nsswitch/libwbclient/wbc_sid.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    Winbind client API
   5
   6    Copyright (C) Gerald (Jerry) Carter 2007
   7    Copyright (C) Volker Lendecke 2010
   8
   9
  10    This library is free software; you can redistribute it and/or
  11    modify it under the terms of the GNU Lesser General Public
  12    License as published by the Free Software Foundation; either
  13    version 3 of the License, or (at your option) any later version.
  14
  15    This library is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18    Library General Public License for more details.
  19
  20    You should have received a copy of the GNU Lesser General Public License
  21    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  22 */
  23
  24 /* Required Headers */
  25
  26 #include "replace.h"
  27 #include "libwbclient.h"
  28 #include "../winbind_client.h"
  29
  30 /* Convert a sid to a string into a buffer. Return the string
  31  * length. If buflen is too small, return the string length that would
  32  * result if it was long enough. */
  33 int wbcSidToStringBuf(const struct wbcDomainSid *sid, char *buf, int buflen)
  34 {
  35         uint64_t id_auth;
  36         int i, ofs;
  37
  38         if (!sid) {
  39                 strlcpy(buf, "(NULL SID)", buflen);
  40                 return 10;      /* strlen("(NULL SID)") */
  41         }
  42
  43         id_auth = (uint64_t)sid->id_auth[5] +
  44                 ((uint64_t)sid->id_auth[4] << 8) +
  45                 ((uint64_t)sid->id_auth[3] << 16) +
  46                 ((uint64_t)sid->id_auth[2] << 24) +
  47                 ((uint64_t)sid->id_auth[1] << 32) +
  48                 ((uint64_t)sid->id_auth[0] << 40);
  49
  50         ofs = snprintf(buf, buflen, "S-%hhu-", (unsigned char)sid->sid_rev_num);
  51         if (id_auth >= UINT32_MAX) {
  52                 ofs += snprintf(buf + ofs, MAX(buflen - ofs, 0), "0x%llx",
  53                                 (unsigned long long)id_auth);
  54         } else {
  55                 ofs += snprintf(buf + ofs, MAX(buflen - ofs, 0), "%llu",
  56                                 (unsigned long long)id_auth);
  57         }
  58
  59         for (i = 0; i < sid->num_auths; i++) {
  60                 ofs += snprintf(buf + ofs, MAX(buflen - ofs, 0), "-%u",
  61                                 (unsigned int)sid->sub_auths[i]);
  62         }
  63         return ofs;
  64 }
  65
  66 /* Convert a binary SID to a character string */
  67 wbcErr wbcSidToString(const struct wbcDomainSid *sid,
  68                       char **sid_string)
  69 {
  70         char buf[WBC_SID_STRING_BUFLEN];
  71         char *result;
  72         int len;
  73
  74         if (!sid) {
  75                 return WBC_ERR_INVALID_SID;
  76         }
  77
  78         len = wbcSidToStringBuf(sid, buf, sizeof(buf));
  79
  80         if (len+1 > sizeof(buf)) {
  81                 return WBC_ERR_INVALID_SID;
  82         }
  83
  84         result = (char *)wbcAllocateMemory(len+1, 1, NULL);
  85         if (result == NULL) {
  86                 return WBC_ERR_NO_MEMORY;
  87         }
  88         memcpy(result, buf, len+1);
  89
  90         *sid_string = result;
  91         return WBC_ERR_SUCCESS;
  92 }
  93
  94 #define AUTHORITY_MASK  (~(0xffffffffffffULL))
  95
  96 /* Convert a character string to a binary SID */
  97 wbcErr wbcStringToSid(const char *str,
  98                       struct wbcDomainSid *sid)
  99 {
 100         const char *p;
 101         char *q;
 102         uint64_t x;
 103         wbcErr wbc_status = WBC_ERR_UNKNOWN_FAILURE;
 104
 105         if (!sid) {
 106                 wbc_status = WBC_ERR_INVALID_PARAM;
 107                 BAIL_ON_WBC_ERROR(wbc_status);
 108         }
 109
 110         /* Sanity check for either "S-" or "s-" */
 111
 112         if (!str
 113             || (str[0]!='S' && str[0]!='s')
 114             || (str[1]!='-'))
 115         {
 116                 wbc_status = WBC_ERR_INVALID_PARAM;
 117                 BAIL_ON_WBC_ERROR(wbc_status);
 118         }
 119
 120         /* Get the SID revision number */
 121
 122         p = str+2;
 123         x = (uint64_t)strtoul(p, &q, 10);
 124         if (x==0 || x > UINT8_MAX || !q || *q!='-') {
 125                 wbc_status = WBC_ERR_INVALID_SID;
 126                 BAIL_ON_WBC_ERROR(wbc_status);
 127         }
 128         sid->sid_rev_num = (uint8_t)x;
 129
 130         /*
 131          * Next the Identifier Authority.  This is stored big-endian in a
 132          * 6 byte array. If the authority value is >= UINT_MAX, then it should
 133          * be expressed as a hex value, according to MS-DTYP.
 134          */
 135         p = q+1;
 136         x = strtoull(p, &q, 0);
 137         if (!q || *q!='-' || (x & AUTHORITY_MASK)) {
 138                 wbc_status = WBC_ERR_INVALID_SID;
 139                 BAIL_ON_WBC_ERROR(wbc_status);
 140         }
 141         sid->id_auth[5] = (x & 0x0000000000ffULL);
 142         sid->id_auth[4] = (x & 0x00000000ff00ULL) >> 8;
 143         sid->id_auth[3] = (x & 0x000000ff0000ULL) >> 16;
 144         sid->id_auth[2] = (x & 0x0000ff000000ULL) >> 24;
 145         sid->id_auth[1] = (x & 0x00ff00000000ULL) >> 32;
 146         sid->id_auth[0] = (x & 0xff0000000000ULL) >> 40;
 147
 148         /* now read the the subauthorities */
 149         p = q +1;
 150         sid->num_auths = 0;
 151         while (sid->num_auths < WBC_MAXSUBAUTHS) {
 152                 x = strtoull(p, &q, 10);
 153                 if (p == q)
 154                         break;
 155                 if (x > UINT32_MAX) {
 156                         wbc_status = WBC_ERR_INVALID_SID;
 157                         BAIL_ON_WBC_ERROR(wbc_status);
 158                 }
 159                 sid->sub_auths[sid->num_auths++] = x;
 160
 161                 if (*q != '-') {
 162                         break;
 163                 }
 164                 p = q + 1;
 165         }
 166
 167         /* IF we ended early, then the SID could not be converted */
 168
 169         if (q && *q!='\0') {
 170                 wbc_status = WBC_ERR_INVALID_SID;
 171                 BAIL_ON_WBC_ERROR(wbc_status);
 172         }
 173
 174         wbc_status = WBC_ERR_SUCCESS;
 175
 176 done:
 177         return wbc_status;
 178
 179 }
 180
 181
 182 /* Convert a domain and name to SID */
 183 wbcErr wbcCtxLookupName(struct wbcContext *ctx,
 184                         const char *domain,
 185                         const char *name,
 186                         struct wbcDomainSid *sid,
 187                         enum wbcSidType *name_type)
 188 {
 189         struct winbindd_request request;
 190         struct winbindd_response response;
 191         wbcErr wbc_status = WBC_ERR_UNKNOWN_FAILURE;
 192
 193         if (!sid || !name_type) {
 194                 wbc_status = WBC_ERR_INVALID_PARAM;
 195                 BAIL_ON_WBC_ERROR(wbc_status);
 196         }
 197
 198         /* Initialize request */
 199
 200         ZERO_STRUCT(request);
 201         ZERO_STRUCT(response);
 202
 203         /* dst is already null terminated from the memset above */
 204
 205         strncpy(request.data.name.dom_name, domain,
 206                 sizeof(request.data.name.dom_name)-1);
 207         strncpy(request.data.name.name, name,
 208                 sizeof(request.data.name.name)-1);
 209
 210         wbc_status = wbcRequestResponse(ctx, WINBINDD_LOOKUPNAME,
 211                                         &request,
 212                                         &response);
 213         BAIL_ON_WBC_ERROR(wbc_status);
 214
 215         wbc_status = wbcStringToSid(response.data.sid.sid, sid);
 216         BAIL_ON_WBC_ERROR(wbc_status);
 217
 218         *name_type = (enum wbcSidType)response.data.sid.type;
 219
 220         wbc_status = WBC_ERR_SUCCESS;
 221
 222  done:
 223         return wbc_status;
 224 }
 225
 226 wbcErr wbcLookupName(const char *domain,
 227                      const char *name,
 228                      struct wbcDomainSid *sid,
 229                      enum wbcSidType *name_type)
 230 {
 231         return wbcCtxLookupName(NULL, domain, name, sid, name_type);
 232 }
 233
 234
 235 /* Convert a SID to a domain and name */
 236 wbcErr wbcCtxLookupSid(struct wbcContext *ctx,
 237                        const struct wbcDomainSid *sid,
 238                        char **pdomain,
 239                        char **pname,
 240                        enum wbcSidType *pname_type)
 241 {
 242         struct winbindd_request request;
 243         struct winbindd_response response;
 244         wbcErr wbc_status = WBC_ERR_UNKNOWN_FAILURE;
 245         char *domain, *name;
 246
 247         if (!sid) {
 248                 return WBC_ERR_INVALID_PARAM;
 249         }
 250
 251         /* Initialize request */
 252
 253         ZERO_STRUCT(request);
 254         ZERO_STRUCT(response);
 255
 256         wbcSidToStringBuf(sid, request.data.sid, sizeof(request.data.sid));
 257
 258         /* Make request */
 259
 260         wbc_status = wbcRequestResponse(ctx, WINBINDD_LOOKUPSID,
 261                                         &request,
 262                                         &response);
 263         if (!WBC_ERROR_IS_OK(wbc_status)) {
 264                 return wbc_status;
 265         }
 266
 267         /* Copy out result */
 268
 269         wbc_status = WBC_ERR_NO_MEMORY;
 270         domain = NULL;
 271         name = NULL;
 272
 273         domain = wbcStrDup(response.data.name.dom_name);
 274         if (domain == NULL) {
 275                 goto done;
 276         }
 277         name = wbcStrDup(response.data.name.name);
 278         if (name == NULL) {
 279                 goto done;
 280         }
 281         if (pdomain != NULL) {
 282                 *pdomain = domain;
 283                 domain = NULL;
 284         }
 285         if (pname != NULL) {
 286                 *pname = name;
 287                 name = NULL;
 288         }
 289         if (pname_type != NULL) {
 290                 *pname_type = (enum wbcSidType)response.data.name.type;
 291         }
 292         wbc_status = WBC_ERR_SUCCESS;
 293 done:
 294         wbcFreeMemory(name);
 295         wbcFreeMemory(domain);
 296         return wbc_status;
 297 }
 298
 299 wbcErr wbcLookupSid(const struct wbcDomainSid *sid,
 300                     char **pdomain,
 301                     char **pname,
 302                     enum wbcSidType *pname_type)
 303 {
 304         return wbcCtxLookupSid(NULL, sid, pdomain, pname, pname_type);
 305 }
 306
 307 static void wbcDomainInfosDestructor(void *ptr)
 308 {
 309         struct wbcDomainInfo *i = (struct wbcDomainInfo *)ptr;
 310
 311         while (i->short_name != NULL) {
 312                 wbcFreeMemory(i->short_name);
 313                 wbcFreeMemory(i->dns_name);
 314                 i += 1;
 315         }
 316 }
 317
 318 static void wbcTranslatedNamesDestructor(void *ptr)
 319 {
 320         struct wbcTranslatedName *n = (struct wbcTranslatedName *)ptr;
 321
 322         while (n->name != NULL) {
 323                 wbcFreeMemory(n->name);
 324                 n += 1;
 325         }
 326 }
 327
 328 wbcErr wbcCtxLookupSids(struct wbcContext *ctx,
 329                         const struct wbcDomainSid *sids, int num_sids,
 330                         struct wbcDomainInfo **pdomains, int *pnum_domains,
 331                         struct wbcTranslatedName **pnames)
 332 {
 333         struct winbindd_request request;
 334         struct winbindd_response response;
 335         wbcErr wbc_status = WBC_ERR_UNKNOWN_FAILURE;
 336         int buflen, i, extra_len, num_domains, num_names;
 337         char *sidlist, *p, *q, *extra_data;
 338         struct wbcDomainInfo *domains = NULL;
 339         struct wbcTranslatedName *names = NULL;
 340
 341         buflen = num_sids * (WBC_SID_STRING_BUFLEN + 1) + 1;
 342
 343         sidlist = (char *)malloc(buflen);
 344         if (sidlist == NULL) {
 345                 return WBC_ERR_NO_MEMORY;
 346         }
 347
 348         p = sidlist;
 349
 350         for (i=0; i<num_sids; i++) {
 351                 int remaining;
 352                 int len;
 353
 354                 remaining = buflen - (p - sidlist);
 355
 356                 len = wbcSidToStringBuf(&sids[i], p, remaining);
 357                 if (len > remaining) {
 358                         free(sidlist);
 359                         return WBC_ERR_UNKNOWN_FAILURE;
 360                 }
 361
 362                 p += len;
 363                 *p++ = '\n';
 364         }
 365         *p++ = '\0';
 366
 367         ZERO_STRUCT(request);
 368         ZERO_STRUCT(response);
 369
 370         request.extra_data.data = sidlist;
 371         request.extra_len = p - sidlist;
 372
 373         wbc_status = wbcRequestResponse(ctx, WINBINDD_LOOKUPSIDS,
 374                                         &request, &response);
 375         free(sidlist);
 376         if (!WBC_ERROR_IS_OK(wbc_status)) {
 377                 return wbc_status;
 378         }
 379
 380         extra_len = response.length - sizeof(struct winbindd_response);
 381         extra_data = (char *)response.extra_data.data;
 382
 383         if ((extra_len <= 0) || (extra_data[extra_len-1] != '\0')) {
 384                 goto wbc_err_invalid;
 385         }
 386
 387         p = extra_data;
 388
 389         num_domains = strtoul(p, &q, 10);
 390         if (*q != '\n') {
 391                 goto wbc_err_invalid;
 392         }
 393         p = q+1;
 394
 395         domains = (struct wbcDomainInfo *)wbcAllocateMemory(
 396                 num_domains+1, sizeof(struct wbcDomainInfo),
 397                 wbcDomainInfosDestructor);
 398         if (domains == NULL) {
 399                 wbc_status = WBC_ERR_NO_MEMORY;
 400                 goto fail;
 401         }
 402
 403         for (i=0; i<num_domains; i++) {
 404
 405                 q = strchr(p, ' ');
 406                 if (q == NULL) {
 407                         goto wbc_err_invalid;
 408                 }
 409                 *q = '\0';
 410                 wbc_status = wbcStringToSid(p, &domains[i].sid);
 411                 if (!WBC_ERROR_IS_OK(wbc_status)) {
 412                         goto fail;
 413                 }
 414                 p = q+1;
 415
 416                 q = strchr(p, '\n');
 417                 if (q == NULL) {
 418                         goto wbc_err_invalid;
 419                 }
 420                 *q = '\0';
 421                 domains[i].short_name = wbcStrDup(p);
 422                 if (domains[i].short_name == NULL) {
 423                         wbc_status = WBC_ERR_NO_MEMORY;
 424                         goto fail;
 425                 }
 426                 p = q+1;
 427         }
 428
 429         num_names = strtoul(p, &q, 10);
 430         if (*q != '\n') {
 431                 goto wbc_err_invalid;
 432         }
 433         p = q+1;
 434
 435         if (num_names != num_sids) {
 436                 goto wbc_err_invalid;
 437         }
 438
 439         names = (struct wbcTranslatedName *)wbcAllocateMemory(
 440                 num_names+1, sizeof(struct wbcTranslatedName),
 441                 wbcTranslatedNamesDestructor);
 442         if (names == NULL) {
 443                 wbc_status = WBC_ERR_NO_MEMORY;
 444                 goto fail;
 445         }
 446
 447         for (i=0; i<num_names; i++) {
 448
 449                 names[i].domain_index = strtoul(p, &q, 10);
 450                 if (names[i].domain_index < 0) {
 451                         goto wbc_err_invalid;
 452                 }
 453                 if (names[i].domain_index >= num_domains) {
 454                         goto wbc_err_invalid;
 455                 }
 456
 457                 if (*q != ' ') {
 458                         goto wbc_err_invalid;
 459                 }
 460                 p = q+1;
 461
 462                 names[i].type = strtoul(p, &q, 10);
 463                 if (*q != ' ') {
 464                         goto wbc_err_invalid;
 465                 }
 466                 p = q+1;
 467
 468                 q = strchr(p, '\n');
 469                 if (q == NULL) {
 470                         goto wbc_err_invalid;
 471                 }
 472                 *q = '\0';
 473                 names[i].name = wbcStrDup(p);
 474                 if (names[i].name == NULL) {
 475                         wbc_status = WBC_ERR_NO_MEMORY;
 476                         goto fail;
 477                 }
 478                 p = q+1;
 479         }
 480         if (*p != '\0') {
 481                 goto wbc_err_invalid;
 482         }
 483
 484         *pdomains = domains;
 485         *pnames = names;
 486         winbindd_free_response(&response);
 487         return WBC_ERR_SUCCESS;
 488
 489 wbc_err_invalid:
 490         wbc_status = WBC_ERR_INVALID_RESPONSE;
 491 fail:
 492         winbindd_free_response(&response);
 493         wbcFreeMemory(domains);
 494         wbcFreeMemory(names);
 495         return wbc_status;
 496 }
 497
 498 wbcErr wbcLookupSids(const struct wbcDomainSid *sids, int num_sids,
 499                      struct wbcDomainInfo **pdomains, int *pnum_domains,
 500                      struct wbcTranslatedName **pnames)
 501 {
 502         return wbcCtxLookupSids(NULL, sids, num_sids, pdomains,
 503                                 pnum_domains, pnames);
 504 }
 505
 506 /* Translate a collection of RIDs within a domain to names */
 507
 508 wbcErr wbcCtxLookupRids(struct wbcContext *ctx, struct wbcDomainSid *dom_sid,
 509                      int num_rids,
 510                      uint32_t *rids,
 511                      const char **pp_domain_name,
 512                      const char ***pnames,
 513                      enum wbcSidType **ptypes)
 514 {
 515         size_t i, len, ridbuf_size;
 516         char *ridlist;
 517         char *p;
 518         struct winbindd_request request;
 519         struct winbindd_response response;
 520         char *domain_name = NULL;
 521         const char **names = NULL;
 522         enum wbcSidType *types = NULL;
 523         wbcErr wbc_status = WBC_ERR_UNKNOWN_FAILURE;
 524
 525         /* Initialise request */
 526
 527         ZERO_STRUCT(request);
 528         ZERO_STRUCT(response);
 529
 530         if (!dom_sid || (num_rids == 0)) {
 531                 wbc_status = WBC_ERR_INVALID_PARAM;
 532                 BAIL_ON_WBC_ERROR(wbc_status);
 533         }
 534
 535         wbcSidToStringBuf(dom_sid, request.data.sid, sizeof(request.data.sid));
 536
 537         /* Even if all the Rids were of maximum 32bit values,
 538            we would only have 11 bytes per rid in the final array
 539            ("4294967296" + \n).  Add one more byte for the
 540            terminating '\0' */
 541
 542         ridbuf_size = (sizeof(char)*11) * num_rids + 1;
 543
 544         ridlist = (char *)malloc(ridbuf_size);
 545         BAIL_ON_PTR_ERROR(ridlist, wbc_status);
 546
 547         len = 0;
 548         for (i=0; i<num_rids; i++) {
 549                 len += snprintf(ridlist + len, ridbuf_size - len, "%u\n",
 550                                 rids[i]);
 551         }
 552         ridlist[len] = '\0';
 553         len += 1;
 554
 555         request.extra_data.data = ridlist;
 556         request.extra_len = len;
 557
 558         wbc_status = wbcRequestResponse(ctx, WINBINDD_LOOKUPRIDS,
 559                                         &request,
 560                                         &response);
 561         free(ridlist);
 562         BAIL_ON_WBC_ERROR(wbc_status);
 563
 564         domain_name = wbcStrDup(response.data.domain_name);
 565         BAIL_ON_PTR_ERROR(domain_name, wbc_status);
 566
 567         names = wbcAllocateStringArray(num_rids);
 568         BAIL_ON_PTR_ERROR(names, wbc_status);
 569
 570         types = (enum wbcSidType *)wbcAllocateMemory(
 571                 num_rids, sizeof(enum wbcSidType), NULL);
 572         BAIL_ON_PTR_ERROR(types, wbc_status);
 573
 574         p = (char *)response.extra_data.data;
 575
 576         for (i=0; i<num_rids; i++) {
 577                 char *q;
 578
 579                 if (*p == '\0') {
 580                         wbc_status = WBC_ERR_INVALID_RESPONSE;
 581                         goto done;
 582                 }
 583
 584                 types[i] = (enum wbcSidType)strtoul(p, &q, 10);
 585
 586                 if (*q != ' ') {
 587                         wbc_status = WBC_ERR_INVALID_RESPONSE;
 588                         goto done;
 589                 }
 590
 591                 p = q+1;
 592
 593                 if ((q = strchr(p, '\n')) == NULL) {
 594                         wbc_status = WBC_ERR_INVALID_RESPONSE;
 595                         goto done;
 596                 }
 597
 598                 *q = '\0';
 599
 600                 names[i] = strdup(p);
 601                 BAIL_ON_PTR_ERROR(names[i], wbc_status);
 602
 603                 p = q+1;
 604         }
 605
 606         if (*p != '\0') {
 607                 wbc_status = WBC_ERR_INVALID_RESPONSE;
 608                 goto done;
 609         }
 610
 611         wbc_status = WBC_ERR_SUCCESS;
 612
 613  done:
 614         winbindd_free_response(&response);
 615
 616         if (WBC_ERROR_IS_OK(wbc_status)) {
 617                 *pp_domain_name = domain_name;
 618                 *pnames = names;
 619                 *ptypes = types;
 620         }
 621         else {
 622                 wbcFreeMemory(domain_name);
 623                 wbcFreeMemory(names);
 624                 wbcFreeMemory(types);
 625         }
 626
 627         return wbc_status;
 628 }
 629
 630 wbcErr wbcLookupRids(struct wbcDomainSid *dom_sid,
 631                      int num_rids,
 632                      uint32_t *rids,
 633                      const char **pp_domain_name,
 634                      const char ***pnames,
 635                      enum wbcSidType **ptypes)
 636 {
 637         return wbcCtxLookupRids(NULL, dom_sid, num_rids, rids,
 638                                 pp_domain_name, pnames, ptypes);
 639 }
 640
 641 /* Get the groups a user belongs to */
 642 wbcErr wbcCtxLookupUserSids(struct wbcContext *ctx,
 643                             const struct wbcDomainSid *user_sid,
 644                             bool domain_groups_only,
 645                             uint32_t *num_sids,
 646                             struct wbcDomainSid **_sids)
 647 {
 648         uint32_t i;
 649         const char *s;
 650         struct winbindd_request request;
 651         struct winbindd_response response;
 652         struct wbcDomainSid *sids = NULL;
 653         wbcErr wbc_status = WBC_ERR_UNKNOWN_FAILURE;
 654         int cmd;
 655
 656         /* Initialise request */
 657
 658         ZERO_STRUCT(request);
 659         ZERO_STRUCT(response);
 660
 661         if (!user_sid) {
 662                 wbc_status = WBC_ERR_INVALID_PARAM;
 663                 BAIL_ON_WBC_ERROR(wbc_status);
 664         }
 665
 666         wbcSidToStringBuf(user_sid, request.data.sid, sizeof(request.data.sid));
 667
 668         if (domain_groups_only) {
 669                 cmd = WINBINDD_GETUSERDOMGROUPS;
 670         } else {
 671                 cmd = WINBINDD_GETUSERSIDS;
 672         }
 673
 674         wbc_status = wbcRequestResponse(ctx, cmd,
 675                                         &request,
 676                                         &response);
 677         BAIL_ON_WBC_ERROR(wbc_status);
 678
 679         if (response.data.num_entries &&
 680             !response.extra_data.data) {
 681                 wbc_status = WBC_ERR_INVALID_RESPONSE;
 682                 BAIL_ON_WBC_ERROR(wbc_status);
 683         }
 684
 685         sids = (struct wbcDomainSid *)wbcAllocateMemory(
 686                 response.data.num_entries, sizeof(struct wbcDomainSid),
 687                 NULL);
 688         BAIL_ON_PTR_ERROR(sids, wbc_status);
 689
 690         s = (const char *)response.extra_data.data;
 691         for (i = 0; i < response.data.num_entries; i++) {
 692                 char *n = strchr(s, '\n');
 693                 if (n) {
 694                         *n = '\0';
 695                 }
 696                 wbc_status = wbcStringToSid(s, &sids[i]);
 697                 BAIL_ON_WBC_ERROR(wbc_status);
 698                 s += strlen(s) + 1;
 699         }
 700
 701         *num_sids = response.data.num_entries;
 702         *_sids = sids;
 703         sids = NULL;
 704         wbc_status = WBC_ERR_SUCCESS;
 705
 706  done:
 707         winbindd_free_response(&response);
 708         if (sids) {
 709                 wbcFreeMemory(sids);
 710         }
 711
 712         return wbc_status;
 713 }
 714
 715 wbcErr wbcLookupUserSids(const struct wbcDomainSid *user_sid,
 716                          bool domain_groups_only,
 717                          uint32_t *num_sids,
 718                          struct wbcDomainSid **_sids)
 719 {
 720         return wbcCtxLookupUserSids(NULL, user_sid, domain_groups_only,
 721                                     num_sids, _sids);
 722 }
 723
 724 static inline
 725 wbcErr _sid_to_rid(struct wbcDomainSid *sid, uint32_t *rid)
 726 {
 727         if (sid->num_auths < 1) {
 728                 return WBC_ERR_INVALID_RESPONSE;
 729         }
 730         *rid = sid->sub_auths[sid->num_auths - 1];
 731
 732         return WBC_ERR_SUCCESS;
 733 }
 734
 735 /* Get alias membership for sids */
 736 wbcErr wbcCtxGetSidAliases(struct wbcContext *ctx,
 737                            const struct wbcDomainSid *dom_sid,
 738                            struct wbcDomainSid *sids,
 739                            uint32_t num_sids,
 740                            uint32_t **alias_rids,
 741                            uint32_t *num_alias_rids)
 742 {
 743         uint32_t i;
 744         const char *s;
 745         struct winbindd_request request;
 746         struct winbindd_response response;
 747         ssize_t extra_data_len = 0;
 748         char * extra_data = NULL;
 749         ssize_t buflen = 0;
 750         struct wbcDomainSid sid;
 751         wbcErr wbc_status = WBC_ERR_UNKNOWN_FAILURE;
 752         uint32_t * rids = NULL;
 753
 754         /* Initialise request */
 755
 756         ZERO_STRUCT(request);
 757         ZERO_STRUCT(response);
 758
 759         if (!dom_sid) {
 760                 wbc_status = WBC_ERR_INVALID_PARAM;
 761                 goto done;
 762         }
 763
 764         wbcSidToStringBuf(dom_sid, request.data.sid, sizeof(request.data.sid));
 765
 766         /* Lets assume each sid is around 57 characters
 767          * S-1-5-21-AAAAAAAAAAA-BBBBBBBBBBB-CCCCCCCCCCC-DDDDDDDDDDD\n */
 768         buflen = 57 * num_sids;
 769         extra_data = (char *)malloc(buflen);
 770         if (!extra_data) {
 771                 wbc_status = WBC_ERR_NO_MEMORY;
 772                 goto done;
 773         }
 774
 775         /* Build the sid list */
 776         for (i=0; i<num_sids; i++) {
 777                 char sid_str[WBC_SID_STRING_BUFLEN];
 778                 size_t sid_len;
 779
 780                 sid_len = wbcSidToStringBuf(&sids[i], sid_str, sizeof(sid_str));
 781
 782                 if (buflen < extra_data_len + sid_len + 2) {
 783                         buflen *= 2;
 784                         extra_data = (char *)realloc(extra_data, buflen);
 785                         if (!extra_data) {
 786                                 wbc_status = WBC_ERR_NO_MEMORY;
 787                                 BAIL_ON_WBC_ERROR(wbc_status);
 788                         }
 789                 }
 790
 791                 strncpy(&extra_data[extra_data_len], sid_str,
 792                         buflen - extra_data_len);
 793                 extra_data_len += sid_len;
 794                 extra_data[extra_data_len++] = '\n';
 795                 extra_data[extra_data_len] = '\0';
 796         }
 797         extra_data_len += 1;
 798
 799         request.extra_data.data = extra_data;
 800         request.extra_len = extra_data_len;
 801
 802         wbc_status = wbcRequestResponse(ctx, WINBINDD_GETSIDALIASES,
 803                                         &request,
 804                                         &response);
 805         BAIL_ON_WBC_ERROR(wbc_status);
 806
 807         if (response.data.num_entries &&
 808             !response.extra_data.data) {
 809                 wbc_status = WBC_ERR_INVALID_RESPONSE;
 810                 goto done;
 811         }
 812
 813         rids = (uint32_t *)wbcAllocateMemory(response.data.num_entries,
 814                                              sizeof(uint32_t), NULL);
 815         BAIL_ON_PTR_ERROR(sids, wbc_status);
 816
 817         s = (const char *)response.extra_data.data;
 818         for (i = 0; i < response.data.num_entries; i++) {
 819                 char *n = strchr(s, '\n');
 820                 if (n) {
 821                         *n = '\0';
 822                 }
 823                 wbc_status = wbcStringToSid(s, &sid);
 824                 BAIL_ON_WBC_ERROR(wbc_status);
 825                 wbc_status = _sid_to_rid(&sid, &rids[i]);
 826                 BAIL_ON_WBC_ERROR(wbc_status);
 827                 s += strlen(s) + 1;
 828         }
 829
 830         *num_alias_rids = response.data.num_entries;
 831         *alias_rids = rids;
 832         rids = NULL;
 833         wbc_status = WBC_ERR_SUCCESS;
 834
 835  done:
 836         free(extra_data);
 837         winbindd_free_response(&response);
 838         wbcFreeMemory(rids);
 839         return wbc_status;
 840 }
 841
 842 wbcErr wbcGetSidAliases(const struct wbcDomainSid *dom_sid,
 843                         struct wbcDomainSid *sids,
 844                         uint32_t num_sids,
 845                         uint32_t **alias_rids,
 846                         uint32_t *num_alias_rids)
 847 {
 848         return wbcCtxGetSidAliases(NULL, dom_sid, sids, num_sids,
 849                                    alias_rids, num_alias_rids);
 850 }
 851
 852
 853 /* Lists Users */
 854 wbcErr wbcCtxListUsers(struct wbcContext *ctx,
 855                        const char *domain_name,
 856                        uint32_t *_num_users,
 857                        const char ***_users)
 858 {
 859         wbcErr wbc_status = WBC_ERR_UNKNOWN_FAILURE;
 860         struct winbindd_request request;
 861         struct winbindd_response response;
 862         uint32_t num_users = 0;
 863         const char **users = NULL;
 864         const char *next;
 865
 866         /* Initialise request */
 867
 868         ZERO_STRUCT(request);
 869         ZERO_STRUCT(response);
 870
 871         if (domain_name) {
 872                 strncpy(request.domain_name, domain_name,
 873                         sizeof(request.domain_name)-1);
 874         }
 875
 876         wbc_status = wbcRequestResponse(ctx, WINBINDD_LIST_USERS,
 877                                         &request,
 878                                         &response);
 879         BAIL_ON_WBC_ERROR(wbc_status);
 880
 881         users = wbcAllocateStringArray(response.data.num_entries);
 882         if (users == NULL) {
 883                 return WBC_ERR_NO_MEMORY;
 884         }
 885
 886         /* Look through extra data */
 887
 888         next = (const char *)response.extra_data.data;
 889         while (next) {
 890                 const char *current;
 891                 char *k;
 892
 893                 if (num_users >= response.data.num_entries) {
 894                         wbc_status = WBC_ERR_INVALID_RESPONSE;
 895                         goto done;
 896                 }
 897
 898                 current = next;
 899                 k = strchr(next, ',');
 900
 901                 if (k) {
 902                         k[0] = '\0';
 903                         next = k+1;
 904                 } else {
 905                         next = NULL;
 906                 }
 907
 908                 users[num_users] = strdup(current);
 909                 BAIL_ON_PTR_ERROR(users[num_users], wbc_status);
 910                 num_users += 1;
 911         }
 912         if (num_users != response.data.num_entries) {
 913                 wbc_status = WBC_ERR_INVALID_RESPONSE;
 914                 goto done;
 915         }
 916
 917         *_num_users = response.data.num_entries;
 918         *_users = users;
 919         users = NULL;
 920         wbc_status = WBC_ERR_SUCCESS;
 921
 922  done:
 923         winbindd_free_response(&response);
 924         wbcFreeMemory(users);
 925         return wbc_status;
 926 }
 927
 928 wbcErr wbcListUsers(const char *domain_name,
 929                     uint32_t *_num_users,
 930                     const char ***_users)
 931 {
 932         return wbcCtxListUsers(NULL, domain_name, _num_users, _users);
 933 }
 934
 935 /* Lists Groups */
 936 wbcErr wbcCtxListGroups(struct wbcContext *ctx,
 937                         const char *domain_name,
 938                         uint32_t *_num_groups,
 939                         const char ***_groups)
 940 {
 941         wbcErr wbc_status = WBC_ERR_UNKNOWN_FAILURE;
 942         struct winbindd_request request;
 943         struct winbindd_response response;
 944         uint32_t num_groups = 0;
 945         const char **groups = NULL;
 946         const char *next;
 947
 948         /* Initialise request */
 949
 950         ZERO_STRUCT(request);
 951         ZERO_STRUCT(response);
 952
 953         if (domain_name) {
 954                 strncpy(request.domain_name, domain_name,
 955                         sizeof(request.domain_name)-1);
 956         }
 957
 958         wbc_status = wbcRequestResponse(ctx, WINBINDD_LIST_GROUPS,
 959                                         &request,
 960                                         &response);
 961         BAIL_ON_WBC_ERROR(wbc_status);
 962
 963         groups = wbcAllocateStringArray(response.data.num_entries);
 964         if (groups == NULL) {
 965                 return WBC_ERR_NO_MEMORY;
 966         }
 967
 968         /* Look through extra data */
 969
 970         next = (const char *)response.extra_data.data;
 971         while (next) {
 972                 const char *current;
 973                 char *k;
 974
 975                 if (num_groups >= response.data.num_entries) {
 976                         wbc_status = WBC_ERR_INVALID_RESPONSE;
 977                         goto done;
 978                 }
 979
 980                 current = next;
 981                 k = strchr(next, ',');
 982
 983                 if (k) {
 984                         k[0] = '\0';
 985                         next = k+1;
 986                 } else {
 987                         next = NULL;
 988                 }
 989
 990                 groups[num_groups] = strdup(current);
 991                 BAIL_ON_PTR_ERROR(groups[num_groups], wbc_status);
 992                 num_groups += 1;
 993         }
 994         if (num_groups != response.data.num_entries) {
 995                 wbc_status = WBC_ERR_INVALID_RESPONSE;
 996                 goto done;
 997         }
 998
 999         *_num_groups = response.data.num_entries;
1000         *_groups = groups;
1001         groups = NULL;
1002         wbc_status = WBC_ERR_SUCCESS;
1003
1004  done:
1005         winbindd_free_response(&response);
1006         wbcFreeMemory(groups);
1007         return wbc_status;
1008 }
1009
1010 wbcErr wbcListGroups(const char *domain_name,
1011                      uint32_t *_num_groups,
1012                      const char ***_groups)
1013 {
1014         return wbcCtxListGroups(NULL, domain_name, _num_groups, _groups);
1015 }
1016
1017 wbcErr wbcCtxGetDisplayName(struct wbcContext *ctx,
1018                             const struct wbcDomainSid *sid,
1019                             char **pdomain,
1020                             char **pfullname,
1021                             enum wbcSidType *pname_type)
1022 {
1023         wbcErr wbc_status;
1024         char *domain = NULL;
1025         char *name = NULL;
1026         enum wbcSidType name_type;
1027
1028         wbc_status = wbcCtxLookupSid(ctx, sid, &domain, &name, &name_type);
1029         BAIL_ON_WBC_ERROR(wbc_status);
1030
1031         if (name_type == WBC_SID_NAME_USER) {
1032                 uid_t uid;
1033                 struct passwd *pwd;
1034
1035                 wbc_status = wbcCtxSidToUid(ctx, sid, &uid);
1036                 BAIL_ON_WBC_ERROR(wbc_status);
1037
1038                 wbc_status = wbcCtxGetpwuid(ctx, uid, &pwd);
1039                 BAIL_ON_WBC_ERROR(wbc_status);
1040
1041                 wbcFreeMemory(name);
1042
1043                 name = wbcStrDup(pwd->pw_gecos);
1044                 wbcFreeMemory(pwd);
1045                 BAIL_ON_PTR_ERROR(name, wbc_status);
1046         }
1047
1048         wbc_status = WBC_ERR_SUCCESS;
1049
1050  done:
1051         if (WBC_ERROR_IS_OK(wbc_status)) {
1052                 *pdomain = domain;
1053                 *pfullname = name;
1054                 *pname_type = name_type;
1055         } else {
1056                 wbcFreeMemory(domain);
1057                 wbcFreeMemory(name);
1058         }
1059
1060         return wbc_status;
1061 }
1062
1063 wbcErr wbcGetDisplayName(const struct wbcDomainSid *sid,
1064                          char **pdomain,
1065                          char **pfullname,
1066                          enum wbcSidType *pname_type)
1067 {
1068         return wbcCtxGetDisplayName(NULL, sid, pdomain, pfullname, pname_type);
1069 }
1070
1071 const char* wbcSidTypeString(enum wbcSidType type)
1072 {
1073         switch (type) {
1074         case WBC_SID_NAME_USE_NONE: return "SID_NONE";
1075         case WBC_SID_NAME_USER:     return "SID_USER";
1076         case WBC_SID_NAME_DOM_GRP:  return "SID_DOM_GROUP";
1077         case WBC_SID_NAME_DOMAIN:   return "SID_DOMAIN";
1078         case WBC_SID_NAME_ALIAS:    return "SID_ALIAS";
1079         case WBC_SID_NAME_WKN_GRP:  return "SID_WKN_GROUP";
1080         case WBC_SID_NAME_DELETED:  return "SID_DELETED";
1081         case WBC_SID_NAME_INVALID:  return "SID_INVALID";
1082         case WBC_SID_NAME_UNKNOWN:  return "SID_UNKNOWN";
1083         case WBC_SID_NAME_COMPUTER: return "SID_COMPUTER";
1084         default:                    return "Unknown type";
1085         }
1086 }