print-smb.c

来自「TCPDUMP的C语言源代码,是在数据链路层的应用」· C语言 代码 · 共 1,511 行 · 第 1/3 页

/*
 * Copyright (C) Andrew Tridgell 1995-1999
 *
 * This software may be distributed either under the terms of the
 * BSD-style license that accompanies tcpdump or the GNU GPL version 2
 * or later
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#ifndef lint
static const char rcsid[] _U_ =
     "@(#) $Header: /tcpdump/master/tcpdump/print-smb.c,v 1.46.2.1 2007-12-09 00:31:35 guy Exp $";
#endif

#include <tcpdump-stdinc.h>

#include <stdio.h>
#include <string.h>

#include "interface.h"
#include "extract.h"
#include "smb.h"

static int request = 0;
static int unicodestr = 0;

const u_char *startbuf = NULL;

struct smbdescript {
    const char *req_f1;
    const char *req_f2;
    const char *rep_f1;
    const char *rep_f2;
    void (*fn)(const u_char *, const u_char *, const u_char *, const u_char *);
};

struct smbdescriptint {
    const char *req_f1;
    const char *req_f2;
    const char *rep_f1;
    const char *rep_f2;
    void (*fn)(const u_char *, const u_char *, int, int);
};

struct smbfns
{
    int id;
    const char *name;
    int flags;
    struct smbdescript descript;
};

struct smbfnsint
{
    int id;
    const char *name;
    int flags;
    struct smbdescriptint descript;
};

#define DEFDESCRIPT	{ NULL, NULL, NULL, NULL, NULL }

#define FLG_CHAIN	(1 << 0)

static struct smbfns *
smbfind(int id, struct smbfns *list)
{
    int sindex;

    for (sindex = 0; list[sindex].name; sindex++)
	if (list[sindex].id == id)
	    return(&list[sindex]);

    return(&list[0]);
}

static struct smbfnsint *
smbfindint(int id, struct smbfnsint *list)
{
    int sindex;

    for (sindex = 0; list[sindex].name; sindex++)
	if (list[sindex].id == id)
	    return(&list[sindex]);

    return(&list[0]);
}

static void
trans2_findfirst(const u_char *param, const u_char *data, int pcnt, int dcnt)
{
    const char *fmt;

    if (request)
	fmt = "Attribute=[A]\nSearchCount=[d]\nFlags=[w]\nLevel=[dP4]\nFile=[S]\n";
    else
	fmt = "Handle=[w]\nCount=[d]\nEOS=[w]\nEoffset=[d]\nLastNameOfs=[w]\n";

    smb_fdata(param, fmt, param + pcnt, unicodestr);
    if (dcnt) {
	printf("data:\n");
	print_data(data, dcnt);
    }
}

static void
trans2_qfsinfo(const u_char *param, const u_char *data, int pcnt, int dcnt)
{
    static int level = 0;
    const char *fmt="";

    if (request) {
	TCHECK2(*param, 2);
	level = EXTRACT_LE_16BITS(param);
	fmt = "InfoLevel=[d]\n";
	smb_fdata(param, fmt, param + pcnt, unicodestr);
    } else {
	switch (level) {
	case 1:
	    fmt = "idFileSystem=[W]\nSectorUnit=[D]\nUnit=[D]\nAvail=[D]\nSectorSize=[d]\n";
	    break;
	case 2:
	    fmt = "CreationTime=[T2]VolNameLength=[lb]\nVolumeLabel=[c]\n";
	    break;
	case 0x105:
	    fmt = "Capabilities=[W]\nMaxFileLen=[D]\nVolNameLen=[lD]\nVolume=[C]\n";
	    break;
	default:
	    fmt = "UnknownLevel\n";
	    break;
	}
	smb_fdata(data, fmt, data + dcnt, unicodestr);
    }
    if (dcnt) {
	printf("data:\n");
	print_data(data, dcnt);
    }
    return;
trunc:
    printf("[|SMB]");
    return;
}

struct smbfnsint trans2_fns[] = {
    { 0, "TRANSACT2_OPEN", 0,
	{ "Flags2=[w]\nMode=[w]\nSearchAttrib=[A]\nAttrib=[A]\nTime=[T2]\nOFun=[w]\nSize=[D]\nRes=([w, w, w, w, w])\nPath=[S]",
	  NULL,
	  "Handle=[d]\nAttrib=[A]\nTime=[T2]\nSize=[D]\nAccess=[w]\nType=[w]\nState=[w]\nAction=[w]\nInode=[W]\nOffErr=[d]\n|EALength=[d]\n",
	  NULL, NULL }},
    { 1, "TRANSACT2_FINDFIRST", 0,
	{ NULL, NULL, NULL, NULL, trans2_findfirst }},
    { 2, "TRANSACT2_FINDNEXT", 0, DEFDESCRIPT },
    { 3, "TRANSACT2_QFSINFO", 0,
	{ NULL, NULL, NULL, NULL, trans2_qfsinfo }},
    { 4, "TRANSACT2_SETFSINFO", 0, DEFDESCRIPT },
    { 5, "TRANSACT2_QPATHINFO", 0, DEFDESCRIPT },
    { 6, "TRANSACT2_SETPATHINFO", 0, DEFDESCRIPT },
    { 7, "TRANSACT2_QFILEINFO", 0, DEFDESCRIPT },
    { 8, "TRANSACT2_SETFILEINFO", 0, DEFDESCRIPT },
    { 9, "TRANSACT2_FSCTL", 0, DEFDESCRIPT },
    { 10, "TRANSACT2_IOCTL", 0, DEFDESCRIPT },
    { 11, "TRANSACT2_FINDNOTIFYFIRST", 0, DEFDESCRIPT },
    { 12, "TRANSACT2_FINDNOTIFYNEXT", 0, DEFDESCRIPT },
    { 13, "TRANSACT2_MKDIR", 0, DEFDESCRIPT },
    { -1, NULL, 0, DEFDESCRIPT }
};


static void
print_trans2(const u_char *words, const u_char *dat, const u_char *buf, const u_char *maxbuf)
{
    u_int bcc;
    static struct smbfnsint *fn = &trans2_fns[0];
    const u_char *data, *param;
    const u_char *w = words + 1;
    const char *f1 = NULL, *f2 = NULL;
    int pcnt, dcnt;

    TCHECK(words[0]);
    if (request) {
	TCHECK2(w[14 * 2], 2);
	pcnt = EXTRACT_LE_16BITS(w + 9 * 2);
	param = buf + EXTRACT_LE_16BITS(w + 10 * 2);
	dcnt = EXTRACT_LE_16BITS(w + 11 * 2);
	data = buf + EXTRACT_LE_16BITS(w + 12 * 2);
	fn = smbfindint(EXTRACT_LE_16BITS(w + 14 * 2), trans2_fns);
    } else {
	if (words[0] == 0) {
	    printf("%s\n", fn->name);
	    printf("Trans2Interim\n");
	    return;
	}
	TCHECK2(w[7 * 2], 2);
	pcnt = EXTRACT_LE_16BITS(w + 3 * 2);
	param = buf + EXTRACT_LE_16BITS(w + 4 * 2);
	dcnt = EXTRACT_LE_16BITS(w + 6 * 2);
	data = buf + EXTRACT_LE_16BITS(w + 7 * 2);
    }

    printf("%s param_length=%d data_length=%d\n", fn->name, pcnt, dcnt);

    if (request) {
	if (words[0] == 8) {
	    smb_fdata(words + 1,
		"Trans2Secondary\nTotParam=[d]\nTotData=[d]\nParamCnt=[d]\nParamOff=[d]\nParamDisp=[d]\nDataCnt=[d]\nDataOff=[d]\nDataDisp=[d]\nHandle=[d]\n",
		maxbuf, unicodestr);
	    return;
	} else {
	    smb_fdata(words + 1,
		"TotParam=[d]\nTotData=[d]\nMaxParam=[d]\nMaxData=[d]\nMaxSetup=[b][P1]\nFlags=[w]\nTimeOut=[D]\nRes1=[w]\nParamCnt=[d]\nParamOff=[d]\nDataCnt=[d]\nDataOff=[d]\nSetupCnt=[b][P1]\n",
		words + 1 + 14 * 2, unicodestr);
	}
	f1 = fn->descript.req_f1;
	f2 = fn->descript.req_f2;
    } else {
	smb_fdata(words + 1,
	    "TotParam=[d]\nTotData=[d]\nRes1=[w]\nParamCnt=[d]\nParamOff=[d]\nParamDisp[d]\nDataCnt=[d]\nDataOff=[d]\nDataDisp=[d]\nSetupCnt=[b][P1]\n",
	    words + 1 + 10 * 2, unicodestr);
	f1 = fn->descript.rep_f1;
	f2 = fn->descript.rep_f2;
    }

    TCHECK2(*dat, 2);
    bcc = EXTRACT_LE_16BITS(dat);
    printf("smb_bcc=%u\n", bcc);
    if (fn->descript.fn)
	(*fn->descript.fn)(param, data, pcnt, dcnt);
    else {
	smb_fdata(param, f1 ? f1 : "Parameters=\n", param + pcnt, unicodestr);
	smb_fdata(data, f2 ? f2 : "Data=\n", data + dcnt, unicodestr);
    }
    return;
trunc:
    printf("[|SMB]");
    return;
}


static void
print_browse(const u_char *param, int paramlen, const u_char *data, int datalen)
{
    const u_char *maxbuf = data + datalen;
    int command;

    TCHECK(data[0]);
    command = data[0];

    smb_fdata(param, "BROWSE PACKET\n|Param ", param+paramlen, unicodestr);

    switch (command) {
    case 0xF:
	data = smb_fdata(data,
	    "BROWSE PACKET:\nType=[B] (LocalMasterAnnouncement)\nUpdateCount=[w]\nRes1=[B]\nAnnounceInterval=[d]\nName=[n2]\nMajorVersion=[B]\nMinorVersion=[B]\nServerType=[W]\nElectionVersion=[w]\nBrowserConstant=[w]\n",
	    maxbuf, unicodestr);
	break;

    case 0x1:
	data = smb_fdata(data,
	    "BROWSE PACKET:\nType=[B] (HostAnnouncement)\nUpdateCount=[w]\nRes1=[B]\nAnnounceInterval=[d]\nName=[n2]\nMajorVersion=[B]\nMinorVersion=[B]\nServerType=[W]\nElectionVersion=[w]\nBrowserConstant=[w]\n",
	    maxbuf, unicodestr);
	break;

    case 0x2:
	data = smb_fdata(data,
	    "BROWSE PACKET:\nType=[B] (AnnouncementRequest)\nFlags=[B]\nReplySystemName=[S]\n",
	    maxbuf, unicodestr);
	break;

    case 0xc:
	data = smb_fdata(data,
	    "BROWSE PACKET:\nType=[B] (WorkgroupAnnouncement)\nUpdateCount=[w]\nRes1=[B]\nAnnounceInterval=[d]\nName=[n2]\nMajorVersion=[B]\nMinorVersion=[B]\nServerType=[W]\nCommentPointer=[W]\nServerName=[S]\n",
	    maxbuf, unicodestr);
	break;

    case 0x8:
	data = smb_fdata(data,
	    "BROWSE PACKET:\nType=[B] (ElectionFrame)\nElectionVersion=[B]\nOSSummary=[W]\nUptime=[(W, W)]\nServerName=[S]\n",
	    maxbuf, unicodestr);
	break;

    case 0xb:
	data = smb_fdata(data,
	    "BROWSE PACKET:\nType=[B] (BecomeBackupBrowser)\nName=[S]\n",
	    maxbuf, unicodestr);
	break;

    case 0x9:
	data = smb_fdata(data,
	    "BROWSE PACKET:\nType=[B] (GetBackupList)\nListCount?=[B]\nToken=[W]\n",
	    maxbuf, unicodestr);
	break;

    case 0xa:
	data = smb_fdata(data,
	    "BROWSE PACKET:\nType=[B] (BackupListResponse)\nServerCount?=[B]\nToken=[W]\n*Name=[S]\n",
	    maxbuf, unicodestr);
	break;

    case 0xd:
	data = smb_fdata(data,
	    "BROWSE PACKET:\nType=[B] (MasterAnnouncement)\nMasterName=[S]\n",
	    maxbuf, unicodestr);
	break;

    case 0xe:
	data = smb_fdata(data,
	    "BROWSE PACKET:\nType=[B] (ResetBrowser)\nOptions=[B]\n", maxbuf, unicodestr);
	break;

    default:
	data = smb_fdata(data, "Unknown Browser Frame ", maxbuf, unicodestr);
	break;
    }
    return;
trunc:
    printf("[|SMB]");
    return;
}


static void
print_ipc(const u_char *param, int paramlen, const u_char *data, int datalen)
{
    if (paramlen)
	smb_fdata(param, "Command=[w]\nStr1=[S]\nStr2=[S]\n", param + paramlen,
	    unicodestr);
    if (datalen)
	smb_fdata(data, "IPC ", data + datalen, unicodestr);
}


static void
print_trans(const u_char *words, const u_char *data1, const u_char *buf, const u_char *maxbuf)
{
    u_int bcc;
    const char *f1, *f2, *f3, *f4;
    const u_char *data, *param;
    const u_char *w = words + 1;
    int datalen, paramlen;

    if (request) {
	TCHECK2(w[12 * 2], 2);
	paramlen = EXTRACT_LE_16BITS(w + 9 * 2);
	param = buf + EXTRACT_LE_16BITS(w + 10 * 2);
	datalen = EXTRACT_LE_16BITS(w + 11 * 2);
	data = buf + EXTRACT_LE_16BITS(w + 12 * 2);
	f1 = "TotParamCnt=[d] \nTotDataCnt=[d] \nMaxParmCnt=[d] \nMaxDataCnt=[d]\nMaxSCnt=[d] \nTransFlags=[w] \nRes1=[w] \nRes2=[w] \nRes3=[w]\nParamCnt=[d] \nParamOff=[d] \nDataCnt=[d] \nDataOff=[d] \nSUCnt=[d]\n";
	f2 = "|Name=[S]\n";
	f3 = "|Param ";
	f4 = "|Data ";
    } else {
	TCHECK2(w[7 * 2], 2);
	paramlen = EXTRACT_LE_16BITS(w + 3 * 2);
	param = buf + EXTRACT_LE_16BITS(w + 4 * 2);
	datalen = EXTRACT_LE_16BITS(w + 6 * 2);
	data = buf + EXTRACT_LE_16BITS(w + 7 * 2);
	f1 = "TotParamCnt=[d] \nTotDataCnt=[d] \nRes1=[d]\nParamCnt=[d] \nParamOff=[d] \nRes2=[d] \nDataCnt=[d] \nDataOff=[d] \nRes3=[d]\nLsetup=[d]\n";
	f2 = "|Unknown ";
	f3 = "|Param ";
	f4 = "|Data ";
    }

    smb_fdata(words + 1, f1, SMBMIN(words + 1 + 2 * words[0], maxbuf),
        unicodestr);

    TCHECK2(*data1, 2);
    bcc = EXTRACT_LE_16BITS(data1);
    printf("smb_bcc=%u\n", bcc);
    if (bcc > 0) {
	smb_fdata(data1 + 2, f2, maxbuf - (paramlen + datalen), unicodestr);

	if (strcmp((const char *)(data1 + 2), "\\MAILSLOT\\BROWSE") == 0) {
	    print_browse(param, paramlen, data, datalen);
	    return;
	}

	if (strcmp((const char *)(data1 + 2), "\\PIPE\\LANMAN") == 0) {
	    print_ipc(param, paramlen, data, datalen);
	    return;
	}

	if (paramlen)
	    smb_fdata(param, f3, SMBMIN(param + paramlen, maxbuf), unicodestr);
	if (datalen)
	    smb_fdata(data, f4, SMBMIN(data + datalen, maxbuf), unicodestr);
    }
    return;
trunc:
    printf("[|SMB]");
    return;
}


static void
print_negprot(const u_char *words, const u_char *data, const u_char *buf _U_, const u_char *maxbuf)
{
    u_int wct, bcc;
    const char *f1 = NULL, *f2 = NULL;

    TCHECK(words[0]);
    wct = words[0];
    if (request)
	f2 = "*|Dialect=[Y]\n";
    else {
	if (wct == 1)
	    f1 = "Core Protocol\nDialectIndex=[d]";
	else if (wct == 17)
	    f1 = "NT1 Protocol\nDialectIndex=[d]\nSecMode=[B]\nMaxMux=[d]\nNumVcs=[d]\nMaxBuffer=[D]\nRawSize=[D]\nSessionKey=[W]\nCapabilities=[W]\nServerTime=[T3]TimeZone=[d]\nCryptKey=";
	else if (wct == 13)
	    f1 = "Coreplus/Lanman1/Lanman2 Protocol\nDialectIndex=[d]\nSecMode=[w]\nMaxXMit=[d]\nMaxMux=[d]\nMaxVcs=[d]\nBlkMode=[w]\nSessionKey=[W]\nServerTime=[T1]TimeZone=[d]\nRes=[W]\nCryptKey=";
    }

    if (f1)
	smb_fdata(words + 1, f1, SMBMIN(words + 1 + wct * 2, maxbuf),
	    unicodestr);
    else
	print_data(words + 1, SMBMIN(wct * 2, PTR_DIFF(maxbuf, words + 1)));

    TCHECK2(*data, 2);
    bcc = EXTRACT_LE_16BITS(data);
    printf("smb_bcc=%u\n", bcc);
    if (bcc > 0) {
	if (f2)
	    smb_fdata(data + 2, f2, SMBMIN(data + 2 + EXTRACT_LE_16BITS(data),
		maxbuf), unicodestr);
	else
	    print_data(data + 2, SMBMIN(EXTRACT_LE_16BITS(data), PTR_DIFF(maxbuf, data + 2)));
    }
    return;
trunc:
    printf("[|SMB]");
    return;
}

static void
print_sesssetup(const u_char *words, const u_char *data, const u_char *buf _U_, const u_char *maxbuf)
{
    u_int wct, bcc;
    const char *f1 = NULL, *f2 = NULL;

    TCHECK(words[0]);
    wct = words[0];
    if (request) {
	if (wct == 10)
	    f1 = "Com2=[w]\nOff2=[d]\nBufSize=[d]\nMpxMax=[d]\nVcNum=[d]\nSessionKey=[W]\nPassLen=[d]\nCryptLen=[d]\nCryptOff=[d]\nPass&Name=\n";
	else
	    f1 = "Com2=[B]\nRes1=[B]\nOff2=[d]\nMaxBuffer=[d]\nMaxMpx=[d]\nVcNumber=[d]\nSessionKey=[W]\nCaseInsensitivePasswordLength=[d]\nCaseSensitivePasswordLength=[d]\nRes=[W]\nCapabilities=[W]\nPass1&Pass2&Account&Domain&OS&LanMan=\n";
    } else {
	if (wct == 3) {
	    f1 = "Com2=[w]\nOff2=[d]\nAction=[w]\n";
	} else if (wct == 13) {
	    f1 = "Com2=[B]\nRes=[B]\nOff2=[d]\nAction=[w]\n";
	    f2 = "NativeOS=[S]\nNativeLanMan=[S]\nPrimaryDomain=[S]\n";
	}
    }

    if (f1)
	smb_fdata(words + 1, f1, SMBMIN(words + 1 + wct * 2, maxbuf),
	    unicodestr);
    else
	print_data(words + 1, SMBMIN(wct * 2, PTR_DIFF(maxbuf, words + 1)));

    TCHECK2(*data, 2);
    bcc = EXTRACT_LE_16BITS(data);
    printf("smb_bcc=%u\n", bcc);
    if (bcc > 0) {
	if (f2)
	    smb_fdata(data + 2, f2, SMBMIN(data + 2 + EXTRACT_LE_16BITS(data),
		maxbuf), unicodestr);
	else
	    print_data(data + 2, SMBMIN(EXTRACT_LE_16BITS(data), PTR_DIFF(maxbuf, data + 2)));
    }
    return;
trunc:
    printf("[|SMB]");
    return;
}

static void
print_lockingandx(const u_char *words, const u_char *data, const u_char *buf _U_, const u_char *maxbuf)
{
    u_int wct, bcc;
    const u_char *maxwords;
    const char *f1 = NULL, *f2 = NULL;

    TCHECK(words[0]);
    wct = words[0];
    if (request) {
	f1 = "Com2=[w]\nOff2=[d]\nHandle=[d]\nLockType=[w]\nTimeOut=[D]\nUnlockCount=[d]\nLockCount=[d]\n";
	TCHECK(words[7]);
	if (words[7] & 0x10)
	    f2 = "*Process=[d]\n[P2]Offset=[M]\nLength=[M]\n";
	else
	    f2 = "*Process=[d]\nOffset=[D]\nLength=[D]\n";
    } else {
	f1 = "Com2=[w]\nOff2=[d]\n";
    }

    maxwords = SMBMIN(words + 1 + wct * 2, maxbuf);
    if (wct)
	smb_fdata(words + 1, f1, maxwords, unicodestr);