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wireshark/packet-smb-pipe.c

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/* packet-smb-pipe.c
* Routines for SMB named pipe packet dissection
* Copyright 1999, Richard Sharpe <rsharpe@ns.aus.com>
*
* $Id: packet-smb-pipe.c,v 1.21 2001/03/22 00:50:44 guy Exp $
*
* Ethereal - Network traffic analyzer
* By Gerald Combs <gerald@zing.org>
* Copyright 1998 Gerald Combs
*
* Copied from packet-pop.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.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <stdio.h>
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif
#include <time.h>
#include <string.h>
#include <glib.h>
#include <ctype.h>
#include "packet.h"
#include "conversation.h"
#include "smb.h"
#include "alignment.h"
#include "strutil.h"
#include "packet-smb-pipe.h"
static int proto_smb_lanman = -1;
static gint ett_lanman = -1;
static gint ett_lanman_servers = -1;
static gint ett_lanman_server = -1;
static gint ett_lanman_shares = -1;
static gint ett_lanman_share = -1;
static gint ett_lanman_flags = -1;
/*
* See
*
* ftp://ftp.microsoft.com/developr/drg/CIFS/cifsrap2.txt
*
* among other documents.
*/
/*
* The following data structure describes the LANMAN requests we understand
*
* Simply fill in the number, name, and parameter names if you know them
* Try to keep them in order
*
* We will extend this data structure as we try to decode more ...
*/
struct lanman_desc {
int lanman_num;
char *lanman_name;
char **req;
char **req_data; /* Hmmm, not flexible enough */
char **resp;
char **resp_data;
};
static char *lm_params_req_0[] = {"Detail Level", "Return Buffer Size", NULL};
static char *lm_params_req_1[] = {"Share Name", "Detail Level", "Receive Buffer Size", NULL};
static char *lm_params_resp_1[] = {"Returned Data Len", NULL};
static char *lm_params_req_13[] = {"Detail Level", "Receive Buffer Size", NULL};
static char *lm_params_req_56[] = {"User Name", "Detail Level", "Receive Buffer Size", NULL};
static char *lm_params_req_104[] = {"Detail Level", "Return Buffer Size", "Server Type", "Domain", NULL};
static char *lm_params_req_132[] = {"Reserved1", "Reserved2", "Detail Level", "UserInfoStruct?", "Length of UStruct", "Receive Buffer Size", NULL};
static char *lm_params_req_133[] = {"Reserved1", "Reserved2", "Detail Level", "UserInfoStruct?", "Length of UStruct", "Receive Buffer Size", NULL};
static char *lm_null_params[] = {NULL};
struct lanman_desc lmd[] = {
{0, "NetShareEnum", lm_params_req_0, lm_null_params, lm_null_params, lm_null_params},
{1, "NetShareGetInfo", lm_params_req_1, lm_null_params, lm_params_resp_1, lm_null_params},
{13, "NetServerGetInfo", lm_params_req_13, lm_null_params, lm_null_params, lm_null_params},
{52, "NetGroupGetUsers", lm_null_params, lm_null_params, lm_null_params, lm_null_params},
{56, "NetUserGetInfo", lm_params_req_56, lm_null_params, lm_null_params, lm_null_params},
{59, "NetUserGetGroups", lm_null_params, lm_null_params, lm_null_params, lm_null_params},
{63, "NetWkstaGetInfo", lm_null_params, lm_null_params, lm_null_params, lm_null_params},
{69, "DOSPrintQEnum", lm_null_params, lm_null_params, lm_null_params, lm_null_params},
{70, "DOSPrintQGetInfo", lm_null_params, lm_null_params, lm_null_params, lm_null_params},
{74, "WPrintQueuePause", lm_null_params, lm_null_params, lm_null_params, lm_null_params},
{75, "WPrintQueueResume", lm_null_params, lm_null_params, lm_null_params, lm_null_params},
{76, "WPrintJobEnumerate", lm_null_params, lm_null_params, lm_null_params, lm_null_params},
{77, "WPrintJobGetInfo", lm_null_params, lm_null_params, lm_null_params, lm_null_params},
{81, "RDOSPrintJobDel", lm_null_params, lm_null_params, lm_null_params, lm_null_params},
{82, "RDOSPrintJobPause", lm_null_params, lm_null_params, lm_null_params, lm_null_params},
{83, "RDOSPrintJobResume", lm_null_params, lm_null_params, lm_null_params, lm_null_params},
{84, "WPrintDestEnum", lm_null_params, lm_null_params, lm_null_params, lm_null_params},
{85, "WPrintDestGetInfo", lm_null_params, lm_null_params, lm_null_params, lm_null_params},
{91, "NetRemoteTOD", lm_null_params, lm_null_params, lm_null_params, lm_null_params},
{103, "WPrintQueuePurge", lm_null_params, lm_null_params, lm_null_params, lm_null_params},
{104, "NetServerEnum2", lm_params_req_104, lm_null_params, lm_null_params, lm_null_params},
{105, "WAccessGetUserPerms", lm_null_params, lm_null_params, lm_null_params, lm_null_params},
{115, "SetUserPassword", lm_null_params, lm_null_params, lm_null_params, lm_null_params},
{132, "NetWkstaUserLogon", lm_params_req_132, lm_null_params, lm_null_params, lm_null_params},
{133, "NetWkstaUserLogoff", lm_params_req_133, lm_null_params, lm_null_params, lm_null_params},
{147, "PrintJobInfo", lm_null_params, lm_null_params, lm_null_params, lm_null_params},
{205, "WPrintDriverEnum", lm_null_params, lm_null_params, lm_null_params, lm_null_params},
{206, "WPrintQProcEnum", lm_null_params, lm_null_params, lm_null_params, lm_null_params},
{207, "WPrintPortEnum", lm_null_params, lm_null_params, lm_null_params, lm_null_params},
{214, "SamOEMChangePassword", lm_null_params, lm_null_params, lm_null_params, lm_null_params},
{-1, NULL, NULL,NULL, NULL, NULL}
};
static struct lanman_desc *
find_lanman(int lanman_num)
{
int i = 0;
/* FIXME, This could be more efficient */
while (lmd[i].lanman_num != -1) {
if (lmd[i].lanman_num == lanman_num) {
return &lmd[i];
}
i++;
}
return NULL;
}
#define NETSHAREENUM 0x00 /* 00 */
#define NETSERVERENUM2 0x68 /* 104 */
static void
dissect_server_flags(proto_tree *tree, int offset, int length, int flags)
{
proto_tree_add_text(tree, NullTVB, offset, length, "%s",
decode_boolean_bitfield(flags, 0x0001, length*8, "Workstation", "Not Workstation"));
proto_tree_add_text(tree, NullTVB, offset, length, "%s",
decode_boolean_bitfield(flags, 0x0002, length*8, "Server", "Not Server"));
proto_tree_add_text(tree, NullTVB, offset, length, "%s",
decode_boolean_bitfield(flags, 0x0004, length*8, "SQL Server", "Not SQL Server"));
proto_tree_add_text(tree, NullTVB, offset, length, "%s",
decode_boolean_bitfield(flags, 0x0008, length*8, "Domain Controller", "Not Domain Controller"));
proto_tree_add_text(tree, NullTVB, offset, length, "%s",
decode_boolean_bitfield(flags, 0x0010, length*8, "Backup Controller", "Not Backup Controller"));
proto_tree_add_text(tree, NullTVB, offset, 4, "%s",
decode_boolean_bitfield(flags, 0x0020, length*8, "Time Source", "Not Time Source"));
proto_tree_add_text(tree, NullTVB, offset, length, "%s",
decode_boolean_bitfield(flags, 0x0040, length*8, "Apple Server", "Not Apple Server"));
proto_tree_add_text(tree, NullTVB, offset, length, "%s",
decode_boolean_bitfield(flags, 0x0080, length*8, "Novell Server", "Not Novell Server"));
proto_tree_add_text(tree, NullTVB, offset, length, "%s",
decode_boolean_bitfield(flags, 0x0100, length*8, "Domain Member Server", "Not Domain Member Server"));
proto_tree_add_text(tree, NullTVB, offset, length, "%s",
decode_boolean_bitfield(flags, 0x0200, length*8, "Print Queue Server", "Not Print Queue Server"));
proto_tree_add_text(tree, NullTVB, offset, length, "%s",
decode_boolean_bitfield(flags, 0x0400, length*8, "Dialin Server", "Not Dialin Server"));
proto_tree_add_text(tree, NullTVB, offset, length, "%s",
decode_boolean_bitfield(flags, 0x0800, length*8, "Xenix Server", "Not Xenix Server"));
proto_tree_add_text(tree, NullTVB, offset, length, "%s",
decode_boolean_bitfield(flags, 0x1000, length*8, "NT Workstation", "Not NT Workstation"));
proto_tree_add_text(tree, NullTVB, offset, length, "%s",
decode_boolean_bitfield(flags, 0x2000, length*8, "Windows for Workgroups", "Not Windows for Workgroups"));
proto_tree_add_text(tree, NullTVB, offset, length, "%s",
decode_boolean_bitfield(flags, 0x8000, length*8, "NT Server", "Not NT Server"));
proto_tree_add_text(tree, NullTVB, offset, length, "%s",
decode_boolean_bitfield(flags, 0x10000, length*8, "Potential Browser", "Not Potential Browser"));
proto_tree_add_text(tree, NullTVB, offset, length, "%s",
decode_boolean_bitfield(flags, 0x20000, length*8, "Backup Browser", "Not Backup Browser"));
proto_tree_add_text(tree, NullTVB, offset, length, "%s",
decode_boolean_bitfield(flags, 0x40000, length*8, "Master Browser", "Not Master Browser"));
proto_tree_add_text(tree, NullTVB, offset, length, "%s",
decode_boolean_bitfield(flags, 0x80000, length*8, "Domain Master Browser", "Not Domain Master Browser"));
proto_tree_add_text(tree, NullTVB, offset, length, "%s",
decode_boolean_bitfield(flags, 0x100000, length*8, "OSF", "Not OSF"));
proto_tree_add_text(tree, NullTVB, offset, length, "%s",
decode_boolean_bitfield(flags, 0x200000, length*8, "VMS", "Not VMS"));
proto_tree_add_text(tree, NullTVB, offset, length, "%s",
decode_boolean_bitfield(flags, 0x400000, length*8, "Windows 95 or above", "Not Windows 95 or above"));
proto_tree_add_text(tree, NullTVB, offset, length, "%s",
decode_boolean_bitfield(flags, 0x40000000, length*8, "Local List Only", "Not Local List Only"));
proto_tree_add_text(tree, NullTVB, offset, length, "%s",
decode_boolean_bitfield(flags, 0x80000000, length*8, "Domain Enum", "Not Domain Enum"));
}
static char *p_desc = NULL, *d_desc = NULL, *data = NULL, *params = NULL;
static int p_count, d_count, p_offset, d_offset, d_current = 0, p_current = 0;
static int pd_p_current = 0, pd_d_current = 0, in_params = 0, need_data = 0;
static int lm_ent_count = 0, lm_act_count = 0;
/* Initialize the various data structure */
static void
dissect_transact_engine_init(const u_char *pd, const char *param_desc,
const char *data_desc, int SMB_offset, int ParameterOffset,
int ParameterCount, int DataOffset, int DataCount)
{
d_count = DataCount;
p_count = ParameterCount;
d_offset = 0;
p_offset = 0;
d_current = 0;
p_current = 0;
lm_ent_count = lm_act_count = 0;
pd_d_current = DataOffset;
pd_p_current = ParameterOffset;
in_params = need_data = 0;
if (p_desc) g_free(p_desc);
p_desc = g_malloc(strlen(param_desc) + 1);
strcpy(p_desc, param_desc);
if (d_desc) g_free(d_desc);
d_desc= g_malloc(strlen(data_desc) + 1);
strcpy(d_desc, data_desc);
if (params) g_free(params);
params = g_malloc(p_count);
memcpy(params, pd + ParameterOffset, ParameterCount);
if (data) g_free(data);
data = g_malloc(d_count);
memcpy(data, pd + DataOffset, DataCount);
}
int get_ent_count()
{
return lm_ent_count;
}
int get_act_count()
{
return lm_act_count;
}
static int get_byte_count(const u_char *p_data)
{
int count = 0, off = 0;
while (p_data[off] && isdigit(p_data[off])) {
count = (count * 10) + (int)p_data[off++] - (int)'0';
}
return count;
}
/* Dissect the next item, if Name is null, call it by its data type */
/* We pull out the next item in the appropriate place and display it */
/* We display the parameters first, then the data, then any auxilliary data */
static int
dissect_transact_next(const u_char *pd, char *Name, int dirn, proto_tree *tree)
{
/* guint8 BParam; */
guint16 WParam = 0;
guint32 LParam = 0;
const char /**Bytes,*/ *AsciiZ = NULL;
int bc;
while (1) {
if (p_desc[p_offset] == 0) return 0; /* No more ... */
switch (in_params) {
case 0: /* We are in the params area ... */
switch (p_desc[p_offset++]) {
case 'r':
if (dirn == 0) { /* We need to process the data ... */
need_data = 1;
}
break;
case 'h': /* A WORD parameter received */
if (dirn == 0) {
WParam = GSHORT(pd, pd_p_current);
proto_tree_add_text(tree, NullTVB, pd_p_current, 2, "%s: %u (%04X)", (Name) ? Name : "Returned Word", WParam, WParam);
pd_p_current += 2;
lm_act_count = WParam;
return 1;
}
break;
case 'e': /* An ent count .. */
if (dirn == 0) { /* Only relevant in a response */
WParam = GSHORT(pd, pd_p_current);
proto_tree_add_text(tree, NullTVB, pd_p_current, 2, "%s: (%04X)", (Name) ? Name : "Entry Count", WParam);
pd_p_current += 2;
lm_ent_count = WParam; /* Save this for later retrieval */
return 1;
}
break;
case 'W': /* Word Parameter */
if (dirn == 1) { /* A request ... */
/* Insert a word param */
WParam = GSHORT(pd, pd_p_current);
proto_tree_add_text(tree, NullTVB, pd_p_current, 2, "%s: %u (%04X)", (Name) ? Name : "Word Param", WParam, WParam);
pd_p_current += 2;
return 1; /* That's it here ... we have dissected a param */
}
break;
case 'i': /* A long word is returned */
if (dirn == 0) {
LParam = GWORD(pd, pd_p_current);
proto_tree_add_text(tree, NullTVB, pd_p_current, 4, "%s: %u (0x%08X)", (Name) ? Name : "Returned Long Word", LParam, LParam);
pd_p_current += 2;
return 1;
}
break;
case 'D': /* Double Word parameter */
if (dirn == 1) {
LParam = GWORD(pd, pd_p_current);
proto_tree_add_text(tree, NullTVB, pd_p_current, 4, "%s: %u (0x%08X)", (Name) ? Name : "DWord Param", LParam, LParam);
pd_p_current += 4;
return 1; /* That's it here */
}
break;
case 'g': /* A byte or series of bytes is returned */
if (dirn == 0) {
bc = get_byte_count(p_desc + p_offset);
proto_tree_add_text(tree, NullTVB, pd_p_current, bc, "%s%u: %s", (Name) ? Name : "B", (bc) ? bc : 1, format_text( pd + pd_p_current, (bc) ? bc : 1));
pd_p_current += (bc) ? bc : 1;
return 1;
}
break;
case 'b': /* A byte or series of bytes */
if (dirn == 1) {
bc = get_byte_count(p_desc + p_offset); /* This is not clean */
/*Bytes = g_malloc(bc + 1); / * Is this needed ? */
proto_tree_add_text(tree, NullTVB, pd_p_current, bc, "%s%u: %s", (Name) ? Name : "B", (bc) ? bc : 1, format_text(pd + pd_p_current, (bc) ? bc : 1));
pd_p_current += (bc) ? bc : 1;
return 1; /* That's it here ... */
}
break;
case 'O': /* A null pointer */
if (dirn == 1) {
proto_tree_add_text(tree, NullTVB, pd_p_current, 0, "%s: Null Pointer", (Name) ? Name : "Unknown");
return 1; /* That's it here */
}
break;
case 'z': /* An AsciiZ string */
if (dirn == 1) {
AsciiZ = pd + pd_p_current;
proto_tree_add_text(tree, NullTVB, pd_p_current, strlen(AsciiZ) + 1, "%s: %s", (Name) ? Name : "AsciiZ", AsciiZ);
pd_p_current += strlen(AsciiZ) + 1;
return 1; /* That's it here ... */
}
break;
case 'F': /* One or more pad bytes */
if (dirn == 1) {
bc = get_byte_count(pd);
proto_tree_add_text(tree, NullTVB, pd_p_current, bc, "%s%u: %s", (Name) ? Name : "Pad", bc, format_text(pd + pd_p_current, bc));
pd_p_current += bc;
return 1; /* That's it here */
}
break;
case 'L': /* Receive buffer len: Short */
if (dirn == 1) {
WParam = GSHORT(pd, pd_p_current);
proto_tree_add_text(tree, NullTVB, pd_p_current, 2, "%s: %u (0x%04X)", (Name) ? Name : "Receive Buffer Len", WParam, WParam);
pd_p_current += 2;
return 1; /* That's it here ... */
}
break;
case 's': /* Send buf ... */
if (dirn == 1) {
need_data = 1;
LParam = GWORD(pd, pd_p_current);
proto_tree_add_text(tree, NullTVB, pd_p_current, 4, "%s: %u", (Name) ? Name : "Send Buffer Ptr", LParam);
pd_p_current += 4;
return 1; /* That's it here ... */
}
break;
case 'T':
if (dirn == 1) {
WParam = GSHORT(pd, pd_p_current);
proto_tree_add_text(tree, NullTVB, pd_p_current, 2, "%s: %u", (Name) ? Name : "Send Buffer Len", WParam);
pd_p_current += 2;
return 1;
}
break;
default:
break;
}
break;
case 1: /* We are in the data area ... */
break;
}
}
return 0;
}
static const value_string share_type_vals[] = {
{0, "Directory tree"},
{1, "Printer queue"},
{2, "Communications device"},
{3, "IPC"},
{0, NULL}
};
/*
* Per-frame data needed to dissect replies.
*/
typedef struct {
guint16 FunctionCode;
gboolean is_continuation;
} response_data;
static GMemChunk *lanman_proto_data;
gboolean
dissect_pipe_lanman(const u_char *pd, int offset, frame_data *fd,
proto_tree *parent, proto_tree *tree, struct smb_info si,
int max_data, int SMB_offset, int errcode, int dirn,
const u_char *command, int DataOffset, int DataCount,
int ParameterOffset, int ParameterCount)
{
gboolean is_interim_response;
guint32 loc_offset;
guint16 FunctionCode;
guint16 Level;
guint16 RecvBufLen;
guint32 Flags;
const char *ParameterDescriptor;
const char *ReturnDescriptor;
proto_tree *lanman_tree = NULL, *flags_tree = NULL;
proto_item *ti;
struct lanman_desc *lanman;
guint32 string_offset;
if (DataOffset < 0) {
/* Interim response; we weren't given any data. */
is_interim_response = TRUE;
loc_offset = SMB_offset;
}
else {
/* Offset of the data we should dissect. */
is_interim_response = FALSE;
loc_offset = SMB_offset + ParameterOffset;
}
if (check_col(fd, COL_PROTOCOL))
col_set_str(fd, COL_PROTOCOL, "LANMAN");
if (dirn == 1) { /* The request side */
FunctionCode = GSHORT(pd, loc_offset);
si.request_val -> last_lanman_cmd = FunctionCode;
lanman = find_lanman(FunctionCode);
if (check_col(fd, COL_INFO)) {
if (lanman) {
col_add_fstr(fd, COL_INFO, "%s Request", lanman -> lanman_name);
}
else {
col_add_fstr(fd, COL_INFO, "Unknown LANMAN Request: %u", FunctionCode);
}
}
if (tree) {
ti = proto_tree_add_item(parent, proto_smb_lanman, NullTVB, loc_offset, ParameterCount, FALSE);
lanman_tree = proto_item_add_subtree(ti, ett_lanman);
if (lanman) {
proto_tree_add_text(lanman_tree, NullTVB, loc_offset, 2, "Function Code: %s", lanman -> lanman_name);
}
else {
proto_tree_add_text(lanman_tree, NullTVB, loc_offset, 2, "Function Code: Unknown LANMAN Request: %u", FunctionCode);
}
}
loc_offset += 2;
ParameterDescriptor = pd + loc_offset;
/* Now, save these for later */
si.request_val -> trans_response_seen = 0;
if (si.request_val -> last_param_descrip)
g_free(si.request_val -> last_param_descrip);
si.request_val -> last_param_descrip = g_malloc(strlen(ParameterDescriptor) + 1);
if (si.request_val -> last_param_descrip)
strcpy(si.request_val -> last_param_descrip, ParameterDescriptor);
if (tree) {
proto_tree_add_text(lanman_tree, NullTVB, loc_offset, strlen(ParameterDescriptor) + 1, "Parameter Descriptor: %s", ParameterDescriptor);
}
loc_offset += strlen(ParameterDescriptor) + 1;
ReturnDescriptor = pd + loc_offset;
if (si.request_val -> last_data_descrip)
g_free(si.request_val -> last_data_descrip);
si.request_val -> last_data_descrip = g_malloc(strlen(ReturnDescriptor) + 1);
if (si.request_val -> last_data_descrip)
strcpy(si.request_val -> last_data_descrip, ReturnDescriptor);
if (tree) {
proto_tree_add_text(lanman_tree, NullTVB, loc_offset, strlen(ReturnDescriptor) + 1, "Return Descriptor: %s", ReturnDescriptor);
}
loc_offset += strlen(ReturnDescriptor) + 1;
switch (FunctionCode) {
case NETSHAREENUM: /* Never decode this at the moment ... */
Level = GSHORT(pd, loc_offset);
if (tree) {
proto_tree_add_text(lanman_tree, NullTVB, loc_offset, 2, "Detail Level: %u", Level);
}
loc_offset += 2;
RecvBufLen = GSHORT(pd, loc_offset);
if (tree) {
proto_tree_add_text(lanman_tree, NullTVB, loc_offset, 2, "Receive Buffer Length: %u", RecvBufLen);
}
loc_offset += 2;
break;
case NETSERVERENUM2: /* Process a NetServerEnum2 */
Level = GSHORT(pd, loc_offset);
si.request_val -> last_level = Level;
if (tree) {
proto_tree_add_text(lanman_tree, NullTVB, loc_offset, 2, "Info Detail Level: %u", Level);
}
loc_offset += 2;
RecvBufLen = GSHORT(pd, loc_offset);
if (tree) {
proto_tree_add_text(lanman_tree, NullTVB, loc_offset, 2, "Receive Buffer Length: %u", RecvBufLen);
}
loc_offset += 2;
Flags = GWORD(pd, loc_offset);
if (tree) {
ti = proto_tree_add_text(lanman_tree, NullTVB, loc_offset, 4, "Server Types Required: 0x%08X", Flags);
flags_tree = proto_item_add_subtree(ti, ett_lanman_flags);
dissect_server_flags(flags_tree, loc_offset, 4, Flags);
}
loc_offset += 4;
return TRUE;
break;
default: /* Just try to handle what is there ... */
if (tree) {
int i = 0; /* Counter for names below */
char *name = NULL;
dissect_transact_engine_init(pd, ParameterDescriptor, ReturnDescriptor,SMB_offset, loc_offset, ParameterCount, DataOffset, DataCount);
if (lanman) name = lanman -> req[i]; /* Must be OK ... */
while (dissect_transact_next(pd, name, dirn, lanman_tree))
if (name) name = lanman -> req[++i];
}
break;
}
}
else { /* dirn == 0, response */
response_data *proto_data;
guint16 Status;
guint16 Convert;
guint16 EntCount;
guint16 AvailCount;
int i;
proto_tree *server_tree = NULL, *flags_tree = NULL, *share_tree = NULL;
/* Is there any per-frame LANMAN data for this frame? */
proto_data = p_get_proto_data(fd, proto_smb_lanman);
if (proto_data == NULL) {
/* No. Allocate some, and set it up. */
proto_data = g_mem_chunk_alloc(lanman_proto_data);
proto_data->FunctionCode = si.request_val -> last_lanman_cmd;
/*
* If we've already seen a response to the request, this must
* be a continuation of that response.
*/
proto_data->is_continuation = si.request_val -> trans_response_seen;
/*
* Attach it to the frame.
*/
p_add_proto_data(fd, proto_smb_lanman, proto_data);
}
FunctionCode = proto_data->FunctionCode;
/*
* If we have already seen the response to this transact, simply
* record it as a continuation ...
*/
if (proto_data->is_continuation) {
if (check_col(fd, COL_INFO)) {
col_set_str(fd, COL_INFO, "Transact Continuation");
}
if (tree) {
ti = proto_tree_add_item(parent, proto_smb_lanman, NullTVB, loc_offset, END_OF_FRAME, FALSE);
lanman_tree = proto_item_add_subtree(ti, ett_lanman);
proto_tree_add_text(lanman_tree, NullTVB, loc_offset, END_OF_FRAME, "Payload: %s", format_text(pd + loc_offset, END_OF_FRAME));
}
return TRUE;
}
si.request_val -> trans_response_seen = 1;
lanman = find_lanman(FunctionCode);
if (check_col(fd, COL_INFO)) {
if (lanman) {
col_add_fstr(fd, COL_INFO, "%s %sResponse", lanman -> lanman_name,
is_interim_response ? "Interim " : "");
}
else {
col_add_fstr(fd, COL_INFO, "Unknown LANMAN %sResponse: %u",
is_interim_response ? "Interim " : "", FunctionCode);
}
}
if (tree) {
ti = proto_tree_add_item(parent, proto_smb_lanman, NullTVB, loc_offset, END_OF_FRAME, FALSE);
lanman_tree = proto_item_add_subtree(ti, ett_lanman);
if (lanman) {
proto_tree_add_text(lanman_tree, NullTVB, loc_offset, 0, "Function Code: %s", lanman -> lanman_name);
}
else {
proto_tree_add_text(lanman_tree, NullTVB, loc_offset, 0, "Function Code: Unknown LANMAN Response: %u", FunctionCode);
}
}
if (is_interim_response) {
return TRUE; /* no data to dissect */
}
switch (FunctionCode) {
case NETSHAREENUM:
Status = GSHORT(pd, loc_offset);
if (tree) {
proto_tree_add_text(lanman_tree, NullTVB, loc_offset, 2, "Status: %u", Status);
}
loc_offset += 2;
Convert = GSHORT(pd, loc_offset);
if (tree) {
proto_tree_add_text(lanman_tree, NullTVB, loc_offset, 2, "Convert: %u", Convert);
}
loc_offset += 2;
EntCount = GSHORT(pd, loc_offset);
if (tree) {
proto_tree_add_text(lanman_tree, NullTVB, loc_offset, 2, "Entry Count: %u", EntCount);
}
loc_offset += 2;
AvailCount = GSHORT(pd, loc_offset);
if (tree) {
proto_tree_add_text(lanman_tree, NullTVB, loc_offset, 2, "Available Entries: %u", AvailCount);
}
loc_offset += 2;
if (tree) {
ti = proto_tree_add_text(lanman_tree, NullTVB, loc_offset, AvailCount * 20, "Available Shares");
share_tree = proto_item_add_subtree(ti, ett_lanman_shares);
}
for (i = 1; i <= EntCount; i++) {
const gchar *Share = pd + loc_offset;
guint32 Flags;
const gchar *Comment;
proto_tree *share = NULL;
proto_item *ti = NULL;
if (tree) {
ti = proto_tree_add_text(share_tree, NullTVB, loc_offset, 20, "Share %s", Share);
share = proto_item_add_subtree(ti, ett_lanman_share);
}
if (tree) {
proto_tree_add_text(share, NullTVB, loc_offset, 13, "Share Name: %s", Share);
}
loc_offset += 13;
loc_offset += 1; /* Pad byte ... */
Flags = GSHORT(pd, loc_offset);
if (tree) {
proto_tree_add_text(share, NullTVB, loc_offset, 2, "Share Type: %s",
val_to_str(Flags, share_type_vals, "Unknown (%u)"));
}
loc_offset += 2;
/* XXX - should check whether all of the string is within the
frame. */
string_offset = SMB_offset + DataOffset + (GWORD(pd, loc_offset) & 0xFFFF) - Convert;
if (IS_DATA_IN_FRAME(string_offset))
Comment = pd + string_offset;
else
Comment = "<String goes past end of frame>";
if (tree) {
proto_tree_add_text(share, NullTVB, loc_offset, 4, "Share Comment: %s", Comment);
}
loc_offset += 4;
}
break;
case NETSERVERENUM2:
Status = GSHORT(pd, loc_offset);
if (tree) {
proto_tree_add_text(lanman_tree, NullTVB, loc_offset, 2, "Status: %u", Status);
}
loc_offset += 2;
Convert = GSHORT(pd, loc_offset);
if (tree) {
proto_tree_add_text(lanman_tree, NullTVB, loc_offset, 2, "Convert: %u", Convert);
}
loc_offset += 2;
EntCount = GSHORT(pd, loc_offset);
if (tree) {
proto_tree_add_text(lanman_tree, NullTVB, loc_offset, 2, "Entry Count: %u", EntCount);
}
loc_offset += 2;
AvailCount = GSHORT(pd, loc_offset);
if (tree) {
proto_tree_add_text(lanman_tree, NullTVB, loc_offset, 2, "Available Entries: %u", AvailCount);
}
loc_offset += 2;
if (tree) {
ti = proto_tree_add_text(lanman_tree, NullTVB, loc_offset, 26 * AvailCount, "Servers");
if (ti == NULL) {
printf("Null value returned from proto_tree_add_text\n");
exit(1);
}
server_tree = proto_item_add_subtree(ti, ett_lanman_servers);
}
/* Make sure we don't go past the end of the capture buffer */
for (i = 1; (i <= EntCount) && ((pi.captured_len - loc_offset) >= 16); i++) {
const gchar *Server = pd + loc_offset;
gint8 ServerMajor;
guint ServerMinor;
guint32 ServerFlags;
const gchar *Comment;
proto_tree *server = NULL;
proto_item *ti;
if (tree) {
ti = proto_tree_add_text(server_tree, NullTVB, loc_offset,
(si.request_val -> last_level) ? 26 : 16,
"Server %s", Server);
server = proto_item_add_subtree(ti, ett_lanman_server);
}
if (tree) {
proto_tree_add_text(server, NullTVB, loc_offset, 16, "Server Name: %s", Server);
}
loc_offset += 16;
if (si.request_val -> last_level) { /* Print out the rest of the info */
ServerMajor = GBYTE(pd, loc_offset);
if (tree) {
proto_tree_add_text(server, NullTVB, loc_offset, 1, "Major Version: %u", ServerMajor);
}
loc_offset += 1;
ServerMinor = GBYTE(pd, loc_offset);
if (tree) {
proto_tree_add_text(server, NullTVB, loc_offset, 1, "Minor Version: %u", ServerMinor);
}
loc_offset += 1;
ServerFlags = GWORD(pd, loc_offset);
if (tree) {
ti = proto_tree_add_text(server, NullTVB, loc_offset, 4, "Server Type: 0x%08X", ServerFlags);
flags_tree = proto_item_add_subtree(ti, ett_lanman_flags);
dissect_server_flags(flags_tree, loc_offset, 4, ServerFlags);
}
loc_offset += 4;
/* XXX - should check whether all of the string is within the
frame. */
string_offset = SMB_offset + DataOffset + (GWORD(pd, loc_offset) & 0xFFFF) - Convert;
if (IS_DATA_IN_FRAME(string_offset))
Comment = pd + string_offset;
else
Comment = "<String goes past end of frame>";
if (tree) {
proto_tree_add_text(server, NullTVB, loc_offset, 4, "Server Comment: %s", Comment);
}
loc_offset += 4;
}
}
break;
default:
Status = GSHORT(pd, loc_offset);
if (tree) {
proto_tree_add_text(lanman_tree, NullTVB, loc_offset, 2, "Status: %u", Status);
}
loc_offset += 2;
Convert = GSHORT(pd, loc_offset);
if (tree) {
proto_tree_add_text(lanman_tree, NullTVB, loc_offset, 2, "Convert: %u", Convert);
}
loc_offset += 2;
if (tree) {
int i = 0;
char *name = NULL;
dissect_transact_engine_init(pd, si.request_val -> last_param_descrip, si.request_val -> last_data_descrip, SMB_offset, loc_offset, ParameterCount, DataOffset, DataCount);
if (lanman) name = lanman -> resp[i];
while (dissect_transact_next(pd, name, dirn, lanman_tree))
if (name) name = lanman -> resp[++i];
}
return TRUE;
break;
}
}
return FALSE;
}
gboolean
dissect_pipe_smb(const u_char *pd, int offset, frame_data *fd, proto_tree *parent, proto_tree *tree, struct smb_info si, int max_data, int SMB_offset, int errcode, int dirn, const u_char *command, int DataOffset, int DataCount, int ParameterOffset, int ParameterCount)
{
if (!proto_is_protocol_enabled(proto_smb_lanman))
return FALSE;
if (command != NULL && strcmp(command, "LANMAN") == 0) {
/* Try to decode a LANMAN */
return dissect_pipe_lanman(pd, offset, fd, parent, tree, si, max_data,
SMB_offset, errcode, dirn, command, DataOffset,
DataCount, ParameterOffset, ParameterCount);
}
return FALSE;
}
static void
pipe_lanman_init_protocol(void)
{
if (lanman_proto_data != NULL)
g_mem_chunk_destroy(lanman_proto_data);
lanman_proto_data = g_mem_chunk_new("lanman_proto_data",
sizeof(response_data),
100 * sizeof(response_data),
G_ALLOC_AND_FREE);
}
void
register_proto_smb_pipe( void){
static gint *ett[] = {
&ett_lanman,
&ett_lanman_servers,
&ett_lanman_server,
&ett_lanman_shares,
&ett_lanman_share,
&ett_lanman_flags
};
proto_smb_lanman = proto_register_protocol(
"Microsoft Windows Lanman Protocol", "LANMAN", "lanman");
proto_register_subtree_array(ett, array_length(ett));
register_init_routine(&pipe_lanman_init_protocol);
}
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