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Diffstat (limited to 'contrib/tcpdump/print-pptp.c')
| -rw-r--r-- | contrib/tcpdump/print-pptp.c | 1060 |
1 files changed, 1060 insertions, 0 deletions
diff --git a/contrib/tcpdump/print-pptp.c b/contrib/tcpdump/print-pptp.c new file mode 100644 index 0000000..2fbba62 --- /dev/null +++ b/contrib/tcpdump/print-pptp.c @@ -0,0 +1,1060 @@ +/* + * 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[] _U_ = + "@(#) $Header: /tcpdump/master/tcpdump/print-pptp.c,v 1.12 2006-06-23 02:03:09 hannes Exp $"; +#endif + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include <tcpdump-stdinc.h> + +#include <stdio.h> + +#include "interface.h" +#include "extract.h" + +static char tstr[] = " [|pptp]"; + +#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 const 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 (EXTRACT_32BITS(bearer_cap) & PPTP_BEARER_CAP_DIGITAL_MASK) { + printf("D"); + } + if (EXTRACT_32BITS(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 (EXTRACT_32BITS(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)", EXTRACT_16BITS(call_id)); +} + +static void +pptp_call_ser_print(const u_int16_t *call_ser) +{ + printf(" CALL_SER_NUM(%u)", EXTRACT_16BITS(call_ser)); +} + +static void +pptp_cause_code_print(const u_int16_t *cause_code) +{ + printf(" CAUSE_CODE(%u)", EXTRACT_16BITS(cause_code)); +} + +static void +pptp_conn_speed_print(const u_int32_t *conn_speed) +{ + printf(" CONN_SPEED(%u)", EXTRACT_32BITS(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)", EXTRACT_16BITS(firm_rev)); +} + +static void +pptp_framing_cap_print(const u_int32_t *framing_cap) +{ + printf(" FRAME_CAP("); + if (EXTRACT_32BITS(framing_cap) & PPTP_FRAMING_CAP_ASYNC_MASK) { + printf("A"); /* Async */ + } + if (EXTRACT_32BITS(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 (EXTRACT_32BITS(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(%u)", EXTRACT_32BITS(id)); +} + +static void +pptp_max_channel_print(const u_int16_t *max_channel) +{ + printf(" MAX_CHAN(%u)", EXTRACT_16BITS(max_channel)); +} + +static void +pptp_peer_call_id_print(const u_int16_t *peer_call_id) +{ + printf(" PEER_CALL_ID(%u)", EXTRACT_16BITS(peer_call_id)); +} + +static void +pptp_phy_chan_id_print(const u_int32_t *phy_chan_id) +{ + printf(" PHY_CHAN_ID(%u)", EXTRACT_32BITS(phy_chan_id)); +} + +static void +pptp_pkt_proc_delay_print(const u_int16_t *pkt_proc_delay) +{ + printf(" PROC_DELAY(%u)", EXTRACT_16BITS(pkt_proc_delay)); +} + +static void +pptp_proto_ver_print(const u_int16_t *proto_ver) +{ + printf(" PROTO_VER(%u.%u)", /* Version.Revision */ + EXTRACT_16BITS(proto_ver) >> 8, + EXTRACT_16BITS(proto_ver) & 0xff); +} + +static void +pptp_recv_winsiz_print(const u_int16_t *recv_winsiz) +{ + printf(" RECV_WIN(%u)", EXTRACT_16BITS(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(%u)", EXTRACT_32BITS(&ptr->min_bps)); + TCHECK(ptr->max_bps); + printf(" MAX_BPS(%u)", EXTRACT_32BITS(&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)", EXTRACT_16BITS(&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)", EXTRACT_16BITS(&ptr->dialed_no_len)); + TCHECK(ptr->dialing_no_len); + printf(" DIALING_NO_LEN(%u)", EXTRACT_16BITS(&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(%u)", EXTRACT_32BITS(&ptr->crc_err)); + TCHECK(ptr->framing_err); + printf(" FRAMING_ERR(%u)", EXTRACT_32BITS(&ptr->framing_err)); + TCHECK(ptr->hardware_overrun); + printf(" HARDWARE_OVERRUN(%u)", EXTRACT_32BITS(&ptr->hardware_overrun)); + TCHECK(ptr->buffer_overrun); + printf(" BUFFER_OVERRUN(%u)", EXTRACT_32BITS(&ptr->buffer_overrun)); + TCHECK(ptr->timeout_err); + printf(" TIMEOUT_ERR(%u)", EXTRACT_32BITS(&ptr->timeout_err)); + TCHECK(ptr->align_err); + printf(" ALIGN_ERR(%u)", EXTRACT_32BITS(&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%08x)", EXTRACT_32BITS(&ptr->send_accm)); + TCHECK(ptr->recv_accm); + printf(" RECV_ACCM(0x%08x)", EXTRACT_32BITS(&ptr->recv_accm)); + + return; + +trunc: + printf("%s", tstr); +} + +void +pptp_print(const u_char *dat) +{ + 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", EXTRACT_16BITS(&hdr->length)); + } + TCHECK(hdr->msg_type); + if (vflag) { + switch(EXTRACT_16BITS(&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 = EXTRACT_32BITS(&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 = EXTRACT_16BITS(&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); +} |
