libcli/smb/smb2cli_set_info.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    smb2 lib
   4    Copyright (C) Stefan Metzmacher 2012
   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 "system/network.h"
  22 #include "lib/util/tevent_ntstatus.h"
  23 #include "smb_common.h"
  24 #include "smbXcli_base.h"
  25
  26 struct smb2cli_set_info_state {
  27         uint8_t fixed[0x20];
  28         uint8_t dyn_pad[1];
  29 };
  30
  31 static void smb2cli_set_info_done(struct tevent_req *subreq);
  32
  33 struct tevent_req *smb2cli_set_info_send(TALLOC_CTX *mem_ctx,
  34                                          struct tevent_context *ev,
  35                                          struct smbXcli_conn *conn,
  36                                          uint32_t timeout_msec,
  37                                          struct smbXcli_session *session,
  38                                          uint32_t tcon_id,
  39                                          uint8_t in_info_type,
  40                                          uint8_t in_file_info_class,
  41                                          const DATA_BLOB *in_input_buffer,
  42                                          uint32_t in_additional_info,
  43                                          uint64_t in_fid_persistent,
  44                                          uint64_t in_fid_volatile)
  45 {
  46         struct tevent_req *req, *subreq;
  47         struct smb2cli_set_info_state *state;
  48         uint8_t *fixed;
  49         uint8_t *dyn;
  50         size_t dyn_len;
  51         uint16_t input_buffer_offset = 0;
  52         uint32_t input_buffer_length = 0;
  53
  54         req = tevent_req_create(mem_ctx, &state,
  55                                 struct smb2cli_set_info_state);
  56         if (req == NULL) {
  57                 return NULL;
  58         }
  59
  60         if (in_input_buffer) {
  61                 input_buffer_offset = SMB2_HDR_BODY+0x20;
  62                 input_buffer_length = in_input_buffer->length;
  63         }
  64
  65         fixed = state->fixed;
  66
  67         SSVAL(fixed, 0x00, 0x21);
  68         SCVAL(fixed, 0x02, in_info_type);
  69         SCVAL(fixed, 0x03, in_file_info_class);
  70         SIVAL(fixed, 0x04, input_buffer_length);
  71         SSVAL(fixed, 0x08, input_buffer_offset);
  72         SSVAL(fixed, 0x0A, 0); /* reserved */
  73         SIVAL(fixed, 0x0C, in_additional_info);
  74         SBVAL(fixed, 0x10, in_fid_persistent);
  75         SBVAL(fixed, 0x18, in_fid_volatile);
  76
  77         if (input_buffer_length > 0) {
  78                 dyn = in_input_buffer->data;
  79                 dyn_len = in_input_buffer->length;
  80         } else {
  81                 dyn = state->dyn_pad;
  82                 dyn_len = sizeof(state->dyn_pad);
  83         }
  84
  85         subreq = smb2cli_req_send(state, ev, conn, SMB2_OP_SETINFO,
  86                                   0, 0, /* flags */
  87                                   timeout_msec,
  88                                   0xFEFF, /* pid */
  89                                   tcon_id,
  90                                   session,
  91                                   state->fixed, sizeof(state->fixed),
  92                                   dyn, dyn_len);
  93         if (tevent_req_nomem(subreq, req)) {
  94                 return tevent_req_post(req, ev);
  95         }
  96         tevent_req_set_callback(subreq, smb2cli_set_info_done, req);
  97         return req;
  98 }
  99
 100 static void smb2cli_set_info_done(struct tevent_req *subreq)
 101 {
 102         struct tevent_req *req =
 103                 tevent_req_callback_data(subreq,
 104                 struct tevent_req);
 105         NTSTATUS status;
 106         static const struct smb2cli_req_expected_response expected[] = {
 107         {
 108                 .status = NT_STATUS_OK,
 109                 .body_size = 0x02
 110         },
 111         };
 112
 113         status = smb2cli_req_recv(subreq, NULL, NULL,
 114                                   expected, ARRAY_SIZE(expected));
 115         if (tevent_req_nterror(req, status)) {
 116                 return;
 117         }
 118
 119         tevent_req_done(req);
 120 }
 121
 122 NTSTATUS smb2cli_set_info_recv(struct tevent_req *req)
 123 {
 124         NTSTATUS status;
 125
 126         if (tevent_req_is_nterror(req, &status)) {
 127                 tevent_req_received(req);
 128                 return status;
 129         }
 130
 131         tevent_req_received(req);
 132         return NT_STATUS_OK;
 133 }
 134
 135 NTSTATUS smb2cli_set_info(struct smbXcli_conn *conn,
 136                           uint32_t timeout_msec,
 137                           struct smbXcli_session *session,
 138                           uint32_t tcon_id,
 139                           uint8_t in_info_type,
 140                           uint8_t in_file_info_class,
 141                           const DATA_BLOB *in_input_buffer,
 142                           uint32_t in_additional_info,
 143                           uint64_t in_fid_persistent,
 144                           uint64_t in_fid_volatile)
 145 {
 146         TALLOC_CTX *frame = talloc_stackframe();
 147         struct tevent_context *ev;
 148         struct tevent_req *req;
 149         NTSTATUS status = NT_STATUS_NO_MEMORY;
 150
 151         if (smbXcli_conn_has_async_calls(conn)) {
 152                 /*
 153                  * Can't use sync call while an async call is in flight
 154                  */
 155                 status = NT_STATUS_INVALID_PARAMETER_MIX;
 156                 goto fail;
 157         }
 158         ev = tevent_context_init(frame);
 159         if (ev == NULL) {
 160                 goto fail;
 161         }
 162         req = smb2cli_set_info_send(frame, ev,
 163                                     conn, timeout_msec,
 164                                     session, tcon_id,
 165                                     in_info_type,
 166                                     in_file_info_class,
 167                                     in_input_buffer,
 168                                     in_additional_info,
 169                                     in_fid_persistent,
 170                                     in_fid_volatile);
 171         if (req == NULL) {
 172                 goto fail;
 173         }
 174         if (!tevent_req_poll_ntstatus(req, ev, &status)) {
 175                 goto fail;
 176         }
 177         status = smb2cli_set_info_recv(req);
 178
 179  fail:
 180         TALLOC_FREE(frame);
 181         return status;
 182 }