diff options
Diffstat (limited to 'contrib/tcpdump/print-l2tp.c')
-rw-r--r-- | contrib/tcpdump/print-l2tp.c | 714 |
1 files changed, 0 insertions, 714 deletions
diff --git a/contrib/tcpdump/print-l2tp.c b/contrib/tcpdump/print-l2tp.c deleted file mode 100644 index 6ceab43..0000000 --- a/contrib/tcpdump/print-l2tp.c +++ /dev/null @@ -1,714 +0,0 @@ -/* - * Copyright (c) 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. - * - * L2TP support contributed by Motonori Shindo (mshindo@mshindo.net) - */ - -#ifndef lint -static const char rcsid[] _U_ = - "@(#) $Header: /tcpdump/master/tcpdump/print-l2tp.c,v 1.17.2.3 2006/06/23 02:07:27 hannes Exp $"; -#endif - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#include <tcpdump-stdinc.h> - -#include <stdio.h> - -#include "l2tp.h" -#include "interface.h" -#include "extract.h" - -static char tstr[] = " [|l2tp]"; - -#define L2TP_MSGTYPE_SCCRQ 1 /* Start-Control-Connection-Request */ -#define L2TP_MSGTYPE_SCCRP 2 /* Start-Control-Connection-Reply */ -#define L2TP_MSGTYPE_SCCCN 3 /* Start-Control-Connection-Connected */ -#define L2TP_MSGTYPE_STOPCCN 4 /* Stop-Control-Connection-Notification */ -#define L2TP_MSGTYPE_HELLO 6 /* Hello */ -#define L2TP_MSGTYPE_OCRQ 7 /* Outgoing-Call-Request */ -#define L2TP_MSGTYPE_OCRP 8 /* Outgoing-Call-Reply */ -#define L2TP_MSGTYPE_OCCN 9 /* Outgoing-Call-Connected */ -#define L2TP_MSGTYPE_ICRQ 10 /* Incoming-Call-Request */ -#define L2TP_MSGTYPE_ICRP 11 /* Incoming-Call-Reply */ -#define L2TP_MSGTYPE_ICCN 12 /* Incoming-Call-Connected */ -#define L2TP_MSGTYPE_CDN 14 /* Call-Disconnect-Notify */ -#define L2TP_MSGTYPE_WEN 15 /* WAN-Error-Notify */ -#define L2TP_MSGTYPE_SLI 16 /* Set-Link-Info */ - -static struct tok l2tp_msgtype2str[] = { - { L2TP_MSGTYPE_SCCRQ, "SCCRQ" }, - { L2TP_MSGTYPE_SCCRP, "SCCRP" }, - { L2TP_MSGTYPE_SCCCN, "SCCCN" }, - { L2TP_MSGTYPE_STOPCCN, "StopCCN" }, - { L2TP_MSGTYPE_HELLO, "HELLO" }, - { L2TP_MSGTYPE_OCRQ, "OCRQ" }, - { L2TP_MSGTYPE_OCRP, "OCRP" }, - { L2TP_MSGTYPE_OCCN, "OCCN" }, - { L2TP_MSGTYPE_ICRQ, "ICRQ" }, - { L2TP_MSGTYPE_ICRP, "ICRP" }, - { L2TP_MSGTYPE_ICCN, "ICCN" }, - { L2TP_MSGTYPE_CDN, "CDN" }, - { L2TP_MSGTYPE_WEN, "WEN" }, - { L2TP_MSGTYPE_SLI, "SLI" }, - { 0, NULL } -}; - -#define L2TP_AVP_MSGTYPE 0 /* Message Type */ -#define L2TP_AVP_RESULT_CODE 1 /* Result Code */ -#define L2TP_AVP_PROTO_VER 2 /* Protocol Version */ -#define L2TP_AVP_FRAMING_CAP 3 /* Framing Capabilities */ -#define L2TP_AVP_BEARER_CAP 4 /* Bearer Capabilities */ -#define L2TP_AVP_TIE_BREAKER 5 /* Tie Breaker */ -#define L2TP_AVP_FIRM_VER 6 /* Firmware Revision */ -#define L2TP_AVP_HOST_NAME 7 /* Host Name */ -#define L2TP_AVP_VENDOR_NAME 8 /* Vendor Name */ -#define L2TP_AVP_ASSND_TUN_ID 9 /* Assigned Tunnel ID */ -#define L2TP_AVP_RECV_WIN_SIZE 10 /* Receive Window Size */ -#define L2TP_AVP_CHALLENGE 11 /* Challenge */ -#define L2TP_AVP_Q931_CC 12 /* Q.931 Cause Code */ -#define L2TP_AVP_CHALLENGE_RESP 13 /* Challenge Response */ -#define L2TP_AVP_ASSND_SESS_ID 14 /* Assigned Session ID */ -#define L2TP_AVP_CALL_SER_NUM 15 /* Call Serial Number */ -#define L2TP_AVP_MINIMUM_BPS 16 /* Minimum BPS */ -#define L2TP_AVP_MAXIMUM_BPS 17 /* Maximum BPS */ -#define L2TP_AVP_BEARER_TYPE 18 /* Bearer Type */ -#define L2TP_AVP_FRAMING_TYPE 19 /* Framing Type */ -#define L2TP_AVP_PACKET_PROC_DELAY 20 /* Packet Processing Delay (OBSOLETE) */ -#define L2TP_AVP_CALLED_NUMBER 21 /* Called Number */ -#define L2TP_AVP_CALLING_NUMBER 22 /* Calling Number */ -#define L2TP_AVP_SUB_ADDRESS 23 /* Sub-Address */ -#define L2TP_AVP_TX_CONN_SPEED 24 /* (Tx) Connect Speed */ -#define L2TP_AVP_PHY_CHANNEL_ID 25 /* Physical Channel ID */ -#define L2TP_AVP_INI_RECV_LCP 26 /* Initial Received LCP CONFREQ */ -#define L2TP_AVP_LAST_SENT_LCP 27 /* Last Sent LCP CONFREQ */ -#define L2TP_AVP_LAST_RECV_LCP 28 /* Last Received LCP CONFREQ */ -#define L2TP_AVP_PROXY_AUTH_TYPE 29 /* Proxy Authen Type */ -#define L2TP_AVP_PROXY_AUTH_NAME 30 /* Proxy Authen Name */ -#define L2TP_AVP_PROXY_AUTH_CHAL 31 /* Proxy Authen Challenge */ -#define L2TP_AVP_PROXY_AUTH_ID 32 /* Proxy Authen ID */ -#define L2TP_AVP_PROXY_AUTH_RESP 33 /* Proxy Authen Response */ -#define L2TP_AVP_CALL_ERRORS 34 /* Call Errors */ -#define L2TP_AVP_ACCM 35 /* ACCM */ -#define L2TP_AVP_RANDOM_VECTOR 36 /* Random Vector */ -#define L2TP_AVP_PRIVATE_GRP_ID 37 /* Private Group ID */ -#define L2TP_AVP_RX_CONN_SPEED 38 /* (Rx) Connect Speed */ -#define L2TP_AVP_SEQ_REQUIRED 39 /* Sequencing Required */ -#define L2TP_AVP_PPP_DISCON_CC 46 /* PPP Disconnect Cause Code */ - -static struct tok l2tp_avp2str[] = { - { L2TP_AVP_MSGTYPE, "MSGTYPE" }, - { L2TP_AVP_RESULT_CODE, "RESULT_CODE" }, - { L2TP_AVP_PROTO_VER, "PROTO_VER" }, - { L2TP_AVP_FRAMING_CAP, "FRAMING_CAP" }, - { L2TP_AVP_BEARER_CAP, "BEARER_CAP" }, - { L2TP_AVP_TIE_BREAKER, "TIE_BREAKER" }, - { L2TP_AVP_FIRM_VER, "FIRM_VER" }, - { L2TP_AVP_HOST_NAME, "HOST_NAME" }, - { L2TP_AVP_VENDOR_NAME, "VENDOR_NAME" }, - { L2TP_AVP_ASSND_TUN_ID, "ASSND_TUN_ID" }, - { L2TP_AVP_RECV_WIN_SIZE, "RECV_WIN_SIZE" }, - { L2TP_AVP_CHALLENGE, "CHALLENGE" }, - { L2TP_AVP_Q931_CC, "Q931_CC", }, - { L2TP_AVP_CHALLENGE_RESP, "CHALLENGE_RESP" }, - { L2TP_AVP_ASSND_SESS_ID, "ASSND_SESS_ID" }, - { L2TP_AVP_CALL_SER_NUM, "CALL_SER_NUM" }, - { L2TP_AVP_MINIMUM_BPS, "MINIMUM_BPS" }, - { L2TP_AVP_MAXIMUM_BPS, "MAXIMUM_BPS" }, - { L2TP_AVP_BEARER_TYPE, "BEARER_TYPE" }, - { L2TP_AVP_FRAMING_TYPE, "FRAMING_TYPE" }, - { L2TP_AVP_PACKET_PROC_DELAY, "PACKET_PROC_DELAY" }, - { L2TP_AVP_CALLED_NUMBER, "CALLED_NUMBER" }, - { L2TP_AVP_CALLING_NUMBER, "CALLING_NUMBER" }, - { L2TP_AVP_SUB_ADDRESS, "SUB_ADDRESS" }, - { L2TP_AVP_TX_CONN_SPEED, "TX_CONN_SPEED" }, - { L2TP_AVP_PHY_CHANNEL_ID, "PHY_CHANNEL_ID" }, - { L2TP_AVP_INI_RECV_LCP, "INI_RECV_LCP" }, - { L2TP_AVP_LAST_SENT_LCP, "LAST_SENT_LCP" }, - { L2TP_AVP_LAST_RECV_LCP, "LAST_RECV_LCP" }, - { L2TP_AVP_PROXY_AUTH_TYPE, "PROXY_AUTH_TYPE" }, - { L2TP_AVP_PROXY_AUTH_NAME, "PROXY_AUTH_NAME" }, - { L2TP_AVP_PROXY_AUTH_CHAL, "PROXY_AUTH_CHAL" }, - { L2TP_AVP_PROXY_AUTH_ID, "PROXY_AUTH_ID" }, - { L2TP_AVP_PROXY_AUTH_RESP, "PROXY_AUTH_RESP" }, - { L2TP_AVP_CALL_ERRORS, "CALL_ERRORS" }, - { L2TP_AVP_ACCM, "ACCM" }, - { L2TP_AVP_RANDOM_VECTOR, "RANDOM_VECTOR" }, - { L2TP_AVP_PRIVATE_GRP_ID, "PRIVATE_GRP_ID" }, - { L2TP_AVP_RX_CONN_SPEED, "RX_CONN_SPEED" }, - { L2TP_AVP_SEQ_REQUIRED, "SEQ_REQUIRED" }, - { L2TP_AVP_PPP_DISCON_CC, "PPP_DISCON_CC" }, - { 0, NULL } -}; - -static struct tok l2tp_authentype2str[] = { - { L2TP_AUTHEN_TYPE_RESERVED, "Reserved" }, - { L2TP_AUTHEN_TYPE_TEXTUAL, "Textual" }, - { L2TP_AUTHEN_TYPE_CHAP, "CHAP" }, - { L2TP_AUTHEN_TYPE_PAP, "PAP" }, - { L2TP_AUTHEN_TYPE_NO_AUTH, "No Auth" }, - { L2TP_AUTHEN_TYPE_MSCHAPv1, "MS-CHAPv1" }, - { 0, NULL } -}; - -#define L2TP_PPP_DISCON_CC_DIRECTION_GLOBAL 0 -#define L2TP_PPP_DISCON_CC_DIRECTION_AT_PEER 1 -#define L2TP_PPP_DISCON_CC_DIRECTION_AT_LOCAL 2 - -static struct tok l2tp_cc_direction2str[] = { - { L2TP_PPP_DISCON_CC_DIRECTION_GLOBAL, "global error" }, - { L2TP_PPP_DISCON_CC_DIRECTION_AT_PEER, "at peer" }, - { L2TP_PPP_DISCON_CC_DIRECTION_AT_LOCAL,"at local" }, - { 0, NULL } -}; - -#if 0 -static char *l2tp_result_code_StopCCN[] = { - "Reserved", - "General request to clear control connection", - "General error--Error Code indicates the problem", - "Control channel already exists", - "Requester is not authorized to establish a control channel", - "The protocol version of the requester is not supported", - "Requester is being shut down", - "Finite State Machine error" -#define L2TP_MAX_RESULT_CODE_STOPCC_INDEX 8 -}; -#endif - -#if 0 -static char *l2tp_result_code_CDN[] = { - "Reserved", - "Call disconnected due to loss of carrier", - "Call disconnected for the reason indicated in error code", - "Call disconnected for administrative reasons", - "Call failed due to lack of appropriate facilities being " \ - "available (temporary condition)", - "Call failed due to lack of appropriate facilities being " \ - "available (permanent condition)", - "Invalid destination", - "Call failed due to no carrier detected", - "Call failed due to detection of a busy signal", - "Call failed due to lack of a dial tone", - "Call was not established within time allotted by LAC", - "Call was connected but no appropriate framing was detected" -#define L2TP_MAX_RESULT_CODE_CDN_INDEX 12 -}; -#endif - -#if 0 -static char *l2tp_error_code_general[] = { - "No general error", - "No control connection exists yet for this LAC-LNS pair", - "Length is wrong", - "One of the field values was out of range or " \ - "reserved field was non-zero" - "Insufficient resources to handle this operation now", - "The Session ID is invalid in this context", - "A generic vendor-specific error occurred in the LAC", - "Try another" -#define L2TP_MAX_ERROR_CODE_GENERAL_INDEX 8 -}; -#endif - -/******************************/ -/* generic print out routines */ -/******************************/ -static void -print_string(const u_char *dat, u_int length) -{ - u_int i; - for (i=0; i<length; i++) { - printf("%c", *dat++); - } -} - -static void -print_octets(const u_char *dat, u_int length) -{ - u_int i; - for (i=0; i<length; i++) { - printf("%02x", *dat++); - } -} - -static void -print_16bits_val(const u_int16_t *dat) -{ - printf("%u", EXTRACT_16BITS(dat)); -} - -static void -print_32bits_val(const u_int32_t *dat) -{ - printf("%lu", (u_long)EXTRACT_32BITS(dat)); -} - -/***********************************/ -/* AVP-specific print out routines */ -/***********************************/ -static void -l2tp_msgtype_print(const u_char *dat) -{ - u_int16_t *ptr = (u_int16_t*)dat; - - printf("%s", tok2str(l2tp_msgtype2str, "MSGTYPE-#%u", - EXTRACT_16BITS(ptr))); -} - -static void -l2tp_result_code_print(const u_char *dat, u_int length) -{ - u_int16_t *ptr = (u_int16_t *)dat; - - printf("%u", EXTRACT_16BITS(ptr)); ptr++; /* Result Code */ - if (length > 2) { /* Error Code (opt) */ - printf("/%u", EXTRACT_16BITS(ptr)); ptr++; - } - if (length > 4) { /* Error Message (opt) */ - printf(" "); - print_string((u_char *)ptr, length - 4); - } -} - -static void -l2tp_proto_ver_print(const u_int16_t *dat) -{ - printf("%u.%u", (EXTRACT_16BITS(dat) >> 8), - (EXTRACT_16BITS(dat) & 0xff)); -} - -static void -l2tp_framing_cap_print(const u_char *dat) -{ - u_int32_t *ptr = (u_int32_t *)dat; - - if (EXTRACT_32BITS(ptr) & L2TP_FRAMING_CAP_ASYNC_MASK) { - printf("A"); - } - if (EXTRACT_32BITS(ptr) & L2TP_FRAMING_CAP_SYNC_MASK) { - printf("S"); - } -} - -static void -l2tp_bearer_cap_print(const u_char *dat) -{ - u_int32_t *ptr = (u_int32_t *)dat; - - if (EXTRACT_32BITS(ptr) & L2TP_BEARER_CAP_ANALOG_MASK) { - printf("A"); - } - if (EXTRACT_32BITS(ptr) & L2TP_BEARER_CAP_DIGITAL_MASK) { - printf("D"); - } -} - -static void -l2tp_q931_cc_print(const u_char *dat, u_int length) -{ - print_16bits_val((u_int16_t *)dat); - printf(", %02x", dat[2]); - if (length > 3) { - printf(" "); - print_string(dat+3, length-3); - } -} - -static void -l2tp_bearer_type_print(const u_char *dat) -{ - u_int32_t *ptr = (u_int32_t *)dat; - - if (EXTRACT_32BITS(ptr) & L2TP_BEARER_TYPE_ANALOG_MASK) { - printf("A"); - } - if (EXTRACT_32BITS(ptr) & L2TP_BEARER_TYPE_DIGITAL_MASK) { - printf("D"); - } -} - -static void -l2tp_framing_type_print(const u_char *dat) -{ - u_int32_t *ptr = (u_int32_t *)dat; - - if (EXTRACT_32BITS(ptr) & L2TP_FRAMING_TYPE_ASYNC_MASK) { - printf("A"); - } - if (EXTRACT_32BITS(ptr) & L2TP_FRAMING_TYPE_SYNC_MASK) { - printf("S"); - } -} - -static void -l2tp_packet_proc_delay_print(void) -{ - printf("obsolete"); -} - -static void -l2tp_proxy_auth_type_print(const u_char *dat) -{ - u_int16_t *ptr = (u_int16_t *)dat; - - printf("%s", tok2str(l2tp_authentype2str, - "AuthType-#%u", EXTRACT_16BITS(ptr))); -} - -static void -l2tp_proxy_auth_id_print(const u_char *dat) -{ - u_int16_t *ptr = (u_int16_t *)dat; - - printf("%u", EXTRACT_16BITS(ptr) & L2TP_PROXY_AUTH_ID_MASK); -} - -static void -l2tp_call_errors_print(const u_char *dat) -{ - u_int16_t *ptr = (u_int16_t *)dat; - u_int16_t val_h, val_l; - - ptr++; /* skip "Reserved" */ - - val_h = EXTRACT_16BITS(ptr); ptr++; - val_l = EXTRACT_16BITS(ptr); ptr++; - printf("CRCErr=%u ", (val_h<<16) + val_l); - - val_h = EXTRACT_16BITS(ptr); ptr++; - val_l = EXTRACT_16BITS(ptr); ptr++; - printf("FrameErr=%u ", (val_h<<16) + val_l); - - val_h = EXTRACT_16BITS(ptr); ptr++; - val_l = EXTRACT_16BITS(ptr); ptr++; - printf("HardOver=%u ", (val_h<<16) + val_l); - - val_h = EXTRACT_16BITS(ptr); ptr++; - val_l = EXTRACT_16BITS(ptr); ptr++; - printf("BufOver=%u ", (val_h<<16) + val_l); - - val_h = EXTRACT_16BITS(ptr); ptr++; - val_l = EXTRACT_16BITS(ptr); ptr++; - printf("Timeout=%u ", (val_h<<16) + val_l); - - val_h = EXTRACT_16BITS(ptr); ptr++; - val_l = EXTRACT_16BITS(ptr); ptr++; - printf("AlignErr=%u ", (val_h<<16) + val_l); -} - -static void -l2tp_accm_print(const u_char *dat) -{ - u_int16_t *ptr = (u_int16_t *)dat; - u_int16_t val_h, val_l; - - ptr++; /* skip "Reserved" */ - - val_h = EXTRACT_16BITS(ptr); ptr++; - val_l = EXTRACT_16BITS(ptr); ptr++; - printf("send=%08x ", (val_h<<16) + val_l); - - val_h = EXTRACT_16BITS(ptr); ptr++; - val_l = EXTRACT_16BITS(ptr); ptr++; - printf("recv=%08x ", (val_h<<16) + val_l); -} - -static void -l2tp_ppp_discon_cc_print(const u_char *dat, u_int length) -{ - u_int16_t *ptr = (u_int16_t *)dat; - - printf("%04x, ", EXTRACT_16BITS(ptr)); ptr++; /* Disconnect Code */ - printf("%04x ", EXTRACT_16BITS(ptr)); ptr++; /* Control Protocol Number */ - printf("%s", tok2str(l2tp_cc_direction2str, - "Direction-#%u", *((u_char *)ptr++))); - - if (length > 5) { - printf(" "); - print_string((const u_char *)ptr, length-5); - } -} - -static void -l2tp_avp_print(const u_char *dat, int length) -{ - u_int len; - const u_int16_t *ptr = (u_int16_t *)dat; - u_int16_t attr_type; - int hidden = FALSE; - - if (length <= 0) { - return; - } - - printf(" "); - - TCHECK(*ptr); /* Flags & Length */ - len = EXTRACT_16BITS(ptr) & L2TP_AVP_HDR_LEN_MASK; - - /* If it is not long enough to contain the header, we'll give up. */ - if (len < 6) - goto trunc; - - /* If it goes past the end of the remaining length of the packet, - we'll give up. */ - if (len > (u_int)length) - goto trunc; - - /* If it goes past the end of the remaining length of the captured - data, we'll give up. */ - TCHECK2(*ptr, len); - /* After this point, no need to worry about truncation */ - - if (EXTRACT_16BITS(ptr) & L2TP_AVP_HDR_FLAG_MANDATORY) { - printf("*"); - } - if (EXTRACT_16BITS(ptr) & L2TP_AVP_HDR_FLAG_HIDDEN) { - hidden = TRUE; - printf("?"); - } - ptr++; - - if (EXTRACT_16BITS(ptr)) { - /* Vendor Specific Attribute */ - printf("VENDOR%04x:", EXTRACT_16BITS(ptr)); ptr++; - printf("ATTR%04x", EXTRACT_16BITS(ptr)); ptr++; - printf("("); - print_octets((u_char *)ptr, len-6); - printf(")"); - } else { - /* IETF-defined Attributes */ - ptr++; - attr_type = EXTRACT_16BITS(ptr); ptr++; - printf("%s", tok2str(l2tp_avp2str, "AVP-#%u", attr_type)); - printf("("); - if (hidden) { - printf("???"); - } else { - switch (attr_type) { - case L2TP_AVP_MSGTYPE: - l2tp_msgtype_print((u_char *)ptr); - break; - case L2TP_AVP_RESULT_CODE: - l2tp_result_code_print((u_char *)ptr, len-6); - break; - case L2TP_AVP_PROTO_VER: - l2tp_proto_ver_print(ptr); - break; - case L2TP_AVP_FRAMING_CAP: - l2tp_framing_cap_print((u_char *)ptr); - break; - case L2TP_AVP_BEARER_CAP: - l2tp_bearer_cap_print((u_char *)ptr); - break; - case L2TP_AVP_TIE_BREAKER: - print_octets((u_char *)ptr, 8); - break; - case L2TP_AVP_FIRM_VER: - case L2TP_AVP_ASSND_TUN_ID: - case L2TP_AVP_RECV_WIN_SIZE: - case L2TP_AVP_ASSND_SESS_ID: - print_16bits_val(ptr); - break; - case L2TP_AVP_HOST_NAME: - case L2TP_AVP_VENDOR_NAME: - case L2TP_AVP_CALLING_NUMBER: - case L2TP_AVP_CALLED_NUMBER: - case L2TP_AVP_SUB_ADDRESS: - case L2TP_AVP_PROXY_AUTH_NAME: - case L2TP_AVP_PRIVATE_GRP_ID: - print_string((u_char *)ptr, len-6); - break; - case L2TP_AVP_CHALLENGE: - case L2TP_AVP_INI_RECV_LCP: - case L2TP_AVP_LAST_SENT_LCP: - case L2TP_AVP_LAST_RECV_LCP: - case L2TP_AVP_PROXY_AUTH_CHAL: - case L2TP_AVP_PROXY_AUTH_RESP: - case L2TP_AVP_RANDOM_VECTOR: - print_octets((u_char *)ptr, len-6); - break; - case L2TP_AVP_Q931_CC: - l2tp_q931_cc_print((u_char *)ptr, len-6); - break; - case L2TP_AVP_CHALLENGE_RESP: - print_octets((u_char *)ptr, 16); - break; - case L2TP_AVP_CALL_SER_NUM: - case L2TP_AVP_MINIMUM_BPS: - case L2TP_AVP_MAXIMUM_BPS: - case L2TP_AVP_TX_CONN_SPEED: - case L2TP_AVP_PHY_CHANNEL_ID: - case L2TP_AVP_RX_CONN_SPEED: - print_32bits_val((u_int32_t *)ptr); - break; - case L2TP_AVP_BEARER_TYPE: - l2tp_bearer_type_print((u_char *)ptr); - break; - case L2TP_AVP_FRAMING_TYPE: - l2tp_framing_type_print((u_char *)ptr); - break; - case L2TP_AVP_PACKET_PROC_DELAY: - l2tp_packet_proc_delay_print(); - break; - case L2TP_AVP_PROXY_AUTH_TYPE: - l2tp_proxy_auth_type_print((u_char *)ptr); - break; - case L2TP_AVP_PROXY_AUTH_ID: - l2tp_proxy_auth_id_print((u_char *)ptr); - break; - case L2TP_AVP_CALL_ERRORS: - l2tp_call_errors_print((u_char *)ptr); - break; - case L2TP_AVP_ACCM: - l2tp_accm_print((u_char *)ptr); - break; - case L2TP_AVP_SEQ_REQUIRED: - break; /* No Attribute Value */ - case L2TP_AVP_PPP_DISCON_CC: - l2tp_ppp_discon_cc_print((u_char *)ptr, len-6); - break; - default: - break; - } - } - printf(")"); - } - - l2tp_avp_print(dat+len, length-len); - return; - - trunc: - printf("|..."); -} - - -void -l2tp_print(const u_char *dat, u_int length) -{ - const u_int16_t *ptr = (u_int16_t *)dat; - u_int cnt = 0; /* total octets consumed */ - u_int16_t pad; - int flag_t, flag_l, flag_s, flag_o; - u_int16_t l2tp_len; - - flag_t = flag_l = flag_s = flag_o = FALSE; - - TCHECK(*ptr); /* Flags & Version */ - if ((EXTRACT_16BITS(ptr) & L2TP_VERSION_MASK) == L2TP_VERSION_L2TP) { - printf(" l2tp:"); - } else if ((EXTRACT_16BITS(ptr) & L2TP_VERSION_MASK) == L2TP_VERSION_L2F) { - printf(" l2f:"); - return; /* nothing to do */ - } else { - printf(" Unknown Version, neither L2F(1) nor L2TP(2)"); - return; /* nothing we can do */ - } - - printf("["); - if (EXTRACT_16BITS(ptr) & L2TP_FLAG_TYPE) { - flag_t = TRUE; - printf("T"); - } - if (EXTRACT_16BITS(ptr) & L2TP_FLAG_LENGTH) { - flag_l = TRUE; - printf("L"); - } - if (EXTRACT_16BITS(ptr) & L2TP_FLAG_SEQUENCE) { - flag_s = TRUE; - printf("S"); - } - if (EXTRACT_16BITS(ptr) & L2TP_FLAG_OFFSET) { - flag_o = TRUE; - printf("O"); - } - if (EXTRACT_16BITS(ptr) & L2TP_FLAG_PRIORITY) - printf("P"); - printf("]"); - - ptr++; - cnt += 2; - - if (flag_l) { - TCHECK(*ptr); /* Length */ - l2tp_len = EXTRACT_16BITS(ptr); ptr++; - cnt += 2; - } else { - l2tp_len = 0; - } - - TCHECK(*ptr); /* Tunnel ID */ - printf("(%u/", EXTRACT_16BITS(ptr)); ptr++; - cnt += 2; - TCHECK(*ptr); /* Session ID */ - printf("%u)", EXTRACT_16BITS(ptr)); ptr++; - cnt += 2; - - if (flag_s) { - TCHECK(*ptr); /* Ns */ - printf("Ns=%u,", EXTRACT_16BITS(ptr)); ptr++; - cnt += 2; - TCHECK(*ptr); /* Nr */ - printf("Nr=%u", EXTRACT_16BITS(ptr)); ptr++; - cnt += 2; - } - - if (flag_o) { - TCHECK(*ptr); /* Offset Size */ - pad = EXTRACT_16BITS(ptr); ptr++; - ptr += pad / sizeof(*ptr); - cnt += (2 + pad); - } - - if (flag_l) { - if (length < l2tp_len) { - printf(" Length %u larger than packet", l2tp_len); - return; - } - length = l2tp_len; - } - if (length < cnt) { - printf(" Length %u smaller than header length", length); - return; - } - if (flag_t) { - if (!flag_l) { - printf(" No length"); - return; - } - if (length - cnt == 0) { - printf(" ZLB"); - } else { - l2tp_avp_print((u_char *)ptr, length - cnt); - } - } else { - printf(" {"); - ppp_print((u_char *)ptr, length - cnt); - printf("}"); - } - - return; - - trunc: - printf("%s", tstr); -} |