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                 memcpy(&data[0], &io->in.lease_request->lease_key, 16);
 216                 SIVAL(data, 16, io->in.lease_request->lease_state);
 217                 SIVAL(data, 20, io->in.lease_request->lease_flags);
 218                 SBVAL(data, 24, io->in.lease_request->lease_duration);
 219
 220                 status = smb2_create_blob_add(req, &blobs,
 221                                               SMB2_CREATE_TAG_RQLS,
 222                                               data_blob_const(data, 32));
 223                 if (!NT_STATUS_IS_OK(status)) {
 224                         talloc_free(req);
 225                         return NULL;
 226                 }
 227         }
 228
 229         if (io->in.lease_request_v2) {
 230                 struct smb2_lease *ls = &io->in.lease_request_v2;
 231                 uint8_t data[52];
 232
 233                 memcpy(&data[0], &ls->lease_key, 16);
 234                 SIVAL(data, 16, ls->lease_state);
 235                 SIVAL(data, 20, ls->lease_flags);
 236                 SBVAL(data, 24, ls->lease_duration);
 237                 memcpy(&data[32], &ls->parent_lease_key, 16);
 238                 SSVAL(data, 48, ls->lease_epoch);
 239                 SSVAL(data, 50, 0); /* reserved */
 240
 241                 status = smb2_create_blob_add(req, &blobs,
 242                                               SMB2_CREATE_TAG_RQLS,
 243                                               data_blob_const(data, 52));
 244                 if (!NT_STATUS_IS_OK(status)) {
 245                         talloc_free(req);
 246                         return NULL;
 247                 }
 248         }
 249
 250         if (io->in.app_instance_id) {
 251                 uint8_t data[20];
 252                 DATA_BLOB guid_blob;
 253
 254                 SSVAL(data, 0, 20); /* structure size */
 255                 SSVAL(data, 2, 0);  /* reserved */
 256
 257                 status = GUID_to_ndr_blob(io->in.app_instance_id,
 258                                           req, /* TALLOC_CTX */
 259                                           &guid_blob);
 260                 if (!NT_STATUS_IS_OK(status)) {
 261                         talloc_free(req);
 262                         return NULL;
 263                 }
 264                 memcpy(data+4, guid_blob.data, 16);
 265
 266                 status = smb2_create_blob_add(req, &blobs,
 267                                               SMB2_CREATE_TAG_APP_INSTANCE_ID,
 268                                               data_blob_const(data, 20));
 269                 if (!NT_STATUS_IS_OK(status)) {
 270                         talloc_free(req);
 271                         return NULL;
 272                 }
 273         }
 274
 275         /* and any custom blobs */
 276         for (i=0;i<io->in.blobs.num_blobs;i++) {
 277                 status = smb2_create_blob_add(req, &blobs,
 278                                               io->in.blobs.blobs[i].tag,
 279                                               io->in.blobs.blobs[i].data);
 280                 if (!NT_STATUS_IS_OK(status)) {
 281                         talloc_free(req);
 282                         return NULL;
 283                 }
 284         }
 285
 286
 287         status = smb2_create_blob_push(req, &blob, blobs);
 288         if (!NT_STATUS_IS_OK(status)) {
 289                 talloc_free(req);
 290                 return NULL;
 291         }
 292
 293         status = smb2_push_o32s32_blob(&req->out, 0x30, blob);
 294         if (!NT_STATUS_IS_OK(status)) {
 295                 talloc_free(req);
 296                 return NULL;
 297         }
 298
 299         data_blob_free(&blob);
 300
 301         smb2_transport_send(req);
 302
 303         return req;
 304 }
 305
 306
 307 /*
 308   recv a create reply
 309 */
 310 NTSTATUS smb2_create_recv(struct smb2_request *req, TALLOC_CTX *mem_ctx, struct smb2_create *io)
 311 {
 312         NTSTATUS status;
 313         DATA_BLOB blob;
 314         int i;
 315
 316         if (!smb2_request_receive(req) ||
 317             !smb2_request_is_ok(req)) {
 318                 return smb2_request_destroy(req);
 319         }
 320
 321         SMB2_CHECK_PACKET_RECV(req, 0x58, true);
 322         ZERO_STRUCT(io->out);
 323         io->out.oplock_level   = CVAL(req->in.body, 0x02);
 324         io->out.reserved       = CVAL(req->in.body, 0x03);
 325         io->out.create_action  = IVAL(req->in.body, 0x04);
 326         io->out.create_time    = smbcli_pull_nttime(req->in.body, 0x08);
 327         io->out.access_time    = smbcli_pull_nttime(req->in.body, 0x10);
 328         io->out.write_time     = smbcli_pull_nttime(req->in.body, 0x18);
 329         io->out.change_time    = smbcli_pull_nttime(req->in.body, 0x20);
 330         io->out.alloc_size     = BVAL(req->in.body, 0x28);
 331         io->out.size           = BVAL(req->in.body, 0x30);
 332         io->out.file_attr      = IVAL(req->in.body, 0x38);
 333         io->out.reserved2      = IVAL(req->in.body, 0x3C);
 334         smb2_pull_handle(req->in.body+0x40, &io->out.file.handle);
 335         status = smb2_pull_o32s32_blob(&req->in, mem_ctx, req->in.body+0x50, &blob);
 336         if (!NT_STATUS_IS_OK(status)) {
 337                 smb2_request_destroy(req);
 338                 return status;
 339         }
 340
 341         status = smb2_create_blob_parse(mem_ctx, blob, &io->out.blobs);
 342         if (!NT_STATUS_IS_OK(status)) {
 343                 smb2_request_destroy(req);
 344                 return status;
 345         }
 346
 347         /* pull out the parsed blobs */
 348         for (i=0;i<io->out.blobs.num_blobs;i++) {
 349                 if (strcmp(io->out.blobs.blobs[i].tag, SMB2_CREATE_TAG_MXAC) == 0) {
 350                         /* TODO: this also contains a status field in
 351                            first 4 bytes */
 352                         if (io->out.blobs.blobs[i].data.length != 8) {
 353                                 smb2_request_destroy(req);
 354                                 return NT_STATUS_INVALID_NETWORK_RESPONSE;
 355                         }
 356                         io->out.maximal_access = IVAL(io->out.blobs.blobs[i].data.data, 4);
 357                 }
 358                 if (strcmp(io->out.blobs.blobs[i].tag, SMB2_CREATE_TAG_QFID) == 0) {
 359                         if (io->out.blobs.blobs[i].data.length != 32) {
 360                                 smb2_request_destroy(req);
 361                                 return NT_STATUS_INVALID_NETWORK_RESPONSE;
 362                         }
 363                         memcpy(io->out.on_disk_id, io->out.blobs.blobs[i].data.data, 32);
 364                 }
 365                 if (strcmp(io->out.blobs.blobs[i].tag, SMB2_CREATE_TAG_RQLS) == 0) {
 366                         struct smb2_lease *ls = NULL;
 367                         uint8_t *data;
 368
 369                         ZERO_STRUCT(io->out.lease_response);
 370                         ZERO_STRUCT(io->out.lease_response_v2);
 371
 372                         switch (io->out.blobs.blobs[i].data.length) {
 373                         case 32:
 374                                 ls = &io->out.lease_response;
 375                                 break;
 376                         case 52:
 377                                 ls = &io->out.lease_response_v2;
 378                                 break;
 379                         default:
 380                                 smb2_request_destroy(req);
 381                                 return NT_STATUS_INVALID_NETWORK_RESPONSE;
 382                         }
 383
 384                         data = io->out.blobs.blobs[i].data.data;
 385                         memcpy(&ls->lease_key, data, 16);
 386                         ls->lease_state = IVAL(data, 16);
 387                         ls->lease_flags = IVAL(data, 20);
 388                         ls->lease_duration = BVAL(data, 24);
 389
 390                         if (io->out.blobs.blobs[i].data.length == 52) {
 391                                 memcpy(&ls->parent_lease_key, data+32, 16);
 392                                 ls->lease_epoch = SVAL(data, 48);
 393                         }
 394                 }
 395                 if (strcmp(io->out.blobs.blobs[i].tag, SMB2_CREATE_TAG_DHNQ) == 0) {
 396                         if (io->out.blobs.blobs[i].data.length != 8) {
 397                                 smb2_request_destroy(req);
 398                                 return NT_STATUS_INVALID_NETWORK_RESPONSE;
 399                         }
 400                         io->out.durable_open = true;
 401                 }
 402                 if (strcmp(io->out.blobs.blobs[i].tag, SMB2_CREATE_TAG_DH2Q) == 0) {
 403                         uint32_t flags;
 404                         uint8_t *data;
 405
 406                         if (io->out.blobs.blobs[i].data.length != 8) {
 407                                 smb2_request_destroy(req);
 408                                 return NT_STATUS_INVALID_NETWORK_RESPONSE;
 409                         }
 410
 411                         io->out.durable_open = false;
 412                         io->out.durable_open_v2 = true;
 413
 414                         data = io->out.blobs.blobs[i].data.data;
 415                         io->out.timeout = IVAL(data, 0);
 416                         flags = IVAL(data, 4);
 417                         if ((flags & SMB2_DHANDLE_FLAG_PERSISTENT) != 0) {
 418                                 io->out.persistent_open = true;
 419                         }
 420                 }
 421         }
 422
 423         data_blob_free(&blob);
 424
 425         return smb2_request_destroy(req);
 426 }
 427
 428 /*
 429   sync create request
 430 */
 431 NTSTATUS smb2_create(struct smb2_tree *tree, TALLOC_CTX *mem_ctx, struct smb2_create *io)
 432 {
 433         struct smb2_request *req = smb2_create_send(tree, io);
 434         return smb2_create_recv(req, mem_ctx, io);
 435 }