source4/libcli/util/clilsa.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    lsa calls for file sharing connections
   5
   6    Copyright (C) Andrew Tridgell 2004
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 */
  21
  22 /*
  23   when dealing with ACLs the file sharing client code needs to
  24   sometimes make LSA RPC calls. This code provides an easy interface
  25   for doing those calls.
  26 */
  27
  28 #include "includes.h"
  29 #include "libcli/raw/libcliraw.h"
  30 #include "libcli/libcli.h"
  31 #include "libcli/security/security.h"
  32 #include "librpc/gen_ndr/ndr_lsa.h"
  33 #include "librpc/gen_ndr/ndr_lsa_c.h"
  34 #include "libcli/util/clilsa.h"
  35
  36 struct smblsa_state {
  37         struct dcerpc_pipe *pipe;
  38         struct smbcli_tree *ipc_tree;
  39         struct policy_handle handle;
  40 };
  41
  42 /*
  43   establish the lsa pipe connection
  44 */
  45 static NTSTATUS smblsa_connect(struct smbcli_state *cli)
  46 {
  47         struct smblsa_state *lsa;
  48         NTSTATUS status;
  49         struct lsa_OpenPolicy r;
  50         uint16_t system_name = '\\';
  51         union smb_tcon tcon;
  52         struct lsa_ObjectAttribute attr;
  53         struct lsa_QosInfo qos;
  54
  55         if (cli->lsa != NULL) {
  56                 return NT_STATUS_OK;
  57         }
  58
  59         lsa = talloc(cli, struct smblsa_state);
  60         if (lsa == NULL) {
  61                 return NT_STATUS_NO_MEMORY;
  62         }
  63
  64         lsa->ipc_tree = smbcli_tree_init(cli->session, lsa, false);
  65         if (lsa->ipc_tree == NULL) {
  66                 return NT_STATUS_NO_MEMORY;
  67         }
  68
  69         /* connect to IPC$ */
  70         tcon.generic.level = RAW_TCON_TCONX;
  71         tcon.tconx.in.flags = TCONX_FLAG_EXTENDED_RESPONSE;
  72         tcon.tconx.in.password = data_blob(NULL, 0);
  73         tcon.tconx.in.path = "ipc$";
  74         tcon.tconx.in.device = "IPC";
  75         status = smb_raw_tcon(lsa->ipc_tree, lsa, &tcon);
  76         if (!NT_STATUS_IS_OK(status)) {
  77                 talloc_free(lsa);
  78                 return status;
  79         }
  80         lsa->ipc_tree->tid = tcon.tconx.out.tid;
  81
  82         lsa->pipe = dcerpc_pipe_init(lsa, cli->transport->ev);
  83         if (lsa->pipe == NULL) {
  84                 talloc_free(lsa);
  85                 return NT_STATUS_NO_MEMORY;
  86         }
  87
  88         /* open the LSA pipe */
  89         status = dcerpc_pipe_open_smb(lsa->pipe, lsa->ipc_tree, NDR_LSARPC_NAME);
  90         if (!NT_STATUS_IS_OK(status)) {
  91                 talloc_free(lsa);
  92                 return status;
  93         }
  94
  95         /* bind to the LSA pipe */
  96         status = dcerpc_bind_auth_none(lsa->pipe, &ndr_table_lsarpc);
  97         if (!NT_STATUS_IS_OK(status)) {
  98                 talloc_free(lsa);
  99                 return status;
 100         }
 101
 102
 103         /* open a lsa policy handle */
 104         qos.len = 0;
 105         qos.impersonation_level = 2;
 106         qos.context_mode = 1;
 107         qos.effective_only = 0;
 108
 109         attr.len = 0;
 110         attr.root_dir = NULL;
 111         attr.object_name = NULL;
 112         attr.attributes = 0;
 113         attr.sec_desc = NULL;
 114         attr.sec_qos = &qos;
 115
 116         r.in.system_name = &system_name;
 117         r.in.attr = &attr;
 118         r.in.access_mask = SEC_FLAG_MAXIMUM_ALLOWED;
 119         r.out.handle = &lsa->handle;
 120
 121         status = dcerpc_lsa_OpenPolicy_r(lsa->pipe->binding_handle, lsa, &r);
 122         if (!NT_STATUS_IS_OK(status)) {
 123                 talloc_free(lsa);
 124                 return status;
 125         }
 126
 127         if (!NT_STATUS_IS_OK(r.out.result)) {
 128                 talloc_free(lsa);
 129                 return r.out.result;
 130         }
 131
 132         cli->lsa = lsa;
 133
 134         return NT_STATUS_OK;
 135 }
 136
 137
 138 /*
 139   return the set of privileges for the given sid
 140 */
 141 NTSTATUS smblsa_sid_privileges(struct smbcli_state *cli, struct dom_sid *sid,
 142                                TALLOC_CTX *mem_ctx,
 143                                struct lsa_RightSet *rights)
 144 {
 145         NTSTATUS status;
 146         struct lsa_EnumAccountRights r;
 147
 148         status = smblsa_connect(cli);
 149         if (!NT_STATUS_IS_OK(status)) {
 150                 return status;
 151         }
 152
 153         r.in.handle = &cli->lsa->handle;
 154         r.in.sid = sid;
 155         r.out.rights = rights;
 156
 157         status = dcerpc_lsa_EnumAccountRights_r(cli->lsa->pipe->binding_handle, mem_ctx, &r);
 158         if (!NT_STATUS_IS_OK(status)) {
 159                 return status;
 160         }
 161
 162         return r.out.result;
 163 }
 164
 165
 166 /*
 167   check if a named sid has a particular named privilege
 168 */
 169 NTSTATUS smblsa_sid_check_privilege(struct smbcli_state *cli,
 170                                     const char *sid_str,
 171                                     const char *privilege)
 172 {
 173         struct lsa_RightSet rights;
 174         NTSTATUS status;
 175         TALLOC_CTX *mem_ctx = talloc_new(cli);
 176         struct dom_sid *sid;
 177         unsigned i;
 178
 179         sid = dom_sid_parse_talloc(mem_ctx, sid_str);
 180         if (sid == NULL) {
 181                 talloc_free(mem_ctx);
 182                 return NT_STATUS_INVALID_SID;
 183         }
 184
 185         status = smblsa_sid_privileges(cli, sid, mem_ctx, &rights);
 186         if (!NT_STATUS_IS_OK(status)) {
 187                 talloc_free(mem_ctx);
 188                 return status;
 189         }
 190
 191         for (i=0;i<rights.count;i++) {
 192                 if (strcmp(rights.names[i].string, privilege) == 0) {
 193                         talloc_free(mem_ctx);
 194                         return NT_STATUS_OK;
 195                 }
 196         }
 197
 198         talloc_free(mem_ctx);
 199         return NT_STATUS_NOT_FOUND;
 200 }
 201
 202
 203 /*
 204   lookup a SID, returning its name
 205 */
 206 NTSTATUS smblsa_lookup_sid(struct smbcli_state *cli,
 207                            const char *sid_str,
 208                            TALLOC_CTX *mem_ctx,
 209                            const char **name)
 210 {
 211         struct lsa_LookupSids r;
 212         struct lsa_TransNameArray names;
 213         struct lsa_SidArray sids;
 214         struct lsa_RefDomainList *domains = NULL;
 215         uint32_t count = 1;
 216         NTSTATUS status;
 217         struct dom_sid *sid;
 218         TALLOC_CTX *mem_ctx2 = talloc_new(mem_ctx);
 219
 220         status = smblsa_connect(cli);
 221         if (!NT_STATUS_IS_OK(status)) {
 222                 return status;
 223         }
 224
 225         sid = dom_sid_parse_talloc(mem_ctx2, sid_str);
 226         if (sid == NULL) {
 227                 return NT_STATUS_INVALID_SID;
 228         }
 229
 230         names.count = 0;
 231         names.names = NULL;
 232
 233         sids.num_sids = 1;
 234         sids.sids = talloc(mem_ctx2, struct lsa_SidPtr);
 235         sids.sids[0].sid = sid;
 236
 237         r.in.handle = &cli->lsa->handle;
 238         r.in.sids = &sids;
 239         r.in.names = &names;
 240         r.in.level = 1;
 241         r.in.count = &count;
 242         r.out.count = &count;
 243         r.out.names = &names;
 244         r.out.domains = &domains;
 245
 246         status = dcerpc_lsa_LookupSids_r(cli->lsa->pipe->binding_handle, mem_ctx2, &r);
 247         if (!NT_STATUS_IS_OK(status)) {
 248                 talloc_free(mem_ctx2);
 249                 return status;
 250         }
 251         if (!NT_STATUS_IS_OK(r.out.result)) {
 252                 talloc_free(mem_ctx2);
 253                 return r.out.result;
 254         }
 255         if (names.count != 1) {
 256                 talloc_free(mem_ctx2);
 257                 return NT_STATUS_UNSUCCESSFUL;
 258         }
 259
 260         (*name) = talloc_asprintf(mem_ctx, "%s\\%s",
 261                                   domains->domains[0].name.string,
 262                                   names.names[0].name.string);
 263
 264         talloc_free(mem_ctx2);
 265
 266         return NT_STATUS_OK;
 267 }
 268
 269 /*
 270   lookup a name, returning its sid
 271 */
 272 NTSTATUS smblsa_lookup_name(struct smbcli_state *cli,
 273                             const char *name,
 274                             TALLOC_CTX *mem_ctx,
 275                             const char **sid_str)
 276 {
 277         struct lsa_LookupNames r;
 278         struct lsa_TransSidArray sids;
 279         struct lsa_String names;
 280         struct lsa_RefDomainList *domains = NULL;
 281         uint32_t count = 1;
 282         NTSTATUS status;
 283         struct dom_sid *sid;
 284         TALLOC_CTX *mem_ctx2 = talloc_new(mem_ctx);
 285         uint32_t rid;
 286
 287         status = smblsa_connect(cli);
 288         if (!NT_STATUS_IS_OK(status)) {
 289                 return status;
 290         }
 291
 292         sids.count = 0;
 293         sids.sids = NULL;
 294
 295         names.string = name;
 296
 297         r.in.handle = &cli->lsa->handle;
 298         r.in.num_names = 1;
 299         r.in.names = &names;
 300         r.in.sids = &sids;
 301         r.in.level = 1;
 302         r.in.count = &count;
 303         r.out.count = &count;
 304         r.out.sids = &sids;
 305         r.out.domains = &domains;
 306
 307         status = dcerpc_lsa_LookupNames_r(cli->lsa->pipe->binding_handle, mem_ctx2, &r);
 308         if (!NT_STATUS_IS_OK(status)) {
 309                 talloc_free(mem_ctx2);
 310                 return status;
 311         }
 312         if (!NT_STATUS_IS_OK(r.out.result)) {
 313                 talloc_free(mem_ctx2);
 314                 return r.out.result;
 315         }
 316         if (sids.count != 1) {
 317                 talloc_free(mem_ctx2);
 318                 return NT_STATUS_UNSUCCESSFUL;
 319         }
 320
 321         sid = domains->domains[0].sid;
 322         rid = sids.sids[0].rid;
 323
 324         (*sid_str) = talloc_asprintf(mem_ctx, "%s-%u",
 325                                      dom_sid_string(mem_ctx2, sid), rid);
 326
 327         talloc_free(mem_ctx2);
 328
 329         return NT_STATUS_OK;
 330 }
 331
 332
 333 /*
 334   add a set of privileges to the given sid
 335 */
 336 NTSTATUS smblsa_sid_add_privileges(struct smbcli_state *cli, struct dom_sid *sid,
 337                                    TALLOC_CTX *mem_ctx,
 338                                    struct lsa_RightSet *rights)
 339 {
 340         NTSTATUS status;
 341         struct lsa_AddAccountRights r;
 342
 343         status = smblsa_connect(cli);
 344         if (!NT_STATUS_IS_OK(status)) {
 345                 return status;
 346         }
 347
 348         r.in.handle = &cli->lsa->handle;
 349         r.in.sid = sid;
 350         r.in.rights = rights;
 351
 352         status = dcerpc_lsa_AddAccountRights_r(cli->lsa->pipe->binding_handle, mem_ctx, &r);
 353         if (!NT_STATUS_IS_OK(status)) {
 354                 return status;
 355         }
 356
 357         return r.out.result;
 358 }
 359
 360 /*
 361   remove a set of privileges from the given sid
 362 */
 363 NTSTATUS smblsa_sid_del_privileges(struct smbcli_state *cli, struct dom_sid *sid,
 364                                    TALLOC_CTX *mem_ctx,
 365                                    struct lsa_RightSet *rights)
 366 {
 367         NTSTATUS status;
 368         struct lsa_RemoveAccountRights r;
 369
 370         status = smblsa_connect(cli);
 371         if (!NT_STATUS_IS_OK(status)) {
 372                 return status;
 373         }
 374
 375         r.in.handle = &cli->lsa->handle;
 376         r.in.sid = sid;
 377         r.in.remove_all = 0;
 378         r.in.rights = rights;
 379
 380         status = dcerpc_lsa_RemoveAccountRights_r(cli->lsa->pipe->binding_handle, mem_ctx, &r);
 381         if (!NT_STATUS_IS_OK(status)) {
 382                 return status;
 383         }
 384
 385         return r.out.result;
 386 }