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 2 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, write to the Free Software
  20    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21 */
  22
  23 #include "includes.h"
  24 #include "system/iconv.h"
  25 #include "system/filesys.h"
  26 #include "lib/tdb/include/tdbutil.h"
  27 #include "lib/samba3/samba3.h"
  28
  29 #define TDB_FORMAT_STRING_V0       "ddddddBBBBBBBBBBBBddBBwdwdBwwd"
  30 #define TDB_FORMAT_STRING_V1       "dddddddBBBBBBBBBBBBddBBwdwdBwwd"
  31 #define TDB_FORMAT_STRING_V2       "dddddddBBBBBBBBBBBBddBBBwwdBwwd"
  32 #define TDBSAM_VERSION_STRING      "INFO/version"
  33
  34 static BOOL init_sam_from_buffer_v0(TDB_CONTEXT *tdb, struct samba3_samaccount *sampass, TDB_DATA buf)
  35 {
  36         uint32_t        username_len, domain_len, nt_username_len,
  37                 dir_drive_len, unknown_str_len, munged_dial_len,
  38                 fullname_len, homedir_len, logon_script_len,
  39                 profile_path_len, acct_desc_len, workstations_len;
  40
  41         uint32_t        remove_me;
  42         uint32_t                len = 0;
  43         uint32_t                lm_pw_len, nt_pw_len, hourslen;
  44
  45         if(sampass == NULL || buf.dptr == NULL) {
  46                 DEBUG(0, ("init_sam_from_buffer_v0: NULL parameters found!\n"));
  47                 return False;
  48         }
  49
  50         /* unpack the buffer into variables */
  51         len = tdb_unpack (tdb, (char *)buf.dptr, buf.dsize, TDB_FORMAT_STRING_V0,
  52                 &sampass->logon_time,                                   /* d */
  53                 &sampass->logoff_time,                                  /* d */
  54                 &sampass->kickoff_time,                                 /* d */
  55                 &sampass->pass_last_set_time,                           /* d */
  56                 &sampass->pass_can_change_time,                         /* d */
  57                 &sampass->pass_must_change_time,                        /* d */
  58                 &username_len, &sampass->username,                      /* B */
  59                 &domain_len, &sampass->domain,                          /* B */
  60                 &nt_username_len, &sampass->nt_username,                /* B */
  61                 &fullname_len, &sampass->fullname,                      /* B */
  62                 &homedir_len, &sampass->homedir,                        /* B */
  63                 &dir_drive_len, &sampass->dir_drive,                    /* B */
  64                 &logon_script_len, &sampass->logon_script,              /* B */
  65                 &profile_path_len, &sampass->profile_path,              /* B */
  66                 &acct_desc_len, &sampass->acct_desc,                    /* B */
  67                 &workstations_len, &sampass->workstations,              /* B */
  68                 &unknown_str_len, &sampass->unknown_str,                /* B */
  69                 &munged_dial_len, &sampass->munged_dial,                /* B */
  70                 &sampass->user_rid,                                     /* d */
  71                 &sampass->group_rid,                                    /* d */
  72                 &lm_pw_len, &sampass->lm_pw_ptr,                        /* B */
  73                 &nt_pw_len, &sampass->nt_pw_ptr,                        /* B */
  74                 &sampass->acct_ctrl,                                    /* w */
  75                 &remove_me, /* remove on the next TDB_FORMAT upgarde */ /* d */
  76                 &sampass->logon_divs,                                   /* w */
  77                 &sampass->hours_len,                                    /* d */
  78                 &hourslen, &sampass->hours,                             /* B */
  79                 &sampass->bad_password_count,                           /* w */
  80                 &sampass->logon_count,                                  /* w */
  81                 &sampass->unknown_6);                                   /* d */
  82
  83         if (len == (uint32_t) -1)  {
  84                 return False;
  85         }
  86
  87         if (lm_pw_len != 16) {
  88                 sampass->lm_pw_ptr = NULL;
  89         }
  90
  91         if (nt_pw_len != 16) {
  92                 sampass->nt_pw_ptr = NULL;
  93         }
  94
  95         return True;
  96 }
  97
  98 static BOOL init_sam_from_buffer_v1(TDB_CONTEXT *tdb, struct samba3_samaccount *sampass, TDB_DATA buf)
  99 {
 100         uint32_t        username_len, domain_len, nt_username_len,
 101                 dir_drive_len, unknown_str_len, munged_dial_len,
 102                 fullname_len, homedir_len, logon_script_len,
 103                 profile_path_len, acct_desc_len, workstations_len;
 104
 105         uint32_t        remove_me;
 106         uint32_t                len = 0;
 107         uint32_t                lm_pw_len, nt_pw_len, hourslen;
 108
 109         if(sampass == NULL || buf.dptr == NULL) {
 110                 DEBUG(0, ("init_sam_from_buffer_v1: NULL parameters found!\n"));
 111                 return False;
 112         }
 113
 114         /* unpack the buffer into variables */
 115         len = tdb_unpack (tdb, (char *)buf.dptr, buf.dsize, TDB_FORMAT_STRING_V1,
 116                 &sampass->logon_time,                                   /* d */
 117                 &sampass->logoff_time,                                  /* d */
 118                 &sampass->kickoff_time,                         /* d */
 119                 /* Change from V0 is addition of bad_password_time field. */
 120                 &sampass->bad_password_time,                            /* d */
 121                 &sampass->pass_last_set_time,                           /* d */
 122                 &sampass->pass_can_change_time,                 /* d */
 123                 &sampass->pass_must_change_time,                        /* d */
 124                 &username_len, &sampass->username,                      /* B */
 125                 &domain_len, &sampass->domain,          /* B */
 126                 &nt_username_len, &sampass->nt_username,        /* B */
 127                 &fullname_len, &sampass->fullname,                      /* B */
 128                 &homedir_len, &sampass->homedir,                        /* B */
 129                 &dir_drive_len, &sampass->dir_drive,                    /* B */
 130                 &logon_script_len, &sampass->logon_script,              /* B */
 131                 &profile_path_len, &sampass->profile_path,              /* B */
 132                 &acct_desc_len, &sampass->acct_desc,                    /* B */
 133                 &workstations_len, &sampass->workstations,              /* B */
 134                 &unknown_str_len, &sampass->unknown_str,                /* B */
 135                 &munged_dial_len, &sampass->munged_dial,                /* B */
 136                 &sampass->user_rid,                                     /* d */
 137                 &sampass->group_rid,                                    /* d */
 138                 &lm_pw_len, &sampass->lm_pw_ptr,                        /* B */
 139                 &nt_pw_len, &sampass->nt_pw_ptr,                        /* B */
 140                 &sampass->acct_ctrl,                                    /* w */
 141                 &remove_me,                                             /* d */
 142                 &sampass->logon_divs,                                   /* w */
 143                 &sampass->hours_len,                                    /* d */
 144                 &hourslen, &sampass->hours,                             /* B */
 145                 &sampass->bad_password_count,                           /* w */
 146                 &sampass->logon_count,                                  /* w */
 147                 &sampass->unknown_6);                                   /* d */
 148
 149         if (len == (uint32_t) -1)  {
 150                 return False;
 151         }
 152
 153         if (sampass->lm_pw_ptr && lm_pw_len != 16) {
 154                 sampass->lm_pw_ptr = NULL;
 155         }
 156
 157         if (sampass->nt_pw_ptr && nt_pw_len != 16) {
 158                 sampass->nt_pw_ptr = NULL;
 159         }
 160
 161         return True;
 162 }
 163
 164 static BOOL init_sam_from_buffer_v2(TDB_CONTEXT *tdb, struct samba3_samaccount *sampass, TDB_DATA buf)
 165 {
 166         uint32_t        username_len, domain_len, nt_username_len,
 167                 dir_drive_len, unknown_str_len, munged_dial_len,
 168                 fullname_len, homedir_len, logon_script_len,
 169                 profile_path_len, acct_desc_len, workstations_len;
 170
 171         uint32_t                len = 0;
 172         uint32_t                lm_pw_len, nt_pw_len, nt_pw_hist_len, hourslen;
 173
 174         if(sampass == NULL || buf.dptr == NULL) {
 175                 DEBUG(0, ("init_sam_from_buffer_v2: NULL parameters found!\n"));
 176                 return False;
 177         }
 178
 179         /* unpack the buffer into variables */
 180         len = tdb_unpack (tdb, (char *)buf.dptr, buf.dsize, TDB_FORMAT_STRING_V2,
 181                 &sampass->logon_time,                                   /* d */
 182                 &sampass->logoff_time,                                  /* d */
 183                 &sampass->kickoff_time,                                 /* d */
 184                 &sampass->bad_password_time,                            /* d */
 185                 &sampass->pass_last_set_time,                           /* d */
 186                 &sampass->pass_can_change_time,                         /* d */
 187                 &sampass->pass_must_change_time,                        /* d */
 188                 &username_len, &sampass->username,                      /* B */
 189                 &domain_len, &sampass->domain,                          /* B */
 190                 &nt_username_len, &sampass->nt_username,                /* B */
 191                 &fullname_len, &sampass->fullname,                      /* B */
 192                 &homedir_len, &sampass->homedir,                        /* B */
 193                 &dir_drive_len, &sampass->dir_drive,                    /* B */
 194                 &logon_script_len, &sampass->logon_script,              /* B */
 195                 &profile_path_len, &sampass->profile_path,              /* B */
 196                 &acct_desc_len, &sampass->acct_desc,                    /* B */
 197                 &workstations_len, &sampass->workstations,              /* B */
 198                 &unknown_str_len, &sampass->unknown_str,                /* B */
 199                 &munged_dial_len, &sampass->munged_dial,                /* B */
 200                 &sampass->user_rid,                                     /* d */
 201                 &sampass->group_rid,                                    /* d */
 202                 &lm_pw_len, &sampass->lm_pw_ptr,                        /* B */
 203                 &nt_pw_len, &sampass->nt_pw_ptr,                        /* B */
 204                 /* Change from V1 is addition of password history field. */
 205                 &nt_pw_hist_len, &sampass->nt_pw_hist_ptr,              /* B */
 206                 &sampass->acct_ctrl,                                    /* w */
 207                 /* Also "remove_me" field was removed. */
 208                 &sampass->logon_divs,                                   /* w */
 209                 &sampass->hours_len,                                    /* d */
 210                 &hourslen, &sampass->hours,                             /* B */
 211                 &sampass->bad_password_count,                           /* w */
 212                 &sampass->logon_count,                                  /* w */
 213                 &sampass->unknown_6);                                   /* d */
 214
 215         if (len == (uint32_t) -1)  {
 216                 return False;
 217         }
 218
 219         if (sampass->lm_pw_ptr && lm_pw_len != 16) {
 220                 sampass->lm_pw_ptr = NULL;
 221         }
 222
 223         if (sampass->nt_pw_ptr && nt_pw_len != 16) {
 224                 sampass->nt_pw_ptr = NULL;
 225         }
 226
 227         return True;
 228 }
 229
 230 NTSTATUS samba3_read_tdbsam(const char *filename, TALLOC_CTX *ctx, struct samba3_samaccount **accounts, uint32_t *count)
 231 {
 232         int32_t version;
 233         TDB_CONTEXT *tdb;
 234         TDB_DATA key, val;
 235
 236         /* Try to open tdb passwd */
 237         if (!(tdb = tdb_open(filename, 0, TDB_DEFAULT, O_RDONLY, 0600))) {
 238                 DEBUG(0, ("Unable to open TDB passwd file '%s'\n", filename));
 239                 return NT_STATUS_UNSUCCESSFUL;
 240         }
 241
 242         /* Check the version */
 243         version = tdb_fetch_int32(tdb,
 244                                                 TDBSAM_VERSION_STRING);
 245         if (version == -1)
 246                 version = 0;    /* Version not found, assume version 0 */
 247
 248         /* Compare the version */
 249         if (version > 2) {
 250                 /* Version more recent than the latest known */
 251                 DEBUG(0, ("TDBSAM version unknown: %d\n", version));
 252                 tdb_close(tdb);
 253                 return NT_STATUS_NOT_SUPPORTED;
 254         }
 255
 256         *accounts = NULL;
 257         *count = 0;
 258
 259         for (key = tdb_firstkey(tdb); key.dptr; key = tdb_nextkey(tdb, key))
 260         {
 261                 BOOL ret;
 262                 if (strncmp(key.dptr, "USER_", 5) != 0)
 263                         continue;
 264
 265                 val = tdb_fetch(tdb, key);
 266
 267                 *accounts = talloc_realloc(ctx, *accounts, struct samba3_samaccount, (*count)+1);
 268
 269                 switch (version)
 270                 {
 271                         case 0: ret = init_sam_from_buffer_v0(tdb, &(*accounts)[*count], val); break;
 272                         case 1: ret = init_sam_from_buffer_v1(tdb, &(*accounts)[*count], val); break;
 273                         case 2: ret = init_sam_from_buffer_v2(tdb, &(*accounts)[*count], val); break;
 274
 275                 }
 276
 277                 if (!ret) {
 278                         DEBUG(0, ("Unable to parse SAM account %s\n", key.dptr));
 279                 }
 280
 281                 (*count)++;
 282         }
 283
 284         tdb_close(tdb);
 285
 286         return NT_STATUS_OK;
 287 }