source3/utils/net_groupmap.c

   1 /*
   2  *  Unix SMB/CIFS implementation.
   3  *  RPC Pipe client / server routines
   4  *  Copyright (C) Andrew Tridgell              1992-2000,
   5  *  Copyright (C) Jean François Micouleau      1998-2001.
   6  *  Copyright (C) Gerald Carter                2003.
   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
  24 #include "includes.h"
  25 #include "../utils/net.h"
  26
  27
  28 /*********************************************************
  29  utility function to parse an integer parameter from
  30  "parameter = value"
  31 **********************************************************/
  32 static uint32 get_int_param( const char* param )
  33 {
  34         char *p;
  35
  36         p = strchr( param, '=' );
  37         if ( !p )
  38                 return 0;
  39
  40         return atoi(p+1);
  41 }
  42
  43 /*********************************************************
  44  utility function to parse an integer parameter from
  45  "parameter = value"
  46 **********************************************************/
  47 static char* get_string_param( const char* param )
  48 {
  49         char *p;
  50
  51         p = strchr( param, '=' );
  52         if ( !p )
  53                 return NULL;
  54
  55         return (p+1);
  56 }
  57
  58 /*********************************************************
  59  Figure out if the input was an NT group or a SID string.
  60  Return the SID.
  61 **********************************************************/
  62 static BOOL get_sid_from_input(DOM_SID *sid, char *input)
  63 {
  64         GROUP_MAP map;
  65
  66         if (StrnCaseCmp( input, "S-", 2)) {
  67                 /* Perhaps its the NT group name? */
  68                 if (!pdb_getgrnam(&map, input)) {
  69                         printf("NT Group %s doesn't exist in mapping DB\n", input);
  70                         return False;
  71                 } else {
  72                         *sid = map.sid;
  73                 }
  74         } else {
  75                 if (!string_to_sid(sid, input)) {
  76                         printf("converting sid %s from a string failed!\n", input);
  77                         return False;
  78                 }
  79         }
  80         return True;
  81 }
  82
  83 /*********************************************************
  84  Dump a GROUP_MAP entry to stdout (long or short listing)
  85 **********************************************************/
  86
  87 static void print_map_entry ( GROUP_MAP map, BOOL long_list )
  88 {
  89         fstring string_sid;
  90         fstring group_type;
  91
  92         decode_sid_name_use(group_type, map.sid_name_use);
  93         sid_to_string(string_sid, &map.sid);
  94
  95         if (!long_list)
  96                 d_printf("%s (%s) -> %s\n", map.nt_name, string_sid, gidtoname(map.gid));
  97         else {
  98                 d_printf("%s\n", map.nt_name);
  99                 d_printf("\tSID       : %s\n", string_sid);
 100                 d_printf("\tUnix group: %s\n", gidtoname(map.gid));
 101                 d_printf("\tGroup type: %s\n", group_type);
 102                 d_printf("\tComment   : %s\n", map.comment);
 103         }
 104
 105 }
 106 /*********************************************************
 107  List the groups.
 108 **********************************************************/
 109 static int net_groupmap_list(int argc, const char **argv)
 110 {
 111         int entries;
 112         BOOL long_list = False;
 113         int i;
 114         fstring ntgroup = "";
 115         fstring sid_string = "";
 116
 117         /* get the options */
 118         for ( i=0; i<argc; i++ ) {
 119                 if ( !StrCaseCmp(argv[i], "verbose")) {
 120                         long_list = True;
 121                 }
 122                 else if ( !StrnCaseCmp(argv[i], "ntgroup", strlen("ntgroup")) ) {
 123                         fstrcpy( ntgroup, get_string_param( argv[i] ) );
 124                         if ( !ntgroup[0] ) {
 125                                 d_printf("must supply a name\n");
 126                                 return -1;
 127                         }
 128                 }
 129                 else if ( !StrnCaseCmp(argv[i], "sid", strlen("sid")) ) {
 130                         fstrcpy( sid_string, get_string_param( argv[i] ) );
 131                         if ( !sid_string[0] ) {
 132                                 d_printf("must supply a SID\n");
 133                                 return -1;
 134                         }
 135                 }
 136                 else {
 137                         d_printf("Bad option: %s\n", argv[i]);
 138                         return -1;
 139                 }
 140         }
 141
 142         /* list a single group is given a name */
 143         if ( ntgroup[0] || sid_string[0] ) {
 144                 DOM_SID sid;
 145                 GROUP_MAP map;
 146
 147                 if ( sid_string[0] )
 148                         fstrcpy( ntgroup, sid_string);
 149
 150                 if (!get_sid_from_input(&sid, ntgroup)) {
 151                         return -1;
 152                 }
 153
 154                 /* Get the current mapping from the database */
 155                 if(!pdb_getgrsid(&map, sid)) {
 156                         d_printf("Failure to local group SID in the database\n");
 157                         return -1;
 158                 }
 159
 160                 print_map_entry( map, long_list );
 161         }
 162         else {
 163                 GROUP_MAP *map=NULL;
 164                 /* enumerate all group mappings */
 165                 if (!pdb_enum_group_mapping(SID_NAME_UNKNOWN, &map, &entries, ENUM_ALL_MAPPED))
 166                         return -1;
 167
 168                 for (i=0; i<entries; i++) {
 169                         print_map_entry( map[i], long_list );
 170                 }
 171
 172                 SAFE_FREE(map);
 173         }
 174
 175         return 0;
 176 }
 177
 178 /*********************************************************
 179  Add a new group mapping entry
 180 **********************************************************/
 181
 182 static int net_groupmap_add(int argc, const char **argv)
 183 {
 184         DOM_SID sid;
 185         fstring ntgroup = "";
 186         fstring unixgrp = "";
 187         fstring string_sid = "";
 188         fstring type = "";
 189         fstring ntcomment = "";
 190         enum SID_NAME_USE sid_type = SID_NAME_DOM_GRP;
 191         uint32 rid = 0;
 192         gid_t gid;
 193         int i;
 194
 195         /* get the options */
 196         for ( i=0; i<argc; i++ ) {
 197                 if ( !StrnCaseCmp(argv[i], "rid", strlen("rid")) ) {
 198                         rid = get_int_param(argv[i]);
 199                         if ( rid < DOMAIN_GROUP_RID_ADMINS ) {
 200                                 d_printf("RID must be greater than %d\n", (uint32)DOMAIN_GROUP_RID_ADMINS-1);
 201                                 return -1;
 202                         }
 203                 }
 204                 else if ( !StrnCaseCmp(argv[i], "unixgroup", strlen("unixgroup")) ) {
 205                         fstrcpy( unixgrp, get_string_param( argv[i] ) );
 206                         if ( !unixgrp[0] ) {
 207                                 d_printf("must supply a name\n");
 208                                 return -1;
 209                         }
 210                 }
 211                 else if ( !StrnCaseCmp(argv[i], "ntgroup", strlen("ntgroup")) ) {
 212                         fstrcpy( ntgroup, get_string_param( argv[i] ) );
 213                         if ( !ntgroup[0] ) {
 214                                 d_printf("must supply a name\n");
 215                                 return -1;
 216                         }
 217                 }
 218                 else if ( !StrnCaseCmp(argv[i], "sid", strlen("sid")) ) {
 219                         fstrcpy( string_sid, get_string_param( argv[i] ) );
 220                         if ( !string_sid[0] ) {
 221                                 d_printf("must supply a SID\n");
 222                                 return -1;
 223                         }
 224                 }
 225                 else if ( !StrnCaseCmp(argv[i], "comment", strlen("comment")) ) {
 226                         fstrcpy( ntcomment, get_string_param( argv[i] ) );
 227                         if ( !ntcomment[0] ) {
 228                                 d_printf("must supply a comment string\n");
 229                                 return -1;
 230                         }
 231                 }
 232                 else if ( !StrnCaseCmp(argv[i], "type", strlen("type")) )  {
 233                         fstrcpy( type, get_string_param( argv[i] ) );
 234                         switch ( type[0] ) {
 235                                 case 'b':
 236                                 case 'B':
 237                                         sid_type = SID_NAME_WKN_GRP;
 238                                         break;
 239                                 case 'd':
 240                                 case 'D':
 241                                         sid_type = SID_NAME_DOM_GRP;
 242                                         break;
 243                                 case 'l':
 244                                 case 'L':
 245                                         sid_type = SID_NAME_ALIAS;
 246                                         break;
 247                         }
 248                 }
 249                 else {
 250                         d_printf("Bad option: %s\n", argv[i]);
 251                         return -1;
 252                 }
 253         }
 254
 255         if ( !unixgrp[0] ) {
 256                 d_printf("Usage: net groupmap add {rid=<int>|sid=<string>} unixgroup=<string> [type=<domain|local|builtin>] [ntgroup=<string>] [comment=<string>]\n");
 257                 return -1;
 258         }
 259
 260         if ( (gid = nametogid(unixgrp)) == (gid_t)-1 ) {
 261                 d_printf("Can't lookup UNIX group %s\n", unixgrp);
 262                 return -1;
 263         }
 264
 265         if ( (rid == 0) && (string_sid[0] == '\0') ) {
 266                 d_printf("No rid or sid specified, choosing algorithmic mapping\n");
 267                 rid = pdb_gid_to_group_rid(gid);
 268         }
 269
 270         /* append the rid to our own domain/machine SID if we don't have a full SID */
 271         if ( !string_sid[0] ) {
 272                 sid_copy(&sid, get_global_sam_sid());
 273                 sid_append_rid(&sid, rid);
 274                 sid_to_string(string_sid, &sid);
 275         }
 276
 277         if (!ntcomment[0])
 278                 fstrcpy(ntcomment, "Local Unix group");
 279
 280         if (!ntgroup[0] )
 281                 fstrcpy( ntgroup, unixgrp );
 282
 283
 284         if (!add_initial_entry(gid, string_sid, sid_type, ntgroup, ntcomment)) {
 285                 d_printf("adding entry for group %s failed!\n", ntgroup);
 286                 return -1;
 287         }
 288
 289         d_printf("Successully added group %s to the mapping db\n", ntgroup);
 290         return 0;
 291 }
 292
 293 static int net_groupmap_modify(int argc, const char **argv)
 294 {
 295         DOM_SID sid;
 296         GROUP_MAP map;
 297         fstring ntcomment = "";
 298         fstring type = "";
 299         fstring ntgroup = "";
 300         fstring unixgrp = "";
 301         fstring sid_string = "";
 302         enum SID_NAME_USE sid_type = SID_NAME_UNKNOWN;
 303         int i;
 304         gid_t gid;
 305
 306         /* get the options */
 307         for ( i=0; i<argc; i++ ) {
 308                 if ( !StrnCaseCmp(argv[i], "ntgroup", strlen("ntgroup")) ) {
 309                         fstrcpy( ntgroup, get_string_param( argv[i] ) );
 310                         if ( !ntgroup[0] ) {
 311                                 d_printf("must supply a name\n");
 312                                 return -1;
 313                         }
 314                 }
 315                 else if ( !StrnCaseCmp(argv[i], "sid", strlen("sid")) ) {
 316                         fstrcpy( sid_string, get_string_param( argv[i] ) );
 317                         if ( !sid_string[0] ) {
 318                                 d_printf("must supply a name\n");
 319                                 return -1;
 320                         }
 321                 }
 322                 else if ( !StrnCaseCmp(argv[i], "comment", strlen("comment")) ) {
 323                         fstrcpy( ntcomment, get_string_param( argv[i] ) );
 324                         if ( !ntcomment[0] ) {
 325                                 d_printf("must supply a comment string\n");
 326                                 return -1;
 327                         }
 328                 }
 329                 else if ( !StrnCaseCmp(argv[i], "unixgroup", strlen("unixgroup")) ) {
 330                         fstrcpy( unixgrp, get_string_param( argv[i] ) );
 331                         if ( !unixgrp[0] ) {
 332                                 d_printf("must supply a group name\n");
 333                                 return -1;
 334                         }
 335                 }
 336                 else if ( !StrnCaseCmp(argv[i], "type", strlen("type")) )  {
 337                         fstrcpy( type, get_string_param( argv[i] ) );
 338                         switch ( type[0] ) {
 339                                 case 'd':
 340                                 case 'D':
 341                                         sid_type = SID_NAME_DOM_GRP;
 342                                         break;
 343                                 case 'l':
 344                                 case 'L':
 345                                         sid_type = SID_NAME_ALIAS;
 346                                         break;
 347                         }
 348                 }
 349                 else {
 350                         d_printf("Bad option: %s\n", argv[i]);
 351                         return -1;
 352                 }
 353         }
 354
 355         if ( !ntgroup[0] && !sid_string[0] ) {
 356                 d_printf("Usage: net groupmap modify {ntgroup=<string>|sid=<SID>} [comment=<string>] [unixgroup=<string>] [type=<domain|local>]\n");
 357                 return -1;
 358         }
 359
 360         /* give preference to the SID; if both the ntgroup name and SID
 361            are defined, use the SID and assume that the group name could be a
 362            new name */
 363
 364         if ( sid_string[0] ) {
 365                 if (!get_sid_from_input(&sid, sid_string)) {
 366                         return -1;
 367                 }
 368         }
 369         else {
 370                 if (!get_sid_from_input(&sid, ntgroup)) {
 371                         return -1;
 372                 }
 373         }
 374
 375         /* Get the current mapping from the database */
 376         if(!pdb_getgrsid(&map, sid)) {
 377                 d_printf("Failure to local group SID in the database\n");
 378                 return -1;
 379         }
 380
 381         /*
 382          * Allow changing of group type only between domain and local
 383          * We disallow changing Builtin groups !!! (SID problem)
 384          */
 385         if (sid_type != SID_NAME_UNKNOWN) {
 386                 if (map.sid_name_use == SID_NAME_WKN_GRP) {
 387                         d_printf("You can only change between domain and local groups.\n");
 388                         return -1;
 389                 }
 390
 391                 map.sid_name_use=sid_type;
 392         }
 393
 394         /* Change comment if new one */
 395         if ( ntcomment[0] )
 396                 fstrcpy( map.comment, ntcomment );
 397
 398         if ( ntgroup[0] )
 399                 fstrcpy( map.nt_name, ntgroup );
 400
 401         if ( unixgrp[0] ) {
 402                 gid = nametogid( unixgrp );
 403                 if ( gid == -1 ) {
 404                         d_printf("Unable to lookup UNIX group %s.  Make sure the group exists.\n",
 405                                 unixgrp);
 406                         return -1;
 407                 }
 408
 409                 map.gid = gid;
 410         }
 411
 412         if ( !pdb_update_group_mapping_entry(&map) ) {
 413                 d_printf("Could not update group database\n");
 414                 return -1;
 415         }
 416
 417         d_printf("Updated mapping entry for %s\n", map.nt_name);
 418
 419         return 0;
 420 }
 421
 422 static int net_groupmap_delete(int argc, const char **argv)
 423 {
 424         DOM_SID sid;
 425         fstring ntgroup = "";
 426         fstring sid_string = "";
 427         int i;
 428
 429         /* get the options */
 430         for ( i=0; i<argc; i++ ) {
 431                 if ( !StrnCaseCmp(argv[i], "ntgroup", strlen("ntgroup")) ) {
 432                         fstrcpy( ntgroup, get_string_param( argv[i] ) );
 433                         if ( !ntgroup[0] ) {
 434                                 d_printf("must supply a name\n");
 435                                 return -1;
 436                         }
 437                 }
 438                 else if ( !StrnCaseCmp(argv[i], "sid", strlen("sid")) ) {
 439                         fstrcpy( sid_string, get_string_param( argv[i] ) );
 440                         if ( !sid_string[0] ) {
 441                                 d_printf("must supply a SID\n");
 442                                 return -1;
 443                         }
 444                 }
 445                 else {
 446                         d_printf("Bad option: %s\n", argv[i]);
 447                         return -1;
 448                 }
 449         }
 450
 451         if ( !ntgroup[0] && !sid_string[0]) {
 452                 d_printf("Usage: net groupmap delete {ntgroup=<string>|sid=<SID>}\n");
 453                 return -1;
 454         }
 455
 456         /* give preference to the SID if we have that */
 457
 458         if ( sid_string[0] )
 459                 fstrcpy( ntgroup, sid_string );
 460
 461         if ( !get_sid_from_input(&sid, ntgroup) ) {
 462                 d_printf("Unable to resolve group %s to a SID\n", ntgroup);
 463                 return -1;
 464         }
 465
 466         if ( !pdb_delete_group_mapping_entry(sid) ) {
 467                 printf("Failed to removing group %s from the mapping db!\n", ntgroup);
 468                 return -1;
 469         }
 470
 471         d_printf("Sucessfully removed %s from the mapping db\n", ntgroup);
 472
 473         return 0;
 474 }
 475
 476 static int net_groupmap_set(int argc, const char **argv)
 477 {
 478         const char *ntgroup = NULL;
 479         struct group *grp = NULL;
 480         GROUP_MAP map;
 481         BOOL have_map = False;
 482
 483         if ((argc < 1) || (argc > 2)) {
 484                 d_printf("Usage: net groupmap set \"NT Group\" "
 485                          "[\"unix group\"] [-C \"comment\"] [-L] [-D]\n");
 486                 return -1;
 487         }
 488
 489         if ( opt_localgroup && opt_domaingroup ) {
 490                 d_printf("Can only specify -L or -D, not both\n");
 491                 return -1;
 492         }
 493
 494         ntgroup = argv[0];
 495
 496         if (argc == 2) {
 497                 grp = getgrnam(argv[1]);
 498
 499                 if (grp == NULL) {
 500                         d_printf("Could not find unix group %s\n", argv[1]);
 501                         return -1;
 502                 }
 503         }
 504
 505         have_map = pdb_getgrnam(&map, ntgroup);
 506
 507         if (!have_map) {
 508                 DOM_SID sid;
 509                 have_map = ( (strncmp(ntgroup, "S-", 2) == 0) &&
 510                              string_to_sid(&sid, ntgroup) &&
 511                              pdb_getgrsid(&map, sid) );
 512         }
 513
 514         if (!have_map) {
 515
 516                 /* Ok, add it */
 517
 518                 if (grp == NULL) {
 519                         d_printf("Could not find group mapping for %s\n",
 520                                  ntgroup);
 521                         return -1;
 522                 }
 523
 524                 map.gid = grp->gr_gid;
 525
 526                 if (opt_rid == 0) {
 527                         opt_rid = pdb_gid_to_group_rid(map.gid);
 528                 }
 529
 530                 sid_copy(&map.sid, get_global_sam_sid());
 531                 sid_append_rid(&map.sid, opt_rid);
 532
 533                 map.sid_name_use = SID_NAME_DOM_GRP;
 534                 fstrcpy(map.nt_name, ntgroup);
 535                 fstrcpy(map.comment, "");
 536
 537                 if (!pdb_add_group_mapping_entry(&map)) {
 538                         d_printf("Could not add mapping entry for %s\n",
 539                                  ntgroup);
 540                         return -1;
 541                 }
 542         }
 543
 544         /* Now we have a mapping entry, update that stuff */
 545
 546         if ( opt_localgroup || opt_domaingroup ) {
 547                 if (map.sid_name_use == SID_NAME_WKN_GRP) {
 548                         d_printf("Can't change type of the BUILTIN group %s\n",
 549                                  map.nt_name);
 550                         return -1;
 551                 }
 552         }
 553
 554         if (opt_localgroup)
 555                 map.sid_name_use = SID_NAME_ALIAS;
 556
 557         if (opt_domaingroup)
 558                 map.sid_name_use = SID_NAME_DOM_GRP;
 559
 560         /* The case (opt_domaingroup && opt_localgroup) was tested for above */
 561
 562         if (strlen(opt_comment) > 0)
 563                 fstrcpy(map.comment, opt_comment);
 564
 565         if (strlen(opt_newntname) > 0)
 566                 fstrcpy(map.nt_name, opt_newntname);
 567
 568         if (grp != NULL)
 569                 map.gid = grp->gr_gid;
 570
 571         if (!pdb_update_group_mapping_entry(&map)) {
 572                 d_printf("Could not update group mapping for %s\n", ntgroup);
 573                 return -1;
 574         }
 575
 576         return 0;
 577 }
 578
 579 static int net_groupmap_cleanup(int argc, const char **argv)
 580 {
 581         GROUP_MAP *map = NULL;
 582         int i, entries;
 583
 584         if (!pdb_enum_group_mapping(SID_NAME_UNKNOWN, &map, &entries,
 585                                     ENUM_ALL_MAPPED)) {
 586                 d_printf("Could not list group mappings\n");
 587                 return -1;
 588         }
 589
 590         for (i=0; i<entries; i++) {
 591
 592                 if (map[i].sid_name_use == SID_NAME_WKN_GRP)
 593                         continue;
 594
 595                 if (map[i].gid == -1)
 596                         printf("Group %s is not mapped\n", map[i].nt_name);
 597
 598                 if (!sid_check_is_in_our_domain(&map[i].sid)) {
 599                         printf("Deleting mapping for NT Group %s, sid %s\n",
 600                                map[i].nt_name,
 601                                sid_string_static(&map[i].sid));
 602                         pdb_delete_group_mapping_entry(map[i].sid);
 603                 }
 604         }
 605
 606         SAFE_FREE(map);
 607
 608         return 0;
 609 }
 610
 611 int net_help_groupmap(int argc, const char **argv)
 612 {
 613         d_printf("net groupmap add"\
 614                 "\n  Create a new group mapping\n");
 615         d_printf("net groupmap modify"\
 616                 "\n  Update a group mapping\n");
 617         d_printf("net groupmap delete"\
 618                 "\n  Remove a group mapping\n");
 619         d_printf("net groupmap list"\
 620                 "\n  List current group map\n");
 621         d_printf("net groupmap set"\
 622                 "\n  Set group mapping\n");
 623         d_printf("net groupmap cleanup"\
 624                 "\n  Remove foreign group mapping entries\n");
 625
 626         return -1;
 627 }
 628
 629
 630 /***********************************************************
 631  migrated functionality from smbgroupedit
 632  **********************************************************/
 633 int net_groupmap(int argc, const char **argv)
 634 {
 635         struct functable func[] = {
 636                 {"add", net_groupmap_add},
 637                 {"modify", net_groupmap_modify},
 638                 {"delete", net_groupmap_delete},
 639                 {"set", net_groupmap_set},
 640                 {"cleanup", net_groupmap_cleanup},
 641                 {"list", net_groupmap_list},
 642                 {"help", net_help_groupmap},
 643                 {NULL, NULL}
 644         };
 645
 646         /* we shouldn't have silly checks like this */
 647         if (getuid() != 0) {
 648                 d_printf("You must be root to edit group mappings.\nExiting...\n");
 649                 return -1;
 650         }
 651
 652         if ( argc )
 653                 return net_run_function(argc, argv, func, net_help_groupmap);
 654
 655         return net_help_groupmap( argc, argv );
 656 }
 657