receive.c

samba最新软件

/* 
   Unix SMB/CIFS implementation.
   process incoming packets - main loop
   Copyright (C) Andrew Tridgell 1992-2005
   Copyright (C) James J Myers 2003 <[e-mail]>
   Copyright (C) Stefan Metzmacher 2004-2005
   
   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 3 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, see <http://www.gnu.org/licenses/>.
*/

#include "includes.h"
#include "system/time.h"
#include "smbd/service_stream.h"
#include "smb_server/smb_server.h"
#include "smb_server/service_smb_proto.h"
#include "ntvfs/ntvfs.h"
#include "system/filesys.h"
#include "param/param.h"


/*
  send an oplock break request to a client
*/
NTSTATUS smbsrv_send_oplock_break(void *p, struct ntvfs_handle *ntvfs, uint8_t level)
{
	struct smbsrv_tcon *tcon = talloc_get_type(p, struct smbsrv_tcon);
	struct smbsrv_request *req;

	req = smbsrv_init_request(tcon->smb_conn);
	NT_STATUS_HAVE_NO_MEMORY(req);

	smbsrv_setup_reply(req, 8, 0);

	SCVAL(req->out.hdr,HDR_COM,SMBlockingX);
	SSVAL(req->out.hdr,HDR_TID,tcon->tid);
	SSVAL(req->out.hdr,HDR_PID,0xFFFF);
	SSVAL(req->out.hdr,HDR_UID,0);
	SSVAL(req->out.hdr,HDR_MID,0xFFFF);
	SCVAL(req->out.hdr,HDR_FLG,0);
	SSVAL(req->out.hdr,HDR_FLG2,0);

	SSVAL(req->out.vwv, VWV(0), SMB_CHAIN_NONE);
	SSVAL(req->out.vwv, VWV(1), 0);
	smbsrv_push_fnum(req->out.vwv, VWV(2), ntvfs);
	SCVAL(req->out.vwv, VWV(3), LOCKING_ANDX_OPLOCK_RELEASE);
	SCVAL(req->out.vwv, VWV(3)+1, level);
	SIVAL(req->out.vwv, VWV(4), 0);
	SSVAL(req->out.vwv, VWV(6), 0);
	SSVAL(req->out.vwv, VWV(7), 0);

	smbsrv_send_reply(req);
	return NT_STATUS_OK;
}

static void switch_message(int type, struct smbsrv_request *req);

/*
  These flags determine some of the permissions required to do an operation 
*/
#define NEED_SESS		(1<<0)
#define NEED_TCON		(1<<1)
#define SIGNING_NO_REPLY	(1<<2)
/* does VWV(0) of the request hold chaining information */
#define AND_X			(1<<3)
/* The 64Kb question: are requests > 64K valid? */
#define LARGE_REQUEST	(1<<4)

/* 
   define a list of possible SMB messages and their corresponding
   functions. Any message that has a NULL function is unimplemented -
   please feel free to contribute implementations!
*/
static const struct smb_message_struct
{
	const char *name;
	void (*fn)(struct smbsrv_request *);
#define message_flags(type) smb_messages[(type) & 0xff].flags
	int flags;
}
 smb_messages[256] = {
/* 0x00 */ { "SMBmkdir",	smbsrv_reply_mkdir,		NEED_SESS|NEED_TCON },
/* 0x01 */ { "SMBrmdir",	smbsrv_reply_rmdir,		NEED_SESS|NEED_TCON },
/* 0x02 */ { "SMBopen",		smbsrv_reply_open,		NEED_SESS|NEED_TCON },
/* 0x03 */ { "SMBcreate",	smbsrv_reply_mknew,		NEED_SESS|NEED_TCON },
/* 0x04 */ { "SMBclose",	smbsrv_reply_close,		NEED_SESS|NEED_TCON },
/* 0x05 */ { "SMBflush",	smbsrv_reply_flush,		NEED_SESS|NEED_TCON },
/* 0x06 */ { "SMBunlink",	smbsrv_reply_unlink,		NEED_SESS|NEED_TCON },
/* 0x07 */ { "SMBmv",		smbsrv_reply_mv,		NEED_SESS|NEED_TCON },
/* 0x08 */ { "SMBgetatr",	smbsrv_reply_getatr,		NEED_SESS|NEED_TCON },
/* 0x09 */ { "SMBsetatr",	smbsrv_reply_setatr,		NEED_SESS|NEED_TCON },
/* 0x0a */ { "SMBread",		smbsrv_reply_read,		NEED_SESS|NEED_TCON },
/* 0x0b */ { "SMBwrite",	smbsrv_reply_write,		NEED_SESS|NEED_TCON },
/* 0x0c */ { "SMBlock",		smbsrv_reply_lock,		NEED_SESS|NEED_TCON },
/* 0x0d */ { "SMBunlock",	smbsrv_reply_unlock,		NEED_SESS|NEED_TCON },
/* 0x0e */ { "SMBctemp",	smbsrv_reply_ctemp,		NEED_SESS|NEED_TCON },
/* 0x0f */ { "SMBmknew",	smbsrv_reply_mknew,		NEED_SESS|NEED_TCON }, 
/* 0x10 */ { "SMBchkpth",	smbsrv_reply_chkpth,		NEED_SESS|NEED_TCON },
/* 0x11 */ { "SMBexit",		smbsrv_reply_exit,		NEED_SESS },
/* 0x12 */ { "SMBlseek",	smbsrv_reply_lseek,		NEED_SESS|NEED_TCON },
/* 0x13 */ { "SMBlockread",	smbsrv_reply_lockread,		NEED_SESS|NEED_TCON },
/* 0x14 */ { "SMBwriteunlock",	smbsrv_reply_writeunlock,	NEED_SESS|NEED_TCON },
/* 0x15 */ { NULL, NULL, 0 },
/* 0x16 */ { NULL, NULL, 0 },
/* 0x17 */ { NULL, NULL, 0 },
/* 0x18 */ { NULL, NULL, 0 },
/* 0x19 */ { NULL, NULL, 0 },
/* 0x1a */ { "SMBreadbraw",	smbsrv_reply_readbraw,		NEED_SESS|NEED_TCON },
/* 0x1b */ { "SMBreadBmpx",	smbsrv_reply_readbmpx,		NEED_SESS|NEED_TCON },
/* 0x1c */ { "SMBreadBs",	NULL,				0 },
/* 0x1d */ { "SMBwritebraw",	smbsrv_reply_writebraw,		NEED_SESS|NEED_TCON },
/* 0x1e */ { "SMBwriteBmpx",	smbsrv_reply_writebmpx,		NEED_SESS|NEED_TCON },
/* 0x1f */ { "SMBwriteBs",	smbsrv_reply_writebs,		NEED_SESS|NEED_TCON },
/* 0x20 */ { "SMBwritec",	NULL,				0 },
/* 0x21 */ { NULL, NULL, 0 },
/* 0x22 */ { "SMBsetattrE",	smbsrv_reply_setattrE,		NEED_SESS|NEED_TCON },
/* 0x23 */ { "SMBgetattrE",	smbsrv_reply_getattrE,		NEED_SESS|NEED_TCON },
/* 0x24 */ { "SMBlockingX",	smbsrv_reply_lockingX,		NEED_SESS|NEED_TCON|AND_X },
/* 0x25 */ { "SMBtrans",	smbsrv_reply_trans,		NEED_SESS|NEED_TCON },
/* 0x26 */ { "SMBtranss",	smbsrv_reply_transs,		NEED_SESS|NEED_TCON },
/* 0x27 */ { "SMBioctl",	smbsrv_reply_ioctl,		NEED_SESS|NEED_TCON },
/* 0x28 */ { "SMBioctls",	NULL,				NEED_SESS|NEED_TCON },
/* 0x29 */ { "SMBcopy",		smbsrv_reply_copy,		NEED_SESS|NEED_TCON },
/* 0x2a */ { "SMBmove",		NULL,				NEED_SESS|NEED_TCON },
/* 0x2b */ { "SMBecho",		smbsrv_reply_echo,		0 },
/* 0x2c */ { "SMBwriteclose",	smbsrv_reply_writeclose,	NEED_SESS|NEED_TCON },
/* 0x2d */ { "SMBopenX",	smbsrv_reply_open_and_X,	NEED_SESS|NEED_TCON|AND_X },
/* 0x2e */ { "SMBreadX",	smbsrv_reply_read_and_X,	NEED_SESS|NEED_TCON|AND_X },
/* 0x2f */ { "SMBwriteX",	smbsrv_reply_write_and_X,	NEED_SESS|NEED_TCON|AND_X|LARGE_REQUEST},
/* 0x30 */ { NULL, NULL, 0 },
/* 0x31 */ { NULL, NULL, 0 },
/* 0x32 */ { "SMBtrans2",	smbsrv_reply_trans2,		NEED_SESS|NEED_TCON },
/* 0x33 */ { "SMBtranss2",	smbsrv_reply_transs2,		NEED_SESS|NEED_TCON },
/* 0x34 */ { "SMBfindclose",	smbsrv_reply_findclose,		NEED_SESS|NEED_TCON },
/* 0x35 */ { "SMBfindnclose",	smbsrv_reply_findnclose,	NEED_SESS|NEED_TCON },
/* 0x36 */ { NULL, NULL, 0 },
/* 0x37 */ { NULL, NULL, 0 },
/* 0x38 */ { NULL, NULL, 0 },
/* 0x39 */ { NULL, NULL, 0 },
/* 0x3a */ { NULL, NULL, 0 },
/* 0x3b */ { NULL, NULL, 0 },
/* 0x3c */ { NULL, NULL, 0 },
/* 0x3d */ { NULL, NULL, 0 },
/* 0x3e */ { NULL, NULL, 0 },
/* 0x3f */ { NULL, NULL, 0 },
/* 0x40 */ { NULL, NULL, 0 },
/* 0x41 */ { NULL, NULL, 0 },
/* 0x42 */ { NULL, NULL, 0 },
/* 0x43 */ { NULL, NULL, 0 },
/* 0x44 */ { NULL, NULL, 0 },
/* 0x45 */ { NULL, NULL, 0 },
/* 0x46 */ { NULL, NULL, 0 },
/* 0x47 */ { NULL, NULL, 0 },
/* 0x48 */ { NULL, NULL, 0 },
/* 0x49 */ { NULL, NULL, 0 },
/* 0x4a */ { NULL, NULL, 0 },
/* 0x4b */ { NULL, NULL, 0 },
/* 0x4c */ { NULL, NULL, 0 },
/* 0x4d */ { NULL, NULL, 0 },
/* 0x4e */ { NULL, NULL, 0 },
/* 0x4f */ { NULL, NULL, 0 },
/* 0x50 */ { NULL, NULL, 0 },
/* 0x51 */ { NULL, NULL, 0 },
/* 0x52 */ { NULL, NULL, 0 },
/* 0x53 */ { NULL, NULL, 0 },
/* 0x54 */ { NULL, NULL, 0 },
/* 0x55 */ { NULL, NULL, 0 },
/* 0x56 */ { NULL, NULL, 0 },
/* 0x57 */ { NULL, NULL, 0 },
/* 0x58 */ { NULL, NULL, 0 },
/* 0x59 */ { NULL, NULL, 0 },
/* 0x5a */ { NULL, NULL, 0 },
/* 0x5b */ { NULL, NULL, 0 },
/* 0x5c */ { NULL, NULL, 0 },
/* 0x5d */ { NULL, NULL, 0 },
/* 0x5e */ { NULL, NULL, 0 },
/* 0x5f */ { NULL, NULL, 0 },
/* 0x60 */ { NULL, NULL, 0 },
/* 0x61 */ { NULL, NULL, 0 },
/* 0x62 */ { NULL, NULL, 0 },
/* 0x63 */ { NULL, NULL, 0 },
/* 0x64 */ { NULL, NULL, 0 },
/* 0x65 */ { NULL, NULL, 0 },
/* 0x66 */ { NULL, NULL, 0 },
/* 0x67 */ { NULL, NULL, 0 },
/* 0x68 */ { NULL, NULL, 0 },
/* 0x69 */ { NULL, NULL, 0 },
/* 0x6a */ { NULL, NULL, 0 },
/* 0x6b */ { NULL, NULL, 0 },
/* 0x6c */ { NULL, NULL, 0 },
/* 0x6d */ { NULL, NULL, 0 },
/* 0x6e */ { NULL, NULL, 0 },
/* 0x6f */ { NULL, NULL, 0 },
/* 0x70 */ { "SMBtcon",		smbsrv_reply_tcon,		NEED_SESS },
/* 0x71 */ { "SMBtdis",		smbsrv_reply_tdis,		NEED_TCON },
/* 0x72 */ { "SMBnegprot",	smbsrv_reply_negprot,		0 },
/* 0x73 */ { "SMBsesssetupX",	smbsrv_reply_sesssetup,		AND_X },
/* 0x74 */ { "SMBulogoffX",	smbsrv_reply_ulogoffX,		NEED_SESS|AND_X }, /* ulogoff doesn't give a valid TID */
/* 0x75 */ { "SMBtconX",	smbsrv_reply_tcon_and_X,	NEED_SESS|AND_X },
/* 0x76 */ { NULL, NULL, 0 },
/* 0x77 */ { NULL, NULL, 0 },
/* 0x78 */ { NULL, NULL, 0 },
/* 0x79 */ { NULL, NULL, 0 },
/* 0x7a */ { NULL, NULL, 0 },
/* 0x7b */ { NULL, NULL, 0 },
/* 0x7c */ { NULL, NULL, 0 },
/* 0x7d */ { NULL, NULL, 0 },
/* 0x7e */ { NULL, NULL, 0 },
/* 0x7f */ { NULL, NULL, 0 },
/* 0x80 */ { "SMBdskattr",	smbsrv_reply_dskattr,		NEED_SESS|NEED_TCON },
/* 0x81 */ { "SMBsearch",	smbsrv_reply_search,		NEED_SESS|NEED_TCON },
/* 0x82 */ { "SMBffirst",	smbsrv_reply_search,		NEED_SESS|NEED_TCON },
/* 0x83 */ { "SMBfunique",	smbsrv_reply_search,		NEED_SESS|NEED_TCON },
/* 0x84 */ { "SMBfclose",	smbsrv_reply_fclose,		NEED_SESS|NEED_TCON },
/* 0x85 */ { NULL, NULL, 0 },
/* 0x86 */ { NULL, NULL, 0 },
/* 0x87 */ { NULL, NULL, 0 },
/* 0x88 */ { NULL, NULL, 0 },
/* 0x89 */ { NULL, NULL, 0 },
/* 0x8a */ { NULL, NULL, 0 },
/* 0x8b */ { NULL, NULL, 0 },
/* 0x8c */ { NULL, NULL, 0 },
/* 0x8d */ { NULL, NULL, 0 },
/* 0x8e */ { NULL, NULL, 0 },
/* 0x8f */ { NULL, NULL, 0 },
/* 0x90 */ { NULL, NULL, 0 },
/* 0x91 */ { NULL, NULL, 0 },
/* 0x92 */ { NULL, NULL, 0 },
/* 0x93 */ { NULL, NULL, 0 },
/* 0x94 */ { NULL, NULL, 0 },
/* 0x95 */ { NULL, NULL, 0 },
/* 0x96 */ { NULL, NULL, 0 },
/* 0x97 */ { NULL, NULL, 0 },
/* 0x98 */ { NULL, NULL, 0 },
/* 0x99 */ { NULL, NULL, 0 },
/* 0x9a */ { NULL, NULL, 0 },
/* 0x9b */ { NULL, NULL, 0 },
/* 0x9c */ { NULL, NULL, 0 },
/* 0x9d */ { NULL, NULL, 0 },
/* 0x9e */ { NULL, NULL, 0 },
/* 0x9f */ { NULL, NULL, 0 },
/* 0xa0 */ { "SMBnttrans",	smbsrv_reply_nttrans,		NEED_SESS|NEED_TCON|LARGE_REQUEST },
/* 0xa1 */ { "SMBnttranss",	smbsrv_reply_nttranss,		NEED_SESS|NEED_TCON },
/* 0xa2 */ { "SMBntcreateX",	smbsrv_reply_ntcreate_and_X,	NEED_SESS|NEED_TCON|AND_X },
/* 0xa3 */ { NULL, NULL, 0 },
/* 0xa4 */ { "SMBntcancel",	smbsrv_reply_ntcancel,		NEED_SESS|NEED_TCON|SIGNING_NO_REPLY },
/* 0xa5 */ { "SMBntrename",	smbsrv_reply_ntrename,		NEED_SESS|NEED_TCON },
/* 0xa6 */ { NULL, NULL, 0 },
/* 0xa7 */ { NULL, NULL, 0 },
/* 0xa8 */ { NULL, NULL, 0 },
/* 0xa9 */ { NULL, NULL, 0 },
/* 0xaa */ { NULL, NULL, 0 },
/* 0xab */ { NULL, NULL, 0 },
/* 0xac */ { NULL, NULL, 0 },
/* 0xad */ { NULL, NULL, 0 },
/* 0xae */ { NULL, NULL, 0 },
/* 0xaf */ { NULL, NULL, 0 },
/* 0xb0 */ { NULL, NULL, 0 },
/* 0xb1 */ { NULL, NULL, 0 },
/* 0xb2 */ { NULL, NULL, 0 },
/* 0xb3 */ { NULL, NULL, 0 },
/* 0xb4 */ { NULL, NULL, 0 },
/* 0xb5 */ { NULL, NULL, 0 },
/* 0xb6 */ { NULL, NULL, 0 },
/* 0xb7 */ { NULL, NULL, 0 },
/* 0xb8 */ { NULL, NULL, 0 },
/* 0xb9 */ { NULL, NULL, 0 },
/* 0xba */ { NULL, NULL, 0 },
/* 0xbb */ { NULL, NULL, 0 },
/* 0xbc */ { NULL, NULL, 0 },
/* 0xbd */ { NULL, NULL, 0 },
/* 0xbe */ { NULL, NULL, 0 },
/* 0xbf */ { NULL, NULL, 0 },
/* 0xc0 */ { "SMBsplopen",	smbsrv_reply_printopen,		NEED_SESS|NEED_TCON },
/* 0xc1 */ { "SMBsplwr",	smbsrv_reply_printwrite,	NEED_SESS|NEED_TCON },
/* 0xc2 */ { "SMBsplclose",	smbsrv_reply_printclose,	NEED_SESS|NEED_TCON },
/* 0xc3 */ { "SMBsplretq",	smbsrv_reply_printqueue,	NEED_SESS|NEED_TCON },
/* 0xc4 */ { NULL, NULL, 0 },
/* 0xc5 */ { NULL, NULL, 0 },
/* 0xc6 */ { NULL, NULL, 0 },
/* 0xc7 */ { NULL, NULL, 0 },
/* 0xc8 */ { NULL, NULL, 0 },
/* 0xc9 */ { NULL, NULL, 0 },
/* 0xca */ { NULL, NULL, 0 },
/* 0xcb */ { NULL, NULL, 0 },
/* 0xcc */ { NULL, NULL, 0 },
/* 0xcd */ { NULL, NULL, 0 },
/* 0xce */ { NULL, NULL, 0 },
/* 0xcf */ { NULL, NULL, 0 },
/* 0xd0 */ { "SMBsends",	NULL,				0 },
/* 0xd1 */ { "SMBsendb",	NULL,				0 },
/* 0xd2 */ { "SMBfwdname",	NULL,				0 },
/* 0xd3 */ { "SMBcancelf",	NULL,				0 },
/* 0xd4 */ { "SMBgetmac",	NULL,				0 },
/* 0xd5 */ { "SMBsendstrt",	NULL,				0 },
/* 0xd6 */ { "SMBsendend",	NULL,				0 },
/* 0xd7 */ { "SMBsendtxt",	NULL,				0 },
/* 0xd8 */ { NULL, NULL, 0 },
/* 0xd9 */ { NULL, NULL, 0 },
/* 0xda */ { NULL, NULL, 0 },
/* 0xdb */ { NULL, NULL, 0 },
/* 0xdc */ { NULL, NULL, 0 },
/* 0xdd */ { NULL, NULL, 0 },
/* 0xde */ { NULL, NULL, 0 },
/* 0xdf */ { NULL, NULL, 0 },
/* 0xe0 */ { NULL, NULL, 0 },
/* 0xe1 */ { NULL, NULL, 0 },
/* 0xe2 */ { NULL, NULL, 0 },
/* 0xe3 */ { NULL, NULL, 0 },
/* 0xe4 */ { NULL, NULL, 0 },
/* 0xe5 */ { NULL, NULL, 0 },
/* 0xe6 */ { NULL, NULL, 0 },
/* 0xe7 */ { NULL, NULL, 0 },
/* 0xe8 */ { NULL, NULL, 0 },
/* 0xe9 */ { NULL, NULL, 0 },
/* 0xea */ { NULL, NULL, 0 },
/* 0xeb */ { NULL, NULL, 0 },
/* 0xec */ { NULL, NULL, 0 },
/* 0xed */ { NULL, NULL, 0 },
/* 0xee */ { NULL, NULL, 0 },
/* 0xef */ { NULL, NULL, 0 },
/* 0xf0 */ { NULL, NULL, 0 },
/* 0xf1 */ { NULL, NULL, 0 },
/* 0xf2 */ { NULL, NULL, 0 },
/* 0xf3 */ { NULL, NULL, 0 },
/* 0xf4 */ { NULL, NULL, 0 },
/* 0xf5 */ { NULL, NULL, 0 },
/* 0xf6 */ { NULL, NULL, 0 },
/* 0xf7 */ { NULL, NULL, 0 },
/* 0xf8 */ { NULL, NULL, 0 },
/* 0xf9 */ { NULL, NULL, 0 },
/* 0xfa */ { NULL, NULL, 0 },
/* 0xfb */ { NULL, NULL, 0 },
/* 0xfc */ { NULL, NULL, 0 },
/* 0xfd */ { NULL, NULL, 0 },