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