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      1 /*
      2  * Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997
      3  *	The Regents of the University of California.  All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that: (1) source code distributions
      7  * retain the above copyright notice and this paragraph in its entirety, (2)
      8  * distributions including binary code include the above copyright notice and
      9  * this paragraph in its entirety in the documentation or other materials
     10  * provided with the distribution, and (3) all advertising materials mentioning
     11  * features or use of this software display the following acknowledgement:
     12  * ``This product includes software developed by the University of California,
     13  * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
     14  * the University nor the names of its contributors may be used to endorse
     15  * or promote products derived from this software without specific prior
     16  * written permission.
     17  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
     18  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
     19  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
     20  */
     21 
     22 #define NETDISSECT_REWORKED
     23 #ifdef HAVE_CONFIG_H
     24 #include "config.h"
     25 #endif
     26 
     27 #include <tcpdump-stdinc.h>
     28 
     29 #include "interface.h"
     30 #include "ether.h"
     31 #include "ethertype.h"
     32 #include "extract.h"			/* must come after interface.h */
     33 
     34 static const char tstr[] = "[|TIPC]";
     35 
     36 /*
     37  * Transparent Inter-Process Communication (TIPC) protocol.
     38  *
     39  *	http://tipc.sourceforge.net/doc/draft-spec-tipc-07.html
     40  *	http://tipc.sourceforge.net/doc/tipc_message_formats.html
     41  */
     42 
     43 #define TIPC_USER_LOW_IMPORTANCE	0
     44 #define TIPC_USER_MEDIUM_IMPORTANCE	1
     45 #define TIPC_USER_HIGH_IMPORTANCE	2
     46 #define TIPC_USER_CRITICAL_IMPORTANCE	3
     47 #define TIPC_USER_BCAST_PROTOCOL	5
     48 #define TIPC_USER_MSG_BUNDLER		6
     49 #define TIPC_USER_LINK_PROTOCOL		7
     50 #define TIPC_USER_CONN_MANAGER		8
     51 #define TIPC_USER_CHANGEOVER_PROTOCOL	10
     52 #define TIPC_USER_NAME_DISTRIBUTOR	11
     53 #define TIPC_USER_MSG_FRAGMENTER	12
     54 #define TIPC_USER_LINK_CONFIG		13
     55 
     56 #define TIPC_CONN_MSG			0
     57 #define TIPC_DIRECT_MSG			1
     58 #define TIPC_NAMED_MSG			2
     59 #define TIPC_MCAST_MSG			3
     60 
     61 #define TIPC_ZONE(addr)		(((addr) >> 24) & 0xFF)
     62 #define TIPC_CLUSTER(addr)	(((addr) >> 12) & 0xFFF)
     63 #define TIPC_NODE(addr)		(((addr) >> 0) & 0xFFF)
     64 
     65 struct tipc_pkthdr {
     66 	uint32_t w0;
     67 	uint32_t w1;
     68 };
     69 
     70 #define TIPC_VER(w0)		(((w0) >> 29) & 0x07)
     71 #define TIPC_USER(w0)		(((w0) >> 25) & 0x0F)
     72 #define TIPC_HSIZE(w0)		(((w0) >> 21) & 0x0F)
     73 #define TIPC_MSIZE(w0)		(((w0) >> 0) & 0xFFFF)
     74 #define TIPC_MTYPE(w1)		(((w1) >> 29) & 0x07)
     75 #define TIPC_BROADCAST_ACK(w1)	(((w1) >> 0) & 0xFFFF)
     76 #define TIPC_LINK_ACK(w2)	(((w2) >> 16) & 0xFFFF)
     77 #define TIPC_LINK_SEQ(w2)	(((w2) >> 0) & 0xFFFF)
     78 
     79 static const struct tok tipcuser_values[] = {
     80     { TIPC_USER_LOW_IMPORTANCE,      "Low Importance Data payload" },
     81     { TIPC_USER_MEDIUM_IMPORTANCE,   "Medium Importance Data payload" },
     82     { TIPC_USER_HIGH_IMPORTANCE,     "High Importance Data payload" },
     83     { TIPC_USER_CRITICAL_IMPORTANCE, "Critical Importance Data payload" },
     84     { TIPC_USER_BCAST_PROTOCOL,      "Broadcast Link Protocol internal" },
     85     { TIPC_USER_MSG_BUNDLER,         "Message Bundler Protocol internal" },
     86     { TIPC_USER_LINK_PROTOCOL,       "Link State Protocol internal" },
     87     { TIPC_USER_CONN_MANAGER,        "Connection Manager internal" },
     88     { TIPC_USER_CHANGEOVER_PROTOCOL, "Link Changeover Protocol internal" },
     89     { TIPC_USER_NAME_DISTRIBUTOR,    "Name Table Update Protocol internal" },
     90     { TIPC_USER_MSG_FRAGMENTER,      "Message Fragmentation Protocol internal" },
     91     { TIPC_USER_LINK_CONFIG,         "Neighbor Detection Protocol internal" },
     92     { 0, NULL }
     93 };
     94 
     95 static const struct tok tipcmtype_values[] = {
     96     { TIPC_CONN_MSG,   "CONN_MSG" },
     97     { TIPC_DIRECT_MSG, "MCAST_MSG" },
     98     { TIPC_NAMED_MSG,  "NAMED_MSG" },
     99     { TIPC_MCAST_MSG,  "DIRECT_MSG" },
    100     { 0, NULL }
    101 };
    102 
    103 static const struct tok tipc_linkconf_mtype_values[] = {
    104     { 0,   "Link request" },
    105     { 1,   "Link response" },
    106     { 0, NULL }
    107 };
    108 
    109 struct payload_tipc_pkthdr {
    110 	uint32_t w0;
    111 	uint32_t w1;
    112 	uint32_t w2;
    113 	uint32_t prev_node;
    114 	uint32_t orig_port;
    115 	uint32_t dest_port;
    116 	uint32_t orig_node;
    117 	uint32_t dest_node;
    118 	uint32_t name_type;
    119 	uint32_t w9;
    120 	uint32_t wA;
    121 };
    122 
    123 struct  internal_tipc_pkthdr {
    124 	uint32_t w0;
    125 	uint32_t w1;
    126 	uint32_t w2;
    127 	uint32_t prev_node;
    128 	uint32_t w4;
    129 	uint32_t w5;
    130 	uint32_t orig_node;
    131 	uint32_t dest_node;
    132 	uint32_t trans_seq;
    133 	uint32_t w9;
    134 };
    135 
    136 #define TIPC_SEQ_GAP(w1)	(((w1) >> 16) & 0x1FFF)
    137 #define TIPC_BC_GAP_AFTER(w2)	(((w2) >> 16) & 0xFFFF)
    138 #define TIPC_BC_GAP_TO(w2)	(((w2) >> 0) & 0xFFFF)
    139 #define TIPC_LAST_SENT_FRAG(w4)	(((w4) >> 16) & 0xFFFF)
    140 #define TIPC_NEXT_SENT_FRAG(w4)	(((w4) >> 0) & 0xFFFF)
    141 #define TIPC_SESS_NO(w5)	(((w5) >> 16) & 0xFFFF)
    142 #define TIPC_MSG_CNT(w9)	(((w9) >> 16) & 0xFFFF)
    143 #define TIPC_LINK_TOL(w9)	(((w9) >> 0) & 0xFFFF)
    144 
    145 struct link_conf_tipc_pkthdr {
    146 	uint32_t w0;
    147 	uint32_t w1;
    148 	uint32_t dest_domain;
    149 	uint32_t prev_node;
    150 	uint32_t ntwrk_id;
    151 	uint32_t w5;
    152 	uint8_t media_address[16];
    153 };
    154 
    155 #define TIPC_NODE_SIG(w1)	(((w1) >> 0) & 0xFFFF)
    156 #define TIPC_MEDIA_ID(w5)	(((w5) >> 0) & 0xFF)
    157 
    158 static void
    159 print_payload(netdissect_options *ndo, const struct payload_tipc_pkthdr *ap)
    160 {
    161 	uint32_t w0, w1, w2;
    162 	u_int user;
    163 	u_int hsize;
    164 	u_int msize;
    165 	u_int mtype;
    166 	u_int broadcast_ack;
    167 	u_int link_ack;
    168 	u_int link_seq;
    169 	u_int prev_node;
    170 	u_int orig_port;
    171 	u_int dest_port;
    172 	u_int orig_node;
    173 	u_int dest_node;
    174 
    175 	ND_TCHECK(ap->dest_port);
    176 	w0 = EXTRACT_32BITS(&ap->w0);
    177 	user = TIPC_USER(w0);
    178 	hsize = TIPC_HSIZE(w0);
    179 	msize = TIPC_MSIZE(w0);
    180 	w1 = EXTRACT_32BITS(&ap->w1);
    181 	mtype = TIPC_MTYPE(w1);
    182 	prev_node = EXTRACT_32BITS(&ap->prev_node);
    183 	orig_port = EXTRACT_32BITS(&ap->orig_port);
    184 	dest_port = EXTRACT_32BITS(&ap->dest_port);
    185 	if (hsize <= 6) {
    186 		ND_PRINT((ndo, "TIPC v%u.0 %u.%u.%u:%u > %u, headerlength %u bytes, MessageSize %u bytes, %s, messageType %s",
    187 		    TIPC_VER(w0),
    188 		    TIPC_ZONE(prev_node), TIPC_CLUSTER(prev_node), TIPC_NODE(prev_node),
    189 		    orig_port, dest_port,
    190 		    hsize*4, msize,
    191 		    tok2str(tipcuser_values, "unknown", user),
    192 		    tok2str(tipcmtype_values, "Unknown", mtype)));
    193 	} else {
    194 		ND_TCHECK(ap->dest_node);
    195 		orig_node = EXTRACT_32BITS(&ap->orig_node);
    196 		dest_node = EXTRACT_32BITS(&ap->dest_node);
    197 		ND_PRINT((ndo, "TIPC v%u.0 %u.%u.%u:%u > %u.%u.%u:%u, headerlength %u bytes, MessageSize %u bytes, %s, messageType %s",
    198 		    TIPC_VER(w0),
    199 		    TIPC_ZONE(orig_node), TIPC_CLUSTER(orig_node), TIPC_NODE(orig_node),
    200 		    orig_port,
    201 		    TIPC_ZONE(dest_node), TIPC_CLUSTER(dest_node), TIPC_NODE(dest_node),
    202 		    dest_port,
    203 		    hsize*4, msize,
    204 		    tok2str(tipcuser_values, "unknown", user),
    205 		    tok2str(tipcmtype_values, "Unknown", mtype)));
    206 
    207 		if (ndo->ndo_vflag) {
    208 			broadcast_ack = TIPC_BROADCAST_ACK(w1);
    209 			w2 = EXTRACT_32BITS(&ap->w2);
    210 			link_ack = TIPC_LINK_ACK(w2);
    211 			link_seq = TIPC_LINK_SEQ(w2);
    212 			ND_PRINT((ndo, "\n\tPrevious Node %u.%u.%u, Broadcast Ack %u, Link Ack %u, Link Sequence %u",
    213 			    TIPC_ZONE(prev_node), TIPC_CLUSTER(prev_node), TIPC_NODE(prev_node),
    214 			    broadcast_ack, link_ack, link_seq));
    215 		}
    216 	}
    217 	return;
    218 
    219 trunc:
    220 	ND_PRINT((ndo, "%s", tstr));
    221 }
    222 
    223 static void
    224 print_internal(netdissect_options *ndo, const struct internal_tipc_pkthdr *ap)
    225 {
    226 	uint32_t w0, w1, w2, w4, w5, w9;
    227 	u_int user;
    228 	u_int hsize;
    229 	u_int msize;
    230 	u_int mtype;
    231 	u_int seq_gap;
    232 	u_int broadcast_ack;
    233 	u_int bc_gap_after;
    234 	u_int bc_gap_to;
    235 	u_int prev_node;
    236 	u_int last_sent_frag;
    237 	u_int next_sent_frag;
    238 	u_int sess_no;
    239 	u_int orig_node;
    240 	u_int dest_node;
    241 	u_int trans_seq;
    242 	u_int msg_cnt;
    243 	u_int link_tol;
    244 
    245 	ND_TCHECK(ap->dest_node);
    246 	w0 = EXTRACT_32BITS(&ap->w0);
    247 	user = TIPC_USER(w0);
    248 	hsize = TIPC_HSIZE(w0);
    249 	msize = TIPC_MSIZE(w0);
    250 	w1 = EXTRACT_32BITS(&ap->w1);
    251 	mtype = TIPC_MTYPE(w1);
    252 	orig_node = EXTRACT_32BITS(&ap->orig_node);
    253 	dest_node = EXTRACT_32BITS(&ap->dest_node);
    254 	ND_PRINT((ndo, "TIPC v%u.0 %u.%u.%u > %u.%u.%u, headerlength %u bytes, MessageSize %u bytes, %s, messageType %s (0x%08x)",
    255 	    TIPC_VER(w0),
    256 	    TIPC_ZONE(orig_node), TIPC_CLUSTER(orig_node), TIPC_NODE(orig_node),
    257 	    TIPC_ZONE(dest_node), TIPC_CLUSTER(dest_node), TIPC_NODE(dest_node),
    258 	    hsize*4, msize,
    259 	    tok2str(tipcuser_values, "unknown", user),
    260 	    tok2str(tipcmtype_values, "Unknown", mtype), w1));
    261 
    262 	if (ndo->ndo_vflag) {
    263 		ND_TCHECK(*ap);
    264 		seq_gap = TIPC_SEQ_GAP(w1);
    265 		broadcast_ack = TIPC_BROADCAST_ACK(w1);
    266 		w2 = EXTRACT_32BITS(&ap->w2);
    267 		bc_gap_after = TIPC_BC_GAP_AFTER(w2);
    268 		bc_gap_to = TIPC_BC_GAP_TO(w2);
    269 		prev_node = EXTRACT_32BITS(&ap->prev_node);
    270 		w4 = EXTRACT_32BITS(&ap->w4);
    271 		last_sent_frag = TIPC_LAST_SENT_FRAG(w4);
    272 		next_sent_frag = TIPC_NEXT_SENT_FRAG(w4);
    273 		w5 = EXTRACT_32BITS(&ap->w5);
    274 		sess_no = TIPC_SESS_NO(w5);
    275 		trans_seq = EXTRACT_32BITS(&ap->trans_seq);
    276 		w9 = EXTRACT_32BITS(&ap->w9);
    277 		msg_cnt = TIPC_MSG_CNT(w9);
    278 		link_tol = TIPC_LINK_TOL(w9);
    279 		ND_PRINT((ndo, "\n\tPrevious Node %u.%u.%u, Session No. %u, Broadcast Ack %u, Sequence Gap %u,  Broadcast Gap After %u, Broadcast Gap To %u, Last Sent Packet No. %u, Next sent Packet No. %u, Transport Sequence %u, msg_count %u, Link Tolerance %u",
    280 		    TIPC_ZONE(prev_node), TIPC_CLUSTER(prev_node), TIPC_NODE(prev_node),
    281 		    sess_no, broadcast_ack, seq_gap, bc_gap_after, bc_gap_to,
    282 		    last_sent_frag, next_sent_frag, trans_seq, msg_cnt,
    283 		    link_tol));
    284 	}
    285 	return;
    286 
    287 trunc:
    288 	ND_PRINT((ndo, "%s", tstr));
    289 }
    290 
    291 static void
    292 print_link_conf(netdissect_options *ndo, const struct link_conf_tipc_pkthdr *ap)
    293 {
    294 	uint32_t w0, w1, w5;
    295 	u_int user;
    296 	u_int hsize;
    297 	u_int msize;
    298 	u_int mtype;
    299 	u_int node_sig;
    300 	u_int prev_node;
    301 	u_int dest_domain;
    302 	u_int ntwrk_id;
    303 	u_int media_id;
    304 
    305 	ND_TCHECK(ap->prev_node);
    306 	w0 = EXTRACT_32BITS(&ap->w0);
    307 	user = TIPC_USER(w0);
    308 	hsize = TIPC_HSIZE(w0);
    309 	msize = TIPC_MSIZE(w0);
    310 	w1 = EXTRACT_32BITS(&ap->w1);
    311 	mtype = TIPC_MTYPE(w1);
    312 	dest_domain = EXTRACT_32BITS(&ap->dest_domain);
    313 	prev_node = EXTRACT_32BITS(&ap->prev_node);
    314 
    315 	ND_PRINT((ndo, "TIPC v%u.0 %u.%u.%u > %u.%u.%u, headerlength %u bytes, MessageSize %u bytes, %s, messageType %s",
    316 	    TIPC_VER(w0),
    317 	    TIPC_ZONE(prev_node), TIPC_CLUSTER(prev_node), TIPC_NODE(prev_node),
    318 	    TIPC_ZONE(dest_domain), TIPC_CLUSTER(dest_domain), TIPC_NODE(dest_domain),
    319 	    hsize*4, msize,
    320 	    tok2str(tipcuser_values, "unknown", user),
    321 	    tok2str(tipc_linkconf_mtype_values, "Unknown", mtype)));
    322 	if (ndo->ndo_vflag) {
    323 		ND_TCHECK(ap->w5);
    324 		node_sig = TIPC_NODE_SIG(w1);
    325 		ntwrk_id = EXTRACT_32BITS(&ap->ntwrk_id);
    326 		w5 = EXTRACT_32BITS(&ap->w5);
    327 		media_id = TIPC_MEDIA_ID(w5);
    328 		ND_PRINT((ndo, "\n\tNodeSignature %u, network_id %u, media_id %u",
    329 		    node_sig, ntwrk_id, media_id));
    330 	}
    331 	return;
    332 
    333 trunc:
    334 	ND_PRINT((ndo, "%s", tstr));
    335 }
    336 
    337 void
    338 tipc_print(netdissect_options *ndo, const u_char *bp, u_int length _U_,
    339     u_int caplen _U_)
    340 {
    341 	const struct tipc_pkthdr *ap;
    342 	uint32_t w0;
    343 	u_int user;
    344 
    345 	ap = (struct tipc_pkthdr *)bp;
    346 	ND_TCHECK(ap->w0);
    347 	w0 = EXTRACT_32BITS(&ap->w0);
    348 	user = TIPC_USER(w0);
    349 
    350 	switch (user)
    351 	{
    352 		case TIPC_USER_LOW_IMPORTANCE:
    353 		case TIPC_USER_MEDIUM_IMPORTANCE:
    354 		case TIPC_USER_HIGH_IMPORTANCE:
    355 		case TIPC_USER_CRITICAL_IMPORTANCE:
    356 		case TIPC_USER_NAME_DISTRIBUTOR:
    357 		case TIPC_USER_CONN_MANAGER:
    358 			print_payload(ndo, (struct payload_tipc_pkthdr *)bp);
    359 			break;
    360 
    361 		case TIPC_USER_LINK_CONFIG:
    362 			print_link_conf(ndo, (struct link_conf_tipc_pkthdr *)bp);
    363 			break;
    364 
    365 		case TIPC_USER_BCAST_PROTOCOL:
    366 		case TIPC_USER_MSG_BUNDLER:
    367 		case TIPC_USER_LINK_PROTOCOL:
    368 		case TIPC_USER_CHANGEOVER_PROTOCOL:
    369 		case TIPC_USER_MSG_FRAGMENTER:
    370 			print_internal(ndo, (struct internal_tipc_pkthdr *)bp);
    371 			break;
    372 
    373 	}
    374 	return;
    375 
    376 trunc:
    377 	ND_PRINT((ndo, "%s", tstr));
    378 }
    379 
    380 /*
    381  * Local Variables:
    382  * c-style: bsd
    383  * End:
    384  */
    385 
    386