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/* 38 * pam_sm_acct_mgmt() verifies whether or not the account is disabled. 39 * 40 */ 41 42int pam_sm_acct_mgmt( pam_handle_t *pamh, int flags, 43 int argc, const char **argv ) 44{ 45 unsigned int ctrl; 46 int retval; 47 48 const char *name; 49 struct samu *sampass = NULL; 50 void (*oldsig_handler)(int); 51 extern BOOL in_client; 52 53 /* Samba initialization. */ 54 load_case_tables(); 55 setup_logging( "pam_smbpass", False ); 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 /* Getting into places that might use LDAP -- protect the app 74 from a SIGPIPE it's not expecting */ 75 oldsig_handler = CatchSignal(SIGPIPE, SIGNAL_CAST SIG_IGN); 76 if (!initialize_password_db(True)) { 77 _log_err( LOG_ALERT, "Cannot access samba password database" ); 78 CatchSignal(SIGPIPE, SIGNAL_CAST oldsig_handler); 79 return PAM_AUTHINFO_UNAVAIL; 80 } 81 82 /* Get the user's record. */ 83 84 if (!(sampass = samu_new( NULL ))) { 85 CatchSignal(SIGPIPE, SIGNAL_CAST oldsig_handler); 86 /* malloc fail. */ 87 return nt_status_to_pam(NT_STATUS_NO_MEMORY); 88 } 89 90 if (!pdb_getsampwnam(sampass, name )) { 91 _log_err( LOG_DEBUG, "acct: could not identify user" ); 92 CatchSignal(SIGPIPE, SIGNAL_CAST oldsig_handler); 93 return PAM_USER_UNKNOWN; 94 } 95 96 /* check for lookup failure */ 97 if (!strlen(pdb_get_username(sampass)) ) { 98 CatchSignal(SIGPIPE, SIGNAL_CAST oldsig_handler); 99 return PAM_USER_UNKNOWN; 100 } 101 102 if (pdb_get_acct_ctrl(sampass) & ACB_DISABLED) { 103 if (on( SMB_DEBUG, ctrl )) { 104 _log_err( LOG_DEBUG 105 , "acct: account %s is administratively disabled", name ); 106 } 107 make_remark( pamh, ctrl, PAM_ERROR_MSG 108 , "Your account has been disabled; " 109 "please see your system administrator." ); 110 111 CatchSignal(SIGPIPE, SIGNAL_CAST oldsig_handler); 112 return PAM_ACCT_EXPIRED; 113 } 114 115 /* TODO: support for expired passwords. */ 116 117 CatchSignal(SIGPIPE, SIGNAL_CAST oldsig_handler); 118 return PAM_SUCCESS; 119} 120 121/* static module data */ 122#ifdef PAM_STATIC 123struct pam_module _pam_smbpass_acct_modstruct = { 124 "pam_smbpass", 125 NULL, 126 NULL, 127 pam_sm_acct_mgmt, 128 NULL, 129 NULL, 130 NULL 131}; 132#endif 133 134