parse_rpc.c

来自「samba-3.0.22.tar.gz 编译smb服务器的源码」· C语言 代码 · 共 862 行 · 第 1/2 页

/* 
 *  Unix SMB/CIFS implementation.
 *  RPC Pipe client / server routines
 *  Copyright (C) Andrew Tridgell              1992-1997,
 *  Copyright (C) Luke Kenneth Casson Leighton 1996-1997,
 *  Copyright (C) Paul Ashton                       1997.
 *  Copyright (C) Jeremy Allison                    1999.
 *  
 *  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., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include "includes.h"

#undef DBGC_CLASS
#define DBGC_CLASS DBGC_RPC_PARSE

/*******************************************************************
interface/version dce/rpc pipe identification
********************************************************************/

#define TRANS_SYNT_V2                       \
{                                           \
	{                                   \
		0x8a885d04, 0x1ceb, 0x11c9, \
		{ 0x9f, 0xe8 },             \
		{ 0x08, 0x00,               \
       		  0x2b, 0x10, 0x48, 0x60 }  \
	}, 0x02                             \
}

#define SYNT_NETLOGON_V2                    \
{                                           \
	{                                   \
		0x8a885d04, 0x1ceb, 0x11c9, \
		{ 0x9f, 0xe8 },             \
		{ 0x08, 0x00,               \
		  0x2b, 0x10, 0x48, 0x60 }  \
	}, 0x02                             \
}

#define SYNT_WKSSVC_V1                      \
{                                           \
	{                                   \
		0x6bffd098, 0xa112, 0x3610, \
		{ 0x98, 0x33 },             \
		{ 0x46, 0xc3,               \
		  0xf8, 0x7e, 0x34, 0x5a }  \
	}, 0x01                             \
}

#define SYNT_SRVSVC_V3                      \
{                                           \
	{                                   \
		0x4b324fc8, 0x1670, 0x01d3, \
		{ 0x12, 0x78 },             \
		{ 0x5a, 0x47,               \
		  0xbf, 0x6e, 0xe1, 0x88 }  \
	}, 0x03                             \
}

#define SYNT_LSARPC_V0                      \
{                                           \
	{                                   \
		0x12345778, 0x1234, 0xabcd, \
		{ 0xef, 0x00 },             \
		{ 0x01, 0x23,               \
		  0x45, 0x67, 0x89, 0xab }  \
	}, 0x00                             \
}

#define SYNT_LSARPC_V0_DS                \
{                                           \
	{                                   \
		0x3919286a, 0xb10c, 0x11d0, \
		{ 0x9b, 0xa8 },             \
		{ 0x00, 0xc0,               \
		  0x4f, 0xd9, 0x2e, 0xf5 }  \
	}, 0x00                             \
}

#define SYNT_SAMR_V1                        \
{                                           \
	{                                   \
		0x12345778, 0x1234, 0xabcd, \
		{ 0xef, 0x00 },             \
		{ 0x01, 0x23,               \
		  0x45, 0x67, 0x89, 0xac }  \
	}, 0x01                             \
}

#define SYNT_NETLOGON_V1                    \
{                                           \
	{                                   \
		0x12345678, 0x1234, 0xabcd, \
		{ 0xef, 0x00 },             \
		{ 0x01, 0x23,               \
		  0x45, 0x67, 0xcf, 0xfb }  \
	}, 0x01                             \
}

#define SYNT_WINREG_V1                      \
{                                           \
	{                                   \
		0x338cd001, 0x2244, 0x31f1, \
		{ 0xaa, 0xaa },             \
		{ 0x90, 0x00,               \
		  0x38, 0x00, 0x10, 0x03 }  \
	}, 0x01                             \
}

#define SYNT_SPOOLSS_V1                     \
{                                           \
	{                                   \
		0x12345678, 0x1234, 0xabcd, \
		{ 0xef, 0x00 },             \
		{ 0x01, 0x23,               \
		  0x45, 0x67, 0x89, 0xab }  \
	}, 0x01                             \
}

#define SYNT_NONE_V0                        \
{                                           \
	{                                   \
		0x0, 0x0, 0x0,              \
		{ 0x00, 0x00 },             \
		{ 0x00, 0x00,               \
		  0x00, 0x00, 0x00, 0x00 }  \
	}, 0x00                             \
}

#define SYNT_NETDFS_V3                      \
{                                           \
        {                                   \
                0x4fc742e0, 0x4a10, 0x11cf, \
                { 0x82, 0x73 },             \
		{ 0x00, 0xaa,               \
                  0x00, 0x4a, 0xe6, 0x73 }  \
        }, 0x03                             \
}

#define SYNT_ECHO_V1                        \
{                                           \
        {                                   \
                0x60a15ec5, 0x4de8, 0x11d7, \
                { 0xa6, 0x37 },             \
		{ 0x00, 0x50,               \
                  0x56, 0xa2, 0x01, 0x82 }  \
        }, 0x01                             \
}

#define SYNT_SHUTDOWN_V1                    \
{                                           \
        {                                   \
                0x894de0c0, 0x0d55, 0x11d3, \
                { 0xa3, 0x22 },             \
		{ 0x00, 0xc0,               \
                  0x4f, 0xa3, 0x21, 0xa1 }  \
        }, 0x01                             \
}

#define SYNT_SVCCTL_V2                      \
{                                           \
	{                                   \
		0x367abb81, 0x9844, 0x35f1, \
                { 0xad, 0x32 },             \
                { 0x98, 0xf0,               \
                  0x38, 0x00, 0x10, 0x03 }  \
	}, 0x02                             \
}


#define SYNT_EVENTLOG_V0		    \
{					    \
	{				    \
		0x82273fdc, 0xe32a, 0x18c3, \
		{ 0x3f, 0x78 },		    \
		{ 0x82, 0x79,		    \
		  0x29, 0xdc, 0x23, 0xea }  \
	}, 0x00				    \
}

#define SYNT_UNIXINFO_V0                    \
{                                           \
	{                                   \
		0x9c54e310, 0xa955, 0x4885, \
		{ 0xbd, 0x31 },		    \
                { 0x78, 0x78,               \
                  0x71, 0x47, 0xdf, 0xa6 }  \
	}, 0x00                             \
}

#define SYNT_NTSVCS_V1                      \
{                                           \
	{                                   \
		0x8d9f4e40, 0xa03d, 0x11ce, \
		{ 0x8f, 0x69},		    \
                { 0x08, 0x00,               \
                  0x3e, 0x30, 0x05, 0x1b }  \
	}, 0x01                             \
}

/*
 * IMPORTANT!!  If you update this structure, make sure to
 * update the index #defines in smb.h.
 */

const struct pipe_id_info pipe_names [] =
{
	/* client pipe , abstract syntax       , server pipe   , transfer syntax */
	{ PIPE_LSARPC  , SYNT_LSARPC_V0        , PIPE_LSASS    , TRANS_SYNT_V2 },
	{ PIPE_LSARPC  , SYNT_LSARPC_V0_DS     , PIPE_LSASS    , TRANS_SYNT_V2 },
	{ PIPE_SAMR    , SYNT_SAMR_V1          , PIPE_LSASS    , TRANS_SYNT_V2 },
	{ PIPE_NETLOGON, SYNT_NETLOGON_V1      , PIPE_LSASS    , TRANS_SYNT_V2 },
	{ PIPE_SRVSVC  , SYNT_SRVSVC_V3        , PIPE_NTSVCS   , TRANS_SYNT_V2 },
	{ PIPE_WKSSVC  , SYNT_WKSSVC_V1        , PIPE_NTSVCS   , TRANS_SYNT_V2 },
	{ PIPE_WINREG  , SYNT_WINREG_V1        , PIPE_WINREG   , TRANS_SYNT_V2 },
	{ PIPE_SPOOLSS , SYNT_SPOOLSS_V1       , PIPE_SPOOLSS  , TRANS_SYNT_V2 },
	{ PIPE_NETDFS  , SYNT_NETDFS_V3        , PIPE_NETDFS   , TRANS_SYNT_V2 },
	{ PIPE_ECHO    , SYNT_ECHO_V1          , PIPE_ECHO     , TRANS_SYNT_V2 },
	{ PIPE_SHUTDOWN, SYNT_SHUTDOWN_V1      , PIPE_SHUTDOWN , TRANS_SYNT_V2 },
	{ PIPE_SVCCTL  , SYNT_SVCCTL_V2        , PIPE_NTSVCS   , TRANS_SYNT_V2 },
	{ PIPE_EVENTLOG, SYNT_EVENTLOG_V0      , PIPE_EVENTLOG , TRANS_SYNT_V2 },
	{ PIPE_NTSVCS  , SYNT_NTSVCS_V1        , PIPE_NTSVCS   , TRANS_SYNT_V2 },
	{ NULL         , SYNT_NONE_V0          , NULL          , SYNT_NONE_V0  }
};

/****************************************************************************
 Return the pipe name from the index.
 ****************************************************************************/

const char *cli_get_pipe_name(int pipe_idx)
{
	return &pipe_names[pipe_idx].client_pipe[5];
}

/*******************************************************************
 Inits an RPC_HDR structure.
********************************************************************/

void init_rpc_hdr(RPC_HDR *hdr, enum RPC_PKT_TYPE pkt_type, uint8 flags,
				uint32 call_id, int data_len, int auth_len)
{
	hdr->major        = 5;               /* RPC version 5 */
	hdr->minor        = 0;               /* minor version 0 */
	hdr->pkt_type     = pkt_type;        /* RPC packet type */
	hdr->flags        = flags;           /* dce/rpc flags */
	hdr->pack_type[0] = 0x10;            /* little-endian data representation */
	hdr->pack_type[1] = 0;               /* packed data representation */
	hdr->pack_type[2] = 0;               /* packed data representation */
	hdr->pack_type[3] = 0;               /* packed data representation */
	hdr->frag_len     = data_len;        /* fragment length, fill in later */
	hdr->auth_len     = auth_len;        /* authentication length */
	hdr->call_id      = call_id;         /* call identifier - match incoming RPC */
}

/*******************************************************************
 Reads or writes an RPC_HDR structure.
********************************************************************/

BOOL smb_io_rpc_hdr(const char *desc,  RPC_HDR *rpc, prs_struct *ps, int depth)
{
	if (rpc == NULL)
		return False;

	prs_debug(ps, depth, desc, "smb_io_rpc_hdr");
	depth++;

	if(!prs_uint8 ("major     ", ps, depth, &rpc->major))
		return False;

	if(!prs_uint8 ("minor     ", ps, depth, &rpc->minor))
		return False;
	if(!prs_uint8 ("pkt_type  ", ps, depth, &rpc->pkt_type))
		return False;
	if(!prs_uint8 ("flags     ", ps, depth, &rpc->flags))
		return False;

	/* We always marshall in little endian format. */
	if (MARSHALLING(ps))
		rpc->pack_type[0] = 0x10;

	if(!prs_uint8("pack_type0", ps, depth, &rpc->pack_type[0]))
		return False;
	if(!prs_uint8("pack_type1", ps, depth, &rpc->pack_type[1]))
		return False;
	if(!prs_uint8("pack_type2", ps, depth, &rpc->pack_type[2]))
		return False;
	if(!prs_uint8("pack_type3", ps, depth, &rpc->pack_type[3]))
		return False;

	/*
	 * If reading and pack_type[0] == 0 then the data is in big-endian
	 * format. Set the flag in the prs_struct to specify reverse-endainness.
	 */

	if (UNMARSHALLING(ps) && rpc->pack_type[0] == 0) {
		DEBUG(10,("smb_io_rpc_hdr: PDU data format is big-endian. Setting flag.\n"));
		prs_set_endian_data(ps, RPC_BIG_ENDIAN);
	}

	if(!prs_uint16("frag_len  ", ps, depth, &rpc->frag_len))
		return False;
	if(!prs_uint16("auth_len  ", ps, depth, &rpc->auth_len))
		return False;
	if(!prs_uint32("call_id   ", ps, depth, &rpc->call_id))
		return False;
	return True;
}

/*******************************************************************
 Reads or writes an RPC_IFACE structure.
********************************************************************/

static BOOL smb_io_rpc_iface(const char *desc, RPC_IFACE *ifc, prs_struct *ps, int depth)
{
	if (ifc == NULL)
		return False;

	prs_debug(ps, depth, desc, "smb_io_rpc_iface");
	depth++;

	if (!prs_align(ps))
		return False;

	if (!smb_io_uuid(  "uuid", &ifc->uuid, ps, depth))
		return False;

	if(!prs_uint32 ("version", ps, depth, &ifc->version))
		return False;

	return True;
}

/*******************************************************************
 Inits an RPC_ADDR_STR structure.
********************************************************************/

static void init_rpc_addr_str(RPC_ADDR_STR *str, const char *name)
{
	str->len = strlen(name) + 1;
	fstrcpy(str->str, name);
}

/*******************************************************************
 Reads or writes an RPC_ADDR_STR structure.
********************************************************************/

static BOOL smb_io_rpc_addr_str(const char *desc,  RPC_ADDR_STR *str, prs_struct *ps, int depth)
{
	if (str == NULL)
		return False;

	prs_debug(ps, depth, desc, "smb_io_rpc_addr_str");
	depth++;
	if(!prs_align(ps))
		return False;

	if(!prs_uint16 (      "len", ps, depth, &str->len))
		return False;
	if(!prs_uint8s (True, "str", ps, depth, (uchar*)str->str, MIN(str->len, sizeof(str->str)) ))
		return False;
	return True;
}

/*******************************************************************
 Inits an RPC_HDR_BBA structure.
********************************************************************/

static void init_rpc_hdr_bba(RPC_HDR_BBA *bba, uint16 max_tsize, uint16 max_rsize, uint32 assoc_gid)
{
	bba->max_tsize = max_tsize; /* maximum transmission fragment size (0x1630) */
	bba->max_rsize = max_rsize; /* max receive fragment size (0x1630) */   
	bba->assoc_gid = assoc_gid; /* associated group id (0x0) */ 
}

/*******************************************************************
 Reads or writes an RPC_HDR_BBA structure.
********************************************************************/

static BOOL smb_io_rpc_hdr_bba(const char *desc,  RPC_HDR_BBA *rpc, prs_struct *ps, int depth)
{
	if (rpc == NULL)
		return False;

	prs_debug(ps, depth, desc, "smb_io_rpc_hdr_bba");
	depth++;

	if(!prs_uint16("max_tsize", ps, depth, &rpc->max_tsize))
		return False;
	if(!prs_uint16("max_rsize", ps, depth, &rpc->max_rsize))
		return False;
	if(!prs_uint32("assoc_gid", ps, depth, &rpc->assoc_gid))
		return False;
	return True;
}

/*******************************************************************
 Inits an RPC_CONTEXT structure.
 Note the transfer pointer must remain valid until this is marshalled.
********************************************************************/

void init_rpc_context(RPC_CONTEXT *rpc_ctx, uint16 context_id, RPC_IFACE *abstract, RPC_IFACE *transfer)
{
	rpc_ctx->context_id   = context_id   ; /* presentation context identifier (0x0) */
	rpc_ctx->num_transfer_syntaxes = 1 ; /* the number of syntaxes (has always been 1?)(0x1) */

	/* num and vers. of interface client is using */
	rpc_ctx->abstract = *abstract;

	/* vers. of interface to use for replies */
	rpc_ctx->transfer = transfer;
}

/*******************************************************************
 Inits an RPC_HDR_RB structure.
 Note the context pointer must remain valid until this is marshalled.
********************************************************************/

void init_rpc_hdr_rb(RPC_HDR_RB *rpc,