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