source3/lib/winbind_util.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Winbind Utility functions
   4
   5    Copyright (C) Gerald (Jerry) Carter   2007
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 */
  20
  21 #include "includes.h"
  22 #include "../libcli/security/security.h"
  23 #include "../lib/util/util_pw.h"
  24 #include "nsswitch/libwbclient/wbclient.h"
  25
  26 #include "lib/winbind_util.h"
  27
  28 #if defined(WITH_WINBIND)
  29
  30 struct passwd * winbind_getpwnam(const char * name)
  31 {
  32         wbcErr result;
  33         struct passwd * tmp_pwd = NULL;
  34         struct passwd * pwd = NULL;
  35
  36         result = wbcGetpwnam(name, &tmp_pwd);
  37         if (result != WBC_ERR_SUCCESS)
  38                 return pwd;
  39
  40         pwd = tcopy_passwd(talloc_tos(), tmp_pwd);
  41
  42         wbcFreeMemory(tmp_pwd);
  43
  44         return pwd;
  45 }
  46
  47 struct passwd * winbind_getpwsid(const struct dom_sid *sid)
  48 {
  49         wbcErr result;
  50         struct passwd * tmp_pwd = NULL;
  51         struct passwd * pwd = NULL;
  52         struct wbcDomainSid dom_sid;
  53
  54         memcpy(&dom_sid, sid, sizeof(dom_sid));
  55
  56         result = wbcGetpwsid(&dom_sid, &tmp_pwd);
  57         if (result != WBC_ERR_SUCCESS)
  58                 return pwd;
  59
  60         pwd = tcopy_passwd(talloc_tos(), tmp_pwd);
  61
  62         wbcFreeMemory(tmp_pwd);
  63
  64         return pwd;
  65 }
  66
  67 /* Call winbindd to convert a name to a sid */
  68
  69 bool winbind_lookup_name(const char *dom_name, const char *name, struct dom_sid *sid,
  70                          enum lsa_SidType *name_type)
  71 {
  72         struct wbcDomainSid dom_sid;
  73         wbcErr result;
  74         enum wbcSidType type;
  75
  76         result = wbcLookupName(dom_name, name, &dom_sid, &type);
  77         if (result != WBC_ERR_SUCCESS)
  78                 return false;
  79
  80         memcpy(sid, &dom_sid, sizeof(struct dom_sid));
  81         *name_type = (enum lsa_SidType)type;
  82
  83         return true;
  84 }
  85
  86 /* Call winbindd to convert sid to name */
  87
  88 bool winbind_lookup_sid(TALLOC_CTX *mem_ctx, const struct dom_sid *sid,
  89                         const char **domain, const char **name,
  90                         enum lsa_SidType *name_type)
  91 {
  92         struct wbcDomainSid dom_sid;
  93         wbcErr result;
  94         enum wbcSidType type;
  95         char *domain_name = NULL;
  96         char *account_name = NULL;
  97         struct dom_sid_buf buf;
  98
  99         memcpy(&dom_sid, sid, sizeof(dom_sid));
 100
 101         result = wbcLookupSid(&dom_sid, &domain_name, &account_name, &type);
 102         if (result != WBC_ERR_SUCCESS)
 103                 return false;
 104
 105         /* Copy out result */
 106
 107         if (domain) {
 108                 *domain = talloc_strdup(mem_ctx, domain_name);
 109         }
 110         if (name) {
 111                 *name = talloc_strdup(mem_ctx, account_name);
 112         }
 113         *name_type = (enum lsa_SidType)type;
 114
 115         DEBUG(10, ("winbind_lookup_sid: SUCCESS: SID %s -> %s %s\n",
 116                    dom_sid_str_buf(sid, &buf), domain_name, account_name));
 117
 118         wbcFreeMemory(domain_name);
 119         wbcFreeMemory(account_name);
 120
 121         if ((domain && !*domain) || (name && !*name)) {
 122                 DEBUG(0,("winbind_lookup_sid: talloc() failed!\n"));
 123                 return false;
 124         }
 125
 126
 127         return true;
 128 }
 129
 130 /* Ping winbindd to see it is alive */
 131
 132 bool winbind_ping(void)
 133 {
 134         wbcErr result = wbcPing();
 135
 136         return (result == WBC_ERR_SUCCESS);
 137 }
 138
 139 /* Call winbindd to convert SID to uid */
 140
 141 bool winbind_sid_to_uid(uid_t *puid, const struct dom_sid *sid)
 142 {
 143         struct wbcDomainSid dom_sid;
 144         wbcErr result;
 145
 146         memcpy(&dom_sid, sid, sizeof(dom_sid));
 147
 148         result = wbcSidToUid(&dom_sid, puid);
 149
 150         return (result == WBC_ERR_SUCCESS);
 151 }
 152
 153 /* Call winbindd to convert SID to gid */
 154
 155 bool winbind_sid_to_gid(gid_t *pgid, const struct dom_sid *sid)
 156 {
 157         struct wbcDomainSid dom_sid;
 158         wbcErr result;
 159
 160         memcpy(&dom_sid, sid, sizeof(dom_sid));
 161
 162         result = wbcSidToGid(&dom_sid, pgid);
 163
 164         return (result == WBC_ERR_SUCCESS);
 165 }
 166
 167 bool winbind_xid_to_sid(struct dom_sid *sid, const struct unixid *xid)
 168 {
 169         struct wbcUnixId wbc_xid;
 170         struct wbcDomainSid dom_sid;
 171         wbcErr result;
 172
 173         switch (xid->type) {
 174         case ID_TYPE_UID:
 175                 wbc_xid = (struct wbcUnixId) {
 176                         .type = WBC_ID_TYPE_UID, .id.uid = xid->id
 177                 };
 178                 break;
 179         case ID_TYPE_GID:
 180                 wbc_xid = (struct wbcUnixId) {
 181                         .type = WBC_ID_TYPE_GID, .id.gid = xid->id
 182                 };
 183                 break;
 184         default:
 185                 return false;
 186         }
 187
 188         result = wbcUnixIdsToSids(&wbc_xid, 1, &dom_sid);
 189         if (result != WBC_ERR_SUCCESS) {
 190                 return false;
 191         }
 192
 193         memcpy(sid, &dom_sid, sizeof(struct dom_sid));
 194         return true;
 195 }
 196
 197 /* Check for a trusted domain */
 198
 199 wbcErr wb_is_trusted_domain(const char *domain)
 200 {
 201         wbcErr result;
 202         struct wbcDomainInfo *info = NULL;
 203
 204         result = wbcDomainInfo(domain, &info);
 205
 206         if (WBC_ERROR_IS_OK(result)) {
 207                 wbcFreeMemory(info);
 208         }
 209
 210         return result;
 211 }
 212
 213 /* Lookup a set of rids in a given domain */
 214
 215 bool winbind_lookup_rids(TALLOC_CTX *mem_ctx,
 216                          const struct dom_sid *domain_sid,
 217                          int num_rids, uint32_t *rids,
 218                          const char **domain_name,
 219                          const char ***names, enum lsa_SidType **types)
 220 {
 221         const char *dom_name = NULL;
 222         const char **namelist = NULL;
 223         enum wbcSidType *name_types = NULL;
 224         struct wbcDomainSid dom_sid;
 225         wbcErr ret;
 226         int i;
 227
 228         memcpy(&dom_sid, domain_sid, sizeof(struct wbcDomainSid));
 229
 230         ret = wbcLookupRids(&dom_sid, num_rids, rids,
 231                             &dom_name, &namelist, &name_types);
 232         if (ret != WBC_ERR_SUCCESS) {
 233                 return false;
 234         }
 235
 236         *domain_name = talloc_strdup(mem_ctx, dom_name);
 237         *names       = talloc_array(mem_ctx, const char*, num_rids);
 238         *types       = talloc_array(mem_ctx, enum lsa_SidType, num_rids);
 239
 240         for(i=0; i<num_rids; i++) {
 241                 (*names)[i] = talloc_strdup(*names, namelist[i]);
 242                 (*types)[i] = (enum lsa_SidType)name_types[i];
 243         }
 244
 245         wbcFreeMemory(discard_const_p(char, dom_name));
 246         wbcFreeMemory(namelist);
 247         wbcFreeMemory(name_types);
 248
 249         return true;
 250 }
 251
 252 /* Ask Winbind to allocate a new uid for us */
 253
 254 bool winbind_allocate_uid(uid_t *uid)
 255 {
 256         wbcErr ret;
 257
 258         ret = wbcAllocateUid(uid);
 259
 260         return (ret == WBC_ERR_SUCCESS);
 261 }
 262
 263 /* Ask Winbind to allocate a new gid for us */
 264
 265 bool winbind_allocate_gid(gid_t *gid)
 266 {
 267         wbcErr ret;
 268
 269         ret = wbcAllocateGid(gid);
 270
 271         return (ret == WBC_ERR_SUCCESS);
 272 }
 273
 274 bool winbind_lookup_usersids(TALLOC_CTX *mem_ctx,
 275                              const struct dom_sid *user_sid,
 276                              uint32_t *p_num_sids,
 277                              struct dom_sid **p_sids)
 278 {
 279         wbcErr ret;
 280         struct wbcDomainSid dom_sid;
 281         struct wbcDomainSid *sid_list = NULL;
 282         uint32_t num_sids;
 283
 284         memcpy(&dom_sid, user_sid, sizeof(dom_sid));
 285
 286         ret = wbcLookupUserSids(&dom_sid,
 287                                 false,
 288                                 &num_sids,
 289                                 &sid_list);
 290         if (ret != WBC_ERR_SUCCESS) {
 291                 return false;
 292         }
 293
 294         *p_sids = talloc_array(mem_ctx, struct dom_sid, num_sids);
 295         if (*p_sids == NULL) {
 296                 wbcFreeMemory(sid_list);
 297                 return false;
 298         }
 299
 300         memcpy(*p_sids, sid_list, sizeof(dom_sid) * num_sids);
 301
 302         *p_num_sids = num_sids;
 303         wbcFreeMemory(sid_list);
 304
 305         return true;
 306 }
 307
 308 #else      /* WITH_WINBIND */
 309
 310 struct passwd * winbind_getpwnam(const char * name)
 311 {
 312         return NULL;
 313 }
 314
 315 struct passwd * winbind_getpwsid(const struct dom_sid *sid)
 316 {
 317         return NULL;
 318 }
 319
 320 bool winbind_lookup_name(const char *dom_name, const char *name, struct dom_sid *sid,
 321                          enum lsa_SidType *name_type)
 322 {
 323         return false;
 324 }
 325
 326 /* Call winbindd to convert sid to name */
 327
 328 bool winbind_lookup_sid(TALLOC_CTX *mem_ctx, const struct dom_sid *sid,
 329                         const char **domain, const char **name,
 330                         enum lsa_SidType *name_type)
 331 {
 332         return false;
 333 }
 334
 335 /* Ping winbindd to see it is alive */
 336
 337 bool winbind_ping(void)
 338 {
 339         return false;
 340 }
 341
 342 /* Call winbindd to convert SID to uid */
 343
 344 bool winbind_sid_to_uid(uid_t *puid, const struct dom_sid *sid)
 345 {
 346         return false;
 347 }
 348
 349 /* Call winbindd to convert SID to gid */
 350
 351 bool winbind_sid_to_gid(gid_t *pgid, const struct dom_sid *sid)
 352 {
 353         return false;
 354 }
 355
 356 /* Call winbindd to convert uid or gid to SID */
 357
 358 bool winbind_xid_to_sid(struct dom_sid *sid, const struct unixid *xid)
 359 {
 360         return false;
 361 }
 362
 363 /* Check for a trusted domain */
 364
 365 wbcErr wb_is_trusted_domain(const char *domain)
 366 {
 367         return WBC_ERR_UNKNOWN_FAILURE;
 368 }
 369
 370 /* Lookup a set of rids in a given domain */
 371
 372 bool winbind_lookup_rids(TALLOC_CTX *mem_ctx,
 373                          const struct dom_sid *domain_sid,
 374                          int num_rids, uint32_t *rids,
 375                          const char **domain_name,
 376                          const char ***names, enum lsa_SidType **types)
 377 {
 378         return false;
 379 }
 380
 381 /* Ask Winbind to allocate a new uid for us */
 382
 383 bool winbind_allocate_uid(uid_t *uid)
 384 {
 385         return false;
 386 }
 387
 388 /* Ask Winbind to allocate a new gid for us */
 389
 390 bool winbind_allocate_gid(gid_t *gid)
 391 {
 392         return false;
 393 }
 394
 395 bool winbind_lookup_usersids(TALLOC_CTX *mem_ctx,
 396                              const struct dom_sid *user_sid,
 397                              uint32_t *p_num_sids,
 398                              struct dom_sid **p_sids)
 399 {
 400         return false;
 401 }
 402
 403 #endif     /* WITH_WINBIND */