diff options
author | Gilbert Ramirez <gram@alumni.rice.edu> | 2004-07-18 18:06:47 +0000 |
---|---|---|
committer | Gilbert Ramirez <gram@alumni.rice.edu> | 2004-07-18 18:06:47 +0000 |
commit | 669db206cb1f270046ad400fff7655e20c63e723 (patch) | |
tree | 4eff24a2e16c8963e497e1fc575f35e6af59bd26 /packet-ppp.c | |
parent | ae46c27a38700af669ef907491081f09df6f6b2c (diff) |
Move dissectors to epan/dissectors directory.
Also move ncp222.py, x11-fields, process-x11-fields.pl,
make-reg-dotc, and make-reg-dotc.py.
Adjust #include lines in files that include packet-*.h
files.
svn path=/trunk/; revision=11410
Diffstat (limited to 'packet-ppp.c')
-rw-r--r-- | packet-ppp.c | 3767 |
1 files changed, 0 insertions, 3767 deletions
diff --git a/packet-ppp.c b/packet-ppp.c deleted file mode 100644 index 66962677a8..0000000000 --- a/packet-ppp.c +++ /dev/null @@ -1,3767 +0,0 @@ -/* packet-ppp.c - * Routines for ppp packet disassembly - * RFC 1661, RFC 1662 - * - * $Id$ - * - * Ethereal - Network traffic analyzer - * By Gerald Combs <gerald@ethereal.com> - * - * This file created and by Mike Hall <mlh@io.com> - * Copyright 1998 - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version 2 - * of the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. - */ - -#ifdef HAVE_CONFIG_H -# include "config.h" -#endif - -#include <string.h> -#include <glib.h> -#include "prefs.h" -#include <epan/packet.h> -#include "packet-ppp.h" -#include "ppptypes.h" -#include "etypes.h" -#include "ip_opts.h" -#include <epan/atalk-utils.h> -#include "packet-chdlc.h" -#include "packet-ip.h" -#include "packet-ipx.h" -#include "packet-vines.h" -#include "nlpid.h" -#include "crc16.h" -#include "crc32.h" - -#define ppp_min(a, b) ((a<b) ? a : b) - -static int proto_ppp = -1; -static int hf_ppp_address = -1; -static int hf_ppp_control = -1; -static int hf_ppp_protocol = -1; - -static gint ett_ppp = -1; - -static int proto_lcp = -1; - -static gint ett_lcp = -1; -static gint ett_lcp_options = -1; -static gint ett_lcp_authprot_opt = -1; -static gint ett_lcp_qualprot_opt = -1; -static gint ett_lcp_fcs_alternatives_opt = -1; -static gint ett_lcp_numbered_mode_opt = -1; -static gint ett_lcp_callback_opt = -1; -static gint ett_lcp_multilink_ep_disc_opt = -1; -static gint ett_lcp_internationalization_opt = -1; - -static int proto_ipcp = -1; - -static gint ett_ipcp = -1; -static gint ett_ipcp_options = -1; -static gint ett_ipcp_ipaddrs_opt = -1; -static gint ett_ipcp_compressprot_opt = -1; - -static int proto_osicp = -1; - -static gint ett_osicp = -1; -static gint ett_osicp_options = -1; -static gint ett_osicp_align_npdu_opt = -1; - -static int proto_ccp = -1; - -static gint ett_ccp = -1; -static gint ett_ccp_options = -1; -static gint ett_ccp_stac_opt = -1; -static gint ett_ccp_mppc_opt = -1; -static gint ett_ccp_bsdcomp_opt = -1; -static gint ett_ccp_lzsdcp_opt = -1; -static gint ett_ccp_mvrca_opt = -1; -static gint ett_ccp_deflate_opt = -1; - -static int proto_cbcp = -1; - -static gint ett_cbcp = -1; -static gint ett_cbcp_options = -1; -static gint ett_cbcp_callback_opt = -1; -static gint ett_cbcp_callback_opt_addr = -1; - -static int proto_bacp = -1; - -static gint ett_bacp = -1; -static gint ett_bacp_options = -1; -static gint ett_bacp_favored_peer_opt = -1; - -static int proto_bap = -1; - -static gint ett_bap = -1; -static gint ett_bap_options = -1; -static gint ett_bap_link_type_opt = -1; -static gint ett_bap_phone_delta_opt = -1; -static gint ett_bap_phone_delta_subopt = -1; -static gint ett_bap_call_status_opt = -1; - -static int proto_comp_data = -1; - -static gint ett_comp_data = -1; - -static int proto_pppmuxcp = -1; - -static gint ett_pppmuxcp = -1; -static gint ett_pppmuxcp_options = -1; - -static int proto_pppmux = -1; - -static gint ett_pppmux = -1; -static gint ett_pppmux_subframe = -1; -static gint ett_pppmux_subframe_hdr = -1; -static gint ett_pppmux_subframe_flags = -1; -static gint ett_pppmux_subframe_info = -1; - -static int proto_mp = -1; -static int hf_mp_frag_first = -1; -static int hf_mp_frag_last = -1; -static int hf_mp_sequence_num = -1; - -static int ett_mp = -1; -static int ett_mp_flags = -1; - -static int proto_mplscp = -1; -static gint ett_mplscp = -1; -static gint ett_mplscp_options = -1; - -static int proto_cdpcp = -1; -static gint ett_cdpcp = -1; -static gint ett_cdpcp_options = -1; - -static int proto_pap = -1; /* PAP vars */ -static gint ett_pap = -1; -static gint ett_pap_data = -1; -static gint ett_pap_peer_id = -1; -static gint ett_pap_password = -1; -static gint ett_pap_message = -1; - -static int proto_chap = -1; /* CHAP vars */ -static gint ett_chap = -1; -static gint ett_chap_data = -1; -static gint ett_chap_value = -1; -static gint ett_chap_name = -1; -static gint ett_chap_message = -1; - -static int proto_ipv6cp = -1; /* IPv6CP vars */ - -static gint ett_ipv6cp = -1; -static gint ett_ipv6cp_options = -1; -static gint ett_ipv6cp_if_id_opt = -1; -static gint ett_ipv6cp_compressprot_opt = -1; - -static dissector_table_t ppp_subdissector_table; -static dissector_handle_t chdlc_handle; -static dissector_handle_t data_handle; - -/* options */ -static gint ppp_fcs_decode = 0; /* 0 = No FCS, 1 = 16 bit FCS, 2 = 32 bit FCS */ -#define NO_FCS 0 -#define FCS_16 1 -#define FCS_32 2 - -const enum_val_t fcs_options[] = { - {"none", "None", NO_FCS}, - {"16-bit", "16-Bit", FCS_16}, - {"32-bit", "32-Bit", FCS_32}, - {NULL, NULL, -1} -}; - -gboolean ppp_vj_decomp = TRUE; /* Default to VJ header decompression */ - -/* - * For Default Protocol ID negotiated with PPPMuxCP. We need to - * this ID so that if the first subframe doesn't have protocol - * ID, we can use it - */ - -static guint pppmux_def_prot_id = 0; - -/* PPP definitions */ - -/* - * Used by the GTP dissector as well. - */ -const value_string ppp_vals[] = { - {PPP_PADDING, "Padding Protocol" }, - {PPP_ROHC_SCID, "ROHC small-CID" }, - {PPP_ROHC_LCID, "ROHC large-CID" }, - {PPP_IP, "IP" }, - {PPP_OSI, "OSI" }, - {PPP_DEC4, "DECnet Phase IV" }, - {PPP_AT, "Appletalk" }, - {PPP_IPX, "Netware IPX/SPX"}, - {PPP_VJC_COMP, "VJ compressed TCP"}, - {PPP_VJC_UNCOMP,"VJ uncompressed TCP"}, - {PPP_BPDU, "Bridging PDU"}, - {PPP_ST, "Stream Protocol (ST-II)" }, - {PPP_VINES, "Vines" }, - {PPP_AT_EDDP, "AppleTalk EDDP" }, - {PPP_AT_SB, "AppleTalk SmartBuffered" }, - {PPP_MP, "Multilink"}, - {PPP_NB, "NETBIOS Framing" }, - {PPP_CISCO, "Cisco Systems" }, - {PPP_ASCOM, "Ascom Timeplex" }, - {PPP_LBLB, "Fujitsu Link Backup and Load Balancing" }, - {PPP_RL, "DCA Remote Lan" }, - {PPP_SDTP, "Serial Data Transport Protocol" }, - {PPP_LLC, "SNA over LLC" }, - {PPP_SNA, "SNA" }, - {PPP_IPV6HC, "IPv6 Header Compression " }, - {PPP_KNX, "KNX Bridging Data" }, - {PPP_ENCRYPT, "Encryption" }, - {PPP_ILE, "Individual Link Encryption" }, - {PPP_IPV6, "IPv6" }, - {PPP_MUX, "PPP Multiplexing"}, - {PPP_RTP_FH, "RTP IPHC Full Header" }, - {PPP_RTP_CTCP, "RTP IPHC Compressed TCP" }, - {PPP_RTP_CNTCP, "RTP IPHC Compressed Non TCP" }, - {PPP_RTP_CUDP8, "RTP IPHC Compressed UDP 8" }, - {PPP_RTP_CRTP8, "RTP IPHC Compressed RTP 8" }, - {PPP_STAMPEDE, "Stampede Bridging" }, - {PPP_MPPLUS, "MP+ Protocol" }, - {PPP_NTCITS_IPI,"NTCITS IPI" }, - {PPP_ML_SLCOMP, "single link compression in multilink" }, - {PPP_COMP, "compressed packet" }, - {PPP_STP_HELLO, "802.1d Hello Packet" }, - {PPP_IBM_SR, "IBM Source Routing BPDU" }, - {PPP_DEC_LB, "DEC LANBridge100 Spanning Tree"}, - {PPP_CDP, "Cisco Discovery Protocol" }, - {PPP_NETCS, "Netcs Twin Routing" }, - {PPP_STP, "Scheduled Transfer Protocol" }, - {PPP_EDP, "Extreme Discovery Protocol" }, - {PPP_OSCP, "Optical Supervisory Channel Protocol" }, - {PPP_OSCP2, "Optical Supervisory Channel Protocol" }, - {PPP_LUXCOM, "Luxcom" }, - {PPP_SIGMA, "Sigma Network Systems" }, - {PPP_ACSP, "Apple Client Server Protocol" }, - {PPP_MPLS_UNI, "MPLS Unicast"}, - {PPP_MPLS_MULTI, "MPLS Multicast"}, - {PPP_P12844, "IEEE p1284.4 standard - data packets" }, - {PPP_ETSI, "ETSI TETRA Networks Procotol Type 1" }, - {PPP_MFTP, "Multichannel Flow Treatment Protocol" }, - {PPP_RTP_CTCPND,"RTP IPHC Compressed TCP No Delta" }, - {PPP_RTP_CS, "RTP IPHC Context State" }, - {PPP_RTP_CUDP16,"RTP IPHC Compressed UDP 16" }, - {PPP_RTP_CRDP16,"RTP IPHC Compressed RTP 16" }, - {PPP_CCCP, "Cray Communications Control Protocol" }, - {PPP_CDPD_MNRP, "CDPD Mobile Network Registration Protocol" }, - {PPP_EXPANDAP, "Expand accelarator protocol" }, - {PPP_ODSICP, "ODSICP NCP" }, - {PPP_DOCSIS, "DOCSIS DLL" }, - {PPP_LZS, "Stacker LZS" }, - {PPP_REFTEK, "RefTek Protocol" }, - {PPP_FC, "Fibre Channel" }, - {PPP_EMIT, "EMIT Protocols" }, - {PPP_IPCP, "IP Control Protocol" }, - {PPP_OSICP, "OSI Control Protocol" }, - {PPP_XNSIDPCP, "Xerox NS IDP Control Protocol" }, - {PPP_DECNETCP, "DECnet Phase IV Control Protocol" }, - {PPP_ATCP, "AppleTalk Control Protocol" }, - {PPP_IPXCP, "IPX Control Protocol" }, - {PPP_BRIDGENCP, "Bridging NCP" }, - {PPP_SPCP, "Stream Protocol Control Protocol" }, - {PPP_BVCP, "Banyan Vines Control Protocol" }, - {PPP_MLCP, "Multi-Link Control Protocol" }, - {PPP_NBCP, "NETBIOS Framing Control Protocol" }, - {PPP_CISCOCP, "Cisco Systems Control Protocol" }, - {PPP_ASCOMCP, "Ascom Timeplex" }, - {PPP_LBLBCP, "Fujitsu LBLB Control Protocol" }, - {PPP_RLNCP, "DCA Remote Lan Network Control Protocol" }, - {PPP_SDCP, "Serial Data Control Protocol" }, - {PPP_LLCCP, "SNA over LLC Control Protocol" }, - {PPP_SNACP, "SNA Control Protocol" }, - {PPP_KNXCP, "KNX Bridging Control Protocol" }, - {PPP_ECP, "Encryption Control Protocol" }, - {PPP_ILECP, "Individual Encryption Control Protocol" }, - {PPP_IPV6CP, "IPv6 Control Protocol" }, - {PPP_MUXCP, "PPPMux Control Protocol"}, - {PPP_STAMPEDECP,"Stampede Bridging Control Protocol" }, - {PPP_MPPCP, "MP+ Contorol Protocol" }, - {PPP_IPICP, "NTCITS IPI Control Protocol" }, - {PPP_SLCC, "single link compression in multilink control" }, - {PPP_CCP, "Compression Control Protocol" }, - {PPP_CDPCP, "CDP Control Protocol" }, - {PPP_NETCSCP, "Netcs Twin Routing" }, - {PPP_STPCP, "STP - Control Protocol" }, - {PPP_EDPCP, "EDP Control Protocol" }, - {PPP_ACSPC, "Apple Client Server Protocol Control" }, - {PPP_MPLSCP, "MPLS Control Protocol" }, - {PPP_P12844CP, "IEEE p1284.4 standard - Protocol Control" }, - {PPP_ETSICP, "ETSI TETRA TNP1 Control Protocol" }, - {PPP_MFTPCP, "Multichannel Flow Treatment Protocol" }, - {PPP_LCP, "Link Control Protocol" }, - {PPP_PAP, "Password Authentication Protocol" }, - {PPP_LQR, "Link Quality Report protocol" }, - {PPP_SPAP, "Shiva Password Authentication Protocol" }, - {PPP_CBCP, "Callback Control Protocol" }, - {PPP_BACP, "Bandwidth Allocation Control Protocol" }, - {PPP_BAP, "Bandwidth Allocation Protocol" }, - {PPP_CONTCP, "Container Control Protocol" }, - {PPP_CHAP, "Challenge Handshake Authentication Protocol" }, - {PPP_RSAAP, "RSA Authentication Protocol" }, - {PPP_EAP, "Extensible Authentication Protocol" }, - {PPP_SIEP, "Mitsubishi Security Information Exchange Protocol"}, - {PPP_SBAP, "Stampede Bridging Authorization Protocol" }, - {PPP_PRPAP, "Proprietary Authentication Protocol" }, - {PPP_PRPAP2, "Proprietary Authentication Protocol" }, - {PPP_PRPNIAP, "Proprietary Node ID Authentication Protocol" }, - {0, NULL } -}; - -/* CP (LCP, IPCP, etc.) codes. - * from pppd fsm.h - */ -#define CONFREQ 1 /* Configuration Request */ -#define CONFACK 2 /* Configuration Ack */ -#define CONFNAK 3 /* Configuration Nak */ -#define CONFREJ 4 /* Configuration Reject */ -#define TERMREQ 5 /* Termination Request */ -#define TERMACK 6 /* Termination Ack */ -#define CODEREJ 7 /* Code Reject */ - -static const value_string cp_vals[] = { - {CONFREQ, "Configuration Request" }, - {CONFACK, "Configuration Ack" }, - {CONFNAK, "Configuration Nak" }, - {CONFREJ, "Configuration Reject" }, - {TERMREQ, "Termination Request" }, - {TERMACK, "Termination Ack" }, - {CODEREJ, "Code Reject" }, - {0, NULL } }; - -/* - * LCP-specific packet types. - */ -#define PROTREJ 8 /* Protocol Reject */ -#define ECHOREQ 9 /* Echo Request */ -#define ECHOREP 10 /* Echo Reply */ -#define DISCREQ 11 /* Discard Request */ -#define IDENT 12 /* Identification */ -#define TIMEREMAIN 13 /* Time remaining */ - -/* - * CCP-specific packet types. - */ -#define RESETREQ 14 /* Reset Request */ -#define RESETACK 15 /* Reset Ack */ - -/* - * CBCP-specific packet types. - */ -#define CBREQ 1 /* Callback Request */ -#define CBRES 2 /* Callback Response */ -#define CBACK 3 /* Callback Ack */ - -#define CBCP_OPT 6 /* Use callback control protocol */ - -/* - * BAP-specific packet types. - */ -#define BAP_CREQ 1 /* Call Request */ -#define BAP_CRES 2 /* Call Response */ -#define BAP_CBREQ 3 /* Callback Request */ -#define BAP_CBRES 4 /* Callback Response */ -#define BAP_LDQREQ 5 /* Link Drop Query Request */ -#define BAP_LDQRES 6 /* Link Drop Query Response */ -#define BAP_CSI 7 /* Call Status Indication */ -#define BAP_CSRES 8 /* Call Status Response */ - -static const value_string lcp_vals[] = { - {CONFREQ, "Configuration Request" }, - {CONFACK, "Configuration Ack" }, - {CONFNAK, "Configuration Nak" }, - {CONFREJ, "Configuration Reject" }, - {TERMREQ, "Termination Request" }, - {TERMACK, "Termination Ack" }, - {CODEREJ, "Code Reject" }, - {PROTREJ, "Protocol Reject" }, - {ECHOREQ, "Echo Request" }, - {ECHOREP, "Echo Reply" }, - {DISCREQ, "Discard Request" }, - {IDENT, "Identification" }, - {TIMEREMAIN, "Time Remaining" }, - {0, NULL } -}; - -static const value_string ccp_vals[] = { - {CONFREQ, "Configuration Request" }, - {CONFACK, "Configuration Ack" }, - {CONFNAK, "Configuration Nak" }, - {CONFREJ, "Configuration Reject" }, - {TERMREQ, "Termination Request" }, - {TERMACK, "Termination Ack" }, - {CODEREJ, "Code Reject" }, - {RESETREQ, "Reset Request" }, - {RESETACK, "Reset Ack" }, - {0, NULL } -}; - -static const value_string cbcp_vals[] = { - {CBREQ, "Callback Request" }, - {CBRES, "Callback Response" }, - {CBACK, "Callback Ack" }, - {0, NULL } -}; - -static const value_string bap_vals[] = { - {BAP_CREQ, "Call Request" }, - {BAP_CRES, "Call Response" }, - {BAP_CBREQ, "Callback Request" }, - {BAP_CBRES, "Callback Response" }, - {BAP_LDQREQ, "Link Drop Query Request" }, - {BAP_LDQRES, "Link Drop Query Response" }, - {BAP_CSI, "Call Status Indication" }, - {BAP_CSRES, "Call Status Response" }, - {0, NULL } -}; - -#define BAP_RESP_CODE_REQACK 0x00 -#define BAP_RESP_CODE_REQNAK 0x01 -#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. (OSICP) - */ -#define CI_OSICP_ALIGN_NPDU 1 /* Alignment of the OSI NPDU (RFC 1377) */ - -static void dissect_osicp_align_npdu_opt(const ip_tcp_opt *optp, tvbuff_t *tvb, - int offset, guint length, packet_info *pinfo, - proto_tree *tree); - -static const ip_tcp_opt osicp_opts[] = { - { - CI_OSICP_ALIGN_NPDU, - "Align-NPDU", - &ett_osicp_align_npdu_opt, - FIXED_LENGTH, - 3, - dissect_osicp_align_npdu_opt - } -}; - -#define N_OSICP_OPTS (sizeof osicp_opts / sizeof osicp_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]) - -/* -******************************************************************************* -* DETAILS : Calculate a new FCS-16 given the current FCS-16 and the new data. -******************************************************************************* -*/ -static guint16 -fcs16(tvbuff_t * tvbuff) -{ - guint len = tvb_length(tvbuff)-2; - - /* Check for Invalid Length */ - if (len == 0) - return (0x0000); - return crc16_ccitt_tvb(tvbuff, len); -} - -/* -******************************************************************************* -* 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_ccitt_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(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_osicp_align_npdu_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 alignment; - - tf = proto_tree_add_text(tree, tvb, offset, length, "%s", optp->name); - field_tree = proto_item_add_subtree(tf, *optp->subtree_index); - - alignment = tvb_get_guint8(tvb, offset + 2); - proto_tree_add_text(field_tree, tvb, offset + 2, 1, - "Alignment: %u", alignment); -} - -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 1377. - */ -static void -dissect_osicp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) -{ - dissect_cp(tvb, proto_osicp, ett_osicp, cp_vals, ett_osicp_options, - osicp_opts, N_OSICP_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_osicp(void) -{ - static gint *ett[] = { - &ett_osicp, - &ett_osicp_options, - &ett_osicp_align_npdu_opt, - }; - - proto_osicp = proto_register_protocol("PPP OSI Control Protocol", "PPP OSICP", - "osicp"); - proto_register_subtree_array(ett, array_length(ett)); -} - -void -proto_reg_handoff_osicp(void) -{ - dissector_handle_t osicp_handle; - - osicp_handle = create_dissector_handle(dissect_osicp, proto_osicp); - dissector_add("ppp.protocol", PPP_OSICP, osicp_handle); - - /* - * See above comment about NDISWAN for an explanation of why we're - * registering with the "ethertype" dissector table. - */ - dissector_add("ethertype", PPP_OSICP, osicp_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); -} |