void eap_opaque_free(eap_handler_t *handler)
{
if (!handler)
return;
eap_handler_free(handler->inst_holder, handler);
}
static void eaplist_free(rlm_eap_t *inst)
{
EAP_HANDLER *node, *next;
for (node = inst->session_head; node != NULL; node = next) {
next = node->next;
eap_handler_free(node);
}
inst->session_head = inst->session_tail = NULL;
}
void eaplist_free(rlm_eap_t *inst)
{
eap_handler_t *node, *next;
for (node = inst->session_head; node != NULL; node = next) {
next = node->next;
eap_handler_free(inst, node);
}
inst->session_head = inst->session_tail = NULL;
}
static int eap_post_auth(void *instance, REQUEST *request)
{
rlm_eap_t *inst = instance;
VALUE_PAIR *vp;
EAP_HANDLER *handler;
eap_packet_t *eap_packet;
/*
* Only build a failure message if something previously rejected the request
*/
vp = pairfind(request->config_items, PW_POSTAUTHTYPE, 0, TAG_ANY);
if (!vp || (vp->vp_integer != PW_POSTAUTHTYPE_REJECT)) return RLM_MODULE_NOOP;
if (!pairfind(request->packet->vps, PW_EAP_MESSAGE, 0, TAG_ANY)) {
RDEBUG2("Request didn't contain an EAP-Message, not inserting EAP-Failure");
return RLM_MODULE_NOOP;
}
if (pairfind(request->reply->vps, PW_EAP_MESSAGE, 0, TAG_ANY)) {
RDEBUG2("Reply already contained an EAP-Message, not inserting EAP-Failure");
return RLM_MODULE_NOOP;
}
eap_packet = eap_vp2packet(request->packet->vps);
if (eap_packet == NULL) {
radlog_request(L_ERR, 0, request, "Malformed EAP Message");
return RLM_MODULE_FAIL;
}
handler = eap_handler(inst, &eap_packet, request);
if (handler == NULL) {
RDEBUG2("Failed to get handler, probably already removed, not inserting EAP-Failure");
return RLM_MODULE_NOOP;
}
RDEBUG2("Request was previously rejected, inserting EAP-Failure");
eap_fail(handler);
eap_handler_free(inst, handler);
/*
* Make sure there's a message authenticator attribute in the response
* RADIUS protocol code will calculate the correct value later...
*/
vp = pairfind(request->reply->vps, PW_MESSAGE_AUTHENTICATOR, 0, TAG_ANY);
if (!vp) {
vp = pairmake("Message-Authenticator",
"0x00", T_OP_EQ);
rad_assert(vp != NULL);
pairadd(&(request->reply->vps), vp);
}
return RLM_MODULE_UPDATED;
}
static void eaplist_expire(rlm_eap_t *inst, REQUEST *request, time_t timestamp)
{
int i;
eap_handler_t *handler;
/*
* Check the first few handlers in the list, and delete
* them if they're too old. We don't need to check them
* all, as incoming requests will quickly cause older
* handlers to be deleted.
*
*/
for (i = 0; i < 3; i++) {
handler = inst->session_head;
if (!handler) break;
RDEBUG("Expiring EAP session with state "
"0x%02x%02x%02x%02x%02x%02x%02x%02x",
handler->state[0], handler->state[1],
handler->state[2], handler->state[3],
handler->state[4], handler->state[5],
handler->state[6], handler->state[7]);
/*
* Expire entries from the start of the list.
* They should be the oldest ones.
*/
if ((timestamp - handler->timestamp) > inst->timer_limit) {
rbnode_t *node;
node = rbtree_find(inst->session_tree, handler);
rad_assert(node != NULL);
rbtree_delete(inst->session_tree, node);
/*
* handler == inst->session_head
*/
inst->session_head = handler->next;
if (handler->next) {
handler->next->prev = NULL;
} else {
inst->session_head = NULL;
inst->session_tail = NULL;
}
eap_handler_free(inst, handler);
} else {
break;
}
}
}
void eaplist_free(EAP_HANDLER **list)
{
EAP_HANDLER *node, *next;
if (!list) return;
node = *list;
while (node) {
next = node->next;
eap_handler_free(&node);
node = next;
}
*list = NULL;
}
/*
* List should contain only recent packets with life < x seconds.
*/
void eaplist_clean(EAP_HANDLER **first, time_t limit)
{
time_t now;
EAP_HANDLER *node, *next;
EAP_HANDLER **last = first;
now = time(NULL);
for (node = *first; node; node = next) {
next = node->next;
if ((now - node->timestamp) > limit) {
DEBUG2(" rlm_eap: list_clean deleted one item");
*last = next;
eap_handler_free(&node);
} else {
last = &(node->next);
}
}
}
/*
* Do EAP.
*/
static rlm_rcode_t eap_authenticate(void *instance, REQUEST *request)
{
rlm_eap_t *inst;
EAP_HANDLER *handler;
void *data;
int data_len;
rlm_rcode_t rcode;
VALUE_PAIR *vp;
inst = (rlm_eap_t *) instance;
vp = pairfind(request->packet->vps, PW_EAP_MESSAGE, 0, TAG_ANY);
if (!vp) {
RDEBUG("No EAP-Message. Not doing EAP.");
return RLM_MODULE_FAIL;
}
/*
* Get the eap packet to start with
*/
data = NULL;
data_len = 0;
if (eap_vp2data(request->packet->vps, &data, &data_len) < 0) {
radlog(L_ERR, "rlm_eap2: Malformed EAP Message");
return RLM_MODULE_FAIL;
}
vp = pairfind(request->packet->vps, PW_STATE, 0, TAG_ANY);
if (vp) {
handler = eaplist_find(inst, request);
if (!handler) {
RDEBUG("No handler found");
return RLM_MODULE_FAIL;
}
} else {
handler = malloc(sizeof(*handler));
if (!handler) return RLM_MODULE_FAIL;
memset(handler, 0, sizeof(*handler));
handler->inst = inst;
handler->eap_cb.get_eap_user = server_get_eap_user;
handler->eap_cb.get_eap_req_id_text = server_get_eap_req_id_text;
handler->eap_conf.eap_server = 1;
handler->eap_conf.ssl_ctx = inst->tls_ctx;
/*
* Copy EAP-FAST parameters.
*/
handler->eap_conf.pac_opaque_encr_key = inst->pac_opaque_encr_key;
handler->eap_conf.eap_fast_a_id = inst->eap_fast_a_id;
handler->eap_conf.eap_fast_a_id_len = strlen(inst->eap_fast_a_id);
handler->eap_conf.eap_fast_a_id_info = inst->eap_fast_a_id_info;
handler->eap_conf.eap_fast_prov = inst->eap_fast_prov;
handler->eap_conf.pac_key_lifetime = inst->pac_key_lifetime;
handler->eap_conf.pac_key_refresh_time = inst->pac_key_refresh_time;
handler->eap_conf.backend_auth = inst->backend_auth;
handler->server_ctx.eap = eap_server_sm_init(handler,
&handler->eap_cb,
&handler->eap_conf);
if (handler->server_ctx.eap == NULL) {
free(handler);
return RLM_MODULE_FAIL;
}
handler->server_ctx.eap_if = eap_get_interface(handler->server_ctx.eap);
/* Enable "port" and request EAP to start authentication. */
handler->server_ctx.eap_if->portEnabled = TRUE;
handler->server_ctx.eap_if->eapRestart = TRUE;
}
handler->request = request;
wpabuf_free(handler->server_ctx.eap_if->eapRespData);
handler->server_ctx.eap_if->eapRespData = wpabuf_alloc_copy(data, data_len);
if (handler->server_ctx.eap_if->eapRespData) {
handler->server_ctx.eap_if->eapResp = TRUE;
}
if (eap_example_server_step(handler) < 0) {
RDEBUG("Failed in EAP library");
goto fail;
}
if (handler->server_ctx.eap_if->eapSuccess) {
request->reply->code = PW_AUTHENTICATION_ACK;
rcode = RLM_MODULE_OK;
} else if (handler->server_ctx.eap_if->eapFail) {
fail:
request->reply->code = PW_AUTHENTICATION_REJECT;
rcode = RLM_MODULE_REJECT;
} else {
request->reply->code = PW_ACCESS_CHALLENGE;
rcode = RLM_MODULE_HANDLED;
}
if (handler->server_ctx.eap_if->eapFail ||
handler->server_ctx.eap_if->eapSuccess) {
RDEBUG2("Freeing handler");
/* handler is not required any more, free it now */
eap_handler_free(handler);
handler = NULL;
} else {
eaplist_add(inst, handler);
}
/*
* If it's an Access-Accept, RFC 2869, Section 2.3.1
* says that we MUST include a User-Name attribute in the
* Access-Accept.
*/
if ((request->reply->code == PW_AUTHENTICATION_ACK) &&
request->username) {
/*
* Doesn't exist, add it in.
*/
vp = pairfind(request->reply->vps, PW_USER_NAME, 0, TAG_ANY);
if (!vp) {
vp = pairmake("User-Name", request->username->vp_strvalue,
T_OP_EQ);
rad_assert(vp != NULL);
pairadd(&(request->reply->vps), vp);
}
/*
* Cisco AP1230 has a bug and needs a zero
* terminated string in Access-Accept.
*/
if ((inst->cisco_accounting_username_bug) &&
(vp->length < (int) sizeof(vp->vp_strvalue))) {
vp->vp_strvalue[vp->length] = '\0';
vp->length++;
}
}
vp = pairfind(request->reply->vps, PW_MESSAGE_AUTHENTICATOR, 0, TAG_ANY);
if (!vp) {
vp = paircreate(PW_MESSAGE_AUTHENTICATOR, PW_TYPE_OCTETS);
memset(vp->vp_strvalue, 0, AUTH_VECTOR_LEN);
vp->length = AUTH_VECTOR_LEN;
pairadd(&(request->reply->vps), vp);
}
return rcode;
}
/*
* Find a a previous EAP-Request sent by us, which matches
* the current EAP-Response.
*
* Then, release the handle from the list, and return it to
* the caller.
*
* Also since we fill the eap_ds with the present EAP-Response we
* got to free the prev_eapds & move the eap_ds to prev_eapds
*/
static EAP_HANDLER *eaplist_find(rlm_eap_t *inst, REQUEST *request)
{
int i;
VALUE_PAIR *state;
rbnode_t *node;
EAP_HANDLER *handler, myHandler;
/*
* We key the sessions off of the 'state' attribute, so it
* must exist.
*/
state = pairfind(request->packet->vps, PW_STATE, 0, TAG_ANY);
if (!state ||
(state->length != EAP_STATE_LEN)) {
return NULL;
}
myHandler.src_ipaddr = request->packet->src_ipaddr;
memcpy(myHandler.state, state->vp_strvalue, sizeof(myHandler.state));
/*
* Playing with a data structure shared among threads
* means that we need a lock, to avoid conflict.
*/
pthread_mutex_lock(&(inst->session_mutex));
/*
* Check the first few handlers in the list, and delete
* them if they're too old. We don't need to check them
* all, as incoming requests will quickly cause older
* handlers to be deleted.
*
*/
for (i = 0; i < 2; i++) {
handler = inst->session_head;
if (handler &&
((request->timestamp - handler->timestamp) > inst->timer_limit)) {
node = rbtree_find(inst->session_tree, handler);
rad_assert(node != NULL);
rbtree_delete(inst->session_tree, node);
/*
* handler == inst->session_head
*/
inst->session_head = handler->next;
if (handler->next) {
handler->next->prev = NULL;
} else {
inst->session_head = NULL;
}
eap_handler_free(handler);
}
}
handler = NULL;
node = rbtree_find(inst->session_tree, &myHandler);
if (node) {
handler = rbtree_node2data(inst->session_tree, node);
/*
* Delete old handler from the tree.
*/
rbtree_delete(inst->session_tree, node);
/*
* And unsplice it from the linked list.
*/
if (handler->prev) {
handler->prev->next = handler->next;
} else {
inst->session_head = handler->next;
}
if (handler->next) {
handler->next->prev = handler->prev;
} else {
inst->session_tail = handler->prev;
}
handler->prev = handler->next = NULL;
}
pthread_mutex_unlock(&(inst->session_mutex));
/*
* Not found.
*/
if (!node) {
RDEBUG2("Request not found in the list");
return NULL;
}
/*
* Found, but state verification failed.
*/
if (!handler) {
radlog(L_ERR, "rlm_eap2: State verification failed.");
return NULL;
}
RDEBUG2("Request found, released from the list");
return handler;
}
/*
* Add a handler to the set of active sessions.
*
* Since we're adding it to the list, we guess that this means
* the packet needs a State attribute. So add one.
*/
static int eaplist_add(rlm_eap_t *inst, EAP_HANDLER *handler)
{
int i, status;
uint32_t lvalue;
VALUE_PAIR *state;
rad_assert(handler != NULL);
rad_assert(handler->request != NULL);
/*
* Generate State, since we've been asked to add it to
* the list.
*/
state = pairmake("State", "0x00", T_OP_EQ);
if (!state) return 0;
pairadd(&(handler->request->reply->vps), state);
state->length = EAP_STATE_LEN;
/*
* The time at which this request was made was the time
* at which it was received by the RADIUS server.
*/
handler->timestamp = handler->request->timestamp;
handler->src_ipaddr = handler->request->packet->src_ipaddr;
/*
* We don't need this any more.
*/
handler->request = NULL;
/*
* Playing with a data structure shared among threads
* means that we need a lock, to avoid conflict.
*/
pthread_mutex_lock(&(inst->session_mutex));
/*
* Create a completely random state.
*/
for (i = 0; i < 4; i++) {
lvalue = eap_rand(&inst->rand_pool);
memcpy(state->vp_octets + i * 4, &lvalue, sizeof(lvalue));
}
memcpy(handler->state, state->vp_strvalue, sizeof(handler->state));
/*
* Big-time failure.
*/
status = rbtree_insert(inst->session_tree, handler);
if (status) {
EAP_HANDLER *prev;
prev = inst->session_tail;
if (prev) {
prev->next = handler;
handler->prev = prev;
handler->next = NULL;
inst->session_tail = handler;
} else {
inst->session_head = inst->session_tail = handler;
handler->next = handler->prev = NULL;
}
}
/*
* Now that we've finished mucking with the list,
* unlock it.
*/
pthread_mutex_unlock(&(inst->session_mutex));
if (!status) {
radlog(L_ERR, "rlm_eap2: Failed to remember handler!");
eap_handler_free(handler);
return 0;
}
return 1;
}
/*
* Find a a previous EAP-Request sent by us, which matches
* the current EAP-Response.
*
* Then, release the handle from the list, and return it to
* the caller.
*
* Also since we fill the eap_ds with the present EAP-Response we
* got to free the prev_eapds & move the eap_ds to prev_eapds
*/
eap_handler_t *eaplist_find(rlm_eap_t *inst, REQUEST *request,
eap_packet_raw_t *eap_packet)
{
VALUE_PAIR *state;
eap_handler_t *handler, myHandler;
/*
* We key the sessions off of the 'state' attribute, so it
* must exist.
*/
state = pairfind(request->packet->vps, PW_STATE, 0, TAG_ANY);
if (!state ||
(state->length != EAP_STATE_LEN)) {
return NULL;
}
myHandler.src_ipaddr = request->packet->src_ipaddr;
myHandler.eap_id = eap_packet->id;
memcpy(myHandler.state, state->vp_strvalue, sizeof(myHandler.state));
/*
* Playing with a data structure shared among threads
* means that we need a lock, to avoid conflict.
*/
PTHREAD_MUTEX_LOCK(&(inst->session_mutex));
eaplist_expire(inst, request, request->timestamp);
handler = eaplist_delete(inst, request, &myHandler);
PTHREAD_MUTEX_UNLOCK(&(inst->session_mutex));
/*
* Might not have been there.
*/
if (!handler) {
radlog(L_ERR, "rlm_eap (%s): No EAP session matching state "
"0x%02x%02x%02x%02x%02x%02x%02x%02x",
inst->xlat_name,
state->vp_octets[0], state->vp_octets[1],
state->vp_octets[2], state->vp_octets[3],
state->vp_octets[4], state->vp_octets[5],
state->vp_octets[6], state->vp_octets[7]);
return NULL;
}
if (handler->trips >= 50) {
radlog(L_ERR, "rlm_eap (%s): Aborting! More than 50 roundtrips "
"made in session with state "
"0x%02x%02x%02x%02x%02x%02x%02x%02x",
inst->xlat_name,
state->vp_octets[0], state->vp_octets[1],
state->vp_octets[2], state->vp_octets[3],
state->vp_octets[4], state->vp_octets[5],
state->vp_octets[6], state->vp_octets[7]);
eap_handler_free(inst, handler);
return NULL;
}
handler->trips++;
RDEBUG("Previous EAP request found for state "
"0x%02x%02x%02x%02x%02x%02x%02x%02x, released from the list",
state->vp_octets[0], state->vp_octets[1],
state->vp_octets[2], state->vp_octets[3],
state->vp_octets[4], state->vp_octets[5],
state->vp_octets[6], state->vp_octets[7]);
/*
* Remember what the previous request was.
*/
eap_ds_free(&(handler->prev_eapds));
handler->prev_eapds = handler->eap_ds;
handler->eap_ds = NULL;
return handler;
}
/*
* If we're proxying EAP, then there may be magic we need
* to do.
*/
static rlm_rcode_t mod_post_proxy(void *inst, REQUEST *request)
{
size_t i;
size_t len;
VALUE_PAIR *vp;
eap_handler_t *handler;
/*
* Just in case the admin lists EAP in post-proxy-type Fail.
*/
if (!request->proxy_reply) return RLM_MODULE_NOOP;
/*
* If there was a handler associated with this request,
* then it's a tunneled request which was proxied...
*/
handler = request_data_get(request, inst, REQUEST_DATA_eap_handler_t);
if (handler != NULL) {
rlm_rcode_t rcode;
eap_tunnel_data_t *data;
/*
* Grab the tunnel callbacks from the request.
*/
data = (eap_tunnel_data_t *) request_data_get(request,
request->proxy,
REQUEST_DATA_EAP_TUNNEL_CALLBACK);
if (!data) {
radlog_request(L_ERR, 0, request, "Failed to retrieve callback for tunneled session!");
eap_handler_free(inst, handler);
return RLM_MODULE_FAIL;
}
/*
* Do the callback...
*/
RDEBUG2("Doing post-proxy callback");
rcode = data->callback(handler, data->tls_session);
free(data);
if (rcode == 0) {
RDEBUG2("Failed in post-proxy callback");
eap_fail(handler);
eap_handler_free(inst, handler);
return RLM_MODULE_REJECT;
}
/*
* We are done, wrap the EAP-request in RADIUS to send
* with all other required radius attributes
*/
eap_compose(handler);
/*
* Add to the list only if it is EAP-Request, OR if
* it's LEAP, and a response.
*/
if ((handler->eap_ds->request->code == PW_EAP_REQUEST) &&
(handler->eap_ds->request->type.num >= PW_EAP_MD5)) {
if (!eaplist_add(inst, handler)) {
eap_fail(handler);
eap_handler_free(inst, handler);
return RLM_MODULE_FAIL;
}
} else { /* couldn't have been LEAP, there's no tunnel */
RDEBUG2("Freeing handler");
/* handler is not required any more, free it now */
eap_handler_free(inst, handler);
}
/*
* If it's an Access-Accept, RFC 2869, Section 2.3.1
* says that we MUST include a User-Name attribute in the
* Access-Accept.
*/
if ((request->reply->code == PW_AUTHENTICATION_ACK) &&
request->username) {
/*
* Doesn't exist, add it in.
*/
vp = pairfind(request->reply->vps, PW_USER_NAME, 0, TAG_ANY);
if (!vp) {
pairmake_reply("User-Name",
request->username->vp_strvalue,
T_OP_EQ);
}
}
return RLM_MODULE_OK;
} else {
RDEBUG2("No pre-existing handler found");
}
/*
* There may be more than one Cisco-AVPair.
* Ensure we find the one with the LEAP attribute.
*/
vp = request->proxy_reply->vps;
for (;;) {
/*
* Hmm... there's got to be a better way to
* discover codes for vendor attributes.
*
* This is vendor Cisco (9), Cisco-AVPair
* attribute (1)
*/
vp = pairfind(vp, 1, 9, TAG_ANY);
if (!vp) {
return RLM_MODULE_NOOP;
}
/*
* If it's "leap:session-key", then stop.
*
* The format is VERY specific!
*/
if (strncasecmp(vp->vp_strvalue, "leap:session-key=", 17) == 0) {
break;
}
/*
* Not this AV-pair. Go to the next one.
*/
vp = vp->next;
}
/*
* The format is very specific.
*/
if (vp->length != 17 + 34) {
RDEBUG2("Cisco-AVPair with leap:session-key has incorrect length %d: Expected %d",
vp->length, 17 + 34);
return RLM_MODULE_NOOP;
}
/*
* Decrypt the session key, using the proxy data.
*/
i = 34; /* starts off with 34 octets */
len = rad_tunnel_pwdecode(vp->vp_octets + 17, &i,
request->home_server->secret,
request->proxy->vector);
/*
* FIXME: Assert that i == 16.
*/
/*
* Encrypt the session key again, using the request data.
*/
rad_tunnel_pwencode(vp->vp_strvalue + 17, &len,
request->client->secret,
request->packet->vector);
return RLM_MODULE_UPDATED;
}
/*
* For backwards compatibility.
*/
static rlm_rcode_t mod_authenticate(void *instance, REQUEST *request)
{
rlm_eap_t *inst;
eap_handler_t *handler;
eap_packet_raw_t *eap_packet;
eap_rcode_t status;
rlm_rcode_t rcode;
inst = (rlm_eap_t *) instance;
if (!pairfind(request->packet->vps, PW_EAP_MESSAGE, 0, TAG_ANY)) {
RDEBUGE("You set 'Auth-Type = EAP' for a request that does "
"not contain an EAP-Message attribute!");
return RLM_MODULE_INVALID;
}
/*
* Get the eap packet to start with
*/
eap_packet = eap_vp2packet(request, request->packet->vps);
if (!eap_packet) {
radlog_request(L_ERR, 0, request, "Malformed EAP Message");
return RLM_MODULE_FAIL;
}
/*
* Create the eap handler. The eap_packet will end up being
* "swallowed" into the handler, so we can't access it after
* this call.
*/
handler = eap_handler(inst, &eap_packet, request);
if (!handler) {
RDEBUG2("Failed in handler");
return RLM_MODULE_INVALID;
}
/*
* Select the appropriate method or default to the
* configured one
*/
status = eap_method_select(inst, handler);
/*
* If it failed, die.
*/
if (status == EAP_INVALID) {
eap_fail(handler);
eap_handler_free(inst, handler);
RDEBUG2("Failed in EAP select");
return RLM_MODULE_INVALID;
}
#ifdef WITH_PROXY
/*
* If we're doing horrible tunneling work, remember it.
*/
if ((request->options & RAD_REQUEST_OPTION_PROXY_EAP) != 0) {
RDEBUG2(" Not-EAP proxy set. Not composing EAP");
/*
* Add the handle to the proxied list, so that we
* can retrieve it in the post-proxy stage, and
* send a response.
*/
handler->inst_holder = inst;
status = request_data_add(request,
inst, REQUEST_DATA_eap_handler_t,
handler, (void *) eap_opaque_free);
rad_assert(status == 0);
return RLM_MODULE_HANDLED;
}
#endif
#ifdef WITH_PROXY
/*
* Maybe the request was marked to be proxied. If so,
* proxy it.
*/
if (request->proxy != NULL) {
VALUE_PAIR *vp = NULL;
rad_assert(!request->proxy_reply);
/*
* Add the handle to the proxied list, so that we
* can retrieve it in the post-proxy stage, and
* send a response.
*/
handler->inst_holder = inst;
status = request_data_add(request,
inst, REQUEST_DATA_eap_handler_t,
handler,
(void *) eap_opaque_free);
rad_assert(status == 0);
/*
* Some simple sanity checks. These should really
* be handled by the radius library...
*/
vp = pairfind(request->proxy->vps, PW_EAP_MESSAGE, 0, TAG_ANY);
if (vp) {
vp = pairfind(request->proxy->vps, PW_MESSAGE_AUTHENTICATOR, 0, TAG_ANY);
if (!vp) {
pairmake(request->proxy,
&request->proxy->vps,
"Message-Authenticator",
"0x00", T_OP_EQ);
}
}
/*
* Delete the "proxied to" attribute, as it's
* set to 127.0.0.1 for tunneled requests, and
* we don't want to tell the world that...
*/
pairdelete(&request->proxy->vps, PW_FREERADIUS_PROXIED_TO, VENDORPEC_FREERADIUS, TAG_ANY);
RDEBUG2(" Tunneled session will be proxied. Not doing EAP.");
return RLM_MODULE_HANDLED;
}
#endif
/*
* We are done, wrap the EAP-request in RADIUS to send
* with all other required radius attributes
*/
rcode = eap_compose(handler);
/*
* Add to the list only if it is EAP-Request, OR if
* it's LEAP, and a response.
*/
if (((handler->eap_ds->request->code == PW_EAP_REQUEST) &&
(handler->eap_ds->request->type.num >= PW_EAP_MD5)) ||
/*
* LEAP is a little different. At Stage 4,
* it sends an EAP-Success message, but we still
* need to keep the State attribute & session
* data structure around for the AP Challenge.
*
* At stage 6, LEAP sends an EAP-Response, which
* isn't put into the list.
*/
((handler->eap_ds->response->code == PW_EAP_RESPONSE) &&
(handler->eap_ds->response->type.num == PW_EAP_LEAP) &&
(handler->eap_ds->request->code == PW_EAP_SUCCESS) &&
(handler->eap_ds->request->type.num == 0))) {
/*
* Return FAIL if we can't remember the handler.
* This is actually disallowed by the
* specification, as unexpected FAILs could have
* been forged. However, we want to signal to
* everyone else involved that we are
* intentionally failing the session, as opposed
* to accidentally failing it.
*/
if (!eaplist_add(inst, handler)) {
RDEBUG("Failed adding handler to the list");
eap_fail(handler);
eap_handler_free(inst, handler);
return RLM_MODULE_FAIL;
}
} else {
RDEBUG2("Freeing handler");
/* handler is not required any more, free it now */
eap_handler_free(inst, handler);
}
/*
* If it's an Access-Accept, RFC 2869, Section 2.3.1
* says that we MUST include a User-Name attribute in the
* Access-Accept.
*/
if ((request->reply->code == PW_AUTHENTICATION_ACK) &&
request->username) {
VALUE_PAIR *vp;
/*
* Doesn't exist, add it in.
*/
vp = pairfind(request->reply->vps, PW_USER_NAME, 0, TAG_ANY);
if (!vp) {
vp = pairmake_reply("User-Name", "",
T_OP_EQ);
strlcpy(vp->vp_strvalue, request->username->vp_strvalue,
sizeof(vp->vp_strvalue));
vp->length = request->username->length;
}
/*
* Cisco AP1230 has a bug and needs a zero
* terminated string in Access-Accept.
*/
if ((inst->mod_accounting_username_bug) &&
(vp->length < (int) sizeof(vp->vp_strvalue))) {
vp->vp_strvalue[vp->length] = '\0';
vp->length++;
}
}
return rcode;
}