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authorrpaulo <rpaulo@FreeBSD.org>2009-03-20 13:27:51 +0000
committerrpaulo <rpaulo@FreeBSD.org>2009-03-20 13:27:51 +0000
commit04b1d6babecbe3eed463c150b6e933a2b6d342a9 (patch)
tree36afae3dff76dde8d1cee5971ff7f1bc4922ad0f /contrib/tcpdump/print-ppp.c
parent3b74598d7ea581deadb14ec8ba1c77c14295a7c8 (diff)
downloadFreeBSD-src-04b1d6babecbe3eed463c150b6e933a2b6d342a9.zip
FreeBSD-src-04b1d6babecbe3eed463c150b6e933a2b6d342a9.tar.gz
Flatten vendor/tcpdump and remove keyword expansion.
Diffstat (limited to 'contrib/tcpdump/print-ppp.c')
-rw-r--r--contrib/tcpdump/print-ppp.c1757
1 files changed, 0 insertions, 1757 deletions
diff --git a/contrib/tcpdump/print-ppp.c b/contrib/tcpdump/print-ppp.c
deleted file mode 100644
index 1e99c15..0000000
--- a/contrib/tcpdump/print-ppp.c
+++ /dev/null
@@ -1,1757 +0,0 @@
-/*
- * Copyright (c) 1990, 1991, 1993, 1994, 1995, 1996, 1997
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that: (1) source code distributions
- * retain the above copyright notice and this paragraph in its entirety, (2)
- * distributions including binary code include the above copyright notice and
- * this paragraph in its entirety in the documentation or other materials
- * provided with the distribution, and (3) all advertising materials mentioning
- * features or use of this software display the following acknowledgement:
- * ``This product includes software developed by the University of California,
- * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
- * the University nor the names of its contributors may be used to endorse
- * or promote products derived from this software without specific prior
- * written permission.
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
- *
- * Extensively modified by Motonori Shindo (mshindo@mshindo.net) for more
- * complete PPP support.
- */
-
-/*
- * TODO:
- * o resolve XXX as much as possible
- * o MP support
- * o BAP support
- */
-
-#ifndef lint
-static const char rcsid[] _U_ =
- "@(#) $Header: /tcpdump/master/tcpdump/print-ppp.c,v 1.108.2.6 2005/12/05 11:40:36 hannes Exp $ (LBL)";
-#endif
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include <tcpdump-stdinc.h>
-
-#ifdef __bsdi__
-#include <net/slcompress.h>
-#include <net/if_ppp.h>
-#endif
-
-#include <pcap.h>
-#include <stdio.h>
-#include <stdlib.h>
-
-#include "interface.h"
-#include "extract.h"
-#include "addrtoname.h"
-#include "ppp.h"
-#include "chdlc.h"
-#include "ethertype.h"
-#include "oui.h"
-
-/*
- * The following constatns are defined by IANA. Please refer to
- * http://www.isi.edu/in-notes/iana/assignments/ppp-numbers
- * for the up-to-date information.
- */
-
-/* Protocol Codes defined in ppp.h */
-
-struct tok ppptype2str[] = {
- { PPP_IP, "IP" },
- { PPP_OSI, "OSI" },
- { PPP_NS, "NS" },
- { PPP_DECNET, "DECNET" },
- { PPP_APPLE, "APPLE" },
- { PPP_IPX, "IPX" },
- { PPP_VJC, "VJC IP" },
- { PPP_VJNC, "VJNC IP" },
- { PPP_BRPDU, "BRPDU" },
- { PPP_STII, "STII" },
- { PPP_VINES, "VINES" },
- { PPP_MPLS_UCAST, "MPLS" },
- { PPP_MPLS_MCAST, "MPLS" },
- { PPP_COMP, "Compressed"},
- { PPP_ML, "MLPPP"},
- { PPP_IPV6, "IP6"},
-
- { PPP_HELLO, "HELLO" },
- { PPP_LUXCOM, "LUXCOM" },
- { PPP_SNS, "SNS" },
- { PPP_IPCP, "IPCP" },
- { PPP_OSICP, "OSICP" },
- { PPP_NSCP, "NSCP" },
- { PPP_DECNETCP, "DECNETCP" },
- { PPP_APPLECP, "APPLECP" },
- { PPP_IPXCP, "IPXCP" },
- { PPP_STIICP, "STIICP" },
- { PPP_VINESCP, "VINESCP" },
- { PPP_IPV6CP, "IP6CP" },
- { PPP_MPLSCP, "MPLSCP" },
-
- { PPP_LCP, "LCP" },
- { PPP_PAP, "PAP" },
- { PPP_LQM, "LQM" },
- { PPP_CHAP, "CHAP" },
- { PPP_EAP, "EAP" },
- { PPP_SPAP, "SPAP" },
- { PPP_SPAP_OLD, "Old-SPAP" },
- { PPP_BACP, "BACP" },
- { PPP_BAP, "BAP" },
- { PPP_MPCP, "MLPPP-CP" },
- { 0, NULL }
-};
-
-/* Control Protocols (LCP/IPCP/CCP etc.) Codes defined in RFC 1661 */
-
-#define CPCODES_VEXT 0 /* Vendor-Specific (RFC2153) */
-#define CPCODES_CONF_REQ 1 /* Configure-Request */
-#define CPCODES_CONF_ACK 2 /* Configure-Ack */
-#define CPCODES_CONF_NAK 3 /* Configure-Nak */
-#define CPCODES_CONF_REJ 4 /* Configure-Reject */
-#define CPCODES_TERM_REQ 5 /* Terminate-Request */
-#define CPCODES_TERM_ACK 6 /* Terminate-Ack */
-#define CPCODES_CODE_REJ 7 /* Code-Reject */
-#define CPCODES_PROT_REJ 8 /* Protocol-Reject (LCP only) */
-#define CPCODES_ECHO_REQ 9 /* Echo-Request (LCP only) */
-#define CPCODES_ECHO_RPL 10 /* Echo-Reply (LCP only) */
-#define CPCODES_DISC_REQ 11 /* Discard-Request (LCP only) */
-#define CPCODES_ID 12 /* Identification (LCP only) RFC1570 */
-#define CPCODES_TIME_REM 13 /* Time-Remaining (LCP only) RFC1570 */
-#define CPCODES_RESET_REQ 14 /* Reset-Request (CCP only) RFC1962 */
-#define CPCODES_RESET_REP 15 /* Reset-Reply (CCP only) */
-
-struct tok cpcodes[] = {
- {CPCODES_VEXT, "Vendor-Extension"}, /* RFC2153 */
- {CPCODES_CONF_REQ, "Conf-Request"},
- {CPCODES_CONF_ACK, "Conf-Ack"},
- {CPCODES_CONF_NAK, "Conf-Nack"},
- {CPCODES_CONF_REJ, "Conf-Reject"},
- {CPCODES_TERM_REQ, "Term-Request"},
- {CPCODES_TERM_ACK, "Term-Ack"},
- {CPCODES_CODE_REJ, "Code-Reject"},
- {CPCODES_PROT_REJ, "Prot-Reject"},
- {CPCODES_ECHO_REQ, "Echo-Request"},
- {CPCODES_ECHO_RPL, "Echo-Reply"},
- {CPCODES_DISC_REQ, "Disc-Req"},
- {CPCODES_ID, "Ident"}, /* RFC1570 */
- {CPCODES_TIME_REM, "Time-Rem"}, /* RFC1570 */
- {CPCODES_RESET_REQ, "Reset-Req"}, /* RFC1962 */
- {CPCODES_RESET_REP, "Reset-Ack"}, /* RFC1962 */
- {0, NULL}
-};
-
-/* LCP Config Options */
-
-#define LCPOPT_VEXT 0
-#define LCPOPT_MRU 1
-#define LCPOPT_ACCM 2
-#define LCPOPT_AP 3
-#define LCPOPT_QP 4
-#define LCPOPT_MN 5
-#define LCPOPT_DEP6 6
-#define LCPOPT_PFC 7
-#define LCPOPT_ACFC 8
-#define LCPOPT_FCSALT 9
-#define LCPOPT_SDP 10
-#define LCPOPT_NUMMODE 11
-#define LCPOPT_DEP12 12
-#define LCPOPT_CBACK 13
-#define LCPOPT_DEP14 14
-#define LCPOPT_DEP15 15
-#define LCPOPT_DEP16 16
-#define LCPOPT_MLMRRU 17
-#define LCPOPT_MLSSNHF 18
-#define LCPOPT_MLED 19
-#define LCPOPT_PROP 20
-#define LCPOPT_DCEID 21
-#define LCPOPT_MPP 22
-#define LCPOPT_LD 23
-#define LCPOPT_LCPAOPT 24
-#define LCPOPT_COBS 25
-#define LCPOPT_PE 26
-#define LCPOPT_MLHF 27
-#define LCPOPT_I18N 28
-#define LCPOPT_SDLOS 29
-#define LCPOPT_PPPMUX 30
-
-#define LCPOPT_MIN LCPOPT_VEXT
-#define LCPOPT_MAX LCPOPT_PPPMUX
-
-static const char *lcpconfopts[] = {
- "Vend-Ext", /* (0) */
- "MRU", /* (1) */
- "ACCM", /* (2) */
- "Auth-Prot", /* (3) */
- "Qual-Prot", /* (4) */
- "Magic-Num", /* (5) */
- "deprecated(6)", /* used to be a Quality Protocol */
- "PFC", /* (7) */
- "ACFC", /* (8) */
- "FCS-Alt", /* (9) */
- "SDP", /* (10) */
- "Num-Mode", /* (11) */
- "deprecated(12)", /* used to be a Multi-Link-Procedure*/
- "Call-Back", /* (13) */
- "deprecated(14)", /* used to be a Connect-Time */
- "deprecated(15)", /* used to be a Compund-Frames */
- "deprecated(16)", /* used to be a Nominal-Data-Encap */
- "MRRU", /* (17) */
- "12-Bit seq #", /* (18) */
- "End-Disc", /* (19) */
- "Proprietary", /* (20) */
- "DCE-Id", /* (21) */
- "MP+", /* (22) */
- "Link-Disc", /* (23) */
- "LCP-Auth-Opt", /* (24) */
- "COBS", /* (25) */
- "Prefix-elision", /* (26) */
- "Multilink-header-Form",/* (27) */
- "I18N", /* (28) */
- "SDL-over-SONET/SDH", /* (29) */
- "PPP-Muxing", /* (30) */
-};
-
-/* ECP - to be supported */
-
-/* CCP Config Options */
-
-#define CCPOPT_OUI 0 /* RFC1962 */
-#define CCPOPT_PRED1 1 /* RFC1962 */
-#define CCPOPT_PRED2 2 /* RFC1962 */
-#define CCPOPT_PJUMP 3 /* RFC1962 */
-/* 4-15 unassigned */
-#define CCPOPT_HPPPC 16 /* RFC1962 */
-#define CCPOPT_STACLZS 17 /* RFC1974 */
-#define CCPOPT_MPPC 18 /* RFC2118 */
-#define CCPOPT_GFZA 19 /* RFC1962 */
-#define CCPOPT_V42BIS 20 /* RFC1962 */
-#define CCPOPT_BSDCOMP 21 /* RFC1977 */
-/* 22 unassigned */
-#define CCPOPT_LZSDCP 23 /* RFC1967 */
-#define CCPOPT_MVRCA 24 /* RFC1975 */
-#define CCPOPT_DEC 25 /* RFC1976 */
-#define CCPOPT_DEFLATE 26 /* RFC1979 */
-/* 27-254 unassigned */
-#define CCPOPT_RESV 255 /* RFC1962 */
-
-const struct tok ccpconfopts_values[] = {
- { CCPOPT_OUI, "OUI" },
- { CCPOPT_PRED1, "Pred-1" },
- { CCPOPT_PRED2, "Pred-2" },
- { CCPOPT_PJUMP, "Puddle" },
- { CCPOPT_HPPPC, "HP-PPC" },
- { CCPOPT_STACLZS, "Stac-LZS" },
- { CCPOPT_MPPC, "MPPC" },
- { CCPOPT_GFZA, "Gand-FZA" },
- { CCPOPT_V42BIS, "V.42bis" },
- { CCPOPT_BSDCOMP, "BSD-Comp" },
- { CCPOPT_LZSDCP, "LZS-DCP" },
- { CCPOPT_MVRCA, "MVRCA" },
- { CCPOPT_DEC, "DEC" },
- { CCPOPT_DEFLATE, "Deflate" },
- { CCPOPT_RESV, "Reserved"},
- {0, NULL}
-};
-
-/* BACP Config Options */
-
-#define BACPOPT_FPEER 1 /* RFC2125 */
-
-const struct tok bacconfopts_values[] = {
- { BACPOPT_FPEER, "Favored-Peer" },
- {0, NULL}
-};
-
-
-/* SDCP - to be supported */
-
-/* IPCP Config Options */
-#define IPCPOPT_2ADDR 1 /* RFC1172, RFC1332 (deprecated) */
-#define IPCPOPT_IPCOMP 2 /* RFC1332 */
-#define IPCPOPT_ADDR 3 /* RFC1332 */
-#define IPCPOPT_MOBILE4 4 /* RFC2290 */
-#define IPCPOPT_PRIDNS 129 /* RFC1877 */
-#define IPCPOPT_PRINBNS 130 /* RFC1877 */
-#define IPCPOPT_SECDNS 131 /* RFC1877 */
-#define IPCPOPT_SECNBNS 132 /* RFC1877 */
-
-struct tok ipcpopt_values[] = {
- { IPCPOPT_2ADDR, "IP-Addrs" },
- { IPCPOPT_IPCOMP, "IP-Comp" },
- { IPCPOPT_ADDR, "IP-Addr" },
- { IPCPOPT_MOBILE4, "Home-Addr" },
- { IPCPOPT_PRIDNS, "Pri-DNS" },
- { IPCPOPT_PRINBNS, "Pri-NBNS" },
- { IPCPOPT_SECDNS, "Sec-DNS" },
- { IPCPOPT_SECNBNS, "Sec-NBNS" },
- { 0, NULL }
-};
-
-#define IPCPOPT_IPCOMP_HDRCOMP 0x61 /* rfc3544 */
-#define IPCPOPT_IPCOMP_MINLEN 14
-
-struct tok ipcpopt_compproto_values[] = {
- { PPP_VJC, "VJ-Comp" },
- { IPCPOPT_IPCOMP_HDRCOMP, "IP Header Compression" },
- { 0, NULL }
-};
-
-struct tok ipcpopt_compproto_subopt_values[] = {
- { 1, "RTP-Compression" },
- { 2, "Enhanced RTP-Compression" },
- { 0, NULL }
-};
-
-/* IP6CP Config Options */
-#define IP6CP_IFID 1
-
-struct tok ip6cpopt_values[] = {
- { IP6CP_IFID, "Interface-ID" },
- { 0, NULL }
-};
-
-/* ATCP - to be supported */
-/* OSINLCP - to be supported */
-/* BVCP - to be supported */
-/* BCP - to be supported */
-/* IPXCP - to be supported */
-/* MPLSCP - to be supported */
-
-/* Auth Algorithms */
-
-/* 0-4 Reserved (RFC1994) */
-#define AUTHALG_CHAPMD5 5 /* RFC1994 */
-#define AUTHALG_MSCHAP1 128 /* RFC2433 */
-#define AUTHALG_MSCHAP2 129 /* RFC2795 */
-
-struct tok authalg_values[] = {
- { AUTHALG_CHAPMD5, "MD5" },
- { AUTHALG_MSCHAP1, "MS-CHAPv1" },
- { AUTHALG_MSCHAP2, "MS-CHAPv2" },
- { 0, NULL }
-};
-
-/* FCS Alternatives - to be supported */
-
-/* Multilink Endpoint Discriminator (RFC1717) */
-#define MEDCLASS_NULL 0 /* Null Class */
-#define MEDCLASS_LOCAL 1 /* Locally Assigned */
-#define MEDCLASS_IPV4 2 /* Internet Protocol (IPv4) */
-#define MEDCLASS_MAC 3 /* IEEE 802.1 global MAC address */
-#define MEDCLASS_MNB 4 /* PPP Magic Number Block */
-#define MEDCLASS_PSNDN 5 /* Public Switched Network Director Number */
-
-/* PPP LCP Callback */
-#define CALLBACK_AUTH 0 /* Location determined by user auth */
-#define CALLBACK_DSTR 1 /* Dialing string */
-#define CALLBACK_LID 2 /* Location identifier */
-#define CALLBACK_E164 3 /* E.164 number */
-#define CALLBACK_X500 4 /* X.500 distinguished name */
-#define CALLBACK_CBCP 6 /* Location is determined during CBCP nego */
-
-struct tok ppp_callback_values[] = {
- { CALLBACK_AUTH, "UserAuth" },
- { CALLBACK_DSTR, "DialString" },
- { CALLBACK_LID, "LocalID" },
- { CALLBACK_E164, "E.164" },
- { CALLBACK_X500, "X.500" },
- { CALLBACK_CBCP, "CBCP" },
- { 0, NULL }
-};
-
-/* CHAP */
-
-#define CHAP_CHAL 1
-#define CHAP_RESP 2
-#define CHAP_SUCC 3
-#define CHAP_FAIL 4
-
-struct tok chapcode_values[] = {
- { CHAP_CHAL, "Challenge" },
- { CHAP_RESP, "Response" },
- { CHAP_SUCC, "Success" },
- { CHAP_FAIL, "Fail" },
- { 0, NULL}
-};
-
-/* PAP */
-
-#define PAP_AREQ 1
-#define PAP_AACK 2
-#define PAP_ANAK 3
-
-struct tok papcode_values[] = {
- { PAP_AREQ, "Auth-Req" },
- { PAP_AACK, "Auth-ACK" },
- { PAP_ANAK, "Auth-NACK" },
- { 0, NULL }
-};
-
-/* BAP */
-#define BAP_CALLREQ 1
-#define BAP_CALLRES 2
-#define BAP_CBREQ 3
-#define BAP_CBRES 4
-#define BAP_LDQREQ 5
-#define BAP_LDQRES 6
-#define BAP_CSIND 7
-#define BAP_CSRES 8
-
-static void handle_ctrl_proto (u_int proto,const u_char *p, int length);
-static void handle_chap (const u_char *p, int length);
-static void handle_pap (const u_char *p, int length);
-static void handle_bap (const u_char *p, int length);
-static void handle_mlppp(const u_char *p, int length);
-static int print_lcp_config_options (const u_char *p, int);
-static int print_ipcp_config_options (const u_char *p, int);
-static int print_ip6cp_config_options (const u_char *p, int);
-static int print_ccp_config_options (const u_char *p, int);
-static int print_bacp_config_options (const u_char *p, int);
-static void handle_ppp (u_int proto, const u_char *p, int length);
-static void ppp_hdlc(const u_char *p, int length);
-
-/* generic Control Protocol (e.g. LCP, IPCP, CCP, etc.) handler */
-static void
-handle_ctrl_proto(u_int proto, const u_char *pptr, int length)
-{
- const char *typestr;
- u_int code, len;
- int (*pfunc)(const u_char *, int);
- int x, j;
- const u_char *tptr;
-
- tptr=pptr;
-
- typestr = tok2str(ppptype2str, "unknown ctrl-proto (0x%04x)", proto);
- printf("%s, ",typestr);
-
- if (length < 4) /* FIXME weak boundary checking */
- goto trunc;
- TCHECK2(*tptr, 2);
-
- code = *tptr++;
-
- printf("%s (0x%02x), id %u, length %u",
- tok2str(cpcodes, "Unknown Opcode",code),
- code,
- *tptr++, /* ID */
- length+2);
-
- if (!vflag)
- return;
-
- if (length <= 4)
- return; /* there may be a NULL confreq etc. */
-
- TCHECK2(*tptr, 2);
- len = EXTRACT_16BITS(tptr);
- tptr += 2;
-
- printf("\n\tencoded length %u (=Option(s) length %u)",len,len-4);
-
- if (vflag>1)
- print_unknown_data(pptr-2,"\n\t",6);
-
-
- switch (code) {
- case CPCODES_VEXT:
- if (length < 11)
- break;
- TCHECK2(*tptr, 4);
- printf("\n\t Magic-Num 0x%08x", EXTRACT_32BITS(tptr));
- tptr += 4;
- TCHECK2(*tptr, 3);
- printf(" Vendor: %s (%u)",
- tok2str(oui_values,"Unknown",EXTRACT_24BITS(tptr)),
- EXTRACT_24BITS(tptr));
- /* XXX: need to decode Kind and Value(s)? */
- break;
- case CPCODES_CONF_REQ:
- case CPCODES_CONF_ACK:
- case CPCODES_CONF_NAK:
- case CPCODES_CONF_REJ:
- x = len - 4; /* Code(1), Identifier(1) and Length(2) */
- do {
- switch (proto) {
- case PPP_LCP:
- pfunc = print_lcp_config_options;
- break;
- case PPP_IPCP:
- pfunc = print_ipcp_config_options;
- break;
- case PPP_IPV6CP:
- pfunc = print_ip6cp_config_options;
- break;
- case PPP_CCP:
- pfunc = print_ccp_config_options;
- break;
- case PPP_BACP:
- pfunc = print_bacp_config_options;
- break;
- default:
- /*
- * No print routine for the options for
- * this protocol.
- */
- pfunc = NULL;
- break;
- }
-
- if (pfunc == NULL) /* catch the above null pointer if unknown CP */
- break;
-
- if ((j = (*pfunc)(tptr, len)) == 0)
- break;
- x -= j;
- tptr += j;
- } while (x > 0);
- break;
-
- case CPCODES_TERM_REQ:
- case CPCODES_TERM_ACK:
- /* XXX: need to decode Data? */
- break;
- case CPCODES_CODE_REJ:
- /* XXX: need to decode Rejected-Packet? */
- break;
- case CPCODES_PROT_REJ:
- if (length < 6)
- break;
- TCHECK2(*tptr, 2);
- printf("\n\t Rejected %s Protocol (0x%04x)",
- tok2str(ppptype2str,"unknown", EXTRACT_16BITS(tptr)),
- EXTRACT_16BITS(tptr));
- /* XXX: need to decode Rejected-Information? - hexdump for now */
- if (len > 6) {
- printf("\n\t Rejected Packet");
- print_unknown_data(tptr+2,"\n\t ",len-2);
- }
- break;
- case CPCODES_ECHO_REQ:
- case CPCODES_ECHO_RPL:
- case CPCODES_DISC_REQ:
- if (length < 8)
- break;
- TCHECK2(*tptr, 4);
- printf("\n\t Magic-Num 0x%08x", EXTRACT_32BITS(tptr));
- /* XXX: need to decode Data? - hexdump for now */
- if (len > 8) {
- printf("\n\t -----trailing data-----");
- TCHECK2(tptr[4], len-8);
- print_unknown_data(tptr+4,"\n\t ",len-8);
- }
- break;
- case CPCODES_ID:
- if (length < 8)
- break;
- TCHECK2(*tptr, 4);
- printf("\n\t Magic-Num 0x%08x", EXTRACT_32BITS(tptr));
- /* RFC 1661 says this is intended to be human readable */
- if (len > 8) {
- printf("\n\t Message\n\t ");
- fn_printn(tptr+4,len-4,snapend);
- }
- break;
- case CPCODES_TIME_REM:
- if (length < 12)
- break;
- TCHECK2(*tptr, 4);
- printf("\n\t Magic-Num 0x%08x", EXTRACT_32BITS(tptr));
- TCHECK2(*(tptr + 4), 4);
- printf(", Seconds-Remaining %us", EXTRACT_32BITS(tptr + 4));
- /* XXX: need to decode Message? */
- break;
- default:
- /* XXX this is dirty but we do not get the
- * original pointer passed to the begin
- * the PPP packet */
- if (vflag <= 1)
- print_unknown_data(pptr-2,"\n\t ",length+2);
- break;
- }
- return;
-
-trunc:
- printf("[|%s]", typestr);
-}
-
-/* LCP config options */
-static int
-print_lcp_config_options(const u_char *p, int length)
-{
- int len, opt;
-
- if (length < 2)
- return 0;
- TCHECK2(*p, 2);
- len = p[1];
- opt = p[0];
- if (length < len)
- return 0;
- if (len < 2) {
- if ((opt >= LCPOPT_MIN) && (opt <= LCPOPT_MAX))
- printf("\n\t %s Option (0x%02x), length %u (bogus, should be >= 2)", lcpconfopts[opt],opt,len);
- else
- printf("\n\tunknown LCP option 0x%02x", opt);
- return 0;
- }
- if ((opt >= LCPOPT_MIN) && (opt <= LCPOPT_MAX))
- printf("\n\t %s Option (0x%02x), length %u: ", lcpconfopts[opt],opt,len);
- else {
- printf("\n\tunknown LCP option 0x%02x", opt);
- return len;
- }
-
- switch (opt) {
- case LCPOPT_VEXT:
- if (len >= 6) {
- TCHECK2(*(p + 2), 3);
- printf("Vendor: %s (%u)",
- tok2str(oui_values,"Unknown",EXTRACT_24BITS(p+2)),
- EXTRACT_24BITS(p+2));
-#if 0
- TCHECK(p[5]);
- printf(", kind: 0x%02x", p[5]);
- printf(", Value: 0x")
- for (i = 0; i < len - 6; i++) {
- TCHECK(p[6 + i]);
- printf("%02x", p[6 + i]);
- }
-#endif
- }
- break;
- case LCPOPT_MRU:
- if (len == 4) {
- TCHECK2(*(p + 2), 2);
- printf("%u", EXTRACT_16BITS(p + 2));
- }
- break;
- case LCPOPT_ACCM:
- if (len == 6) {
- TCHECK2(*(p + 2), 4);
- printf("0x%08x", EXTRACT_32BITS(p + 2));
- }
- break;
- case LCPOPT_AP:
- if (len >= 4) {
- TCHECK2(*(p + 2), 2);
- printf("%s", tok2str(ppptype2str,"Unknown Auth Proto (0x04x)",EXTRACT_16BITS(p+2)));
-
- switch (EXTRACT_16BITS(p+2)) {
- case PPP_CHAP:
- TCHECK(p[4]);
- printf(", %s",tok2str(authalg_values,"Unknown Auth Alg %u",p[4]));
- break;
- case PPP_PAP: /* fall through */
- case PPP_EAP:
- case PPP_SPAP:
- case PPP_SPAP_OLD:
- break;
- default:
- print_unknown_data(p,"\n\t",len);
- }
- }
- break;
- case LCPOPT_QP:
- if (len >= 4) {
- TCHECK2(*(p + 2), 2);
- if (EXTRACT_16BITS(p+2) == PPP_LQM)
- printf(" LQR");
- else
- printf(" unknown");
- }
- break;
- case LCPOPT_MN:
- if (len == 6) {
- TCHECK2(*(p + 2), 4);
- printf("0x%08x", EXTRACT_32BITS(p + 2));
- }
- break;
- case LCPOPT_PFC:
- break;
- case LCPOPT_ACFC:
- break;
- case LCPOPT_LD:
- if (len == 4) {
- TCHECK2(*(p + 2), 2);
- printf("0x%04x", EXTRACT_16BITS(p + 2));
- }
- break;
- case LCPOPT_CBACK:
- if (len < 3)
- break;
- TCHECK(p[2]);
- printf("Callback Operation %s (%u)",
- tok2str(ppp_callback_values,"Unknown",p[2]),
- p[2]);
- break;
- case LCPOPT_MLMRRU:
- if (len == 4) {
- TCHECK2(*(p + 2), 2);
- printf("%u", EXTRACT_16BITS(p + 2));
- }
- break;
- case LCPOPT_MLED:
- if (len < 3)
- break;
- TCHECK(p[2]);
- switch (p[2]) { /* class */
- case MEDCLASS_NULL:
- printf("Null");
- break;
- case MEDCLASS_LOCAL:
- printf("Local"); /* XXX */
- break;
- case MEDCLASS_IPV4:
- if (len != 7)
- break;
- TCHECK2(*(p + 3), 4);
- printf("IPv4 %s", ipaddr_string(p + 3));
- break;
- case MEDCLASS_MAC:
- if (len != 9)
- break;
- TCHECK(p[8]);
- printf("MAC %02x:%02x:%02x:%02x:%02x:%02x",
- p[3], p[4], p[5], p[6], p[7], p[8]);
- break;
- case MEDCLASS_MNB:
- printf("Magic-Num-Block"); /* XXX */
- break;
- case MEDCLASS_PSNDN:
- printf("PSNDN"); /* XXX */
- break;
- }
- break;
-
-/* XXX: to be supported */
-#if 0
- case LCPOPT_DEP6:
- case LCPOPT_FCSALT:
- case LCPOPT_SDP:
- case LCPOPT_NUMMODE:
- case LCPOPT_DEP12:
- case LCPOPT_DEP14:
- case LCPOPT_DEP15:
- case LCPOPT_DEP16:
- case LCPOPT_MLSSNHF:
- case LCPOPT_PROP:
- case LCPOPT_DCEID:
- case LCPOPT_MPP:
- case LCPOPT_LCPAOPT:
- case LCPOPT_COBS:
- case LCPOPT_PE:
- case LCPOPT_MLHF:
- case LCPOPT_I18N:
- case LCPOPT_SDLOS:
- case LCPOPT_PPPMUX:
- break;
-#endif
- default:
- if(vflag<2)
- print_unknown_data(&p[2],"\n\t ",len-2);
- break;
- }
-
- if (vflag>1)
- print_unknown_data(&p[2],"\n\t ",len-2); /* exclude TLV header */
-
- return len;
-
-trunc:
- printf("[|lcp]");
- return 0;
-}
-
-/* ML-PPP*/
-struct tok ppp_ml_flag_values[] = {
- { 0x80, "begin" },
- { 0x40, "end" },
- { 0, NULL }
-};
-
-static void
-handle_mlppp(const u_char *p, int length) {
-
- if (!eflag)
- printf("MLPPP, ");
-
- printf("seq 0x%03x, Flags [%s], length %u",
- (EXTRACT_16BITS(p))&0x0fff, /* only support 12-Bit sequence space for now */
- bittok2str(ppp_ml_flag_values, "none", *p & 0xc0),
- length);
-
- return;
-}
-
-/* CHAP */
-static void
-handle_chap(const u_char *p, int length)
-{
- u_int code, len;
- int val_size, name_size, msg_size;
- const u_char *p0;
- int i;
-
- p0 = p;
- if (length < 1) {
- printf("[|chap]");
- return;
- } else if (length < 4) {
- TCHECK(*p);
- printf("[|chap 0x%02x]", *p);
- return;
- }
-
- TCHECK(*p);
- code = *p;
- printf("CHAP, %s (0x%02x)",
- tok2str(chapcode_values,"unknown",code),
- code);
- p++;
-
- TCHECK(*p);
- printf(", id %u", *p); /* ID */
- p++;
-
- TCHECK2(*p, 2);
- len = EXTRACT_16BITS(p);
- p += 2;
-
- /*
- * Note that this is a generic CHAP decoding routine. Since we
- * don't know which flavor of CHAP (i.e. CHAP-MD5, MS-CHAPv1,
- * MS-CHAPv2) is used at this point, we can't decode packet
- * specifically to each algorithms. Instead, we simply decode
- * the GCD (Gratest Common Denominator) for all algorithms.
- */
- switch (code) {
- case CHAP_CHAL:
- case CHAP_RESP:
- if (length - (p - p0) < 1)
- return;
- TCHECK(*p);
- val_size = *p; /* value size */
- p++;
- if (length - (p - p0) < val_size)
- return;
- printf(", Value ");
- for (i = 0; i < val_size; i++) {
- TCHECK(*p);
- printf("%02x", *p++);
- }
- name_size = len - (p - p0);
- printf(", Name ");
- for (i = 0; i < name_size; i++) {
- TCHECK(*p);
- safeputchar(*p++);
- }
- break;
- case CHAP_SUCC:
- case CHAP_FAIL:
- msg_size = len - (p - p0);
- printf(", Msg ");
- for (i = 0; i< msg_size; i++) {
- TCHECK(*p);
- safeputchar(*p++);
- }
- break;
- }
- return;
-
-trunc:
- printf("[|chap]");
-}
-
-/* PAP (see RFC 1334) */
-static void
-handle_pap(const u_char *p, int length)
-{
- u_int code, len;
- int peerid_len, passwd_len, msg_len;
- const u_char *p0;
- int i;
-
- p0 = p;
- if (length < 1) {
- printf("[|pap]");
- return;
- } else if (length < 4) {
- TCHECK(*p);
- printf("[|pap 0x%02x]", *p);
- return;
- }
-
- TCHECK(*p);
- code = *p;
- printf("PAP, %s (0x%02x)",
- tok2str(papcode_values,"unknown",code),
- code);
- p++;
-
- TCHECK(*p);
- printf(", id %u", *p); /* ID */
- p++;
-
- TCHECK2(*p, 2);
- len = EXTRACT_16BITS(p);
- p += 2;
-
- if ((int)len > length) {
- printf(", length %u > packet size", len);
- return;
- }
- length = len;
- if (length < (p - p0)) {
- printf(", length %u < PAP header length", length);
- return;
- }
-
- switch (code) {
- case PAP_AREQ:
- if (length - (p - p0) < 1)
- return;
- TCHECK(*p);
- peerid_len = *p; /* Peer-ID Length */
- p++;
- if (length - (p - p0) < peerid_len)
- return;
- printf(", Peer ");
- for (i = 0; i < peerid_len; i++) {
- TCHECK(*p);
- safeputchar(*p++);
- }
-
- if (length - (p - p0) < 1)
- return;
- TCHECK(*p);
- passwd_len = *p; /* Password Length */
- p++;
- if (length - (p - p0) < passwd_len)
- return;
- printf(", Name ");
- for (i = 0; i < passwd_len; i++) {
- TCHECK(*p);
- safeputchar(*p++);
- }
- break;
- case PAP_AACK:
- case PAP_ANAK:
- if (length - (p - p0) < 1)
- return;
- TCHECK(*p);
- msg_len = *p; /* Msg-Length */
- p++;
- if (length - (p - p0) < msg_len)
- return;
- printf(", Msg ");
- for (i = 0; i< msg_len; i++) {
- TCHECK(*p);
- safeputchar(*p++);
- }
- break;
- }
- return;
-
-trunc:
- printf("[|pap]");
-}
-
-/* BAP */
-static void
-handle_bap(const u_char *p _U_, int length _U_)
-{
- /* XXX: to be supported!! */
-}
-
-
-/* IPCP config options */
-static int
-print_ipcp_config_options(const u_char *p, int length)
-{
- int len, opt;
- u_int compproto, ipcomp_subopttotallen, ipcomp_subopt, ipcomp_suboptlen;
-
- if (length < 2)
- return 0;
- TCHECK2(*p, 2);
- len = p[1];
- opt = p[0];
- if (length < len)
- return 0;
- if (len < 2) {
- printf("\n\t %s Option (0x%02x), length %u (bogus, should be >= 2)",
- tok2str(ipcpopt_values,"unknown",opt),
- opt,
- len);
- return 0;
- }
-
- printf("\n\t %s Option (0x%02x), length %u: ",
- tok2str(ipcpopt_values,"unknown",opt),
- opt,
- len);
-
- switch (opt) {
- case IPCPOPT_2ADDR: /* deprecated */
- if (len != 10)
- goto invlen;
- TCHECK2(*(p + 6), 4);
- printf("src %s, dst %s",
- ipaddr_string(p + 2),
- ipaddr_string(p + 6));
- break;
- case IPCPOPT_IPCOMP:
- if (len < 4)
- goto invlen;
- TCHECK2(*(p + 2), 2);
- compproto = EXTRACT_16BITS(p+2);
-
- printf("%s (0x%02x):",
- tok2str(ipcpopt_compproto_values,"Unknown",compproto),
- compproto);
-
- switch (compproto) {
- case PPP_VJC:
- /* XXX: VJ-Comp parameters should be decoded */
- break;
- case IPCPOPT_IPCOMP_HDRCOMP:
- if (len < IPCPOPT_IPCOMP_MINLEN)
- goto invlen;
-
- TCHECK2(*(p + 2), IPCPOPT_IPCOMP_MINLEN);
- printf("\n\t TCP Space %u, non-TCP Space %u" \
- ", maxPeriod %u, maxTime %u, maxHdr %u",
- EXTRACT_16BITS(p+4),
- EXTRACT_16BITS(p+6),
- EXTRACT_16BITS(p+8),
- EXTRACT_16BITS(p+10),
- EXTRACT_16BITS(p+12));
-
- /* suboptions present ? */
- if (len > IPCPOPT_IPCOMP_MINLEN) {
- ipcomp_subopttotallen = len - IPCPOPT_IPCOMP_MINLEN;
- p += IPCPOPT_IPCOMP_MINLEN;
-
- printf("\n\t Suboptions, length %u", ipcomp_subopttotallen);
-
- while (ipcomp_subopttotallen >= 2) {
- TCHECK2(*p, 2);
- ipcomp_subopt = *p;
- ipcomp_suboptlen = *(p+1);
-
- /* sanity check */
- if (ipcomp_subopt == 0 ||
- ipcomp_suboptlen == 0 )
- break;
-
- /* XXX: just display the suboptions for now */
- printf("\n\t\t%s Suboption #%u, length %u",
- tok2str(ipcpopt_compproto_subopt_values,
- "Unknown",
- ipcomp_subopt),
- ipcomp_subopt,
- ipcomp_suboptlen);
-
- ipcomp_subopttotallen -= ipcomp_suboptlen;
- p += ipcomp_suboptlen;
- }
- }
- break;
- default:
- break;
- }
- break;
-
- case IPCPOPT_ADDR: /* those options share the same format - fall through */
- case IPCPOPT_MOBILE4:
- case IPCPOPT_PRIDNS:
- case IPCPOPT_PRINBNS:
- case IPCPOPT_SECDNS:
- case IPCPOPT_SECNBNS:
- if (len != 6)
- goto invlen;
- TCHECK2(*(p + 2), 4);
- printf("%s", ipaddr_string(p + 2));
- break;
- default:
- if(vflag<2)
- print_unknown_data(&p[2],"\n\t ",len-2);
- break;
- }
- if (vflag>1)
- print_unknown_data(&p[2],"\n\t ",len-2); /* exclude TLV header */
- return len;
-
-invlen:
- printf(", invalid-length-%d", opt);
- return 0;
-
-trunc:
- printf("[|ipcp]");
- return 0;
-}
-
-/* IP6CP config options */
-static int
-print_ip6cp_config_options(const u_char *p, int length)
-{
- int len, opt;
-
- if (length < 2)
- return 0;
- TCHECK2(*p, 2);
- len = p[1];
- opt = p[0];
- if (length < len)
- return 0;
- if (len < 2) {
- printf("\n\t %s Option (0x%02x), length %u (bogus, should be >= 2)",
- tok2str(ip6cpopt_values,"unknown",opt),
- opt,
- len);
- return 0;
- }
-
- printf("\n\t %s Option (0x%02x), length %u: ",
- tok2str(ip6cpopt_values,"unknown",opt),
- opt,
- len);
-
- switch (opt) {
- case IP6CP_IFID:
- if (len != 10)
- goto invlen;
- TCHECK2(*(p + 2), 8);
- printf("%04x:%04x:%04x:%04x",
- EXTRACT_16BITS(p + 2),
- EXTRACT_16BITS(p + 4),
- EXTRACT_16BITS(p + 6),
- EXTRACT_16BITS(p + 8));
- break;
- default:
- if(vflag<2)
- print_unknown_data(&p[2],"\n\t ",len-2);
- break;
- }
- if (vflag>1)
- print_unknown_data(&p[2],"\n\t ",len-2); /* exclude TLV header */
-
- return len;
-
-invlen:
- printf(", invalid-length-%d", opt);
- return 0;
-
-trunc:
- printf("[|ip6cp]");
- return 0;
-}
-
-
-/* CCP config options */
-static int
-print_ccp_config_options(const u_char *p, int length)
-{
- int len, opt;
-
- if (length < 2)
- return 0;
- TCHECK2(*p, 2);
- len = p[1];
- opt = p[0];
- if (length < len)
- return 0;
- if (len < 2) {
- printf("\n\t %s Option (0x%02x), length %u (bogus, should be >= 2)",
- tok2str(ccpconfopts_values, "Unknown", opt),
- opt,
- len);
- return 0;
- }
-
- printf("\n\t %s Option (0x%02x), length %u:",
- tok2str(ccpconfopts_values, "Unknown", opt),
- opt,
- len);
-
- switch (opt) {
- /* fall through --> default: nothing supported yet */
- case CCPOPT_OUI:
- case CCPOPT_PRED1:
- case CCPOPT_PRED2:
- case CCPOPT_PJUMP:
- case CCPOPT_HPPPC:
- case CCPOPT_STACLZS:
- case CCPOPT_MPPC:
- case CCPOPT_GFZA:
- case CCPOPT_V42BIS:
- case CCPOPT_BSDCOMP:
- case CCPOPT_LZSDCP:
- case CCPOPT_MVRCA:
- case CCPOPT_DEC:
- case CCPOPT_DEFLATE:
- case CCPOPT_RESV:
- default:
- if(vflag<2)
- print_unknown_data(&p[2],"\n\t ",len-2);
- break;
- }
- if (vflag>1)
- print_unknown_data(&p[2],"\n\t ",len-2); /* exclude TLV header */
-
- return len;
-
-trunc:
- printf("[|ccp]");
- return 0;
-}
-
-/* BACP config options */
-static int
-print_bacp_config_options(const u_char *p, int length)
-{
- int len, opt;
-
- if (length < 2)
- return 0;
- TCHECK2(*p, 2);
- len = p[1];
- opt = p[0];
- if (length < len)
- return 0;
- if (len < 2) {
- printf("\n\t %s Option (0x%02x), length %u (bogus, should be >= 2)",
- tok2str(bacconfopts_values, "Unknown", opt),
- opt,
- len);
- return 0;
- }
-
- printf("\n\t %s Option (0x%02x), length %u:",
- tok2str(bacconfopts_values, "Unknown", opt),
- opt,
- len);
-
- switch (opt) {
- case BACPOPT_FPEER:
- TCHECK2(*(p + 2), 4);
- printf(", Magic-Num 0x%08x", EXTRACT_32BITS(p + 2));
- break;
- default:
- if(vflag<2)
- print_unknown_data(&p[2],"\n\t ",len-2);
- break;
- }
- if (vflag>1)
- print_unknown_data(&p[2],"\n\t ",len-2); /* exclude TLV header */
-
- return len;
-
-trunc:
- printf("[|bacp]");
- return 0;
-}
-
-
-static void
-ppp_hdlc(const u_char *p, int length)
-{
- u_char *b, *s, *t, c;
- int i, proto;
- const void *se;
-
- b = (u_int8_t *)malloc(length);
- if (b == NULL)
- return;
-
- /*
- * Unescape all the data into a temporary, private, buffer.
- * Do this so that we dont overwrite the original packet
- * contents.
- */
- for (s = (u_char *)p, t = b, i = length; i > 0; i--) {
- c = *s++;
- if (c == 0x7d) {
- if (i > 1) {
- i--;
- c = *s++ ^ 0x20;
- } else
- continue;
- }
- *t++ = c;
- }
-
- se = snapend;
- snapend = t;
-
- /* now lets guess about the payload codepoint format */
- proto = *b; /* start with a one-octet codepoint guess */
-
- switch (proto) {
- case PPP_IP:
- ip_print(gndo, b+1, t - b - 1);
- goto cleanup;
-#ifdef INET6
- case PPP_IPV6:
- ip6_print(b+1, t - b - 1);
- goto cleanup;
-#endif
- default: /* no luck - try next guess */
- break;
- }
-
- proto = EXTRACT_16BITS(b); /* next guess - load two octets */
-
- switch (proto) {
- case (PPP_ADDRESS << 8 | PPP_CONTROL): /* looks like a PPP frame */
- proto = EXTRACT_16BITS(b+2); /* load the PPP proto-id */
- handle_ppp(proto, b+4, t - b - 4);
- break;
- default: /* last guess - proto must be a PPP proto-id */
- handle_ppp(proto, b+2, t - b - 2);
- break;
- }
-
-cleanup:
- snapend = se;
- free(b);
- return;
-}
-
-
-/* PPP */
-static void
-handle_ppp(u_int proto, const u_char *p, int length)
-{
- if ((proto & 0xff00) == 0x7e00) {/* is this an escape code ? */
- ppp_hdlc(p-1, length);
- return;
- }
-
- switch (proto) {
- case PPP_LCP: /* fall through */
- case PPP_IPCP:
- case PPP_OSICP:
- case PPP_MPLSCP:
- case PPP_IPV6CP:
- case PPP_CCP:
- case PPP_BACP:
- handle_ctrl_proto(proto, p, length);
- break;
- case PPP_ML:
- handle_mlppp(p, length);
- break;
- case PPP_CHAP:
- handle_chap(p, length);
- break;
- case PPP_PAP:
- handle_pap(p, length);
- break;
- case PPP_BAP: /* XXX: not yet completed */
- handle_bap(p, length);
- break;
- case ETHERTYPE_IP: /*XXX*/
- case PPP_VJNC:
- case PPP_IP:
- ip_print(gndo, p, length);
- break;
-#ifdef INET6
- case ETHERTYPE_IPV6: /*XXX*/
- case PPP_IPV6:
- ip6_print(p, length);
- break;
-#endif
- case ETHERTYPE_IPX: /*XXX*/
- case PPP_IPX:
- ipx_print(p, length);
- break;
- case PPP_OSI:
- isoclns_print(p, length, length);
- break;
- case PPP_MPLS_UCAST:
- case PPP_MPLS_MCAST:
- mpls_print(p, length);
- break;
- case PPP_COMP:
- printf("compressed PPP data");
- break;
- default:
- printf("%s ", tok2str(ppptype2str, "unknown PPP protocol (0x%04x)", proto));
- print_unknown_data(p,"\n\t",length);
- break;
- }
-}
-
-/* Standard PPP printer */
-u_int
-ppp_print(register const u_char *p, u_int length)
-{
- u_int proto,ppp_header;
- u_int olen = length; /* _o_riginal length */
- u_int hdr_len = 0;
-
- /*
- * Here, we assume that p points to the Address and Control
- * field (if they present).
- */
- if (length < 2)
- goto trunc;
- TCHECK2(*p, 2);
- ppp_header = EXTRACT_16BITS(p);
-
- switch(ppp_header) {
- case (PPP_WITHDIRECTION_IN << 8 | PPP_CONTROL):
- if (eflag) printf("In ");
- p += 2;
- length -= 2;
- hdr_len += 2;
- break;
- case (PPP_WITHDIRECTION_OUT << 8 | PPP_CONTROL):
- if (eflag) printf("Out ");
- p += 2;
- length -= 2;
- hdr_len += 2;
- break;
- case (PPP_ADDRESS << 8 | PPP_CONTROL):
- p += 2; /* ACFC not used */
- length -= 2;
- hdr_len += 2;
- break;
-
- default:
- break;
- }
-
- if (length < 2)
- goto trunc;
- TCHECK(*p);
- if (*p % 2) {
- proto = *p; /* PFC is used */
- p++;
- length--;
- hdr_len++;
- } else {
- TCHECK2(*p, 2);
- proto = EXTRACT_16BITS(p);
- p += 2;
- length -= 2;
- hdr_len += 2;
- }
-
- if (eflag)
- printf("%s (0x%04x), length %u: ",
- tok2str(ppptype2str, "unknown", proto),
- proto,
- olen);
-
- handle_ppp(proto, p, length);
- return (hdr_len);
-trunc:
- printf("[|ppp]");
- return (0);
-}
-
-
-/* PPP I/F printer */
-u_int
-ppp_if_print(const struct pcap_pkthdr *h, register const u_char *p)
-{
- register u_int length = h->len;
- register u_int caplen = h->caplen;
-
- if (caplen < PPP_HDRLEN) {
- printf("[|ppp]");
- return (caplen);
- }
-
-#if 0
- /*
- * XXX: seems to assume that there are 2 octets prepended to an
- * actual PPP frame. The 1st octet looks like Input/Output flag
- * while 2nd octet is unknown, at least to me
- * (mshindo@mshindo.net).
- *
- * That was what the original tcpdump code did.
- *
- * FreeBSD's "if_ppp.c" *does* set the first octet to 1 for outbound
- * packets and 0 for inbound packets - but only if the
- * protocol field has the 0x8000 bit set (i.e., it's a network
- * control protocol); it does so before running the packet through
- * "bpf_filter" to see if it should be discarded, and to see
- * if we should update the time we sent the most recent packet...
- *
- * ...but it puts the original address field back after doing
- * so.
- *
- * NetBSD's "if_ppp.c" doesn't set the first octet in that fashion.
- *
- * I don't know if any PPP implementation handed up to a BPF
- * device packets with the first octet being 1 for outbound and
- * 0 for inbound packets, so I (guy@alum.mit.edu) don't know
- * whether that ever needs to be checked or not.
- *
- * Note that NetBSD has a DLT_PPP_SERIAL, which it uses for PPP,
- * and its tcpdump appears to assume that the frame always
- * begins with an address field and a control field, and that
- * the address field might be 0x0f or 0x8f, for Cisco
- * point-to-point with HDLC framing as per section 4.3.1 of RFC
- * 1547, as well as 0xff, for PPP in HDLC-like framing as per
- * RFC 1662.
- *
- * (Is the Cisco framing in question what DLT_C_HDLC, in
- * BSD/OS, is?)
- */
- if (eflag)
- printf("%c %4d %02x ", p[0] ? 'O' : 'I', length, p[1]);
-#endif
-
- ppp_print(p, length);
-
- return (0);
-}
-
-/*
- * PPP I/F printer to use if we know that RFC 1662-style PPP in HDLC-like
- * framing, or Cisco PPP with HDLC framing as per section 4.3.1 of RFC 1547,
- * is being used (i.e., we don't check for PPP_ADDRESS and PPP_CONTROL,
- * discard them *if* those are the first two octets, and parse the remaining
- * packet as a PPP packet, as "ppp_print()" does).
- *
- * This handles, for example, DLT_PPP_SERIAL in NetBSD.
- */
-u_int
-ppp_hdlc_if_print(const struct pcap_pkthdr *h, register const u_char *p)
-{
- register u_int length = h->len;
- register u_int caplen = h->caplen;
- u_int proto;
- u_int hdrlen = 0;
-
- if (caplen < 2) {
- printf("[|ppp]");
- return (caplen);
- }
-
- switch (p[0]) {
-
- case PPP_ADDRESS:
- if (caplen < 4) {
- printf("[|ppp]");
- return (caplen);
- }
-
- if (eflag)
- printf("%02x %02x %d ", p[0], p[1], length);
- p += 2;
- length -= 2;
- hdrlen += 2;
-
- proto = EXTRACT_16BITS(p);
- p += 2;
- length -= 2;
- hdrlen += 2;
- printf("%s: ", tok2str(ppptype2str, "unknown PPP protocol (0x%04x)", proto));
-
- handle_ppp(proto, p, length);
- break;
-
- case CHDLC_UNICAST:
- case CHDLC_BCAST:
- return (chdlc_if_print(h, p));
-
- default:
- if (eflag)
- printf("%02x %02x %d ", p[0], p[1], length);
- p += 2;
- length -= 2;
- hdrlen += 2;
-
- /*
- * XXX - NetBSD's "ppp_netbsd_serial_if_print()" treats
- * the next two octets as an Ethernet type; does that
- * ever happen?
- */
- printf("unknown addr %02x; ctrl %02x", p[0], p[1]);
- break;
- }
-
- return (hdrlen);
-}
-
-#define PPP_BSDI_HDRLEN 24
-
-/* BSD/OS specific PPP printer */
-u_int
-ppp_bsdos_if_print(const struct pcap_pkthdr *h _U_, register const u_char *p _U_)
-{
- register int hdrlength;
-#ifdef __bsdi__
- register u_int length = h->len;
- register u_int caplen = h->caplen;
- u_int16_t ptype;
- const u_char *q;
- int i;
-
- if (caplen < PPP_BSDI_HDRLEN) {
- printf("[|ppp]");
- return (caplen)
- }
-
- hdrlength = 0;
-
-#if 0
- if (p[0] == PPP_ADDRESS && p[1] == PPP_CONTROL) {
- if (eflag)
- printf("%02x %02x ", p[0], p[1]);
- p += 2;
- hdrlength = 2;
- }
-
- if (eflag)
- printf("%d ", length);
- /* Retrieve the protocol type */
- if (*p & 01) {
- /* Compressed protocol field */
- ptype = *p;
- if (eflag)
- printf("%02x ", ptype);
- p++;
- hdrlength += 1;
- } else {
- /* Un-compressed protocol field */
- ptype = ntohs(*(u_int16_t *)p);
- if (eflag)
- printf("%04x ", ptype);
- p += 2;
- hdrlength += 2;
- }
-#else
- ptype = 0; /*XXX*/
- if (eflag)
- printf("%c ", p[SLC_DIR] ? 'O' : 'I');
- if (p[SLC_LLHL]) {
- /* link level header */
- struct ppp_header *ph;
-
- q = p + SLC_BPFHDRLEN;
- ph = (struct ppp_header *)q;
- if (ph->phdr_addr == PPP_ADDRESS
- && ph->phdr_ctl == PPP_CONTROL) {
- if (eflag)
- printf("%02x %02x ", q[0], q[1]);
- ptype = ntohs(ph->phdr_type);
- if (eflag && (ptype == PPP_VJC || ptype == PPP_VJNC)) {
- printf("%s ", tok2str(ppptype2str,
- "proto-#%d", ptype));
- }
- } else {
- if (eflag) {
- printf("LLH=[");
- for (i = 0; i < p[SLC_LLHL]; i++)
- printf("%02x", q[i]);
- printf("] ");
- }
- }
- }
- if (eflag)
- printf("%d ", length);
- if (p[SLC_CHL]) {
- q = p + SLC_BPFHDRLEN + p[SLC_LLHL];
-
- switch (ptype) {
- case PPP_VJC:
- ptype = vjc_print(q, ptype);
- hdrlength = PPP_BSDI_HDRLEN;
- p += hdrlength;
- switch (ptype) {
- case PPP_IP:
- ip_print(p, length);
- break;
-#ifdef INET6
- case PPP_IPV6:
- ip6_print(p, length);
- break;
-#endif
- case PPP_MPLS_UCAST:
- case PPP_MPLS_MCAST:
- mpls_print(p, length);
- break;
- }
- goto printx;
- case PPP_VJNC:
- ptype = vjc_print(q, ptype);
- hdrlength = PPP_BSDI_HDRLEN;
- p += hdrlength;
- switch (ptype) {
- case PPP_IP:
- ip_print(p, length);
- break;
-#ifdef INET6
- case PPP_IPV6:
- ip6_print(p, length);
- break;
-#endif
- case PPP_MPLS_UCAST:
- case PPP_MPLS_MCAST:
- mpls_print(p, length);
- break;
- }
- goto printx;
- default:
- if (eflag) {
- printf("CH=[");
- for (i = 0; i < p[SLC_LLHL]; i++)
- printf("%02x", q[i]);
- printf("] ");
- }
- break;
- }
- }
-
- hdrlength = PPP_BSDI_HDRLEN;
-#endif
-
- length -= hdrlength;
- p += hdrlength;
-
- switch (ptype) {
- case PPP_IP:
- ip_print(p, length);
- break;
-#ifdef INET6
- case PPP_IPV6:
- ip6_print(p, length);
- break;
-#endif
- case PPP_MPLS_UCAST:
- case PPP_MPLS_MCAST:
- mpls_print(p, length);
- break;
- default:
- printf("%s ", tok2str(ppptype2str, "unknown PPP protocol (0x%04x)", ptype));
- }
-
-printx:
-#else /* __bsdi */
- hdrlength = 0;
-#endif /* __bsdi__ */
- return (hdrlength);
-}
-
-
-/*
- * Local Variables:
- * c-style: whitesmith
- * c-basic-offset: 8
- * End:
- */
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