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freebsd/contrib/tcpdump/print-pptp.c

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/*
* 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.
*
* PPTP support contributed by Motonori Shindo (mshindo@mshindo.net)
*/
#ifndef lint
static const char rcsid[] =
"@(#) $Header: /tcpdump/master/tcpdump/print-pptp.c,v 1.3 2001/10/31 08:54:31 guy Exp $";
#endif
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <sys/types.h>
#include <sys/param.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include "interface.h"
static char tstr[] = " [|pptp]";
#ifndef TRUE
#define TRUE 1
#endif
#ifndef FALSE
#define FALSE 0
#endif
#define PPTP_MSG_TYPE_CTRL 1 /* Control Message */
#define PPTP_MSG_TYPE_MGMT 2 /* Management Message (currently not used */
#define PPTP_MAGIC_COOKIE 0x1a2b3c4d /* for sanity check */
#define PPTP_CTRL_MSG_TYPE_SCCRQ 1
#define PPTP_CTRL_MSG_TYPE_SCCRP 2
#define PPTP_CTRL_MSG_TYPE_StopCCRQ 3
#define PPTP_CTRL_MSG_TYPE_StopCCRP 4
#define PPTP_CTRL_MSG_TYPE_ECHORQ 5
#define PPTP_CTRL_MSG_TYPE_ECHORP 6
#define PPTP_CTRL_MSG_TYPE_OCRQ 7
#define PPTP_CTRL_MSG_TYPE_OCRP 8
#define PPTP_CTRL_MSG_TYPE_ICRQ 9
#define PPTP_CTRL_MSG_TYPE_ICRP 10
#define PPTP_CTRL_MSG_TYPE_ICCN 11
#define PPTP_CTRL_MSG_TYPE_CCRQ 12
#define PPTP_CTRL_MSG_TYPE_CDN 13
#define PPTP_CTRL_MSG_TYPE_WEN 14
#define PPTP_CTRL_MSG_TYPE_SLI 15
#define PPTP_FRAMING_CAP_ASYNC_MASK 0x00000001 /* Aynchronous */
#define PPTP_FRAMING_CAP_SYNC_MASK 0x00000002 /* Synchronous */
#define PPTP_BEARER_CAP_ANALOG_MASK 0x00000001 /* Analog */
#define PPTP_BEARER_CAP_DIGITAL_MASK 0x00000002 /* Digital */
static char *pptp_message_type_string[] = {
"NOT_DEFINED", /* 0 Not defined in the RFC2637 */
"SCCRQ", /* 1 Start-Control-Connection-Request */
"SCCRP", /* 2 Start-Control-Connection-Reply */
"StopCCRQ", /* 3 Stop-Control-Connection-Request */
"StopCCRP", /* 4 Stop-Control-Connection-Reply */
"ECHORQ", /* 5 Echo Request */
"ECHORP", /* 6 Echo Reply */
"OCRQ", /* 7 Outgoing-Call-Request */
"OCRP", /* 8 Outgoing-Call-Reply */
"ICRQ", /* 9 Incoming-Call-Request */
"ICRP", /* 10 Incoming-Call-Reply */
"ICCN", /* 11 Incoming-Call-Connected */
"CCRQ", /* 12 Call-Clear-Request */
"CDN", /* 13 Call-Disconnect-Notify */
"WEN", /* 14 WAN-Error-Notify */
"SLI" /* 15 Set-Link-Info */
#define PPTP_MAX_MSGTYPE_INDEX 16
};
/* common for all PPTP control messages */
struct pptp_hdr {
u_int16_t length;
u_int16_t msg_type;
u_int32_t magic_cookie;
u_int16_t ctrl_msg_type;
u_int16_t reserved0;
};
struct pptp_msg_sccrq {
u_int16_t proto_ver;
u_int16_t reserved1;
u_int32_t framing_cap;
u_int32_t bearer_cap;
u_int16_t max_channel;
u_int16_t firm_rev;
u_char hostname[64];
u_char vendor[64];
};
struct pptp_msg_sccrp {
u_int16_t proto_ver;
u_int8_t result_code;
u_int8_t err_code;
u_int32_t framing_cap;
u_int32_t bearer_cap;
u_int16_t max_channel;
u_int16_t firm_rev;
u_char hostname[64];
u_char vendor[64];
};
struct pptp_msg_stopccrq {
u_int8_t reason;
u_int8_t reserved1;
u_int16_t reserved2;
};
struct pptp_msg_stopccrp {
u_int8_t result_code;
u_int8_t err_code;
u_int16_t reserved1;
};
struct pptp_msg_echorq {
u_int32_t id;
};
struct pptp_msg_echorp {
u_int32_t id;
u_int8_t result_code;
u_int8_t err_code;
u_int16_t reserved1;
};
struct pptp_msg_ocrq {
u_int16_t call_id;
u_int16_t call_ser;
u_int32_t min_bps;
u_int32_t max_bps;
u_int32_t bearer_type;
u_int32_t framing_type;
u_int16_t recv_winsiz;
u_int16_t pkt_proc_delay;
u_int16_t phone_no_len;
u_int16_t reserved1;
u_char phone_no[64];
u_char subaddr[64];
};
struct pptp_msg_ocrp {
u_int16_t call_id;
u_int16_t peer_call_id;
u_int8_t result_code;
u_int8_t err_code;
u_int16_t cause_code;
u_int32_t conn_speed;
u_int16_t recv_winsiz;
u_int16_t pkt_proc_delay;
u_int32_t phy_chan_id;
};
struct pptp_msg_icrq {
u_int16_t call_id;
u_int16_t call_ser;
u_int32_t bearer_type;
u_int32_t phy_chan_id;
u_int16_t dialed_no_len;
u_int16_t dialing_no_len;
u_char dialed_no[64]; /* DNIS */
u_char dialing_no[64]; /* CLID */
u_char subaddr[64];
};
struct pptp_msg_icrp {
u_int16_t call_id;
u_int16_t peer_call_id;
u_int8_t result_code;
u_int8_t err_code;
u_int16_t recv_winsiz;
u_int16_t pkt_proc_delay;
u_int16_t reserved1;
};
struct pptp_msg_iccn {
u_int16_t peer_call_id;
u_int16_t reserved1;
u_int32_t conn_speed;
u_int16_t recv_winsiz;
u_int16_t pkt_proc_delay;
u_int32_t framing_type;
};
struct pptp_msg_ccrq {
u_int16_t call_id;
u_int16_t reserved1;
};
struct pptp_msg_cdn {
u_int16_t call_id;
u_int8_t result_code;
u_int8_t err_code;
u_int16_t cause_code;
u_int16_t reserved1;
u_char call_stats[128];
};
struct pptp_msg_wen {
u_int16_t peer_call_id;
u_int16_t reserved1;
u_int32_t crc_err;
u_int32_t framing_err;
u_int32_t hardware_overrun;
u_int32_t buffer_overrun;
u_int32_t timeout_err;
u_int32_t align_err;
};
struct pptp_msg_sli {
u_int16_t peer_call_id;
u_int16_t reserved1;
u_int32_t send_accm;
u_int32_t recv_accm;
};
/* attributes that appear more than once in above messages:
Number of
occurence attributes
--------------------------------------
2 u_int32_t bearer_cap;
2 u_int32_t bearer_type;
6 u_int16_t call_id;
2 u_int16_t call_ser;
2 u_int16_t cause_code;
2 u_int32_t conn_speed;
6 u_int8_t err_code;
2 u_int16_t firm_rev;
2 u_int32_t framing_cap;
2 u_int32_t framing_type;
2 u_char hostname[64];
2 u_int32_t id;
2 u_int16_t max_channel;
5 u_int16_t peer_call_id;
2 u_int32_t phy_chan_id;
4 u_int16_t pkt_proc_delay;
2 u_int16_t proto_ver;
4 u_int16_t recv_winsiz;
2 u_int8_t reserved1;
9 u_int16_t reserved1;
6 u_int8_t result_code;
2 u_char subaddr[64];
2 u_char vendor[64];
so I will prepare print out functions for these attributes (except for
reserved*).
*/
/******************************************/
/* Attribute-specific print out functions */
/******************************************/
/* In these attribute-specific print-out functions, it't not necessary
to do TCHECK because they are already checked in the caller of
these functions. */
static void
pptp_bearer_cap_print(const u_int32_t *bearer_cap)
{
printf(" BEARER_CAP(");
if (ntohl(*bearer_cap) & PPTP_BEARER_CAP_DIGITAL_MASK) {
printf("D");
}
if (ntohl(*bearer_cap) & PPTP_BEARER_CAP_ANALOG_MASK) {
printf("A");
}
printf(")");
}
static void
pptp_bearer_type_print(const u_int32_t *bearer_type)
{
printf(" BEARER_TYPE(");
switch (ntohl(*bearer_type)) {
case 1:
printf("A"); /* Analog */
break;
case 2:
printf("D"); /* Digital */
break;
case 3:
printf("Any");
break;
default:
printf("?");
break;
}
printf(")");
}
static void
pptp_call_id_print(const u_int16_t *call_id)
{
printf(" CALL_ID(%u)", ntohs(*call_id));
}
static void
pptp_call_ser_print(const u_int16_t *call_ser)
{
printf(" CALL_SER_NUM(%u)", ntohs(*call_ser));
}
static void
pptp_cause_code_print(const u_int16_t *cause_code)
{
printf(" CAUSE_CODE(%u)", ntohs(*cause_code));
}
static void
pptp_conn_speed_print(const u_int32_t *conn_speed)
{
printf(" CONN_SPEED(%lu)", (unsigned long)ntohl(*conn_speed));
}
static void
pptp_err_code_print(const u_int8_t *err_code)
{
printf(" ERR_CODE(%u", *err_code);
if (vflag) {
switch (*err_code) {
case 0:
printf(":None");
break;
case 1:
printf(":Not-Connected");
break;
case 2:
printf(":Bad-Format");
break;
case 3:
printf(":Bad-Valude");
break;
case 4:
printf(":No-Resource");
break;
case 5:
printf(":Bad-Call-ID");
break;
case 6:
printf(":PAC-Error");
break;
default:
printf(":?");
break;
}
}
printf(")");
}
static void
pptp_firm_rev_print(const u_int16_t *firm_rev)
{
printf(" FIRM_REV(%u)", ntohs(*firm_rev));
}
static void
pptp_framing_cap_print(const u_int32_t *framing_cap)
{
printf(" FRAME_CAP(");
if (ntohl(*framing_cap) & PPTP_FRAMING_CAP_ASYNC_MASK) {
printf("A"); /* Async */
}
if (ntohl(*framing_cap) & PPTP_FRAMING_CAP_SYNC_MASK) {
printf("S"); /* Sync */
}
printf(")");
}
static void
pptp_framing_type_print(const u_int32_t *framing_type)
{
printf(" FRAME_TYPE(");
switch (ntohl(*framing_type)) {
case 1:
printf("A"); /* Async */
break;
case 2:
printf("S"); /* Sync */
break;
case 3:
printf("E"); /* Either */
break;
default:
printf("?");
break;
}
printf(")");
}
static void
pptp_hostname_print(const u_char *hostname)
{
printf(" HOSTNAME(%.64s)", hostname);
}
static void
pptp_id_print(const u_int32_t *id)
{
printf(" ID(%lu)", (unsigned long)ntohl(*id));
}
static void
pptp_max_channel_print(const u_int16_t *max_channel)
{
printf(" MAX_CHAN(%u)", ntohs(*max_channel));
}
static void
pptp_peer_call_id_print(const u_int16_t *peer_call_id)
{
printf(" PEER_CALL_ID(%u)", ntohs(*peer_call_id));
}
static void
pptp_phy_chan_id_print(const u_int32_t *phy_chan_id)
{
printf(" PHY_CHAN_ID(%lu)", (unsigned long)ntohl(*phy_chan_id));
}
static void
pptp_pkt_proc_delay_print(const u_int16_t *pkt_proc_delay)
{
printf(" PROC_DELAY(%u)", ntohs(*pkt_proc_delay));
}
static void
pptp_proto_ver_print(const u_int16_t *proto_ver)
{
printf(" PROTO_VER(%u.%u)", /* Version.Revision */
ntohs(*proto_ver) >> 8, ntohs(*proto_ver) & 0xff);
}
static void
pptp_recv_winsiz_print(const u_int16_t *recv_winsiz)
{
printf(" RECV_WIN(%u)", ntohs(*recv_winsiz));
}
static void
pptp_result_code_print(const u_int8_t *result_code, int ctrl_msg_type)
{
printf(" RESULT_CODE(%u", *result_code);
if (vflag) {
switch (ctrl_msg_type) {
case PPTP_CTRL_MSG_TYPE_SCCRP:
switch (*result_code) {
case 1:
printf(":Successful channel establishment");
break;
case 2:
printf(":General error");
break;
case 3:
printf(":Command channel already exists");
break;
case 4:
printf(":Requester is not authorized to establish a command channel");
break;
case 5:
printf(":The protocol version of the requester is not supported");
break;
default:
printf(":?");
break;
}
break;
case PPTP_CTRL_MSG_TYPE_StopCCRP:
case PPTP_CTRL_MSG_TYPE_ECHORP:
switch (*result_code) {
case 1:
printf(":OK");
break;
case 2:
printf(":General Error");
break;
default:
printf(":?");
break;
}
break;
case PPTP_CTRL_MSG_TYPE_OCRP:
switch (*result_code) {
case 1:
printf(":Connected");
break;
case 2:
printf(":General Error");
break;
case 3:
printf(":No Carrier");
break;
case 4:
printf(":Busy");
break;
case 5:
printf(":No Dial Tone");
break;
case 6:
printf(":Time-out");
break;
case 7:
printf(":Do Not Accept");
break;
default:
printf(":?");
break;
}
break;
case PPTP_CTRL_MSG_TYPE_ICRP:
switch (*result_code) {
case 1:
printf(":Connect");
break;
case 2:
printf(":General Error");
break;
case 3:
printf(":Do Not Accept");
break;
default:
printf(":?");
break;
}
break;
case PPTP_CTRL_MSG_TYPE_CDN:
switch (*result_code) {
case 1:
printf(":Lost Carrier");
break;
case 2:
printf(":General Error");
break;
case 3:
printf(":Admin Shutdown");
break;
case 4:
printf(":Request");
default:
printf(":?");
break;
break;
}
default:
/* assertion error */
break;
}
}
printf(")");
}
static void
pptp_subaddr_print(const u_char *subaddr)
{
printf(" SUB_ADDR(%.64s)", subaddr);
}
static void
pptp_vendor_print(const u_char *vendor)
{
printf(" VENDOR(%.64s)", vendor);
}
/************************************/
/* PPTP message print out functions */
/************************************/
static void
pptp_sccrq_print(const u_char *dat)
{
struct pptp_msg_sccrq *ptr = (struct pptp_msg_sccrq *)dat;
TCHECK(ptr->proto_ver);
pptp_proto_ver_print(&ptr->proto_ver);
TCHECK(ptr->reserved1);
TCHECK(ptr->framing_cap);
pptp_framing_cap_print(&ptr->framing_cap);
TCHECK(ptr->bearer_cap);
pptp_bearer_cap_print(&ptr->bearer_cap);
TCHECK(ptr->max_channel);
pptp_max_channel_print(&ptr->max_channel);
TCHECK(ptr->firm_rev);
pptp_firm_rev_print(&ptr->firm_rev);
TCHECK(ptr->hostname);
pptp_hostname_print(&ptr->hostname[0]);
TCHECK(ptr->vendor);
pptp_vendor_print(&ptr->vendor[0]);
return;
trunc:
printf("%s", tstr);
}
static void
pptp_sccrp_print(const u_char *dat)
{
struct pptp_msg_sccrp *ptr = (struct pptp_msg_sccrp *)dat;
TCHECK(ptr->proto_ver);
pptp_proto_ver_print(&ptr->proto_ver);
TCHECK(ptr->result_code);
pptp_result_code_print(&ptr->result_code, PPTP_CTRL_MSG_TYPE_SCCRP);
TCHECK(ptr->err_code);
pptp_err_code_print(&ptr->err_code);
TCHECK(ptr->framing_cap);
pptp_framing_cap_print(&ptr->framing_cap);
TCHECK(ptr->bearer_cap);
pptp_bearer_cap_print(&ptr->bearer_cap);
TCHECK(ptr->max_channel);
pptp_max_channel_print(&ptr->max_channel);
TCHECK(ptr->firm_rev);
pptp_firm_rev_print(&ptr->firm_rev);
TCHECK(ptr->hostname);
pptp_hostname_print(&ptr->hostname[0]);
TCHECK(ptr->vendor);
pptp_vendor_print(&ptr->vendor[0]);
return;
trunc:
printf("%s", tstr);
}
static void
pptp_stopccrq_print(const u_char *dat)
{
struct pptp_msg_stopccrq *ptr = (struct pptp_msg_stopccrq *)dat;
TCHECK(ptr->reason);
printf(" REASON(%u", ptr->reason);
if (vflag) {
switch (ptr->reason) {
case 1:
printf(":None");
break;
case 2:
printf(":Stop-Protocol");
break;
case 3:
printf(":Stop-Local-Shutdown");
break;
default:
printf(":?");
break;
}
}
printf(")");
TCHECK(ptr->reserved1);
TCHECK(ptr->reserved2);
return;
trunc:
printf("%s", tstr);
}
static void
pptp_stopccrp_print(const u_char *dat)
{
struct pptp_msg_stopccrp *ptr = (struct pptp_msg_stopccrp *)dat;
TCHECK(ptr->result_code);
pptp_result_code_print(&ptr->result_code, PPTP_CTRL_MSG_TYPE_StopCCRP);
TCHECK(ptr->err_code);
pptp_err_code_print(&ptr->err_code);
TCHECK(ptr->reserved1);
return;
trunc:
printf("%s", tstr);
}
static void
pptp_echorq_print(const u_char *dat)
{
struct pptp_msg_echorq *ptr = (struct pptp_msg_echorq *)dat;
TCHECK(ptr->id);
pptp_id_print(&ptr->id);
return;
trunc:
printf("%s", tstr);
}
static void
pptp_echorp_print(const u_char *dat)
{
struct pptp_msg_echorp *ptr = (struct pptp_msg_echorp *)dat;
TCHECK(ptr->id);
pptp_id_print(&ptr->id);
TCHECK(ptr->result_code);
pptp_result_code_print(&ptr->result_code, PPTP_CTRL_MSG_TYPE_ECHORP);
TCHECK(ptr->err_code);
pptp_err_code_print(&ptr->err_code);
TCHECK(ptr->reserved1);
return;
trunc:
printf("%s", tstr);
}
static void
pptp_ocrq_print(const u_char *dat)
{
struct pptp_msg_ocrq *ptr = (struct pptp_msg_ocrq *)dat;
TCHECK(ptr->call_id);
pptp_call_id_print(&ptr->call_id);
TCHECK(ptr->call_ser);
pptp_call_ser_print(&ptr->call_ser);
TCHECK(ptr->min_bps);
printf(" MIN_BPS(%lu)", (unsigned long)ntohl(ptr->min_bps));
TCHECK(ptr->max_bps);
printf(" MAX_BPS(%lu)", (unsigned long)ntohl(ptr->max_bps));
TCHECK(ptr->bearer_type);
pptp_bearer_type_print(&ptr->bearer_type);
TCHECK(ptr->framing_type);
pptp_framing_type_print(&ptr->framing_type);
TCHECK(ptr->recv_winsiz);
pptp_recv_winsiz_print(&ptr->recv_winsiz);
TCHECK(ptr->pkt_proc_delay);
pptp_pkt_proc_delay_print(&ptr->pkt_proc_delay);
TCHECK(ptr->phone_no_len);
printf(" PHONE_NO_LEN(%u)", ntohs(ptr->phone_no_len));
TCHECK(ptr->reserved1);
TCHECK(ptr->phone_no);
printf(" PHONE_NO(%.64s)", ptr->phone_no);
TCHECK(ptr->subaddr);
pptp_subaddr_print(&ptr->subaddr[0]);
return;
trunc:
printf("%s", tstr);
}
static void
pptp_ocrp_print(const u_char *dat)
{
struct pptp_msg_ocrp *ptr = (struct pptp_msg_ocrp *)dat;
TCHECK(ptr->call_id);
pptp_call_id_print(&ptr->call_id);
TCHECK(ptr->peer_call_id);
pptp_peer_call_id_print(&ptr->peer_call_id);
TCHECK(ptr->result_code);
pptp_result_code_print(&ptr->result_code, PPTP_CTRL_MSG_TYPE_OCRP);
TCHECK(ptr->err_code);
pptp_err_code_print(&ptr->err_code);
TCHECK(ptr->cause_code);
pptp_cause_code_print(&ptr->cause_code);
TCHECK(ptr->conn_speed);
pptp_conn_speed_print(&ptr->conn_speed);
TCHECK(ptr->recv_winsiz);
pptp_recv_winsiz_print(&ptr->recv_winsiz);
TCHECK(ptr->pkt_proc_delay);
pptp_pkt_proc_delay_print(&ptr->pkt_proc_delay);
TCHECK(ptr->phy_chan_id);
pptp_phy_chan_id_print(&ptr->phy_chan_id);
return;
trunc:
printf("%s", tstr);
}
static void
pptp_icrq_print(const u_char *dat)
{
struct pptp_msg_icrq *ptr = (struct pptp_msg_icrq *)dat;
TCHECK(ptr->call_id);
pptp_call_id_print(&ptr->call_id);
TCHECK(ptr->call_ser);
pptp_call_ser_print(&ptr->call_ser);
TCHECK(ptr->bearer_type);
pptp_bearer_type_print(&ptr->bearer_type);
TCHECK(ptr->phy_chan_id);
pptp_phy_chan_id_print(&ptr->phy_chan_id);
TCHECK(ptr->dialed_no_len);
printf(" DIALED_NO_LEN(%u)", ntohs(ptr->dialed_no_len));
TCHECK(ptr->dialing_no_len);
printf(" DIALING_NO_LEN(%u)", ntohs(ptr->dialing_no_len));
TCHECK(ptr->dialed_no);
printf(" DIALED_NO(%.64s)", ptr->dialed_no);
TCHECK(ptr->dialing_no);
printf(" DIALING_NO(%.64s)", ptr->dialing_no);
TCHECK(ptr->subaddr);
pptp_subaddr_print(&ptr->subaddr[0]);
return;
trunc:
printf("%s", tstr);
}
static void
pptp_icrp_print(const u_char *dat)
{
struct pptp_msg_icrp *ptr = (struct pptp_msg_icrp *)dat;
TCHECK(ptr->call_id);
pptp_call_id_print(&ptr->call_id);
TCHECK(ptr->peer_call_id);
pptp_peer_call_id_print(&ptr->peer_call_id);
TCHECK(ptr->result_code);
pptp_result_code_print(&ptr->result_code, PPTP_CTRL_MSG_TYPE_ICRP);
TCHECK(ptr->err_code);
pptp_err_code_print(&ptr->err_code);
TCHECK(ptr->recv_winsiz);
pptp_recv_winsiz_print(&ptr->recv_winsiz);
TCHECK(ptr->pkt_proc_delay);
pptp_pkt_proc_delay_print(&ptr->pkt_proc_delay);
TCHECK(ptr->reserved1);
return;
trunc:
printf("%s", tstr);
}
static void
pptp_iccn_print(const u_char *dat)
{
struct pptp_msg_iccn *ptr = (struct pptp_msg_iccn *)dat;
TCHECK(ptr->peer_call_id);
pptp_peer_call_id_print(&ptr->peer_call_id);
TCHECK(ptr->reserved1);
TCHECK(ptr->conn_speed);
pptp_conn_speed_print(&ptr->conn_speed);
TCHECK(ptr->recv_winsiz);
pptp_recv_winsiz_print(&ptr->recv_winsiz);
TCHECK(ptr->pkt_proc_delay);
pptp_pkt_proc_delay_print(&ptr->pkt_proc_delay);
TCHECK(ptr->framing_type);
pptp_framing_type_print(&ptr->framing_type);
return;
trunc:
printf("%s", tstr);
}
static void
pptp_ccrq_print(const u_char *dat)
{
struct pptp_msg_ccrq *ptr = (struct pptp_msg_ccrq *)dat;
TCHECK(ptr->call_id);
pptp_call_id_print(&ptr->call_id);
TCHECK(ptr->reserved1);
return;
trunc:
printf("%s", tstr);
}
static void
pptp_cdn_print(const u_char *dat)
{
struct pptp_msg_cdn *ptr = (struct pptp_msg_cdn *)dat;
TCHECK(ptr->call_id);
pptp_call_id_print(&ptr->call_id);
TCHECK(ptr->result_code);
pptp_result_code_print(&ptr->result_code, PPTP_CTRL_MSG_TYPE_CDN);
TCHECK(ptr->err_code);
pptp_err_code_print(&ptr->err_code);
TCHECK(ptr->cause_code);
pptp_cause_code_print(&ptr->cause_code);
TCHECK(ptr->reserved1);
TCHECK(ptr->call_stats);
printf(" CALL_STATS(%.128s)", ptr->call_stats);
return;
trunc:
printf("%s", tstr);
}
static void
pptp_wen_print(const u_char *dat)
{
struct pptp_msg_wen *ptr = (struct pptp_msg_wen *)dat;
TCHECK(ptr->peer_call_id);
pptp_peer_call_id_print(&ptr->peer_call_id);
TCHECK(ptr->reserved1);
TCHECK(ptr->crc_err);
printf(" CRC_ERR(%lu)", (unsigned long)ntohl(ptr->crc_err));
TCHECK(ptr->framing_err);
printf(" FRAMING_ERR(%lu)", (unsigned long)ntohl(ptr->framing_err));
TCHECK(ptr->hardware_overrun);
printf(" HARDWARE_OVERRUN(%lu)",
(unsigned long)ntohl(ptr->hardware_overrun));
TCHECK(ptr->buffer_overrun);
printf(" BUFFER_OVERRUN(%lu)",
(unsigned long)ntohl(ptr->buffer_overrun));
TCHECK(ptr->timeout_err);
printf(" TIMEOUT_ERR(%lu)", (unsigned long)ntohl(ptr->timeout_err));
TCHECK(ptr->align_err);
printf(" ALIGN_ERR(%lu)", (unsigned long)ntohl(ptr->align_err));
return;
trunc:
printf("%s", tstr);
}
static void
pptp_sli_print(const u_char *dat)
{
struct pptp_msg_sli *ptr = (struct pptp_msg_sli *)dat;
TCHECK(ptr->peer_call_id);
pptp_peer_call_id_print(&ptr->peer_call_id);
TCHECK(ptr->reserved1);
TCHECK(ptr->send_accm);
printf(" SEND_ACCM(0x%08lx)", (unsigned long)ntohl(ptr->send_accm));
TCHECK(ptr->recv_accm);
printf(" RECV_ACCM(0x%08lx)", (unsigned long)ntohl(ptr->recv_accm));
return;
trunc:
printf("%s", tstr);
}
void
pptp_print(const u_char *dat, u_int length)
{
const struct pptp_hdr *hdr;
u_int32_t mc;
u_int16_t ctrl_msg_type;
printf(": pptp");
hdr = (struct pptp_hdr *)dat;
TCHECK(hdr->length);
if (vflag) {
printf(" Length=%u", ntohs(hdr->length));
}
TCHECK(hdr->msg_type);
if (vflag) {
switch(ntohs(hdr->msg_type)) {
case PPTP_MSG_TYPE_CTRL:
printf(" CTRL-MSG");
break;
case PPTP_MSG_TYPE_MGMT:
printf(" MGMT-MSG");
break;
default:
printf(" UNKNOWN-MSG-TYPE");
break;
}
}
TCHECK(hdr->magic_cookie);
mc = ntohl(hdr->magic_cookie);
if (mc != PPTP_MAGIC_COOKIE) {
printf(" UNEXPECTED Magic-Cookie!!(%08x)", mc);
}
if (vflag || mc != PPTP_MAGIC_COOKIE) {
printf(" Magic-Cookie=%08x", mc);
}
TCHECK(hdr->ctrl_msg_type);
ctrl_msg_type = ntohs(hdr->ctrl_msg_type);
if (ctrl_msg_type < PPTP_MAX_MSGTYPE_INDEX) {
printf(" CTRL_MSGTYPE=%s",
pptp_message_type_string[ctrl_msg_type]);
} else {
printf(" UNKNOWN_CTRL_MSGTYPE(%u)", ctrl_msg_type);
}
TCHECK(hdr->reserved0);
dat += 12;
switch(ctrl_msg_type) {
case PPTP_CTRL_MSG_TYPE_SCCRQ:
pptp_sccrq_print(dat);
break;
case PPTP_CTRL_MSG_TYPE_SCCRP:
pptp_sccrp_print(dat);
break;
case PPTP_CTRL_MSG_TYPE_StopCCRQ:
pptp_stopccrq_print(dat);
break;
case PPTP_CTRL_MSG_TYPE_StopCCRP:
pptp_stopccrp_print(dat);
break;
case PPTP_CTRL_MSG_TYPE_ECHORQ:
pptp_echorq_print(dat);
break;
case PPTP_CTRL_MSG_TYPE_ECHORP:
pptp_echorp_print(dat);
break;
case PPTP_CTRL_MSG_TYPE_OCRQ:
pptp_ocrq_print(dat);
break;
case PPTP_CTRL_MSG_TYPE_OCRP:
pptp_ocrp_print(dat);
break;
case PPTP_CTRL_MSG_TYPE_ICRQ:
pptp_icrq_print(dat);
break;
case PPTP_CTRL_MSG_TYPE_ICRP:
pptp_icrp_print(dat);
break;
case PPTP_CTRL_MSG_TYPE_ICCN:
pptp_iccn_print(dat);
break;
case PPTP_CTRL_MSG_TYPE_CCRQ:
pptp_ccrq_print(dat);
break;
case PPTP_CTRL_MSG_TYPE_CDN:
pptp_cdn_print(dat);
break;
case PPTP_CTRL_MSG_TYPE_WEN:
pptp_wen_print(dat);
break;
case PPTP_CTRL_MSG_TYPE_SLI:
pptp_sli_print(dat);
break;
default:
/* do nothing */
break;
}
return;
trunc:
printf("%s", tstr);
}
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