source3/utils/eventlogadm.c

   1
   2 /*
   3  * Samba Unix/Linux SMB client utility
   4  * Write Eventlog records to a tdb, perform other eventlog related functions
   5  *
   6  *
   7  * Copyright (C) Brian Moran                2005.
   8  * Copyright (C) Guenther Deschner          2009.
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 3 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  22  */
  23
  24
  25 #include "includes.h"
  26 #include "lib/eventlog/eventlog.h"
  27 #include "registry.h"
  28 #include "registry/reg_api.h"
  29 #include "registry/reg_init_basic.h"
  30 #include "registry/reg_util_token.h"
  31 #include "registry/reg_backend_db.h"
  32 #include "../libcli/registry/util_reg.h"
  33 #include "cmdline_contexts.h"
  34
  35 extern int optind;
  36 extern char *optarg;
  37
  38 int opt_debug = 0;
  39
  40 static void usage( char *s )
  41 {
  42         printf( "\nUsage: %s [OPTION]\n\n", s );
  43         printf( " -o write <Eventlog Name> \t\t\t\t\tWrites records to eventlog from STDIN\n" );
  44         printf( " -o addsource <EventlogName> <sourcename> <msgfileDLLname> \tAdds the specified source & DLL eventlog registry entry\n" );
  45         printf( " -o dump <Eventlog Name> <starting_record>\t\t\t\t\tDump stored eventlog entries on STDOUT\n" );
  46         printf( "\nMiscellaneous options:\n" );
  47         printf( " -s <filename>\t\t\t\t\t\t\tUse configuration file <filename>.\n");
  48         printf( " -d\t\t\t\t\t\t\t\tturn debug on\n" );
  49         printf( " -h\t\t\t\t\t\t\t\tdisplay help\n\n" );
  50 }
  51
  52 static void display_eventlog_names( void )
  53 {
  54         const char **elogs;
  55         int i;
  56
  57         elogs = lp_eventlog_list(  );
  58         printf( "Active eventlog names:\n" );
  59         printf( "--------------------------------------\n" );
  60         if ( elogs ) {
  61                 for ( i = 0; elogs[i]; i++ ) {
  62                         printf( "\t%s\n", elogs[i] );
  63                 }
  64         }
  65         else
  66                 printf( "\t<None specified>\n");
  67 }
  68
  69 /*********************************************************************
  70  for an eventlog, add in a source name. If the eventlog doesn't
  71  exist (not in the list) do nothing.   If a source for the log
  72  already exists, change the information (remove, replace)
  73 *********************************************************************/
  74 static bool eventlog_add_source( const char *eventlog, const char *sourcename,
  75                                  const char *messagefile )
  76 {
  77         /* Find all of the eventlogs, add keys for each of them */
  78         /* need to add to the value KEY_EVENTLOG/<eventlog>/Sources string (Creating if necessary)
  79            need to add KEY of source to KEY_EVENTLOG/<eventlog>/<source> */
  80
  81         const char **elogs = lp_eventlog_list(  );
  82         const char **wrklist, **wp;
  83         char *evtlogpath = NULL;
  84         int ii = 0;
  85         bool already_in;
  86         int i;
  87         int numsources = 0;
  88         TALLOC_CTX *ctx = talloc_stackframe();
  89         WERROR werr;
  90         struct registry_key *key_hive, *key_eventlog, *key_source;
  91         struct security_token *token = NULL;
  92         const char *hive_name, *relpath;
  93         enum winreg_CreateAction action;
  94         struct registry_value *value;
  95         static const uint32_t ACCESS = REG_KEY_READ | REG_KEY_WRITE;
  96         bool ret = false;
  97
  98         if (!elogs) {
  99                 d_printf("No Eventlogs configured\n");
 100                 goto done;
 101         }
 102
 103         for ( i = 0; elogs[i]; i++ ) {
 104                 if ( strequal( elogs[i], eventlog ) )
 105                         break;
 106         }
 107
 108         if ( !elogs[i] ) {
 109                 d_printf("Eventlog [%s] not found in list of valid event logs\n",
 110                          eventlog);
 111                 goto done;
 112         }
 113
 114         /* have to assume that the evenlog key itself exists at this point */
 115         /* add in a key of [sourcename] under the eventlog key */
 116
 117         /* todo add to Sources */
 118
 119         evtlogpath = talloc_asprintf(ctx, "%s\\%s", KEY_EVENTLOG, eventlog);
 120         if (!evtlogpath) {
 121                 d_printf("Out of memory\n");
 122                 goto done;
 123         }
 124
 125         relpath = evtlogpath + sizeof(KEY_EVENTLOG);
 126         hive_name = talloc_strndup(ctx, evtlogpath, relpath - evtlogpath);
 127         if (!hive_name) {
 128                 d_printf("Out of memory\n");
 129                 goto done;
 130         }
 131         relpath++;
 132
 133         werr = ntstatus_to_werror(registry_create_admin_token(ctx, &token));
 134         if (!W_ERROR_IS_OK(werr)) {
 135                 d_printf("Failed to create admin token: %s\n", win_errstr(werr));
 136                 goto done;
 137         }
 138
 139         werr = reg_openhive(ctx, hive_name, ACCESS, token, &key_hive);
 140         if (!W_ERROR_IS_OK(werr)) {
 141                 d_printf("Failed to open hive [%s]: %s\n", hive_name, win_errstr(werr));
 142                 goto done;
 143         }
 144
 145         werr = reg_openkey(ctx, key_hive, relpath, ACCESS, &key_eventlog);
 146         if (!W_ERROR_IS_OK(werr)) {
 147                 d_printf("Failed to open key [%s]: %s\n", evtlogpath, win_errstr(werr));
 148                 goto done;
 149         }
 150
 151         werr = reg_queryvalue(ctx, key_eventlog, "Sources", &value);
 152         if (!W_ERROR_IS_OK(werr)) {
 153                 d_printf("Failed to get value \"Sources\" for [%s]: %s\n", evtlogpath, win_errstr(werr));
 154                 goto done;
 155         }
 156         /* perhaps this adding a new string to a multi_sz should be a fn? */
 157         /* check to see if it's there already */
 158
 159         if ( value->type != REG_MULTI_SZ ) {
 160                 d_printf("Wrong type for \"Sources\", should be REG_MULTI_SZ\n");
 161                 goto done;
 162         }
 163         /* convert to a 'regulah' chars to do some comparisons */
 164
 165         already_in = false;
 166         wrklist = NULL;
 167         dump_data(1, value->data.data, value->data.length);
 168
 169         if (!pull_reg_multi_sz(ctx, &value->data, &wrklist)) {
 170                 d_printf("Failed to pull REG_MULTI_SZ from \"Sources\"\n");
 171                 goto done;
 172         }
 173
 174         for (ii=0; wrklist[ii]; ii++) {
 175                 numsources++;
 176         }
 177
 178         if (numsources > 0) {
 179                 /* see if it's in there already */
 180                 wp = wrklist;
 181
 182                 while (wp && *wp ) {
 183                         if ( strequal( *wp, sourcename ) ) {
 184                                 d_printf("Source name [%s] already in list for [%s] \n",
 185                                          sourcename, eventlog);
 186                                 already_in = true;
 187                                 break;
 188                         }
 189                         wp++;
 190                 }
 191         } else {
 192                 d_printf("Nothing in the sources list, this might be a problem\n");
 193         }
 194
 195         if ( !already_in ) {
 196                 /* make a new list with an additional entry; copy values, add another */
 197                 wp = talloc_realloc(ctx, wrklist, const char *, numsources + 2 );
 198                 if ( !wp ) {
 199                         d_printf("Out of memory\n");
 200                         goto done;
 201                 }
 202
 203                 wp[numsources] = sourcename;
 204                 wp[numsources+1] = NULL;
 205                 if (!push_reg_multi_sz(ctx, &value->data, wp)) {
 206                         d_printf("Failed to push Sources\n");
 207                         goto done;
 208                 }
 209                 dump_data( 1, value->data.data, value->data.length);
 210                 werr = reg_setvalue(key_eventlog,  "Sources", value);
 211                 if (!W_ERROR_IS_OK(werr)) {
 212                         d_printf("Failed to set value Sources:  %s\n", win_errstr(werr));
 213                         goto done;
 214                 }
 215         } else {
 216                 d_printf("Source name [%s] found in existing list of sources\n",
 217                          sourcename);
 218         }
 219
 220         werr = reg_createkey(ctx, key_eventlog, sourcename, ACCESS, &key_source, &action);
 221         if (!W_ERROR_IS_OK(werr)) {
 222                 d_printf("Failed to create subkey \"%s\" of \"%s\": %s\n", sourcename, evtlogpath, win_errstr(werr));
 223                 goto done;
 224         }
 225
 226         if (action == REG_CREATED_NEW_KEY) {
 227                 d_printf(" Source name [%s] for eventlog [%s] didn't exist, adding \n",
 228                          sourcename, eventlog);
 229         }
 230
 231         /* at this point KEY_EVENTLOG/<eventlog>/<sourcename> key is in there. Now need to add EventMessageFile */
 232
 233         /* now add the values to the KEY_EVENTLOG/Application form key */
 234         d_printf("Storing EventMessageFile [%s] to eventlog path of [%s]\n",
 235                  messagefile, evtlogpath);
 236
 237         if (!push_reg_sz(ctx, &value->data, messagefile)) {
 238                 d_printf("Failed to push \"EventMessageFile\"\n");
 239                 goto done;
 240         }
 241         value->type = REG_SZ;
 242
 243         werr = reg_setvalue(key_source, "EventMessageFile", value);
 244         if (!W_ERROR_IS_OK(werr)) {
 245                 d_printf("Failed to set value \"EventMessageFile\":  %s\n", win_errstr(werr));
 246                 return false;
 247         }
 248         ret = true;
 249 done:
 250         talloc_free(ctx);
 251         return ret;
 252 }
 253
 254 static int DoAddSourceCommand( int argc, char **argv, bool debugflag, char *exename )
 255 {
 256         WERROR werr;
 257
 258         if ( argc < 3 ) {
 259                 printf( "need more arguments:\n" );
 260                 printf( "-o addsource EventlogName SourceName /path/to/EventMessageFile.dll\n" );
 261                 return -1;
 262         }
 263
 264         /* must open the registry before we access it */
 265         werr = registry_init_common();
 266         if (!W_ERROR_IS_OK(werr)) {
 267                 printf("Can't open the registry: %s.\n", win_errstr(werr));
 268                 return -1;
 269         }
 270         werr = regdb_transaction_start();
 271         if (!W_ERROR_IS_OK(werr)) {
 272                 printf("Can't start transaction on registry: %s.\n", win_errstr(werr));
 273                 return -1;
 274         }
 275
 276         if ( !eventlog_add_source( argv[0], argv[1], argv[2] ) ) {
 277                 regdb_transaction_cancel();
 278                 return -2;
 279         }
 280         werr = regdb_transaction_commit();
 281         if (!W_ERROR_IS_OK(werr)) {
 282                 printf("Failed to commit transaction on registry: %s.\n", win_errstr(werr));
 283                 return -1;
 284         }
 285         return 0;
 286 }
 287
 288 static int DoWriteCommand( int argc, char **argv, bool debugflag, char *exename )
 289 {
 290         FILE *f1;
 291         char *argfname;
 292         ELOG_TDB *etdb;
 293         NTSTATUS status;
 294
 295         /* fixed constants are bad bad bad  */
 296         char linein[1024];
 297         bool is_eor;
 298         struct eventlog_Record_tdb ee;
 299         uint32_t record_number = 0;
 300         TALLOC_CTX *mem_ctx = talloc_tos();
 301
 302         f1 = stdin;
 303         if ( !f1 ) {
 304                 printf( "Can't open STDIN\n" );
 305                 return -1;
 306         }
 307
 308         if ( debugflag ) {
 309                 printf( "Starting write for eventlog [%s]\n", argv[0] );
 310                 display_eventlog_names(  );
 311         }
 312
 313         argfname = argv[0];
 314
 315         if ( !( etdb = elog_open_tdb( argfname, False, False ) ) ) {
 316                 printf( "can't open the eventlog TDB (%s)\n", argfname );
 317                 return -1;
 318         }
 319
 320         ZERO_STRUCT( ee );      /* MUST initialize between records */
 321
 322         while ( !feof( f1 ) ) {
 323                 if (fgets( linein, sizeof( linein ) - 1, f1 ) == NULL) {
 324                         break;
 325                 }
 326                 if ((strlen(linein) > 0)
 327                     && (linein[strlen(linein)-1] == '\n')) {
 328                         linein[strlen(linein)-1] = 0;
 329                 }
 330
 331                 if ( debugflag )
 332                         printf( "Read line [%s]\n", linein );
 333
 334                 is_eor = False;
 335
 336
 337                 parse_logentry( mem_ctx, ( char * ) &linein, &ee, &is_eor );
 338                 /* should we do something with the return code? */
 339
 340                 if ( is_eor ) {
 341                         fixup_eventlog_record_tdb( &ee );
 342
 343                         if ( opt_debug )
 344                                 printf( "record number [%d], tg [%d] , tw [%d]\n",
 345                                         ee.record_number, (int)ee.time_generated, (int)ee.time_written );
 346
 347                         if ( ee.time_generated != 0 ) {
 348
 349                                 /* printf("Writing to the event log\n"); */
 350
 351                                 status = evlog_push_record_tdb( mem_ctx, ELOG_TDB_CTX(etdb),
 352                                                                 &ee, &record_number );
 353                                 if ( !NT_STATUS_IS_OK(status) ) {
 354                                         printf( "Can't write to the event log: %s\n",
 355                                                 nt_errstr(status) );
 356                                 } else {
 357                                         if ( opt_debug )
 358                                                 printf( "Wrote record %d\n",
 359                                                         record_number );
 360                                 }
 361                         } else {
 362                                 if ( opt_debug )
 363                                         printf( "<null record>\n" );
 364                         }
 365                         ZERO_STRUCT( ee );      /* MUST initialize between records */
 366                 }
 367         }
 368
 369         elog_close_tdb( etdb , False );
 370
 371         return 0;
 372 }
 373
 374 static int DoDumpCommand(int argc, char **argv, bool debugflag, char *exename)
 375 {
 376         ELOG_TDB *etdb;
 377         TALLOC_CTX *mem_ctx = talloc_tos();
 378         uint32_t count = 1;
 379
 380         if (argc > 2) {
 381                 return -1;
 382         }
 383
 384         if (argc > 1) {
 385                 count = atoi(argv[1]);
 386         }
 387
 388         etdb = elog_open_tdb(argv[0], false, true);
 389         if (!etdb) {
 390                 printf("can't open the eventlog TDB (%s)\n", argv[0]);
 391                 return -1;
 392         }
 393
 394         while (1) {
 395
 396                 struct eventlog_Record_tdb *r;
 397                 char *s;
 398
 399                 r = evlog_pull_record_tdb(mem_ctx, etdb->tdb, count);
 400                 if (!r) {
 401                         break;
 402                 }
 403
 404                 printf("displaying record: %d\n", count);
 405
 406                 s = NDR_PRINT_STRUCT_STRING(mem_ctx, eventlog_Record_tdb, r);
 407                 if (s) {
 408                         printf("%s\n", s);
 409                         talloc_free(s);
 410                 }
 411                 count++;
 412         }
 413
 414         elog_close_tdb(etdb, false);
 415
 416         return 0;
 417 }
 418
 419 /* would be nice to use the popT stuff here, however doing so forces us to drag in a lot of other infrastructure */
 420
 421 int main( int argc, char *argv[] )
 422 {
 423         int opt, rc;
 424         char *exename;
 425         char *configfile = NULL;
 426         TALLOC_CTX *frame = talloc_stackframe();
 427
 428
 429         fstring opname;
 430
 431         smb_init_locale();
 432
 433         opt_debug = 0;          /* todo set this from getopts */
 434
 435         exename = argv[0];
 436
 437         /* default */
 438
 439         fstrcpy( opname, "write" );     /* the default */
 440
 441 #if 0                           /* TESTING CODE */
 442         eventlog_add_source( "System", "TestSourceX", "SomeTestPathX" );
 443 #endif
 444         while ( ( opt = getopt( argc, argv, "dho:s:" ) ) != EOF ) {
 445                 switch ( opt ) {
 446
 447                 case 'o':
 448                         fstrcpy( opname, optarg );
 449                         break;
 450
 451                 case 'h':
 452                         usage( exename );
 453                         display_eventlog_names(  );
 454                         exit( 0 );
 455                         break;
 456
 457                 case 'd':
 458                         opt_debug = 1;
 459                         break;
 460                 case 's':
 461                         configfile = talloc_strdup(frame, optarg);
 462                         break;
 463
 464                 }
 465         }
 466
 467         argc -= optind;
 468         argv += optind;
 469
 470         if ( argc < 1 ) {
 471                 printf( "\nNot enough arguments!\n" );
 472                 usage( exename );
 473                 exit( 1 );
 474         }
 475
 476         cmdline_messaging_context(configfile == NULL ?
 477                                   get_dyn_CONFIGFILE() : configfile);
 478
 479         if ( configfile == NULL ) {
 480                 lp_load_global(get_dyn_CONFIGFILE());
 481         } else if (!lp_load_global(configfile)) {
 482                 printf("Unable to parse configfile '%s'\n",configfile);
 483                 exit( 1 );
 484         }
 485
 486         /*  note that the separate command types should call usage if they need to... */
 487         while ( 1 ) {
 488                 if ( !strcasecmp_m( opname, "addsource" ) ) {
 489                         rc = DoAddSourceCommand( argc, argv, opt_debug,
 490                                                  exename );
 491                         break;
 492                 }
 493                 if ( !strcasecmp_m( opname, "write" ) ) {
 494                         rc = DoWriteCommand( argc, argv, opt_debug, exename );
 495                         break;
 496                 }
 497                 if ( !strcasecmp_m( opname, "dump" ) ) {
 498                         rc = DoDumpCommand( argc, argv, opt_debug, exename );
 499                         break;
 500                 }
 501                 printf( "unknown command [%s]\n", opname );
 502                 usage( exename );
 503                 exit( 1 );
 504                 break;
 505         }
 506         TALLOC_FREE(frame);
 507         return rc;
 508 }