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/* $OpenBSD: print-ppp.c,v 1.30 2017/07/25 16:07:28 espie Exp $ */ |
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/* |
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* Copyright (c) 1990, 1991, 1993, 1994, 1995, 1996, 1997 |
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* The Regents of the University of California. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that: (1) source code distributions |
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* retain the above copyright notice and this paragraph in its entirety, (2) |
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* distributions including binary code include the above copyright notice and |
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* this paragraph in its entirety in the documentation or other materials |
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* provided with the distribution, and (3) all advertising materials mentioning |
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* features or use of this software display the following acknowledgement: |
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* ``This product includes software developed by the University of California, |
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* Lawrence Berkeley Laboratory and its contributors.'' Neither the name of |
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* the University nor the names of its contributors may be used to endorse |
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* or promote products derived from this software without specific prior |
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* written permission. |
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED |
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* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF |
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. |
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*/ |
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#ifdef PPP |
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#include <sys/time.h> |
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#include <sys/socket.h> |
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#include <sys/file.h> |
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#include <sys/ioctl.h> |
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struct mbuf; |
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struct rtentry; |
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#include <net/if.h> |
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#include <netinet/in.h> |
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#include <netinet/ip.h> |
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#include <ctype.h> |
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#include <netdb.h> |
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#include <pcap.h> |
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#include <signal.h> |
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#include <stdio.h> |
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#include <netinet/if_ether.h> |
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#include "ethertype.h" |
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#include <net/ppp_defs.h> |
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#include "interface.h" |
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#include "addrtoname.h" |
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#include "extract.h" |
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struct protonames { |
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u_short protocol; |
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char *name; |
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}; |
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static struct protonames protonames[] = { |
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/* |
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* Protocol field values. |
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*/ |
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{ PPP_IP, "IP" }, /* Internet Protocol */ |
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{ PPP_XNS, "XNS" }, /* Xerox NS */ |
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{ PPP_IPX, "IPX" }, /* IPX Datagram (RFC1552) */ |
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{ PPP_VJC_COMP, "VJC_UNCOMP" }, /* VJ compressed TCP */ |
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{ PPP_VJC_UNCOMP,"VJC_UNCOMP" },/* VJ uncompressed TCP */ |
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{ PPP_COMP, "COMP" }, /* compressed packet */ |
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{ PPP_IPCP, "IPCP" }, /* IP Control Protocol */ |
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{ PPP_IPXCP, "IPXCP" }, /* IPX Control Protocol (RFC1552) */ |
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{ PPP_IPV6CP, "IPV6CP" }, /* IPv6 Control Protocol */ |
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{ PPP_CCP, "CCP" }, /* Compression Control Protocol */ |
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{ PPP_LCP, "LCP" }, /* Link Control Protocol */ |
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{ PPP_PAP, "PAP" }, /* Password Authentication Protocol */ |
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{ PPP_LQR, "LQR" }, /* Link Quality Report protocol */ |
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{ PPP_CHAP, "CHAP" }, /* Cryptographic Handshake Auth. Proto */ |
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{ PPP_IPV6, "IPV6" }, /* Internet Protocol v6 */ |
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}; |
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/* LCP */ |
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#define LCP_CONF_REQ 1 |
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#define LCP_CONF_ACK 2 |
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#define LCP_CONF_NAK 3 |
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#define LCP_CONF_REJ 4 |
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#define LCP_TERM_REQ 5 |
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#define LCP_TERM_ACK 6 |
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#define LCP_CODE_REJ 7 |
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#define LCP_PROT_REJ 8 |
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#define LCP_ECHO_REQ 9 |
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#define LCP_ECHO_RPL 10 |
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#define LCP_DISC_REQ 11 |
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#define LCP_MIN LCP_CONF_REQ |
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#define LCP_MAX LCP_DISC_REQ |
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static char *lcpcodes[] = { |
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/* |
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* LCP code values (RFC1661, pp26) |
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*/ |
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"Configure-Request", |
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"Configure-Ack", |
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"Configure-Nak", |
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"Configure-Reject", |
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"Terminate-Request", |
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"Terminate-Ack", |
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"Code-Reject", |
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"Protocol-Reject", |
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"Echo-Request", |
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"Echo-Reply", |
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"Discard-Request", |
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}; |
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#define LCPOPT_VEXT 0 |
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#define LCPOPT_MRU 1 |
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#define LCPOPT_ACCM 2 |
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#define LCPOPT_AP 3 |
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#define LCPOPT_QP 4 |
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#define LCPOPT_MN 5 |
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#define LCPOPT_PFC 7 |
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#define LCPOPT_ACFC 8 |
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#define LCPOPT_MIN 0 |
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#define LCPOPT_MAX 24 |
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static char *lcpconfopts[] = { |
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"Vendor-Ext", |
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"Max-Rx-Unit", |
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"Async-Ctrl-Char-Map", |
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"Auth-Prot", |
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"Quality-Prot", |
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"Magic-Number", |
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"unassigned (6)", |
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"Prot-Field-Compr", |
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"Add-Ctrl-Field-Compr", |
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"FCS-Alternatives", |
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"Self-Describing-Pad", |
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"Numbered-Mode", |
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"Multi-Link-Procedure", |
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"Call-Back", |
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"Connect-Time" |
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"Compund-Frames", |
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"Nominal-Data-Encap", |
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"Multilink-MRRU", |
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"Multilink-SSNHF", |
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"Multilink-ED", |
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"Proprietary", |
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"DCE-Identifier", |
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"Multilink-Plus-Proc", |
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"Link-Discriminator", |
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"LCP-Auth-Option", |
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}; |
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/* CHAP */ |
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#define CHAP_CHAL 1 |
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#define CHAP_RESP 2 |
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#define CHAP_SUCC 3 |
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#define CHAP_FAIL 4 |
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#define CHAP_CODEMIN 1 |
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#define CHAP_CODEMAX 4 |
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static char *chapcode[] = { |
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"Challenge", |
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"Response", |
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"Success", |
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"Failure", |
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}; |
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/* PAP */ |
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#define PAP_AREQ 1 |
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#define PAP_AACK 2 |
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#define PAP_ANAK 3 |
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#define PAP_CODEMIN 1 |
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#define PAP_CODEMAX 3 |
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static char *papcode[] = { |
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"Authenticate-Request", |
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"Authenticate-Ack", |
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"Authenticate-Nak", |
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}; |
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/* IPCP */ |
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#define IPCP_CODE_CFG_REQ 1 |
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#define IPCP_CODE_CFG_ACK 2 |
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#define IPCP_CODE_CFG_NAK 3 |
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#define IPCP_CODE_CFG_REJ 4 |
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#define IPCP_CODE_TRM_REQ 5 |
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#define IPCP_CODE_TRM_ACK 6 |
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#define IPCP_CODE_COD_REJ 7 |
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#define IPCP_CODE_MIN IPCP_CODE_CFG_REQ |
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#define IPCP_CODE_MAX IPCP_CODE_COD_REJ |
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#define IPCP_2ADDR 1 |
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#define IPCP_CP 2 |
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#define IPCP_ADDR 3 |
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/* IPV6CP */ |
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#define IPV6CP_CODE_CFG_REQ 1 |
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#define IPV6CP_CODE_CFG_ACK 2 |
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#define IPV6CP_CODE_CFG_NAK 3 |
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#define IPV6CP_CODE_CFG_REJ 4 |
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#define IPV6CP_CODE_TRM_REQ 5 |
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#define IPV6CP_CODE_TRM_ACK 6 |
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#define IPV6CP_CODE_COD_REJ 7 |
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#define IPV6CP_CODE_MIN IPV6CP_CODE_CFG_REQ |
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#define IPV6CP_CODE_MAX IPV6CP_CODE_COD_REJ |
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#define IPV6CP_IFID 1 |
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static int print_lcp_config_options(u_char *p); |
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static void handle_lcp(const u_char *p, int length); |
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static void handle_chap(const u_char *p, int length); |
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static void handle_ipcp(const u_char *p, int length); |
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static void handle_ipv6cp(const u_char *p, int length); |
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static void handle_pap(const u_char *p, int length); |
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struct pppoe_header { |
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u_int8_t vertype; /* PPPoE version/type */ |
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u_int8_t code; /* PPPoE code (packet type) */ |
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u_int16_t sessionid; /* PPPoE session id */ |
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u_int16_t len; /* PPPoE payload length */ |
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}; |
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#define PPPOE_CODE_SESSION 0x00 /* Session */ |
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#define PPPOE_CODE_PADO 0x07 /* Active Discovery Offer */ |
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#define PPPOE_CODE_PADI 0x09 /* Active Discovery Initiation */ |
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#define PPPOE_CODE_PADR 0x19 /* Active Discovery Request */ |
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#define PPPOE_CODE_PADS 0x65 /* Active Discovery Session-Confirm */ |
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#define PPPOE_CODE_PADT 0xa7 /* Active Discovery Terminate */ |
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#define PPPOE_TAG_END_OF_LIST 0x0000 /* End Of List */ |
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#define PPPOE_TAG_SERVICE_NAME 0x0101 /* Service Name */ |
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#define PPPOE_TAG_AC_NAME 0x0102 /* Access Concentrator Name */ |
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#define PPPOE_TAG_HOST_UNIQ 0x0103 /* Host Uniq */ |
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#define PPPOE_TAG_AC_COOKIE 0x0104 /* Access Concentratr Cookie */ |
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#define PPPOE_TAG_VENDOR_SPEC 0x0105 /* Vendor Specific */ |
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#define PPPOE_TAG_RELAY_SESSION 0x0110 /* Relay Session Id */ |
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#define PPPOE_TAG_MAX_PAYLOAD 0x0120 /* RFC 4638 Max Payload */ |
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#define PPPOE_TAG_SERVICE_NAME_ERROR 0x0201 /* Service Name Error */ |
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#define PPPOE_TAG_AC_SYSTEM_ERROR 0x0202 /* Acc. Concentrator Error */ |
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#define PPPOE_TAG_GENERIC_ERROR 0x0203 /* Generic Error */ |
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void |
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ppp_hdlc_print(p, length) |
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const u_char *p; |
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int length; |
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{ |
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int proto = PPP_PROTOCOL(p); |
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int i; |
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for (i = sizeof(protonames) / sizeof(protonames[0]) - 1; i >= 0; i--) { |
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if (proto == protonames[i].protocol) { |
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printf("%s: ", protonames[i].name); |
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switch(proto) { |
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case PPP_LCP: |
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handle_lcp(p, length); |
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break; |
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case PPP_CHAP: |
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handle_chap(p, length); |
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break; |
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case PPP_PAP: |
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handle_pap(p, length); |
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break; |
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case PPP_IPCP: |
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handle_ipcp(p, length); |
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break; |
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case PPP_IPV6CP: |
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handle_ipv6cp(p, length); |
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break; |
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} |
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break; |
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} |
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} |
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if (i < 0) |
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printf("%04x: ", proto); |
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} |
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/* print LCP frame */ |
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static void |
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handle_lcp(p, length) |
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const u_char *p; |
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int length; |
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{ |
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int x, j; |
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u_char *ptr; |
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TCHECK(*(p + 4)); |
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x = *(p + 4); |
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if ((x >= LCP_MIN) && (x <= LCP_MAX)) |
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printf("%s", lcpcodes[x-1]); |
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else { |
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printf("0x%02x", x); |
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return; |
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} |
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length -= 4; |
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switch(x) { |
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case LCP_CONF_REQ: |
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case LCP_CONF_ACK: |
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case LCP_CONF_NAK: |
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case LCP_CONF_REJ: |
311 |
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x = length; |
312 |
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ptr = (u_char *)p+8; |
313 |
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do { |
314 |
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if((j = print_lcp_config_options(ptr)) == 0) |
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break; |
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x -= j; |
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ptr += j; |
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} |
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while(x > 0); |
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break; |
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case LCP_ECHO_REQ: |
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case LCP_ECHO_RPL: |
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TCHECK2(*(p + 8), 4); |
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printf(", Magic-Number=%d", ((*(p+ 8) << 24) + (*(p+9) << 16) + |
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(*(p+10) << 8) + (*(p+11)))); |
327 |
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break; |
328 |
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case LCP_TERM_REQ: |
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case LCP_TERM_ACK: |
330 |
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case LCP_CODE_REJ: |
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case LCP_PROT_REJ: |
332 |
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case LCP_DISC_REQ: |
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default: |
334 |
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break; |
335 |
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} |
336 |
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return; |
337 |
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338 |
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trunc: |
339 |
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printf("[|lcp]"); |
340 |
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} |
341 |
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342 |
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/* LCP config options */ |
343 |
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344 |
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static int |
345 |
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print_lcp_config_options(p) |
346 |
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u_char *p; |
347 |
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{ |
348 |
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int len, opt; |
349 |
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350 |
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TCHECK2(*p, 2); |
351 |
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len = *(p+1); |
352 |
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opt = *p; |
353 |
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354 |
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if((opt >= LCPOPT_MIN) && (opt <= LCPOPT_MAX)) |
355 |
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printf(", %s", lcpconfopts[opt]); |
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357 |
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switch(opt) { |
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case LCPOPT_MRU: |
359 |
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if(len == 4) { |
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TCHECK2(*(p + 2), 2); |
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printf("=%d", (*(p+2) << 8) + *(p+3)); |
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} |
363 |
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break; |
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case LCPOPT_AP: |
365 |
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if(len >= 4) { |
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TCHECK2(*(p + 2), 2); |
367 |
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if(*(p+2) == 0xc0 && *(p+3) == 0x23) |
368 |
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printf(" PAP"); |
369 |
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else if(*(p+2) == 0xc2 && *(p+3) == 0x23) { |
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printf(" CHAP/"); |
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TCHECK(*(p+4)); |
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switch(*(p+4)) { |
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default: |
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printf("unknown-algorithm-%d", *(p+4)); |
375 |
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break; |
376 |
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case 5: |
377 |
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printf("MD5"); |
378 |
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break; |
379 |
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case 0x80: |
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printf("Microsoft"); |
381 |
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break; |
382 |
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} |
383 |
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} else if(*(p+2) == 0xc2 && *(p+3) == 0x27) |
384 |
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printf(" EAP"); |
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else if(*(p+2) == 0xc0 && *(p+3) == 0x27) |
386 |
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printf(" SPAP"); |
387 |
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else if(*(p+2) == 0xc1 && *(p+3) == 0x23) |
388 |
|
|
printf(" Old-SPAP"); |
389 |
|
|
else |
390 |
|
|
printf("unknown"); |
391 |
|
|
} |
392 |
|
|
break; |
393 |
|
|
case LCPOPT_QP: |
394 |
|
|
if(len >= 4) { |
395 |
|
|
TCHECK2(*(p + 2), 2); |
396 |
|
|
if(*(p+2) == 0xc0 && *(p+3) == 0x25) |
397 |
|
|
printf(" LQR"); |
398 |
|
|
else |
399 |
|
|
printf(" unknown"); |
400 |
|
|
} |
401 |
|
|
break; |
402 |
|
|
case LCPOPT_MN: |
403 |
|
|
if(len == 6) { |
404 |
|
|
TCHECK2(*(p + 2), 4); |
405 |
|
|
printf("=%d", ((*(p+2) << 24) + (*(p+3) << 16) + |
406 |
|
|
(*(p+4) << 8) + (*(p+5)))); |
407 |
|
|
} |
408 |
|
|
break; |
409 |
|
|
case LCPOPT_PFC: |
410 |
|
|
printf(" PFC"); |
411 |
|
|
break; |
412 |
|
|
case LCPOPT_ACFC: |
413 |
|
|
printf(" ACFC"); |
414 |
|
|
break; |
415 |
|
|
} |
416 |
|
|
return(len); |
417 |
|
|
|
418 |
|
|
trunc: |
419 |
|
|
printf("[|lcp]"); |
420 |
|
|
return 0; |
421 |
|
|
} |
422 |
|
|
|
423 |
|
|
/* CHAP */ |
424 |
|
|
|
425 |
|
|
static void |
426 |
|
|
handle_chap(p, length) |
427 |
|
|
const u_char *p; |
428 |
|
|
int length; |
429 |
|
|
{ |
430 |
|
|
int x; |
431 |
|
|
u_char *ptr; |
432 |
|
|
|
433 |
|
|
TCHECK(*(p+4)); |
434 |
|
|
x = *(p+4); |
435 |
|
|
|
436 |
|
|
if((x >= CHAP_CODEMIN) && (x <= CHAP_CODEMAX)) |
437 |
|
|
printf("%s", chapcode[x-1]); |
438 |
|
|
else { |
439 |
|
|
printf("0x%02x", x); |
440 |
|
|
return; |
441 |
|
|
} |
442 |
|
|
|
443 |
|
|
length -= 4; |
444 |
|
|
|
445 |
|
|
switch(x) { |
446 |
|
|
case CHAP_CHAL: |
447 |
|
|
case CHAP_RESP: |
448 |
|
|
printf(", Value="); |
449 |
|
|
TCHECK(*(p+8)); |
450 |
|
|
x = *(p+8); /* value size */ |
451 |
|
|
ptr = (u_char *)p+9; |
452 |
|
|
while(--x >= 0) { |
453 |
|
|
TCHECK(*ptr); |
454 |
|
|
printf("%02x", *ptr++); |
455 |
|
|
} |
456 |
|
|
x = length - *(p+8) - 1; |
457 |
|
|
printf(", Name="); |
458 |
|
|
while(--x >= 0) { |
459 |
|
|
TCHECK(*ptr); |
460 |
|
|
safeputchar(*ptr++); |
461 |
|
|
} |
462 |
|
|
break; |
463 |
|
|
} |
464 |
|
|
return; |
465 |
|
|
|
466 |
|
|
trunc: |
467 |
|
|
printf("[|chap]"); |
468 |
|
|
} |
469 |
|
|
|
470 |
|
|
/* PAP */ |
471 |
|
|
|
472 |
|
|
static void |
473 |
|
|
handle_pap(p, length) |
474 |
|
|
const u_char *p; |
475 |
|
|
int length; |
476 |
|
|
{ |
477 |
|
|
int x; |
478 |
|
|
u_char *ptr; |
479 |
|
|
|
480 |
|
|
TCHECK(*(p+4)); |
481 |
|
|
x = *(p+4); |
482 |
|
|
|
483 |
|
|
if((x >= PAP_CODEMIN) && (x <= PAP_CODEMAX)) |
484 |
|
|
printf("%s", papcode[x-1]); |
485 |
|
|
else { |
486 |
|
|
printf("0x%02x", x); |
487 |
|
|
return; |
488 |
|
|
} |
489 |
|
|
|
490 |
|
|
length -= 4; |
491 |
|
|
|
492 |
|
|
switch(x) { |
493 |
|
|
case PAP_AREQ: |
494 |
|
|
printf(", Peer-Id="); |
495 |
|
|
TCHECK(*(p+8)); |
496 |
|
|
x = *(p+8); /* peerid size */ |
497 |
|
|
ptr = (u_char *)p+9; |
498 |
|
|
while(--x >= 0) { |
499 |
|
|
TCHECK(*ptr); |
500 |
|
|
safeputchar(*ptr++); |
501 |
|
|
} |
502 |
|
|
TCHECK(*ptr); |
503 |
|
|
x = *ptr++; |
504 |
|
|
printf(", Passwd="); |
505 |
|
|
while(--x >= 0) { |
506 |
|
|
TCHECK(*ptr); |
507 |
|
|
safeputchar(*ptr++); |
508 |
|
|
} |
509 |
|
|
break; |
510 |
|
|
case PAP_AACK: |
511 |
|
|
case PAP_ANAK: |
512 |
|
|
break; |
513 |
|
|
} |
514 |
|
|
return; |
515 |
|
|
|
516 |
|
|
trunc: |
517 |
|
|
printf("[|pap]"); |
518 |
|
|
} |
519 |
|
|
|
520 |
|
|
/* IPCP */ |
521 |
|
|
|
522 |
|
|
static void |
523 |
|
|
handle_ipcp(p, length) |
524 |
|
|
const u_char *p; |
525 |
|
|
int length; |
526 |
|
|
{ |
527 |
|
|
int x; |
528 |
|
|
|
529 |
|
|
TCHECK(*(p+4)); |
530 |
|
|
x = *(p+4); |
531 |
|
|
|
532 |
|
|
if((x >= IPCP_CODE_MIN) && (x <= IPCP_CODE_MAX)) |
533 |
|
|
printf("%s", lcpcodes[x-1]); /* share table with LCP */ |
534 |
|
|
else { |
535 |
|
|
printf("0x%02x", x); |
536 |
|
|
return; |
537 |
|
|
} |
538 |
|
|
|
539 |
|
|
length -= 4; |
540 |
|
|
|
541 |
|
|
TCHECK(*(p+8)); |
542 |
|
|
switch(*(p+8)) { |
543 |
|
|
case IPCP_2ADDR: |
544 |
|
|
printf(", IP-Addresses"); |
545 |
|
|
TCHECK2(*(p+10), 8); |
546 |
|
|
printf(", Src=%d.%d.%d.%d", |
547 |
|
|
*(p+10), *(p+11), *(p+12), *(p+13)); |
548 |
|
|
printf(", Dst=%d.%d.%d.%d", |
549 |
|
|
*(p+14), *(p+15), *(p+16), *(p+17)); |
550 |
|
|
break; |
551 |
|
|
|
552 |
|
|
case IPCP_CP: |
553 |
|
|
printf(", IP-Compression-Protocol"); |
554 |
|
|
break; |
555 |
|
|
|
556 |
|
|
case IPCP_ADDR: |
557 |
|
|
TCHECK2(*(p+10), 4); |
558 |
|
|
printf(", IP-Address=%d.%d.%d.%d", |
559 |
|
|
*(p+10), *(p+11), *(p+12), *(p+13)); |
560 |
|
|
break; |
561 |
|
|
default: |
562 |
|
|
printf(", Unknown IPCP code 0x%x", *(p+8)); |
563 |
|
|
break; |
564 |
|
|
} |
565 |
|
|
return; |
566 |
|
|
|
567 |
|
|
trunc: |
568 |
|
|
printf("[|ipcp]"); |
569 |
|
|
} |
570 |
|
|
|
571 |
|
|
/* IPV6CP */ |
572 |
|
|
|
573 |
|
|
static void |
574 |
|
|
handle_ipv6cp(p, length) |
575 |
|
|
const u_char *p; |
576 |
|
|
int length; |
577 |
|
|
{ |
578 |
|
|
int x; |
579 |
|
|
|
580 |
|
|
TCHECK(*(p+4)); |
581 |
|
|
x = *(p+4); |
582 |
|
|
|
583 |
|
|
if((x >= IPV6CP_CODE_MIN) && (x <= IPV6CP_CODE_MAX)) |
584 |
|
|
printf("%s", lcpcodes[x-1]); /* share table with LCP */ |
585 |
|
|
else { |
586 |
|
|
printf("0x%02x", x); |
587 |
|
|
return; |
588 |
|
|
} |
589 |
|
|
|
590 |
|
|
TCHECK(*(p+8)); |
591 |
|
|
switch(*(p+8)) { |
592 |
|
|
case IPV6CP_IFID: |
593 |
|
|
TCHECK2(*(p + 10), 8); |
594 |
|
|
printf(", Interface-ID=%04x:%04x:%04x:%04x", |
595 |
|
|
EXTRACT_16BITS(p + 10), |
596 |
|
|
EXTRACT_16BITS(p + 12), |
597 |
|
|
EXTRACT_16BITS(p + 14), |
598 |
|
|
EXTRACT_16BITS(p + 16)); |
599 |
|
|
break; |
600 |
|
|
|
601 |
|
|
default: |
602 |
|
|
printf(", Unknown IPV6CP code 0x%x", *(p+8)); |
603 |
|
|
break; |
604 |
|
|
} |
605 |
|
|
return; |
606 |
|
|
|
607 |
|
|
trunc: |
608 |
|
|
printf("[|ipv6cp]"); |
609 |
|
|
} |
610 |
|
|
|
611 |
|
|
void |
612 |
|
|
ppp_if_print(user, h, p) |
613 |
|
|
u_char *user; |
614 |
|
|
const struct pcap_pkthdr *h; |
615 |
|
|
const u_char *p; |
616 |
|
|
{ |
617 |
|
|
u_int length = h->len; |
618 |
|
|
u_int caplen = h->caplen; |
619 |
|
|
|
620 |
|
|
ts_print(&h->ts); |
621 |
|
|
|
622 |
|
|
if (caplen < PPP_HDRLEN) { |
623 |
|
|
printf("[|ppp]"); |
624 |
|
|
goto out; |
625 |
|
|
} |
626 |
|
|
|
627 |
|
|
/* |
628 |
|
|
* Some printers want to get back at the link level addresses, |
629 |
|
|
* and/or check that they're not walking off the end of the packet. |
630 |
|
|
* Rather than pass them all the way down, we set these globals. |
631 |
|
|
*/ |
632 |
|
|
packetp = p; |
633 |
|
|
snapend = p + caplen; |
634 |
|
|
|
635 |
|
|
if (eflag) |
636 |
|
|
ppp_hdlc_print(p, length); |
637 |
|
|
|
638 |
|
|
length -= PPP_HDRLEN; |
639 |
|
|
|
640 |
|
|
switch(PPP_PROTOCOL(p)) { |
641 |
|
|
case PPP_IP: |
642 |
|
|
case ETHERTYPE_IP: |
643 |
|
|
ip_print((const u_char *)(p + PPP_HDRLEN), length); |
644 |
|
|
break; |
645 |
|
|
case PPP_IPV6: |
646 |
|
|
case ETHERTYPE_IPV6: |
647 |
|
|
ip6_print((const u_char *)(p + PPP_HDRLEN), length); |
648 |
|
|
break; |
649 |
|
|
case PPP_IPX: |
650 |
|
|
case ETHERTYPE_IPX: |
651 |
|
|
ipx_print((const u_char *)(p + PPP_HDRLEN), length); |
652 |
|
|
break; |
653 |
|
|
|
654 |
|
|
#ifndef PPP_MPLS |
655 |
|
|
#define PPP_MPLS 0x0281 |
656 |
|
|
#endif |
657 |
|
|
case PPP_MPLS: |
658 |
|
|
mpls_print((const u_char *)(p + PPP_HDRLEN), length); |
659 |
|
|
break; |
660 |
|
|
|
661 |
|
|
default: |
662 |
|
|
if(!eflag) |
663 |
|
|
ppp_hdlc_print(p, length); |
664 |
|
|
if(!xflag) |
665 |
|
|
default_print((const u_char *)(p + PPP_HDRLEN), |
666 |
|
|
caplen - PPP_HDRLEN); |
667 |
|
|
} |
668 |
|
|
|
669 |
|
|
if (xflag) |
670 |
|
|
default_print((const u_char *)(p + PPP_HDRLEN), |
671 |
|
|
caplen - PPP_HDRLEN); |
672 |
|
|
out: |
673 |
|
|
putchar('\n'); |
674 |
|
|
} |
675 |
|
|
|
676 |
|
|
void |
677 |
|
|
ppp_ether_if_print(user, h, p) |
678 |
|
|
u_char *user; |
679 |
|
|
const struct pcap_pkthdr *h; |
680 |
|
|
const u_char *p; |
681 |
|
|
{ |
682 |
|
|
u_int16_t pppoe_sid, pppoe_len; |
683 |
|
|
u_int caplen = h->caplen; |
684 |
|
|
u_int16_t length = h->len; |
685 |
|
|
u_int16_t proto; |
686 |
|
|
int i; |
687 |
|
|
|
688 |
|
|
ts_print(&h->ts); |
689 |
|
|
|
690 |
|
|
packetp = p; |
691 |
|
|
snapend = p + caplen; |
692 |
|
|
|
693 |
|
|
if (eflag) |
694 |
|
|
printf("PPPoE "); |
695 |
|
|
|
696 |
|
|
if (caplen < sizeof(struct pppoe_header)) { |
697 |
|
|
printf("[|pppoe]"); |
698 |
|
|
return; |
699 |
|
|
} |
700 |
|
|
|
701 |
|
|
if(eflag) |
702 |
|
|
{ |
703 |
|
|
printf("\n\tcode "); |
704 |
|
|
switch (p[1]) { |
705 |
|
|
case PPPOE_CODE_PADI: |
706 |
|
|
printf("Initiation"); |
707 |
|
|
break; |
708 |
|
|
case PPPOE_CODE_PADO: |
709 |
|
|
printf("Offer"); |
710 |
|
|
break; |
711 |
|
|
case PPPOE_CODE_PADR: |
712 |
|
|
printf("Request"); |
713 |
|
|
break; |
714 |
|
|
case PPPOE_CODE_PADS: |
715 |
|
|
printf("Confirm"); |
716 |
|
|
break; |
717 |
|
|
case PPPOE_CODE_PADT: |
718 |
|
|
printf("Terminate"); |
719 |
|
|
break; |
720 |
|
|
case PPPOE_CODE_SESSION: |
721 |
|
|
printf("Session"); |
722 |
|
|
break; |
723 |
|
|
default: |
724 |
|
|
printf("Unknown(0x%02x)", p[1]); |
725 |
|
|
break; |
726 |
|
|
} |
727 |
|
|
} |
728 |
|
|
|
729 |
|
|
pppoe_sid = EXTRACT_16BITS(p + 2); |
730 |
|
|
pppoe_len = EXTRACT_16BITS(p + 4); |
731 |
|
|
|
732 |
|
|
if(eflag) |
733 |
|
|
printf(", version %d, type %d, id 0x%04x, length %d", |
734 |
|
|
(p[0] & 0xf), (p[0] & 0xf0) >> 4, pppoe_sid, pppoe_len); |
735 |
|
|
|
736 |
|
|
length -= sizeof(struct pppoe_header); |
737 |
|
|
caplen -= sizeof(struct pppoe_header); |
738 |
|
|
p += sizeof(struct pppoe_header); |
739 |
|
|
|
740 |
|
|
if (pppoe_len > caplen) |
741 |
|
|
pppoe_len = caplen; |
742 |
|
|
|
743 |
|
|
if (pppoe_len < 2) { |
744 |
|
|
printf("[|pppoe]"); |
745 |
|
|
return; |
746 |
|
|
} |
747 |
|
|
proto = EXTRACT_16BITS(p); |
748 |
|
|
|
749 |
|
|
for (i = sizeof(protonames)/sizeof(protonames[0]) - 1; i >= 0; i--) { |
750 |
|
|
if (proto == protonames[i].protocol) { |
751 |
|
|
if (eflag) |
752 |
|
|
printf("\n\t%s: ", protonames[i].name); |
753 |
|
|
switch (proto) { |
754 |
|
|
case PPP_LCP: |
755 |
|
|
handle_lcp(p - 2, length + 2); |
756 |
|
|
break; |
757 |
|
|
case PPP_CHAP: |
758 |
|
|
handle_chap(p - 2, length + 2); |
759 |
|
|
break; |
760 |
|
|
case PPP_PAP: |
761 |
|
|
handle_pap(p - 2, length + 2); |
762 |
|
|
break; |
763 |
|
|
case PPP_IPCP: |
764 |
|
|
handle_ipcp(p - 2, length + 2); |
765 |
|
|
break; |
766 |
|
|
case PPP_IPV6CP: |
767 |
|
|
handle_ipv6cp(p - 2, length + 2); |
768 |
|
|
break; |
769 |
|
|
case PPP_IP: |
770 |
|
|
ip_print(p + 2, length - 2); |
771 |
|
|
break; |
772 |
|
|
case PPP_IPV6: |
773 |
|
|
ip6_print(p + 2, length - 2); |
774 |
|
|
break; |
775 |
|
|
case PPP_IPX: |
776 |
|
|
ipx_print(p + 2, length - 2); |
777 |
|
|
} |
778 |
|
|
break; |
779 |
|
|
} |
780 |
|
|
} |
781 |
|
|
if (i < 0) |
782 |
|
|
printf("\n\t%04x: ", proto); |
783 |
|
|
|
784 |
|
|
if (xflag) |
785 |
|
|
default_print(p + 2, caplen - 2); |
786 |
|
|
putchar('\n'); |
787 |
|
|
} |
788 |
|
|
|
789 |
|
|
int |
790 |
|
|
pppoe_if_print(u_short ethertype, const u_char *p, u_int length, u_int caplen) |
791 |
|
|
{ |
792 |
|
|
u_int16_t pppoe_sid, pppoe_len; |
793 |
|
|
|
794 |
|
|
if (ethertype == ETHERTYPE_PPPOEDISC) |
795 |
|
|
printf("PPPoE-Discovery"); |
796 |
|
|
else |
797 |
|
|
printf("PPPoE-Session"); |
798 |
|
|
|
799 |
|
|
if (caplen < sizeof(struct pppoe_header)) { |
800 |
|
|
printf("[|pppoe]"); |
801 |
|
|
return (1); |
802 |
|
|
} |
803 |
|
|
|
804 |
|
|
printf("\n\tcode "); |
805 |
|
|
switch (p[1]) { |
806 |
|
|
case PPPOE_CODE_PADI: |
807 |
|
|
printf("Initiation"); |
808 |
|
|
break; |
809 |
|
|
case PPPOE_CODE_PADO: |
810 |
|
|
printf("Offer"); |
811 |
|
|
break; |
812 |
|
|
case PPPOE_CODE_PADR: |
813 |
|
|
printf("Request"); |
814 |
|
|
break; |
815 |
|
|
case PPPOE_CODE_PADS: |
816 |
|
|
printf("Confirm"); |
817 |
|
|
break; |
818 |
|
|
case PPPOE_CODE_PADT: |
819 |
|
|
printf("Terminate"); |
820 |
|
|
break; |
821 |
|
|
case PPPOE_CODE_SESSION: |
822 |
|
|
printf("Session"); |
823 |
|
|
break; |
824 |
|
|
default: |
825 |
|
|
printf("Unknown(0x%02x)", p[1]); |
826 |
|
|
break; |
827 |
|
|
} |
828 |
|
|
|
829 |
|
|
pppoe_sid = EXTRACT_16BITS(p + 2); |
830 |
|
|
pppoe_len = EXTRACT_16BITS(p + 4); |
831 |
|
|
printf(", version %d, type %d, id 0x%04x, length %d", |
832 |
|
|
(p[0] & 0xf), (p[0] & 0xf0) >> 4, pppoe_sid, pppoe_len); |
833 |
|
|
|
834 |
|
|
length -= sizeof(struct pppoe_header); |
835 |
|
|
caplen -= sizeof(struct pppoe_header); |
836 |
|
|
p += sizeof(struct pppoe_header); |
837 |
|
|
|
838 |
|
|
if (pppoe_len > caplen) |
839 |
|
|
pppoe_len = caplen; |
840 |
|
|
|
841 |
|
|
if (ethertype == ETHERTYPE_PPPOEDISC) { |
842 |
|
|
while (pppoe_len > 0) { |
843 |
|
|
u_int16_t t_type, t_len; |
844 |
|
|
|
845 |
|
|
if (pppoe_len < 4) { |
846 |
|
|
printf("\n\t[|pppoe]"); |
847 |
|
|
break; |
848 |
|
|
} |
849 |
|
|
t_type = EXTRACT_16BITS(p); |
850 |
|
|
t_len = EXTRACT_16BITS(p + 2); |
851 |
|
|
|
852 |
|
|
pppoe_len -= 4; |
853 |
|
|
p += 4; |
854 |
|
|
|
855 |
|
|
if (pppoe_len < t_len) { |
856 |
|
|
printf("\n\t[|pppoe]"); |
857 |
|
|
break; |
858 |
|
|
} |
859 |
|
|
|
860 |
|
|
printf("\n\ttag "); |
861 |
|
|
switch (t_type) { |
862 |
|
|
case PPPOE_TAG_END_OF_LIST: |
863 |
|
|
printf("End-Of-List"); |
864 |
|
|
break; |
865 |
|
|
case PPPOE_TAG_SERVICE_NAME: |
866 |
|
|
printf("Service-Name"); |
867 |
|
|
break; |
868 |
|
|
case PPPOE_TAG_AC_NAME: |
869 |
|
|
printf("AC-Name"); |
870 |
|
|
break; |
871 |
|
|
case PPPOE_TAG_HOST_UNIQ: |
872 |
|
|
printf("Host-Uniq"); |
873 |
|
|
break; |
874 |
|
|
case PPPOE_TAG_AC_COOKIE: |
875 |
|
|
printf("AC-Cookie"); |
876 |
|
|
break; |
877 |
|
|
case PPPOE_TAG_VENDOR_SPEC: |
878 |
|
|
printf("Vendor-Specific"); |
879 |
|
|
break; |
880 |
|
|
case PPPOE_TAG_RELAY_SESSION: |
881 |
|
|
printf("Relay-Session"); |
882 |
|
|
break; |
883 |
|
|
case PPPOE_TAG_MAX_PAYLOAD: |
884 |
|
|
printf("PPP-Max-Payload"); |
885 |
|
|
break; |
886 |
|
|
case PPPOE_TAG_SERVICE_NAME_ERROR: |
887 |
|
|
printf("Service-Name-Error"); |
888 |
|
|
break; |
889 |
|
|
case PPPOE_TAG_AC_SYSTEM_ERROR: |
890 |
|
|
printf("AC-System-Error"); |
891 |
|
|
break; |
892 |
|
|
case PPPOE_TAG_GENERIC_ERROR: |
893 |
|
|
printf("Generic-Error"); |
894 |
|
|
break; |
895 |
|
|
default: |
896 |
|
|
printf("Unknown(0x%04x)", t_type); |
897 |
|
|
} |
898 |
|
|
printf(", length %u%s", t_len, t_len ? " " : ""); |
899 |
|
|
|
900 |
|
|
if (t_len) { |
901 |
|
|
for (t_type = 0; t_type < t_len; t_type++) { |
902 |
|
|
if (isprint(p[t_type])) |
903 |
|
|
printf("%c", p[t_type]); |
904 |
|
|
else |
905 |
|
|
printf("\\%03o", p[t_type]); |
906 |
|
|
} |
907 |
|
|
} |
908 |
|
|
pppoe_len -= t_len; |
909 |
|
|
p += t_len; |
910 |
|
|
} |
911 |
|
|
} |
912 |
|
|
else if (ethertype == ETHERTYPE_PPPOE) { |
913 |
|
|
u_int16_t proto; |
914 |
|
|
int i; |
915 |
|
|
|
916 |
|
|
if (pppoe_len < 2) { |
917 |
|
|
printf("[|pppoe]"); |
918 |
|
|
return (1); |
919 |
|
|
} |
920 |
|
|
proto = EXTRACT_16BITS(p); |
921 |
|
|
|
922 |
|
|
for (i = sizeof(protonames)/sizeof(protonames[0]) - 1; i >= 0; |
923 |
|
|
i--) { |
924 |
|
|
if (proto == protonames[i].protocol) { |
925 |
|
|
printf("\n\t%s: ", protonames[i].name); |
926 |
|
|
switch (proto) { |
927 |
|
|
case PPP_LCP: |
928 |
|
|
handle_lcp(p - 2, length + 2); |
929 |
|
|
break; |
930 |
|
|
case PPP_CHAP: |
931 |
|
|
handle_chap(p - 2, length + 2); |
932 |
|
|
break; |
933 |
|
|
case PPP_PAP: |
934 |
|
|
handle_pap(p - 2, length + 2); |
935 |
|
|
break; |
936 |
|
|
case PPP_IPCP: |
937 |
|
|
handle_ipcp(p - 2, length + 2); |
938 |
|
|
break; |
939 |
|
|
case PPP_IPV6CP: |
940 |
|
|
handle_ipv6cp(p - 2, length + 2); |
941 |
|
|
break; |
942 |
|
|
case PPP_IP: |
943 |
|
|
ip_print(p + 2, length - 2); |
944 |
|
|
break; |
945 |
|
|
case PPP_IPV6: |
946 |
|
|
ip6_print(p + 2, length - 2); |
947 |
|
|
break; |
948 |
|
|
case PPP_IPX: |
949 |
|
|
ipx_print(p + 2, length - 2); |
950 |
|
|
} |
951 |
|
|
break; |
952 |
|
|
} |
953 |
|
|
} |
954 |
|
|
if (i < 0) |
955 |
|
|
printf("\n\t%04x: ", proto); |
956 |
|
|
} |
957 |
|
|
|
958 |
|
|
return (1); |
959 |
|
|
} |
960 |
|
|
|
961 |
|
|
#else |
962 |
|
|
|
963 |
|
|
#include <sys/types.h> |
964 |
|
|
#include <sys/time.h> |
965 |
|
|
|
966 |
|
|
#include <stdio.h> |
967 |
|
|
|
968 |
|
|
#include "interface.h" |
969 |
|
|
void |
970 |
|
|
ppp_if_print(user, h, p) |
971 |
|
|
u_char *user; |
972 |
|
|
const struct pcap_pkthdr *h; |
973 |
|
|
const u_char *p; |
974 |
|
|
{ |
975 |
|
|
error("not configured for ppp"); |
976 |
|
|
/* NOTREACHED */ |
977 |
|
|
} |
978 |
|
|
#endif |