diff options
Diffstat (limited to 'contrib/wpa_supplicant/eap_tlv.c')
-rw-r--r-- | contrib/wpa_supplicant/eap_tlv.c | 204 |
1 files changed, 0 insertions, 204 deletions
diff --git a/contrib/wpa_supplicant/eap_tlv.c b/contrib/wpa_supplicant/eap_tlv.c deleted file mode 100644 index e5f29b6..0000000 --- a/contrib/wpa_supplicant/eap_tlv.c +++ /dev/null @@ -1,204 +0,0 @@ -/* - * EAP peer method: EAP-TLV (draft-josefsson-pppext-eap-tls-eap-07.txt) - * Copyright (c) 2004-2008, Jouni Malinen <j@w1.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 "includes.h" - -#include "common.h" -#include "eap_i.h" -#include "eap_tlv.h" - - -/** - * eap_tlv_build_nak - Build EAP-TLV NAK message - * @id: EAP identifier for the header - * @nak_type: TLV type (EAP_TLV_*) - * @resp_len: Buffer for returning the response length - * Returns: Buffer to the allocated EAP-TLV NAK message or %NULL on failure - * - * This funtion builds an EAP-TLV NAK message. The caller is responsible for - * freeing the returned buffer. - */ -u8 * eap_tlv_build_nak(int id, u16 nak_type, size_t *resp_len) -{ - struct eap_hdr *hdr; - u8 *pos; - - hdr = eap_msg_alloc(EAP_VENDOR_IETF, EAP_TYPE_TLV, resp_len, - 10, EAP_CODE_RESPONSE, id, &pos); - if (hdr == NULL) - return NULL; - - *pos++ = 0x80; /* Mandatory */ - *pos++ = EAP_TLV_NAK_TLV; - /* Length */ - *pos++ = 0; - *pos++ = 6; - /* Vendor-Id */ - *pos++ = 0; - *pos++ = 0; - *pos++ = 0; - *pos++ = 0; - /* NAK-Type */ - WPA_PUT_BE16(pos, nak_type); - - return (u8 *) hdr; -} - - -/** - * eap_tlv_build_result - Build EAP-TLV Result message - * @id: EAP identifier for the header - * @status: Status (EAP_TLV_RESULT_SUCCESS or EAP_TLV_RESULT_FAILURE) - * @resp_len: Buffer for returning the response length - * Returns: Buffer to the allocated EAP-TLV Result message or %NULL on failure - * - * This funtion builds an EAP-TLV Result message. The caller is responsible for - * freeing the returned buffer. - */ -u8 * eap_tlv_build_result(int id, u16 status, size_t *resp_len) -{ - struct eap_hdr *hdr; - u8 *pos; - - hdr = eap_msg_alloc(EAP_VENDOR_IETF, EAP_TYPE_TLV, resp_len, - 6, EAP_CODE_RESPONSE, id, &pos); - if (hdr == NULL) - return NULL; - - *pos++ = 0x80; /* Mandatory */ - *pos++ = EAP_TLV_RESULT_TLV; - /* Length */ - *pos++ = 0; - *pos++ = 2; - /* Status */ - WPA_PUT_BE16(pos, status); - - return (u8 *) hdr; -} - - -/** - * eap_tlv_process - Process a received EAP-TLV message and generate a response - * @sm: Pointer to EAP state machine allocated with eap_sm_init() - * @ret: Return values from EAP request validation and processing - * @hdr: EAP-TLV request to be processed. The caller must have validated that - * the buffer is large enough to contain full request (hdr->length bytes) and - * that the EAP type is EAP_TYPE_TLV. - * @resp: Buffer to return a pointer to the allocated response message. This - * field should be initialized to %NULL before the call. The value will be - * updated if a response message is generated. The caller is responsible for - * freeing the allocated message. - * @resp_len: Buffer for returning the response length - * Returns: 0 on success, -1 on failure - */ -int eap_tlv_process(struct eap_sm *sm, struct eap_method_ret *ret, - const struct eap_hdr *hdr, u8 **resp, size_t *resp_len, - int force_failure) -{ - size_t left, tlv_len; - const u8 *pos; - const u8 *result_tlv = NULL; - size_t result_tlv_len = 0; - int tlv_type, mandatory; - - /* Parse TLVs */ - left = be_to_host16(hdr->length) - sizeof(struct eap_hdr) - 1; - pos = (const u8 *) (hdr + 1); - pos++; - wpa_hexdump(MSG_DEBUG, "EAP-TLV: Received TLVs", pos, left); - while (left >= 4) { - mandatory = !!(pos[0] & 0x80); - tlv_type = WPA_GET_BE16(pos) & 0x3fff; - pos += 2; - tlv_len = WPA_GET_BE16(pos); - pos += 2; - left -= 4; - if (tlv_len > left) { - wpa_printf(MSG_DEBUG, "EAP-TLV: TLV underrun " - "(tlv_len=%lu left=%lu)", - (unsigned long) tlv_len, - (unsigned long) left); - return -1; - } - switch (tlv_type) { - case EAP_TLV_RESULT_TLV: - result_tlv = pos; - result_tlv_len = tlv_len; - break; - default: - wpa_printf(MSG_DEBUG, "EAP-TLV: Unsupported TLV Type " - "%d%s", tlv_type, - mandatory ? " (mandatory)" : ""); - if (mandatory) { - /* NAK TLV and ignore all TLVs in this packet. - */ - *resp = eap_tlv_build_nak(hdr->identifier, - tlv_type, resp_len); - return *resp == NULL ? -1 : 0; - } - /* Ignore this TLV, but process other TLVs */ - break; - } - - pos += tlv_len; - left -= tlv_len; - } - if (left) { - wpa_printf(MSG_DEBUG, "EAP-TLV: Last TLV too short in " - "Request (left=%lu)", (unsigned long) left); - return -1; - } - - /* Process supported TLVs */ - if (result_tlv) { - int status, resp_status; - wpa_hexdump(MSG_DEBUG, "EAP-TLV: Result TLV", - result_tlv, result_tlv_len); - if (result_tlv_len < 2) { - wpa_printf(MSG_INFO, "EAP-TLV: Too short Result TLV " - "(len=%lu)", - (unsigned long) result_tlv_len); - return -1; - } - status = WPA_GET_BE16(result_tlv); - if (status == EAP_TLV_RESULT_SUCCESS) { - wpa_printf(MSG_INFO, "EAP-TLV: TLV Result - Success " - "- EAP-TLV/Phase2 Completed"); - if (force_failure) { - wpa_printf(MSG_INFO, "EAP-TLV: Earlier failure" - " - force failed Phase 2"); - resp_status = EAP_TLV_RESULT_FAILURE; - ret->decision = DECISION_FAIL; - } else { - resp_status = EAP_TLV_RESULT_SUCCESS; - ret->decision = DECISION_UNCOND_SUCC; - } - } else if (status == EAP_TLV_RESULT_FAILURE) { - wpa_printf(MSG_INFO, "EAP-TLV: TLV Result - Failure"); - resp_status = EAP_TLV_RESULT_FAILURE; - ret->decision = DECISION_FAIL; - } else { - wpa_printf(MSG_INFO, "EAP-TLV: Unknown TLV Result " - "Status %d", status); - resp_status = EAP_TLV_RESULT_FAILURE; - ret->decision = DECISION_FAIL; - } - ret->methodState = METHOD_DONE; - - *resp = eap_tlv_build_result(hdr->identifier, resp_status, - resp_len); - } - - return 0; -} |