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 #include "../librpc/gen_ndr/ndr_lsa.h"
  26
  27 extern bool AllowDebugChange;
  28
  29 static int test_args;
  30
  31 #define CREATE_ACCESS_READ READ_CONTROL_ACCESS
  32
  33 /* numeric is set when the user wants numeric SIDs and ACEs rather
  34    than going via LSA calls to resolve them */
  35 static int numeric;
  36
  37 static int sddl;
  38
  39 enum acl_mode {SMB_ACL_SET, SMB_ACL_DELETE, SMB_ACL_MODIFY, SMB_ACL_ADD };
  40 enum chown_mode {REQUEST_NONE, REQUEST_CHOWN, REQUEST_CHGRP, REQUEST_INHERIT};
  41 enum exit_values {EXIT_OK, EXIT_FAILED, EXIT_PARSE_ERROR};
  42
  43 struct perm_value {
  44         const char *perm;
  45         uint32 mask;
  46 };
  47
  48 /* These values discovered by inspection */
  49
  50 static const struct perm_value special_values[] = {
  51         { "R", 0x00120089 },
  52         { "W", 0x00120116 },
  53         { "X", 0x001200a0 },
  54         { "D", 0x00010000 },
  55         { "P", 0x00040000 },
  56         { "O", 0x00080000 },
  57         { NULL, 0 },
  58 };
  59
  60 static const struct perm_value standard_values[] = {
  61         { "READ",   0x001200a9 },
  62         { "CHANGE", 0x001301bf },
  63         { "FULL",   0x001f01ff },
  64         { NULL, 0 },
  65 };
  66
  67 /* Open cli connection and policy handle */
  68
  69 static NTSTATUS cli_lsa_lookup_sid(struct cli_state *cli,
  70                                    const DOM_SID *sid,
  71                                    TALLOC_CTX *mem_ctx,
  72                                    enum lsa_SidType *type,
  73                                    char **domain, char **name)
  74 {
  75         uint16 orig_cnum = cli->cnum;
  76         struct rpc_pipe_client *p = NULL;
  77         struct policy_handle handle;
  78         NTSTATUS status;
  79         TALLOC_CTX *frame = talloc_stackframe();
  80         enum lsa_SidType *types;
  81         char **domains;
  82         char **names;
  83
  84         status = cli_tcon_andx(cli, "IPC$", "?????", "", 0);
  85         if (!NT_STATUS_IS_OK(status)) {
  86                 return status;
  87         }
  88
  89         status = cli_rpc_pipe_open_noauth(cli, &ndr_table_lsarpc.syntax_id,
  90                                           &p);
  91         if (!NT_STATUS_IS_OK(status)) {
  92                 goto fail;
  93         }
  94
  95         status = rpccli_lsa_open_policy(p, talloc_tos(), True,
  96                                         GENERIC_EXECUTE_ACCESS, &handle);
  97         if (!NT_STATUS_IS_OK(status)) {
  98                 goto fail;
  99         }
 100
 101         status = rpccli_lsa_lookup_sids(p, talloc_tos(), &handle, 1, sid,
 102                                         &domains, &names, &types);
 103         if (!NT_STATUS_IS_OK(status)) {
 104                 goto fail;
 105         }
 106
 107         *type = types[0];
 108         *domain = talloc_move(mem_ctx, &domains[0]);
 109         *name = talloc_move(mem_ctx, &names[0]);
 110
 111         status = NT_STATUS_OK;
 112  fail:
 113         TALLOC_FREE(p);
 114         cli_tdis(cli);
 115         cli->cnum = orig_cnum;
 116         TALLOC_FREE(frame);
 117         return status;
 118 }
 119
 120 static NTSTATUS cli_lsa_lookup_name(struct cli_state *cli,
 121                                     const char *name,
 122                                     enum lsa_SidType *type,
 123                                     DOM_SID *sid)
 124 {
 125         uint16 orig_cnum = cli->cnum;
 126         struct rpc_pipe_client *p;
 127         struct policy_handle handle;
 128         NTSTATUS status;
 129         TALLOC_CTX *frame = talloc_stackframe();
 130         DOM_SID *sids;
 131         enum lsa_SidType *types;
 132
 133         status = cli_tcon_andx(cli, "IPC$", "?????", "", 0);
 134         if (!NT_STATUS_IS_OK(status)) {
 135                 return status;
 136         }
 137
 138         status = cli_rpc_pipe_open_noauth(cli, &ndr_table_lsarpc.syntax_id,
 139                                           &p);
 140         if (!NT_STATUS_IS_OK(status)) {
 141                 goto fail;
 142         }
 143
 144         status = rpccli_lsa_open_policy(p, talloc_tos(), True,
 145                                         GENERIC_EXECUTE_ACCESS, &handle);
 146         if (!NT_STATUS_IS_OK(status)) {
 147                 goto fail;
 148         }
 149
 150         status = rpccli_lsa_lookup_names(p, talloc_tos(), &handle, 1, &name,
 151                                          NULL, 1, &sids, &types);
 152         if (!NT_STATUS_IS_OK(status)) {
 153                 goto fail;
 154         }
 155
 156         *type = types[0];
 157         *sid = sids[0];
 158
 159         status = NT_STATUS_OK;
 160  fail:
 161         TALLOC_FREE(p);
 162         cli_tdis(cli);
 163         cli->cnum = orig_cnum;
 164         TALLOC_FREE(frame);
 165         return status;
 166 }
 167
 168 /* convert a SID to a string, either numeric or username/group */
 169 static void SidToString(struct cli_state *cli, fstring str, const DOM_SID *sid)
 170 {
 171         char *domain = NULL;
 172         char *name = NULL;
 173         enum lsa_SidType type;
 174         NTSTATUS status;
 175
 176         sid_to_fstring(str, sid);
 177
 178         if (numeric) {
 179                 return;
 180         }
 181
 182         status = cli_lsa_lookup_sid(cli, sid, talloc_tos(), &type,
 183                                     &domain, &name);
 184
 185         if (!NT_STATUS_IS_OK(status)) {
 186                 return;
 187         }
 188
 189         if (*domain) {
 190                 slprintf(str, sizeof(fstring) - 1, "%s%s%s",
 191                         domain, lp_winbind_separator(), name);
 192         } else {
 193                 fstrcpy(str, name);
 194         }
 195 }
 196
 197 /* convert a string to a SID, either numeric or username/group */
 198 static bool StringToSid(struct cli_state *cli, DOM_SID *sid, const char *str)
 199 {
 200         enum lsa_SidType type;
 201
 202         if (strncmp(str, "S-", 2) == 0) {
 203                 return string_to_sid(sid, str);
 204         }
 205
 206         return NT_STATUS_IS_OK(cli_lsa_lookup_name(cli, str, &type, sid));
 207 }
 208
 209 static void print_ace_flags(FILE *f, uint8_t flags)
 210 {
 211         char *str = talloc_strdup(NULL, "");
 212
 213         if (!str) {
 214                 goto out;
 215         }
 216
 217         if (flags & SEC_ACE_FLAG_OBJECT_INHERIT) {
 218                 str = talloc_asprintf(str, "%s%s",
 219                                 str, "OI|");
 220                 if (!str) {
 221                         goto out;
 222                 }
 223         }
 224         if (flags & SEC_ACE_FLAG_CONTAINER_INHERIT) {
 225                 str = talloc_asprintf(str, "%s%s",
 226                                 str, "CI|");
 227                 if (!str) {
 228                         goto out;
 229                 }
 230         }
 231         if (flags & SEC_ACE_FLAG_NO_PROPAGATE_INHERIT) {
 232                 str = talloc_asprintf(str, "%s%s",
 233                                 str, "NP|");
 234                 if (!str) {
 235                         goto out;
 236                 }
 237         }
 238         if (flags & SEC_ACE_FLAG_INHERIT_ONLY) {
 239                 str = talloc_asprintf(str, "%s%s",
 240                                 str, "IO|");
 241                 if (!str) {
 242                         goto out;
 243                 }
 244         }
 245         if (flags & SEC_ACE_FLAG_INHERITED_ACE) {
 246                 str = talloc_asprintf(str, "%s%s",
 247                                 str, "I|");
 248                 if (!str) {
 249                         goto out;
 250                 }
 251         }
 252         /* Ignore define SEC_ACE_FLAG_SUCCESSFUL_ACCESS ( 0x40 )
 253            and SEC_ACE_FLAG_FAILED_ACCESS ( 0x80 ) as they're
 254            audit ace flags. */
 255
 256         if (str[strlen(str)-1] == '|') {
 257                 str[strlen(str)-1] = '\0';
 258                 fprintf(f, "/%s/", str);
 259         } else {
 260                 fprintf(f, "/0x%x/", flags);
 261         }
 262         TALLOC_FREE(str);
 263         return;
 264
 265   out:
 266         fprintf(f, "/0x%x/", flags);
 267 }
 268
 269 /* print an ACE on a FILE, using either numeric or ascii representation */
 270 static void print_ace(struct cli_state *cli, FILE *f, struct security_ace *ace)
 271 {
 272         const struct perm_value *v;
 273         fstring sidstr;
 274         int do_print = 0;
 275         uint32 got_mask;
 276
 277         SidToString(cli, sidstr, &ace->trustee);
 278
 279         fprintf(f, "%s:", sidstr);
 280
 281         if (numeric) {
 282                 fprintf(f, "%d/0x%x/0x%08x",
 283                         ace->type, ace->flags, ace->access_mask);
 284                 return;
 285         }
 286
 287         /* Ace type */
 288
 289         if (ace->type == SEC_ACE_TYPE_ACCESS_ALLOWED) {
 290                 fprintf(f, "ALLOWED");
 291         } else if (ace->type == SEC_ACE_TYPE_ACCESS_DENIED) {
 292                 fprintf(f, "DENIED");
 293         } else {
 294                 fprintf(f, "%d", ace->type);
 295         }
 296
 297         print_ace_flags(f, ace->flags);
 298
 299         /* Standard permissions */
 300
 301         for (v = standard_values; v->perm; v++) {
 302                 if (ace->access_mask == v->mask) {
 303                         fprintf(f, "%s", v->perm);
 304                         return;
 305                 }
 306         }
 307
 308         /* Special permissions.  Print out a hex value if we have
 309            leftover bits in the mask. */
 310
 311         got_mask = ace->access_mask;
 312
 313  again:
 314         for (v = special_values; v->perm; v++) {
 315                 if ((ace->access_mask & v->mask) == v->mask) {
 316                         if (do_print) {
 317                                 fprintf(f, "%s", v->perm);
 318                         }
 319                         got_mask &= ~v->mask;
 320                 }
 321         }
 322
 323         if (!do_print) {
 324                 if (got_mask != 0) {
 325                         fprintf(f, "0x%08x", ace->access_mask);
 326                 } else {
 327                         do_print = 1;
 328                         goto again;
 329                 }
 330         }
 331 }
 332
 333 static bool parse_ace_flags(const char *str, unsigned int *pflags)
 334 {
 335         const char *p = str;
 336         *pflags = 0;
 337
 338         while (*p) {
 339                 if (strnequal(p, "OI", 2)) {
 340                         *pflags |= SEC_ACE_FLAG_OBJECT_INHERIT;
 341                         p += 2;
 342                 } else if (strnequal(p, "CI", 2)) {
 343                         *pflags |= SEC_ACE_FLAG_CONTAINER_INHERIT;
 344                         p += 2;
 345                 } else if (strnequal(p, "NP", 2)) {
 346                         *pflags |= SEC_ACE_FLAG_NO_PROPAGATE_INHERIT;
 347                         p += 2;
 348                 } else if (strnequal(p, "IO", 2)) {
 349                         *pflags |= SEC_ACE_FLAG_INHERIT_ONLY;
 350                         p += 2;
 351                 } else if (*p == 'I') {
 352                         *pflags |= SEC_ACE_FLAG_INHERITED_ACE;
 353                         p += 1;
 354                 } else if (*p) {
 355                         return false;
 356                 }
 357
 358                 if (*p != '|' && *p != '\0') {
 359                         return false;
 360                 }
 361         }
 362         return true;
 363 }
 364
 365 /* parse an ACE in the same format as print_ace() */
 366 static bool parse_ace(struct cli_state *cli, struct security_ace *ace,
 367                       const char *orig_str)
 368 {
 369         char *p;
 370         const char *cp;
 371         char *tok;
 372         unsigned int atype = 0;
 373         unsigned int aflags = 0;
 374         unsigned int amask = 0;
 375         DOM_SID sid;
 376         uint32_t mask;
 377         const struct perm_value *v;
 378         char *str = SMB_STRDUP(orig_str);
 379         TALLOC_CTX *frame = talloc_stackframe();
 380
 381         if (!str) {
 382                 TALLOC_FREE(frame);
 383                 return False;
 384         }
 385
 386         ZERO_STRUCTP(ace);
 387         p = strchr_m(str,':');
 388         if (!p) {
 389                 printf("ACE '%s': missing ':'.\n", orig_str);
 390                 SAFE_FREE(str);
 391                 TALLOC_FREE(frame);
 392                 return False;
 393         }
 394         *p = '\0';
 395         p++;
 396         /* Try to parse numeric form */
 397
 398         if (sscanf(p, "%i/%i/%i", &atype, &aflags, &amask) == 3 &&
 399             StringToSid(cli, &sid, str)) {
 400                 goto done;
 401         }
 402
 403         /* Try to parse text form */
 404
 405         if (!StringToSid(cli, &sid, str)) {
 406                 printf("ACE '%s': failed to convert '%s' to SID\n",
 407                         orig_str, str);
 408                 SAFE_FREE(str);
 409                 TALLOC_FREE(frame);
 410                 return False;
 411         }
 412
 413         cp = p;
 414         if (!next_token_talloc(frame, &cp, &tok, "/")) {
 415                 printf("ACE '%s': failed to find '/' character.\n",
 416                         orig_str);
 417                 SAFE_FREE(str);
 418                 TALLOC_FREE(frame);
 419                 return False;
 420         }
 421
 422         if (strncmp(tok, "ALLOWED", strlen("ALLOWED")) == 0) {
 423                 atype = SEC_ACE_TYPE_ACCESS_ALLOWED;
 424         } else if (strncmp(tok, "DENIED", strlen("DENIED")) == 0) {
 425                 atype = SEC_ACE_TYPE_ACCESS_DENIED;
 426         } else {
 427                 printf("ACE '%s': missing 'ALLOWED' or 'DENIED' entry at '%s'\n",
 428                         orig_str, tok);
 429                 SAFE_FREE(str);
 430                 TALLOC_FREE(frame);
 431                 return False;
 432         }
 433
 434         /* Only numeric form accepted for flags at present */
 435
 436         if (!next_token_talloc(frame, &cp, &tok, "/")) {
 437                 printf("ACE '%s': bad flags entry at '%s'\n",
 438                         orig_str, tok);
 439                 SAFE_FREE(str);
 440                 TALLOC_FREE(frame);
 441                 return False;
 442         }
 443
 444         if (tok[0] < '0' || tok[0] > '9') {
 445                 if (!parse_ace_flags(tok, &aflags)) {
 446                         printf("ACE '%s': bad named flags entry at '%s'\n",
 447                                 orig_str, tok);
 448                         SAFE_FREE(str);
 449                         TALLOC_FREE(frame);
 450                         return False;
 451                 }
 452         } else if (strnequal(tok, "0x", 2)) {
 453                 if (!sscanf(tok, "%x", &aflags)) {
 454                         printf("ACE '%s': bad hex flags entry at '%s'\n",
 455                                 orig_str, tok);
 456                         SAFE_FREE(str);
 457                         TALLOC_FREE(frame);
 458                         return False;
 459                 }
 460         } else {
 461                 if (!sscanf(tok, "%i", &aflags)) {
 462                         printf("ACE '%s': bad integer flags entry at '%s'\n",
 463                                 orig_str, tok);
 464                         SAFE_FREE(str);
 465                         TALLOC_FREE(frame);
 466                         return False;
 467                 }
 468         }
 469
 470         if (!next_token_talloc(frame, &cp, &tok, "/")) {
 471                 printf("ACE '%s': missing / at '%s'\n",
 472                         orig_str, tok);
 473                 SAFE_FREE(str);
 474                 TALLOC_FREE(frame);
 475                 return False;
 476         }
 477
 478         if (strncmp(tok, "0x", 2) == 0) {
 479                 if (sscanf(tok, "%i", &amask) != 1) {
 480                         printf("ACE '%s': bad hex number at '%s'\n",
 481                                 orig_str, tok);
 482                         SAFE_FREE(str);
 483                         TALLOC_FREE(frame);
 484                         return False;
 485                 }
 486                 goto done;
 487         }
 488
 489         for (v = standard_values; v->perm; v++) {
 490                 if (strcmp(tok, v->perm) == 0) {
 491                         amask = v->mask;
 492                         goto done;
 493                 }
 494         }
 495
 496         p = tok;
 497
 498         while(*p) {
 499                 bool found = False;
 500
 501                 for (v = special_values; v->perm; v++) {
 502                         if (v->perm[0] == *p) {
 503                                 amask |= v->mask;
 504                                 found = True;
 505                         }
 506                 }
 507
 508                 if (!found) {
 509                         printf("ACE '%s': bad permission value at '%s'\n",
 510                                 orig_str, p);
 511                         SAFE_FREE(str);
 512                         TALLOC_FREE(frame);
 513                         return False;
 514                 }
 515                 p++;
 516         }
 517
 518         if (*p) {
 519                 TALLOC_FREE(frame);
 520                 SAFE_FREE(str);
 521                 return False;
 522         }
 523
 524  done:
 525         mask = amask;
 526         init_sec_ace(ace, &sid, atype, mask, aflags);
 527         TALLOC_FREE(frame);
 528         SAFE_FREE(str);
 529         return True;
 530 }
 531
 532 /* add an ACE to a list of ACEs in a SEC_ACL */
 533 static bool add_ace(SEC_ACL **the_acl, struct security_ace *ace)
 534 {
 535         SEC_ACL *new_ace;
 536         struct security_ace *aces;
 537         if (! *the_acl) {
 538                 return (((*the_acl) = make_sec_acl(talloc_tos(), 3, 1, ace))
 539                         != NULL);
 540         }
 541
 542         if (!(aces = SMB_CALLOC_ARRAY(struct security_ace, 1+(*the_acl)->num_aces))) {
 543                 return False;
 544         }
 545         memcpy(aces, (*the_acl)->aces, (*the_acl)->num_aces * sizeof(struct
 546         security_ace));
 547         memcpy(aces+(*the_acl)->num_aces, ace, sizeof(struct security_ace));
 548         new_ace = make_sec_acl(talloc_tos(),(*the_acl)->revision,1+(*the_acl)->num_aces, aces);
 549         SAFE_FREE(aces);
 550         (*the_acl) = new_ace;
 551         return True;
 552 }
 553
 554 /* parse a ascii version of a security descriptor */
 555 static SEC_DESC *sec_desc_parse(TALLOC_CTX *ctx, struct cli_state *cli, char *str)
 556 {
 557         const char *p = str;
 558         char *tok;
 559         SEC_DESC *ret = NULL;
 560         size_t sd_size;
 561         DOM_SID *grp_sid=NULL, *owner_sid=NULL;
 562         SEC_ACL *dacl=NULL;
 563         int revision=1;
 564
 565         while (next_token_talloc(ctx, &p, &tok, "\t,\r\n")) {
 566                 if (strncmp(tok,"REVISION:", 9) == 0) {
 567                         revision = strtol(tok+9, NULL, 16);
 568                         continue;
 569                 }
 570
 571                 if (strncmp(tok,"OWNER:", 6) == 0) {
 572                         if (owner_sid) {
 573                                 printf("Only specify owner once\n");
 574                                 goto done;
 575                         }
 576                         owner_sid = SMB_CALLOC_ARRAY(DOM_SID, 1);
 577                         if (!owner_sid ||
 578                             !StringToSid(cli, owner_sid, tok+6)) {
 579                                 printf("Failed to parse owner sid\n");
 580                                 goto done;
 581                         }
 582                         continue;
 583                 }
 584
 585                 if (strncmp(tok,"GROUP:", 6) == 0) {
 586                         if (grp_sid) {
 587                                 printf("Only specify group once\n");
 588                                 goto done;
 589                         }
 590                         grp_sid = SMB_CALLOC_ARRAY(DOM_SID, 1);
 591                         if (!grp_sid ||
 592                             !StringToSid(cli, grp_sid, tok+6)) {
 593                                 printf("Failed to parse group sid\n");
 594                                 goto done;
 595                         }
 596                         continue;
 597                 }
 598
 599                 if (strncmp(tok,"ACL:", 4) == 0) {
 600                         struct security_ace ace;
 601                         if (!parse_ace(cli, &ace, tok+4)) {
 602                                 goto done;
 603                         }
 604                         if(!add_ace(&dacl, &ace)) {
 605                                 printf("Failed to add ACL %s\n", tok);
 606                                 goto done;
 607                         }
 608                         continue;
 609                 }
 610
 611                 printf("Failed to parse token '%s' in security descriptor,\n", tok);
 612                 goto done;
 613         }
 614
 615         ret = make_sec_desc(ctx,revision, SEC_DESC_SELF_RELATIVE, owner_sid, grp_sid,
 616                             NULL, dacl, &sd_size);
 617
 618   done:
 619         SAFE_FREE(grp_sid);
 620         SAFE_FREE(owner_sid);
 621
 622         return ret;
 623 }
 624
 625
 626 /* print a ascii version of a security descriptor on a FILE handle */
 627 static void sec_desc_print(struct cli_state *cli, FILE *f, SEC_DESC *sd)
 628 {
 629         fstring sidstr;
 630         uint32 i;
 631
 632         fprintf(f, "REVISION:%d\n", sd->revision);
 633         fprintf(f, "CONTROL:0x%x\n", sd->type);
 634
 635         /* Print owner and group sid */
 636
 637         if (sd->owner_sid) {
 638                 SidToString(cli, sidstr, sd->owner_sid);
 639         } else {
 640                 fstrcpy(sidstr, "");
 641         }
 642
 643         fprintf(f, "OWNER:%s\n", sidstr);
 644
 645         if (sd->group_sid) {
 646                 SidToString(cli, sidstr, sd->group_sid);
 647         } else {
 648                 fstrcpy(sidstr, "");
 649         }
 650
 651         fprintf(f, "GROUP:%s\n", sidstr);
 652
 653         /* Print aces */
 654         for (i = 0; sd->dacl && i < sd->dacl->num_aces; i++) {
 655                 struct security_ace *ace = &sd->dacl->aces[i];
 656                 fprintf(f, "ACL:");
 657                 print_ace(cli, f, ace);
 658                 fprintf(f, "\n");
 659         }
 660
 661 }
 662
 663 /*****************************************************
 664 get fileinfo for filename
 665 *******************************************************/
 666 static uint16 get_fileinfo(struct cli_state *cli, const char *filename)
 667 {
 668         uint16_t fnum = (uint16_t)-1;
 669         uint16 mode;
 670
 671         /* The desired access below is the only one I could find that works
 672            with NT4, W2KP and Samba */
 673
 674         if (!NT_STATUS_IS_OK(cli_ntcreate(cli, filename, 0, CREATE_ACCESS_READ,
 675                                           0, FILE_SHARE_READ|FILE_SHARE_WRITE,
 676                                           FILE_OPEN, 0x0, 0x0, &fnum))) {
 677                 printf("Failed to open %s: %s\n", filename, cli_errstr(cli));
 678         }
 679
 680         if (!cli_qfileinfo(cli, fnum, &mode, NULL, NULL, NULL,
 681                                              NULL, NULL, NULL)) {
 682                 printf("Failed to file info %s: %s\n", filename,
 683                                                        cli_errstr(cli));
 684         }
 685
 686         cli_close(cli, fnum);
 687
 688         return mode;
 689 }
 690
 691 /*****************************************************
 692 get sec desc for filename
 693 *******************************************************/
 694 static SEC_DESC *get_secdesc(struct cli_state *cli, const char *filename)
 695 {
 696         uint16_t fnum = (uint16_t)-1;
 697         SEC_DESC *sd;
 698
 699         /* The desired access below is the only one I could find that works
 700            with NT4, W2KP and Samba */
 701
 702         if (!NT_STATUS_IS_OK(cli_ntcreate(cli, filename, 0, CREATE_ACCESS_READ,
 703                                           0, FILE_SHARE_READ|FILE_SHARE_WRITE,
 704                                           FILE_OPEN, 0x0, 0x0, &fnum))) {
 705                 printf("Failed to open %s: %s\n", filename, cli_errstr(cli));
 706                 return NULL;
 707         }
 708
 709         sd = cli_query_secdesc(cli, fnum, talloc_tos());
 710
 711         cli_close(cli, fnum);
 712
 713         if (!sd) {
 714                 printf("Failed to get security descriptor\n");
 715                 return NULL;
 716         }
 717         return sd;
 718 }
 719
 720 /*****************************************************
 721 set sec desc for filename
 722 *******************************************************/
 723 static bool set_secdesc(struct cli_state *cli, const char *filename,
 724                         SEC_DESC *sd)
 725 {
 726         uint16_t fnum = (uint16_t)-1;
 727         bool result=true;
 728
 729         /* The desired access below is the only one I could find that works
 730            with NT4, W2KP and Samba */
 731
 732         if (!NT_STATUS_IS_OK(cli_ntcreate(cli, filename, 0,
 733                                           WRITE_DAC_ACCESS|WRITE_OWNER_ACCESS,
 734                                           0, FILE_SHARE_READ|FILE_SHARE_WRITE,
 735                                           FILE_OPEN, 0x0, 0x0, &fnum))) {
 736                 printf("Failed to open %s: %s\n", filename, cli_errstr(cli));
 737                 return false;
 738         }
 739
 740         if (!cli_set_secdesc(cli, fnum, sd)) {
 741                 printf("ERROR: security description set failed: %s\n",
 742                        cli_errstr(cli));
 743                 result=false;
 744         }
 745
 746         cli_close(cli, fnum);
 747         return result;
 748 }
 749
 750 /*****************************************************
 751 dump the acls for a file
 752 *******************************************************/
 753 static int cacl_dump(struct cli_state *cli, const char *filename)
 754 {
 755         int result = EXIT_FAILED;
 756         SEC_DESC *sd;
 757
 758         if (test_args)
 759                 return EXIT_OK;
 760
 761         sd = get_secdesc(cli, filename);
 762
 763         if (sd) {
 764                 if (sddl) {
 765                         printf("%s\n", sddl_encode(talloc_tos(), sd,
 766                                            get_global_sam_sid()));
 767                 } else {
 768                         sec_desc_print(cli, stdout, sd);
 769                 }
 770                 result = EXIT_OK;
 771         }
 772
 773         return result;
 774 }
 775
 776 /*****************************************************
 777 Change the ownership or group ownership of a file. Just
 778 because the NT docs say this can't be done :-). JRA.
 779 *******************************************************/
 780
 781 static int owner_set(struct cli_state *cli, enum chown_mode change_mode,
 782                         const char *filename, const char *new_username)
 783 {
 784         DOM_SID sid;
 785         SEC_DESC *sd, *old;
 786         size_t sd_size;
 787
 788         if (!StringToSid(cli, &sid, new_username))
 789                 return EXIT_PARSE_ERROR;
 790
 791         old = get_secdesc(cli, filename);
 792
 793         if (!old) {
 794                 return EXIT_FAILED;
 795         }
 796
 797         sd = make_sec_desc(talloc_tos(),old->revision, old->type,
 798                                 (change_mode == REQUEST_CHOWN) ? &sid : NULL,
 799                                 (change_mode == REQUEST_CHGRP) ? &sid : NULL,
 800                            NULL, NULL, &sd_size);
 801
 802         if (!set_secdesc(cli, filename, sd)) {
 803                 return EXIT_FAILED;
 804         }
 805
 806         return EXIT_OK;
 807 }
 808
 809
 810 /* The MSDN is contradictory over the ordering of ACE entries in an
 811    ACL.  However NT4 gives a "The information may have been modified
 812    by a computer running Windows NT 5.0" if denied ACEs do not appear
 813    before allowed ACEs. At
 814    http://technet.microsoft.com/en-us/library/cc781716.aspx the
 815    canonical order is specified as "Explicit Deny, Explicit Allow,
 816    Inherited ACEs unchanged" */
 817
 818 static int ace_compare(struct security_ace *ace1, struct security_ace *ace2)
 819 {
 820         if (sec_ace_equal(ace1, ace2))
 821                 return 0;
 822
 823         if ((ace1->flags & SEC_ACE_FLAG_INHERITED_ACE) &&
 824                         !(ace2->flags & SEC_ACE_FLAG_INHERITED_ACE))
 825                 return 1;
 826         if (!(ace1->flags & SEC_ACE_FLAG_INHERITED_ACE) &&
 827                         (ace2->flags & SEC_ACE_FLAG_INHERITED_ACE))
 828                 return -1;
 829         if ((ace1->flags & SEC_ACE_FLAG_INHERITED_ACE) &&
 830                         (ace2->flags & SEC_ACE_FLAG_INHERITED_ACE))
 831                 return ace1 - ace2;
 832
 833         if (ace1->type != ace2->type)
 834                 return ace2->type - ace1->type;
 835
 836         if (sid_compare(&ace1->trustee, &ace2->trustee))
 837                 return sid_compare(&ace1->trustee, &ace2->trustee);
 838
 839         if (ace1->flags != ace2->flags)
 840                 return ace1->flags - ace2->flags;
 841
 842         if (ace1->access_mask != ace2->access_mask)
 843                 return ace1->access_mask - ace2->access_mask;
 844
 845         if (ace1->size != ace2->size)
 846                 return ace1->size - ace2->size;
 847
 848         return memcmp(ace1, ace2, sizeof(struct security_ace));
 849 }
 850
 851 static void sort_acl(SEC_ACL *the_acl)
 852 {
 853         uint32 i;
 854         if (!the_acl) return;
 855
 856         TYPESAFE_QSORT(the_acl->aces, the_acl->num_aces, ace_compare);
 857
 858         for (i=1;i<the_acl->num_aces;) {
 859                 if (sec_ace_equal(&the_acl->aces[i-1], &the_acl->aces[i])) {
 860                         int j;
 861                         for (j=i; j<the_acl->num_aces-1; j++) {
 862                                 the_acl->aces[j] = the_acl->aces[j+1];
 863                         }
 864                         the_acl->num_aces--;
 865                 } else {
 866                         i++;
 867                 }
 868         }
 869 }
 870
 871 /*****************************************************
 872 set the ACLs on a file given an ascii description
 873 *******************************************************/
 874
 875 static int cacl_set(struct cli_state *cli, const char *filename,
 876                     char *the_acl, enum acl_mode mode)
 877 {
 878         SEC_DESC *sd, *old;
 879         uint32 i, j;
 880         size_t sd_size;
 881         int result = EXIT_OK;
 882
 883         if (sddl) {
 884                 sd = sddl_decode(talloc_tos(), the_acl, get_global_sam_sid());
 885         } else {
 886                 sd = sec_desc_parse(talloc_tos(), cli, the_acl);
 887         }
 888
 889         if (!sd) return EXIT_PARSE_ERROR;
 890         if (test_args) return EXIT_OK;
 891
 892         old = get_secdesc(cli, filename);
 893
 894         if (!old) {
 895                 return EXIT_FAILED;
 896         }
 897
 898         /* the logic here is rather more complex than I would like */
 899         switch (mode) {
 900         case SMB_ACL_DELETE:
 901                 for (i=0;sd->dacl && i<sd->dacl->num_aces;i++) {
 902                         bool found = False;
 903
 904                         for (j=0;old->dacl && j<old->dacl->num_aces;j++) {
 905                                 if (sec_ace_equal(&sd->dacl->aces[i],
 906                                                   &old->dacl->aces[j])) {
 907                                         uint32 k;
 908                                         for (k=j; k<old->dacl->num_aces-1;k++) {
 909                                                 old->dacl->aces[k] = old->dacl->aces[k+1];
 910                                         }
 911                                         old->dacl->num_aces--;
 912                                         found = True;
 913                                         break;
 914                                 }
 915                         }
 916
 917                         if (!found) {
 918                                 printf("ACL for ACE:");
 919                                 print_ace(cli, stdout, &sd->dacl->aces[i]);
 920                                 printf(" not found\n");
 921                         }
 922                 }
 923                 break;
 924
 925         case SMB_ACL_MODIFY:
 926                 for (i=0;sd->dacl && i<sd->dacl->num_aces;i++) {
 927                         bool found = False;
 928
 929                         for (j=0;old->dacl && j<old->dacl->num_aces;j++) {
 930                                 if (sid_equal(&sd->dacl->aces[i].trustee,
 931                                               &old->dacl->aces[j].trustee)) {
 932                                         old->dacl->aces[j] = sd->dacl->aces[i];
 933                                         found = True;
 934                                 }
 935                         }
 936
 937                         if (!found) {
 938                                 fstring str;
 939
 940                                 SidToString(cli, str,
 941                                             &sd->dacl->aces[i].trustee);
 942                                 printf("ACL for SID %s not found\n", str);
 943                         }
 944                 }
 945
 946                 if (sd->owner_sid) {
 947                         old->owner_sid = sd->owner_sid;
 948                 }
 949
 950                 if (sd->group_sid) {
 951                         old->group_sid = sd->group_sid;
 952                 }
 953
 954                 break;
 955
 956         case SMB_ACL_ADD:
 957                 for (i=0;sd->dacl && i<sd->dacl->num_aces;i++) {
 958                         add_ace(&old->dacl, &sd->dacl->aces[i]);
 959                 }
 960                 break;
 961
 962         case SMB_ACL_SET:
 963                 old = sd;
 964                 break;
 965         }
 966
 967         /* Denied ACE entries must come before allowed ones */
 968         sort_acl(old->dacl);
 969
 970         /* Create new security descriptor and set it */
 971
 972         /* We used to just have "WRITE_DAC_ACCESS" without WRITE_OWNER.
 973            But if we're sending an owner, even if it's the same as the one
 974            that already exists then W2K3 insists we open with WRITE_OWNER access.
 975            I need to check that setting a SD with no owner set works against WNT
 976            and W2K. JRA.
 977         */
 978
 979         sd = make_sec_desc(talloc_tos(),old->revision, old->type,
 980                            old->owner_sid, old->group_sid,
 981                            NULL, old->dacl, &sd_size);
 982
 983         if (!set_secdesc(cli, filename, sd)) {
 984                 result = EXIT_FAILED;
 985         }
 986
 987         return result;
 988 }
 989
 990 /*****************************************************
 991 set the inherit on a file
 992 *******************************************************/
 993 static int inherit(struct cli_state *cli, const char *filename,
 994                    const char *type)
 995 {
 996         SEC_DESC *old,*sd;
 997         uint32 oldattr;
 998         size_t sd_size;
 999         int result = EXIT_OK;
1000
1001         old = get_secdesc(cli, filename);
1002
1003         if (!old) {
1004                 return EXIT_FAILED;
1005         }
1006
1007         oldattr = get_fileinfo(cli,filename);
1008
1009         if (strcmp(type,"allow")==0) {
1010                 if ((old->type & SEC_DESC_DACL_PROTECTED) ==
1011                     SEC_DESC_DACL_PROTECTED) {
1012                         int i;
1013                         char *parentname,*temp;
1014                         SEC_DESC *parent;
1015                         temp = talloc_strdup(talloc_tos(), filename);
1016
1017                         old->type=old->type & (~SEC_DESC_DACL_PROTECTED);
1018
1019                         /* look at parent and copy in all its inheritable ACL's. */
1020                         string_replace(temp, '\\', '/');
1021                         if (!parent_dirname(talloc_tos(),temp,&parentname,NULL)) {
1022                                 return EXIT_FAILED;
1023                         }
1024                         string_replace(parentname, '/', '\\');
1025                         parent = get_secdesc(cli,parentname);
1026                         for (i=0;i<parent->dacl->num_aces;i++) {
1027                                 struct security_ace *ace=&parent->dacl->aces[i];
1028                                 if ((oldattr & aDIR) == aDIR) {
1029                                         if ((ace->flags & SEC_ACE_FLAG_CONTAINER_INHERIT) ==
1030                                             SEC_ACE_FLAG_CONTAINER_INHERIT) {
1031                                                 add_ace(&old->dacl, ace);
1032                                         }
1033                                 } else {
1034                                         if ((ace->flags & SEC_ACE_FLAG_OBJECT_INHERIT) ==
1035                                             SEC_ACE_FLAG_OBJECT_INHERIT) {
1036                                                 add_ace(&old->dacl, ace);
1037                                         }
1038                                 }
1039                         }
1040                 } else {
1041                         printf("Already set to inheritable permissions.\n");
1042                         return EXIT_FAILED;
1043                 }
1044         } else if (strcmp(type,"remove")==0) {
1045                 if ((old->type & SEC_DESC_DACL_PROTECTED) !=
1046                     SEC_DESC_DACL_PROTECTED) {
1047                         old->type=old->type | SEC_DESC_DACL_PROTECTED;
1048
1049                         /* remove all inherited ACL's. */
1050                         if (old->dacl) {
1051                                 int i;
1052                                 SEC_ACL *temp=old->dacl;
1053                                 old->dacl=make_sec_acl(talloc_tos(), 3, 0, NULL);
1054                                 for (i=temp->num_aces-1;i>=0;i--) {
1055                                         struct security_ace *ace=&temp->aces[i];
1056                                         /* Remove all ace with INHERITED flag set */
1057                                         if ((ace->flags & SEC_ACE_FLAG_INHERITED_ACE) !=
1058                                             SEC_ACE_FLAG_INHERITED_ACE) {
1059                                                 add_ace(&old->dacl,ace);
1060                                         }
1061                                 }
1062                         }
1063                 } else {
1064                         printf("Already set to no inheritable permissions.\n");
1065                         return EXIT_FAILED;
1066                 }
1067         } else if (strcmp(type,"copy")==0) {
1068                 if ((old->type & SEC_DESC_DACL_PROTECTED) !=
1069                     SEC_DESC_DACL_PROTECTED) {
1070                         old->type=old->type | SEC_DESC_DACL_PROTECTED;
1071
1072                         /* convert all inherited ACL's to non inherated ACL's. */
1073                         if (old->dacl) {
1074                                 int i;
1075                                 for (i=0;i<old->dacl->num_aces;i++) {
1076                                         struct security_ace *ace=&old->dacl->aces[i];
1077                                         /* Remove INHERITED FLAG from all aces */
1078                                         ace->flags=ace->flags&(~SEC_ACE_FLAG_INHERITED_ACE);
1079                                 }
1080                         }
1081                 } else {
1082                         printf("Already set to no inheritable permissions.\n");
1083                         return EXIT_FAILED;
1084                 }
1085         }
1086
1087         /* Denied ACE entries must come before allowed ones */
1088         sort_acl(old->dacl);
1089
1090         sd = make_sec_desc(talloc_tos(),old->revision, old->type,
1091                            old->owner_sid, old->group_sid,
1092                            NULL, old->dacl, &sd_size);
1093
1094         if (!set_secdesc(cli, filename, sd)) {
1095                 result = EXIT_FAILED;
1096         }
1097
1098         return result;
1099 }
1100
1101 /*****************************************************
1102  Return a connection to a server.
1103 *******************************************************/
1104 static struct cli_state *connect_one(struct user_auth_info *auth_info,
1105                                      const char *server, const char *share)
1106 {
1107         struct cli_state *c = NULL;
1108         struct sockaddr_storage ss;
1109         NTSTATUS nt_status;
1110         uint32_t flags = 0;
1111
1112         zero_sockaddr(&ss);
1113
1114         if (get_cmdline_auth_info_use_kerberos(auth_info)) {
1115                 flags |= CLI_FULL_CONNECTION_USE_KERBEROS |
1116                          CLI_FULL_CONNECTION_FALLBACK_AFTER_KERBEROS;
1117         }
1118
1119         if (get_cmdline_auth_info_use_machine_account(auth_info) &&
1120             !set_cmdline_auth_info_machine_account_creds(auth_info)) {
1121                 return NULL;
1122         }
1123
1124         set_cmdline_auth_info_getpass(auth_info);
1125
1126         nt_status = cli_full_connection(&c, global_myname(), server,
1127                                 &ss, 0,
1128                                 share, "?????",
1129                                 get_cmdline_auth_info_username(auth_info),
1130                                 lp_workgroup(),
1131                                 get_cmdline_auth_info_password(auth_info),
1132                                 flags,
1133                                 get_cmdline_auth_info_signing_state(auth_info),
1134                                 NULL);
1135         if (!NT_STATUS_IS_OK(nt_status)) {
1136                 DEBUG(0,("cli_full_connection failed! (%s)\n", nt_errstr(nt_status)));
1137                 return NULL;
1138         }
1139
1140         if (get_cmdline_auth_info_smb_encrypt(auth_info)) {
1141                 nt_status = cli_cm_force_encryption(c,
1142                                         get_cmdline_auth_info_username(auth_info),
1143                                         get_cmdline_auth_info_password(auth_info),
1144                                         lp_workgroup(),
1145                                         share);
1146                 if (!NT_STATUS_IS_OK(nt_status)) {
1147                         cli_shutdown(c);
1148                         c = NULL;
1149                 }
1150         }
1151
1152         return c;
1153 }
1154
1155 /****************************************************************************
1156   main program
1157 ****************************************************************************/
1158  int main(int argc, const char *argv[])
1159 {
1160         char *share;
1161         int opt;
1162         enum acl_mode mode = SMB_ACL_SET;
1163         static char *the_acl = NULL;
1164         enum chown_mode change_mode = REQUEST_NONE;
1165         int result;
1166         char *path;
1167         char *filename = NULL;
1168         poptContext pc;
1169         struct poptOption long_options[] = {
1170                 POPT_AUTOHELP
1171                 { "delete", 'D', POPT_ARG_STRING, NULL, 'D', "Delete an acl", "ACL" },
1172                 { "modify", 'M', POPT_ARG_STRING, NULL, 'M', "Modify an acl", "ACL" },
1173                 { "add", 'a', POPT_ARG_STRING, NULL, 'a', "Add an acl", "ACL" },
1174                 { "set", 'S', POPT_ARG_STRING, NULL, 'S', "Set acls", "ACLS" },
1175                 { "chown", 'C', POPT_ARG_STRING, NULL, 'C', "Change ownership of a file", "USERNAME" },
1176                 { "chgrp", 'G', POPT_ARG_STRING, NULL, 'G', "Change group ownership of a file", "GROUPNAME" },
1177                 { "inherit", 'I', POPT_ARG_STRING, NULL, 'I', "Inherit allow|remove|copy" },
1178                 { "numeric", 0, POPT_ARG_NONE, &numeric, 1, "Don't resolve sids or masks to names" },
1179                 { "sddl", 0, POPT_ARG_NONE, &sddl, 1, "Output and input acls in sddl format" },
1180                 { "test-args", 't', POPT_ARG_NONE, &test_args, 1, "Test arguments"},
1181                 POPT_COMMON_SAMBA
1182                 POPT_COMMON_CONNECTION
1183                 POPT_COMMON_CREDENTIALS
1184                 POPT_TABLEEND
1185         };
1186
1187         struct cli_state *cli;
1188         TALLOC_CTX *frame = talloc_stackframe();
1189         const char *owner_username = "";
1190         char *server;
1191         struct user_auth_info *auth_info;
1192
1193         load_case_tables();
1194
1195
1196         /* set default debug level to 1 regardless of what smb.conf sets */
1197         setup_logging( "smbcacls", True );
1198         DEBUGLEVEL_CLASS[DBGC_ALL] = 1;
1199         dbf = x_stderr;
1200         x_setbuf( x_stderr, NULL );
1201         AllowDebugChange = false;
1202
1203         setlinebuf(stdout);
1204
1205         lp_load(get_dyn_CONFIGFILE(),True,False,False,True);
1206         load_interfaces();
1207
1208         auth_info = user_auth_info_init(frame);
1209         if (auth_info == NULL) {
1210                 exit(1);
1211         }
1212         popt_common_set_auth_info(auth_info);
1213
1214         pc = poptGetContext("smbcacls", argc, argv, long_options, 0);
1215
1216         poptSetOtherOptionHelp(pc, "//server1/share1 filename\nACLs look like: "
1217                 "'ACL:user:[ALLOWED|DENIED]/flags/permissions'");
1218
1219         while ((opt = poptGetNextOpt(pc)) != -1) {
1220                 switch (opt) {
1221                 case 'S':
1222                         the_acl = smb_xstrdup(poptGetOptArg(pc));
1223                         mode = SMB_ACL_SET;
1224                         break;
1225
1226                 case 'D':
1227                         the_acl = smb_xstrdup(poptGetOptArg(pc));
1228                         mode = SMB_ACL_DELETE;
1229                         break;
1230
1231                 case 'M':
1232                         the_acl = smb_xstrdup(poptGetOptArg(pc));
1233                         mode = SMB_ACL_MODIFY;
1234                         break;
1235
1236                 case 'a':
1237                         the_acl = smb_xstrdup(poptGetOptArg(pc));
1238                         mode = SMB_ACL_ADD;
1239                         break;
1240
1241                 case 'C':
1242                         owner_username = poptGetOptArg(pc);
1243                         change_mode = REQUEST_CHOWN;
1244                         break;
1245
1246                 case 'G':
1247                         owner_username = poptGetOptArg(pc);
1248                         change_mode = REQUEST_CHGRP;
1249                         break;
1250
1251                 case 'I':
1252                         owner_username = poptGetOptArg(pc);
1253                         change_mode = REQUEST_INHERIT;
1254                         break;
1255                 }
1256         }
1257
1258         /* Make connection to server */
1259         if(!poptPeekArg(pc)) {
1260                 poptPrintUsage(pc, stderr, 0);
1261                 return -1;
1262         }
1263
1264         path = talloc_strdup(frame, poptGetArg(pc));
1265         if (!path) {
1266                 return -1;
1267         }
1268
1269         if(!poptPeekArg(pc)) {
1270                 poptPrintUsage(pc, stderr, 0);
1271                 return -1;
1272         }
1273
1274         filename = talloc_strdup(frame, poptGetArg(pc));
1275         if (!filename) {
1276                 return -1;
1277         }
1278
1279         string_replace(path,'/','\\');
1280
1281         server = talloc_strdup(frame, path+2);
1282         if (!server) {
1283                 return -1;
1284         }
1285         share = strchr_m(server,'\\');
1286         if (!share) {
1287                 printf("Invalid argument: %s\n", share);
1288                 return -1;
1289         }
1290
1291         *share = 0;
1292         share++;
1293
1294         if (!test_args) {
1295                 cli = connect_one(auth_info, server, share);
1296                 if (!cli) {
1297                         exit(EXIT_FAILED);
1298                 }
1299         } else {
1300                 exit(0);
1301         }
1302
1303         string_replace(filename, '/', '\\');
1304         if (filename[0] != '\\') {
1305                 filename = talloc_asprintf(frame,
1306                                 "\\%s",
1307                                 filename);
1308                 if (!filename) {
1309                         return -1;
1310                 }
1311         }
1312
1313         /* Perform requested action */
1314
1315         if (change_mode == REQUEST_INHERIT) {
1316                 result = inherit(cli, filename, owner_username);
1317         } else if (change_mode != REQUEST_NONE) {
1318                 result = owner_set(cli, change_mode, filename, owner_username);
1319         } else if (the_acl) {
1320                 result = cacl_set(cli, filename, the_acl, mode);
1321         } else {
1322                 result = cacl_dump(cli, filename);
1323         }
1324
1325         TALLOC_FREE(frame);
1326
1327         return result;
1328 }