forked from osmocom/wireshark
![Michael Mann](/assets/img/avatar_default.png)
Similar to the "tcp.port" changes in I99604f95d426ad345f4b494598d94178b886eb67, convert dissectors that use "udp.port". More cleanup done on dissectors that use both TCP and UDP dissector tables, so that less preference callbacks exist. Change-Id: If07be9b9e850c244336a7069599cd554ce312dd3 Reviewed-on: https://code.wireshark.org/review/18120 Petri-Dish: Michael Mann <mmann78@netscape.net> Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org> Reviewed-by: Michael Mann <mmann78@netscape.net>
497 lines
16 KiB
C
497 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/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 int
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dissect_iapp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
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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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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_BIG_ENDIAN);
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proto_tree_add_item(iapp_tree, hf_iapp_type, tvb, 1, 1, ENC_BIG_ENDIAN);
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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_captured_length_remaining(tvb, 2));
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return tvb_captured_length(tvb);
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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 }
|
|
},
|
|
{ &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_with_preference("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:
|
|
*/
|