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 #include "rpc_client/cli_lsarpc.h"
  27
  28 extern bool AllowDebugChange;
  29
  30 static int test_args;
  31
  32 #define CREATE_ACCESS_READ READ_CONTROL_ACCESS
  33
  34 /* numeric is set when the user wants numeric SIDs and ACEs rather
  35    than going via LSA calls to resolve them */
  36 static int numeric;
  37
  38 static int sddl;
  39
  40 enum acl_mode {SMB_ACL_SET, SMB_ACL_DELETE, SMB_ACL_MODIFY, SMB_ACL_ADD };
  41 enum chown_mode {REQUEST_NONE, REQUEST_CHOWN, REQUEST_CHGRP, REQUEST_INHERIT};
  42 enum exit_values {EXIT_OK, EXIT_FAILED, EXIT_PARSE_ERROR};
  43
  44 struct perm_value {
  45         const char *perm;
  46         uint32 mask;
  47 };
  48
  49 /* These values discovered by inspection */
  50
  51 static const struct perm_value special_values[] = {
  52         { "R", 0x00120089 },
  53         { "W", 0x00120116 },
  54         { "X", 0x001200a0 },
  55         { "D", 0x00010000 },
  56         { "P", 0x00040000 },
  57         { "O", 0x00080000 },
  58         { NULL, 0 },
  59 };
  60
  61 static const struct perm_value standard_values[] = {
  62         { "READ",   0x001200a9 },
  63         { "CHANGE", 0x001301bf },
  64         { "FULL",   0x001f01ff },
  65         { NULL, 0 },
  66 };
  67
  68 /* Open cli connection and policy handle */
  69
  70 static NTSTATUS cli_lsa_lookup_sid(struct cli_state *cli,
  71                                    const struct dom_sid *sid,
  72                                    TALLOC_CTX *mem_ctx,
  73                                    enum lsa_SidType *type,
  74                                    char **domain, char **name)
  75 {
  76         uint16 orig_cnum = cli->cnum;
  77         struct rpc_pipe_client *p = NULL;
  78         struct policy_handle handle;
  79         NTSTATUS status;
  80         TALLOC_CTX *frame = talloc_stackframe();
  81         enum lsa_SidType *types;
  82         char **domains;
  83         char **names;
  84
  85         status = cli_tcon_andx(cli, "IPC$", "?????", "", 0);
  86         if (!NT_STATUS_IS_OK(status)) {
  87                 return status;
  88         }
  89
  90         status = cli_rpc_pipe_open_noauth(cli, &ndr_table_lsarpc.syntax_id,
  91                                           &p);
  92         if (!NT_STATUS_IS_OK(status)) {
  93                 goto fail;
  94         }
  95
  96         status = rpccli_lsa_open_policy(p, talloc_tos(), True,
  97                                         GENERIC_EXECUTE_ACCESS, &handle);
  98         if (!NT_STATUS_IS_OK(status)) {
  99                 goto fail;
 100         }
 101
 102         status = rpccli_lsa_lookup_sids(p, talloc_tos(), &handle, 1, sid,
 103                                         &domains, &names, &types);
 104         if (!NT_STATUS_IS_OK(status)) {
 105                 goto fail;
 106         }
 107
 108         *type = types[0];
 109         *domain = talloc_move(mem_ctx, &domains[0]);
 110         *name = talloc_move(mem_ctx, &names[0]);
 111
 112         status = NT_STATUS_OK;
 113  fail:
 114         TALLOC_FREE(p);
 115         cli_tdis(cli);
 116         cli->cnum = orig_cnum;
 117         TALLOC_FREE(frame);
 118         return status;
 119 }
 120
 121 static NTSTATUS cli_lsa_lookup_name(struct cli_state *cli,
 122                                     const char *name,
 123                                     enum lsa_SidType *type,
 124                                     struct dom_sid *sid)
 125 {
 126         uint16 orig_cnum = cli->cnum;
 127         struct rpc_pipe_client *p;
 128         struct policy_handle handle;
 129         NTSTATUS status;
 130         TALLOC_CTX *frame = talloc_stackframe();
 131         struct dom_sid *sids;
 132         enum lsa_SidType *types;
 133
 134         status = cli_tcon_andx(cli, "IPC$", "?????", "", 0);
 135         if (!NT_STATUS_IS_OK(status)) {
 136                 return status;
 137         }
 138
 139         status = cli_rpc_pipe_open_noauth(cli, &ndr_table_lsarpc.syntax_id,
 140                                           &p);
 141         if (!NT_STATUS_IS_OK(status)) {
 142                 goto fail;
 143         }
 144
 145         status = rpccli_lsa_open_policy(p, talloc_tos(), True,
 146                                         GENERIC_EXECUTE_ACCESS, &handle);
 147         if (!NT_STATUS_IS_OK(status)) {
 148                 goto fail;
 149         }
 150
 151         status = rpccli_lsa_lookup_names(p, talloc_tos(), &handle, 1, &name,
 152                                          NULL, 1, &sids, &types);
 153         if (!NT_STATUS_IS_OK(status)) {
 154                 goto fail;
 155         }
 156
 157         *type = types[0];
 158         *sid = sids[0];
 159
 160         status = NT_STATUS_OK;
 161  fail:
 162         TALLOC_FREE(p);
 163         cli_tdis(cli);
 164         cli->cnum = orig_cnum;
 165         TALLOC_FREE(frame);
 166         return status;
 167 }
 168
 169 /* convert a SID to a string, either numeric or username/group */
 170 static void SidToString(struct cli_state *cli, fstring str, const struct dom_sid *sid)
 171 {
 172         char *domain = NULL;
 173         char *name = NULL;
 174         enum lsa_SidType type;
 175         NTSTATUS status;
 176
 177         sid_to_fstring(str, sid);
 178
 179         if (numeric) {
 180                 return;
 181         }
 182
 183         status = cli_lsa_lookup_sid(cli, sid, talloc_tos(), &type,
 184                                     &domain, &name);
 185
 186         if (!NT_STATUS_IS_OK(status)) {
 187                 return;
 188         }
 189
 190         if (*domain) {
 191                 slprintf(str, sizeof(fstring) - 1, "%s%s%s",
 192                         domain, lp_winbind_separator(), name);
 193         } else {
 194                 fstrcpy(str, name);
 195         }
 196 }
 197
 198 /* convert a string to a SID, either numeric or username/group */
 199 static bool StringToSid(struct cli_state *cli, struct dom_sid *sid, const char *str)
 200 {
 201         enum lsa_SidType type;
 202
 203         if (strncmp(str, "S-", 2) == 0) {
 204                 return string_to_sid(sid, str);
 205         }
 206
 207         return NT_STATUS_IS_OK(cli_lsa_lookup_name(cli, str, &type, sid));
 208 }
 209
 210 static void print_ace_flags(FILE *f, uint8_t flags)
 211 {
 212         char *str = talloc_strdup(NULL, "");
 213
 214         if (!str) {
 215                 goto out;
 216         }
 217
 218         if (flags & SEC_ACE_FLAG_OBJECT_INHERIT) {
 219                 str = talloc_asprintf(str, "%s%s",
 220                                 str, "OI|");
 221                 if (!str) {
 222                         goto out;
 223                 }
 224         }
 225         if (flags & SEC_ACE_FLAG_CONTAINER_INHERIT) {
 226                 str = talloc_asprintf(str, "%s%s",
 227                                 str, "CI|");
 228                 if (!str) {
 229                         goto out;
 230                 }
 231         }
 232         if (flags & SEC_ACE_FLAG_NO_PROPAGATE_INHERIT) {
 233                 str = talloc_asprintf(str, "%s%s",
 234                                 str, "NP|");
 235                 if (!str) {
 236                         goto out;
 237                 }
 238         }
 239         if (flags & SEC_ACE_FLAG_INHERIT_ONLY) {
 240                 str = talloc_asprintf(str, "%s%s",
 241                                 str, "IO|");
 242                 if (!str) {
 243                         goto out;
 244                 }
 245         }
 246         if (flags & SEC_ACE_FLAG_INHERITED_ACE) {
 247                 str = talloc_asprintf(str, "%s%s",
 248                                 str, "I|");
 249                 if (!str) {
 250                         goto out;
 251                 }
 252         }
 253         /* Ignore define SEC_ACE_FLAG_SUCCESSFUL_ACCESS ( 0x40 )
 254            and SEC_ACE_FLAG_FAILED_ACCESS ( 0x80 ) as they're
 255            audit ace flags. */
 256
 257         if (str[strlen(str)-1] == '|') {
 258                 str[strlen(str)-1] = '\0';
 259                 fprintf(f, "/%s/", str);
 260         } else {
 261                 fprintf(f, "/0x%x/", flags);
 262         }
 263         TALLOC_FREE(str);
 264         return;
 265
 266   out:
 267         fprintf(f, "/0x%x/", flags);
 268 }
 269
 270 /* print an ACE on a FILE, using either numeric or ascii representation */
 271 static void print_ace(struct cli_state *cli, FILE *f, struct security_ace *ace)
 272 {
 273         const struct perm_value *v;
 274         fstring sidstr;
 275         int do_print = 0;
 276         uint32 got_mask;
 277
 278         SidToString(cli, sidstr, &ace->trustee);
 279
 280         fprintf(f, "%s:", sidstr);
 281
 282         if (numeric) {
 283                 fprintf(f, "%d/0x%x/0x%08x",
 284                         ace->type, ace->flags, ace->access_mask);
 285                 return;
 286         }
 287
 288         /* Ace type */
 289
 290         if (ace->type == SEC_ACE_TYPE_ACCESS_ALLOWED) {
 291                 fprintf(f, "ALLOWED");
 292         } else if (ace->type == SEC_ACE_TYPE_ACCESS_DENIED) {
 293                 fprintf(f, "DENIED");
 294         } else {
 295                 fprintf(f, "%d", ace->type);
 296         }
 297
 298         print_ace_flags(f, ace->flags);
 299
 300         /* Standard permissions */
 301
 302         for (v = standard_values; v->perm; v++) {
 303                 if (ace->access_mask == v->mask) {
 304                         fprintf(f, "%s", v->perm);
 305                         return;
 306                 }
 307         }
 308
 309         /* Special permissions.  Print out a hex value if we have
 310            leftover bits in the mask. */
 311
 312         got_mask = ace->access_mask;
 313
 314  again:
 315         for (v = special_values; v->perm; v++) {
 316                 if ((ace->access_mask & v->mask) == v->mask) {
 317                         if (do_print) {
 318                                 fprintf(f, "%s", v->perm);
 319                         }
 320                         got_mask &= ~v->mask;
 321                 }
 322         }
 323
 324         if (!do_print) {
 325                 if (got_mask != 0) {
 326                         fprintf(f, "0x%08x", ace->access_mask);
 327                 } else {
 328                         do_print = 1;
 329                         goto again;
 330                 }
 331         }
 332 }
 333
 334 static bool parse_ace_flags(const char *str, unsigned int *pflags)
 335 {
 336         const char *p = str;
 337         *pflags = 0;
 338
 339         while (*p) {
 340                 if (strnequal(p, "OI", 2)) {
 341                         *pflags |= SEC_ACE_FLAG_OBJECT_INHERIT;
 342                         p += 2;
 343                 } else if (strnequal(p, "CI", 2)) {
 344                         *pflags |= SEC_ACE_FLAG_CONTAINER_INHERIT;
 345                         p += 2;
 346                 } else if (strnequal(p, "NP", 2)) {
 347                         *pflags |= SEC_ACE_FLAG_NO_PROPAGATE_INHERIT;
 348                         p += 2;
 349                 } else if (strnequal(p, "IO", 2)) {
 350                         *pflags |= SEC_ACE_FLAG_INHERIT_ONLY;
 351                         p += 2;
 352                 } else if (*p == 'I') {
 353                         *pflags |= SEC_ACE_FLAG_INHERITED_ACE;
 354                         p += 1;
 355                 } else if (*p) {
 356                         return false;
 357                 }
 358
 359                 if (*p != '|' && *p != '\0') {
 360                         return false;
 361                 }
 362         }
 363         return true;
 364 }
 365
 366 /* parse an ACE in the same format as print_ace() */
 367 static bool parse_ace(struct cli_state *cli, struct security_ace *ace,
 368                       const char *orig_str)
 369 {
 370         char *p;
 371         const char *cp;
 372         char *tok;
 373         unsigned int atype = 0;
 374         unsigned int aflags = 0;
 375         unsigned int amask = 0;
 376         struct dom_sid sid;
 377         uint32_t mask;
 378         const struct perm_value *v;
 379         char *str = SMB_STRDUP(orig_str);
 380         TALLOC_CTX *frame = talloc_stackframe();
 381
 382         if (!str) {
 383                 TALLOC_FREE(frame);
 384                 return False;
 385         }
 386
 387         ZERO_STRUCTP(ace);
 388         p = strchr_m(str,':');
 389         if (!p) {
 390                 printf("ACE '%s': missing ':'.\n", orig_str);
 391                 SAFE_FREE(str);
 392                 TALLOC_FREE(frame);
 393                 return False;
 394         }
 395         *p = '\0';
 396         p++;
 397         /* Try to parse numeric form */
 398
 399         if (sscanf(p, "%i/%i/%i", &atype, &aflags, &amask) == 3 &&
 400             StringToSid(cli, &sid, str)) {
 401                 goto done;
 402         }
 403
 404         /* Try to parse text form */
 405
 406         if (!StringToSid(cli, &sid, str)) {
 407                 printf("ACE '%s': failed to convert '%s' to SID\n",
 408                         orig_str, str);
 409                 SAFE_FREE(str);
 410                 TALLOC_FREE(frame);
 411                 return False;
 412         }
 413
 414         cp = p;
 415         if (!next_token_talloc(frame, &cp, &tok, "/")) {
 416                 printf("ACE '%s': failed to find '/' character.\n",
 417                         orig_str);
 418                 SAFE_FREE(str);
 419                 TALLOC_FREE(frame);
 420                 return False;
 421         }
 422
 423         if (strncmp(tok, "ALLOWED", strlen("ALLOWED")) == 0) {
 424                 atype = SEC_ACE_TYPE_ACCESS_ALLOWED;
 425         } else if (strncmp(tok, "DENIED", strlen("DENIED")) == 0) {
 426                 atype = SEC_ACE_TYPE_ACCESS_DENIED;
 427         } else {
 428                 printf("ACE '%s': missing 'ALLOWED' or 'DENIED' entry at '%s'\n",
 429                         orig_str, tok);
 430                 SAFE_FREE(str);
 431                 TALLOC_FREE(frame);
 432                 return False;
 433         }
 434
 435         /* Only numeric form accepted for flags at present */
 436
 437         if (!next_token_talloc(frame, &cp, &tok, "/")) {
 438                 printf("ACE '%s': bad flags entry at '%s'\n",
 439                         orig_str, tok);
 440                 SAFE_FREE(str);
 441                 TALLOC_FREE(frame);
 442                 return False;
 443         }
 444
 445         if (tok[0] < '0' || tok[0] > '9') {
 446                 if (!parse_ace_flags(tok, &aflags)) {
 447                         printf("ACE '%s': bad named flags entry at '%s'\n",
 448                                 orig_str, tok);
 449                         SAFE_FREE(str);
 450                         TALLOC_FREE(frame);
 451                         return False;
 452                 }
 453         } else if (strnequal(tok, "0x", 2)) {
 454                 if (!sscanf(tok, "%x", &aflags)) {
 455                         printf("ACE '%s': bad hex flags entry at '%s'\n",
 456                                 orig_str, tok);
 457                         SAFE_FREE(str);
 458                         TALLOC_FREE(frame);
 459                         return False;
 460                 }
 461         } else {
 462                 if (!sscanf(tok, "%i", &aflags)) {
 463                         printf("ACE '%s': bad integer flags entry at '%s'\n",
 464                                 orig_str, tok);
 465                         SAFE_FREE(str);
 466                         TALLOC_FREE(frame);
 467                         return False;
 468                 }
 469         }
 470
 471         if (!next_token_talloc(frame, &cp, &tok, "/")) {
 472                 printf("ACE '%s': missing / at '%s'\n",
 473                         orig_str, tok);
 474                 SAFE_FREE(str);
 475                 TALLOC_FREE(frame);
 476                 return False;
 477         }
 478
 479         if (strncmp(tok, "0x", 2) == 0) {
 480                 if (sscanf(tok, "%i", &amask) != 1) {
 481                         printf("ACE '%s': bad hex number at '%s'\n",
 482                                 orig_str, tok);
 483                         SAFE_FREE(str);
 484                         TALLOC_FREE(frame);
 485                         return False;
 486                 }
 487                 goto done;
 488         }
 489
 490         for (v = standard_values; v->perm; v++) {
 491                 if (strcmp(tok, v->perm) == 0) {
 492                         amask = v->mask;
 493                         goto done;
 494                 }
 495         }
 496
 497         p = tok;
 498
 499         while(*p) {
 500                 bool found = False;
 501
 502                 for (v = special_values; v->perm; v++) {
 503                         if (v->perm[0] == *p) {
 504                                 amask |= v->mask;
 505                                 found = True;
 506                         }
 507                 }
 508
 509                 if (!found) {
 510                         printf("ACE '%s': bad permission value at '%s'\n",
 511                                 orig_str, p);
 512                         SAFE_FREE(str);
 513                         TALLOC_FREE(frame);
 514                         return False;
 515                 }
 516                 p++;
 517         }
 518
 519         if (*p) {
 520                 TALLOC_FREE(frame);
 521                 SAFE_FREE(str);
 522                 return False;
 523         }
 524
 525  done:
 526         mask = amask;
 527         init_sec_ace(ace, &sid, atype, mask, aflags);
 528         TALLOC_FREE(frame);
 529         SAFE_FREE(str);
 530         return True;
 531 }
 532
 533 /* add an ACE to a list of ACEs in a struct security_acl */
 534 static bool add_ace(struct security_acl **the_acl, struct security_ace *ace)
 535 {
 536         struct security_acl *new_ace;
 537         struct security_ace *aces;
 538         if (! *the_acl) {
 539                 return (((*the_acl) = make_sec_acl(talloc_tos(), 3, 1, ace))
 540                         != NULL);
 541         }
 542
 543         if (!(aces = SMB_CALLOC_ARRAY(struct security_ace, 1+(*the_acl)->num_aces))) {
 544                 return False;
 545         }
 546         memcpy(aces, (*the_acl)->aces, (*the_acl)->num_aces * sizeof(struct
 547         security_ace));
 548         memcpy(aces+(*the_acl)->num_aces, ace, sizeof(struct security_ace));
 549         new_ace = make_sec_acl(talloc_tos(),(*the_acl)->revision,1+(*the_acl)->num_aces, aces);
 550         SAFE_FREE(aces);
 551         (*the_acl) = new_ace;
 552         return True;
 553 }
 554
 555 /* parse a ascii version of a security descriptor */
 556 static struct security_descriptor *sec_desc_parse(TALLOC_CTX *ctx, struct cli_state *cli, char *str)
 557 {
 558         const char *p = str;
 559         char *tok;
 560         struct security_descriptor *ret = NULL;
 561         size_t sd_size;
 562         struct dom_sid *grp_sid=NULL, *owner_sid=NULL;
 563         struct security_acl *dacl=NULL;
 564         int revision=1;
 565
 566         while (next_token_talloc(ctx, &p, &tok, "\t,\r\n")) {
 567                 if (strncmp(tok,"REVISION:", 9) == 0) {
 568                         revision = strtol(tok+9, NULL, 16);
 569                         continue;
 570                 }
 571
 572                 if (strncmp(tok,"OWNER:", 6) == 0) {
 573                         if (owner_sid) {
 574                                 printf("Only specify owner once\n");
 575                                 goto done;
 576                         }
 577                         owner_sid = SMB_CALLOC_ARRAY(struct dom_sid, 1);
 578                         if (!owner_sid ||
 579                             !StringToSid(cli, owner_sid, tok+6)) {
 580                                 printf("Failed to parse owner sid\n");
 581                                 goto done;
 582                         }
 583                         continue;
 584                 }
 585
 586                 if (strncmp(tok,"GROUP:", 6) == 0) {
 587                         if (grp_sid) {
 588                                 printf("Only specify group once\n");
 589                                 goto done;
 590                         }
 591                         grp_sid = SMB_CALLOC_ARRAY(struct dom_sid, 1);
 592                         if (!grp_sid ||
 593                             !StringToSid(cli, grp_sid, tok+6)) {
 594                                 printf("Failed to parse group sid\n");
 595                                 goto done;
 596                         }
 597                         continue;
 598                 }
 599
 600                 if (strncmp(tok,"ACL:", 4) == 0) {
 601                         struct security_ace ace;
 602                         if (!parse_ace(cli, &ace, tok+4)) {
 603                                 goto done;
 604                         }
 605                         if(!add_ace(&dacl, &ace)) {
 606                                 printf("Failed to add ACL %s\n", tok);
 607                                 goto done;
 608                         }
 609                         continue;
 610                 }
 611
 612                 printf("Failed to parse token '%s' in security descriptor,\n", tok);
 613                 goto done;
 614         }
 615
 616         ret = make_sec_desc(ctx,revision, SEC_DESC_SELF_RELATIVE, owner_sid, grp_sid,
 617                             NULL, dacl, &sd_size);
 618
 619   done:
 620         SAFE_FREE(grp_sid);
 621         SAFE_FREE(owner_sid);
 622
 623         return ret;
 624 }
 625
 626
 627 /* print a ascii version of a security descriptor on a FILE handle */
 628 static void sec_desc_print(struct cli_state *cli, FILE *f, struct security_descriptor *sd)
 629 {
 630         fstring sidstr;
 631         uint32 i;
 632
 633         fprintf(f, "REVISION:%d\n", sd->revision);
 634         fprintf(f, "CONTROL:0x%x\n", sd->type);
 635
 636         /* Print owner and group sid */
 637
 638         if (sd->owner_sid) {
 639                 SidToString(cli, sidstr, sd->owner_sid);
 640         } else {
 641                 fstrcpy(sidstr, "");
 642         }
 643
 644         fprintf(f, "OWNER:%s\n", sidstr);
 645
 646         if (sd->group_sid) {
 647                 SidToString(cli, sidstr, sd->group_sid);
 648         } else {
 649                 fstrcpy(sidstr, "");
 650         }
 651
 652         fprintf(f, "GROUP:%s\n", sidstr);
 653
 654         /* Print aces */
 655         for (i = 0; sd->dacl && i < sd->dacl->num_aces; i++) {
 656                 struct security_ace *ace = &sd->dacl->aces[i];
 657                 fprintf(f, "ACL:");
 658                 print_ace(cli, f, ace);
 659                 fprintf(f, "\n");
 660         }
 661
 662 }
 663
 664 /*****************************************************
 665 get fileinfo for filename
 666 *******************************************************/
 667 static uint16 get_fileinfo(struct cli_state *cli, const char *filename)
 668 {
 669         uint16_t fnum = (uint16_t)-1;
 670         uint16 mode;
 671
 672         /* The desired access below is the only one I could find that works
 673            with NT4, W2KP and Samba */
 674
 675         if (!NT_STATUS_IS_OK(cli_ntcreate(cli, filename, 0, CREATE_ACCESS_READ,
 676                                           0, FILE_SHARE_READ|FILE_SHARE_WRITE,
 677                                           FILE_OPEN, 0x0, 0x0, &fnum))) {
 678                 printf("Failed to open %s: %s\n", filename, cli_errstr(cli));
 679         }
 680
 681         if (!cli_qfileinfo(cli, fnum, &mode, NULL, NULL, NULL,
 682                                              NULL, NULL, NULL)) {
 683                 printf("Failed to file info %s: %s\n", filename,
 684                                                        cli_errstr(cli));
 685         }
 686
 687         cli_close(cli, fnum);
 688
 689         return mode;
 690 }
 691
 692 /*****************************************************
 693 get sec desc for filename
 694 *******************************************************/
 695 static struct security_descriptor *get_secdesc(struct cli_state *cli, const char *filename)
 696 {
 697         uint16_t fnum = (uint16_t)-1;
 698         struct security_descriptor *sd;
 699
 700         /* The desired access below is the only one I could find that works
 701            with NT4, W2KP and Samba */
 702
 703         if (!NT_STATUS_IS_OK(cli_ntcreate(cli, filename, 0, CREATE_ACCESS_READ,
 704                                           0, FILE_SHARE_READ|FILE_SHARE_WRITE,
 705                                           FILE_OPEN, 0x0, 0x0, &fnum))) {
 706                 printf("Failed to open %s: %s\n", filename, cli_errstr(cli));
 707                 return NULL;
 708         }
 709
 710         sd = cli_query_secdesc(cli, fnum, talloc_tos());
 711
 712         cli_close(cli, fnum);
 713
 714         if (!sd) {
 715                 printf("Failed to get security descriptor\n");
 716                 return NULL;
 717         }
 718         return sd;
 719 }
 720
 721 /*****************************************************
 722 set sec desc for filename
 723 *******************************************************/
 724 static bool set_secdesc(struct cli_state *cli, const char *filename,
 725                         struct security_descriptor *sd)
 726 {
 727         uint16_t fnum = (uint16_t)-1;
 728         bool result=true;
 729
 730         /* The desired access below is the only one I could find that works
 731            with NT4, W2KP and Samba */
 732
 733         if (!NT_STATUS_IS_OK(cli_ntcreate(cli, filename, 0,
 734                                           WRITE_DAC_ACCESS|WRITE_OWNER_ACCESS,
 735                                           0, FILE_SHARE_READ|FILE_SHARE_WRITE,
 736                                           FILE_OPEN, 0x0, 0x0, &fnum))) {
 737                 printf("Failed to open %s: %s\n", filename, cli_errstr(cli));
 738                 return false;
 739         }
 740
 741         if (!cli_set_secdesc(cli, fnum, sd)) {
 742                 printf("ERROR: security description set failed: %s\n",
 743                        cli_errstr(cli));
 744                 result=false;
 745         }
 746
 747         cli_close(cli, fnum);
 748         return result;
 749 }
 750
 751 /*****************************************************
 752 dump the acls for a file
 753 *******************************************************/
 754 static int cacl_dump(struct cli_state *cli, const char *filename)
 755 {
 756         int result = EXIT_FAILED;
 757         struct security_descriptor *sd;
 758
 759         if (test_args)
 760                 return EXIT_OK;
 761
 762         sd = get_secdesc(cli, filename);
 763
 764         if (sd) {
 765                 if (sddl) {
 766                         printf("%s\n", sddl_encode(talloc_tos(), sd,
 767                                            get_global_sam_sid()));
 768                 } else {
 769                         sec_desc_print(cli, stdout, sd);
 770                 }
 771                 result = EXIT_OK;
 772         }
 773
 774         return result;
 775 }
 776
 777 /*****************************************************
 778 Change the ownership or group ownership of a file. Just
 779 because the NT docs say this can't be done :-). JRA.
 780 *******************************************************/
 781
 782 static int owner_set(struct cli_state *cli, enum chown_mode change_mode,
 783                         const char *filename, const char *new_username)
 784 {
 785         struct dom_sid sid;
 786         struct security_descriptor *sd, *old;
 787         size_t sd_size;
 788
 789         if (!StringToSid(cli, &sid, new_username))
 790                 return EXIT_PARSE_ERROR;
 791
 792         old = get_secdesc(cli, filename);
 793
 794         if (!old) {
 795                 return EXIT_FAILED;
 796         }
 797
 798         sd = make_sec_desc(talloc_tos(),old->revision, old->type,
 799                                 (change_mode == REQUEST_CHOWN) ? &sid : NULL,
 800                                 (change_mode == REQUEST_CHGRP) ? &sid : NULL,
 801                            NULL, NULL, &sd_size);
 802
 803         if (!set_secdesc(cli, filename, sd)) {
 804                 return EXIT_FAILED;
 805         }
 806
 807         return EXIT_OK;
 808 }
 809
 810
 811 /* The MSDN is contradictory over the ordering of ACE entries in an
 812    ACL.  However NT4 gives a "The information may have been modified
 813    by a computer running Windows NT 5.0" if denied ACEs do not appear
 814    before allowed ACEs. At
 815    http://technet.microsoft.com/en-us/library/cc781716.aspx the
 816    canonical order is specified as "Explicit Deny, Explicit Allow,
 817    Inherited ACEs unchanged" */
 818
 819 static int ace_compare(struct security_ace *ace1, struct security_ace *ace2)
 820 {
 821         if (sec_ace_equal(ace1, ace2))
 822                 return 0;
 823
 824         if ((ace1->flags & SEC_ACE_FLAG_INHERITED_ACE) &&
 825                         !(ace2->flags & SEC_ACE_FLAG_INHERITED_ACE))
 826                 return 1;
 827         if (!(ace1->flags & SEC_ACE_FLAG_INHERITED_ACE) &&
 828                         (ace2->flags & SEC_ACE_FLAG_INHERITED_ACE))
 829                 return -1;
 830         if ((ace1->flags & SEC_ACE_FLAG_INHERITED_ACE) &&
 831                         (ace2->flags & SEC_ACE_FLAG_INHERITED_ACE))
 832                 return ace1 - ace2;
 833
 834         if (ace1->type != ace2->type)
 835                 return ace2->type - ace1->type;
 836
 837         if (sid_compare(&ace1->trustee, &ace2->trustee))
 838                 return sid_compare(&ace1->trustee, &ace2->trustee);
 839
 840         if (ace1->flags != ace2->flags)
 841                 return ace1->flags - ace2->flags;
 842
 843         if (ace1->access_mask != ace2->access_mask)
 844                 return ace1->access_mask - ace2->access_mask;
 845
 846         if (ace1->size != ace2->size)
 847                 return ace1->size - ace2->size;
 848
 849         return memcmp(ace1, ace2, sizeof(struct security_ace));
 850 }
 851
 852 static void sort_acl(struct security_acl *the_acl)
 853 {
 854         uint32 i;
 855         if (!the_acl) return;
 856
 857         TYPESAFE_QSORT(the_acl->aces, the_acl->num_aces, ace_compare);
 858
 859         for (i=1;i<the_acl->num_aces;) {
 860                 if (sec_ace_equal(&the_acl->aces[i-1], &the_acl->aces[i])) {
 861                         int j;
 862                         for (j=i; j<the_acl->num_aces-1; j++) {
 863                                 the_acl->aces[j] = the_acl->aces[j+1];
 864                         }
 865                         the_acl->num_aces--;
 866                 } else {
 867                         i++;
 868                 }
 869         }
 870 }
 871
 872 /*****************************************************
 873 set the ACLs on a file given an ascii description
 874 *******************************************************/
 875
 876 static int cacl_set(struct cli_state *cli, const char *filename,
 877                     char *the_acl, enum acl_mode mode)
 878 {
 879         struct security_descriptor *sd, *old;
 880         uint32 i, j;
 881         size_t sd_size;
 882         int result = EXIT_OK;
 883
 884         if (sddl) {
 885                 sd = sddl_decode(talloc_tos(), the_acl, get_global_sam_sid());
 886         } else {
 887                 sd = sec_desc_parse(talloc_tos(), cli, the_acl);
 888         }
 889
 890         if (!sd) return EXIT_PARSE_ERROR;
 891         if (test_args) return EXIT_OK;
 892
 893         old = get_secdesc(cli, filename);
 894
 895         if (!old) {
 896                 return EXIT_FAILED;
 897         }
 898
 899         /* the logic here is rather more complex than I would like */
 900         switch (mode) {
 901         case SMB_ACL_DELETE:
 902                 for (i=0;sd->dacl && i<sd->dacl->num_aces;i++) {
 903                         bool found = False;
 904
 905                         for (j=0;old->dacl && j<old->dacl->num_aces;j++) {
 906                                 if (sec_ace_equal(&sd->dacl->aces[i],
 907                                                   &old->dacl->aces[j])) {
 908                                         uint32 k;
 909                                         for (k=j; k<old->dacl->num_aces-1;k++) {
 910                                                 old->dacl->aces[k] = old->dacl->aces[k+1];
 911                                         }
 912                                         old->dacl->num_aces--;
 913                                         found = True;
 914                                         break;
 915                                 }
 916                         }
 917
 918                         if (!found) {
 919                                 printf("ACL for ACE:");
 920                                 print_ace(cli, stdout, &sd->dacl->aces[i]);
 921                                 printf(" not found\n");
 922                         }
 923                 }
 924                 break;
 925
 926         case SMB_ACL_MODIFY:
 927                 for (i=0;sd->dacl && i<sd->dacl->num_aces;i++) {
 928                         bool found = False;
 929
 930                         for (j=0;old->dacl && j<old->dacl->num_aces;j++) {
 931                                 if (sid_equal(&sd->dacl->aces[i].trustee,
 932                                               &old->dacl->aces[j].trustee)) {
 933                                         old->dacl->aces[j] = sd->dacl->aces[i];
 934                                         found = True;
 935                                 }
 936                         }
 937
 938                         if (!found) {
 939                                 fstring str;
 940
 941                                 SidToString(cli, str,
 942                                             &sd->dacl->aces[i].trustee);
 943                                 printf("ACL for SID %s not found\n", str);
 944                         }
 945                 }
 946
 947                 if (sd->owner_sid) {
 948                         old->owner_sid = sd->owner_sid;
 949                 }
 950
 951                 if (sd->group_sid) {
 952                         old->group_sid = sd->group_sid;
 953                 }
 954
 955                 break;
 956
 957         case SMB_ACL_ADD:
 958                 for (i=0;sd->dacl && i<sd->dacl->num_aces;i++) {
 959                         add_ace(&old->dacl, &sd->dacl->aces[i]);
 960                 }
 961                 break;
 962
 963         case SMB_ACL_SET:
 964                 old = sd;
 965                 break;
 966         }
 967
 968         /* Denied ACE entries must come before allowed ones */
 969         sort_acl(old->dacl);
 970
 971         /* Create new security descriptor and set it */
 972
 973         /* We used to just have "WRITE_DAC_ACCESS" without WRITE_OWNER.
 974            But if we're sending an owner, even if it's the same as the one
 975            that already exists then W2K3 insists we open with WRITE_OWNER access.
 976            I need to check that setting a SD with no owner set works against WNT
 977            and W2K. JRA.
 978         */
 979
 980         sd = make_sec_desc(talloc_tos(),old->revision, old->type,
 981                            old->owner_sid, old->group_sid,
 982                            NULL, old->dacl, &sd_size);
 983
 984         if (!set_secdesc(cli, filename, sd)) {
 985                 result = EXIT_FAILED;
 986         }
 987
 988         return result;
 989 }
 990
 991 /*****************************************************
 992 set the inherit on a file
 993 *******************************************************/
 994 static int inherit(struct cli_state *cli, const char *filename,
 995                    const char *type)
 996 {
 997         struct security_descriptor *old,*sd;
 998         uint32 oldattr;
 999         size_t sd_size;
1000         int result = EXIT_OK;
1001
1002         old = get_secdesc(cli, filename);
1003
1004         if (!old) {
1005                 return EXIT_FAILED;
1006         }
1007
1008         oldattr = get_fileinfo(cli,filename);
1009
1010         if (strcmp(type,"allow")==0) {
1011                 if ((old->type & SEC_DESC_DACL_PROTECTED) ==
1012                     SEC_DESC_DACL_PROTECTED) {
1013                         int i;
1014                         char *parentname,*temp;
1015                         struct security_descriptor *parent;
1016                         temp = talloc_strdup(talloc_tos(), filename);
1017
1018                         old->type=old->type & (~SEC_DESC_DACL_PROTECTED);
1019
1020                         /* look at parent and copy in all its inheritable ACL's. */
1021                         string_replace(temp, '\\', '/');
1022                         if (!parent_dirname(talloc_tos(),temp,&parentname,NULL)) {
1023                                 return EXIT_FAILED;
1024                         }
1025                         string_replace(parentname, '/', '\\');
1026                         parent = get_secdesc(cli,parentname);
1027                         for (i=0;i<parent->dacl->num_aces;i++) {
1028                                 struct security_ace *ace=&parent->dacl->aces[i];
1029                                 if ((oldattr & aDIR) == aDIR) {
1030                                         if ((ace->flags & SEC_ACE_FLAG_CONTAINER_INHERIT) ==
1031                                             SEC_ACE_FLAG_CONTAINER_INHERIT) {
1032                                                 add_ace(&old->dacl, ace);
1033                                         }
1034                                 } else {
1035                                         if ((ace->flags & SEC_ACE_FLAG_OBJECT_INHERIT) ==
1036                                             SEC_ACE_FLAG_OBJECT_INHERIT) {
1037                                                 add_ace(&old->dacl, ace);
1038                                         }
1039                                 }
1040                         }
1041                 } else {
1042                         printf("Already set to inheritable permissions.\n");
1043                         return EXIT_FAILED;
1044                 }
1045         } else if (strcmp(type,"remove")==0) {
1046                 if ((old->type & SEC_DESC_DACL_PROTECTED) !=
1047                     SEC_DESC_DACL_PROTECTED) {
1048                         old->type=old->type | SEC_DESC_DACL_PROTECTED;
1049
1050                         /* remove all inherited ACL's. */
1051                         if (old->dacl) {
1052                                 int i;
1053                                 struct security_acl *temp=old->dacl;
1054                                 old->dacl=make_sec_acl(talloc_tos(), 3, 0, NULL);
1055                                 for (i=temp->num_aces-1;i>=0;i--) {
1056                                         struct security_ace *ace=&temp->aces[i];
1057                                         /* Remove all ace with INHERITED flag set */
1058                                         if ((ace->flags & SEC_ACE_FLAG_INHERITED_ACE) !=
1059                                             SEC_ACE_FLAG_INHERITED_ACE) {
1060                                                 add_ace(&old->dacl,ace);
1061                                         }
1062                                 }
1063                         }
1064                 } else {
1065                         printf("Already set to no inheritable permissions.\n");
1066                         return EXIT_FAILED;
1067                 }
1068         } else if (strcmp(type,"copy")==0) {
1069                 if ((old->type & SEC_DESC_DACL_PROTECTED) !=
1070                     SEC_DESC_DACL_PROTECTED) {
1071                         old->type=old->type | SEC_DESC_DACL_PROTECTED;
1072
1073                         /* convert all inherited ACL's to non inherated ACL's. */
1074                         if (old->dacl) {
1075                                 int i;
1076                                 for (i=0;i<old->dacl->num_aces;i++) {
1077                                         struct security_ace *ace=&old->dacl->aces[i];
1078                                         /* Remove INHERITED FLAG from all aces */
1079                                         ace->flags=ace->flags&(~SEC_ACE_FLAG_INHERITED_ACE);
1080                                 }
1081                         }
1082                 } else {
1083                         printf("Already set to no inheritable permissions.\n");
1084                         return EXIT_FAILED;
1085                 }
1086         }
1087
1088         /* Denied ACE entries must come before allowed ones */
1089         sort_acl(old->dacl);
1090
1091         sd = make_sec_desc(talloc_tos(),old->revision, old->type,
1092                            old->owner_sid, old->group_sid,
1093                            NULL, old->dacl, &sd_size);
1094
1095         if (!set_secdesc(cli, filename, sd)) {
1096                 result = EXIT_FAILED;
1097         }
1098
1099         return result;
1100 }
1101
1102 /*****************************************************
1103  Return a connection to a server.
1104 *******************************************************/
1105 static struct cli_state *connect_one(struct user_auth_info *auth_info,
1106                                      const char *server, const char *share)
1107 {
1108         struct cli_state *c = NULL;
1109         struct sockaddr_storage ss;
1110         NTSTATUS nt_status;
1111         uint32_t flags = 0;
1112
1113         zero_sockaddr(&ss);
1114
1115         if (get_cmdline_auth_info_use_kerberos(auth_info)) {
1116                 flags |= CLI_FULL_CONNECTION_USE_KERBEROS |
1117                          CLI_FULL_CONNECTION_FALLBACK_AFTER_KERBEROS;
1118         }
1119
1120         if (get_cmdline_auth_info_use_machine_account(auth_info) &&
1121             !set_cmdline_auth_info_machine_account_creds(auth_info)) {
1122                 return NULL;
1123         }
1124
1125         set_cmdline_auth_info_getpass(auth_info);
1126
1127         nt_status = cli_full_connection(&c, global_myname(), server,
1128                                 &ss, 0,
1129                                 share, "?????",
1130                                 get_cmdline_auth_info_username(auth_info),
1131                                 lp_workgroup(),
1132                                 get_cmdline_auth_info_password(auth_info),
1133                                 flags,
1134                                 get_cmdline_auth_info_signing_state(auth_info),
1135                                 NULL);
1136         if (!NT_STATUS_IS_OK(nt_status)) {
1137                 DEBUG(0,("cli_full_connection failed! (%s)\n", nt_errstr(nt_status)));
1138                 return NULL;
1139         }
1140
1141         if (get_cmdline_auth_info_smb_encrypt(auth_info)) {
1142                 nt_status = cli_cm_force_encryption(c,
1143                                         get_cmdline_auth_info_username(auth_info),
1144                                         get_cmdline_auth_info_password(auth_info),
1145                                         lp_workgroup(),
1146                                         share);
1147                 if (!NT_STATUS_IS_OK(nt_status)) {
1148                         cli_shutdown(c);
1149                         c = NULL;
1150                 }
1151         }
1152
1153         return c;
1154 }
1155
1156 /****************************************************************************
1157   main program
1158 ****************************************************************************/
1159  int main(int argc, const char *argv[])
1160 {
1161         char *share;
1162         int opt;
1163         enum acl_mode mode = SMB_ACL_SET;
1164         static char *the_acl = NULL;
1165         enum chown_mode change_mode = REQUEST_NONE;
1166         int result;
1167         char *path;
1168         char *filename = NULL;
1169         poptContext pc;
1170         struct poptOption long_options[] = {
1171                 POPT_AUTOHELP
1172                 { "delete", 'D', POPT_ARG_STRING, NULL, 'D', "Delete an acl", "ACL" },
1173                 { "modify", 'M', POPT_ARG_STRING, NULL, 'M', "Modify an acl", "ACL" },
1174                 { "add", 'a', POPT_ARG_STRING, NULL, 'a', "Add an acl", "ACL" },
1175                 { "set", 'S', POPT_ARG_STRING, NULL, 'S', "Set acls", "ACLS" },
1176                 { "chown", 'C', POPT_ARG_STRING, NULL, 'C', "Change ownership of a file", "USERNAME" },
1177                 { "chgrp", 'G', POPT_ARG_STRING, NULL, 'G', "Change group ownership of a file", "GROUPNAME" },
1178                 { "inherit", 'I', POPT_ARG_STRING, NULL, 'I', "Inherit allow|remove|copy" },
1179                 { "numeric", 0, POPT_ARG_NONE, &numeric, 1, "Don't resolve sids or masks to names" },
1180                 { "sddl", 0, POPT_ARG_NONE, &sddl, 1, "Output and input acls in sddl format" },
1181                 { "test-args", 't', POPT_ARG_NONE, &test_args, 1, "Test arguments"},
1182                 POPT_COMMON_SAMBA
1183                 POPT_COMMON_CONNECTION
1184                 POPT_COMMON_CREDENTIALS
1185                 POPT_TABLEEND
1186         };
1187
1188         struct cli_state *cli;
1189         TALLOC_CTX *frame = talloc_stackframe();
1190         const char *owner_username = "";
1191         char *server;
1192         struct user_auth_info *auth_info;
1193
1194         load_case_tables();
1195
1196
1197         /* set default debug level to 1 regardless of what smb.conf sets */
1198         setup_logging( "smbcacls", True );
1199         DEBUGLEVEL_CLASS[DBGC_ALL] = 1;
1200         dbf = x_stderr;
1201         x_setbuf( x_stderr, NULL );
1202         AllowDebugChange = false;
1203
1204         setlinebuf(stdout);
1205
1206         lp_load(get_dyn_CONFIGFILE(),True,False,False,True);
1207         load_interfaces();
1208
1209         auth_info = user_auth_info_init(frame);
1210         if (auth_info == NULL) {
1211                 exit(1);
1212         }
1213         popt_common_set_auth_info(auth_info);
1214
1215         pc = poptGetContext("smbcacls", argc, argv, long_options, 0);
1216
1217         poptSetOtherOptionHelp(pc, "//server1/share1 filename\nACLs look like: "
1218                 "'ACL:user:[ALLOWED|DENIED]/flags/permissions'");
1219
1220         while ((opt = poptGetNextOpt(pc)) != -1) {
1221                 switch (opt) {
1222                 case 'S':
1223                         the_acl = smb_xstrdup(poptGetOptArg(pc));
1224                         mode = SMB_ACL_SET;
1225                         break;
1226
1227                 case 'D':
1228                         the_acl = smb_xstrdup(poptGetOptArg(pc));
1229                         mode = SMB_ACL_DELETE;
1230                         break;
1231
1232                 case 'M':
1233                         the_acl = smb_xstrdup(poptGetOptArg(pc));
1234                         mode = SMB_ACL_MODIFY;
1235                         break;
1236
1237                 case 'a':
1238                         the_acl = smb_xstrdup(poptGetOptArg(pc));
1239                         mode = SMB_ACL_ADD;
1240                         break;
1241
1242                 case 'C':
1243                         owner_username = poptGetOptArg(pc);
1244                         change_mode = REQUEST_CHOWN;
1245                         break;
1246
1247                 case 'G':
1248                         owner_username = poptGetOptArg(pc);
1249                         change_mode = REQUEST_CHGRP;
1250                         break;
1251
1252                 case 'I':
1253                         owner_username = poptGetOptArg(pc);
1254                         change_mode = REQUEST_INHERIT;
1255                         break;
1256                 }
1257         }
1258
1259         /* Make connection to server */
1260         if(!poptPeekArg(pc)) {
1261                 poptPrintUsage(pc, stderr, 0);
1262                 return -1;
1263         }
1264
1265         path = talloc_strdup(frame, poptGetArg(pc));
1266         if (!path) {
1267                 return -1;
1268         }
1269
1270         if(!poptPeekArg(pc)) {
1271                 poptPrintUsage(pc, stderr, 0);
1272                 return -1;
1273         }
1274
1275         filename = talloc_strdup(frame, poptGetArg(pc));
1276         if (!filename) {
1277                 return -1;
1278         }
1279
1280         string_replace(path,'/','\\');
1281
1282         server = talloc_strdup(frame, path+2);
1283         if (!server) {
1284                 return -1;
1285         }
1286         share = strchr_m(server,'\\');
1287         if (!share) {
1288                 printf("Invalid argument: %s\n", share);
1289                 return -1;
1290         }
1291
1292         *share = 0;
1293         share++;
1294
1295         if (!test_args) {
1296                 cli = connect_one(auth_info, server, share);
1297                 if (!cli) {
1298                         exit(EXIT_FAILED);
1299                 }
1300         } else {
1301                 exit(0);
1302         }
1303
1304         string_replace(filename, '/', '\\');
1305         if (filename[0] != '\\') {
1306                 filename = talloc_asprintf(frame,
1307                                 "\\%s",
1308                                 filename);
1309                 if (!filename) {
1310                         return -1;
1311                 }
1312         }
1313
1314         /* Perform requested action */
1315
1316         if (change_mode == REQUEST_INHERIT) {
1317                 result = inherit(cli, filename, owner_username);
1318         } else if (change_mode != REQUEST_NONE) {
1319                 result = owner_set(cli, change_mode, filename, owner_username);
1320         } else if (the_acl) {
1321                 result = cacl_set(cli, filename, the_acl, mode);
1322         } else {
1323                 result = cacl_dump(cli, filename);
1324         }
1325
1326         TALLOC_FREE(frame);
1327
1328         return result;
1329 }