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-rw-r--r--contrib/tcpdump/print-l2tp.c722
1 files changed, 0 insertions, 722 deletions
diff --git a/contrib/tcpdump/print-l2tp.c b/contrib/tcpdump/print-l2tp.c
deleted file mode 100644
index 52766b5de48a6..0000000000000
--- a/contrib/tcpdump/print-l2tp.c
+++ /dev/null
@@ -1,722 +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 1.17.2.2 2005/04/20 21:50:16 guy 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]";
-
-#ifndef TRUE
-#define TRUE 1
-#endif
-
-#ifndef FALSE
-#define FALSE 0
-#endif
-
-#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);
-}
generated by cgit v1.2.3 (git 2.25.1) at 2025-06-16 16:35:58 +0000