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/*
Unix SMB/CIFS implementation.
Copyright (C) Stefan Metzmacher 2004
Copyright (C) Rafal Szczesniak 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 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"
#include "libnet/libnet.h"
#include "libcli/libcli.h"
/**
* Connects rpc pipe on remote server
*
* @param ctx initialised libnet context
* @param mem_ctx memory context of this call
* @param r data structure containing necessary parameters and return values
* @return nt status of the call
**/
static NTSTATUS libnet_RpcConnectSrv(struct libnet_context *ctx, TALLOC_CTX *mem_ctx, struct libnet_RpcConnect *r)
{
NTSTATUS status;
const char *binding = NULL;
/* prepare binding string */
switch (r->level) {
case LIBNET_RPC_CONNECT_DC:
case LIBNET_RPC_CONNECT_PDC:
case LIBNET_RPC_CONNECT_SERVER:
binding = talloc_asprintf(mem_ctx, "ncacn_np:%s", r->in.name);
break;
case LIBNET_RPC_CONNECT_BINDING:
binding = r->in.binding;
break;
}
/* connect to remote dcerpc pipe */
status = dcerpc_pipe_connect(mem_ctx, &r->out.dcerpc_pipe,
binding, r->in.dcerpc_iface,
ctx->cred, ctx->event_ctx);
if (!NT_STATUS_IS_OK(status)) {
r->out.error_string = talloc_asprintf(mem_ctx,
"dcerpc_pipe_connect to pipe %s[%s] failed with %s\n",
r->in.dcerpc_iface->name, binding, nt_errstr(status));
return status;
}
r->out.error_string = NULL;
ctx->pipe = r->out.dcerpc_pipe;
return status;
}
/**
* Connects rpc pipe on domain pdc
*
* @param ctx initialised libnet context
* @param mem_ctx memory context of this call
* @param r data structure containing necessary parameters and return values
* @return nt status of the call
**/
static NTSTATUS libnet_RpcConnectPdc(struct libnet_context *ctx, TALLOC_CTX *mem_ctx, struct libnet_RpcConnect *r)
{
NTSTATUS status;
struct libnet_RpcConnect r2;
struct libnet_LookupDCs f;
const char *connect_name;
f.in.domain_name = r->in.name;
switch (r->level) {
case LIBNET_RPC_CONNECT_PDC:
f.in.name_type = NBT_NAME_PDC;
break;
case LIBNET_RPC_CONNECT_DC:
f.in.name_type = NBT_NAME_LOGON;
break;
default:
break;
}
f.out.num_dcs = 0;
f.out.dcs = NULL;
/* find the domain pdc first */
status = libnet_LookupDCs(ctx, mem_ctx, &f);
if (!NT_STATUS_IS_OK(status)) {
r->out.error_string = talloc_asprintf(mem_ctx, "libnet_LookupDCs failed: %s",
nt_errstr(status));
return status;
}
/* we might not have got back a name. Fall back to the IP */
if (f.out.dcs[0].name) {
connect_name = f.out.dcs[0].name;
} else {
connect_name = f.out.dcs[0].address;
}
/* ok, pdc has been found so do attempt to rpc connect */
r2.level = LIBNET_RPC_CONNECT_SERVER;
/* This will cause yet another name resolution, but at least
* we pass the right name down the stack now */
r2.in.name = talloc_strdup(mem_ctx, connect_name);
r2.in.dcerpc_iface = r->in.dcerpc_iface;
status = libnet_RpcConnect(ctx, mem_ctx, &r2);
r->out.dcerpc_pipe = r2.out.dcerpc_pipe;
r->out.error_string = r2.out.error_string;
ctx->pipe = r->out.dcerpc_pipe;
return status;
}
/**
* Connects to rpc pipe on remote server or pdc
*
* @param ctx initialised libnet context
* @param mem_ctx memory context of this call
* @param r data structure containing necessary parameters and return values
* @return nt status of the call
**/
NTSTATUS libnet_RpcConnect(struct libnet_context *ctx, TALLOC_CTX *mem_ctx, struct libnet_RpcConnect *r)
{
switch (r->level) {
case LIBNET_RPC_CONNECT_SERVER:
return libnet_RpcConnectSrv(ctx, mem_ctx, r);
case LIBNET_RPC_CONNECT_BINDING:
return libnet_RpcConnectSrv(ctx, mem_ctx, r);
case LIBNET_RPC_CONNECT_PDC:
case LIBNET_RPC_CONNECT_DC:
return libnet_RpcConnectPdc(ctx, mem_ctx, r);
}
return NT_STATUS_INVALID_LEVEL;
}
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