source3/utils/smbcacls.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    ACL get/set utility
   4
   5    Copyright (C) Andrew Tridgell 2000
   6    Copyright (C) Tim Potter      2000
   7    Copyright (C) Jeremy Allison  2000
   8    Copyright (C) Jelmer Vernooij 2003
   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 #include "includes.h"
  25
  26 extern bool AllowDebugChange;
  27
  28 static int test_args;
  29
  30 #define CREATE_ACCESS_READ READ_CONTROL_ACCESS
  31
  32 /* numeric is set when the user wants numeric SIDs and ACEs rather
  33    than going via LSA calls to resolve them */
  34 static int numeric;
  35
  36 static int sddl;
  37
  38 enum acl_mode {SMB_ACL_SET, SMB_ACL_DELETE, SMB_ACL_MODIFY, SMB_ACL_ADD };
  39 enum chown_mode {REQUEST_NONE, REQUEST_CHOWN, REQUEST_CHGRP};
  40 enum exit_values {EXIT_OK, EXIT_FAILED, EXIT_PARSE_ERROR};
  41
  42 struct perm_value {
  43         const char *perm;
  44         uint32 mask;
  45 };
  46
  47 /* These values discovered by inspection */
  48
  49 static const struct perm_value special_values[] = {
  50         { "R", 0x00120089 },
  51         { "W", 0x00120116 },
  52         { "X", 0x001200a0 },
  53         { "D", 0x00010000 },
  54         { "P", 0x00040000 },
  55         { "O", 0x00080000 },
  56         { NULL, 0 },
  57 };
  58
  59 static const struct perm_value standard_values[] = {
  60         { "READ",   0x001200a9 },
  61         { "CHANGE", 0x001301bf },
  62         { "FULL",   0x001f01ff },
  63         { NULL, 0 },
  64 };
  65
  66 /* Open cli connection and policy handle */
  67
  68 static NTSTATUS cli_lsa_lookup_sid(struct cli_state *cli,
  69                                    const DOM_SID *sid,
  70                                    TALLOC_CTX *mem_ctx,
  71                                    enum lsa_SidType *type,
  72                                    char **domain, char **name)
  73 {
  74         uint16 orig_cnum = cli->cnum;
  75         struct rpc_pipe_client *p = NULL;
  76         struct policy_handle handle;
  77         NTSTATUS status;
  78         TALLOC_CTX *frame = talloc_stackframe();
  79         enum lsa_SidType *types;
  80         char **domains;
  81         char **names;
  82
  83         status = cli_tcon_andx(cli, "IPC$", "?????", "", 0);
  84         if (!NT_STATUS_IS_OK(status)) {
  85                 return status;
  86         }
  87
  88         status = cli_rpc_pipe_open_noauth(cli, &ndr_table_lsarpc.syntax_id,
  89                                           &p);
  90         if (!NT_STATUS_IS_OK(status)) {
  91                 goto fail;
  92         }
  93
  94         status = rpccli_lsa_open_policy(p, talloc_tos(), True,
  95                                         GENERIC_EXECUTE_ACCESS, &handle);
  96         if (!NT_STATUS_IS_OK(status)) {
  97                 goto fail;
  98         }
  99
 100         status = rpccli_lsa_lookup_sids(p, talloc_tos(), &handle, 1, sid,
 101                                         &domains, &names, &types);
 102         if (!NT_STATUS_IS_OK(status)) {
 103                 goto fail;
 104         }
 105
 106         *type = types[0];
 107         *domain = talloc_move(mem_ctx, &domains[0]);
 108         *name = talloc_move(mem_ctx, &names[0]);
 109
 110         status = NT_STATUS_OK;
 111  fail:
 112         TALLOC_FREE(p);
 113         cli_tdis(cli);
 114         cli->cnum = orig_cnum;
 115         TALLOC_FREE(frame);
 116         return status;
 117 }
 118
 119 static NTSTATUS cli_lsa_lookup_name(struct cli_state *cli,
 120                                     const char *name,
 121                                     enum lsa_SidType *type,
 122                                     DOM_SID *sid)
 123 {
 124         uint16 orig_cnum = cli->cnum;
 125         struct rpc_pipe_client *p;
 126         struct policy_handle handle;
 127         NTSTATUS status;
 128         TALLOC_CTX *frame = talloc_stackframe();
 129         DOM_SID *sids;
 130         enum lsa_SidType *types;
 131
 132         status = cli_tcon_andx(cli, "IPC$", "?????", "", 0);
 133         if (!NT_STATUS_IS_OK(status)) {
 134                 return status;
 135         }
 136
 137         status = cli_rpc_pipe_open_noauth(cli, &ndr_table_lsarpc.syntax_id,
 138                                           &p);
 139         if (!NT_STATUS_IS_OK(status)) {
 140                 goto fail;
 141         }
 142
 143         status = rpccli_lsa_open_policy(p, talloc_tos(), True,
 144                                         GENERIC_EXECUTE_ACCESS, &handle);
 145         if (!NT_STATUS_IS_OK(status)) {
 146                 goto fail;
 147         }
 148
 149         status = rpccli_lsa_lookup_names(p, talloc_tos(), &handle, 1, &name,
 150                                          NULL, 1, &sids, &types);
 151         if (!NT_STATUS_IS_OK(status)) {
 152                 goto fail;
 153         }
 154
 155         *type = types[0];
 156         *sid = sids[0];
 157
 158         status = NT_STATUS_OK;
 159  fail:
 160         TALLOC_FREE(p);
 161         cli_tdis(cli);
 162         cli->cnum = orig_cnum;
 163         TALLOC_FREE(frame);
 164         return status;
 165 }
 166
 167 /* convert a SID to a string, either numeric or username/group */
 168 static void SidToString(struct cli_state *cli, fstring str, const DOM_SID *sid)
 169 {
 170         char *domain = NULL;
 171         char *name = NULL;
 172         enum lsa_SidType type;
 173         NTSTATUS status;
 174
 175         sid_to_fstring(str, sid);
 176
 177         if (numeric) {
 178                 return;
 179         }
 180
 181         status = cli_lsa_lookup_sid(cli, sid, talloc_tos(), &type,
 182                                     &domain, &name);
 183
 184         if (!NT_STATUS_IS_OK(status)) {
 185                 return;
 186         }
 187
 188         if (*domain) {
 189                 slprintf(str, sizeof(fstring) - 1, "%s%s%s",
 190                         domain, lp_winbind_separator(), name);
 191         } else {
 192                 fstrcpy(str, name);
 193         }
 194 }
 195
 196 /* convert a string to a SID, either numeric or username/group */
 197 static bool StringToSid(struct cli_state *cli, DOM_SID *sid, const char *str)
 198 {
 199         enum lsa_SidType type;
 200
 201         if (strncmp(str, "S-", 2) == 0) {
 202                 return string_to_sid(sid, str);
 203         }
 204
 205         return NT_STATUS_IS_OK(cli_lsa_lookup_name(cli, str, &type, sid));
 206 }
 207
 208 static void print_ace_flags(FILE *f, uint8_t flags)
 209 {
 210         char *str = talloc_strdup(NULL, "");
 211
 212         if (!str) {
 213                 goto out;
 214         }
 215
 216         if (flags & SEC_ACE_FLAG_OBJECT_INHERIT) {
 217                 str = talloc_asprintf(str, "%s%s",
 218                                 str, "OI|");
 219                 if (!str) {
 220                         goto out;
 221                 }
 222         }
 223         if (flags & SEC_ACE_FLAG_CONTAINER_INHERIT) {
 224                 str = talloc_asprintf(str, "%s%s",
 225                                 str, "CI|");
 226                 if (!str) {
 227                         goto out;
 228                 }
 229         }
 230         if (flags & SEC_ACE_FLAG_NO_PROPAGATE_INHERIT) {
 231                 str = talloc_asprintf(str, "%s%s",
 232                                 str, "NP|");
 233                 if (!str) {
 234                         goto out;
 235                 }
 236         }
 237         if (flags & SEC_ACE_FLAG_INHERIT_ONLY) {
 238                 str = talloc_asprintf(str, "%s%s",
 239                                 str, "IO|");
 240                 if (!str) {
 241                         goto out;
 242                 }
 243         }
 244         if (flags & SEC_ACE_FLAG_INHERITED_ACE) {
 245                 str = talloc_asprintf(str, "%s%s",
 246                                 str, "I|");
 247                 if (!str) {
 248                         goto out;
 249                 }
 250         }
 251         /* Ignore define SEC_ACE_FLAG_SUCCESSFUL_ACCESS ( 0x40 )
 252            and SEC_ACE_FLAG_FAILED_ACCESS ( 0x80 ) as they're
 253            audit ace flags. */
 254
 255         if (str[strlen(str)-1] == '|') {
 256                 str[strlen(str)-1] = '\0';
 257                 fprintf(f, "/%s/", str);
 258         } else {
 259                 fprintf(f, "/0x%x/", flags);
 260         }
 261         TALLOC_FREE(str);
 262         return;
 263
 264   out:
 265         fprintf(f, "/0x%x/", flags);
 266 }
 267
 268 /* print an ACE on a FILE, using either numeric or ascii representation */
 269 static void print_ace(struct cli_state *cli, FILE *f, SEC_ACE *ace)
 270 {
 271         const struct perm_value *v;
 272         fstring sidstr;
 273         int do_print = 0;
 274         uint32 got_mask;
 275
 276         SidToString(cli, sidstr, &ace->trustee);
 277
 278         fprintf(f, "%s:", sidstr);
 279
 280         if (numeric) {
 281                 fprintf(f, "%d/0x%x/0x%08x",
 282                         ace->type, ace->flags, ace->access_mask);
 283                 return;
 284         }
 285
 286         /* Ace type */
 287
 288         if (ace->type == SEC_ACE_TYPE_ACCESS_ALLOWED) {
 289                 fprintf(f, "ALLOWED");
 290         } else if (ace->type == SEC_ACE_TYPE_ACCESS_DENIED) {
 291                 fprintf(f, "DENIED");
 292         } else {
 293                 fprintf(f, "%d", ace->type);
 294         }
 295
 296         print_ace_flags(f, ace->flags);
 297
 298         /* Standard permissions */
 299
 300         for (v = standard_values; v->perm; v++) {
 301                 if (ace->access_mask == v->mask) {
 302                         fprintf(f, "%s", v->perm);
 303                         return;
 304                 }
 305         }
 306
 307         /* Special permissions.  Print out a hex value if we have
 308            leftover bits in the mask. */
 309
 310         got_mask = ace->access_mask;
 311
 312  again:
 313         for (v = special_values; v->perm; v++) {
 314                 if ((ace->access_mask & v->mask) == v->mask) {
 315                         if (do_print) {
 316                                 fprintf(f, "%s", v->perm);
 317                         }
 318                         got_mask &= ~v->mask;
 319                 }
 320         }
 321
 322         if (!do_print) {
 323                 if (got_mask != 0) {
 324                         fprintf(f, "0x%08x", ace->access_mask);
 325                 } else {
 326                         do_print = 1;
 327                         goto again;
 328                 }
 329         }
 330 }
 331
 332 static bool parse_ace_flags(const char *str, unsigned int *pflags)
 333 {
 334         const char *p = str;
 335         *pflags = 0;
 336
 337         while (*p) {
 338                 if (strnequal(p, "OI", 2)) {
 339                         *pflags |= SEC_ACE_FLAG_OBJECT_INHERIT;
 340                         p += 2;
 341                 } else if (strnequal(p, "CI", 2)) {
 342                         *pflags |= SEC_ACE_FLAG_CONTAINER_INHERIT;
 343                         p += 2;
 344                 } else if (strnequal(p, "NP", 2)) {
 345                         *pflags |= SEC_ACE_FLAG_NO_PROPAGATE_INHERIT;
 346                         p += 2;
 347                 } else if (strnequal(p, "IO", 2)) {
 348                         *pflags |= SEC_ACE_FLAG_INHERIT_ONLY;
 349                         p += 2;
 350                 } else if (*p == 'I') {
 351                         *pflags |= SEC_ACE_FLAG_INHERITED_ACE;
 352                         p += 1;
 353                 } else if (*p) {
 354                         return false;
 355                 }
 356
 357                 if (*p != '|' && *p != '\0') {
 358                         return false;
 359                 }
 360         }
 361         return true;
 362 }
 363
 364 /* parse an ACE in the same format as print_ace() */
 365 static bool parse_ace(struct cli_state *cli, SEC_ACE *ace,
 366                       const char *orig_str)
 367 {
 368         char *p;
 369         const char *cp;
 370         char *tok;
 371         unsigned int atype = 0;
 372         unsigned int aflags = 0;
 373         unsigned int amask = 0;
 374         DOM_SID sid;
 375         uint32_t mask;
 376         const struct perm_value *v;
 377         char *str = SMB_STRDUP(orig_str);
 378         TALLOC_CTX *frame = talloc_stackframe();
 379
 380         if (!str) {
 381                 TALLOC_FREE(frame);
 382                 return False;
 383         }
 384
 385         ZERO_STRUCTP(ace);
 386         p = strchr_m(str,':');
 387         if (!p) {
 388                 printf("ACE '%s': missing ':'.\n", orig_str);
 389                 SAFE_FREE(str);
 390                 TALLOC_FREE(frame);
 391                 return False;
 392         }
 393         *p = '\0';
 394         p++;
 395         /* Try to parse numeric form */
 396
 397         if (sscanf(p, "%i/%i/%i", &atype, &aflags, &amask) == 3 &&
 398             StringToSid(cli, &sid, str)) {
 399                 goto done;
 400         }
 401
 402         /* Try to parse text form */
 403
 404         if (!StringToSid(cli, &sid, str)) {
 405                 printf("ACE '%s': failed to convert '%s' to SID\n",
 406                         orig_str, str);
 407                 SAFE_FREE(str);
 408                 TALLOC_FREE(frame);
 409                 return False;
 410         }
 411
 412         cp = p;
 413         if (!next_token_talloc(frame, &cp, &tok, "/")) {
 414                 printf("ACE '%s': failed to find '/' character.\n",
 415                         orig_str);
 416                 SAFE_FREE(str);
 417                 TALLOC_FREE(frame);
 418                 return False;
 419         }
 420
 421         if (strncmp(tok, "ALLOWED", strlen("ALLOWED")) == 0) {
 422                 atype = SEC_ACE_TYPE_ACCESS_ALLOWED;
 423         } else if (strncmp(tok, "DENIED", strlen("DENIED")) == 0) {
 424                 atype = SEC_ACE_TYPE_ACCESS_DENIED;
 425         } else {
 426                 printf("ACE '%s': missing 'ALLOWED' or 'DENIED' entry at '%s'\n",
 427                         orig_str, tok);
 428                 SAFE_FREE(str);
 429                 TALLOC_FREE(frame);
 430                 return False;
 431         }
 432
 433         /* Only numeric form accepted for flags at present */
 434
 435         if (!next_token_talloc(frame, &cp, &tok, "/")) {
 436                 printf("ACE '%s': bad flags entry at '%s'\n",
 437                         orig_str, tok);
 438                 SAFE_FREE(str);
 439                 TALLOC_FREE(frame);
 440                 return False;
 441         }
 442
 443         if (tok[0] < '0' || tok[0] > '9') {
 444                 if (!parse_ace_flags(tok, &aflags)) {
 445                         printf("ACE '%s': bad named flags entry at '%s'\n",
 446                                 orig_str, tok);
 447                         SAFE_FREE(str);
 448                         TALLOC_FREE(frame);
 449                         return False;
 450                 }
 451         } else if (strnequal(tok, "0x", 2)) {
 452                 if (!sscanf(tok, "%x", &aflags)) {
 453                         printf("ACE '%s': bad hex flags entry at '%s'\n",
 454                                 orig_str, tok);
 455                         SAFE_FREE(str);
 456                         TALLOC_FREE(frame);
 457                         return False;
 458                 }
 459         } else {
 460                 if (!sscanf(tok, "%i", &aflags)) {
 461                         printf("ACE '%s': bad integer flags entry at '%s'\n",
 462                                 orig_str, tok);
 463                         SAFE_FREE(str);
 464                         TALLOC_FREE(frame);
 465                         return False;
 466                 }
 467         }
 468
 469         if (!next_token_talloc(frame, &cp, &tok, "/")) {
 470                 printf("ACE '%s': missing / at '%s'\n",
 471                         orig_str, tok);
 472                 SAFE_FREE(str);
 473                 TALLOC_FREE(frame);
 474                 return False;
 475         }
 476
 477         if (strncmp(tok, "0x", 2) == 0) {
 478                 if (sscanf(tok, "%i", &amask) != 1) {
 479                         printf("ACE '%s': bad hex number at '%s'\n",
 480                                 orig_str, tok);
 481                         SAFE_FREE(str);
 482                         TALLOC_FREE(frame);
 483                         return False;
 484                 }
 485                 goto done;
 486         }
 487
 488         for (v = standard_values; v->perm; v++) {
 489                 if (strcmp(tok, v->perm) == 0) {
 490                         amask = v->mask;
 491                         goto done;
 492                 }
 493         }
 494
 495         p = tok;
 496
 497         while(*p) {
 498                 bool found = False;
 499
 500                 for (v = special_values; v->perm; v++) {
 501                         if (v->perm[0] == *p) {
 502                                 amask |= v->mask;
 503                                 found = True;
 504                         }
 505                 }
 506
 507                 if (!found) {
 508                         printf("ACE '%s': bad permission value at '%s'\n",
 509                                 orig_str, p);
 510                         SAFE_FREE(str);
 511                         TALLOC_FREE(frame);
 512                         return False;
 513                 }
 514                 p++;
 515         }
 516
 517         if (*p) {
 518                 TALLOC_FREE(frame);
 519                 SAFE_FREE(str);
 520                 return False;
 521         }
 522
 523  done:
 524         mask = amask;
 525         init_sec_ace(ace, &sid, atype, mask, aflags);
 526         TALLOC_FREE(frame);
 527         SAFE_FREE(str);
 528         return True;
 529 }
 530
 531 /* add an ACE to a list of ACEs in a SEC_ACL */
 532 static bool add_ace(SEC_ACL **the_acl, SEC_ACE *ace)
 533 {
 534         SEC_ACL *new_ace;
 535         SEC_ACE *aces;
 536         if (! *the_acl) {
 537                 return (((*the_acl) = make_sec_acl(talloc_tos(), 3, 1, ace))
 538                         != NULL);
 539         }
 540
 541         if (!(aces = SMB_CALLOC_ARRAY(SEC_ACE, 1+(*the_acl)->num_aces))) {
 542                 return False;
 543         }
 544         memcpy(aces, (*the_acl)->aces, (*the_acl)->num_aces * sizeof(SEC_ACE));
 545         memcpy(aces+(*the_acl)->num_aces, ace, sizeof(SEC_ACE));
 546         new_ace = make_sec_acl(talloc_tos(),(*the_acl)->revision,1+(*the_acl)->num_aces, aces);
 547         SAFE_FREE(aces);
 548         (*the_acl) = new_ace;
 549         return True;
 550 }
 551
 552 /* parse a ascii version of a security descriptor */
 553 static SEC_DESC *sec_desc_parse(TALLOC_CTX *ctx, struct cli_state *cli, char *str)
 554 {
 555         const char *p = str;
 556         char *tok;
 557         SEC_DESC *ret = NULL;
 558         size_t sd_size;
 559         DOM_SID *grp_sid=NULL, *owner_sid=NULL;
 560         SEC_ACL *dacl=NULL;
 561         int revision=1;
 562
 563         while (next_token_talloc(ctx, &p, &tok, "\t,\r\n")) {
 564                 if (strncmp(tok,"REVISION:", 9) == 0) {
 565                         revision = strtol(tok+9, NULL, 16);
 566                         continue;
 567                 }
 568
 569                 if (strncmp(tok,"OWNER:", 6) == 0) {
 570                         if (owner_sid) {
 571                                 printf("Only specify owner once\n");
 572                                 goto done;
 573                         }
 574                         owner_sid = SMB_CALLOC_ARRAY(DOM_SID, 1);
 575                         if (!owner_sid ||
 576                             !StringToSid(cli, owner_sid, tok+6)) {
 577                                 printf("Failed to parse owner sid\n");
 578                                 goto done;
 579                         }
 580                         continue;
 581                 }
 582
 583                 if (strncmp(tok,"GROUP:", 6) == 0) {
 584                         if (grp_sid) {
 585                                 printf("Only specify group once\n");
 586                                 goto done;
 587                         }
 588                         grp_sid = SMB_CALLOC_ARRAY(DOM_SID, 1);
 589                         if (!grp_sid ||
 590                             !StringToSid(cli, grp_sid, tok+6)) {
 591                                 printf("Failed to parse group sid\n");
 592                                 goto done;
 593                         }
 594                         continue;
 595                 }
 596
 597                 if (strncmp(tok,"ACL:", 4) == 0) {
 598                         SEC_ACE ace;
 599                         if (!parse_ace(cli, &ace, tok+4)) {
 600                                 goto done;
 601                         }
 602                         if(!add_ace(&dacl, &ace)) {
 603                                 printf("Failed to add ACL %s\n", tok);
 604                                 goto done;
 605                         }
 606                         continue;
 607                 }
 608
 609                 printf("Failed to parse token '%s' in security descriptor,\n", tok);
 610                 goto done;
 611         }
 612
 613         ret = make_sec_desc(ctx,revision, SEC_DESC_SELF_RELATIVE, owner_sid, grp_sid,
 614                             NULL, dacl, &sd_size);
 615
 616   done:
 617         SAFE_FREE(grp_sid);
 618         SAFE_FREE(owner_sid);
 619
 620         return ret;
 621 }
 622
 623
 624 /* print a ascii version of a security descriptor on a FILE handle */
 625 static void sec_desc_print(struct cli_state *cli, FILE *f, SEC_DESC *sd)
 626 {
 627         fstring sidstr;
 628         uint32 i;
 629
 630         fprintf(f, "REVISION:%d\n", sd->revision);
 631         fprintf(f, "CONTROL:0x%x\n", sd->type);
 632
 633         /* Print owner and group sid */
 634
 635         if (sd->owner_sid) {
 636                 SidToString(cli, sidstr, sd->owner_sid);
 637         } else {
 638                 fstrcpy(sidstr, "");
 639         }
 640
 641         fprintf(f, "OWNER:%s\n", sidstr);
 642
 643         if (sd->group_sid) {
 644                 SidToString(cli, sidstr, sd->group_sid);
 645         } else {
 646                 fstrcpy(sidstr, "");
 647         }
 648
 649         fprintf(f, "GROUP:%s\n", sidstr);
 650
 651         /* Print aces */
 652         for (i = 0; sd->dacl && i < sd->dacl->num_aces; i++) {
 653                 SEC_ACE *ace = &sd->dacl->aces[i];
 654                 fprintf(f, "ACL:");
 655                 print_ace(cli, f, ace);
 656                 fprintf(f, "\n");
 657         }
 658
 659 }
 660
 661 /*****************************************************
 662 dump the acls for a file
 663 *******************************************************/
 664 static int cacl_dump(struct cli_state *cli, char *filename)
 665 {
 666         int result = EXIT_FAILED;
 667         uint16_t fnum = (uint16_t)-1;
 668         SEC_DESC *sd;
 669
 670         if (test_args)
 671                 return EXIT_OK;
 672
 673         if (!NT_STATUS_IS_OK(cli_ntcreate(cli, filename, 0, CREATE_ACCESS_READ, 0,
 674                                 FILE_SHARE_READ|FILE_SHARE_WRITE, FILE_OPEN, 0x0, 0x0, &fnum))) {
 675                 printf("Failed to open %s: %s\n", filename, cli_errstr(cli));
 676                 goto done;
 677         }
 678
 679         sd = cli_query_secdesc(cli, fnum, talloc_tos());
 680
 681         if (!sd) {
 682                 printf("ERROR: secdesc query failed: %s\n", cli_errstr(cli));
 683                 goto done;
 684         }
 685
 686         if (sddl) {
 687                 printf("%s\n", sddl_encode(talloc_tos(), sd,
 688                                            get_global_sam_sid()));
 689         } else {
 690                 sec_desc_print(cli, stdout, sd);
 691         }
 692
 693         result = EXIT_OK;
 694
 695 done:
 696         if (fnum != (uint16_t)-1)
 697                 cli_close(cli, fnum);
 698
 699         return result;
 700 }
 701
 702 /*****************************************************
 703 Change the ownership or group ownership of a file. Just
 704 because the NT docs say this can't be done :-). JRA.
 705 *******************************************************/
 706
 707 static int owner_set(struct cli_state *cli, enum chown_mode change_mode,
 708                         const char *filename, const char *new_username)
 709 {
 710         uint16_t fnum;
 711         DOM_SID sid;
 712         SEC_DESC *sd, *old;
 713         size_t sd_size;
 714
 715         if (!NT_STATUS_IS_OK(cli_ntcreate(cli, filename, 0, CREATE_ACCESS_READ, 0,
 716                                 FILE_SHARE_READ|FILE_SHARE_WRITE, FILE_OPEN, 0x0, 0x0, &fnum))) {
 717                 printf("Failed to open %s: %s\n", filename, cli_errstr(cli));
 718                 return EXIT_FAILED;
 719         }
 720
 721         if (!StringToSid(cli, &sid, new_username))
 722                 return EXIT_PARSE_ERROR;
 723
 724         old = cli_query_secdesc(cli, fnum, talloc_tos());
 725
 726         cli_close(cli, fnum);
 727
 728         if (!old) {
 729                 printf("owner_set: Failed to query old descriptor\n");
 730                 return EXIT_FAILED;
 731         }
 732
 733         sd = make_sec_desc(talloc_tos(),old->revision, old->type,
 734                                 (change_mode == REQUEST_CHOWN) ? &sid : NULL,
 735                                 (change_mode == REQUEST_CHGRP) ? &sid : NULL,
 736                            NULL, NULL, &sd_size);
 737
 738         if (!NT_STATUS_IS_OK(cli_ntcreate(cli, filename, 0, WRITE_OWNER_ACCESS, 0,
 739                         FILE_SHARE_READ|FILE_SHARE_WRITE, FILE_OPEN, 0x0, 0x0, &fnum))) {
 740                 printf("Failed to open %s: %s\n", filename, cli_errstr(cli));
 741                 return EXIT_FAILED;
 742         }
 743
 744         if (!cli_set_secdesc(cli, fnum, sd)) {
 745                 printf("ERROR: secdesc set failed: %s\n", cli_errstr(cli));
 746                 cli_close(cli, fnum);
 747                 return EXIT_FAILED;
 748         }
 749
 750         cli_close(cli, fnum);
 751
 752         return EXIT_OK;
 753 }
 754
 755
 756 /* The MSDN is contradictory over the ordering of ACE entries in an
 757    ACL.  However NT4 gives a "The information may have been modified
 758    by a computer running Windows NT 5.0" if denied ACEs do not appear
 759    before allowed ACEs. At
 760    http://technet.microsoft.com/en-us/library/cc781716.aspx the
 761    canonical order is specified as "Explicit Deny, Explicit Allow,
 762    Inherited ACEs unchanged" */
 763
 764 static int ace_compare(SEC_ACE *ace1, SEC_ACE *ace2)
 765 {
 766         if (sec_ace_equal(ace1, ace2))
 767                 return 0;
 768
 769         if ((ace1->flags & SEC_ACE_FLAG_INHERITED_ACE) &&
 770                         !(ace2->flags & SEC_ACE_FLAG_INHERITED_ACE))
 771                 return 1;
 772         if (!(ace1->flags & SEC_ACE_FLAG_INHERITED_ACE) &&
 773                         (ace2->flags & SEC_ACE_FLAG_INHERITED_ACE))
 774                 return -1;
 775         if ((ace1->flags & SEC_ACE_FLAG_INHERITED_ACE) &&
 776                         (ace2->flags & SEC_ACE_FLAG_INHERITED_ACE))
 777                 return ace1 - ace2;
 778
 779         if (ace1->type != ace2->type)
 780                 return ace2->type - ace1->type;
 781
 782         if (sid_compare(&ace1->trustee, &ace2->trustee))
 783                 return sid_compare(&ace1->trustee, &ace2->trustee);
 784
 785         if (ace1->flags != ace2->flags)
 786                 return ace1->flags - ace2->flags;
 787
 788         if (ace1->access_mask != ace2->access_mask)
 789                 return ace1->access_mask - ace2->access_mask;
 790
 791         if (ace1->size != ace2->size)
 792                 return ace1->size - ace2->size;
 793
 794         return memcmp(ace1, ace2, sizeof(SEC_ACE));
 795 }
 796
 797 static void sort_acl(SEC_ACL *the_acl)
 798 {
 799         uint32 i;
 800         if (!the_acl) return;
 801
 802         TYPESAFE_QSORT(the_acl->aces, the_acl->num_aces, ace_compare);
 803
 804         for (i=1;i<the_acl->num_aces;) {
 805                 if (sec_ace_equal(&the_acl->aces[i-1], &the_acl->aces[i])) {
 806                         int j;
 807                         for (j=i; j<the_acl->num_aces-1; j++) {
 808                                 the_acl->aces[j] = the_acl->aces[j+1];
 809                         }
 810                         the_acl->num_aces--;
 811                 } else {
 812                         i++;
 813                 }
 814         }
 815 }
 816
 817 /*****************************************************
 818 set the ACLs on a file given an ascii description
 819 *******************************************************/
 820
 821 static int cacl_set(struct cli_state *cli, char *filename,
 822                     char *the_acl, enum acl_mode mode)
 823 {
 824         uint16_t fnum;
 825         SEC_DESC *sd, *old;
 826         uint32 i, j;
 827         size_t sd_size;
 828         int result = EXIT_OK;
 829
 830         if (sddl) {
 831                 sd = sddl_decode(talloc_tos(), the_acl, get_global_sam_sid());
 832         } else {
 833                 sd = sec_desc_parse(talloc_tos(), cli, the_acl);
 834         }
 835
 836         if (!sd) return EXIT_PARSE_ERROR;
 837         if (test_args) return EXIT_OK;
 838
 839         /* The desired access below is the only one I could find that works
 840            with NT4, W2KP and Samba */
 841
 842         if (!NT_STATUS_IS_OK(cli_ntcreate(cli, filename, 0, CREATE_ACCESS_READ, 0,
 843                                 FILE_SHARE_READ|FILE_SHARE_WRITE, FILE_OPEN, 0x0, 0x0, &fnum))) {
 844                 printf("cacl_set failed to open %s: %s\n", filename, cli_errstr(cli));
 845                 return EXIT_FAILED;
 846         }
 847
 848         old = cli_query_secdesc(cli, fnum, talloc_tos());
 849
 850         if (!old) {
 851                 printf("calc_set: Failed to query old descriptor\n");
 852                 return EXIT_FAILED;
 853         }
 854
 855         cli_close(cli, fnum);
 856
 857         /* the logic here is rather more complex than I would like */
 858         switch (mode) {
 859         case SMB_ACL_DELETE:
 860                 for (i=0;sd->dacl && i<sd->dacl->num_aces;i++) {
 861                         bool found = False;
 862
 863                         for (j=0;old->dacl && j<old->dacl->num_aces;j++) {
 864                                 if (sec_ace_equal(&sd->dacl->aces[i],
 865                                                   &old->dacl->aces[j])) {
 866                                         uint32 k;
 867                                         for (k=j; k<old->dacl->num_aces-1;k++) {
 868                                                 old->dacl->aces[k] = old->dacl->aces[k+1];
 869                                         }
 870                                         old->dacl->num_aces--;
 871                                         found = True;
 872                                         break;
 873                                 }
 874                         }
 875
 876                         if (!found) {
 877                                 printf("ACL for ACE:");
 878                                 print_ace(cli, stdout, &sd->dacl->aces[i]);
 879                                 printf(" not found\n");
 880                         }
 881                 }
 882                 break;
 883
 884         case SMB_ACL_MODIFY:
 885                 for (i=0;sd->dacl && i<sd->dacl->num_aces;i++) {
 886                         bool found = False;
 887
 888                         for (j=0;old->dacl && j<old->dacl->num_aces;j++) {
 889                                 if (sid_equal(&sd->dacl->aces[i].trustee,
 890                                               &old->dacl->aces[j].trustee)) {
 891                                         old->dacl->aces[j] = sd->dacl->aces[i];
 892                                         found = True;
 893                                 }
 894                         }
 895
 896                         if (!found) {
 897                                 fstring str;
 898
 899                                 SidToString(cli, str,
 900                                             &sd->dacl->aces[i].trustee);
 901                                 printf("ACL for SID %s not found\n", str);
 902                         }
 903                 }
 904
 905                 if (sd->owner_sid) {
 906                         old->owner_sid = sd->owner_sid;
 907                 }
 908
 909                 if (sd->group_sid) {
 910                         old->group_sid = sd->group_sid;
 911                 }
 912
 913                 break;
 914
 915         case SMB_ACL_ADD:
 916                 for (i=0;sd->dacl && i<sd->dacl->num_aces;i++) {
 917                         add_ace(&old->dacl, &sd->dacl->aces[i]);
 918                 }
 919                 break;
 920
 921         case SMB_ACL_SET:
 922                 old = sd;
 923                 break;
 924         }
 925
 926         /* Denied ACE entries must come before allowed ones */
 927         sort_acl(old->dacl);
 928
 929         /* Create new security descriptor and set it */
 930
 931         /* We used to just have "WRITE_DAC_ACCESS" without WRITE_OWNER.
 932            But if we're sending an owner, even if it's the same as the one
 933            that already exists then W2K3 insists we open with WRITE_OWNER access.
 934            I need to check that setting a SD with no owner set works against WNT
 935            and W2K. JRA.
 936         */
 937
 938         sd = make_sec_desc(talloc_tos(),old->revision, old->type,
 939                            old->owner_sid, old->group_sid,
 940                            NULL, old->dacl, &sd_size);
 941
 942         if (!NT_STATUS_IS_OK(cli_ntcreate(cli, filename, 0, WRITE_DAC_ACCESS|WRITE_OWNER_ACCESS, 0,
 943                         FILE_SHARE_READ|FILE_SHARE_WRITE, FILE_OPEN, 0x0, 0x0, &fnum))) {
 944                 printf("cacl_set failed to open %s: %s\n", filename, cli_errstr(cli));
 945                 return EXIT_FAILED;
 946         }
 947
 948         if (!cli_set_secdesc(cli, fnum, sd)) {
 949                 printf("ERROR: secdesc set failed: %s\n", cli_errstr(cli));
 950                 result = EXIT_FAILED;
 951         }
 952
 953         /* Clean up */
 954
 955         cli_close(cli, fnum);
 956
 957         return result;
 958 }
 959
 960
 961 /*****************************************************
 962  Return a connection to a server.
 963 *******************************************************/
 964 static struct cli_state *connect_one(struct user_auth_info *auth_info,
 965                                      const char *server, const char *share)
 966 {
 967         struct cli_state *c = NULL;
 968         struct sockaddr_storage ss;
 969         NTSTATUS nt_status;
 970         uint32_t flags = 0;
 971
 972         zero_sockaddr(&ss);
 973
 974         if (get_cmdline_auth_info_use_kerberos(auth_info)) {
 975                 flags |= CLI_FULL_CONNECTION_USE_KERBEROS |
 976                          CLI_FULL_CONNECTION_FALLBACK_AFTER_KERBEROS;
 977         }
 978
 979         if (get_cmdline_auth_info_use_machine_account(auth_info) &&
 980             !set_cmdline_auth_info_machine_account_creds(auth_info)) {
 981                 return NULL;
 982         }
 983
 984         set_cmdline_auth_info_getpass(auth_info);
 985
 986         nt_status = cli_full_connection(&c, global_myname(), server,
 987                                 &ss, 0,
 988                                 share, "?????",
 989                                 get_cmdline_auth_info_username(auth_info),
 990                                 lp_workgroup(),
 991                                 get_cmdline_auth_info_password(auth_info),
 992                                 flags,
 993                                 get_cmdline_auth_info_signing_state(auth_info),
 994                                 NULL);
 995         if (!NT_STATUS_IS_OK(nt_status)) {
 996                 DEBUG(0,("cli_full_connection failed! (%s)\n", nt_errstr(nt_status)));
 997                 return NULL;
 998         }
 999
1000         if (get_cmdline_auth_info_smb_encrypt(auth_info)) {
1001                 nt_status = cli_cm_force_encryption(c,
1002                                         get_cmdline_auth_info_username(auth_info),
1003                                         get_cmdline_auth_info_password(auth_info),
1004                                         lp_workgroup(),
1005                                         share);
1006                 if (!NT_STATUS_IS_OK(nt_status)) {
1007                         cli_shutdown(c);
1008                         c = NULL;
1009                 }
1010         }
1011
1012         return c;
1013 }
1014
1015 /****************************************************************************
1016   main program
1017 ****************************************************************************/
1018  int main(int argc, const char *argv[])
1019 {
1020         char *share;
1021         int opt;
1022         enum acl_mode mode = SMB_ACL_SET;
1023         static char *the_acl = NULL;
1024         enum chown_mode change_mode = REQUEST_NONE;
1025         int result;
1026         char *path;
1027         char *filename = NULL;
1028         poptContext pc;
1029         struct poptOption long_options[] = {
1030                 POPT_AUTOHELP
1031                 { "delete", 'D', POPT_ARG_STRING, NULL, 'D', "Delete an acl", "ACL" },
1032                 { "modify", 'M', POPT_ARG_STRING, NULL, 'M', "Modify an acl", "ACL" },
1033                 { "add", 'a', POPT_ARG_STRING, NULL, 'a', "Add an acl", "ACL" },
1034                 { "set", 'S', POPT_ARG_STRING, NULL, 'S', "Set acls", "ACLS" },
1035                 { "chown", 'C', POPT_ARG_STRING, NULL, 'C', "Change ownership of a file", "USERNAME" },
1036                 { "chgrp", 'G', POPT_ARG_STRING, NULL, 'G', "Change group ownership of a file", "GROUPNAME" },
1037                 { "numeric", 0, POPT_ARG_NONE, &numeric, 1, "Don't resolve sids or masks to names" },
1038                 { "sddl", 0, POPT_ARG_NONE, &sddl, 1, "Output and input acls in sddl format" },
1039                 { "test-args", 't', POPT_ARG_NONE, &test_args, 1, "Test arguments"},
1040                 POPT_COMMON_SAMBA
1041                 POPT_COMMON_CONNECTION
1042                 POPT_COMMON_CREDENTIALS
1043                 POPT_TABLEEND
1044         };
1045
1046         struct cli_state *cli;
1047         TALLOC_CTX *frame = talloc_stackframe();
1048         const char *owner_username = "";
1049         char *server;
1050         struct user_auth_info *auth_info;
1051
1052         load_case_tables();
1053
1054
1055         /* set default debug level to 1 regardless of what smb.conf sets */
1056         setup_logging( "smbcacls", True );
1057         DEBUGLEVEL_CLASS[DBGC_ALL] = 1;
1058         dbf = x_stderr;
1059         x_setbuf( x_stderr, NULL );
1060         AllowDebugChange = false;
1061
1062         setlinebuf(stdout);
1063
1064         lp_load(get_dyn_CONFIGFILE(),True,False,False,True);
1065         load_interfaces();
1066
1067         auth_info = user_auth_info_init(frame);
1068         if (auth_info == NULL) {
1069                 exit(1);
1070         }
1071         popt_common_set_auth_info(auth_info);
1072
1073         pc = poptGetContext("smbcacls", argc, argv, long_options, 0);
1074
1075         poptSetOtherOptionHelp(pc, "//server1/share1 filename\nACLs look like: "
1076                 "'ACL:user:[ALLOWED|DENIED]/flags/permissions'");
1077
1078         while ((opt = poptGetNextOpt(pc)) != -1) {
1079                 switch (opt) {
1080                 case 'S':
1081                         the_acl = smb_xstrdup(poptGetOptArg(pc));
1082                         mode = SMB_ACL_SET;
1083                         break;
1084
1085                 case 'D':
1086                         the_acl = smb_xstrdup(poptGetOptArg(pc));
1087                         mode = SMB_ACL_DELETE;
1088                         break;
1089
1090                 case 'M':
1091                         the_acl = smb_xstrdup(poptGetOptArg(pc));
1092                         mode = SMB_ACL_MODIFY;
1093                         break;
1094
1095                 case 'a':
1096                         the_acl = smb_xstrdup(poptGetOptArg(pc));
1097                         mode = SMB_ACL_ADD;
1098                         break;
1099
1100                 case 'C':
1101                         owner_username = poptGetOptArg(pc);
1102                         change_mode = REQUEST_CHOWN;
1103                         break;
1104
1105                 case 'G':
1106                         owner_username = poptGetOptArg(pc);
1107                         change_mode = REQUEST_CHGRP;
1108                         break;
1109                 }
1110         }
1111
1112         /* Make connection to server */
1113         if(!poptPeekArg(pc)) {
1114                 poptPrintUsage(pc, stderr, 0);
1115                 return -1;
1116         }
1117
1118         path = talloc_strdup(frame, poptGetArg(pc));
1119         if (!path) {
1120                 return -1;
1121         }
1122
1123         if(!poptPeekArg(pc)) {
1124                 poptPrintUsage(pc, stderr, 0);
1125                 return -1;
1126         }
1127
1128         filename = talloc_strdup(frame, poptGetArg(pc));
1129         if (!filename) {
1130                 return -1;
1131         }
1132
1133         string_replace(path,'/','\\');
1134
1135         server = talloc_strdup(frame, path+2);
1136         if (!server) {
1137                 return -1;
1138         }
1139         share = strchr_m(server,'\\');
1140         if (!share) {
1141                 printf("Invalid argument: %s\n", share);
1142                 return -1;
1143         }
1144
1145         *share = 0;
1146         share++;
1147
1148         if (!test_args) {
1149                 cli = connect_one(auth_info, server, share);
1150                 if (!cli) {
1151                         exit(EXIT_FAILED);
1152                 }
1153         } else {
1154                 exit(0);
1155         }
1156
1157         string_replace(filename, '/', '\\');
1158         if (filename[0] != '\\') {
1159                 filename = talloc_asprintf(frame,
1160                                 "\\%s",
1161                                 filename);
1162                 if (!filename) {
1163                         return -1;
1164                 }
1165         }
1166
1167         /* Perform requested action */
1168
1169         if (change_mode != REQUEST_NONE) {
1170                 result = owner_set(cli, change_mode, filename, owner_username);
1171         } else if (the_acl) {
1172                 result = cacl_set(cli, filename, the_acl, mode);
1173         } else {
1174                 result = cacl_dump(cli, filename);
1175         }
1176
1177         TALLOC_FREE(frame);
1178
1179         return result;
1180 }