source/registry/reg_db.c

   1 /*
   2  *  Unix SMB/CIFS implementation.
   3  *  RPC Pipe client / server routines
   4  *  Copyright (C) Gerald Carter                     2002.
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 2 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19  */
  20
  21 /* Implementation of internal registry database functions. */
  22
  23 #include "includes.h"
  24
  25 #undef DBGC_CLASS
  26 #define DBGC_CLASS DBGC_RPC_SRV
  27
  28 static TDB_CONTEXT *tdb_reg;
  29
  30
  31 /***********************************************************************
  32  Open the registry data in the tdb
  33  ***********************************************************************/
  34
  35 static BOOL init_registry_data( void )
  36 {
  37         pstring         keyname;
  38         REGSUBKEY_CTR   subkeys;
  39
  40         ZERO_STRUCTP( &subkeys );
  41
  42         /* HKEY_LOCAL_MACHINE */
  43
  44         regsubkey_ctr_init( &subkeys );
  45         pstrcpy( keyname, KEY_HKLM );
  46         regsubkey_ctr_addkey( &subkeys, "SYSTEM" );
  47         if ( !regdb_store_reg_keys( keyname, &subkeys ))
  48                 return False;
  49         regsubkey_ctr_destroy( &subkeys );
  50
  51         regsubkey_ctr_init( &subkeys );
  52         pstrcpy( keyname, KEY_HKLM );
  53         pstrcat( keyname, "/SYSTEM" );
  54         regsubkey_ctr_addkey( &subkeys, "CurrentControlSet" );
  55         if ( !regdb_store_reg_keys( keyname, &subkeys ))
  56                 return False;
  57         regsubkey_ctr_destroy( &subkeys );
  58
  59         regsubkey_ctr_init( &subkeys );
  60         pstrcpy( keyname, KEY_HKLM );
  61         pstrcat( keyname, "/SYSTEM/CurrentControlSet" );
  62         regsubkey_ctr_addkey( &subkeys, "Control" );
  63         regsubkey_ctr_addkey( &subkeys, "Services" );
  64         if ( !regdb_store_reg_keys( keyname, &subkeys ))
  65                 return False;
  66         regsubkey_ctr_destroy( &subkeys );
  67
  68         regsubkey_ctr_init( &subkeys );
  69         pstrcpy( keyname, KEY_HKLM );
  70         pstrcat( keyname, "/SYSTEM/CurrentControlSet/Control" );
  71         regsubkey_ctr_addkey( &subkeys, "Print" );
  72         regsubkey_ctr_addkey( &subkeys, "ProductOptions" );
  73         if ( !regdb_store_reg_keys( keyname, &subkeys ))
  74                 return False;
  75         regsubkey_ctr_destroy( &subkeys );
  76
  77         pstrcpy( keyname, KEY_HKLM );
  78         pstrcat( keyname, "/SYSTEM/CurrentControlSet/Control/ProductOptions" );
  79         if ( !regdb_store_reg_keys( keyname, &subkeys ))
  80                 return False;
  81
  82         regsubkey_ctr_init( &subkeys );
  83         pstrcpy( keyname, KEY_HKLM );
  84         pstrcat( keyname, "/SYSTEM/CurrentControlSet/Services" );
  85         regsubkey_ctr_addkey( &subkeys, "Netlogon" );
  86         if ( !regdb_store_reg_keys( keyname, &subkeys ))
  87                 return False;
  88         regsubkey_ctr_destroy( &subkeys );
  89
  90         regsubkey_ctr_init( &subkeys );
  91         pstrcpy( keyname, KEY_HKLM );
  92         pstrcat( keyname, "/SYSTEM/CurrentControlSet/Services/Netlogon" );
  93         regsubkey_ctr_addkey( &subkeys, "Parameters" );
  94         if ( !regdb_store_reg_keys( keyname, &subkeys ))
  95                 return False;
  96         regsubkey_ctr_destroy( &subkeys );
  97
  98         pstrcpy( keyname, KEY_HKLM );
  99         pstrcat( keyname, "/SYSTEM/CurrentControlSet/Services/Netlogon/Parameters" );
 100         if ( !regdb_store_reg_keys( keyname, &subkeys ))
 101                 return False;
 102
 103         /* HKEY_USER */
 104
 105         pstrcpy( keyname, KEY_HKU );
 106         if ( !regdb_store_reg_keys( keyname, &subkeys ) )
 107                 return False;
 108
 109         /* HKEY_CLASSES_ROOT*/
 110
 111         pstrcpy( keyname, KEY_HKCR );
 112         if ( !regdb_store_reg_keys( keyname, &subkeys ) )
 113                 return False;
 114
 115         return True;
 116 }
 117
 118 /***********************************************************************
 119  Open the registry database
 120  ***********************************************************************/
 121
 122 BOOL init_registry_db( void )
 123 {
 124         static pid_t local_pid;
 125
 126         if (tdb_reg && local_pid == sys_getpid())
 127                 return True;
 128
 129         /*
 130          * try to open first without creating so we can determine
 131          * if we need to init the data in the registry
 132          */
 133
 134         tdb_reg = tdb_open_log(lock_path("registry.tdb"), 0, TDB_DEFAULT, O_RDWR, 0600);
 135         if ( !tdb_reg )
 136         {
 137                 tdb_reg = tdb_open_log(lock_path("registry.tdb"), 0, TDB_DEFAULT, O_RDWR|O_CREAT, 0600);
 138                 if ( !tdb_reg ) {
 139                         DEBUG(0,("init_registry: Failed to open registry %s (%s)\n",
 140                                 lock_path("registry.tdb"), strerror(errno) ));
 141                         return False;
 142                 }
 143
 144                 DEBUG(10,("init_registry: Successfully created registry tdb\n"));
 145
 146                 /* create the registry here */
 147                 if ( !init_registry_data() ) {
 148                         DEBUG(0,("init_registry: Failed to initiailize data in registry!\n"));
 149                         return False;
 150                 }
 151         }
 152
 153         local_pid = sys_getpid();
 154
 155         return True;
 156 }
 157
 158
 159
 160 /***********************************************************************
 161  Add subkey strings to the registry tdb under a defined key
 162  fmt is the same format as tdb_pack except this function only supports
 163  fstrings
 164
 165  The full path to the registry key is used as database after the
 166  \'s are converted to /'s.  Key string is also normalized to UPPER
 167  case.
 168  ***********************************************************************/
 169
 170 BOOL regdb_store_reg_keys( char *keyname, REGSUBKEY_CTR *ctr )
 171 {
 172         TDB_DATA kbuf, dbuf;
 173         char *buffer, *tmpbuf;
 174         int i = 0;
 175         uint32 len, buflen;
 176         BOOL ret = True;
 177         uint32 num_subkeys = regsubkey_ctr_numkeys( ctr );
 178
 179         if ( !keyname )
 180                 return False;
 181
 182         strupper_m( keyname  );
 183
 184         /* allocate some initial memory */
 185
 186         buffer = SMB_MALLOC(sizeof(pstring));
 187         buflen = sizeof(pstring);
 188         len = 0;
 189
 190         /* store the number of subkeys */
 191
 192         len += tdb_pack(buffer+len, buflen-len, "d", num_subkeys );
 193
 194         /* pack all the strings */
 195
 196         for (i=0; i<num_subkeys; i++) {
 197                 len += tdb_pack( buffer+len, buflen-len, "f", regsubkey_ctr_specific_key(ctr, i) );
 198                 if ( len > buflen ) {
 199                         /* allocate some extra space */
 200                         if ((tmpbuf = SMB_REALLOC( buffer, len*2 )) == NULL) {
 201                                 DEBUG(0,("regdb_store_reg_keys: Failed to realloc memory of size [%d]\n", len*2));
 202                                 ret = False;
 203                                 goto done;
 204                         }
 205                         buffer = tmpbuf;
 206                         buflen = len*2;
 207
 208                         len = tdb_pack( buffer+len, buflen-len, "f", regsubkey_ctr_specific_key(ctr, i) );
 209                 }
 210         }
 211
 212         /* finally write out the data */
 213
 214         kbuf.dptr = keyname;
 215         kbuf.dsize = strlen(keyname)+1;
 216         dbuf.dptr = buffer;
 217         dbuf.dsize = len;
 218         if ( tdb_store( tdb_reg, kbuf, dbuf, TDB_REPLACE ) == -1) {
 219                 ret = False;
 220                 goto done;
 221         }
 222
 223 done:
 224         SAFE_FREE( buffer );
 225
 226         return ret;
 227 }
 228
 229 /***********************************************************************
 230  Retrieve an array of strings containing subkeys.  Memory should be
 231  released by the caller.  The subkeys are stored in a catenated string
 232  of null terminated character strings
 233  ***********************************************************************/
 234
 235 int regdb_fetch_reg_keys( char* key, REGSUBKEY_CTR *ctr )
 236 {
 237         pstring path;
 238         uint32 num_items;
 239         TDB_DATA dbuf;
 240         char *buf;
 241         uint32 buflen, len;
 242         int i;
 243         fstring subkeyname;
 244
 245         DEBUG(10,("regdb_fetch_reg_keys: Enter key => [%s]\n", key ? key : "NULL"));
 246
 247         pstrcpy( path, key );
 248
 249         /* convert to key format */
 250         pstring_sub( path, "\\", "/" );
 251         strupper_m( path );
 252
 253         dbuf = tdb_fetch_bystring( tdb_reg, path );
 254
 255         buf = dbuf.dptr;
 256         buflen = dbuf.dsize;
 257
 258         if ( !buf ) {
 259                 DEBUG(5,("regdb_fetch_reg_keys: tdb lookup failed to locate key [%s]\n", key));
 260                 return -1;
 261         }
 262
 263         len = tdb_unpack( buf, buflen, "d", &num_items);
 264
 265         for (i=0; i<num_items; i++) {
 266                 len += tdb_unpack( buf+len, buflen-len, "f", subkeyname );
 267                 regsubkey_ctr_addkey( ctr, subkeyname );
 268         }
 269
 270         SAFE_FREE( dbuf.dptr );
 271
 272         DEBUG(10,("regdb_fetch_reg_keys: Exit [%d] items\n", num_items));
 273
 274         return num_items;
 275 }
 276
 277
 278 /***********************************************************************
 279  Retrieve an array of strings containing subkeys.  Memory should be
 280  released by the caller.  The subkeys are stored in a catenated string
 281  of null terminated character strings
 282  ***********************************************************************/
 283
 284 int regdb_fetch_reg_values( char* key, REGVAL_CTR *val )
 285 {
 286         return 0;
 287 }
 288
 289 /***********************************************************************
 290  Stub function since we do not currently support storing registry
 291  values in the registry.tdb
 292  ***********************************************************************/
 293
 294 BOOL regdb_store_reg_values( char *key, REGVAL_CTR *val )
 295 {
 296         return False;
 297 }
 298
 299
 300 /*
 301  * Table of function pointers for default access
 302  */
 303
 304 REGISTRY_OPS regdb_ops = {
 305         regdb_fetch_reg_keys,
 306         regdb_fetch_reg_values,
 307         regdb_store_reg_keys,
 308         regdb_store_reg_values
 309 };
 310
 311