/* * 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) */ #define NETDISSECT_REWORKED #ifdef HAVE_CONFIG_H #include "config.h" #endif #include #include "interface.h" #include "extract.h" static const 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 ND_TCHECK because they are already checked in the caller of these functions. */ static void pptp_bearer_cap_print(netdissect_options *ndo, const u_int32_t *bearer_cap) { ND_PRINT((ndo, " BEARER_CAP(")); if (EXTRACT_32BITS(bearer_cap) & PPTP_BEARER_CAP_DIGITAL_MASK) { ND_PRINT((ndo, "D")); } if (EXTRACT_32BITS(bearer_cap) & PPTP_BEARER_CAP_ANALOG_MASK) { ND_PRINT((ndo, "A")); } ND_PRINT((ndo, ")")); } static void pptp_bearer_type_print(netdissect_options *ndo, const u_int32_t *bearer_type) { ND_PRINT((ndo, " BEARER_TYPE(")); switch (EXTRACT_32BITS(bearer_type)) { case 1: ND_PRINT((ndo, "A")); /* Analog */ break; case 2: ND_PRINT((ndo, "D")); /* Digital */ break; case 3: ND_PRINT((ndo, "Any")); break; default: ND_PRINT((ndo, "?")); break; } ND_PRINT((ndo, ")")); } static void pptp_call_id_print(netdissect_options *ndo, const u_int16_t *call_id) { ND_PRINT((ndo, " CALL_ID(%u)", EXTRACT_16BITS(call_id))); } static void pptp_call_ser_print(netdissect_options *ndo, const u_int16_t *call_ser) { ND_PRINT((ndo, " CALL_SER_NUM(%u)", EXTRACT_16BITS(call_ser))); } static void pptp_cause_code_print(netdissect_options *ndo, const u_int16_t *cause_code) { ND_PRINT((ndo, " CAUSE_CODE(%u)", EXTRACT_16BITS(cause_code))); } static void pptp_conn_speed_print(netdissect_options *ndo, const u_int32_t *conn_speed) { ND_PRINT((ndo, " CONN_SPEED(%u)", EXTRACT_32BITS(conn_speed))); } static void pptp_err_code_print(netdissect_options *ndo, const u_int8_t *err_code) { ND_PRINT((ndo, " ERR_CODE(%u", *err_code)); if (ndo->ndo_vflag) { switch (*err_code) { case 0: ND_PRINT((ndo, ":None")); break; case 1: ND_PRINT((ndo, ":Not-Connected")); break; case 2: ND_PRINT((ndo, ":Bad-Format")); break; case 3: ND_PRINT((ndo, ":Bad-Valude")); break; case 4: ND_PRINT((ndo, ":No-Resource")); break; case 5: ND_PRINT((ndo, ":Bad-Call-ID")); break; case 6: ND_PRINT((ndo, ":PAC-Error")); break; default: ND_PRINT((ndo, ":?")); break; } } ND_PRINT((ndo, ")")); } static void pptp_firm_rev_print(netdissect_options *ndo, const u_int16_t *firm_rev) { ND_PRINT((ndo, " FIRM_REV(%u)", EXTRACT_16BITS(firm_rev))); } static void pptp_framing_cap_print(netdissect_options *ndo, const u_int32_t *framing_cap) { ND_PRINT((ndo, " FRAME_CAP(")); if (EXTRACT_32BITS(framing_cap) & PPTP_FRAMING_CAP_ASYNC_MASK) { ND_PRINT((ndo, "A")); /* Async */ } if (EXTRACT_32BITS(framing_cap) & PPTP_FRAMING_CAP_SYNC_MASK) { ND_PRINT((ndo, "S")); /* Sync */ } ND_PRINT((ndo, ")")); } static void pptp_framing_type_print(netdissect_options *ndo, const u_int32_t *framing_type) { ND_PRINT((ndo, " FRAME_TYPE(")); switch (EXTRACT_32BITS(framing_type)) { case 1: ND_PRINT((ndo, "A")); /* Async */ break; case 2: ND_PRINT((ndo, "S")); /* Sync */ break; case 3: ND_PRINT((ndo, "E")); /* Either */ break; default: ND_PRINT((ndo, "?")); break; } ND_PRINT((ndo, ")")); } static void pptp_hostname_print(netdissect_options *ndo, const u_char *hostname) { ND_PRINT((ndo, " HOSTNAME(%.64s)", hostname)); } static void pptp_id_print(netdissect_options *ndo, const u_int32_t *id) { ND_PRINT((ndo, " ID(%u)", EXTRACT_32BITS(id))); } static void pptp_max_channel_print(netdissect_options *ndo, const u_int16_t *max_channel) { ND_PRINT((ndo, " MAX_CHAN(%u)", EXTRACT_16BITS(max_channel))); } static void pptp_peer_call_id_print(netdissect_options *ndo, const u_int16_t *peer_call_id) { ND_PRINT((ndo, " PEER_CALL_ID(%u)", EXTRACT_16BITS(peer_call_id))); } static void pptp_phy_chan_id_print(netdissect_options *ndo, const u_int32_t *phy_chan_id) { ND_PRINT((ndo, " PHY_CHAN_ID(%u)", EXTRACT_32BITS(phy_chan_id))); } static void pptp_pkt_proc_delay_print(netdissect_options *ndo, const u_int16_t *pkt_proc_delay) { ND_PRINT((ndo, " PROC_DELAY(%u)", EXTRACT_16BITS(pkt_proc_delay))); } static void pptp_proto_ver_print(netdissect_options *ndo, const u_int16_t *proto_ver) { ND_PRINT((ndo, " PROTO_VER(%u.%u)", /* Version.Revision */ EXTRACT_16BITS(proto_ver) >> 8, EXTRACT_16BITS(proto_ver) & 0xff)); } static void pptp_recv_winsiz_print(netdissect_options *ndo, const u_int16_t *recv_winsiz) { ND_PRINT((ndo, " RECV_WIN(%u)", EXTRACT_16BITS(recv_winsiz))); } static void pptp_result_code_print(netdissect_options *ndo, const u_int8_t *result_code, int ctrl_msg_type) { ND_PRINT((ndo, " RESULT_CODE(%u", *result_code)); if (ndo->ndo_vflag) { switch (ctrl_msg_type) { case PPTP_CTRL_MSG_TYPE_SCCRP: switch (*result_code) { case 1: ND_PRINT((ndo, ":Successful channel establishment")); break; case 2: ND_PRINT((ndo, ":General error")); break; case 3: ND_PRINT((ndo, ":Command channel already exists")); break; case 4: ND_PRINT((ndo, ":Requester is not authorized to establish a command channel")); break; case 5: ND_PRINT((ndo, ":The protocol version of the requester is not supported")); break; default: ND_PRINT((ndo, ":?")); break; } break; case PPTP_CTRL_MSG_TYPE_StopCCRP: case PPTP_CTRL_MSG_TYPE_ECHORP: switch (*result_code) { case 1: ND_PRINT((ndo, ":OK")); break; case 2: ND_PRINT((ndo, ":General Error")); break; default: ND_PRINT((ndo, ":?")); break; } break; case PPTP_CTRL_MSG_TYPE_OCRP: switch (*result_code) { case 1: ND_PRINT((ndo, ":Connected")); break; case 2: ND_PRINT((ndo, ":General Error")); break; case 3: ND_PRINT((ndo, ":No Carrier")); break; case 4: ND_PRINT((ndo, ":Busy")); break; case 5: ND_PRINT((ndo, ":No Dial Tone")); break; case 6: ND_PRINT((ndo, ":Time-out")); break; case 7: ND_PRINT((ndo, ":Do Not Accept")); break; default: ND_PRINT((ndo, ":?")); break; } break; case PPTP_CTRL_MSG_TYPE_ICRP: switch (*result_code) { case 1: ND_PRINT((ndo, ":Connect")); break; case 2: ND_PRINT((ndo, ":General Error")); break; case 3: ND_PRINT((ndo, ":Do Not Accept")); break; default: ND_PRINT((ndo, ":?")); break; } break; case PPTP_CTRL_MSG_TYPE_CDN: switch (*result_code) { case 1: ND_PRINT((ndo, ":Lost Carrier")); break; case 2: ND_PRINT((ndo, ":General Error")); break; case 3: ND_PRINT((ndo, ":Admin Shutdown")); break; case 4: ND_PRINT((ndo, ":Request")); break; default: ND_PRINT((ndo, ":?")); break; } break; default: /* assertion error */ break; } } ND_PRINT((ndo, ")")); } static void pptp_subaddr_print(netdissect_options *ndo, const u_char *subaddr) { ND_PRINT((ndo, " SUB_ADDR(%.64s)", subaddr)); } static void pptp_vendor_print(netdissect_options *ndo, const u_char *vendor) { ND_PRINT((ndo, " VENDOR(%.64s)", vendor)); } /************************************/ /* PPTP message print out functions */ /************************************/ static void pptp_sccrq_print(netdissect_options *ndo, const u_char *dat) { struct pptp_msg_sccrq *ptr = (struct pptp_msg_sccrq *)dat; ND_TCHECK(ptr->proto_ver); pptp_proto_ver_print(ndo, &ptr->proto_ver); ND_TCHECK(ptr->reserved1); ND_TCHECK(ptr->framing_cap); pptp_framing_cap_print(ndo, &ptr->framing_cap); ND_TCHECK(ptr->bearer_cap); pptp_bearer_cap_print(ndo, &ptr->bearer_cap); ND_TCHECK(ptr->max_channel); pptp_max_channel_print(ndo, &ptr->max_channel); ND_TCHECK(ptr->firm_rev); pptp_firm_rev_print(ndo, &ptr->firm_rev); ND_TCHECK(ptr->hostname); pptp_hostname_print(ndo, &ptr->hostname[0]); ND_TCHECK(ptr->vendor); pptp_vendor_print(ndo, &ptr->vendor[0]); return; trunc: ND_PRINT((ndo, "%s", tstr)); } static void pptp_sccrp_print(netdissect_options *ndo, const u_char *dat) { struct pptp_msg_sccrp *ptr = (struct pptp_msg_sccrp *)dat; ND_TCHECK(ptr->proto_ver); pptp_proto_ver_print(ndo, &ptr->proto_ver); ND_TCHECK(ptr->result_code); pptp_result_code_print(ndo, &ptr->result_code, PPTP_CTRL_MSG_TYPE_SCCRP); ND_TCHECK(ptr->err_code); pptp_err_code_print(ndo, &ptr->err_code); ND_TCHECK(ptr->framing_cap); pptp_framing_cap_print(ndo, &ptr->framing_cap); ND_TCHECK(ptr->bearer_cap); pptp_bearer_cap_print(ndo, &ptr->bearer_cap); ND_TCHECK(ptr->max_channel); pptp_max_channel_print(ndo, &ptr->max_channel); ND_TCHECK(ptr->firm_rev); pptp_firm_rev_print(ndo, &ptr->firm_rev); ND_TCHECK(ptr->hostname); pptp_hostname_print(ndo, &ptr->hostname[0]); ND_TCHECK(ptr->vendor); pptp_vendor_print(ndo, &ptr->vendor[0]); return; trunc: ND_PRINT((ndo, "%s", tstr)); } static void pptp_stopccrq_print(netdissect_options *ndo, const u_char *dat) { struct pptp_msg_stopccrq *ptr = (struct pptp_msg_stopccrq *)dat; ND_TCHECK(ptr->reason); ND_PRINT((ndo, " REASON(%u", ptr->reason)); if (ndo->ndo_vflag) { switch (ptr->reason) { case 1: ND_PRINT((ndo, ":None")); break; case 2: ND_PRINT((ndo, ":Stop-Protocol")); break; case 3: ND_PRINT((ndo, ":Stop-Local-Shutdown")); break; default: ND_PRINT((ndo, ":?")); break; } } ND_PRINT((ndo, ")")); ND_TCHECK(ptr->reserved1); ND_TCHECK(ptr->reserved2); return; trunc: ND_PRINT((ndo, "%s", tstr)); } static void pptp_stopccrp_print(netdissect_options *ndo, const u_char *dat) { struct pptp_msg_stopccrp *ptr = (struct pptp_msg_stopccrp *)dat; ND_TCHECK(ptr->result_code); pptp_result_code_print(ndo, &ptr->result_code, PPTP_CTRL_MSG_TYPE_StopCCRP); ND_TCHECK(ptr->err_code); pptp_err_code_print(ndo, &ptr->err_code); ND_TCHECK(ptr->reserved1); return; trunc: ND_PRINT((ndo, "%s", tstr)); } static void pptp_echorq_print(netdissect_options *ndo, const u_char *dat) { struct pptp_msg_echorq *ptr = (struct pptp_msg_echorq *)dat; ND_TCHECK(ptr->id); pptp_id_print(ndo, &ptr->id); return; trunc: ND_PRINT((ndo, "%s", tstr)); } static void pptp_echorp_print(netdissect_options *ndo, const u_char *dat) { struct pptp_msg_echorp *ptr = (struct pptp_msg_echorp *)dat; ND_TCHECK(ptr->id); pptp_id_print(ndo, &ptr->id); ND_TCHECK(ptr->result_code); pptp_result_code_print(ndo, &ptr->result_code, PPTP_CTRL_MSG_TYPE_ECHORP); ND_TCHECK(ptr->err_code); pptp_err_code_print(ndo, &ptr->err_code); ND_TCHECK(ptr->reserved1); return; trunc: ND_PRINT((ndo, "%s", tstr)); } static void pptp_ocrq_print(netdissect_options *ndo, const u_char *dat) { struct pptp_msg_ocrq *ptr = (struct pptp_msg_ocrq *)dat; ND_TCHECK(ptr->call_id); pptp_call_id_print(ndo, &ptr->call_id); ND_TCHECK(ptr->call_ser); pptp_call_ser_print(ndo, &ptr->call_ser); ND_TCHECK(ptr->min_bps); ND_PRINT((ndo, " MIN_BPS(%u)", EXTRACT_32BITS(&ptr->min_bps))); ND_TCHECK(ptr->max_bps); ND_PRINT((ndo, " MAX_BPS(%u)", EXTRACT_32BITS(&ptr->max_bps))); ND_TCHECK(ptr->bearer_type); pptp_bearer_type_print(ndo, &ptr->bearer_type); ND_TCHECK(ptr->framing_type); pptp_framing_type_print(ndo, &ptr->framing_type); ND_TCHECK(ptr->recv_winsiz); pptp_recv_winsiz_print(ndo, &ptr->recv_winsiz); ND_TCHECK(ptr->pkt_proc_delay); pptp_pkt_proc_delay_print(ndo, &ptr->pkt_proc_delay); ND_TCHECK(ptr->phone_no_len); ND_PRINT((ndo, " PHONE_NO_LEN(%u)", EXTRACT_16BITS(&ptr->phone_no_len))); ND_TCHECK(ptr->reserved1); ND_TCHECK(ptr->phone_no); ND_PRINT((ndo, " PHONE_NO(%.64s)", ptr->phone_no)); ND_TCHECK(ptr->subaddr); pptp_subaddr_print(ndo, &ptr->subaddr[0]); return; trunc: ND_PRINT((ndo, "%s", tstr)); } static void pptp_ocrp_print(netdissect_options *ndo, const u_char *dat) { struct pptp_msg_ocrp *ptr = (struct pptp_msg_ocrp *)dat; ND_TCHECK(ptr->call_id); pptp_call_id_print(ndo, &ptr->call_id); ND_TCHECK(ptr->peer_call_id); pptp_peer_call_id_print(ndo, &ptr->peer_call_id); ND_TCHECK(ptr->result_code); pptp_result_code_print(ndo, &ptr->result_code, PPTP_CTRL_MSG_TYPE_OCRP); ND_TCHECK(ptr->err_code); pptp_err_code_print(ndo, &ptr->err_code); ND_TCHECK(ptr->cause_code); pptp_cause_code_print(ndo, &ptr->cause_code); ND_TCHECK(ptr->conn_speed); pptp_conn_speed_print(ndo, &ptr->conn_speed); ND_TCHECK(ptr->recv_winsiz); pptp_recv_winsiz_print(ndo, &ptr->recv_winsiz); ND_TCHECK(ptr->pkt_proc_delay); pptp_pkt_proc_delay_print(ndo, &ptr->pkt_proc_delay); ND_TCHECK(ptr->phy_chan_id); pptp_phy_chan_id_print(ndo, &ptr->phy_chan_id); return; trunc: ND_PRINT((ndo, "%s", tstr)); } static void pptp_icrq_print(netdissect_options *ndo, const u_char *dat) { struct pptp_msg_icrq *ptr = (struct pptp_msg_icrq *)dat; ND_TCHECK(ptr->call_id); pptp_call_id_print(ndo, &ptr->call_id); ND_TCHECK(ptr->call_ser); pptp_call_ser_print(ndo, &ptr->call_ser); ND_TCHECK(ptr->bearer_type); pptp_bearer_type_print(ndo, &ptr->bearer_type); ND_TCHECK(ptr->phy_chan_id); pptp_phy_chan_id_print(ndo, &ptr->phy_chan_id); ND_TCHECK(ptr->dialed_no_len); ND_PRINT((ndo, " DIALED_NO_LEN(%u)", EXTRACT_16BITS(&ptr->dialed_no_len))); ND_TCHECK(ptr->dialing_no_len); ND_PRINT((ndo, " DIALING_NO_LEN(%u)", EXTRACT_16BITS(&ptr->dialing_no_len))); ND_TCHECK(ptr->dialed_no); ND_PRINT((ndo, " DIALED_NO(%.64s)", ptr->dialed_no)); ND_TCHECK(ptr->dialing_no); ND_PRINT((ndo, " DIALING_NO(%.64s)", ptr->dialing_no)); ND_TCHECK(ptr->subaddr); pptp_subaddr_print(ndo, &ptr->subaddr[0]); return; trunc: ND_PRINT((ndo, "%s", tstr)); } static void pptp_icrp_print(netdissect_options *ndo, const u_char *dat) { struct pptp_msg_icrp *ptr = (struct pptp_msg_icrp *)dat; ND_TCHECK(ptr->call_id); pptp_call_id_print(ndo, &ptr->call_id); ND_TCHECK(ptr->peer_call_id); pptp_peer_call_id_print(ndo, &ptr->peer_call_id); ND_TCHECK(ptr->result_code); pptp_result_code_print(ndo, &ptr->result_code, PPTP_CTRL_MSG_TYPE_ICRP); ND_TCHECK(ptr->err_code); pptp_err_code_print(ndo, &ptr->err_code); ND_TCHECK(ptr->recv_winsiz); pptp_recv_winsiz_print(ndo, &ptr->recv_winsiz); ND_TCHECK(ptr->pkt_proc_delay); pptp_pkt_proc_delay_print(ndo, &ptr->pkt_proc_delay); ND_TCHECK(ptr->reserved1); return; trunc: ND_PRINT((ndo, "%s", tstr)); } static void pptp_iccn_print(netdissect_options *ndo, const u_char *dat) { struct pptp_msg_iccn *ptr = (struct pptp_msg_iccn *)dat; ND_TCHECK(ptr->peer_call_id); pptp_peer_call_id_print(ndo, &ptr->peer_call_id); ND_TCHECK(ptr->reserved1); ND_TCHECK(ptr->conn_speed); pptp_conn_speed_print(ndo, &ptr->conn_speed); ND_TCHECK(ptr->recv_winsiz); pptp_recv_winsiz_print(ndo, &ptr->recv_winsiz); ND_TCHECK(ptr->pkt_proc_delay); pptp_pkt_proc_delay_print(ndo, &ptr->pkt_proc_delay); ND_TCHECK(ptr->framing_type); pptp_framing_type_print(ndo, &ptr->framing_type); return; trunc: ND_PRINT((ndo, "%s", tstr)); } static void pptp_ccrq_print(netdissect_options *ndo, const u_char *dat) { struct pptp_msg_ccrq *ptr = (struct pptp_msg_ccrq *)dat; ND_TCHECK(ptr->call_id); pptp_call_id_print(ndo, &ptr->call_id); ND_TCHECK(ptr->reserved1); return; trunc: ND_PRINT((ndo, "%s", tstr)); } static void pptp_cdn_print(netdissect_options *ndo, const u_char *dat) { struct pptp_msg_cdn *ptr = (struct pptp_msg_cdn *)dat; ND_TCHECK(ptr->call_id); pptp_call_id_print(ndo, &ptr->call_id); ND_TCHECK(ptr->result_code); pptp_result_code_print(ndo, &ptr->result_code, PPTP_CTRL_MSG_TYPE_CDN); ND_TCHECK(ptr->err_code); pptp_err_code_print(ndo, &ptr->err_code); ND_TCHECK(ptr->cause_code); pptp_cause_code_print(ndo, &ptr->cause_code); ND_TCHECK(ptr->reserved1); ND_TCHECK(ptr->call_stats); ND_PRINT((ndo, " CALL_STATS(%.128s)", ptr->call_stats)); return; trunc: ND_PRINT((ndo, "%s", tstr)); } static void pptp_wen_print(netdissect_options *ndo, const u_char *dat) { struct pptp_msg_wen *ptr = (struct pptp_msg_wen *)dat; ND_TCHECK(ptr->peer_call_id); pptp_peer_call_id_print(ndo, &ptr->peer_call_id); ND_TCHECK(ptr->reserved1); ND_TCHECK(ptr->crc_err); ND_PRINT((ndo, " CRC_ERR(%u)", EXTRACT_32BITS(&ptr->crc_err))); ND_TCHECK(ptr->framing_err); ND_PRINT((ndo, " FRAMING_ERR(%u)", EXTRACT_32BITS(&ptr->framing_err))); ND_TCHECK(ptr->hardware_overrun); ND_PRINT((ndo, " HARDWARE_OVERRUN(%u)", EXTRACT_32BITS(&ptr->hardware_overrun))); ND_TCHECK(ptr->buffer_overrun); ND_PRINT((ndo, " BUFFER_OVERRUN(%u)", EXTRACT_32BITS(&ptr->buffer_overrun))); ND_TCHECK(ptr->timeout_err); ND_PRINT((ndo, " TIMEOUT_ERR(%u)", EXTRACT_32BITS(&ptr->timeout_err))); ND_TCHECK(ptr->align_err); ND_PRINT((ndo, " ALIGN_ERR(%u)", EXTRACT_32BITS(&ptr->align_err))); return; trunc: ND_PRINT((ndo, "%s", tstr)); } static void pptp_sli_print(netdissect_options *ndo, const u_char *dat) { struct pptp_msg_sli *ptr = (struct pptp_msg_sli *)dat; ND_TCHECK(ptr->peer_call_id); pptp_peer_call_id_print(ndo, &ptr->peer_call_id); ND_TCHECK(ptr->reserved1); ND_TCHECK(ptr->send_accm); ND_PRINT((ndo, " SEND_ACCM(0x%08x)", EXTRACT_32BITS(&ptr->send_accm))); ND_TCHECK(ptr->recv_accm); ND_PRINT((ndo, " RECV_ACCM(0x%08x)", EXTRACT_32BITS(&ptr->recv_accm))); return; trunc: ND_PRINT((ndo, "%s", tstr)); } void pptp_print(netdissect_options *ndo, const u_char *dat) { const struct pptp_hdr *hdr; u_int32_t mc; u_int16_t ctrl_msg_type; ND_PRINT((ndo, ": pptp")); hdr = (struct pptp_hdr *)dat; ND_TCHECK(hdr->length); if (ndo->ndo_vflag) { ND_PRINT((ndo, " Length=%u", EXTRACT_16BITS(&hdr->length))); } ND_TCHECK(hdr->msg_type); if (ndo->ndo_vflag) { switch(EXTRACT_16BITS(&hdr->msg_type)) { case PPTP_MSG_TYPE_CTRL: ND_PRINT((ndo, " CTRL-MSG")); break; case PPTP_MSG_TYPE_MGMT: ND_PRINT((ndo, " MGMT-MSG")); break; default: ND_PRINT((ndo, " UNKNOWN-MSG-TYPE")); break; } } ND_TCHECK(hdr->magic_cookie); mc = EXTRACT_32BITS(&hdr->magic_cookie); if (mc != PPTP_MAGIC_COOKIE) { ND_PRINT((ndo, " UNEXPECTED Magic-Cookie!!(%08x)", mc)); } if (ndo->ndo_vflag || mc != PPTP_MAGIC_COOKIE) { ND_PRINT((ndo, " Magic-Cookie=%08x", mc)); } ND_TCHECK(hdr->ctrl_msg_type); ctrl_msg_type = EXTRACT_16BITS(&hdr->ctrl_msg_type); if (ctrl_msg_type < PPTP_MAX_MSGTYPE_INDEX) { ND_PRINT((ndo, " CTRL_MSGTYPE=%s", pptp_message_type_string[ctrl_msg_type])); } else { ND_PRINT((ndo, " UNKNOWN_CTRL_MSGTYPE(%u)", ctrl_msg_type)); } ND_TCHECK(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((ndo, "%s", tstr)); }