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authorRene Mayrhofer <rene@mayrhofer.eu.org>2010-05-25 19:01:36 +0000
committerRene Mayrhofer <rene@mayrhofer.eu.org>2010-05-25 19:01:36 +0000
commit1ac70afcc1f7d6d2738a34308810719b0976d29f (patch)
tree805f6ce2a15d1a717781d7cbceac8408a74b6b0c /src/charon/plugins/eap_md5/eap_md5.c
parented7d79f96177044949744da10f4431c1d6242241 (diff)
downloadvyos-strongswan-1ac70afcc1f7d6d2738a34308810719b0976d29f.tar.gz
vyos-strongswan-1ac70afcc1f7d6d2738a34308810719b0976d29f.zip
[svn-upgrade] Integrating new upstream version, strongswan (4.4.0)
Diffstat (limited to 'src/charon/plugins/eap_md5/eap_md5.c')
-rw-r--r--src/charon/plugins/eap_md5/eap_md5.c303
1 files changed, 0 insertions, 303 deletions
diff --git a/src/charon/plugins/eap_md5/eap_md5.c b/src/charon/plugins/eap_md5/eap_md5.c
deleted file mode 100644
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--- a/src/charon/plugins/eap_md5/eap_md5.c
+++ /dev/null
@@ -1,303 +0,0 @@
-/*
- * Copyright (C) 2007 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_md5.h"
-
-#include <daemon.h>
-#include <library.h>
-#include <crypto/hashers/hasher.h>
-
-typedef struct private_eap_md5_t private_eap_md5_t;
-
-/**
- * Private data of an eap_md5_t object.
- */
-struct private_eap_md5_t {
-
- /**
- * Public authenticator_t interface.
- */
- eap_md5_t public;
-
- /**
- * ID of the server
- */
- identification_t *server;
-
- /**
- * ID of the peer
- */
- identification_t *peer;
-
- /**
- * challenge sent by the server
- */
- chunk_t challenge;
-
- /**
- * EAP message identififier
- */
- u_int8_t identifier;
-};
-
-typedef struct eap_md5_header_t eap_md5_header_t;
-
-/**
- * packed eap MD5 header struct
- */
-struct eap_md5_header_t {
- /** EAP code (REQUEST/RESPONSE) */
- u_int8_t code;
- /** unique message identifier */
- u_int8_t identifier;
- /** length of whole message */
- u_int16_t length;
- /** EAP type */
- u_int8_t type;
- /** length of value (challenge) */
- u_int8_t value_size;
- /** actual value */
- u_int8_t value[];
-} __attribute__((__packed__));
-
-#define CHALLENGE_LEN 16
-#define PAYLOAD_LEN (CHALLENGE_LEN + sizeof(eap_md5_header_t))
-
-/**
- * Hash the challenge string, create response
- */
-static status_t hash_challenge(private_eap_md5_t *this, chunk_t *response,
- identification_t *me, identification_t *other)
-{
- shared_key_t *shared;
- chunk_t concat;
- hasher_t *hasher;
-
- shared = charon->credentials->get_shared(charon->credentials, SHARED_EAP,
- me, other);
- if (shared == NULL)
- {
- DBG1(DBG_IKE, "no EAP key found for hosts '%Y' - '%Y'", me, other);
- return NOT_FOUND;
- }
- concat = chunk_cata("ccc", chunk_from_thing(this->identifier),
- shared->get_key(shared), this->challenge);
- shared->destroy(shared);
- hasher = lib->crypto->create_hasher(lib->crypto, HASH_MD5);
- if (hasher == NULL)
- {
- DBG1(DBG_IKE, "EAP-MD5 failed, MD5 not supported");
- return FAILED;
- }
- hasher->allocate_hash(hasher, concat, response);
- hasher->destroy(hasher);
- return SUCCESS;
-}
-
-/**
- * Implementation of eap_method_t.initiate for the peer
- */
-static status_t initiate_peer(private_eap_md5_t *this, eap_payload_t **out)
-{
- /* peer never initiates */
- return FAILED;
-}
-
-/**
- * Implementation of eap_method_t.initiate for the server
- */
-static status_t initiate_server(private_eap_md5_t *this, eap_payload_t **out)
-{
- rng_t *rng;
- eap_md5_header_t *req;
-
- rng = lib->crypto->create_rng(lib->crypto, RNG_WEAK);
- if (!rng)
- {
- return FAILED;
- }
- rng->allocate_bytes(rng, CHALLENGE_LEN, &this->challenge);
- rng->destroy(rng);
-
- req = alloca(PAYLOAD_LEN);
- req->length = htons(PAYLOAD_LEN);
- req->code = EAP_REQUEST;
- req->identifier = this->identifier;
- req->type = EAP_MD5;
- req->value_size = this->challenge.len;
- memcpy(req->value, this->challenge.ptr, this->challenge.len);
-
- *out = eap_payload_create_data(chunk_create((void*)req, PAYLOAD_LEN));
- return NEED_MORE;
-}
-
-/**
- * Implementation of eap_method_t.process for the peer
- */
-static status_t process_peer(private_eap_md5_t *this,
- eap_payload_t *in, eap_payload_t **out)
-{
- chunk_t response;
- chunk_t data;
- eap_md5_header_t *req;
-
- this->identifier = in->get_identifier(in);
- data = in->get_data(in);
- this->challenge = chunk_clone(chunk_skip(data, 6));
- if (data.len < 6 || this->challenge.len < *(data.ptr + 5))
- {
- DBG1(DBG_IKE, "received invalid EAP-MD5 message");
- return FAILED;
- }
- if (hash_challenge(this, &response, this->peer, this->server) != SUCCESS)
- {
- return FAILED;
- }
- req = alloca(PAYLOAD_LEN);
- req->length = htons(PAYLOAD_LEN);
- req->code = EAP_RESPONSE;
- req->identifier = this->identifier;
- req->type = EAP_MD5;
- req->value_size = response.len;
- memcpy(req->value, response.ptr, response.len);
- chunk_free(&response);
-
- *out = eap_payload_create_data(chunk_create((void*)req, PAYLOAD_LEN));
- return NEED_MORE;
-}
-
-/**
- * Implementation of eap_method_t.process for the server
- */
-static status_t process_server(private_eap_md5_t *this,
- eap_payload_t *in, eap_payload_t **out)
-{
- chunk_t response, expected;
- chunk_t data;
-
- if (this->identifier != in->get_identifier(in))
- {
- DBG1(DBG_IKE, "received invalid EAP-MD5 message");
- return FAILED;
- }
- if (hash_challenge(this, &expected, this->server, this->peer) != SUCCESS)
- {
- return FAILED;
- }
- data = in->get_data(in);
- response = chunk_skip(data, 6);
-
- if (response.len < expected.len ||
- !memeq(response.ptr, expected.ptr, expected.len))
- {
- chunk_free(&expected);
- DBG1(DBG_IKE, "EAP-MD5 verification failed");
- return FAILED;
- }
- chunk_free(&expected);
- return SUCCESS;
-}
-
-/**
- * Implementation of eap_method_t.get_type.
- */
-static eap_type_t get_type(private_eap_md5_t *this, u_int32_t *vendor)
-{
- *vendor = 0;
- return EAP_MD5;
-}
-
-/**
- * Implementation of eap_method_t.get_msk.
- */
-static status_t get_msk(private_eap_md5_t *this, chunk_t *msk)
-{
- return FAILED;
-}
-
-/**
- * Implementation of eap_method_t.is_mutual.
- */
-static bool is_mutual(private_eap_md5_t *this)
-{
- return FALSE;
-}
-
-/**
- * Implementation of eap_method_t.destroy.
- */
-static void destroy(private_eap_md5_t *this)
-{
- this->peer->destroy(this->peer);
- this->server->destroy(this->server);
- chunk_free(&this->challenge);
- free(this);
-}
-
-/**
- * Generic constructor
- */
-static private_eap_md5_t *eap_md5_create_generic(identification_t *server,
- identification_t *peer)
-{
- private_eap_md5_t *this = malloc_thing(private_eap_md5_t);
-
- this->public.eap_method_interface.initiate = NULL;
- this->public.eap_method_interface.process = NULL;
- this->public.eap_method_interface.get_type = (eap_type_t(*)(eap_method_t*,u_int32_t*))get_type;
- this->public.eap_method_interface.is_mutual = (bool(*)(eap_method_t*))is_mutual;
- this->public.eap_method_interface.get_msk = (status_t(*)(eap_method_t*,chunk_t*))get_msk;
- this->public.eap_method_interface.destroy = (void(*)(eap_method_t*))destroy;
-
- /* private data */
- this->peer = peer->clone(peer);
- this->server = server->clone(server);
- this->challenge = chunk_empty;
- this->identifier = 0;
-
- return this;
-}
-
-/*
- * see header
- */
-eap_md5_t *eap_md5_create_server(identification_t *server, identification_t *peer)
-{
- private_eap_md5_t *this = eap_md5_create_generic(server, peer);
-
- this->public.eap_method_interface.initiate = (status_t(*)(eap_method_t*,eap_payload_t**))initiate_server;
- this->public.eap_method_interface.process = (status_t(*)(eap_method_t*,eap_payload_t*,eap_payload_t**))process_server;
-
- /* generate a non-zero identifier */
- do {
- this->identifier = random();
- } while (!this->identifier);
-
- return &this->public;
-}
-
-/*
- * see header
- */
-eap_md5_t *eap_md5_create_peer(identification_t *server, identification_t *peer)
-{
- private_eap_md5_t *this = eap_md5_create_generic(server, peer);
-
- this->public.eap_method_interface.initiate = (status_t(*)(eap_method_t*,eap_payload_t**))initiate_peer;
- this->public.eap_method_interface.process = (status_t(*)(eap_method_t*,eap_payload_t*,eap_payload_t**))process_peer;
-
- return &this->public;
-}
-