source3/libsmb/libsmb_xattr.c

   1 /*
   2    Unix SMB/Netbios implementation.
   3    SMB client library implementation
   4    Copyright (C) Andrew Tridgell 1998
   5    Copyright (C) Richard Sharpe 2000, 2002
   6    Copyright (C) John Terpstra 2000
   7    Copyright (C) Tom Jansen (Ninja ISD) 2002
   8    Copyright (C) Derrell Lipman 2003-2008
   9    Copyright (C) Jeremy Allison 2007, 2008
  10
  11    This program is free software; you can redistribute it and/or modify
  12    it under the terms of the GNU General Public License as published by
  13    the Free Software Foundation; either version 3 of the License, or
  14    (at your option) any later version.
  15
  16    This program is distributed in the hope that it will be useful,
  17    but WITHOUT ANY WARRANTY; without even the implied warranty of
  18    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19    GNU General Public License for more details.
  20
  21    You should have received a copy of the GNU General Public License
  22    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  23 */
  24
  25 #include "includes.h"
  26 #include "libsmb/libsmb.h"
  27 #include "libsmbclient.h"
  28 #include "libsmb_internal.h"
  29 #include "../librpc/gen_ndr/ndr_lsa.h"
  30 #include "rpc_client/rpc_client.h"
  31 #include "rpc_client/cli_lsarpc.h"
  32 #include "../libcli/security/security.h"
  33
  34 /*
  35  * Find an lsa pipe handle associated with a cli struct.
  36  */
  37 static struct rpc_pipe_client *
  38 find_lsa_pipe_hnd(struct cli_state *ipc_cli)
  39 {
  40         struct rpc_pipe_client *pipe_hnd;
  41
  42         for (pipe_hnd = ipc_cli->pipe_list;
  43              pipe_hnd;
  44              pipe_hnd = pipe_hnd->next) {
  45                 if (ndr_syntax_id_equal(&pipe_hnd->abstract_syntax,
  46                                         &ndr_table_lsarpc.syntax_id)) {
  47                         return pipe_hnd;
  48                 }
  49         }
  50         return NULL;
  51 }
  52
  53 /*
  54  * Sort ACEs according to the documentation at
  55  * http://support.microsoft.com/kb/269175, at least as far as it defines the
  56  * order.
  57  */
  58
  59 static int
  60 ace_compare(struct security_ace *ace1,
  61             struct security_ace *ace2)
  62 {
  63         bool b1;
  64         bool b2;
  65
  66         /* If the ACEs are equal, we have nothing more to do. */
  67         if (sec_ace_equal(ace1, ace2)) {
  68                 return 0;
  69         }
  70
  71         /* Inherited follow non-inherited */
  72         b1 = ((ace1->flags & SEC_ACE_FLAG_INHERITED_ACE) != 0);
  73         b2 = ((ace2->flags & SEC_ACE_FLAG_INHERITED_ACE) != 0);
  74         if (b1 != b2) {
  75                 return (b1 ? 1 : -1);
  76         }
  77
  78         /*
  79          * What shall we do with AUDITs and ALARMs?  It's undefined.  We'll
  80          * sort them after DENY and ALLOW.
  81          */
  82         b1 = (ace1->type != SEC_ACE_TYPE_ACCESS_ALLOWED &&
  83               ace1->type != SEC_ACE_TYPE_ACCESS_ALLOWED_OBJECT &&
  84               ace1->type != SEC_ACE_TYPE_ACCESS_DENIED &&
  85               ace1->type != SEC_ACE_TYPE_ACCESS_DENIED_OBJECT);
  86         b2 = (ace2->type != SEC_ACE_TYPE_ACCESS_ALLOWED &&
  87               ace2->type != SEC_ACE_TYPE_ACCESS_ALLOWED_OBJECT &&
  88               ace2->type != SEC_ACE_TYPE_ACCESS_DENIED &&
  89               ace2->type != SEC_ACE_TYPE_ACCESS_DENIED_OBJECT);
  90         if (b1 != b2) {
  91                 return (b1 ? 1 : -1);
  92         }
  93
  94         /* Allowed ACEs follow denied ACEs */
  95         b1 = (ace1->type == SEC_ACE_TYPE_ACCESS_ALLOWED ||
  96               ace1->type == SEC_ACE_TYPE_ACCESS_ALLOWED_OBJECT);
  97         b2 = (ace2->type == SEC_ACE_TYPE_ACCESS_ALLOWED ||
  98               ace2->type == SEC_ACE_TYPE_ACCESS_ALLOWED_OBJECT);
  99         if (b1 != b2) {
 100                 return (b1 ? 1 : -1);
 101         }
 102
 103         /*
 104          * ACEs applying to an entity's object follow those applying to the
 105          * entity itself
 106          */
 107         b1 = (ace1->type == SEC_ACE_TYPE_ACCESS_ALLOWED_OBJECT ||
 108               ace1->type == SEC_ACE_TYPE_ACCESS_DENIED_OBJECT);
 109         b2 = (ace2->type == SEC_ACE_TYPE_ACCESS_ALLOWED_OBJECT ||
 110               ace2->type == SEC_ACE_TYPE_ACCESS_DENIED_OBJECT);
 111         if (b1 != b2) {
 112                 return (b1 ? 1 : -1);
 113         }
 114
 115         /*
 116          * If we get this far, the ACEs are similar as far as the
 117          * characteristics we typically care about (those defined by the
 118          * referenced MS document).  We'll now sort by characteristics that
 119          * just seems reasonable.
 120          */
 121
 122         if (ace1->type != ace2->type) {
 123                 return ace2->type - ace1->type;
 124         }
 125
 126         if (dom_sid_compare(&ace1->trustee, &ace2->trustee)) {
 127                 return dom_sid_compare(&ace1->trustee, &ace2->trustee);
 128         }
 129
 130         if (ace1->flags != ace2->flags) {
 131                 return ace1->flags - ace2->flags;
 132         }
 133
 134         if (ace1->access_mask != ace2->access_mask) {
 135                 return ace1->access_mask - ace2->access_mask;
 136         }
 137
 138         if (ace1->size != ace2->size) {
 139                 return ace1->size - ace2->size;
 140         }
 141
 142         return memcmp(ace1, ace2, sizeof(struct security_ace));
 143 }
 144
 145
 146 static void
 147 sort_acl(struct security_acl *the_acl)
 148 {
 149         uint32 i;
 150         if (!the_acl) return;
 151
 152         TYPESAFE_QSORT(the_acl->aces, the_acl->num_aces, ace_compare);
 153
 154         for (i=1;i<the_acl->num_aces;) {
 155                 if (sec_ace_equal(&the_acl->aces[i-1], &the_acl->aces[i])) {
 156                         int j;
 157                         for (j=i; j<the_acl->num_aces-1; j++) {
 158                                 the_acl->aces[j] = the_acl->aces[j+1];
 159                         }
 160                         the_acl->num_aces--;
 161                 } else {
 162                         i++;
 163                 }
 164         }
 165 }
 166
 167 /* convert a SID to a string, either numeric or username/group */
 168 static void
 169 convert_sid_to_string(struct cli_state *ipc_cli,
 170                       struct policy_handle *pol,
 171                       fstring str,
 172                       bool numeric,
 173                       struct dom_sid *sid)
 174 {
 175         char **domains = NULL;
 176         char **names = NULL;
 177         enum lsa_SidType *types = NULL;
 178         struct rpc_pipe_client *pipe_hnd = find_lsa_pipe_hnd(ipc_cli);
 179         TALLOC_CTX *ctx;
 180
 181         sid_to_fstring(str, sid);
 182
 183         if (numeric) {
 184                 return;     /* no lookup desired */
 185         }
 186
 187         if (!pipe_hnd) {
 188                 return;
 189         }
 190
 191         /* Ask LSA to convert the sid to a name */
 192
 193         ctx = talloc_stackframe();
 194
 195         if (!NT_STATUS_IS_OK(rpccli_lsa_lookup_sids(pipe_hnd, ctx,
 196                                                     pol, 1, sid, &domains,
 197                                                     &names, &types)) ||
 198             !domains || !domains[0] || !names || !names[0]) {
 199                 TALLOC_FREE(ctx);
 200                 return;
 201         }
 202
 203         /* Converted OK */
 204
 205         slprintf(str, sizeof(fstring) - 1, "%s%s%s",
 206                  domains[0], lp_winbind_separator(),
 207                  names[0]);
 208
 209         TALLOC_FREE(ctx);
 210 }
 211
 212 /* convert a string to a SID, either numeric or username/group */
 213 static bool
 214 convert_string_to_sid(struct cli_state *ipc_cli,
 215                       struct policy_handle *pol,
 216                       bool numeric,
 217                       struct dom_sid *sid,
 218                       const char *str)
 219 {
 220         enum lsa_SidType *types = NULL;
 221         struct dom_sid *sids = NULL;
 222         bool result = True;
 223         TALLOC_CTX *ctx = NULL;
 224         struct rpc_pipe_client *pipe_hnd = find_lsa_pipe_hnd(ipc_cli);
 225
 226         if (!pipe_hnd) {
 227                 return False;
 228         }
 229
 230         if (numeric) {
 231                 if (strncmp(str, "S-", 2) == 0) {
 232                         return string_to_sid(sid, str);
 233                 }
 234
 235                 result = False;
 236                 goto done;
 237         }
 238
 239         ctx = talloc_stackframe();
 240         if (!NT_STATUS_IS_OK(rpccli_lsa_lookup_names(pipe_hnd, ctx,
 241                                                      pol, 1, &str,
 242                                                      NULL, 1, &sids,
 243                                                      &types))) {
 244                 result = False;
 245                 goto done;
 246         }
 247
 248         sid_copy(sid, &sids[0]);
 249 done:
 250         TALLOC_FREE(ctx);
 251         return result;
 252 }
 253
 254
 255 /* parse an struct security_ace in the same format as print_ace() */
 256 static bool
 257 parse_ace(struct cli_state *ipc_cli,
 258           struct policy_handle *pol,
 259           struct security_ace *ace,
 260           bool numeric,
 261           char *str)
 262 {
 263         char *p;
 264         const char *cp;
 265         char *tok;
 266         unsigned int atype;
 267         unsigned int aflags;
 268         unsigned int amask;
 269         struct dom_sid sid;
 270         uint32_t mask;
 271         const struct perm_value *v;
 272         struct perm_value {
 273                 const char perm[7];
 274                 uint32 mask;
 275         };
 276         TALLOC_CTX *frame = talloc_stackframe();
 277
 278         /* These values discovered by inspection */
 279         static const struct perm_value special_values[] = {
 280                 { "R", 0x00120089 },
 281                 { "W", 0x00120116 },
 282                 { "X", 0x001200a0 },
 283                 { "D", 0x00010000 },
 284                 { "P", 0x00040000 },
 285                 { "O", 0x00080000 },
 286                 { "", 0 },
 287         };
 288
 289         static const struct perm_value standard_values[] = {
 290                 { "READ",   0x001200a9 },
 291                 { "CHANGE", 0x001301bf },
 292                 { "FULL",   0x001f01ff },
 293                 { "", 0 },
 294         };
 295
 296         ZERO_STRUCTP(ace);
 297         p = strchr_m(str,':');
 298         if (!p) {
 299                 TALLOC_FREE(frame);
 300                 return False;
 301         }
 302         *p = '\0';
 303         p++;
 304         /* Try to parse numeric form */
 305
 306         if (sscanf(p, "%i/%i/%i", &atype, &aflags, &amask) == 3 &&
 307             convert_string_to_sid(ipc_cli, pol, numeric, &sid, str)) {
 308                 goto done;
 309         }
 310
 311         /* Try to parse text form */
 312
 313         if (!convert_string_to_sid(ipc_cli, pol, numeric, &sid, str)) {
 314                 TALLOC_FREE(frame);
 315                 return false;
 316         }
 317
 318         cp = p;
 319         if (!next_token_talloc(frame, &cp, &tok, "/")) {
 320                 TALLOC_FREE(frame);
 321                 return false;
 322         }
 323
 324         if (strncasecmp_m(tok, "ALLOWED", strlen("ALLOWED")) == 0) {
 325                 atype = SEC_ACE_TYPE_ACCESS_ALLOWED;
 326         } else if (strncasecmp_m(tok, "DENIED", strlen("DENIED")) == 0) {
 327                 atype = SEC_ACE_TYPE_ACCESS_DENIED;
 328         } else {
 329                 TALLOC_FREE(frame);
 330                 return false;
 331         }
 332
 333         /* Only numeric form accepted for flags at present */
 334
 335         if (!(next_token_talloc(frame, &cp, &tok, "/") &&
 336               sscanf(tok, "%i", &aflags))) {
 337                 TALLOC_FREE(frame);
 338                 return false;
 339         }
 340
 341         if (!next_token_talloc(frame, &cp, &tok, "/")) {
 342                 TALLOC_FREE(frame);
 343                 return false;
 344         }
 345
 346         if (strncmp(tok, "0x", 2) == 0) {
 347                 if (sscanf(tok, "%i", &amask) != 1) {
 348                         TALLOC_FREE(frame);
 349                         return false;
 350                 }
 351                 goto done;
 352         }
 353
 354         for (v = standard_values; v->perm; v++) {
 355                 if (strcmp(tok, v->perm) == 0) {
 356                         amask = v->mask;
 357                         goto done;
 358                 }
 359         }
 360
 361         p = tok;
 362
 363         while(*p) {
 364                 bool found = False;
 365
 366                 for (v = special_values; v->perm; v++) {
 367                         if (v->perm[0] == *p) {
 368                                 amask |= v->mask;
 369                                 found = True;
 370                         }
 371                 }
 372
 373                 if (!found) {
 374                         TALLOC_FREE(frame);
 375                         return false;
 376                 }
 377                 p++;
 378         }
 379
 380         if (*p) {
 381                 TALLOC_FREE(frame);
 382                 return false;
 383         }
 384
 385 done:
 386         mask = amask;
 387         init_sec_ace(ace, &sid, atype, mask, aflags);
 388         TALLOC_FREE(frame);
 389         return true;
 390 }
 391
 392 /* add an struct security_ace to a list of struct security_aces in a struct security_acl */
 393 static bool
 394 add_ace(struct security_acl **the_acl,
 395         struct security_ace *ace,
 396         TALLOC_CTX *ctx)
 397 {
 398         struct security_acl *newacl;
 399         struct security_ace *aces;
 400
 401         if (! *the_acl) {
 402                 (*the_acl) = make_sec_acl(ctx, 3, 1, ace);
 403                 return True;
 404         }
 405
 406         if ((aces = SMB_CALLOC_ARRAY(struct security_ace,
 407                                      1+(*the_acl)->num_aces)) == NULL) {
 408                 return False;
 409         }
 410         memcpy(aces, (*the_acl)->aces, (*the_acl)->num_aces * sizeof(struct security_ace));
 411         memcpy(aces+(*the_acl)->num_aces, ace, sizeof(struct security_ace));
 412         newacl = make_sec_acl(ctx, (*the_acl)->revision,
 413                               1+(*the_acl)->num_aces, aces);
 414         SAFE_FREE(aces);
 415         (*the_acl) = newacl;
 416         return True;
 417 }
 418
 419
 420 /* parse a ascii version of a security descriptor */
 421 static struct security_descriptor *
 422 sec_desc_parse(TALLOC_CTX *ctx,
 423                struct cli_state *ipc_cli,
 424                struct policy_handle *pol,
 425                bool numeric,
 426                const char *str)
 427 {
 428         const char *p = str;
 429         char *tok;
 430         struct security_descriptor *ret = NULL;
 431         size_t sd_size;
 432         struct dom_sid *group_sid=NULL;
 433         struct dom_sid *owner_sid=NULL;
 434         struct security_acl *dacl=NULL;
 435         int revision=1;
 436
 437         while (next_token_talloc(ctx, &p, &tok, "\t,\r\n")) {
 438
 439                 if (strncasecmp_m(tok,"REVISION:", 9) == 0) {
 440                         revision = strtol(tok+9, NULL, 16);
 441                         continue;
 442                 }
 443
 444                 if (strncasecmp_m(tok,"OWNER:", 6) == 0) {
 445                         if (owner_sid) {
 446                                 DEBUG(5,("OWNER specified more than once!\n"));
 447                                 goto done;
 448                         }
 449                         owner_sid = SMB_CALLOC_ARRAY(struct dom_sid, 1);
 450                         if (!owner_sid ||
 451                             !convert_string_to_sid(ipc_cli, pol,
 452                                                    numeric,
 453                                                    owner_sid, tok+6)) {
 454                                 DEBUG(5, ("Failed to parse owner sid\n"));
 455                                 goto done;
 456                         }
 457                         continue;
 458                 }
 459
 460                 if (strncasecmp_m(tok,"OWNER+:", 7) == 0) {
 461                         if (owner_sid) {
 462                                 DEBUG(5,("OWNER specified more than once!\n"));
 463                                 goto done;
 464                         }
 465                         owner_sid = SMB_CALLOC_ARRAY(struct dom_sid, 1);
 466                         if (!owner_sid ||
 467                             !convert_string_to_sid(ipc_cli, pol,
 468                                                    False,
 469                                                    owner_sid, tok+7)) {
 470                                 DEBUG(5, ("Failed to parse owner sid\n"));
 471                                 goto done;
 472                         }
 473                         continue;
 474                 }
 475
 476                 if (strncasecmp_m(tok,"GROUP:", 6) == 0) {
 477                         if (group_sid) {
 478                                 DEBUG(5,("GROUP specified more than once!\n"));
 479                                 goto done;
 480                         }
 481                         group_sid = SMB_CALLOC_ARRAY(struct dom_sid, 1);
 482                         if (!group_sid ||
 483                             !convert_string_to_sid(ipc_cli, pol,
 484                                                    numeric,
 485                                                    group_sid, tok+6)) {
 486                                 DEBUG(5, ("Failed to parse group sid\n"));
 487                                 goto done;
 488                         }
 489                         continue;
 490                 }
 491
 492                 if (strncasecmp_m(tok,"GROUP+:", 7) == 0) {
 493                         if (group_sid) {
 494                                 DEBUG(5,("GROUP specified more than once!\n"));
 495                                 goto done;
 496                         }
 497                         group_sid = SMB_CALLOC_ARRAY(struct dom_sid, 1);
 498                         if (!group_sid ||
 499                             !convert_string_to_sid(ipc_cli, pol,
 500                                                    False,
 501                                                    group_sid, tok+6)) {
 502                                 DEBUG(5, ("Failed to parse group sid\n"));
 503                                 goto done;
 504                         }
 505                         continue;
 506                 }
 507
 508                 if (strncasecmp_m(tok,"ACL:", 4) == 0) {
 509                         struct security_ace ace;
 510                         if (!parse_ace(ipc_cli, pol, &ace, numeric, tok+4)) {
 511                                 DEBUG(5, ("Failed to parse ACL %s\n", tok));
 512                                 goto done;
 513                         }
 514                         if(!add_ace(&dacl, &ace, ctx)) {
 515                                 DEBUG(5, ("Failed to add ACL %s\n", tok));
 516                                 goto done;
 517                         }
 518                         continue;
 519                 }
 520
 521                 if (strncasecmp_m(tok,"ACL+:", 5) == 0) {
 522                         struct security_ace ace;
 523                         if (!parse_ace(ipc_cli, pol, &ace, False, tok+5)) {
 524                                 DEBUG(5, ("Failed to parse ACL %s\n", tok));
 525                                 goto done;
 526                         }
 527                         if(!add_ace(&dacl, &ace, ctx)) {
 528                                 DEBUG(5, ("Failed to add ACL %s\n", tok));
 529                                 goto done;
 530                         }
 531                         continue;
 532                 }
 533
 534                 DEBUG(5, ("Failed to parse security descriptor\n"));
 535                 goto done;
 536         }
 537
 538         ret = make_sec_desc(ctx, revision, SEC_DESC_SELF_RELATIVE,
 539                             owner_sid, group_sid, NULL, dacl, &sd_size);
 540
 541 done:
 542         SAFE_FREE(group_sid);
 543         SAFE_FREE(owner_sid);
 544         return ret;
 545 }
 546
 547
 548 /* Obtain the current dos attributes */
 549 static DOS_ATTR_DESC *
 550 dos_attr_query(SMBCCTX *context,
 551                TALLOC_CTX *ctx,
 552                const char *filename,
 553                SMBCSRV *srv)
 554 {
 555         struct timespec create_time_ts;
 556         struct timespec write_time_ts;
 557         struct timespec access_time_ts;
 558         struct timespec change_time_ts;
 559         off_t size = 0;
 560         uint16 mode = 0;
 561         SMB_INO_T inode = 0;
 562         DOS_ATTR_DESC *ret;
 563
 564         ret = talloc(ctx, DOS_ATTR_DESC);
 565         if (!ret) {
 566                 errno = ENOMEM;
 567                 return NULL;
 568         }
 569
 570         /* Obtain the DOS attributes */
 571         if (!SMBC_getatr(context, srv, filename,
 572                          &mode, &size,
 573                          &create_time_ts,
 574                          &access_time_ts,
 575                          &write_time_ts,
 576                          &change_time_ts,
 577                          &inode)) {
 578                 errno = SMBC_errno(context, srv->cli);
 579                 DEBUG(5, ("dos_attr_query Failed to query old attributes\n"));
 580                 TALLOC_FREE(ret);
 581                 return NULL;
 582         }
 583
 584         ret->mode = mode;
 585         ret->size = size;
 586         ret->create_time = convert_timespec_to_time_t(create_time_ts);
 587         ret->access_time = convert_timespec_to_time_t(access_time_ts);
 588         ret->write_time = convert_timespec_to_time_t(write_time_ts);
 589         ret->change_time = convert_timespec_to_time_t(change_time_ts);
 590         ret->inode = inode;
 591
 592         return ret;
 593 }
 594
 595
 596 /* parse a ascii version of a security descriptor */
 597 static void
 598 dos_attr_parse(SMBCCTX *context,
 599                DOS_ATTR_DESC *dad,
 600                SMBCSRV *srv,
 601                char *str)
 602 {
 603         int n;
 604         const char *p = str;
 605         char *tok = NULL;
 606         TALLOC_CTX *frame = NULL;
 607         struct {
 608                 const char * create_time_attr;
 609                 const char * access_time_attr;
 610                 const char * write_time_attr;
 611                 const char * change_time_attr;
 612         } attr_strings;
 613
 614         /* Determine whether to use old-style or new-style attribute names */
 615         if (context->internal->full_time_names) {
 616                 /* new-style names */
 617                 attr_strings.create_time_attr = "CREATE_TIME";
 618                 attr_strings.access_time_attr = "ACCESS_TIME";
 619                 attr_strings.write_time_attr = "WRITE_TIME";
 620                 attr_strings.change_time_attr = "CHANGE_TIME";
 621         } else {
 622                 /* old-style names */
 623                 attr_strings.create_time_attr = NULL;
 624                 attr_strings.access_time_attr = "A_TIME";
 625                 attr_strings.write_time_attr = "M_TIME";
 626                 attr_strings.change_time_attr = "C_TIME";
 627         }
 628
 629         /* if this is to set the entire ACL... */
 630         if (*str == '*') {
 631                 /* ... then increment past the first colon if there is one */
 632                 if ((p = strchr(str, ':')) != NULL) {
 633                         ++p;
 634                 } else {
 635                         p = str;
 636                 }
 637         }
 638
 639         frame = talloc_stackframe();
 640         while (next_token_talloc(frame, &p, &tok, "\t,\r\n")) {
 641                 if (strncasecmp_m(tok, "MODE:", 5) == 0) {
 642                         long request = strtol(tok+5, NULL, 16);
 643                         if (request == 0) {
 644                                 dad->mode = (request |
 645                                              (IS_DOS_DIR(dad->mode)
 646                                               ? FILE_ATTRIBUTE_DIRECTORY
 647                                               : FILE_ATTRIBUTE_NORMAL));
 648                         } else {
 649                                 dad->mode = request;
 650                         }
 651                         continue;
 652                 }
 653
 654                 if (strncasecmp_m(tok, "SIZE:", 5) == 0) {
 655                         dad->size = (off_t)atof(tok+5);
 656                         continue;
 657                 }
 658
 659                 n = strlen(attr_strings.access_time_attr);
 660                 if (strncasecmp_m(tok, attr_strings.access_time_attr, n) == 0) {
 661                         dad->access_time = (time_t)strtol(tok+n+1, NULL, 10);
 662                         continue;
 663                 }
 664
 665                 n = strlen(attr_strings.change_time_attr);
 666                 if (strncasecmp_m(tok, attr_strings.change_time_attr, n) == 0) {
 667                         dad->change_time = (time_t)strtol(tok+n+1, NULL, 10);
 668                         continue;
 669                 }
 670
 671                 n = strlen(attr_strings.write_time_attr);
 672                 if (strncasecmp_m(tok, attr_strings.write_time_attr, n) == 0) {
 673                         dad->write_time = (time_t)strtol(tok+n+1, NULL, 10);
 674                         continue;
 675                 }
 676
 677                 if (attr_strings.create_time_attr != NULL) {
 678                         n = strlen(attr_strings.create_time_attr);
 679                         if (strncasecmp_m(tok, attr_strings.create_time_attr,
 680                                         n) == 0) {
 681                                 dad->create_time = (time_t)strtol(tok+n+1,
 682                                                                   NULL, 10);
 683                                 continue;
 684                         }
 685                 }
 686
 687                 if (strncasecmp_m(tok, "INODE:", 6) == 0) {
 688                         dad->inode = (SMB_INO_T)atof(tok+6);
 689                         continue;
 690                 }
 691         }
 692         TALLOC_FREE(frame);
 693 }
 694
 695 /*****************************************************
 696  Retrieve the acls for a file.
 697 *******************************************************/
 698
 699 static int
 700 cacl_get(SMBCCTX *context,
 701          TALLOC_CTX *ctx,
 702          SMBCSRV *srv,
 703          struct cli_state *ipc_cli,
 704          struct policy_handle *pol,
 705          const char *filename,
 706          const char *attr_name,
 707          char *buf,
 708          int bufsize)
 709 {
 710         uint32 i;
 711         int n = 0;
 712         int n_used;
 713         bool all;
 714         bool all_nt;
 715         bool all_nt_acls;
 716         bool all_dos;
 717         bool some_nt;
 718         bool some_dos;
 719         bool exclude_nt_revision = False;
 720         bool exclude_nt_owner = False;
 721         bool exclude_nt_group = False;
 722         bool exclude_nt_acl = False;
 723         bool exclude_dos_mode = False;
 724         bool exclude_dos_size = False;
 725         bool exclude_dos_create_time = False;
 726         bool exclude_dos_access_time = False;
 727         bool exclude_dos_write_time = False;
 728         bool exclude_dos_change_time = False;
 729         bool exclude_dos_inode = False;
 730         bool numeric = True;
 731         bool determine_size = (bufsize == 0);
 732         uint16_t fnum;
 733         struct security_descriptor *sd;
 734         fstring sidstr;
 735         fstring name_sandbox;
 736         char *name;
 737         char *pExclude;
 738         char *p;
 739         struct timespec create_time_ts;
 740         struct timespec write_time_ts;
 741         struct timespec access_time_ts;
 742         struct timespec change_time_ts;
 743         time_t create_time = (time_t)0;
 744         time_t write_time = (time_t)0;
 745         time_t access_time = (time_t)0;
 746         time_t change_time = (time_t)0;
 747         off_t size = 0;
 748         uint16 mode = 0;
 749         SMB_INO_T ino = 0;
 750         struct cli_state *cli = srv->cli;
 751         struct {
 752                 const char * create_time_attr;
 753                 const char * access_time_attr;
 754                 const char * write_time_attr;
 755                 const char * change_time_attr;
 756         } attr_strings;
 757         struct {
 758                 const char * create_time_attr;
 759                 const char * access_time_attr;
 760                 const char * write_time_attr;
 761                 const char * change_time_attr;
 762         } excl_attr_strings;
 763
 764         /* Determine whether to use old-style or new-style attribute names */
 765         if (context->internal->full_time_names) {
 766                 /* new-style names */
 767                 attr_strings.create_time_attr = "CREATE_TIME";
 768                 attr_strings.access_time_attr = "ACCESS_TIME";
 769                 attr_strings.write_time_attr = "WRITE_TIME";
 770                 attr_strings.change_time_attr = "CHANGE_TIME";
 771
 772                 excl_attr_strings.create_time_attr = "CREATE_TIME";
 773                 excl_attr_strings.access_time_attr = "ACCESS_TIME";
 774                 excl_attr_strings.write_time_attr = "WRITE_TIME";
 775                 excl_attr_strings.change_time_attr = "CHANGE_TIME";
 776         } else {
 777                 /* old-style names */
 778                 attr_strings.create_time_attr = NULL;
 779                 attr_strings.access_time_attr = "A_TIME";
 780                 attr_strings.write_time_attr = "M_TIME";
 781                 attr_strings.change_time_attr = "C_TIME";
 782
 783                 excl_attr_strings.create_time_attr = NULL;
 784                 excl_attr_strings.access_time_attr = "dos_attr.A_TIME";
 785                 excl_attr_strings.write_time_attr = "dos_attr.M_TIME";
 786                 excl_attr_strings.change_time_attr = "dos_attr.C_TIME";
 787         }
 788
 789         /* Copy name so we can strip off exclusions (if any are specified) */
 790         strncpy(name_sandbox, attr_name, sizeof(name_sandbox) - 1);
 791
 792         /* Ensure name is null terminated */
 793         name_sandbox[sizeof(name_sandbox) - 1] = '\0';
 794
 795         /* Play in the sandbox */
 796         name = name_sandbox;
 797
 798         /* If there are any exclusions, point to them and mask them from name */
 799         if ((pExclude = strchr(name, '!')) != NULL)
 800         {
 801                 *pExclude++ = '\0';
 802         }
 803
 804         all = (strncasecmp_m(name, "system.*", 8) == 0);
 805         all_nt = (strncasecmp_m(name, "system.nt_sec_desc.*", 20) == 0);
 806         all_nt_acls = (strncasecmp_m(name, "system.nt_sec_desc.acl.*", 24) == 0);
 807         all_dos = (strncasecmp_m(name, "system.dos_attr.*", 17) == 0);
 808         some_nt = (strncasecmp_m(name, "system.nt_sec_desc.", 19) == 0);
 809         some_dos = (strncasecmp_m(name, "system.dos_attr.", 16) == 0);
 810         numeric = (* (name + strlen(name) - 1) != '+');
 811
 812         /* Look for exclusions from "all" requests */
 813         if (all || all_nt || all_dos) {
 814                 /* Exclusions are delimited by '!' */
 815                 for (;
 816                      pExclude != NULL;
 817                      pExclude = (p == NULL ? NULL : p + 1)) {
 818
 819                         /* Find end of this exclusion name */
 820                         if ((p = strchr(pExclude, '!')) != NULL)
 821                         {
 822                                 *p = '\0';
 823                         }
 824
 825                         /* Which exclusion name is this? */
 826                         if (strcasecmp_m(pExclude,
 827                                        "nt_sec_desc.revision") == 0) {
 828                                 exclude_nt_revision = True;
 829                         }
 830                         else if (strcasecmp_m(pExclude,
 831                                             "nt_sec_desc.owner") == 0) {
 832                                 exclude_nt_owner = True;
 833                         }
 834                         else if (strcasecmp_m(pExclude,
 835                                             "nt_sec_desc.group") == 0) {
 836                                 exclude_nt_group = True;
 837                         }
 838                         else if (strcasecmp_m(pExclude,
 839                                             "nt_sec_desc.acl") == 0) {
 840                                 exclude_nt_acl = True;
 841                         }
 842                         else if (strcasecmp_m(pExclude,
 843                                             "dos_attr.mode") == 0) {
 844                                 exclude_dos_mode = True;
 845                         }
 846                         else if (strcasecmp_m(pExclude,
 847                                             "dos_attr.size") == 0) {
 848                                 exclude_dos_size = True;
 849                         }
 850                         else if (excl_attr_strings.create_time_attr != NULL &&
 851                                  strcasecmp_m(pExclude,
 852                                             excl_attr_strings.change_time_attr) == 0) {
 853                                 exclude_dos_create_time = True;
 854                         }
 855                         else if (strcasecmp_m(pExclude,
 856                                             excl_attr_strings.access_time_attr) == 0) {
 857                                 exclude_dos_access_time = True;
 858                         }
 859                         else if (strcasecmp_m(pExclude,
 860                                             excl_attr_strings.write_time_attr) == 0) {
 861                                 exclude_dos_write_time = True;
 862                         }
 863                         else if (strcasecmp_m(pExclude,
 864                                             excl_attr_strings.change_time_attr) == 0) {
 865                                 exclude_dos_change_time = True;
 866                         }
 867                         else if (strcasecmp_m(pExclude, "dos_attr.inode") == 0) {
 868                                 exclude_dos_inode = True;
 869                         }
 870                         else {
 871                                 DEBUG(5, ("cacl_get received unknown exclusion: %s\n",
 872                                           pExclude));
 873                                 errno = ENOATTR;
 874                                 return -1;
 875                         }
 876                 }
 877         }
 878
 879         n_used = 0;
 880
 881         /*
 882          * If we are (possibly) talking to an NT or new system and some NT
 883          * attributes have been requested...
 884          */
 885         if (ipc_cli && (all || some_nt || all_nt_acls)) {
 886                 char *targetpath = NULL;
 887                 struct cli_state *targetcli = NULL;
 888                 NTSTATUS status;
 889
 890                 /* Point to the portion after "system.nt_sec_desc." */
 891                 name += 19;     /* if (all) this will be invalid but unused */
 892
 893                 status = cli_resolve_path(
 894                         ctx, "", context->internal->auth_info,
 895                         cli, filename, &targetcli, &targetpath);
 896                 if (!NT_STATUS_IS_OK(status)) {
 897                         DEBUG(5, ("cacl_get Could not resolve %s\n",
 898                                 filename));
 899                         errno = ENOENT;
 900                         return -1;
 901                 }
 902
 903                 /* ... then obtain any NT attributes which were requested */
 904                 status = cli_ntcreate(targetcli, targetpath, 0,
 905                                       CREATE_ACCESS_READ, 0,
 906                                       FILE_SHARE_READ|FILE_SHARE_WRITE,
 907                                       FILE_OPEN, 0x0, 0x0, &fnum);
 908                 if (!NT_STATUS_IS_OK(status)) {
 909                         DEBUG(5, ("cacl_get failed to open %s: %s\n",
 910                                   targetpath, nt_errstr(status)));
 911                         errno = 0;
 912                         return -1;
 913                 }
 914
 915                 status = cli_query_secdesc(targetcli, fnum, ctx, &sd);
 916                 if (!NT_STATUS_IS_OK(status)) {
 917                         DEBUG(5,("cacl_get Failed to query old descriptor "
 918                                  "of %s: %s\n",
 919                                   targetpath, nt_errstr(status)));
 920                         errno = 0;
 921                         return -1;
 922                 }
 923
 924                 cli_close(targetcli, fnum);
 925
 926                 if (! exclude_nt_revision) {
 927                         if (all || all_nt) {
 928                                 if (determine_size) {
 929                                         p = talloc_asprintf(ctx,
 930                                                             "REVISION:%d",
 931                                                             sd->revision);
 932                                         if (!p) {
 933                                                 errno = ENOMEM;
 934                                                 return -1;
 935                                         }
 936                                         n = strlen(p);
 937                                 } else {
 938                                         n = snprintf(buf, bufsize,
 939                                                      "REVISION:%d",
 940                                                      sd->revision);
 941                                 }
 942                         } else if (strcasecmp_m(name, "revision") == 0) {
 943                                 if (determine_size) {
 944                                         p = talloc_asprintf(ctx, "%d",
 945                                                             sd->revision);
 946                                         if (!p) {
 947                                                 errno = ENOMEM;
 948                                                 return -1;
 949                                         }
 950                                         n = strlen(p);
 951                                 } else {
 952                                         n = snprintf(buf, bufsize, "%d",
 953                                                      sd->revision);
 954                                 }
 955                         }
 956
 957                         if (!determine_size && n > bufsize) {
 958                                 errno = ERANGE;
 959                                 return -1;
 960                         }
 961                         buf += n;
 962                         n_used += n;
 963                         bufsize -= n;
 964                         n = 0;
 965                 }
 966
 967                 if (! exclude_nt_owner) {
 968                         /* Get owner and group sid */
 969                         if (sd->owner_sid) {
 970                                 convert_sid_to_string(ipc_cli, pol,
 971                                                       sidstr,
 972                                                       numeric,
 973                                                       sd->owner_sid);
 974                         } else {
 975                                 fstrcpy(sidstr, "");
 976                         }
 977
 978                         if (all || all_nt) {
 979                                 if (determine_size) {
 980                                         p = talloc_asprintf(ctx, ",OWNER:%s",
 981                                                             sidstr);
 982                                         if (!p) {
 983                                                 errno = ENOMEM;
 984                                                 return -1;
 985                                         }
 986                                         n = strlen(p);
 987                                 } else if (sidstr[0] != '\0') {
 988                                         n = snprintf(buf, bufsize,
 989                                                      ",OWNER:%s", sidstr);
 990                                 }
 991                         } else if (strncasecmp_m(name, "owner", 5) == 0) {
 992                                 if (determine_size) {
 993                                         p = talloc_asprintf(ctx, "%s", sidstr);
 994                                         if (!p) {
 995                                                 errno = ENOMEM;
 996                                                 return -1;
 997                                         }
 998                                         n = strlen(p);
 999                                 } else {
1000                                         n = snprintf(buf, bufsize, "%s",
1001                                                      sidstr);
1002                                 }
1003                         }
1004
1005                         if (!determine_size && n > bufsize) {
1006                                 errno = ERANGE;
1007                                 return -1;
1008                         }
1009                         buf += n;
1010                         n_used += n;
1011                         bufsize -= n;
1012                         n = 0;
1013                 }
1014
1015                 if (! exclude_nt_group) {
1016                         if (sd->group_sid) {
1017                                 convert_sid_to_string(ipc_cli, pol,
1018                                                       sidstr, numeric,
1019                                                       sd->group_sid);
1020                         } else {
1021                                 fstrcpy(sidstr, "");
1022                         }
1023
1024                         if (all || all_nt) {
1025                                 if (determine_size) {
1026                                         p = talloc_asprintf(ctx, ",GROUP:%s",
1027                                                             sidstr);
1028                                         if (!p) {
1029                                                 errno = ENOMEM;
1030                                                 return -1;
1031                                         }
1032                                         n = strlen(p);
1033                                 } else if (sidstr[0] != '\0') {
1034                                         n = snprintf(buf, bufsize,
1035                                                      ",GROUP:%s", sidstr);
1036                                 }
1037                         } else if (strncasecmp_m(name, "group", 5) == 0) {
1038                                 if (determine_size) {
1039                                         p = talloc_asprintf(ctx, "%s", sidstr);
1040                                         if (!p) {
1041                                                 errno = ENOMEM;
1042                                                 return -1;
1043                                         }
1044                                         n = strlen(p);
1045                                 } else {
1046                                         n = snprintf(buf, bufsize,
1047                                                      "%s", sidstr);
1048                                 }
1049                         }
1050
1051                         if (!determine_size && n > bufsize) {
1052                                 errno = ERANGE;
1053                                 return -1;
1054                         }
1055                         buf += n;
1056                         n_used += n;
1057                         bufsize -= n;
1058                         n = 0;
1059                 }
1060
1061                 if (! exclude_nt_acl) {
1062                         /* Add aces to value buffer  */
1063                         for (i = 0; sd->dacl && i < sd->dacl->num_aces; i++) {
1064
1065                                 struct security_ace *ace = &sd->dacl->aces[i];
1066                                 convert_sid_to_string(ipc_cli, pol,
1067                                                       sidstr, numeric,
1068                                                       &ace->trustee);
1069
1070                                 if (all || all_nt) {
1071                                         if (determine_size) {
1072                                                 p = talloc_asprintf(
1073                                                         ctx,
1074                                                         ",ACL:"
1075                                                         "%s:%d/%d/0x%08x",
1076                                                         sidstr,
1077                                                         ace->type,
1078                                                         ace->flags,
1079                                                         ace->access_mask);
1080                                                 if (!p) {
1081                                                         errno = ENOMEM;
1082                                                         return -1;
1083                                                 }
1084                                                 n = strlen(p);
1085                                         } else {
1086                                                 n = snprintf(
1087                                                         buf, bufsize,
1088                                                         ",ACL:%s:%d/%d/0x%08x",
1089                                                         sidstr,
1090                                                         ace->type,
1091                                                         ace->flags,
1092                                                         ace->access_mask);
1093                                         }
1094                                 } else if ((strncasecmp_m(name, "acl", 3) == 0 &&
1095                                             strcasecmp_m(name+3, sidstr) == 0) ||
1096                                            (strncasecmp_m(name, "acl+", 4) == 0 &&
1097                                             strcasecmp_m(name+4, sidstr) == 0)) {
1098                                         if (determine_size) {
1099                                                 p = talloc_asprintf(
1100                                                         ctx,
1101                                                         "%d/%d/0x%08x",
1102                                                         ace->type,
1103                                                         ace->flags,
1104                                                         ace->access_mask);
1105                                                 if (!p) {
1106                                                         errno = ENOMEM;
1107                                                         return -1;
1108                                                 }
1109                                                 n = strlen(p);
1110                                         } else {
1111                                                 n = snprintf(buf, bufsize,
1112                                                              "%d/%d/0x%08x",
1113                                                              ace->type,
1114                                                              ace->flags,
1115                                                              ace->access_mask);
1116                                         }
1117                                 } else if (all_nt_acls) {
1118                                         if (determine_size) {
1119                                                 p = talloc_asprintf(
1120                                                         ctx,
1121                                                         "%s%s:%d/%d/0x%08x",
1122                                                         i ? "," : "",
1123                                                         sidstr,
1124                                                         ace->type,
1125                                                         ace->flags,
1126                                                         ace->access_mask);
1127                                                 if (!p) {
1128                                                         errno = ENOMEM;
1129                                                         return -1;
1130                                                 }
1131                                                 n = strlen(p);
1132                                         } else {
1133                                                 n = snprintf(buf, bufsize,
1134                                                              "%s%s:%d/%d/0x%08x",
1135                                                              i ? "," : "",
1136                                                              sidstr,
1137                                                              ace->type,
1138                                                              ace->flags,
1139                                                              ace->access_mask);
1140                                         }
1141                                 }
1142                                 if (!determine_size && n > bufsize) {
1143                                         errno = ERANGE;
1144                                         return -1;
1145                                 }
1146                                 buf += n;
1147                                 n_used += n;
1148                                 bufsize -= n;
1149                                 n = 0;
1150                         }
1151                 }
1152
1153                 /* Restore name pointer to its original value */
1154                 name -= 19;
1155         }
1156
1157         if (all || some_dos) {
1158                 /* Point to the portion after "system.dos_attr." */
1159                 name += 16;     /* if (all) this will be invalid but unused */
1160
1161                 /* Obtain the DOS attributes */
1162                 if (!SMBC_getatr(context, srv, filename, &mode, &size,
1163                                  &create_time_ts,
1164                                  &access_time_ts,
1165                                  &write_time_ts,
1166                                  &change_time_ts,
1167                                  &ino)) {
1168
1169                         errno = SMBC_errno(context, srv->cli);
1170                         return -1;
1171                 }
1172
1173                 create_time = convert_timespec_to_time_t(create_time_ts);
1174                 access_time = convert_timespec_to_time_t(access_time_ts);
1175                 write_time = convert_timespec_to_time_t(write_time_ts);
1176                 change_time = convert_timespec_to_time_t(change_time_ts);
1177
1178                 if (! exclude_dos_mode) {
1179                         if (all || all_dos) {
1180                                 if (determine_size) {
1181                                         p = talloc_asprintf(ctx,
1182                                                             "%sMODE:0x%x",
1183                                                             (ipc_cli &&
1184                                                              (all || some_nt)
1185                                                              ? ","
1186                                                              : ""),
1187                                                             mode);
1188                                         if (!p) {
1189                                                 errno = ENOMEM;
1190                                                 return -1;
1191                                         }
1192                                         n = strlen(p);
1193                                 } else {
1194                                         n = snprintf(buf, bufsize,
1195                                                      "%sMODE:0x%x",
1196                                                      (ipc_cli &&
1197                                                       (all || some_nt)
1198                                                       ? ","
1199                                                       : ""),
1200                                                      mode);
1201                                 }
1202                         } else if (strcasecmp_m(name, "mode") == 0) {
1203                                 if (determine_size) {
1204                                         p = talloc_asprintf(ctx, "0x%x", mode);
1205                                         if (!p) {
1206                                                 errno = ENOMEM;
1207                                                 return -1;
1208                                         }
1209                                         n = strlen(p);
1210                                 } else {
1211                                         n = snprintf(buf, bufsize,
1212                                                      "0x%x", mode);
1213                                 }
1214                         }
1215
1216                         if (!determine_size && n > bufsize) {
1217                                 errno = ERANGE;
1218                                 return -1;
1219                         }
1220                         buf += n;
1221                         n_used += n;
1222                         bufsize -= n;
1223                         n = 0;
1224                 }
1225
1226                 if (! exclude_dos_size) {
1227                         if (all || all_dos) {
1228                                 if (determine_size) {
1229                                         p = talloc_asprintf(
1230                                                 ctx,
1231                                                 ",SIZE:%.0f",
1232                                                 (double)size);
1233                                         if (!p) {
1234                                                 errno = ENOMEM;
1235                                                 return -1;
1236                                         }
1237                                         n = strlen(p);
1238                                 } else {
1239                                         n = snprintf(buf, bufsize,
1240                                                      ",SIZE:%.0f",
1241                                                      (double)size);
1242                                 }
1243                         } else if (strcasecmp_m(name, "size") == 0) {
1244                                 if (determine_size) {
1245                                         p = talloc_asprintf(
1246                                                 ctx,
1247                                                 "%.0f",
1248                                                 (double)size);
1249                                         if (!p) {
1250                                                 errno = ENOMEM;
1251                                                 return -1;
1252                                         }
1253                                         n = strlen(p);
1254                                 } else {
1255                                         n = snprintf(buf, bufsize,
1256                                                      "%.0f",
1257                                                      (double)size);
1258                                 }
1259                         }
1260
1261                         if (!determine_size && n > bufsize) {
1262                                 errno = ERANGE;
1263                                 return -1;
1264                         }
1265                         buf += n;
1266                         n_used += n;
1267                         bufsize -= n;
1268                         n = 0;
1269                 }
1270
1271                 if (! exclude_dos_create_time &&
1272                     attr_strings.create_time_attr != NULL) {
1273                         if (all || all_dos) {
1274                                 if (determine_size) {
1275                                         p = talloc_asprintf(ctx,
1276                                                             ",%s:%lu",
1277                                                             attr_strings.create_time_attr,
1278                                                             (unsigned long) create_time);
1279                                         if (!p) {
1280                                                 errno = ENOMEM;
1281                                                 return -1;
1282                                         }
1283                                         n = strlen(p);
1284                                 } else {
1285                                         n = snprintf(buf, bufsize,
1286                                                      ",%s:%lu",
1287                                                      attr_strings.create_time_attr,
1288                                                      (unsigned long) create_time);
1289                                 }
1290                         } else if (strcasecmp_m(name, attr_strings.create_time_attr) == 0) {
1291                                 if (determine_size) {
1292                                         p = talloc_asprintf(ctx, "%lu", (unsigned long) create_time);
1293                                         if (!p) {
1294                                                 errno = ENOMEM;
1295                                                 return -1;
1296                                         }
1297                                         n = strlen(p);
1298                                 } else {
1299                                         n = snprintf(buf, bufsize,
1300                                                      "%lu", (unsigned long) create_time);
1301                                 }
1302                         }
1303
1304                         if (!determine_size && n > bufsize) {
1305                                 errno = ERANGE;
1306                                 return -1;
1307                         }
1308                         buf += n;
1309                         n_used += n;
1310                         bufsize -= n;
1311                         n = 0;
1312                 }
1313
1314                 if (! exclude_dos_access_time) {
1315                         if (all || all_dos) {
1316                                 if (determine_size) {
1317                                         p = talloc_asprintf(ctx,
1318                                                             ",%s:%lu",
1319                                                             attr_strings.access_time_attr,
1320                                                             (unsigned long) access_time);
1321                                         if (!p) {
1322                                                 errno = ENOMEM;
1323                                                 return -1;
1324                                         }
1325                                         n = strlen(p);
1326                                 } else {
1327                                         n = snprintf(buf, bufsize,
1328                                                      ",%s:%lu",
1329                                                      attr_strings.access_time_attr,
1330                                                      (unsigned long) access_time);
1331                                 }
1332                         } else if (strcasecmp_m(name, attr_strings.access_time_attr) == 0) {
1333                                 if (determine_size) {
1334                                         p = talloc_asprintf(ctx, "%lu", (unsigned long) access_time);
1335                                         if (!p) {
1336                                                 errno = ENOMEM;
1337                                                 return -1;
1338                                         }
1339                                         n = strlen(p);
1340                                 } else {
1341                                         n = snprintf(buf, bufsize,
1342                                                      "%lu", (unsigned long) access_time);
1343                                 }
1344                         }
1345
1346                         if (!determine_size && n > bufsize) {
1347                                 errno = ERANGE;
1348                                 return -1;
1349                         }
1350                         buf += n;
1351                         n_used += n;
1352                         bufsize -= n;
1353                         n = 0;
1354                 }
1355
1356                 if (! exclude_dos_write_time) {
1357                         if (all || all_dos) {
1358                                 if (determine_size) {
1359                                         p = talloc_asprintf(ctx,
1360                                                             ",%s:%lu",
1361                                                             attr_strings.write_time_attr,
1362                                                             (unsigned long) write_time);
1363                                         if (!p) {
1364                                                 errno = ENOMEM;
1365                                                 return -1;
1366                                         }
1367                                         n = strlen(p);
1368                                 } else {
1369                                         n = snprintf(buf, bufsize,
1370                                                      ",%s:%lu",
1371                                                      attr_strings.write_time_attr,
1372                                                      (unsigned long) write_time);
1373                                 }
1374                         } else if (strcasecmp_m(name, attr_strings.write_time_attr) == 0) {
1375                                 if (determine_size) {
1376                                         p = talloc_asprintf(ctx, "%lu", (unsigned long) write_time);
1377                                         if (!p) {
1378                                                 errno = ENOMEM;
1379                                                 return -1;
1380                                         }
1381                                         n = strlen(p);
1382                                 } else {
1383                                         n = snprintf(buf, bufsize,
1384                                                      "%lu", (unsigned long) write_time);
1385                                 }
1386                         }
1387
1388                         if (!determine_size && n > bufsize) {
1389                                 errno = ERANGE;
1390                                 return -1;
1391                         }
1392                         buf += n;
1393                         n_used += n;
1394                         bufsize -= n;
1395                         n = 0;
1396                 }
1397
1398                 if (! exclude_dos_change_time) {
1399                         if (all || all_dos) {
1400                                 if (determine_size) {
1401                                         p = talloc_asprintf(ctx,
1402                                                             ",%s:%lu",
1403                                                             attr_strings.change_time_attr,
1404                                                             (unsigned long) change_time);
1405                                         if (!p) {
1406                                                 errno = ENOMEM;
1407                                                 return -1;
1408                                         }
1409                                         n = strlen(p);
1410                                 } else {
1411                                         n = snprintf(buf, bufsize,
1412                                                      ",%s:%lu",
1413                                                      attr_strings.change_time_attr,
1414                                                      (unsigned long) change_time);
1415                                 }
1416                         } else if (strcasecmp_m(name, attr_strings.change_time_attr) == 0) {
1417                                 if (determine_size) {
1418                                         p = talloc_asprintf(ctx, "%lu", (unsigned long) change_time);
1419                                         if (!p) {
1420                                                 errno = ENOMEM;
1421                                                 return -1;
1422                                         }
1423                                         n = strlen(p);
1424                                 } else {
1425                                         n = snprintf(buf, bufsize,
1426                                                      "%lu", (unsigned long) change_time);
1427                                 }
1428                         }
1429
1430                         if (!determine_size && n > bufsize) {
1431                                 errno = ERANGE;
1432                                 return -1;
1433                         }
1434                         buf += n;
1435                         n_used += n;
1436                         bufsize -= n;
1437                         n = 0;
1438                 }
1439
1440                 if (! exclude_dos_inode) {
1441                         if (all || all_dos) {
1442                                 if (determine_size) {
1443                                         p = talloc_asprintf(
1444                                                 ctx,
1445                                                 ",INODE:%.0f",
1446                                                 (double)ino);
1447                                         if (!p) {
1448                                                 errno = ENOMEM;
1449                                                 return -1;
1450                                         }
1451                                         n = strlen(p);
1452                                 } else {
1453                                         n = snprintf(buf, bufsize,
1454                                                      ",INODE:%.0f",
1455                                                      (double) ino);
1456                                 }
1457                         } else if (strcasecmp_m(name, "inode") == 0) {
1458                                 if (determine_size) {
1459                                         p = talloc_asprintf(
1460                                                 ctx,
1461                                                 "%.0f",
1462                                                 (double) ino);
1463                                         if (!p) {
1464                                                 errno = ENOMEM;
1465                                                 return -1;
1466                                         }
1467                                         n = strlen(p);
1468                                 } else {
1469                                         n = snprintf(buf, bufsize,
1470                                                      "%.0f",
1471                                                      (double) ino);
1472                                 }
1473                         }
1474
1475                         if (!determine_size && n > bufsize) {
1476                                 errno = ERANGE;
1477                                 return -1;
1478                         }
1479                         buf += n;
1480                         n_used += n;
1481                         bufsize -= n;
1482                         n = 0;
1483                 }
1484
1485                 /* Restore name pointer to its original value */
1486                 name -= 16;
1487         }
1488
1489         if (n_used == 0) {
1490                 errno = ENOATTR;
1491                 return -1;
1492         }
1493
1494         return n_used;
1495 }
1496
1497 /*****************************************************
1498 set the ACLs on a file given an ascii description
1499 *******************************************************/
1500 static int
1501 cacl_set(SMBCCTX *context,
1502         TALLOC_CTX *ctx,
1503         struct cli_state *cli,
1504         struct cli_state *ipc_cli,
1505         struct policy_handle *pol,
1506         const char *filename,
1507         char *the_acl,
1508         int mode,
1509         int flags)
1510 {
1511         uint16_t fnum = (uint16_t)-1;
1512         int err = 0;
1513         struct security_descriptor *sd = NULL, *old;
1514         struct security_acl *dacl = NULL;
1515         struct dom_sid *owner_sid = NULL;
1516         struct dom_sid *group_sid = NULL;
1517         uint32 i, j;
1518         size_t sd_size;
1519         int ret = 0;
1520         char *p;
1521         bool numeric = True;
1522         char *targetpath = NULL;
1523         struct cli_state *targetcli = NULL;
1524         NTSTATUS status;
1525
1526         /* the_acl will be null for REMOVE_ALL operations */
1527         if (the_acl) {
1528                 numeric = ((p = strchr(the_acl, ':')) != NULL &&
1529                            p > the_acl &&
1530                            p[-1] != '+');
1531
1532                 /* if this is to set the entire ACL... */
1533                 if (*the_acl == '*') {
1534                         /* ... then increment past the first colon */
1535                         the_acl = p + 1;
1536                 }
1537
1538                 sd = sec_desc_parse(ctx, ipc_cli, pol, numeric, the_acl);
1539                 if (!sd) {
1540                         errno = EINVAL;
1541                         return -1;
1542                 }
1543         }
1544
1545         /* SMBC_XATTR_MODE_REMOVE_ALL is the only caller
1546            that doesn't deref sd */
1547
1548         if (!sd && (mode != SMBC_XATTR_MODE_REMOVE_ALL)) {
1549                 errno = EINVAL;
1550                 return -1;
1551         }
1552
1553         status = cli_resolve_path(ctx, "", context->internal->auth_info,
1554                                   cli, filename, &targetcli, &targetpath);
1555         if (!NT_STATUS_IS_OK(status)) {
1556                 DEBUG(5,("cacl_set: Could not resolve %s\n", filename));
1557                 errno = ENOENT;
1558                 return -1;
1559         }
1560
1561         /* The desired access below is the only one I could find that works
1562            with NT4, W2KP and Samba */
1563
1564         status = cli_ntcreate(targetcli, targetpath, 0, CREATE_ACCESS_READ, 0,
1565                               FILE_SHARE_READ|FILE_SHARE_WRITE, FILE_OPEN,
1566                               0x0, 0x0, &fnum);
1567         if (!NT_STATUS_IS_OK(status)) {
1568                 DEBUG(5, ("cacl_set failed to open %s: %s\n",
1569                           targetpath, nt_errstr(status)));
1570                 errno = 0;
1571                 return -1;
1572         }
1573
1574         status = cli_query_secdesc(targetcli, fnum, ctx, &old);
1575         if (!NT_STATUS_IS_OK(status)) {
1576                 DEBUG(5,("cacl_set Failed to query old descriptor of %s: %s\n",
1577                          targetpath, nt_errstr(status)));
1578                 errno = 0;
1579                 return -1;
1580         }
1581
1582         cli_close(targetcli, fnum);
1583
1584         switch (mode) {
1585         case SMBC_XATTR_MODE_REMOVE_ALL:
1586                 old->dacl->num_aces = 0;
1587                 dacl = old->dacl;
1588                 break;
1589
1590         case SMBC_XATTR_MODE_REMOVE:
1591                 for (i=0;sd->dacl && i<sd->dacl->num_aces;i++) {
1592                         bool found = False;
1593
1594                         for (j=0;old->dacl && j<old->dacl->num_aces;j++) {
1595                                 if (sec_ace_equal(&sd->dacl->aces[i],
1596                                                   &old->dacl->aces[j])) {
1597                                         uint32 k;
1598                                         for (k=j; k<old->dacl->num_aces-1;k++) {
1599                                                 old->dacl->aces[k] =
1600                                                         old->dacl->aces[k+1];
1601                                         }
1602                                         old->dacl->num_aces--;
1603                                         found = True;
1604                                         dacl = old->dacl;
1605                                         break;
1606                                 }
1607                         }
1608
1609                         if (!found) {
1610                                 err = ENOATTR;
1611                                 ret = -1;
1612                                 goto failed;
1613                         }
1614                 }
1615                 break;
1616
1617         case SMBC_XATTR_MODE_ADD:
1618                 for (i=0;sd->dacl && i<sd->dacl->num_aces;i++) {
1619                         bool found = False;
1620
1621                         for (j=0;old->dacl && j<old->dacl->num_aces;j++) {
1622                                 if (dom_sid_equal(&sd->dacl->aces[i].trustee,
1623                                               &old->dacl->aces[j].trustee)) {
1624                                         if (!(flags & SMBC_XATTR_FLAG_CREATE)) {
1625                                                 err = EEXIST;
1626                                                 ret = -1;
1627                                                 goto failed;
1628                                         }
1629                                         old->dacl->aces[j] = sd->dacl->aces[i];
1630                                         ret = -1;
1631                                         found = True;
1632                                 }
1633                         }
1634
1635                         if (!found && (flags & SMBC_XATTR_FLAG_REPLACE)) {
1636                                 err = ENOATTR;
1637                                 ret = -1;
1638                                 goto failed;
1639                         }
1640
1641                         for (i=0;sd->dacl && i<sd->dacl->num_aces;i++) {
1642                                 add_ace(&old->dacl, &sd->dacl->aces[i], ctx);
1643                         }
1644                 }
1645                 dacl = old->dacl;
1646                 break;
1647
1648         case SMBC_XATTR_MODE_SET:
1649                 old = sd;
1650                 owner_sid = old->owner_sid;
1651                 group_sid = old->group_sid;
1652                 dacl = old->dacl;
1653                 break;
1654
1655         case SMBC_XATTR_MODE_CHOWN:
1656                 owner_sid = sd->owner_sid;
1657                 break;
1658
1659         case SMBC_XATTR_MODE_CHGRP:
1660                 group_sid = sd->group_sid;
1661                 break;
1662         }
1663
1664         /* Denied ACE entries must come before allowed ones */
1665         sort_acl(old->dacl);
1666
1667         /* Create new security descriptor and set it */
1668         sd = make_sec_desc(ctx, old->revision, SEC_DESC_SELF_RELATIVE,
1669                            owner_sid, group_sid, NULL, dacl, &sd_size);
1670
1671         status = cli_ntcreate(targetcli, targetpath, 0,
1672                               WRITE_DAC_ACCESS | WRITE_OWNER_ACCESS, 0,
1673                               FILE_SHARE_READ|FILE_SHARE_WRITE, FILE_OPEN,
1674                               0x0, 0x0, &fnum);
1675         if (!NT_STATUS_IS_OK(status)) {
1676                 DEBUG(5, ("cacl_set failed to open %s: %s\n",
1677                           targetpath, nt_errstr(status)));
1678                 errno = 0;
1679                 return -1;
1680         }
1681
1682         status = cli_set_secdesc(targetcli, fnum, sd);
1683         if (!NT_STATUS_IS_OK(status)) {
1684                 DEBUG(5, ("ERROR: secdesc set failed: %s\n",
1685                           nt_errstr(status)));
1686                 ret = -1;
1687         }
1688
1689         /* Clean up */
1690
1691 failed:
1692         cli_close(targetcli, fnum);
1693
1694         if (err != 0) {
1695                 errno = err;
1696         }
1697
1698         return ret;
1699 }
1700
1701
1702 int
1703 SMBC_setxattr_ctx(SMBCCTX *context,
1704                   const char *fname,
1705                   const char *name,
1706                   const void *value,
1707                   size_t size,
1708                   int flags)
1709 {
1710         int ret;
1711         int ret2;
1712         SMBCSRV *srv = NULL;
1713         SMBCSRV *ipc_srv = NULL;
1714         char *server = NULL;
1715         char *share = NULL;
1716         char *user = NULL;
1717         char *password = NULL;
1718         char *workgroup = NULL;
1719         char *path = NULL;
1720         DOS_ATTR_DESC *dad = NULL;
1721         struct {
1722                 const char * create_time_attr;
1723                 const char * access_time_attr;
1724                 const char * write_time_attr;
1725                 const char * change_time_attr;
1726         } attr_strings;
1727         TALLOC_CTX *frame = talloc_stackframe();
1728
1729         if (!context || !context->internal->initialized) {
1730                 errno = EINVAL;  /* Best I can think of ... */
1731                 TALLOC_FREE(frame);
1732                 return -1;
1733         }
1734
1735         if (!fname) {
1736                 errno = EINVAL;
1737                 TALLOC_FREE(frame);
1738                 return -1;
1739         }
1740
1741         DEBUG(4, ("smbc_setxattr(%s, %s, %.*s)\n",
1742                   fname, name, (int) size, (const char*)value));
1743
1744         if (SMBC_parse_path(frame,
1745                             context,
1746                             fname,
1747                             &workgroup,
1748                             &server,
1749                             &share,
1750                             &path,
1751                             &user,
1752                             &password,
1753                             NULL)) {
1754                 errno = EINVAL;
1755                 TALLOC_FREE(frame);
1756                 return -1;
1757         }
1758
1759         if (!user || user[0] == (char)0) {
1760                 user = talloc_strdup(frame, smbc_getUser(context));
1761                 if (!user) {
1762                         errno = ENOMEM;
1763                         TALLOC_FREE(frame);
1764                         return -1;
1765                 }
1766         }
1767
1768         srv = SMBC_server(frame, context, True,
1769                           server, share, &workgroup, &user, &password);
1770         if (!srv) {
1771                 TALLOC_FREE(frame);
1772                 return -1;  /* errno set by SMBC_server */
1773         }
1774
1775         if (! srv->no_nt_session) {
1776                 ipc_srv = SMBC_attr_server(frame, context, server, share,
1777                                            &workgroup, &user, &password);
1778                 if (! ipc_srv) {
1779                         srv->no_nt_session = True;
1780                 }
1781         } else {
1782                 ipc_srv = NULL;
1783         }
1784
1785         /*
1786          * Are they asking to set the entire set of known attributes?
1787          */
1788         if (strcasecmp_m(name, "system.*") == 0 ||
1789             strcasecmp_m(name, "system.*+") == 0) {
1790                 /* Yup. */
1791                 char *namevalue =
1792                         talloc_asprintf(talloc_tos(), "%s:%s",
1793                                         name+7, (const char *) value);
1794                 if (! namevalue) {
1795                         errno = ENOMEM;
1796                         ret = -1;
1797                         TALLOC_FREE(frame);
1798                         return -1;
1799                 }
1800
1801                 if (ipc_srv) {
1802                         ret = cacl_set(context, talloc_tos(), srv->cli,
1803                                        ipc_srv->cli, &ipc_srv->pol, path,
1804                                        namevalue,
1805                                        (*namevalue == '*'
1806                                         ? SMBC_XATTR_MODE_SET
1807                                         : SMBC_XATTR_MODE_ADD),
1808                                        flags);
1809                 } else {
1810                         ret = 0;
1811                 }
1812
1813                 /* get a DOS Attribute Descriptor with current attributes */
1814                 dad = dos_attr_query(context, talloc_tos(), path, srv);
1815                 if (dad) {
1816                         /* Overwrite old with new, using what was provided */
1817                         dos_attr_parse(context, dad, srv, namevalue);
1818
1819                         /* Set the new DOS attributes */
1820                         if (! SMBC_setatr(context, srv, path,
1821                                           dad->create_time,
1822                                           dad->access_time,
1823                                           dad->write_time,
1824                                           dad->change_time,
1825                                           dad->mode)) {
1826
1827                                 /* cause failure if NT failed too */
1828                                 dad = NULL;
1829                         }
1830                 }
1831
1832                 /* we only fail if both NT and DOS sets failed */
1833                 if (ret < 0 && ! dad) {
1834                         ret = -1; /* in case dad was null */
1835                 }
1836                 else {
1837                         ret = 0;
1838                 }
1839
1840                 TALLOC_FREE(frame);
1841                 return ret;
1842         }
1843
1844         /*
1845          * Are they asking to set an access control element or to set
1846          * the entire access control list?
1847          */
1848         if (strcasecmp_m(name, "system.nt_sec_desc.*") == 0 ||
1849             strcasecmp_m(name, "system.nt_sec_desc.*+") == 0 ||
1850             strcasecmp_m(name, "system.nt_sec_desc.revision") == 0 ||
1851             strncasecmp_m(name, "system.nt_sec_desc.acl", 22) == 0 ||
1852             strncasecmp_m(name, "system.nt_sec_desc.acl+", 23) == 0) {
1853
1854                 /* Yup. */
1855                 char *namevalue =
1856                         talloc_asprintf(talloc_tos(), "%s:%s",
1857                                         name+19, (const char *) value);
1858
1859                 if (! ipc_srv) {
1860                         ret = -1; /* errno set by SMBC_server() */
1861                 }
1862                 else if (! namevalue) {
1863                         errno = ENOMEM;
1864                         ret = -1;
1865                 } else {
1866                         ret = cacl_set(context, talloc_tos(), srv->cli,
1867                                        ipc_srv->cli, &ipc_srv->pol, path,
1868                                        namevalue,
1869                                        (*namevalue == '*'
1870                                         ? SMBC_XATTR_MODE_SET
1871                                         : SMBC_XATTR_MODE_ADD),
1872                                        flags);
1873                 }
1874                 TALLOC_FREE(frame);
1875                 return ret;
1876         }
1877
1878         /*
1879          * Are they asking to set the owner?
1880          */
1881         if (strcasecmp_m(name, "system.nt_sec_desc.owner") == 0 ||
1882             strcasecmp_m(name, "system.nt_sec_desc.owner+") == 0) {
1883
1884                 /* Yup. */
1885                 char *namevalue =
1886                         talloc_asprintf(talloc_tos(), "%s:%s",
1887                                         name+19, (const char *) value);
1888
1889                 if (! ipc_srv) {
1890                         ret = -1; /* errno set by SMBC_server() */
1891                 }
1892                 else if (! namevalue) {
1893                         errno = ENOMEM;
1894                         ret = -1;
1895                 } else {
1896                         ret = cacl_set(context, talloc_tos(), srv->cli,
1897                                        ipc_srv->cli, &ipc_srv->pol, path,
1898                                        namevalue, SMBC_XATTR_MODE_CHOWN, 0);
1899                 }
1900                 TALLOC_FREE(frame);
1901                 return ret;
1902         }
1903
1904         /*
1905          * Are they asking to set the group?
1906          */
1907         if (strcasecmp_m(name, "system.nt_sec_desc.group") == 0 ||
1908             strcasecmp_m(name, "system.nt_sec_desc.group+") == 0) {
1909
1910                 /* Yup. */
1911                 char *namevalue =
1912                         talloc_asprintf(talloc_tos(), "%s:%s",
1913                                         name+19, (const char *) value);
1914
1915                 if (! ipc_srv) {
1916                         /* errno set by SMBC_server() */
1917                         ret = -1;
1918                 }
1919                 else if (! namevalue) {
1920                         errno = ENOMEM;
1921                         ret = -1;
1922                 } else {
1923                         ret = cacl_set(context, talloc_tos(), srv->cli,
1924                                        ipc_srv->cli, &ipc_srv->pol, path,
1925                                        namevalue, SMBC_XATTR_MODE_CHGRP, 0);
1926                 }
1927                 TALLOC_FREE(frame);
1928                 return ret;
1929         }
1930
1931         /* Determine whether to use old-style or new-style attribute names */
1932         if (context->internal->full_time_names) {
1933                 /* new-style names */
1934                 attr_strings.create_time_attr = "system.dos_attr.CREATE_TIME";
1935                 attr_strings.access_time_attr = "system.dos_attr.ACCESS_TIME";
1936                 attr_strings.write_time_attr = "system.dos_attr.WRITE_TIME";
1937                 attr_strings.change_time_attr = "system.dos_attr.CHANGE_TIME";
1938         } else {
1939                 /* old-style names */
1940                 attr_strings.create_time_attr = NULL;
1941                 attr_strings.access_time_attr = "system.dos_attr.A_TIME";
1942                 attr_strings.write_time_attr = "system.dos_attr.M_TIME";
1943                 attr_strings.change_time_attr = "system.dos_attr.C_TIME";
1944         }
1945
1946         /*
1947          * Are they asking to set a DOS attribute?
1948          */
1949         if (strcasecmp_m(name, "system.dos_attr.*") == 0 ||
1950             strcasecmp_m(name, "system.dos_attr.mode") == 0 ||
1951             (attr_strings.create_time_attr != NULL &&
1952              strcasecmp_m(name, attr_strings.create_time_attr) == 0) ||
1953             strcasecmp_m(name, attr_strings.access_time_attr) == 0 ||
1954             strcasecmp_m(name, attr_strings.write_time_attr) == 0 ||
1955             strcasecmp_m(name, attr_strings.change_time_attr) == 0) {
1956
1957                 /* get a DOS Attribute Descriptor with current attributes */
1958                 dad = dos_attr_query(context, talloc_tos(), path, srv);
1959                 if (dad) {
1960                         char *namevalue =
1961                                 talloc_asprintf(talloc_tos(), "%s:%s",
1962                                                 name+16, (const char *) value);
1963                         if (! namevalue) {
1964                                 errno = ENOMEM;
1965                                 ret = -1;
1966                         } else {
1967                                 /* Overwrite old with provided new params */
1968                                 dos_attr_parse(context, dad, srv, namevalue);
1969
1970                                 /* Set the new DOS attributes */
1971                                 ret2 = SMBC_setatr(context, srv, path,
1972                                                    dad->create_time,
1973                                                    dad->access_time,
1974                                                    dad->write_time,
1975                                                    dad->change_time,
1976                                                    dad->mode);
1977
1978                                 /* ret2 has True (success) / False (failure) */
1979                                 if (ret2) {
1980                                         ret = 0;
1981                                 } else {
1982                                         ret = -1;
1983                                 }
1984                         }
1985                 } else {
1986                         ret = -1;
1987                 }
1988
1989                 TALLOC_FREE(frame);
1990                 return ret;
1991         }
1992
1993         /* Unsupported attribute name */
1994         errno = EINVAL;
1995         TALLOC_FREE(frame);
1996         return -1;
1997 }
1998
1999 int
2000 SMBC_getxattr_ctx(SMBCCTX *context,
2001                   const char *fname,
2002                   const char *name,
2003                   const void *value,
2004                   size_t size)
2005 {
2006         int ret;
2007         SMBCSRV *srv = NULL;
2008         SMBCSRV *ipc_srv = NULL;
2009         char *server = NULL;
2010         char *share = NULL;
2011         char *user = NULL;
2012         char *password = NULL;
2013         char *workgroup = NULL;
2014         char *path = NULL;
2015         struct {
2016                 const char * create_time_attr;
2017                 const char * access_time_attr;
2018                 const char * write_time_attr;
2019                 const char * change_time_attr;
2020         } attr_strings;
2021         TALLOC_CTX *frame = talloc_stackframe();
2022
2023         if (!context || !context->internal->initialized) {
2024                 errno = EINVAL;  /* Best I can think of ... */
2025                 TALLOC_FREE(frame);
2026                 return -1;
2027         }
2028
2029         if (!fname) {
2030                 errno = EINVAL;
2031                 TALLOC_FREE(frame);
2032                 return -1;
2033         }
2034
2035         DEBUG(4, ("smbc_getxattr(%s, %s)\n", fname, name));
2036
2037         if (SMBC_parse_path(frame,
2038                             context,
2039                             fname,
2040                             &workgroup,
2041                             &server,
2042                             &share,
2043                             &path,
2044                             &user,
2045                             &password,
2046                             NULL)) {
2047                 errno = EINVAL;
2048                 TALLOC_FREE(frame);
2049                 return -1;
2050         }
2051
2052         if (!user || user[0] == (char)0) {
2053                 user = talloc_strdup(frame, smbc_getUser(context));
2054                 if (!user) {
2055                         errno = ENOMEM;
2056                         TALLOC_FREE(frame);
2057                         return -1;
2058                 }
2059         }
2060
2061         srv = SMBC_server(frame, context, True,
2062                           server, share, &workgroup, &user, &password);
2063         if (!srv) {
2064                 TALLOC_FREE(frame);
2065                 return -1;  /* errno set by SMBC_server */
2066         }
2067
2068         if (! srv->no_nt_session) {
2069                 ipc_srv = SMBC_attr_server(frame, context, server, share,
2070                                            &workgroup, &user, &password);
2071                 if (! ipc_srv) {
2072                         srv->no_nt_session = True;
2073                 }
2074         } else {
2075                 ipc_srv = NULL;
2076         }
2077
2078         /* Determine whether to use old-style or new-style attribute names */
2079         if (context->internal->full_time_names) {
2080                 /* new-style names */
2081                 attr_strings.create_time_attr = "system.dos_attr.CREATE_TIME";
2082                 attr_strings.access_time_attr = "system.dos_attr.ACCESS_TIME";
2083                 attr_strings.write_time_attr = "system.dos_attr.WRITE_TIME";
2084                 attr_strings.change_time_attr = "system.dos_attr.CHANGE_TIME";
2085         } else {
2086                 /* old-style names */
2087                 attr_strings.create_time_attr = NULL;
2088                 attr_strings.access_time_attr = "system.dos_attr.A_TIME";
2089                 attr_strings.write_time_attr = "system.dos_attr.M_TIME";
2090                 attr_strings.change_time_attr = "system.dos_attr.C_TIME";
2091         }
2092
2093         /* Are they requesting a supported attribute? */
2094         if (strcasecmp_m(name, "system.*") == 0 ||
2095             strncasecmp_m(name, "system.*!", 9) == 0 ||
2096             strcasecmp_m(name, "system.*+") == 0 ||
2097             strncasecmp_m(name, "system.*+!", 10) == 0 ||
2098             strcasecmp_m(name, "system.nt_sec_desc.*") == 0 ||
2099             strncasecmp_m(name, "system.nt_sec_desc.*!", 21) == 0 ||
2100             strcasecmp_m(name, "system.nt_sec_desc.*+") == 0 ||
2101             strncasecmp_m(name, "system.nt_sec_desc.*+!", 22) == 0 ||
2102             strcasecmp_m(name, "system.nt_sec_desc.revision") == 0 ||
2103             strcasecmp_m(name, "system.nt_sec_desc.owner") == 0 ||
2104             strcasecmp_m(name, "system.nt_sec_desc.owner+") == 0 ||
2105             strcasecmp_m(name, "system.nt_sec_desc.group") == 0 ||
2106             strcasecmp_m(name, "system.nt_sec_desc.group+") == 0 ||
2107             strncasecmp_m(name, "system.nt_sec_desc.acl", 22) == 0 ||
2108             strncasecmp_m(name, "system.nt_sec_desc.acl+", 23) == 0 ||
2109             strcasecmp_m(name, "system.dos_attr.*") == 0 ||
2110             strncasecmp_m(name, "system.dos_attr.*!", 18) == 0 ||
2111             strcasecmp_m(name, "system.dos_attr.mode") == 0 ||
2112             strcasecmp_m(name, "system.dos_attr.size") == 0 ||
2113             (attr_strings.create_time_attr != NULL &&
2114              strcasecmp_m(name, attr_strings.create_time_attr) == 0) ||
2115             strcasecmp_m(name, attr_strings.access_time_attr) == 0 ||
2116             strcasecmp_m(name, attr_strings.write_time_attr) == 0 ||
2117             strcasecmp_m(name, attr_strings.change_time_attr) == 0 ||
2118             strcasecmp_m(name, "system.dos_attr.inode") == 0) {
2119
2120                 /* Yup. */
2121                 const char *filename = name;
2122                 ret = cacl_get(context, talloc_tos(), srv,
2123                                ipc_srv == NULL ? NULL : ipc_srv->cli,
2124                                &ipc_srv->pol, path,
2125                                filename,
2126                                discard_const_p(char, value),
2127                                size);
2128                 if (ret < 0 && errno == 0) {
2129                         errno = SMBC_errno(context, srv->cli);
2130                 }
2131                 TALLOC_FREE(frame);
2132                 return ret;
2133         }
2134
2135         /* Unsupported attribute name */
2136         errno = EINVAL;
2137         TALLOC_FREE(frame);
2138         return -1;
2139 }
2140
2141
2142 int
2143 SMBC_removexattr_ctx(SMBCCTX *context,
2144                      const char *fname,
2145                      const char *name)
2146 {
2147         int ret;
2148         SMBCSRV *srv = NULL;
2149         SMBCSRV *ipc_srv = NULL;
2150         char *server = NULL;
2151         char *share = NULL;
2152         char *user = NULL;
2153         char *password = NULL;
2154         char *workgroup = NULL;
2155         char *path = NULL;
2156         TALLOC_CTX *frame = talloc_stackframe();
2157
2158         if (!context || !context->internal->initialized) {
2159                 errno = EINVAL;  /* Best I can think of ... */
2160                 TALLOC_FREE(frame);
2161                 return -1;
2162         }
2163
2164         if (!fname) {
2165                 errno = EINVAL;
2166                 TALLOC_FREE(frame);
2167                 return -1;
2168         }
2169
2170         DEBUG(4, ("smbc_removexattr(%s, %s)\n", fname, name));
2171
2172         if (SMBC_parse_path(frame,
2173                             context,
2174                             fname,
2175                             &workgroup,
2176                             &server,
2177                             &share,
2178                             &path,
2179                             &user,
2180                             &password,
2181                             NULL)) {
2182                 errno = EINVAL;
2183                 TALLOC_FREE(frame);
2184                 return -1;
2185         }
2186
2187         if (!user || user[0] == (char)0) {
2188                 user = talloc_strdup(frame, smbc_getUser(context));
2189                 if (!user) {
2190                         errno = ENOMEM;
2191                         TALLOC_FREE(frame);
2192                         return -1;
2193                 }
2194         }
2195
2196         srv = SMBC_server(frame, context, True,
2197                           server, share, &workgroup, &user, &password);
2198         if (!srv) {
2199                 TALLOC_FREE(frame);
2200                 return -1;  /* errno set by SMBC_server */
2201         }
2202
2203         if (! srv->no_nt_session) {
2204                 ipc_srv = SMBC_attr_server(frame, context, server, share,
2205                                            &workgroup, &user, &password);
2206                 if (! ipc_srv) {
2207                         srv->no_nt_session = True;
2208                 }
2209         } else {
2210                 ipc_srv = NULL;
2211         }
2212
2213         if (! ipc_srv) {
2214                 TALLOC_FREE(frame);
2215                 return -1; /* errno set by SMBC_attr_server */
2216         }
2217
2218         /* Are they asking to set the entire ACL? */
2219         if (strcasecmp_m(name, "system.nt_sec_desc.*") == 0 ||
2220             strcasecmp_m(name, "system.nt_sec_desc.*+") == 0) {
2221
2222                 /* Yup. */
2223                 ret = cacl_set(context, talloc_tos(), srv->cli,
2224                                ipc_srv->cli, &ipc_srv->pol, path,
2225                                NULL, SMBC_XATTR_MODE_REMOVE_ALL, 0);
2226                 TALLOC_FREE(frame);
2227                 return ret;
2228         }
2229
2230         /*
2231          * Are they asking to remove one or more spceific security descriptor
2232          * attributes?
2233          */
2234         if (strcasecmp_m(name, "system.nt_sec_desc.revision") == 0 ||
2235             strcasecmp_m(name, "system.nt_sec_desc.owner") == 0 ||
2236             strcasecmp_m(name, "system.nt_sec_desc.owner+") == 0 ||
2237             strcasecmp_m(name, "system.nt_sec_desc.group") == 0 ||
2238             strcasecmp_m(name, "system.nt_sec_desc.group+") == 0 ||
2239             strncasecmp_m(name, "system.nt_sec_desc.acl", 22) == 0 ||
2240             strncasecmp_m(name, "system.nt_sec_desc.acl+", 23) == 0) {
2241
2242                 /* Yup. */
2243                 ret = cacl_set(context, talloc_tos(), srv->cli,
2244                                ipc_srv->cli, &ipc_srv->pol, path,
2245                                discard_const_p(char, name) + 19,
2246                                SMBC_XATTR_MODE_REMOVE, 0);
2247                 TALLOC_FREE(frame);
2248                 return ret;
2249         }
2250
2251         /* Unsupported attribute name */
2252         errno = EINVAL;
2253         TALLOC_FREE(frame);
2254         return -1;
2255 }
2256
2257 int
2258 SMBC_listxattr_ctx(SMBCCTX *context,
2259                    const char *fname,
2260                    char *list,
2261                    size_t size)
2262 {
2263         /*
2264          * This isn't quite what listxattr() is supposed to do.  This returns
2265          * the complete set of attribute names, always, rather than only those
2266          * attribute names which actually exist for a file.  Hmmm...
2267          */
2268         size_t retsize;
2269         const char supported_old[] =
2270                 "system.*\0"
2271                 "system.*+\0"
2272                 "system.nt_sec_desc.revision\0"
2273                 "system.nt_sec_desc.owner\0"
2274                 "system.nt_sec_desc.owner+\0"
2275                 "system.nt_sec_desc.group\0"
2276                 "system.nt_sec_desc.group+\0"
2277                 "system.nt_sec_desc.acl.*\0"
2278                 "system.nt_sec_desc.acl\0"
2279                 "system.nt_sec_desc.acl+\0"
2280                 "system.nt_sec_desc.*\0"
2281                 "system.nt_sec_desc.*+\0"
2282                 "system.dos_attr.*\0"
2283                 "system.dos_attr.mode\0"
2284                 "system.dos_attr.c_time\0"
2285                 "system.dos_attr.a_time\0"
2286                 "system.dos_attr.m_time\0"
2287                 ;
2288         const char supported_new[] =
2289                 "system.*\0"
2290                 "system.*+\0"
2291                 "system.nt_sec_desc.revision\0"
2292                 "system.nt_sec_desc.owner\0"
2293                 "system.nt_sec_desc.owner+\0"
2294                 "system.nt_sec_desc.group\0"
2295                 "system.nt_sec_desc.group+\0"
2296                 "system.nt_sec_desc.acl.*\0"
2297                 "system.nt_sec_desc.acl\0"
2298                 "system.nt_sec_desc.acl+\0"
2299                 "system.nt_sec_desc.*\0"
2300                 "system.nt_sec_desc.*+\0"
2301                 "system.dos_attr.*\0"
2302                 "system.dos_attr.mode\0"
2303                 "system.dos_attr.create_time\0"
2304                 "system.dos_attr.access_time\0"
2305                 "system.dos_attr.write_time\0"
2306                 "system.dos_attr.change_time\0"
2307                 ;
2308         const char * supported;
2309
2310         if (context->internal->full_time_names) {
2311                 supported = supported_new;
2312                 retsize = sizeof(supported_new);
2313         } else {
2314                 supported = supported_old;
2315                 retsize = sizeof(supported_old);
2316         }
2317
2318         if (size == 0) {
2319                 return retsize;
2320         }
2321
2322         if (retsize > size) {
2323                 errno = ERANGE;
2324                 return -1;
2325         }
2326
2327         /* this can't be strcpy() because there are embedded null characters */
2328         memcpy(list, supported, retsize);
2329         return retsize;
2330 }