287 lines
11 KiB
C
287 lines
11 KiB
C
/*
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*
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* Wireless daemon for Linux
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*
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* Copyright (C) 2013-2014 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 <stdbool.h>
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#include <stddef.h>
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/*
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* Information elements, IEEE Std 802.11 ch. 8.4.2
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*/
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enum ie_type {
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IE_TYPE_SSID = 0,
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IE_TYPE_SUPPORTED_RATES = 1,
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IE_TYPE_FH_PARAMETER_SET = 2,
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IE_TYPE_DSSS_PARAMETER_SET = 3,
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IE_TYPE_CF_PARAMETER_SET = 4,
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IE_TYPE_TIM = 5,
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IE_TYPE_IBSS_PARAMETER_SET = 6,
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IE_TYPE_COUNTRY = 7,
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IE_TYPE_HOPPING_PATTERN_PARAMETERS = 8,
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IE_TYPE_HOPPING_PATTERN_TABLE = 9,
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IE_TYPE_REQUEST = 10,
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IE_TYPE_BSS_LOAD = 11,
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IE_TYPE_EDCA_PARAMETER_SET = 12,
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IE_TYPE_TSPEC = 13,
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IE_TYPE_TCLAS = 14,
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IE_TYPE_SCHEDULE = 15,
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IE_TYPE_CHALLENGE_TEXT = 16,
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/* Reserved 17 - 31 */
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IE_TYPE_POWER_CONSTRAINT = 32,
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IE_TYPE_POWER_CAPABILITY = 33,
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IE_TYPE_TPC_REQUEST = 34,
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IE_TYPE_TPC_REPORT = 35,
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IE_TYPE_SUPPORTED_CHANNELS = 36,
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IE_TYPE_CHANNEL_SWITCH_ANNOUNCEMENT = 37,
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IE_TYPE_MEASUREMENT_REQUEST = 38,
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IE_TYPE_MEASUREMENT_REPORT = 39,
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IE_TYPE_QUIET = 40,
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IE_TYPE_IBSS_DFS = 41,
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IE_TYPE_ERP = 42,
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IE_TYPE_TS_DELAY = 43,
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IE_TYPE_TCLAS_PROCESSING = 44,
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IE_TYPE_HT_CAPABILITIES = 45,
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IE_TYPE_QOS_CAPABILITY = 46,
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/* Reserved 47 */
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IE_TYPE_RSN = 48,
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/* Reserved 49 */
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IE_TYPE_EXTENDED_SUPPORTED_RATES = 50,
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IE_TYPE_AP_CHANNEL_REPORT = 51,
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IE_TYPE_NEIGHBOR_REPORT = 52,
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IE_TYPE_RCPI = 53,
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IE_TYPE_MOBILITY_DOMAIN = 54,
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IE_TYPE_FAST_BSS_TRANSITION = 55,
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IE_TYPE_TIMEOUT_INTERVAL = 56,
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IE_TYPE_RIC_DATA = 57,
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IE_TYPE_DSE_REGISTERED_LOCATION = 58,
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IE_TYPE_SUPPORTED_OPERATING_CLASSES = 59,
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IE_TYPE_EXTENDED_CHANNEL_SWITCH_ANNOUNCEMENT = 60,
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IE_TYPE_HT_OPERATION = 61,
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IE_TYPE_SECONDARY_CHANNEL_OFFSET = 62,
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IE_TYPE_BSS_AVERAGE_ACCESS_DELAY = 63,
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IE_TYPE_ANTENNA = 64,
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IE_TYPE_RSNI = 65,
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IE_TYPE_MEASUREMENT_PILOT_TRANSMISSION = 66,
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IE_TYPE_BSS_AVAILABLE_ADMISSION_CAPACITY = 67,
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IE_TYPE_BSS_AC_ACCESS_DELAY = 68,
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IE_TYPE_TIME_ADVERTISEMENT = 69,
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IE_TYPE_RM_ENABLED_CAPABILITIES = 70,
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IE_TYPE_MULTIPLE_BSSID = 71,
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IE_TYPE_BSS_COEXISTENCE = 72,
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IE_TYPE_BSS_INTOLERANT_CHANNEL_REPORT = 73,
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IE_TYPE_OVERLAPPING_BSS_SCAN_PARAMETERS = 74,
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IE_TYPE_RIC_DESCRIPTOR = 75,
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IE_TYPE_MANAGEMENT_MIC = 76,
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IE_TYPE_EVENT_REQUEST = 78,
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IE_TYPE_EVENT_REPORT = 79,
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IE_TYPE_DIAGNOSTIC_REQUEST = 80,
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IE_TYPE_DIAGNOSTIC_REPORT = 81,
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IE_TYPE_LOCATION_PARAMETERS = 82,
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IE_TYPE_NONTRANSMITTED_BSSID_CAPABILITY = 83,
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IE_TYPE_SSID_LIST = 84,
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IE_TYPE_MULTIPLE_BSSID_INDEX = 85,
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IE_TYPE_FMS_DESCRIPTOR = 86,
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IE_TYPE_FMS_REQUEST = 87,
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IE_TYPE_FMS_RESPONSE = 88,
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IE_TYPE_QOS_TRAFFIC_CAPABILITY = 89,
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IE_TYPE_BSS_MAX_IDLE_PERIOD = 90,
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IE_TYPE_TFS_REQUEST = 91,
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IE_TYPE_TFS_RESPONSE = 92,
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IE_TYPE_WNM_SLEEP_MODE = 93,
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IE_TYPE_TIM_BROADCAST_REQUEST = 94,
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IE_TYPE_TIM_BROADCAST_RESPONSE = 95,
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IE_TYPE_COLLOCATED_INTERFERENCE_REPORT = 96,
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IE_TYPE_CHANNEL_USAGE = 97,
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IE_TYPE_TIME_ZONE = 98,
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IE_TYPE_DMS_REQUEST = 99,
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IE_TYPE_DMS_RESPONSE = 100,
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IE_TYPE_LINK_IDENTIFIER = 101,
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IE_TYPE_WAKEUP_SCHEDULE = 102,
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IE_TYPE_CHANNEL_SWITCH_TIMING = 104,
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IE_TYPE_PTI_CONTROL = 105,
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IE_TYPE_TPU_BUFFER_STATUS = 106,
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IE_TYPE_INTERWORKING = 107,
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IE_TYPE_ADVERTISEMENT_PROTOCOL = 108,
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IE_TYPE_EXPEDITED_BANDWIDTH_REQUEST = 109,
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IE_TYPE_QOS_MAP_SET = 110,
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IE_TYPE_ROAMING_CONSORTIUM = 111,
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IE_TYPE_EMERGENCY_ALERT_IDENTIFIER = 112,
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IE_TYPE_MESH_CONFIGURATION = 113,
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IE_TYPE_MESH_ID = 114,
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IE_TYPE_MESH_LINK_METRIC_REPORT = 115,
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IE_TYPE_CONGESTION_NOTIFICATION = 116,
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IE_TYPE_MESH_PEERING_MANAGEMENT = 117,
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IE_TYPE_MESH_CHANNEL_SWITCH_PARAMETERS = 118,
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IE_TYPE_MESH_AWAKE_WINDOW = 119,
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IE_TYPE_BEACON_TIMING = 120,
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IE_TYPE_MCCAOP_SETUP_REQUEST = 121,
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IE_TYPE_MCCAOP_SETUP_REPLY = 122,
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IE_TYPE_MCCAOP_ADVERTISEMENT = 123,
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IE_TYPE_MCCAOP_TEARDOWN = 124,
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IE_TYPE_GANN = 125,
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IE_TYPE_RANN = 126,
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IE_TYPE_EXTENDED_CAPABILITIES = 127,
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/* Reserved 128 - 129 */
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IE_TYPE_PREQ = 130,
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IE_TYPE_PREP = 131,
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IE_TYPE_PERR = 132,
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/* Reserved 133 - 136 */
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IE_TYPE_PXU = 137,
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IE_TYPE_PXUC = 138,
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IE_TYPE_AUTHENTICATED_MESH_PEERING_EXCHANGE = 139,
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IE_TYPE_MIC = 140,
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IE_TYPE_DESTINATION_URI = 141,
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IE_TYPE_U_APSD_COEXISTENCE = 142,
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/* Reserved 143 - 173 */
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IE_TYPE_MCCAOP_ADVERTISEMENT_OVERVIEW = 174,
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/* Reserved 175 - 220 */
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IE_TYPE_VENDOR_SPECIFIC = 221,
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/* Reserved 222 - 255 */
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};
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enum ie_rsn_cipher_suite {
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IE_RSN_CIPHER_SUITE_USE_GROUP_CIPHER = 0x0001,
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IE_RSN_CIPHER_SUITE_WEP40 = 0x0002,
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IE_RSN_CIPHER_SUITE_TKIP = 0x0004,
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IE_RSN_CIPHER_SUITE_CCMP = 0x0008,
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IE_RSN_CIPHER_SUITE_WEP104 = 0x0010,
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IE_RSN_CIPHER_SUITE_BIP = 0x0020,
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IE_RSN_CIPHER_SUITE_NO_GROUP_TRAFFIC = 0x0040,
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};
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enum ie_rsn_akm_suite {
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IE_RSN_AKM_SUITE_8021X = 0x0001,
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IE_RSN_AKM_SUITE_PSK = 0x0002,
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IE_RSN_AKM_SUITE_FT_OVER_8021X = 0x0004,
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IE_RSN_AKM_SUITE_FT_USING_PSK = 0x0008,
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IE_RSN_AKM_SUITE_8021X_SHA256 = 0x0010,
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IE_RSN_AKM_SUITE_PSK_SHA256 = 0x0020,
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IE_RSN_AKM_SUITE_TDLS = 0x0040,
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IE_RSN_AKM_SUITE_SAE_SHA256 = 0x0080,
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IE_RSN_AKM_SUITE_FT_OVER_SAE_SHA256 = 0x0100,
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};
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struct ie_tlv_iter {
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unsigned int max;
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unsigned int pos;
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const unsigned char *tlv;
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unsigned int tag;
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unsigned int len;
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const unsigned char *data;
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};
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#define MAX_BUILDER_SIZE (8 * 1024)
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struct ie_tlv_builder {
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unsigned char buf[MAX_BUILDER_SIZE];
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unsigned int max;
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unsigned int pos;
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unsigned char *tlv;
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struct ie_tlv_builder *parent;
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unsigned int tag;
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unsigned int len;
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};
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struct ie_rsn_info {
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enum ie_rsn_cipher_suite group_cipher;
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uint16_t pairwise_ciphers;
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uint16_t akm_suites;
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bool preauthentication:1;
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bool no_pairwise:1;
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uint8_t ptksa_replay_counter:2;
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uint8_t gtksa_replay_counter:2;
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bool mfpr:1;
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bool mfpc:1;
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bool peerkey_enabled:1;
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bool spp_a_msdu_capable:1;
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bool spp_a_msdu_required:1;
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bool pbac:1;
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bool extended_key_id:1;
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uint8_t num_pmkids;
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const uint8_t *pmkids;
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enum ie_rsn_cipher_suite group_management_cipher;
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};
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/* See chapter 8.4.1.4 for capability details */
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enum ie_bss_capability {
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IE_BSS_CAP_ESS = 0x0001,
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IE_BSS_CAP_IBSS = 0x0002,
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IE_BSS_CAP_PRIVACY = 0x0010,
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};
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void ie_tlv_iter_init(struct ie_tlv_iter *iter, const unsigned char *tlv,
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unsigned int len);
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void ie_tlv_iter_recurse(struct ie_tlv_iter *iter,
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struct ie_tlv_iter *recurse);
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static inline unsigned int ie_tlv_iter_get_tag(struct ie_tlv_iter *iter)
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{
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return iter->tag;
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}
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static inline unsigned int ie_tlv_iter_get_length(struct ie_tlv_iter *iter)
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{
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return iter->len;
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}
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static inline const unsigned char *ie_tlv_iter_get_data(
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struct ie_tlv_iter *iter)
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{
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return iter->data;
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}
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uint32_t ie_rsn_cipher_suite_to_cipher(enum ie_rsn_cipher_suite suite);
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bool ie_tlv_iter_next(struct ie_tlv_iter *iter);
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bool ie_tlv_builder_init(struct ie_tlv_builder *builder);
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bool ie_tlv_builder_set_length(struct ie_tlv_builder *builder,
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unsigned int new_len);
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bool ie_tlv_builder_next(struct ie_tlv_builder *builder, unsigned int new_tag);
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unsigned char *ie_tlv_builder_get_data(struct ie_tlv_builder *builder);
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bool ie_tlv_builder_recurse(struct ie_tlv_builder *builder,
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struct ie_tlv_builder *recurse);
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void ie_tlv_builder_finalize(struct ie_tlv_builder *builder,
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unsigned int *out_len);
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int ie_parse_rsne(struct ie_tlv_iter *iter, struct ie_rsn_info *info);
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int ie_parse_rsne_from_data(const uint8_t *data, size_t len,
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struct ie_rsn_info *info);
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bool ie_build_rsne(const struct ie_rsn_info *info, uint8_t *to);
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int ie_parse_wpa(struct ie_tlv_iter *iter, struct ie_rsn_info *out_info);
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int ie_parse_wpa_from_data(const uint8_t *data, size_t len,
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struct ie_rsn_info *info);
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bool is_ie_wpa_ie(const uint8_t *data, uint8_t len);
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bool ie_build_wpa(const struct ie_rsn_info *info, uint8_t *to);
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int ie_parse_bss_load(struct ie_tlv_iter *iter, uint16_t *out_sta_count,
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uint8_t *out_channel_utilization,
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uint16_t *out_admission_capacity);
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int ie_parse_bss_load_from_data(const uint8_t *data, uint8_t len,
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uint16_t *out_sta_count,
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uint8_t *out_channel_utilization,
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uint16_t *out_admission_capacity);
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int ie_parse_supported_rates(struct ie_tlv_iter *iter,
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struct l_uintset **set);
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int ie_parse_supported_rates_from_data(const uint8_t *data, uint8_t len,
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struct l_uintset **set);
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