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 "popt_common.h"
  26 #include "../librpc/gen_ndr/ndr_lsa.h"
  27 #include "rpc_client/cli_lsarpc.h"
  28
  29 extern bool AllowDebugChange;
  30
  31 static int test_args;
  32
  33 #define CREATE_ACCESS_READ READ_CONTROL_ACCESS
  34
  35 /* numeric is set when the user wants numeric SIDs and ACEs rather
  36    than going via LSA calls to resolve them */
  37 static int numeric;
  38
  39 static int sddl;
  40
  41 enum acl_mode {SMB_ACL_SET, SMB_ACL_DELETE, SMB_ACL_MODIFY, SMB_ACL_ADD };
  42 enum chown_mode {REQUEST_NONE, REQUEST_CHOWN, REQUEST_CHGRP, REQUEST_INHERIT};
  43 enum exit_values {EXIT_OK, EXIT_FAILED, EXIT_PARSE_ERROR};
  44
  45 struct perm_value {
  46         const char *perm;
  47         uint32 mask;
  48 };
  49
  50 /* These values discovered by inspection */
  51
  52 static const struct perm_value special_values[] = {
  53         { "R", 0x00120089 },
  54         { "W", 0x00120116 },
  55         { "X", 0x001200a0 },
  56         { "D", 0x00010000 },
  57         { "P", 0x00040000 },
  58         { "O", 0x00080000 },
  59         { NULL, 0 },
  60 };
  61
  62 static const struct perm_value standard_values[] = {
  63         { "READ",   0x001200a9 },
  64         { "CHANGE", 0x001301bf },
  65         { "FULL",   0x001f01ff },
  66         { NULL, 0 },
  67 };
  68
  69 /* Open cli connection and policy handle */
  70
  71 static NTSTATUS cli_lsa_lookup_sid(struct cli_state *cli,
  72                                    const struct dom_sid *sid,
  73                                    TALLOC_CTX *mem_ctx,
  74                                    enum lsa_SidType *type,
  75                                    char **domain, char **name)
  76 {
  77         uint16 orig_cnum = cli->cnum;
  78         struct rpc_pipe_client *p = NULL;
  79         struct policy_handle handle;
  80         NTSTATUS status;
  81         TALLOC_CTX *frame = talloc_stackframe();
  82         enum lsa_SidType *types;
  83         char **domains;
  84         char **names;
  85
  86         status = cli_tcon_andx(cli, "IPC$", "?????", "", 0);
  87         if (!NT_STATUS_IS_OK(status)) {
  88                 return status;
  89         }
  90
  91         status = cli_rpc_pipe_open_noauth(cli, &ndr_table_lsarpc.syntax_id,
  92                                           &p);
  93         if (!NT_STATUS_IS_OK(status)) {
  94                 goto fail;
  95         }
  96
  97         status = rpccli_lsa_open_policy(p, talloc_tos(), True,
  98                                         GENERIC_EXECUTE_ACCESS, &handle);
  99         if (!NT_STATUS_IS_OK(status)) {
 100                 goto fail;
 101         }
 102
 103         status = rpccli_lsa_lookup_sids(p, talloc_tos(), &handle, 1, sid,
 104                                         &domains, &names, &types);
 105         if (!NT_STATUS_IS_OK(status)) {
 106                 goto fail;
 107         }
 108
 109         *type = types[0];
 110         *domain = talloc_move(mem_ctx, &domains[0]);
 111         *name = talloc_move(mem_ctx, &names[0]);
 112
 113         status = NT_STATUS_OK;
 114  fail:
 115         TALLOC_FREE(p);
 116         cli_tdis(cli);
 117         cli->cnum = orig_cnum;
 118         TALLOC_FREE(frame);
 119         return status;
 120 }
 121
 122 static NTSTATUS cli_lsa_lookup_name(struct cli_state *cli,
 123                                     const char *name,
 124                                     enum lsa_SidType *type,
 125                                     struct dom_sid *sid)
 126 {
 127         uint16 orig_cnum = cli->cnum;
 128         struct rpc_pipe_client *p;
 129         struct policy_handle handle;
 130         NTSTATUS status;
 131         TALLOC_CTX *frame = talloc_stackframe();
 132         struct dom_sid *sids;
 133         enum lsa_SidType *types;
 134
 135         status = cli_tcon_andx(cli, "IPC$", "?????", "", 0);
 136         if (!NT_STATUS_IS_OK(status)) {
 137                 return status;
 138         }
 139
 140         status = cli_rpc_pipe_open_noauth(cli, &ndr_table_lsarpc.syntax_id,
 141                                           &p);
 142         if (!NT_STATUS_IS_OK(status)) {
 143                 goto fail;
 144         }
 145
 146         status = rpccli_lsa_open_policy(p, talloc_tos(), True,
 147                                         GENERIC_EXECUTE_ACCESS, &handle);
 148         if (!NT_STATUS_IS_OK(status)) {
 149                 goto fail;
 150         }
 151
 152         status = rpccli_lsa_lookup_names(p, talloc_tos(), &handle, 1, &name,
 153                                          NULL, 1, &sids, &types);
 154         if (!NT_STATUS_IS_OK(status)) {
 155                 goto fail;
 156         }
 157
 158         *type = types[0];
 159         *sid = sids[0];
 160
 161         status = NT_STATUS_OK;
 162  fail:
 163         TALLOC_FREE(p);
 164         cli_tdis(cli);
 165         cli->cnum = orig_cnum;
 166         TALLOC_FREE(frame);
 167         return status;
 168 }
 169
 170 /* convert a SID to a string, either numeric or username/group */
 171 static void SidToString(struct cli_state *cli, fstring str, const struct dom_sid *sid)
 172 {
 173         char *domain = NULL;
 174         char *name = NULL;
 175         enum lsa_SidType type;
 176         NTSTATUS status;
 177
 178         sid_to_fstring(str, sid);
 179
 180         if (numeric) {
 181                 return;
 182         }
 183
 184         status = cli_lsa_lookup_sid(cli, sid, talloc_tos(), &type,
 185                                     &domain, &name);
 186
 187         if (!NT_STATUS_IS_OK(status)) {
 188                 return;
 189         }
 190
 191         if (*domain) {
 192                 slprintf(str, sizeof(fstring) - 1, "%s%s%s",
 193                         domain, lp_winbind_separator(), name);
 194         } else {
 195                 fstrcpy(str, name);
 196         }
 197 }
 198
 199 /* convert a string to a SID, either numeric or username/group */
 200 static bool StringToSid(struct cli_state *cli, struct dom_sid *sid, const char *str)
 201 {
 202         enum lsa_SidType type;
 203
 204         if (strncmp(str, "S-", 2) == 0) {
 205                 return string_to_sid(sid, str);
 206         }
 207
 208         return NT_STATUS_IS_OK(cli_lsa_lookup_name(cli, str, &type, sid));
 209 }
 210
 211 static void print_ace_flags(FILE *f, uint8_t flags)
 212 {
 213         char *str = talloc_strdup(NULL, "");
 214
 215         if (!str) {
 216                 goto out;
 217         }
 218
 219         if (flags & SEC_ACE_FLAG_OBJECT_INHERIT) {
 220                 str = talloc_asprintf(str, "%s%s",
 221                                 str, "OI|");
 222                 if (!str) {
 223                         goto out;
 224                 }
 225         }
 226         if (flags & SEC_ACE_FLAG_CONTAINER_INHERIT) {
 227                 str = talloc_asprintf(str, "%s%s",
 228                                 str, "CI|");
 229                 if (!str) {
 230                         goto out;
 231                 }
 232         }
 233         if (flags & SEC_ACE_FLAG_NO_PROPAGATE_INHERIT) {
 234                 str = talloc_asprintf(str, "%s%s",
 235                                 str, "NP|");
 236                 if (!str) {
 237                         goto out;
 238                 }
 239         }
 240         if (flags & SEC_ACE_FLAG_INHERIT_ONLY) {
 241                 str = talloc_asprintf(str, "%s%s",
 242                                 str, "IO|");
 243                 if (!str) {
 244                         goto out;
 245                 }
 246         }
 247         if (flags & SEC_ACE_FLAG_INHERITED_ACE) {
 248                 str = talloc_asprintf(str, "%s%s",
 249                                 str, "I|");
 250                 if (!str) {
 251                         goto out;
 252                 }
 253         }
 254         /* Ignore define SEC_ACE_FLAG_SUCCESSFUL_ACCESS ( 0x40 )
 255            and SEC_ACE_FLAG_FAILED_ACCESS ( 0x80 ) as they're
 256            audit ace flags. */
 257
 258         if (str[strlen(str)-1] == '|') {
 259                 str[strlen(str)-1] = '\0';
 260                 fprintf(f, "/%s/", str);
 261         } else {
 262                 fprintf(f, "/0x%x/", flags);
 263         }
 264         TALLOC_FREE(str);
 265         return;
 266
 267   out:
 268         fprintf(f, "/0x%x/", flags);
 269 }
 270
 271 /* print an ACE on a FILE, using either numeric or ascii representation */
 272 static void print_ace(struct cli_state *cli, FILE *f, struct security_ace *ace)
 273 {
 274         const struct perm_value *v;
 275         fstring sidstr;
 276         int do_print = 0;
 277         uint32 got_mask;
 278
 279         SidToString(cli, sidstr, &ace->trustee);
 280
 281         fprintf(f, "%s:", sidstr);
 282
 283         if (numeric) {
 284                 fprintf(f, "%d/0x%x/0x%08x",
 285                         ace->type, ace->flags, ace->access_mask);
 286                 return;
 287         }
 288
 289         /* Ace type */
 290
 291         if (ace->type == SEC_ACE_TYPE_ACCESS_ALLOWED) {
 292                 fprintf(f, "ALLOWED");
 293         } else if (ace->type == SEC_ACE_TYPE_ACCESS_DENIED) {
 294                 fprintf(f, "DENIED");
 295         } else {
 296                 fprintf(f, "%d", ace->type);
 297         }
 298
 299         print_ace_flags(f, ace->flags);
 300
 301         /* Standard permissions */
 302
 303         for (v = standard_values; v->perm; v++) {
 304                 if (ace->access_mask == v->mask) {
 305                         fprintf(f, "%s", v->perm);
 306                         return;
 307                 }
 308         }
 309
 310         /* Special permissions.  Print out a hex value if we have
 311            leftover bits in the mask. */
 312
 313         got_mask = ace->access_mask;
 314
 315  again:
 316         for (v = special_values; v->perm; v++) {
 317                 if ((ace->access_mask & v->mask) == v->mask) {
 318                         if (do_print) {
 319                                 fprintf(f, "%s", v->perm);
 320                         }
 321                         got_mask &= ~v->mask;
 322                 }
 323         }
 324
 325         if (!do_print) {
 326                 if (got_mask != 0) {
 327                         fprintf(f, "0x%08x", ace->access_mask);
 328                 } else {
 329                         do_print = 1;
 330                         goto again;
 331                 }
 332         }
 333 }
 334
 335 static bool parse_ace_flags(const char *str, unsigned int *pflags)
 336 {
 337         const char *p = str;
 338         *pflags = 0;
 339
 340         while (*p) {
 341                 if (strnequal(p, "OI", 2)) {
 342                         *pflags |= SEC_ACE_FLAG_OBJECT_INHERIT;
 343                         p += 2;
 344                 } else if (strnequal(p, "CI", 2)) {
 345                         *pflags |= SEC_ACE_FLAG_CONTAINER_INHERIT;
 346                         p += 2;
 347                 } else if (strnequal(p, "NP", 2)) {
 348                         *pflags |= SEC_ACE_FLAG_NO_PROPAGATE_INHERIT;
 349                         p += 2;
 350                 } else if (strnequal(p, "IO", 2)) {
 351                         *pflags |= SEC_ACE_FLAG_INHERIT_ONLY;
 352                         p += 2;
 353                 } else if (*p == 'I') {
 354                         *pflags |= SEC_ACE_FLAG_INHERITED_ACE;
 355                         p += 1;
 356                 } else if (*p) {
 357                         return false;
 358                 }
 359
 360                 if (*p != '|' && *p != '\0') {
 361                         return false;
 362                 }
 363         }
 364         return true;
 365 }
 366
 367 /* parse an ACE in the same format as print_ace() */
 368 static bool parse_ace(struct cli_state *cli, struct security_ace *ace,
 369                       const char *orig_str)
 370 {
 371         char *p;
 372         const char *cp;
 373         char *tok;
 374         unsigned int atype = 0;
 375         unsigned int aflags = 0;
 376         unsigned int amask = 0;
 377         struct dom_sid sid;
 378         uint32_t mask;
 379         const struct perm_value *v;
 380         char *str = SMB_STRDUP(orig_str);
 381         TALLOC_CTX *frame = talloc_stackframe();
 382
 383         if (!str) {
 384                 TALLOC_FREE(frame);
 385                 return False;
 386         }
 387
 388         ZERO_STRUCTP(ace);
 389         p = strchr_m(str,':');
 390         if (!p) {
 391                 printf("ACE '%s': missing ':'.\n", orig_str);
 392                 SAFE_FREE(str);
 393                 TALLOC_FREE(frame);
 394                 return False;
 395         }
 396         *p = '\0';
 397         p++;
 398         /* Try to parse numeric form */
 399
 400         if (sscanf(p, "%i/%i/%i", &atype, &aflags, &amask) == 3 &&
 401             StringToSid(cli, &sid, str)) {
 402                 goto done;
 403         }
 404
 405         /* Try to parse text form */
 406
 407         if (!StringToSid(cli, &sid, str)) {
 408                 printf("ACE '%s': failed to convert '%s' to SID\n",
 409                         orig_str, str);
 410                 SAFE_FREE(str);
 411                 TALLOC_FREE(frame);
 412                 return False;
 413         }
 414
 415         cp = p;
 416         if (!next_token_talloc(frame, &cp, &tok, "/")) {
 417                 printf("ACE '%s': failed to find '/' character.\n",
 418                         orig_str);
 419                 SAFE_FREE(str);
 420                 TALLOC_FREE(frame);
 421                 return False;
 422         }
 423
 424         if (strncmp(tok, "ALLOWED", strlen("ALLOWED")) == 0) {
 425                 atype = SEC_ACE_TYPE_ACCESS_ALLOWED;
 426         } else if (strncmp(tok, "DENIED", strlen("DENIED")) == 0) {
 427                 atype = SEC_ACE_TYPE_ACCESS_DENIED;
 428         } else {
 429                 printf("ACE '%s': missing 'ALLOWED' or 'DENIED' entry at '%s'\n",
 430                         orig_str, tok);
 431                 SAFE_FREE(str);
 432                 TALLOC_FREE(frame);
 433                 return False;
 434         }
 435
 436         /* Only numeric form accepted for flags at present */
 437
 438         if (!next_token_talloc(frame, &cp, &tok, "/")) {
 439                 printf("ACE '%s': bad flags entry at '%s'\n",
 440                         orig_str, tok);
 441                 SAFE_FREE(str);
 442                 TALLOC_FREE(frame);
 443                 return False;
 444         }
 445
 446         if (tok[0] < '0' || tok[0] > '9') {
 447                 if (!parse_ace_flags(tok, &aflags)) {
 448                         printf("ACE '%s': bad named flags entry at '%s'\n",
 449                                 orig_str, tok);
 450                         SAFE_FREE(str);
 451                         TALLOC_FREE(frame);
 452                         return False;
 453                 }
 454         } else if (strnequal(tok, "0x", 2)) {
 455                 if (!sscanf(tok, "%x", &aflags)) {
 456                         printf("ACE '%s': bad hex flags entry at '%s'\n",
 457                                 orig_str, tok);
 458                         SAFE_FREE(str);
 459                         TALLOC_FREE(frame);
 460                         return False;
 461                 }
 462         } else {
 463                 if (!sscanf(tok, "%i", &aflags)) {
 464                         printf("ACE '%s': bad integer flags entry at '%s'\n",
 465                                 orig_str, tok);
 466                         SAFE_FREE(str);
 467                         TALLOC_FREE(frame);
 468                         return False;
 469                 }
 470         }
 471
 472         if (!next_token_talloc(frame, &cp, &tok, "/")) {
 473                 printf("ACE '%s': missing / at '%s'\n",
 474                         orig_str, tok);
 475                 SAFE_FREE(str);
 476                 TALLOC_FREE(frame);
 477                 return False;
 478         }
 479
 480         if (strncmp(tok, "0x", 2) == 0) {
 481                 if (sscanf(tok, "%i", &amask) != 1) {
 482                         printf("ACE '%s': bad hex number at '%s'\n",
 483                                 orig_str, tok);
 484                         SAFE_FREE(str);
 485                         TALLOC_FREE(frame);
 486                         return False;
 487                 }
 488                 goto done;
 489         }
 490
 491         for (v = standard_values; v->perm; v++) {
 492                 if (strcmp(tok, v->perm) == 0) {
 493                         amask = v->mask;
 494                         goto done;
 495                 }
 496         }
 497
 498         p = tok;
 499
 500         while(*p) {
 501                 bool found = False;
 502
 503                 for (v = special_values; v->perm; v++) {
 504                         if (v->perm[0] == *p) {
 505                                 amask |= v->mask;
 506                                 found = True;
 507                         }
 508                 }
 509
 510                 if (!found) {
 511                         printf("ACE '%s': bad permission value at '%s'\n",
 512                                 orig_str, p);
 513                         SAFE_FREE(str);
 514                         TALLOC_FREE(frame);
 515                         return False;
 516                 }
 517                 p++;
 518         }
 519
 520         if (*p) {
 521                 TALLOC_FREE(frame);
 522                 SAFE_FREE(str);
 523                 return False;
 524         }
 525
 526  done:
 527         mask = amask;
 528         init_sec_ace(ace, &sid, atype, mask, aflags);
 529         TALLOC_FREE(frame);
 530         SAFE_FREE(str);
 531         return True;
 532 }
 533
 534 /* add an ACE to a list of ACEs in a struct security_acl */
 535 static bool add_ace(struct security_acl **the_acl, struct security_ace *ace)
 536 {
 537         struct security_acl *new_ace;
 538         struct security_ace *aces;
 539         if (! *the_acl) {
 540                 return (((*the_acl) = make_sec_acl(talloc_tos(), 3, 1, ace))
 541                         != NULL);
 542         }
 543
 544         if (!(aces = SMB_CALLOC_ARRAY(struct security_ace, 1+(*the_acl)->num_aces))) {
 545                 return False;
 546         }
 547         memcpy(aces, (*the_acl)->aces, (*the_acl)->num_aces * sizeof(struct
 548         security_ace));
 549         memcpy(aces+(*the_acl)->num_aces, ace, sizeof(struct security_ace));
 550         new_ace = make_sec_acl(talloc_tos(),(*the_acl)->revision,1+(*the_acl)->num_aces, aces);
 551         SAFE_FREE(aces);
 552         (*the_acl) = new_ace;
 553         return True;
 554 }
 555
 556 /* parse a ascii version of a security descriptor */
 557 static struct security_descriptor *sec_desc_parse(TALLOC_CTX *ctx, struct cli_state *cli, char *str)
 558 {
 559         const char *p = str;
 560         char *tok;
 561         struct security_descriptor *ret = NULL;
 562         size_t sd_size;
 563         struct dom_sid *grp_sid=NULL, *owner_sid=NULL;
 564         struct security_acl *dacl=NULL;
 565         int revision=1;
 566
 567         while (next_token_talloc(ctx, &p, &tok, "\t,\r\n")) {
 568                 if (strncmp(tok,"REVISION:", 9) == 0) {
 569                         revision = strtol(tok+9, NULL, 16);
 570                         continue;
 571                 }
 572
 573                 if (strncmp(tok,"OWNER:", 6) == 0) {
 574                         if (owner_sid) {
 575                                 printf("Only specify owner once\n");
 576                                 goto done;
 577                         }
 578                         owner_sid = SMB_CALLOC_ARRAY(struct dom_sid, 1);
 579                         if (!owner_sid ||
 580                             !StringToSid(cli, owner_sid, tok+6)) {
 581                                 printf("Failed to parse owner sid\n");
 582                                 goto done;
 583                         }
 584                         continue;
 585                 }
 586
 587                 if (strncmp(tok,"GROUP:", 6) == 0) {
 588                         if (grp_sid) {
 589                                 printf("Only specify group once\n");
 590                                 goto done;
 591                         }
 592                         grp_sid = SMB_CALLOC_ARRAY(struct dom_sid, 1);
 593                         if (!grp_sid ||
 594                             !StringToSid(cli, grp_sid, tok+6)) {
 595                                 printf("Failed to parse group sid\n");
 596                                 goto done;
 597                         }
 598                         continue;
 599                 }
 600
 601                 if (strncmp(tok,"ACL:", 4) == 0) {
 602                         struct security_ace ace;
 603                         if (!parse_ace(cli, &ace, tok+4)) {
 604                                 goto done;
 605                         }
 606                         if(!add_ace(&dacl, &ace)) {
 607                                 printf("Failed to add ACL %s\n", tok);
 608                                 goto done;
 609                         }
 610                         continue;
 611                 }
 612
 613                 printf("Failed to parse token '%s' in security descriptor,\n", tok);
 614                 goto done;
 615         }
 616
 617         ret = make_sec_desc(ctx,revision, SEC_DESC_SELF_RELATIVE, owner_sid, grp_sid,
 618                             NULL, dacl, &sd_size);
 619
 620   done:
 621         SAFE_FREE(grp_sid);
 622         SAFE_FREE(owner_sid);
 623
 624         return ret;
 625 }
 626
 627
 628 /* print a ascii version of a security descriptor on a FILE handle */
 629 static void sec_desc_print(struct cli_state *cli, FILE *f, struct security_descriptor *sd)
 630 {
 631         fstring sidstr;
 632         uint32 i;
 633
 634         fprintf(f, "REVISION:%d\n", sd->revision);
 635         fprintf(f, "CONTROL:0x%x\n", sd->type);
 636
 637         /* Print owner and group sid */
 638
 639         if (sd->owner_sid) {
 640                 SidToString(cli, sidstr, sd->owner_sid);
 641         } else {
 642                 fstrcpy(sidstr, "");
 643         }
 644
 645         fprintf(f, "OWNER:%s\n", sidstr);
 646
 647         if (sd->group_sid) {
 648                 SidToString(cli, sidstr, sd->group_sid);
 649         } else {
 650                 fstrcpy(sidstr, "");
 651         }
 652
 653         fprintf(f, "GROUP:%s\n", sidstr);
 654
 655         /* Print aces */
 656         for (i = 0; sd->dacl && i < sd->dacl->num_aces; i++) {
 657                 struct security_ace *ace = &sd->dacl->aces[i];
 658                 fprintf(f, "ACL:");
 659                 print_ace(cli, f, ace);
 660                 fprintf(f, "\n");
 661         }
 662
 663 }
 664
 665 /*****************************************************
 666 get fileinfo for filename
 667 *******************************************************/
 668 static uint16 get_fileinfo(struct cli_state *cli, const char *filename)
 669 {
 670         uint16_t fnum = (uint16_t)-1;
 671         uint16 mode;
 672
 673         /* The desired access below is the only one I could find that works
 674            with NT4, W2KP and Samba */
 675
 676         if (!NT_STATUS_IS_OK(cli_ntcreate(cli, filename, 0, CREATE_ACCESS_READ,
 677                                           0, FILE_SHARE_READ|FILE_SHARE_WRITE,
 678                                           FILE_OPEN, 0x0, 0x0, &fnum))) {
 679                 printf("Failed to open %s: %s\n", filename, cli_errstr(cli));
 680         }
 681
 682         if (!cli_qfileinfo(cli, fnum, &mode, NULL, NULL, NULL,
 683                                              NULL, NULL, NULL)) {
 684                 printf("Failed to file info %s: %s\n", filename,
 685                                                        cli_errstr(cli));
 686         }
 687
 688         cli_close(cli, fnum);
 689
 690         return mode;
 691 }
 692
 693 /*****************************************************
 694 get sec desc for filename
 695 *******************************************************/
 696 static struct security_descriptor *get_secdesc(struct cli_state *cli, const char *filename)
 697 {
 698         uint16_t fnum = (uint16_t)-1;
 699         struct security_descriptor *sd;
 700
 701         /* The desired access below is the only one I could find that works
 702            with NT4, W2KP and Samba */
 703
 704         if (!NT_STATUS_IS_OK(cli_ntcreate(cli, filename, 0, CREATE_ACCESS_READ,
 705                                           0, FILE_SHARE_READ|FILE_SHARE_WRITE,
 706                                           FILE_OPEN, 0x0, 0x0, &fnum))) {
 707                 printf("Failed to open %s: %s\n", filename, cli_errstr(cli));
 708                 return NULL;
 709         }
 710
 711         sd = cli_query_secdesc(cli, fnum, talloc_tos());
 712
 713         cli_close(cli, fnum);
 714
 715         if (!sd) {
 716                 printf("Failed to get security descriptor\n");
 717                 return NULL;
 718         }
 719         return sd;
 720 }
 721
 722 /*****************************************************
 723 set sec desc for filename
 724 *******************************************************/
 725 static bool set_secdesc(struct cli_state *cli, const char *filename,
 726                         struct security_descriptor *sd)
 727 {
 728         uint16_t fnum = (uint16_t)-1;
 729         bool result=true;
 730
 731         /* The desired access below is the only one I could find that works
 732            with NT4, W2KP and Samba */
 733
 734         if (!NT_STATUS_IS_OK(cli_ntcreate(cli, filename, 0,
 735                                           WRITE_DAC_ACCESS|WRITE_OWNER_ACCESS,
 736                                           0, FILE_SHARE_READ|FILE_SHARE_WRITE,
 737                                           FILE_OPEN, 0x0, 0x0, &fnum))) {
 738                 printf("Failed to open %s: %s\n", filename, cli_errstr(cli));
 739                 return false;
 740         }
 741
 742         if (!cli_set_secdesc(cli, fnum, sd)) {
 743                 printf("ERROR: security description set failed: %s\n",
 744                        cli_errstr(cli));
 745                 result=false;
 746         }
 747
 748         cli_close(cli, fnum);
 749         return result;
 750 }
 751
 752 /*****************************************************
 753 dump the acls for a file
 754 *******************************************************/
 755 static int cacl_dump(struct cli_state *cli, const char *filename)
 756 {
 757         int result = EXIT_FAILED;
 758         struct security_descriptor *sd;
 759
 760         if (test_args)
 761                 return EXIT_OK;
 762
 763         sd = get_secdesc(cli, filename);
 764
 765         if (sd) {
 766                 if (sddl) {
 767                         printf("%s\n", sddl_encode(talloc_tos(), sd,
 768                                            get_global_sam_sid()));
 769                 } else {
 770                         sec_desc_print(cli, stdout, sd);
 771                 }
 772                 result = EXIT_OK;
 773         }
 774
 775         return result;
 776 }
 777
 778 /*****************************************************
 779 Change the ownership or group ownership of a file. Just
 780 because the NT docs say this can't be done :-). JRA.
 781 *******************************************************/
 782
 783 static int owner_set(struct cli_state *cli, enum chown_mode change_mode,
 784                         const char *filename, const char *new_username)
 785 {
 786         struct dom_sid sid;
 787         struct security_descriptor *sd, *old;
 788         size_t sd_size;
 789
 790         if (!StringToSid(cli, &sid, new_username))
 791                 return EXIT_PARSE_ERROR;
 792
 793         old = get_secdesc(cli, filename);
 794
 795         if (!old) {
 796                 return EXIT_FAILED;
 797         }
 798
 799         sd = make_sec_desc(talloc_tos(),old->revision, old->type,
 800                                 (change_mode == REQUEST_CHOWN) ? &sid : NULL,
 801                                 (change_mode == REQUEST_CHGRP) ? &sid : NULL,
 802                            NULL, NULL, &sd_size);
 803
 804         if (!set_secdesc(cli, filename, sd)) {
 805                 return EXIT_FAILED;
 806         }
 807
 808         return EXIT_OK;
 809 }
 810
 811
 812 /* The MSDN is contradictory over the ordering of ACE entries in an
 813    ACL.  However NT4 gives a "The information may have been modified
 814    by a computer running Windows NT 5.0" if denied ACEs do not appear
 815    before allowed ACEs. At
 816    http://technet.microsoft.com/en-us/library/cc781716.aspx the
 817    canonical order is specified as "Explicit Deny, Explicit Allow,
 818    Inherited ACEs unchanged" */
 819
 820 static int ace_compare(struct security_ace *ace1, struct security_ace *ace2)
 821 {
 822         if (sec_ace_equal(ace1, ace2))
 823                 return 0;
 824
 825         if ((ace1->flags & SEC_ACE_FLAG_INHERITED_ACE) &&
 826                         !(ace2->flags & SEC_ACE_FLAG_INHERITED_ACE))
 827                 return 1;
 828         if (!(ace1->flags & SEC_ACE_FLAG_INHERITED_ACE) &&
 829                         (ace2->flags & SEC_ACE_FLAG_INHERITED_ACE))
 830                 return -1;
 831         if ((ace1->flags & SEC_ACE_FLAG_INHERITED_ACE) &&
 832                         (ace2->flags & SEC_ACE_FLAG_INHERITED_ACE))
 833                 return ace1 - ace2;
 834
 835         if (ace1->type != ace2->type)
 836                 return ace2->type - ace1->type;
 837
 838         if (sid_compare(&ace1->trustee, &ace2->trustee))
 839                 return sid_compare(&ace1->trustee, &ace2->trustee);
 840
 841         if (ace1->flags != ace2->flags)
 842                 return ace1->flags - ace2->flags;
 843
 844         if (ace1->access_mask != ace2->access_mask)
 845                 return ace1->access_mask - ace2->access_mask;
 846
 847         if (ace1->size != ace2->size)
 848                 return ace1->size - ace2->size;
 849
 850         return memcmp(ace1, ace2, sizeof(struct security_ace));
 851 }
 852
 853 static void sort_acl(struct security_acl *the_acl)
 854 {
 855         uint32 i;
 856         if (!the_acl) return;
 857
 858         TYPESAFE_QSORT(the_acl->aces, the_acl->num_aces, ace_compare);
 859
 860         for (i=1;i<the_acl->num_aces;) {
 861                 if (sec_ace_equal(&the_acl->aces[i-1], &the_acl->aces[i])) {
 862                         int j;
 863                         for (j=i; j<the_acl->num_aces-1; j++) {
 864                                 the_acl->aces[j] = the_acl->aces[j+1];
 865                         }
 866                         the_acl->num_aces--;
 867                 } else {
 868                         i++;
 869                 }
 870         }
 871 }
 872
 873 /*****************************************************
 874 set the ACLs on a file given an ascii description
 875 *******************************************************/
 876
 877 static int cacl_set(struct cli_state *cli, const char *filename,
 878                     char *the_acl, enum acl_mode mode)
 879 {
 880         struct security_descriptor *sd, *old;
 881         uint32 i, j;
 882         size_t sd_size;
 883         int result = EXIT_OK;
 884
 885         if (sddl) {
 886                 sd = sddl_decode(talloc_tos(), the_acl, get_global_sam_sid());
 887         } else {
 888                 sd = sec_desc_parse(talloc_tos(), cli, the_acl);
 889         }
 890
 891         if (!sd) return EXIT_PARSE_ERROR;
 892         if (test_args) return EXIT_OK;
 893
 894         old = get_secdesc(cli, filename);
 895
 896         if (!old) {
 897                 return EXIT_FAILED;
 898         }
 899
 900         /* the logic here is rather more complex than I would like */
 901         switch (mode) {
 902         case SMB_ACL_DELETE:
 903                 for (i=0;sd->dacl && i<sd->dacl->num_aces;i++) {
 904                         bool found = False;
 905
 906                         for (j=0;old->dacl && j<old->dacl->num_aces;j++) {
 907                                 if (sec_ace_equal(&sd->dacl->aces[i],
 908                                                   &old->dacl->aces[j])) {
 909                                         uint32 k;
 910                                         for (k=j; k<old->dacl->num_aces-1;k++) {
 911                                                 old->dacl->aces[k] = old->dacl->aces[k+1];
 912                                         }
 913                                         old->dacl->num_aces--;
 914                                         found = True;
 915                                         break;
 916                                 }
 917                         }
 918
 919                         if (!found) {
 920                                 printf("ACL for ACE:");
 921                                 print_ace(cli, stdout, &sd->dacl->aces[i]);
 922                                 printf(" not found\n");
 923                         }
 924                 }
 925                 break;
 926
 927         case SMB_ACL_MODIFY:
 928                 for (i=0;sd->dacl && i<sd->dacl->num_aces;i++) {
 929                         bool found = False;
 930
 931                         for (j=0;old->dacl && j<old->dacl->num_aces;j++) {
 932                                 if (sid_equal(&sd->dacl->aces[i].trustee,
 933                                               &old->dacl->aces[j].trustee)) {
 934                                         old->dacl->aces[j] = sd->dacl->aces[i];
 935                                         found = True;
 936                                 }
 937                         }
 938
 939                         if (!found) {
 940                                 fstring str;
 941
 942                                 SidToString(cli, str,
 943                                             &sd->dacl->aces[i].trustee);
 944                                 printf("ACL for SID %s not found\n", str);
 945                         }
 946                 }
 947
 948                 if (sd->owner_sid) {
 949                         old->owner_sid = sd->owner_sid;
 950                 }
 951
 952                 if (sd->group_sid) {
 953                         old->group_sid = sd->group_sid;
 954                 }
 955
 956                 break;
 957
 958         case SMB_ACL_ADD:
 959                 for (i=0;sd->dacl && i<sd->dacl->num_aces;i++) {
 960                         add_ace(&old->dacl, &sd->dacl->aces[i]);
 961                 }
 962                 break;
 963
 964         case SMB_ACL_SET:
 965                 old = sd;
 966                 break;
 967         }
 968
 969         /* Denied ACE entries must come before allowed ones */
 970         sort_acl(old->dacl);
 971
 972         /* Create new security descriptor and set it */
 973
 974         /* We used to just have "WRITE_DAC_ACCESS" without WRITE_OWNER.
 975            But if we're sending an owner, even if it's the same as the one
 976            that already exists then W2K3 insists we open with WRITE_OWNER access.
 977            I need to check that setting a SD with no owner set works against WNT
 978            and W2K. JRA.
 979         */
 980
 981         sd = make_sec_desc(talloc_tos(),old->revision, old->type,
 982                            old->owner_sid, old->group_sid,
 983                            NULL, old->dacl, &sd_size);
 984
 985         if (!set_secdesc(cli, filename, sd)) {
 986                 result = EXIT_FAILED;
 987         }
 988
 989         return result;
 990 }
 991
 992 /*****************************************************
 993 set the inherit on a file
 994 *******************************************************/
 995 static int inherit(struct cli_state *cli, const char *filename,
 996                    const char *type)
 997 {
 998         struct security_descriptor *old,*sd;
 999         uint32 oldattr;
1000         size_t sd_size;
1001         int result = EXIT_OK;
1002
1003         old = get_secdesc(cli, filename);
1004
1005         if (!old) {
1006                 return EXIT_FAILED;
1007         }
1008
1009         oldattr = get_fileinfo(cli,filename);
1010
1011         if (strcmp(type,"allow")==0) {
1012                 if ((old->type & SEC_DESC_DACL_PROTECTED) ==
1013                     SEC_DESC_DACL_PROTECTED) {
1014                         int i;
1015                         char *parentname,*temp;
1016                         struct security_descriptor *parent;
1017                         temp = talloc_strdup(talloc_tos(), filename);
1018
1019                         old->type=old->type & (~SEC_DESC_DACL_PROTECTED);
1020
1021                         /* look at parent and copy in all its inheritable ACL's. */
1022                         string_replace(temp, '\\', '/');
1023                         if (!parent_dirname(talloc_tos(),temp,&parentname,NULL)) {
1024                                 return EXIT_FAILED;
1025                         }
1026                         string_replace(parentname, '/', '\\');
1027                         parent = get_secdesc(cli,parentname);
1028                         for (i=0;i<parent->dacl->num_aces;i++) {
1029                                 struct security_ace *ace=&parent->dacl->aces[i];
1030                                 /* Add inherited flag to all aces */
1031                                 ace->flags=ace->flags|
1032                                            SEC_ACE_FLAG_INHERITED_ACE;
1033                                 if ((oldattr & aDIR) == aDIR) {
1034                                         if ((ace->flags & SEC_ACE_FLAG_CONTAINER_INHERIT) ==
1035                                             SEC_ACE_FLAG_CONTAINER_INHERIT) {
1036                                                 add_ace(&old->dacl, ace);
1037                                         }
1038                                 } else {
1039                                         if ((ace->flags & SEC_ACE_FLAG_OBJECT_INHERIT) ==
1040                                             SEC_ACE_FLAG_OBJECT_INHERIT) {
1041                                                 /* clear flags for files */
1042                                                 ace->flags=0;
1043                                                 add_ace(&old->dacl, ace);
1044                                         }
1045                                 }
1046                         }
1047                 } else {
1048                         printf("Already set to inheritable permissions.\n");
1049                         return EXIT_FAILED;
1050                 }
1051         } else if (strcmp(type,"remove")==0) {
1052                 if ((old->type & SEC_DESC_DACL_PROTECTED) !=
1053                     SEC_DESC_DACL_PROTECTED) {
1054                         old->type=old->type | SEC_DESC_DACL_PROTECTED;
1055
1056                         /* remove all inherited ACL's. */
1057                         if (old->dacl) {
1058                                 int i;
1059                                 struct security_acl *temp=old->dacl;
1060                                 old->dacl=make_sec_acl(talloc_tos(), 3, 0, NULL);
1061                                 for (i=temp->num_aces-1;i>=0;i--) {
1062                                         struct security_ace *ace=&temp->aces[i];
1063                                         /* Remove all ace with INHERITED flag set */
1064                                         if ((ace->flags & SEC_ACE_FLAG_INHERITED_ACE) !=
1065                                             SEC_ACE_FLAG_INHERITED_ACE) {
1066                                                 add_ace(&old->dacl,ace);
1067                                         }
1068                                 }
1069                         }
1070                 } else {
1071                         printf("Already set to no inheritable permissions.\n");
1072                         return EXIT_FAILED;
1073                 }
1074         } else if (strcmp(type,"copy")==0) {
1075                 if ((old->type & SEC_DESC_DACL_PROTECTED) !=
1076                     SEC_DESC_DACL_PROTECTED) {
1077                         old->type=old->type | SEC_DESC_DACL_PROTECTED;
1078
1079                         /* convert all inherited ACL's to non inherated ACL's. */
1080                         if (old->dacl) {
1081                                 int i;
1082                                 for (i=0;i<old->dacl->num_aces;i++) {
1083                                         struct security_ace *ace=&old->dacl->aces[i];
1084                                         /* Remove INHERITED FLAG from all aces */
1085                                         ace->flags=ace->flags&(~SEC_ACE_FLAG_INHERITED_ACE);
1086                                 }
1087                         }
1088                 } else {
1089                         printf("Already set to no inheritable permissions.\n");
1090                         return EXIT_FAILED;
1091                 }
1092         }
1093
1094         /* Denied ACE entries must come before allowed ones */
1095         sort_acl(old->dacl);
1096
1097         sd = make_sec_desc(talloc_tos(),old->revision, old->type,
1098                            old->owner_sid, old->group_sid,
1099                            NULL, old->dacl, &sd_size);
1100
1101         if (!set_secdesc(cli, filename, sd)) {
1102                 result = EXIT_FAILED;
1103         }
1104
1105         return result;
1106 }
1107
1108 /*****************************************************
1109  Return a connection to a server.
1110 *******************************************************/
1111 static struct cli_state *connect_one(struct user_auth_info *auth_info,
1112                                      const char *server, const char *share)
1113 {
1114         struct cli_state *c = NULL;
1115         struct sockaddr_storage ss;
1116         NTSTATUS nt_status;
1117         uint32_t flags = 0;
1118
1119         zero_sockaddr(&ss);
1120
1121         if (get_cmdline_auth_info_use_kerberos(auth_info)) {
1122                 flags |= CLI_FULL_CONNECTION_USE_KERBEROS |
1123                          CLI_FULL_CONNECTION_FALLBACK_AFTER_KERBEROS;
1124         }
1125
1126         if (get_cmdline_auth_info_use_machine_account(auth_info) &&
1127             !set_cmdline_auth_info_machine_account_creds(auth_info)) {
1128                 return NULL;
1129         }
1130
1131         set_cmdline_auth_info_getpass(auth_info);
1132
1133         nt_status = cli_full_connection(&c, global_myname(), server,
1134                                 &ss, 0,
1135                                 share, "?????",
1136                                 get_cmdline_auth_info_username(auth_info),
1137                                 lp_workgroup(),
1138                                 get_cmdline_auth_info_password(auth_info),
1139                                 flags,
1140                                 get_cmdline_auth_info_signing_state(auth_info),
1141                                 NULL);
1142         if (!NT_STATUS_IS_OK(nt_status)) {
1143                 DEBUG(0,("cli_full_connection failed! (%s)\n", nt_errstr(nt_status)));
1144                 return NULL;
1145         }
1146
1147         if (get_cmdline_auth_info_smb_encrypt(auth_info)) {
1148                 nt_status = cli_cm_force_encryption(c,
1149                                         get_cmdline_auth_info_username(auth_info),
1150                                         get_cmdline_auth_info_password(auth_info),
1151                                         lp_workgroup(),
1152                                         share);
1153                 if (!NT_STATUS_IS_OK(nt_status)) {
1154                         cli_shutdown(c);
1155                         c = NULL;
1156                 }
1157         }
1158
1159         return c;
1160 }
1161
1162 /****************************************************************************
1163   main program
1164 ****************************************************************************/
1165  int main(int argc, const char *argv[])
1166 {
1167         char *share;
1168         int opt;
1169         enum acl_mode mode = SMB_ACL_SET;
1170         static char *the_acl = NULL;
1171         enum chown_mode change_mode = REQUEST_NONE;
1172         int result;
1173         char *path;
1174         char *filename = NULL;
1175         poptContext pc;
1176         struct poptOption long_options[] = {
1177                 POPT_AUTOHELP
1178                 { "delete", 'D', POPT_ARG_STRING, NULL, 'D', "Delete an acl", "ACL" },
1179                 { "modify", 'M', POPT_ARG_STRING, NULL, 'M', "Modify an acl", "ACL" },
1180                 { "add", 'a', POPT_ARG_STRING, NULL, 'a', "Add an acl", "ACL" },
1181                 { "set", 'S', POPT_ARG_STRING, NULL, 'S', "Set acls", "ACLS" },
1182                 { "chown", 'C', POPT_ARG_STRING, NULL, 'C', "Change ownership of a file", "USERNAME" },
1183                 { "chgrp", 'G', POPT_ARG_STRING, NULL, 'G', "Change group ownership of a file", "GROUPNAME" },
1184                 { "inherit", 'I', POPT_ARG_STRING, NULL, 'I', "Inherit allow|remove|copy" },
1185                 { "numeric", 0, POPT_ARG_NONE, &numeric, 1, "Don't resolve sids or masks to names" },
1186                 { "sddl", 0, POPT_ARG_NONE, &sddl, 1, "Output and input acls in sddl format" },
1187                 { "test-args", 't', POPT_ARG_NONE, &test_args, 1, "Test arguments"},
1188                 POPT_COMMON_SAMBA
1189                 POPT_COMMON_CONNECTION
1190                 POPT_COMMON_CREDENTIALS
1191                 POPT_TABLEEND
1192         };
1193
1194         struct cli_state *cli;
1195         TALLOC_CTX *frame = talloc_stackframe();
1196         const char *owner_username = "";
1197         char *server;
1198         struct user_auth_info *auth_info;
1199
1200         load_case_tables();
1201
1202
1203         /* set default debug level to 1 regardless of what smb.conf sets */
1204         setup_logging( "smbcacls", True );
1205         DEBUGLEVEL_CLASS[DBGC_ALL] = 1;
1206         dbf = x_stderr;
1207         x_setbuf( x_stderr, NULL );
1208         AllowDebugChange = false;
1209
1210         setlinebuf(stdout);
1211
1212         lp_load(get_dyn_CONFIGFILE(),True,False,False,True);
1213         load_interfaces();
1214
1215         auth_info = user_auth_info_init(frame);
1216         if (auth_info == NULL) {
1217                 exit(1);
1218         }
1219         popt_common_set_auth_info(auth_info);
1220
1221         pc = poptGetContext("smbcacls", argc, argv, long_options, 0);
1222
1223         poptSetOtherOptionHelp(pc, "//server1/share1 filename\nACLs look like: "
1224                 "'ACL:user:[ALLOWED|DENIED]/flags/permissions'");
1225
1226         while ((opt = poptGetNextOpt(pc)) != -1) {
1227                 switch (opt) {
1228                 case 'S':
1229                         the_acl = smb_xstrdup(poptGetOptArg(pc));
1230                         mode = SMB_ACL_SET;
1231                         break;
1232
1233                 case 'D':
1234                         the_acl = smb_xstrdup(poptGetOptArg(pc));
1235                         mode = SMB_ACL_DELETE;
1236                         break;
1237
1238                 case 'M':
1239                         the_acl = smb_xstrdup(poptGetOptArg(pc));
1240                         mode = SMB_ACL_MODIFY;
1241                         break;
1242
1243                 case 'a':
1244                         the_acl = smb_xstrdup(poptGetOptArg(pc));
1245                         mode = SMB_ACL_ADD;
1246                         break;
1247
1248                 case 'C':
1249                         owner_username = poptGetOptArg(pc);
1250                         change_mode = REQUEST_CHOWN;
1251                         break;
1252
1253                 case 'G':
1254                         owner_username = poptGetOptArg(pc);
1255                         change_mode = REQUEST_CHGRP;
1256                         break;
1257
1258                 case 'I':
1259                         owner_username = poptGetOptArg(pc);
1260                         change_mode = REQUEST_INHERIT;
1261                         break;
1262                 }
1263         }
1264
1265         /* Make connection to server */
1266         if(!poptPeekArg(pc)) {
1267                 poptPrintUsage(pc, stderr, 0);
1268                 return -1;
1269         }
1270
1271         path = talloc_strdup(frame, poptGetArg(pc));
1272         if (!path) {
1273                 return -1;
1274         }
1275
1276         if(!poptPeekArg(pc)) {
1277                 poptPrintUsage(pc, stderr, 0);
1278                 return -1;
1279         }
1280
1281         filename = talloc_strdup(frame, poptGetArg(pc));
1282         if (!filename) {
1283                 return -1;
1284         }
1285
1286         string_replace(path,'/','\\');
1287
1288         server = talloc_strdup(frame, path+2);
1289         if (!server) {
1290                 return -1;
1291         }
1292         share = strchr_m(server,'\\');
1293         if (!share) {
1294                 printf("Invalid argument: %s\n", share);
1295                 return -1;
1296         }
1297
1298         *share = 0;
1299         share++;
1300
1301         if (!test_args) {
1302                 cli = connect_one(auth_info, server, share);
1303                 if (!cli) {
1304                         exit(EXIT_FAILED);
1305                 }
1306         } else {
1307                 exit(0);
1308         }
1309
1310         string_replace(filename, '/', '\\');
1311         if (filename[0] != '\\') {
1312                 filename = talloc_asprintf(frame,
1313                                 "\\%s",
1314                                 filename);
1315                 if (!filename) {
1316                         return -1;
1317                 }
1318         }
1319
1320         /* Perform requested action */
1321
1322         if (change_mode == REQUEST_INHERIT) {
1323                 result = inherit(cli, filename, owner_username);
1324         } else if (change_mode != REQUEST_NONE) {
1325                 result = owner_set(cli, change_mode, filename, owner_username);
1326         } else if (the_acl) {
1327                 result = cacl_set(cli, filename, the_acl, mode);
1328         } else {
1329                 result = cacl_dump(cli, filename);
1330         }
1331
1332         TALLOC_FREE(frame);
1333
1334         return result;
1335 }