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/* 
   Samba Unix/Linux SMB client library 
   Version 3.0
   Distributed SMB/CIFS Server Management Utility 
   Copyright (C) 2001 Andrew Bartlett (abartlet@samba.org)

   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 "../utils/net.h"


typedef NTSTATUS (*rpc_command_fn)(const DOM_SID *, struct cli_state *, TALLOC_CTX *, int, const char **);


static DOM_SID *net_get_remote_domain_sid(struct cli_state *cli)
{
	DOM_SID *domain_sid;
	POLICY_HND pol;
	NTSTATUS result = NT_STATUS_OK;
	uint32 info_class = 5;
	fstring domain_name;
	TALLOC_CTX *mem_ctx;
	
	if (!(domain_sid = malloc(sizeof(DOM_SID)))){
		DEBUG(0,("fetch_domain_sid: malloc returned NULL!\n"));
		goto error;
	}
	    
	if (!(mem_ctx=talloc_init()))
	{
		DEBUG(0,("fetch_domain_sid: talloc_init returned NULL!\n"));
		goto error;
	}


	if (!cli_nt_session_open (cli, PIPE_LSARPC)) {
		fprintf(stderr, "could not initialise lsa pipe\n");
		goto error;
	}
	
	result = cli_lsa_open_policy(cli, mem_ctx, True, 
				     SEC_RIGHTS_MAXIMUM_ALLOWED,
				     &pol);
	if (!NT_STATUS_IS_OK(result)) {
		goto error;
	}

	result = cli_lsa_query_info_policy(cli, mem_ctx, &pol, info_class, 
					   domain_name, domain_sid);
	if (!NT_STATUS_IS_OK(result)) {
		goto error;
	}

	cli_lsa_close(cli, mem_ctx, &pol);
	cli_nt_session_close(cli);
	talloc_destroy(mem_ctx);

	return domain_sid;

 error:
	fprintf(stderr, "could not obtain sid for domain %s\n", cli->domain);

	if (!NT_STATUS_IS_OK(result)) {
		fprintf(stderr, "error: %s\n", get_nt_error_msg(result));
	}

	exit(1);
}


static int run_rpc_command(const char *pipe_name, 
			   rpc_command_fn fn,
			   int argc, const char **argv) 
{
	struct cli_state *cli = net_make_ipc_connection(0);
	TALLOC_CTX *mem_ctx;
	NTSTATUS nt_status;
	DOM_SID *domain_sid = net_get_remote_domain_sid(cli);
	/* Create mem_ctx */
	
	if (!(mem_ctx = talloc_init())) {
		DEBUG(0, ("talloc_init() failed\n"));
		cli_shutdown(cli);
		return -1;
	}
	
	if (!cli_nt_session_open(cli, pipe_name)) {
		DEBUG(0, ("Could not initialise samr pipe\n"));
	}
	
	nt_status = fn(domain_sid, cli, mem_ctx, argc, argv);
	
	if (cli->nt_pipe_fnum)
		cli_nt_session_close(cli);
	
	talloc_destroy(mem_ctx);

	return (!NT_STATUS_IS_OK(nt_status));
}

static NTSTATUS rpc_user_add_internals(const DOM_SID *domain_sid, struct cli_state *cli, TALLOC_CTX *mem_ctx, 
				       int argc, const char **argv) {
	
	POLICY_HND connect_pol, domain_pol, user_pol;
	NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
	const char *acct_name;
	uint16 acb_info;
	uint32 unknown, user_rid;

	if (argc != 1) {
		d_printf("Usage: net rpc user add username\n");
		return NT_STATUS_OK;
	}

	acct_name = argv[0];

	/* Get sam policy handle */
	
	result = cli_samr_connect(cli, mem_ctx, MAXIMUM_ALLOWED_ACCESS, 
				  &connect_pol);
	if (!NT_STATUS_IS_OK(result)) {
		goto done;
	}
	
	/* Get domain policy handle */
	
	result = cli_samr_open_domain(cli, mem_ctx, &connect_pol,
				      MAXIMUM_ALLOWED_ACCESS,
				      domain_sid, &domain_pol);
	if (!NT_STATUS_IS_OK(result)) {
		goto done;
	}

	/* Create domain user */

	acb_info = ACB_NORMAL;
	unknown = 0xe005000b; /* No idea what this is - a permission mask? */

	result = cli_samr_create_dom_user(cli, mem_ctx, &domain_pol,
					  acct_name, acb_info, unknown,
					  &user_pol, &user_rid);
	if (!NT_STATUS_IS_OK(result)) {
		goto done;
	}

 done:
	return result;
}

static int rpc_user_add(int argc, const char **argv) 
{
	return run_rpc_command(PIPE_SAMR, rpc_user_add_internals,
			       argc, argv);
}

static int rpc_user_usage(int argc, const char **argv) 
{
	d_printf("  net rpc user add \t to add a user\n");
	return -1;
}

static int rpc_user(int argc, const char **argv) 
{
	struct functable func[] = {
		{"add", rpc_user_add},
		{NULL, NULL}
	};
	
	if (argc == 0) {
		rpc_user_usage(argc, argv);
	}

	return net_run_function(argc, argv, func, rpc_user_usage);
}

int net_rpc_usage(int argc, const char **argv) 
{
	d_printf("  net rpc join \tto join a domin \n");
	return -1;
}

int net_rpc(int argc, const char **argv)
{
	struct functable func[] = {
		{"join", net_rpc_join},
		{"user", rpc_user},
		{NULL, NULL}
	};
	return net_run_function(argc, argv, func, net_rpc_usage);
}