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 "smb2cli_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 cli_state *cli,
  52         const char *filename,
  53         uint8_t  oplock_level,          /* SMB2_OPLOCK_LEVEL_* */
  54         uint32_t impersonation_level,   /* SMB2_IMPERSONATION_* */
  55         uint32_t desired_access,
  56         uint32_t file_attributes,
  57         uint32_t share_access,
  58         uint32_t create_disposition,
  59         uint32_t create_options,
  60         struct smb2_create_blobs *blobs)
  61 {
  62         struct tevent_req *req, *subreq;
  63         struct smb2cli_create_state *state;
  64         uint8_t *fixed;
  65         uint8_t *name_utf16;
  66         size_t name_utf16_len;
  67         DATA_BLOB blob;
  68         NTSTATUS status;
  69         size_t blobs_offset;
  70         uint8_t *dyn;
  71         size_t dyn_len;
  72
  73         req = tevent_req_create(mem_ctx, &state,
  74                                 struct smb2cli_create_state);
  75         if (req == NULL) {
  76                 return NULL;
  77         }
  78
  79         if (!convert_string_talloc(state, CH_UNIX, CH_UTF16,
  80                                    filename, strlen(filename),
  81                                    &name_utf16, &name_utf16_len)) {
  82                 tevent_req_oom(req);
  83                 return tevent_req_post(req, ev);
  84         }
  85
  86         if (strlen(filename) == 0) {
  87                 TALLOC_FREE(name_utf16);
  88                 name_utf16_len = 0;
  89         }
  90
  91         fixed = state->fixed;
  92
  93         SSVAL(fixed, 0, 57);
  94         SCVAL(fixed, 3, oplock_level);
  95         SIVAL(fixed, 4, impersonation_level);
  96         SIVAL(fixed, 24, desired_access);
  97         SIVAL(fixed, 28, file_attributes);
  98         SIVAL(fixed, 32, share_access);
  99         SIVAL(fixed, 36, create_disposition);
 100         SIVAL(fixed, 40, create_options);
 101
 102         SSVAL(fixed, 44, SMB2_HDR_BODY + 56);
 103         SSVAL(fixed, 46, name_utf16_len);
 104
 105         blob = data_blob_null;
 106
 107         if (blobs != NULL) {
 108                 status = smb2_create_blob_push(talloc_tos(), &blob, *blobs);
 109                 if (tevent_req_nterror(req, status)) {
 110                         return tevent_req_post(req, ev);
 111                 }
 112         }
 113
 114         blobs_offset = name_utf16_len;
 115         blobs_offset = ((blobs_offset + 3) & ~3);
 116
 117         if (blob.length > 0) {
 118                 SIVAL(fixed, 48, blobs_offset + SMB2_HDR_BODY + 56);
 119                 SIVAL(fixed, 52, blob.length);
 120         }
 121
 122         dyn_len = MAX(1, blobs_offset + blob.length);
 123         dyn = talloc_zero_array(state, uint8_t, dyn_len);
 124         if (tevent_req_nomem(dyn, req)) {
 125                 return tevent_req_post(req, ev);
 126         }
 127
 128         if (name_utf16) {
 129                 memcpy(dyn, name_utf16, name_utf16_len);
 130                 TALLOC_FREE(name_utf16);
 131         }
 132
 133         if (blob.data != NULL) {
 134                 memcpy(dyn + blobs_offset,
 135                        blob.data, blob.length);
 136                 data_blob_free(&blob);
 137         }
 138
 139         subreq = smb2cli_req_send(state, ev, cli, SMB2_OP_CREATE,
 140                                   0, 0, /* flags */
 141                                   cli->smb2.pid,
 142                                   cli->smb2.tid,
 143                                   cli->smb2.uid,
 144                                   state->fixed, sizeof(state->fixed),
 145                                   dyn, dyn_len);
 146         if (tevent_req_nomem(subreq, req)) {
 147                 return tevent_req_post(req, ev);
 148         }
 149         tevent_req_set_callback(subreq, smb2cli_create_done, req);
 150         return req;
 151 }
 152
 153 static void smb2cli_create_done(struct tevent_req *subreq)
 154 {
 155         struct tevent_req *req =
 156                 tevent_req_callback_data(subreq,
 157                 struct tevent_req);
 158         struct smb2cli_create_state *state =
 159                 tevent_req_data(req,
 160                 struct smb2cli_create_state);
 161         NTSTATUS status;
 162         struct iovec *iov;
 163         uint8_t *body;
 164         uint32_t offset, length;
 165
 166         status = smb2cli_req_recv(subreq, talloc_tos(), &iov, 89);
 167         if (tevent_req_nterror(req, status)) {
 168                 return;
 169         }
 170
 171         body = (uint8_t *)iov[1].iov_base;
 172
 173         state->oplock_level     = CVAL(body, 2);
 174         state->create_action    = IVAL(body, 4);
 175         state->creation_time    = interpret_long_date((char *)body + 8);
 176         state->last_access_time = interpret_long_date((char *)body + 16);
 177         state->last_write_time  = interpret_long_date((char *)body + 24);
 178         state->change_time      = interpret_long_date((char *)body + 32);
 179         state->allocation_size  = BVAL(body, 40);
 180         state->end_of_file      = BVAL(body, 48);
 181         state->file_attributes  = IVAL(body, 56);
 182         state->fid_persistent   = BVAL(body, 64);
 183         state->fid_volatile     = BVAL(body, 72);
 184
 185         offset = IVAL(body, 80);
 186         length = IVAL(body, 84);
 187
 188         if ((offset != 0) && (length != 0)) {
 189                 if ((offset != SMB2_HDR_BODY + 88) ||
 190                     (length > iov[2].iov_len)) {
 191                         tevent_req_nterror(
 192                                 req, NT_STATUS_INVALID_NETWORK_RESPONSE);
 193                         return;
 194                 }
 195                 status = smb2_create_blob_parse(
 196                         state, data_blob_const(iov[2].iov_base, length),
 197                         &state->blobs);
 198                 if (tevent_req_nterror(req, status)) {
 199                         return;
 200                 }
 201         }
 202         tevent_req_done(req);
 203 }
 204
 205 NTSTATUS smb2cli_create_recv(struct tevent_req *req,
 206                              uint64_t *fid_persistent,
 207                              uint64_t *fid_volatile)
 208 {
 209         struct smb2cli_create_state *state =
 210                 tevent_req_data(req,
 211                 struct smb2cli_create_state);
 212         NTSTATUS status;
 213
 214         if (tevent_req_is_nterror(req, &status)) {
 215                 return status;
 216         }
 217         *fid_persistent = state->fid_persistent;
 218         *fid_volatile = state->fid_volatile;
 219         return NT_STATUS_OK;
 220 }
 221
 222 NTSTATUS smb2cli_create(struct cli_state *cli,
 223                         const char *filename,
 224                         uint8_t  oplock_level,       /* SMB2_OPLOCK_LEVEL_* */
 225                         uint32_t impersonation_level, /* SMB2_IMPERSONATION_* */
 226                         uint32_t desired_access,
 227                         uint32_t file_attributes,
 228                         uint32_t share_access,
 229                         uint32_t create_disposition,
 230                         uint32_t create_options,
 231                         struct smb2_create_blobs *blobs,
 232                         uint64_t *fid_persistent,
 233                         uint64_t *fid_volatile)
 234 {
 235         TALLOC_CTX *frame = talloc_stackframe();
 236         struct event_context *ev;
 237         struct tevent_req *req;
 238         NTSTATUS status = NT_STATUS_NO_MEMORY;
 239
 240         if (cli_has_async_calls(cli)) {
 241                 /*
 242                  * Can't use sync call while an async call is in flight
 243                  */
 244                 status = NT_STATUS_INVALID_PARAMETER;
 245                 goto fail;
 246         }
 247         ev = event_context_init(frame);
 248         if (ev == NULL) {
 249                 goto fail;
 250         }
 251         req = smb2cli_create_send(frame, ev, cli, filename, oplock_level,
 252                                   impersonation_level, desired_access,
 253                                   file_attributes, share_access,
 254                                   create_disposition, create_options,
 255                                   blobs);
 256         if (req == NULL) {
 257                 goto fail;
 258         }
 259         if (!tevent_req_poll_ntstatus(req, ev, &status)) {
 260                 goto fail;
 261         }
 262         status = smb2cli_create_recv(req, fid_persistent, fid_volatile);
 263  fail:
 264         TALLOC_FREE(frame);
 265         return status;
 266 }