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