source3/registry/reg_eventlog.c

   1
   2 /*
   3  *  Unix SMB/CIFS implementation.
   4  *  Virtual Windows Registry Layer
   5  *  Copyright (C) Marcin Krzysztof Porwit    2005,
   6  *  Copyright (C) Brian Moran                2005.
   7  *  Copyright (C) Gerald (Jerry) Carter      2005.
   8  *
   9  *  This program is free software; you can redistribute it and/or modify
  10  *  it under the terms of the GNU General Public License as published by
  11  *  the Free Software Foundation; either version 3 of the License, or
  12  *  (at your option) any later version.
  13  *
  14  *  This program is distributed in the hope that it will be useful,
  15  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  *  GNU General Public License for more details.
  18  *
  19  *  You should have received a copy of the GNU General Public License
  20  *  along with this program; if not, see <http://www.gnu.org/licenses/>.
  21  */
  22
  23 #include "includes.h"
  24
  25 #undef DBGC_CLASS
  26 #define DBGC_CLASS DBGC_REGISTRY
  27
  28 /**********************************************************************
  29  for an eventlog, add in the default values
  30 *********************************************************************/
  31
  32 bool eventlog_init_keys(void)
  33 {
  34         /* Find all of the eventlogs, add keys for each of them */
  35         const char **elogs = lp_eventlog_list();
  36         char *evtlogpath = NULL;
  37         char *evtfilepath = NULL;
  38         struct regsubkey_ctr *subkeys;
  39         struct regval_ctr *values;
  40         uint32 uiMaxSize;
  41         uint32 uiRetention;
  42         uint32 uiCategoryCount;
  43         DATA_BLOB data;
  44         TALLOC_CTX *ctx = talloc_tos();
  45         WERROR werr;
  46
  47         while (elogs && *elogs) {
  48                 werr = regsubkey_ctr_init(ctx, &subkeys);
  49                 if (!W_ERROR_IS_OK(werr)) {
  50                         DEBUG( 0, ( "talloc() failure!\n" ) );
  51                         return False;
  52                 }
  53                 regdb_fetch_keys(KEY_EVENTLOG, subkeys);
  54                 regsubkey_ctr_addkey( subkeys, *elogs );
  55                 if ( !regdb_store_keys( KEY_EVENTLOG, subkeys ) ) {
  56                         TALLOC_FREE(subkeys);
  57                         return False;
  58                 }
  59                 TALLOC_FREE(subkeys);
  60
  61                 /* add in the key of form KEY_EVENTLOG/Application */
  62                 DEBUG( 5,
  63                        ( "Adding key of [%s] to path of [%s]\n", *elogs,
  64                          KEY_EVENTLOG ) );
  65
  66                 evtlogpath = talloc_asprintf(ctx, "%s\\%s",
  67                           KEY_EVENTLOG, *elogs);
  68                 if (!evtlogpath) {
  69                         return false;
  70                 }
  71                 /* add in the key of form KEY_EVENTLOG/Application/Application */
  72                 DEBUG( 5,
  73                        ( "Adding key of [%s] to path of [%s]\n", *elogs,
  74                          evtlogpath ) );
  75                 werr = regsubkey_ctr_init(ctx, &subkeys);
  76                 if (!W_ERROR_IS_OK(werr)) {
  77                         DEBUG( 0, ( "talloc() failure!\n" ) );
  78                         return False;
  79                 }
  80                 regdb_fetch_keys( evtlogpath, subkeys );
  81                 regsubkey_ctr_addkey( subkeys, *elogs );
  82
  83                 if ( !regdb_store_keys( evtlogpath, subkeys ) ) {
  84                         TALLOC_FREE(subkeys);
  85                         return False;
  86                 }
  87                 TALLOC_FREE( subkeys );
  88
  89                 /* now add the values to the KEY_EVENTLOG/Application form key */
  90                 if (!(values = TALLOC_ZERO_P(ctx, struct regval_ctr))) {
  91                         DEBUG( 0, ( "talloc() failure!\n" ) );
  92                         return False;
  93                 }
  94                 DEBUG( 5,
  95                        ( "Storing values to eventlog path of [%s]\n",
  96                          evtlogpath ) );
  97                 regdb_fetch_values( evtlogpath, values );
  98
  99
 100                 if (!regval_ctr_key_exists(values, "MaxSize")) {
 101
 102                         /* assume we have none, add them all */
 103
 104                         /* hard code some initial values */
 105
 106                         /* uiDisplayNameId = 0x00000100; */
 107                         uiMaxSize = 0x00080000;
 108                         uiRetention = 0x93A80;
 109
 110                         regval_ctr_addvalue(values, "MaxSize", REG_DWORD,
 111                                              (char *)&uiMaxSize,
 112                                              sizeof(uint32));
 113
 114                         regval_ctr_addvalue(values, "Retention", REG_DWORD,
 115                                              (char *)&uiRetention,
 116                                              sizeof(uint32));
 117
 118                         regval_ctr_addvalue_sz(values, "PrimaryModule", *elogs);
 119                         push_reg_sz(talloc_tos(), &data, *elogs);
 120
 121                         regval_ctr_addvalue(values, "Sources", REG_MULTI_SZ,
 122                                              (char *)data.data,
 123                                              data.length);
 124
 125                         evtfilepath = talloc_asprintf(ctx,
 126                                         "%%SystemRoot%%\\system32\\config\\%s.tdb",
 127                                         *elogs);
 128                         if (!evtfilepath) {
 129                                 TALLOC_FREE(values);
 130                         }
 131                         push_reg_sz(talloc_tos(), &data, evtfilepath);
 132                         regval_ctr_addvalue(values, "File", REG_EXPAND_SZ, (char *)data.data,
 133                                              data.length);
 134                         regdb_store_values(evtlogpath, values);
 135
 136                 }
 137
 138                 TALLOC_FREE(values);
 139
 140                 /* now do the values under KEY_EVENTLOG/Application/Application */
 141                 TALLOC_FREE(evtlogpath);
 142                 evtlogpath = talloc_asprintf(ctx, "%s\\%s\\%s",
 143                           KEY_EVENTLOG, *elogs, *elogs);
 144                 if (!evtlogpath) {
 145                         return false;
 146                 }
 147                 if (!(values = TALLOC_ZERO_P(ctx, struct regval_ctr))) {
 148                         DEBUG( 0, ( "talloc() failure!\n" ) );
 149                         return False;
 150                 }
 151                 DEBUG( 5,
 152                        ( "Storing values to eventlog path of [%s]\n",
 153                          evtlogpath));
 154                 regdb_fetch_values(evtlogpath, values);
 155                 if (!regval_ctr_key_exists( values, "CategoryCount")) {
 156
 157                         /* hard code some initial values */
 158
 159                         uiCategoryCount = 0x00000007;
 160                         regval_ctr_addvalue( values, "CategoryCount",
 161                                              REG_DWORD,
 162                                              ( char * ) &uiCategoryCount,
 163                                              sizeof( uint32 ) );
 164                         push_reg_sz(talloc_tos(), &data,
 165                                       "%SystemRoot%\\system32\\eventlog.dll");
 166
 167                         regval_ctr_addvalue( values, "CategoryMessageFile",
 168                                              REG_EXPAND_SZ,
 169                                              ( char * ) data.data,
 170                                              data.length);
 171                         regdb_store_values( evtlogpath, values );
 172                 }
 173                 TALLOC_FREE(values);
 174                 elogs++;
 175         }
 176
 177         return true;
 178 }
 179
 180 /*********************************************************************
 181  for an eventlog, add in a source name. If the eventlog doesn't
 182  exist (not in the list) do nothing.   If a source for the log
 183  already exists, change the information (remove, replace)
 184 *********************************************************************/
 185
 186 bool eventlog_add_source( const char *eventlog, const char *sourcename,
 187                           const char *messagefile )
 188 {
 189         /* Find all of the eventlogs, add keys for each of them */
 190         /* need to add to the value KEY_EVENTLOG/<eventlog>/Sources string (Creating if necessary)
 191            need to add KEY of source to KEY_EVENTLOG/<eventlog>/<source> */
 192
 193         const char **elogs = lp_eventlog_list(  );
 194         const char **wrklist, **wp;
 195         char *evtlogpath = NULL;
 196         struct regsubkey_ctr *subkeys;
 197         struct regval_ctr *values;
 198         struct regval_blob *rval;
 199         int ii = 0;
 200         bool already_in;
 201         int i;
 202         int numsources = 0;
 203         TALLOC_CTX *ctx = talloc_tos();
 204         WERROR werr;
 205         DATA_BLOB blob;
 206
 207         if (!elogs) {
 208                 return False;
 209         }
 210
 211         for ( i = 0; elogs[i]; i++ ) {
 212                 if ( strequal( elogs[i], eventlog ) )
 213                         break;
 214         }
 215
 216         if ( !elogs[i] ) {
 217                 DEBUG( 0,
 218                        ( "Eventlog [%s] not found in list of valid event logs\n",
 219                          eventlog ) );
 220                 return false;   /* invalid named passed in */
 221         }
 222
 223         /* have to assume that the evenlog key itself exists at this point */
 224         /* add in a key of [sourcename] under the eventlog key */
 225
 226         /* todo add to Sources */
 227
 228         if (!( values = TALLOC_ZERO_P(ctx, struct regval_ctr))) {
 229                 DEBUG( 0, ( "talloc() failure!\n" ));
 230                 return false;
 231         }
 232
 233         evtlogpath = talloc_asprintf(ctx, "%s\\%s", KEY_EVENTLOG, eventlog);
 234         if (!evtlogpath) {
 235                 TALLOC_FREE(values);
 236                 return false;
 237         }
 238
 239         regdb_fetch_values( evtlogpath, values );
 240
 241
 242         if ( !( rval = regval_ctr_getvalue( values, "Sources" ) ) ) {
 243                 DEBUG( 0, ( "No Sources value for [%s]!\n", eventlog ) );
 244                 return False;
 245         }
 246         /* perhaps this adding a new string to a multi_sz should be a fn? */
 247         /* check to see if it's there already */
 248
 249         if ( rval->type != REG_MULTI_SZ ) {
 250                 DEBUG( 0,
 251                        ( "Wrong type for Sources, should be REG_MULTI_SZ\n" ) );
 252                 return False;
 253         }
 254         /* convert to a 'regulah' chars to do some comparisons */
 255
 256         already_in = False;
 257         wrklist = NULL;
 258         dump_data( 1, rval->data_p, rval->size );
 259
 260         blob = data_blob_const(rval->data_p, rval->size);
 261         if (!pull_reg_multi_sz(talloc_tos(), &blob, &wrklist)) {
 262                 return false;
 263         }
 264
 265         for (ii=0; wrklist[ii]; ii++) {
 266                 numsources++;
 267         }
 268
 269         if (numsources > 0) {
 270                 /* see if it's in there already */
 271                 wp = wrklist;
 272
 273                 while (wp && *wp ) {
 274                         if ( strequal( *wp, sourcename ) ) {
 275                                 DEBUG( 5,
 276                                        ( "Source name [%s] already in list for [%s] \n",
 277                                          sourcename, eventlog ) );
 278                                 already_in = True;
 279                                 break;
 280                         }
 281                         wp++;
 282                 }
 283         } else {
 284                 DEBUG( 3,
 285                        ( "Nothing in the sources list, this might be a problem\n" ) );
 286         }
 287
 288         wp = wrklist;
 289
 290         if ( !already_in ) {
 291                 /* make a new list with an additional entry; copy values, add another */
 292                 wp = TALLOC_ARRAY(ctx, const char *, numsources + 2 );
 293
 294                 if ( !wp ) {
 295                         DEBUG( 0, ( "talloc() failed \n" ) );
 296                         return False;
 297                 }
 298                 memcpy( wp, wrklist, sizeof( char * ) * numsources );
 299                 *( wp + numsources ) = ( char * ) sourcename;
 300                 *( wp + numsources + 1 ) = NULL;
 301                 if (!push_reg_multi_sz(ctx, &blob, wp)) {
 302                         return false;
 303                 }
 304                 dump_data( 1, blob.data, blob.length);
 305                 regval_ctr_addvalue( values, "Sources", REG_MULTI_SZ,
 306                                      ( char * ) blob.data, blob.length);
 307                 regdb_store_values( evtlogpath, values );
 308                 data_blob_free(&blob);
 309         } else {
 310                 DEBUG( 3,
 311                        ( "Source name [%s] found in existing list of sources\n",
 312                          sourcename ) );
 313         }
 314         TALLOC_FREE(values);
 315         TALLOC_FREE(wrklist);   /*  */
 316
 317         werr = regsubkey_ctr_init(ctx, &subkeys);
 318         if (!W_ERROR_IS_OK(werr)) {
 319                 DEBUG( 0, ( "talloc() failure!\n" ) );
 320                 return False;
 321         }
 322         TALLOC_FREE(evtlogpath);
 323         evtlogpath = talloc_asprintf(ctx, "%s\\%s", KEY_EVENTLOG, eventlog );
 324         if (!evtlogpath) {
 325                 TALLOC_FREE(subkeys);
 326                 return false;
 327         }
 328
 329         regdb_fetch_keys( evtlogpath, subkeys );
 330
 331         if ( !regsubkey_ctr_key_exists( subkeys, sourcename ) ) {
 332                 DEBUG( 5,
 333                        ( " Source name [%s] for eventlog [%s] didn't exist, adding \n",
 334                          sourcename, eventlog ) );
 335                 regsubkey_ctr_addkey( subkeys, sourcename );
 336                 if ( !regdb_store_keys( evtlogpath, subkeys ) )
 337                         return False;
 338         }
 339         TALLOC_FREE(subkeys);
 340
 341         /* at this point KEY_EVENTLOG/<eventlog>/<sourcename> key is in there. Now need to add EventMessageFile */
 342
 343         /* now allocate room for the source's subkeys */
 344
 345         werr = regsubkey_ctr_init(ctx, &subkeys);
 346         if (!W_ERROR_IS_OK(werr)) {
 347                 DEBUG( 0, ( "talloc() failure!\n" ) );
 348                 return False;
 349         }
 350         TALLOC_FREE(evtlogpath);
 351         evtlogpath = talloc_asprintf(ctx, "%s\\%s\\%s",
 352                   KEY_EVENTLOG, eventlog, sourcename);
 353         if (!evtlogpath) {
 354                 TALLOC_FREE(subkeys);
 355                 return false;
 356         }
 357
 358         regdb_fetch_keys( evtlogpath, subkeys );
 359
 360         /* now add the values to the KEY_EVENTLOG/Application form key */
 361         if ( !( values = TALLOC_ZERO_P(ctx, struct regval_ctr ) ) ) {
 362                 DEBUG( 0, ( "talloc() failure!\n" ) );
 363                 return False;
 364         }
 365         DEBUG( 5,
 366                ( "Storing EventMessageFile [%s] to eventlog path of [%s]\n",
 367                  messagefile, evtlogpath ) );
 368
 369         regdb_fetch_values( evtlogpath, values );
 370
 371         regval_ctr_addvalue_sz(values, "EventMessageFile", messagefile);
 372         regdb_store_values( evtlogpath, values );
 373
 374         TALLOC_FREE(values);
 375
 376         return True;
 377 }