315 lines
8.8 KiB
C
315 lines
8.8 KiB
C
/*
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*
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* Wireless daemon for Linux
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*
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* Copyright (C) 2014 Intel Corporation. All rights reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#include <stdint.h>
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#include <stdbool.h>
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#include <asm/byteorder.h>
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#include <linux/types.h>
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/* 802.11, Table 8-1 "Valid type and subtype combinations" */
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enum mpdu_type {
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MPDU_TYPE_MANAGEMENT = 0,
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};
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/* 802.11, Table 8-1 "Valid type and subtype combinations" */
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enum mpdu_management_subtype {
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MPDU_MANAGEMENT_SUBTYPE_ASSOCIATION_REQUEST = 0x0,
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MPDU_MANAGEMENT_SUBTYPE_ASSOCIATION_RESPONSE = 0x1,
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MPDU_MANAGEMENT_SUBTYPE_REASSOCIATION_REQUEST = 0x2,
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MPDU_MANAGEMENT_SUBTYPE_REASSOCIATION_RESPONSE = 0x3,
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MPDU_MANAGEMENT_SUBTYPE_PROBE_REQUEST = 0x4,
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MPDU_MANAGEMENT_SUBTYPE_PROBE_RESPONSE = 0x5,
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MPDU_MANAGEMENT_SUBTYPE_TIMING_ADVERTISEMENT = 0x6,
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MPDU_MANAGEMENT_SUBTYPE_BEACON = 0x8,
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MPDU_MANAGEMENT_SUBTYPE_ATIM = 0x9,
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MPDU_MANAGEMENT_SUBTYPE_DISASSOCIATION = 0xA,
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MPDU_MANAGEMENT_SUBTYPE_AUTHENTICATION = 0xB,
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MPDU_MANAGEMENT_SUBTYPE_DEAUTHENTICATION = 0xC,
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};
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/* 802.11, Section 8.4.1.1 Authentication Algorithm Number field */
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enum mpdu_authentication_algorithm_number {
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MPDU_AUTH_ALGO_OPEN_SYSTEM = 0,
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MPDU_AUTH_ALGO_SHARED_KEY,
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};
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/*
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* 802.11-2012, Section 8.4.1.7:
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*/
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enum mpdu_reason_code {
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MPDU_REASON_CODE_UNSPECIFIED = 1,
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MPDU_REASON_CODE_PREV_AUTH_NOT_VALID = 2,
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MPDU_REASON_CODE_DEAUTH_LEAVING = 3,
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MPDU_REASON_CODE_DISASSOC_DUE_TO_INACTIVITY = 4,
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MPDU_REASON_CODE_DISASSOC_AP_BUSY = 5,
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MPDU_REASON_CODE_CLASS2_FRAME_FROM_NONAUTH_STA = 6,
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MPDU_REASON_CODE_CLASS3_FRAME_FROM_NONASSOC_STA = 7,
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MPDU_REASON_CODE_DISASSOC_STA_HAS_LEFT = 8,
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MPDU_REASON_CODE_STA_REQ_ASSOC_WITHOUT_AUTH = 9,
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/* 802.11h */
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MPDU_REASON_CODE_DISASSOC_BAD_POWER = 10,
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MPDU_REASON_CODE_DISASSOC_BAD_SUPP_CHAN = 11,
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/* 802.11i */
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MPDU_REASON_CODE_INVALID_IE = 13,
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MPDU_REASON_CODE_MIC_FAILURE = 14,
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MPDU_REASON_CODE_4WAY_HANDSHAKE_TIMEOUT = 15,
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MPDU_REASON_CODE_GROUP_KEY_HANDSHAKE_TIMEOUT = 16,
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MPDU_REASON_CODE_IE_DIFFERENT = 17,
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MPDU_REASON_CODE_INVALID_GROUP_CIPHER = 18,
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MPDU_REASON_CODE_INVALID_PAIRWISE_CIPHER = 19,
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MPDU_REASON_CODE_INVALID_AKMP = 20,
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MPDU_REASON_CODE_UNSUPP_RSN_VERSION = 21,
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MPDU_REASON_CODE_INVALID_RSN_IE_CAP = 22,
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MPDU_REASON_CODE_IEEE8021X_FAILED = 23,
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MPDU_REASON_CODE_CIPHER_SUITE_REJECTED = 24,
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/* TDLS (802.11z) */
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MPDU_REASON_CODE_TDLS_TEARDOWN_UNREACHABLE = 25,
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MPDU_REASON_CODE_TDLS_TEARDOWN_UNSPECIFIED = 26,
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/* 802.11e */
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MPDU_REASON_CODE_DISASSOC_UNSPECIFIED_QOS = 32,
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MPDU_REASON_CODE_DISASSOC_QAP_NO_BANDWIDTH = 33,
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MPDU_REASON_CODE_DISASSOC_LOW_ACK = 34,
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MPDU_REASON_CODE_DISASSOC_QAP_EXCEED_TXOP = 35,
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MPDU_REASON_CODE_QSTA_LEAVE_QBSS = 36,
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MPDU_REASON_CODE_QSTA_NOT_USE = 37,
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MPDU_REASON_CODE_QSTA_REQUIRE_SETUP = 38,
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MPDU_REASON_CODE_QSTA_TIMEOUT = 39,
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MPDU_REASON_CODE_QSTA_CIPHER_NOT_SUPP = 45,
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/* 802.11s */
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MPDU_REASON_CODE_MESH_PEER_CANCELED = 52,
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MPDU_REASON_CODE_MESH_MAX_PEERS = 53,
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MPDU_REASON_CODE_MESH_CONFIG = 54,
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MPDU_REASON_CODE_MESH_CLOSE = 55,
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MPDU_REASON_CODE_MESH_MAX_RETRIES = 56,
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MPDU_REASON_CODE_MESH_CONFIRM_TIMEOUT = 57,
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MPDU_REASON_CODE_MESH_INVALID_GTK = 58,
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MPDU_REASON_CODE_MESH_INCONSISTENT_PARAM = 59,
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MPDU_REASON_CODE_MESH_INVALID_SECURITY = 60,
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MPDU_REASON_CODE_MESH_PATH_ERROR = 61,
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MPDU_REASON_CODE_MESH_PATH_NOFORWARD = 62,
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MPDU_REASON_CODE_MESH_PATH_DEST_UNREACHABLE = 63,
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MPDU_REASON_CODE_MAC_EXISTS_IN_MBSS = 64,
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MPDU_REASON_CODE_MESH_CHAN_REGULATORY = 65,
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MPDU_REASON_CODE_MESH_CHAN = 66,
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};
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/* 802.11, Section 8.2.4.1.1, Figure 8-2 */
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struct mpdu_fc {
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#if defined(__LITTLE_ENDIAN_BITFIELD)
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uint8_t protocol_version:2;
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uint8_t type:2;
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uint8_t subtype:4;
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bool to_ds:1;
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bool from_ds:1;
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bool more_fragments:1;
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bool retry:1;
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bool power_mgmt:1;
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bool more_data:1;
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bool protected_frame:1;
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bool order:1;
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#elif defined (__BIG_ENDIAN_BITFIELD)
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uint8_t subtype:4;
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uint8_t type:2;
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uint8_t protocol_version:2;
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bool order:1;
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bool protected_frame:1;
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bool more_data:1;
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bool power_mgmt:1;
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bool retry:1;
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bool more_fragments:1;
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bool from_ds:1;
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bool to_ds:1;
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#else
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#error "Please fix <asm/byteorder.h>"
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#endif
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} __attribute__ ((packed));
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/* 802.11, Section 8.3.3.1 */
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struct mpdu_mgmt_header {
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__le16 duration;
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unsigned char address_1[6];
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unsigned char address_2[6];
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unsigned char address_3[6];
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#if defined(__LITTLE_ENDIAN_BITFIELD)
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uint8_t fragment_number:4;
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uint8_t sequence_number_low:4;
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#elif defined (__BIG_ENDIAN_BITFIELD)
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uint8_t sequence_number_low:4;
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uint8_t fragment_number:4;
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#else
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#error "Please fix <asm/byteorder.h>"
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#endif
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uint8_t sequence_number_high;
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__le32 ht_control; /* ToDo? */
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} __attribute__ ((packed));
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#define MPDU_MGMT_SEQUENCE_NUMBER(v) \
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(((v).sequence_number_high << 4) + ((v).sequence_number_low))
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/* 802.11, Section 8.4.1.4 */
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struct mpdu_field_capability {
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#if defined(__LITTLE_ENDIAN_BITFIELD)
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bool ess:1;
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bool ibss:1;
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bool cf_pollable:1;
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bool cf_poll_req:1;
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bool privacy:1;
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bool preamble:1;
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bool pbcc:1;
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bool chanl_agility:1;
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bool spectrum_mgmt:1;
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bool qos:1;
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bool short_time:1;
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bool apsd:1;
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bool radio_mesure:1;
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bool dsss_ofdm:1;
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bool delayed_ack:1;
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bool immediate_ack:1;
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#elif defined (__BIG_ENDIAN_BITFIELD)
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bool chanl_agility:1;
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bool pbcc:1;
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bool preamble:1;
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bool privacy:1;
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bool cf_poll_req:1;
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bool cf_pollable:1;
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bool ibss:1;
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bool ess:1;
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bool immediate_ack:1;
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bool delayed_ack:1;
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bool dsss_ofdm:1;
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bool radio_mesure:1;
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bool apsd:1;
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bool short_time:1;
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bool qos:1;
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bool spectrum_mgmt:1;
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#else
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#error "Please fix <asm/byteorder.h>"
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#endif
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} __attribute__ ((packed));
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/* 802.11, Section 8.3.3.5 */
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struct mpdu_association_request {
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struct mpdu_field_capability capability;
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__le16 listen_interval;
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uint8_t ies[0];
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} __attribute__ ((packed));
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/* 802.11, Section 8.3.3.6 */
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struct mpdu_association_response {
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struct mpdu_field_capability capability;
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__le16 status_code;
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__le16 aid;
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uint8_t ies[0];
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} __attribute__ ((packed));
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/* 802.11, Section 8.3.3.7 */
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struct mpdu_reassociation_request {
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struct mpdu_field_capability capability;
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__le16 listen_interval;
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unsigned char current_ap_address[6];
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uint8_t ies[0];
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} __attribute__ ((packed));
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/* 802.11, Section 8.3.3.8 */
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struct mpdu_reassociation_response {
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struct mpdu_field_capability capability;
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__le16 status_code;
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__le16 aid;
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uint8_t ies[0];
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} __attribute__ ((packed));
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/* 802.11, Section 8.3.3.4 */
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struct mpdu_disassociation {
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__le16 reason_code;
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uint8_t ies[0];
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} __attribute__ ((packed));
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/* 802.11, Section 8.3.3.9 */
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struct mpdu_probe_request {
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uint8_t ies[0];
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} __attribute__ ((packed));
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/* 802.11, Section 8.3.3.10 */
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struct mpdu_probe_response {
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uint8_t timestamp;
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__le16 beacon_interval;
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struct mpdu_field_capability capability;
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uint8_t ies[0];
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} __attribute__ ((packed));
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/* 802.11, Section 8.3.3.15 */
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struct mpdu_timing_advertisement {
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uint8_t timestamp;
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struct mpdu_field_capability capability;
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uint8_t ies[0];
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} __attribute__ ((packed));
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/* 802.11, Section 8.3.3.2 */
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struct mpdu_beacon {
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uint8_t timestamp;
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__le16 beacon_interval;
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struct mpdu_field_capability capability;
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uint8_t ies[0];
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} __attribute__ ((packed));
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/* 802.11, Section 8.3.3.11 */
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struct mpdu_authentication {
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__le16 algorithm;
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__le16 transaction_sequence;
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__le16 status;
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union {
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struct {
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uint8_t element_id;
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uint8_t challenge_text_len;
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unsigned char challenge_text[253];
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} __attribute__ ((packed)) shared_key_23;
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};
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/* ToDo: FT and SAE parts? */
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} __attribute__ ((packed));
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/* 802.11, Section 8.3.3.12 */
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struct mpdu_deauthentication {
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__le16 reason_code;
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uint8_t ies[0];
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} __attribute__ ((packed));
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struct mpdu {
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struct mpdu_fc fc;
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struct mpdu_mgmt_header mgmt_hdr;
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union {
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struct mpdu_association_request assoc_req;
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struct mpdu_association_response assoc_resp;
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struct mpdu_reassociation_request reassoc_req;
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struct mpdu_reassociation_response reassoc_resp;
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struct mpdu_probe_request probe_req;
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struct mpdu_probe_response probe_resp;
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struct mpdu_timing_advertisement time_advert;
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struct mpdu_beacon beacon;
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struct mpdu_disassociation disassoc;
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struct mpdu_authentication auth;
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struct mpdu_deauthentication deauth;
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};
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} __attribute__ ((packed));
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const struct mpdu *mpdu_validate(const uint8_t *frame, int len);
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