libmlsvc/common/mlsvc_util.c

	mlsvc_util.c revision eb1d736b1c19f6abeee90c921a9320b67fedd016
/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

/*
 * Utility functions to support the RPC interface library.
 */

#include <stdio.h>
#include <stdarg.h>
#include <strings.h>
#include <unistd.h>
#include <netdb.h>
#include <stdlib.h>
#include <sys/time.h>
#include <sys/systm.h>
#include <syslog.h>

#include <smbsrv/libsmb.h>
#include <smbsrv/libsmbrdr.h>
#include <smbsrv/libsmbns.h>
#include <smbsrv/libmlsvc.h>
#include <smbsrv/smbinfo.h>
#include <lsalib.h>
#include <samlib.h>
#include <smbsrv/netrauth.h>

/* Domain join support (using MS-RPC) */
static boolean_t mlsvc_ntjoin_support = B_FALSE;

extern int netr_open(char *, char *, mlsvc_handle_t *);
extern int netr_close(mlsvc_handle_t *);
extern DWORD netlogon_auth(char *, mlsvc_handle_t *, DWORD);
extern int mlsvc_user_getauth(char *, char *, smb_auth_info_t *);

/*
 * mlsvc_lookup_name
 *
 * This is just a wrapper for lsa_lookup_name.
 *
 * The memory for the sid is allocated using malloc so the caller should
 * call free when it is no longer required.
 */
uint32_t
mlsvc_lookup_name(char *name, smb_sid_t **sid, uint16_t *sid_type)
{
    smb_account_t account;
    uint32_t status;

    status = lsa_lookup_name(name, *sid_type, &account);
    if (status == NT_STATUS_SUCCESS) {
        *sid = account.a_sid;
        account.a_sid = NULL;
        *sid_type = account.a_type;
        smb_account_free(&account);
    }

    return (status);
}

/*
 * mlsvc_lookup_sid
 *
 * This is just a wrapper for lsa_lookup_sid.
 *
 * The allocated memory for the returned name must be freed by caller upon
 * successful return.
 */
uint32_t
mlsvc_lookup_sid(smb_sid_t *sid, char **name)
{
    smb_account_t ainfo;
    uint32_t status;
    int namelen;

    if ((status = lsa_lookup_sid(sid, &ainfo)) == NT_STATUS_SUCCESS) {
        namelen = strlen(ainfo.a_domain) + strlen(ainfo.a_name) + 2;
        if ((*name = malloc(namelen)) != NULL)
            (void) snprintf(*name, namelen, "%s\\%s",
                ainfo.a_domain, ainfo.a_name);
        else
            status = NT_STATUS_NO_MEMORY;

        smb_account_free(&ainfo);
    }

    return (status);
}

DWORD
mlsvc_netlogon(char *server, char *domain)
{
    mlsvc_handle_t netr_handle;
    DWORD status;

    if (netr_open(server, domain, &netr_handle) == 0) {
        if ((status = netlogon_auth(server, &netr_handle,
            NETR_FLG_INIT)) != NT_STATUS_SUCCESS)
            syslog(LOG_NOTICE, "Failed to establish NETLOGON "
                "credential chain");
        (void) netr_close(&netr_handle);
    } else {
        status = NT_STATUS_OPEN_FAILED;
    }

    return (status);
}

/*
 * Joins the specified domain by creating a machine account on
 * the selected domain controller.
 *
 * Disconnect any existing connection with the domain controller.
 * This will ensure that no stale connection will be used, it will
 * also pickup any configuration changes in either side by trying
 * to establish a new connection.
 *
 * Returns NT status codes.
 */
DWORD
mlsvc_join(smb_domain_t *dinfo, char *user, char *plain_text)
{
    smb_auth_info_t auth;
    int erc;
    DWORD status;
    char machine_passwd[NETR_MACHINE_ACCT_PASSWD_MAX];
    smb_adjoin_status_t err;

    machine_passwd[0] = '\0';

    (void) utf8_strupr(dinfo->d_nbdomain);

    mlsvc_disconnect(dinfo->d_dc);

    erc = mlsvc_logon(dinfo->d_dc, dinfo->d_nbdomain, user);

    if (erc == AUTH_USER_GRANT) {
        if (mlsvc_ntjoin_support == B_FALSE) {

            if ((err = smb_ads_join(dinfo->d_fqdomain, user,
                plain_text, machine_passwd,
                sizeof (machine_passwd))) == SMB_ADJOIN_SUCCESS) {
                status = NT_STATUS_SUCCESS;
            } else {
                smb_ads_join_errmsg(err);
                status = NT_STATUS_UNSUCCESSFUL;
            }
        } else {
            if (mlsvc_user_getauth(dinfo->d_dc, user, &auth)
                != 0) {
                status = NT_STATUS_INVALID_PARAMETER;
                return (status);
            }

            status = sam_create_trust_account(dinfo->d_dc,
                dinfo->d_nbdomain, &auth);
            if (status == NT_STATUS_SUCCESS) {
                (void) smb_getnetbiosname(machine_passwd,
                    sizeof (machine_passwd));
                (void) utf8_strlwr(machine_passwd);
            }
        }

        if (status == NT_STATUS_SUCCESS) {
            erc = smb_setdomainprops(NULL, dinfo->d_dc,
                machine_passwd);
            if (erc != 0) {
                syslog(LOG_NOTICE, "Failed to update CIFS "
                    "configuration");
                return (NT_STATUS_UNSUCCESSFUL);
            }

            status = mlsvc_netlogon(dinfo->d_dc, dinfo->d_nbdomain);
        }
    } else {
        status = NT_STATUS_LOGON_FAILURE;
    }

    return (status);
}