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 #include "registry.h"
  25
  26 #undef DBGC_CLASS
  27 #define DBGC_CLASS DBGC_REGISTRY
  28
  29 /**********************************************************************
  30  for an eventlog, add in the default values
  31 *********************************************************************/
  32
  33 bool eventlog_init_keys(void)
  34 {
  35         /* Find all of the eventlogs, add keys for each of them */
  36         const char **elogs = lp_eventlog_list();
  37         char *evtlogpath = NULL;
  38         char *evtfilepath = NULL;
  39         struct regsubkey_ctr *subkeys;
  40         struct regval_ctr *values;
  41         uint32 uiMaxSize;
  42         uint32 uiRetention;
  43         uint32 uiCategoryCount;
  44         DATA_BLOB data;
  45         TALLOC_CTX *ctx = talloc_tos();
  46         WERROR werr;
  47
  48         while (elogs && *elogs) {
  49                 werr = regsubkey_ctr_init(ctx, &subkeys);
  50                 if (!W_ERROR_IS_OK(werr)) {
  51                         DEBUG( 0, ( "talloc() failure!\n" ) );
  52                         return False;
  53                 }
  54                 regdb_fetch_keys(KEY_EVENTLOG, subkeys);
  55                 regsubkey_ctr_addkey( subkeys, *elogs );
  56                 if ( !regdb_store_keys( KEY_EVENTLOG, subkeys ) ) {
  57                         TALLOC_FREE(subkeys);
  58                         return False;
  59                 }
  60                 TALLOC_FREE(subkeys);
  61
  62                 /* add in the key of form KEY_EVENTLOG/Application */
  63                 DEBUG( 5,
  64                        ( "Adding key of [%s] to path of [%s]\n", *elogs,
  65                          KEY_EVENTLOG ) );
  66
  67                 evtlogpath = talloc_asprintf(ctx, "%s\\%s",
  68                           KEY_EVENTLOG, *elogs);
  69                 if (!evtlogpath) {
  70                         return false;
  71                 }
  72                 /* add in the key of form KEY_EVENTLOG/Application/Application */
  73                 DEBUG( 5,
  74                        ( "Adding key of [%s] to path of [%s]\n", *elogs,
  75                          evtlogpath ) );
  76                 werr = regsubkey_ctr_init(ctx, &subkeys);
  77                 if (!W_ERROR_IS_OK(werr)) {
  78                         DEBUG( 0, ( "talloc() failure!\n" ) );
  79                         return False;
  80                 }
  81                 regdb_fetch_keys( evtlogpath, subkeys );
  82                 regsubkey_ctr_addkey( subkeys, *elogs );
  83
  84                 if ( !regdb_store_keys( evtlogpath, subkeys ) ) {
  85                         TALLOC_FREE(subkeys);
  86                         return False;
  87                 }
  88                 TALLOC_FREE( subkeys );
  89
  90                 /* now add the values to the KEY_EVENTLOG/Application form key */
  91                 if (!(values = TALLOC_ZERO_P(ctx, struct regval_ctr))) {
  92                         DEBUG( 0, ( "talloc() failure!\n" ) );
  93                         return False;
  94                 }
  95                 DEBUG( 5,
  96                        ( "Storing values to eventlog path of [%s]\n",
  97                          evtlogpath ) );
  98                 regdb_fetch_values( evtlogpath, values );
  99
 100
 101                 if (!regval_ctr_key_exists(values, "MaxSize")) {
 102
 103                         /* assume we have none, add them all */
 104
 105                         /* hard code some initial values */
 106
 107                         /* uiDisplayNameId = 0x00000100; */
 108                         uiMaxSize = 0x00080000;
 109                         uiRetention = 0x93A80;
 110
 111                         regval_ctr_addvalue(values, "MaxSize", REG_DWORD,
 112                                              (char *)&uiMaxSize,
 113                                              sizeof(uint32));
 114
 115                         regval_ctr_addvalue(values, "Retention", REG_DWORD,
 116                                              (char *)&uiRetention,
 117                                              sizeof(uint32));
 118
 119                         regval_ctr_addvalue_sz(values, "PrimaryModule", *elogs);
 120                         push_reg_sz(talloc_tos(), &data, *elogs);
 121
 122                         regval_ctr_addvalue(values, "Sources", REG_MULTI_SZ,
 123                                              (char *)data.data,
 124                                              data.length);
 125
 126                         evtfilepath = talloc_asprintf(ctx,
 127                                         "%%SystemRoot%%\\system32\\config\\%s.tdb",
 128                                         *elogs);
 129                         if (!evtfilepath) {
 130                                 TALLOC_FREE(values);
 131                         }
 132                         push_reg_sz(talloc_tos(), &data, evtfilepath);
 133                         regval_ctr_addvalue(values, "File", REG_EXPAND_SZ, (char *)data.data,
 134                                              data.length);
 135                         regdb_store_values(evtlogpath, values);
 136
 137                 }
 138
 139                 TALLOC_FREE(values);
 140
 141                 /* now do the values under KEY_EVENTLOG/Application/Application */
 142                 TALLOC_FREE(evtlogpath);
 143                 evtlogpath = talloc_asprintf(ctx, "%s\\%s\\%s",
 144                           KEY_EVENTLOG, *elogs, *elogs);
 145                 if (!evtlogpath) {
 146                         return false;
 147                 }
 148                 if (!(values = TALLOC_ZERO_P(ctx, struct regval_ctr))) {
 149                         DEBUG( 0, ( "talloc() failure!\n" ) );
 150                         return False;
 151                 }
 152                 DEBUG( 5,
 153                        ( "Storing values to eventlog path of [%s]\n",
 154                          evtlogpath));
 155                 regdb_fetch_values(evtlogpath, values);
 156                 if (!regval_ctr_key_exists( values, "CategoryCount")) {
 157
 158                         /* hard code some initial values */
 159
 160                         uiCategoryCount = 0x00000007;
 161                         regval_ctr_addvalue( values, "CategoryCount",
 162                                              REG_DWORD,
 163                                              ( char * ) &uiCategoryCount,
 164                                              sizeof( uint32 ) );
 165                         push_reg_sz(talloc_tos(), &data,
 166                                       "%SystemRoot%\\system32\\eventlog.dll");
 167
 168                         regval_ctr_addvalue( values, "CategoryMessageFile",
 169                                              REG_EXPAND_SZ,
 170                                              ( char * ) data.data,
 171                                              data.length);
 172                         regdb_store_values( evtlogpath, values );
 173                 }
 174                 TALLOC_FREE(values);
 175                 elogs++;
 176         }
 177
 178         return true;
 179 }
 180
 181 /*********************************************************************
 182  for an eventlog, add in a source name. If the eventlog doesn't
 183  exist (not in the list) do nothing.   If a source for the log
 184  already exists, change the information (remove, replace)
 185 *********************************************************************/
 186
 187 bool eventlog_add_source( const char *eventlog, const char *sourcename,
 188                           const char *messagefile )
 189 {
 190         /* Find all of the eventlogs, add keys for each of them */
 191         /* need to add to the value KEY_EVENTLOG/<eventlog>/Sources string (Creating if necessary)
 192            need to add KEY of source to KEY_EVENTLOG/<eventlog>/<source> */
 193
 194         const char **elogs = lp_eventlog_list(  );
 195         const char **wrklist, **wp;
 196         char *evtlogpath = NULL;
 197         struct regsubkey_ctr *subkeys;
 198         struct regval_ctr *values;
 199         struct regval_blob *rval;
 200         int ii = 0;
 201         bool already_in;
 202         int i;
 203         int numsources = 0;
 204         TALLOC_CTX *ctx = talloc_tos();
 205         WERROR werr;
 206         DATA_BLOB blob;
 207
 208         if (!elogs) {
 209                 return False;
 210         }
 211
 212         for ( i = 0; elogs[i]; i++ ) {
 213                 if ( strequal( elogs[i], eventlog ) )
 214                         break;
 215         }
 216
 217         if ( !elogs[i] ) {
 218                 DEBUG( 0,
 219                        ( "Eventlog [%s] not found in list of valid event logs\n",
 220                          eventlog ) );
 221                 return false;   /* invalid named passed in */
 222         }
 223
 224         /* have to assume that the evenlog key itself exists at this point */
 225         /* add in a key of [sourcename] under the eventlog key */
 226
 227         /* todo add to Sources */
 228
 229         if (!( values = TALLOC_ZERO_P(ctx, struct regval_ctr))) {
 230                 DEBUG( 0, ( "talloc() failure!\n" ));
 231                 return false;
 232         }
 233
 234         evtlogpath = talloc_asprintf(ctx, "%s\\%s", KEY_EVENTLOG, eventlog);
 235         if (!evtlogpath) {
 236                 TALLOC_FREE(values);
 237                 return false;
 238         }
 239
 240         regdb_fetch_values( evtlogpath, values );
 241
 242
 243         if ( !( rval = regval_ctr_getvalue( values, "Sources" ) ) ) {
 244                 DEBUG( 0, ( "No Sources value for [%s]!\n", eventlog ) );
 245                 return False;
 246         }
 247         /* perhaps this adding a new string to a multi_sz should be a fn? */
 248         /* check to see if it's there already */
 249
 250         if ( rval->type != REG_MULTI_SZ ) {
 251                 DEBUG( 0,
 252                        ( "Wrong type for Sources, should be REG_MULTI_SZ\n" ) );
 253                 return False;
 254         }
 255         /* convert to a 'regulah' chars to do some comparisons */
 256
 257         already_in = False;
 258         wrklist = NULL;
 259         dump_data( 1, rval->data_p, rval->size );
 260
 261         blob = data_blob_const(rval->data_p, rval->size);
 262         if (!pull_reg_multi_sz(talloc_tos(), &blob, &wrklist)) {
 263                 return false;
 264         }
 265
 266         for (ii=0; wrklist[ii]; ii++) {
 267                 numsources++;
 268         }
 269
 270         if (numsources > 0) {
 271                 /* see if it's in there already */
 272                 wp = wrklist;
 273
 274                 while (wp && *wp ) {
 275                         if ( strequal( *wp, sourcename ) ) {
 276                                 DEBUG( 5,
 277                                        ( "Source name [%s] already in list for [%s] \n",
 278                                          sourcename, eventlog ) );
 279                                 already_in = True;
 280                                 break;
 281                         }
 282                         wp++;
 283                 }
 284         } else {
 285                 DEBUG( 3,
 286                        ( "Nothing in the sources list, this might be a problem\n" ) );
 287         }
 288
 289         wp = wrklist;
 290
 291         if ( !already_in ) {
 292                 /* make a new list with an additional entry; copy values, add another */
 293                 wp = TALLOC_ARRAY(ctx, const char *, numsources + 2 );
 294
 295                 if ( !wp ) {
 296                         DEBUG( 0, ( "talloc() failed \n" ) );
 297                         return False;
 298                 }
 299                 memcpy( wp, wrklist, sizeof( char * ) * numsources );
 300                 *( wp + numsources ) = ( char * ) sourcename;
 301                 *( wp + numsources + 1 ) = NULL;
 302                 if (!push_reg_multi_sz(ctx, &blob, wp)) {
 303                         return false;
 304                 }
 305                 dump_data( 1, blob.data, blob.length);
 306                 regval_ctr_addvalue( values, "Sources", REG_MULTI_SZ,
 307                                      ( char * ) blob.data, blob.length);
 308                 regdb_store_values( evtlogpath, values );
 309                 data_blob_free(&blob);
 310         } else {
 311                 DEBUG( 3,
 312                        ( "Source name [%s] found in existing list of sources\n",
 313                          sourcename ) );
 314         }
 315         TALLOC_FREE(values);
 316         TALLOC_FREE(wrklist);   /*  */
 317
 318         werr = regsubkey_ctr_init(ctx, &subkeys);
 319         if (!W_ERROR_IS_OK(werr)) {
 320                 DEBUG( 0, ( "talloc() failure!\n" ) );
 321                 return False;
 322         }
 323         TALLOC_FREE(evtlogpath);
 324         evtlogpath = talloc_asprintf(ctx, "%s\\%s", KEY_EVENTLOG, eventlog );
 325         if (!evtlogpath) {
 326                 TALLOC_FREE(subkeys);
 327                 return false;
 328         }
 329
 330         regdb_fetch_keys( evtlogpath, subkeys );
 331
 332         if ( !regsubkey_ctr_key_exists( subkeys, sourcename ) ) {
 333                 DEBUG( 5,
 334                        ( " Source name [%s] for eventlog [%s] didn't exist, adding \n",
 335                          sourcename, eventlog ) );
 336                 regsubkey_ctr_addkey( subkeys, sourcename );
 337                 if ( !regdb_store_keys( evtlogpath, subkeys ) )
 338                         return False;
 339         }
 340         TALLOC_FREE(subkeys);
 341
 342         /* at this point KEY_EVENTLOG/<eventlog>/<sourcename> key is in there. Now need to add EventMessageFile */
 343
 344         /* now allocate room for the source's subkeys */
 345
 346         werr = regsubkey_ctr_init(ctx, &subkeys);
 347         if (!W_ERROR_IS_OK(werr)) {
 348                 DEBUG( 0, ( "talloc() failure!\n" ) );
 349                 return False;
 350         }
 351         TALLOC_FREE(evtlogpath);
 352         evtlogpath = talloc_asprintf(ctx, "%s\\%s\\%s",
 353                   KEY_EVENTLOG, eventlog, sourcename);
 354         if (!evtlogpath) {
 355                 TALLOC_FREE(subkeys);
 356                 return false;
 357         }
 358
 359         regdb_fetch_keys( evtlogpath, subkeys );
 360
 361         /* now add the values to the KEY_EVENTLOG/Application form key */
 362         if ( !( values = TALLOC_ZERO_P(ctx, struct regval_ctr ) ) ) {
 363                 DEBUG( 0, ( "talloc() failure!\n" ) );
 364                 return False;
 365         }
 366         DEBUG( 5,
 367                ( "Storing EventMessageFile [%s] to eventlog path of [%s]\n",
 368                  messagefile, evtlogpath ) );
 369
 370         regdb_fetch_values( evtlogpath, values );
 371
 372         regval_ctr_addvalue_sz(values, "EventMessageFile", messagefile);
 373         regdb_store_values( evtlogpath, values );
 374
 375         TALLOC_FREE(values);
 376
 377         return True;
 378 }