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author | Rene Mayrhofer <rene@mayrhofer.eu.org> | 2010-05-27 15:43:45 +0000 |
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committer | Rene Mayrhofer <rene@mayrhofer.eu.org> | 2010-05-27 15:43:45 +0000 |
commit | 6c2828d075efdfc02348369149b4347447857c8c (patch) | |
tree | 6c9ec7c9f342792e5eb2c2973daa7bbbeb45362e /src/charon/plugins/eap_aka | |
parent | cc7f376e575482c9a4866a4bd0c1f470394d740b (diff) | |
download | vyos-strongswan-6c2828d075efdfc02348369149b4347447857c8c.tar.gz vyos-strongswan-6c2828d075efdfc02348369149b4347447857c8c.zip |
Remove leftovers after source code restructuring.
Diffstat (limited to 'src/charon/plugins/eap_aka')
-rw-r--r-- | src/charon/plugins/eap_aka/Makefile.am | 14 | ||||
-rw-r--r-- | src/charon/plugins/eap_aka/Makefile.in | 577 | ||||
-rw-r--r-- | src/charon/plugins/eap_aka/eap_aka_peer.c | 583 | ||||
-rw-r--r-- | src/charon/plugins/eap_aka/eap_aka_peer.h | 49 | ||||
-rw-r--r-- | src/charon/plugins/eap_aka/eap_aka_plugin.c | 51 | ||||
-rw-r--r-- | src/charon/plugins/eap_aka/eap_aka_plugin.h | 50 | ||||
-rw-r--r-- | src/charon/plugins/eap_aka/eap_aka_server.c | 700 | ||||
-rw-r--r-- | src/charon/plugins/eap_aka/eap_aka_server.h | 49 |
8 files changed, 0 insertions, 2073 deletions
diff --git a/src/charon/plugins/eap_aka/Makefile.am b/src/charon/plugins/eap_aka/Makefile.am deleted file mode 100644 index e007f5f00..000000000 --- a/src/charon/plugins/eap_aka/Makefile.am +++ /dev/null @@ -1,14 +0,0 @@ - -INCLUDES = -I$(top_srcdir)/src/libstrongswan -I$(top_srcdir)/src/charon \ - -I$(top_srcdir)/src/libsimaka - -AM_CFLAGS = -rdynamic - -plugin_LTLIBRARIES = libstrongswan-eap-aka.la - -libstrongswan_eap_aka_la_SOURCES = eap_aka_plugin.h eap_aka_plugin.c \ - eap_aka_peer.h eap_aka_peer.c \ - eap_aka_server.h eap_aka_server.c -libstrongswan_eap_aka_la_LIBADD = $(top_builddir)/src/libsimaka/libsimaka.la -libstrongswan_eap_aka_la_LDFLAGS = -module -avoid-version - diff --git a/src/charon/plugins/eap_aka/Makefile.in b/src/charon/plugins/eap_aka/Makefile.in deleted file mode 100644 index d241e1ad0..000000000 --- a/src/charon/plugins/eap_aka/Makefile.in +++ /dev/null @@ -1,577 +0,0 @@ -# Makefile.in generated by automake 1.11 from Makefile.am. -# @configure_input@ - -# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, -# 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, -# Inc. -# This Makefile.in is free software; the Free Software Foundation -# gives unlimited permission to copy and/or distribute it, -# with or without modifications, as long as this notice is preserved. - 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tags uninstall uninstall-am uninstall-pluginLTLIBRARIES - - -# Tell versions [3.59,3.63) of GNU make to not export all variables. -# Otherwise a system limit (for SysV at least) may be exceeded. -.NOEXPORT: diff --git a/src/charon/plugins/eap_aka/eap_aka_peer.c b/src/charon/plugins/eap_aka/eap_aka_peer.c deleted file mode 100644 index 26546809d..000000000 --- a/src/charon/plugins/eap_aka/eap_aka_peer.c +++ /dev/null @@ -1,583 +0,0 @@ -/* - * Copyright (C) 2006-2009 Martin Willi - * Hochschule fuer Technik Rapperswil - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY - * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License - * for more details. - */ - -#include "eap_aka_peer.h" - -#include <library.h> -#include <daemon.h> - -#include <simaka_message.h> -#include <simaka_crypto.h> - -typedef struct private_eap_aka_peer_t private_eap_aka_peer_t; - -/** - * Private data of an eap_aka_peer_t object. - */ -struct private_eap_aka_peer_t { - - /** - * Public authenticator_t interface. - */ - eap_aka_peer_t public; - - /** - * EAP-AKA crypto helper - */ - simaka_crypto_t *crypto; - - /** - * permanent ID of peer - */ - identification_t *permanent; - - /** - * Pseudonym identity the peer uses - */ - identification_t *pseudonym; - - /** - * Reauthentication identity the peer uses - */ - identification_t *reauth; - - /** - * MSK - */ - chunk_t msk; - - /** - * Master key, if reauthentication is used - */ - char mk[HASH_SIZE_SHA1]; - - /** - * Counter value if reauthentication is used - */ - u_int16_t counter; -}; - -/** - * Create a AKA_CLIENT_ERROR: "Unable to process" - */ -static eap_payload_t* create_client_error(private_eap_aka_peer_t *this, - u_int8_t identifier) -{ - simaka_message_t *message; - eap_payload_t *out; - u_int16_t encoded; - - DBG1(DBG_IKE, "sending client error '%N'", - simaka_client_error_names, AKA_UNABLE_TO_PROCESS); - - message = simaka_message_create(FALSE, identifier, EAP_AKA, - AKA_CLIENT_ERROR, this->crypto); - encoded = htons(AKA_UNABLE_TO_PROCESS); - message->add_attribute(message, AT_CLIENT_ERROR_CODE, - chunk_create((char*)&encoded, sizeof(encoded))); - out = message->generate(message, chunk_empty); - message->destroy(message); - return out; -} - -/** - * process an EAP-AKA/Request/Identity message - */ -static status_t process_identity(private_eap_aka_peer_t *this, - simaka_message_t *in, eap_payload_t **out) -{ - simaka_message_t *message; - enumerator_t *enumerator; - simaka_attribute_t type; - chunk_t data, id = chunk_empty; - simaka_attribute_t id_req = 0; - - /* reset previously uses reauthentication/pseudonym data */ - this->crypto->clear_keys(this->crypto); - DESTROY_IF(this->pseudonym); - this->pseudonym = NULL; - DESTROY_IF(this->reauth); - this->reauth = NULL; - - enumerator = in->create_attribute_enumerator(in); - while (enumerator->enumerate(enumerator, &type, &data)) - { - switch (type) - { - case AT_ANY_ID_REQ: - case AT_FULLAUTH_ID_REQ: - case AT_PERMANENT_ID_REQ: - id_req = type; - break; - default: - if (!simaka_attribute_skippable(type)) - { - *out = create_client_error(this, in->get_identifier(in)); - enumerator->destroy(enumerator); - return NEED_MORE; - } - break; - } - } - enumerator->destroy(enumerator); - - switch (id_req) - { - case AT_ANY_ID_REQ: - this->reauth = charon->sim->card_get_reauth(charon->sim, - this->permanent, this->mk, &this->counter); - if (this->reauth) - { - id = this->reauth->get_encoding(this->reauth); - break; - } - /* FALL */ - case AT_FULLAUTH_ID_REQ: - this->pseudonym = charon->sim->card_get_pseudonym(charon->sim, - this->permanent); - if (this->pseudonym) - { - id = this->pseudonym->get_encoding(this->pseudonym); - break; - } - /* FALL */ - case AT_PERMANENT_ID_REQ: - id = this->permanent->get_encoding(this->permanent); - break; - default: - break; - } - message = simaka_message_create(FALSE, in->get_identifier(in), EAP_AKA, - AKA_IDENTITY, this->crypto); - if (id.len) - { - message->add_attribute(message, AT_IDENTITY, id); - } - *out = message->generate(message, chunk_empty); - message->destroy(message); - - return NEED_MORE; -} - -/** - * Process an EAP-AKA/Request/Challenge message - */ -static status_t process_challenge(private_eap_aka_peer_t *this, - simaka_message_t *in, eap_payload_t **out) -{ - simaka_message_t *message; - enumerator_t *enumerator; - simaka_attribute_t type; - chunk_t data, rand = chunk_empty, autn = chunk_empty, mk; - u_char res[AKA_RES_MAX], ck[AKA_CK_LEN], ik[AKA_IK_LEN], auts[AKA_AUTS_LEN]; - int res_len; - identification_t *id; - status_t status; - - enumerator = in->create_attribute_enumerator(in); - while (enumerator->enumerate(enumerator, &type, &data)) - { - switch (type) - { - case AT_RAND: - rand = data; - break; - case AT_AUTN: - autn = data; - break; - default: - if (!simaka_attribute_skippable(type)) - { - *out = create_client_error(this, in->get_identifier(in)); - enumerator->destroy(enumerator); - return NEED_MORE; - } - break; - } - } - enumerator->destroy(enumerator); - - if (!rand.len || !autn.len) - { - DBG1(DBG_IKE, "received invalid EAP-AKA challenge message"); - *out = create_client_error(this, in->get_identifier(in)); - return NEED_MORE; - } - - status = charon->sim->card_get_quintuplet(charon->sim, this->permanent, - rand.ptr, autn.ptr, ck, ik, res, &res_len); - if (status == INVALID_STATE && - charon->sim->card_resync(charon->sim, this->permanent, rand.ptr, auts)) - { - DBG1(DBG_IKE, "received SQN invalid, sending %N", - simaka_subtype_names, AKA_SYNCHRONIZATION_FAILURE); - message = simaka_message_create(FALSE, in->get_identifier(in), EAP_AKA, - AKA_SYNCHRONIZATION_FAILURE, this->crypto); - message->add_attribute(message, AT_AUTS, - chunk_create(auts, AKA_AUTS_LEN)); - *out = message->generate(message, chunk_empty); - message->destroy(message); - return NEED_MORE; - } - if (status != SUCCESS) - { - DBG1(DBG_IKE, "no USIM found with quintuplets for '%Y', sending %N", - this->permanent, simaka_subtype_names, AKA_AUTHENTICATION_REJECT); - message = simaka_message_create(FALSE, in->get_identifier(in), EAP_AKA, - AKA_AUTHENTICATION_REJECT, this->crypto); - *out = message->generate(message, chunk_empty); - message->destroy(message); - return NEED_MORE; - } - - id = this->permanent; - if (this->pseudonym) - { - id = this->pseudonym; - } - data = chunk_cata("cc", chunk_create(ik, AKA_IK_LEN), - chunk_create(ck, AKA_CK_LEN)); - free(this->msk.ptr); - this->msk = this->crypto->derive_keys_full(this->crypto, id, data, &mk); - memcpy(this->mk, mk.ptr, mk.len); - free(mk.ptr); - - /* Verify AT_MAC attribute and parse() again after key derivation, - * reading encrypted attributes */ - if (!in->verify(in, chunk_empty) || !in->parse(in)) - { - *out = create_client_error(this, in->get_identifier(in)); - return NEED_MORE; - } - - enumerator = in->create_attribute_enumerator(in); - while (enumerator->enumerate(enumerator, &type, &data)) - { - switch (type) - { - case AT_NEXT_REAUTH_ID: - this->counter = 0; - id = identification_create_from_data(data); - charon->sim->card_set_reauth(charon->sim, this->permanent, id, - this->mk, this->counter); - id->destroy(id); - break; - case AT_NEXT_PSEUDONYM: - id = identification_create_from_data(data); - charon->sim->card_set_pseudonym(charon->sim, this->permanent, id); - id->destroy(id); - break; - default: - break; - } - } - enumerator->destroy(enumerator); - - message = simaka_message_create(FALSE, in->get_identifier(in), EAP_AKA, - AKA_CHALLENGE, this->crypto); - message->add_attribute(message, AT_RES, chunk_create(res, res_len)); - *out = message->generate(message, chunk_empty); - message->destroy(message); - return NEED_MORE; -} - -/** - * Check if a received counter value is acceptable - */ -static bool counter_too_small(private_eap_aka_peer_t *this, chunk_t chunk) -{ - u_int16_t counter; - - memcpy(&counter, chunk.ptr, sizeof(counter)); - counter = htons(counter); - return counter < this->counter; -} - -/** - * process an EAP-AKA/Request/Reauthentication message - */ -static status_t process_reauthentication(private_eap_aka_peer_t *this, - simaka_message_t *in, eap_payload_t **out) -{ - simaka_message_t *message; - enumerator_t *enumerator; - simaka_attribute_t type; - chunk_t data, counter = chunk_empty, nonce = chunk_empty, id = chunk_empty; - - if (!this->reauth) - { - DBG1(DBG_IKE, "received %N, but not expected", - simaka_subtype_names, AKA_REAUTHENTICATION); - *out = create_client_error(this, in->get_identifier(in)); - return NEED_MORE; - } - - this->crypto->derive_keys_reauth(this->crypto, - chunk_create(this->mk, HASH_SIZE_SHA1)); - - /* verify MAC and parse again with decryption key */ - if (!in->verify(in, chunk_empty) || !in->parse(in)) - { - *out = create_client_error(this, in->get_identifier(in)); - return NEED_MORE; - } - - enumerator = in->create_attribute_enumerator(in); - while (enumerator->enumerate(enumerator, &type, &data)) - { - switch (type) - { - case AT_COUNTER: - counter = data; - break; - case AT_NONCE_S: - nonce = data; - break; - case AT_NEXT_REAUTH_ID: - id = data; - break; - default: - if (!simaka_attribute_skippable(type)) - { - *out = create_client_error(this, in->get_identifier(in)); - enumerator->destroy(enumerator); - return NEED_MORE; - } - break; - } - } - enumerator->destroy(enumerator); - - if (!nonce.len || !counter.len) - { - DBG1(DBG_IKE, "EAP-AKA/Request/Reauthentication message incomplete"); - *out = create_client_error(this, in->get_identifier(in)); - return NEED_MORE; - } - - message = simaka_message_create(FALSE, in->get_identifier(in), EAP_AKA, - AKA_REAUTHENTICATION, this->crypto); - if (counter_too_small(this, counter)) - { - DBG1(DBG_IKE, "reauthentication counter too small"); - message->add_attribute(message, AT_COUNTER_TOO_SMALL, chunk_empty); - } - else - { - free(this->msk.ptr); - this->msk = this->crypto->derive_keys_reauth_msk(this->crypto, - this->reauth, counter, nonce, - chunk_create(this->mk, HASH_SIZE_SHA1)); - if (id.len) - { - identification_t *reauth; - - reauth = identification_create_from_data(data); - charon->sim->card_set_reauth(charon->sim, this->permanent, reauth, - this->mk, this->counter); - reauth->destroy(reauth); - } - } - message->add_attribute(message, AT_COUNTER, counter); - *out = message->generate(message, nonce); - message->destroy(message); - return NEED_MORE; -} - -/** - * Process an EAP-AKA/Request/Notification message - */ -static status_t process_notification(private_eap_aka_peer_t *this, - simaka_message_t *in, eap_payload_t **out) -{ - simaka_message_t *message; - enumerator_t *enumerator; - simaka_attribute_t type; - chunk_t data; - bool success = TRUE; - - enumerator = in->create_attribute_enumerator(in); - while (enumerator->enumerate(enumerator, &type, &data)) - { - if (type == AT_NOTIFICATION) - { - u_int16_t code; - - memcpy(&code, data.ptr, sizeof(code)); - code = ntohs(code); - - /* test success bit */ - if (!(data.ptr[0] & 0x80)) - { - success = FALSE; - DBG1(DBG_IKE, "received EAP-AKA notification error '%N'", - simaka_notification_names, code); - } - else - { - DBG1(DBG_IKE, "received EAP-AKA notification '%N'", - simaka_notification_names, code); - } - } - else if (!simaka_attribute_skippable(type)) - { - success = FALSE; - break; - } - } - enumerator->destroy(enumerator); - - if (success) - { /* empty notification reply */ - message = simaka_message_create(FALSE, in->get_identifier(in), EAP_AKA, - AKA_NOTIFICATION, this->crypto); - *out = message->generate(message, chunk_empty); - message->destroy(message); - } - else - { - *out = create_client_error(this, in->get_identifier(in)); - } - return NEED_MORE; -} - - -/** - * Implementation of eap_method_t.process - */ -static status_t process(private_eap_aka_peer_t *this, - eap_payload_t *in, eap_payload_t **out) -{ - simaka_message_t *message; - status_t status; - - message = simaka_message_create_from_payload(in, this->crypto); - if (!message) - { - *out = create_client_error(this, in->get_identifier(in)); - return NEED_MORE; - } - if (!message->parse(message)) - { - message->destroy(message); - *out = create_client_error(this, in->get_identifier(in)); - return NEED_MORE; - } - switch (message->get_subtype(message)) - { - case AKA_IDENTITY: - status = process_identity(this, message, out); - break; - case AKA_CHALLENGE: - status = process_challenge(this, message, out); - break; - case AKA_REAUTHENTICATION: - status = process_reauthentication(this, message, out); - break; - case AKA_NOTIFICATION: - status = process_notification(this, message, out); - break; - default: - DBG1(DBG_IKE, "unable to process EAP-AKA subtype %N", - simaka_subtype_names, message->get_subtype(message)); - *out = create_client_error(this, in->get_identifier(in)); - status = NEED_MORE; - break; - } - message->destroy(message); - return status; -} - -/** - * Implementation of eap_method_t.initiate - */ -static status_t initiate(private_eap_aka_peer_t *this, eap_payload_t **out) -{ - /* peer never initiates */ - return FAILED; -} - -/** - * Implementation of eap_method_t.get_type. - */ -static eap_type_t get_type(private_eap_aka_peer_t *this, u_int32_t *vendor) -{ - *vendor = 0; - return EAP_AKA; -} - -/** - * Implementation of eap_method_t.get_msk. - */ -static status_t get_msk(private_eap_aka_peer_t *this, chunk_t *msk) -{ - if (this->msk.ptr) - { - *msk = this->msk; - return SUCCESS; - } - return FAILED; -} - -/** - * Implementation of eap_method_t.is_mutual. - */ -static bool is_mutual(private_eap_aka_peer_t *this) -{ - return TRUE; -} - -/** - * Implementation of eap_method_t.destroy. - */ -static void destroy(private_eap_aka_peer_t *this) -{ - this->crypto->destroy(this->crypto); - this->permanent->destroy(this->permanent); - DESTROY_IF(this->pseudonym); - DESTROY_IF(this->reauth); - free(this->msk.ptr); - free(this); -} - -/* - * Described in header. - */ -eap_aka_peer_t *eap_aka_peer_create(identification_t *server, - identification_t *peer) -{ - private_eap_aka_peer_t *this = malloc_thing(private_eap_aka_peer_t); - - this->public.interface.initiate = (status_t(*)(eap_method_t*,eap_payload_t**))initiate; - this->public.interface.process = (status_t(*)(eap_method_t*,eap_payload_t*,eap_payload_t**))process; - this->public.interface.get_type = (eap_type_t(*)(eap_method_t*,u_int32_t*))get_type; - this->public.interface.is_mutual = (bool(*)(eap_method_t*))is_mutual; - this->public.interface.get_msk = (status_t(*)(eap_method_t*,chunk_t*))get_msk; - this->public.interface.destroy = (void(*)(eap_method_t*))destroy; - - this->crypto = simaka_crypto_create(); - if (!this->crypto) - { - free(this); - return NULL; - } - this->permanent = peer->clone(peer); - this->pseudonym = NULL; - this->reauth = NULL; - this->msk = chunk_empty; - - return &this->public; -} - diff --git a/src/charon/plugins/eap_aka/eap_aka_peer.h b/src/charon/plugins/eap_aka/eap_aka_peer.h deleted file mode 100644 index 65a210406..000000000 --- a/src/charon/plugins/eap_aka/eap_aka_peer.h +++ /dev/null @@ -1,49 +0,0 @@ -/* - * Copyright (C) 2008-2009 Martin Willi - * Hochschule fuer Technik Rapperswil - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY - * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License - * for more details. - */ - -/** - * @defgroup eap_aka_peer eap_aka_peer - * @{ @ingroup eap_aka - */ - -#ifndef EAP_AKA_PEER_H_ -#define EAP_AKA_PEER_H_ - -typedef struct eap_aka_peer_t eap_aka_peer_t; - -#include <sa/authenticators/eap/eap_method.h> - -/** - * Implementation of the eap_method_t interface using EAP-AKA as a client. - */ -struct eap_aka_peer_t { - - /** - * Implemented eap_method_t interface. - */ - eap_method_t interface; -}; - -/** - * Creates the peer implementation of the EAP method EAP-AKA. - * - * @param server ID of the EAP server - * @param peer ID of the EAP client - * @return eap_aka_peer_t object - */ -eap_aka_peer_t *eap_aka_peer_create(identification_t *server, - identification_t *peer); - -#endif /** EAP_AKA_PEER_H_ @}*/ diff --git a/src/charon/plugins/eap_aka/eap_aka_plugin.c b/src/charon/plugins/eap_aka/eap_aka_plugin.c deleted file mode 100644 index c44a08966..000000000 --- a/src/charon/plugins/eap_aka/eap_aka_plugin.c +++ /dev/null @@ -1,51 +0,0 @@ -/* - * Copyright (C) 2008-2009 Martin Willi - * Hochschule fuer Technik Rapperswil - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY - * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License - * for more details. - */ - -#include "eap_aka_plugin.h" - -#include "eap_aka_peer.h" -#include "eap_aka_server.h" - -#include <daemon.h> - -/** - * Implementation of plugin_t.destroy - */ -static void destroy(eap_aka_plugin_t *this) -{ - charon->eap->remove_method(charon->eap, - (eap_constructor_t)eap_aka_server_create); - charon->eap->remove_method(charon->eap, - (eap_constructor_t)eap_aka_peer_create); - free(this); -} - -/* - * see header file - */ -plugin_t *plugin_create() -{ - eap_aka_plugin_t *this = malloc_thing(eap_aka_plugin_t); - - this->plugin.destroy = (void(*)(plugin_t*))destroy; - - charon->eap->add_method(charon->eap, EAP_AKA, 0, EAP_SERVER, - (eap_constructor_t)eap_aka_server_create); - charon->eap->add_method(charon->eap, EAP_AKA, 0, EAP_PEER, - (eap_constructor_t)eap_aka_peer_create); - - return &this->plugin; -} - diff --git a/src/charon/plugins/eap_aka/eap_aka_plugin.h b/src/charon/plugins/eap_aka/eap_aka_plugin.h deleted file mode 100644 index 938e5ecbd..000000000 --- a/src/charon/plugins/eap_aka/eap_aka_plugin.h +++ /dev/null @@ -1,50 +0,0 @@ -/* - * Copyright (C) 2008-2009 Martin Willi - * Hochschule fuer Technik Rapperswil - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY - * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License - * for more details. - */ - -/** - * @defgroup eap_aka eap_aka - * @ingroup cplugins - * - * @defgroup eap_aka_plugin eap_aka_plugin - * @{ @ingroup eap_aka - */ - -#ifndef EAP_AKA_PLUGIN_H_ -#define EAP_AKA_PLUGIN_H_ - -#include <plugins/plugin.h> - -typedef struct eap_aka_plugin_t eap_aka_plugin_t; - -/** - * EAP-AKA plugin. - * - * EAP-AKA uses 3rd generation mobile phone standard authentication - * mechanism for authentication, as defined RFC4187. - */ -struct eap_aka_plugin_t { - - /** - * implements plugin interface - */ - plugin_t plugin; -}; - -/** - * Create a eap_aka_plugin instance. - */ -plugin_t *plugin_create(); - -#endif /** EAP_AKA_PLUGIN_H_ @}*/ diff --git a/src/charon/plugins/eap_aka/eap_aka_server.c b/src/charon/plugins/eap_aka/eap_aka_server.c deleted file mode 100644 index 9baff3e23..000000000 --- a/src/charon/plugins/eap_aka/eap_aka_server.c +++ /dev/null @@ -1,700 +0,0 @@ -/* - * Copyright (C) 2006-2009 Martin Willi - * Hochschule fuer Technik Rapperswil - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY - * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License - * for more details. - */ - -#include "eap_aka_server.h" - -#include <daemon.h> -#include <library.h> - -#include <simaka_message.h> -#include <simaka_crypto.h> - -/** length of the AT_NONCE_S value */ -#define NONCE_LEN 16 - -typedef struct private_eap_aka_server_t private_eap_aka_server_t; - -/** - * Private data of an eap_aka_server_t object. - */ -struct private_eap_aka_server_t { - - /** - * Public authenticator_t interface. - */ - eap_aka_server_t public; - - /** - * EAP-AKA crypto helper - */ - simaka_crypto_t *crypto; - - /** - * permanent ID of the peer - */ - identification_t *permanent; - - /** - * pseudonym ID of peer - */ - identification_t *pseudonym; - - /** - * reauthentication ID of peer - */ - identification_t *reauth; - - /** - * EAP identifier value - */ - u_int8_t identifier; - - /** - * Expected Result XRES - */ - chunk_t xres; - - /** - * Random value RAND - */ - chunk_t rand; - - /** - * MSK - */ - chunk_t msk; - - /** - * Nonce value used in AT_NONCE_S - */ - chunk_t nonce; - - /** - * Counter value negotiated, network order - */ - chunk_t counter; - - /** - * Do we request fast reauthentication? - */ - bool use_reauth; - - /** - * Do we request pseudonym identities? - */ - bool use_pseudonym; - - /** - * Do we request permanent identities? - */ - bool use_permanent; - - /** - * EAP-AKA message we have initiated - */ - simaka_subtype_t pending; - - /** - * Did the client send a synchronize request? - */ - bool synchronized; -}; - -/** - * Create EAP-AKA/Request/Identity message - */ -static status_t identity(private_eap_aka_server_t *this, eap_payload_t **out) -{ - simaka_message_t *message; - - message = simaka_message_create(TRUE, this->identifier++, EAP_AKA, - AKA_IDENTITY, this->crypto); - if (this->use_reauth) - { - message->add_attribute(message, AT_ANY_ID_REQ, chunk_empty); - } - else if (this->use_pseudonym) - { - message->add_attribute(message, AT_FULLAUTH_ID_REQ, chunk_empty); - } - else if (this->use_permanent) - { - message->add_attribute(message, AT_PERMANENT_ID_REQ, chunk_empty); - } - *out = message->generate(message, chunk_empty); - message->destroy(message); - - this->pending = AKA_IDENTITY; - return NEED_MORE; -} - -/** - * Create EAP-AKA/Request/Challenge message - */ -static status_t challenge(private_eap_aka_server_t *this, eap_payload_t **out) -{ - simaka_message_t *message; - char rand[AKA_RAND_LEN], xres[AKA_RES_MAX]; - char ck[AKA_CK_LEN], ik[AKA_IK_LEN], autn[AKA_AUTN_LEN]; - int xres_len; - chunk_t data, mk; - identification_t *id; - - if (!charon->sim->provider_get_quintuplet(charon->sim, this->permanent, - rand, xres, &xres_len, ck, ik, autn)) - { - if (this->use_pseudonym) - { - /* probably received a pseudonym/reauth id we couldn't map */ - DBG1(DBG_IKE, "failed to map pseudonym/reauth identity '%Y', " - "fallback to permanent identity request", this->permanent); - this->use_pseudonym = FALSE; - DESTROY_IF(this->pseudonym); - this->pseudonym = NULL; - return identity(this, out); - } - return FAILED; - } - id = this->permanent; - if (this->pseudonym) - { - id = this->pseudonym; - } - data = chunk_cata("cc", chunk_create(ik, AKA_IK_LEN), - chunk_create(ck, AKA_CK_LEN)); - free(this->msk.ptr); - this->msk = this->crypto->derive_keys_full(this->crypto, id, data, &mk); - this->rand = chunk_clone(chunk_create(rand, AKA_RAND_LEN)); - this->xres = chunk_clone(chunk_create(xres, xres_len)); - - message = simaka_message_create(TRUE, this->identifier++, EAP_AKA, - AKA_CHALLENGE, this->crypto); - message->add_attribute(message, AT_RAND, this->rand); - message->add_attribute(message, AT_AUTN, chunk_create(autn, AKA_AUTN_LEN)); - id = charon->sim->provider_gen_reauth(charon->sim, this->permanent, mk.ptr); - if (id) - { - message->add_attribute(message, AT_NEXT_REAUTH_ID, - id->get_encoding(id)); - id->destroy(id); - } - else - { - id = charon->sim->provider_gen_pseudonym(charon->sim, this->permanent); - if (id) - { - message->add_attribute(message, AT_NEXT_PSEUDONYM, - id->get_encoding(id)); - id->destroy(id); - } - } - *out = message->generate(message, chunk_empty); - message->destroy(message); - - free(mk.ptr); - this->pending = AKA_CHALLENGE; - return NEED_MORE; -} - -/** - * Initiate EAP-AKA/Request/Re-authentication message - */ -static status_t reauthenticate(private_eap_aka_server_t *this, - char mk[HASH_SIZE_SHA1], u_int16_t counter, - eap_payload_t **out) -{ - simaka_message_t *message; - identification_t *next; - chunk_t mkc; - rng_t *rng; - - DBG1(DBG_IKE, "initiating EAP-AKA reauthentication"); - - rng = this->crypto->get_rng(this->crypto); - rng->allocate_bytes(rng, NONCE_LEN, &this->nonce); - - mkc = chunk_create(mk, HASH_SIZE_SHA1); - counter = htons(counter); - this->counter = chunk_clone(chunk_create((char*)&counter, sizeof(counter))); - - this->crypto->derive_keys_reauth(this->crypto, mkc); - this->msk = this->crypto->derive_keys_reauth_msk(this->crypto, - this->reauth, this->counter, this->nonce, mkc); - - message = simaka_message_create(TRUE, this->identifier++, EAP_AKA, - AKA_REAUTHENTICATION, this->crypto); - message->add_attribute(message, AT_COUNTER, this->counter); - message->add_attribute(message, AT_NONCE_S, this->nonce); - next = charon->sim->provider_gen_reauth(charon->sim, this->permanent, mk); - if (next) - { - message->add_attribute(message, AT_NEXT_REAUTH_ID, - next->get_encoding(next)); - next->destroy(next); - } - *out = message->generate(message, chunk_empty); - message->destroy(message); - - this->pending = SIM_REAUTHENTICATION; - return NEED_MORE; -} - -/** - * Implementation of eap_method_t.initiate - */ -static status_t initiate(private_eap_aka_server_t *this, eap_payload_t **out) -{ - if (this->use_permanent || this->use_pseudonym || this->use_reauth) - { - return identity(this, out); - } - return challenge(this, out); -} - -/** - * Process EAP-AKA/Response/Identity message - */ -static status_t process_identity(private_eap_aka_server_t *this, - simaka_message_t *in, eap_payload_t **out) -{ - identification_t *permanent, *id; - enumerator_t *enumerator; - simaka_attribute_t type; - chunk_t data, identity = chunk_empty; - - if (this->pending != AKA_IDENTITY) - { - DBG1(DBG_IKE, "received %N, but not expected", - simaka_subtype_names, AKA_IDENTITY); - return FAILED; - } - - enumerator = in->create_attribute_enumerator(in); - while (enumerator->enumerate(enumerator, &type, &data)) - { - switch (type) - { - case AT_IDENTITY: - identity = data; - break; - default: - if (!simaka_attribute_skippable(type)) - { - enumerator->destroy(enumerator); - return FAILED; - } - break; - } - } - enumerator->destroy(enumerator); - - if (!identity.len) - { - DBG1(DBG_IKE, "received incomplete Identity response"); - return FAILED; - } - - id = identification_create_from_data(identity); - if (this->use_reauth) - { - char mk[HASH_SIZE_SHA1]; - u_int16_t counter; - - permanent = charon->sim->provider_is_reauth(charon->sim, id, - mk, &counter); - if (permanent) - { - this->permanent->destroy(this->permanent); - this->permanent = permanent; - this->reauth = id; - return reauthenticate(this, mk, counter, out); - } - /* unable to map, maybe a pseudonym? */ - DBG1(DBG_IKE, "'%Y' is not a reauth identity", id); - this->use_reauth = FALSE; - } - if (this->use_pseudonym) - { - permanent = charon->sim->provider_is_pseudonym(charon->sim, id); - if (permanent) - { - this->permanent->destroy(this->permanent); - this->permanent = permanent; - this->pseudonym = id->clone(id); - /* we already have a new permanent identity now */ - this->use_permanent = FALSE; - } - else - { - DBG1(DBG_IKE, "'%Y' is not a pseudonym", id); - } - } - if (!this->pseudonym && this->use_permanent) - { - /* got a permanent identity or a pseudonym reauth id wou couldn't map, - * try to get quintuplets */ - DBG1(DBG_IKE, "received identity '%Y'", id); - this->permanent->destroy(this->permanent); - this->permanent = id->clone(id); - } - id->destroy(id); - - return challenge(this, out); -} - -/** - * Process EAP-AKA/Response/Challenge message - */ -static status_t process_challenge(private_eap_aka_server_t *this, - simaka_message_t *in) -{ - enumerator_t *enumerator; - simaka_attribute_t type; - chunk_t data, res = chunk_empty; - - if (this->pending != AKA_CHALLENGE) - { - DBG1(DBG_IKE, "received %N, but not expected", - simaka_subtype_names, AKA_CHALLENGE); - return FAILED; - } - /* verify MAC of EAP message, AT_MAC */ - if (!in->verify(in, chunk_empty)) - { - return FAILED; - } - enumerator = in->create_attribute_enumerator(in); - while (enumerator->enumerate(enumerator, &type, &data)) - { - switch (type) - { - case AT_RES: - res = data; - break; - default: - if (!simaka_attribute_skippable(type)) - { - enumerator->destroy(enumerator); - return FAILED; - } - break; - } - } - enumerator->destroy(enumerator); - - /* compare received RES against stored XRES */ - if (!chunk_equals(res, this->xres)) - { - DBG1(DBG_IKE, "received RES does not match XRES"); - return FAILED; - } - return SUCCESS; -} - -/** - * process an EAP-AKA/Response/Reauthentication message - */ -static status_t process_reauthentication(private_eap_aka_server_t *this, - simaka_message_t *in, eap_payload_t **out) -{ - enumerator_t *enumerator; - simaka_attribute_t type; - chunk_t data, counter = chunk_empty; - bool too_small = FALSE; - - if (this->pending != AKA_REAUTHENTICATION) - { - DBG1(DBG_IKE, "received %N, but not expected", - simaka_subtype_names, AKA_REAUTHENTICATION); - return FAILED; - } - /* verify AT_MAC attribute, signature is over "EAP packet | NONCE_S" */ - if (!in->verify(in, this->nonce)) - { - return FAILED; - } - - enumerator = in->create_attribute_enumerator(in); - while (enumerator->enumerate(enumerator, &type, &data)) - { - switch (type) - { - case AT_COUNTER: - counter = data; - break; - case AT_COUNTER_TOO_SMALL: - too_small = TRUE; - break; - default: - if (!simaka_attribute_skippable(type)) - { - enumerator->destroy(enumerator); - return FAILED; - } - break; - } - } - enumerator->destroy(enumerator); - - if (too_small) - { - DBG1(DBG_IKE, "received %N, initiating full authentication", - simaka_attribute_names, AT_COUNTER_TOO_SMALL); - this->use_reauth = FALSE; - this->crypto->clear_keys(this->crypto); - return challenge(this, out); - } - if (!chunk_equals(counter, this->counter)) - { - DBG1(DBG_IKE, "received counter does not match"); - return FAILED; - } - return SUCCESS; -} - -/** - * Process EAP-AKA/Response/SynchronizationFailure message - */ -static status_t process_synchronize(private_eap_aka_server_t *this, - simaka_message_t *in, eap_payload_t **out) -{ - enumerator_t *enumerator; - simaka_attribute_t type; - chunk_t data, auts = chunk_empty; - - if (this->synchronized) - { - DBG1(DBG_IKE, "received %N, but peer did already resynchronize", - simaka_subtype_names, AKA_SYNCHRONIZATION_FAILURE); - return FAILED; - } - - DBG1(DBG_IKE, "received synchronization request, retrying..."); - - enumerator = in->create_attribute_enumerator(in); - while (enumerator->enumerate(enumerator, &type, &data)) - { - switch (type) - { - case AT_AUTS: - auts = data; - break; - default: - if (!simaka_attribute_skippable(type)) - { - enumerator->destroy(enumerator); - return FAILED; - } - break; - } - } - enumerator->destroy(enumerator); - - if (!auts.len) - { - DBG1(DBG_IKE, "synchronization request didn't contain usable AUTS"); - return FAILED; - } - - if (!charon->sim->provider_resync(charon->sim, this->permanent, - this->rand.ptr, auts.ptr)) - { - DBG1(DBG_IKE, "no AKA provider found supporting " - "resynchronization for '%Y'", this->permanent); - return FAILED; - } - this->synchronized = TRUE; - return challenge(this, out); -} - -/** - * Process EAP-AKA/Response/ClientErrorCode message - */ -static status_t process_client_error(private_eap_aka_server_t *this, - simaka_message_t *in) -{ - enumerator_t *enumerator; - simaka_attribute_t type; - chunk_t data; - - enumerator = in->create_attribute_enumerator(in); - while (enumerator->enumerate(enumerator, &type, &data)) - { - if (type == AT_CLIENT_ERROR_CODE) - { - u_int16_t code; - - memcpy(&code, data.ptr, sizeof(code)); - DBG1(DBG_IKE, "received EAP-AKA client error '%N'", - simaka_client_error_names, ntohs(code)); - } - else if (!simaka_attribute_skippable(type)) - { - break; - } - } - enumerator->destroy(enumerator); - return FAILED; -} - -/** - * Process EAP-AKA/Response/AuthenticationReject message - */ -static status_t process_authentication_reject(private_eap_aka_server_t *this, - simaka_message_t *in) -{ - DBG1(DBG_IKE, "received %N, authentication failed", - simaka_subtype_names, in->get_subtype(in)); - return FAILED; -} - -/** - * Implementation of eap_method_t.process - */ -static status_t process(private_eap_aka_server_t *this, - eap_payload_t *in, eap_payload_t **out) -{ - simaka_message_t *message; - status_t status; - - message = simaka_message_create_from_payload(in, this->crypto); - if (!message) - { - return FAILED; - } - if (!message->parse(message)) - { - message->destroy(message); - return FAILED; - } - switch (message->get_subtype(message)) - { - case AKA_IDENTITY: - status = process_identity(this, message, out); - break; - case AKA_CHALLENGE: - status = process_challenge(this, message); - break; - case AKA_REAUTHENTICATION: - status = process_reauthentication(this, message, out); - break; - case AKA_SYNCHRONIZATION_FAILURE: - status = process_synchronize(this, message, out); - break; - case AKA_CLIENT_ERROR: - status = process_client_error(this, message); - break; - case AKA_AUTHENTICATION_REJECT: - status = process_authentication_reject(this, message); - break; - default: - DBG1(DBG_IKE, "unable to process EAP-AKA subtype %N", - simaka_subtype_names, message->get_subtype(message)); - status = FAILED; - break; - } - message->destroy(message); - return status; -} - -/** - * Implementation of eap_method_t.get_type. - */ -static eap_type_t get_type(private_eap_aka_server_t *this, u_int32_t *vendor) -{ - *vendor = 0; - return EAP_AKA; -} - -/** - * Implementation of eap_method_t.get_msk. - */ -static status_t get_msk(private_eap_aka_server_t *this, chunk_t *msk) -{ - if (this->msk.ptr) - { - *msk = this->msk; - return SUCCESS; - } - return FAILED; -} - -/** - * Implementation of eap_method_t.is_mutual. - */ -static bool is_mutual(private_eap_aka_server_t *this) -{ - return TRUE; -} - -/** - * Implementation of eap_method_t.destroy. - */ -static void destroy(private_eap_aka_server_t *this) -{ - this->crypto->destroy(this->crypto); - this->permanent->destroy(this->permanent); - DESTROY_IF(this->pseudonym); - DESTROY_IF(this->reauth); - free(this->xres.ptr); - free(this->rand.ptr); - free(this->nonce.ptr); - free(this->msk.ptr); - free(this->counter.ptr); - free(this); -} - -/* - * Described in header. - */ -eap_aka_server_t *eap_aka_server_create(identification_t *server, - identification_t *peer) -{ - private_eap_aka_server_t *this = malloc_thing(private_eap_aka_server_t); - - this->public.interface.initiate = (status_t(*)(eap_method_t*,eap_payload_t**))initiate; - this->public.interface.process = (status_t(*)(eap_method_t*,eap_payload_t*,eap_payload_t**))process; - this->public.interface.get_type = (eap_type_t(*)(eap_method_t*,u_int32_t*))get_type; - this->public.interface.is_mutual = (bool(*)(eap_method_t*))is_mutual; - this->public.interface.get_msk = (status_t(*)(eap_method_t*,chunk_t*))get_msk; - this->public.interface.destroy = (void(*)(eap_method_t*))destroy; - - this->crypto = simaka_crypto_create(); - if (!this->crypto) - { - free(this); - return NULL; - } - this->permanent = peer->clone(peer); - this->pseudonym = NULL; - this->reauth = NULL; - this->xres = chunk_empty; - this->rand = chunk_empty; - this->nonce = chunk_empty; - this->msk = chunk_empty; - this->counter = chunk_empty; - this->pending = 0; - this->synchronized = FALSE; - this->use_reauth = this->use_pseudonym = this->use_permanent = - lib->settings->get_bool(lib->settings, - "charon.plugins.eap-aka.request_identity", TRUE); - /* generate a non-zero identifier */ - do { - this->identifier = random(); - } while (!this->identifier); - - return &this->public; -} - diff --git a/src/charon/plugins/eap_aka/eap_aka_server.h b/src/charon/plugins/eap_aka/eap_aka_server.h deleted file mode 100644 index d48fc4c34..000000000 --- a/src/charon/plugins/eap_aka/eap_aka_server.h +++ /dev/null @@ -1,49 +0,0 @@ -/* - * Copyright (C) 2008-2009 Martin Willi - * Hochschule fuer Technik Rapperswil - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY - * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License - * for more details. - */ - -/** - * @defgroup eap_aka_server eap_aka_server - * @{ @ingroup eap_aka - */ - -#ifndef EAP_AKA_SERVER_H_ -#define EAP_AKA_SERVER_H_ - -typedef struct eap_aka_server_t eap_aka_server_t; - -#include <sa/authenticators/eap/eap_method.h> - -/** - * Implementation of the eap_method_t interface using EAP-AKA as server. - */ -struct eap_aka_server_t { - - /** - * Implemented eap_method_t interface. - */ - eap_method_t interface; -}; - -/** - * Creates the server implementation of the EAP method EAP-AKA. - * - * @param server ID of the EAP server - * @param peer ID of the EAP client - * @return eap_aka_server_t object - */ -eap_aka_server_t *eap_aka_server_create(identification_t *server, - identification_t *peer); - -#endif /** EAP_AKA_SERVER_H_ @}*/ |