wireshark/epan/dissectors/packet-smb-browse.c

1115 lines
35 KiB
C

/* packet-smb-browse.c
* Routines for SMB Browser packet dissection
* Copyright 1999, Richard Sharpe <rsharpe@ns.aus.com>
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* Copied from packet-pop.c
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "config.h"
#include <epan/packet.h>
#include <epan/to_str.h>
#include "packet-smb-browse.h"
#include "packet-dcerpc.h"
void proto_register_smb_browse(void);
static int proto_smb_browse = -1;
static int hf_command = -1;
static int hf_update_count = -1;
static int hf_periodicity = -1;
static int hf_server_name = -1;
static int hf_mb_server_name = -1;
static int hf_mb_reset_command = -1;
static int hf_mb_reset_demote = -1;
static int hf_mb_reset_flush = -1;
static int hf_mb_reset_stop = -1;
static int hf_os_major = -1;
static int hf_os_minor = -1;
static int hf_server_type = -1;
static int hf_server_type_workstation = -1;
static int hf_server_type_server = -1;
static int hf_server_type_sql = -1;
static int hf_server_type_domain = -1;
static int hf_server_type_backup = -1;
static int hf_server_type_time = -1;
static int hf_server_type_apple = -1;
static int hf_server_type_novell = -1;
static int hf_server_type_member = -1;
static int hf_server_type_print = -1;
static int hf_server_type_dialin = -1;
static int hf_server_type_xenix = -1;
static int hf_server_type_ntw = -1;
static int hf_server_type_wfw = -1;
static int hf_server_type_nts = -1;
static int hf_server_type_potentialb = -1;
static int hf_server_type_backupb = -1;
static int hf_server_type_masterb = -1;
static int hf_server_type_domainmasterb = -1;
static int hf_server_type_osf = -1;
static int hf_server_type_vms = -1;
static int hf_server_type_w95 = -1;
static int hf_server_type_dfs = -1;
static int hf_server_type_local = -1;
static int hf_server_type_domainenum = -1;
static int hf_election_version = -1;
static int hf_proto_major = -1;
static int hf_proto_minor = -1;
static int hf_sig_const = -1;
static int hf_server_comment = -1;
static int hf_unused_flags = -1;
static int hf_response_computer_name = -1;
static int hf_election_criteria = -1;
static int hf_election_desire = -1;
static int hf_election_desire_flags_backup = -1;
static int hf_election_desire_flags_standby = -1;
static int hf_election_desire_flags_master = -1;
static int hf_election_desire_flags_domain_master = -1;
static int hf_election_desire_flags_wins = -1;
static int hf_election_desire_flags_nt = -1;
/* static int hf_election_revision = -1; */
static int hf_election_os = -1;
static int hf_election_os_wfw = -1;
static int hf_election_os_ntw = -1;
static int hf_election_os_nts = -1;
static int hf_server_uptime = -1;
static int hf_backup_count = -1;
static int hf_backup_token = -1;
static int hf_backup_server = -1;
static int hf_browser_to_promote = -1;
static int hf_windows_version = -1;
static int hf_mysterious_field = -1;
static gint ett_browse = -1;
static gint ett_browse_flags = -1;
static gint ett_browse_election_criteria = -1;
static gint ett_browse_election_os = -1;
static gint ett_browse_election_desire = -1;
static gint ett_browse_reset_cmd_flags = -1;
#define SERVER_WORKSTATION 0
#define SERVER_SERVER 1
#define SERVER_SQL_SERVER 2
#define SERVER_DOMAIN_CONTROLLER 3
#define SERVER_BACKUP_CONTROLLER 4
#define SERVER_TIME_SOURCE 5
#define SERVER_APPLE_SERVER 6
#define SERVER_NOVELL_SERVER 7
#define SERVER_DOMAIN_MEMBER_SERVER 8
#define SERVER_PRINT_QUEUE_SERVER 9
#define SERVER_DIALIN_SERVER 10
#define SERVER_XENIX_SERVER 11
#define SERVER_NT_WORKSTATION 12
#define SERVER_WINDOWS_FOR_WORKGROUPS 13
#define SERVER_NT_SERVER 15
#define SERVER_POTENTIAL_BROWSER 16
#define SERVER_BACKUP_BROWSER 17
#define SERVER_MASTER_BROWSER 18
#define SERVER_DOMAIN_MASTER_BROWSER 19
#define SERVER_OSF 20
#define SERVER_VMS 21
#define SERVER_WINDOWS_95 22
#define SERVER_DFS_SERVER 23
#define SERVER_LOCAL_LIST_ONLY 30
#define SERVER_DOMAIN_ENUM 31
static const value_string server_types[] = {
{SERVER_WORKSTATION, "Workstation"},
{SERVER_SERVER, "Server"},
{SERVER_SQL_SERVER, "SQL Server"},
{SERVER_DOMAIN_CONTROLLER, "Domain Controller"},
{SERVER_BACKUP_CONTROLLER, "Backup Controller"},
{SERVER_TIME_SOURCE, "Time Source"},
{SERVER_APPLE_SERVER, "Apple Server"},
{SERVER_NOVELL_SERVER, "Novell Server"},
{SERVER_DOMAIN_MEMBER_SERVER, "Domain Member Server"},
{SERVER_PRINT_QUEUE_SERVER, "Print Queue Server"},
{SERVER_DIALIN_SERVER, "Dialin Server"},
{SERVER_XENIX_SERVER, "Xenix Server"},
{SERVER_NT_WORKSTATION, "NT Workstation"},
{SERVER_WINDOWS_FOR_WORKGROUPS, "Windows for Workgroups"},
{SERVER_NT_SERVER, "NT Server"},
{SERVER_POTENTIAL_BROWSER, "Potential Browser"},
{SERVER_BACKUP_BROWSER, "Backup Browser"},
{SERVER_MASTER_BROWSER, "Master Browser"},
{SERVER_DOMAIN_MASTER_BROWSER, "Domain Master Browser"},
{SERVER_OSF, "OSF"},
{SERVER_VMS, "VMS"},
{SERVER_WINDOWS_95, "Windows 95 or above"},
{SERVER_DFS_SERVER, "DFS server"},
{SERVER_LOCAL_LIST_ONLY, "Local List Only"},
{SERVER_DOMAIN_ENUM, "Domain Enum"},
{0, NULL}
};
#define SET_WINDOWS_VERSION_STRING(os_major_ver, os_minor_ver, windows_version) \
if(os_major_ver == 6 && os_minor_ver == 1) \
windows_version = "Windows 7 or Windows Server 2008 R2"; \
\
else if(os_major_ver == 6 && os_minor_ver == 0) \
windows_version = "Windows Vista or Windows Server 2008"; \
\
else if(os_major_ver == 5 && os_minor_ver == 2) \
windows_version = "Windows Server 2003 R2 or Windows Server 2003"; \
\
else if(os_major_ver == 5 && os_minor_ver == 1) \
windows_version = "Windows XP"; \
\
else if(os_major_ver == 5 && os_minor_ver == 0) \
windows_version = "Windows 2000"; \
\
else \
windows_version = "";
static const value_string resetbrowserstate_command_names[] = {
{ 0x01, "Stop being a master browser and become a backup browser"},
{ 0x02, "Discard browse lists, stop being a master browser, and try again"},
{ 0x04, "Stop being a master browser for ever"},
{ 0, NULL}
};
static true_false_string tfs_demote_to_backup = {
"Demote an LMB to a Backup Browser",
"Do not demote an LMB to a Backup Browser"
};
static true_false_string tfs_flush_browse_list = {
"Flush the Browse List",
"Do not Flush the Browse List"
};
static true_false_string tfs_stop_being_lmb = {
"Stop Being a Local Master Browser",
"Do not Stop Being a Local Master Browser"
};
static const true_false_string tfs_workstation = {
"This is a Workstation",
"This is NOT a Workstation"
};
static const true_false_string tfs_server = {
"This is a Server",
"This is NOT a Server"
};
static const true_false_string tfs_sql = {
"This is an SQL server",
"This is NOT an SQL server"
};
static const true_false_string tfs_domain = {
"This is a Domain Controller",
"This is NOT a Domain Controller"
};
static const true_false_string tfs_backup = {
"This is a Backup Controller",
"This is NOT a Backup Controller"
};
static const true_false_string tfs_time = {
"This is a Time Source",
"This is NOT a Time Source"
};
static const true_false_string tfs_apple = {
"This is an Apple host",
"This is NOT an Apple host"
};
static const true_false_string tfs_novell = {
"This is a Novell server",
"This is NOT a Novell server"
};
static const true_false_string tfs_member = {
"This is a Domain Member server",
"This is NOT a Domain Member server"
};
static const true_false_string tfs_print = {
"This is a Print Queue server",
"This is NOT a Print Queue server"
};
static const true_false_string tfs_dialin = {
"This is a Dialin server",
"This is NOT a Dialin server"
};
static const true_false_string tfs_xenix = {
"This is a Xenix server",
"This is NOT a Xenix server"
};
static const true_false_string tfs_ntw = {
"This is an NT Workstation",
"This is NOT an NT Workstation"
};
static const true_false_string tfs_wfw = {
"This is a WfW host",
"This is NOT a WfW host"
};
static const true_false_string tfs_nts = {
"This is an NT Server",
"This is NOT an NT Server"
};
static const true_false_string tfs_potentialb = {
"This is a Potential Browser",
"This is NOT a Potential Browser"
};
static const true_false_string tfs_backupb = {
"This is a Backup Browser",
"This is NOT a Backup Browser"
};
static const true_false_string tfs_masterb = {
"This is a Master Browser",
"This is NOT a Master Browser"
};
static const true_false_string tfs_domainmasterb = {
"This is a Domain Master Browser",
"This is NOT a Domain Master Browser"
};
static const true_false_string tfs_osf = {
"This is an OSF host",
"This is NOT an OSF host"
};
static const true_false_string tfs_vms = {
"This is a VMS host",
"This is NOT a VMS host"
};
static const true_false_string tfs_w95 = {
"This is a Windows 95 or above host",
"This is NOT a Windows 95 or above host"
};
static const true_false_string tfs_dfs = {
"This is a DFS server",
"THis is NOT a DFS server"
};
static const true_false_string tfs_local = {
"This is a local list only request",
"This is NOT a local list only request"
};
static const true_false_string tfs_domainenum = {
"This is a Domain Enum request",
"This is NOT a Domain Enum request"
};
#define DESIRE_BACKUP 0
#define DESIRE_STANDBY 1
#define DESIRE_MASTER 2
#define DESIRE_DOMAIN_MASTER 3
#define DESIRE_WINS 5
#define DESIRE_NT 7
static const true_false_string tfs_desire_backup = {
"Backup Browse Server",
"NOT Backup Browse Server"
};
static const true_false_string tfs_desire_standby = {
"Standby Browse Server",
"NOT Standby Browse Server"
};
static const true_false_string tfs_desire_master = {
"Master Browser",
"NOT Master Browser"
};
static const true_false_string tfs_desire_domain_master = {
"Domain Master Browse Server",
"NOT Domain Master Browse Server"
};
static const true_false_string tfs_desire_wins = {
"WINS Client",
"NOT WINS Client"
};
static const true_false_string tfs_desire_nt = {
"Windows NT Advanced Server",
"NOT Windows NT Advanced Server"
};
#define BROWSE_HOST_ANNOUNCE 1
#define BROWSE_REQUEST_ANNOUNCE 2
#define BROWSE_ELECTION_REQUEST 8
#define BROWSE_BACKUP_LIST_REQUEST 9
#define BROWSE_BACKUP_LIST_RESPONSE 10
#define BROWSE_BECOME_BACKUP 11
#define BROWSE_DOMAIN_ANNOUNCEMENT 12
#define BROWSE_MASTER_ANNOUNCEMENT 13
#define BROWSE_RESETBROWSERSTATE_ANNOUNCEMENT 14
#define BROWSE_LOCAL_MASTER_ANNOUNCEMENT 15
static const value_string commands[] = {
{BROWSE_HOST_ANNOUNCE, "Host Announcement"},
{BROWSE_REQUEST_ANNOUNCE, "Request Announcement"},
{BROWSE_ELECTION_REQUEST, "Browser Election Request"},
{BROWSE_BACKUP_LIST_REQUEST, "Get Backup List Request"},
{BROWSE_BACKUP_LIST_RESPONSE, "Get Backup List Response"},
{BROWSE_BECOME_BACKUP, "Become Backup Browser"},
{BROWSE_DOMAIN_ANNOUNCEMENT, "Domain/Workgroup Announcement"},
{BROWSE_MASTER_ANNOUNCEMENT, "Master Announcement"},
{BROWSE_RESETBROWSERSTATE_ANNOUNCEMENT, "Reset Browser State Announcement"},
{BROWSE_LOCAL_MASTER_ANNOUNCEMENT, "Local Master Announcement"},
{0, NULL}
};
#define OS_WFW 0
#define OS_NTW 4
#define OS_NTS 5
static const true_false_string tfs_os_wfw = {
"Windows for Workgroups",
"Not Windows for Workgroups"
};
static const true_false_string tfs_os_ntw = {
"Windows NT Workstation",
"Not Windows NT Workstation"
};
static const true_false_string tfs_os_nts = {
"Windows NT Server",
"Not Windows NT Server"
};
static void
dissect_election_criterion_os(tvbuff_t *tvb, proto_tree *parent_tree, int offset)
{
static int * const flags[] = {
&hf_election_os_wfw,
&hf_election_os_ntw,
&hf_election_os_nts,
NULL
};
proto_tree_add_bitmask(parent_tree, tvb, offset, hf_election_os, ett_browse_election_os, flags, ENC_NA);
}
static void
dissect_election_criterion_desire(tvbuff_t *tvb, proto_tree *parent_tree, int offset)
{
static int * const flags[] = {
&hf_election_desire_flags_backup,
&hf_election_desire_flags_standby,
&hf_election_desire_flags_master,
&hf_election_desire_flags_domain_master,
&hf_election_desire_flags_wins,
&hf_election_desire_flags_nt,
NULL
};
proto_tree_add_bitmask(parent_tree, tvb, offset, hf_election_desire, ett_browse_election_desire, flags, ENC_NA);
}
static void
dissect_election_criterion(tvbuff_t *tvb, proto_tree *parent_tree, int offset)
{
proto_tree *tree = NULL;
proto_item *item = NULL;
guint32 criterion;
criterion = tvb_get_letohl(tvb, offset);
if (parent_tree) {
item = proto_tree_add_uint(parent_tree, hf_election_criteria, tvb, offset, 4, criterion);
tree = proto_item_add_subtree(item, ett_browse_election_criteria);
}
/* election desire */
dissect_election_criterion_desire(tvb, tree, offset);
offset += 1;
/* browser protocol major version */
proto_tree_add_item(tree, hf_proto_major, tvb, offset, 1, ENC_LITTLE_ENDIAN);
offset += 1;
/* browser protocol minor version */
proto_tree_add_item(tree, hf_proto_minor, tvb, offset, 1, ENC_LITTLE_ENDIAN);
offset += 1;
/* election os */
dissect_election_criterion_os(tvb, tree, offset);
}
/*
* XXX - this causes non-browser packets to have browser fields.
*/
int
dissect_smb_server_type_flags(tvbuff_t *tvb, int offset, packet_info *pinfo,
proto_tree *parent_tree, guint8 *drep,
gboolean infoflag)
{
guint32 flags;
int i;
static int * const type_flags[] = {
&hf_server_type_workstation,
&hf_server_type_server,
&hf_server_type_sql,
&hf_server_type_domain,
&hf_server_type_backup,
&hf_server_type_time,
&hf_server_type_apple,
&hf_server_type_novell,
&hf_server_type_member,
&hf_server_type_print,
&hf_server_type_dialin,
&hf_server_type_xenix,
&hf_server_type_ntw,
&hf_server_type_wfw,
&hf_server_type_nts,
&hf_server_type_potentialb,
&hf_server_type_backupb,
&hf_server_type_masterb,
&hf_server_type_domainmasterb,
&hf_server_type_osf,
&hf_server_type_vms,
&hf_server_type_w95,
&hf_server_type_dfs,
&hf_server_type_local,
&hf_server_type_domainenum,
NULL
};
if (drep != NULL) {
/*
* Called from a DCE RPC protocol dissector, for a
* protocol where a 32-bit NDR integer contains
* an server type mask; extract the server type mask
* with an NDR call (but don't put it into the
* protocol tree, as we can't get a pointer to the
* item it puts in, and thus can't put a tree below
* it with the values of the individual bits).
*/
offset = dissect_ndr_uint32(
tvb, offset, pinfo, NULL, NULL, drep, hf_server_type, &flags);
} else {
/*
* Called from SMB browser or RAP, where the server type
* mask is just a 4-byte little-endian quantity with no
* special NDR alignment requirement; extract it with
* "tvb_get_letohl()".
*/
flags = tvb_get_letohl(tvb, offset);
offset += 4;
}
if (infoflag) {
/* Append the type(s) of the system to the COL_INFO line ... */
for (i = 0; i < 32; i++) {
if (flags & (1U<<i)) {
col_append_fstr(pinfo->cinfo, COL_INFO, ", %s",
val_to_str(i, server_types,
"Unknown server type:%d"));
}
}
}
proto_tree_add_bitmask_value(parent_tree, tvb, offset-4,
hf_server_type, ett_browse_flags, type_flags, flags);
return offset;
}
#define HOST_NAME_LEN 16
static int
dissect_mailslot_browse(tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree, void* data _U_)
{
int offset = 0;
guint8 cmd;
proto_tree *tree = NULL;
proto_item *item = NULL;
guint32 periodicity;
guint8 *host_name;
gint namelen;
guint8 server_count;
guint8 os_major_ver, os_minor_ver;
const gchar *windows_version;
int i;
guint32 uptime;
col_set_str(pinfo->cinfo, COL_PROTOCOL, "BROWSER");
col_clear(pinfo->cinfo, COL_INFO);
cmd = tvb_get_guint8(tvb, offset);
/* Put in something, and replace it later */
col_add_str(pinfo->cinfo, COL_INFO, val_to_str(cmd, commands, "Unknown command:0x%02x"));
item = proto_tree_add_item(parent_tree, proto_smb_browse, tvb, offset, -1, ENC_NA);
tree = proto_item_add_subtree(item, ett_browse);
/* command */
proto_tree_add_uint(tree, hf_command, tvb, offset, 1, cmd);
offset += 1;
switch (cmd) {
case BROWSE_DOMAIN_ANNOUNCEMENT:
case BROWSE_LOCAL_MASTER_ANNOUNCEMENT:
case BROWSE_HOST_ANNOUNCE: {
/* update count */
proto_tree_add_item(tree, hf_update_count, tvb, offset, 1, ENC_LITTLE_ENDIAN);
offset += 1;
/* periodicity (in milliseconds) */
periodicity = tvb_get_letohl(tvb, offset);
proto_tree_add_uint_format_value(tree, hf_periodicity, tvb, offset, 4,
periodicity,
"%s",
signed_time_msecs_to_str(pinfo->pool, periodicity));
offset += 4;
/* server name */
host_name = tvb_get_stringzpad(pinfo->pool, tvb, offset, HOST_NAME_LEN, ENC_CP437|ENC_NA);
col_append_fstr(pinfo->cinfo, COL_INFO, " %s", host_name);
proto_tree_add_string_format(tree, hf_server_name,
tvb, offset, HOST_NAME_LEN,
host_name,
(cmd==BROWSE_DOMAIN_ANNOUNCEMENT)?
"Domain/Workgroup: %s":
"Host Name: %s",
host_name);
offset += HOST_NAME_LEN;
/* Windows version (See "OSVERSIONINFO Structure" on MSDN) */
os_major_ver = tvb_get_guint8(tvb, offset);
os_minor_ver = tvb_get_guint8(tvb, offset+1);
SET_WINDOWS_VERSION_STRING(os_major_ver, os_minor_ver, windows_version);
proto_tree_add_string(tree, hf_windows_version, tvb, offset, 2, windows_version);
/* OS major version */
proto_tree_add_item(tree, hf_os_major, tvb, offset, 1, ENC_LITTLE_ENDIAN);
offset += 1;
/* OS minor version */
proto_tree_add_item(tree, hf_os_minor, tvb, offset, 1, ENC_LITTLE_ENDIAN);
offset += 1;
/* server type flags */
offset = dissect_smb_server_type_flags(
tvb, offset, pinfo, tree, NULL, TRUE);
if (cmd == BROWSE_DOMAIN_ANNOUNCEMENT && tvb_get_letohs (tvb, offset + 2) != 0xAA55) {
/*
* Network Monitor claims this is a "Comment
* Pointer". I don't believe it.
*
* It's not a browser protocol major/minor
* version number, and signature constant,
* however.
*/
proto_tree_add_item(tree, hf_mysterious_field, tvb, offset, 4, ENC_LITTLE_ENDIAN);
offset += 4;
} else {
/* browser protocol major version */
proto_tree_add_item(tree, hf_proto_major, tvb, offset, 1, ENC_LITTLE_ENDIAN);
offset += 1;
/* browser protocol minor version */
proto_tree_add_item(tree, hf_proto_minor, tvb, offset, 1, ENC_LITTLE_ENDIAN);
offset += 1;
/* signature constant */
proto_tree_add_item(tree, hf_sig_const, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
}
/* master browser server name or server comment */
namelen = tvb_strsize(tvb, offset);
proto_tree_add_item(tree,
(cmd==BROWSE_DOMAIN_ANNOUNCEMENT)?
hf_mb_server_name : hf_server_comment,
tvb, offset, namelen, ENC_ASCII|ENC_NA);
break;
}
case BROWSE_REQUEST_ANNOUNCE: {
guint8 *computer_name;
/* unused/unknown flags */
proto_tree_add_item(tree, hf_unused_flags,
tvb, offset, 1, ENC_LITTLE_ENDIAN);
offset += 1;
/* name of computer to which to send reply */
computer_name = tvb_get_stringz_enc(pinfo->pool, tvb, offset, &namelen, ENC_ASCII);
proto_tree_add_string(tree, hf_response_computer_name,
tvb, offset, namelen, computer_name);
col_append_fstr(pinfo->cinfo, COL_INFO, " %s", computer_name);
break;
}
case BROWSE_ELECTION_REQUEST:
/* election version */
proto_tree_add_item(tree, hf_election_version, tvb, offset, 1, ENC_LITTLE_ENDIAN);
offset += 1;
/* criterion */
dissect_election_criterion(tvb, tree, offset);
offset += 4;
/* server uptime */
uptime = tvb_get_letohl(tvb, offset);
proto_tree_add_uint_format_value(tree, hf_server_uptime,
tvb, offset, 4, uptime,
"%s",
signed_time_msecs_to_str(pinfo->pool, uptime));
offset += 4;
/* next 4 bytes must be zero */
offset += 4;
/* server name */
namelen = tvb_strsize(tvb, offset);
proto_tree_add_item(tree, hf_server_name,
tvb, offset, namelen, ENC_ASCII);
break;
case BROWSE_BACKUP_LIST_REQUEST:
/* backup list requested count */
proto_tree_add_item(tree, hf_backup_count, tvb, offset, 1, ENC_LITTLE_ENDIAN);
offset += 1;
/* backup requested token */
proto_tree_add_item(tree, hf_backup_token, tvb, offset, 4, ENC_LITTLE_ENDIAN);
break;
case BROWSE_BACKUP_LIST_RESPONSE:
/* backup list requested count */
server_count = tvb_get_guint8(tvb, offset);
proto_tree_add_uint(tree, hf_backup_count, tvb, offset, 1,
server_count);
offset += 1;
/* backup requested token */
proto_tree_add_item(tree, hf_backup_token, tvb, offset, 4, ENC_LITTLE_ENDIAN);
offset += 4;
/* backup server names */
for (i = 0; i < server_count; i++) {
namelen = tvb_strsize(tvb, offset);
proto_tree_add_item(tree, hf_backup_server,
tvb, offset, namelen, ENC_ASCII);
offset += namelen;
}
break;
case BROWSE_MASTER_ANNOUNCEMENT:
/* master browser server name */
namelen = tvb_strsize(tvb, offset);
proto_tree_add_item(tree, hf_mb_server_name,
tvb, offset, namelen, ENC_ASCII);
break;
case BROWSE_RESETBROWSERSTATE_ANNOUNCEMENT: {
static int * const flags[] = {
&hf_mb_reset_demote,
&hf_mb_reset_flush,
&hf_mb_reset_stop,
NULL
};
proto_tree_add_bitmask(tree, tvb, offset, hf_mb_reset_command, ett_browse_reset_cmd_flags, flags, ENC_NA);
break;
}
case BROWSE_BECOME_BACKUP:
/* name of browser to promote */
namelen = tvb_strsize(tvb, offset);
proto_tree_add_item(tree, hf_browser_to_promote,
tvb, offset, namelen, ENC_ASCII);
break;
}
return tvb_captured_length(tvb);
}
/*
* It appears that browser announcements sent to \MAILSLOT\LANMAN aren't
* the same as browser announcements sent to \MAILSLOT\BROWSE.
* Was that an older version of the protocol?
*
* The document at
*
* http://www.samba.org/samba/ftp/specs/brow_rev.txt
*
* gives both formats of host announcement packets, saying that
* "[The first] format seems wrong", that one being what appears to
* show up in \MAILSLOT\LANMAN packets, and that "[The second one]
* may be better", that one being what appears to show up in
* \MAILSLOT\BROWSE packets.
*
* XXX - what other browser packets go out to that mailslot?
*/
static int
dissect_mailslot_lanman(tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree, void* data _U_)
{
int offset = 0;
guint8 cmd;
proto_tree *tree;
proto_item *item;
guint32 periodicity;
const guint8 *host_name;
guint8 os_major_ver, os_minor_ver;
const gchar *windows_version;
guint namelen;
col_set_str(pinfo->cinfo, COL_PROTOCOL, "BROWSER");
col_clear(pinfo->cinfo, COL_INFO);
cmd = tvb_get_guint8(tvb, offset);
/* Put in something, and replace it later */
col_add_str(pinfo->cinfo, COL_INFO, val_to_str(cmd, commands, "Unknown command:0x%02x"));
item = proto_tree_add_item(parent_tree, proto_smb_browse, tvb, offset, -1, ENC_NA);
tree = proto_item_add_subtree(item, ett_browse);
/* command */
proto_tree_add_uint(tree, hf_command, tvb, offset, 1, cmd);
offset += 1;
switch (cmd) {
case BROWSE_DOMAIN_ANNOUNCEMENT:
case BROWSE_LOCAL_MASTER_ANNOUNCEMENT:
case BROWSE_HOST_ANNOUNCE:
/* update count */
proto_tree_add_item(tree, hf_update_count, tvb, offset, 1, ENC_LITTLE_ENDIAN);
offset += 1;
/* server type flags */
offset = dissect_smb_server_type_flags(
tvb, offset, pinfo, tree, NULL, TRUE);
/* OS version string (See "OSVERSIONINFO Structure" on MSDN) */
os_major_ver = tvb_get_guint8(tvb, offset);
os_minor_ver = tvb_get_guint8(tvb, offset+1);
SET_WINDOWS_VERSION_STRING(os_major_ver, os_minor_ver, windows_version);
proto_tree_add_string(tree, hf_windows_version, tvb, offset, 2, windows_version);
/* OS major version */
proto_tree_add_item(tree, hf_os_major, tvb, offset, 1, ENC_LITTLE_ENDIAN);
offset += 1;
/* OS minor version */
proto_tree_add_item(tree, hf_os_minor, tvb, offset, 1, ENC_LITTLE_ENDIAN);
offset += 1;
/* periodicity (in seconds; convert to milliseconds) */
periodicity = tvb_get_letohs(tvb, offset)*1000;
proto_tree_add_uint_format_value(tree, hf_periodicity, tvb, offset, 2,
periodicity,
"%s",
signed_time_msecs_to_str(pinfo->pool, periodicity));
offset += 2;
/* server name */
host_name = tvb_get_stringz_enc(pinfo->pool, tvb, offset, &namelen, ENC_CP437|ENC_NA);
col_append_fstr(pinfo->cinfo, COL_INFO, " %s", host_name);
proto_tree_add_item(tree, hf_server_name,
tvb, offset, namelen, ENC_ASCII);
offset += namelen;
/* master browser server name or server comment */
namelen = tvb_strsize(tvb, offset);
proto_tree_add_item(tree,
(cmd==BROWSE_DOMAIN_ANNOUNCEMENT)?
hf_mb_server_name : hf_server_comment,
tvb, offset, namelen, ENC_CP437|ENC_NA);
break;
}
return tvb_captured_length(tvb);
}
void
proto_register_smb_browse(void)
{
static hf_register_info hf[] = {
{ &hf_command,
{ "Command", "browser.command", FT_UINT8, BASE_HEX,
VALS(commands), 0, "Browse command opcode", HFILL }},
{ &hf_update_count,
{ "Update Count", "browser.update_count", FT_UINT8, BASE_DEC,
NULL, 0, "Browse Update Count", HFILL }},
{ &hf_periodicity,
{ "Update Periodicity", "browser.period", FT_UINT32, BASE_DEC,
NULL, 0, "Update Periodicity in ms", HFILL }},
{ &hf_server_name,
{ "Server Name", "browser.server", FT_STRING, BASE_NONE,
NULL, 0, "BROWSE Server Name", HFILL }},
{ &hf_mb_server_name,
{ "Master Browser Server Name", "browser.mb_server", FT_STRING, BASE_NONE,
NULL, 0, "BROWSE Master Browser Server Name", HFILL }},
{ &hf_mb_reset_command,
{ "ResetBrowserState Command", "browser.reset_cmd", FT_UINT8,
BASE_HEX, VALS(resetbrowserstate_command_names), 0,
NULL, HFILL }},
{ &hf_mb_reset_demote,
{ "Demote LMB", "browser.reset_cmd.demote", FT_BOOLEAN,
8, TFS(&tfs_demote_to_backup), 0x01, NULL, HFILL}},
{ &hf_mb_reset_flush,
{ "Flush Browse List", "browser.reset_cmd.flush", FT_BOOLEAN,
8, TFS(&tfs_flush_browse_list), 0x02, NULL, HFILL}},
{ &hf_mb_reset_stop,
{ "Stop Being LMB", "browser.reset_cmd.stop_lmb", FT_BOOLEAN,
8, TFS(&tfs_stop_being_lmb), 0x04, NULL, HFILL}},
{ &hf_os_major,
{ "OS Major Version", "browser.os_major", FT_UINT8, BASE_DEC,
NULL, 0, "Operating System Major Version", HFILL }},
{ &hf_os_minor,
{ "OS Minor Version", "browser.os_minor", FT_UINT8, BASE_DEC,
NULL, 0, "Operating System Minor Version", HFILL }},
{ &hf_server_type,
{ "Server Type", "browser.server_type", FT_UINT32, BASE_HEX,
NULL, 0, "Server Type Flags", HFILL }},
{ &hf_server_type_workstation,
{ "Workstation", "browser.server_type.workstation", FT_BOOLEAN, 32,
TFS(&tfs_workstation), 1U<<SERVER_WORKSTATION, "Is This A Workstation?", HFILL }},
{ &hf_server_type_server,
{ "Server", "browser.server_type.server", FT_BOOLEAN, 32,
TFS(&tfs_server), 1U<<SERVER_SERVER, "Is This A Server?", HFILL }},
{ &hf_server_type_sql,
{ "SQL", "browser.server_type.sql", FT_BOOLEAN, 32,
TFS(&tfs_sql), 1U<<SERVER_SQL_SERVER, "Is This A SQL Server?", HFILL }},
{ &hf_server_type_domain,
{ "Domain Controller", "browser.server_type.domain_controller", FT_BOOLEAN, 32,
TFS(&tfs_domain), 1U<<SERVER_DOMAIN_CONTROLLER, "Is This A Domain Controller?", HFILL }},
{ &hf_server_type_backup,
{ "Backup Controller", "browser.server_type.backup_controller", FT_BOOLEAN, 32,
TFS(&tfs_backup), 1U<<SERVER_BACKUP_CONTROLLER, "Is This A Backup Domain Controller?", HFILL }},
{ &hf_server_type_time,
{ "Time Source", "browser.server_type.time", FT_BOOLEAN, 32,
TFS(&tfs_time), 1U<<SERVER_TIME_SOURCE, "Is This A Time Source?", HFILL }},
{ &hf_server_type_apple,
{ "Apple", "browser.server_type.apple", FT_BOOLEAN, 32,
TFS(&tfs_apple), 1U<<SERVER_APPLE_SERVER, "Is This An Apple Server ?", HFILL }},
{ &hf_server_type_novell,
{ "Novell", "browser.server_type.novell", FT_BOOLEAN, 32,
TFS(&tfs_novell), 1U<<SERVER_NOVELL_SERVER, "Is This A Novell Server?", HFILL }},
{ &hf_server_type_member,
{ "Member", "browser.server_type.member", FT_BOOLEAN, 32,
TFS(&tfs_member), 1U<<SERVER_DOMAIN_MEMBER_SERVER, "Is This A Domain Member Server?", HFILL }},
{ &hf_server_type_print,
{ "Print", "browser.server_type.print", FT_BOOLEAN, 32,
TFS(&tfs_print), 1U<<SERVER_PRINT_QUEUE_SERVER, "Is This A Print Server?", HFILL }},
{ &hf_server_type_dialin,
{ "Dialin", "browser.server_type.dialin", FT_BOOLEAN, 32,
TFS(&tfs_dialin), 1U<<SERVER_DIALIN_SERVER, "Is This A Dialin Server?", HFILL }},
{ &hf_server_type_xenix,
{ "Xenix", "browser.server_type.xenix", FT_BOOLEAN, 32,
TFS(&tfs_xenix), 1U<<SERVER_XENIX_SERVER, "Is This A Xenix Server?", HFILL }},
{ &hf_server_type_ntw,
{ "NT Workstation", "browser.server_type.ntw", FT_BOOLEAN, 32,
TFS(&tfs_ntw), 1U<<SERVER_NT_WORKSTATION, "Is This A NT Workstation?", HFILL }},
{ &hf_server_type_wfw,
{ "WfW", "browser.server_type.wfw", FT_BOOLEAN, 32,
TFS(&tfs_wfw), 1U<<SERVER_WINDOWS_FOR_WORKGROUPS, "Is This A Windows For Workgroups Server?", HFILL }},
{ &hf_server_type_nts,
{ "NT Server", "browser.server_type.nts", FT_BOOLEAN, 32,
TFS(&tfs_nts), 1U<<SERVER_NT_SERVER, "Is This A NT Server?", HFILL }},
{ &hf_server_type_potentialb,
{ "Potential Browser", "browser.server_type.browser.potential", FT_BOOLEAN, 32,
TFS(&tfs_potentialb), 1U<<SERVER_POTENTIAL_BROWSER, "Is This A Potential Browser?", HFILL }},
{ &hf_server_type_backupb,
{ "Backup Browser", "browser.server_type.browser.backup", FT_BOOLEAN, 32,
TFS(&tfs_backupb), 1U<<SERVER_BACKUP_BROWSER, "Is This A Backup Browser?", HFILL }},
{ &hf_server_type_masterb,
{ "Master Browser", "browser.server_type.browser.master", FT_BOOLEAN, 32,
TFS(&tfs_masterb), 1U<<SERVER_MASTER_BROWSER, "Is This A Master Browser?", HFILL }},
{ &hf_server_type_domainmasterb,
{ "Domain Master Browser", "browser.server_type.browser.domain_master", FT_BOOLEAN, 32,
TFS(&tfs_domainmasterb), 1U<<SERVER_DOMAIN_MASTER_BROWSER, "Is This A Domain Master Browser?", HFILL }},
{ &hf_server_type_osf,
{ "OSF", "browser.server_type.osf", FT_BOOLEAN, 32,
TFS(&tfs_osf), 1U<<SERVER_OSF, "Is This An OSF server ?", HFILL }},
{ &hf_server_type_vms,
{ "VMS", "browser.server_type.vms", FT_BOOLEAN, 32,
TFS(&tfs_vms), 1U<<SERVER_VMS, "Is This A VMS Server?", HFILL }},
{ &hf_server_type_w95,
{ "Windows 95+", "browser.server_type.w95", FT_BOOLEAN, 32,
TFS(&tfs_w95), 1U<<SERVER_WINDOWS_95, "Is This A Windows 95 or above server?", HFILL }},
{ &hf_server_type_dfs,
{ "DFS", "browser.server_type.dfs", FT_BOOLEAN, 32,
TFS(&tfs_dfs), 1U<<SERVER_DFS_SERVER, "Is This A DFS server?", HFILL }},
{ &hf_server_type_local,
{ "Local", "browser.server_type.local", FT_BOOLEAN, 32,
TFS(&tfs_local), 1U<<SERVER_LOCAL_LIST_ONLY, "Is This A Local List Only request?", HFILL }},
{ &hf_server_type_domainenum,
{ "Domain Enum", "browser.server_type.domainenum", FT_BOOLEAN, 32,
TFS(&tfs_domainenum), 1U<<SERVER_DOMAIN_ENUM, "Is This A Domain Enum request?", HFILL }},
{ &hf_election_version,
{ "Election Version", "browser.election.version", FT_UINT8, BASE_DEC,
NULL, 0, NULL, HFILL }},
{ &hf_proto_major,
{ "Browser Protocol Major Version", "browser.proto_major", FT_UINT8, BASE_DEC,
NULL, 0, NULL, HFILL }},
{ &hf_proto_minor,
{ "Browser Protocol Minor Version", "browser.proto_minor", FT_UINT8, BASE_DEC,
NULL, 0, NULL, HFILL }},
{ &hf_sig_const,
{ "Signature", "browser.sig", FT_UINT16, BASE_HEX,
NULL, 0, "Signature Constant", HFILL }},
{ &hf_server_comment,
{ "Host Comment", "browser.comment", FT_STRINGZ, BASE_NONE,
NULL, 0, "Server Comment", HFILL }},
{ &hf_unused_flags,
{ "Unused flags", "browser.unused", FT_UINT8, BASE_HEX,
NULL, 0, "Unused/unknown flags", HFILL }},
{ &hf_response_computer_name,
{ "Response Computer Name", "browser.response_computer_name", FT_STRINGZ, BASE_NONE,
NULL, 0, NULL, HFILL }},
{ &hf_election_criteria,
{ "Election Criteria", "browser.election.criteria", FT_UINT32, BASE_HEX,
NULL, 0, NULL, HFILL }},
{ &hf_election_desire,
{ "Election Desire", "browser.election.desire", FT_UINT8, BASE_HEX,
NULL, 0, NULL, HFILL }},
{ &hf_election_desire_flags_backup,
{ "Backup", "browser.election.desire.backup", FT_BOOLEAN, 8,
TFS(&tfs_desire_backup), 1U<<DESIRE_BACKUP, "Is this a backup server", HFILL }},
{ &hf_election_desire_flags_standby,
{ "Standby", "browser.election.desire.standby", FT_BOOLEAN, 8,
TFS(&tfs_desire_standby), 1U<<DESIRE_STANDBY, "Is this a standby server?", HFILL }},
{ &hf_election_desire_flags_master,
{ "Master", "browser.election.desire.master", FT_BOOLEAN, 8,
TFS(&tfs_desire_master), 1U<<DESIRE_MASTER, "Is this a master server", HFILL }},
{ &hf_election_desire_flags_domain_master,
{ "Domain Master", "browser.election.desire.domain_master", FT_BOOLEAN, 8,
TFS(&tfs_desire_domain_master), 1U<<DESIRE_DOMAIN_MASTER, "Is this a domain master", HFILL }},
{ &hf_election_desire_flags_wins,
{ "WINS", "browser.election.desire.wins", FT_BOOLEAN, 8,
TFS(&tfs_desire_wins), 1U<<DESIRE_WINS, "Is this a WINS server", HFILL }},
{ &hf_election_desire_flags_nt,
{ "NT", "browser.election.desire.nt", FT_BOOLEAN, 8,
TFS(&tfs_desire_nt), 1U<<DESIRE_NT, "Is this a NT server", HFILL }},
#if 0
{ &hf_election_revision,
{ "Election Revision", "browser.election.revision", FT_UINT16, BASE_DEC,
NULL, 0, NULL, HFILL }},
#endif
{ &hf_election_os,
{ "Election OS", "browser.election.os", FT_UINT8, BASE_HEX,
NULL, 0, NULL, HFILL }},
{ &hf_election_os_wfw,
{ "WfW", "browser.election.os.wfw", FT_BOOLEAN, 8,
TFS(&tfs_os_wfw), 1U<<OS_WFW, "Is this a WfW host?", HFILL }},
{ &hf_election_os_ntw,
{ "NT Workstation", "browser.election.os.ntw", FT_BOOLEAN, 8,
TFS(&tfs_os_ntw), 1U<<OS_NTW, "Is this a NT Workstation?", HFILL }},
{ &hf_election_os_nts,
{ "NT Server", "browser.election.os.nts", FT_BOOLEAN, 8,
TFS(&tfs_os_nts), 1U<<OS_NTS, "Is this a NT Server?", HFILL }},
{ &hf_server_uptime,
{ "Uptime", "browser.uptime", FT_UINT32, BASE_DEC,
NULL, 0, "Server uptime in ms", HFILL }},
{ &hf_backup_count,
{ "Backup List Requested Count", "browser.backup.count", FT_UINT8, BASE_DEC,
NULL, 0, NULL, HFILL }},
{ &hf_backup_token,
{ "Backup Request Token", "browser.backup.token", FT_UINT32, BASE_DEC,
NULL, 0, "Backup requested/response token", HFILL }},
{ &hf_backup_server,
{ "Backup Server", "browser.backup.server", FT_STRING, BASE_NONE,
NULL, 0, "Backup Server Name", HFILL }},
{ &hf_browser_to_promote,
{ "Browser to Promote", "browser.browser_to_promote", FT_STRINGZ, BASE_NONE,
NULL, 0, NULL, HFILL }},
{ &hf_windows_version,
{ "Windows version", "browser.windows_version", FT_STRING, BASE_NONE,
NULL, 0, NULL, HFILL }},
{ &hf_mysterious_field,
{ "Mysterious Field", "browser.mysterious_field", FT_UINT32, BASE_HEX,
NULL, 0, NULL, HFILL }},
};
static gint *ett[] = {
&ett_browse,
&ett_browse_flags,
&ett_browse_election_criteria,
&ett_browse_election_os,
&ett_browse_election_desire,
&ett_browse_reset_cmd_flags,
};
proto_smb_browse = proto_register_protocol("Microsoft Windows Browser Protocol",
"BROWSER", "browser");
proto_register_field_array(proto_smb_browse, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
register_dissector("mailslot_browse", dissect_mailslot_browse,
proto_smb_browse);
register_dissector("mailslot_lanman", dissect_mailslot_lanman,
proto_smb_browse);
}
/*
* Editor modelines - https://www.wireshark.org/tools/modelines.html
*
* Local variables:
* c-basic-offset: 8
* tab-width: 8
* indent-tabs-mode: t
* End:
*
* vi: set shiftwidth=8 tabstop=8 noexpandtab:
* :indentSize=8:tabSize=8:noTabs=false:
*/