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author | Sam Leffler <sam@FreeBSD.org> | 2005-06-05 20:52:14 +0000 |
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committer | Sam Leffler <sam@FreeBSD.org> | 2005-06-05 20:52:14 +0000 |
commit | f1fb6907abb279cfabe81d79e2ffac54c4e7aa98 (patch) | |
tree | 98be326632e2ea3857ee0d9f831c91ea0823bb0d /contrib/wpa_supplicant/eap_md5.c | |
download | src-f1fb6907abb279cfabe81d79e2ffac54c4e7aa98.tar.gz src-f1fb6907abb279cfabe81d79e2ffac54c4e7aa98.zip |
Stripped down import of wpa_supplicant v0.3.8vendor/wpa_supplicant/0.3.8
Notes
Notes:
svn path=/vendor/wpa_supplicant/dist/; revision=147013
svn path=/vendor/wpa_supplicant/0.3.8/; revision=147015; tag=vendor/wpa_supplicant/0.3.8
Diffstat (limited to 'contrib/wpa_supplicant/eap_md5.c')
-rw-r--r-- | contrib/wpa_supplicant/eap_md5.c | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/contrib/wpa_supplicant/eap_md5.c b/contrib/wpa_supplicant/eap_md5.c new file mode 100644 index 000000000000..bcb5558be97e --- /dev/null +++ b/contrib/wpa_supplicant/eap_md5.c @@ -0,0 +1,112 @@ +/* + * WPA Supplicant / EAP-MD5 + * Copyright (c) 2004-2005, Jouni Malinen <jkmaline@cc.hut.fi> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * Alternatively, this software may be distributed under the terms of BSD + * license. + * + * See README and COPYING for more details. + */ + +#include <stdlib.h> +#include <stdio.h> + +#include "common.h" +#include "eap_i.h" +#include "wpa_supplicant.h" +#include "config_ssid.h" +#include "md5.h" + + +static void * eap_md5_init(struct eap_sm *sm) +{ + return (void *) 1; +} + + +static void eap_md5_deinit(struct eap_sm *sm, void *priv) +{ +} + + +static u8 * eap_md5_process(struct eap_sm *sm, void *priv, + struct eap_method_ret *ret, + u8 *reqData, size_t reqDataLen, + size_t *respDataLen) +{ + struct wpa_ssid *config = eap_get_config(sm); + struct eap_hdr *req, *resp; + u8 *pos, *challenge; + int challenge_len; + MD5_CTX context; + size_t len; + + if (config == NULL || config->password == NULL) { + wpa_printf(MSG_INFO, "EAP-MD5: Password not configured"); + eap_sm_request_password(sm, config); + ret->ignore = TRUE; + return NULL; + } + + req = (struct eap_hdr *) reqData; + pos = (u8 *) (req + 1); + if (reqDataLen < sizeof(*req) + 2 || *pos != EAP_TYPE_MD5 || + (len = be_to_host16(req->length)) > reqDataLen) { + wpa_printf(MSG_INFO, "EAP-MD5: Invalid frame"); + ret->ignore = TRUE; + return NULL; + } + pos++; + challenge_len = *pos++; + if (challenge_len == 0 || + challenge_len > len - sizeof(*req) - 2) { + wpa_printf(MSG_INFO, "EAP-MD5: Invalid challenge " + "(challenge_len=%d len=%lu", + challenge_len, (unsigned long) len); + ret->ignore = TRUE; + return NULL; + } + ret->ignore = FALSE; + challenge = pos; + wpa_hexdump(MSG_MSGDUMP, "EAP-MD5: Challenge", + challenge, challenge_len); + + wpa_printf(MSG_DEBUG, "EAP-MD5: generating Challenge Response"); + ret->methodState = METHOD_DONE; + ret->decision = DECISION_UNCOND_SUCC; + ret->allowNotifications = TRUE; + + *respDataLen = sizeof(struct eap_hdr) + 1 + 1 + MD5_MAC_LEN; + resp = malloc(*respDataLen); + if (resp == NULL) + return NULL; + resp->code = EAP_CODE_RESPONSE; + resp->identifier = req->identifier; + resp->length = host_to_be16(*respDataLen); + pos = (u8 *) (resp + 1); + *pos++ = EAP_TYPE_MD5; + *pos++ = MD5_MAC_LEN; /* Value-Size */ + + MD5Init(&context); + MD5Update(&context, &resp->identifier, 1); + MD5Update(&context, config->password, config->password_len); + MD5Update(&context, challenge, challenge_len); + MD5Final(pos, &context); + wpa_hexdump(MSG_MSGDUMP, "EAP-MD5: Response", pos, MD5_MAC_LEN); + + return (u8 *) resp; +} + + +const struct eap_method eap_method_md5 = +{ + .method = EAP_TYPE_MD5, + .name = "MD5", + .init = eap_md5_init, + .deinit = eap_md5_deinit, + .process = eap_md5_process, +}; |