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wireshark/epan/dissectors/packet-pcnfsd.c
Jeff Morriss 689e8bd855 From http://bugs.wireshark.org/bugzilla/show_bug.cgi?id=1539 : 
Hexadecimal and octal are unsigned.  Don't let dissectors register signed
fields (FT_INT*) to be displayed in hexadecimal (including HEX_DEC and DEC_HEX)
or octal.  Fix dissectors that do that mostly by changing the fields to
unsigned though in PANA it appears the fields are meant to be signed so
change those fields to be displayed in decimal.

This fixes an assertion crash in hfinfo_numeric_format() if/when someone tries
to create a filter using one of these mixed signed/unsigned fields (because
that routine does not know how to present the user with a signed value in
hex).

Also add FT_*INT64 to the "make sure it's not BASE_NONE" check.

svn path=/trunk/; revision=24643
2008-03-15 22:41:57 +00:00

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/* packet-pcnfsd.c
* Routines for PCNFSD dissection
*
* $Id$
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* Copied from packet-ypbind.c
*
* 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.
*/
/*
Protocol information comes from the book
"NFS Illustrated" by Brent Callaghan, ISBN 0-201-32570-5
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
#include "packet-rpc.h"
#include "packet-pcnfsd.h"
static int proto_pcnfsd = -1;
static int hf_pcnfsd_procedure_v1 = -1;
static int hf_pcnfsd_procedure_v2 = -1;
static int hf_pcnfsd_auth_client = -1;
static int hf_pcnfsd_auth_ident_obscure = -1;
static int hf_pcnfsd_auth_ident_clear = -1;
static int hf_pcnfsd_auth_password_obscure = -1;
static int hf_pcnfsd_auth_password_clear = -1;
static int hf_pcnfsd_comment = -1;
static int hf_pcnfsd_status = -1;
static int hf_pcnfsd_uid = -1;
static int hf_pcnfsd_gid = -1;
static int hf_pcnfsd_gids_count = -1;
static int hf_pcnfsd_homedir = -1;
static int hf_pcnfsd_def_umask = -1;
static int hf_pcnfsd_username = -1;
static gint ett_pcnfsd = -1;
static gint ett_pcnfsd_auth_ident = -1;
static gint ett_pcnfsd_auth_password = -1;
static gint ett_pcnfsd_gids = -1;
static int
dissect_pcnfsd_username(tvbuff_t *tvb, int offset, proto_tree *tree)
{
return dissect_rpc_string(tvb, tree, hf_pcnfsd_username, offset, NULL);
}
#define MAP_REQ_UID 0
#define MAP_REQ_GID 1
#define MAP_REQ_UNAME 2
#define MAP_REQ_GNAME 3
static const value_string names_mapreq[] =
{
{ MAP_REQ_UID, "MAP_REQ_UID" },
{ MAP_REQ_GID, "MAP_REQ_GID" },
{ MAP_REQ_UNAME, "MAP_REQ_UNAME" },
{ MAP_REQ_GNAME, "MAP_REQ_GNAME" },
{ 0, NULL }
};
static int
dissect_pcnfsd_mapreq(tvbuff_t *tvb, int offset, proto_tree *tree)
{
guint32 mapreq;
mapreq = tvb_get_ntohl(tvb, offset + 0);
if (tree)
proto_tree_add_text(tree, tvb, offset, 4, "Request: %s (%u)",
val_to_str(mapreq, names_mapreq, "%u"), mapreq);
offset += 4;
return offset;
}
static int
dissect_pcnfsd2_dissect_mapreq_arg_item(tvbuff_t *tvb, int offset,
packet_info *pinfo _U_, proto_tree *tree)
{
offset = dissect_pcnfsd_mapreq(tvb, offset, tree);
offset = dissect_rpc_uint32(tvb, tree, hf_pcnfsd_uid, offset);
offset = dissect_pcnfsd_username(tvb, offset, tree);
return offset;
}
static int
dissect_pcnfsd2_mapid_call(tvbuff_t *tvb, int offset, packet_info *pinfo,
proto_tree *tree)
{
offset = dissect_rpc_string(tvb, tree, hf_pcnfsd_comment, offset, NULL);
offset = dissect_rpc_list(tvb, pinfo, tree, offset,
dissect_pcnfsd2_dissect_mapreq_arg_item);
return offset;
}
#define MAP_RES_OK 0
#define MAP_RES_UNKNOWN 1
#define MAP_RES_DENIED 2
static const value_string names_maprstat[] =
{
{ MAP_RES_OK, "MAP_RES_OK" },
{ MAP_RES_UNKNOWN, "MAP_RES_UNKNOWN" },
{ MAP_RES_DENIED, "MAP_RES_DENIED" },
{ 0, NULL }
};
static int
dissect_pcnfsd2_dissect_mapreq_res_item(tvbuff_t *tvb, int offset,
packet_info *pinfo _U_, proto_tree *tree)
{
guint32 maprstat;
offset = dissect_pcnfsd_mapreq(tvb, offset, tree);
maprstat = tvb_get_ntohl(tvb, offset + 0);
if (tree)
proto_tree_add_text(tree, tvb, offset, 4, "Status: %s (%u)",
val_to_str(maprstat, names_maprstat, "%u"), maprstat);
offset += 4;
offset = dissect_rpc_uint32(tvb, tree, hf_pcnfsd_uid, offset);
offset = dissect_pcnfsd_username(tvb, offset, tree);
return offset;
}
static int
dissect_pcnfsd2_mapid_reply(tvbuff_t *tvb, int offset, packet_info *pinfo,
proto_tree *tree)
{
offset = dissect_rpc_string(tvb, tree, hf_pcnfsd_comment, offset, NULL);
offset = dissect_rpc_list(tvb, pinfo, tree, offset,
dissect_pcnfsd2_dissect_mapreq_res_item);
return offset;
}
/* "NFS Illustrated 14.7.13 */
static void
pcnfsd_decode_obscure(char* data, int len)
{
for ( ; len>0 ; len--, data++) {
*data = (*data ^ 0x5b) & 0x7f;
}
}
/* "NFS Illustrated" 14.7.13 */
static int
dissect_pcnfsd2_auth_call(tvbuff_t *tvb, int offset, packet_info *pinfo _U_,
proto_tree *tree)
{
int newoffset;
char *ident = NULL;
proto_item *ident_item = NULL;
proto_tree *ident_tree = NULL;
char *password = NULL;
proto_item *password_item = NULL;
proto_tree *password_tree = NULL;
offset = dissect_rpc_string(tvb, tree,
hf_pcnfsd_auth_client, offset, NULL);
if (tree) {
ident_item = proto_tree_add_text(tree, tvb,
offset, -1, "Authentication Ident");
if (ident_item)
ident_tree = proto_item_add_subtree(
ident_item, ett_pcnfsd_auth_ident);
}
newoffset = dissect_rpc_string(tvb, ident_tree,
hf_pcnfsd_auth_ident_obscure, offset, &ident);
if (ident_item) {
proto_item_set_len(ident_item, newoffset-offset);
}
if (ident) {
pcnfsd_decode_obscure(ident, strlen(ident));
if (ident_tree)
proto_tree_add_string(ident_tree,
hf_pcnfsd_auth_ident_clear,
tvb, offset+4, strlen(ident), ident);
}
if (ident_item) {
proto_item_set_text(ident_item, "Authentication Ident: %s",
ident);
}
offset = newoffset;
if (tree) {
password_item = proto_tree_add_text(tree, tvb,
offset, -1, "Authentication Password");
if (password_item)
password_tree = proto_item_add_subtree(
password_item, ett_pcnfsd_auth_password);
}
newoffset = dissect_rpc_string(tvb, password_tree,
hf_pcnfsd_auth_password_obscure, offset, &password);
if (password_item) {
proto_item_set_len(password_item, newoffset-offset);
}
if (password) {
pcnfsd_decode_obscure(password, strlen(password));
if (password_tree)
proto_tree_add_string(password_tree,
hf_pcnfsd_auth_password_clear,
tvb, offset+4, strlen(password), password);
}
if (password_item) {
proto_item_set_text(password_item, "Authentication Password: %s",
password);
}
offset = newoffset;
offset = dissect_rpc_string(tvb, tree,
hf_pcnfsd_comment, offset, NULL);
return offset;
}
/* "NFS Illustrated" 14.7.13 */
static int
dissect_pcnfsd2_auth_reply(tvbuff_t *tvb, int offset, packet_info *pinfo _U_,
proto_tree *tree)
{
int gids_count;
proto_item *gitem = NULL;
proto_tree *gtree = NULL;
int gids_i;
offset = dissect_rpc_uint32(tvb, tree, hf_pcnfsd_status, offset);
offset = dissect_rpc_uint32(tvb, tree, hf_pcnfsd_uid, offset);
offset = dissect_rpc_uint32(tvb, tree, hf_pcnfsd_gid, offset);
gids_count = tvb_get_ntohl(tvb,offset+0);
if (tree) {
gitem = proto_tree_add_text(tree, tvb,
offset, 4+gids_count*4, "Group IDs: %d", gids_count);
gtree = proto_item_add_subtree(gitem, ett_pcnfsd_gids);
}
if (gtree) {
proto_tree_add_item(gtree, hf_pcnfsd_gids_count, tvb, offset, 4, FALSE);
}
offset += 4;
for (gids_i = 0 ; gids_i < gids_count ; gids_i++) {
offset = dissect_rpc_uint32(tvb, gtree,
hf_pcnfsd_gid, offset);
}
offset = dissect_rpc_string(tvb, tree,
hf_pcnfsd_homedir, offset, NULL);
/* should be signed int32 */
offset = dissect_rpc_uint32(tvb, tree, hf_pcnfsd_def_umask, offset);
offset = dissect_rpc_string(tvb, tree,
hf_pcnfsd_comment, offset, NULL);
return offset;
}
/* "NFS Illustrated", 14.6 */
/* proc number, "proc name", dissect_request, dissect_reply */
/* NULL as function pointer means: type of arguments is "void". */
static const vsff pcnfsd1_proc[] = {
{ 0, "NULL", NULL, NULL },
{ 1, "AUTH", NULL, NULL },
{ 2, "PR_INIT", NULL, NULL },
{ 3, "PR_START", NULL, NULL },
{ 0, NULL, NULL, NULL }
};
static const value_string pcnfsd1_proc_vals[] = {
{ 0, "NULL" },
{ 1, "AUTH" },
{ 2, "PR_INIT" },
{ 3, "PR_START" },
{ 0, NULL }
};
/* end of PCNFS version 1 */
/* "NFS Illustrated", 14.7 */
static const vsff pcnfsd2_proc[] = {
{ 0, "NULL", NULL, NULL },
{ 1, "INFO", NULL, NULL },
{ 2, "PR_INIT", NULL, NULL },
{ 3, "PR_START", NULL, NULL },
{ 4, "PR_LIST", NULL, NULL },
{ 5, "PR_QUEUE", NULL, NULL },
{ 6, "PR_STATUS", NULL, NULL },
{ 7, "PR_CANCEL", NULL, NULL },
{ 8, "PR_ADMIN", NULL, NULL },
{ 9, "PR_REQUEUE", NULL, NULL },
{ 10, "PR_HOLD", NULL, NULL },
{ 11, "PR_RELEASE", NULL, NULL },
{ 12, "MAPID",
dissect_pcnfsd2_mapid_call, dissect_pcnfsd2_mapid_reply },
{ 13, "AUTH",
dissect_pcnfsd2_auth_call, dissect_pcnfsd2_auth_reply },
{ 14, "ALERT", NULL, NULL },
{ 0, NULL, NULL, NULL }
};
static const value_string pcnfsd2_proc_vals[] = {
{ 0, "NULL" },
{ 1, "INFO" },
{ 2, "PR_INIT" },
{ 3, "PR_START" },
{ 4, "PR_LIST" },
{ 5, "PR_QUEUE" },
{ 6, "PR_STATUS" },
{ 7, "PR_CANCEL" },
{ 8, "PR_ADMIN" },
{ 9, "PR_REQUEUE" },
{ 10, "PR_HOLD" },
{ 11, "PR_RELEASE" },
{ 12, "MAPID" },
{ 13, "AUTH" },
{ 14, "ALERT" },
{ 0, NULL }
};
/* end of PCNFS version 2 */
void
proto_register_pcnfsd(void)
{
static hf_register_info hf[] = {
{ &hf_pcnfsd_procedure_v1, {
"V1 Procedure", "pcnfsd.procedure_v1", FT_UINT32, BASE_DEC,
VALS(pcnfsd1_proc_vals), 0, "V1 Procedure", HFILL }},
{ &hf_pcnfsd_procedure_v2, {
"V2 Procedure", "pcnfsd.procedure_v2", FT_UINT32, BASE_DEC,
VALS(pcnfsd2_proc_vals), 0, "V2 Procedure", HFILL }},
{ &hf_pcnfsd_auth_client, {
"Authentication Client", "pcnfsd.auth.client", FT_STRING, BASE_DEC,
NULL, 0, "Authentication Client", HFILL }},
{ &hf_pcnfsd_auth_ident_obscure, {
"Obscure Ident", "pcnfsd.auth.ident.obscure", FT_STRING, BASE_DEC,
NULL, 0, "Athentication Obscure Ident", HFILL }},
{ &hf_pcnfsd_auth_ident_clear, {
"Clear Ident", "pcnfsd.auth.ident.clear", FT_STRING, BASE_DEC,
NULL, 0, "Authentication Clear Ident", HFILL }},
{ &hf_pcnfsd_auth_password_obscure, {
"Obscure Password", "pcnfsd.auth.password.obscure", FT_STRING, BASE_DEC,
NULL, 0, "Athentication Obscure Password", HFILL }},
{ &hf_pcnfsd_auth_password_clear, {
"Clear Password", "pcnfsd.auth.password.clear", FT_STRING, BASE_DEC,
NULL, 0, "Authentication Clear Password", HFILL }},
{ &hf_pcnfsd_comment, {
"Comment", "pcnfsd.comment", FT_STRING, BASE_DEC,
NULL, 0, "Comment", HFILL }},
{ &hf_pcnfsd_status, {
"Reply Status", "pcnfsd.status", FT_UINT32, BASE_DEC,
NULL, 0, "Status", HFILL }},
{ &hf_pcnfsd_uid, {
"User ID", "pcnfsd.uid", FT_UINT32, BASE_DEC,
NULL, 0, "User ID", HFILL }},
{ &hf_pcnfsd_gid, {
"Group ID", "pcnfsd.gid", FT_UINT32, BASE_DEC,
NULL, 0, "Group ID", HFILL }},
{ &hf_pcnfsd_gids_count, {
"Group ID Count", "pcnfsd.gids.count", FT_UINT32, BASE_DEC,
NULL, 0, "Group ID Count", HFILL }},
{ &hf_pcnfsd_homedir, {
"Home Directory", "pcnfsd.homedir", FT_STRING, BASE_DEC,
NULL, 0, "Home Directory", HFILL }},
{ &hf_pcnfsd_def_umask, {
"def_umask", "pcnfsd.def_umask", FT_UINT32, BASE_OCT,
NULL, 0, "def_umask", HFILL }},
{ &hf_pcnfsd_username, {
"User name", "pcnfsd.username", FT_STRING, BASE_DEC,
NULL, 0, "pcnfsd.username", HFILL }},
};
static gint *ett[] = {
&ett_pcnfsd,
&ett_pcnfsd_auth_ident,
&ett_pcnfsd_auth_password,
&ett_pcnfsd_gids
};
proto_pcnfsd = proto_register_protocol("PC NFS",
"PCNFSD", "pcnfsd");
proto_register_field_array(proto_pcnfsd, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
}
void
proto_reg_handoff_pcnfsd(void)
{
/* Register the protocol as RPC */
rpc_init_prog(proto_pcnfsd, PCNFSD_PROGRAM, ett_pcnfsd);
/* Register the procedure tables */
rpc_init_proc_table(PCNFSD_PROGRAM, 1, pcnfsd1_proc, hf_pcnfsd_procedure_v1);
rpc_init_proc_table(PCNFSD_PROGRAM, 2, pcnfsd2_proc, hf_pcnfsd_procedure_v2);
}
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