source/pam_smbpass/pam_smb_acct.c

   1 /* Unix NT password database implementation, version 0.7.5.
   2  *
   3  * This program is free software; you can redistribute it and/or modify it under
   4  * the terms of the GNU General Public License as published by the Free
   5  * Software Foundation; either version 2 of the License, or (at your option)
   6  * any later version.
   7  *
   8  * This program is distributed in the hope that it will be useful, but WITHOUT
   9  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  10  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  11  * more details.
  12  *
  13  * You should have received a copy of the GNU General Public License along with
  14  * this program; if not, write to the Free Software Foundation, Inc., 675
  15  * Mass Ave, Cambridge, MA 02139, USA.
  16 */
  17
  18 /* indicate the following groups are defined */
  19 #define PAM_SM_ACCT
  20
  21 #include "includes.h"
  22
  23 #ifndef LINUX
  24
  25 /* This is only used in the Sun implementation. */
  26 #include <security/pam_appl.h>
  27
  28 #endif  /* LINUX */
  29
  30 #include <security/pam_modules.h>
  31
  32 #include "general.h"
  33
  34 #include "support.h"
  35
  36 /*
  37  * pam_sm_acct_mgmt() verifies whether or not the account is disabled.
  38  *
  39  */
  40
  41 int pam_sm_acct_mgmt( pam_handle_t *pamh, int flags,
  42                       int argc, const char **argv )
  43 {
  44     unsigned int ctrl;
  45     int retval;
  46
  47     const char *name;
  48     SAM_ACCOUNT *sampass = NULL;
  49
  50     extern BOOL in_client;
  51
  52     /* Samba initialization. */
  53     setup_logging( "pam_smbpass", False );
  54     charset_initialise();
  55     codepage_initialise(lp_client_code_page());
  56     in_client = True;
  57
  58     ctrl = set_ctrl( flags, argc, argv );
  59
  60     /* get the username */
  61
  62     retval = pam_get_user( pamh, &name, "Username: " );
  63     if (retval != PAM_SUCCESS) {
  64         if (on( SMB_DEBUG, ctrl )) {
  65             _log_err( LOG_DEBUG, "acct: could not identify user" );
  66         }
  67         return retval;
  68     }
  69     if (on( SMB_DEBUG, ctrl )) {
  70         _log_err( LOG_DEBUG, "acct: username [%s] obtained", name );
  71     }
  72
  73     if (!initialize_password_db(True)) {
  74         _log_err( LOG_ALERT, "Cannot access samba password database" );
  75         return PAM_AUTHINFO_UNAVAIL;
  76     }
  77
  78     /* Get the user's record. */
  79     pdb_init_sam(&sampass);
  80     pdb_getsampwnam(sampass, name );
  81
  82     if (!sampass)
  83         return PAM_USER_UNKNOWN;
  84
  85     if (pdb_get_acct_ctrl(sampass) & ACB_DISABLED) {
  86         if (on( SMB_DEBUG, ctrl )) {
  87             _log_err( LOG_DEBUG
  88                       , "acct: account %s is administratively disabled", name );
  89         }
  90         make_remark( pamh, ctrl, PAM_ERROR_MSG
  91                      , "Your account has been disabled; "
  92                        "please see your system administrator." );
  93
  94         return PAM_ACCT_EXPIRED;
  95     }
  96
  97     /* TODO: support for expired passwords. */
  98
  99     return PAM_SUCCESS;
 100 }
 101
 102 /* static module data */
 103 #ifdef PAM_STATIC
 104 struct pam_module _pam_smbpass_acct_modstruct = {
 105      "pam_smbpass",
 106      NULL,
 107      NULL,
 108      pam_sm_acct_mgmt,
 109      NULL,
 110      NULL,
 111      NULL
 112 };
 113 #endif
 114