LCOV - code coverage report
Current view: top level - src/eap_peer - eap_ikev2.c (source / functions) Hit Total Coverage
Test: wpa_supplicant/hostapd combined for hwsim test run 1422976643 Lines: 252 285 88.4 %
Date: 2015-02-03 Functions: 15 15 100.0 %

          Line data    Source code
       1             : /*
       2             :  * EAP-IKEv2 peer (RFC 5106)
       3             :  * Copyright (c) 2007-2014, Jouni Malinen <j@w1.fi>
       4             :  *
       5             :  * This software may be distributed under the terms of the BSD license.
       6             :  * See README for more details.
       7             :  */
       8             : 
       9             : #include "includes.h"
      10             : 
      11             : #include "common.h"
      12             : #include "eap_i.h"
      13             : #include "eap_common/eap_ikev2_common.h"
      14             : #include "ikev2.h"
      15             : 
      16             : 
      17             : struct eap_ikev2_data {
      18             :         struct ikev2_responder_data ikev2;
      19             :         enum { WAIT_START, PROC_MSG, WAIT_FRAG_ACK, DONE, FAIL } state;
      20             :         struct wpabuf *in_buf;
      21             :         struct wpabuf *out_buf;
      22             :         size_t out_used;
      23             :         size_t fragment_size;
      24             :         int keys_ready;
      25             :         u8 keymat[EAP_MSK_LEN + EAP_EMSK_LEN];
      26             :         int keymat_ok;
      27             : };
      28             : 
      29             : 
      30         158 : static const char * eap_ikev2_state_txt(int state)
      31             : {
      32         158 :         switch (state) {
      33             :         case WAIT_START:
      34          50 :                 return "WAIT_START";
      35             :         case PROC_MSG:
      36          48 :                 return "PROC_MSG";
      37             :         case WAIT_FRAG_ACK:
      38          16 :                 return "WAIT_FRAG_ACK";
      39             :         case DONE:
      40           6 :                 return "DONE";
      41             :         case FAIL:
      42          38 :                 return "FAIL";
      43             :         default:
      44           0 :                 return "?";
      45             :         }
      46             : }
      47             : 
      48             : 
      49          79 : static void eap_ikev2_state(struct eap_ikev2_data *data, int state)
      50             : {
      51         158 :         wpa_printf(MSG_DEBUG, "EAP-IKEV2: %s -> %s",
      52          79 :                    eap_ikev2_state_txt(data->state),
      53             :                    eap_ikev2_state_txt(state));
      54          79 :         data->state = state;
      55          79 : }
      56             : 
      57             : 
      58          56 : static void * eap_ikev2_init(struct eap_sm *sm)
      59             : {
      60             :         struct eap_ikev2_data *data;
      61             :         const u8 *identity, *password;
      62             :         size_t identity_len, password_len;
      63             :         int fragment_size;
      64             : 
      65          56 :         identity = eap_get_config_identity(sm, &identity_len);
      66          56 :         if (identity == NULL) {
      67           0 :                 wpa_printf(MSG_INFO, "EAP-IKEV2: No identity available");
      68           0 :                 return NULL;
      69             :         }
      70             : 
      71          56 :         data = os_zalloc(sizeof(*data));
      72          56 :         if (data == NULL)
      73           0 :                 return NULL;
      74          56 :         data->state = WAIT_START;
      75          56 :         fragment_size = eap_get_config_fragment_size(sm);
      76          56 :         if (fragment_size <= 0)
      77           0 :                 data->fragment_size = IKEV2_FRAGMENT_SIZE;
      78             :         else
      79          56 :                 data->fragment_size = fragment_size;
      80          56 :         data->ikev2.state = SA_INIT;
      81          56 :         data->ikev2.peer_auth = PEER_AUTH_SECRET;
      82          56 :         data->ikev2.key_pad = (u8 *) os_strdup("Key Pad for EAP-IKEv2");
      83          56 :         if (data->ikev2.key_pad == NULL)
      84           0 :                 goto failed;
      85          56 :         data->ikev2.key_pad_len = 21;
      86          56 :         data->ikev2.IDr = os_malloc(identity_len);
      87          56 :         if (data->ikev2.IDr == NULL)
      88           0 :                 goto failed;
      89          56 :         os_memcpy(data->ikev2.IDr, identity, identity_len);
      90          56 :         data->ikev2.IDr_len = identity_len;
      91             : 
      92          56 :         password = eap_get_config_password(sm, &password_len);
      93          56 :         if (password) {
      94          56 :                 data->ikev2.shared_secret = os_malloc(password_len);
      95          56 :                 if (data->ikev2.shared_secret == NULL)
      96           0 :                         goto failed;
      97          56 :                 os_memcpy(data->ikev2.shared_secret, password, password_len);
      98          56 :                 data->ikev2.shared_secret_len = password_len;
      99             :         }
     100             : 
     101          56 :         return data;
     102             : 
     103             : failed:
     104           0 :         ikev2_responder_deinit(&data->ikev2);
     105           0 :         os_free(data);
     106           0 :         return NULL;
     107             : }
     108             : 
     109             : 
     110          56 : static void eap_ikev2_deinit(struct eap_sm *sm, void *priv)
     111             : {
     112          56 :         struct eap_ikev2_data *data = priv;
     113          56 :         wpabuf_free(data->in_buf);
     114          56 :         wpabuf_free(data->out_buf);
     115          56 :         ikev2_responder_deinit(&data->ikev2);
     116          56 :         bin_clear_free(data, sizeof(*data));
     117          56 : }
     118             : 
     119             : 
     120           6 : static int eap_ikev2_peer_keymat(struct eap_ikev2_data *data)
     121             : {
     122          18 :         if (eap_ikev2_derive_keymat(
     123             :                     data->ikev2.proposal.prf, &data->ikev2.keys,
     124           6 :                     data->ikev2.i_nonce, data->ikev2.i_nonce_len,
     125           6 :                     data->ikev2.r_nonce, data->ikev2.r_nonce_len,
     126           6 :                     data->keymat) < 0) {
     127           0 :                 wpa_printf(MSG_DEBUG, "EAP-IKEV2: Failed to "
     128             :                            "derive key material");
     129           0 :                 return -1;
     130             :         }
     131           6 :         data->keymat_ok = 1;
     132           6 :         return 0;
     133             : }
     134             : 
     135             : 
     136          27 : static struct wpabuf * eap_ikev2_build_msg(struct eap_ikev2_data *data,
     137             :                                            struct eap_method_ret *ret, u8 id)
     138             : {
     139             :         struct wpabuf *resp;
     140             :         u8 flags;
     141          27 :         size_t send_len, plen, icv_len = 0;
     142             : 
     143          27 :         ret->ignore = FALSE;
     144          27 :         wpa_printf(MSG_DEBUG, "EAP-IKEV2: Generating Response");
     145          27 :         ret->allowNotifications = TRUE;
     146             : 
     147          27 :         flags = 0;
     148          27 :         send_len = wpabuf_len(data->out_buf) - data->out_used;
     149          27 :         if (1 + send_len > data->fragment_size) {
     150           8 :                 send_len = data->fragment_size - 1;
     151           8 :                 flags |= IKEV2_FLAGS_MORE_FRAGMENTS;
     152           8 :                 if (data->out_used == 0) {
     153           2 :                         flags |= IKEV2_FLAGS_LENGTH_INCLUDED;
     154           2 :                         send_len -= 4;
     155             :                 }
     156             :         }
     157             : 
     158          27 :         plen = 1 + send_len;
     159          27 :         if (flags & IKEV2_FLAGS_LENGTH_INCLUDED)
     160           2 :                 plen += 4;
     161          27 :         if (data->keys_ready) {
     162             :                 const struct ikev2_integ_alg *integ;
     163           9 :                 wpa_printf(MSG_DEBUG, "EAP-IKEV2: Add Integrity Checksum "
     164             :                            "Data");
     165           9 :                 flags |= IKEV2_FLAGS_ICV_INCLUDED;
     166           9 :                 integ = ikev2_get_integ(data->ikev2.proposal.integ);
     167           9 :                 if (integ == NULL) {
     168           0 :                         wpa_printf(MSG_DEBUG, "EAP-IKEV2: Unknown INTEG "
     169             :                                    "transform / cannot generate ICV");
     170           0 :                         return NULL;
     171             :                 }
     172           9 :                 icv_len = integ->hash_len;
     173             : 
     174           9 :                 plen += icv_len;
     175             :         }
     176          27 :         resp = eap_msg_alloc(EAP_VENDOR_IETF, EAP_TYPE_IKEV2, plen,
     177             :                              EAP_CODE_RESPONSE, id);
     178          27 :         if (resp == NULL)
     179           0 :                 return NULL;
     180             : 
     181          27 :         wpabuf_put_u8(resp, flags); /* Flags */
     182          27 :         if (flags & IKEV2_FLAGS_LENGTH_INCLUDED)
     183           2 :                 wpabuf_put_be32(resp, wpabuf_len(data->out_buf));
     184             : 
     185          27 :         wpabuf_put_data(resp, wpabuf_head_u8(data->out_buf) + data->out_used,
     186             :                         send_len);
     187          27 :         data->out_used += send_len;
     188             : 
     189          27 :         if (flags & IKEV2_FLAGS_ICV_INCLUDED) {
     190           9 :                 const u8 *msg = wpabuf_head(resp);
     191           9 :                 size_t len = wpabuf_len(resp);
     192          18 :                 ikev2_integ_hash(data->ikev2.proposal.integ,
     193           9 :                                  data->ikev2.keys.SK_ar,
     194             :                                  data->ikev2.keys.SK_integ_len,
     195           9 :                                  msg, len, wpabuf_put(resp, icv_len));
     196             :         }
     197             : 
     198          27 :         ret->methodState = METHOD_MAY_CONT;
     199          27 :         ret->decision = DECISION_FAIL;
     200             : 
     201          27 :         if (data->out_used == wpabuf_len(data->out_buf)) {
     202          19 :                 wpa_printf(MSG_DEBUG, "EAP-IKEV2: Sending out %lu bytes "
     203             :                            "(message sent completely)",
     204             :                            (unsigned long) send_len);
     205          19 :                 wpabuf_free(data->out_buf);
     206          19 :                 data->out_buf = NULL;
     207          19 :                 data->out_used = 0;
     208          19 :                 switch (data->ikev2.state) {
     209             :                 case SA_AUTH:
     210             :                         /* SA_INIT was sent out, so message have to be
     211             :                          * integrity protected from now on. */
     212          11 :                         data->keys_ready = 1;
     213          11 :                         break;
     214             :                 case IKEV2_DONE:
     215           6 :                         ret->methodState = METHOD_DONE;
     216           6 :                         if (data->state == FAIL)
     217           0 :                                 break;
     218           6 :                         ret->decision = DECISION_COND_SUCC;
     219           6 :                         wpa_printf(MSG_DEBUG, "EAP-IKEV2: Authentication "
     220             :                                    "completed successfully");
     221           6 :                         if (eap_ikev2_peer_keymat(data))
     222           0 :                                 break;
     223           6 :                         eap_ikev2_state(data, DONE);
     224           6 :                         break;
     225             :                 case IKEV2_FAILED:
     226           1 :                         wpa_printf(MSG_DEBUG, "EAP-IKEV2: Authentication "
     227             :                                    "failed");
     228           1 :                         ret->methodState = METHOD_DONE;
     229           1 :                         ret->decision = DECISION_FAIL;
     230           1 :                         break;
     231             :                 default:
     232           1 :                         break;
     233             :                 }
     234             :         } else {
     235           8 :                 wpa_printf(MSG_DEBUG, "EAP-IKEV2: Sending out %lu bytes "
     236             :                            "(%lu more to send)", (unsigned long) send_len,
     237           8 :                            (unsigned long) wpabuf_len(data->out_buf) -
     238           8 :                            data->out_used);
     239           8 :                 eap_ikev2_state(data, WAIT_FRAG_ACK);
     240             :         }
     241             : 
     242          27 :         return resp;
     243             : }
     244             : 
     245             : 
     246          87 : static int eap_ikev2_process_icv(struct eap_ikev2_data *data,
     247             :                                  const struct wpabuf *reqData,
     248             :                                  u8 flags, const u8 *pos, const u8 **end,
     249             :                                  int frag_ack)
     250             : {
     251          87 :         if (flags & IKEV2_FLAGS_ICV_INCLUDED) {
     252          14 :                 int icv_len = eap_ikev2_validate_icv(
     253             :                         data->ikev2.proposal.integ, &data->ikev2.keys, 1,
     254             :                         reqData, pos, *end);
     255          14 :                 if (icv_len < 0)
     256           3 :                         return -1;
     257             :                 /* Hide Integrity Checksum Data from further processing */
     258          11 :                 *end -= icv_len;
     259          73 :         } else if (data->keys_ready && !frag_ack) {
     260           1 :                 wpa_printf(MSG_INFO, "EAP-IKEV2: The message should have "
     261             :                            "included integrity checksum");
     262           1 :                 return -1;
     263             :         }
     264             : 
     265          83 :         return 0;
     266             : }
     267             : 
     268             : 
     269          13 : static int eap_ikev2_process_cont(struct eap_ikev2_data *data,
     270             :                                   const u8 *buf, size_t len)
     271             : {
     272             :         /* Process continuation of a pending message */
     273          13 :         if (len > wpabuf_tailroom(data->in_buf)) {
     274           1 :                 wpa_printf(MSG_DEBUG, "EAP-IKEV2: Fragment overflow");
     275           1 :                 eap_ikev2_state(data, FAIL);
     276           1 :                 return -1;
     277             :         }
     278             : 
     279          12 :         wpabuf_put_data(data->in_buf, buf, len);
     280          12 :         wpa_printf(MSG_DEBUG, "EAP-IKEV2: Received %lu bytes, waiting "
     281             :                    "for %lu bytes more", (unsigned long) len,
     282          12 :                    (unsigned long) wpabuf_tailroom(data->in_buf));
     283             : 
     284          12 :         return 0;
     285             : }
     286             : 
     287             : 
     288          16 : static struct wpabuf * eap_ikev2_process_fragment(struct eap_ikev2_data *data,
     289             :                                                   struct eap_method_ret *ret,
     290             :                                                   u8 id, u8 flags,
     291             :                                                   u32 message_length,
     292             :                                                   const u8 *buf, size_t len)
     293             : {
     294             :         /* Process a fragment that is not the last one of the message */
     295          16 :         if (data->in_buf == NULL && !(flags & IKEV2_FLAGS_LENGTH_INCLUDED)) {
     296           1 :                 wpa_printf(MSG_DEBUG, "EAP-IKEV2: No Message Length field in "
     297             :                            "a fragmented packet");
     298           1 :                 ret->ignore = TRUE;
     299           1 :                 return NULL;
     300             :         }
     301             : 
     302          15 :         if (data->in_buf == NULL) {
     303             :                 /* First fragment of the message */
     304           7 :                 if (message_length > 50000) {
     305             :                         /* Limit maximum memory allocation */
     306           2 :                         wpa_printf(MSG_DEBUG,
     307             :                                    "EAP-IKEV2: Ignore too long message");
     308           2 :                         ret->ignore = TRUE;
     309           2 :                         return NULL;
     310             :                 }
     311           5 :                 data->in_buf = wpabuf_alloc(message_length);
     312           5 :                 if (data->in_buf == NULL) {
     313           0 :                         wpa_printf(MSG_DEBUG, "EAP-IKEV2: No memory for "
     314             :                                    "message");
     315           0 :                         ret->ignore = TRUE;
     316           0 :                         return NULL;
     317             :                 }
     318           5 :                 wpabuf_put_data(data->in_buf, buf, len);
     319           5 :                 wpa_printf(MSG_DEBUG, "EAP-IKEV2: Received %lu bytes in first "
     320             :                            "fragment, waiting for %lu bytes more",
     321             :                            (unsigned long) len,
     322           5 :                            (unsigned long) wpabuf_tailroom(data->in_buf));
     323             :         }
     324             : 
     325          13 :         ret->ignore = FALSE;
     326          13 :         return eap_ikev2_build_frag_ack(id, EAP_CODE_RESPONSE);
     327             : }
     328             : 
     329             : 
     330          87 : static struct wpabuf * eap_ikev2_process(struct eap_sm *sm, void *priv,
     331             :                                          struct eap_method_ret *ret,
     332             :                                          const struct wpabuf *reqData)
     333             : {
     334          87 :         struct eap_ikev2_data *data = priv;
     335             :         const u8 *start, *pos, *end;
     336             :         size_t len;
     337             :         u8 flags, id;
     338          87 :         u32 message_length = 0;
     339             :         struct wpabuf tmpbuf;
     340             : 
     341          87 :         pos = eap_hdr_validate(EAP_VENDOR_IETF, EAP_TYPE_IKEV2, reqData, &len);
     342          87 :         if (pos == NULL) {
     343           0 :                 ret->ignore = TRUE;
     344           0 :                 return NULL;
     345             :         }
     346             : 
     347          87 :         id = eap_get_id(reqData);
     348             : 
     349          87 :         start = pos;
     350          87 :         end = start + len;
     351             : 
     352          87 :         if (len == 0)
     353           9 :                 flags = 0; /* fragment ack */
     354             :         else
     355          78 :                 flags = *pos++;
     356             : 
     357          95 :         if (eap_ikev2_process_icv(data, reqData, flags, pos, &end,
     358          95 :                                   data->state == WAIT_FRAG_ACK && len == 0) < 0)
     359             :         {
     360           4 :                 ret->ignore = TRUE;
     361           4 :                 return NULL;
     362             :         }
     363             : 
     364          83 :         if (flags & IKEV2_FLAGS_LENGTH_INCLUDED) {
     365          11 :                 if (end - pos < 4) {
     366           1 :                         wpa_printf(MSG_DEBUG, "EAP-IKEV2: Message underflow");
     367           1 :                         ret->ignore = TRUE;
     368           1 :                         return NULL;
     369             :                 }
     370          10 :                 message_length = WPA_GET_BE32(pos);
     371          10 :                 pos += 4;
     372             : 
     373          10 :                 if (message_length < (u32) (end - pos)) {
     374           1 :                         wpa_printf(MSG_DEBUG, "EAP-IKEV2: Invalid Message "
     375             :                                    "Length (%d; %ld remaining in this msg)",
     376             :                                    message_length, (long) (end - pos));
     377           1 :                         ret->ignore = TRUE;
     378           1 :                         return NULL;
     379             :                 }
     380             :         }
     381             : 
     382          81 :         wpa_printf(MSG_DEBUG, "EAP-IKEV2: Received packet: Flags 0x%x "
     383             :                    "Message Length %u", flags, message_length);
     384             : 
     385          81 :         if (data->state == WAIT_FRAG_ACK) {
     386           8 :                 if (len != 0) {
     387           0 :                         wpa_printf(MSG_DEBUG, "EAP-IKEV2: Unexpected payload "
     388             :                                    "in WAIT_FRAG_ACK state");
     389           0 :                         ret->ignore = TRUE;
     390           0 :                         return NULL;
     391             :                 }
     392           8 :                 wpa_printf(MSG_DEBUG, "EAP-IKEV2: Fragment acknowledged");
     393           8 :                 eap_ikev2_state(data, PROC_MSG);
     394           8 :                 return eap_ikev2_build_msg(data, ret, id);
     395             :         }
     396             : 
     397          73 :         if (data->in_buf && eap_ikev2_process_cont(data, pos, end - pos) < 0) {
     398           1 :                 ret->ignore = TRUE;
     399           1 :                 return NULL;
     400             :         }
     401             :                 
     402          72 :         if (flags & IKEV2_FLAGS_MORE_FRAGMENTS) {
     403          16 :                 return eap_ikev2_process_fragment(data, ret, id, flags,
     404             :                                                   message_length, pos,
     405          16 :                                                   end - pos);
     406             :         }
     407             : 
     408          56 :         if (data->in_buf == NULL) {
     409             :                 /* Wrap unfragmented messages as wpabuf without extra copy */
     410          52 :                 wpabuf_set(&tmpbuf, pos, end - pos);
     411          52 :                 data->in_buf = &tmpbuf;
     412             :         }
     413             : 
     414          56 :         if (ikev2_responder_process(&data->ikev2, data->in_buf) < 0) {
     415          37 :                 if (data->in_buf == &tmpbuf)
     416          37 :                         data->in_buf = NULL;
     417          37 :                 eap_ikev2_state(data, FAIL);
     418          37 :                 return NULL;
     419             :         }
     420             : 
     421          19 :         if (data->in_buf != &tmpbuf)
     422           4 :                 wpabuf_free(data->in_buf);
     423          19 :         data->in_buf = NULL;
     424             : 
     425          19 :         if (data->out_buf == NULL) {
     426          19 :                 data->out_buf = ikev2_responder_build(&data->ikev2);
     427          19 :                 if (data->out_buf == NULL) {
     428           0 :                         wpa_printf(MSG_DEBUG, "EAP-IKEV2: Failed to generate "
     429             :                                    "IKEv2 message");
     430           0 :                         return NULL;
     431             :                 }
     432          19 :                 data->out_used = 0;
     433             :         }
     434             : 
     435          19 :         eap_ikev2_state(data, PROC_MSG);
     436          19 :         return eap_ikev2_build_msg(data, ret, id);
     437             : }
     438             : 
     439             : 
     440          44 : static Boolean eap_ikev2_isKeyAvailable(struct eap_sm *sm, void *priv)
     441             : {
     442          44 :         struct eap_ikev2_data *data = priv;
     443          44 :         return data->state == DONE && data->keymat_ok;
     444             : }
     445             : 
     446             : 
     447           6 : static u8 * eap_ikev2_getKey(struct eap_sm *sm, void *priv, size_t *len)
     448             : {
     449           6 :         struct eap_ikev2_data *data = priv;
     450             :         u8 *key;
     451             : 
     452           6 :         if (data->state != DONE || !data->keymat_ok)
     453           0 :                 return NULL;
     454             : 
     455           6 :         key = os_malloc(EAP_MSK_LEN);
     456           6 :         if (key) {
     457           6 :                 os_memcpy(key, data->keymat, EAP_MSK_LEN);
     458           6 :                 *len = EAP_MSK_LEN;
     459             :         }
     460             : 
     461           6 :         return key;
     462             : }
     463             : 
     464             : 
     465           1 : static u8 * eap_ikev2_get_emsk(struct eap_sm *sm, void *priv, size_t *len)
     466             : {
     467           1 :         struct eap_ikev2_data *data = priv;
     468             :         u8 *key;
     469             : 
     470           1 :         if (data->state != DONE || !data->keymat_ok)
     471           0 :                 return NULL;
     472             : 
     473           1 :         key = os_malloc(EAP_EMSK_LEN);
     474           1 :         if (key) {
     475           1 :                 os_memcpy(key, data->keymat + EAP_MSK_LEN, EAP_EMSK_LEN);
     476           1 :                 *len = EAP_EMSK_LEN;
     477             :         }
     478             : 
     479           1 :         return key;
     480             : }
     481             : 
     482             : 
     483           6 : static u8 * eap_ikev2_get_session_id(struct eap_sm *sm, void *priv, size_t *len)
     484             : {
     485           6 :         struct eap_ikev2_data *data = priv;
     486             :         u8 *sid;
     487             :         size_t sid_len;
     488             :         size_t offset;
     489             : 
     490           6 :         if (data->state != DONE || !data->keymat_ok)
     491           0 :                 return NULL;
     492             : 
     493           6 :         sid_len = 1 + data->ikev2.i_nonce_len + data->ikev2.r_nonce_len;
     494           6 :         sid = os_malloc(sid_len);
     495           6 :         if (sid) {
     496           6 :                 offset = 0;
     497           6 :                 sid[offset] = EAP_TYPE_IKEV2;
     498           6 :                 offset++;
     499           6 :                 os_memcpy(sid + offset, data->ikev2.i_nonce,
     500             :                           data->ikev2.i_nonce_len);
     501           6 :                 offset += data->ikev2.i_nonce_len;
     502           6 :                 os_memcpy(sid + offset, data->ikev2.r_nonce,
     503             :                           data->ikev2.r_nonce_len);
     504           6 :                 *len = sid_len;
     505           6 :                 wpa_hexdump(MSG_DEBUG, "EAP-IKEV2: Derived Session-Id",
     506             :                             sid, sid_len);
     507             :         }
     508             : 
     509           6 :         return sid;
     510             : }
     511             : 
     512             : 
     513          30 : int eap_peer_ikev2_register(void)
     514             : {
     515             :         struct eap_method *eap;
     516             :         int ret;
     517             : 
     518          30 :         eap = eap_peer_method_alloc(EAP_PEER_METHOD_INTERFACE_VERSION,
     519             :                                     EAP_VENDOR_IETF, EAP_TYPE_IKEV2,
     520             :                                     "IKEV2");
     521          30 :         if (eap == NULL)
     522           0 :                 return -1;
     523             : 
     524          30 :         eap->init = eap_ikev2_init;
     525          30 :         eap->deinit = eap_ikev2_deinit;
     526          30 :         eap->process = eap_ikev2_process;
     527          30 :         eap->isKeyAvailable = eap_ikev2_isKeyAvailable;
     528          30 :         eap->getKey = eap_ikev2_getKey;
     529          30 :         eap->get_emsk = eap_ikev2_get_emsk;
     530          30 :         eap->getSessionId = eap_ikev2_get_session_id;
     531             : 
     532          30 :         ret = eap_peer_method_register(eap);
     533          30 :         if (ret)
     534           0 :                 eap_peer_method_free(eap);
     535          30 :         return ret;
     536             : }

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