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wireshark/packet-nlm.c
Ronnie Sahlberg 3143c595a4 Option to make filtering on nfs fhandles stateful. 
When this ption is enabled in Protocols/NFS displayfilters for fhandle fields
such as nfs.fh.{hash|name|full_name} will find both the request and matching
response packets even if the fhandle is only present in one of the packets.
The option supports all NFS and related protocols which use nfs fhandles
including async NLM.
The option will not work with nfs packets containing multiple fhandles in
one PDU, nor will it work if tcp collapses multiple segments/pdus into
one larger segment.
It only works for async NLM if one first enables the MSG/RES stateful
matching for async NLM.

svn path=/trunk/; revision=5515
2002-05-21 10:17:30 +00:00

1144 lines
31 KiB
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/* packet-nlm.c
* Routines for nlm dissection
*
* $Id: packet-nlm.c,v 1.27 2002/05/21 10:17:27 sahlberg Exp $
*
* Ethereal - Network traffic analyzer
* By Gerald Combs <gerald@ethereal.com>
* Copyright 1998 Gerald Combs
*
* Copied from packet-mount.c
*
* 2001-JAN Ronnie Sahlberg <See AUTHORS for email>
* Updates to version 1 of the protocol.
* Added version 3 of the protocol.
* Added version 4 of the protocol.
*
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#include "packet-rpc.h"
#include "packet-nfs.h"
#include "packet-nlm.h"
#include "prefs.h"
#include <string.h>
/*
* NFS Lock Manager protocol specs can only be found in actual
* implementations or in the nice book:
* Brent Callaghan: "NFS Illustrated", Addison-Wesley, ISBN 0-201-32570-5
* which I use here as reference (BC).
*
* They can also be found if you go to
*
* http://www.opengroup.org/publications/catalog/c702.htm
*
* and follow the links to the HTML version of the document.
*/
static int proto_nlm = -1;
static int hf_nlm_cookie = -1;
static int hf_nlm_block = -1;
static int hf_nlm_exclusive = -1;
static int hf_nlm_lock = -1;
static int hf_nlm_lock_caller_name = -1;
static int hf_nlm_lock_owner = -1;
static int hf_nlm_lock_svid = -1;
static int hf_nlm_lock_l_offset = -1;
static int hf_nlm_lock_l_offset64 = -1;
static int hf_nlm_lock_l_len = -1;
static int hf_nlm_lock_l_len64 = -1;
static int hf_nlm_reclaim = -1;
static int hf_nlm_stat = -1;
static int hf_nlm_state = -1;
static int hf_nlm_test_stat = -1;
static int hf_nlm_test_stat_stat = -1;
static int hf_nlm_holder = -1;
static int hf_nlm_share = -1;
static int hf_nlm_share_mode = -1;
static int hf_nlm_share_access = -1;
static int hf_nlm_share_name = -1;
static int hf_nlm_sequence = -1;
static int hf_nlm_request_in = -1;
static int hf_nlm_reply_in = -1;
static int hf_nlm_time = -1;
static gint ett_nlm = -1;
static gint ett_nlm_lock = -1;
/*
* stuff to match MSG and RES packets for async NLM
*/
static gboolean nlm_match_msgres = FALSE;
static GHashTable *nlm_msg_res_unmatched = NULL;
static GHashTable *nlm_msg_res_matched = NULL;
/* XXX when matching the packets we should really check the conversation (only address
NOT ports) and command type as well. I am lazy and thinks the cookie itself is
good enough for now
*/
typedef struct _nlm_msg_res_unmatched_data {
int req_frame;
nstime_t ns;
int cookie_len;
char *cookie;
} nlm_msg_res_unmatched_data;
typedef struct _nlm_msg_res_matched_data {
int req_frame;
int rep_frame;
nstime_t ns;
} nlm_msg_res_matched_data;
static gboolean
nlm_msg_res_unmatched_free_all(gpointer key_arg _U_, gpointer value, gpointer user_data _U_)
{
nlm_msg_res_unmatched_data *umd = (nlm_msg_res_unmatched_data *)value;
g_free(umd->cookie);
g_free(umd);
return TRUE;
}
static gboolean
nlm_msg_res_matched_free_all(gpointer key_arg _U_, gpointer value, gpointer user_data _U_)
{
nlm_msg_res_matched_data *md = (nlm_msg_res_matched_data *)value;
g_free(md);
return TRUE;
}
static guint
nlm_msg_res_unmatched_hash(gconstpointer k)
{
nlm_msg_res_unmatched_data *umd = (nlm_msg_res_unmatched_data *)k;
guint8 hash=0;
int i;
for(i=0;i<umd->cookie_len;i++){
hash^=umd->cookie[i];
}
return hash;
}
static guint
nlm_msg_res_matched_hash(gconstpointer k)
{
guint hash = (guint)k;
return hash;
}
static gint
nlm_msg_res_unmatched_equal(gconstpointer k1, gconstpointer k2)
{
nlm_msg_res_unmatched_data *umd1 = (nlm_msg_res_unmatched_data *)k1;
nlm_msg_res_unmatched_data *umd2 = (nlm_msg_res_unmatched_data *)k2;
if(umd1->cookie_len!=umd2->cookie_len){
return 0;
}
return( !memcmp(umd1->cookie, umd2->cookie, umd1->cookie_len));
}
static gint
nlm_msg_res_matched_equal(gconstpointer k1, gconstpointer k2)
{
guint mk1 = (guint)k1;
guint mk2 = (guint)k2;
return( mk1==mk2 );
}
static void
nlm_msg_res_match_init(void)
{
if(nlm_msg_res_unmatched != NULL){
g_hash_table_foreach_remove(nlm_msg_res_unmatched,
nlm_msg_res_unmatched_free_all, NULL);
} else {
nlm_msg_res_unmatched=g_hash_table_new(nlm_msg_res_unmatched_hash,
nlm_msg_res_unmatched_equal);
}
if(nlm_msg_res_matched != NULL){
g_hash_table_foreach_remove(nlm_msg_res_matched,
nlm_msg_res_matched_free_all, NULL);
} else {
nlm_msg_res_matched=g_hash_table_new(nlm_msg_res_matched_hash,
nlm_msg_res_matched_equal);
}
}
static void
nlm_print_msgres_reply(packet_info *pinfo, proto_tree *tree, tvbuff_t *tvb)
{
nlm_msg_res_matched_data *md;
md=g_hash_table_lookup(nlm_msg_res_matched, (gconstpointer)pinfo->fd->num);
if(md){
nstime_t ns;
proto_tree_add_uint(tree, hf_nlm_request_in, tvb, 0, 0, md->req_frame);
ns.secs= pinfo->fd->abs_secs-md->ns.secs;
ns.nsecs=pinfo->fd->abs_usecs*1000-md->ns.nsecs;
if(ns.nsecs<0){
ns.nsecs+=1000000000;
ns.secs--;
}
proto_tree_add_time(tree, hf_nlm_time, tvb, 0, 0, &ns);
}
}
static void
nlm_print_msgres_request(packet_info *pinfo, proto_tree *tree, tvbuff_t *tvb)
{
nlm_msg_res_matched_data *md;
md=g_hash_table_lookup(nlm_msg_res_matched, (gconstpointer)pinfo->fd->num);
if(md){
proto_tree_add_uint(tree, hf_nlm_reply_in, tvb, 0, 0, md->rep_frame);
}
}
static void
nlm_match_fhandle_reply(packet_info *pinfo, proto_tree *tree)
{
nlm_msg_res_matched_data *md;
md=g_hash_table_lookup(nlm_msg_res_matched, (gconstpointer)pinfo->fd->num);
if(md && md->rep_frame){
nfs_fhandle_data_t *fhd;
fhd=(nfs_fhandle_data_t *)g_hash_table_lookup(
nfs_fhandle_frame_table,
(gconstpointer)md->req_frame);
if(fhd){
dissect_fhandle_hidden(pinfo,
tree, fhd);
}
}
}
static void
nlm_match_fhandle_request(packet_info *pinfo, proto_tree *tree)
{
nlm_msg_res_matched_data *md;
md=g_hash_table_lookup(nlm_msg_res_matched, (gconstpointer)pinfo->fd->num);
if(md && md->rep_frame){
nfs_fhandle_data_t *fhd;
fhd=(nfs_fhandle_data_t *)g_hash_table_lookup(
nfs_fhandle_frame_table,
(gconstpointer)md->rep_frame);
if(fhd){
dissect_fhandle_hidden(pinfo,
tree, fhd);
}
}
}
static void
nlm_register_unmatched_res(packet_info *pinfo, tvbuff_t *tvb, int offset)
{
nlm_msg_res_unmatched_data umd;
nlm_msg_res_unmatched_data *old_umd;
umd.cookie_len=tvb_get_ntohl(tvb, offset);
umd.cookie=(char *)tvb_get_ptr(tvb, offset+4, -1);
/* have we seen this cookie before? */
old_umd=g_hash_table_lookup(nlm_msg_res_unmatched, (gconstpointer)&umd);
if(old_umd){
nlm_msg_res_matched_data *md;
md=g_malloc(sizeof(nlm_msg_res_matched_data));
md->req_frame=old_umd->req_frame;
md->rep_frame=pinfo->fd->num;
md->ns=old_umd->ns;
g_hash_table_insert(nlm_msg_res_matched, (gpointer)md->req_frame, (gpointer)md);
g_hash_table_insert(nlm_msg_res_matched, (gpointer)md->rep_frame, (gpointer)md);
g_hash_table_remove(nlm_msg_res_unmatched, (gconstpointer)old_umd);
g_free(old_umd->cookie);
g_free(old_umd);
}
}
static void
nlm_register_unmatched_msg(packet_info *pinfo, tvbuff_t *tvb, int offset)
{
nlm_msg_res_unmatched_data *umd;
nlm_msg_res_unmatched_data *old_umd;
/* allocate and build the unmatched structure for this request */
umd=g_malloc(sizeof(nlm_msg_res_unmatched_data));
umd->req_frame=pinfo->fd->num;
umd->ns.secs=pinfo->fd->abs_secs;
umd->ns.nsecs=pinfo->fd->abs_usecs*1000;
umd->cookie_len=tvb_get_ntohl(tvb, offset);
umd->cookie=g_malloc(umd->cookie_len);
tvb_memcpy(tvb, (guint8 *)umd->cookie, offset+4, umd->cookie_len);
/* remove any old duplicates */
old_umd=g_hash_table_lookup(nlm_msg_res_unmatched, (gconstpointer)umd);
if(old_umd){
g_hash_table_remove(nlm_msg_res_unmatched, (gconstpointer)old_umd);
g_free(old_umd->cookie);
g_free(old_umd);
}
/* add new one */
g_hash_table_insert(nlm_msg_res_unmatched, (gpointer)umd, (gpointer)umd);
}
static const value_string names_nlm_stats[] =
{
/* NLM_GRANTED is the function number 5 and the state code 0.
* So we use for the state the postfix _S.
*/
#define NLM_GRANTED_S 0
{ NLM_GRANTED_S, "NLM_GRANTED" },
#define NLM_DENIED 1
{ NLM_DENIED, "NLM_DENIED" },
#define NLM_DENIED_NOLOCKS 2
{ NLM_DENIED_NOLOCKS, "NLM_DENIED_NOLOCKS" },
#define NLM_BLOCKED 3
{ NLM_BLOCKED, "NLM_BLOCKED" },
#define NLM_DENIED_GRACE_PERIOD 4
{ NLM_DENIED_GRACE_PERIOD, "NLM_DENIED_GRACE_PERIOD" },
#define NLM_DEADLCK 5
{ NLM_DEADLCK, "NLM_DEADLCK" },
#define NLM_ROFS 6
{ NLM_ROFS, "NLM_ROFS" },
#define NLM_STALE_FH 7
{ NLM_STALE_FH, "NLM_STALE_FH" },
#define NLM_BIG 8
{ NLM_BIG, "NLM_BIG" },
#define NLM_FAILED 9
{ NLM_FAILED, "NLM_FAILED" },
{ 0, NULL }
};
static const value_string names_fsh_mode[] =
{
#define FSM_DN 0
{ FSM_DN, "deny none" },
#define FSM_DR 1
{ FSM_DR, "deny read" },
#define FSM_DW 2
{ FSM_DW, "deny write" },
#define FSM_DRW 3
{ FSM_DRW, "deny read/write" },
{ 0, NULL }
};
static const value_string names_fsh_access[] =
{
#define FSA_NONE 0
{ FSA_NONE, "no access" },
#define FSA_R 1
{ FSA_R, "read-only" },
#define FSA_W 2
{ FSA_W, "write-only" },
#define FSA_RW 3
{ FSA_RW, "read/write" },
{ 0, NULL }
};
/* **************************** */
/* generic dissecting functions */
/* **************************** */
static int
dissect_lock(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, int version, int offset)
{
proto_item* lock_item = NULL;
proto_tree* lock_tree = NULL;
if (tree) {
lock_item = proto_tree_add_item(tree, hf_nlm_lock, tvb,
offset, -1, FALSE);
if (lock_item)
lock_tree = proto_item_add_subtree(lock_item, ett_nlm_lock);
}
offset = dissect_rpc_string(tvb,lock_tree,
hf_nlm_lock_caller_name, offset, NULL);
offset = dissect_nfs_fh3(tvb, offset, pinfo, lock_tree,"fh");
offset = dissect_rpc_data(tvb, lock_tree, hf_nlm_lock_owner, offset);
offset = dissect_rpc_uint32(tvb, lock_tree, hf_nlm_lock_svid, offset);
if (version == 4) {
offset = dissect_rpc_uint64(tvb, lock_tree, hf_nlm_lock_l_offset64, offset);
offset = dissect_rpc_uint64(tvb, lock_tree, hf_nlm_lock_l_len64, offset);
}
else {
offset = dissect_rpc_uint32(tvb, lock_tree, hf_nlm_lock_l_offset, offset);
offset = dissect_rpc_uint32(tvb, lock_tree, hf_nlm_lock_l_len, offset);
}
return offset;
}
static int
dissect_nlm_test(tvbuff_t *tvb, int offset, packet_info *pinfo,
proto_tree *tree, int version)
{
if(nlm_match_msgres){
rpc_call_info_value *rpc_call=pinfo->private_data;
if(rpc_call->proc==6){ /* NLM_TEST_MSG */
if( (!pinfo->fd->flags.visited) ){
nlm_register_unmatched_msg(pinfo, tvb, offset);
} else {
nlm_print_msgres_request(pinfo, tree, tvb);
}
/* for the fhandle matching that finds both request and
response packet */
if(nfs_fhandle_reqrep_matching){
nlm_match_fhandle_request(pinfo, tree);
}
}
}
offset = dissect_rpc_data(tvb, tree, hf_nlm_cookie, offset);
dissect_rpc_bool(tvb, tree, hf_nlm_exclusive, offset);
offset += 4;
offset = dissect_lock(tvb, pinfo, tree, version, offset);
return offset;
}
static int
dissect_nlm_lock(tvbuff_t *tvb, int offset, packet_info *pinfo,
proto_tree *tree,int version)
{
if(nlm_match_msgres){
rpc_call_info_value *rpc_call=pinfo->private_data;
if(rpc_call->proc==7){ /* NLM_LOCK_MSG */
if( (!pinfo->fd->flags.visited) ){
nlm_register_unmatched_msg(pinfo, tvb, offset);
} else {
nlm_print_msgres_request(pinfo, tree, tvb);
}
/* for the fhandle matching that finds both request and
response packet */
if(nfs_fhandle_reqrep_matching){
nlm_match_fhandle_request(pinfo, tree);
}
}
}
offset = dissect_rpc_data(tvb, tree, hf_nlm_cookie, offset);
offset = dissect_rpc_bool(tvb, tree, hf_nlm_block, offset);
offset = dissect_rpc_bool(tvb, tree, hf_nlm_exclusive, offset);
offset = dissect_lock(tvb, pinfo, tree, version, offset);
offset = dissect_rpc_bool(tvb, tree, hf_nlm_reclaim, offset);
offset = dissect_rpc_uint32(tvb, tree, hf_nlm_state, offset);
return offset;
}
static int
dissect_nlm_cancel(tvbuff_t *tvb, int offset, packet_info *pinfo,
proto_tree *tree,int version)
{
if(nlm_match_msgres){
rpc_call_info_value *rpc_call=pinfo->private_data;
if(rpc_call->proc==8){ /* NLM_CANCEL_MSG */
if( (!pinfo->fd->flags.visited) ){
nlm_register_unmatched_msg(pinfo, tvb, offset);
} else {
nlm_print_msgres_request(pinfo, tree, tvb);
}
/* for the fhandle matching that finds both request and
response packet */
if(nfs_fhandle_reqrep_matching){
nlm_match_fhandle_request(pinfo, tree);
}
}
}
offset = dissect_rpc_data(tvb, tree, hf_nlm_cookie, offset);
offset = dissect_rpc_bool(tvb, tree, hf_nlm_block, offset);
offset = dissect_rpc_bool(tvb, tree, hf_nlm_exclusive, offset);
offset = dissect_lock(tvb, pinfo, tree, version, offset);
return offset;
}
static int
dissect_nlm_unlock(tvbuff_t *tvb, int offset, packet_info *pinfo,
proto_tree *tree,int version)
{
if(nlm_match_msgres){
rpc_call_info_value *rpc_call=pinfo->private_data;
if(rpc_call->proc==9){ /* NLM_UNLOCK_MSG */
if( (!pinfo->fd->flags.visited) ){
nlm_register_unmatched_msg(pinfo, tvb, offset);
} else {
nlm_print_msgres_request(pinfo, tree, tvb);
}
/* for the fhandle matching that finds both request and
response packet */
if(nfs_fhandle_reqrep_matching){
nlm_match_fhandle_request(pinfo, tree);
}
}
}
offset = dissect_rpc_data(tvb, tree, hf_nlm_cookie, offset);
offset = dissect_lock(tvb, pinfo, tree, version, offset);
return offset;
}
static int
dissect_nlm_granted(tvbuff_t *tvb, int offset, packet_info *pinfo,
proto_tree *tree,int version)
{
if(nlm_match_msgres){
rpc_call_info_value *rpc_call=pinfo->private_data;
if(rpc_call->proc==10){ /* NLM_GRANTED_MSG */
if( (!pinfo->fd->flags.visited) ){
nlm_register_unmatched_msg(pinfo, tvb, offset);
} else {
nlm_print_msgres_request(pinfo, tree, tvb);
}
/* for the fhandle matching that finds both request and
response packet */
if(nfs_fhandle_reqrep_matching){
nlm_match_fhandle_request(pinfo, tree);
}
}
}
offset = dissect_rpc_data(tvb, tree, hf_nlm_cookie, offset);
offset = dissect_rpc_bool(tvb, tree, hf_nlm_exclusive, offset);
offset = dissect_lock(tvb, pinfo, tree, version, offset);
return offset;
}
static int
dissect_nlm_test_res(tvbuff_t *tvb, int offset, packet_info *pinfo _U_,
proto_tree *tree,int version)
{
proto_item* lock_item = NULL;
proto_tree* lock_tree = NULL;
if(nlm_match_msgres){
rpc_call_info_value *rpc_call=pinfo->private_data;
if(rpc_call->proc==11){ /* NLM_TEST_RES */
if( (!pinfo->fd->flags.visited) ){
nlm_register_unmatched_res(pinfo, tvb, offset);
} else {
nlm_print_msgres_reply(pinfo, tree, tvb);
}
/* for the fhandle matching that finds both request and
response packet */
if(nfs_fhandle_reqrep_matching){
nlm_match_fhandle_reply(pinfo, tree);
}
}
}
offset = dissect_rpc_data(tvb, tree, hf_nlm_cookie, offset);
if (tree) {
lock_item = proto_tree_add_item(tree, hf_nlm_test_stat, tvb,
offset, -1, FALSE);
if (lock_item)
lock_tree = proto_item_add_subtree(lock_item,
ett_nlm_lock);
}
offset = dissect_rpc_uint32(tvb, lock_tree, hf_nlm_test_stat_stat,
offset);
/* last structure is optional, only supplied for stat==1 (LOCKED) */
if(tvb_reported_length_remaining(tvb, offset) == 0){
return offset;
}
if (tree) {
lock_item = proto_tree_add_item(lock_tree, hf_nlm_holder, tvb,
offset, -1, FALSE);
if (lock_item)
lock_tree = proto_item_add_subtree(lock_item,
ett_nlm_lock);
}
offset = dissect_rpc_bool(tvb, lock_tree, hf_nlm_exclusive,
offset);
offset = dissect_rpc_uint32(tvb, lock_tree, hf_nlm_lock_svid,
offset);
offset = dissect_rpc_data(tvb, lock_tree, hf_nlm_lock_owner,
offset);
if (version == 4) {
offset = dissect_rpc_uint64(tvb, lock_tree,
hf_nlm_lock_l_offset64, offset);
offset = dissect_rpc_uint64(tvb, lock_tree,
hf_nlm_lock_l_len64, offset);
}
else {
offset = dissect_rpc_uint32(tvb, lock_tree,
hf_nlm_lock_l_offset, offset);
offset = dissect_rpc_uint32(tvb, lock_tree,
hf_nlm_lock_l_len, offset);
}
return offset;
}
static int
dissect_nlm_share(tvbuff_t *tvb, int offset, packet_info *pinfo,
proto_tree *tree,int version _U_)
{
proto_item* lock_item = NULL;
proto_tree* lock_tree = NULL;
offset = dissect_rpc_data(tvb, tree, hf_nlm_cookie, offset);
if (tree) {
lock_item = proto_tree_add_item(tree, hf_nlm_share, tvb,
offset, -1, FALSE);
if (lock_item)
lock_tree = proto_item_add_subtree(lock_item,
ett_nlm_lock);
}
offset = dissect_rpc_string(tvb,lock_tree,
hf_nlm_lock_caller_name, offset, NULL);
offset = dissect_nfs_fh3(tvb, offset, pinfo, lock_tree, "fh");
offset = dissect_rpc_data(tvb, lock_tree, hf_nlm_lock_owner, offset);
offset = dissect_rpc_uint32(tvb, lock_tree, hf_nlm_share_mode, offset);
offset = dissect_rpc_uint32(tvb, lock_tree, hf_nlm_share_access, offset);
offset = dissect_rpc_bool(tvb, tree, hf_nlm_reclaim, offset);
return offset;
}
static int
dissect_nlm_shareres(tvbuff_t *tvb, int offset, packet_info *pinfo _U_,
proto_tree *tree, int version _U_)
{
offset = dissect_rpc_data(tvb, tree, hf_nlm_cookie, offset);
offset = dissect_rpc_uint32(tvb, tree, hf_nlm_stat, offset);
offset = dissect_rpc_uint32(tvb, tree, hf_nlm_sequence, offset);
return offset;
}
static int
dissect_nlm_freeall(tvbuff_t *tvb, int offset, packet_info *pinfo _U_,
proto_tree *tree,int version _U_)
{
offset = dissect_rpc_string(tvb,tree,
hf_nlm_share_name, offset, NULL);
offset = dissect_rpc_uint32(tvb, tree, hf_nlm_stat, offset);
return offset;
}
/* RPC functions */
/* This function is identical for all NLM protocol versions (1-4)*/
static int
dissect_nlm_gen_reply(tvbuff_t *tvb, int offset, packet_info *pinfo _U_,
proto_tree *tree)
{
if(nlm_match_msgres){
rpc_call_info_value *rpc_call=pinfo->private_data;
if((rpc_call->proc==12) /* NLM_LOCK_RES */
|| (rpc_call->proc==13) /* NLM_CANCEL_RES */
|| (rpc_call->proc==14) /* NLM_UNLOCK_RES */
|| (rpc_call->proc==15) ){ /* NLM_GRENTED_RES */
if( (!pinfo->fd->flags.visited) ){
nlm_register_unmatched_res(pinfo, tvb, offset);
} else {
nlm_print_msgres_reply(pinfo, tree, tvb);
}
/* for the fhandle matching that finds both request and
response packet */
if(nfs_fhandle_reqrep_matching){
nlm_match_fhandle_reply(pinfo, tree);
}
}
}
offset = dissect_rpc_data(tvb, tree, hf_nlm_cookie, offset);
offset = dissect_rpc_uint32(tvb, tree, hf_nlm_stat, offset);
return offset;
}
static int
dissect_nlm1_test(tvbuff_t *tvb, int offset, packet_info *pinfo,
proto_tree *tree)
{
return dissect_nlm_test(tvb,offset,pinfo,tree,1);
}
static int
dissect_nlm4_test(tvbuff_t *tvb, int offset, packet_info *pinfo,
proto_tree *tree)
{
return dissect_nlm_test(tvb,offset,pinfo,tree,4);
}
static int
dissect_nlm1_lock(tvbuff_t *tvb, int offset, packet_info *pinfo,
proto_tree *tree)
{
return dissect_nlm_lock(tvb,offset,pinfo,tree,1);
}
static int
dissect_nlm4_lock(tvbuff_t *tvb, int offset, packet_info *pinfo,
proto_tree *tree)
{
return dissect_nlm_lock(tvb,offset,pinfo,tree,4);
}
static int
dissect_nlm1_cancel(tvbuff_t *tvb, int offset, packet_info *pinfo,
proto_tree *tree)
{
return dissect_nlm_cancel(tvb,offset,pinfo,tree,1);
}
static int
dissect_nlm4_cancel(tvbuff_t *tvb, int offset, packet_info *pinfo,
proto_tree *tree)
{
return dissect_nlm_cancel(tvb,offset,pinfo,tree,4);
}
static int
dissect_nlm1_unlock(tvbuff_t *tvb, int offset, packet_info *pinfo,
proto_tree *tree)
{
return dissect_nlm_unlock(tvb,offset,pinfo,tree,1);
}
static int
dissect_nlm4_unlock(tvbuff_t *tvb, int offset, packet_info *pinfo,
proto_tree *tree)
{
return dissect_nlm_unlock(tvb,offset,pinfo,tree,4);
}
static int
dissect_nlm1_granted(tvbuff_t *tvb, int offset, packet_info *pinfo,
proto_tree *tree)
{
return dissect_nlm_granted(tvb,offset,pinfo,tree,1);
}
static int
dissect_nlm4_granted(tvbuff_t *tvb, int offset, packet_info *pinfo,
proto_tree *tree)
{
return dissect_nlm_granted(tvb,offset,pinfo,tree,4);
}
static int
dissect_nlm1_test_res(tvbuff_t *tvb, int offset, packet_info *pinfo,
proto_tree *tree)
{
return dissect_nlm_test_res(tvb,offset,pinfo,tree,1);
}
static int
dissect_nlm4_test_res(tvbuff_t *tvb, int offset, packet_info *pinfo,
proto_tree *tree)
{
return dissect_nlm_test_res(tvb,offset,pinfo,tree,4);
}
static int
dissect_nlm3_share(tvbuff_t *tvb, int offset, packet_info *pinfo,
proto_tree *tree)
{
return dissect_nlm_share(tvb,offset,pinfo,tree,3);
}
static int
dissect_nlm4_share(tvbuff_t *tvb, int offset, packet_info *pinfo,
proto_tree *tree)
{
return dissect_nlm_share(tvb,offset,pinfo,tree,4);
}
static int
dissect_nlm3_shareres(tvbuff_t *tvb, int offset, packet_info *pinfo,
proto_tree *tree)
{
return dissect_nlm_shareres(tvb,offset,pinfo,tree,3);
}
static int
dissect_nlm4_shareres(tvbuff_t *tvb, int offset, packet_info *pinfo,
proto_tree *tree)
{
return dissect_nlm_shareres(tvb,offset,pinfo,tree,4);
}
static int
dissect_nlm3_freeall(tvbuff_t *tvb, int offset, packet_info *pinfo,
proto_tree *tree)
{
return dissect_nlm_freeall(tvb,offset,pinfo,tree,3);
}
static int
dissect_nlm4_freeall(tvbuff_t *tvb, int offset, packet_info *pinfo,
proto_tree *tree)
{
return dissect_nlm_freeall(tvb,offset,pinfo,tree,4);
}
/* proc number, "proc name", dissect_request, dissect_reply */
/* NULL as function pointer means: type of arguments is "void". */
/* NLM protocol version 1 */
static const vsff nlm1_proc[] = {
{ NLM_NULL, "NULL",
NULL, NULL },
{ NLM_TEST, "TEST",
dissect_nlm1_test, dissect_nlm1_test_res },
{ NLM_LOCK, "LOCK",
dissect_nlm1_lock, dissect_nlm_gen_reply },
{ NLM_CANCEL, "CANCEL",
dissect_nlm1_cancel, dissect_nlm_gen_reply },
{ NLM_UNLOCK, "UNLOCK",
dissect_nlm1_unlock, dissect_nlm_gen_reply },
{ NLM_GRANTED, "GRANTED",
dissect_nlm1_granted, dissect_nlm_gen_reply },
{ NLM_TEST_MSG, "TEST_MSG",
dissect_nlm1_test, NULL },
{ NLM_LOCK_MSG, "LOCK_MSG",
dissect_nlm1_lock, NULL },
{ NLM_CANCEL_MSG, "CANCEL_MSG",
dissect_nlm1_cancel, NULL },
{ NLM_UNLOCK_MSG, "UNLOCK_MSG",
dissect_nlm1_unlock, NULL },
{ NLM_GRANTED_MSG, "GRANTED_MSG",
dissect_nlm1_granted, NULL },
{ NLM_TEST_RES, "TEST_RES",
dissect_nlm1_test_res, NULL },
{ NLM_LOCK_RES, "LOCK_RES",
dissect_nlm_gen_reply, NULL },
{ NLM_CANCEL_RES, "CANCEL_RES",
dissect_nlm_gen_reply, NULL },
{ NLM_UNLOCK_RES, "UNLOCK_RES",
dissect_nlm_gen_reply, NULL },
{ NLM_GRANTED_RES, "GRANTED_RES",
dissect_nlm_gen_reply, NULL },
{ 0, NULL,
NULL, NULL }
};
/* end of NLM protocol version 1 */
/* NLM protocol version 2 */
static const vsff nlm2_proc[] = {
{ NLM_NULL, "NULL",
NULL, NULL },
{ NLM_TEST, "TEST",
dissect_nlm1_test, dissect_nlm1_test_res },
{ NLM_LOCK, "LOCK",
dissect_nlm1_lock, dissect_nlm_gen_reply },
{ NLM_CANCEL, "CANCEL",
dissect_nlm1_cancel, dissect_nlm_gen_reply },
{ NLM_UNLOCK, "UNLOCK",
dissect_nlm1_unlock, dissect_nlm_gen_reply },
{ NLM_GRANTED, "GRANTED",
dissect_nlm1_granted, dissect_nlm_gen_reply },
{ NLM_TEST_MSG, "TEST_MSG",
dissect_nlm1_test, NULL },
{ NLM_LOCK_MSG, "LOCK_MSG",
dissect_nlm1_lock, NULL },
{ NLM_CANCEL_MSG, "CANCEL_MSG",
dissect_nlm1_cancel, NULL },
{ NLM_UNLOCK_MSG, "UNLOCK_MSG",
dissect_nlm1_unlock, NULL },
{ NLM_GRANTED_MSG, "GRANTED_MSG",
dissect_nlm1_granted, NULL },
{ NLM_TEST_RES, "TEST_RES",
dissect_nlm1_test_res, NULL },
{ NLM_LOCK_RES, "LOCK_RES",
dissect_nlm_gen_reply, NULL },
{ NLM_CANCEL_RES, "CANCEL_RES",
dissect_nlm_gen_reply, NULL },
{ NLM_UNLOCK_RES, "UNLOCK_RES",
dissect_nlm_gen_reply, NULL },
{ NLM_GRANTED_RES, "GRANTED_RES",
dissect_nlm_gen_reply, NULL },
{ 0, NULL,
NULL, NULL }
};
/* end of NLM protocol version 2 */
/* NLM protocol version 3 */
static const vsff nlm3_proc[] = {
{ NLM_NULL, "NULL",
NULL, NULL },
{ NLM_TEST, "TEST",
dissect_nlm1_test, dissect_nlm1_test_res },
{ NLM_LOCK, "LOCK",
dissect_nlm1_lock, dissect_nlm_gen_reply },
{ NLM_CANCEL, "CANCEL",
dissect_nlm1_cancel, dissect_nlm_gen_reply },
{ NLM_UNLOCK, "UNLOCK",
dissect_nlm1_unlock, dissect_nlm_gen_reply },
{ NLM_GRANTED, "GRANTED",
dissect_nlm1_granted, dissect_nlm_gen_reply },
{ NLM_TEST_MSG, "TEST_MSG",
dissect_nlm1_test, NULL },
{ NLM_LOCK_MSG, "LOCK_MSG",
dissect_nlm1_lock, NULL },
{ NLM_CANCEL_MSG, "CANCEL_MSG",
dissect_nlm1_cancel, NULL },
{ NLM_UNLOCK_MSG, "UNLOCK_MSG",
dissect_nlm1_unlock, NULL },
{ NLM_GRANTED_MSG, "GRANTED_MSG",
dissect_nlm1_granted, NULL },
{ NLM_TEST_RES, "TEST_RES",
dissect_nlm1_test_res, NULL },
{ NLM_LOCK_RES, "LOCK_RES",
dissect_nlm_gen_reply, NULL },
{ NLM_CANCEL_RES, "CANCEL_RES",
dissect_nlm_gen_reply, NULL },
{ NLM_UNLOCK_RES, "UNLOCK_RES",
dissect_nlm_gen_reply, NULL },
{ NLM_GRANTED_RES, "GRANTED_RES",
dissect_nlm_gen_reply, NULL },
{ NLM_SHARE, "SHARE",
dissect_nlm3_share, dissect_nlm3_shareres },
{ NLM_UNSHARE, "UNSHARE",
dissect_nlm3_share, dissect_nlm3_shareres },
{ NLM_NM_LOCK, "NM_LOCK",
dissect_nlm1_lock, dissect_nlm_gen_reply },
{ NLM_FREE_ALL, "FREE_ALL",
dissect_nlm3_freeall, NULL },
{ 0, NULL,
NULL, NULL }
};
/* end of NLM protocol version 3 */
/* NLM protocol version 4 */
static const vsff nlm4_proc[] = {
{ NLM_NULL, "NULL",
NULL, NULL },
{ NLM_TEST, "TEST",
dissect_nlm4_test, dissect_nlm4_test_res },
{ NLM_LOCK, "LOCK",
dissect_nlm4_lock, dissect_nlm_gen_reply },
{ NLM_CANCEL, "CANCEL",
dissect_nlm4_cancel, dissect_nlm_gen_reply },
{ NLM_UNLOCK, "UNLOCK",
dissect_nlm4_unlock, dissect_nlm_gen_reply },
{ NLM_GRANTED, "GRANTED",
dissect_nlm4_granted, dissect_nlm_gen_reply },
{ NLM_TEST_MSG, "TEST_MSG",
dissect_nlm4_test, NULL },
{ NLM_LOCK_MSG, "LOCK_MSG",
dissect_nlm4_lock, NULL },
{ NLM_CANCEL_MSG, "CANCEL_MSG",
dissect_nlm4_cancel, NULL },
{ NLM_UNLOCK_MSG, "UNLOCK_MSG",
dissect_nlm4_unlock, NULL },
{ NLM_GRANTED_MSG, "GRANTED_MSG",
dissect_nlm4_granted, NULL },
{ NLM_TEST_RES, "TEST_RES",
dissect_nlm4_test_res, NULL },
{ NLM_LOCK_RES, "LOCK_RES",
dissect_nlm_gen_reply, NULL },
{ NLM_CANCEL_RES, "CANCEL_RES",
dissect_nlm_gen_reply, NULL },
{ NLM_UNLOCK_RES, "UNLOCK_RES",
dissect_nlm_gen_reply, NULL },
{ NLM_GRANTED_RES, "GRANTED_RES",
dissect_nlm_gen_reply, NULL },
{ NLM_SHARE, "SHARE",
dissect_nlm4_share, dissect_nlm4_shareres },
{ NLM_UNSHARE, "UNSHARE",
dissect_nlm4_share, dissect_nlm4_shareres },
{ NLM_NM_LOCK, "NM_LOCK",
dissect_nlm4_lock, dissect_nlm_gen_reply },
{ NLM_FREE_ALL, "FREE_ALL",
dissect_nlm4_freeall, NULL },
{ 0, NULL,
NULL, NULL }
};
/* end of NLM protocol version 4 */
static struct true_false_string yesno = { "Yes", "No" };
void
proto_register_nlm(void)
{
static hf_register_info hf[] = {
{ &hf_nlm_cookie, {
"cookie", "nlm.cookie", FT_BYTES, BASE_DEC,
NULL, 0, "cookie", HFILL }},
{ &hf_nlm_block, {
"block", "nlm.block", FT_BOOLEAN, BASE_NONE,
&yesno, 0, "block", HFILL }},
{ &hf_nlm_exclusive, {
"exclusive", "nlm.exclusive", FT_BOOLEAN, BASE_NONE,
&yesno, 0, "exclusive", HFILL }},
{ &hf_nlm_lock, {
"lock", "nlm.lock", FT_NONE, 0,
NULL, 0, "lock", HFILL }},
{ &hf_nlm_lock_caller_name, {
"caller_name", "nlm.lock.caller_name", FT_STRING, BASE_NONE,
NULL, 0, "caller_name", HFILL }},
{ &hf_nlm_lock_owner, {
"owner", "nlm.lock.owner", FT_BYTES, BASE_DEC,
NULL, 0, "owner", HFILL }},
{ &hf_nlm_lock_svid, {
"svid", "nlm.lock.svid", FT_UINT32, BASE_DEC,
NULL, 0, "svid", HFILL }},
{ &hf_nlm_lock_l_offset64, {
"l_offset", "nlm.lock.l_offset", FT_UINT64, BASE_DEC,
NULL, 0, "l_offset", HFILL }},
{ &hf_nlm_lock_l_offset, {
"l_offset", "nlm.lock.l_offset", FT_UINT32, BASE_DEC,
NULL, 0, "l_offset", HFILL }},
{ &hf_nlm_lock_l_len64, {
"l_len", "nlm.lock.l_len", FT_UINT64, BASE_DEC,
NULL, 0, "l_len", HFILL }},
{ &hf_nlm_lock_l_len, {
"l_len", "nlm.lock.l_len", FT_UINT32, BASE_DEC,
NULL, 0, "l_len", HFILL }},
{ &hf_nlm_reclaim, {
"reclaim", "nlm.reclaim", FT_BOOLEAN, BASE_NONE,
&yesno, 0, "reclaim", HFILL }},
{ &hf_nlm_state, {
"state", "nlm.state", FT_UINT32, BASE_DEC,
NULL, 0, "STATD state", HFILL }},
{ &hf_nlm_stat, {
"stat", "nlm.stat", FT_UINT32, BASE_DEC,
VALS(names_nlm_stats), 0, "stat", HFILL }},
{ &hf_nlm_test_stat, {
"test_stat", "nlm.test_stat", FT_NONE, 0,
NULL, 0, "test_stat", HFILL }},
{ &hf_nlm_test_stat_stat, {
"stat", "nlm.test_stat.stat", FT_UINT32, BASE_DEC,
VALS(names_nlm_stats), 0, "stat", HFILL }},
{ &hf_nlm_holder, {
"holder", "nlm.holder", FT_NONE, 0,
NULL, 0, "holder", HFILL }},
{ &hf_nlm_share, {
"share", "nlm.share", FT_NONE, 0,
NULL, 0, "share", HFILL }},
{ &hf_nlm_share_mode, {
"mode", "nlm.share.mode", FT_UINT32, BASE_DEC,
VALS(names_fsh_mode), 0, "mode", HFILL }},
{ &hf_nlm_share_access, {
"access", "nlm.share.access", FT_UINT32, BASE_DEC,
VALS(names_fsh_access), 0, "access", HFILL }},
{ &hf_nlm_share_name, {
"name", "nlm.share.name", FT_STRING, BASE_NONE,
NULL, 0, "name", HFILL }},
{ &hf_nlm_sequence, {
"sequence", "nlm.sequence", FT_INT32, BASE_DEC,
NULL, 0, "sequence", HFILL }},
{ &hf_nlm_request_in, {
"Request MSG in", "nlm.msg_in", FT_UINT32, BASE_DEC,
NULL, 0, "The RES packet is a response to the MSG in this packet", HFILL }},
{ &hf_nlm_reply_in, {
"Reply RES in", "nlm.res_in", FT_UINT32, BASE_DEC,
NULL, 0, "The response to this MSG packet is in this packet", HFILL }},
{ &hf_nlm_time, {
"Time from request", "nlm.time", FT_RELATIVE_TIME, BASE_NONE,
NULL, 0, "Time between Request and Reply for async NLM calls", HFILL }},
};
static gint *ett[] = {
&ett_nlm,
&ett_nlm_lock,
};
module_t *nlm_module;
proto_nlm = proto_register_protocol("Network Lock Manager Protocol",
"NLM", "nlm");
proto_register_field_array(proto_nlm, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
nlm_module = prefs_register_protocol(proto_nlm, NULL);
prefs_register_bool_preference(nlm_module, "nlm_msg_res_matching",
"Match MSG/RES packets for async NLM",
"Whether the dissector will track and match MSG and RES calls for asynchronous NLM",
&nlm_match_msgres);
register_init_routine(nlm_msg_res_match_init);
}
void
proto_reg_handoff_nlm(void)
{
/* Register the protocol as RPC */
rpc_init_prog(proto_nlm, NLM_PROGRAM, ett_nlm);
/* Register the procedure tables */
rpc_init_proc_table(NLM_PROGRAM, 1, nlm1_proc);
rpc_init_proc_table(NLM_PROGRAM, 2, nlm2_proc);
rpc_init_proc_table(NLM_PROGRAM, 3, nlm3_proc);
rpc_init_proc_table(NLM_PROGRAM, 4, nlm4_proc);
}
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