source3/libsmb/clitrans.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    client transaction calls
   4    Copyright (C) Andrew Tridgell 1994-1998
   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 "libsmb/libsmb.h"
  22 #include "../lib/util/tevent_ntstatus.h"
  23 #include "async_smb.h"
  24 #include "../libcli/smb/smbXcli_base.h"
  25
  26 struct cli_trans_state {
  27         struct cli_state *cli;
  28         struct tevent_req *req;
  29         struct cli_trans_state **ptr;
  30 };
  31
  32 static int cli_trans_state_destructor(struct cli_trans_state *state)
  33 {
  34         talloc_set_destructor(state->ptr, NULL);
  35         talloc_free(state->ptr);
  36         return 0;
  37 }
  38
  39 static int cli_trans_state_ptr_destructor(struct cli_trans_state **ptr)
  40 {
  41         struct cli_trans_state *state = *ptr;
  42         void *parent = talloc_parent(state);
  43
  44         talloc_set_destructor(state, NULL);
  45
  46         talloc_reparent(state, parent, state->req);
  47         talloc_free(state);
  48         return 0;
  49 }
  50
  51 struct tevent_req *cli_trans_send(
  52         TALLOC_CTX *mem_ctx, struct tevent_context *ev,
  53         struct cli_state *cli, uint8_t cmd,
  54         const char *pipe_name, uint16_t fid, uint16_t function, int flags,
  55         uint16_t *setup, uint8_t num_setup, uint8_t max_setup,
  56         uint8_t *param, uint32_t num_param, uint32_t max_param,
  57         uint8_t *data, uint32_t num_data, uint32_t max_data)
  58 {
  59         struct cli_trans_state *state;
  60         uint8_t additional_flags = 0;
  61         uint8_t clear_flags = 0;
  62         uint16_t additional_flags2 = 0;
  63         uint16_t clear_flags2 = 0;
  64
  65         state = talloc_zero(mem_ctx, struct cli_trans_state);
  66         if (state == NULL) {
  67                 return NULL;
  68         }
  69         state->cli = cli;
  70         state->ptr = talloc(state, struct cli_trans_state *);
  71         if (state->ptr == NULL) {
  72                 talloc_free(state);
  73                 return NULL;
  74         }
  75         *state->ptr = state;
  76
  77         state->req = smb1cli_trans_send(state, ev,
  78                                         cli->conn, cmd,
  79                                         additional_flags, clear_flags,
  80                                         additional_flags2, clear_flags2,
  81                                         cli->timeout,
  82                                         cli->smb1.pid,
  83                                         cli->smb1.tcon,
  84                                         cli->smb1.session,
  85                                         pipe_name, fid, function, flags,
  86                                         setup, num_setup, max_setup,
  87                                         param, num_param, max_param,
  88                                         data, num_data, max_data);
  89         if (state->req == NULL) {
  90                 talloc_free(state);
  91                 return NULL;
  92         }
  93
  94         talloc_reparent(state, state->req, state->ptr);
  95         talloc_set_destructor(state, cli_trans_state_destructor);
  96         talloc_set_destructor(state->ptr, cli_trans_state_ptr_destructor);
  97
  98         return state->req;
  99 }
 100
 101 NTSTATUS cli_trans_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx,
 102                         uint16_t *recv_flags2,
 103                         uint16_t **setup, uint8_t min_setup,
 104                         uint8_t *num_setup,
 105                         uint8_t **param, uint32_t min_param,
 106                         uint32_t *num_param,
 107                         uint8_t **data, uint32_t min_data,
 108                         uint32_t *num_data)
 109 {
 110         NTSTATUS status;
 111         void *parent = talloc_parent(req);
 112         struct cli_trans_state *state =
 113                 talloc_get_type(parent,
 114                 struct cli_trans_state);
 115         bool map_dos_errors = true;
 116
 117         status = smb1cli_trans_recv(req, mem_ctx, recv_flags2,
 118                                     setup, min_setup, num_setup,
 119                                     param, min_param, num_param,
 120                                     data, min_data, num_data);
 121
 122         if (state) {
 123                 map_dos_errors = state->cli->map_dos_errors;
 124                 state->cli->raw_status = status;
 125                 talloc_free(state->ptr);
 126                 state = NULL;
 127         }
 128
 129         if (NT_STATUS_IS_DOS(status) && map_dos_errors) {
 130                 uint8_t eclass = NT_STATUS_DOS_CLASS(status);
 131                 uint16_t ecode = NT_STATUS_DOS_CODE(status);
 132                 /*
 133                  * TODO: is it really a good idea to do a mapping here?
 134                  *
 135                  * The old cli_pull_error() also does it, so I do not change
 136                  * the behavior yet.
 137                  */
 138                 status = dos_to_ntstatus(eclass, ecode);
 139         }
 140
 141         return status;
 142 }
 143
 144 NTSTATUS cli_trans(TALLOC_CTX *mem_ctx, struct cli_state *cli,
 145                    uint8_t trans_cmd,
 146                    const char *pipe_name, uint16_t fid, uint16_t function,
 147                    int flags,
 148                    uint16_t *setup, uint8_t num_setup, uint8_t max_setup,
 149                    uint8_t *param, uint32_t num_param, uint32_t max_param,
 150                    uint8_t *data, uint32_t num_data, uint32_t max_data,
 151                    uint16_t *recv_flags2,
 152                    uint16_t **rsetup, uint8_t min_rsetup, uint8_t *num_rsetup,
 153                    uint8_t **rparam, uint32_t min_rparam, uint32_t *num_rparam,
 154                    uint8_t **rdata, uint32_t min_rdata, uint32_t *num_rdata)
 155 {
 156         NTSTATUS status;
 157         uint8_t additional_flags = 0;
 158         uint8_t clear_flags = 0;
 159         uint16_t additional_flags2 = 0;
 160         uint16_t clear_flags2 = 0;
 161
 162         status = smb1cli_trans(mem_ctx,
 163                                cli->conn, trans_cmd,
 164                                additional_flags, clear_flags,
 165                                additional_flags2, clear_flags2,
 166                                cli->timeout,
 167                                cli->smb1.pid,
 168                                cli->smb1.tcon,
 169                                cli->smb1.session,
 170                                pipe_name, fid, function, flags,
 171                                setup, num_setup, max_setup,
 172                                param, num_param, max_param,
 173                                data, num_data, max_data,
 174                                recv_flags2,
 175                                rsetup, min_rsetup, num_rsetup,
 176                                rparam, min_rparam, num_rparam,
 177                                rdata, min_rdata, num_rdata);
 178
 179         cli->raw_status = status;
 180
 181         if (NT_STATUS_IS_DOS(status) && cli->map_dos_errors) {
 182                 uint8_t eclass = NT_STATUS_DOS_CLASS(status);
 183                 uint16_t ecode = NT_STATUS_DOS_CODE(status);
 184                 /*
 185                  * TODO: is it really a good idea to do a mapping here?
 186                  *
 187                  * The old cli_pull_error() also does it, so I do not change
 188                  * the behavior yet.
 189                  */
 190                 status = dos_to_ntstatus(eclass, ecode);
 191         }
 192
 193         return status;
 194 }