![Bill Meier](/assets/img/avatar_default.png)
For: - FT_BYTES: Always use just ENC_NA - integral/floating (other than FT_[U]INT8): Do ENC_NA --> ENC_BIG_ENDIAN Also: - FT_UINT... --> FT_UINT8 in a few cases (to match proto_tree_add_item...) - Change one case of incorrect '||' to '|' Change-Id: I427e0e61618ff8faf55691c8a695930f67d455b0 Reviewed-on: https://code.wireshark.org/review/4184 Reviewed-by: Bill Meier <wmeier@newsguy.com>
499 lines
16 KiB
C
499 lines
16 KiB
C
/* packet-iapp.c
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* Routines for IAPP dissection
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* Copyright 2002, Alfred Arnold <aarnold@elsa.de>
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "config.h"
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#include <epan/packet.h>
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#include <epan/expert.h>
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#include <epan/to_str.h>
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#include <epan/oui.h>
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void proto_register_iapp(void);
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void proto_reg_handoff_iapp(void);
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/* Initialize the protocol and registered fields */
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static int proto_iapp = -1;
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static int hf_iapp_version = -1;
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static int hf_iapp_type = -1;
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static int hf_iapp_cap_forwarding = -1;
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static int hf_iapp_cap_wep = -1;
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static int hf_iapp_auth_status = -1;
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static int hf_iapp_auth_string = -1;
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static int hf_iapp_auth_uint = -1;
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static int hf_iapp_auth_ipaddr = -1;
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static int hf_iapp_auth_trailer = -1;
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static int hf_iapp_pdu_ssid = -1;
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static int hf_iapp_pdu_bytes = -1;
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static int hf_iapp_pdu_uint = -1;
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static int hf_iapp_pdu_phytype = -1;
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static int hf_iapp_pdu_regdomain = -1;
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static int hf_iapp_pdu_oui_ident = -1;
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/* Initialize the subtree pointers */
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static gint ett_iapp = -1;
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static gint ett_iapp_pdu = -1;
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static gint ett_iapp_subpdu = -1;
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static gint ett_iapp_cap = -1;
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static gint ett_iapp_auth = -1;
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static gint ett_iapp_authinfo = -1;
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static expert_field ei_iapp_no_pdus = EI_INIT;
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#define UDP_PORT_IAPP 2313
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#define IAPP_ANNOUNCE_REQUEST 0
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#define IAPP_ANNOUNCE_RESPONSE 1
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#define IAPP_HANDOVER_REQUEST 2
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#define IAPP_HANDOVER_RESPONSE 3
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#define IAPP_PDU_SSID 0
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#define IAPP_PDU_BSSID 1
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#define IAPP_PDU_OLDBSSID 2
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#define IAPP_PDU_MSADDR 3
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#define IAPP_PDU_CAPABILITY 4
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#define IAPP_PDU_ANNOUNCEINT 5
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#define IAPP_PDU_HOTIMEOUT 6
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#define IAPP_PDU_MESSAGEID 7
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#define IAPP_PDU_PHYTYPE 0x10
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#define IAPP_PDU_REGDOMAIN 0x11
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#define IAPP_PDU_CHANNEL 0x12
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#define IAPP_PDU_BEACONINT 0x13
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#define IAPP_PDU_OUIIDENT 0x80
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#define IAPP_PDU_AUTHINFO 0x81
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#define IAPP_CAP_FORWARDING 0x40
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#define IAPP_CAP_WEP 0x20
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#define IAPP_PHY_PROP 0x00
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#define IAPP_PHY_FHSS 0x01
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#define IAPP_PHY_DSSS 0x02
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#define IAPP_PHY_IR 0x03
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#define IAPP_PHY_OFDM 0x04
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#define IAPP_DOM_FCC 0x10
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#define IAPP_DOM_IC 0x20
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#define IAPP_DOM_ETSI 0x30
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#define IAPP_DOM_SPAIN 0x31
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#define IAPP_DOM_FRANCE 0x32
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#define IAPP_DOM_MKK 0x40
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#define IAPP_AUTH_STATUS 0x01
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#define IAPP_AUTH_USERNAME 0x02
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#define IAPP_AUTH_PROVNAME 0x03
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#define IAPP_AUTH_RXPKTS 0x04
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#define IAPP_AUTH_TXPKTS 0x05
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#define IAPP_AUTH_RXBYTES 0x06
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#define IAPP_AUTH_TXBYTES 0x07
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#define IAPP_AUTH_LOGINTIME 0x08
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#define IAPP_AUTH_TIMELIMIT 0x09
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#define IAPP_AUTH_VOLLIMIT 0x0a
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#define IAPP_AUTH_ACCCYCLE 0x0b
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#define IAPP_AUTH_RXGWORDS 0x0c
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#define IAPP_AUTH_TXGWORDS 0x0d
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#define IAPP_AUTH_IPADDR 0x0e
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#define IAPP_AUTH_TRAILER 0xff
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static const value_string iapp_vals[] = {
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{IAPP_ANNOUNCE_REQUEST, "Announce Request"},
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{IAPP_ANNOUNCE_RESPONSE, "Announce Response"},
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{IAPP_HANDOVER_REQUEST, "Handover Request"},
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{IAPP_HANDOVER_RESPONSE, "Handover Response"},
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{0, NULL}
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};
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static const value_string iapp_pdu_type_vals[] = {
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{IAPP_PDU_SSID, "Network Name"},
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{IAPP_PDU_BSSID, "BSSID"},
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{IAPP_PDU_OLDBSSID, "Old BSSID"},
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{IAPP_PDU_MSADDR, "Mobile Station Address"},
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{IAPP_PDU_CAPABILITY, "Capabilities"},
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{IAPP_PDU_ANNOUNCEINT, "Announce Interval"},
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{IAPP_PDU_HOTIMEOUT, "Handover Timeout"},
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{IAPP_PDU_MESSAGEID, "Message ID"},
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{IAPP_PDU_PHYTYPE, "PHY Type"},
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{IAPP_PDU_REGDOMAIN, "Regulatory Domain"},
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{IAPP_PDU_CHANNEL, "Radio Channel"},
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{IAPP_PDU_BEACONINT, "Beacon Interval"},
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{IAPP_PDU_OUIIDENT, "OUI Identifier"},
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{IAPP_PDU_AUTHINFO, "ELSA Authentication Info"},
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{0, NULL}
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};
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static const value_string iapp_phy_vals[] = {
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{IAPP_PHY_PROP, "Proprietary"},
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{IAPP_PHY_FHSS, "FHSS"},
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{IAPP_PHY_DSSS, "DSSS"},
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{IAPP_PHY_IR, "Infrared"},
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{IAPP_PHY_OFDM, "OFDM"},
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{0, NULL}
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};
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static const value_string iapp_dom_vals[] = {
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{IAPP_DOM_FCC, "FCC (USA)"},
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{IAPP_DOM_IC, "IC (Canada)"},
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{IAPP_DOM_ETSI, "ETSI (Europe)"},
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{IAPP_DOM_SPAIN, "Spain"},
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{IAPP_DOM_FRANCE, "France"},
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{IAPP_DOM_MKK, "MKK (Japan)"},
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{0, NULL}
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};
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static const value_string iapp_auth_type_vals[] = {
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{IAPP_AUTH_STATUS, "Status"},
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{IAPP_AUTH_USERNAME, "User Name"},
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{IAPP_AUTH_PROVNAME, "Provider Name"},
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{IAPP_AUTH_RXPKTS, "Received Packets"},
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{IAPP_AUTH_TXPKTS, "Transmitted Packets"},
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{IAPP_AUTH_RXBYTES, "Received Octets"},
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{IAPP_AUTH_TXBYTES, "Transmitted Octets"},
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{IAPP_AUTH_LOGINTIME, "Session Time"},
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{IAPP_AUTH_TIMELIMIT, "Time Limit"},
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{IAPP_AUTH_VOLLIMIT, "Volume Limit"},
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{IAPP_AUTH_ACCCYCLE, "Accounting Cycle"},
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{IAPP_AUTH_TRAILER, "Authenticator"},
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{IAPP_AUTH_RXGWORDS, "Received Gigawords"},
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{IAPP_AUTH_TXGWORDS, "Transmitted Gigawords"},
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{IAPP_AUTH_IPADDR, "Client IP Address"},
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{0, NULL}
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};
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/* dissect a capability bit field */
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static void dissect_caps(proto_tree *tree, tvbuff_t *tvb, int offset)
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{
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proto_tree *captree;
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captree = proto_tree_add_subtree(tree, tvb, offset, 1, ett_iapp_cap, NULL, "Capabilities");
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proto_tree_add_item(captree, hf_iapp_cap_forwarding, tvb, offset, 1, ENC_NA);
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proto_tree_add_item(captree, hf_iapp_cap_wep, tvb, offset, 1, ENC_NA);
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}
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static void
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add_authval_str(proto_tree *tree, int type, int len, tvbuff_t *tvb, int offset)
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{
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int val;
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switch (type)
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{
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case IAPP_AUTH_STATUS:
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val = tvb_get_guint8(tvb, offset);
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proto_tree_add_uint_format_value(tree, hf_iapp_auth_status, tvb, offset, 1, val, "%s", val ? "Authenticated" : "Not authenticated");
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break;
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case IAPP_AUTH_USERNAME:
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case IAPP_AUTH_PROVNAME:
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proto_tree_add_item(tree, hf_iapp_auth_string, tvb, offset, 1, ENC_ASCII|ENC_NA);
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break;
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case IAPP_AUTH_RXPKTS:
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case IAPP_AUTH_TXPKTS:
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case IAPP_AUTH_RXBYTES:
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case IAPP_AUTH_TXBYTES:
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case IAPP_AUTH_RXGWORDS:
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case IAPP_AUTH_TXGWORDS:
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case IAPP_AUTH_VOLLIMIT:
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proto_tree_add_item(tree, hf_iapp_auth_uint, tvb, offset, 4, ENC_BIG_ENDIAN);
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break;
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case IAPP_AUTH_LOGINTIME:
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case IAPP_AUTH_TIMELIMIT:
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case IAPP_AUTH_ACCCYCLE:
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val = tvb_get_ntohl(tvb, offset);
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proto_tree_add_uint_format_value(tree, hf_iapp_auth_uint, tvb, offset, 4, val, "%d seconds", val);
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break;
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case IAPP_AUTH_IPADDR:
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proto_tree_add_item(tree, hf_iapp_auth_ipaddr, tvb, offset, 4, ENC_BIG_ENDIAN);
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break;
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case IAPP_AUTH_TRAILER:
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proto_tree_add_item(tree, hf_iapp_auth_trailer, tvb, offset, len, ENC_NA);
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break;
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}
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}
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/* dissect authentication info */
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static void dissect_authinfo(proto_item *pitem, tvbuff_t *tvb, int offset, int sumlen)
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{
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proto_tree *authtree, *value_tree;
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guint8 pdu_type;
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guint16 len;
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authtree = proto_item_add_subtree(pitem, ett_iapp_auth);
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while (sumlen > 0)
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{
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pdu_type = tvb_get_guint8(tvb, offset);
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len = tvb_get_ntohs(tvb, offset+1);
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value_tree = proto_tree_add_subtree_format(authtree, tvb, offset, len + 3,
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ett_iapp_authinfo, NULL, "%s (%d)",
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val_to_str_const(pdu_type, iapp_auth_type_vals, "Unknown PDU Type"),
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pdu_type);
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add_authval_str(value_tree, pdu_type, len, tvb, offset+3);
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sumlen -= (len + 3);
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offset += (len + 3);
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}
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}
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/* get displayable values of PDU contents */
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static gboolean
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append_pduval_str(proto_tree *tree, int type, int len, tvbuff_t *tvb, int offset,
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gboolean is_fhss)
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{
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int val;
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switch (type)
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{
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case IAPP_PDU_SSID:
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proto_tree_add_item(tree, hf_iapp_pdu_ssid, tvb, offset, len, ENC_ASCII|ENC_NA);
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break;
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case IAPP_PDU_BSSID:
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case IAPP_PDU_OLDBSSID:
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case IAPP_PDU_MSADDR:
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proto_tree_add_item(tree, hf_iapp_pdu_bytes, tvb, offset, len, ENC_NA);
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break;
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case IAPP_PDU_CAPABILITY:
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dissect_caps(tree, tvb, offset);
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break;
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case IAPP_PDU_ANNOUNCEINT:
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val = tvb_get_ntohs(tvb, offset);
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proto_tree_add_uint_format_value(tree, hf_iapp_pdu_uint, tvb, offset, 2, val, "%d seconds", val);
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break;
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case IAPP_PDU_HOTIMEOUT:
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case IAPP_PDU_BEACONINT:
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val = tvb_get_ntohs(tvb, offset);
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proto_tree_add_uint_format_value(tree, hf_iapp_pdu_uint, tvb, offset, 2, val, "%d Kus", val);
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break;
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case IAPP_PDU_MESSAGEID:
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proto_tree_add_item(tree, hf_iapp_pdu_uint, tvb, offset, 2, ENC_BIG_ENDIAN);
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break;
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case IAPP_PDU_PHYTYPE:
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proto_tree_add_item(tree, hf_iapp_pdu_phytype, tvb, offset, 1, ENC_BIG_ENDIAN);
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is_fhss = (tvb_get_guint8(tvb, offset) == IAPP_PHY_FHSS);
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break;
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case IAPP_PDU_REGDOMAIN:
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proto_tree_add_item(tree, hf_iapp_pdu_regdomain, tvb, offset, 1, ENC_BIG_ENDIAN);
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break;
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case IAPP_PDU_CHANNEL:
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if (is_fhss)
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{
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val = tvb_get_guint8(tvb, offset);
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proto_tree_add_uint_format(tree, hf_iapp_pdu_uint, tvb, offset, 1, val,
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"Pattern set %d, sequence %d", ((val >> 6) & 3) + 1, (val & 31) + 1);
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}
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else
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proto_tree_add_item(tree, hf_iapp_pdu_uint, tvb, offset, 1, ENC_BIG_ENDIAN);
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break;
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case IAPP_PDU_OUIIDENT:
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proto_tree_add_item(tree, hf_iapp_pdu_oui_ident, tvb, offset, 3, ENC_BIG_ENDIAN);
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break;
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}
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return is_fhss;
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}
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/* code to dissect a list of PDUs */
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static void
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dissect_pdus(tvbuff_t *tvb, packet_info *pinfo, int offset, proto_tree *pdutree, proto_item *pduitem, int pdulen)
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{
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guint8 pdu_type;
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guint16 len;
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proto_item *ti;
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gboolean is_fhss;
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proto_tree *subtree;
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if (!pdulen)
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{
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expert_add_info(pinfo, pduitem, &ei_iapp_no_pdus);
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return;
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}
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is_fhss = FALSE;
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while (pdulen > 0)
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{
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pdu_type = tvb_get_guint8(tvb, offset);
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len = tvb_get_ntohs(tvb, offset+1);
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subtree = proto_tree_add_subtree_format(pdutree, tvb, offset, len + 3,
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ett_iapp_subpdu, &ti, "%s (%d)",
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val_to_str_const(pdu_type, iapp_pdu_type_vals, "Unknown PDU Type"),
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pdu_type);
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is_fhss = append_pduval_str(subtree, pdu_type, len, tvb,
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offset+3, is_fhss);
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if (pdu_type == IAPP_PDU_AUTHINFO)
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dissect_authinfo(ti, tvb, offset + 3, len);
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pdulen -= (len + 3);
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offset += (len + 3);
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}
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}
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/* code to dissect an IAPP packet */
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static void
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dissect_iapp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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{
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proto_item *ti, *pduitem;
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proto_tree *iapp_tree, *pdutree;
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guint8 ia_version;
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guint8 ia_type;
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const gchar *codestrval;
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "IAPP");
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col_clear(pinfo->cinfo, COL_INFO);
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ia_version = tvb_get_guint8(tvb, 0);
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ia_type = tvb_get_guint8(tvb, 1);
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codestrval = val_to_str_const(ia_type, iapp_vals, "Unknown Packet");
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col_add_fstr(pinfo->cinfo, COL_INFO, "%s(%d) (version=%d)", codestrval, ia_type, ia_version);
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if (tree)
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{
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ti = proto_tree_add_item(tree, proto_iapp, tvb, 0, -1, ENC_NA);
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iapp_tree = proto_item_add_subtree(ti, ett_iapp);
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/* common header for all IAPP frames */
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proto_tree_add_item(iapp_tree, hf_iapp_version, tvb, 0, 1, ENC_NA);
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proto_tree_add_item(iapp_tree, hf_iapp_type, tvb, 1, 1, ENC_NA);
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pdutree = proto_tree_add_subtree(iapp_tree, tvb, 2, -1,
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ett_iapp_pdu, &pduitem, "Protocol data units");
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dissect_pdus(tvb, pinfo, 2, pdutree, pduitem,
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tvb_length_remaining(tvb, 2));
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}
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}
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/* Register the protocol with Wireshark */
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/* this format is require because a script is used to build the C function
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that calls all the protocol registration.
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*/
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void
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proto_register_iapp(void)
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{
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static hf_register_info hf[] = {
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{ &hf_iapp_version,
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{ "Version", "iapp.version", FT_UINT8, BASE_DEC, NULL, 0x00, NULL, HFILL }
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},
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{ &hf_iapp_type,
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{ "Type", "iapp.type", FT_UINT8, BASE_DEC, VALS(iapp_vals), 0x00, NULL, HFILL }
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},
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{ &hf_iapp_cap_forwarding,
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{ "Forwarding", "iapp.cap.forwarding", FT_BOOLEAN, 8, TFS(&tfs_yes_no), IAPP_CAP_FORWARDING, NULL, HFILL }
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},
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{ &hf_iapp_cap_wep,
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{ "WEP", "iapp.cap.wep", FT_BOOLEAN, 8, TFS(&tfs_yes_no), IAPP_CAP_WEP, NULL, HFILL }
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},
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{ &hf_iapp_auth_status,
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{ "Status", "iapp.auth.status", FT_UINT8, BASE_DEC, NULL, 0x00, NULL, HFILL }
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},
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{ &hf_iapp_auth_uint,
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{ "Value", "iapp.auth.uint", FT_UINT32, BASE_DEC, NULL, 0x00, NULL, HFILL }
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},
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{ &hf_iapp_auth_string,
|
|
{ "Value", "iapp.auth.string", FT_STRING, BASE_NONE, NULL, 0x00, NULL, HFILL }
|
|
},
|
|
{ &hf_iapp_auth_ipaddr,
|
|
{ "IP Address", "iapp.auth.ipaddr", FT_IPv4, BASE_NONE, NULL, 0x00, NULL, HFILL }
|
|
},
|
|
{ &hf_iapp_auth_trailer,
|
|
{ "Trailer", "iapp.auth.trailer", FT_BYTES, BASE_NONE, NULL, 0x00, NULL, HFILL }
|
|
},
|
|
{ &hf_iapp_pdu_ssid,
|
|
{ "SSID", "iapp.pdu.ssid", FT_STRING, BASE_NONE, NULL, 0x00, NULL, HFILL }
|
|
},
|
|
{ &hf_iapp_pdu_bytes,
|
|
{ "Value", "iapp.pdu.bytes", FT_BYTES, BASE_NONE, NULL, 0x00, NULL, HFILL }
|
|
},
|
|
{ &hf_iapp_pdu_uint,
|
|
{ "Value", "iapp.pdu.uint", FT_UINT32, BASE_DEC, NULL, 0x00, NULL, HFILL }
|
|
},
|
|
{ &hf_iapp_pdu_phytype,
|
|
{ "PHY Type", "iapp.pdu.phytype", FT_UINT8, BASE_DEC, VALS(iapp_phy_vals), 0x00, NULL, HFILL }
|
|
},
|
|
{ &hf_iapp_pdu_regdomain,
|
|
{ "Reg domain", "iapp.pdu.regdomain", FT_UINT8, BASE_DEC, VALS(iapp_dom_vals), 0x00, NULL, HFILL }
|
|
},
|
|
{ &hf_iapp_pdu_oui_ident,
|
|
{ "OUI", "iapp.pdu.oui_ident", FT_UINT24, BASE_DEC, VALS(oui_vals), 0x00, NULL, HFILL }
|
|
},
|
|
};
|
|
|
|
static gint *ett[] = {
|
|
&ett_iapp,
|
|
&ett_iapp_pdu,
|
|
&ett_iapp_subpdu,
|
|
&ett_iapp_cap,
|
|
&ett_iapp_auth,
|
|
&ett_iapp_authinfo
|
|
};
|
|
|
|
static ei_register_info ei[] = {
|
|
{ &ei_iapp_no_pdus, { "iapp.no_pdus", PI_PROTOCOL, PI_NOTE, "No PDUs found", EXPFILL }},
|
|
};
|
|
|
|
expert_module_t* expert_iapp;
|
|
|
|
/* Register the protocol name and description */
|
|
proto_iapp = proto_register_protocol("Inter-Access-Point Protocol", "IAPP", "iapp");
|
|
|
|
/* Required function calls to register the header fields and subtrees used */
|
|
proto_register_field_array(proto_iapp, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
expert_iapp = expert_register_protocol(proto_iapp);
|
|
expert_register_field_array(expert_iapp, ei, array_length(ei));
|
|
}
|
|
|
|
|
|
/* If this dissector uses sub-dissector registration add a registration routine.
|
|
This format is required because a script is used to find these routines and
|
|
create the code that calls these routines.
|
|
*/
|
|
void
|
|
proto_reg_handoff_iapp(void)
|
|
{
|
|
dissector_handle_t iapp_handle;
|
|
|
|
iapp_handle = create_dissector_handle(dissect_iapp, proto_iapp);
|
|
dissector_add_uint("udp.port", UDP_PORT_IAPP, iapp_handle);
|
|
}
|
|
/*
|
|
* Editor modelines - http://www.wireshark.org/tools/modelines.html
|
|
*
|
|
* Local variables:
|
|
* c-basic-offset: 4
|
|
* tab-width: 8
|
|
* indent-tabs-mode: nil
|
|
* End:
|
|
*
|
|
* vi: set shiftwidth=4 tabstop=8 expandtab:
|
|
* :indentSize=4:tabSize=8:noTabs=true:
|
|
*/
|