source4/libcli/smb2/create.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    SMB2 client tree handling
   5
   6    Copyright (C) Andrew Tridgell 2005
   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 #include "includes.h"
  23 #include "libcli/raw/libcliraw.h"
  24 #include "libcli/raw/raw_proto.h"
  25 #include "libcli/smb2/smb2.h"
  26 #include "libcli/smb2/smb2_calls.h"
  27 #include "librpc/gen_ndr/ndr_security.h"
  28
  29 /*
  30   send a create request
  31 */
  32 struct smb2_request *smb2_create_send(struct smb2_tree *tree, struct smb2_create *io)
  33 {
  34         struct smb2_request *req;
  35         NTSTATUS status;
  36         DATA_BLOB blob;
  37         struct smb2_create_blobs blobs;
  38         int i;
  39
  40         ZERO_STRUCT(blobs);
  41
  42         req = smb2_request_init_tree(tree, SMB2_OP_CREATE, 0x38, true, 0);
  43         if (req == NULL) return NULL;
  44
  45         SCVAL(req->out.body, 0x02, io->in.security_flags);
  46         SCVAL(req->out.body, 0x03, io->in.oplock_level);
  47         SIVAL(req->out.body, 0x04, io->in.impersonation_level);
  48         SBVAL(req->out.body, 0x08, io->in.create_flags);
  49         SBVAL(req->out.body, 0x10, io->in.reserved);
  50         SIVAL(req->out.body, 0x18, io->in.desired_access);
  51         SIVAL(req->out.body, 0x1C, io->in.file_attributes);
  52         SIVAL(req->out.body, 0x20, io->in.share_access);
  53         SIVAL(req->out.body, 0x24, io->in.create_disposition);
  54         SIVAL(req->out.body, 0x28, io->in.create_options);
  55
  56         status = smb2_push_o16s16_string(&req->out, 0x2C, io->in.fname);
  57         if (!NT_STATUS_IS_OK(status)) {
  58                 talloc_free(req);
  59                 return NULL;
  60         }
  61
  62         /* now add all the optional blobs */
  63         if (io->in.eas.num_eas != 0) {
  64                 DATA_BLOB b = data_blob_talloc(req, NULL,
  65                                                ea_list_size_chained(io->in.eas.num_eas, io->in.eas.eas, 4));
  66                 ea_put_list_chained(b.data, io->in.eas.num_eas, io->in.eas.eas, 4);
  67                 status = smb2_create_blob_add(req, &blobs,
  68                                               SMB2_CREATE_TAG_EXTA, b);
  69                 if (!NT_STATUS_IS_OK(status)) {
  70                         talloc_free(req);
  71                         return NULL;
  72                 }
  73                 data_blob_free(&b);
  74         }
  75
  76         /* an empty MxAc tag seems to be used to ask the server to
  77            return the maximum access mask allowed on the file */
  78         if (io->in.query_maximal_access) {
  79                 /* TODO: MS-SMB2 2.2.13.2.5 says this can contain a timestamp? What to do
  80                    with that if it doesn't match? */
  81                 status = smb2_create_blob_add(req, &blobs,
  82                                               SMB2_CREATE_TAG_MXAC, data_blob(NULL, 0));
  83                 if (!NT_STATUS_IS_OK(status)) {
  84                         talloc_free(req);
  85                         return NULL;
  86                 }
  87         }
  88
  89         if (io->in.alloc_size != 0) {
  90                 uint8_t data[8];
  91                 SBVAL(data, 0, io->in.alloc_size);
  92                 status = smb2_create_blob_add(req, &blobs,
  93                                               SMB2_CREATE_TAG_ALSI, data_blob_const(data, 8));
  94                 if (!NT_STATUS_IS_OK(status)) {
  95                         talloc_free(req);
  96                         return NULL;
  97                 }
  98         }
  99
 100         if (io->in.durable_open) {
 101                 status = smb2_create_blob_add(req, &blobs,
 102                                               SMB2_CREATE_TAG_DHNQ, data_blob_talloc_zero(req, 16));
 103                 if (!NT_STATUS_IS_OK(status)) {
 104                         talloc_free(req);
 105                         return NULL;
 106                 }
 107         }
 108
 109         if (io->in.durable_open_v2) {
 110                 uint8_t data[32];
 111                 uint32_t flags = 0;
 112                 DATA_BLOB guid_blob;
 113
 114                 SIVAL(data, 0, io->in.timeout);
 115                 if (io->in.persistent_open) {
 116                         flags = SMB2_DHANDLE_FLAG_PERSISTENT;
 117                 }
 118                 SIVAL(data, 4, flags);
 119                 SBVAL(data, 8, 0x0); /* reserved */
 120                 status = GUID_to_ndr_blob(&io->in.create_guid, req, /* TALLOC_CTX */
 121                                           &guid_blob);
 122                 if (!NT_STATUS_IS_OK(status)) {
 123                         talloc_free(req);
 124                         return NULL;
 125                 }
 126                 memcpy(data+16, guid_blob.data, 16);
 127
 128                 status = smb2_create_blob_add(req, &blobs,
 129                                               SMB2_CREATE_TAG_DH2Q,
 130                                               data_blob_const(data, 32));
 131                 if (!NT_STATUS_IS_OK(status)) {
 132                         talloc_free(req);
 133                         return NULL;
 134                 }
 135         }
 136
 137         if (io->in.durable_handle) {
 138                 uint8_t data[16];
 139                 smb2_push_handle(data, io->in.durable_handle);
 140                 status = smb2_create_blob_add(req, &blobs,
 141                                               SMB2_CREATE_TAG_DHNC, data_blob_const(data, 16));
 142                 if (!NT_STATUS_IS_OK(status)) {
 143                         talloc_free(req);
 144                         return NULL;
 145                 }
 146         }
 147
 148         if (io->in.durable_handle_v2) {
 149                 uint8_t data[36];
 150                 DATA_BLOB guid_blob;
 151                 uint32_t flags = 0;
 152
 153                 smb2_push_handle(data, io->in.durable_handle_v2);
 154                 status = GUID_to_ndr_blob(&io->in.create_guid, req, /* TALLOC_CTX */
 155                                           &guid_blob);
 156                 if (!NT_STATUS_IS_OK(status)) {
 157                         talloc_free(req);
 158                         return NULL;
 159                 }
 160                 memcpy(data+16, guid_blob.data, 16);
 161                 if (io->in.persistent_open) {
 162                         flags = SMB2_DHANDLE_FLAG_PERSISTENT;
 163                 }
 164                 SIVAL(data, 32, flags);
 165
 166                 status = smb2_create_blob_add(req, &blobs,
 167                                               SMB2_CREATE_TAG_DH2C,
 168                                               data_blob_const(data, 36));
 169                 if (!NT_STATUS_IS_OK(status)) {
 170                         talloc_free(req);
 171                         return NULL;
 172                 }
 173         }
 174
 175         if (io->in.timewarp) {
 176                 uint8_t data[8];
 177                 SBVAL(data, 0, io->in.timewarp);
 178                 status = smb2_create_blob_add(req, &blobs,
 179                                               SMB2_CREATE_TAG_TWRP, data_blob_const(data, 8));
 180                 if (!NT_STATUS_IS_OK(status)) {
 181                         talloc_free(req);
 182                         return NULL;
 183                 }
 184         }
 185
 186         if (io->in.sec_desc) {
 187                 enum ndr_err_code ndr_err;
 188                 DATA_BLOB sd_blob;
 189                 ndr_err = ndr_push_struct_blob(&sd_blob, req, io->in.sec_desc,
 190                                                (ndr_push_flags_fn_t)ndr_push_security_descriptor);
 191                 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 192                         talloc_free(req);
 193                         return NULL;
 194                 }
 195                 status = smb2_create_blob_add(req, &blobs,
 196                                               SMB2_CREATE_TAG_SECD, sd_blob);
 197                 if (!NT_STATUS_IS_OK(status)) {
 198                         talloc_free(req);
 199                         return NULL;
 200                 }
 201         }
 202
 203         if (io->in.query_on_disk_id) {
 204                 status = smb2_create_blob_add(req, &blobs,
 205                                               SMB2_CREATE_TAG_QFID, data_blob(NULL, 0));
 206                 if (!NT_STATUS_IS_OK(status)) {
 207                         talloc_free(req);
 208                         return NULL;
 209                 }
 210         }
 211
 212         if (io->in.lease_request) {
 213                 uint8_t data[32];
 214
 215                 if (!smb2_lease_push(io->in.lease_request, data,
 216                                      sizeof(data))) {
 217                         TALLOC_FREE(req);
 218                         return NULL;
 219                 }
 220
 221                 status = smb2_create_blob_add(
 222                         req, &blobs, SMB2_CREATE_TAG_RQLS,
 223                         data_blob_const(data, sizeof(data)));
 224                 if (!NT_STATUS_IS_OK(status)) {
 225                         talloc_free(req);
 226                         return NULL;
 227                 }
 228         }
 229
 230         if (io->in.lease_request_v2) {
 231                 uint8_t data[52];
 232
 233                 if (!smb2_lease_push(io->in.lease_request_v2, data,
 234                                      sizeof(data))) {
 235                         TALLOC_FREE(req);
 236                         return NULL;
 237                 }
 238
 239                 status = smb2_create_blob_add(
 240                         req, &blobs, SMB2_CREATE_TAG_RQLS,
 241                         data_blob_const(data, sizeof(data)));
 242                 if (!NT_STATUS_IS_OK(status)) {
 243                         talloc_free(req);
 244                         return NULL;
 245                 }
 246         }
 247
 248         if (io->in.app_instance_id) {
 249                 uint8_t data[20];
 250                 DATA_BLOB guid_blob;
 251
 252                 SSVAL(data, 0, 20); /* structure size */
 253                 SSVAL(data, 2, 0);  /* reserved */
 254
 255                 status = GUID_to_ndr_blob(io->in.app_instance_id,
 256                                           req, /* TALLOC_CTX */
 257                                           &guid_blob);
 258                 if (!NT_STATUS_IS_OK(status)) {
 259                         talloc_free(req);
 260                         return NULL;
 261                 }
 262                 memcpy(data+4, guid_blob.data, 16);
 263
 264                 status = smb2_create_blob_add(req, &blobs,
 265                                               SMB2_CREATE_TAG_APP_INSTANCE_ID,
 266                                               data_blob_const(data, 20));
 267                 if (!NT_STATUS_IS_OK(status)) {
 268                         talloc_free(req);
 269                         return NULL;
 270                 }
 271         }
 272
 273         /* and any custom blobs */
 274         for (i=0;i<io->in.blobs.num_blobs;i++) {
 275                 status = smb2_create_blob_add(req, &blobs,
 276                                               io->in.blobs.blobs[i].tag,
 277                                               io->in.blobs.blobs[i].data);
 278                 if (!NT_STATUS_IS_OK(status)) {
 279                         talloc_free(req);
 280                         return NULL;
 281                 }
 282         }
 283
 284
 285         status = smb2_create_blob_push(req, &blob, blobs);
 286         if (!NT_STATUS_IS_OK(status)) {
 287                 talloc_free(req);
 288                 return NULL;
 289         }
 290
 291         status = smb2_push_o32s32_blob(&req->out, 0x30, blob);
 292         if (!NT_STATUS_IS_OK(status)) {
 293                 talloc_free(req);
 294                 return NULL;
 295         }
 296
 297         data_blob_free(&blob);
 298
 299         smb2_transport_send(req);
 300
 301         return req;
 302 }
 303
 304
 305 /*
 306   recv a create reply
 307 */
 308 NTSTATUS smb2_create_recv(struct smb2_request *req, TALLOC_CTX *mem_ctx, struct smb2_create *io)
 309 {
 310         NTSTATUS status;
 311         DATA_BLOB blob;
 312         int i;
 313
 314         if (!smb2_request_receive(req) ||
 315             !smb2_request_is_ok(req)) {
 316                 return smb2_request_destroy(req);
 317         }
 318
 319         SMB2_CHECK_PACKET_RECV(req, 0x58, true);
 320         ZERO_STRUCT(io->out);
 321         io->out.oplock_level   = CVAL(req->in.body, 0x02);
 322         io->out.reserved       = CVAL(req->in.body, 0x03);
 323         io->out.create_action  = IVAL(req->in.body, 0x04);
 324         io->out.create_time    = smbcli_pull_nttime(req->in.body, 0x08);
 325         io->out.access_time    = smbcli_pull_nttime(req->in.body, 0x10);
 326         io->out.write_time     = smbcli_pull_nttime(req->in.body, 0x18);
 327         io->out.change_time    = smbcli_pull_nttime(req->in.body, 0x20);
 328         io->out.alloc_size     = BVAL(req->in.body, 0x28);
 329         io->out.size           = BVAL(req->in.body, 0x30);
 330         io->out.file_attr      = IVAL(req->in.body, 0x38);
 331         io->out.reserved2      = IVAL(req->in.body, 0x3C);
 332         smb2_pull_handle(req->in.body+0x40, &io->out.file.handle);
 333         status = smb2_pull_o32s32_blob(&req->in, mem_ctx, req->in.body+0x50, &blob);
 334         if (!NT_STATUS_IS_OK(status)) {
 335                 smb2_request_destroy(req);
 336                 return status;
 337         }
 338
 339         status = smb2_create_blob_parse(mem_ctx, blob, &io->out.blobs);
 340         if (!NT_STATUS_IS_OK(status)) {
 341                 smb2_request_destroy(req);
 342                 return status;
 343         }
 344
 345         /* pull out the parsed blobs */
 346         for (i=0;i<io->out.blobs.num_blobs;i++) {
 347                 if (strcmp(io->out.blobs.blobs[i].tag, SMB2_CREATE_TAG_MXAC) == 0) {
 348                         /* TODO: this also contains a status field in
 349                            first 4 bytes */
 350                         if (io->out.blobs.blobs[i].data.length != 8) {
 351                                 smb2_request_destroy(req);
 352                                 return NT_STATUS_INVALID_NETWORK_RESPONSE;
 353                         }
 354                         io->out.maximal_access = IVAL(io->out.blobs.blobs[i].data.data, 4);
 355                 }
 356                 if (strcmp(io->out.blobs.blobs[i].tag, SMB2_CREATE_TAG_QFID) == 0) {
 357                         if (io->out.blobs.blobs[i].data.length != 32) {
 358                                 smb2_request_destroy(req);
 359                                 return NT_STATUS_INVALID_NETWORK_RESPONSE;
 360                         }
 361                         memcpy(io->out.on_disk_id, io->out.blobs.blobs[i].data.data, 32);
 362                 }
 363                 if (strcmp(io->out.blobs.blobs[i].tag, SMB2_CREATE_TAG_RQLS) == 0) {
 364                         struct smb2_lease *ls = NULL;
 365                         uint8_t *data;
 366
 367                         ZERO_STRUCT(io->out.lease_response);
 368                         ZERO_STRUCT(io->out.lease_response_v2);
 369
 370                         switch (io->out.blobs.blobs[i].data.length) {
 371                         case 32:
 372                                 ls = &io->out.lease_response;
 373                                 break;
 374                         case 52:
 375                                 ls = &io->out.lease_response_v2;
 376                                 break;
 377                         default:
 378                                 smb2_request_destroy(req);
 379                                 return NT_STATUS_INVALID_NETWORK_RESPONSE;
 380                         }
 381
 382                         data = io->out.blobs.blobs[i].data.data;
 383                         memcpy(&ls->lease_key, data, 16);
 384                         ls->lease_state = IVAL(data, 16);
 385                         ls->lease_flags = IVAL(data, 20);
 386                         ls->lease_duration = BVAL(data, 24);
 387
 388                         if (io->out.blobs.blobs[i].data.length == 52) {
 389                                 memcpy(&ls->parent_lease_key, data+32, 16);
 390                                 ls->lease_epoch = SVAL(data, 48);
 391                         }
 392                 }
 393                 if (strcmp(io->out.blobs.blobs[i].tag, SMB2_CREATE_TAG_DHNQ) == 0) {
 394                         if (io->out.blobs.blobs[i].data.length != 8) {
 395                                 smb2_request_destroy(req);
 396                                 return NT_STATUS_INVALID_NETWORK_RESPONSE;
 397                         }
 398                         io->out.durable_open = true;
 399                 }
 400                 if (strcmp(io->out.blobs.blobs[i].tag, SMB2_CREATE_TAG_DH2Q) == 0) {
 401                         uint32_t flags;
 402                         uint8_t *data;
 403
 404                         if (io->out.blobs.blobs[i].data.length != 8) {
 405                                 smb2_request_destroy(req);
 406                                 return NT_STATUS_INVALID_NETWORK_RESPONSE;
 407                         }
 408
 409                         io->out.durable_open = false;
 410                         io->out.durable_open_v2 = true;
 411
 412                         data = io->out.blobs.blobs[i].data.data;
 413                         io->out.timeout = IVAL(data, 0);
 414                         flags = IVAL(data, 4);
 415                         if ((flags & SMB2_DHANDLE_FLAG_PERSISTENT) != 0) {
 416                                 io->out.persistent_open = true;
 417                         }
 418                 }
 419         }
 420
 421         data_blob_free(&blob);
 422
 423         return smb2_request_destroy(req);
 424 }
 425
 426 /*
 427   sync create request
 428 */
 429 NTSTATUS smb2_create(struct smb2_tree *tree, TALLOC_CTX *mem_ctx, struct smb2_create *io)
 430 {
 431         struct smb2_request *req = smb2_create_send(tree, io);
 432         return smb2_create_recv(req, mem_ctx, io);
 433 }