libcli/smb/smb2cli_close.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 "system/network.h"
  22 #include "lib/util/tevent_ntstatus.h"
  23 #include "smb_common.h"
  24 #include "smbXcli_base.h"
  25
  26 struct smb2cli_close_state {
  27         uint8_t fixed[24];
  28 };
  29
  30 static void smb2cli_close_done(struct tevent_req *subreq);
  31
  32 struct tevent_req *smb2cli_close_send(TALLOC_CTX *mem_ctx,
  33                                       struct tevent_context *ev,
  34                                       struct smbXcli_conn *conn,
  35                                       uint32_t timeout_msec,
  36                                       struct smbXcli_session *session,
  37                                       struct smbXcli_tcon *tcon,
  38                                       uint16_t flags,
  39                                       uint64_t fid_persistent,
  40                                       uint64_t fid_volatile)
  41 {
  42         struct tevent_req *req, *subreq;
  43         struct smb2cli_close_state *state;
  44         uint8_t *fixed;
  45         uint32_t tcon_id = 0;
  46
  47         req = tevent_req_create(mem_ctx, &state,
  48                                 struct smb2cli_close_state);
  49         if (req == NULL) {
  50                 return NULL;
  51         }
  52         fixed = state->fixed;
  53         SSVAL(fixed, 0, 24);
  54         SSVAL(fixed, 2, flags);
  55         SBVAL(fixed, 8, fid_persistent);
  56         SBVAL(fixed, 16, fid_volatile);
  57
  58         if (tcon) {
  59                 tcon_id = smb2cli_tcon_current_id(tcon);
  60         }
  61
  62         subreq = smb2cli_req_send(state, ev, conn, SMB2_OP_CLOSE,
  63                                   0, 0, /* flags */
  64                                   timeout_msec,
  65                                   0xFEFF, /* pid */
  66                                   tcon_id,
  67                                   session,
  68                                   state->fixed, sizeof(state->fixed),
  69                                   NULL, 0);
  70         if (tevent_req_nomem(subreq, req)) {
  71                 return tevent_req_post(req, ev);
  72         }
  73         tevent_req_set_callback(subreq, smb2cli_close_done, req);
  74         return req;
  75 }
  76
  77 static void smb2cli_close_done(struct tevent_req *subreq)
  78 {
  79         struct tevent_req *req =
  80                 tevent_req_callback_data(subreq,
  81                 struct tevent_req);
  82         NTSTATUS status;
  83         static const struct smb2cli_req_expected_response expected[] = {
  84         {
  85                 .status = NT_STATUS_OK,
  86                 .body_size = 0x3C
  87         }
  88         };
  89
  90         status = smb2cli_req_recv(subreq, NULL, NULL,
  91                                   expected, ARRAY_SIZE(expected));
  92         if (tevent_req_nterror(req, status)) {
  93                 return;
  94         }
  95         tevent_req_done(req);
  96 }
  97
  98 NTSTATUS smb2cli_close_recv(struct tevent_req *req)
  99 {
 100         return tevent_req_simple_recv_ntstatus(req);
 101 }
 102
 103 NTSTATUS smb2cli_close(struct smbXcli_conn *conn,
 104                        uint32_t timeout_msec,
 105                        struct smbXcli_session *session,
 106                        struct smbXcli_tcon *tcon,
 107                        uint16_t flags,
 108                        uint64_t fid_persistent,
 109                        uint64_t fid_volatile)
 110 {
 111         TALLOC_CTX *frame = talloc_stackframe();
 112         struct tevent_context *ev;
 113         struct tevent_req *req;
 114         NTSTATUS status = NT_STATUS_NO_MEMORY;
 115
 116         if (smbXcli_conn_has_async_calls(conn)) {
 117                 /*
 118                  * Can't use sync call while an async call is in flight
 119                  */
 120                 status = NT_STATUS_INVALID_PARAMETER;
 121                 goto fail;
 122         }
 123         ev = tevent_context_init(frame);
 124         if (ev == NULL) {
 125                 goto fail;
 126         }
 127         req = smb2cli_close_send(frame, ev, conn, timeout_msec,
 128                                  session, tcon, flags,
 129                                  fid_persistent, fid_volatile);
 130         if (req == NULL) {
 131                 goto fail;
 132         }
 133         if (!tevent_req_poll_ntstatus(req, ev, &status)) {
 134                 goto fail;
 135         }
 136         status = smb2cli_close_recv(req);
 137  fail:
 138         TALLOC_FREE(frame);
 139         return status;
 140 }