/* packet-peekremote.c * * Routines for the disassembly of packets sent from Cisco WLAN * Controllers, possibly other Cisco access points, and possibly * other devices such as Aruba access points. See * * http://www.wildpackets.com/elements/omnipeek/OmniPeek_UserGuide.pdf * * which speaks of Aruba access points supporting remote capture and * defaulting to port 5000 for this, and also speaks of Cisco access * points supporting remote capture without any reference to a port * number. The two types of remote capture are described separately; * there's no indication of whether they use the same protocol for * streaming packets but perhaps other protocols for, for example, * discovery and setup, or whether they use different protocols * for streaming packets. * * Apparently Aruba supports several protocols, including Peek remote. * See the packet-aruba-erm dissector. * * Tested with frames captured from a Cisco WCS. * * Copyright 2007 Joerg Mayer (see AUTHORS file) * * Wireshark - Network traffic analyzer * By Gerald Combs * Copyright 1998 Gerald Combs * * 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. * * 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. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ /* * TODO: Decode meta information. * Check on fillup bytes in capture (fcs sometimes wrong) * From: * http://www.cisco.com/univercd/cc/td/doc/product/wireless/pahcont/oweb.pdf * "It will include information on timestamp, signal strength, packet size * and so on" */ #define NEW_PROTO_TREE_API #include "config.h" #include #include #include #define IS_ARUBA 0x01 void proto_register_peekremote(void); void proto_reg_handoff_peekremote(void); static int proto_peekremote; /* * XXX - we don't have all the MCS index values here. * We should probably just show the MCS index as a number (those * numbers are used in 802.11), and have separate items for the * number of spatial streams, the modulation type, and the coding rate. * Note that some modes with more than one spatial stream use *different* * modulation types for the different streams. See section 20.6 * "Parameters for HT MCSs" in 802.11-2012. */ static const value_string peekremote_mcs_index_vals[] = { { 0, "Spatial streams: 1, Modulation type: BPSK, Codingrate: 1/2" }, { 1, "Spatial streams: 1, Modulation type: QPSK, Codingrate: 1/2" }, { 2, "Spatial streams: 1, Modulation type: QPSK, Codingrate: 3/4" }, { 3, "Spatial streams: 1, Modulation type: 16-QAM, Codingrate: 1/2" }, { 4, "Spatial streams: 1, Modulation type: 16-QAM, Codingrate: 3/4" }, { 5, "Spatial streams: 1, Modulation type: 64-QAM, Codingrate: 2/3" }, { 6, "Spatial streams: 1, Modulation type: 64-QAM, Codingrate: 3/4" }, { 7, "Spatial streams: 1, Modulation type: 64-QAM, Codingrate: 5/6" }, { 8, "Spatial streams: 2, Modulation type: BPSK, Codingrate: 1/2" }, { 9, "Spatial streams: 2, Modulation type: QPSK, Codingrate: 1/2" }, { 10, "Spatial streams: 2, Modulation type: QPSK, Codingrate: 3/4" }, { 11, "Spatial streams: 2, Modulation type: 16-QAM, Codingrate: 1/2" }, { 12, "Spatial streams: 2, Modulation type: 16-QAM, Codingrate: 3/4" }, { 13, "Spatial streams: 2, Modulation type: 64-QAM, Codingrate: 2/3" }, { 14, "Spatial streams: 2, Modulation type: 64-QAM, Codingrate: 3/4" }, { 15, "Spatial streams: 2, Modulation type: 64-QAM, Codingrate: 5/6" }, { 16, "Spatial streams: 3, Modulation type: BPSK, Codingrate: 1/2" }, { 17, "Spatial streams: 3, Modulation type: QPSK, Codingrate: 1/2" }, { 18, "Spatial streams: 3, Modulation type: QPSK, Codingrate: 3/4" }, { 19, "Spatial streams: 3, Modulation type: 16-QAM, Codingrate: 1/2" }, { 20, "Spatial streams: 3, Modulation type: 16-QAM, Codingrate: 3/4" }, { 21, "Spatial streams: 3, Modulation type: 64-QAM, Codingrate: 2/3" }, { 22, "Spatial streams: 3, Modulation type: 64-QAM, Codingrate: 3/4" }, { 23, "Spatial streams: 3, Modulation type: 64-QAM, Codingrate: 5/6" }, { 24, "Spatial streams: 4, Modulation type: BPSK, Codingrate: 1/2" }, { 25, "Spatial streams: 4, Modulation type: QPSK, Codingrate: 1/2" }, { 26, "Spatial streams: 4, Modulation type: QPSK, Codingrate: 3/4" }, { 27, "Spatial streams: 4, Modulation type: 16-QAM, Codingrate: 1/2" }, { 28, "Spatial streams: 4, Modulation type: 16-QAM, Codingrate: 3/4" }, { 29, "Spatial streams: 4, Modulation type: 64-QAM, Codingrate: 2/3" }, { 30, "Spatial streams: 4, Modulation type: 64-QAM, Codingrate: 3/4" }, { 31, "Spatial streams: 4, Modulation type: 64-QAM, Codingrate: 5/6" }, { 0, NULL } }; static value_string_ext peekremote_mcs_index_vals_ext = VALUE_STRING_EXT_INIT(peekremote_mcs_index_vals); static const value_string peekremote_type_vals[] = { { 6, "kMediaSpecificHdrType_Wireless3" }, { 0, NULL } }; /* * Extended flags. * * Some determined from bug 10637, some determined from bug 9586, * and the ones present in both agree, so we're assuming that * the "remote Peek" protocol and the "Peek tagged" file format * use the same bits (which wouldn't be too surprising, as they * both come from Wildpackets). */ #define EXT_FLAG_20_MHZ_LOWER 0x00000001 #define EXT_FLAG_20_MHZ_UPPER 0x00000002 #define EXT_FLAG_40_MHZ 0x00000004 #define EXT_FLAGS_BANDWIDTH 0x00000007 #define EXT_FLAG_HALF_GI 0x00000008 #define EXT_FLAG_FULL_GI 0x00000010 #define EXT_FLAGS_GI 0x00000018 #define EXT_FLAG_AMPDU 0x00000020 #define EXT_FLAG_AMSDU 0x00000040 #define EXT_FLAG_802_11ac 0x00000080 #define EXT_FLAG_MCS_INDEX_USED 0x00000100 #define EXT_FLAGS_RESERVED 0xFFFFFE00 /* hfi elements */ #define THIS_HF_INIT HFI_INIT(proto_peekremote) static header_field_info *hfi_peekremote = NULL; /* Common to both headers */ static header_field_info hfi_peekremote_channel THIS_HF_INIT = { "Channel", "peekremote.channel", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }; static header_field_info hfi_peekremote_signal_dbm THIS_HF_INIT = { "Signal [dBm]", "peekremote.signal_dbm", FT_INT8, BASE_DEC, NULL, 0x0, NULL, HFILL }; static header_field_info hfi_peekremote_noise_dbm THIS_HF_INIT = { "Noise [dBm]", "peekremote.noise_dbm", FT_INT8, BASE_DEC, NULL, 0x0, NULL, HFILL }; static header_field_info hfi_peekremote_packetlength THIS_HF_INIT = { "Packet length", "peekremote.packetlength", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }; static header_field_info hfi_peekremote_slicelength THIS_HF_INIT = { "Slice length", "peekremote.slicelength", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }; static header_field_info hfi_peekremote_flags THIS_HF_INIT = { "Flags", "peekremote.flags", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }; static header_field_info hfi_peekremote_flags_control_frame THIS_HF_INIT = { "Is a Control frame", "peekremote.flags.control_frame", FT_BOOLEAN, 8, TFS(&tfs_yes_no), 0x01, NULL, HFILL }; static header_field_info hfi_peekremote_flags_crc_error THIS_HF_INIT = { "Has CRC error", "peekremote.flags.has_crc_error", FT_BOOLEAN, 8, TFS(&tfs_yes_no), 0x02, NULL, HFILL }; static header_field_info hfi_peekremote_flags_frame_error THIS_HF_INIT = { "Has frame error", "peekremote.flags.has_frame_error", FT_BOOLEAN, 8, TFS(&tfs_yes_no), 0x04, NULL, HFILL }; static header_field_info hfi_peekremote_flags_reserved THIS_HF_INIT = { "Reserved", "peekremote.flags.reserved", FT_UINT8, BASE_HEX, NULL, 0xF8, "Must be zero", HFILL }; static header_field_info hfi_peekremote_status THIS_HF_INIT = { "Status", "peekremote.status", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }; static header_field_info hfi_peekremote_status_protected THIS_HF_INIT = { "Protected", "peekremote.status.protected", FT_BOOLEAN, 8, TFS(&tfs_yes_no), 0x04, NULL, HFILL }; static header_field_info hfi_peekremote_status_with_decrypt_error THIS_HF_INIT = { "With decrypt error", "peekremote.status.with_decrypt_error", FT_BOOLEAN, 8, TFS(&tfs_yes_no), 0x08, NULL, HFILL }; static header_field_info hfi_peekremote_status_with_short_preamble THIS_HF_INIT = { "With short preamble", "peekremote.status.with_short_preamble", FT_BOOLEAN, 8, TFS(&tfs_yes_no), 0x40, NULL, HFILL }; static header_field_info hfi_peekremote_status_reserved THIS_HF_INIT = { "Reserved", "peekremote.status.reserved", FT_UINT8, BASE_HEX, NULL, 0xB3, "Must be zero", HFILL }; static header_field_info hfi_peekremote_timestamp THIS_HF_INIT = { "TSF timestamp", "peekremote.timestamp", FT_UINT64, BASE_DEC, NULL, 0x0, NULL, HFILL }; static header_field_info hfi_peekremote_mcs_index THIS_HF_INIT = { "MCS index", "peekremote.mcs_index", FT_UINT16, BASE_DEC|BASE_EXT_STRING, &peekremote_mcs_index_vals_ext, 0x0, NULL, HFILL }; static header_field_info hfi_peekremote_signal_percent THIS_HF_INIT = { "Signal [percent]", "peekremote.signal_percent", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }; static header_field_info hfi_peekremote_noise_percent THIS_HF_INIT = { "Noise [percent]", "peekremote.noise_percent", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }; /* Legacy header only */ static header_field_info hfi_peekremote_speed THIS_HF_INIT = { "Data rate [500kHz]", "peekremote.data_rate", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }; /* New header only */ static header_field_info hfi_peekremote_magic_number THIS_HF_INIT = { "Magic number", "peekremote.magic_number", FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL }; static header_field_info hfi_peekremote_header_version THIS_HF_INIT = { "Header version", "peekremote.header_version", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }; static header_field_info hfi_peekremote_header_size THIS_HF_INIT = { "Header size", "peekremote.header_size", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }; static header_field_info hfi_peekremote_type THIS_HF_INIT = { "Type", "peekremote.type", FT_UINT32, BASE_DEC, VALS(peekremote_type_vals), 0x0, NULL, HFILL }; static header_field_info hfi_peekremote_frequency THIS_HF_INIT = { "Frequency [Mhz]", "peekremote.frequency", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }; static header_field_info hfi_peekremote_band THIS_HF_INIT = { "Band", "peekremote.band", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }; static header_field_info hfi_peekremote_extflags THIS_HF_INIT = { "Extended flags", "peekremote.extflags", FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL }; static header_field_info hfi_peekremote_extflags_20mhz_lower THIS_HF_INIT = { "20 MHz Lower", "peekremote.extflags.20mhz_lower", FT_BOOLEAN, 32, TFS(&tfs_yes_no), EXT_FLAG_20_MHZ_LOWER, NULL, HFILL }; static header_field_info hfi_peekremote_extflags_20mhz_upper THIS_HF_INIT = { "20 MHz Upper", "peekremote.extflags.20mhz_upper", FT_BOOLEAN, 32, TFS(&tfs_yes_no), EXT_FLAG_20_MHZ_UPPER, NULL, HFILL }; static header_field_info hfi_peekremote_extflags_40mhz THIS_HF_INIT = { "40 MHz", "peekremote.extflags.40mhz", FT_BOOLEAN, 32, TFS(&tfs_yes_no), EXT_FLAG_40_MHZ, NULL, HFILL }; static header_field_info hfi_peekremote_extflags_half_gi THIS_HF_INIT = { "Half Guard Interval", "peekremote.extflags.half_gi", FT_BOOLEAN, 32, TFS(&tfs_yes_no), EXT_FLAG_HALF_GI, NULL, HFILL }; static header_field_info hfi_peekremote_extflags_full_gi THIS_HF_INIT = { "Full Guard Interval", "peekremote.extflags.full_gi", FT_BOOLEAN, 32, TFS(&tfs_yes_no), EXT_FLAG_FULL_GI, NULL, HFILL }; static header_field_info hfi_peekremote_extflags_ampdu THIS_HF_INIT = { "AMPDU", "peekremote.extflags.ampdu", FT_BOOLEAN, 32, TFS(&tfs_yes_no), EXT_FLAG_AMPDU, NULL, HFILL }; static header_field_info hfi_peekremote_extflags_amsdu THIS_HF_INIT = { "AMSDU", "peekremote.extflags.amsdu", FT_BOOLEAN, 32, TFS(&tfs_yes_no), EXT_FLAG_AMSDU, NULL, HFILL }; static header_field_info hfi_peekremote_extflags_11ac THIS_HF_INIT = { "802.11ac", "peekremote.extflags.11ac", FT_BOOLEAN, 32, TFS(&tfs_yes_no), EXT_FLAG_802_11ac, NULL, HFILL }; static header_field_info hfi_peekremote_extflags_future_use THIS_HF_INIT = { "MCS index used", "peekremote.extflags.future_use", FT_BOOLEAN, 32, TFS(&tfs_yes_no), EXT_FLAG_MCS_INDEX_USED, NULL, HFILL }; static header_field_info hfi_peekremote_extflags_reserved THIS_HF_INIT = { "Reserved", "peekremote.extflags.reserved", FT_UINT32, BASE_HEX, NULL, EXT_FLAGS_RESERVED, "Must be zero", HFILL }; /* XXX - are the numbers antenna numbers? */ static header_field_info hfi_peekremote_signal_1_dbm THIS_HF_INIT = { "Signal 1 [dBm]", "peekremote.signal_1_dbm", FT_INT8, BASE_DEC, NULL, 0x0, NULL, HFILL }; static header_field_info hfi_peekremote_signal_2_dbm THIS_HF_INIT = { "Signal 2 [dBm]", "peekremote.signal_2_dbm", FT_INT8, BASE_DEC, NULL, 0x0, NULL, HFILL }; static header_field_info hfi_peekremote_signal_3_dbm THIS_HF_INIT = { "Signal 3 [dBm]", "peekremote.signal_3_dbm", FT_INT8, BASE_DEC, NULL, 0x0, NULL, HFILL }; static header_field_info hfi_peekremote_signal_4_dbm THIS_HF_INIT = { "Signal 4 [dBm]", "peekremote.signal_4_dbm", FT_INT8, BASE_DEC, NULL, 0x0, NULL, HFILL }; static header_field_info hfi_peekremote_noise_1_dbm THIS_HF_INIT = { "Noise 1 [dBm]", "peekremote.noise_1_dbm", FT_INT8, BASE_DEC, NULL, 0x0, NULL, HFILL }; static header_field_info hfi_peekremote_noise_2_dbm THIS_HF_INIT = { "Noise 2 [dBm]", "peekremote.noise_2_dbm", FT_INT8, BASE_DEC, NULL, 0x0, NULL, HFILL }; static header_field_info hfi_peekremote_noise_3_dbm THIS_HF_INIT = { "Noise 3 [dBm]", "peekremote.noise_3_dbm", FT_INT8, BASE_DEC, NULL, 0x0, NULL, HFILL }; static header_field_info hfi_peekremote_noise_4_dbm THIS_HF_INIT = { "Noise 4 [dBm]", "peekremote.noise_4_dbm", FT_INT8, BASE_DEC, NULL, 0x0, NULL, HFILL }; static expert_field ei_peekremote_unknown_header_version = EI_INIT; static expert_field ei_peekremote_invalid_header_size = EI_INIT; static gint ett_peekremote = -1; static gint ett_peekremote_flags = -1; static gint ett_peekremote_status = -1; static gint ett_peekremote_extflags = -1; static dissector_handle_t wlan_radio_handle; static int dissect_peekremote_extflags(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, int offset) { proto_tree *extflags_tree; proto_item *ti_extflags; ti_extflags = proto_tree_add_item(tree, &hfi_peekremote_extflags, tvb, offset, 4, ENC_BIG_ENDIAN); extflags_tree = proto_item_add_subtree(ti_extflags, ett_peekremote_extflags); proto_tree_add_item(extflags_tree, &hfi_peekremote_extflags_20mhz_lower, tvb, offset, 4, ENC_BIG_ENDIAN); proto_tree_add_item(extflags_tree, &hfi_peekremote_extflags_20mhz_upper, tvb, offset, 4, ENC_BIG_ENDIAN); proto_tree_add_item(extflags_tree, &hfi_peekremote_extflags_40mhz, tvb, offset, 4, ENC_BIG_ENDIAN); proto_tree_add_item(extflags_tree, &hfi_peekremote_extflags_half_gi, tvb, offset, 4, ENC_BIG_ENDIAN); proto_tree_add_item(extflags_tree, &hfi_peekremote_extflags_full_gi, tvb, offset, 4, ENC_BIG_ENDIAN); proto_tree_add_item(extflags_tree, &hfi_peekremote_extflags_ampdu, tvb, offset, 4, ENC_BIG_ENDIAN); proto_tree_add_item(extflags_tree, &hfi_peekremote_extflags_amsdu, tvb, offset, 4, ENC_BIG_ENDIAN); proto_tree_add_item(extflags_tree, &hfi_peekremote_extflags_11ac, tvb, offset, 4, ENC_BIG_ENDIAN); proto_tree_add_item(extflags_tree, &hfi_peekremote_extflags_future_use, tvb, offset, 4, ENC_BIG_ENDIAN); proto_tree_add_item(extflags_tree, &hfi_peekremote_extflags_reserved, tvb, offset, 4, ENC_BIG_ENDIAN); return 4; } static int dissect_peekremote_flags(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, int offset) { proto_tree *flags_tree; proto_item *ti_flags; ti_flags = proto_tree_add_item(tree, &hfi_peekremote_flags, tvb, offset, 1, ENC_NA); flags_tree = proto_item_add_subtree(ti_flags, ett_peekremote_flags); proto_tree_add_item(flags_tree, &hfi_peekremote_flags_control_frame, tvb, offset, 1, ENC_NA); proto_tree_add_item(flags_tree, &hfi_peekremote_flags_crc_error, tvb, offset, 1, ENC_NA); proto_tree_add_item(flags_tree, &hfi_peekremote_flags_frame_error, tvb, offset, 1, ENC_NA); proto_tree_add_item(flags_tree, &hfi_peekremote_flags_reserved, tvb, offset, 1, ENC_NA); return 1; } static int dissect_peekremote_status(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, int offset) { proto_tree *status_tree; proto_item *ti_status; ti_status = proto_tree_add_item(tree, &hfi_peekremote_status, tvb, offset, 1, ENC_NA); status_tree = proto_item_add_subtree(ti_status, ett_peekremote_status); proto_tree_add_item(status_tree, &hfi_peekremote_status_protected, tvb, offset, 1, ENC_NA); proto_tree_add_item(status_tree, &hfi_peekremote_status_with_decrypt_error, tvb, offset, 1, ENC_NA); proto_tree_add_item(status_tree, &hfi_peekremote_status_with_short_preamble, tvb, offset, 1, ENC_NA); proto_tree_add_item(status_tree, &hfi_peekremote_status_reserved, tvb, offset, 1, ENC_NA); return 1; } static gboolean dissect_peekremote_new(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *u _U_) { static const guint8 magic[4] = { 0x00, 0xFF, 0xAB, 0xCD }; int offset = 0; proto_tree *peekremote_tree = NULL; proto_item *ti = NULL; proto_item *ti_header_version, *ti_header_size; guint8 header_version; guint header_size; struct ieee_802_11_phdr phdr; guint32 extflags; guint16 frequency; guint16 mcs_index; tvbuff_t *next_tvb; if (tvb_memeql(tvb, 0, magic, 4) == -1) { /* * Not big enough to hold the magic number, or doesn't start * with the magic number. */ return FALSE; } /* We don't have any 802.11 metadata yet. */ phdr.fcs_len = 4; /* has an FCS */ phdr.decrypted = FALSE; phdr.datapad = FALSE; phdr.phy = PHDR_802_11_PHY_UNKNOWN; phdr.presence_flags = 0; col_set_str(pinfo->cinfo, COL_PROTOCOL, "PEEKREMOTE"); col_clear(pinfo->cinfo, COL_INFO); ti = proto_tree_add_item(tree, hfi_peekremote, tvb, 0, -1, ENC_NA); peekremote_tree = proto_item_add_subtree(ti, ett_peekremote); proto_tree_add_item(peekremote_tree, &hfi_peekremote_magic_number, tvb, offset, 4, ENC_BIG_ENDIAN); offset += 4; header_version = tvb_get_guint8(tvb, offset); ti_header_version = proto_tree_add_uint(peekremote_tree, &hfi_peekremote_header_version, tvb, offset, 1, header_version); offset += 1; header_size = tvb_get_ntohl(tvb, offset); ti_header_size = proto_tree_add_uint(peekremote_tree, &hfi_peekremote_header_size, tvb, offset, 4, header_size); offset += 4; switch (header_version) { case 2: if (header_size != 55) { expert_add_info(pinfo, ti_header_size, &ei_peekremote_invalid_header_size); if (header_size > 9) offset += (header_size - 9); } else { phdr.presence_flags |= PHDR_802_11_HAS_CHANNEL| PHDR_802_11_HAS_SIGNAL_PERCENT| PHDR_802_11_HAS_NOISE_PERCENT| PHDR_802_11_HAS_SIGNAL_DBM| PHDR_802_11_HAS_NOISE_DBM| PHDR_802_11_HAS_TSF_TIMESTAMP; proto_tree_add_item(peekremote_tree, &hfi_peekremote_type, tvb, offset, 4, ENC_BIG_ENDIAN); offset += 4; mcs_index = tvb_get_ntohs(tvb, offset); proto_tree_add_item(peekremote_tree, &hfi_peekremote_mcs_index, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2; phdr.channel = tvb_get_ntohs(tvb, offset); proto_tree_add_item(peekremote_tree, &hfi_peekremote_channel, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2; frequency = tvb_get_ntohl(tvb, offset); if (frequency != 0) { phdr.presence_flags |= PHDR_802_11_HAS_FREQUENCY; phdr.frequency = frequency; } proto_tree_add_item(peekremote_tree, &hfi_peekremote_frequency, tvb, offset, 4, ENC_BIG_ENDIAN); offset += 4; proto_tree_add_item(peekremote_tree, &hfi_peekremote_band, tvb, offset, 4, ENC_BIG_ENDIAN); offset +=4; extflags = tvb_get_ntohl(tvb, offset); if (extflags & EXT_FLAG_802_11ac) { guint i; phdr.phy = PHDR_802_11_PHY_11AC; phdr.phy_info.info_11ac.presence_flags = 0; /* * XXX - this probably has only one user, so only one MCS index * and only one NSS, but where's the NSS? */ for (i = 0; i < 4; i++) { phdr.phy_info.info_11ac.nss[i] = 0; } } else { phdr.phy = PHDR_802_11_PHY_11N; phdr.phy_info.info_11n.presence_flags = PHDR_802_11N_HAS_MCS_INDEX; phdr.phy_info.info_11n.mcs_index = mcs_index; } offset += dissect_peekremote_extflags(tvb, pinfo, peekremote_tree, offset); phdr.signal_percent = tvb_get_guint8(tvb, offset); proto_tree_add_item(peekremote_tree, &hfi_peekremote_signal_percent, tvb, offset, 1, ENC_NA); offset += 1; phdr.noise_percent = tvb_get_guint8(tvb, offset); proto_tree_add_item(peekremote_tree, &hfi_peekremote_noise_percent, tvb, offset, 1, ENC_NA); offset += 1; phdr.signal_dbm = tvb_get_guint8(tvb, offset); proto_tree_add_item(peekremote_tree, &hfi_peekremote_signal_dbm, tvb, offset, 1, ENC_NA); offset += 1; phdr.noise_dbm = tvb_get_guint8(tvb, offset); proto_tree_add_item(peekremote_tree, &hfi_peekremote_noise_dbm, tvb, offset, 1, ENC_NA); offset += 1; proto_tree_add_item(peekremote_tree, &hfi_peekremote_signal_1_dbm, tvb, offset, 1, ENC_NA); offset += 1; proto_tree_add_item(peekremote_tree, &hfi_peekremote_signal_2_dbm, tvb, offset, 1, ENC_NA); offset += 1; proto_tree_add_item(peekremote_tree, &hfi_peekremote_signal_3_dbm, tvb, offset, 1, ENC_NA); offset += 1; proto_tree_add_item(peekremote_tree, &hfi_peekremote_signal_4_dbm, tvb, offset, 1, ENC_NA); offset += 1; proto_tree_add_item(peekremote_tree, &hfi_peekremote_noise_1_dbm, tvb, offset, 1, ENC_NA); offset += 1; proto_tree_add_item(peekremote_tree, &hfi_peekremote_noise_2_dbm, tvb, offset, 1, ENC_NA); offset += 1; proto_tree_add_item(peekremote_tree, &hfi_peekremote_noise_3_dbm, tvb, offset, 1, ENC_NA); offset += 1; proto_tree_add_item(peekremote_tree, &hfi_peekremote_noise_4_dbm, tvb, offset, 1, ENC_NA); offset += 1; proto_tree_add_item(peekremote_tree, &hfi_peekremote_packetlength, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2; proto_tree_add_item(peekremote_tree, &hfi_peekremote_slicelength, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2; offset += dissect_peekremote_flags(tvb, pinfo, peekremote_tree, offset); offset += dissect_peekremote_status(tvb, pinfo, peekremote_tree, offset); proto_tree_add_item(peekremote_tree, &hfi_peekremote_timestamp, tvb, offset, 8, ENC_BIG_ENDIAN); phdr.tsf_timestamp = tvb_get_ntoh64(tvb, offset); offset += 8; } break; default: expert_add_info(pinfo, ti_header_version, &ei_peekremote_unknown_header_version); if (header_size > 9) offset += (header_size - 9); break; } proto_item_set_end(ti, tvb, offset); next_tvb = tvb_new_subset_remaining(tvb, offset); call_dissector_with_data(wlan_radio_handle, next_tvb, pinfo, tree, &phdr); return TRUE; } static int dissect_peekremote_legacy(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data) { tvbuff_t *next_tvb; proto_tree *peekremote_tree = NULL; proto_item *ti = NULL; struct ieee_802_11_phdr phdr; guint8 signal_percent; /* * Check whether this is peekremote-ng, and dissect it as such if it * is. */ if (dissect_peekremote_new(tvb, pinfo, tree, data)) { /* Yup, it was peekremote-ng, and it's been dissected as such. */ return tvb_reported_length(tvb); } col_set_str(pinfo->cinfo, COL_PROTOCOL, "PEEKREMOTE"); col_clear(pinfo->cinfo, COL_INFO); if (tree) { ti = proto_tree_add_item(tree, hfi_peekremote, tvb, 0, -1, ENC_NA); peekremote_tree = proto_item_add_subtree(ti, ett_peekremote); proto_tree_add_item(peekremote_tree, &hfi_peekremote_signal_dbm, tvb, 0, 1, ENC_NA); proto_tree_add_item(peekremote_tree, &hfi_peekremote_noise_dbm, tvb, 1, 1, ENC_NA); proto_tree_add_item(peekremote_tree, &hfi_peekremote_packetlength, tvb, 2, 2, ENC_BIG_ENDIAN); proto_tree_add_item(peekremote_tree, &hfi_peekremote_slicelength, tvb, 4, 2, ENC_BIG_ENDIAN); dissect_peekremote_flags(tvb, pinfo, peekremote_tree, 6); dissect_peekremote_status(tvb, pinfo, peekremote_tree, 7); proto_tree_add_item(peekremote_tree, &hfi_peekremote_timestamp, tvb, 8, 8, ENC_BIG_ENDIAN); proto_tree_add_item(peekremote_tree, &hfi_peekremote_speed, tvb, 16, 1, ENC_NA); proto_tree_add_item(peekremote_tree, &hfi_peekremote_channel, tvb, 17, 1, ENC_BIG_ENDIAN); proto_tree_add_item(peekremote_tree, &hfi_peekremote_signal_percent, tvb, 18, 1, ENC_NA); proto_tree_add_item(peekremote_tree, &hfi_peekremote_noise_percent, tvb, 19, 1, ENC_NA); } signal_percent = tvb_get_guint8(tvb, 18); proto_item_set_end(ti, tvb, 20); next_tvb = tvb_new_subset_remaining(tvb, 20); /* When signal = 100 % and coming from ARUBA ERM, it is TX packet and there is no FCS */ if (GPOINTER_TO_INT(data) == IS_ARUBA && signal_percent == 100) { phdr.fcs_len = 0; /* TX packet, no FCS */ } else { phdr.fcs_len = 4; /* We have an FCS */ } phdr.decrypted = FALSE; phdr.phy = PHDR_802_11_PHY_UNKNOWN; phdr.presence_flags = PHDR_802_11_HAS_CHANNEL| PHDR_802_11_HAS_DATA_RATE| PHDR_802_11_HAS_SIGNAL_PERCENT| PHDR_802_11_HAS_NOISE_PERCENT| PHDR_802_11_HAS_SIGNAL_DBM| PHDR_802_11_HAS_NOISE_DBM| PHDR_802_11_HAS_TSF_TIMESTAMP; phdr.channel = tvb_get_guint8(tvb, 17); phdr.data_rate = tvb_get_guint8(tvb, 16); phdr.signal_percent = tvb_get_guint8(tvb, 18); phdr.noise_percent = tvb_get_guint8(tvb, 18); phdr.signal_dbm = tvb_get_guint8(tvb, 0); phdr.noise_dbm = tvb_get_guint8(tvb, 1); phdr.tsf_timestamp = tvb_get_ntoh64(tvb, 8); return 20 + call_dissector_with_data(wlan_radio_handle, next_tvb, pinfo, tree, &phdr); } void proto_register_peekremote(void) { #ifndef HAVE_HFI_SECTION_INIT static header_field_info *hfi[] = { &hfi_peekremote_signal_dbm, &hfi_peekremote_noise_dbm, &hfi_peekremote_packetlength, &hfi_peekremote_slicelength, &hfi_peekremote_flags, &hfi_peekremote_flags_control_frame, &hfi_peekremote_flags_crc_error, &hfi_peekremote_flags_frame_error, &hfi_peekremote_flags_reserved, &hfi_peekremote_status, &hfi_peekremote_status_protected, &hfi_peekremote_status_with_decrypt_error, &hfi_peekremote_status_with_short_preamble, &hfi_peekremote_status_reserved, &hfi_peekremote_timestamp, &hfi_peekremote_speed, &hfi_peekremote_channel, &hfi_peekremote_magic_number, &hfi_peekremote_header_version, &hfi_peekremote_header_size, &hfi_peekremote_type, &hfi_peekremote_mcs_index, &hfi_peekremote_signal_percent, &hfi_peekremote_noise_percent, &hfi_peekremote_frequency, &hfi_peekremote_band, &hfi_peekremote_extflags, &hfi_peekremote_extflags_20mhz_lower, &hfi_peekremote_extflags_20mhz_upper, &hfi_peekremote_extflags_40mhz, &hfi_peekremote_extflags_half_gi, &hfi_peekremote_extflags_full_gi, &hfi_peekremote_extflags_ampdu, &hfi_peekremote_extflags_amsdu, &hfi_peekremote_extflags_11ac, &hfi_peekremote_extflags_future_use, &hfi_peekremote_extflags_reserved, &hfi_peekremote_signal_1_dbm, &hfi_peekremote_signal_2_dbm, &hfi_peekremote_signal_3_dbm, &hfi_peekremote_signal_4_dbm, &hfi_peekremote_noise_1_dbm, &hfi_peekremote_noise_2_dbm, &hfi_peekremote_noise_3_dbm, &hfi_peekremote_noise_4_dbm, }; #endif static gint *ett[] = { &ett_peekremote, &ett_peekremote_flags, &ett_peekremote_status, &ett_peekremote_extflags }; static ei_register_info ei[] = { { &ei_peekremote_unknown_header_version, { "peekremote.unknown_header_version", PI_UNDECODED, PI_ERROR, "Unknown header version", EXPFILL }}, { &ei_peekremote_invalid_header_size, { "peekremote.invalid_header_size", PI_UNDECODED, PI_ERROR, "Invalid header size for that header version", EXPFILL }}, }; expert_module_t *expert_peekremote; proto_peekremote = proto_register_protocol( "AiroPeek/OmniPeek encapsulated IEEE 802.11", "PEEKREMOTE", "peekremote"); hfi_peekremote = proto_registrar_get_nth(proto_peekremote); proto_register_fields(proto_peekremote, hfi, array_length(hfi)); proto_register_subtree_array(ett, array_length(ett)); expert_peekremote = expert_register_protocol(proto_peekremote); expert_register_field_array(expert_peekremote, ei, array_length(ei)); register_dissector("peekremote", dissect_peekremote_legacy, proto_peekremote); } void proto_reg_handoff_peekremote(void) { dissector_handle_t peekremote_handle; wlan_radio_handle = find_dissector("wlan_radio"); peekremote_handle = create_dissector_handle(dissect_peekremote_legacy, proto_peekremote); dissector_add_uint("udp.port", 5000, peekremote_handle); heur_dissector_add("udp", dissect_peekremote_new, "OmniPeek Remote over UDP", "peekremote_udp", proto_peekremote, HEURISTIC_ENABLE); } /* * Editor modelines - http://www.wireshark.org/tools/modelines.html * * Local variables: * c-basic-offset: 2 * tab-width: 8 * indent-tabs-mode: nil * End: * * vi: set shiftwidth=2 tabstop=8 expandtab: * :indentSize=2:tabSize=8:noTabs=true: */