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/*
Unix SMB/CIFS implementation.
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.
*/
/*
a composite function for domain handling
*/
#include "includes.h"
#include "libcli/composite/composite.h"
#include "librpc/gen_ndr/ndr_samr.h"
#include "libnet/composite.h"
static void domain_open_handler(struct rpc_request*);
enum domain_open_stage { DOMOPEN_CONNECT, DOMOPEN_LOOKUP, DOMOPEN_OPEN };
struct domain_open_state {
enum domain_open_stage stage;
struct dcerpc_pipe *pipe;
struct rpc_request *req;
struct samr_Connect connect;
struct samr_LookupDomain lookup;
struct samr_OpenDomain open;
struct lsa_String domain_name;
uint32_t access_mask;
struct policy_handle connect_handle;
struct policy_handle domain_handle;
};
/**
* Stage 1: Connect to SAM server.
*/
static NTSTATUS domain_open_connect(struct composite_context *c,
struct domain_open_state *s)
{
struct samr_LookupDomain *r = &s->lookup;
/* receive samr_Connect reply */
c->status = dcerpc_ndr_request_recv(s->req);
NT_STATUS_NOT_OK_RETURN(c->status);
/* prepare for samr_LookupDomain call */
r->in.connect_handle = &s->connect_handle;
r->in.domain_name = &s->domain_name;
s->req = dcerpc_samr_LookupDomain_send(s->pipe, c, r);
if (s->req == NULL) goto failure;
s->req->async.callback = domain_open_handler;
s->req->async.private = c;
s->stage = DOMOPEN_LOOKUP;
return NT_STATUS_OK;
failure:
return NT_STATUS_UNSUCCESSFUL;
}
/**
* Stage 2: Lookup domain by name.
*/
static NTSTATUS domain_open_lookup(struct composite_context *c,
struct domain_open_state *s)
{
struct samr_OpenDomain *r = &s->open;
/* receive samr_LookupDomain reply */
c->status = dcerpc_ndr_request_recv(s->req);
NT_STATUS_NOT_OK_RETURN(c->status);
/* prepare for samr_OpenDomain call */
r->in.connect_handle = &s->connect_handle;
r->in.access_mask = SEC_FLAG_MAXIMUM_ALLOWED;
r->in.sid = s->lookup.out.sid;
r->out.domain_handle = &s->domain_handle;
s->req = dcerpc_samr_OpenDomain_send(s->pipe, c, r);
if (s->req == NULL) goto failure;
s->req->async.callback = domain_open_handler;
s->req->async.private = c;
s->stage = DOMOPEN_OPEN;
return NT_STATUS_OK;
failure:
return NT_STATUS_UNSUCCESSFUL;
}
/*
* Stage 3: Open domain.
*/
static NTSTATUS domain_open_open(struct composite_context *c,
struct domain_open_state *s)
{
/* receive samr_OpenDomain reply */
c->status = dcerpc_ndr_request_recv(s->req);
NT_STATUS_NOT_OK_RETURN(c->status);
c->state = COMPOSITE_STATE_DONE;
return NT_STATUS_OK;
}
/**
* Event handler for asynchronous request. Handles transition through
* intermediate stages of the call.
*
* @param req rpc call context
*/
static void domain_open_handler(struct rpc_request *req)
{
struct composite_context *c = req->async.private;
struct domain_open_state *s = talloc_get_type(c->private_data, struct domain_open_state);
/* Stages of the call */
switch (s->stage) {
case DOMOPEN_CONNECT:
c->status = domain_open_connect(c, s);
break;
case DOMOPEN_LOOKUP:
c->status = domain_open_lookup(c, s);
break;
case DOMOPEN_OPEN:
c->status = domain_open_open(c, s);
break;
}
if (!NT_STATUS_IS_OK(c->status)) {
c->state = COMPOSITE_STATE_ERROR;
}
}
/**
* Sends asynchronous domain_open request
*
* @param p dce/rpc call pipe
* @param io arguments and results of the call
*/
struct composite_context *libnet_rpc_domain_open_send(struct dcerpc_pipe *p,
struct libnet_rpc_domain_open *io,
void (*monitor)(struct monitor_msg*))
{
struct composite_context *c;
struct domain_open_state *s;
c = talloc_zero(p, struct composite_context);
if (c == NULL) goto failure;
s = talloc_zero(c, struct domain_open_state);
if (s == NULL) goto failure;
c->state = COMPOSITE_STATE_IN_PROGRESS;
c->private_data= s;
c->event_ctx = dcerpc_event_context(p);
s->pipe = p;
s->access_mask = io->in.access_mask;
s->domain_name.string = io->in.domain_name;
/* preparing parameters to send rpc request */
s->connect.in.system_name = 0;
s->connect.in.access_mask = s->access_mask;
s->connect.out.connect_handle = &s->connect_handle;
/* send request */
s->req = dcerpc_samr_Connect_send(p, c, &s->connect);
/* callback handler */
s->req->async.callback = domain_open_handler;
s->req->async.private = c;
s->stage = DOMOPEN_CONNECT;
return c;
failure:
talloc_free(c);
return NULL;
}
/**
* Waits for and receives result of asynchronous domain_open call
*
* @param c composite context returned by asynchronous domain_open call
* @param mem_ctx memory context of the call
* @param io pointer to results (and arguments) of the call
* @return nt status code of execution
*/
NTSTATUS libnet_rpc_domain_open_recv(struct composite_context *c, TALLOC_CTX *mem_ctx,
struct libnet_rpc_domain_open *io)
{
NTSTATUS status;
struct domain_open_state *s;
/* wait for results of sending request */
status = composite_wait(c);
if (NT_STATUS_IS_OK(status) && io) {
s = talloc_get_type(c->private_data, struct domain_open_state);
io->out.domain_handle = s->domain_handle;
}
talloc_free(c);
return status;
}
/**
* Synchronous version of domain_open call
*
* @param pipe dce/rpc call pipe
* @param mem_ctx memory context for the call
* @param io arguments and results of the call
* @return nt status code of execution
*/
NTSTATUS libnet_rpc_domain_open(struct dcerpc_pipe *p,
TALLOC_CTX *mem_ctx,
struct libnet_rpc_domain_open *io)
{
struct composite_context *c = libnet_rpc_domain_open_send(p, io, NULL);
return libnet_rpc_domain_open_recv(c, mem_ctx, io);
}
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