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eapol_test.c
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/*
* WPA Supplicant - test code
* Copyright (c) 2003-2013, Jouni Malinen <[email protected]>
*
* 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 "common/version.h"
#include "crypto/tls.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"
const struct wpa_driver_ops *const 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;
const char *pcsc_reader;
const char *pcsc_pin;
unsigned int ctrl_iface:1;
unsigned int id_req_sent:1;
};
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);
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;
}
if (!find_extra_attr(e->extra_attrs, RADIUS_ATTR_SERVICE_TYPE) &&
!radius_msg_add_attr_int32(msg, RADIUS_ATTR_SERVICE_TYPE,
RADIUS_SERVICE_TYPE_FRAMED)) {
printf("Could not add Service-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)
{
struct eapol_test_data *e = ctx;
printf("WPA: EAPOL processing complete\n");
wpa_supplicant_cancel_auth_timeout(e->wpa_s);
wpa_supplicant_set_state(e->wpa_s, WPA_COMPLETED);
}
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->id_req_sent = 0;
if (e->ctrl_iface)
return;
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 (os_snprintf_error(buflen, len)) {
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, struct tls_cert_data *cert,
const char *cert_hash)
{
struct eapol_test_data *e = ctx;
int i;
wpa_msg(e->wpa_s, MSG_INFO, WPA_EVENT_EAP_PEER_CERT
"depth=%d subject='%s'%s%s",
cert->depth, cert->subject,
cert_hash ? " hash=" : "",
cert_hash ? cert_hash : "");
if (cert->cert) {
char *cert_hex;
size_t len = wpabuf_len(cert->cert) * 2 + 1;
cert_hex = os_malloc(len);
if (cert_hex) {
wpa_snprintf_hex(cert_hex, len, wpabuf_head(cert->cert),
wpabuf_len(cert->cert));
wpa_msg_ctrl(e->wpa_s, MSG_INFO,
WPA_EVENT_EAP_PEER_CERT
"depth=%d subject='%s' cert=%s",
cert->depth, cert->subject, cert_hex);
os_free(cert_hex);
}
if (e->server_cert_file)
eapol_test_write_cert(e->server_cert_file,
cert->subject, cert->cert);
}
for (i = 0; i < cert->num_altsubject; i++)
wpa_msg(e->wpa_s, MSG_INFO, WPA_EVENT_EAP_PEER_ALT
"depth=%d %s", cert->depth, cert->altsubject[i]);
}
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 enum wpa_states eapol_test_get_state(void *ctx)
{
struct eapol_test_data *e = ctx;
struct wpa_supplicant *wpa_s = e->wpa_s;
return wpa_s->wpa_state;
}
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;
struct wpa_sm_ctx *wctx;
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->openssl_ciphers = wpa_s->conf->openssl_ciphers;
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->key_mgmt = WPA_KEY_MGMT_IEEE8021X_NO_WPA;
wctx = os_zalloc(sizeof(*wctx));
if (wctx == NULL) {
os_free(ctx);
return -1;
}
wctx->ctx = e;
wctx->msg_ctx = wpa_s;
wctx->get_state = eapol_test_get_state;
wpa_s->wpa = wpa_sm_init(wctx);
if (!wpa_s->wpa) {
os_free(ctx);
os_free(wctx);
return -1;
}
if (!ssid)
return 0;
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;
wpa_sm_deinit(wpa_s->wpa);
wpa_s->wpa = NULL;
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;
if (os_get_random((u8 *) &eap->identifier, sizeof(eap->identifier)) < 0)
eap->identifier = os_random() & 0xff;
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));
if (e->ctrl_iface)
break;
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) {
if (!e->ctrl_iface)
eloop_terminate();
}
return RADIUS_RX_QUEUED;
}
static int driver_get_ssid(void *priv, u8 *ssid)
{
ssid[0] = 0;
return 0;
}
static int driver_get_bssid(void *priv, u8 *bssid)
{
struct eapol_test_data *e = priv;
if (e->ctrl_iface && !e->id_req_sent) {
eloop_register_timeout(0, 0, send_eap_request_identity,
e->wpa_s, NULL);
e->id_req_sent = 1;
}
os_memset(bssid, 0, ETH_ALEN);
bssid[5] = 1;
return 0;
}
static int driver_get_capa(void *priv, struct wpa_driver_capa *capa)
{
os_memset(capa, 0, sizeof(*capa));
capa->flags = WPA_DRIVER_FLAGS_WIRED;
return 0;
}
struct wpa_driver_ops eapol_test_drv_ops = {
.name = "test",
.get_ssid = driver_get_ssid,
.get_bssid = driver_get_bssid,
.get_capa = driver_get_capa,
};
static void wpa_init_conf(struct eapol_test_data *e,
struct wpa_supplicant *wpa_s, const char *authsrv,
int port, const char *secret,