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abc8c2d61c
tcpdump/print-tipc.c
Francois-Xavier Le Bail abc8c2d61c Remove many (762) now redundant ND_TCHECK_n() calls 
ND_TCHECK_n(e), n in { 1, 2, 3, 4, 8 }.

They are redundant because they are followed by a GET_.*_n(e) call,
same n, same e, which do the bounds check.

Remove unused 'trunc' labels and most associated codes.

Update the outputs of some tests accordingly.
2020-09-06 20:22:29 +02:00

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/*
* Copyright (c) 1988, 1989, 1990, 1991, 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: Transparent Inter-Process Communication (TIPC) protocol printer */
/*
* specification:
* https://web.archive.org/web/20150302152944/http://tipc.sourceforge.net/doc/draft-spec-tipc-07.html
* https://web.archive.org/web/20161025110514/http://tipc.sourceforge.net/doc/tipc_message_formats.html
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "netdissect-stdinc.h"
#include "netdissect.h"
#include "ethertype.h"
#include "extract.h"
#define TIPC_USER_LOW_IMPORTANCE 0
#define TIPC_USER_MEDIUM_IMPORTANCE 1
#define TIPC_USER_HIGH_IMPORTANCE 2
#define TIPC_USER_CRITICAL_IMPORTANCE 3
#define TIPC_USER_BCAST_PROTOCOL 5
#define TIPC_USER_MSG_BUNDLER 6
#define TIPC_USER_LINK_PROTOCOL 7
#define TIPC_USER_CONN_MANAGER 8
#define TIPC_USER_CHANGEOVER_PROTOCOL 10
#define TIPC_USER_NAME_DISTRIBUTOR 11
#define TIPC_USER_MSG_FRAGMENTER 12
#define TIPC_USER_LINK_CONFIG 13
#define TIPC_CONN_MSG 0
#define TIPC_DIRECT_MSG 1
#define TIPC_NAMED_MSG 2
#define TIPC_MCAST_MSG 3
#define TIPC_ZONE(addr) (((addr) >> 24) & 0xFF)
#define TIPC_CLUSTER(addr) (((addr) >> 12) & 0xFFF)
#define TIPC_NODE(addr) (((addr) >> 0) & 0xFFF)
struct tipc_pkthdr {
nd_uint32_t w0;
nd_uint32_t w1;
};
#define TIPC_VER(w0) (((w0) >> 29) & 0x07)
#define TIPC_USER(w0) (((w0) >> 25) & 0x0F)
#define TIPC_HSIZE(w0) (((w0) >> 21) & 0x0F)
#define TIPC_MSIZE(w0) (((w0) >> 0) & 0x1FFFF)
#define TIPC_MTYPE(w1) (((w1) >> 29) & 0x07)
#define TIPC_BROADCAST_ACK(w1) (((w1) >> 0) & 0xFFFF)
#define TIPC_LINK_ACK(w2) (((w2) >> 16) & 0xFFFF)
#define TIPC_LINK_SEQ(w2) (((w2) >> 0) & 0xFFFF)
static const struct tok tipcuser_values[] = {
{ TIPC_USER_LOW_IMPORTANCE, "Low Importance Data payload" },
{ TIPC_USER_MEDIUM_IMPORTANCE, "Medium Importance Data payload" },
{ TIPC_USER_HIGH_IMPORTANCE, "High Importance Data payload" },
{ TIPC_USER_CRITICAL_IMPORTANCE, "Critical Importance Data payload" },
{ TIPC_USER_BCAST_PROTOCOL, "Broadcast Link Protocol internal" },
{ TIPC_USER_MSG_BUNDLER, "Message Bundler Protocol internal" },
{ TIPC_USER_LINK_PROTOCOL, "Link State Protocol internal" },
{ TIPC_USER_CONN_MANAGER, "Connection Manager internal" },
{ TIPC_USER_CHANGEOVER_PROTOCOL, "Link Changeover Protocol internal" },
{ TIPC_USER_NAME_DISTRIBUTOR, "Name Table Update Protocol internal" },
{ TIPC_USER_MSG_FRAGMENTER, "Message Fragmentation Protocol internal" },
{ TIPC_USER_LINK_CONFIG, "Neighbor Detection Protocol internal" },
{ 0, NULL }
};
static const struct tok tipcmtype_values[] = {
{ TIPC_CONN_MSG, "CONN_MSG" },
{ TIPC_DIRECT_MSG, "MCAST_MSG" },
{ TIPC_NAMED_MSG, "NAMED_MSG" },
{ TIPC_MCAST_MSG, "DIRECT_MSG" },
{ 0, NULL }
};
static const struct tok tipc_linkconf_mtype_values[] = {
{ 0, "Link request" },
{ 1, "Link response" },
{ 0, NULL }
};
struct payload_tipc_pkthdr {
nd_uint32_t w0;
nd_uint32_t w1;
nd_uint32_t w2;
nd_uint32_t prev_node;
nd_uint32_t orig_port;
nd_uint32_t dest_port;
nd_uint32_t orig_node;
nd_uint32_t dest_node;
nd_uint32_t name_type;
nd_uint32_t w9;
nd_uint32_t wA;
};
struct internal_tipc_pkthdr {
nd_uint32_t w0;
nd_uint32_t w1;
nd_uint32_t w2;
nd_uint32_t prev_node;
nd_uint32_t w4;
nd_uint32_t w5;
nd_uint32_t orig_node;
nd_uint32_t dest_node;
nd_uint32_t trans_seq;
nd_uint32_t w9;
};
#define TIPC_SEQ_GAP(w1) (((w1) >> 16) & 0x1FFF)
#define TIPC_BC_GAP_AFTER(w2) (((w2) >> 16) & 0xFFFF)
#define TIPC_BC_GAP_TO(w2) (((w2) >> 0) & 0xFFFF)
#define TIPC_LAST_SENT_FRAG(w4) (((w4) >> 16) & 0xFFFF)
#define TIPC_NEXT_SENT_FRAG(w4) (((w4) >> 0) & 0xFFFF)
#define TIPC_SESS_NO(w5) (((w5) >> 16) & 0xFFFF)
#define TIPC_MSG_CNT(w9) (((w9) >> 16) & 0xFFFF)
#define TIPC_LINK_TOL(w9) (((w9) >> 0) & 0xFFFF)
struct link_conf_tipc_pkthdr {
nd_uint32_t w0;
nd_uint32_t w1;
nd_uint32_t dest_domain;
nd_uint32_t prev_node;
nd_uint32_t ntwrk_id;
nd_uint32_t w5;
nd_byte media_address[16];
};
#define TIPC_NODE_SIG(w1) (((w1) >> 0) & 0xFFFF)
#define TIPC_MEDIA_ID(w5) (((w5) >> 0) & 0xFF)
static void
print_payload(netdissect_options *ndo, const struct payload_tipc_pkthdr *ap)
{
uint32_t w0, w1, w2;
u_int user;
u_int hsize;
u_int msize;
u_int mtype;
u_int broadcast_ack;
u_int link_ack;
u_int link_seq;
u_int prev_node;
u_int orig_port;
u_int dest_port;
u_int orig_node;
u_int dest_node;
ND_TCHECK_4(ap->dest_port);
w0 = GET_BE_U_4(ap->w0);
user = TIPC_USER(w0);
hsize = TIPC_HSIZE(w0);
msize = TIPC_MSIZE(w0);
w1 = GET_BE_U_4(ap->w1);
mtype = TIPC_MTYPE(w1);
prev_node = GET_BE_U_4(ap->prev_node);
orig_port = GET_BE_U_4(ap->orig_port);
dest_port = GET_BE_U_4(ap->dest_port);
if (hsize <= 6) {
ND_PRINT("TIPC v%u.0 %u.%u.%u:%u > %u, headerlength %u bytes, MessageSize %u bytes, %s, messageType %s",
TIPC_VER(w0),
TIPC_ZONE(prev_node), TIPC_CLUSTER(prev_node), TIPC_NODE(prev_node),
orig_port, dest_port,
hsize*4, msize,
tok2str(tipcuser_values, "unknown", user),
tok2str(tipcmtype_values, "Unknown", mtype));
} else {
orig_node = GET_BE_U_4(ap->orig_node);
dest_node = GET_BE_U_4(ap->dest_node);
ND_PRINT("TIPC v%u.0 %u.%u.%u:%u > %u.%u.%u:%u, headerlength %u bytes, MessageSize %u bytes, %s, messageType %s",
TIPC_VER(w0),
TIPC_ZONE(orig_node), TIPC_CLUSTER(orig_node), TIPC_NODE(orig_node),
orig_port,
TIPC_ZONE(dest_node), TIPC_CLUSTER(dest_node), TIPC_NODE(dest_node),
dest_port,
hsize*4, msize,
tok2str(tipcuser_values, "unknown", user),
tok2str(tipcmtype_values, "Unknown", mtype));
if (ndo->ndo_vflag) {
broadcast_ack = TIPC_BROADCAST_ACK(w1);
w2 = GET_BE_U_4(ap->w2);
link_ack = TIPC_LINK_ACK(w2);
link_seq = TIPC_LINK_SEQ(w2);
ND_PRINT("\n\tPrevious Node %u.%u.%u, Broadcast Ack %u, Link Ack %u, Link Sequence %u",
TIPC_ZONE(prev_node), TIPC_CLUSTER(prev_node), TIPC_NODE(prev_node),
broadcast_ack, link_ack, link_seq);
}
}
return;
trunc:
nd_print_trunc(ndo);
}
static void
print_internal(netdissect_options *ndo, const struct internal_tipc_pkthdr *ap)
{
uint32_t w0, w1, w2, w4, w5, w9;
u_int user;
u_int hsize;
u_int msize;
u_int mtype;
u_int seq_gap;
u_int broadcast_ack;
u_int bc_gap_after;
u_int bc_gap_to;
u_int prev_node;
u_int last_sent_frag;
u_int next_sent_frag;
u_int sess_no;
u_int orig_node;
u_int dest_node;
u_int trans_seq;
u_int msg_cnt;
u_int link_tol;
ND_TCHECK_4(ap->dest_node);
w0 = GET_BE_U_4(ap->w0);
user = TIPC_USER(w0);
hsize = TIPC_HSIZE(w0);
msize = TIPC_MSIZE(w0);
w1 = GET_BE_U_4(ap->w1);
mtype = TIPC_MTYPE(w1);
orig_node = GET_BE_U_4(ap->orig_node);
dest_node = GET_BE_U_4(ap->dest_node);
ND_PRINT("TIPC v%u.0 %u.%u.%u > %u.%u.%u, headerlength %u bytes, MessageSize %u bytes, %s, messageType %s (0x%08x)",
TIPC_VER(w0),
TIPC_ZONE(orig_node), TIPC_CLUSTER(orig_node), TIPC_NODE(orig_node),
TIPC_ZONE(dest_node), TIPC_CLUSTER(dest_node), TIPC_NODE(dest_node),
hsize*4, msize,
tok2str(tipcuser_values, "unknown", user),
tok2str(tipcmtype_values, "Unknown", mtype), w1);
if (ndo->ndo_vflag) {
ND_TCHECK_SIZE(ap);
seq_gap = TIPC_SEQ_GAP(w1);
broadcast_ack = TIPC_BROADCAST_ACK(w1);
w2 = GET_BE_U_4(ap->w2);
bc_gap_after = TIPC_BC_GAP_AFTER(w2);
bc_gap_to = TIPC_BC_GAP_TO(w2);
prev_node = GET_BE_U_4(ap->prev_node);
w4 = GET_BE_U_4(ap->w4);
last_sent_frag = TIPC_LAST_SENT_FRAG(w4);
next_sent_frag = TIPC_NEXT_SENT_FRAG(w4);
w5 = GET_BE_U_4(ap->w5);
sess_no = TIPC_SESS_NO(w5);
trans_seq = GET_BE_U_4(ap->trans_seq);
w9 = GET_BE_U_4(ap->w9);
msg_cnt = TIPC_MSG_CNT(w9);
link_tol = TIPC_LINK_TOL(w9);
ND_PRINT("\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",
TIPC_ZONE(prev_node), TIPC_CLUSTER(prev_node), TIPC_NODE(prev_node),
sess_no, broadcast_ack, seq_gap, bc_gap_after, bc_gap_to,
last_sent_frag, next_sent_frag, trans_seq, msg_cnt,
link_tol);
}
return;
trunc:
nd_print_trunc(ndo);
}
static void
print_link_conf(netdissect_options *ndo, const struct link_conf_tipc_pkthdr *ap)
{
uint32_t w0, w1, w5;
u_int user;
u_int hsize;
u_int msize;
u_int mtype;
u_int node_sig;
u_int prev_node;
u_int dest_domain;
u_int ntwrk_id;
u_int media_id;
ND_TCHECK_4(ap->prev_node);
w0 = GET_BE_U_4(ap->w0);
user = TIPC_USER(w0);
hsize = TIPC_HSIZE(w0);
msize = TIPC_MSIZE(w0);
w1 = GET_BE_U_4(ap->w1);
mtype = TIPC_MTYPE(w1);
dest_domain = GET_BE_U_4(ap->dest_domain);
prev_node = GET_BE_U_4(ap->prev_node);
ND_PRINT("TIPC v%u.0 %u.%u.%u > %u.%u.%u, headerlength %u bytes, MessageSize %u bytes, %s, messageType %s",
TIPC_VER(w0),
TIPC_ZONE(prev_node), TIPC_CLUSTER(prev_node), TIPC_NODE(prev_node),
TIPC_ZONE(dest_domain), TIPC_CLUSTER(dest_domain), TIPC_NODE(dest_domain),
hsize*4, msize,
tok2str(tipcuser_values, "unknown", user),
tok2str(tipc_linkconf_mtype_values, "Unknown", mtype));
if (ndo->ndo_vflag) {
ND_TCHECK_4(ap->w5);
node_sig = TIPC_NODE_SIG(w1);
ntwrk_id = GET_BE_U_4(ap->ntwrk_id);
w5 = GET_BE_U_4(ap->w5);
media_id = TIPC_MEDIA_ID(w5);
ND_PRINT("\n\tNodeSignature %u, network_id %u, media_id %u",
node_sig, ntwrk_id, media_id);
}
return;
trunc:
nd_print_trunc(ndo);
}
void
tipc_print(netdissect_options *ndo, const u_char *bp, u_int length _U_,
u_int caplen _U_)
{
const struct tipc_pkthdr *ap;
uint32_t w0;
u_int user;
ndo->ndo_protocol = "tipc";
ap = (const struct tipc_pkthdr *)bp;
w0 = GET_BE_U_4(ap->w0);
user = TIPC_USER(w0);
switch (user)
{
case TIPC_USER_LOW_IMPORTANCE:
case TIPC_USER_MEDIUM_IMPORTANCE:
case TIPC_USER_HIGH_IMPORTANCE:
case TIPC_USER_CRITICAL_IMPORTANCE:
case TIPC_USER_NAME_DISTRIBUTOR:
case TIPC_USER_CONN_MANAGER:
print_payload(ndo, (const struct payload_tipc_pkthdr *)bp);
break;
case TIPC_USER_LINK_CONFIG:
print_link_conf(ndo, (const struct link_conf_tipc_pkthdr *)bp);
break;
case TIPC_USER_BCAST_PROTOCOL:
case TIPC_USER_MSG_BUNDLER:
case TIPC_USER_LINK_PROTOCOL:
case TIPC_USER_CHANGEOVER_PROTOCOL:
case TIPC_USER_MSG_FRAGMENTER:
print_internal(ndo, (const struct internal_tipc_pkthdr *)bp);
break;
}
}
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