source3/libsmb/smb2cli_create.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    smb2 lib
   4    Copyright (C) Volker Lendecke 2011
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20 #include "includes.h"
  21 #include "client.h"
  22 #include "async_smb.h"
  23 #include "../libcli/smb/smbXcli_base.h"
  24 #include "smb2cli.h"
  25 #include "libsmb/proto.h"
  26 #include "lib/util/tevent_ntstatus.h"
  27 #include "libcli/smb/smb2_create_blob.h"
  28
  29 struct smb2cli_create_state {
  30         uint8_t fixed[56];
  31
  32         uint8_t oplock_level;
  33         uint32_t create_action;
  34         struct timespec creation_time;
  35         struct timespec last_access_time;
  36         struct timespec last_write_time;
  37         struct timespec change_time;
  38         uint64_t allocation_size;
  39         uint64_t end_of_file;
  40         uint32_t file_attributes;
  41         uint64_t fid_persistent;
  42         uint64_t fid_volatile;
  43         struct smb2_create_blobs blobs;
  44 };
  45
  46 static void smb2cli_create_done(struct tevent_req *subreq);
  47
  48 struct tevent_req *smb2cli_create_send(
  49         TALLOC_CTX *mem_ctx,
  50         struct tevent_context *ev,
  51         struct smbXcli_conn *conn,
  52         uint32_t timeout_msec,
  53         struct smbXcli_session *session,
  54         uint32_t tcon_id,
  55         const char *filename,
  56         uint8_t  oplock_level,          /* SMB2_OPLOCK_LEVEL_* */
  57         uint32_t impersonation_level,   /* SMB2_IMPERSONATION_* */
  58         uint32_t desired_access,
  59         uint32_t file_attributes,
  60         uint32_t share_access,
  61         uint32_t create_disposition,
  62         uint32_t create_options,
  63         struct smb2_create_blobs *blobs)
  64 {
  65         struct tevent_req *req, *subreq;
  66         struct smb2cli_create_state *state;
  67         uint8_t *fixed;
  68         uint8_t *name_utf16;
  69         size_t name_utf16_len;
  70         DATA_BLOB blob;
  71         NTSTATUS status;
  72         size_t blobs_offset;
  73         uint8_t *dyn;
  74         size_t dyn_len;
  75
  76         req = tevent_req_create(mem_ctx, &state,
  77                                 struct smb2cli_create_state);
  78         if (req == NULL) {
  79                 return NULL;
  80         }
  81
  82         if (!convert_string_talloc(state, CH_UNIX, CH_UTF16,
  83                                    filename, strlen(filename),
  84                                    &name_utf16, &name_utf16_len)) {
  85                 tevent_req_oom(req);
  86                 return tevent_req_post(req, ev);
  87         }
  88
  89         if (strlen(filename) == 0) {
  90                 TALLOC_FREE(name_utf16);
  91                 name_utf16_len = 0;
  92         }
  93
  94         fixed = state->fixed;
  95
  96         SSVAL(fixed, 0, 57);
  97         SCVAL(fixed, 3, oplock_level);
  98         SIVAL(fixed, 4, impersonation_level);
  99         SIVAL(fixed, 24, desired_access);
 100         SIVAL(fixed, 28, file_attributes);
 101         SIVAL(fixed, 32, share_access);
 102         SIVAL(fixed, 36, create_disposition);
 103         SIVAL(fixed, 40, create_options);
 104
 105         SSVAL(fixed, 44, SMB2_HDR_BODY + 56);
 106         SSVAL(fixed, 46, name_utf16_len);
 107
 108         blob = data_blob_null;
 109
 110         if (blobs != NULL) {
 111                 status = smb2_create_blob_push(state, &blob, *blobs);
 112                 if (tevent_req_nterror(req, status)) {
 113                         return tevent_req_post(req, ev);
 114                 }
 115         }
 116
 117         blobs_offset = name_utf16_len;
 118         blobs_offset = ((blobs_offset + 3) & ~3);
 119
 120         if (blob.length > 0) {
 121                 SIVAL(fixed, 48, blobs_offset + SMB2_HDR_BODY + 56);
 122                 SIVAL(fixed, 52, blob.length);
 123         }
 124
 125         dyn_len = MAX(1, blobs_offset + blob.length);
 126         dyn = talloc_zero_array(state, uint8_t, dyn_len);
 127         if (tevent_req_nomem(dyn, req)) {
 128                 return tevent_req_post(req, ev);
 129         }
 130
 131         if (name_utf16) {
 132                 memcpy(dyn, name_utf16, name_utf16_len);
 133                 TALLOC_FREE(name_utf16);
 134         }
 135
 136         if (blob.data != NULL) {
 137                 memcpy(dyn + blobs_offset,
 138                        blob.data, blob.length);
 139                 data_blob_free(&blob);
 140         }
 141
 142         subreq = smb2cli_req_send(state, ev, conn, SMB2_OP_CREATE,
 143                                   0, 0, /* flags */
 144                                   timeout_msec,
 145                                   0xFEFF, /* pid */
 146                                   tcon_id,
 147                                   session,
 148                                   state->fixed, sizeof(state->fixed),
 149                                   dyn, dyn_len);
 150         if (tevent_req_nomem(subreq, req)) {
 151                 return tevent_req_post(req, ev);
 152         }
 153         tevent_req_set_callback(subreq, smb2cli_create_done, req);
 154         return req;
 155 }
 156
 157 static void smb2cli_create_done(struct tevent_req *subreq)
 158 {
 159         struct tevent_req *req =
 160                 tevent_req_callback_data(subreq,
 161                 struct tevent_req);
 162         struct smb2cli_create_state *state =
 163                 tevent_req_data(req,
 164                 struct smb2cli_create_state);
 165         NTSTATUS status;
 166         struct iovec *iov;
 167         uint8_t *body;
 168         uint32_t offset, length;
 169         static const struct smb2cli_req_expected_response expected[] = {
 170         {
 171                 .status = NT_STATUS_OK,
 172                 .body_size = 0x59
 173         }
 174         };
 175
 176         status = smb2cli_req_recv(subreq, state, &iov,
 177                                   expected, ARRAY_SIZE(expected));
 178         if (tevent_req_nterror(req, status)) {
 179                 return;
 180         }
 181
 182         body = (uint8_t *)iov[1].iov_base;
 183
 184         state->oplock_level     = CVAL(body, 2);
 185         state->create_action    = IVAL(body, 4);
 186         state->creation_time    = interpret_long_date((char *)body + 8);
 187         state->last_access_time = interpret_long_date((char *)body + 16);
 188         state->last_write_time  = interpret_long_date((char *)body + 24);
 189         state->change_time      = interpret_long_date((char *)body + 32);
 190         state->allocation_size  = BVAL(body, 40);
 191         state->end_of_file      = BVAL(body, 48);
 192         state->file_attributes  = IVAL(body, 56);
 193         state->fid_persistent   = BVAL(body, 64);
 194         state->fid_volatile     = BVAL(body, 72);
 195
 196         offset = IVAL(body, 80);
 197         length = IVAL(body, 84);
 198
 199         if ((offset != 0) && (length != 0)) {
 200                 if ((offset != SMB2_HDR_BODY + 88) ||
 201                     (length > iov[2].iov_len)) {
 202                         tevent_req_nterror(
 203                                 req, NT_STATUS_INVALID_NETWORK_RESPONSE);
 204                         return;
 205                 }
 206                 status = smb2_create_blob_parse(
 207                         state, data_blob_const(iov[2].iov_base, length),
 208                         &state->blobs);
 209                 if (tevent_req_nterror(req, status)) {
 210                         return;
 211                 }
 212         }
 213         tevent_req_done(req);
 214 }
 215
 216 NTSTATUS smb2cli_create_recv(struct tevent_req *req,
 217                              uint64_t *fid_persistent,
 218                              uint64_t *fid_volatile)
 219 {
 220         struct smb2cli_create_state *state =
 221                 tevent_req_data(req,
 222                 struct smb2cli_create_state);
 223         NTSTATUS status;
 224
 225         if (tevent_req_is_nterror(req, &status)) {
 226                 return status;
 227         }
 228         *fid_persistent = state->fid_persistent;
 229         *fid_volatile = state->fid_volatile;
 230         return NT_STATUS_OK;
 231 }
 232
 233 NTSTATUS smb2cli_create(struct smbXcli_conn *conn,
 234                         uint32_t timeout_msec,
 235                         struct smbXcli_session *session,
 236                         uint32_t tcon_id,
 237                         const char *filename,
 238                         uint8_t  oplock_level,       /* SMB2_OPLOCK_LEVEL_* */
 239                         uint32_t impersonation_level, /* SMB2_IMPERSONATION_* */
 240                         uint32_t desired_access,
 241                         uint32_t file_attributes,
 242                         uint32_t share_access,
 243                         uint32_t create_disposition,
 244                         uint32_t create_options,
 245                         struct smb2_create_blobs *blobs,
 246                         uint64_t *fid_persistent,
 247                         uint64_t *fid_volatile)
 248 {
 249         TALLOC_CTX *frame = talloc_stackframe();
 250         struct event_context *ev;
 251         struct tevent_req *req;
 252         NTSTATUS status = NT_STATUS_NO_MEMORY;
 253
 254         if (smbXcli_conn_has_async_calls(conn)) {
 255                 /*
 256                  * Can't use sync call while an async call is in flight
 257                  */
 258                 status = NT_STATUS_INVALID_PARAMETER;
 259                 goto fail;
 260         }
 261         ev = event_context_init(frame);
 262         if (ev == NULL) {
 263                 goto fail;
 264         }
 265         req = smb2cli_create_send(frame, ev, conn, timeout_msec, session,
 266                                   tcon_id, filename, oplock_level,
 267                                   impersonation_level, desired_access,
 268                                   file_attributes, share_access,
 269                                   create_disposition, create_options,
 270                                   blobs);
 271         if (req == NULL) {
 272                 goto fail;
 273         }
 274         if (!tevent_req_poll_ntstatus(req, ev, &status)) {
 275                 goto fail;
 276         }
 277         status = smb2cli_create_recv(req, fid_persistent, fid_volatile);
 278  fail:
 279         TALLOC_FREE(frame);
 280         return status;
 281 }