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-rw-r--r--print-decnet.c1182
1 files changed, 1182 insertions, 0 deletions
diff --git a/print-decnet.c b/print-decnet.c
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index 0000000..6a6dd25
--- /dev/null
+++ b/print-decnet.c
@@ -0,0 +1,1182 @@
+/*
+ * Copyright (c) 1992, 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.
+ */
+
+/* \summary: DECnet printer */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include "netdissect-stdinc.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#define ND_LONGJMP_FROM_TCHECK
+#include "netdissect.h"
+#include "extract.h"
+#include "addrtoname.h"
+
+
+#ifndef _WIN32
+typedef nd_uint8_t byte; /* single byte field */
+#else
+/*
+ * the keyword 'byte' generates conflicts in Windows
+ */
+typedef nd_uint8_t Byte; /* single byte field */
+#define byte Byte
+#endif /* _WIN32 */
+typedef nd_uint16_t word; /* 2 byte field */
+typedef nd_uint32_t longword; /* 4 bytes field */
+
+/*
+ * Definitions for DECNET Phase IV protocol headers
+ */
+typedef union {
+ nd_mac_addr dne_addr; /* full Ethernet address */
+ struct {
+ nd_byte dne_hiord[4]; /* DECnet HIORD prefix */
+ nd_byte dne_nodeaddr[2]; /* DECnet node address */
+ } dne_remote;
+} etheraddr; /* Ethernet address */
+
+#define HIORD 0x000400aa /* high 32-bits of address (swapped) */
+
+#define AREAMASK 0176000 /* mask for area field */
+#define AREASHIFT 10 /* bit-offset for area field */
+#define NODEMASK 01777 /* mask for node address field */
+
+/*
+ * Define long and short header formats.
+ */
+struct shorthdr
+ {
+ byte sh_flags; /* route flags */
+ word sh_dst; /* destination node address */
+ word sh_src; /* source node address */
+ byte sh_visits; /* visit count */
+ };
+
+struct longhdr
+ {
+ byte lg_flags; /* route flags */
+ byte lg_darea; /* destination area (reserved) */
+ byte lg_dsarea; /* destination subarea (reserved) */
+ etheraddr lg_dst; /* destination id */
+ byte lg_sarea; /* source area (reserved) */
+ byte lg_ssarea; /* source subarea (reserved) */
+ etheraddr lg_src; /* source id */
+ byte lg_nextl2; /* next level 2 router (reserved) */
+ byte lg_visits; /* visit count */
+ byte lg_service; /* service class (reserved) */
+ byte lg_pt; /* protocol type (reserved) */
+ };
+
+union routehdr
+ {
+ struct shorthdr rh_short; /* short route header */
+ struct longhdr rh_long; /* long route header */
+ };
+
+/*
+ * Define the values of various fields in the protocol messages.
+ *
+ * 1. Data packet formats.
+ */
+#define RMF_MASK 7 /* mask for message type */
+#define RMF_SHORT 2 /* short message format */
+#define RMF_LONG 6 /* long message format */
+#ifndef RMF_RQR
+#define RMF_RQR 010 /* request return to sender */
+#define RMF_RTS 020 /* returning to sender */
+#define RMF_IE 040 /* intra-ethernet packet */
+#endif /* RMR_RQR */
+#define RMF_FVER 0100 /* future version flag */
+#define RMF_PAD 0200 /* pad field */
+#define RMF_PADMASK 0177 /* pad field mask */
+
+#define VIS_MASK 077 /* visit field mask */
+
+/*
+ * 2. Control packet formats.
+ */
+#define RMF_CTLMASK 017 /* mask for message type */
+#define RMF_CTLMSG 01 /* control message indicator */
+#define RMF_INIT 01 /* initialization message */
+#define RMF_VER 03 /* verification message */
+#define RMF_TEST 05 /* hello and test message */
+#define RMF_L1ROUT 07 /* level 1 routing message */
+#define RMF_L2ROUT 011 /* level 2 routing message */
+#define RMF_RHELLO 013 /* router hello message */
+#define RMF_EHELLO 015 /* endnode hello message */
+
+#define TI_L2ROUT 01 /* level 2 router */
+#define TI_L1ROUT 02 /* level 1 router */
+#define TI_ENDNODE 03 /* endnode */
+#define TI_VERIF 04 /* verification required */
+#define TI_BLOCK 010 /* blocking requested */
+
+#define VE_VERS 2 /* version number (2) */
+#define VE_ECO 0 /* ECO number */
+#define VE_UECO 0 /* user ECO number (0) */
+
+#define P3_VERS 1 /* phase III version number (1) */
+#define P3_ECO 3 /* ECO number (3) */
+#define P3_UECO 0 /* user ECO number (0) */
+
+#define II_L2ROUT 01 /* level 2 router */
+#define II_L1ROUT 02 /* level 1 router */
+#define II_ENDNODE 03 /* endnode */
+#define II_VERIF 04 /* verification required */
+#define II_NOMCAST 040 /* no multicast traffic accepted */
+#define II_BLOCK 0100 /* blocking requested */
+#define II_TYPEMASK 03 /* mask for node type */
+
+#define TESTDATA 0252 /* test data bytes */
+#define TESTLEN 1 /* length of transmitted test data */
+
+/*
+ * Define control message formats.
+ */
+struct initmsg /* initialization message */
+ {
+ byte in_flags; /* route flags */
+ word in_src; /* source node address */
+ byte in_info; /* routing layer information */
+ word in_blksize; /* maximum data link block size */
+ byte in_vers; /* version number */
+ byte in_eco; /* ECO number */
+ byte in_ueco; /* user ECO number */
+ word in_hello; /* hello timer */
+ byte in_rsvd; /* reserved image field */
+ };
+
+struct verifmsg /* verification message */
+ {
+ byte ve_flags; /* route flags */
+ word ve_src; /* source node address */
+ byte ve_fcnval; /* function value image field */
+ };
+
+struct testmsg /* hello and test message */
+ {
+ byte te_flags; /* route flags */
+ word te_src; /* source node address */
+ byte te_data; /* test data image field */
+ };
+
+struct l1rout /* level 1 routing message */
+ {
+ byte r1_flags; /* route flags */
+ word r1_src; /* source node address */
+ byte r1_rsvd; /* reserved field */
+ };
+
+struct l2rout /* level 2 routing message */
+ {
+ byte r2_flags; /* route flags */
+ word r2_src; /* source node address */
+ byte r2_rsvd; /* reserved field */
+ };
+
+struct rhellomsg /* router hello message */
+ {
+ byte rh_flags; /* route flags */
+ byte rh_vers; /* version number */
+ byte rh_eco; /* ECO number */
+ byte rh_ueco; /* user ECO number */
+ etheraddr rh_src; /* source id */
+ byte rh_info; /* routing layer information */
+ word rh_blksize; /* maximum data link block size */
+ byte rh_priority; /* router's priority */
+ byte rh_area; /* reserved */
+ word rh_hello; /* hello timer */
+ byte rh_mpd; /* reserved */
+ };
+
+struct ehellomsg /* endnode hello message */
+ {
+ byte eh_flags; /* route flags */
+ byte eh_vers; /* version number */
+ byte eh_eco; /* ECO number */
+ byte eh_ueco; /* user ECO number */
+ etheraddr eh_src; /* source id */
+ byte eh_info; /* routing layer information */
+ word eh_blksize; /* maximum data link block size */
+ byte eh_area; /* area (reserved) */
+ byte eh_seed[8]; /* verification seed */
+ etheraddr eh_router; /* designated router */
+ word eh_hello; /* hello timer */
+ byte eh_mpd; /* (reserved) */
+ byte eh_data; /* test data image field */
+ };
+
+union controlmsg
+ {
+ struct initmsg cm_init; /* initialization message */
+ struct verifmsg cm_ver; /* verification message */
+ struct testmsg cm_test; /* hello and test message */
+ struct l1rout cm_l1rou; /* level 1 routing message */
+ struct l2rout cm_l2rout; /* level 2 routing message */
+ struct rhellomsg cm_rhello; /* router hello message */
+ struct ehellomsg cm_ehello; /* endnode hello message */
+ };
+
+/* Macros for decoding routing-info fields */
+#define RI_COST(x) ((x)&0777)
+#define RI_HOPS(x) (((x)>>10)&037)
+
+/*
+ * NSP protocol fields and values.
+ */
+
+#define NSP_TYPEMASK 014 /* mask to isolate type code */
+#define NSP_SUBMASK 0160 /* mask to isolate subtype code */
+#define NSP_SUBSHFT 4 /* shift to move subtype code */
+
+#define MFT_DATA 0 /* data message */
+#define MFT_ACK 04 /* acknowledgement message */
+#define MFT_CTL 010 /* control message */
+
+#define MFS_ILS 020 /* data or I/LS indicator */
+#define MFS_BOM 040 /* beginning of message (data) */
+#define MFS_MOM 0 /* middle of message (data) */
+#define MFS_EOM 0100 /* end of message (data) */
+#define MFS_INT 040 /* interrupt message */
+
+#define MFS_DACK 0 /* data acknowledgement */
+#define MFS_IACK 020 /* I/LS acknowledgement */
+#define MFS_CACK 040 /* connect acknowledgement */
+
+#define MFS_NOP 0 /* no operation */
+#define MFS_CI 020 /* connect initiate */
+#define MFS_CC 040 /* connect confirm */
+#define MFS_DI 060 /* disconnect initiate */
+#define MFS_DC 0100 /* disconnect confirm */
+#define MFS_RCI 0140 /* retransmitted connect initiate */
+
+#define SGQ_ACK 0100000 /* ack */
+#define SGQ_NAK 0110000 /* negative ack */
+#define SGQ_OACK 0120000 /* other channel ack */
+#define SGQ_ONAK 0130000 /* other channel negative ack */
+#define SGQ_MASK 07777 /* mask to isolate seq # */
+#define SGQ_OTHER 020000 /* other channel qualifier */
+#define SGQ_DELAY 010000 /* ack delay flag */
+
+#define SGQ_EOM 0100000 /* pseudo flag for end-of-message */
+
+#define LSM_MASK 03 /* mask for modifier field */
+#define LSM_NOCHANGE 0 /* no change */
+#define LSM_DONOTSEND 1 /* do not send data */
+#define LSM_SEND 2 /* send data */
+
+#define LSI_MASK 014 /* mask for interpretation field */
+#define LSI_DATA 0 /* data segment or message count */
+#define LSI_INTR 4 /* interrupt request count */
+#define LSI_INTM 0377 /* funny marker for int. message */
+
+#define COS_MASK 014 /* mask for flow control field */
+#define COS_NONE 0 /* no flow control */
+#define COS_SEGMENT 04 /* segment flow control */
+#define COS_MESSAGE 010 /* message flow control */
+#define COS_DEFAULT 1 /* default value for field */
+
+#define COI_MASK 3 /* mask for version field */
+#define COI_32 0 /* version 3.2 */
+#define COI_31 1 /* version 3.1 */
+#define COI_40 2 /* version 4.0 */
+#define COI_41 3 /* version 4.1 */
+
+#define MNU_MASK 140 /* mask for session control version */
+#define MNU_10 000 /* session V1.0 */
+#define MNU_20 040 /* session V2.0 */
+#define MNU_ACCESS 1 /* access control present */
+#define MNU_USRDATA 2 /* user data field present */
+#define MNU_INVKPROXY 4 /* invoke proxy field present */
+#define MNU_UICPROXY 8 /* use uic-based proxy */
+
+#define DC_NORESOURCES 1 /* no resource reason code */
+#define DC_NOLINK 41 /* no link terminate reason code */
+#define DC_COMPLETE 42 /* disconnect complete reason code */
+
+#define DI_NOERROR 0 /* user disconnect */
+#define DI_SHUT 3 /* node is shutting down */
+#define DI_NOUSER 4 /* destination end user does not exist */
+#define DI_INVDEST 5 /* invalid end user destination */
+#define DI_REMRESRC 6 /* insufficient remote resources */
+#define DI_TPA 8 /* third party abort */
+#define DI_PROTOCOL 7 /* protocol error discovered */
+#define DI_ABORT 9 /* user abort */
+#define DI_LOCALRESRC 32 /* insufficient local resources */
+#define DI_REMUSERRESRC 33 /* insufficient remote user resources */
+#define DI_BADACCESS 34 /* bad access control information */
+#define DI_BADACCNT 36 /* bad ACCOUNT information */
+#define DI_CONNECTABORT 38 /* connect request cancelled */
+#define DI_TIMEDOUT 38 /* remote node or user crashed */
+#define DI_UNREACHABLE 39 /* local timers expired due to ... */
+#define DI_BADIMAGE 43 /* bad image data in connect */
+#define DI_SERVMISMATCH 54 /* cryptographic service mismatch */
+
+#define UC_OBJREJECT 0 /* object rejected connect */
+#define UC_USERDISCONNECT 0 /* user disconnect */
+#define UC_RESOURCES 1 /* insufficient resources (local or remote) */
+#define UC_NOSUCHNODE 2 /* unrecognized node name */
+#define UC_REMOTESHUT 3 /* remote node shutting down */
+#define UC_NOSUCHOBJ 4 /* unrecognized object */
+#define UC_INVOBJFORMAT 5 /* invalid object name format */
+#define UC_OBJTOOBUSY 6 /* object too busy */
+#define UC_NETWORKABORT 8 /* network abort */
+#define UC_USERABORT 9 /* user abort */
+#define UC_INVNODEFORMAT 10 /* invalid node name format */
+#define UC_LOCALSHUT 11 /* local node shutting down */
+#define UC_ACCESSREJECT 34 /* invalid access control information */
+#define UC_NORESPONSE 38 /* no response from object */
+#define UC_UNREACHABLE 39 /* node unreachable */
+
+/*
+ * NSP message formats.
+ */
+struct nsphdr /* general nsp header */
+ {
+ byte nh_flags; /* message flags */
+ word nh_dst; /* destination link address */
+ word nh_src; /* source link address */
+ };
+
+struct seghdr /* data segment header */
+ {
+ byte sh_flags; /* message flags */
+ word sh_dst; /* destination link address */
+ word sh_src; /* source link address */
+ word sh_seq[3]; /* sequence numbers */
+ };
+
+struct minseghdr /* minimum data segment header */
+ {
+ byte ms_flags; /* message flags */
+ word ms_dst; /* destination link address */
+ word ms_src; /* source link address */
+ word ms_seq; /* sequence number */
+ };
+
+struct lsmsg /* link service message (after hdr) */
+ {
+ byte ls_lsflags; /* link service flags */
+ byte ls_fcval; /* flow control value */
+ };
+
+struct ackmsg /* acknowledgement message */
+ {
+ byte ak_flags; /* message flags */
+ word ak_dst; /* destination link address */
+ word ak_src; /* source link address */
+ word ak_acknum[2]; /* acknowledgement numbers */
+ };
+
+struct minackmsg /* minimum acknowledgement message */
+ {
+ byte mk_flags; /* message flags */
+ word mk_dst; /* destination link address */
+ word mk_src; /* source link address */
+ word mk_acknum; /* acknowledgement number */
+ };
+
+struct ciackmsg /* connect acknowledgement message */
+ {
+ byte ck_flags; /* message flags */
+ word ck_dst; /* destination link address */
+ };
+
+struct cimsg /* connect initiate message */
+ {
+ byte ci_flags; /* message flags */
+ word ci_dst; /* destination link address (0) */
+ word ci_src; /* source link address */
+ byte ci_services; /* requested services */
+ byte ci_info; /* information */
+ word ci_segsize; /* maximum segment size */
+ };
+
+struct ccmsg /* connect confirm message */
+ {
+ byte cc_flags; /* message flags */
+ word cc_dst; /* destination link address */
+ word cc_src; /* source link address */
+ byte cc_services; /* requested services */
+ byte cc_info; /* information */
+ word cc_segsize; /* maximum segment size */
+ byte cc_optlen; /* optional data length */
+ };
+
+struct cnmsg /* generic connect message */
+ {
+ byte cn_flags; /* message flags */
+ word cn_dst; /* destination link address */
+ word cn_src; /* source link address */
+ byte cn_services; /* requested services */
+ byte cn_info; /* information */
+ word cn_segsize; /* maximum segment size */
+ };
+
+struct dimsg /* disconnect initiate message */
+ {
+ byte di_flags; /* message flags */
+ word di_dst; /* destination link address */
+ word di_src; /* source link address */
+ word di_reason; /* reason code */
+ byte di_optlen; /* optional data length */
+ };
+
+struct dcmsg /* disconnect confirm message */
+ {
+ byte dc_flags; /* message flags */
+ word dc_dst; /* destination link address */
+ word dc_src; /* source link address */
+ word dc_reason; /* reason code */
+ };
+
+/* Forwards */
+static int print_decnet_ctlmsg(netdissect_options *, const union routehdr *, u_int, u_int);
+static void print_t_info(netdissect_options *, u_int);
+static void print_l1_routes(netdissect_options *, const u_char *, u_int);
+static void print_l2_routes(netdissect_options *, const u_char *, u_int);
+static void print_i_info(netdissect_options *, u_int);
+static void print_elist(const u_char *, u_int);
+static int print_nsp(netdissect_options *, const u_char *, u_int);
+static void print_reason(netdissect_options *, u_int);
+
+void
+decnet_print(netdissect_options *ndo,
+ const u_char *ap, u_int length,
+ u_int caplen)
+{
+ const union routehdr *rhp;
+ u_int mflags;
+ uint16_t dst, src;
+ u_int hops;
+ u_int nsplen, pktlen;
+ const u_char *nspp;
+
+ ndo->ndo_protocol = "decnet";
+ if (length < sizeof(struct shorthdr)) {
+ ND_PRINT(" (length %u < %zu)", length, sizeof(struct shorthdr));
+ goto invalid;
+ }
+
+ pktlen = GET_LE_U_2(ap);
+ if (pktlen < sizeof(struct shorthdr)) {
+ ND_PRINT(" (pktlen %u < %zu)", pktlen, sizeof(struct shorthdr));
+ goto invalid;
+ }
+ if (pktlen > length) {
+ ND_PRINT(" (pktlen %u > %u)", pktlen, length);
+ goto invalid;
+ }
+ length = pktlen;
+
+ rhp = (const union routehdr *)(ap + sizeof(short));
+ mflags = GET_U_1(rhp->rh_short.sh_flags);
+
+ if (mflags & RMF_PAD) {
+ /* pad bytes of some sort in front of message */
+ u_int padlen = mflags & RMF_PADMASK;
+ if (ndo->ndo_vflag)
+ ND_PRINT("[pad:%u] ", padlen);
+ if (length < padlen + 2) {
+ ND_PRINT(" (length %u < %u)", length, padlen + 2);
+ goto invalid;
+ }
+ ND_TCHECK_LEN(ap + sizeof(short), padlen);
+ ap += padlen;
+ length -= padlen;
+ caplen -= padlen;
+ rhp = (const union routehdr *)(ap + sizeof(short));
+ mflags = GET_U_1(rhp->rh_short.sh_flags);
+ }
+
+ if (mflags & RMF_FVER) {
+ ND_PRINT("future-version-decnet");
+ ND_DEFAULTPRINT(ap, ND_MIN(length, caplen));
+ return;
+ }
+
+ /* is it a control message? */
+ if (mflags & RMF_CTLMSG) {
+ if (!print_decnet_ctlmsg(ndo, rhp, length, caplen))
+ goto invalid;
+ return;
+ }
+
+ switch (mflags & RMF_MASK) {
+ case RMF_LONG:
+ if (length < sizeof(struct longhdr)) {
+ ND_PRINT(" (length %u < %zu)", length, sizeof(struct longhdr));
+ goto invalid;
+ }
+ ND_TCHECK_SIZE(&rhp->rh_long);
+ dst =
+ GET_LE_U_2(rhp->rh_long.lg_dst.dne_remote.dne_nodeaddr);
+ src =
+ GET_LE_U_2(rhp->rh_long.lg_src.dne_remote.dne_nodeaddr);
+ hops = GET_U_1(rhp->rh_long.lg_visits);
+ nspp = ap + sizeof(short) + sizeof(struct longhdr);
+ nsplen = length - sizeof(struct longhdr);
+ break;
+ case RMF_SHORT:
+ dst = GET_LE_U_2(rhp->rh_short.sh_dst);
+ src = GET_LE_U_2(rhp->rh_short.sh_src);
+ hops = (GET_U_1(rhp->rh_short.sh_visits) & VIS_MASK)+1;
+ nspp = ap + sizeof(short) + sizeof(struct shorthdr);
+ nsplen = length - sizeof(struct shorthdr);
+ break;
+ default:
+ ND_PRINT("unknown message flags under mask");
+ ND_DEFAULTPRINT((const u_char *)ap, ND_MIN(length, caplen));
+ return;
+ }
+
+ ND_PRINT("%s > %s %u ",
+ dnaddr_string(ndo, src), dnaddr_string(ndo, dst), pktlen);
+ if (ndo->ndo_vflag) {
+ if (mflags & RMF_RQR)
+ ND_PRINT("RQR ");
+ if (mflags & RMF_RTS)
+ ND_PRINT("RTS ");
+ if (mflags & RMF_IE)
+ ND_PRINT("IE ");
+ ND_PRINT("%u hops ", hops);
+ }
+
+ if (!print_nsp(ndo, nspp, nsplen))
+ goto invalid;
+ return;
+
+invalid:
+ nd_print_invalid(ndo);
+}
+
+static int
+print_decnet_ctlmsg(netdissect_options *ndo,
+ const union routehdr *rhp, u_int length,
+ u_int caplen)
+{
+ /* Our caller has already checked for mflags */
+ u_int mflags = GET_U_1(rhp->rh_short.sh_flags);
+ const union controlmsg *cmp = (const union controlmsg *)rhp;
+ uint16_t src, dst;
+ u_int info, blksize, eco, ueco, hello, other, vers;
+ u_int priority;
+ const u_char *rhpx = (const u_char *)rhp;
+
+ switch (mflags & RMF_CTLMASK) {
+ case RMF_INIT:
+ ND_PRINT("init ");
+ if (length < sizeof(struct initmsg))
+ goto invalid;
+ ND_TCHECK_SIZE(&cmp->cm_init);
+ src = GET_LE_U_2(cmp->cm_init.in_src);
+ info = GET_U_1(cmp->cm_init.in_info);
+ blksize = GET_LE_U_2(cmp->cm_init.in_blksize);
+ vers = GET_U_1(cmp->cm_init.in_vers);
+ eco = GET_U_1(cmp->cm_init.in_eco);
+ ueco = GET_U_1(cmp->cm_init.in_ueco);
+ hello = GET_LE_U_2(cmp->cm_init.in_hello);
+ print_t_info(ndo, info);
+ ND_PRINT("src %sblksize %u vers %u eco %u ueco %u hello %u",
+ dnaddr_string(ndo, src), blksize, vers, eco, ueco,
+ hello);
+ break;
+ case RMF_VER:
+ ND_PRINT("verification ");
+ if (length < sizeof(struct verifmsg))
+ goto invalid;
+ src = GET_LE_U_2(cmp->cm_ver.ve_src);
+ other = GET_U_1(cmp->cm_ver.ve_fcnval);
+ ND_PRINT("src %s fcnval %o", dnaddr_string(ndo, src), other);
+ break;
+ case RMF_TEST:
+ ND_PRINT("test ");
+ if (length < sizeof(struct testmsg))
+ goto invalid;
+ src = GET_LE_U_2(cmp->cm_test.te_src);
+ other = GET_U_1(cmp->cm_test.te_data);
+ ND_PRINT("src %s data %o", dnaddr_string(ndo, src), other);
+ break;
+ case RMF_L1ROUT:
+ ND_PRINT("lev-1-routing ");
+ if (length < sizeof(struct l1rout))
+ goto invalid;
+ ND_TCHECK_SIZE(&cmp->cm_l1rou);
+ src = GET_LE_U_2(cmp->cm_l1rou.r1_src);
+ ND_PRINT("src %s ", dnaddr_string(ndo, src));
+ print_l1_routes(ndo, &(rhpx[sizeof(struct l1rout)]),
+ length - sizeof(struct l1rout));
+ break;
+ case RMF_L2ROUT:
+ ND_PRINT("lev-2-routing ");
+ if (length < sizeof(struct l2rout))
+ goto invalid;
+ ND_TCHECK_SIZE(&cmp->cm_l2rout);
+ src = GET_LE_U_2(cmp->cm_l2rout.r2_src);
+ ND_PRINT("src %s ", dnaddr_string(ndo, src));
+ print_l2_routes(ndo, &(rhpx[sizeof(struct l2rout)]),
+ length - sizeof(struct l2rout));
+ break;
+ case RMF_RHELLO:
+ ND_PRINT("router-hello ");
+ if (length < sizeof(struct rhellomsg))
+ goto invalid;
+ ND_TCHECK_SIZE(&cmp->cm_rhello);
+ vers = GET_U_1(cmp->cm_rhello.rh_vers);
+ eco = GET_U_1(cmp->cm_rhello.rh_eco);
+ ueco = GET_U_1(cmp->cm_rhello.rh_ueco);
+ src =
+ GET_LE_U_2(cmp->cm_rhello.rh_src.dne_remote.dne_nodeaddr);
+ info = GET_U_1(cmp->cm_rhello.rh_info);
+ blksize = GET_LE_U_2(cmp->cm_rhello.rh_blksize);
+ priority = GET_U_1(cmp->cm_rhello.rh_priority);
+ hello = GET_LE_U_2(cmp->cm_rhello.rh_hello);
+ print_i_info(ndo, info);
+ ND_PRINT("vers %u eco %u ueco %u src %s blksize %u pri %u hello %u",
+ vers, eco, ueco, dnaddr_string(ndo, src),
+ blksize, priority, hello);
+ print_elist(&(rhpx[sizeof(struct rhellomsg)]),
+ length - sizeof(struct rhellomsg));
+ break;
+ case RMF_EHELLO:
+ ND_PRINT("endnode-hello ");
+ if (length < sizeof(struct ehellomsg))
+ goto invalid;
+ vers = GET_U_1(cmp->cm_ehello.eh_vers);
+ eco = GET_U_1(cmp->cm_ehello.eh_eco);
+ ueco = GET_U_1(cmp->cm_ehello.eh_ueco);
+ src =
+ GET_LE_U_2(cmp->cm_ehello.eh_src.dne_remote.dne_nodeaddr);
+ info = GET_U_1(cmp->cm_ehello.eh_info);
+ blksize = GET_LE_U_2(cmp->cm_ehello.eh_blksize);
+ /*seed*/
+ dst =
+ GET_LE_U_2(cmp->cm_ehello.eh_router.dne_remote.dne_nodeaddr);
+ hello = GET_LE_U_2(cmp->cm_ehello.eh_hello);
+ other = GET_U_1(cmp->cm_ehello.eh_data);
+ print_i_info(ndo, info);
+ ND_PRINT("vers %u eco %u ueco %u src %s blksize %u rtr %s hello %u data %o",
+ vers, eco, ueco, dnaddr_string(ndo, src),
+ blksize, dnaddr_string(ndo, dst), hello, other);
+ break;
+
+ default:
+ ND_PRINT("unknown control message");
+ ND_DEFAULTPRINT((const u_char *)rhp, ND_MIN(length, caplen));
+ break;
+ }
+ return (1);
+
+invalid:
+ return (0);
+}
+
+static void
+print_t_info(netdissect_options *ndo,
+ u_int info)
+{
+ u_int ntype = info & 3;
+ switch (ntype) {
+ case 0: ND_PRINT("reserved-ntype? "); break;
+ case TI_L2ROUT: ND_PRINT("l2rout "); break;
+ case TI_L1ROUT: ND_PRINT("l1rout "); break;
+ case TI_ENDNODE: ND_PRINT("endnode "); break;
+ }
+ if (info & TI_VERIF)
+ ND_PRINT("verif ");
+ if (info & TI_BLOCK)
+ ND_PRINT("blo ");
+}
+
+static void
+print_l1_routes(netdissect_options *ndo,
+ const u_char *rp, u_int len)
+{
+ u_int count;
+ u_int id;
+ u_int info;
+
+ /* The last short is a checksum */
+ while (len > (3 * sizeof(short))) {
+ ND_TCHECK_LEN(rp, 3 * sizeof(short));
+ count = GET_LE_U_2(rp);
+ if (count > 1024)
+ return; /* seems to be bogus from here on */
+ rp += sizeof(short);
+ len -= sizeof(short);
+ id = GET_LE_U_2(rp);
+ rp += sizeof(short);
+ len -= sizeof(short);
+ info = GET_LE_U_2(rp);
+ rp += sizeof(short);
+ len -= sizeof(short);
+ ND_PRINT("{ids %u-%u cost %u hops %u} ", id, id + count,
+ RI_COST(info), RI_HOPS(info));
+ }
+}
+
+static void
+print_l2_routes(netdissect_options *ndo,
+ const u_char *rp, u_int len)
+{
+ u_int count;
+ u_int area;
+ u_int info;
+
+ /* The last short is a checksum */
+ while (len > (3 * sizeof(short))) {
+ ND_TCHECK_LEN(rp, 3 * sizeof(short));
+ count = GET_LE_U_2(rp);
+ if (count > 1024)
+ return; /* seems to be bogus from here on */
+ rp += sizeof(short);
+ len -= sizeof(short);
+ area = GET_LE_U_2(rp);
+ rp += sizeof(short);
+ len -= sizeof(short);
+ info = GET_LE_U_2(rp);
+ rp += sizeof(short);
+ len -= sizeof(short);
+ ND_PRINT("{areas %u-%u cost %u hops %u} ", area, area + count,
+ RI_COST(info), RI_HOPS(info));
+ }
+}
+
+static void
+print_i_info(netdissect_options *ndo,
+ u_int info)
+{
+ u_int ntype = info & II_TYPEMASK;
+ switch (ntype) {
+ case 0: ND_PRINT("reserved-ntype? "); break;
+ case II_L2ROUT: ND_PRINT("l2rout "); break;
+ case II_L1ROUT: ND_PRINT("l1rout "); break;
+ case II_ENDNODE: ND_PRINT("endnode "); break;
+ }
+ if (info & II_VERIF)
+ ND_PRINT("verif ");
+ if (info & II_NOMCAST)
+ ND_PRINT("nomcast ");
+ if (info & II_BLOCK)
+ ND_PRINT("blo ");
+}
+
+static void
+print_elist(const u_char *elp _U_, u_int len _U_)
+{
+ /* Not enough examples available for me to debug this */
+}
+
+static int
+print_nsp(netdissect_options *ndo,
+ const u_char *nspp, u_int nsplen)
+{
+ const struct nsphdr *nsphp = (const struct nsphdr *)nspp;
+ u_int dst, src, flags;
+
+ if (nsplen < sizeof(struct nsphdr)) {
+ ND_PRINT(" (nsplen %u < %zu)", nsplen, sizeof(struct nsphdr));
+ goto invalid;
+ }
+ flags = GET_U_1(nsphp->nh_flags);
+ dst = GET_LE_U_2(nsphp->nh_dst);
+ src = GET_LE_U_2(nsphp->nh_src);
+
+ switch (flags & NSP_TYPEMASK) {
+ case MFT_DATA:
+ switch (flags & NSP_SUBMASK) {
+ case MFS_BOM:
+ case MFS_MOM:
+ case MFS_EOM:
+ case MFS_BOM+MFS_EOM:
+ ND_PRINT("data %u>%u ", src, dst);
+ {
+ const struct seghdr *shp = (const struct seghdr *)nspp;
+ u_int ack;
+ u_int data_off = sizeof(struct minseghdr);
+
+ if (nsplen < data_off)
+ goto invalid;
+ ack = GET_LE_U_2(shp->sh_seq[0]);
+ if (ack & SGQ_ACK) { /* acknum field */
+ if ((ack & SGQ_NAK) == SGQ_NAK)
+ ND_PRINT("nak %u ", ack & SGQ_MASK);
+ else
+ ND_PRINT("ack %u ", ack & SGQ_MASK);
+ data_off += sizeof(short);
+ if (nsplen < data_off)
+ goto invalid;
+ ack = GET_LE_U_2(shp->sh_seq[1]);
+ if (ack & SGQ_OACK) { /* ackoth field */
+ if ((ack & SGQ_ONAK) == SGQ_ONAK)
+ ND_PRINT("onak %u ", ack & SGQ_MASK);
+ else
+ ND_PRINT("oack %u ", ack & SGQ_MASK);
+ data_off += sizeof(short);
+ if (nsplen < data_off)
+ goto invalid;
+ ack = GET_LE_U_2(shp->sh_seq[2]);
+ }
+ }
+ ND_PRINT("seg %u ", ack & SGQ_MASK);
+ }
+ break;
+ case MFS_ILS+MFS_INT:
+ ND_PRINT("intr ");
+ {
+ const struct seghdr *shp = (const struct seghdr *)nspp;
+ u_int ack;
+ u_int data_off = sizeof(struct minseghdr);
+
+ if (nsplen < data_off)
+ goto invalid;
+ ack = GET_LE_U_2(shp->sh_seq[0]);
+ if (ack & SGQ_ACK) { /* acknum field */
+ if ((ack & SGQ_NAK) == SGQ_NAK)
+ ND_PRINT("nak %u ", ack & SGQ_MASK);
+ else
+ ND_PRINT("ack %u ", ack & SGQ_MASK);
+ data_off += sizeof(short);
+ if (nsplen < data_off)
+ goto invalid;
+ ack = GET_LE_U_2(shp->sh_seq[1]);
+ if (ack & SGQ_OACK) { /* ackdat field */
+ if ((ack & SGQ_ONAK) == SGQ_ONAK)
+ ND_PRINT("nakdat %u ", ack & SGQ_MASK);
+ else
+ ND_PRINT("ackdat %u ", ack & SGQ_MASK);
+ data_off += sizeof(short);
+ if (nsplen < data_off)
+ goto invalid;
+ ack = GET_LE_U_2(shp->sh_seq[2]);
+ }
+ }
+ ND_PRINT("seg %u ", ack & SGQ_MASK);
+ }
+ break;
+ case MFS_ILS:
+ ND_PRINT("link-service %u>%u ", src, dst);
+ {
+ const struct seghdr *shp = (const struct seghdr *)nspp;
+ const struct lsmsg *lsmp =
+ (const struct lsmsg *)(nspp + sizeof(struct seghdr));
+ u_int ack;
+ u_int lsflags, fcval;
+
+ if (nsplen < sizeof(struct seghdr) + sizeof(struct lsmsg))
+ goto invalid;
+ ack = GET_LE_U_2(shp->sh_seq[0]);
+ if (ack & SGQ_ACK) { /* acknum field */
+ if ((ack & SGQ_NAK) == SGQ_NAK)
+ ND_PRINT("nak %u ", ack & SGQ_MASK);
+ else
+ ND_PRINT("ack %u ", ack & SGQ_MASK);
+ ack = GET_LE_U_2(shp->sh_seq[1]);
+ if (ack & SGQ_OACK) { /* ackdat field */
+ if ((ack & SGQ_ONAK) == SGQ_ONAK)
+ ND_PRINT("nakdat %u ", ack & SGQ_MASK);
+ else
+ ND_PRINT("ackdat %u ", ack & SGQ_MASK);
+ ack = GET_LE_U_2(shp->sh_seq[2]);
+ }
+ }
+ ND_PRINT("seg %u ", ack & SGQ_MASK);
+ lsflags = GET_U_1(lsmp->ls_lsflags);
+ fcval = GET_U_1(lsmp->ls_fcval);
+ switch (lsflags & LSI_MASK) {
+ case LSI_DATA:
+ ND_PRINT("dat seg count %u ", fcval);
+ switch (lsflags & LSM_MASK) {
+ case LSM_NOCHANGE:
+ break;
+ case LSM_DONOTSEND:
+ ND_PRINT("donotsend-data ");
+ break;
+ case LSM_SEND:
+ ND_PRINT("send-data ");
+ break;
+ default:
+ ND_PRINT("reserved-fcmod? %x", lsflags);
+ break;
+ }
+ break;
+ case LSI_INTR:
+ ND_PRINT("intr req count %u ", fcval);
+ break;
+ default:
+ ND_PRINT("reserved-fcval-int? %x", lsflags);
+ break;
+ }
+ }
+ break;
+ default:
+ ND_PRINT("reserved-subtype? %x %u > %u", flags, src, dst);
+ break;
+ }
+ break;
+ case MFT_ACK:
+ switch (flags & NSP_SUBMASK) {
+ case MFS_DACK:
+ ND_PRINT("data-ack %u>%u ", src, dst);
+ {
+ const struct ackmsg *amp = (const struct ackmsg *)nspp;
+ u_int ack;
+
+ if (nsplen < sizeof(struct ackmsg))
+ goto invalid;
+ ND_TCHECK_SIZE(amp);
+ ack = GET_LE_U_2(amp->ak_acknum[0]);
+ if (ack & SGQ_ACK) { /* acknum field */
+ if ((ack & SGQ_NAK) == SGQ_NAK)
+ ND_PRINT("nak %u ", ack & SGQ_MASK);
+ else
+ ND_PRINT("ack %u ", ack & SGQ_MASK);
+ ack = GET_LE_U_2(amp->ak_acknum[1]);
+ if (ack & SGQ_OACK) { /* ackoth field */
+ if ((ack & SGQ_ONAK) == SGQ_ONAK)
+ ND_PRINT("onak %u ", ack & SGQ_MASK);
+ else
+ ND_PRINT("oack %u ", ack & SGQ_MASK);
+ }
+ }
+ }
+ break;
+ case MFS_IACK:
+ ND_PRINT("ils-ack %u>%u ", src, dst);
+ {
+ const struct ackmsg *amp = (const struct ackmsg *)nspp;
+ u_int ack;
+
+ if (nsplen < sizeof(struct ackmsg))
+ goto invalid;
+ ND_TCHECK_SIZE(amp);
+ ack = GET_LE_U_2(amp->ak_acknum[0]);
+ if (ack & SGQ_ACK) { /* acknum field */
+ if ((ack & SGQ_NAK) == SGQ_NAK)
+ ND_PRINT("nak %u ", ack & SGQ_MASK);
+ else
+ ND_PRINT("ack %u ", ack & SGQ_MASK);
+ ack = GET_LE_U_2(amp->ak_acknum[1]);
+ if (ack & SGQ_OACK) { /* ackdat field */
+ if ((ack & SGQ_ONAK) == SGQ_ONAK)
+ ND_PRINT("nakdat %u ", ack & SGQ_MASK);
+ else
+ ND_PRINT("ackdat %u ", ack & SGQ_MASK);
+ }
+ }
+ }
+ break;
+ case MFS_CACK:
+ ND_PRINT("conn-ack %u", dst);
+ break;
+ default:
+ ND_PRINT("reserved-acktype? %x %u > %u", flags, src, dst);
+ break;
+ }
+ break;
+ case MFT_CTL:
+ switch (flags & NSP_SUBMASK) {
+ case MFS_CI:
+ case MFS_RCI:
+ if ((flags & NSP_SUBMASK) == MFS_CI)
+ ND_PRINT("conn-initiate ");
+ else
+ ND_PRINT("retrans-conn-initiate ");
+ ND_PRINT("%u>%u ", src, dst);
+ {
+ const struct cimsg *cimp = (const struct cimsg *)nspp;
+ u_int services, info, segsize;
+
+ if (nsplen < sizeof(struct cimsg))
+ goto invalid;
+ services = GET_U_1(cimp->ci_services);
+ info = GET_U_1(cimp->ci_info);
+ segsize = GET_LE_U_2(cimp->ci_segsize);
+
+ switch (services & COS_MASK) {
+ case COS_NONE:
+ break;
+ case COS_SEGMENT:
+ ND_PRINT("seg ");
+ break;
+ case COS_MESSAGE:
+ ND_PRINT("msg ");
+ break;
+ }
+ switch (info & COI_MASK) {
+ case COI_32:
+ ND_PRINT("ver 3.2 ");
+ break;
+ case COI_31:
+ ND_PRINT("ver 3.1 ");
+ break;
+ case COI_40:
+ ND_PRINT("ver 4.0 ");
+ break;
+ case COI_41:
+ ND_PRINT("ver 4.1 ");
+ break;
+ }
+ ND_PRINT("segsize %u ", segsize);
+ }
+ break;
+ case MFS_CC:
+ ND_PRINT("conn-confirm %u>%u ", src, dst);
+ {
+ const struct ccmsg *ccmp = (const struct ccmsg *)nspp;
+ u_int services, info;
+ u_int segsize, optlen;
+
+ if (nsplen < sizeof(struct ccmsg))
+ goto invalid;
+ services = GET_U_1(ccmp->cc_services);
+ info = GET_U_1(ccmp->cc_info);
+ segsize = GET_LE_U_2(ccmp->cc_segsize);
+ optlen = GET_U_1(ccmp->cc_optlen);
+
+ switch (services & COS_MASK) {
+ case COS_NONE:
+ break;
+ case COS_SEGMENT:
+ ND_PRINT("seg ");
+ break;
+ case COS_MESSAGE:
+ ND_PRINT("msg ");
+ break;
+ }
+ switch (info & COI_MASK) {
+ case COI_32:
+ ND_PRINT("ver 3.2 ");
+ break;
+ case COI_31:
+ ND_PRINT("ver 3.1 ");
+ break;
+ case COI_40:
+ ND_PRINT("ver 4.0 ");
+ break;
+ case COI_41:
+ ND_PRINT("ver 4.1 ");
+ break;
+ }
+ ND_PRINT("segsize %u ", segsize);
+ if (optlen) {
+ ND_PRINT("optlen %u ", optlen);
+ }
+ }
+ break;
+ case MFS_DI:
+ ND_PRINT("disconn-initiate %u>%u ", src, dst);
+ {
+ const struct dimsg *dimp = (const struct dimsg *)nspp;
+ u_int reason;
+ u_int optlen;
+
+ if (nsplen < sizeof(struct dimsg))
+ goto invalid;
+ reason = GET_LE_U_2(dimp->di_reason);
+ optlen = GET_U_1(dimp->di_optlen);
+
+ print_reason(ndo, reason);
+ if (optlen) {
+ ND_PRINT("optlen %u ", optlen);
+ }
+ }
+ break;
+ case MFS_DC:
+ ND_PRINT("disconn-confirm %u>%u ", src, dst);
+ {
+ const struct dcmsg *dcmp = (const struct dcmsg *)nspp;
+ u_int reason;
+
+ reason = GET_LE_U_2(dcmp->dc_reason);
+
+ print_reason(ndo, reason);
+ }
+ break;
+ default:
+ ND_PRINT("reserved-ctltype? %x %u > %u", flags, src, dst);
+ break;
+ }
+ break;
+ default:
+ ND_PRINT("reserved-type? %x %u > %u", flags, src, dst);
+ break;
+ }
+ return (1);
+
+invalid:
+ return (0);
+}
+
+static const struct tok reason2str[] = {
+ { UC_OBJREJECT, "object rejected connect" },
+ { UC_RESOURCES, "insufficient resources" },
+ { UC_NOSUCHNODE, "unrecognized node name" },
+ { DI_SHUT, "node is shutting down" },
+ { UC_NOSUCHOBJ, "unrecognized object" },
+ { UC_INVOBJFORMAT, "invalid object name format" },
+ { UC_OBJTOOBUSY, "object too busy" },
+ { DI_PROTOCOL, "protocol error discovered" },
+ { DI_TPA, "third party abort" },
+ { UC_USERABORT, "user abort" },
+ { UC_INVNODEFORMAT, "invalid node name format" },
+ { UC_LOCALSHUT, "local node shutting down" },
+ { DI_LOCALRESRC, "insufficient local resources" },
+ { DI_REMUSERRESRC, "insufficient remote user resources" },
+ { UC_ACCESSREJECT, "invalid access control information" },
+ { DI_BADACCNT, "bad ACCOUNT information" },
+ { UC_NORESPONSE, "no response from object" },
+ { UC_UNREACHABLE, "node unreachable" },
+ { DC_NOLINK, "no link terminate" },
+ { DC_COMPLETE, "disconnect complete" },
+ { DI_BADIMAGE, "bad image data in connect" },
+ { DI_SERVMISMATCH, "cryptographic service mismatch" },
+ { 0, NULL }
+};
+
+static void
+print_reason(netdissect_options *ndo,
+ u_int reason)
+{
+ ND_PRINT("%s ", tok2str(reason2str, "reason-%u", reason));
+}
+
+const char *
+dnnum_string(netdissect_options *ndo, u_short dnaddr)
+{
+ char *str;
+ size_t siz;
+ u_int area = (u_short)(dnaddr & AREAMASK) >> AREASHIFT;
+ u_int node = dnaddr & NODEMASK;
+
+ /* malloc() return used by the 'dnaddrtable' hash table: do not free() */
+ str = (char *)malloc(siz = sizeof("00.0000"));
+ if (str == NULL)
+ (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, "%s: malloc", __func__);
+ snprintf(str, siz, "%u.%u", area, node);
+ return(str);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-26 02:10:52 +0000