usr/src/cmd/smbsrv/smbd/smbd_logon.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
  23  * Copyright 2017 Nexenta Systems, Inc.  All rights reserved.
  24  */
  25
  26 #include <sys/types.h>
  27 #include <errno.h>
  28 #include <synch.h>
  29 #include <stdio.h>
  30 #include <stdlib.h>
  31 #include <unistd.h>
  32 #include <string.h>
  33 #include <strings.h>
  34 #include <syslog.h>
  35 #include <fcntl.h>
  36 #include <pwd.h>
  37 #include <nss_dbdefs.h>
  38 #include <sys/idmap.h>
  39 #include "smbd.h"
  40
  41 /*
  42  * Invoked at user logon due to SmbSessionSetupX.
  43  *
  44  * On error, returns NULL, and status in user_info->lg_status
  45  */
  46 smb_token_t *
  47 smbd_user_auth_logon(smb_logon_t *user_info)
  48 {
  49         smb_token_t *token = NULL;
  50         smb_logon_t tmp_user;
  51         char *p;
  52         char *buf = NULL;
  53
  54         if (user_info->lg_username == NULL ||
  55             user_info->lg_domain == NULL ||
  56             user_info->lg_workstation == NULL) {
  57                 user_info->lg_status = NT_STATUS_INVALID_PARAMETER;
  58                 return (NULL);
  59         }
  60
  61         /*
  62          * Avoid modifying the caller-provided struct because it
  63          * may or may not point to allocated strings etc.
  64          * Copy to tmp_user, auth, then copy the (out) lg_status
  65          * member back to the caller-provided struct.
  66          */
  67         tmp_user = *user_info;
  68         if (tmp_user.lg_username[0] == '\0') {
  69                 tmp_user.lg_flags |= SMB_ATF_ANON;
  70                 tmp_user.lg_e_username = "anonymous";
  71         } else {
  72                 tmp_user.lg_e_username = tmp_user.lg_username;
  73         }
  74
  75         /* Handle user@domain format. */
  76         if (tmp_user.lg_domain[0] == '\0' &&
  77             (p = strchr(tmp_user.lg_e_username, '@')) != NULL) {
  78                 buf = strdup(tmp_user.lg_e_username);
  79                 if (buf == NULL)
  80                         goto errout;
  81                 p = buf + (p - tmp_user.lg_e_username);
  82                 *p = '\0';
  83                 tmp_user.lg_e_domain = p + 1;
  84                 tmp_user.lg_e_username = buf;
  85         } else {
  86                 tmp_user.lg_e_domain = tmp_user.lg_domain;
  87         }
  88
  89         token = smb_logon(&tmp_user);
  90         user_info->lg_status = tmp_user.lg_status;
  91
  92         return (token);
  93
  94 errout:
  95         free(buf);
  96         smb_token_destroy(token);
  97         return NULL;
  98 }