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/*
Unix SMB/Netbios implementation.
Version 1.9.
NT Domain Authentication SMB / MSRPC client
Copyright (C) Andrew Tridgell 1994-1997
Copyright (C) Luke Kenneth Casson Leighton 1996-1997
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.
*/
#ifdef SYSLOG
#undef SYSLOG
#endif
#include "includes.h"
extern int DEBUGLEVEL;
extern pstring username;
extern pstring workgroup;
#define CLIENT_TIMEOUT (30*1000)
#ifdef NTDOMAIN
/****************************************************************************
open an rpc pipe (\NETLOGON or \srvsvc for example)
****************************************************************************/
uint16 open_rpc_pipe(char *inbuf, char *outbuf, char *rname, int Client, int cnum)
{
int fnum;
char *p;
DEBUG(5,("open_rpc_pipe: %s\n", rname));
bzero(outbuf,smb_size);
set_message(outbuf,15,1 + strlen(rname),True);
CVAL(outbuf,smb_com) = SMBopenX;
SSVAL(outbuf,smb_tid, cnum);
cli_setup_pkt(outbuf);
SSVAL(outbuf,smb_vwv0,0xFF);
SSVAL(outbuf,smb_vwv2,1);
SSVAL(outbuf,smb_vwv3,(DENY_NONE<<4));
SSVAL(outbuf,smb_vwv4,aSYSTEM | aHIDDEN);
SSVAL(outbuf,smb_vwv5,aSYSTEM | aHIDDEN);
SSVAL(outbuf,smb_vwv8,1);
p = smb_buf(outbuf);
strcpy(p,rname);
p = skip_string(p,1);
send_smb(Client,outbuf);
receive_smb(Client,inbuf,CLIENT_TIMEOUT);
if (CVAL(inbuf,smb_rcls) != 0)
{
if (CVAL(inbuf,smb_rcls) == ERRSRV &&
SVAL(inbuf,smb_err) == ERRnoresource &&
cli_reopen_connection(inbuf,outbuf))
{
return open_rpc_pipe(inbuf, outbuf, rname, Client, cnum);
}
DEBUG(0,("opening remote pipe %s - error %s\n", rname, smb_errstr(inbuf)));
return 0xffff;
}
fnum = SVAL(inbuf, smb_vwv2);
DEBUG(5,("opening pipe: fnum %d\n", fnum));
return fnum;
}
struct
{
char *client;
char *server;
} pipe_names [] =
{
{ PIPE_LSARPC , PIPE_LSASS },
{ PIPE_NETLOGON, PIPE_NETLOGON },
{ NULL , NULL }
};
/****************************************************************************
do an rpc bind
****************************************************************************/
BOOL bind_rpc_pipe(char *pipe_name, uint16 fnum, uint32 call_id,
RPC_IFACE *abstract, RPC_IFACE *transfer)
{
char *rparam = NULL;
char *rdata = NULL;
char *p;
int rdrcnt,rprcnt;
int data_len;
pstring data; /* only 1024 bytes */
uint16 setup[2]; /* only need 2 uint16 setup parameters */
RPC_HDR hdr;
RPC_HDR_RB hdr_rb;
BOOL valid_ack = False;
if (pipe_name == NULL || abstract == NULL || transfer == NULL) return False;
DEBUG(5,("Bind RPC Pipe[%x]: %s\n", fnum, pipe_name));
/* create the request RPC_HDR_RB */
make_rpc_hdr_rb(&hdr_rb,
0x1630, 0x1630, 0x0,
0x1, 0x1, 0x1,
abstract, transfer);
/* stream the bind request data */
p = smb_io_rpc_hdr_rb(False, &hdr_rb, data + 0x10, data, 4, 0);
data_len = PTR_DIFF(p, data);
/* create the request RPC_HDR */
make_rpc_hdr(&hdr, RPC_BIND, 0x0, call_id, PTR_DIFF(p, data + 0x10));
/* stream the header into data */
p = smb_io_rpc_hdr(False, &hdr, data, data, 4, 0);
/* create setup parameters. */
setup[0] = 0x0026; /* 0x26 indicates "transact named pipe" */
setup[1] = fnum; /* file handle, from the SMBcreateX pipe, earlier */
/* send the data on \PIPE\ */
if (cli_call_api("\\PIPE\\", 0, data_len, 2, 1024,
BUFFER_SIZE,
&rprcnt, &rdrcnt,
NULL, data, setup,
&rparam, &rdata))
{
RPC_HDR_BA hdr_ba;
int hdr_len;
int pkt_len;
int i = 0;
DEBUG(5, ("cli_call_api: return OK\n"));
p = rdata;
if (p) p = smb_io_rpc_hdr(True, &hdr, p, rdata, 4, 0);
if (p) p = align_offset(p, rdata, 4); /* oh, what a surprise */
hdr_len = PTR_DIFF(p, rdata);
if (p) p = smb_io_rpc_hdr_ba(True, &hdr_ba, p, rdata, 4, 0);
pkt_len = PTR_DIFF(p, rdata);
#if 0
if (p && hdr_len != hdr.hdr.frag_len - hdr.alloc_hint)
{
/* header length not same as calculated header length */
DEBUG(2,("bind_rpc_pipe: hdr_len %x != frag_len-alloc_hint %x\n",
hdr_len, hdr.hdr.frag_len - hdr.alloc_hint));
p = NULL;
}
if (p && pkt_len != hdr.hdr.frag_len)
{
/* packet data size not same as reported fragment length */
DEBUG(2,("bind_rpc_pipe: pkt_len %x != frag_len \n",
pkt_len, hdr.hdr.frag_len));
p = NULL;
}
#endif
while (p && (pipe_names[i].server != NULL))
{
DEBUG(6,("bind_rpc_pipe: searching pipe name: client:%s server:%s\n",
pipe_names[i].client, pipe_names[i].server));
if ((strcmp(pipe_name , pipe_names[i].client) == 0))
{
if (strcmp(hdr_ba.addr.str, pipe_names[i].server) == 0)
{
DEBUG(5,("bind_rpc_pipe: server pipe_name found: %s\n",
pipe_names[i].server));
break;
}
else
{
DEBUG(2,("bind_rpc_pipe: pipe_name %s != expected pipe %s\n",
pipe_names[i].server, hdr_ba.addr.str));
p = NULL;
}
}
else
{
i++;
}
}
if (p && pipe_names[i].server == NULL)
{
DEBUG(2,("bind_rpc_pipe: pipe name %s unsupported\n", hdr_ba.addr.str));
p = NULL;
}
if (p)
{
/* check the transfer syntax */
valid_ack = (hdr_ba.transfer.version == transfer->version) &&
(memcmp(hdr_ba.transfer.data, transfer->data,
sizeof(transfer->version)) ==0);
if (!valid_ack)
{
DEBUG(2,("bind_rpc_pipe: transfer syntax differs\n"));
p = NULL;
}
}
if (p)
{
/* check the results */
valid_ack = (hdr_ba.res.num_results == 0x1) &&
(hdr_ba.res.result == 0);
if (!valid_ack)
{
DEBUG(2,("bind_rpc_pipe: bind denied results: %d reason: %x\n",
hdr_ba.res.num_results,
hdr_ba.res.reason));
p = NULL;
}
else
{
DEBUG(5,("bind_rpc_pipe: accepted!\n"));
}
}
}
if (rparam) free(rparam);
if (rdata) free(rdata);
return valid_ack;
}
#endif /* NTDOMAIN */
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