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         uint16_t uid = 0;
  65
  66         state = talloc_zero(mem_ctx, struct cli_trans_state);
  67         if (state == NULL) {
  68                 return NULL;
  69         }
  70         state->cli = cli;
  71         state->ptr = talloc(state, struct cli_trans_state *);
  72         if (state->ptr == NULL) {
  73                 talloc_free(state);
  74                 return NULL;
  75         }
  76         *state->ptr = state;
  77         if (cli->case_sensitive) {
  78                 clear_flags |= FLAG_CASELESS_PATHNAMES;
  79         } else {
  80                 /* Default setting, case insensitive. */
  81                 additional_flags |= FLAG_CASELESS_PATHNAMES;
  82         }
  83
  84         if ((smb1cli_conn_capabilities(cli->conn) & CAP_DFS) && cli->dfsroot) {
  85                 additional_flags2 |= FLAGS2_DFS_PATHNAMES;
  86         }
  87
  88         uid = cli_state_get_uid(cli);
  89         state->req = smb1cli_trans_send(state, ev,
  90                                         cli->conn, cmd,
  91                                         additional_flags, clear_flags,
  92                                         additional_flags2, clear_flags2,
  93                                         cli->timeout,
  94                                         cli->smb1.pid, cli->smb1.tid, uid,
  95                                         pipe_name, fid, function, flags,
  96                                         setup, num_setup, max_setup,
  97                                         param, num_param, max_param,
  98                                         data, num_data, max_data);
  99         if (state->req == NULL) {
 100                 talloc_free(state);
 101                 return NULL;
 102         }
 103
 104         talloc_reparent(state, state->req, state->ptr);
 105         talloc_set_destructor(state, cli_trans_state_destructor);
 106         talloc_set_destructor(state->ptr, cli_trans_state_ptr_destructor);
 107
 108         return state->req;
 109 }
 110
 111 NTSTATUS cli_trans_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx,
 112                         uint16_t *recv_flags2,
 113                         uint16_t **setup, uint8_t min_setup,
 114                         uint8_t *num_setup,
 115                         uint8_t **param, uint32_t min_param,
 116                         uint32_t *num_param,
 117                         uint8_t **data, uint32_t min_data,
 118                         uint32_t *num_data)
 119 {
 120         NTSTATUS status;
 121         void *parent = talloc_parent(req);
 122         struct cli_trans_state *state =
 123                 talloc_get_type(parent,
 124                 struct cli_trans_state);
 125         bool map_dos_errors = true;
 126
 127         status = smb1cli_trans_recv(req, mem_ctx, recv_flags2,
 128                                     setup, min_setup, num_setup,
 129                                     param, min_param, num_param,
 130                                     data, min_data, num_data);
 131
 132         if (state) {
 133                 map_dos_errors = state->cli->map_dos_errors;
 134                 state->cli->raw_status = status;
 135                 talloc_free(state->ptr);
 136                 state = NULL;
 137         }
 138
 139         if (NT_STATUS_IS_DOS(status) && map_dos_errors) {
 140                 uint8_t eclass = NT_STATUS_DOS_CLASS(status);
 141                 uint16_t ecode = NT_STATUS_DOS_CODE(status);
 142                 /*
 143                  * TODO: is it really a good idea to do a mapping here?
 144                  *
 145                  * The old cli_pull_error() also does it, so I do not change
 146                  * the behavior yet.
 147                  */
 148                 status = dos_to_ntstatus(eclass, ecode);
 149         }
 150
 151         return status;
 152 }
 153
 154 NTSTATUS cli_trans(TALLOC_CTX *mem_ctx, struct cli_state *cli,
 155                    uint8_t trans_cmd,
 156                    const char *pipe_name, uint16_t fid, uint16_t function,
 157                    int flags,
 158                    uint16_t *setup, uint8_t num_setup, uint8_t max_setup,
 159                    uint8_t *param, uint32_t num_param, uint32_t max_param,
 160                    uint8_t *data, uint32_t num_data, uint32_t max_data,
 161                    uint16_t *recv_flags2,
 162                    uint16_t **rsetup, uint8_t min_rsetup, uint8_t *num_rsetup,
 163                    uint8_t **rparam, uint32_t min_rparam, uint32_t *num_rparam,
 164                    uint8_t **rdata, uint32_t min_rdata, uint32_t *num_rdata)
 165 {
 166         NTSTATUS status;
 167         uint8_t additional_flags = 0;
 168         uint8_t clear_flags = 0;
 169         uint16_t additional_flags2 = 0;
 170         uint16_t clear_flags2 = 0;
 171         uint16_t uid = 0;
 172
 173         if (cli->case_sensitive) {
 174                 clear_flags |= FLAG_CASELESS_PATHNAMES;
 175         } else {
 176                 /* Default setting, case insensitive. */
 177                 additional_flags |= FLAG_CASELESS_PATHNAMES;
 178         }
 179
 180         if ((smb1cli_conn_capabilities(cli->conn) & CAP_DFS) && cli->dfsroot) {
 181                 additional_flags2 |= FLAGS2_DFS_PATHNAMES;
 182         }
 183
 184         uid = cli_state_get_uid(cli);
 185         status = smb1cli_trans(mem_ctx,
 186                                cli->conn, trans_cmd,
 187                                additional_flags, clear_flags,
 188                                additional_flags2, clear_flags2,
 189                                cli->timeout,
 190                                cli->smb1.pid, cli->smb1.tid, uid,
 191                                pipe_name, fid, function, flags,
 192                                setup, num_setup, max_setup,
 193                                param, num_param, max_param,
 194                                data, num_data, max_data,
 195                                recv_flags2,
 196                                rsetup, min_rsetup, num_rsetup,
 197                                rparam, min_rparam, num_rparam,
 198                                rdata, min_rdata, num_rdata);
 199
 200         cli->raw_status = status;
 201
 202         if (NT_STATUS_IS_DOS(status) && cli->map_dos_errors) {
 203                 uint8_t eclass = NT_STATUS_DOS_CLASS(status);
 204                 uint16_t ecode = NT_STATUS_DOS_CODE(status);
 205                 /*
 206                  * TODO: is it really a good idea to do a mapping here?
 207                  *
 208                  * The old cli_pull_error() also does it, so I do not change
 209                  * the behavior yet.
 210                  */
 211                 status = dos_to_ntstatus(eclass, ecode);
 212         }
 213
 214         return status;
 215 }