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hostap/wpa_supplicant/eapol_test.c
Jouni Malinen cfdb32e88f eapol_test: Check EAP-Key-Name 
The new command line argument -e can be used to request the server to
send EAP-Key-Name in Access-Accept. If both the local EAP peer
implementation and server provide the EAP Session-Id, compare those
values and indicate in debug log whether a match was seen.

Signed-off-by: Jouni Malinen <j@w1.fi>
2014-05-11 21:22:37 +03:00

1418 lines
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/*
* WPA Supplicant - test code
* Copyright (c) 2003-2013, Jouni Malinen <j@w1.fi>
*
* This software may be distributed under the terms of the BSD license.
* See README for more details.
*
* IEEE 802.1X Supplicant test code (to be used in place of wpa_supplicant.c.
* Not used in production version.
*/
#include "includes.h"
#include <assert.h>
#include "common.h"
#include "utils/ext_password.h"
#include "config.h"
#include "eapol_supp/eapol_supp_sm.h"
#include "eap_peer/eap.h"
#include "eap_server/eap_methods.h"
#include "eloop.h"
#include "utils/base64.h"
#include "rsn_supp/wpa.h"
#include "wpa_supplicant_i.h"
#include "radius/radius.h"
#include "radius/radius_client.h"
#include "common/wpa_ctrl.h"
#include "ctrl_iface.h"
#include "pcsc_funcs.h"
#include "wpas_glue.h"
struct wpa_driver_ops *wpa_drivers[] = { NULL };
struct extra_radius_attr {
u8 type;
char syntax;
char *data;
struct extra_radius_attr *next;
};
struct eapol_test_data {
struct wpa_supplicant *wpa_s;
int eapol_test_num_reauths;
int no_mppe_keys;
int num_mppe_ok, num_mppe_mismatch;
int req_eap_key_name;
u8 radius_identifier;
struct radius_msg *last_recv_radius;
struct in_addr own_ip_addr;
struct radius_client_data *radius;
struct hostapd_radius_servers *radius_conf;
/* last received EAP Response from Authentication Server */
struct wpabuf *last_eap_radius;
u8 authenticator_pmk[PMK_LEN];
size_t authenticator_pmk_len;
u8 authenticator_eap_key_name[256];
size_t authenticator_eap_key_name_len;
int radius_access_accept_received;
int radius_access_reject_received;
int auth_timed_out;
u8 *eap_identity;
size_t eap_identity_len;
char *connect_info;
u8 own_addr[ETH_ALEN];
struct extra_radius_attr *extra_attrs;
FILE *server_cert_file;
};
static struct eapol_test_data eapol_test;
static void send_eap_request_identity(void *eloop_ctx, void *timeout_ctx);
static void hostapd_logger_cb(void *ctx, const u8 *addr, unsigned int module,
int level, const char *txt, size_t len)
{
if (addr)
wpa_printf(MSG_DEBUG, "STA " MACSTR ": %s\n",
MAC2STR(addr), txt);
else
wpa_printf(MSG_DEBUG, "%s", txt);
}
static int add_extra_attr(struct radius_msg *msg,
struct extra_radius_attr *attr)
{
size_t len;
char *pos;
u32 val;
char buf[RADIUS_MAX_ATTR_LEN + 1];
switch (attr->syntax) {
case 's':
os_snprintf(buf, sizeof(buf), "%s", attr->data);
len = os_strlen(buf);
break;
case 'n':
buf[0] = '\0';
len = 1;
break;
case 'x':
pos = attr->data;
if (pos[0] == '0' && pos[1] == 'x')
pos += 2;
len = os_strlen(pos);
if ((len & 1) || (len / 2) > RADIUS_MAX_ATTR_LEN) {
printf("Invalid extra attribute hexstring\n");
return -1;
}
len /= 2;
if (hexstr2bin(pos, (u8 *) buf, len) < 0) {
printf("Invalid extra attribute hexstring\n");
return -1;
}
break;
case 'd':
val = htonl(atoi(attr->data));
os_memcpy(buf, &val, 4);
len = 4;
break;
default:
printf("Incorrect extra attribute syntax specification\n");
return -1;
}
if (!radius_msg_add_attr(msg, attr->type, (u8 *) buf, len)) {
printf("Could not add attribute %d\n", attr->type);
return -1;
}
return 0;
}
static int add_extra_attrs(struct radius_msg *msg,
struct extra_radius_attr *attrs)
{
struct extra_radius_attr *p;
for (p = attrs; p; p = p->next) {
if (add_extra_attr(msg, p) < 0)
return -1;
}
return 0;
}
static struct extra_radius_attr *
find_extra_attr(struct extra_radius_attr *attrs, u8 type)
{
struct extra_radius_attr *p;
for (p = attrs; p; p = p->next) {
if (p->type == type)
return p;
}
return NULL;
}
static void ieee802_1x_encapsulate_radius(struct eapol_test_data *e,
const u8 *eap, size_t len)
{
struct radius_msg *msg;
char buf[RADIUS_MAX_ATTR_LEN + 1];
const struct eap_hdr *hdr;
const u8 *pos;
wpa_printf(MSG_DEBUG, "Encapsulating EAP message into a RADIUS "
"packet");
e->radius_identifier = radius_client_get_id(e->radius);
msg = radius_msg_new(RADIUS_CODE_ACCESS_REQUEST,
e->radius_identifier);
if (msg == NULL) {
printf("Could not create net RADIUS packet\n");
return;
}
radius_msg_make_authenticator(msg, (u8 *) e, sizeof(*e));
hdr = (const struct eap_hdr *) eap;
pos = (const u8 *) (hdr + 1);
if (len > sizeof(*hdr) && hdr->code == EAP_CODE_RESPONSE &&
pos[0] == EAP_TYPE_IDENTITY) {
pos++;
os_free(e->eap_identity);
e->eap_identity_len = len - sizeof(*hdr) - 1;
e->eap_identity = os_malloc(e->eap_identity_len);
if (e->eap_identity) {
os_memcpy(e->eap_identity, pos, e->eap_identity_len);
wpa_hexdump(MSG_DEBUG, "Learned identity from "
"EAP-Response-Identity",
e->eap_identity, e->eap_identity_len);
}
}
if (e->eap_identity &&
!radius_msg_add_attr(msg, RADIUS_ATTR_USER_NAME,
e->eap_identity, e->eap_identity_len)) {
printf("Could not add User-Name\n");
goto fail;
}
if (e->req_eap_key_name &&
!radius_msg_add_attr(msg, RADIUS_ATTR_EAP_KEY_NAME, (u8 *) "\0",
1)) {
printf("Could not add EAP-Key-Name\n");
goto fail;
}
if (!find_extra_attr(e->extra_attrs, RADIUS_ATTR_NAS_IP_ADDRESS) &&
!radius_msg_add_attr(msg, RADIUS_ATTR_NAS_IP_ADDRESS,
(u8 *) &e->own_ip_addr, 4)) {
printf("Could not add NAS-IP-Address\n");
goto fail;
}
os_snprintf(buf, sizeof(buf), RADIUS_802_1X_ADDR_FORMAT,
MAC2STR(e->wpa_s->own_addr));
if (!find_extra_attr(e->extra_attrs, RADIUS_ATTR_CALLING_STATION_ID)
&&
!radius_msg_add_attr(msg, RADIUS_ATTR_CALLING_STATION_ID,
(u8 *) buf, os_strlen(buf))) {
printf("Could not add Calling-Station-Id\n");
goto fail;
}
/* TODO: should probably check MTU from driver config; 2304 is max for
* IEEE 802.11, but use 1400 to avoid problems with too large packets
*/
if (!find_extra_attr(e->extra_attrs, RADIUS_ATTR_FRAMED_MTU) &&
!radius_msg_add_attr_int32(msg, RADIUS_ATTR_FRAMED_MTU, 1400)) {
printf("Could not add Framed-MTU\n");
goto fail;
}
if (!find_extra_attr(e->extra_attrs, RADIUS_ATTR_NAS_PORT_TYPE) &&
!radius_msg_add_attr_int32(msg, RADIUS_ATTR_NAS_PORT_TYPE,
RADIUS_NAS_PORT_TYPE_IEEE_802_11)) {
printf("Could not add NAS-Port-Type\n");
goto fail;
}
os_snprintf(buf, sizeof(buf), "%s", e->connect_info);
if (!find_extra_attr(e->extra_attrs, RADIUS_ATTR_CONNECT_INFO) &&
!radius_msg_add_attr(msg, RADIUS_ATTR_CONNECT_INFO,
(u8 *) buf, os_strlen(buf))) {
printf("Could not add Connect-Info\n");
goto fail;
}
if (add_extra_attrs(msg, e->extra_attrs) < 0)
goto fail;
if (eap && !radius_msg_add_eap(msg, eap, len)) {
printf("Could not add EAP-Message\n");
goto fail;
}
/* State attribute must be copied if and only if this packet is
* Access-Request reply to the previous Access-Challenge */
if (e->last_recv_radius &&
radius_msg_get_hdr(e->last_recv_radius)->code ==
RADIUS_CODE_ACCESS_CHALLENGE) {
int res = radius_msg_copy_attr(msg, e->last_recv_radius,
RADIUS_ATTR_STATE);
if (res < 0) {
printf("Could not copy State attribute from previous "
"Access-Challenge\n");
goto fail;
}
if (res > 0) {
wpa_printf(MSG_DEBUG, " Copied RADIUS State "
"Attribute");
}
}
if (radius_client_send(e->radius, msg, RADIUS_AUTH, e->wpa_s->own_addr)
< 0)
goto fail;
return;
fail:
radius_msg_free(msg);
}
static int eapol_test_eapol_send(void *ctx, int type, const u8 *buf,
size_t len)
{
printf("WPA: eapol_test_eapol_send(type=%d len=%lu)\n",
type, (unsigned long) len);
if (type == IEEE802_1X_TYPE_EAP_PACKET) {
wpa_hexdump(MSG_DEBUG, "TX EAP -> RADIUS", buf, len);
ieee802_1x_encapsulate_radius(&eapol_test, buf, len);
}
return 0;
}
static void eapol_test_set_config_blob(void *ctx,
struct wpa_config_blob *blob)
{
struct eapol_test_data *e = ctx;
wpa_config_set_blob(e->wpa_s->conf, blob);
}
static const struct wpa_config_blob *
eapol_test_get_config_blob(void *ctx, const char *name)
{
struct eapol_test_data *e = ctx;
return wpa_config_get_blob(e->wpa_s->conf, name);
}
static void eapol_test_eapol_done_cb(void *ctx)
{
printf("WPA: EAPOL processing complete\n");
}
static void eapol_sm_reauth(void *eloop_ctx, void *timeout_ctx)
{
struct eapol_test_data *e = eloop_ctx;
printf("\n\n\n\n\neapol_test: Triggering EAP reauthentication\n\n");
e->radius_access_accept_received = 0;
send_eap_request_identity(e->wpa_s, NULL);
}
static int eapol_test_compare_pmk(struct eapol_test_data *e)
{
u8 pmk[PMK_LEN];
int ret = 1;
const u8 *sess_id;
size_t sess_id_len;
if (eapol_sm_get_key(e->wpa_s->eapol, pmk, PMK_LEN) == 0) {
wpa_hexdump(MSG_DEBUG, "PMK from EAPOL", pmk, PMK_LEN);
if (os_memcmp(pmk, e->authenticator_pmk, PMK_LEN) != 0) {
printf("WARNING: PMK mismatch\n");
wpa_hexdump(MSG_DEBUG, "PMK from AS",
e->authenticator_pmk, PMK_LEN);
} else if (e->radius_access_accept_received)
ret = 0;
} else if (e->authenticator_pmk_len == 16 &&
eapol_sm_get_key(e->wpa_s->eapol, pmk, 16) == 0) {
wpa_hexdump(MSG_DEBUG, "LEAP PMK from EAPOL", pmk, 16);
if (os_memcmp(pmk, e->authenticator_pmk, 16) != 0) {
printf("WARNING: PMK mismatch\n");
wpa_hexdump(MSG_DEBUG, "PMK from AS",
e->authenticator_pmk, 16);
} else if (e->radius_access_accept_received)
ret = 0;
} else if (e->radius_access_accept_received && e->no_mppe_keys) {
/* No keying material expected */
ret = 0;
}
if (ret && !e->no_mppe_keys)
e->num_mppe_mismatch++;
else if (!e->no_mppe_keys)
e->num_mppe_ok++;
sess_id = eapol_sm_get_session_id(e->wpa_s->eapol, &sess_id_len);
if (!sess_id)
return ret;
if (e->authenticator_eap_key_name_len == 0) {
wpa_printf(MSG_INFO, "No EAP-Key-Name received from server");
return ret;
}
if (e->authenticator_eap_key_name_len != sess_id_len ||
os_memcmp(e->authenticator_eap_key_name, sess_id, sess_id_len) != 0)
{
wpa_printf(MSG_INFO,
"Locally derived EAP Session-Id does not match EAP-Key-Name from server");
wpa_hexdump(MSG_DEBUG, "EAP Session-Id", sess_id, sess_id_len);
wpa_hexdump(MSG_DEBUG, "EAP-Key-Name from server",
e->authenticator_eap_key_name,
e->authenticator_eap_key_name_len);
} else {
wpa_printf(MSG_INFO,
"Locally derived EAP Session-Id matches EAP-Key-Name from server");
}
return ret;
}
static void eapol_sm_cb(struct eapol_sm *eapol, enum eapol_supp_result result,
void *ctx)
{
struct eapol_test_data *e = ctx;
printf("eapol_sm_cb: result=%d\n", result);
e->eapol_test_num_reauths--;
if (e->eapol_test_num_reauths < 0)
eloop_terminate();
else {
eapol_test_compare_pmk(e);
eloop_register_timeout(0, 100000, eapol_sm_reauth, e, NULL);
}
}
static void eapol_test_write_cert(FILE *f, const char *subject,
const struct wpabuf *cert)
{
unsigned char *encoded;
encoded = base64_encode(wpabuf_head(cert), wpabuf_len(cert), NULL);
if (encoded == NULL)
return;
fprintf(f, "%s\n-----BEGIN CERTIFICATE-----\n%s"
"-----END CERTIFICATE-----\n\n", subject, encoded);
os_free(encoded);
}
#if defined(CONFIG_CTRL_IFACE) || !defined(CONFIG_NO_STDOUT_DEBUG)
static void eapol_test_eap_param_needed(void *ctx, enum wpa_ctrl_req_type field,
const char *default_txt)
{
struct eapol_test_data *e = ctx;
struct wpa_supplicant *wpa_s = e->wpa_s;
struct wpa_ssid *ssid = wpa_s->current_ssid;
const char *field_name, *txt = NULL;
char *buf;
size_t buflen;
int len;
if (ssid == NULL)
return;
field_name = wpa_supplicant_ctrl_req_to_string(field, default_txt,
&txt);
if (field_name == NULL) {
wpa_printf(MSG_WARNING, "Unhandled EAP param %d needed",
field);
return;
}
buflen = 100 + os_strlen(txt) + ssid->ssid_len;
buf = os_malloc(buflen);
if (buf == NULL)
return;
len = os_snprintf(buf, buflen,
WPA_CTRL_REQ "%s-%d:%s needed for SSID ",
field_name, ssid->id, txt);
if (len < 0 || (size_t) len >= buflen) {
os_free(buf);
return;
}
if (ssid->ssid && buflen > len + ssid->ssid_len) {
os_memcpy(buf + len, ssid->ssid, ssid->ssid_len);
len += ssid->ssid_len;
buf[len] = '\0';
}
buf[buflen - 1] = '\0';
wpa_msg(wpa_s, MSG_INFO, "%s", buf);
os_free(buf);
}
#else /* CONFIG_CTRL_IFACE || !CONFIG_NO_STDOUT_DEBUG */
#define eapol_test_eap_param_needed NULL
#endif /* CONFIG_CTRL_IFACE || !CONFIG_NO_STDOUT_DEBUG */
static void eapol_test_cert_cb(void *ctx, int depth, const char *subject,
const char *cert_hash,
const struct wpabuf *cert)
{
struct eapol_test_data *e = ctx;
wpa_msg(e->wpa_s, MSG_INFO, WPA_EVENT_EAP_PEER_CERT
"depth=%d subject='%s'%s%s",
depth, subject,
cert_hash ? " hash=" : "",
cert_hash ? cert_hash : "");
if (cert) {
char *cert_hex;
size_t len = wpabuf_len(cert) * 2 + 1;
cert_hex = os_malloc(len);
if (cert_hex) {
wpa_snprintf_hex(cert_hex, len, wpabuf_head(cert),
wpabuf_len(cert));
wpa_msg_ctrl(e->wpa_s, MSG_INFO,
WPA_EVENT_EAP_PEER_CERT
"depth=%d subject='%s' cert=%s",
depth, subject, cert_hex);
os_free(cert_hex);
}
if (e->server_cert_file)
eapol_test_write_cert(e->server_cert_file,
subject, cert);
}
}
static void eapol_test_set_anon_id(void *ctx, const u8 *id, size_t len)
{
struct eapol_test_data *e = ctx;
struct wpa_supplicant *wpa_s = e->wpa_s;
char *str;
int res;
wpa_hexdump_ascii(MSG_DEBUG, "EAP method updated anonymous_identity",
id, len);
if (wpa_s->current_ssid == NULL)
return;
if (id == NULL) {
if (wpa_config_set(wpa_s->current_ssid, "anonymous_identity",
"NULL", 0) < 0)
return;
} else {
str = os_malloc(len * 2 + 1);
if (str == NULL)
return;
wpa_snprintf_hex(str, len * 2 + 1, id, len);
res = wpa_config_set(wpa_s->current_ssid, "anonymous_identity",
str, 0);
os_free(str);
if (res < 0)
return;
}
}
static int test_eapol(struct eapol_test_data *e, struct wpa_supplicant *wpa_s,
struct wpa_ssid *ssid)
{
struct eapol_config eapol_conf;
struct eapol_ctx *ctx;
ctx = os_zalloc(sizeof(*ctx));
if (ctx == NULL) {
printf("Failed to allocate EAPOL context.\n");
return -1;
}
ctx->ctx = e;
ctx->msg_ctx = wpa_s;
ctx->scard_ctx = wpa_s->scard;
ctx->cb = eapol_sm_cb;
ctx->cb_ctx = e;
ctx->eapol_send_ctx = wpa_s;
ctx->preauth = 0;
ctx->eapol_done_cb = eapol_test_eapol_done_cb;
ctx->eapol_send = eapol_test_eapol_send;
ctx->set_config_blob = eapol_test_set_config_blob;
ctx->get_config_blob = eapol_test_get_config_blob;
ctx->opensc_engine_path = wpa_s->conf->opensc_engine_path;
ctx->pkcs11_engine_path = wpa_s->conf->pkcs11_engine_path;
ctx->pkcs11_module_path = wpa_s->conf->pkcs11_module_path;
ctx->eap_param_needed = eapol_test_eap_param_needed;
ctx->cert_cb = eapol_test_cert_cb;
ctx->cert_in_cb = 1;
ctx->set_anon_id = eapol_test_set_anon_id;
wpa_s->eapol = eapol_sm_init(ctx);
if (wpa_s->eapol == NULL) {
os_free(ctx);
printf("Failed to initialize EAPOL state machines.\n");
return -1;
}
wpa_s->current_ssid = ssid;
os_memset(&eapol_conf, 0, sizeof(eapol_conf));
eapol_conf.accept_802_1x_keys = 1;
eapol_conf.required_keys = 0;
eapol_conf.fast_reauth = wpa_s->conf->fast_reauth;
eapol_conf.workaround = ssid->eap_workaround;
eapol_conf.external_sim = wpa_s->conf->external_sim;
eapol_sm_notify_config(wpa_s->eapol, &ssid->eap, &eapol_conf);
eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard);
eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
/* 802.1X::portControl = Auto */
eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
return 0;
}
static void test_eapol_clean(struct eapol_test_data *e,
struct wpa_supplicant *wpa_s)
{
struct extra_radius_attr *p, *prev;
radius_client_deinit(e->radius);
wpabuf_free(e->last_eap_radius);
radius_msg_free(e->last_recv_radius);
e->last_recv_radius = NULL;
os_free(e->eap_identity);
e->eap_identity = NULL;
eapol_sm_deinit(wpa_s->eapol);
wpa_s->eapol = NULL;
if (e->radius_conf && e->radius_conf->auth_server) {
os_free(e->radius_conf->auth_server->shared_secret);
os_free(e->radius_conf->auth_server);
}
os_free(e->radius_conf);
e->radius_conf = NULL;
scard_deinit(wpa_s->scard);
if (wpa_s->ctrl_iface) {
wpa_supplicant_ctrl_iface_deinit(wpa_s->ctrl_iface);
wpa_s->ctrl_iface = NULL;
}
ext_password_deinit(wpa_s->ext_pw);
wpa_s->ext_pw = NULL;
wpa_config_free(wpa_s->conf);
p = e->extra_attrs;
while (p) {
prev = p;
p = p->next;
os_free(prev);
}
}
static void send_eap_request_identity(void *eloop_ctx, void *timeout_ctx)
{
struct wpa_supplicant *wpa_s = eloop_ctx;
u8 buf[100], *pos;
struct ieee802_1x_hdr *hdr;
struct eap_hdr *eap;
hdr = (struct ieee802_1x_hdr *) buf;
hdr->version = EAPOL_VERSION;
hdr->type = IEEE802_1X_TYPE_EAP_PACKET;
hdr->length = htons(5);
eap = (struct eap_hdr *) (hdr + 1);
eap->code = EAP_CODE_REQUEST;
eap->identifier = 0;
eap->length = htons(5);
pos = (u8 *) (eap + 1);
*pos = EAP_TYPE_IDENTITY;
printf("Sending fake EAP-Request-Identity\n");
eapol_sm_rx_eapol(wpa_s->eapol, wpa_s->bssid, buf,
sizeof(*hdr) + 5);
}
static void eapol_test_timeout(void *eloop_ctx, void *timeout_ctx)
{
struct eapol_test_data *e = eloop_ctx;
printf("EAPOL test timed out\n");
e->auth_timed_out = 1;
eloop_terminate();
}
static char *eap_type_text(u8 type)
{
switch (type) {
case EAP_TYPE_IDENTITY: return "Identity";
case EAP_TYPE_NOTIFICATION: return "Notification";
case EAP_TYPE_NAK: return "Nak";
case EAP_TYPE_TLS: return "TLS";
case EAP_TYPE_TTLS: return "TTLS";
case EAP_TYPE_PEAP: return "PEAP";
case EAP_TYPE_SIM: return "SIM";
case EAP_TYPE_GTC: return "GTC";
case EAP_TYPE_MD5: return "MD5";
case EAP_TYPE_OTP: return "OTP";
case EAP_TYPE_FAST: return "FAST";
case EAP_TYPE_SAKE: return "SAKE";
case EAP_TYPE_PSK: return "PSK";
default: return "Unknown";
}
}
static void ieee802_1x_decapsulate_radius(struct eapol_test_data *e)
{
struct wpabuf *eap;
const struct eap_hdr *hdr;
int eap_type = -1;
char buf[64];
struct radius_msg *msg;
if (e->last_recv_radius == NULL)
return;
msg = e->last_recv_radius;
eap = radius_msg_get_eap(msg);
if (eap == NULL) {
/* draft-aboba-radius-rfc2869bis-20.txt, Chap. 2.6.3:
* RADIUS server SHOULD NOT send Access-Reject/no EAP-Message
* attribute */
wpa_printf(MSG_DEBUG, "could not extract "
"EAP-Message from RADIUS message");
wpabuf_free(e->last_eap_radius);
e->last_eap_radius = NULL;
return;
}
if (wpabuf_len(eap) < sizeof(*hdr)) {
wpa_printf(MSG_DEBUG, "too short EAP packet "
"received from authentication server");
wpabuf_free(eap);
return;
}
if (wpabuf_len(eap) > sizeof(*hdr))
eap_type = (wpabuf_head_u8(eap))[sizeof(*hdr)];
hdr = wpabuf_head(eap);
switch (hdr->code) {
case EAP_CODE_REQUEST:
os_snprintf(buf, sizeof(buf), "EAP-Request-%s (%d)",
eap_type >= 0 ? eap_type_text(eap_type) : "??",
eap_type);
break;
case EAP_CODE_RESPONSE:
os_snprintf(buf, sizeof(buf), "EAP Response-%s (%d)",
eap_type >= 0 ? eap_type_text(eap_type) : "??",
eap_type);
break;
case EAP_CODE_SUCCESS:
os_strlcpy(buf, "EAP Success", sizeof(buf));
/* LEAP uses EAP Success within an authentication, so must not
* stop here with eloop_terminate(); */
break;
case EAP_CODE_FAILURE:
os_strlcpy(buf, "EAP Failure", sizeof(buf));
eloop_terminate();
break;
default:
os_strlcpy(buf, "unknown EAP code", sizeof(buf));
wpa_hexdump_buf(MSG_DEBUG, "Decapsulated EAP packet", eap);
break;
}
wpa_printf(MSG_DEBUG, "decapsulated EAP packet (code=%d "
"id=%d len=%d) from RADIUS server: %s",
hdr->code, hdr->identifier, ntohs(hdr->length), buf);
/* sta->eapol_sm->be_auth.idFromServer = hdr->identifier; */
wpabuf_free(e->last_eap_radius);
e->last_eap_radius = eap;
{
struct ieee802_1x_hdr *dot1x;
dot1x = os_malloc(sizeof(*dot1x) + wpabuf_len(eap));
assert(dot1x != NULL);
dot1x->version = EAPOL_VERSION;
dot1x->type = IEEE802_1X_TYPE_EAP_PACKET;
dot1x->length = htons(wpabuf_len(eap));
os_memcpy((u8 *) (dot1x + 1), wpabuf_head(eap),
wpabuf_len(eap));
eapol_sm_rx_eapol(e->wpa_s->eapol, e->wpa_s->bssid,
(u8 *) dot1x,
sizeof(*dot1x) + wpabuf_len(eap));
os_free(dot1x);
}
}
static void ieee802_1x_get_keys(struct eapol_test_data *e,
struct radius_msg *msg, struct radius_msg *req,
const u8 *shared_secret,
size_t shared_secret_len)
{
struct radius_ms_mppe_keys *keys;
u8 *buf;
size_t len;
keys = radius_msg_get_ms_keys(msg, req, shared_secret,
shared_secret_len);
if (keys && keys->send == NULL && keys->recv == NULL) {
os_free(keys);
keys = radius_msg_get_cisco_keys(msg, req, shared_secret,
shared_secret_len);
}
if (keys) {
if (keys->send) {
wpa_hexdump(MSG_DEBUG, "MS-MPPE-Send-Key (sign)",
keys->send, keys->send_len);
}
if (keys->recv) {
wpa_hexdump(MSG_DEBUG, "MS-MPPE-Recv-Key (crypt)",
keys->recv, keys->recv_len);
e->authenticator_pmk_len =
keys->recv_len > PMK_LEN ? PMK_LEN :
keys->recv_len;
os_memcpy(e->authenticator_pmk, keys->recv,
e->authenticator_pmk_len);
if (e->authenticator_pmk_len == 16 && keys->send &&
keys->send_len == 16) {
/* MS-CHAP-v2 derives 16 octet keys */
wpa_printf(MSG_DEBUG, "Use MS-MPPE-Send-Key "
"to extend PMK to 32 octets");
os_memcpy(e->authenticator_pmk +
e->authenticator_pmk_len,
keys->send, keys->send_len);
e->authenticator_pmk_len += keys->send_len;
}
}
os_free(keys->send);
os_free(keys->recv);
os_free(keys);
}
if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_EAP_KEY_NAME, &buf, &len,
NULL) == 0) {
os_memcpy(e->authenticator_eap_key_name, buf, len);
e->authenticator_eap_key_name_len = len;
} else {
e->authenticator_eap_key_name_len = 0;
}
}
/* Process the RADIUS frames from Authentication Server */
static RadiusRxResult
ieee802_1x_receive_auth(struct radius_msg *msg, struct radius_msg *req,
const u8 *shared_secret, size_t shared_secret_len,
void *data)
{
struct eapol_test_data *e = data;
struct radius_hdr *hdr = radius_msg_get_hdr(msg);
/* RFC 2869, Ch. 5.13: valid Message-Authenticator attribute MUST be
* present when packet contains an EAP-Message attribute */
if (hdr->code == RADIUS_CODE_ACCESS_REJECT &&
radius_msg_get_attr(msg, RADIUS_ATTR_MESSAGE_AUTHENTICATOR, NULL,
0) < 0 &&
radius_msg_get_attr(msg, RADIUS_ATTR_EAP_MESSAGE, NULL, 0) < 0) {
wpa_printf(MSG_DEBUG, "Allowing RADIUS "
"Access-Reject without Message-Authenticator "
"since it does not include EAP-Message\n");
} else if (radius_msg_verify(msg, shared_secret, shared_secret_len,
req, 1)) {
printf("Incoming RADIUS packet did not have correct "
"Message-Authenticator - dropped\n");
return RADIUS_RX_UNKNOWN;
}
if (hdr->code != RADIUS_CODE_ACCESS_ACCEPT &&
hdr->code != RADIUS_CODE_ACCESS_REJECT &&
hdr->code != RADIUS_CODE_ACCESS_CHALLENGE) {
printf("Unknown RADIUS message code\n");
return RADIUS_RX_UNKNOWN;
}
e->radius_identifier = -1;
wpa_printf(MSG_DEBUG, "RADIUS packet matching with station");
radius_msg_free(e->last_recv_radius);
e->last_recv_radius = msg;
switch (hdr->code) {
case RADIUS_CODE_ACCESS_ACCEPT:
e->radius_access_accept_received = 1;
ieee802_1x_get_keys(e, msg, req, shared_secret,
shared_secret_len);
break;
case RADIUS_CODE_ACCESS_REJECT:
e->radius_access_reject_received = 1;
break;
}
ieee802_1x_decapsulate_radius(e);
if ((hdr->code == RADIUS_CODE_ACCESS_ACCEPT &&
e->eapol_test_num_reauths < 0) ||
hdr->code == RADIUS_CODE_ACCESS_REJECT) {
eloop_terminate();
}
return RADIUS_RX_QUEUED;
}
static void wpa_init_conf(struct eapol_test_data *e,
struct wpa_supplicant *wpa_s, const char *authsrv,
int port, const char *secret,
const char *cli_addr)
{
struct hostapd_radius_server *as;
int res;
wpa_s->bssid[5] = 1;
os_memcpy(wpa_s->own_addr, e->own_addr, ETH_ALEN);
e->own_ip_addr.s_addr = htonl((127 << 24) | 1);
os_strlcpy(wpa_s->ifname, "test", sizeof(wpa_s->ifname));
e->radius_conf = os_zalloc(sizeof(struct hostapd_radius_servers));
assert(e->radius_conf != NULL);
e->radius_conf->num_auth_servers = 1;
as = os_zalloc(sizeof(struct hostapd_radius_server));
assert(as != NULL);
#if defined(CONFIG_NATIVE_WINDOWS) || defined(CONFIG_ANSI_C_EXTRA)
{
int a[4];
u8 *pos;
sscanf(authsrv, "%d.%d.%d.%d", &a[0], &a[1], &a[2], &a[3]);
pos = (u8 *) &as->addr.u.v4;
*pos++ = a[0];
*pos++ = a[1];
*pos++ = a[2];
*pos++ = a[3];
}
#else /* CONFIG_NATIVE_WINDOWS or CONFIG_ANSI_C_EXTRA */
inet_aton(authsrv, &as->addr.u.v4);
#endif /* CONFIG_NATIVE_WINDOWS or CONFIG_ANSI_C_EXTRA */
as->addr.af = AF_INET;
as->port = port;
as->shared_secret = (u8 *) os_strdup(secret);
as->shared_secret_len = os_strlen(secret);
e->radius_conf->auth_server = as;
e->radius_conf->auth_servers = as;
e->radius_conf->msg_dumps = 1;
if (cli_addr) {
if (hostapd_parse_ip_addr(cli_addr,
&e->radius_conf->client_addr) == 0)
e->radius_conf->force_client_addr = 1;
else {
wpa_printf(MSG_ERROR, "Invalid IP address '%s'",
cli_addr);
assert(0);
}
}
e->radius = radius_client_init(wpa_s, e->radius_conf);
assert(e->radius != NULL);
res = radius_client_register(e->radius, RADIUS_AUTH,
ieee802_1x_receive_auth, e);
assert(res == 0);
}
static int scard_test(void)
{
struct scard_data *scard;
size_t len;
char imsi[20];
unsigned char _rand[16];
#ifdef PCSC_FUNCS
unsigned char sres[4];
unsigned char kc[8];
#endif /* PCSC_FUNCS */
#define num_triplets 5
unsigned char rand_[num_triplets][16];
unsigned char sres_[num_triplets][4];
unsigned char kc_[num_triplets][8];
int i, res;
size_t j;
#define AKA_RAND_LEN 16
#define AKA_AUTN_LEN 16
#define AKA_AUTS_LEN 14
#define RES_MAX_LEN 16
#define IK_LEN 16
#define CK_LEN 16
unsigned char aka_rand[AKA_RAND_LEN];
unsigned char aka_autn[AKA_AUTN_LEN];
unsigned char aka_auts[AKA_AUTS_LEN];
unsigned char aka_res[RES_MAX_LEN];
size_t aka_res_len;
unsigned char aka_ik[IK_LEN];
unsigned char aka_ck[CK_LEN];
scard = scard_init(NULL);
if (scard == NULL)
return -1;
if (scard_set_pin(scard, "1234")) {
wpa_printf(MSG_WARNING, "PIN validation failed");
scard_deinit(scard);
return -1;
}
len = sizeof(imsi);
if (scard_get_imsi(scard, imsi, &len))
goto failed;
wpa_hexdump_ascii(MSG_DEBUG, "SCARD: IMSI", (u8 *) imsi, len);
/* NOTE: Permanent Username: 1 | IMSI */
wpa_printf(MSG_DEBUG, "SCARD: MNC length %d",
scard_get_mnc_len(scard));
os_memset(_rand, 0, sizeof(_rand));
if (scard_gsm_auth(scard, _rand, sres, kc))
goto failed;
os_memset(_rand, 0xff, sizeof(_rand));
if (scard_gsm_auth(scard, _rand, sres, kc))
goto failed;
for (i = 0; i < num_triplets; i++) {
os_memset(rand_[i], i, sizeof(rand_[i]));
if (scard_gsm_auth(scard, rand_[i], sres_[i], kc_[i]))
goto failed;
}
for (i = 0; i < num_triplets; i++) {
printf("1");
for (j = 0; j < len; j++)
printf("%c", imsi[j]);
printf(",");
for (j = 0; j < 16; j++)
printf("%02X", rand_[i][j]);
printf(",");
for (j = 0; j < 4; j++)
printf("%02X", sres_[i][j]);
printf(",");
for (j = 0; j < 8; j++)
printf("%02X", kc_[i][j]);
printf("\n");
}
wpa_printf(MSG_DEBUG, "Trying to use UMTS authentication");
/* seq 39 (0x28) */
os_memset(aka_rand, 0xaa, 16);
os_memcpy(aka_autn, "\x86\x71\x31\xcb\xa2\xfc\x61\xdf"
"\xa3\xb3\x97\x9d\x07\x32\xa2\x12", 16);
res = scard_umts_auth(scard, aka_rand, aka_autn, aka_res, &aka_res_len,
aka_ik, aka_ck, aka_auts);
if (res == 0) {
wpa_printf(MSG_DEBUG, "UMTS auth completed successfully");
wpa_hexdump(MSG_DEBUG, "RES", aka_res, aka_res_len);
wpa_hexdump(MSG_DEBUG, "IK", aka_ik, IK_LEN);
wpa_hexdump(MSG_DEBUG, "CK", aka_ck, CK_LEN);
} else if (res == -2) {
wpa_printf(MSG_DEBUG, "UMTS auth resulted in synchronization "
"failure");
wpa_hexdump(MSG_DEBUG, "AUTS", aka_auts, AKA_AUTS_LEN);
} else {
wpa_printf(MSG_DEBUG, "UMTS auth failed");
}
failed:
scard_deinit(scard);
return 0;
#undef num_triplets
}
static int scard_get_triplets(int argc, char *argv[])
{
struct scard_data *scard;
size_t len;
char imsi[20];
unsigned char _rand[16];
unsigned char sres[4];
unsigned char kc[8];
int num_triplets;
int i;
size_t j;
if (argc < 2 || ((num_triplets = atoi(argv[1])) <= 0)) {
printf("invalid parameters for sim command\n");
return -1;
}
if (argc <= 2 || os_strcmp(argv[2], "debug") != 0) {
/* disable debug output */
wpa_debug_level = 99;
}
scard = scard_init(NULL);
if (scard == NULL) {
printf("Failed to open smartcard connection\n");
return -1;
}
if (scard_set_pin(scard, argv[0])) {
wpa_printf(MSG_WARNING, "PIN validation failed");
scard_deinit(scard);
return -1;
}
len = sizeof(imsi);
if (scard_get_imsi(scard, imsi, &len)) {
scard_deinit(scard);
return -1;
}
for (i = 0; i < num_triplets; i++) {
os_memset(_rand, i, sizeof(_rand));
if (scard_gsm_auth(scard, _rand, sres, kc))
break;
/* IMSI:Kc:SRES:RAND */
for (j = 0; j < len; j++)
printf("%c", imsi[j]);
printf(":");
for (j = 0; j < 8; j++)
printf("%02X", kc[j]);
printf(":");
for (j = 0; j < 4; j++)
printf("%02X", sres[j]);
printf(":");
for (j = 0; j < 16; j++)
printf("%02X", _rand[j]);
printf("\n");
}
scard_deinit(scard);
return 0;
}
static void eapol_test_terminate(int sig, void *signal_ctx)
{
struct wpa_supplicant *wpa_s = signal_ctx;
wpa_msg(wpa_s, MSG_INFO, "Signal %d received - terminating", sig);
eloop_terminate();
}
static void usage(void)
{
printf("usage:\n"
"eapol_test [-enWS] -c<conf> [-a<AS IP>] [-p<AS port>] "
"[-s<AS secret>]\\\n"
" [-r<count>] [-t<timeout>] [-C<Connect-Info>] \\\n"
" [-M<client MAC address>] [-o<server cert file] \\\n"
" [-N<attr spec>] \\\n"
" [-A<client IP>]\n"
"eapol_test scard\n"
"eapol_test sim <PIN> <num triplets> [debug]\n"
"\n");
printf("options:\n"
" -c<conf> = configuration file\n"
" -a<AS IP> = IP address of the authentication server, "
"default 127.0.0.1\n"
" -p<AS port> = UDP port of the authentication server, "
"default 1812\n"
" -s<AS secret> = shared secret with the authentication "
"server, default 'radius'\n"
" -A<client IP> = IP address of the client, default: select "
"automatically\n"
" -r<count> = number of re-authentications\n"
" -e = Request EAP-Key-Name\n"
" -W = wait for a control interface monitor before starting\n"
" -S = save configuration after authentication\n"
" -n = no MPPE keys expected\n"
" -t<timeout> = sets timeout in seconds (default: 30 s)\n"
" -C<Connect-Info> = RADIUS Connect-Info (default: "
"CONNECT 11Mbps 802.11b)\n"
" -M<client MAC address> = Set own MAC address "
"(Calling-Station-Id,\n"
" default: 02:00:00:00:00:01)\n"
" -o<server cert file> = Write received server certificate\n"
" chain to the specified file\n"
" -N<attr spec> = send arbitrary attribute specified by:\n"
" attr_id:syntax:value or attr_id\n"
" attr_id - number id of the attribute\n"
" syntax - one of: s, d, x\n"
" s = string\n"
" d = integer\n"
" x = octet string\n"
" value - attribute value.\n"
" When only attr_id is specified, NULL will be used as "
"value.\n"
" Multiple attributes can be specified by using the "
"option several times.\n");
}
int main(int argc, char *argv[])
{
struct wpa_global global;
struct wpa_supplicant wpa_s;
int c, ret = 1, wait_for_monitor = 0, save_config = 0;
char *as_addr = "127.0.0.1";
int as_port = 1812;
char *as_secret = "radius";
char *cli_addr = NULL;
char *conf = NULL;
int timeout = 30;
char *pos;
struct extra_radius_attr *p = NULL, *p1;
if (os_program_init())
return -1;
hostapd_logger_register_cb(hostapd_logger_cb);
os_memset(&eapol_test, 0, sizeof(eapol_test));
eapol_test.connect_info = "CONNECT 11Mbps 802.11b";
os_memcpy(eapol_test.own_addr, "\x02\x00\x00\x00\x00\x01", ETH_ALEN);
wpa_debug_level = 0;
wpa_debug_show_keys = 1;
for (;;) {
c = getopt(argc, argv, "a:A:c:C:eM:nN:o:p:r:s:St:W");
if (c < 0)
break;
switch (c) {
case 'a':
as_addr = optarg;
break;
case 'A':
cli_addr = optarg;
break;
case 'c':
conf = optarg;
break;
case 'C':
eapol_test.connect_info = optarg;
break;
case 'e':
eapol_test.req_eap_key_name = 1;
break;
case 'M':
if (hwaddr_aton(optarg, eapol_test.own_addr)) {
usage();
return -1;
}
break;
case 'n':
eapol_test.no_mppe_keys++;
break;
case 'o':
if (eapol_test.server_cert_file)
fclose(eapol_test.server_cert_file);
eapol_test.server_cert_file = fopen(optarg, "w");
if (eapol_test.server_cert_file == NULL) {
printf("Could not open '%s' for writing\n",
optarg);
return -1;
}
break;
case 'p':
as_port = atoi(optarg);
break;
case 'r':
eapol_test.eapol_test_num_reauths = atoi(optarg);
break;
case 's':
as_secret = optarg;
break;
case 'S':
save_config++;
break;
case 't':
timeout = atoi(optarg);
break;
case 'W':
wait_for_monitor++;
break;
case 'N':
p1 = os_zalloc(sizeof(*p1));
if (p1 == NULL)
break;
if (!p)
eapol_test.extra_attrs = p1;
else
p->next = p1;
p = p1;
p->type = atoi(optarg);
pos = os_strchr(optarg, ':');
if (pos == NULL) {
p->syntax = 'n';
p->data = NULL;
break;
}
pos++;
if (pos[0] == '\0' || pos[1] != ':') {
printf("Incorrect format of attribute "
"specification\n");
break;
}
p->syntax = pos[0];
p->data = pos + 2;
break;
default:
usage();
return -1;
}
}
if (argc > optind && os_strcmp(argv[optind], "scard") == 0) {
return scard_test();
}
if (argc > optind && os_strcmp(argv[optind], "sim") == 0) {
return scard_get_triplets(argc - optind - 1,
&argv[optind + 1]);
}
if (conf == NULL) {
usage();
printf("Configuration file is required.\n");
return -1;
}
if (eap_register_methods()) {
wpa_printf(MSG_ERROR, "Failed to register EAP methods");
return -1;
}
if (eloop_init()) {
wpa_printf(MSG_ERROR, "Failed to initialize event loop");
return -1;
}
os_memset(&global, 0, sizeof(global));
os_memset(&wpa_s, 0, sizeof(wpa_s));
wpa_s.global = &global;
eapol_test.wpa_s = &wpa_s;
dl_list_init(&wpa_s.bss);
dl_list_init(&wpa_s.bss_id);
wpa_s.conf = wpa_config_read(conf, NULL);
if (wpa_s.conf == NULL) {
printf("Failed to parse configuration file '%s'.\n", conf);
return -1;
}
if (wpa_s.conf->ssid == NULL) {
printf("No networks defined.\n");
return -1;
}
wpa_init_conf(&eapol_test, &wpa_s, as_addr, as_port, as_secret,
cli_addr);
wpa_s.ctrl_iface = wpa_supplicant_ctrl_iface_init(&wpa_s);
if (wpa_s.ctrl_iface == NULL) {
printf("Failed to initialize control interface '%s'.\n"
"You may have another eapol_test process already "
"running or the file was\n"
"left by an unclean termination of eapol_test in "
"which case you will need\n"
"to manually remove this file before starting "
"eapol_test again.\n",
wpa_s.conf->ctrl_interface);
return -1;
}
if (wpa_supplicant_scard_init(&wpa_s, wpa_s.conf->ssid))
return -1;
if (test_eapol(&eapol_test, &wpa_s, wpa_s.conf->ssid))
return -1;
if (wpas_init_ext_pw(&wpa_s) < 0)
return -1;
if (wait_for_monitor)
wpa_supplicant_ctrl_iface_wait(wpa_s.ctrl_iface);
eloop_register_timeout(timeout, 0, eapol_test_timeout, &eapol_test,
NULL);
eloop_register_timeout(0, 0, send_eap_request_identity, &wpa_s, NULL);
eloop_register_signal_terminate(eapol_test_terminate, &wpa_s);
eloop_register_signal_reconfig(eapol_test_terminate, &wpa_s);
eloop_run();
eloop_cancel_timeout(eapol_test_timeout, &eapol_test, NULL);
eloop_cancel_timeout(eapol_sm_reauth, &eapol_test, NULL);
if (eapol_test_compare_pmk(&eapol_test) == 0 ||
eapol_test.no_mppe_keys)
ret = 0;
if (eapol_test.auth_timed_out)
ret = -2;
if (eapol_test.radius_access_reject_received)
ret = -3;
if (save_config)
wpa_config_write(conf, wpa_s.conf);
test_eapol_clean(&eapol_test, &wpa_s);
eap_peer_unregister_methods();
#ifdef CONFIG_AP
eap_server_unregister_methods();
#endif /* CONFIG_AP */
eloop_destroy();
if (eapol_test.server_cert_file)
fclose(eapol_test.server_cert_file);
printf("MPPE keys OK: %d mismatch: %d\n",
eapol_test.num_mppe_ok, eapol_test.num_mppe_mismatch);
if (eapol_test.num_mppe_mismatch)
ret = -4;
if (ret)
printf("FAILURE\n");
else
printf("SUCCESS\n");
os_program_deinit();
return ret;
}
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