forked from osmocom/wireshark
3727 lines
109 KiB
C
3727 lines
109 KiB
C
/* packet-ppp.c
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* Routines for ppp packet disassembly
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* RFC 1661, RFC 1662
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*
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* $Id: packet-ppp.c,v 1.117 2003/11/16 23:17:20 guy Exp $
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*
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* Ethereal - Network traffic analyzer
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* By Gerald Combs <gerald@ethereal.com>
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*
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* This file created and by Mike Hall <mlh@io.com>
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* Copyright 1998
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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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <string.h>
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#include <glib.h>
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#include "prefs.h"
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#include <epan/packet.h>
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#include "packet-ppp.h"
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#include "ppptypes.h"
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#include "etypes.h"
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#include "ip_opts.h"
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#include <epan/atalk-utils.h>
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#include "packet-chdlc.h"
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#include "packet-ip.h"
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#include "packet-ipx.h"
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#include "packet-vines.h"
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#include "nlpid.h"
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#include "crc32.h"
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#define ppp_min(a, b) ((a<b) ? a : b)
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static int proto_ppp = -1;
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static int hf_ppp_address = -1;
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static int hf_ppp_control = -1;
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static int hf_ppp_protocol = -1;
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static gint ett_ppp = -1;
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static int proto_lcp = -1;
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static gint ett_lcp = -1;
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static gint ett_lcp_options = -1;
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static gint ett_lcp_authprot_opt = -1;
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static gint ett_lcp_qualprot_opt = -1;
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static gint ett_lcp_fcs_alternatives_opt = -1;
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static gint ett_lcp_numbered_mode_opt = -1;
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static gint ett_lcp_callback_opt = -1;
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static gint ett_lcp_multilink_ep_disc_opt = -1;
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static gint ett_lcp_internationalization_opt = -1;
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static int proto_ipcp = -1;
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static gint ett_ipcp = -1;
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static gint ett_ipcp_options = -1;
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static gint ett_ipcp_ipaddrs_opt = -1;
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static gint ett_ipcp_compressprot_opt = -1;
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static int proto_ccp = -1;
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static gint ett_ccp = -1;
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static gint ett_ccp_options = -1;
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static gint ett_ccp_stac_opt = -1;
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static gint ett_ccp_mppc_opt = -1;
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static gint ett_ccp_bsdcomp_opt = -1;
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static gint ett_ccp_lzsdcp_opt = -1;
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static gint ett_ccp_mvrca_opt = -1;
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static gint ett_ccp_deflate_opt = -1;
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static int proto_cbcp = -1;
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static gint ett_cbcp = -1;
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static gint ett_cbcp_options = -1;
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static gint ett_cbcp_callback_opt = -1;
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static gint ett_cbcp_callback_opt_addr = -1;
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static int proto_bacp = -1;
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static gint ett_bacp = -1;
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static gint ett_bacp_options = -1;
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static gint ett_bacp_favored_peer_opt = -1;
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static int proto_bap = -1;
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static gint ett_bap = -1;
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static gint ett_bap_options = -1;
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static gint ett_bap_link_type_opt = -1;
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static gint ett_bap_phone_delta_opt = -1;
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static gint ett_bap_phone_delta_subopt = -1;
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static gint ett_bap_call_status_opt = -1;
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static int proto_comp_data = -1;
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static gint ett_comp_data = -1;
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static int proto_pppmuxcp = -1;
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static gint ett_pppmuxcp = -1;
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static gint ett_pppmuxcp_options = -1;
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static int proto_pppmux = -1;
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static gint ett_pppmux = -1;
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static gint ett_pppmux_subframe = -1;
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static gint ett_pppmux_subframe_hdr = -1;
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static gint ett_pppmux_subframe_flags = -1;
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static gint ett_pppmux_subframe_info = -1;
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static int proto_mp = -1;
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static int hf_mp_frag_first = -1;
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static int hf_mp_frag_last = -1;
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static int hf_mp_sequence_num = -1;
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static int ett_mp = -1;
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static int ett_mp_flags = -1;
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static int proto_mplscp = -1;
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static gint ett_mplscp = -1;
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static gint ett_mplscp_options = -1;
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static int proto_cdpcp = -1;
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static gint ett_cdpcp = -1;
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static gint ett_cdpcp_options = -1;
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static int proto_pap = -1; /* PAP vars */
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static gint ett_pap = -1;
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static gint ett_pap_data = -1;
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static gint ett_pap_peer_id = -1;
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static gint ett_pap_password = -1;
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static gint ett_pap_message = -1;
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static int proto_chap = -1; /* CHAP vars */
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static gint ett_chap = -1;
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static gint ett_chap_data = -1;
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static gint ett_chap_value = -1;
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static gint ett_chap_name = -1;
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static gint ett_chap_message = -1;
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static int proto_ipv6cp = -1; /* IPv6CP vars */
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static gint ett_ipv6cp = -1;
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static gint ett_ipv6cp_options = -1;
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static gint ett_ipv6cp_if_id_opt = -1;
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static gint ett_ipv6cp_compressprot_opt = -1;
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static dissector_table_t ppp_subdissector_table;
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static dissector_handle_t chdlc_handle;
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static dissector_handle_t data_handle;
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/* options */
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static gint ppp_fcs_decode = 0; /* 0 = No FCS, 1 = 16 bit FCS, 2 = 32 bit FCS */
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#define NO_FCS 0
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#define FCS_16 1
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#define FCS_32 2
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const enum_val_t fcs_options[] = {
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{"None", NO_FCS},
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{"16-Bit", FCS_16},
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{"32-Bit", FCS_32},
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{NULL, -1}
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};
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gboolean ppp_vj_decomp = TRUE; /* Default to VJ header decompression */
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/*
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* For Default Protocol ID negotiated with PPPMuxCP. We need to
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* this ID so that if the first subframe doesn't have protocol
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* ID, we can use it
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*/
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static guint pppmux_def_prot_id = 0;
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/* PPP definitions */
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/*
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* Used by the GTP dissector as well.
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*/
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const value_string ppp_vals[] = {
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{PPP_PADDING, "Padding Protocol" },
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{PPP_ROHC_SCID, "ROHC small-CID" },
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{PPP_ROHC_LCID, "ROHC large-CID" },
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{PPP_IP, "IP" },
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{PPP_OSI, "OSI" },
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{PPP_DEC4, "DECnet Phase IV" },
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{PPP_AT, "Appletalk" },
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{PPP_IPX, "Netware IPX/SPX"},
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{PPP_VJC_COMP, "VJ compressed TCP"},
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{PPP_VJC_UNCOMP,"VJ uncompressed TCP"},
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{PPP_BPDU, "Bridging PDU"},
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{PPP_ST, "Stream Protocol (ST-II)" },
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{PPP_VINES, "Vines" },
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{PPP_AT_EDDP, "AppleTalk EDDP" },
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{PPP_AT_SB, "AppleTalk SmartBuffered" },
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{PPP_MP, "Multilink"},
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{PPP_NB, "NETBIOS Framing" },
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{PPP_CISCO, "Cisco Systems" },
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{PPP_ASCOM, "Ascom Timeplex" },
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{PPP_LBLB, "Fujitsu Link Backup and Load Balancing" },
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{PPP_RL, "DCA Remote Lan" },
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{PPP_SDTP, "Serial Data Transport Protocol" },
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{PPP_LLC, "SNA over LLC" },
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{PPP_SNA, "SNA" },
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{PPP_IPV6HC, "IPv6 Header Compression " },
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{PPP_KNX, "KNX Bridging Data" },
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{PPP_ENCRYPT, "Encryption" },
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{PPP_ILE, "Individual Link Encryption" },
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{PPP_IPV6, "IPv6" },
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{PPP_MUX, "PPP Multiplexing"},
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{PPP_RTP_FH, "RTP IPHC Full Header" },
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{PPP_RTP_CTCP, "RTP IPHC Compressed TCP" },
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{PPP_RTP_CNTCP, "RTP IPHC Compressed Non TCP" },
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{PPP_RTP_CUDP8, "RTP IPHC Compressed UDP 8" },
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{PPP_RTP_CRTP8, "RTP IPHC Compressed RTP 8" },
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{PPP_STAMPEDE, "Stampede Bridging" },
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{PPP_MPPLUS, "MP+ Protocol" },
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{PPP_NTCITS_IPI,"NTCITS IPI" },
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{PPP_ML_SLCOMP, "single link compression in multilink" },
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{PPP_COMP, "compressed packet" },
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{PPP_STP_HELLO, "802.1d Hello Packet" },
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{PPP_IBM_SR, "IBM Source Routing BPDU" },
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{PPP_DEC_LB, "DEC LANBridge100 Spanning Tree"},
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{PPP_CDP, "Cisco Discovery Protocol" },
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{PPP_NETCS, "Netcs Twin Routing" },
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{PPP_STP, "Scheduled Transfer Protocol" },
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{PPP_EDP, "Extreme Discovery Protocol" },
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{PPP_OSCP, "Optical Supervisory Channel Protocol" },
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{PPP_OSCP2, "Optical Supervisory Channel Protocol" },
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{PPP_LUXCOM, "Luxcom" },
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{PPP_SIGMA, "Sigma Network Systems" },
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{PPP_ACSP, "Apple Client Server Protocol" },
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{PPP_MPLS_UNI, "MPLS Unicast"},
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{PPP_MPLS_MULTI, "MPLS Multicast"},
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{PPP_P12844, "IEEE p1284.4 standard - data packets" },
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{PPP_ETSI, "ETSI TETRA Networks Procotol Type 1" },
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{PPP_MFTP, "Multichannel Flow Treatment Protocol" },
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{PPP_RTP_CTCPND,"RTP IPHC Compressed TCP No Delta" },
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{PPP_RTP_CS, "RTP IPHC Context State" },
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{PPP_RTP_CUDP16,"RTP IPHC Compressed UDP 16" },
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{PPP_RTP_CRDP16,"RTP IPHC Compressed RTP 16" },
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{PPP_CCCP, "Cray Communications Control Protocol" },
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{PPP_CDPD_MNRP, "CDPD Mobile Network Registration Protocol" },
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{PPP_EXPANDAP, "Expand accelarator protocol" },
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{PPP_ODSICP, "ODSICP NCP" },
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{PPP_DOCSIS, "DOCSIS DLL" },
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{PPP_LZS, "Stacker LZS" },
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{PPP_REFTEK, "RefTek Protocol" },
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{PPP_FC, "Fibre Channel" },
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{PPP_EMIT, "EMIT Protocols" },
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{PPP_IPCP, "IP Control Protocol" },
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{PPP_OSICP, "OSI Control Protocol" },
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{PPP_XNSIDPCP, "Xerox NS IDP Control Protocol" },
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{PPP_DECNETCP, "DECnet Phase IV Control Protocol" },
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{PPP_ATCP, "AppleTalk Control Protocol" },
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{PPP_IPXCP, "IPX Control Protocol" },
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{PPP_BRIDGENCP, "Bridging NCP" },
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{PPP_SPCP, "Stream Protocol Control Protocol" },
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{PPP_BVCP, "Banyan Vines Control Protocol" },
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{PPP_MLCP, "Multi-Link Control Protocol" },
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{PPP_NBCP, "NETBIOS Framing Control Protocol" },
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{PPP_CISCOCP, "Cisco Systems Control Protocol" },
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{PPP_ASCOMCP, "Ascom Timeplex" },
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{PPP_LBLBCP, "Fujitsu LBLB Control Protocol" },
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{PPP_RLNCP, "DCA Remote Lan Network Control Protocol" },
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{PPP_SDCP, "Serial Data Control Protocol" },
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{PPP_LLCCP, "SNA over LLC Control Protocol" },
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{PPP_SNACP, "SNA Control Protocol" },
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{PPP_KNXCP, "KNX Bridging Control Protocol" },
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{PPP_ECP, "Encryption Control Protocol" },
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{PPP_ILECP, "Individual Encryption Control Protocol" },
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{PPP_IPV6CP, "IPv6 Control Protocol" },
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{PPP_MUXCP, "PPPMux Control Protocol"},
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{PPP_STAMPEDECP,"Stampede Bridging Control Protocol" },
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{PPP_MPPCP, "MP+ Contorol Protocol" },
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{PPP_IPICP, "NTCITS IPI Control Protocol" },
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{PPP_SLCC, "single link compression in multilink control" },
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{PPP_CCP, "Compression Control Protocol" },
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{PPP_CDPCP, "CDP Control Protocol" },
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{PPP_NETCSCP, "Netcs Twin Routing" },
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{PPP_STPCP, "STP - Control Protocol" },
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{PPP_EDPCP, "EDP Control Protocol" },
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{PPP_ACSPC, "Apple Client Server Protocol Control" },
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{PPP_MPLSCP, "MPLS Control Protocol" },
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{PPP_P12844CP, "IEEE p1284.4 standard - Protocol Control" },
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{PPP_ETSICP, "ETSI TETRA TNP1 Control Protocol" },
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{PPP_MFTPCP, "Multichannel Flow Treatment Protocol" },
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{PPP_LCP, "Link Control Protocol" },
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{PPP_PAP, "Password Authentication Protocol" },
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{PPP_LQR, "Link Quality Report protocol" },
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{PPP_SPAP, "Shiva Password Authentication Protocol" },
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{PPP_CBCP, "Callback Control Protocol" },
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{PPP_BACP, "Bandwidth Allocation Control Protocol" },
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{PPP_BAP, "Bandwidth Allocation Protocol" },
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{PPP_CONTCP, "Container Control Protocol" },
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{PPP_CHAP, "Challenge Handshake Authentication Protocol" },
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{PPP_RSAAP, "RSA Authentication Protocol" },
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{PPP_EAP, "Extensible Authentication Protocol" },
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{PPP_SIEP, "Mitsubishi Security Information Exchange Protocol"},
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{PPP_SBAP, "Stampede Bridging Authorization Protocol" },
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{PPP_PRPAP, "Proprietary Authentication Protocol" },
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{PPP_PRPAP2, "Proprietary Authentication Protocol" },
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{PPP_PRPNIAP, "Proprietary Node ID Authentication Protocol" },
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{0, NULL }
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};
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/* CP (LCP, IPCP, etc.) codes.
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* from pppd fsm.h
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*/
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#define CONFREQ 1 /* Configuration Request */
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#define CONFACK 2 /* Configuration Ack */
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#define CONFNAK 3 /* Configuration Nak */
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#define CONFREJ 4 /* Configuration Reject */
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#define TERMREQ 5 /* Termination Request */
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#define TERMACK 6 /* Termination Ack */
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#define CODEREJ 7 /* Code Reject */
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static const value_string cp_vals[] = {
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{CONFREQ, "Configuration Request" },
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{CONFACK, "Configuration Ack" },
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{CONFNAK, "Configuration Nak" },
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{CONFREJ, "Configuration Reject" },
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{TERMREQ, "Termination Request" },
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{TERMACK, "Termination Ack" },
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{CODEREJ, "Code Reject" },
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{0, NULL } };
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/*
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* LCP-specific packet types.
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*/
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#define PROTREJ 8 /* Protocol Reject */
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#define ECHOREQ 9 /* Echo Request */
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#define ECHOREP 10 /* Echo Reply */
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#define DISCREQ 11 /* Discard Request */
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#define IDENT 12 /* Identification */
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#define TIMEREMAIN 13 /* Time remaining */
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/*
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* CCP-specific packet types.
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*/
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#define RESETREQ 14 /* Reset Request */
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#define RESETACK 15 /* Reset Ack */
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/*
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* CBCP-specific packet types.
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*/
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#define CBREQ 1 /* Callback Request */
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#define CBRES 2 /* Callback Response */
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#define CBACK 3 /* Callback Ack */
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#define CBCP_OPT 6 /* Use callback control protocol */
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/*
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* BAP-specific packet types.
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*/
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#define BAP_CREQ 1 /* Call Request */
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#define BAP_CRES 2 /* Call Response */
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#define BAP_CBREQ 3 /* Callback Request */
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#define BAP_CBRES 4 /* Callback Response */
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#define BAP_LDQREQ 5 /* Link Drop Query Request */
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#define BAP_LDQRES 6 /* Link Drop Query Response */
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#define BAP_CSI 7 /* Call Status Indication */
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#define BAP_CSRES 8 /* Call Status Response */
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static const value_string lcp_vals[] = {
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{CONFREQ, "Configuration Request" },
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{CONFACK, "Configuration Ack" },
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{CONFNAK, "Configuration Nak" },
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{CONFREJ, "Configuration Reject" },
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{TERMREQ, "Termination Request" },
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{TERMACK, "Termination Ack" },
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{CODEREJ, "Code Reject" },
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{PROTREJ, "Protocol Reject" },
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{ECHOREQ, "Echo Request" },
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{ECHOREP, "Echo Reply" },
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{DISCREQ, "Discard Request" },
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{IDENT, "Identification" },
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{TIMEREMAIN, "Time Remaining" },
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{0, NULL }
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};
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static const value_string ccp_vals[] = {
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{CONFREQ, "Configuration Request" },
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{CONFACK, "Configuration Ack" },
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{CONFNAK, "Configuration Nak" },
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{CONFREJ, "Configuration Reject" },
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{TERMREQ, "Termination Request" },
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{TERMACK, "Termination Ack" },
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{CODEREJ, "Code Reject" },
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{RESETREQ, "Reset Request" },
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{RESETACK, "Reset Ack" },
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{0, NULL }
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};
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static const value_string cbcp_vals[] = {
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{CBREQ, "Callback Request" },
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{CBRES, "Callback Response" },
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{CBACK, "Callback Ack" },
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{0, NULL }
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};
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static const value_string bap_vals[] = {
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{BAP_CREQ, "Call Request" },
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{BAP_CRES, "Call Response" },
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{BAP_CBREQ, "Callback Request" },
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{BAP_CBRES, "Callback Response" },
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{BAP_LDQREQ, "Link Drop Query Request" },
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{BAP_LDQRES, "Link Drop Query Response" },
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{BAP_CSI, "Call Status Indication" },
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{BAP_CSRES, "Call Status Response" },
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{0, NULL }
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};
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#define BAP_RESP_CODE_REQACK 0x00
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#define BAP_RESP_CODE_REQNAK 0x01
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#define BAP_RESP_CODE_REQREJ 0x02
|
|
#define BAP_RESP_CODE_REQFULLNAK 0x03
|
|
static const value_string bap_resp_code_vals[] = {
|
|
{BAP_RESP_CODE_REQACK, "Request Ack" },
|
|
{BAP_RESP_CODE_REQNAK, "Request Nak" },
|
|
{BAP_RESP_CODE_REQREJ, "Request Rej" },
|
|
{BAP_RESP_CODE_REQFULLNAK, "Request Full Nak" },
|
|
{0, NULL }
|
|
};
|
|
|
|
#define BAP_LINK_TYPE_ISDN 0 /* ISDN */
|
|
#define BAP_LINK_TYPE_X25 1 /* X.25 */
|
|
#define BAP_LINK_TYPE_ANALOG 2 /* Analog */
|
|
#define BAP_LINK_TYPE_SD 3 /* Switched Digital (non-ISDN) */
|
|
#define BAP_LINK_TYPE_ISDNOV 4 /* ISDN data over voice */
|
|
#define BAP_LINK_TYPE_RESV5 5 /* Reserved */
|
|
#define BAP_LINK_TYPE_RESV6 6 /* Reserved */
|
|
#define BAP_LINK_TYPE_RESV7 7 /* Reserved */
|
|
static const value_string bap_link_type_vals[] = {
|
|
{BAP_LINK_TYPE_ISDN, "ISDN" },
|
|
{BAP_LINK_TYPE_X25, "X.25" },
|
|
{BAP_LINK_TYPE_ANALOG, "Analog" },
|
|
{BAP_LINK_TYPE_SD, "Switched Digital (non-ISDN)" },
|
|
{BAP_LINK_TYPE_ISDNOV, "ISDN data over voice" },
|
|
{BAP_LINK_TYPE_RESV5, "Reserved" },
|
|
{BAP_LINK_TYPE_RESV6, "Reserved" },
|
|
{BAP_LINK_TYPE_RESV7, "Reserved" },
|
|
{0, NULL }
|
|
};
|
|
|
|
#define BAP_PHONE_DELTA_SUBOPT_UNIQ_DIGIT 1 /* Unique Digit */
|
|
#define BAP_PHONE_DELTA_SUBOPT_SUBSC_NUM 2 /* Subscriber Number */
|
|
#define BAP_PHONE_DELTA_SUBOPT_PHONENUM_SUBADDR 3 /* Phone Number Sub Address */
|
|
static const value_string bap_phone_delta_subopt_vals[] = {
|
|
{BAP_PHONE_DELTA_SUBOPT_UNIQ_DIGIT, "Unique Digit" },
|
|
{BAP_PHONE_DELTA_SUBOPT_SUBSC_NUM, "Subscriber Number" },
|
|
{BAP_PHONE_DELTA_SUBOPT_PHONENUM_SUBADDR, "Phone Number Sub Address" },
|
|
{0, NULL }
|
|
};
|
|
|
|
/*
|
|
* Cause codes for Cause.
|
|
*
|
|
* The following code table is taken from packet-q931.c but is slightly
|
|
* adapted to BAP protocol.
|
|
*/
|
|
static const value_string q931_cause_code_vals[] = {
|
|
{ 0x00, "Call successful" },
|
|
{ 0x01, "Unallocated (unassigned) number" },
|
|
{ 0x02, "No route to specified transit network" },
|
|
{ 0x03, "No route to destination" },
|
|
{ 0x04, "Send special information tone" },
|
|
{ 0x05, "Misdialled trunk prefix" },
|
|
{ 0x06, "Channel unacceptable" },
|
|
{ 0x07, "Call awarded and being delivered in an established channel" },
|
|
{ 0x08, "Prefix 0 dialed but not allowed" },
|
|
{ 0x09, "Prefix 1 dialed but not allowed" },
|
|
{ 0x0A, "Prefix 1 dialed but not required" },
|
|
{ 0x0B, "More digits received than allowed, call is proceeding" },
|
|
{ 0x10, "Normal call clearing" },
|
|
{ 0x11, "User busy" },
|
|
{ 0x12, "No user responding" },
|
|
{ 0x13, "No answer from user (user alerted)" },
|
|
{ 0x14, "Subscriber absent" },
|
|
{ 0x15, "Call rejected" },
|
|
{ 0x16, "Number changed" },
|
|
{ 0x17, "Reverse charging rejected" },
|
|
{ 0x18, "Call suspended" },
|
|
{ 0x19, "Call resumed" },
|
|
{ 0x1A, "Non-selected user clearing" },
|
|
{ 0x1B, "Destination out of order" },
|
|
{ 0x1C, "Invalid number format (incomplete number)" },
|
|
{ 0x1D, "Facility rejected" },
|
|
{ 0x1E, "Response to STATUS ENQUIRY" },
|
|
{ 0x1F, "Normal unspecified" },
|
|
{ 0x21, "Circuit out of order" },
|
|
{ 0x22, "No circuit/channel available" },
|
|
{ 0x23, "Destination unattainable" },
|
|
{ 0x25, "Degraded service" },
|
|
{ 0x26, "Network out of order" },
|
|
{ 0x27, "Transit delay range cannot be achieved" },
|
|
{ 0x28, "Throughput range cannot be achieved" },
|
|
{ 0x29, "Temporary failure" },
|
|
{ 0x2A, "Switching equipment congestion" },
|
|
{ 0x2B, "Access information discarded" },
|
|
{ 0x2C, "Requested circuit/channel not available" },
|
|
{ 0x2D, "Pre-empted" },
|
|
{ 0x2E, "Precedence call blocked" },
|
|
{ 0x2F, "Resources unavailable, unspecified" },
|
|
{ 0x31, "Quality of service unavailable" },
|
|
{ 0x32, "Requested facility not subscribed" },
|
|
{ 0x33, "Reverse charging not allowed" },
|
|
{ 0x34, "Outgoing calls barred" },
|
|
{ 0x35, "Outgoing calls barred within CUG" },
|
|
{ 0x36, "Incoming calls barred" },
|
|
{ 0x37, "Incoming calls barred within CUG" },
|
|
{ 0x38, "Call waiting not subscribed" },
|
|
{ 0x39, "Bearer capability not authorized" },
|
|
{ 0x3A, "Bearer capability not presently available" },
|
|
{ 0x3E, "Inconsistency in designated outgoing access information and subscriber class" },
|
|
{ 0x3F, "Service or option not available, unspecified" },
|
|
{ 0x41, "Bearer capability not implemented" },
|
|
{ 0x42, "Channel type not implemented" },
|
|
{ 0x43, "Transit network selection not implemented" },
|
|
{ 0x44, "Message not implemented" },
|
|
{ 0x45, "Requested facility not implemented" },
|
|
{ 0x46, "Only restricted digital information bearer capability is available" },
|
|
{ 0x4F, "Service or option not implemented, unspecified" },
|
|
{ 0x51, "Invalid call reference value" },
|
|
{ 0x52, "Identified channel does not exist" },
|
|
{ 0x53, "Call identity does not exist for suspended call" },
|
|
{ 0x54, "Call identity in use" },
|
|
{ 0x55, "No call suspended" },
|
|
{ 0x56, "Call having the requested call identity has been cleared" },
|
|
{ 0x57, "Called user not member of CUG" },
|
|
{ 0x58, "Incompatible destination" },
|
|
{ 0x59, "Non-existent abbreviated address entry" },
|
|
{ 0x5A, "Destination address missing, and direct call not subscribed" },
|
|
{ 0x5B, "Invalid transit network selection (national use)" },
|
|
{ 0x5C, "Invalid facility parameter" },
|
|
{ 0x5D, "Mandatory information element is missing" },
|
|
{ 0x5F, "Invalid message, unspecified" },
|
|
{ 0x60, "Mandatory information element is missing" },
|
|
{ 0x61, "Message type non-existent or not implemented" },
|
|
{ 0x62, "Message not compatible with call state or message type non-existent or not implemented" },
|
|
{ 0x63, "Information element nonexistant or not implemented" },
|
|
{ 0x64, "Invalid information element contents" },
|
|
{ 0x65, "Message not compatible with call state" },
|
|
{ 0x66, "Recovery on timer expiry" },
|
|
{ 0x67, "Parameter non-existent or not implemented - passed on" },
|
|
{ 0x6E, "Message with unrecognized parameter discarded" },
|
|
{ 0x6F, "Protocol error, unspecified" },
|
|
{ 0x7F, "Internetworking, unspecified" },
|
|
{ 0xFF, "Non-specific failure" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static const value_string bap_call_status_opt_action_vals[] = {
|
|
{0, "No retry" },
|
|
{1, "Retry" },
|
|
{0, NULL }
|
|
};
|
|
|
|
#define STAC_CM_NONE 0
|
|
#define STAC_CM_LCB 1
|
|
#define STAC_CM_CRC 2
|
|
#define STAC_CM_SN 3
|
|
#define STAC_CM_EXTMODE 4
|
|
static const value_string stac_checkmode_vals[] = {
|
|
{STAC_CM_NONE, "None" },
|
|
{STAC_CM_LCB, "LCB" },
|
|
{STAC_CM_CRC, "CRC" },
|
|
{STAC_CM_SN, "Sequence Number" },
|
|
{STAC_CM_EXTMODE, "Extended Mode" },
|
|
{0, NULL }
|
|
};
|
|
|
|
#define LZSDCP_CM_NONE 0
|
|
#define LZSDCP_CM_LCB 1
|
|
#define LZSDCP_CM_SN 2
|
|
#define LZSDCP_CM_SN_LCB 3
|
|
static const value_string lzsdcp_checkmode_vals[] = {
|
|
{LZSDCP_CM_NONE, "None" },
|
|
{LZSDCP_CM_LCB, "LCB" },
|
|
{LZSDCP_CM_SN, "Sequence Number" },
|
|
{LZSDCP_CM_SN_LCB, "Sequence Number + LCB" },
|
|
{0, NULL }
|
|
};
|
|
|
|
#define LZSDCP_PM_NONE 0
|
|
#define LZSDCP_PM_PROC_UNCOMP 1
|
|
static const value_string lzsdcp_processmode_vals[] = {
|
|
{LZSDCP_PM_NONE, "None" },
|
|
{LZSDCP_PM_PROC_UNCOMP, "Process-Uncompressed" },
|
|
{0, NULL }
|
|
};
|
|
|
|
/*
|
|
* Options. (LCP)
|
|
*/
|
|
#define CI_MRU 1 /* Maximum Receive Unit */
|
|
#define CI_ASYNCMAP 2 /* Async Control Character Map */
|
|
#define CI_AUTHTYPE 3 /* Authentication Type */
|
|
#define CI_QUALITY 4 /* Quality Protocol */
|
|
#define CI_MAGICNUMBER 5 /* Magic Number */
|
|
#define CI_PCOMPRESSION 7 /* Protocol Field Compression */
|
|
#define CI_ACCOMPRESSION 8 /* Address/Control Field Compression */
|
|
#define CI_FCS_ALTERNATIVES 9 /* FCS Alternatives (RFC 1570) */
|
|
#define CI_SELF_DESCRIBING_PAD 10 /* Self-Describing Pad (RFC 1570) */
|
|
#define CI_NUMBERED_MODE 11 /* Numbered Mode (RFC 1663) */
|
|
#define CI_CALLBACK 13 /* Callback (RFC 1570) */
|
|
#define CI_COMPOUND_FRAMES 15 /* Compound frames (RFC 1570) */
|
|
#define CI_MULTILINK_MRRU 17 /* Multilink MRRU (RFC 1717) */
|
|
#define CI_MULTILINK_SSNH 18 /* Multilink Short Sequence Number
|
|
Header (RFC 1717) */
|
|
#define CI_MULTILINK_EP_DISC 19 /* Multilink Endpoint Discriminator
|
|
(RFC 1717) */
|
|
#define CI_DCE_IDENTIFIER 21 /* DCE Identifier */
|
|
#define CI_MULTILINK_PLUS_PROC 22 /* Multilink Plus Procedure */
|
|
#define CI_LINK_DISC_FOR_BACP 23 /* Link Discriminator for BACP
|
|
(RFC 2125) */
|
|
#define CI_LCP_AUTHENTICATION 24 /* LCP Authentication Option */
|
|
#define CI_COBS 25 /* Consistent Overhead Byte
|
|
Stuffing */
|
|
#define CI_PREFIX_ELISION 26 /* Prefix elision */
|
|
#define CI_MULTILINK_HDR_FMT 27 /* Multilink header format */
|
|
#define CI_INTERNATIONALIZATION 28 /* Internationalization (RFC 2484) */
|
|
#define CI_SDL_ON_SONET_SDH 29 /* Simple Data Link on SONET/SDH */
|
|
|
|
static void dissect_lcp_mru_opt(const ip_tcp_opt *optp, tvbuff_t *tvb,
|
|
int offset, guint length, packet_info *pinfo,
|
|
proto_tree *tree);
|
|
static void dissect_lcp_async_map_opt(const ip_tcp_opt *optp, tvbuff_t *tvb,
|
|
int offset, guint length, packet_info *pinfo,
|
|
proto_tree *tree);
|
|
static void dissect_lcp_protocol_opt(const ip_tcp_opt *optp, tvbuff_t *tvb,
|
|
int offset, guint length, packet_info *pinfo,
|
|
proto_tree *tree);
|
|
static void dissect_lcp_authprot_opt(const ip_tcp_opt *optp, tvbuff_t *tvb,
|
|
int offset, guint length, packet_info *pinfo,
|
|
proto_tree *tree);
|
|
static void dissect_lcp_magicnumber_opt(const ip_tcp_opt *optp,
|
|
tvbuff_t *tvb, int offset, guint length,
|
|
packet_info *pinfo, proto_tree *tree);
|
|
static void dissect_lcp_fcs_alternatives_opt(const ip_tcp_opt *optp,
|
|
tvbuff_t *tvb, int offset, guint length,
|
|
packet_info *pinfo, proto_tree *tree);
|
|
static void dissect_lcp_numbered_mode_opt(const ip_tcp_opt *optp,
|
|
tvbuff_t *tvb, int offset, guint length,
|
|
packet_info *pinfo, proto_tree *tree);
|
|
static void dissect_lcp_self_describing_pad_opt(const ip_tcp_opt *optp,
|
|
tvbuff_t *tvb, int offset, guint length,
|
|
packet_info *pinfo, proto_tree *tree);
|
|
static void dissect_lcp_callback_opt(const ip_tcp_opt *optp, tvbuff_t *tvb,
|
|
int offset, guint length, packet_info *pinfo,
|
|
proto_tree *tree);
|
|
static void dissect_lcp_multilink_mrru_opt(const ip_tcp_opt *optp,
|
|
tvbuff_t *tvb, int offset, guint length,
|
|
packet_info *pinfo, proto_tree *tree);
|
|
static void dissect_lcp_multilink_ep_disc_opt(const ip_tcp_opt *optp,
|
|
tvbuff_t *tvb, int offset, guint length,
|
|
packet_info *pinfo, proto_tree *tree);
|
|
static void dissect_lcp_bap_link_discriminator_opt(const ip_tcp_opt *optp,
|
|
tvbuff_t *tvb, int offset, guint length,
|
|
packet_info *pinfo, proto_tree *tree);
|
|
static void dissect_lcp_internationalization_opt(const ip_tcp_opt *optp,
|
|
tvbuff_t *tvb, int offset, guint length,
|
|
packet_info *pinfo, proto_tree *tree);
|
|
static void dissect_mp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
|
|
|
|
static const ip_tcp_opt lcp_opts[] = {
|
|
{
|
|
CI_MRU,
|
|
"Maximum Receive Unit",
|
|
NULL,
|
|
FIXED_LENGTH,
|
|
4,
|
|
dissect_lcp_mru_opt
|
|
},
|
|
{
|
|
CI_ASYNCMAP,
|
|
"Async Control Character Map",
|
|
NULL,
|
|
FIXED_LENGTH,
|
|
6,
|
|
dissect_lcp_async_map_opt
|
|
},
|
|
{
|
|
CI_AUTHTYPE,
|
|
"Authentication protocol",
|
|
&ett_lcp_authprot_opt,
|
|
VARIABLE_LENGTH,
|
|
4,
|
|
dissect_lcp_authprot_opt
|
|
},
|
|
{
|
|
CI_QUALITY,
|
|
"Quality protocol",
|
|
&ett_lcp_qualprot_opt,
|
|
VARIABLE_LENGTH,
|
|
4,
|
|
dissect_lcp_protocol_opt
|
|
},
|
|
{
|
|
CI_MAGICNUMBER,
|
|
"Magic number",
|
|
NULL,
|
|
FIXED_LENGTH,
|
|
6,
|
|
dissect_lcp_magicnumber_opt
|
|
},
|
|
{
|
|
CI_PCOMPRESSION,
|
|
"Protocol field compression",
|
|
NULL,
|
|
FIXED_LENGTH,
|
|
2,
|
|
NULL
|
|
},
|
|
{
|
|
CI_ACCOMPRESSION,
|
|
"Address/control field compression",
|
|
NULL,
|
|
FIXED_LENGTH,
|
|
2,
|
|
NULL
|
|
},
|
|
{
|
|
CI_FCS_ALTERNATIVES,
|
|
"FCS alternatives",
|
|
&ett_lcp_fcs_alternatives_opt,
|
|
FIXED_LENGTH,
|
|
3,
|
|
dissect_lcp_fcs_alternatives_opt
|
|
},
|
|
{
|
|
CI_SELF_DESCRIBING_PAD,
|
|
"Maximum octets of self-describing padding",
|
|
NULL,
|
|
FIXED_LENGTH,
|
|
3,
|
|
dissect_lcp_self_describing_pad_opt
|
|
},
|
|
{
|
|
CI_NUMBERED_MODE,
|
|
"Numbered mode",
|
|
&ett_lcp_numbered_mode_opt,
|
|
VARIABLE_LENGTH,
|
|
4,
|
|
dissect_lcp_numbered_mode_opt
|
|
},
|
|
{
|
|
CI_CALLBACK,
|
|
"Callback",
|
|
&ett_lcp_callback_opt,
|
|
VARIABLE_LENGTH,
|
|
3,
|
|
dissect_lcp_callback_opt,
|
|
},
|
|
{
|
|
CI_COMPOUND_FRAMES,
|
|
"Compound frames",
|
|
NULL,
|
|
FIXED_LENGTH,
|
|
2,
|
|
NULL
|
|
},
|
|
{
|
|
CI_MULTILINK_MRRU,
|
|
"Multilink MRRU",
|
|
NULL,
|
|
FIXED_LENGTH,
|
|
4,
|
|
dissect_lcp_multilink_mrru_opt
|
|
},
|
|
{
|
|
CI_MULTILINK_SSNH,
|
|
"Use short sequence number headers",
|
|
NULL,
|
|
FIXED_LENGTH,
|
|
2,
|
|
NULL
|
|
},
|
|
{
|
|
CI_MULTILINK_EP_DISC,
|
|
"Multilink endpoint discriminator",
|
|
&ett_lcp_multilink_ep_disc_opt,
|
|
VARIABLE_LENGTH,
|
|
3,
|
|
dissect_lcp_multilink_ep_disc_opt,
|
|
},
|
|
{
|
|
CI_DCE_IDENTIFIER,
|
|
"DCE identifier",
|
|
NULL,
|
|
VARIABLE_LENGTH,
|
|
2,
|
|
NULL
|
|
},
|
|
{
|
|
CI_MULTILINK_PLUS_PROC,
|
|
"Multilink Plus Procedure",
|
|
NULL,
|
|
VARIABLE_LENGTH,
|
|
2,
|
|
NULL
|
|
},
|
|
{
|
|
CI_LINK_DISC_FOR_BACP,
|
|
"Link discriminator for BAP",
|
|
NULL,
|
|
FIXED_LENGTH,
|
|
4,
|
|
dissect_lcp_bap_link_discriminator_opt
|
|
},
|
|
{
|
|
CI_LCP_AUTHENTICATION,
|
|
"LCP authentication",
|
|
NULL,
|
|
VARIABLE_LENGTH,
|
|
2,
|
|
NULL
|
|
},
|
|
{
|
|
CI_COBS,
|
|
"Consistent Overhead Byte Stuffing",
|
|
NULL,
|
|
VARIABLE_LENGTH,
|
|
2,
|
|
NULL
|
|
},
|
|
{
|
|
CI_PREFIX_ELISION,
|
|
"Prefix elision",
|
|
NULL,
|
|
VARIABLE_LENGTH,
|
|
2,
|
|
NULL
|
|
},
|
|
{
|
|
CI_MULTILINK_HDR_FMT,
|
|
"Multilink header format",
|
|
NULL,
|
|
VARIABLE_LENGTH,
|
|
2,
|
|
NULL
|
|
},
|
|
{
|
|
CI_INTERNATIONALIZATION,
|
|
"Internationalization",
|
|
&ett_lcp_internationalization_opt,
|
|
VARIABLE_LENGTH,
|
|
7,
|
|
dissect_lcp_internationalization_opt
|
|
},
|
|
{
|
|
CI_SDL_ON_SONET_SDH,
|
|
"Simple data link on SONET/SDH",
|
|
NULL,
|
|
VARIABLE_LENGTH,
|
|
2,
|
|
NULL
|
|
}
|
|
};
|
|
|
|
#define N_LCP_OPTS (sizeof lcp_opts / sizeof lcp_opts[0])
|
|
|
|
/*
|
|
* CHAP Algorithms
|
|
*/
|
|
#define CHAP_ALG_MD5 0x05 /* CHAP with MD5 */
|
|
#define CHAP_ALG_MSV1 0x80 /* MS-CHAPv1 */
|
|
#define CHAP_ALG_MSV2 0x81 /* MS-CHAPv2 */
|
|
|
|
static const value_string chap_alg_vals[] = {
|
|
{CHAP_ALG_MD5, "CHAP with MD5" },
|
|
{CHAP_ALG_MSV1, "MS-CHAP" },
|
|
{CHAP_ALG_MSV2, "MS-CHAP-2" },
|
|
{0, NULL }
|
|
};
|
|
|
|
|
|
/*
|
|
* Options. (IPCP)
|
|
*/
|
|
#define CI_ADDRS 1 /* IP Addresses (deprecated) (RFC 1172) */
|
|
#define CI_COMPRESSTYPE 2 /* Compression Type (RFC 1332) */
|
|
#define CI_ADDR 3 /* IP Address (RFC 1332) */
|
|
#define CI_MOBILE_IPv4 4 /* Mobile IPv4 (RFC 2290) */
|
|
#define CI_MS_DNS1 129 /* Primary DNS value (RFC 1877) */
|
|
#define CI_MS_WINS1 130 /* Primary WINS value (RFC 1877) */
|
|
#define CI_MS_DNS2 131 /* Secondary DNS value (RFC 1877) */
|
|
#define CI_MS_WINS2 132 /* Secondary WINS value (RFC 1877) */
|
|
|
|
static void dissect_ipcp_addrs_opt(const ip_tcp_opt *optp, tvbuff_t *tvb,
|
|
int offset, guint length, packet_info *pinfo,
|
|
proto_tree *tree);
|
|
static void dissect_ipcp_addr_opt(const ip_tcp_opt *optp, tvbuff_t *tvb,
|
|
int offset, guint length, packet_info *pinfo,
|
|
proto_tree *tree);
|
|
|
|
static const ip_tcp_opt ipcp_opts[] = {
|
|
{
|
|
CI_ADDRS,
|
|
"IP addresses (deprecated)",
|
|
&ett_ipcp_ipaddrs_opt,
|
|
FIXED_LENGTH,
|
|
10,
|
|
dissect_ipcp_addrs_opt
|
|
},
|
|
{
|
|
CI_COMPRESSTYPE,
|
|
"IP compression protocol",
|
|
&ett_ipcp_compressprot_opt,
|
|
VARIABLE_LENGTH,
|
|
4,
|
|
dissect_lcp_protocol_opt
|
|
},
|
|
{
|
|
CI_ADDR,
|
|
"IP address",
|
|
NULL,
|
|
FIXED_LENGTH,
|
|
6,
|
|
dissect_ipcp_addr_opt
|
|
},
|
|
{
|
|
CI_MOBILE_IPv4,
|
|
"Mobile node's home IP address",
|
|
NULL,
|
|
FIXED_LENGTH,
|
|
6,
|
|
dissect_ipcp_addr_opt
|
|
},
|
|
{
|
|
CI_MS_DNS1,
|
|
"Primary DNS server IP address",
|
|
NULL,
|
|
FIXED_LENGTH,
|
|
6,
|
|
dissect_ipcp_addr_opt
|
|
},
|
|
{
|
|
CI_MS_WINS1,
|
|
"Primary WINS server IP address",
|
|
NULL,
|
|
FIXED_LENGTH,
|
|
6,
|
|
dissect_ipcp_addr_opt
|
|
},
|
|
{
|
|
CI_MS_DNS2,
|
|
"Secondary DNS server IP address",
|
|
NULL,
|
|
FIXED_LENGTH,
|
|
6,
|
|
dissect_ipcp_addr_opt
|
|
},
|
|
{
|
|
CI_MS_WINS2,
|
|
"Secondary WINS server IP address",
|
|
NULL,
|
|
FIXED_LENGTH,
|
|
6,
|
|
dissect_ipcp_addr_opt
|
|
}
|
|
};
|
|
|
|
#define N_IPCP_OPTS (sizeof ipcp_opts / sizeof ipcp_opts[0])
|
|
|
|
/*
|
|
* Options. (CCP)
|
|
*/
|
|
#define CI_CCP_OUI 0 /* OUI (RFC1962) */
|
|
#define CI_CCP_PREDICT1 1 /* Predictor type 1 (RFC1962) */
|
|
#define CI_CCP_PREDICT2 2 /* Predictor type 2 (RFC1962) */
|
|
#define CI_CCP_PUDDLE 3 /* Puddle Jumper (RFC1962) */
|
|
#define CI_CCP_HPPPC 16 /* Hewlett-Packard PPC (RFC1962) */
|
|
#define CI_CCP_STAC 17 /* stac Electronics LZS (RFC1974) */
|
|
#define CI_CCP_MPPC 18 /* Microsoft PPC (RFC2218/3078) */
|
|
#define CI_CCP_GFZA 19 /* Gandalf FZA (RFC1962) */
|
|
#define CI_CCP_V42BIS 20 /* V.42bis compression */
|
|
#define CI_CCP_BSDLZW 21 /* BSD LZW Compress (RFC1977) */
|
|
#define CI_CCP_LZSDCP 23 /* LZS-DCP (RFC1967) */
|
|
#define CI_CCP_MVRCA 24 /* MVRCA (Magnalink) (RFC1975) */
|
|
#define CI_CCP_DEFLATE 26 /* Deflate (RFC1979) */
|
|
#define CI_CCP_RESERVED 255 /* Reserved (RFC1962) */
|
|
|
|
/*
|
|
* Microsoft Point-To-Point Compression (MPPC) and Encryption (MPPE)
|
|
* supported bits.
|
|
*/
|
|
#define MPPC_SUPPORTED_BITS_C 0x00000001 /* MPPC negotiation */
|
|
#define MPPE_SUPPORTED_BITS_D 0x00000010 /* Obsolete */
|
|
#define MPPE_SUPPORTED_BITS_L 0x00000020 /* 40-bit encryption */
|
|
#define MPPE_SUPPORTED_BITS_S 0x00000040 /* 128-bit encryption */
|
|
#define MPPE_SUPPORTED_BITS_M 0x00000080 /* 56-bit encryption */
|
|
#define MPPE_SUPPORTED_BITS_H 0x01000000 /* stateless mode */
|
|
|
|
static void dissect_ccp_stac_opt(const ip_tcp_opt *optp, tvbuff_t *tvb,
|
|
int offset, guint length, packet_info *pinfo,
|
|
proto_tree *tree);
|
|
|
|
static void dissect_ccp_mppc_opt(const ip_tcp_opt *optp, tvbuff_t *tvb,
|
|
int offset, guint length, packet_info *pinfo,
|
|
proto_tree *tree);
|
|
|
|
static void dissect_ccp_bsdcomp_opt(const ip_tcp_opt *optp, tvbuff_t *tvb,
|
|
int offset, guint length, packet_info *pinfo,
|
|
proto_tree *tree);
|
|
|
|
static void dissect_ccp_lzsdcp_opt(const ip_tcp_opt *optp, tvbuff_t *tvb,
|
|
int offset, guint length, packet_info *pinfo,
|
|
proto_tree *tree);
|
|
|
|
static void dissect_ccp_mvrca_opt(const ip_tcp_opt *optp, tvbuff_t *tvb,
|
|
int offset, guint length, packet_info *pinfo,
|
|
proto_tree *tree);
|
|
|
|
static void dissect_ccp_deflate_opt(const ip_tcp_opt *optp, tvbuff_t *tvb,
|
|
int offset, guint length, packet_info *pinfo,
|
|
proto_tree *tree);
|
|
|
|
static const ip_tcp_opt ccp_opts[] = {
|
|
{
|
|
CI_CCP_STAC,
|
|
"Stac Electronics LZS",
|
|
&ett_ccp_stac_opt,
|
|
VARIABLE_LENGTH,
|
|
5,
|
|
/* In RFC 1974, this is a fixed-length field of size 5,
|
|
but in Ascend Proprietary STAC compression this field
|
|
is 6 octets. Sigh... */
|
|
dissect_ccp_stac_opt
|
|
},
|
|
{
|
|
CI_CCP_MPPC,
|
|
"Microsoft PPC",
|
|
&ett_ccp_mppc_opt,
|
|
FIXED_LENGTH,
|
|
6,
|
|
dissect_ccp_mppc_opt
|
|
},
|
|
{
|
|
CI_CCP_BSDLZW,
|
|
"BSD Compress",
|
|
&ett_ccp_bsdcomp_opt,
|
|
FIXED_LENGTH,
|
|
3,
|
|
dissect_ccp_bsdcomp_opt
|
|
},
|
|
{
|
|
CI_CCP_LZSDCP,
|
|
"LZS-DCP",
|
|
&ett_ccp_lzsdcp_opt,
|
|
FIXED_LENGTH,
|
|
6,
|
|
dissect_ccp_lzsdcp_opt
|
|
},
|
|
{
|
|
CI_CCP_MVRCA,
|
|
"MVRCA (Magnalink)",
|
|
&ett_ccp_mvrca_opt,
|
|
FIXED_LENGTH,
|
|
4,
|
|
dissect_ccp_mvrca_opt
|
|
},
|
|
{
|
|
CI_CCP_DEFLATE,
|
|
"Deflate",
|
|
&ett_ccp_deflate_opt,
|
|
FIXED_LENGTH,
|
|
4, /* RFC1979 says the length is 3 but it's actually 4. */
|
|
dissect_ccp_deflate_opt
|
|
},
|
|
};
|
|
|
|
#define N_CCP_OPTS (sizeof ccp_opts / sizeof ccp_opts[0])
|
|
|
|
/*
|
|
* Options. (CBCP)
|
|
*/
|
|
#define CI_CBCP_NO_CALLBACK 1 /* No callback */
|
|
#define CI_CBCP_CB_USER 2 /* Callback to a user-specified number */
|
|
#define CI_CBCP_CB_PRE 3 /* Callback to a pre-specified or
|
|
administrator specified number */
|
|
#define CI_CBCP_CB_ANY 4 /* Callback to any of a list of numbers */
|
|
|
|
static void dissect_cbcp_no_callback_opt(const ip_tcp_opt *optp, tvbuff_t *tvb,
|
|
int offset, guint length, packet_info *pinfo,
|
|
proto_tree *tree);
|
|
|
|
static void dissect_cbcp_callback_opt(const ip_tcp_opt *optp, tvbuff_t *tvb,
|
|
int offset, guint length, packet_info *pinfo,
|
|
proto_tree *tree);
|
|
|
|
static const ip_tcp_opt cbcp_opts[] = {
|
|
{
|
|
CI_CBCP_NO_CALLBACK,
|
|
"No callback",
|
|
NULL,
|
|
FIXED_LENGTH,
|
|
2,
|
|
dissect_cbcp_no_callback_opt
|
|
},
|
|
{
|
|
CI_CBCP_CB_USER,
|
|
"Callback to a user-specified number",
|
|
&ett_cbcp_callback_opt,
|
|
VARIABLE_LENGTH,
|
|
4,
|
|
dissect_cbcp_callback_opt
|
|
},
|
|
{
|
|
CI_CBCP_CB_PRE,
|
|
"Callback to a pre-specified or admin-specified number",
|
|
&ett_cbcp_callback_opt,
|
|
FIXED_LENGTH,
|
|
3,
|
|
dissect_cbcp_callback_opt
|
|
},
|
|
{
|
|
CI_CBCP_CB_ANY,
|
|
"Callback to any of a list of numbers",
|
|
&ett_cbcp_callback_opt,
|
|
VARIABLE_LENGTH,
|
|
4,
|
|
dissect_cbcp_callback_opt
|
|
}
|
|
|
|
};
|
|
|
|
#define N_CBCP_OPTS (sizeof cbcp_opts / sizeof cbcp_opts[0])
|
|
|
|
/*
|
|
* Options. (BACP)
|
|
*/
|
|
#define CI_BACP_FAVORED_PEER 1 /* Favored-Peer */
|
|
|
|
static void dissect_bacp_favored_peer_opt(const ip_tcp_opt *optp, tvbuff_t *tvb,
|
|
int offset, guint length, packet_info *pinfo,
|
|
proto_tree *tree);
|
|
|
|
static const ip_tcp_opt bacp_opts[] = {
|
|
{
|
|
CI_BACP_FAVORED_PEER,
|
|
"Favored-Peer",
|
|
&ett_bacp_favored_peer_opt,
|
|
FIXED_LENGTH,
|
|
6,
|
|
dissect_bacp_favored_peer_opt
|
|
}
|
|
};
|
|
|
|
#define N_BACP_OPTS (sizeof bacp_opts / sizeof bacp_opts[0])
|
|
|
|
/*
|
|
* Options. (BAP)
|
|
*/
|
|
#define CI_BAP_LINK_TYPE 1 /* Link Type */
|
|
#define CI_BAP_PHONE_DELTA 2 /* Phone-Delta */
|
|
#define CI_BAP_NO_PHONE_NUM_NEEDED 3 /* No Phone Number Needed */
|
|
#define CI_BAP_REASON 4 /* Reason */
|
|
#define CI_BAP_LINK_DISC 5 /* Link Discriminator */
|
|
#define CI_BAP_CALL_STATUS 6 /* Call Status */
|
|
|
|
static void dissect_bap_link_type_opt(const ip_tcp_opt *optp, tvbuff_t *tvb,
|
|
int offset, guint length, packet_info *pinfo,
|
|
proto_tree *tree);
|
|
|
|
static void dissect_bap_phone_delta_opt(const ip_tcp_opt *optp, tvbuff_t *tvb,
|
|
int offset, guint length, packet_info *pinfo,
|
|
proto_tree *tree);
|
|
|
|
static void dissect_bap_link_disc_opt(const ip_tcp_opt *optp, tvbuff_t *tvb,
|
|
int offset, guint length, packet_info *pinfo,
|
|
proto_tree *tree);
|
|
|
|
static void dissect_bap_reason_opt(const ip_tcp_opt *optp, tvbuff_t *tvb,
|
|
int offset, guint length, packet_info *pinfo,
|
|
proto_tree *tree);
|
|
|
|
static void dissect_bap_call_status_opt(const ip_tcp_opt *optp, tvbuff_t *tvb,
|
|
int offset, guint length, packet_info *pinfo,
|
|
proto_tree *tree);
|
|
|
|
static const ip_tcp_opt bap_opts[] = {
|
|
{
|
|
CI_BAP_LINK_TYPE,
|
|
"Link Type",
|
|
&ett_bap_link_type_opt,
|
|
FIXED_LENGTH,
|
|
5,
|
|
dissect_bap_link_type_opt
|
|
},
|
|
{
|
|
CI_BAP_PHONE_DELTA,
|
|
"Phone Delta",
|
|
&ett_bap_phone_delta_opt,
|
|
VARIABLE_LENGTH,
|
|
4,
|
|
dissect_bap_phone_delta_opt
|
|
},
|
|
{
|
|
CI_BAP_NO_PHONE_NUM_NEEDED,
|
|
"No Phone Number Needed",
|
|
NULL,
|
|
FIXED_LENGTH,
|
|
2,
|
|
NULL
|
|
},
|
|
{
|
|
CI_BAP_REASON,
|
|
"Reason",
|
|
NULL,
|
|
VARIABLE_LENGTH,
|
|
2,
|
|
dissect_bap_reason_opt
|
|
},
|
|
{
|
|
CI_BAP_LINK_DISC,
|
|
"Link Discriminator",
|
|
NULL,
|
|
FIXED_LENGTH,
|
|
4,
|
|
dissect_bap_link_disc_opt
|
|
},
|
|
{
|
|
CI_BAP_CALL_STATUS,
|
|
"Call Status",
|
|
&ett_bap_call_status_opt,
|
|
FIXED_LENGTH,
|
|
4,
|
|
dissect_bap_call_status_opt
|
|
}
|
|
};
|
|
|
|
#define N_BAP_OPTS (sizeof bap_opts / sizeof bap_opts[0])
|
|
|
|
static void dissect_ppp(tvbuff_t *tvb, packet_info *pinfo,
|
|
proto_tree *tree);
|
|
|
|
static const value_string pap_vals[] = {
|
|
{CONFREQ, "Authenticate-Request" },
|
|
{CONFACK, "Authenticate-Ack" },
|
|
{CONFNAK, "Authenticate-Nak" },
|
|
{0, NULL } };
|
|
|
|
static void dissect_pap(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
|
|
|
|
#define CHAP_CHAL 1 /* CHAP Challenge */
|
|
#define CHAP_RESP 2 /* CHAP Response */
|
|
#define CHAP_SUCC 3 /* CHAP Success */
|
|
#define CHAP_FAIL 4 /* CHAP Failure */
|
|
|
|
static const value_string chap_vals[] = {
|
|
{CHAP_CHAL, "Challenge" },
|
|
{CHAP_RESP, "Response" },
|
|
{CHAP_SUCC, "Success" },
|
|
{CHAP_FAIL, "Failure" },
|
|
{0, NULL } };
|
|
|
|
static void dissect_chap(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
|
|
|
|
static const value_string pppmuxcp_vals[] = {
|
|
{CONFREQ, "Configuration Request" },
|
|
{CONFACK, "Configuration Ack" },
|
|
{0, NULL}
|
|
};
|
|
|
|
/*
|
|
* PPPMuxCP options
|
|
*/
|
|
|
|
#define CI_DEFAULT_PID 1
|
|
|
|
static void dissect_pppmuxcp_def_pid_opt(const ip_tcp_opt *optp, tvbuff_t *tvb,
|
|
int offset, guint length, packet_info *pinfo, proto_tree *tree);
|
|
|
|
|
|
static const ip_tcp_opt pppmuxcp_opts[] = {
|
|
{
|
|
CI_DEFAULT_PID,
|
|
"Default Protocol ID",
|
|
NULL,
|
|
FIXED_LENGTH,
|
|
4,
|
|
dissect_pppmuxcp_def_pid_opt
|
|
}
|
|
};
|
|
|
|
#define N_PPPMUXCP_OPTS (sizeof pppmuxcp_opts / sizeof pppmuxcp_opts[0])
|
|
|
|
/*
|
|
* Options. (IPv6CP)
|
|
*/
|
|
#define CI_IPV6CP_IF_ID 1 /* Interface Identifier (RFC 2472) */
|
|
#define CI_IPV6CP_COMPRESSTYPE 2 /* Compression Type (RFC 2472) */
|
|
|
|
static void dissect_ipv6cp_if_id_opt(const ip_tcp_opt *optp, tvbuff_t *tvb,
|
|
int offset, guint length, packet_info *pinfo,
|
|
proto_tree *tree);
|
|
|
|
static const ip_tcp_opt ipv6cp_opts[] = {
|
|
{
|
|
CI_IPV6CP_IF_ID,
|
|
"Interface Identifier",
|
|
&ett_ipv6cp_if_id_opt,
|
|
FIXED_LENGTH,
|
|
10,
|
|
dissect_ipv6cp_if_id_opt
|
|
},
|
|
{
|
|
CI_COMPRESSTYPE,
|
|
"IPv6 compression protocol",
|
|
&ett_ipcp_compressprot_opt,
|
|
VARIABLE_LENGTH,
|
|
4,
|
|
dissect_lcp_protocol_opt
|
|
},
|
|
};
|
|
|
|
#define N_IPV6CP_OPTS (sizeof ipv6cp_opts / sizeof ipv6cp_opts[0])
|
|
|
|
static const unsigned short fcstab_16[256] = {
|
|
0x0000, 0x1189, 0x2312, 0x329b, 0x4624, 0x57ad, 0x6536, 0x74bf,
|
|
0x8c48, 0x9dc1, 0xaf5a, 0xbed3, 0xca6c, 0xdbe5, 0xe97e, 0xf8f7,
|
|
0x1081, 0x0108, 0x3393, 0x221a, 0x56a5, 0x472c, 0x75b7, 0x643e,
|
|
0x9cc9, 0x8d40, 0xbfdb, 0xae52, 0xdaed, 0xcb64, 0xf9ff, 0xe876,
|
|
0x2102, 0x308b, 0x0210, 0x1399, 0x6726, 0x76af, 0x4434, 0x55bd,
|
|
0xad4a, 0xbcc3, 0x8e58, 0x9fd1, 0xeb6e, 0xfae7, 0xc87c, 0xd9f5,
|
|
0x3183, 0x200a, 0x1291, 0x0318, 0x77a7, 0x662e, 0x54b5, 0x453c,
|
|
0xbdcb, 0xac42, 0x9ed9, 0x8f50, 0xfbef, 0xea66, 0xd8fd, 0xc974,
|
|
0x4204, 0x538d, 0x6116, 0x709f, 0x0420, 0x15a9, 0x2732, 0x36bb,
|
|
0xce4c, 0xdfc5, 0xed5e, 0xfcd7, 0x8868, 0x99e1, 0xab7a, 0xbaf3,
|
|
0x5285, 0x430c, 0x7197, 0x601e, 0x14a1, 0x0528, 0x37b3, 0x263a,
|
|
0xdecd, 0xcf44, 0xfddf, 0xec56, 0x98e9, 0x8960, 0xbbfb, 0xaa72,
|
|
0x6306, 0x728f, 0x4014, 0x519d, 0x2522, 0x34ab, 0x0630, 0x17b9,
|
|
0xef4e, 0xfec7, 0xcc5c, 0xddd5, 0xa96a, 0xb8e3, 0x8a78, 0x9bf1,
|
|
0x7387, 0x620e, 0x5095, 0x411c, 0x35a3, 0x242a, 0x16b1, 0x0738,
|
|
0xffcf, 0xee46, 0xdcdd, 0xcd54, 0xb9eb, 0xa862, 0x9af9, 0x8b70,
|
|
0x8408, 0x9581, 0xa71a, 0xb693, 0xc22c, 0xd3a5, 0xe13e, 0xf0b7,
|
|
0x0840, 0x19c9, 0x2b52, 0x3adb, 0x4e64, 0x5fed, 0x6d76, 0x7cff,
|
|
0x9489, 0x8500, 0xb79b, 0xa612, 0xd2ad, 0xc324, 0xf1bf, 0xe036,
|
|
0x18c1, 0x0948, 0x3bd3, 0x2a5a, 0x5ee5, 0x4f6c, 0x7df7, 0x6c7e,
|
|
0xa50a, 0xb483, 0x8618, 0x9791, 0xe32e, 0xf2a7, 0xc03c, 0xd1b5,
|
|
0x2942, 0x38cb, 0x0a50, 0x1bd9, 0x6f66, 0x7eef, 0x4c74, 0x5dfd,
|
|
0xb58b, 0xa402, 0x9699, 0x8710, 0xf3af, 0xe226, 0xd0bd, 0xc134,
|
|
0x39c3, 0x284a, 0x1ad1, 0x0b58, 0x7fe7, 0x6e6e, 0x5cf5, 0x4d7c,
|
|
0xc60c, 0xd785, 0xe51e, 0xf497, 0x8028, 0x91a1, 0xa33a, 0xb2b3,
|
|
0x4a44, 0x5bcd, 0x6956, 0x78df, 0x0c60, 0x1de9, 0x2f72, 0x3efb,
|
|
0xd68d, 0xc704, 0xf59f, 0xe416, 0x90a9, 0x8120, 0xb3bb, 0xa232,
|
|
0x5ac5, 0x4b4c, 0x79d7, 0x685e, 0x1ce1, 0x0d68, 0x3ff3, 0x2e7a,
|
|
0xe70e, 0xf687, 0xc41c, 0xd595, 0xa12a, 0xb0a3, 0x8238, 0x93b1,
|
|
0x6b46, 0x7acf, 0x4854, 0x59dd, 0x2d62, 0x3ceb, 0x0e70, 0x1ff9,
|
|
0xf78f, 0xe606, 0xd49d, 0xc514, 0xb1ab, 0xa022, 0x92b9, 0x8330,
|
|
0x7bc7, 0x6a4e, 0x58d5, 0x495c, 0x3de3, 0x2c6a, 0x1ef1, 0x0f78
|
|
};
|
|
|
|
/*
|
|
*******************************************************************************
|
|
* DETAILS : Calculate a new FCS-16 given the current FCS-16 and the new data.
|
|
*******************************************************************************
|
|
*/
|
|
static guint16
|
|
fcs16(register guint16 fcs, tvbuff_t * tvbuff)
|
|
{
|
|
int offset = 0;
|
|
guint len = tvb_length(tvbuff)-2;
|
|
guint8 val;
|
|
|
|
/* Check for Invalid Length */
|
|
if (len == 0)
|
|
return (0x0000);
|
|
while (len--) {
|
|
val = tvb_get_guint8(tvbuff, offset++);
|
|
fcs = (guint16)((fcs >> 8) & 0x00ff) ^
|
|
fcstab_16[((guint16)(fcs ^ (guint16)((val) & 0x00ff)) & 0x00ff)];
|
|
}
|
|
|
|
return (fcs ^ 0xffff);
|
|
}
|
|
|
|
/*
|
|
*******************************************************************************
|
|
* DETAILS : Calculate a new FCS-32 given the current FCS-32 and the new data.
|
|
*******************************************************************************
|
|
*/
|
|
static guint32
|
|
fcs32(tvbuff_t * tvbuff)
|
|
{
|
|
guint len = tvb_length(tvbuff)-4;
|
|
|
|
/* Check for invalid Length */
|
|
if (len == 0)
|
|
return (0x00000000);
|
|
return crc32_tvb(tvbuff, len);
|
|
}
|
|
|
|
tvbuff_t *
|
|
decode_fcs(tvbuff_t *tvb, proto_tree *fh_tree, int fcs_decode, int proto_offset)
|
|
{
|
|
tvbuff_t *next_tvb;
|
|
gint len, reported_len;
|
|
int rx_fcs_offset;
|
|
guint32 rx_fcs_exp;
|
|
guint32 rx_fcs_got;
|
|
|
|
/*
|
|
* Remove the FCS, if any, from the packet data.
|
|
*/
|
|
switch (fcs_decode) {
|
|
|
|
case NO_FCS:
|
|
next_tvb = tvb_new_subset(tvb, proto_offset, -1, -1);
|
|
break;
|
|
|
|
case FCS_16:
|
|
/*
|
|
* Do we have the entire packet, and does it include a 2-byte FCS?
|
|
*/
|
|
len = tvb_length_remaining(tvb, proto_offset);
|
|
reported_len = tvb_reported_length_remaining(tvb, proto_offset);
|
|
if (reported_len < 2 || len < 0) {
|
|
/*
|
|
* The packet is claimed not to even have enough data for a 2-byte FCS,
|
|
* or we're already past the end of the captured data.
|
|
* Don't slice anything off.
|
|
*/
|
|
next_tvb = tvb_new_subset(tvb, proto_offset, -1, -1);
|
|
} else if (len < reported_len) {
|
|
/*
|
|
* The packet is claimed to have enough data for a 2-byte FCS, but
|
|
* we didn't capture all of the packet.
|
|
* Slice off the 2-byte FCS from the reported length, and trim the
|
|
* captured length so it's no more than the reported length; that
|
|
* will slice off what of the FCS, if any, is in the captured
|
|
* length.
|
|
*/
|
|
reported_len -= 2;
|
|
if (len > reported_len)
|
|
len = reported_len;
|
|
next_tvb = tvb_new_subset(tvb, proto_offset, len, reported_len);
|
|
} else {
|
|
/*
|
|
* We have the entire packet, and it includes a 2-byte FCS.
|
|
* Slice it off.
|
|
*/
|
|
len -= 2;
|
|
reported_len -= 2;
|
|
next_tvb = tvb_new_subset(tvb, proto_offset, len, reported_len);
|
|
|
|
/*
|
|
* Compute the FCS and put it into the tree.
|
|
*/
|
|
rx_fcs_offset = proto_offset + len;
|
|
rx_fcs_exp = fcs16(0xFFFF, tvb);
|
|
rx_fcs_got = tvb_get_letohs(tvb, rx_fcs_offset);
|
|
if (rx_fcs_got != rx_fcs_exp) {
|
|
proto_tree_add_text(fh_tree, tvb, rx_fcs_offset, 2,
|
|
"FCS 16: 0x%04x (incorrect, should be 0x%04x)",
|
|
rx_fcs_got, rx_fcs_exp);
|
|
} else {
|
|
proto_tree_add_text(fh_tree, tvb, rx_fcs_offset, 2,
|
|
"FCS 16: 0x%04x (correct)",
|
|
rx_fcs_got);
|
|
}
|
|
}
|
|
break;
|
|
|
|
case FCS_32:
|
|
/*
|
|
* Do we have the entire packet, and does it include a 4-byte FCS?
|
|
*/
|
|
len = tvb_length_remaining(tvb, proto_offset);
|
|
reported_len = tvb_reported_length_remaining(tvb, proto_offset);
|
|
if (reported_len < 4) {
|
|
/*
|
|
* The packet is claimed not to even have enough data for a 4-byte FCS.
|
|
* Just pass on the tvbuff as is.
|
|
*/
|
|
next_tvb = tvb_new_subset(tvb, proto_offset, -1, -1);
|
|
} else if (len < reported_len) {
|
|
/*
|
|
* The packet is claimed to have enough data for a 4-byte FCS, but
|
|
* we didn't capture all of the packet.
|
|
* Slice off the 4-byte FCS from the reported length, and trim the
|
|
* captured length so it's no more than the reported length; that
|
|
* will slice off what of the FCS, if any, is in the captured
|
|
* length.
|
|
*/
|
|
reported_len -= 4;
|
|
if (len > reported_len)
|
|
len = reported_len;
|
|
next_tvb = tvb_new_subset(tvb, proto_offset, len, reported_len);
|
|
} else {
|
|
/*
|
|
* We have the entire packet, and it includes a 4-byte FCS.
|
|
* Slice it off.
|
|
*/
|
|
len -= 4;
|
|
reported_len -= 4;
|
|
next_tvb = tvb_new_subset(tvb, proto_offset, len, reported_len);
|
|
|
|
/*
|
|
* Compute the FCS and put it into the tree.
|
|
*/
|
|
rx_fcs_offset = proto_offset + len;
|
|
rx_fcs_exp = fcs32(tvb);
|
|
rx_fcs_got = tvb_get_letohl(tvb, rx_fcs_offset);
|
|
if (rx_fcs_got != rx_fcs_exp) {
|
|
proto_tree_add_text(fh_tree, tvb, rx_fcs_offset, 4,
|
|
"FCS 32: 0x%08x (incorrect, should be 0x%08x)",
|
|
rx_fcs_got, rx_fcs_exp);
|
|
} else {
|
|
proto_tree_add_text(fh_tree, tvb, rx_fcs_offset, 4,
|
|
"FCS 32: 0x%08x (correct)",
|
|
rx_fcs_got);
|
|
}
|
|
}
|
|
break;
|
|
|
|
default:
|
|
g_assert_not_reached();
|
|
next_tvb = NULL;
|
|
}
|
|
|
|
return next_tvb;
|
|
}
|
|
|
|
void
|
|
capture_ppp_hdlc( const guchar *pd, int offset, int len, packet_counts *ld ) {
|
|
if (!BYTES_ARE_IN_FRAME(offset, len, 2)) {
|
|
ld->other++;
|
|
return;
|
|
}
|
|
if (pd[0] == CHDLC_ADDR_UNICAST || pd[0] == CHDLC_ADDR_MULTICAST) {
|
|
capture_chdlc(pd, offset, len, ld);
|
|
return;
|
|
}
|
|
if (!BYTES_ARE_IN_FRAME(offset, len, 4)) {
|
|
ld->other++;
|
|
return;
|
|
}
|
|
switch (pntohs(&pd[offset + 2])) {
|
|
case PPP_IP:
|
|
capture_ip(pd, offset + 4, len, ld);
|
|
break;
|
|
case PPP_IPX:
|
|
capture_ipx(ld);
|
|
break;
|
|
case PPP_VINES:
|
|
capture_vines(ld);
|
|
break;
|
|
default:
|
|
ld->other++;
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
dissect_lcp_mru_opt(const ip_tcp_opt *optp, tvbuff_t *tvb, int offset,
|
|
guint length, packet_info *pinfo _U_,
|
|
proto_tree *tree)
|
|
{
|
|
proto_tree_add_text(tree, tvb, offset, length, "%s: %u", optp->name,
|
|
tvb_get_ntohs(tvb, offset + 2));
|
|
}
|
|
|
|
static void
|
|
dissect_lcp_async_map_opt(const ip_tcp_opt *optp, tvbuff_t *tvb, int offset,
|
|
guint length, packet_info *pinfo _U_,
|
|
proto_tree *tree)
|
|
{
|
|
guint32 map;
|
|
char *mapstr;
|
|
static const char *ctrlchars[32] = {
|
|
"NUL", "SOH", "STX", "ETX", "EOT", "ENQ", "ACK", "BEL",
|
|
"BS", "HT", "NL", "VT", "NP (FF)", "CR", "SO", "SI",
|
|
"DLE", "DC1 (XON)", "DC2", "DC3 (XOFF)", "DC4", "NAK", "SYN", "ETB",
|
|
"CAN", "EM", "SUB", "ESC", "FS", "GS", "RS", "US"
|
|
};
|
|
char mapbuf[32*(10+2)+1];
|
|
char *mapp;
|
|
int i;
|
|
|
|
/*
|
|
* XXX - walk through the map and show the characters to map?
|
|
* Put them in a subtree of this item, and have the top-level item
|
|
* either say "None", "All", or give a list of the characters?)
|
|
*/
|
|
map = tvb_get_ntohl(tvb, offset + 2);
|
|
if (map == 0x00000000)
|
|
mapstr = "None"; /* don't map any control characters */
|
|
else if (map == 0xffffffff)
|
|
mapstr = "All"; /* map all control characters */
|
|
else {
|
|
/*
|
|
* Show the names of the control characters being mapped.
|
|
*/
|
|
mapp = &mapbuf[0];
|
|
for (i = 0; i < 32; i++) {
|
|
if (map & (1 << i)) {
|
|
if (mapp != &mapbuf[0]) {
|
|
strcpy(mapp, ", ");
|
|
mapp += 2;
|
|
}
|
|
strcpy(mapp, ctrlchars[i]);
|
|
mapp += strlen(ctrlchars[i]);
|
|
}
|
|
}
|
|
mapstr = mapbuf;
|
|
}
|
|
proto_tree_add_text(tree, tvb, offset, length, "%s: 0x%08x (%s)", optp->name,
|
|
map, mapstr);
|
|
}
|
|
|
|
static void
|
|
dissect_lcp_protocol_opt(const ip_tcp_opt *optp, tvbuff_t *tvb, int offset,
|
|
guint length, packet_info *pinfo _U_,
|
|
proto_tree *tree)
|
|
{
|
|
guint16 protocol;
|
|
proto_item *tf;
|
|
proto_tree *field_tree = NULL;
|
|
|
|
tf = proto_tree_add_text(tree, tvb, offset, length, "%s: %u byte%s",
|
|
optp->name, length, plurality(length, "", "s"));
|
|
field_tree = proto_item_add_subtree(tf, *optp->subtree_index);
|
|
offset += 2;
|
|
length -= 2;
|
|
protocol = tvb_get_ntohs(tvb, offset);
|
|
proto_tree_add_text(field_tree, tvb, offset, 2, "%s: %s (0x%02x)", optp->name,
|
|
val_to_str(protocol, ppp_vals, "Unknown"), protocol);
|
|
offset += 2;
|
|
length -= 2;
|
|
if (length > 0)
|
|
proto_tree_add_text(field_tree, tvb, offset, length, "Data (%d byte%s)", length,
|
|
plurality(length, "", "s"));
|
|
}
|
|
|
|
static void
|
|
dissect_lcp_authprot_opt(const ip_tcp_opt *optp, tvbuff_t *tvb, int offset,
|
|
guint length, packet_info *pinfo _U_,
|
|
proto_tree *tree)
|
|
{
|
|
guint16 protocol;
|
|
guint8 algorithm;
|
|
proto_item *tf;
|
|
proto_tree *field_tree = NULL;
|
|
|
|
tf = proto_tree_add_text(tree, tvb, offset, length, "%s: %u byte%s",
|
|
optp->name, length, plurality(length, "", "s"));
|
|
field_tree = proto_item_add_subtree(tf, *optp->subtree_index);
|
|
offset += 2;
|
|
length -= 2;
|
|
protocol = tvb_get_ntohs(tvb, offset);
|
|
proto_tree_add_text(field_tree, tvb, offset, 2, "%s: %s (0x%02x)", optp->name,
|
|
val_to_str(protocol, ppp_vals, "Unknown"), protocol);
|
|
offset += 2;
|
|
length -= 2;
|
|
if (length > 0) {
|
|
if (protocol == PPP_CHAP) {
|
|
algorithm = tvb_get_guint8(tvb, offset);
|
|
proto_tree_add_text(field_tree, tvb, offset, length,
|
|
"Algorithm: %s (0x%02x)",
|
|
val_to_str(algorithm, chap_alg_vals, "Unknown"),
|
|
algorithm);
|
|
offset++;
|
|
} else {
|
|
proto_tree_add_text(field_tree, tvb, offset, length, "Data (%d byte%s)", length,
|
|
plurality(length, "", "s"));
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
dissect_lcp_magicnumber_opt(const ip_tcp_opt *optp, tvbuff_t *tvb,
|
|
int offset, guint length, packet_info *pinfo _U_,
|
|
proto_tree *tree)
|
|
{
|
|
proto_tree_add_text(tree, tvb, offset, length, "%s: 0x%08x", optp->name,
|
|
tvb_get_ntohl(tvb, offset + 2));
|
|
}
|
|
|
|
static void
|
|
dissect_lcp_fcs_alternatives_opt(const ip_tcp_opt *optp, tvbuff_t *tvb,
|
|
int offset, guint length, packet_info *pinfo _U_,
|
|
proto_tree *tree)
|
|
{
|
|
proto_item *tf;
|
|
proto_tree *field_tree = NULL;
|
|
guint8 alternatives;
|
|
|
|
alternatives = tvb_get_guint8(tvb, offset + 2);
|
|
tf = proto_tree_add_text(tree, tvb, offset, length, "%s: 0x%02x",
|
|
optp->name, alternatives);
|
|
field_tree = proto_item_add_subtree(tf, *optp->subtree_index);
|
|
offset += 2;
|
|
if (alternatives & 0x1)
|
|
proto_tree_add_text(field_tree, tvb, offset + 2, 1, "%s",
|
|
decode_boolean_bitfield(alternatives, 0x1, 8, "Null FCS", NULL));
|
|
if (alternatives & 0x2)
|
|
proto_tree_add_text(field_tree, tvb, offset + 2, 1, "%s",
|
|
decode_boolean_bitfield(alternatives, 0x2, 8, "CCITT 16-bit FCS", NULL));
|
|
if (alternatives & 0x4)
|
|
proto_tree_add_text(field_tree, tvb, offset + 2, 1, "%s",
|
|
decode_boolean_bitfield(alternatives, 0x4, 8, "CCITT 32-bit FCS", NULL));
|
|
}
|
|
|
|
static void
|
|
dissect_lcp_self_describing_pad_opt(const ip_tcp_opt *optp, tvbuff_t *tvb,
|
|
int offset, guint length, packet_info *pinfo _U_,
|
|
proto_tree *tree)
|
|
{
|
|
proto_tree_add_text(tree, tvb, offset, length, "%s: %u", optp->name,
|
|
tvb_get_guint8(tvb, offset + 2));
|
|
}
|
|
|
|
static void
|
|
dissect_lcp_numbered_mode_opt(const ip_tcp_opt *optp, tvbuff_t *tvb,
|
|
int offset, guint length, packet_info *pinfo _U_,
|
|
proto_tree *tree)
|
|
{
|
|
proto_item *tf;
|
|
proto_tree *field_tree = NULL;
|
|
|
|
tf = proto_tree_add_text(tree, tvb, offset, length, "%s: %u byte%s",
|
|
optp->name, length, plurality(length, "", "s"));
|
|
field_tree = proto_item_add_subtree(tf, *optp->subtree_index);
|
|
offset += 2;
|
|
length -= 2;
|
|
proto_tree_add_text(field_tree, tvb, offset, 1, "Window: %u",
|
|
tvb_get_guint8(tvb, offset));
|
|
offset += 1;
|
|
length -= 1;
|
|
if (length > 0)
|
|
proto_tree_add_text(field_tree, tvb, offset, length, "Address (%d byte%s)",
|
|
length, plurality(length, "", "s"));
|
|
}
|
|
|
|
static const value_string callback_op_vals[] = {
|
|
{0, "Location is determined by user authentication" },
|
|
{1, "Message is dialing string" },
|
|
{2, "Message is location identifier" },
|
|
{3, "Message is E.164" },
|
|
{4, "Message is distinguished name" },
|
|
{5, "unassigned"},
|
|
{6, "Location is determined during CBCP negotiation" },
|
|
{0, NULL }
|
|
};
|
|
|
|
static void
|
|
dissect_lcp_callback_opt(const ip_tcp_opt *optp, tvbuff_t *tvb, int offset,
|
|
guint length, packet_info *pinfo _U_,
|
|
proto_tree *tree)
|
|
{
|
|
proto_item *tf;
|
|
proto_tree *field_tree = NULL;
|
|
guint8 operation;
|
|
|
|
tf = proto_tree_add_text(tree, tvb, offset, length, "%s: %u byte%s",
|
|
optp->name, length, plurality(length, "", "s"));
|
|
field_tree = proto_item_add_subtree(tf, *optp->subtree_index);
|
|
offset += 2;
|
|
length -= 2;
|
|
operation = tvb_get_guint8(tvb, offset);
|
|
proto_tree_add_text(field_tree, tvb, offset, 1, "Operation: %s (0x%02x)",
|
|
val_to_str(operation, callback_op_vals, "Unknown"),
|
|
operation);
|
|
offset += 1;
|
|
length -= 1;
|
|
if (length > 0)
|
|
proto_tree_add_text(field_tree, tvb, offset, length, "Message (%d byte%s)",
|
|
length, plurality(length, "", "s"));
|
|
}
|
|
|
|
static void
|
|
dissect_lcp_multilink_mrru_opt(const ip_tcp_opt *optp, tvbuff_t *tvb,
|
|
int offset, guint length, packet_info *pinfo _U_,
|
|
proto_tree *tree)
|
|
{
|
|
proto_tree_add_text(tree, tvb, offset, length, "%s: %u", optp->name,
|
|
tvb_get_ntohs(tvb, offset + 2));
|
|
}
|
|
|
|
#define CLASS_NULL 0
|
|
#define CLASS_LOCAL 1
|
|
#define CLASS_IP 2
|
|
#define CLASS_IEEE_802_1 3
|
|
#define CLASS_PPP_MAGIC_NUMBER 4
|
|
#define CLASS_PSDN_DIRECTORY_NUMBER 5
|
|
|
|
static const value_string multilink_ep_disc_class_vals[] = {
|
|
{CLASS_NULL, "Null" },
|
|
{CLASS_LOCAL, "Locally assigned address" },
|
|
{CLASS_IP, "IP address" },
|
|
{CLASS_IEEE_802_1, "IEEE 802.1 globally assigned MAC address" },
|
|
{CLASS_PPP_MAGIC_NUMBER, "PPP magic-number block" },
|
|
{CLASS_PSDN_DIRECTORY_NUMBER, "Public switched network directory number" },
|
|
{0, NULL }
|
|
};
|
|
|
|
static void
|
|
dissect_lcp_multilink_ep_disc_opt(const ip_tcp_opt *optp, tvbuff_t *tvb,
|
|
int offset, guint length, packet_info *pinfo _U_,
|
|
proto_tree *tree)
|
|
{
|
|
proto_item *tf;
|
|
proto_tree *field_tree = NULL;
|
|
guint8 ep_disc_class;
|
|
|
|
tf = proto_tree_add_text(tree, tvb, offset, length, "%s: %u byte%s",
|
|
optp->name, length, plurality(length, "", "s"));
|
|
field_tree = proto_item_add_subtree(tf, *optp->subtree_index);
|
|
offset += 2;
|
|
length -= 2;
|
|
ep_disc_class = tvb_get_guint8(tvb, offset);
|
|
proto_tree_add_text(field_tree, tvb, offset, 1, "Class: %s (%u)",
|
|
val_to_str(ep_disc_class, multilink_ep_disc_class_vals, "Unknown"),
|
|
ep_disc_class);
|
|
offset += 1;
|
|
length -= 1;
|
|
if (length > 0) {
|
|
switch (ep_disc_class) {
|
|
|
|
case CLASS_NULL:
|
|
proto_tree_add_text(field_tree, tvb, offset, length,
|
|
"Address (%d byte%s), should have been empty",
|
|
length, plurality(length, "", "s"));
|
|
break;
|
|
|
|
case CLASS_LOCAL:
|
|
if (length > 20) {
|
|
proto_tree_add_text(field_tree, tvb, offset, length,
|
|
"Address (%d byte%s), should have been <20",
|
|
length, plurality(length, "", "s"));
|
|
} else {
|
|
proto_tree_add_text(field_tree, tvb, offset, length,
|
|
"Address (%d byte%s)",
|
|
length, plurality(length, "", "s"));
|
|
}
|
|
break;
|
|
|
|
case CLASS_IP:
|
|
if (length != 4) {
|
|
proto_tree_add_text(field_tree, tvb, offset, length,
|
|
"Address (%d byte%s), should have been 4",
|
|
length, plurality(length, "", "s"));
|
|
} else {
|
|
proto_tree_add_text(field_tree, tvb, offset, length,
|
|
"Address: %s", ip_to_str(tvb_get_ptr(tvb, offset, 4)));
|
|
}
|
|
break;
|
|
|
|
case CLASS_IEEE_802_1:
|
|
if (length != 6) {
|
|
proto_tree_add_text(field_tree, tvb, offset, length,
|
|
"Address (%d byte%s), should have been 6",
|
|
length, plurality(length, "", "s"));
|
|
} else {
|
|
proto_tree_add_text(field_tree, tvb, offset, length,
|
|
"Address: %s", ether_to_str(tvb_get_ptr(tvb, offset, 6)));
|
|
}
|
|
break;
|
|
|
|
case CLASS_PPP_MAGIC_NUMBER:
|
|
/* XXX - dissect as 32-bit magic numbers */
|
|
if (length > 20) {
|
|
proto_tree_add_text(field_tree, tvb, offset, length,
|
|
"Address (%d byte%s), should have been <20",
|
|
length, plurality(length, "", "s"));
|
|
} else {
|
|
proto_tree_add_text(field_tree, tvb, offset, length,
|
|
"Address (%d byte%s)",
|
|
length, plurality(length, "", "s"));
|
|
}
|
|
break;
|
|
|
|
case CLASS_PSDN_DIRECTORY_NUMBER:
|
|
if (length > 15) {
|
|
proto_tree_add_text(field_tree, tvb, offset, length,
|
|
"Address (%d byte%s), should have been <20",
|
|
length, plurality(length, "", "s"));
|
|
} else {
|
|
proto_tree_add_text(field_tree, tvb, offset, length,
|
|
"Address (%d byte%s)",
|
|
length, plurality(length, "", "s"));
|
|
}
|
|
break;
|
|
|
|
default:
|
|
proto_tree_add_text(field_tree, tvb, offset, length,
|
|
"Address (%d byte%s)",
|
|
length, plurality(length, "", "s"));
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
dissect_lcp_bap_link_discriminator_opt(const ip_tcp_opt *optp, tvbuff_t *tvb,
|
|
int offset, guint length, packet_info *pinfo _U_,
|
|
proto_tree *tree)
|
|
{
|
|
proto_tree_add_text(tree, tvb, offset, length,
|
|
"%s: 0x%04x", optp->name,
|
|
tvb_get_ntohs(tvb, offset + 2));
|
|
}
|
|
|
|
/* Character set numbers from the IANA charset registry. */
|
|
static const value_string charset_num_vals[] = {
|
|
{105, "UTF-8" },
|
|
{0, NULL }
|
|
};
|
|
|
|
static void
|
|
dissect_lcp_internationalization_opt(const ip_tcp_opt *optp, tvbuff_t *tvb,
|
|
int offset, guint length, packet_info *pinfo _U_,
|
|
proto_tree *tree)
|
|
{
|
|
proto_item *tf;
|
|
proto_tree *field_tree = NULL;
|
|
guint32 charset;
|
|
|
|
tf = proto_tree_add_text(tree, tvb, offset, length, "%s: %u byte%s",
|
|
optp->name, length, plurality(length, "", "s"));
|
|
field_tree = proto_item_add_subtree(tf, *optp->subtree_index);
|
|
offset += 2;
|
|
length -= 2;
|
|
charset = tvb_get_ntohl(tvb, offset);
|
|
proto_tree_add_text(field_tree, tvb, offset, 4, "Character set: %s (0x%04x)",
|
|
val_to_str(charset, charset_num_vals, "Unknown"),
|
|
charset);
|
|
offset += 4;
|
|
length -= 4;
|
|
if (length > 0) {
|
|
/* XXX - should be displayed as an ASCII string */
|
|
proto_tree_add_text(field_tree, tvb, offset, length, "Language tag (%d byte%s)",
|
|
length, plurality(length, "", "s"));
|
|
}
|
|
}
|
|
|
|
static void
|
|
dissect_ipcp_addrs_opt(const ip_tcp_opt *optp, tvbuff_t *tvb,
|
|
int offset, guint length, packet_info *pinfo _U_,
|
|
proto_tree *tree)
|
|
{
|
|
proto_item *tf;
|
|
proto_tree *field_tree = NULL;
|
|
|
|
tf = proto_tree_add_text(tree, tvb, offset, length, "%s: %u byte%s",
|
|
optp->name, length, plurality(length, "", "s"));
|
|
field_tree = proto_item_add_subtree(tf, *optp->subtree_index);
|
|
offset += 2;
|
|
length -= 2;
|
|
proto_tree_add_text(field_tree, tvb, offset, 4,
|
|
"Source IP address: %s",
|
|
ip_to_str(tvb_get_ptr(tvb, offset, 4)));
|
|
offset += 4;
|
|
length -= 4;
|
|
proto_tree_add_text(field_tree, tvb, offset, 4,
|
|
"Destination IP address: %s",
|
|
ip_to_str(tvb_get_ptr(tvb, offset, 4)));
|
|
}
|
|
|
|
static void dissect_ipcp_addr_opt(const ip_tcp_opt *optp, tvbuff_t *tvb,
|
|
int offset, guint length, packet_info *pinfo _U_,
|
|
proto_tree *tree)
|
|
{
|
|
proto_tree_add_text(tree, tvb, offset, length, "%s: %s", optp->name,
|
|
ip_to_str(tvb_get_ptr(tvb, offset + 2, 4)));
|
|
}
|
|
|
|
static void dissect_pppmuxcp_def_pid_opt(const ip_tcp_opt *optp, tvbuff_t *tvb,
|
|
int offset, guint length, packet_info *pinfo _U_,
|
|
proto_tree *tree)
|
|
{
|
|
pppmux_def_prot_id = tvb_get_ntohs(tvb, offset + 2);
|
|
proto_tree_add_text(tree, tvb, offset + 2, length - 2, "%s: %s (0x%02x)",optp->name,
|
|
val_to_str(pppmux_def_prot_id, ppp_vals, "Unknown"), pppmux_def_prot_id);
|
|
}
|
|
|
|
|
|
static void
|
|
dissect_ccp_stac_opt(const ip_tcp_opt *optp, tvbuff_t *tvb,
|
|
int offset, guint length, packet_info *pinfo _U_,
|
|
proto_tree *tree)
|
|
{
|
|
proto_item *tf;
|
|
proto_tree *field_tree;
|
|
guint8 check_mode;
|
|
|
|
if (length == 6) {
|
|
proto_tree_add_text(tree, tvb, offset, length,
|
|
"%s (Ascend Proprietary version)", optp->name);
|
|
/* We don't know how to decode the following 4 octets, since
|
|
there's no public document that describe their usage. */
|
|
} else {
|
|
tf = proto_tree_add_text(tree, tvb, offset, length, "%s", optp->name);
|
|
field_tree = proto_item_add_subtree(tf, *optp->subtree_index);
|
|
|
|
proto_tree_add_text(field_tree, tvb, offset + 2, 2,
|
|
"History Count: %u", tvb_get_ntohs(tvb, offset + 2));
|
|
check_mode = tvb_get_guint8(tvb, offset + 4);
|
|
proto_tree_add_text(field_tree, tvb, offset + 4, 1,
|
|
"Check Mode: %s (0x%02X)",
|
|
val_to_str(check_mode, stac_checkmode_vals, "Unknown"),
|
|
check_mode);
|
|
}
|
|
}
|
|
|
|
static void
|
|
dissect_ccp_mppc_opt(const ip_tcp_opt *optp, tvbuff_t *tvb,
|
|
int offset, guint length, packet_info *pinfo _U_,
|
|
proto_tree *tree)
|
|
{
|
|
proto_item *tf;
|
|
proto_tree *flags_tree;
|
|
guint32 supported_bits;
|
|
|
|
supported_bits = tvb_get_ntohl(tvb, offset + 2);
|
|
tf = proto_tree_add_text(tree, tvb, offset, length,
|
|
"%s: Supported Bits: 0x%08X", optp->name, supported_bits);
|
|
flags_tree = proto_item_add_subtree(tf, *optp->subtree_index);
|
|
proto_tree_add_text(flags_tree, tvb, offset + 2, 4, "%s",
|
|
decode_boolean_bitfield(supported_bits, MPPC_SUPPORTED_BITS_C, 8*4,
|
|
"Desire to negotiate MPPC", "NO Desire to negotiate MPPC"));
|
|
proto_tree_add_text(flags_tree, tvb, offset + 2, 4, "%s",
|
|
decode_boolean_bitfield(supported_bits, MPPE_SUPPORTED_BITS_D, 8*4,
|
|
"Obsolete (should NOT be 1)", "Obsolete (should ALWAYS be 0)"));
|
|
proto_tree_add_text(flags_tree, tvb, offset + 2, 4, "%s",
|
|
decode_boolean_bitfield(supported_bits, MPPE_SUPPORTED_BITS_L, 8*4,
|
|
"40-bit encryption ON", "40-bit encryption OFF"));
|
|
proto_tree_add_text(flags_tree, tvb, offset + 2, 4, "%s",
|
|
decode_boolean_bitfield(supported_bits, MPPE_SUPPORTED_BITS_S, 8*4,
|
|
"128-bit encryption ON", "128-bit encryption OFF"));
|
|
proto_tree_add_text(flags_tree, tvb, offset + 2, 4, "%s",
|
|
decode_boolean_bitfield(supported_bits, MPPE_SUPPORTED_BITS_M, 8*4,
|
|
"56-bit encryption ON", "56-bit encryption OFF"));
|
|
proto_tree_add_text(flags_tree, tvb, offset + 2, 4, "%s",
|
|
decode_boolean_bitfield(supported_bits, MPPE_SUPPORTED_BITS_H, 8*4,
|
|
"Stateless mode ON", "Stateless mode OFF"));
|
|
}
|
|
|
|
static void
|
|
dissect_ccp_bsdcomp_opt(const ip_tcp_opt *optp, tvbuff_t *tvb,
|
|
int offset, guint length, packet_info *pinfo _U_,
|
|
proto_tree *tree)
|
|
{
|
|
proto_item *tf;
|
|
proto_tree *field_tree;
|
|
|
|
tf = proto_tree_add_text(tree, tvb, offset, length, "%s", optp->name);
|
|
field_tree = proto_item_add_subtree(tf, *optp->subtree_index);
|
|
|
|
proto_tree_add_text(field_tree, tvb, offset + 2, 1,
|
|
"Version: %u", tvb_get_guint8(tvb, offset + 2) >> 5);
|
|
proto_tree_add_text(field_tree, tvb, offset + 2, 1,
|
|
"Dict: %u bits",
|
|
tvb_get_guint8(tvb, offset + 2) & 0x1f);
|
|
}
|
|
|
|
static void
|
|
dissect_ccp_lzsdcp_opt(const ip_tcp_opt *optp, tvbuff_t *tvb,
|
|
int offset, guint length, packet_info *pinfo _U_,
|
|
proto_tree *tree)
|
|
{
|
|
proto_item *tf;
|
|
proto_tree *field_tree;
|
|
guint8 check_mode;
|
|
guint8 process_mode;
|
|
|
|
tf = proto_tree_add_text(tree, tvb, offset, length, "%s", optp->name);
|
|
field_tree = proto_item_add_subtree(tf, *optp->subtree_index);
|
|
|
|
proto_tree_add_text(field_tree, tvb, offset + 2, 2,
|
|
"History Count: %u", tvb_get_ntohs(tvb, offset + 2));
|
|
check_mode = tvb_get_guint8(tvb, offset + 4);
|
|
proto_tree_add_text(field_tree, tvb, offset + 4, 1,
|
|
"Check Mode: %s (0x%02X)",
|
|
val_to_str(check_mode, lzsdcp_checkmode_vals, "Unknown"),
|
|
check_mode);
|
|
process_mode = tvb_get_guint8(tvb, offset + 5);
|
|
proto_tree_add_text(field_tree, tvb, offset + 5, 1,
|
|
"Process Mode: %s (0x%02X)",
|
|
val_to_str(process_mode, lzsdcp_processmode_vals, "Unkown"),
|
|
process_mode);
|
|
}
|
|
|
|
static void
|
|
dissect_ccp_mvrca_opt(const ip_tcp_opt *optp, tvbuff_t *tvb,
|
|
int offset, guint length, packet_info *pinfo _U_,
|
|
proto_tree *tree)
|
|
{
|
|
proto_item *tf;
|
|
proto_tree *field_tree;
|
|
|
|
tf = proto_tree_add_text(tree, tvb, offset, length, "%s", optp->name);
|
|
field_tree = proto_item_add_subtree(tf, *optp->subtree_index);
|
|
|
|
proto_tree_add_text(field_tree, tvb, offset + 2, 1,
|
|
"Features: %u", tvb_get_guint8(tvb, offset + 2) >> 5);
|
|
proto_tree_add_text(field_tree, tvb, offset + 2, 1,
|
|
"Packet by Packet flag: %s",
|
|
tvb_get_guint8(tvb, offset + 2) & 0x20 ? "true" : "false");
|
|
proto_tree_add_text(field_tree, tvb, offset + 2, 1,
|
|
"History: %u", tvb_get_guint8(tvb, offset + 2) & 0x20);
|
|
proto_tree_add_text(field_tree, tvb, offset + 3, 1,
|
|
"Number of contexts: %u", tvb_get_guint8(tvb, offset + 3));
|
|
}
|
|
|
|
static void
|
|
dissect_ccp_deflate_opt(const ip_tcp_opt *optp, tvbuff_t *tvb,
|
|
int offset, guint length, packet_info *pinfo _U_,
|
|
proto_tree *tree)
|
|
{
|
|
proto_item *tf;
|
|
proto_tree *field_tree;
|
|
guint8 method;
|
|
|
|
tf = proto_tree_add_text(tree, tvb, offset, length, "%s", optp->name);
|
|
field_tree = proto_item_add_subtree(tf, *optp->subtree_index);
|
|
|
|
proto_tree_add_text(field_tree, tvb, offset + 2, 1,
|
|
"Window: %u", hi_nibble(tvb_get_guint8(tvb, offset + 2)));
|
|
method = lo_nibble(tvb_get_guint8(tvb, offset + 2));
|
|
proto_tree_add_text(field_tree, tvb, offset + 2, 1,
|
|
"Method: %s (0x%02x)",
|
|
method == 0x08 ? "zlib compression" : "other", method);
|
|
proto_tree_add_text(field_tree, tvb, offset + 3, 1,
|
|
"Sequence number check method: %u",
|
|
tvb_get_guint8(tvb, offset + 2) & 0x03);
|
|
}
|
|
|
|
static void
|
|
dissect_cbcp_no_callback_opt(const ip_tcp_opt *optp, tvbuff_t *tvb,
|
|
int offset, guint length, packet_info *pinfo _U_,
|
|
proto_tree *tree)
|
|
{
|
|
proto_tree_add_text(tree, tvb, offset, length, "%s", optp->name);
|
|
}
|
|
|
|
static void
|
|
dissect_cbcp_callback_opt(const ip_tcp_opt *optp, tvbuff_t *tvb,
|
|
int offset, guint length, packet_info *pinfo _U_,
|
|
proto_tree *tree)
|
|
{
|
|
proto_item *tf;
|
|
proto_tree *field_tree;
|
|
proto_item *ta;
|
|
proto_tree *addr_tree;
|
|
guint8 addr_type;
|
|
guint addr_len;
|
|
|
|
tf = proto_tree_add_text(tree, tvb, offset, length, "%s", optp->name);
|
|
field_tree = proto_item_add_subtree(tf, *optp->subtree_index);
|
|
|
|
proto_tree_add_text(field_tree, tvb, offset + 2, 1,
|
|
"Callback delay: %u", tvb_get_guint8(tvb, offset + 2));
|
|
offset += 3;
|
|
length -= 3;
|
|
|
|
while (length > 0) {
|
|
ta = proto_tree_add_text(field_tree, tvb, offset, length,
|
|
"Callback Address");
|
|
addr_type = tvb_get_guint8(tvb, offset);
|
|
addr_tree = proto_item_add_subtree(tf, ett_cbcp_callback_opt_addr);
|
|
proto_tree_add_text(addr_tree, tvb, offset, 1,
|
|
"Address Type: %s (%u)",
|
|
((addr_type == 1) ? "PSTN/ISDN" : "Other"), addr_type);
|
|
offset++;
|
|
length--;
|
|
addr_len = tvb_strsize(tvb, offset);
|
|
proto_tree_add_text(addr_tree, tvb, offset, addr_len,
|
|
"Address: %s",
|
|
tvb_format_text(tvb, offset, addr_len - 1));
|
|
offset += (addr_len + 1);
|
|
length -= (addr_len + 1);
|
|
}
|
|
}
|
|
|
|
static void
|
|
dissect_bacp_favored_peer_opt(const ip_tcp_opt *optp, tvbuff_t *tvb,
|
|
int offset, guint length, packet_info *pinfo _U_,
|
|
proto_tree *tree)
|
|
{
|
|
proto_item *tf;
|
|
proto_tree *field_tree;
|
|
|
|
tf = proto_tree_add_text(tree, tvb, offset, length, "%s", optp->name);
|
|
field_tree = proto_item_add_subtree(tf, *optp->subtree_index);
|
|
|
|
proto_tree_add_text(field_tree, tvb, offset + 2, 4,
|
|
"Magic number: 0x%08x", tvb_get_ntohl(tvb, offset + 2));
|
|
}
|
|
|
|
static void
|
|
dissect_bap_link_type_opt(const ip_tcp_opt *optp, tvbuff_t *tvb,
|
|
int offset, guint length, packet_info *pinfo _U_,
|
|
proto_tree *tree)
|
|
{
|
|
proto_item *tf;
|
|
proto_tree *field_tree;
|
|
guint8 link_type;
|
|
|
|
tf = proto_tree_add_text(tree, tvb, offset, length, "%s", optp->name);
|
|
field_tree = proto_item_add_subtree(tf, *optp->subtree_index);
|
|
|
|
proto_tree_add_text(field_tree, tvb, offset + 2, 2,
|
|
"Link Speed: %u kbps", tvb_get_ntohs(tvb, offset + 2));
|
|
link_type = tvb_get_guint8(tvb, offset + 4);
|
|
proto_tree_add_text(field_tree, tvb, offset + 4, 1,
|
|
"Link Type: %s (%u)", val_to_str(link_type, bap_link_type_vals,
|
|
"Unknown"), link_type);
|
|
}
|
|
|
|
static void
|
|
dissect_bap_phone_delta_opt(const ip_tcp_opt *optp, tvbuff_t *tvb,
|
|
int offset, guint length, packet_info *pinfo _U_,
|
|
proto_tree *tree)
|
|
{
|
|
proto_item *tf;
|
|
proto_tree *field_tree;
|
|
proto_item *ti;
|
|
proto_tree *suboption_tree;
|
|
guint8 subopt_type;
|
|
guint8 subopt_len;
|
|
|
|
tf = proto_tree_add_text(tree, tvb, offset, length, "%s", optp->name);
|
|
field_tree = proto_item_add_subtree(tf, *optp->subtree_index);
|
|
|
|
offset += 2;
|
|
length -= 2;
|
|
|
|
while (length > 0) {
|
|
subopt_type = tvb_get_guint8(tvb, offset);
|
|
subopt_len = tvb_get_guint8(tvb, offset + 1);
|
|
ti = proto_tree_add_text(field_tree, tvb, offset, subopt_len,
|
|
"Sub-Option (%d byte%s)",
|
|
subopt_len, plurality(subopt_len, "", "s"));
|
|
suboption_tree = proto_item_add_subtree(ti, ett_bap_phone_delta_subopt);
|
|
|
|
proto_tree_add_text(suboption_tree, tvb, offset, 1,
|
|
"Sub-Option Type: %s (%u)",
|
|
val_to_str(subopt_type, bap_phone_delta_subopt_vals, "Unknown"),
|
|
subopt_type);
|
|
|
|
proto_tree_add_text(suboption_tree, tvb, offset + 1, 1,
|
|
"Sub-Option Length: %u", subopt_len);
|
|
|
|
switch (subopt_type) {
|
|
case BAP_PHONE_DELTA_SUBOPT_UNIQ_DIGIT:
|
|
proto_tree_add_text(suboption_tree, tvb, offset + 2, 1, "Uniq Digit: %u",
|
|
tvb_get_guint8(tvb, offset + 2));
|
|
break;
|
|
case BAP_PHONE_DELTA_SUBOPT_SUBSC_NUM:
|
|
if (subopt_len > 2) {
|
|
proto_tree_add_text(suboption_tree, tvb, offset + 2, subopt_len - 2,
|
|
"Subscriber Number: %s",
|
|
tvb_format_text(tvb, offset + 2, subopt_len - 2));
|
|
} else {
|
|
proto_tree_add_text(suboption_tree, tvb, offset + 1, 1,
|
|
"Invalid suboption length: %u", subopt_len);
|
|
}
|
|
break;
|
|
case BAP_PHONE_DELTA_SUBOPT_PHONENUM_SUBADDR:
|
|
if (subopt_len > 2) {
|
|
proto_tree_add_text(suboption_tree, tvb, offset + 2, subopt_len - 2,
|
|
"Phone Number Sub Address: %s",
|
|
tvb_format_text(tvb, offset + 2, subopt_len - 2));
|
|
}
|
|
break;
|
|
default:
|
|
proto_tree_add_text(suboption_tree, tvb, offset + 2, subopt_len - 2,
|
|
"Unknown");
|
|
break;
|
|
}
|
|
offset += subopt_len;
|
|
length -= subopt_len;
|
|
}
|
|
}
|
|
|
|
static void
|
|
dissect_bap_reason_opt(const ip_tcp_opt *optp, tvbuff_t *tvb,
|
|
int offset, guint length, packet_info *pinfo _U_,
|
|
proto_tree *tree)
|
|
{
|
|
if (length > 2) {
|
|
proto_tree_add_text(tree, tvb, offset, length, "%s: %s",
|
|
optp->name,
|
|
tvb_format_text(tvb, offset + 2, length - 2));
|
|
}
|
|
}
|
|
|
|
static void
|
|
dissect_bap_link_disc_opt(const ip_tcp_opt *optp, tvbuff_t *tvb,
|
|
int offset, guint length, packet_info *pinfo _U_,
|
|
proto_tree *tree)
|
|
{
|
|
proto_tree_add_text(tree, tvb, offset, length, "%s: 0x%04x",
|
|
optp->name, tvb_get_ntohs(tvb, offset + 2));
|
|
}
|
|
|
|
static void
|
|
dissect_bap_call_status_opt(const ip_tcp_opt *optp, tvbuff_t *tvb,
|
|
int offset, guint length, packet_info *pinfo _U_,
|
|
proto_tree *tree)
|
|
{
|
|
proto_item *tf;
|
|
proto_tree *field_tree;
|
|
guint8 status, action;
|
|
|
|
tf = proto_tree_add_text(tree, tvb, offset, length, "%s", optp->name);
|
|
field_tree = proto_item_add_subtree(tf, *optp->subtree_index);
|
|
|
|
status = tvb_get_guint8(tvb, offset + 2);
|
|
proto_tree_add_text(field_tree, tvb, offset + 2, 1,
|
|
"Status: %s (0x%02x)",
|
|
val_to_str(status, q931_cause_code_vals, "Unknown"), status);
|
|
|
|
action = tvb_get_guint8(tvb, offset + 3);
|
|
proto_tree_add_text(field_tree, tvb, offset + 3, 1,
|
|
"Action: %s (0x%02x)",
|
|
val_to_str(action, bap_call_status_opt_action_vals, "Unknown"), action);
|
|
}
|
|
|
|
static void
|
|
dissect_cp( tvbuff_t *tvb, int proto_id, int proto_subtree_index,
|
|
const value_string *proto_vals, int options_subtree_index,
|
|
const ip_tcp_opt *opts, int nopts, packet_info *pinfo,
|
|
proto_tree *tree )
|
|
{
|
|
proto_item *ti;
|
|
proto_tree *fh_tree = NULL;
|
|
proto_item *tf;
|
|
proto_tree *field_tree;
|
|
|
|
guint8 code;
|
|
guint8 id;
|
|
int length, offset;
|
|
guint16 protocol;
|
|
|
|
code = tvb_get_guint8(tvb, 0);
|
|
id = tvb_get_guint8(tvb, 1);
|
|
length = tvb_get_ntohs(tvb, 2);
|
|
|
|
if(check_col(pinfo->cinfo, COL_PROTOCOL))
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL,
|
|
proto_get_protocol_short_name(find_protocol_by_id(proto_id)));
|
|
|
|
if(check_col(pinfo->cinfo, COL_INFO))
|
|
col_add_str(pinfo->cinfo, COL_INFO,
|
|
val_to_str(code, proto_vals, "Unknown"));
|
|
|
|
if(tree) {
|
|
ti = proto_tree_add_item(tree, proto_id, tvb, 0, length, FALSE);
|
|
fh_tree = proto_item_add_subtree(ti, proto_subtree_index);
|
|
proto_tree_add_text(fh_tree, tvb, 0, 1, "Code: %s (0x%02x)",
|
|
val_to_str(code, proto_vals, "Unknown"), code);
|
|
proto_tree_add_text(fh_tree, tvb, 1, 1, "Identifier: 0x%02x",
|
|
id);
|
|
proto_tree_add_text(fh_tree, tvb, 2, 2, "Length: %u",
|
|
length);
|
|
}
|
|
offset = 4;
|
|
length -= 4;
|
|
|
|
switch (code) {
|
|
case CONFREQ:
|
|
case CONFACK:
|
|
case CONFNAK:
|
|
case CONFREJ:
|
|
if(tree) {
|
|
if (length > 0) {
|
|
tf = proto_tree_add_text(fh_tree, tvb, offset, length,
|
|
"Options: (%d byte%s)", length, plurality(length, "", "s"));
|
|
field_tree = proto_item_add_subtree(tf, options_subtree_index);
|
|
dissect_ip_tcp_options(tvb, offset, length, opts, nopts, -1,
|
|
pinfo, field_tree);
|
|
}
|
|
}
|
|
break;
|
|
|
|
case ECHOREQ:
|
|
case ECHOREP:
|
|
case DISCREQ:
|
|
case IDENT:
|
|
if(tree) {
|
|
proto_tree_add_text(fh_tree, tvb, offset, 4, "Magic number: 0x%08x",
|
|
tvb_get_ntohl(tvb, offset));
|
|
offset += 4;
|
|
length -= 4;
|
|
if (length > 0)
|
|
proto_tree_add_text(fh_tree, tvb, offset, length, "Message (%d byte%s)",
|
|
length, plurality(length, "", "s"));
|
|
}
|
|
break;
|
|
|
|
case TIMEREMAIN:
|
|
if(tree) {
|
|
proto_tree_add_text(fh_tree, tvb, offset, 4, "Magic number: 0x%08x",
|
|
tvb_get_ntohl(tvb, offset));
|
|
offset += 4;
|
|
length -= 4;
|
|
proto_tree_add_text(fh_tree, tvb, offset, 4, "Seconds remaining: %u",
|
|
tvb_get_ntohl(tvb, offset));
|
|
offset += 4;
|
|
length -= 4;
|
|
if (length > 0)
|
|
proto_tree_add_text(fh_tree, tvb, offset, length, "Message (%d byte%s)",
|
|
length, plurality(length, "", "s"));
|
|
}
|
|
break;
|
|
|
|
case PROTREJ:
|
|
if(tree) {
|
|
gboolean save_in_error_pkt;
|
|
tvbuff_t *next_tvb;
|
|
|
|
protocol = tvb_get_ntohs(tvb, offset);
|
|
proto_tree_add_text(fh_tree, tvb, offset, 2,
|
|
"Rejected protocol: %s (0x%04x)",
|
|
val_to_str(protocol, ppp_vals, "Unknown"),
|
|
protocol);
|
|
offset += 2;
|
|
length -= 2;
|
|
if (length > 0) {
|
|
proto_tree_add_text(fh_tree, tvb, offset, length,
|
|
"Rejected packet (%d byte%s)",
|
|
length, plurality(length, "", "s"));
|
|
|
|
/* Save the current value of the "we're inside an error packet"
|
|
flag, and set that flag; subdissectors may treat packets
|
|
that are the payload of error packets differently from
|
|
"real" packets. */
|
|
save_in_error_pkt = pinfo->in_error_pkt;
|
|
pinfo->in_error_pkt = TRUE;
|
|
|
|
/* Decode the rejected packet. */
|
|
next_tvb = tvb_new_subset(tvb, offset, length, length);
|
|
if (!dissector_try_port(ppp_subdissector_table, protocol,
|
|
next_tvb, pinfo, fh_tree)) {
|
|
call_dissector(data_handle, next_tvb, pinfo, fh_tree);
|
|
}
|
|
|
|
/* Restore the "we're inside an error packet" flag. */
|
|
pinfo->in_error_pkt = save_in_error_pkt;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case CODEREJ:
|
|
/* decode the rejected LCP packet here. */
|
|
if (length > 0)
|
|
proto_tree_add_text(fh_tree, tvb, offset, length, "Rejected packet (%d byte%s)",
|
|
length, plurality(length, "", "s"));
|
|
break;
|
|
|
|
case TERMREQ:
|
|
case TERMACK:
|
|
if (length > 0)
|
|
proto_tree_add_text(fh_tree, tvb, offset, length, "Data (%d byte%s)",
|
|
length, plurality(length, "", "s"));
|
|
break;
|
|
|
|
default:
|
|
if (length > 0)
|
|
proto_tree_add_text(fh_tree, tvb, offset, length, "Stuff (%d byte%s)",
|
|
length, plurality(length, "", "s"));
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Protocol field compression */
|
|
#define PFC_BIT 0x01
|
|
|
|
static void
|
|
dissect_ppp_common( tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree,
|
|
proto_tree *fh_tree, proto_item *ti )
|
|
{
|
|
guint16 ppp_prot;
|
|
int proto_len;
|
|
tvbuff_t *next_tvb;
|
|
|
|
ppp_prot = tvb_get_guint8(tvb, 0);
|
|
if (ppp_prot & PFC_BIT) {
|
|
/* Compressed protocol field - just the byte we fetched. */
|
|
proto_len = 1;
|
|
} else {
|
|
/* Uncompressed protocol field - fetch all of it. */
|
|
ppp_prot = tvb_get_ntohs(tvb, 0);
|
|
proto_len = 2;
|
|
}
|
|
|
|
/* If "ti" is not null, it refers to the top-level "proto_ppp" item
|
|
for PPP, and was given a length equal to the length of any
|
|
stuff in the header preceding the protocol type, e.g. an HDLC
|
|
header; add the length of the protocol type field to it. */
|
|
if (ti != NULL)
|
|
proto_item_set_len(ti, proto_item_get_len(ti) + proto_len);
|
|
|
|
if (tree)
|
|
proto_tree_add_uint(fh_tree, hf_ppp_protocol, tvb, 0, proto_len, ppp_prot);
|
|
|
|
next_tvb = tvb_new_subset(tvb, proto_len, -1, -1);
|
|
|
|
/* do lookup with the subdissector table */
|
|
if (!dissector_try_port(ppp_subdissector_table, ppp_prot, next_tvb, pinfo, tree)) {
|
|
if (check_col(pinfo->cinfo, COL_PROTOCOL))
|
|
col_add_fstr(pinfo->cinfo, COL_PROTOCOL, "0x%04x", ppp_prot);
|
|
if (check_col(pinfo->cinfo, COL_INFO))
|
|
col_add_fstr(pinfo->cinfo, COL_INFO, "PPP %s (0x%04x)",
|
|
val_to_str(ppp_prot, ppp_vals, "Unknown"), ppp_prot);
|
|
call_dissector(data_handle,next_tvb, pinfo, tree);
|
|
}
|
|
}
|
|
|
|
static void
|
|
dissect_lcp_options(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
dissect_ip_tcp_options(tvb, 0, tvb_reported_length(tvb), lcp_opts, N_LCP_OPTS,
|
|
-1, pinfo, tree);
|
|
}
|
|
|
|
/*
|
|
* RFC 1661.
|
|
*/
|
|
static void
|
|
dissect_lcp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
dissect_cp(tvb, proto_lcp, ett_lcp, lcp_vals, ett_lcp_options,
|
|
lcp_opts, N_LCP_OPTS, pinfo, tree);
|
|
}
|
|
|
|
/*
|
|
* RFC 1332.
|
|
*/
|
|
static void
|
|
dissect_ipcp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
dissect_cp(tvb, proto_ipcp, ett_ipcp, cp_vals, ett_ipcp_options,
|
|
ipcp_opts, N_IPCP_OPTS, pinfo, tree);
|
|
}
|
|
|
|
/*
|
|
* RFC 1962.
|
|
*/
|
|
static void
|
|
dissect_ccp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
dissect_cp(tvb, proto_ccp, ett_ccp, ccp_vals, ett_ccp_options,
|
|
ccp_opts, N_CCP_OPTS, pinfo, tree);
|
|
}
|
|
|
|
/*
|
|
* Callback Control Protocol - see
|
|
*
|
|
* http://www.linet.gr.jp/~manabe/PPxP/doc/Standards/draft-gidwani-ppp-callback-cp-00.txt
|
|
*/
|
|
static void
|
|
dissect_cbcp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
dissect_cp(tvb, proto_cbcp, ett_cbcp, cbcp_vals, ett_cbcp_options,
|
|
cbcp_opts, N_CBCP_OPTS, pinfo, tree);
|
|
}
|
|
|
|
/*
|
|
* RFC 2125 (BACP and BAP).
|
|
*/
|
|
static void
|
|
dissect_bacp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
dissect_cp(tvb, proto_bacp, ett_bacp, cp_vals, ett_bacp_options,
|
|
bacp_opts, N_BACP_OPTS, pinfo, tree);
|
|
}
|
|
|
|
static void
|
|
dissect_bap(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
proto_item *ti;
|
|
proto_tree *fh_tree = NULL;
|
|
proto_item *tf;
|
|
proto_tree *field_tree;
|
|
|
|
guint8 type;
|
|
guint8 id;
|
|
int length, offset;
|
|
guint8 resp_code;
|
|
|
|
type = tvb_get_guint8(tvb, 0);
|
|
id = tvb_get_guint8(tvb, 1);
|
|
length = tvb_get_ntohs(tvb, 2);
|
|
|
|
if(check_col(pinfo->cinfo, COL_PROTOCOL))
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "PPP BAP");
|
|
|
|
if(check_col(pinfo->cinfo, COL_INFO))
|
|
col_add_str(pinfo->cinfo, COL_INFO,
|
|
val_to_str(type, bap_vals, "Unknown"));
|
|
|
|
if(tree) {
|
|
ti = proto_tree_add_item(tree, proto_bap, tvb, 0, length, FALSE);
|
|
fh_tree = proto_item_add_subtree(ti, ett_bap_options);
|
|
proto_tree_add_text(fh_tree, tvb, 0, 1, "Type: %s (0x%02x)",
|
|
val_to_str(type, bap_vals, "Unknown"), type);
|
|
proto_tree_add_text(fh_tree, tvb, 1, 1, "Identifier: 0x%02x",
|
|
id);
|
|
proto_tree_add_text(fh_tree, tvb, 2, 2, "Length: %u",
|
|
length);
|
|
}
|
|
offset = 4;
|
|
length -= 4;
|
|
|
|
if (type == BAP_CRES || type == BAP_CBRES ||
|
|
type == BAP_LDQRES || type == BAP_CSRES) {
|
|
resp_code = tvb_get_guint8(tvb, offset);
|
|
proto_tree_add_text(fh_tree, tvb, offset, 1, "Response Code: %s (0x%02x)",
|
|
val_to_str(resp_code, bap_resp_code_vals, "Unknown"), resp_code);
|
|
offset++;
|
|
length--;
|
|
}
|
|
|
|
if(tree) {
|
|
if (length > 0) {
|
|
tf = proto_tree_add_text(fh_tree, tvb, offset, length,
|
|
"Data (%d byte%s)", length, plurality(length, "", "s"));
|
|
field_tree = proto_item_add_subtree(tf, ett_bap_options);
|
|
dissect_ip_tcp_options(tvb, offset, length, bap_opts, N_BAP_OPTS, -1,
|
|
pinfo, field_tree);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
dissect_comp_data(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
proto_item *ti;
|
|
proto_tree *comp_data_tree;
|
|
|
|
if (check_col(pinfo->cinfo, COL_PROTOCOL))
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "PPP Comp");
|
|
|
|
if(check_col(pinfo->cinfo, COL_INFO))
|
|
col_set_str(pinfo->cinfo, COL_INFO, "Compressed data");
|
|
|
|
if (tree) {
|
|
ti = proto_tree_add_item(tree, proto_comp_data, tvb, 0, -1, FALSE);
|
|
comp_data_tree = proto_item_add_subtree(ti, ett_comp_data);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* RFC 3153 (both PPPMuxCP and PPPMux).
|
|
*/
|
|
static void
|
|
dissect_pppmuxcp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
dissect_cp(tvb,proto_pppmuxcp,ett_pppmuxcp,pppmuxcp_vals,
|
|
ett_pppmuxcp_options,pppmuxcp_opts,N_PPPMUXCP_OPTS,pinfo,tree);
|
|
}
|
|
|
|
#define PPPMUX_FLAGS_MASK 0xc0
|
|
#define PPPMUX_PFF_BIT_SET 0x80
|
|
#define PPPMUX_LXT_BIT_SET 0x40
|
|
|
|
static void
|
|
dissect_pppmux(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
proto_tree *mux_tree, *hdr_tree, *sub_tree, *flag_tree;
|
|
proto_tree *info_tree;
|
|
proto_item *ti = NULL,*sub_ti = NULL;
|
|
guint8 flags, byte;
|
|
guint16 length;
|
|
static guint16 pid;
|
|
tvbuff_t *next_tvb;
|
|
int offset = 0, length_remaining;
|
|
int length_field = 0, pid_field = 0,hdr_length = 0;
|
|
|
|
if (check_col(pinfo->cinfo, COL_PROTOCOL))
|
|
col_set_str(pinfo->cinfo,COL_PROTOCOL, "PPP PPPMux");
|
|
|
|
if (check_col(pinfo->cinfo, COL_INFO))
|
|
col_set_str(pinfo->cinfo, COL_INFO, "PPP Multiplexing");
|
|
|
|
length_remaining = tvb_reported_length(tvb);
|
|
|
|
if (tree) {
|
|
ti = proto_tree_add_item(tree, proto_pppmux, tvb, 0, -1, FALSE);
|
|
mux_tree = proto_item_add_subtree(ti,ett_pppmux);
|
|
|
|
while (length_remaining > 0) {
|
|
|
|
flags = tvb_get_guint8(tvb,offset) & PPPMUX_FLAGS_MASK;
|
|
|
|
if (flags && PPPMUX_LXT_BIT_SET ) {
|
|
length = tvb_get_ntohs(tvb,offset) & 0x3fff;
|
|
length_field = 2;
|
|
} else {
|
|
length = tvb_get_guint8(tvb,offset) & 0x3f;
|
|
length_field = 1;
|
|
}
|
|
|
|
if (flags && PPPMUX_PFF_BIT_SET) {
|
|
byte = tvb_get_guint8(tvb,offset + length_field);
|
|
if (byte && PFC_BIT) { /* Compressed PID field*/
|
|
pid = byte;
|
|
pid_field = 1;
|
|
} else { /*PID field is 2 bytes*/
|
|
pid = tvb_get_ntohs(tvb,offset + length_field);
|
|
pid_field = 2;
|
|
}
|
|
} else {
|
|
if (!pid){ /*No Last PID, hence use the default */
|
|
if (pppmux_def_prot_id)
|
|
pid = pppmux_def_prot_id;
|
|
}
|
|
}
|
|
|
|
hdr_length = length_field + pid_field;
|
|
|
|
ti = proto_tree_add_text(mux_tree, tvb, offset, length + length_field,
|
|
"PPPMux Sub-frame");
|
|
sub_tree = proto_item_add_subtree(ti,ett_pppmux_subframe);
|
|
sub_ti = proto_tree_add_text(sub_tree, tvb, offset,
|
|
hdr_length,"Header field");
|
|
|
|
hdr_tree = proto_item_add_subtree(sub_ti,ett_pppmux_subframe_hdr);
|
|
ti = proto_tree_add_text(hdr_tree, tvb, offset, length_field, "PFF/LXT: 0x%02X",
|
|
flags);
|
|
|
|
flag_tree = proto_item_add_subtree(ti,ett_pppmux_subframe_flags);
|
|
proto_tree_add_text(flag_tree,tvb,offset,length_field,"%s",
|
|
decode_boolean_bitfield(flags,0x80,8,"PID Present","PID not present"));
|
|
proto_tree_add_text(flag_tree,tvb,offset,length_field,"%s",
|
|
decode_boolean_bitfield(flags,0x40,8,"2 bytes ength field ","1 byte length field"));
|
|
|
|
ti = proto_tree_add_text(hdr_tree,tvb,offset,length_field,"Sub-frame Length = %u",length);
|
|
|
|
if (flags && PPPMUX_PFF_BIT_SET)
|
|
proto_tree_add_text(hdr_tree,tvb,offset + length_field,pid_field,"%s: %s(0x%02x)",
|
|
"Protocol ID",val_to_str(pid,ppp_vals,"Unknown"), pid);
|
|
|
|
offset += hdr_length;
|
|
length_remaining -= hdr_length;
|
|
length -= pid_field;
|
|
|
|
sub_ti = proto_tree_add_text(sub_tree,tvb,offset,length,"Information Field");
|
|
info_tree = proto_item_add_subtree(sub_ti,ett_pppmux_subframe_info);
|
|
|
|
next_tvb = tvb_new_subset(tvb,offset,length,-1);
|
|
|
|
if (!dissector_try_port(ppp_subdissector_table, pid, next_tvb, pinfo, info_tree)) {
|
|
call_dissector(data_handle, next_tvb, pinfo, info_tree);
|
|
}
|
|
offset += length;
|
|
length_remaining -= length;
|
|
} /* While length_remaining */
|
|
pid = 0;
|
|
} /* if tree */
|
|
}
|
|
|
|
/*
|
|
* RFC 3032.
|
|
*/
|
|
static void
|
|
dissect_mplscp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
dissect_cp(tvb, proto_mplscp, ett_mplscp, cp_vals, ett_mplscp_options,
|
|
NULL, 0, pinfo, tree);
|
|
}
|
|
|
|
/*
|
|
* Cisco Discovery Protocol Control Protocol.
|
|
* XXX - where is this documented?
|
|
*/
|
|
static void
|
|
dissect_cdpcp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
dissect_cp(tvb, proto_cdpcp, ett_cdpcp, cp_vals, ett_cdpcp_options,
|
|
NULL, 0, pinfo, tree);
|
|
}
|
|
|
|
#define MP_FRAG_MASK 0xC0
|
|
#define MP_FRAG(bits) ((bits) & MP_FRAG_MASK)
|
|
#define MP_FRAG_FIRST 0x80
|
|
#define MP_FRAG_LAST 0x40
|
|
#define MP_FRAG_RESERVED 0x3f
|
|
|
|
static const true_false_string frag_truth = {
|
|
"Yes",
|
|
"No"
|
|
};
|
|
|
|
/* According to RFC 1717, the length the MP header isn't indicated anywhere
|
|
in the header itself. It starts out at four bytes and can be
|
|
negotiated down to two using LCP. We currently assume that all
|
|
headers are four bytes. - gcc
|
|
*/
|
|
static void
|
|
dissect_mp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
proto_tree *mp_tree, *hdr_tree;
|
|
proto_item *ti = NULL;
|
|
guint8 flags;
|
|
gchar *flag_str;
|
|
tvbuff_t *next_tvb;
|
|
|
|
if (check_col(pinfo->cinfo, COL_PROTOCOL))
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "PPP MP");
|
|
|
|
if (check_col(pinfo->cinfo, COL_INFO))
|
|
col_set_str(pinfo->cinfo, COL_INFO, "PPP Multilink");
|
|
|
|
flags = tvb_get_guint8(tvb, 0);
|
|
|
|
if (tree) {
|
|
switch (flags) {
|
|
case MP_FRAG_FIRST:
|
|
flag_str = "First";
|
|
break;
|
|
case MP_FRAG_LAST:
|
|
flag_str = "Last";
|
|
break;
|
|
case MP_FRAG_FIRST|MP_FRAG_LAST:
|
|
flag_str = "First, Last";
|
|
break;
|
|
default:
|
|
flag_str = "Unknown";
|
|
break;
|
|
}
|
|
ti = proto_tree_add_item(tree, proto_mp, tvb, 0, 4, FALSE);
|
|
mp_tree = proto_item_add_subtree(ti, ett_mp);
|
|
ti = proto_tree_add_text(mp_tree, tvb, 0, 1, "Fragment: 0x%2X (%s)",
|
|
flags, flag_str);
|
|
hdr_tree = proto_item_add_subtree(ti, ett_mp_flags);
|
|
proto_tree_add_boolean(hdr_tree, hf_mp_frag_first, tvb, 0, 1, flags);
|
|
proto_tree_add_boolean(hdr_tree, hf_mp_frag_last, tvb, 0, 1, flags),
|
|
proto_tree_add_text(hdr_tree, tvb, 0, 1, "%s",
|
|
decode_boolean_bitfield(flags, MP_FRAG_RESERVED, sizeof(flags) * 8,
|
|
"reserved", "reserved"));
|
|
proto_tree_add_item(mp_tree, hf_mp_sequence_num, tvb, 1, 3, FALSE);
|
|
}
|
|
|
|
if (tvb_reported_length_remaining(tvb, 4) > 0) {
|
|
next_tvb = tvb_new_subset(tvb, 4, -1, -1);
|
|
dissect_ppp(next_tvb, pinfo, tree);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Handles PPP without HDLC framing, just a protocol field (RFC 1661).
|
|
*/
|
|
static void
|
|
dissect_ppp( tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree ) {
|
|
proto_item *ti = NULL;
|
|
proto_tree *fh_tree = NULL;
|
|
|
|
if(tree) {
|
|
ti = proto_tree_add_item(tree, proto_ppp, tvb, 0, -1, FALSE);
|
|
fh_tree = proto_item_add_subtree(ti, ett_ppp);
|
|
}
|
|
|
|
dissect_ppp_common(tvb, pinfo, tree, fh_tree, ti);
|
|
}
|
|
|
|
/*
|
|
* Handles link-layer encapsulations where the frame might be
|
|
* a PPP in HDLC-like Framing frame (RFC 1662) or a Cisco HDLC frame.
|
|
*/
|
|
static void
|
|
dissect_ppp_hdlc( tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree )
|
|
{
|
|
proto_item *ti = NULL;
|
|
proto_tree *fh_tree = NULL;
|
|
guint8 byte0;
|
|
int proto_offset;
|
|
tvbuff_t *next_tvb;
|
|
|
|
byte0 = tvb_get_guint8(tvb, 0);
|
|
if (byte0 == CHDLC_ADDR_UNICAST || byte0 == CHDLC_ADDR_MULTICAST) {
|
|
/* Cisco HDLC encapsulation */
|
|
call_dissector(chdlc_handle, tvb, pinfo, tree);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* XXX - should we have a routine that always dissects PPP, for use
|
|
* when we know the packets are PPP, not CHDLC?
|
|
*/
|
|
|
|
/* PPP HDLC encapsulation */
|
|
if (byte0 == 0xff)
|
|
proto_offset = 2;
|
|
else {
|
|
/* address and control are compressed (NULL) */
|
|
proto_offset = 0;
|
|
}
|
|
|
|
/* load the top pane info. This should be overwritten by
|
|
the next protocol in the stack */
|
|
|
|
if(check_col(pinfo->cinfo, COL_PROTOCOL))
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "PPP" );
|
|
|
|
switch (pinfo->p2p_dir) {
|
|
|
|
case P2P_DIR_SENT:
|
|
if(check_col(pinfo->cinfo, COL_RES_DL_SRC))
|
|
col_set_str(pinfo->cinfo, COL_RES_DL_SRC, "DTE");
|
|
if(check_col(pinfo->cinfo, COL_RES_DL_DST))
|
|
col_set_str(pinfo->cinfo, COL_RES_DL_DST, "DCE");
|
|
break;
|
|
|
|
case P2P_DIR_RECV:
|
|
if(check_col(pinfo->cinfo, COL_RES_DL_SRC))
|
|
col_set_str(pinfo->cinfo, COL_RES_DL_SRC, "DCE");
|
|
if(check_col(pinfo->cinfo, COL_RES_DL_DST))
|
|
col_set_str(pinfo->cinfo, COL_RES_DL_DST, "DTE");
|
|
break;
|
|
|
|
default:
|
|
if(check_col(pinfo->cinfo, COL_RES_DL_SRC))
|
|
col_set_str(pinfo->cinfo, COL_RES_DL_SRC, "N/A");
|
|
if(check_col(pinfo->cinfo, COL_RES_DL_DST))
|
|
col_set_str(pinfo->cinfo, COL_RES_DL_DST, "N/A");
|
|
break;
|
|
}
|
|
|
|
if(tree) {
|
|
ti = proto_tree_add_item(tree, proto_ppp, tvb, 0, proto_offset, FALSE);
|
|
fh_tree = proto_item_add_subtree(ti, ett_ppp);
|
|
if (byte0 == 0xff) {
|
|
proto_tree_add_item(fh_tree, hf_ppp_address, tvb, 0, 1, FALSE);
|
|
proto_tree_add_item(fh_tree, hf_ppp_control, tvb, 1, 1, FALSE);
|
|
}
|
|
}
|
|
|
|
next_tvb = decode_fcs(tvb, fh_tree, ppp_fcs_decode, proto_offset);
|
|
|
|
dissect_ppp_common(next_tvb, pinfo, tree, fh_tree, ti);
|
|
}
|
|
|
|
/*
|
|
* Handles PAP just as a protocol field
|
|
*/
|
|
static void
|
|
dissect_pap( tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree ) {
|
|
proto_item *ti;
|
|
proto_tree *fh_tree = NULL;
|
|
proto_item *tf;
|
|
proto_tree *field_tree;
|
|
proto_item *tm;
|
|
proto_tree *message_tree;
|
|
proto_item *tp;
|
|
proto_tree *peer_id_tree;
|
|
proto_item *tpw;
|
|
proto_tree *passwd_tree;
|
|
|
|
guint8 code;
|
|
guint8 id, peer_id_length, password_length, msg_length;
|
|
int length, offset;
|
|
|
|
code = tvb_get_guint8(tvb, 0);
|
|
id = tvb_get_guint8(tvb, 1);
|
|
length = tvb_get_ntohs(tvb, 2);
|
|
|
|
if(check_col(pinfo->cinfo, COL_PROTOCOL))
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "PPP PAP");
|
|
|
|
if(check_col(pinfo->cinfo, COL_INFO))
|
|
col_add_str(pinfo->cinfo, COL_INFO,
|
|
val_to_str(code, pap_vals, "Unknown"));
|
|
|
|
if(tree) {
|
|
ti = proto_tree_add_item(tree, proto_pap, tvb, 0, length, FALSE);
|
|
fh_tree = proto_item_add_subtree(ti, ett_pap);
|
|
proto_tree_add_text(fh_tree, tvb, 0, 1, "Code: %s (0x%02x)",
|
|
val_to_str(code, pap_vals, "Unknown"), code);
|
|
proto_tree_add_text(fh_tree, tvb, 1, 1, "Identifier: 0x%02x",
|
|
id);
|
|
proto_tree_add_text(fh_tree, tvb, 2, 2, "Length: %u",
|
|
length);
|
|
}
|
|
offset = 4;
|
|
length -= 4;
|
|
|
|
switch (code) {
|
|
case CONFREQ:
|
|
if(tree) {
|
|
if (length > 0) {
|
|
tf = proto_tree_add_text(fh_tree, tvb, offset, length,
|
|
"Data (%d byte%s)", length, plurality(length, "", "s"));
|
|
field_tree = proto_item_add_subtree(tf, ett_pap_data);
|
|
peer_id_length = tvb_get_guint8(tvb, offset);
|
|
tp = proto_tree_add_text(field_tree, tvb, offset, 1,
|
|
"Peer ID length: %d byte%s", peer_id_length, plurality(peer_id_length, "", "s"));
|
|
if (--length > 0) {
|
|
peer_id_tree = proto_item_add_subtree(tp, ett_pap_peer_id);
|
|
proto_tree_add_text(peer_id_tree, tvb, ++offset, ppp_min(peer_id_length, length),
|
|
"Peer-ID (%d byte%s)", peer_id_length, plurality(peer_id_length, "", "s"));
|
|
offset+=peer_id_length;
|
|
length-=peer_id_length;
|
|
if (length > 0) {
|
|
password_length = tvb_get_guint8(tvb, offset);
|
|
if (--length > 0) {
|
|
tpw = proto_tree_add_text(field_tree, tvb, offset, 1,
|
|
"Password length: %d byte%s", password_length, plurality(password_length, "", "s"));
|
|
passwd_tree = proto_item_add_subtree(tpw, ett_pap_password);
|
|
proto_tree_add_text(passwd_tree, tvb, ++offset, ppp_min(password_length, length),
|
|
"Password (%d byte%s)", password_length, plurality(password_length, "", "s"));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
|
|
case CONFACK:
|
|
case CONFNAK:
|
|
if(tree) {
|
|
if (length > 0) {
|
|
tf = proto_tree_add_text(fh_tree, tvb, offset, length,
|
|
"Data (%d byte%s)", length, plurality(length, "", "s"));
|
|
field_tree = proto_item_add_subtree(tf, ett_pap_data);
|
|
msg_length = tvb_get_guint8(tvb, offset);
|
|
tm = proto_tree_add_text(field_tree, tvb, offset, 1,
|
|
"Message length: %d byte%s", msg_length, plurality(msg_length, "", "s"));
|
|
if (--length > 0) {
|
|
message_tree = proto_item_add_subtree(tm, ett_pap_message);
|
|
proto_tree_add_text(message_tree, tvb, ++offset, ppp_min(msg_length, length),
|
|
"Message (%d byte%s)", msg_length, plurality(msg_length, "", "s"));
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
if (length > 0)
|
|
proto_tree_add_text(fh_tree, tvb, offset, length, "Stuff (%d byte%s)",
|
|
length, plurality(length, "", "s"));
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Handles CHAP just as a protocol field
|
|
*/
|
|
static void
|
|
dissect_chap( tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree ) {
|
|
proto_item *ti;
|
|
proto_tree *fh_tree = NULL;
|
|
proto_item *tf;
|
|
proto_tree *field_tree;
|
|
proto_item *tv;
|
|
proto_tree *value_tree;
|
|
|
|
guint8 code, id, value_size;
|
|
guint16 length;
|
|
int offset;
|
|
int name_length;
|
|
|
|
code = tvb_get_guint8(tvb, 0);
|
|
id = tvb_get_guint8(tvb, 1);
|
|
length = tvb_get_ntohs(tvb, 2);
|
|
|
|
if(check_col(pinfo->cinfo, COL_PROTOCOL))
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "PPP CHAP");
|
|
|
|
if(check_col(pinfo->cinfo, COL_INFO))
|
|
col_add_str(pinfo->cinfo, COL_INFO,
|
|
val_to_str(code, chap_vals, "Unknown"));
|
|
|
|
if(tree) {
|
|
ti = proto_tree_add_item(tree, proto_chap, tvb, 0, length, FALSE);
|
|
fh_tree = proto_item_add_subtree(ti, ett_chap);
|
|
proto_tree_add_text(fh_tree, tvb, 0, 1, "Code: %s (0x%02x)",
|
|
val_to_str(code, chap_vals, "Unknown"), code);
|
|
proto_tree_add_text(fh_tree, tvb, 1, 1, "Identifier: 0x%02x",
|
|
id);
|
|
proto_tree_add_text(fh_tree, tvb, 2, 2, "Length: %u",
|
|
length);
|
|
}
|
|
offset = 4;
|
|
length -= 4;
|
|
|
|
switch (code) {
|
|
case CHAP_CHAL:
|
|
case CHAP_RESP:
|
|
if(tree) {
|
|
if (length > 0) {
|
|
tf = proto_tree_add_text(fh_tree, tvb, offset, length,
|
|
"Data (%d byte%s)", length,
|
|
plurality(length, "", "s"));
|
|
field_tree = proto_item_add_subtree(tf, ett_chap_data);
|
|
value_size = tvb_get_guint8(tvb, offset);
|
|
name_length = length - value_size - 1;
|
|
tv = proto_tree_add_text(field_tree, tvb, offset, 1,
|
|
"Value Size: %d byte%s",
|
|
value_size, plurality(value_size, "", "s"));
|
|
if (--length > 0) {
|
|
value_tree = proto_item_add_subtree(tv, ett_chap_value);
|
|
proto_tree_add_text(value_tree, tvb, ++offset,
|
|
ppp_min(value_size, length),
|
|
"Value (%d byte%s)",
|
|
value_size, plurality(value_size, "", "s"));
|
|
offset+=value_size;
|
|
length-=value_size;
|
|
if (length > 0) {
|
|
proto_tree_add_text(field_tree, tvb, offset,
|
|
ppp_min(name_length, length),
|
|
"Name (%d byte%s)", name_length,
|
|
plurality(name_length, "", "s"));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
|
|
case CHAP_SUCC:
|
|
case CHAP_FAIL:
|
|
if(tree) {
|
|
if (length > 0) {
|
|
tf = proto_tree_add_text(fh_tree, tvb, offset, length,
|
|
"Data (%d byte%s)", length,
|
|
plurality(length, "", "s"));
|
|
field_tree = proto_item_add_subtree(tf, ett_chap_data);
|
|
tv = proto_tree_add_text(field_tree, tvb, offset, length,
|
|
"Message: %d byte%s",
|
|
length, plurality(length, "", "s"));
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
if (length > 0)
|
|
proto_tree_add_text(fh_tree, tvb, offset, length, "Stuff (%d byte%s)",
|
|
length, plurality(length, "", "s"));
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* RFC 2472.
|
|
*/
|
|
static void
|
|
dissect_ipv6cp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
dissect_cp(tvb, proto_ipv6cp, ett_ipv6cp, cp_vals, ett_ipv6cp_options,
|
|
ipv6cp_opts, N_IPV6CP_OPTS, pinfo, tree);
|
|
}
|
|
|
|
static void dissect_ipv6cp_if_id_opt(const ip_tcp_opt *optp, tvbuff_t *tvb,
|
|
int offset, guint length, packet_info *pinfo _U_,
|
|
proto_tree *tree)
|
|
{
|
|
proto_tree_add_text(tree, tvb, offset, length, "%s: %02x%02x:%02x%02x:%02x%x:%02x%02x",
|
|
optp->name,
|
|
tvb_get_guint8(tvb, offset + 2),
|
|
tvb_get_guint8(tvb, offset + 3),
|
|
tvb_get_guint8(tvb, offset + 4),
|
|
tvb_get_guint8(tvb, offset + 5),
|
|
tvb_get_guint8(tvb, offset + 6),
|
|
tvb_get_guint8(tvb, offset + 7),
|
|
tvb_get_guint8(tvb, offset + 8),
|
|
tvb_get_guint8(tvb, offset + 9)
|
|
);
|
|
}
|
|
|
|
void
|
|
proto_register_ppp(void)
|
|
{
|
|
static hf_register_info hf[] = {
|
|
{ &hf_ppp_address,
|
|
{ "Address", "ppp.address", FT_UINT8, BASE_HEX,
|
|
NULL, 0x0, "", HFILL }},
|
|
|
|
{ &hf_ppp_control,
|
|
{ "Control", "ppp.control", FT_UINT8, BASE_HEX,
|
|
NULL, 0x0, "", HFILL }},
|
|
|
|
{ &hf_ppp_protocol,
|
|
{ "Protocol", "ppp.protocol", FT_UINT16, BASE_HEX,
|
|
VALS(ppp_vals), 0x0, "", HFILL }},
|
|
};
|
|
static gint *ett[] = {
|
|
&ett_ppp,
|
|
};
|
|
|
|
module_t *ppp_module;
|
|
|
|
proto_ppp = proto_register_protocol("Point-to-Point Protocol", "PPP", "ppp");
|
|
proto_register_field_array(proto_ppp, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
|
|
/* subdissector code */
|
|
ppp_subdissector_table = register_dissector_table("ppp.protocol",
|
|
"PPP protocol", FT_UINT16, BASE_HEX);
|
|
|
|
register_dissector("ppp_hdlc", dissect_ppp_hdlc, proto_ppp);
|
|
register_dissector("ppp_lcp_options", dissect_lcp_options, proto_ppp);
|
|
register_dissector("ppp", dissect_ppp, proto_ppp);
|
|
|
|
/* Register the preferences for the ppp protocol */
|
|
ppp_module = prefs_register_protocol(proto_ppp, NULL);
|
|
|
|
prefs_register_enum_preference(ppp_module,
|
|
"fcs_type",
|
|
"PPP Frame Checksum Type",
|
|
"The type of PPP frame checksum (none, 16-bit, 32-bit)",
|
|
&ppp_fcs_decode,
|
|
fcs_options, FALSE);
|
|
prefs_register_bool_preference(ppp_module,
|
|
"decompress_vj",
|
|
"Decompress Van Jacobson-compressed frames",
|
|
"Whether Van Jacobson-compressed PPP frames should be decompressed",
|
|
&ppp_vj_decomp);
|
|
prefs_register_uint_preference(ppp_module,
|
|
"default_proto_id",
|
|
"PPPMuxCP Default PID",
|
|
"Default Protocol ID to be used for PPPMuxCP",
|
|
16, &pppmux_def_prot_id);
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_ppp(void)
|
|
{
|
|
dissector_handle_t ppp_hdlc_handle, ppp_handle;
|
|
|
|
/*
|
|
* Get a handle for the CHDLC dissector.
|
|
*/
|
|
chdlc_handle = find_dissector("chdlc");
|
|
data_handle = find_dissector("data");
|
|
|
|
ppp_hdlc_handle = find_dissector("ppp_hdlc");
|
|
ppp_handle = find_dissector("ppp");
|
|
dissector_add("wtap_encap", WTAP_ENCAP_PPP, ppp_hdlc_handle);
|
|
dissector_add("wtap_encap", WTAP_ENCAP_PPP_WITH_PHDR, ppp_hdlc_handle);
|
|
dissector_add("fr.ietf", NLPID_PPP, ppp_handle);
|
|
dissector_add("gre.proto", ETHERTYPE_PPP, ppp_hdlc_handle);
|
|
}
|
|
|
|
void
|
|
proto_register_mp(void)
|
|
{
|
|
static hf_register_info hf[] = {
|
|
{ &hf_mp_frag_first,
|
|
{ "First fragment", "mp.first", FT_BOOLEAN, 8,
|
|
TFS(&frag_truth), MP_FRAG_FIRST, "", HFILL }},
|
|
|
|
{ &hf_mp_frag_last,
|
|
{ "Last fragment", "mp.last", FT_BOOLEAN, 8,
|
|
TFS(&frag_truth), MP_FRAG_LAST, "", HFILL }},
|
|
|
|
{ &hf_mp_sequence_num,
|
|
{ "Sequence number", "mp.seq", FT_UINT24, BASE_DEC, NULL, 0x0,
|
|
"", HFILL }}
|
|
};
|
|
static gint *ett[] = {
|
|
&ett_mp,
|
|
&ett_mp_flags,
|
|
};
|
|
|
|
proto_mp = proto_register_protocol("PPP Multilink Protocol", "PPP MP", "mp");
|
|
proto_register_field_array(proto_mp, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_mp(void)
|
|
{
|
|
dissector_handle_t mp_handle;
|
|
|
|
mp_handle = create_dissector_handle(dissect_mp, proto_mp);
|
|
dissector_add("ppp.protocol", PPP_MP, mp_handle);
|
|
}
|
|
|
|
void
|
|
proto_register_lcp(void)
|
|
{
|
|
static gint *ett[] = {
|
|
&ett_lcp,
|
|
&ett_lcp_options,
|
|
&ett_lcp_authprot_opt,
|
|
&ett_lcp_qualprot_opt,
|
|
&ett_lcp_fcs_alternatives_opt,
|
|
&ett_lcp_numbered_mode_opt,
|
|
&ett_lcp_callback_opt,
|
|
&ett_lcp_multilink_ep_disc_opt,
|
|
&ett_lcp_internationalization_opt,
|
|
};
|
|
|
|
proto_lcp = proto_register_protocol("PPP Link Control Protocol", "PPP LCP",
|
|
"lcp");
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_lcp(void)
|
|
{
|
|
dissector_handle_t lcp_handle;
|
|
|
|
lcp_handle = create_dissector_handle(dissect_lcp, proto_lcp);
|
|
dissector_add("ppp.protocol", PPP_LCP, lcp_handle);
|
|
|
|
/*
|
|
* NDISWAN on Windows translates Ethernet frames from higher-level
|
|
* protocols into PPP frames to hand to the PPP driver, and translates
|
|
* PPP frames from the PPP driver to hand to the higher-level protocols.
|
|
*
|
|
* Apparently the PPP driver, on at least some versions of Windows,
|
|
* passes frames for internal-to-PPP protocols up through NDISWAN;
|
|
* the protocol type field appears to be passed through unchanged
|
|
* (unlike what's done with, for example, the protocol type field
|
|
* for IP, which is mapped from its PPP value to its Ethernet value).
|
|
*
|
|
* This means that we may see, on Ethernet captures, frames for
|
|
* protocols internal to PPP, so we register PPP_LCP with the
|
|
* "ethertype" dissector table as well as the PPP protocol dissector
|
|
* table.
|
|
*/
|
|
dissector_add("ethertype", PPP_LCP, lcp_handle);
|
|
}
|
|
|
|
void
|
|
proto_register_ipcp(void)
|
|
{
|
|
static gint *ett[] = {
|
|
&ett_ipcp,
|
|
&ett_ipcp_options,
|
|
&ett_ipcp_ipaddrs_opt,
|
|
&ett_ipcp_compressprot_opt,
|
|
};
|
|
|
|
proto_ipcp = proto_register_protocol("PPP IP Control Protocol", "PPP IPCP",
|
|
"ipcp");
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_ipcp(void)
|
|
{
|
|
dissector_handle_t ipcp_handle;
|
|
|
|
ipcp_handle = create_dissector_handle(dissect_ipcp, proto_ipcp);
|
|
dissector_add("ppp.protocol", PPP_IPCP, ipcp_handle);
|
|
|
|
/*
|
|
* See above comment about NDISWAN for an explanation of why we're
|
|
* registering with the "ethertype" dissector table.
|
|
*/
|
|
dissector_add("ethertype", PPP_IPCP, ipcp_handle);
|
|
}
|
|
|
|
void
|
|
proto_register_ccp(void)
|
|
{
|
|
static gint *ett[] = {
|
|
&ett_ccp,
|
|
&ett_ccp_options,
|
|
&ett_ccp_stac_opt,
|
|
&ett_ccp_mppc_opt,
|
|
&ett_ccp_bsdcomp_opt,
|
|
&ett_ccp_lzsdcp_opt,
|
|
&ett_ccp_mvrca_opt,
|
|
&ett_ccp_deflate_opt,
|
|
};
|
|
|
|
proto_ccp = proto_register_protocol("PPP Compression Control Protocol",
|
|
"PPP CCP", "ccp");
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_ccp(void)
|
|
{
|
|
dissector_handle_t ccp_handle;
|
|
|
|
ccp_handle = create_dissector_handle(dissect_ccp, proto_ccp);
|
|
dissector_add("ppp.protocol", PPP_CCP, ccp_handle);
|
|
|
|
/*
|
|
* See above comment about NDISWAN for an explanation of why we're
|
|
* registering with the "ethertype" dissector table.
|
|
*/
|
|
dissector_add("ethertype", PPP_CCP, ccp_handle);
|
|
}
|
|
|
|
void
|
|
proto_register_cbcp(void)
|
|
{
|
|
static gint *ett[] = {
|
|
&ett_cbcp,
|
|
&ett_cbcp_options,
|
|
&ett_cbcp_callback_opt,
|
|
&ett_cbcp_callback_opt_addr
|
|
};
|
|
|
|
proto_cbcp = proto_register_protocol("PPP Callback Control Protocol",
|
|
"PPP CBCP", "cbcp");
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_cbcp(void)
|
|
{
|
|
dissector_handle_t cbcp_handle;
|
|
|
|
cbcp_handle = create_dissector_handle(dissect_cbcp, proto_cbcp);
|
|
dissector_add("ppp.protocol", PPP_CBCP, cbcp_handle);
|
|
|
|
/*
|
|
* See above comment about NDISWAN for an explanation of why we're
|
|
* registering with the "ethertype" dissector table.
|
|
*/
|
|
dissector_add("ethertype", PPP_CBCP, cbcp_handle);
|
|
}
|
|
|
|
void
|
|
proto_register_bacp(void)
|
|
{
|
|
static gint *ett[] = {
|
|
&ett_bacp,
|
|
&ett_bacp_options,
|
|
&ett_bacp_favored_peer_opt
|
|
};
|
|
|
|
proto_bacp = proto_register_protocol("PPP Bandwidth Allocation Control Protocol",
|
|
"PPP BACP", "bacp");
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_bacp(void)
|
|
{
|
|
dissector_handle_t bacp_handle;
|
|
|
|
bacp_handle = create_dissector_handle(dissect_bacp, proto_bacp);
|
|
dissector_add("ppp.protocol", PPP_BACP, bacp_handle);
|
|
|
|
/*
|
|
* See above comment about NDISWAN for an explanation of why we're
|
|
* registering with the "ethertype" dissector table.
|
|
*/
|
|
dissector_add("ethertype", PPP_BACP, bacp_handle);
|
|
}
|
|
|
|
void
|
|
proto_register_bap(void)
|
|
{
|
|
static gint *ett[] = {
|
|
&ett_bap,
|
|
&ett_bap_options,
|
|
&ett_bap_link_type_opt,
|
|
&ett_bap_phone_delta_opt,
|
|
&ett_bap_phone_delta_subopt,
|
|
&ett_bap_call_status_opt
|
|
};
|
|
|
|
proto_bap = proto_register_protocol("PPP Bandwidth Allocation Protocol",
|
|
"PPP BAP", "bap");
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_bap(void)
|
|
{
|
|
dissector_handle_t bap_handle;
|
|
|
|
bap_handle = create_dissector_handle(dissect_bap, proto_bap);
|
|
dissector_add("ppp.protocol", PPP_BAP, bap_handle);
|
|
|
|
/*
|
|
* See above comment about NDISWAN for an explanation of why we're
|
|
* registering with the "ethertype" dissector table.
|
|
*/
|
|
dissector_add("ethertype", PPP_BAP, bap_handle);
|
|
}
|
|
|
|
void
|
|
proto_register_comp_data(void)
|
|
{
|
|
static gint *ett[] = {
|
|
&ett_comp_data
|
|
};
|
|
|
|
proto_comp_data = proto_register_protocol("PPP Compressed Datagram",
|
|
"PPP Comp", "comp_data");
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_comp_data(void)
|
|
{
|
|
dissector_handle_t comp_data_handle;
|
|
|
|
comp_data_handle = create_dissector_handle(dissect_comp_data,
|
|
proto_comp_data);
|
|
dissector_add("ppp.protocol", PPP_COMP, comp_data_handle);
|
|
|
|
/*
|
|
* See above comment about NDISWAN for an explanation of why we're
|
|
* registering with the "ethertype" dissector table.
|
|
*/
|
|
dissector_add("ethertype", PPP_COMP, comp_data_handle);
|
|
}
|
|
|
|
void
|
|
proto_register_pap(void)
|
|
{
|
|
static gint *ett[] = {
|
|
&ett_pap,
|
|
&ett_pap_data,
|
|
&ett_pap_peer_id,
|
|
&ett_pap_password,
|
|
&ett_pap_message,
|
|
};
|
|
|
|
proto_pap = proto_register_protocol("PPP Password Authentication Protocol", "PPP PAP",
|
|
"pap");
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_pap(void)
|
|
{
|
|
dissector_handle_t pap_handle;
|
|
|
|
pap_handle = create_dissector_handle(dissect_pap, proto_pap);
|
|
dissector_add("ppp.protocol", PPP_PAP, pap_handle);
|
|
|
|
/*
|
|
* See above comment about NDISWAN for an explanation of why we're
|
|
* registering with the "ethertype" dissector table.
|
|
*/
|
|
dissector_add("ethertype", PPP_PAP, pap_handle);
|
|
}
|
|
|
|
void
|
|
proto_register_chap(void)
|
|
{
|
|
static gint *ett[] = {
|
|
&ett_chap,
|
|
&ett_chap_data,
|
|
&ett_chap_value,
|
|
&ett_chap_name,
|
|
&ett_chap_message,
|
|
};
|
|
|
|
proto_chap = proto_register_protocol("PPP Challenge Handshake Authentication Protocol", "PPP CHAP",
|
|
"chap");
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_chap(void)
|
|
{
|
|
dissector_handle_t chap_handle;
|
|
|
|
chap_handle = create_dissector_handle(dissect_chap, proto_chap);
|
|
dissector_add("ppp.protocol", PPP_CHAP, chap_handle);
|
|
|
|
/*
|
|
* See above comment about NDISWAN for an explanation of why we're
|
|
* registering with the "ethertype" dissector table.
|
|
*/
|
|
dissector_add("ethertype", PPP_CHAP, chap_handle);
|
|
}
|
|
|
|
void
|
|
proto_register_pppmuxcp(void)
|
|
{
|
|
static gint *ett[] = {
|
|
&ett_pppmuxcp,
|
|
&ett_pppmuxcp_options,
|
|
};
|
|
|
|
proto_pppmuxcp = proto_register_protocol("PPPMux Control Protocol",
|
|
"PPP PPPMuxCP",
|
|
"pppmuxcp");
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
}
|
|
|
|
|
|
void
|
|
proto_reg_handoff_pppmuxcp(void)
|
|
{
|
|
dissector_handle_t muxcp_handle;
|
|
|
|
muxcp_handle = create_dissector_handle(dissect_pppmuxcp, proto_pppmuxcp);
|
|
dissector_add("ppp.protocol", PPP_MUXCP, muxcp_handle);
|
|
|
|
/*
|
|
* See above comment about NDISWAN for an explanation of why we're
|
|
* registering with the "ethertype" dissector table.
|
|
*/
|
|
dissector_add("ethertype", PPP_MUXCP, muxcp_handle);
|
|
}
|
|
|
|
|
|
void
|
|
proto_register_pppmux(void)
|
|
{
|
|
static gint *ett[] = {
|
|
&ett_pppmux,
|
|
&ett_pppmux_subframe,
|
|
&ett_pppmux_subframe_hdr,
|
|
&ett_pppmux_subframe_flags,
|
|
&ett_pppmux_subframe_info,
|
|
};
|
|
|
|
proto_pppmux = proto_register_protocol("PPP Multiplexing",
|
|
"PPP PPPMux",
|
|
"pppmux");
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_pppmux(void)
|
|
{
|
|
dissector_handle_t pppmux_handle;
|
|
|
|
pppmux_handle = create_dissector_handle(dissect_pppmux, proto_pppmux);
|
|
dissector_add("ppp.protocol", PPP_MUX, pppmux_handle);
|
|
|
|
/*
|
|
* See above comment about NDISWAN for an explanation of why we're
|
|
* registering with the "ethertype" dissector table.
|
|
*/
|
|
dissector_add("ethertype", PPP_MUX, pppmux_handle);
|
|
}
|
|
|
|
void
|
|
proto_register_mplscp(void)
|
|
{
|
|
static gint *ett[] = {
|
|
&ett_mplscp,
|
|
&ett_mplscp_options,
|
|
};
|
|
|
|
proto_mplscp = proto_register_protocol("PPP MPLS Control Protocol",
|
|
"PPP MPLSCP", "mplscp");
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_mplscp(void)
|
|
{
|
|
dissector_handle_t mplscp_handle;
|
|
|
|
mplscp_handle = create_dissector_handle(dissect_mplscp, proto_mplscp);
|
|
dissector_add("ppp.protocol", PPP_MPLSCP, mplscp_handle);
|
|
|
|
/*
|
|
* See above comment about NDISWAN for an explanation of why we're
|
|
* registering with the "ethertype" dissector table.
|
|
*/
|
|
dissector_add("ethertype", PPP_MPLSCP, mplscp_handle);
|
|
}
|
|
|
|
void
|
|
proto_register_cdpcp(void)
|
|
{
|
|
static gint *ett[] = {
|
|
&ett_cdpcp,
|
|
&ett_cdpcp_options,
|
|
};
|
|
|
|
proto_cdpcp = proto_register_protocol("PPP CDP Control Protocol",
|
|
"PPP CDPCP", "cdpcp");
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_cdpcp(void)
|
|
{
|
|
dissector_handle_t cdpcp_handle;
|
|
|
|
cdpcp_handle = create_dissector_handle(dissect_cdpcp, proto_cdpcp);
|
|
dissector_add("ppp.protocol", PPP_CDPCP, cdpcp_handle);
|
|
|
|
/*
|
|
* See above comment about NDISWAN for an explanation of why we're
|
|
* registering with the "ethertype" dissector table.
|
|
*/
|
|
dissector_add("ethertype", PPP_CDPCP, cdpcp_handle);
|
|
}
|
|
|
|
void
|
|
proto_register_ipv6cp(void)
|
|
{
|
|
static gint *ett[] = {
|
|
&ett_ipv6cp,
|
|
&ett_ipv6cp_options,
|
|
&ett_ipv6cp_if_id_opt,
|
|
&ett_ipv6cp_compressprot_opt,
|
|
};
|
|
|
|
proto_ipv6cp = proto_register_protocol("PPP IPv6 Control Protocol",
|
|
"PPP IPV6CP", "ipv6cp");
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_ipv6cp(void)
|
|
{
|
|
dissector_handle_t ipv6cp_handle;
|
|
|
|
ipv6cp_handle = create_dissector_handle(dissect_ipv6cp, proto_ipv6cp);
|
|
dissector_add("ppp.protocol", PPP_IPV6CP, ipv6cp_handle);
|
|
|
|
/*
|
|
* See above comment about NDISWAN for an explanation of why we're
|
|
* registering with the "ethertype" dissector table.
|
|
*/
|
|
dissector_add("ethertype", PPP_IPV6CP, ipv6cp_handle);
|
|
}
|