source4/lib/samba3/tdbsam.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    tdb passdb backend format routines
   4
   5         Copyright (C) Simo Sorce        2000-2003
   6     Copyright (C) Jelmer Vernooij       2005
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 */
  21
  22 #include "includes.h"
  23 #include "system/filesys.h"
  24 #include "lib/tdb/include/tdb.h"
  25 #include "lib/util/util_tdb.h"
  26 #include "lib/samba3/samba3.h"
  27
  28 #define TDB_FORMAT_STRING_V0       "ddddddBBBBBBBBBBBBddBBwdwdBwwd"
  29 #define TDB_FORMAT_STRING_V1       "dddddddBBBBBBBBBBBBddBBwdwdBwwd"
  30 #define TDB_FORMAT_STRING_V2       "dddddddBBBBBBBBBBBBddBBBwwdBwwd"
  31 #define TDBSAM_VERSION_STRING      "INFO/version"
  32
  33 static BOOL init_sam_from_buffer_v0(TDB_CONTEXT *tdb, struct samba3_samaccount *sampass, TDB_DATA buf)
  34 {
  35         uint32_t        username_len, domain_len, nt_username_len,
  36                 dir_drive_len, unknown_str_len, munged_dial_len,
  37                 fullname_len, homedir_len, logon_script_len,
  38                 profile_path_len, acct_desc_len, workstations_len;
  39
  40         uint32_t        remove_me;
  41         uint32_t                len = 0;
  42         uint32_t                lm_pw_len, nt_pw_len, hourslen;
  43
  44         if(sampass == NULL || buf.dptr == NULL) {
  45                 DEBUG(0, ("init_sam_from_buffer_v0: NULL parameters found!\n"));
  46                 return False;
  47         }
  48
  49         /* unpack the buffer into variables */
  50         len = tdb_unpack (tdb, (char *)buf.dptr, buf.dsize, TDB_FORMAT_STRING_V0,
  51                 &sampass->logon_time,                                   /* d */
  52                 &sampass->logoff_time,                                  /* d */
  53                 &sampass->kickoff_time,                                 /* d */
  54                 &sampass->pass_last_set_time,                           /* d */
  55                 &sampass->pass_can_change_time,                         /* d */
  56                 &sampass->pass_must_change_time,                        /* d */
  57                 &username_len, &sampass->username,                      /* B */
  58                 &domain_len, &sampass->domain,                          /* B */
  59                 &nt_username_len, &sampass->nt_username,                /* B */
  60                 &fullname_len, &sampass->fullname,                      /* B */
  61                 &homedir_len, &sampass->homedir,                        /* B */
  62                 &dir_drive_len, &sampass->dir_drive,                    /* B */
  63                 &logon_script_len, &sampass->logon_script,              /* B */
  64                 &profile_path_len, &sampass->profile_path,              /* B */
  65                 &acct_desc_len, &sampass->acct_desc,                    /* B */
  66                 &workstations_len, &sampass->workstations,              /* B */
  67                 &unknown_str_len, &sampass->unknown_str,                /* B */
  68                 &munged_dial_len, &sampass->munged_dial,                /* B */
  69                 &sampass->user_rid,                                     /* d */
  70                 &sampass->group_rid,                                    /* d */
  71                 &lm_pw_len, sampass->lm_pw.hash,                        /* B */
  72                 &nt_pw_len, sampass->nt_pw.hash,                        /* B */
  73                 &sampass->acct_ctrl,                                    /* w */
  74                 &remove_me, /* remove on the next TDB_FORMAT upgarde */ /* d */
  75                 &sampass->logon_divs,                                   /* w */
  76                 &sampass->hours_len,                                    /* d */
  77                 &hourslen, &sampass->hours,                             /* B */
  78                 &sampass->bad_password_count,                           /* w */
  79                 &sampass->logon_count,                                  /* w */
  80                 &sampass->unknown_6);                                   /* d */
  81
  82         if (len == (uint32_t) -1)  {
  83                 return False;
  84         }
  85
  86         return True;
  87 }
  88
  89 static BOOL init_sam_from_buffer_v1(TDB_CONTEXT *tdb, struct samba3_samaccount *sampass, TDB_DATA buf)
  90 {
  91         uint32_t        username_len, domain_len, nt_username_len,
  92                 dir_drive_len, unknown_str_len, munged_dial_len,
  93                 fullname_len, homedir_len, logon_script_len,
  94                 profile_path_len, acct_desc_len, workstations_len;
  95
  96         uint32_t        remove_me;
  97         uint32_t                len = 0;
  98         uint32_t                lm_pw_len, nt_pw_len, hourslen;
  99
 100         if(sampass == NULL || buf.dptr == NULL) {
 101                 DEBUG(0, ("init_sam_from_buffer_v1: NULL parameters found!\n"));
 102                 return False;
 103         }
 104
 105         /* unpack the buffer into variables */
 106         len = tdb_unpack (tdb, (char *)buf.dptr, buf.dsize, TDB_FORMAT_STRING_V1,
 107                 &sampass->logon_time,                                   /* d */
 108                 &sampass->logoff_time,                                  /* d */
 109                 &sampass->kickoff_time,                         /* d */
 110                 /* Change from V0 is addition of bad_password_time field. */
 111                 &sampass->bad_password_time,                            /* d */
 112                 &sampass->pass_last_set_time,                           /* d */
 113                 &sampass->pass_can_change_time,                 /* d */
 114                 &sampass->pass_must_change_time,                        /* d */
 115                 &username_len, &sampass->username,                      /* B */
 116                 &domain_len, &sampass->domain,          /* B */
 117                 &nt_username_len, &sampass->nt_username,        /* B */
 118                 &fullname_len, &sampass->fullname,                      /* B */
 119                 &homedir_len, &sampass->homedir,                        /* B */
 120                 &dir_drive_len, &sampass->dir_drive,                    /* B */
 121                 &logon_script_len, &sampass->logon_script,              /* B */
 122                 &profile_path_len, &sampass->profile_path,              /* B */
 123                 &acct_desc_len, &sampass->acct_desc,                    /* B */
 124                 &workstations_len, &sampass->workstations,              /* B */
 125                 &unknown_str_len, &sampass->unknown_str,                /* B */
 126                 &munged_dial_len, &sampass->munged_dial,                /* B */
 127                 &sampass->user_rid,                                     /* d */
 128                 &sampass->group_rid,                                    /* d */
 129                 &lm_pw_len, sampass->lm_pw.hash,                        /* B */
 130                 &nt_pw_len, sampass->nt_pw.hash,                        /* B */
 131                 &sampass->acct_ctrl,                                    /* w */
 132                 &remove_me,                                             /* d */
 133                 &sampass->logon_divs,                                   /* w */
 134                 &sampass->hours_len,                                    /* d */
 135                 &hourslen, &sampass->hours,                             /* B */
 136                 &sampass->bad_password_count,                           /* w */
 137                 &sampass->logon_count,                                  /* w */
 138                 &sampass->unknown_6);                                   /* d */
 139
 140         if (len == (uint32_t) -1)  {
 141                 return False;
 142         }
 143
 144         return True;
 145 }
 146
 147 static BOOL init_sam_from_buffer_v2(TDB_CONTEXT *tdb, struct samba3_samaccount *sampass, TDB_DATA buf)
 148 {
 149         uint32_t        username_len, domain_len, nt_username_len,
 150                 dir_drive_len, unknown_str_len, munged_dial_len,
 151                 fullname_len, homedir_len, logon_script_len,
 152                 profile_path_len, acct_desc_len, workstations_len;
 153
 154         uint32_t                len = 0;
 155         uint32_t                lm_pw_len, nt_pw_len, nt_pw_hist_len, hourslen;
 156
 157         if(sampass == NULL || buf.dptr == NULL) {
 158                 DEBUG(0, ("init_sam_from_buffer_v2: NULL parameters found!\n"));
 159                 return False;
 160         }
 161
 162         /* unpack the buffer into variables */
 163         len = tdb_unpack (tdb, (char *)buf.dptr, buf.dsize, TDB_FORMAT_STRING_V2,
 164                 &sampass->logon_time,                                   /* d */
 165                 &sampass->logoff_time,                                  /* d */
 166                 &sampass->kickoff_time,                                 /* d */
 167                 &sampass->bad_password_time,                            /* d */
 168                 &sampass->pass_last_set_time,                           /* d */
 169                 &sampass->pass_can_change_time,                         /* d */
 170                 &sampass->pass_must_change_time,                        /* d */
 171                 &username_len, &sampass->username,                      /* B */
 172                 &domain_len, &sampass->domain,                          /* B */
 173                 &nt_username_len, &sampass->nt_username,                /* B */
 174                 &fullname_len, &sampass->fullname,                      /* B */
 175                 &homedir_len, &sampass->homedir,                        /* B */
 176                 &dir_drive_len, &sampass->dir_drive,                    /* B */
 177                 &logon_script_len, &sampass->logon_script,              /* B */
 178                 &profile_path_len, &sampass->profile_path,              /* B */
 179                 &acct_desc_len, &sampass->acct_desc,                    /* B */
 180                 &workstations_len, &sampass->workstations,              /* B */
 181                 &unknown_str_len, &sampass->unknown_str,                /* B */
 182                 &munged_dial_len, &sampass->munged_dial,                /* B */
 183                 &sampass->user_rid,                                     /* d */
 184                 &sampass->group_rid,                                    /* d */
 185                 &lm_pw_len, sampass->lm_pw.hash,                        /* B */
 186                 &nt_pw_len, sampass->nt_pw.hash,                        /* B */
 187                 /* Change from V1 is addition of password history field. */
 188                 &nt_pw_hist_len, &sampass->nt_pw_hist_ptr,              /* B */
 189                 &sampass->acct_ctrl,                                    /* w */
 190                 /* Also "remove_me" field was removed. */
 191                 &sampass->logon_divs,                                   /* w */
 192                 &sampass->hours_len,                                    /* d */
 193                 &hourslen, &sampass->hours,                             /* B */
 194                 &sampass->bad_password_count,                           /* w */
 195                 &sampass->logon_count,                                  /* w */
 196                 &sampass->unknown_6);                                   /* d */
 197
 198         if (len == (uint32_t) -1)  {
 199                 return False;
 200         }
 201
 202         return True;
 203 }
 204
 205 NTSTATUS samba3_read_tdbsam(const char *filename, TALLOC_CTX *ctx, struct samba3_samaccount **accounts, uint32_t *count)
 206 {
 207         int32_t version;
 208         TDB_CONTEXT *tdb;
 209         TDB_DATA key, val;
 210
 211         /* Try to open tdb passwd */
 212         if (!(tdb = tdb_open(filename, 0, TDB_DEFAULT, O_RDONLY, 0600))) {
 213                 DEBUG(0, ("Unable to open TDB passwd file '%s'\n", filename));
 214                 return NT_STATUS_UNSUCCESSFUL;
 215         }
 216
 217         /* Check the version */
 218         version = tdb_fetch_int32(tdb,
 219                                                 TDBSAM_VERSION_STRING);
 220         if (version == -1)
 221                 version = 0;    /* Version not found, assume version 0 */
 222
 223         /* Compare the version */
 224         if (version > 2) {
 225                 /* Version more recent than the latest known */
 226                 DEBUG(0, ("TDBSAM version unknown: %d\n", version));
 227                 tdb_close(tdb);
 228                 return NT_STATUS_NOT_SUPPORTED;
 229         }
 230
 231         *accounts = NULL;
 232         *count = 0;
 233
 234         for (key = tdb_firstkey(tdb); key.dptr; key = tdb_nextkey(tdb, key))
 235         {
 236                 BOOL ret;
 237                 if (strncmp((const char *)key.dptr, "USER_", 5) != 0)
 238                         continue;
 239
 240                 val = tdb_fetch(tdb, key);
 241
 242                 *accounts = talloc_realloc(ctx, *accounts, struct samba3_samaccount, (*count)+1);
 243
 244                 switch (version)
 245                 {
 246                         case 0: ret = init_sam_from_buffer_v0(tdb, &(*accounts)[*count], val); break;
 247                         case 1: ret = init_sam_from_buffer_v1(tdb, &(*accounts)[*count], val); break;
 248                         case 2: ret = init_sam_from_buffer_v2(tdb, &(*accounts)[*count], val); break;
 249                         default: ret = False; break;
 250
 251                 }
 252
 253                 if (!ret) {
 254                         DEBUG(0, ("Unable to parse SAM account %s\n", key.dptr));
 255                 }
 256
 257                 (*count)++;
 258         }
 259
 260         tdb_close(tdb);
 261
 262         return NT_STATUS_OK;
 263 }