mirror of
https://github.com/the-tcpdump-group/tcpdump.git
synced 2024-12-12 19:33:43 +08:00
ee68aa3646
The exceptions are currently: Some EXTRACT_ in print-juniper.c, not used on packet buffer pointer. An EXTRACT_BE_U_3 in addrtoname.c, not always used on packet buffer pointer.
1034 lines
27 KiB
C
1034 lines
27 KiB
C
/*
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* Copyright (c) 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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* PPTP support contributed by Motonori Shindo (mshindo@mshindo.net)
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*/
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/* \summary: Point-to-Point Tunnelling Protocol (PPTP) printer */
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/* specification: RFC 2637 */
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include "netdissect-stdinc.h"
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#include "netdissect.h"
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#include "extract.h"
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#define PPTP_MSG_TYPE_CTRL 1 /* Control Message */
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#define PPTP_MSG_TYPE_MGMT 2 /* Management Message (currently not used */
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#define PPTP_MAGIC_COOKIE 0x1a2b3c4d /* for sanity check */
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#define PPTP_CTRL_MSG_TYPE_SCCRQ 1
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#define PPTP_CTRL_MSG_TYPE_SCCRP 2
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#define PPTP_CTRL_MSG_TYPE_StopCCRQ 3
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#define PPTP_CTRL_MSG_TYPE_StopCCRP 4
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#define PPTP_CTRL_MSG_TYPE_ECHORQ 5
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#define PPTP_CTRL_MSG_TYPE_ECHORP 6
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#define PPTP_CTRL_MSG_TYPE_OCRQ 7
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#define PPTP_CTRL_MSG_TYPE_OCRP 8
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#define PPTP_CTRL_MSG_TYPE_ICRQ 9
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#define PPTP_CTRL_MSG_TYPE_ICRP 10
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#define PPTP_CTRL_MSG_TYPE_ICCN 11
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#define PPTP_CTRL_MSG_TYPE_CCRQ 12
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#define PPTP_CTRL_MSG_TYPE_CDN 13
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#define PPTP_CTRL_MSG_TYPE_WEN 14
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#define PPTP_CTRL_MSG_TYPE_SLI 15
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#define PPTP_FRAMING_CAP_ASYNC_MASK 0x00000001 /* Aynchronous */
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#define PPTP_FRAMING_CAP_SYNC_MASK 0x00000002 /* Synchronous */
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#define PPTP_BEARER_CAP_ANALOG_MASK 0x00000001 /* Analog */
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#define PPTP_BEARER_CAP_DIGITAL_MASK 0x00000002 /* Digital */
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static const char *pptp_message_type_string[] = {
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"NOT_DEFINED", /* 0 Not defined in the RFC2637 */
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"SCCRQ", /* 1 Start-Control-Connection-Request */
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"SCCRP", /* 2 Start-Control-Connection-Reply */
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"StopCCRQ", /* 3 Stop-Control-Connection-Request */
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"StopCCRP", /* 4 Stop-Control-Connection-Reply */
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"ECHORQ", /* 5 Echo Request */
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"ECHORP", /* 6 Echo Reply */
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"OCRQ", /* 7 Outgoing-Call-Request */
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"OCRP", /* 8 Outgoing-Call-Reply */
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"ICRQ", /* 9 Incoming-Call-Request */
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"ICRP", /* 10 Incoming-Call-Reply */
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"ICCN", /* 11 Incoming-Call-Connected */
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"CCRQ", /* 12 Call-Clear-Request */
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"CDN", /* 13 Call-Disconnect-Notify */
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"WEN", /* 14 WAN-Error-Notify */
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"SLI" /* 15 Set-Link-Info */
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#define PPTP_MAX_MSGTYPE_INDEX 16
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};
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/* common for all PPTP control messages */
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struct pptp_hdr {
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nd_uint16_t length;
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nd_uint16_t msg_type;
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nd_uint32_t magic_cookie;
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nd_uint16_t ctrl_msg_type;
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nd_uint16_t reserved0;
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};
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struct pptp_msg_sccrq {
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nd_uint16_t proto_ver;
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nd_uint16_t reserved1;
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nd_uint32_t framing_cap;
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nd_uint32_t bearer_cap;
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nd_uint16_t max_channel;
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nd_uint16_t firm_rev;
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nd_byte hostname[64];
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nd_byte vendor[64];
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};
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struct pptp_msg_sccrp {
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nd_uint16_t proto_ver;
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nd_uint8_t result_code;
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nd_uint8_t err_code;
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nd_uint32_t framing_cap;
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nd_uint32_t bearer_cap;
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nd_uint16_t max_channel;
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nd_uint16_t firm_rev;
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nd_byte hostname[64];
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nd_byte vendor[64];
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};
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struct pptp_msg_stopccrq {
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nd_uint8_t reason;
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nd_uint8_t reserved1;
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nd_uint16_t reserved2;
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};
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struct pptp_msg_stopccrp {
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nd_uint8_t result_code;
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nd_uint8_t err_code;
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nd_uint16_t reserved1;
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};
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struct pptp_msg_echorq {
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nd_uint32_t id;
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};
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struct pptp_msg_echorp {
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nd_uint32_t id;
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nd_uint8_t result_code;
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nd_uint8_t err_code;
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nd_uint16_t reserved1;
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};
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struct pptp_msg_ocrq {
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nd_uint16_t call_id;
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nd_uint16_t call_ser;
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nd_uint32_t min_bps;
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nd_uint32_t max_bps;
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nd_uint32_t bearer_type;
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nd_uint32_t framing_type;
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nd_uint16_t recv_winsiz;
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nd_uint16_t pkt_proc_delay;
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nd_uint16_t phone_no_len;
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nd_uint16_t reserved1;
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nd_byte phone_no[64];
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nd_byte subaddr[64];
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};
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struct pptp_msg_ocrp {
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nd_uint16_t call_id;
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nd_uint16_t peer_call_id;
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nd_uint8_t result_code;
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nd_uint8_t err_code;
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nd_uint16_t cause_code;
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nd_uint32_t conn_speed;
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nd_uint16_t recv_winsiz;
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nd_uint16_t pkt_proc_delay;
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nd_uint32_t phy_chan_id;
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};
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struct pptp_msg_icrq {
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nd_uint16_t call_id;
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nd_uint16_t call_ser;
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nd_uint32_t bearer_type;
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nd_uint32_t phy_chan_id;
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nd_uint16_t dialed_no_len;
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nd_uint16_t dialing_no_len;
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nd_byte dialed_no[64]; /* DNIS */
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nd_byte dialing_no[64]; /* CLID */
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nd_byte subaddr[64];
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};
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struct pptp_msg_icrp {
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nd_uint16_t call_id;
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nd_uint16_t peer_call_id;
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nd_uint8_t result_code;
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nd_uint8_t err_code;
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nd_uint16_t recv_winsiz;
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nd_uint16_t pkt_proc_delay;
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nd_uint16_t reserved1;
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};
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struct pptp_msg_iccn {
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nd_uint16_t peer_call_id;
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nd_uint16_t reserved1;
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nd_uint32_t conn_speed;
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nd_uint16_t recv_winsiz;
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nd_uint16_t pkt_proc_delay;
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nd_uint32_t framing_type;
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};
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struct pptp_msg_ccrq {
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nd_uint16_t call_id;
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nd_uint16_t reserved1;
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};
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struct pptp_msg_cdn {
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nd_uint16_t call_id;
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nd_uint8_t result_code;
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nd_uint8_t err_code;
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nd_uint16_t cause_code;
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nd_uint16_t reserved1;
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nd_byte call_stats[128];
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};
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struct pptp_msg_wen {
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nd_uint16_t peer_call_id;
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nd_uint16_t reserved1;
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nd_uint32_t crc_err;
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nd_uint32_t framing_err;
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nd_uint32_t hardware_overrun;
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nd_uint32_t buffer_overrun;
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nd_uint32_t timeout_err;
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nd_uint32_t align_err;
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};
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struct pptp_msg_sli {
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nd_uint16_t peer_call_id;
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nd_uint16_t reserved1;
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nd_uint32_t send_accm;
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nd_uint32_t recv_accm;
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};
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/* attributes that appear more than once in above messages:
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Number of
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occurrence attributes
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--------------------------------------
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2 uint32_t bearer_cap;
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2 uint32_t bearer_type;
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6 uint16_t call_id;
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2 uint16_t call_ser;
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2 uint16_t cause_code;
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2 uint32_t conn_speed;
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6 uint8_t err_code;
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2 uint16_t firm_rev;
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2 uint32_t framing_cap;
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2 uint32_t framing_type;
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2 u_char hostname[64];
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2 uint32_t id;
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2 uint16_t max_channel;
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5 uint16_t peer_call_id;
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2 uint32_t phy_chan_id;
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4 uint16_t pkt_proc_delay;
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2 uint16_t proto_ver;
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4 uint16_t recv_winsiz;
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2 uint8_t reserved1;
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9 uint16_t reserved1;
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6 uint8_t result_code;
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2 u_char subaddr[64];
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2 u_char vendor[64];
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so I will prepare print out functions for these attributes (except for
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reserved*).
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*/
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#define PRINT_RESERVED_IF_NOT_ZERO_1(reserved) \
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if (GET_U_1(reserved)) \
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ND_PRINT(" [ERROR: reserved=%u must be zero]", \
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GET_U_1(reserved));
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#define PRINT_RESERVED_IF_NOT_ZERO_2(reserved) \
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if (GET_BE_U_2(reserved)) \
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ND_PRINT(" [ERROR: reserved=%u must be zero]", \
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GET_BE_U_2(reserved));
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/******************************************/
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/* Attribute-specific print out functions */
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/******************************************/
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/* In these attribute-specific print-out functions, it't not necessary
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to do ND_TCHECK because they are already checked in the caller of
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these functions. */
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static void
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pptp_bearer_cap_print(netdissect_options *ndo,
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const nd_uint32_t *bearer_cap)
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{
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ND_PRINT(" BEARER_CAP(%s%s)",
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GET_BE_U_4(*bearer_cap) & PPTP_BEARER_CAP_DIGITAL_MASK ? "D" : "",
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GET_BE_U_4(*bearer_cap) & PPTP_BEARER_CAP_ANALOG_MASK ? "A" : "");
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}
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static const struct tok pptp_btype_str[] = {
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{ 1, "A" }, /* Analog */
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{ 2, "D" }, /* Digital */
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{ 3, "Any" },
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{ 0, NULL }
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};
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static void
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pptp_bearer_type_print(netdissect_options *ndo,
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const nd_uint32_t *bearer_type)
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{
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ND_PRINT(" BEARER_TYPE(%s)",
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tok2str(pptp_btype_str, "?", GET_BE_U_4(*bearer_type)));
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}
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static void
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pptp_call_id_print(netdissect_options *ndo,
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const nd_uint16_t *call_id)
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{
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ND_PRINT(" CALL_ID(%u)", GET_BE_U_2(*call_id));
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}
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static void
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pptp_call_ser_print(netdissect_options *ndo,
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const nd_uint16_t *call_ser)
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{
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ND_PRINT(" CALL_SER_NUM(%u)", GET_BE_U_2(*call_ser));
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}
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static void
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pptp_cause_code_print(netdissect_options *ndo,
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const nd_uint16_t *cause_code)
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{
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ND_PRINT(" CAUSE_CODE(%u)", GET_BE_U_2(*cause_code));
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}
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static void
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pptp_conn_speed_print(netdissect_options *ndo,
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const nd_uint32_t *conn_speed)
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{
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ND_PRINT(" CONN_SPEED(%u)", GET_BE_U_4(*conn_speed));
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}
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static const struct tok pptp_errcode_str[] = {
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{ 0, "None" },
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{ 1, "Not-Connected" },
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{ 2, "Bad-Format" },
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{ 3, "Bad-Value" },
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{ 4, "No-Resource" },
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{ 5, "Bad-Call-ID" },
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{ 6, "PAC-Error" },
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{ 0, NULL }
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};
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static void
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pptp_err_code_print(netdissect_options *ndo,
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const nd_uint8_t *err_code)
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{
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ND_PRINT(" ERR_CODE(%u", GET_U_1(*err_code));
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if (ndo->ndo_vflag) {
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ND_PRINT(":%s",
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tok2str(pptp_errcode_str, "?", GET_U_1(*err_code)));
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}
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ND_PRINT(")");
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}
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static void
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pptp_firm_rev_print(netdissect_options *ndo,
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const nd_uint16_t *firm_rev)
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{
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ND_PRINT(" FIRM_REV(%u)", GET_BE_U_2(*firm_rev));
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}
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static void
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pptp_framing_cap_print(netdissect_options *ndo,
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const nd_uint32_t *framing_cap)
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{
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ND_PRINT(" FRAME_CAP(");
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if (GET_BE_U_4(*framing_cap) & PPTP_FRAMING_CAP_ASYNC_MASK) {
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ND_PRINT("A"); /* Async */
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}
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if (GET_BE_U_4(*framing_cap) & PPTP_FRAMING_CAP_SYNC_MASK) {
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ND_PRINT("S"); /* Sync */
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}
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ND_PRINT(")");
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}
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static const struct tok pptp_ftype_str[] = {
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{ 1, "A" }, /* Async */
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{ 2, "S" }, /* Sync */
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{ 3, "E" }, /* Either */
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{ 0, NULL }
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};
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static void
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pptp_framing_type_print(netdissect_options *ndo,
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const nd_uint32_t *framing_type)
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{
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ND_PRINT(" FRAME_TYPE(%s)",
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tok2str(pptp_ftype_str, "?", GET_BE_U_4(*framing_type)));
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}
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static void
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pptp_hostname_print(netdissect_options *ndo,
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const u_char *hostname)
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{
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ND_PRINT(" HOSTNAME(%.64s)", hostname);
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}
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static void
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pptp_id_print(netdissect_options *ndo,
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const nd_uint32_t *id)
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{
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ND_PRINT(" ID(%u)", GET_BE_U_4(*id));
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}
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static void
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pptp_max_channel_print(netdissect_options *ndo,
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const nd_uint16_t *max_channel)
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{
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ND_PRINT(" MAX_CHAN(%u)", GET_BE_U_2(*max_channel));
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}
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static void
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pptp_peer_call_id_print(netdissect_options *ndo,
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const nd_uint16_t *peer_call_id)
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{
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ND_PRINT(" PEER_CALL_ID(%u)", GET_BE_U_2(*peer_call_id));
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}
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static void
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pptp_phy_chan_id_print(netdissect_options *ndo,
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const nd_uint32_t *phy_chan_id)
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{
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ND_PRINT(" PHY_CHAN_ID(%u)", GET_BE_U_4(*phy_chan_id));
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}
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static void
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pptp_pkt_proc_delay_print(netdissect_options *ndo,
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const nd_uint16_t *pkt_proc_delay)
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{
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ND_PRINT(" PROC_DELAY(%u)", GET_BE_U_2(*pkt_proc_delay));
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}
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static void
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pptp_proto_ver_print(netdissect_options *ndo,
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const nd_uint16_t *proto_ver)
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{
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ND_PRINT(" PROTO_VER(%u.%u)", /* Version.Revision */
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GET_BE_U_2(*proto_ver) >> 8,
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GET_BE_U_2(*proto_ver) & 0xff);
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}
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static void
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pptp_recv_winsiz_print(netdissect_options *ndo,
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const nd_uint16_t *recv_winsiz)
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{
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ND_PRINT(" RECV_WIN(%u)", GET_BE_U_2(*recv_winsiz));
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}
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static const struct tok pptp_scrrp_str[] = {
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{ 1, "Successful channel establishment" },
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{ 2, "General error" },
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{ 3, "Command channel already exists" },
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{ 4, "Requester is not authorized to establish a command channel" },
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{ 5, "The protocol version of the requester is not supported" },
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{ 0, NULL }
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};
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static const struct tok pptp_echorp_str[] = {
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{ 1, "OK" },
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{ 2, "General Error" },
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{ 0, NULL }
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};
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static const struct tok pptp_ocrp_str[] = {
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{ 1, "Connected" },
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{ 2, "General Error" },
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{ 3, "No Carrier" },
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{ 4, "Busy" },
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{ 5, "No Dial Tone" },
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{ 6, "Time-out" },
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{ 7, "Do Not Accept" },
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{ 0, NULL }
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};
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static const struct tok pptp_icrp_str[] = {
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{ 1, "Connect" },
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{ 2, "General Error" },
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{ 3, "Do Not Accept" },
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{ 0, NULL }
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};
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static const struct tok pptp_cdn_str[] = {
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{ 1, "Lost Carrier" },
|
|
{ 2, "General Error" },
|
|
{ 3, "Admin Shutdown" },
|
|
{ 4, "Request" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static void
|
|
pptp_result_code_print(netdissect_options *ndo,
|
|
const nd_uint8_t *result_code, int ctrl_msg_type)
|
|
{
|
|
ND_PRINT(" RESULT_CODE(%u", GET_U_1(*result_code));
|
|
if (ndo->ndo_vflag) {
|
|
const struct tok *dict =
|
|
ctrl_msg_type == PPTP_CTRL_MSG_TYPE_SCCRP ? pptp_scrrp_str :
|
|
ctrl_msg_type == PPTP_CTRL_MSG_TYPE_StopCCRP ? pptp_echorp_str :
|
|
ctrl_msg_type == PPTP_CTRL_MSG_TYPE_ECHORP ? pptp_echorp_str :
|
|
ctrl_msg_type == PPTP_CTRL_MSG_TYPE_OCRP ? pptp_ocrp_str :
|
|
ctrl_msg_type == PPTP_CTRL_MSG_TYPE_ICRP ? pptp_icrp_str :
|
|
ctrl_msg_type == PPTP_CTRL_MSG_TYPE_CDN ? pptp_cdn_str :
|
|
NULL; /* assertion error */
|
|
if (dict != NULL)
|
|
ND_PRINT(":%s",
|
|
tok2str(dict, "?", GET_U_1(*result_code)));
|
|
}
|
|
ND_PRINT(")");
|
|
}
|
|
|
|
static void
|
|
pptp_subaddr_print(netdissect_options *ndo,
|
|
const u_char *subaddr)
|
|
{
|
|
ND_PRINT(" SUB_ADDR(%.64s)", subaddr);
|
|
}
|
|
|
|
static void
|
|
pptp_vendor_print(netdissect_options *ndo,
|
|
const u_char *vendor)
|
|
{
|
|
ND_PRINT(" VENDOR(%.64s)", vendor);
|
|
}
|
|
|
|
/************************************/
|
|
/* PPTP message print out functions */
|
|
/************************************/
|
|
static void
|
|
pptp_sccrq_print(netdissect_options *ndo,
|
|
const u_char *dat)
|
|
{
|
|
const struct pptp_msg_sccrq *ptr = (const struct pptp_msg_sccrq *)dat;
|
|
|
|
ND_TCHECK_2(ptr->proto_ver);
|
|
pptp_proto_ver_print(ndo, &ptr->proto_ver);
|
|
ND_TCHECK_2(ptr->reserved1);
|
|
PRINT_RESERVED_IF_NOT_ZERO_2(ptr->reserved1);
|
|
ND_TCHECK_4(ptr->framing_cap);
|
|
pptp_framing_cap_print(ndo, &ptr->framing_cap);
|
|
ND_TCHECK_4(ptr->bearer_cap);
|
|
pptp_bearer_cap_print(ndo, &ptr->bearer_cap);
|
|
ND_TCHECK_2(ptr->max_channel);
|
|
pptp_max_channel_print(ndo, &ptr->max_channel);
|
|
ND_TCHECK_2(ptr->firm_rev);
|
|
pptp_firm_rev_print(ndo, &ptr->firm_rev);
|
|
ND_TCHECK_SIZE(&ptr->hostname);
|
|
pptp_hostname_print(ndo, &ptr->hostname[0]);
|
|
ND_TCHECK_SIZE(&ptr->vendor);
|
|
pptp_vendor_print(ndo, &ptr->vendor[0]);
|
|
|
|
return;
|
|
|
|
trunc:
|
|
nd_print_trunc(ndo);
|
|
}
|
|
|
|
static void
|
|
pptp_sccrp_print(netdissect_options *ndo,
|
|
const u_char *dat)
|
|
{
|
|
const struct pptp_msg_sccrp *ptr = (const struct pptp_msg_sccrp *)dat;
|
|
|
|
ND_TCHECK_2(ptr->proto_ver);
|
|
pptp_proto_ver_print(ndo, &ptr->proto_ver);
|
|
ND_TCHECK_1(ptr->result_code);
|
|
pptp_result_code_print(ndo, &ptr->result_code, PPTP_CTRL_MSG_TYPE_SCCRP);
|
|
ND_TCHECK_1(ptr->err_code);
|
|
pptp_err_code_print(ndo, &ptr->err_code);
|
|
ND_TCHECK_4(ptr->framing_cap);
|
|
pptp_framing_cap_print(ndo, &ptr->framing_cap);
|
|
ND_TCHECK_4(ptr->bearer_cap);
|
|
pptp_bearer_cap_print(ndo, &ptr->bearer_cap);
|
|
ND_TCHECK_2(ptr->max_channel);
|
|
pptp_max_channel_print(ndo, &ptr->max_channel);
|
|
ND_TCHECK_2(ptr->firm_rev);
|
|
pptp_firm_rev_print(ndo, &ptr->firm_rev);
|
|
ND_TCHECK_SIZE(&ptr->hostname);
|
|
pptp_hostname_print(ndo, &ptr->hostname[0]);
|
|
ND_TCHECK_SIZE(&ptr->vendor);
|
|
pptp_vendor_print(ndo, &ptr->vendor[0]);
|
|
|
|
return;
|
|
|
|
trunc:
|
|
nd_print_trunc(ndo);
|
|
}
|
|
|
|
static void
|
|
pptp_stopccrq_print(netdissect_options *ndo,
|
|
const u_char *dat)
|
|
{
|
|
const struct pptp_msg_stopccrq *ptr = (const struct pptp_msg_stopccrq *)dat;
|
|
|
|
ND_TCHECK_1(ptr->reason);
|
|
ND_PRINT(" REASON(%u", GET_U_1(ptr->reason));
|
|
if (ndo->ndo_vflag) {
|
|
switch (GET_U_1(ptr->reason)) {
|
|
case 1:
|
|
ND_PRINT(":None");
|
|
break;
|
|
case 2:
|
|
ND_PRINT(":Stop-Protocol");
|
|
break;
|
|
case 3:
|
|
ND_PRINT(":Stop-Local-Shutdown");
|
|
break;
|
|
default:
|
|
ND_PRINT(":?");
|
|
break;
|
|
}
|
|
}
|
|
ND_PRINT(")");
|
|
ND_TCHECK_1(ptr->reserved1);
|
|
PRINT_RESERVED_IF_NOT_ZERO_1(ptr->reserved1);
|
|
ND_TCHECK_2(ptr->reserved2);
|
|
PRINT_RESERVED_IF_NOT_ZERO_2(ptr->reserved2);
|
|
|
|
return;
|
|
|
|
trunc:
|
|
nd_print_trunc(ndo);
|
|
}
|
|
|
|
static void
|
|
pptp_stopccrp_print(netdissect_options *ndo,
|
|
const u_char *dat)
|
|
{
|
|
const struct pptp_msg_stopccrp *ptr = (const struct pptp_msg_stopccrp *)dat;
|
|
|
|
ND_TCHECK_1(ptr->result_code);
|
|
pptp_result_code_print(ndo, &ptr->result_code, PPTP_CTRL_MSG_TYPE_StopCCRP);
|
|
ND_TCHECK_1(ptr->err_code);
|
|
pptp_err_code_print(ndo, &ptr->err_code);
|
|
ND_TCHECK_2(ptr->reserved1);
|
|
PRINT_RESERVED_IF_NOT_ZERO_2(ptr->reserved1);
|
|
|
|
return;
|
|
|
|
trunc:
|
|
nd_print_trunc(ndo);
|
|
}
|
|
|
|
static void
|
|
pptp_echorq_print(netdissect_options *ndo,
|
|
const u_char *dat)
|
|
{
|
|
const struct pptp_msg_echorq *ptr = (const struct pptp_msg_echorq *)dat;
|
|
|
|
ND_TCHECK_4(ptr->id);
|
|
pptp_id_print(ndo, &ptr->id);
|
|
|
|
return;
|
|
|
|
trunc:
|
|
nd_print_trunc(ndo);
|
|
}
|
|
|
|
static void
|
|
pptp_echorp_print(netdissect_options *ndo,
|
|
const u_char *dat)
|
|
{
|
|
const struct pptp_msg_echorp *ptr = (const struct pptp_msg_echorp *)dat;
|
|
|
|
ND_TCHECK_4(ptr->id);
|
|
pptp_id_print(ndo, &ptr->id);
|
|
ND_TCHECK_1(ptr->result_code);
|
|
pptp_result_code_print(ndo, &ptr->result_code, PPTP_CTRL_MSG_TYPE_ECHORP);
|
|
ND_TCHECK_1(ptr->err_code);
|
|
pptp_err_code_print(ndo, &ptr->err_code);
|
|
ND_TCHECK_2(ptr->reserved1);
|
|
PRINT_RESERVED_IF_NOT_ZERO_2(ptr->reserved1);
|
|
|
|
return;
|
|
|
|
trunc:
|
|
nd_print_trunc(ndo);
|
|
}
|
|
|
|
static void
|
|
pptp_ocrq_print(netdissect_options *ndo,
|
|
const u_char *dat)
|
|
{
|
|
const struct pptp_msg_ocrq *ptr = (const struct pptp_msg_ocrq *)dat;
|
|
|
|
ND_TCHECK_2(ptr->call_id);
|
|
pptp_call_id_print(ndo, &ptr->call_id);
|
|
ND_TCHECK_2(ptr->call_ser);
|
|
pptp_call_ser_print(ndo, &ptr->call_ser);
|
|
ND_TCHECK_4(ptr->min_bps);
|
|
ND_PRINT(" MIN_BPS(%u)", GET_BE_U_4(ptr->min_bps));
|
|
ND_TCHECK_4(ptr->max_bps);
|
|
ND_PRINT(" MAX_BPS(%u)", GET_BE_U_4(ptr->max_bps));
|
|
ND_TCHECK_4(ptr->bearer_type);
|
|
pptp_bearer_type_print(ndo, &ptr->bearer_type);
|
|
ND_TCHECK_4(ptr->framing_type);
|
|
pptp_framing_type_print(ndo, &ptr->framing_type);
|
|
ND_TCHECK_2(ptr->recv_winsiz);
|
|
pptp_recv_winsiz_print(ndo, &ptr->recv_winsiz);
|
|
ND_TCHECK_2(ptr->pkt_proc_delay);
|
|
pptp_pkt_proc_delay_print(ndo, &ptr->pkt_proc_delay);
|
|
ND_TCHECK_2(ptr->phone_no_len);
|
|
ND_PRINT(" PHONE_NO_LEN(%u)", GET_BE_U_2(ptr->phone_no_len));
|
|
ND_TCHECK_2(ptr->reserved1);
|
|
PRINT_RESERVED_IF_NOT_ZERO_2(ptr->reserved1);
|
|
ND_TCHECK_SIZE(&ptr->phone_no);
|
|
ND_PRINT(" PHONE_NO(%.64s)", ptr->phone_no);
|
|
ND_TCHECK_SIZE(&ptr->subaddr);
|
|
pptp_subaddr_print(ndo, &ptr->subaddr[0]);
|
|
|
|
return;
|
|
|
|
trunc:
|
|
nd_print_trunc(ndo);
|
|
}
|
|
|
|
static void
|
|
pptp_ocrp_print(netdissect_options *ndo,
|
|
const u_char *dat)
|
|
{
|
|
const struct pptp_msg_ocrp *ptr = (const struct pptp_msg_ocrp *)dat;
|
|
|
|
ND_TCHECK_2(ptr->call_id);
|
|
pptp_call_id_print(ndo, &ptr->call_id);
|
|
ND_TCHECK_2(ptr->peer_call_id);
|
|
pptp_peer_call_id_print(ndo, &ptr->peer_call_id);
|
|
ND_TCHECK_1(ptr->result_code);
|
|
pptp_result_code_print(ndo, &ptr->result_code, PPTP_CTRL_MSG_TYPE_OCRP);
|
|
ND_TCHECK_1(ptr->err_code);
|
|
pptp_err_code_print(ndo, &ptr->err_code);
|
|
ND_TCHECK_2(ptr->cause_code);
|
|
pptp_cause_code_print(ndo, &ptr->cause_code);
|
|
ND_TCHECK_4(ptr->conn_speed);
|
|
pptp_conn_speed_print(ndo, &ptr->conn_speed);
|
|
ND_TCHECK_2(ptr->recv_winsiz);
|
|
pptp_recv_winsiz_print(ndo, &ptr->recv_winsiz);
|
|
ND_TCHECK_2(ptr->pkt_proc_delay);
|
|
pptp_pkt_proc_delay_print(ndo, &ptr->pkt_proc_delay);
|
|
ND_TCHECK_4(ptr->phy_chan_id);
|
|
pptp_phy_chan_id_print(ndo, &ptr->phy_chan_id);
|
|
|
|
return;
|
|
|
|
trunc:
|
|
nd_print_trunc(ndo);
|
|
}
|
|
|
|
static void
|
|
pptp_icrq_print(netdissect_options *ndo,
|
|
const u_char *dat)
|
|
{
|
|
const struct pptp_msg_icrq *ptr = (const struct pptp_msg_icrq *)dat;
|
|
|
|
ND_TCHECK_2(ptr->call_id);
|
|
pptp_call_id_print(ndo, &ptr->call_id);
|
|
ND_TCHECK_2(ptr->call_ser);
|
|
pptp_call_ser_print(ndo, &ptr->call_ser);
|
|
ND_TCHECK_4(ptr->bearer_type);
|
|
pptp_bearer_type_print(ndo, &ptr->bearer_type);
|
|
ND_TCHECK_4(ptr->phy_chan_id);
|
|
pptp_phy_chan_id_print(ndo, &ptr->phy_chan_id);
|
|
ND_TCHECK_2(ptr->dialed_no_len);
|
|
ND_PRINT(" DIALED_NO_LEN(%u)", GET_BE_U_2(ptr->dialed_no_len));
|
|
ND_TCHECK_2(ptr->dialing_no_len);
|
|
ND_PRINT(" DIALING_NO_LEN(%u)", GET_BE_U_2(ptr->dialing_no_len));
|
|
ND_TCHECK_SIZE(&ptr->dialed_no);
|
|
ND_PRINT(" DIALED_NO(%.64s)", ptr->dialed_no);
|
|
ND_TCHECK_SIZE(&ptr->dialing_no);
|
|
ND_PRINT(" DIALING_NO(%.64s)", ptr->dialing_no);
|
|
ND_TCHECK_SIZE(&ptr->subaddr);
|
|
pptp_subaddr_print(ndo, &ptr->subaddr[0]);
|
|
|
|
return;
|
|
|
|
trunc:
|
|
nd_print_trunc(ndo);
|
|
}
|
|
|
|
static void
|
|
pptp_icrp_print(netdissect_options *ndo,
|
|
const u_char *dat)
|
|
{
|
|
const struct pptp_msg_icrp *ptr = (const struct pptp_msg_icrp *)dat;
|
|
|
|
ND_TCHECK_2(ptr->call_id);
|
|
pptp_call_id_print(ndo, &ptr->call_id);
|
|
ND_TCHECK_2(ptr->peer_call_id);
|
|
pptp_peer_call_id_print(ndo, &ptr->peer_call_id);
|
|
ND_TCHECK_1(ptr->result_code);
|
|
pptp_result_code_print(ndo, &ptr->result_code, PPTP_CTRL_MSG_TYPE_ICRP);
|
|
ND_TCHECK_1(ptr->err_code);
|
|
pptp_err_code_print(ndo, &ptr->err_code);
|
|
ND_TCHECK_2(ptr->recv_winsiz);
|
|
pptp_recv_winsiz_print(ndo, &ptr->recv_winsiz);
|
|
ND_TCHECK_2(ptr->pkt_proc_delay);
|
|
pptp_pkt_proc_delay_print(ndo, &ptr->pkt_proc_delay);
|
|
ND_TCHECK_2(ptr->reserved1);
|
|
PRINT_RESERVED_IF_NOT_ZERO_2(ptr->reserved1);
|
|
|
|
return;
|
|
|
|
trunc:
|
|
nd_print_trunc(ndo);
|
|
}
|
|
|
|
static void
|
|
pptp_iccn_print(netdissect_options *ndo,
|
|
const u_char *dat)
|
|
{
|
|
const struct pptp_msg_iccn *ptr = (const struct pptp_msg_iccn *)dat;
|
|
|
|
ND_TCHECK_2(ptr->peer_call_id);
|
|
pptp_peer_call_id_print(ndo, &ptr->peer_call_id);
|
|
ND_TCHECK_2(ptr->reserved1);
|
|
PRINT_RESERVED_IF_NOT_ZERO_2(ptr->reserved1);
|
|
ND_TCHECK_4(ptr->conn_speed);
|
|
pptp_conn_speed_print(ndo, &ptr->conn_speed);
|
|
ND_TCHECK_2(ptr->recv_winsiz);
|
|
pptp_recv_winsiz_print(ndo, &ptr->recv_winsiz);
|
|
ND_TCHECK_2(ptr->pkt_proc_delay);
|
|
pptp_pkt_proc_delay_print(ndo, &ptr->pkt_proc_delay);
|
|
ND_TCHECK_4(ptr->framing_type);
|
|
pptp_framing_type_print(ndo, &ptr->framing_type);
|
|
|
|
return;
|
|
|
|
trunc:
|
|
nd_print_trunc(ndo);
|
|
}
|
|
|
|
static void
|
|
pptp_ccrq_print(netdissect_options *ndo,
|
|
const u_char *dat)
|
|
{
|
|
const struct pptp_msg_ccrq *ptr = (const struct pptp_msg_ccrq *)dat;
|
|
|
|
ND_TCHECK_2(ptr->call_id);
|
|
pptp_call_id_print(ndo, &ptr->call_id);
|
|
ND_TCHECK_2(ptr->reserved1);
|
|
PRINT_RESERVED_IF_NOT_ZERO_2(ptr->reserved1);
|
|
|
|
return;
|
|
|
|
trunc:
|
|
nd_print_trunc(ndo);
|
|
}
|
|
|
|
static void
|
|
pptp_cdn_print(netdissect_options *ndo,
|
|
const u_char *dat)
|
|
{
|
|
const struct pptp_msg_cdn *ptr = (const struct pptp_msg_cdn *)dat;
|
|
|
|
ND_TCHECK_2(ptr->call_id);
|
|
pptp_call_id_print(ndo, &ptr->call_id);
|
|
ND_TCHECK_1(ptr->result_code);
|
|
pptp_result_code_print(ndo, &ptr->result_code, PPTP_CTRL_MSG_TYPE_CDN);
|
|
ND_TCHECK_1(ptr->err_code);
|
|
pptp_err_code_print(ndo, &ptr->err_code);
|
|
ND_TCHECK_2(ptr->cause_code);
|
|
pptp_cause_code_print(ndo, &ptr->cause_code);
|
|
ND_TCHECK_2(ptr->reserved1);
|
|
PRINT_RESERVED_IF_NOT_ZERO_2(ptr->reserved1);
|
|
ND_TCHECK_SIZE(&ptr->call_stats);
|
|
ND_PRINT(" CALL_STATS(%.128s)", ptr->call_stats);
|
|
|
|
return;
|
|
|
|
trunc:
|
|
nd_print_trunc(ndo);
|
|
}
|
|
|
|
static void
|
|
pptp_wen_print(netdissect_options *ndo,
|
|
const u_char *dat)
|
|
{
|
|
const struct pptp_msg_wen *ptr = (const struct pptp_msg_wen *)dat;
|
|
|
|
ND_TCHECK_2(ptr->peer_call_id);
|
|
pptp_peer_call_id_print(ndo, &ptr->peer_call_id);
|
|
ND_TCHECK_2(ptr->reserved1);
|
|
PRINT_RESERVED_IF_NOT_ZERO_2(ptr->reserved1);
|
|
ND_TCHECK_4(ptr->crc_err);
|
|
ND_PRINT(" CRC_ERR(%u)", GET_BE_U_4(ptr->crc_err));
|
|
ND_TCHECK_4(ptr->framing_err);
|
|
ND_PRINT(" FRAMING_ERR(%u)", GET_BE_U_4(ptr->framing_err));
|
|
ND_TCHECK_4(ptr->hardware_overrun);
|
|
ND_PRINT(" HARDWARE_OVERRUN(%u)", GET_BE_U_4(ptr->hardware_overrun));
|
|
ND_TCHECK_4(ptr->buffer_overrun);
|
|
ND_PRINT(" BUFFER_OVERRUN(%u)", GET_BE_U_4(ptr->buffer_overrun));
|
|
ND_TCHECK_4(ptr->timeout_err);
|
|
ND_PRINT(" TIMEOUT_ERR(%u)", GET_BE_U_4(ptr->timeout_err));
|
|
ND_TCHECK_4(ptr->align_err);
|
|
ND_PRINT(" ALIGN_ERR(%u)", GET_BE_U_4(ptr->align_err));
|
|
|
|
return;
|
|
|
|
trunc:
|
|
nd_print_trunc(ndo);
|
|
}
|
|
|
|
static void
|
|
pptp_sli_print(netdissect_options *ndo,
|
|
const u_char *dat)
|
|
{
|
|
const struct pptp_msg_sli *ptr = (const struct pptp_msg_sli *)dat;
|
|
|
|
ND_TCHECK_2(ptr->peer_call_id);
|
|
pptp_peer_call_id_print(ndo, &ptr->peer_call_id);
|
|
ND_TCHECK_2(ptr->reserved1);
|
|
PRINT_RESERVED_IF_NOT_ZERO_2(ptr->reserved1);
|
|
ND_TCHECK_4(ptr->send_accm);
|
|
ND_PRINT(" SEND_ACCM(0x%08x)", GET_BE_U_4(ptr->send_accm));
|
|
ND_TCHECK_4(ptr->recv_accm);
|
|
ND_PRINT(" RECV_ACCM(0x%08x)", GET_BE_U_4(ptr->recv_accm));
|
|
|
|
return;
|
|
|
|
trunc:
|
|
nd_print_trunc(ndo);
|
|
}
|
|
|
|
void
|
|
pptp_print(netdissect_options *ndo,
|
|
const u_char *dat)
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{
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const struct pptp_hdr *hdr;
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uint32_t mc;
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uint16_t ctrl_msg_type;
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ndo->ndo_protocol = "pptp";
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ND_PRINT(": pptp");
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hdr = (const struct pptp_hdr *)dat;
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ND_TCHECK_2(hdr->length);
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if (ndo->ndo_vflag) {
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ND_PRINT(" Length=%u", GET_BE_U_2(hdr->length));
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}
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ND_TCHECK_2(hdr->msg_type);
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if (ndo->ndo_vflag) {
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switch(GET_BE_U_2(hdr->msg_type)) {
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case PPTP_MSG_TYPE_CTRL:
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ND_PRINT(" CTRL-MSG");
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break;
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case PPTP_MSG_TYPE_MGMT:
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ND_PRINT(" MGMT-MSG");
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break;
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default:
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ND_PRINT(" UNKNOWN-MSG-TYPE");
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break;
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}
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}
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|
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ND_TCHECK_4(hdr->magic_cookie);
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mc = GET_BE_U_4(hdr->magic_cookie);
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if (mc != PPTP_MAGIC_COOKIE) {
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ND_PRINT(" UNEXPECTED Magic-Cookie!!(%08x)", mc);
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}
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if (ndo->ndo_vflag || mc != PPTP_MAGIC_COOKIE) {
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ND_PRINT(" Magic-Cookie=%08x", mc);
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}
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ND_TCHECK_2(hdr->ctrl_msg_type);
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ctrl_msg_type = GET_BE_U_2(hdr->ctrl_msg_type);
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if (ctrl_msg_type < PPTP_MAX_MSGTYPE_INDEX) {
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ND_PRINT(" CTRL_MSGTYPE=%s",
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pptp_message_type_string[ctrl_msg_type]);
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} else {
|
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ND_PRINT(" UNKNOWN_CTRL_MSGTYPE(%u)", ctrl_msg_type);
|
|
}
|
|
ND_TCHECK_2(hdr->reserved0);
|
|
PRINT_RESERVED_IF_NOT_ZERO_2(hdr->reserved0);
|
|
|
|
dat += 12;
|
|
|
|
switch(ctrl_msg_type) {
|
|
case PPTP_CTRL_MSG_TYPE_SCCRQ:
|
|
pptp_sccrq_print(ndo, dat);
|
|
break;
|
|
case PPTP_CTRL_MSG_TYPE_SCCRP:
|
|
pptp_sccrp_print(ndo, dat);
|
|
break;
|
|
case PPTP_CTRL_MSG_TYPE_StopCCRQ:
|
|
pptp_stopccrq_print(ndo, dat);
|
|
break;
|
|
case PPTP_CTRL_MSG_TYPE_StopCCRP:
|
|
pptp_stopccrp_print(ndo, dat);
|
|
break;
|
|
case PPTP_CTRL_MSG_TYPE_ECHORQ:
|
|
pptp_echorq_print(ndo, dat);
|
|
break;
|
|
case PPTP_CTRL_MSG_TYPE_ECHORP:
|
|
pptp_echorp_print(ndo, dat);
|
|
break;
|
|
case PPTP_CTRL_MSG_TYPE_OCRQ:
|
|
pptp_ocrq_print(ndo, dat);
|
|
break;
|
|
case PPTP_CTRL_MSG_TYPE_OCRP:
|
|
pptp_ocrp_print(ndo, dat);
|
|
break;
|
|
case PPTP_CTRL_MSG_TYPE_ICRQ:
|
|
pptp_icrq_print(ndo, dat);
|
|
break;
|
|
case PPTP_CTRL_MSG_TYPE_ICRP:
|
|
pptp_icrp_print(ndo, dat);
|
|
break;
|
|
case PPTP_CTRL_MSG_TYPE_ICCN:
|
|
pptp_iccn_print(ndo, dat);
|
|
break;
|
|
case PPTP_CTRL_MSG_TYPE_CCRQ:
|
|
pptp_ccrq_print(ndo, dat);
|
|
break;
|
|
case PPTP_CTRL_MSG_TYPE_CDN:
|
|
pptp_cdn_print(ndo, dat);
|
|
break;
|
|
case PPTP_CTRL_MSG_TYPE_WEN:
|
|
pptp_wen_print(ndo, dat);
|
|
break;
|
|
case PPTP_CTRL_MSG_TYPE_SLI:
|
|
pptp_sli_print(ndo, dat);
|
|
break;
|
|
default:
|
|
/* do nothing */
|
|
break;
|
|
}
|
|
|
|
return;
|
|
|
|
trunc:
|
|
nd_print_trunc(ndo);
|
|
}
|