_snprintf(pos, end - pos, "%sNone", first ? "" : "+");
		if (ret < 0 || ret >= end - pos)
			return pos;
		pos += ret;
		first = 0;
	}

	pos = wpa_supplicant_cipher_txt(pos, end, data.pairwise_cipher);

	if (data.capabilities & WPA_CAPABILITY_PREAUTH) {
		ret = os_snprintf(pos, end - pos, "-preauth");