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, uint16_t additional_flags2, 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 clear_flags2 = 0;
  63
  64         state = talloc_zero(mem_ctx, struct cli_trans_state);
  65         if (state == NULL) {
  66                 return NULL;
  67         }
  68         state->cli = cli;
  69         state->ptr = talloc(state, struct cli_trans_state *);
  70         if (state->ptr == NULL) {
  71                 talloc_free(state);
  72                 return NULL;
  73         }
  74         *state->ptr = state;
  75
  76         state->req = smb1cli_trans_send(state, ev,
  77                                         cli->conn, cmd,
  78                                         additional_flags, clear_flags,
  79                                         additional_flags2, clear_flags2,
  80                                         cli->timeout,
  81                                         cli->smb1.pid,
  82                                         cli->smb1.tcon,
  83                                         cli->smb1.session,
  84                                         pipe_name, fid, function, flags,
  85                                         setup, num_setup, max_setup,
  86                                         param, num_param, max_param,
  87                                         data, num_data, max_data);
  88         if (state->req == NULL) {
  89                 talloc_free(state);
  90                 return NULL;
  91         }
  92
  93         talloc_reparent(state, state->req, state->ptr);
  94         talloc_set_destructor(state, cli_trans_state_destructor);
  95         talloc_set_destructor(state->ptr, cli_trans_state_ptr_destructor);
  96
  97         return state->req;
  98 }
  99
 100 NTSTATUS cli_trans_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx,
 101                         uint16_t *recv_flags2,
 102                         uint16_t **setup, uint8_t min_setup,
 103                         uint8_t *num_setup,
 104                         uint8_t **param, uint32_t min_param,
 105                         uint32_t *num_param,
 106                         uint8_t **data, uint32_t min_data,
 107                         uint32_t *num_data)
 108 {
 109         NTSTATUS status;
 110         void *parent = talloc_parent(req);
 111         struct cli_trans_state *state =
 112                 talloc_get_type(parent,
 113                 struct cli_trans_state);
 114         bool map_dos_errors = true;
 115
 116         status = smb1cli_trans_recv(req, mem_ctx, recv_flags2,
 117                                     setup, min_setup, num_setup,
 118                                     param, min_param, num_param,
 119                                     data, min_data, num_data);
 120
 121         if (state) {
 122                 map_dos_errors = state->cli->map_dos_errors;
 123                 state->cli->raw_status = status;
 124                 talloc_free(state->ptr);
 125                 state = NULL;
 126         }
 127
 128         if (NT_STATUS_IS_DOS(status) && map_dos_errors) {
 129                 uint8_t eclass = NT_STATUS_DOS_CLASS(status);
 130                 uint16_t ecode = NT_STATUS_DOS_CODE(status);
 131                 /*
 132                  * TODO: is it really a good idea to do a mapping here?
 133                  *
 134                  * The old cli_pull_error() also does it, so I do not change
 135                  * the behavior yet.
 136                  */
 137                 status = dos_to_ntstatus(eclass, ecode);
 138         }
 139
 140         return status;
 141 }
 142
 143 NTSTATUS cli_trans(TALLOC_CTX *mem_ctx, struct cli_state *cli,
 144                    uint8_t trans_cmd,
 145                    const char *pipe_name, uint16_t fid, uint16_t function,
 146                    int flags,
 147                    uint16_t *setup, uint8_t num_setup, uint8_t max_setup,
 148                    uint8_t *param, uint32_t num_param, uint32_t max_param,
 149                    uint8_t *data, uint32_t num_data, uint32_t max_data,
 150                    uint16_t *recv_flags2,
 151                    uint16_t **rsetup, uint8_t min_rsetup, uint8_t *num_rsetup,
 152                    uint8_t **rparam, uint32_t min_rparam, uint32_t *num_rparam,
 153                    uint8_t **rdata, uint32_t min_rdata, uint32_t *num_rdata)
 154 {
 155         NTSTATUS status;
 156         uint8_t additional_flags = 0;
 157         uint8_t clear_flags = 0;
 158         uint16_t additional_flags2 = 0;
 159         uint16_t clear_flags2 = 0;
 160
 161         status = smb1cli_trans(mem_ctx,
 162                                cli->conn, trans_cmd,
 163                                additional_flags, clear_flags,
 164                                additional_flags2, clear_flags2,
 165                                cli->timeout,
 166                                cli->smb1.pid,
 167                                cli->smb1.tcon,
 168                                cli->smb1.session,
 169                                pipe_name, fid, function, flags,
 170                                setup, num_setup, max_setup,
 171                                param, num_param, max_param,
 172                                data, num_data, max_data,
 173                                recv_flags2,
 174                                rsetup, min_rsetup, num_rsetup,
 175                                rparam, min_rparam, num_rparam,
 176                                rdata, min_rdata, num_rdata);
 177
 178         cli->raw_status = status;
 179
 180         if (NT_STATUS_IS_DOS(status) && cli->map_dos_errors) {
 181                 uint8_t eclass = NT_STATUS_DOS_CLASS(status);
 182                 uint16_t ecode = NT_STATUS_DOS_CODE(status);
 183                 /*
 184                  * TODO: is it really a good idea to do a mapping here?
 185                  *
 186                  * The old cli_pull_error() also does it, so I do not change
 187                  * the behavior yet.
 188                  */
 189                 status = dos_to_ntstatus(eclass, ecode);
 190         }
 191
 192         return status;
 193 }