source/libcli/raw/clitree.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    SMB client tree context management functions
   5
   6    Copyright (C) Andrew Tridgell 1994-2005
   7    Copyright (C) James Myers 2003 <myersjj@samba.org>
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 3 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  21 */
  22
  23 #include "includes.h"
  24 #include "libcli/raw/libcliraw.h"
  25 #include "libcli/smb_composite/smb_composite.h"
  26 #include "param/param.h"
  27
  28 #define SETUP_REQUEST_TREE(cmd, wct, buflen) do { \
  29         req = smbcli_request_setup(tree, cmd, wct, buflen); \
  30         if (!req) return NULL; \
  31 } while (0)
  32
  33 /****************************************************************************
  34  Initialize the tree context
  35 ****************************************************************************/
  36 struct smbcli_tree *smbcli_tree_init(struct smbcli_session *session,
  37                                      TALLOC_CTX *parent_ctx, bool primary)
  38 {
  39         struct smbcli_tree *tree;
  40
  41         tree = talloc_zero(parent_ctx, struct smbcli_tree);
  42         if (!tree) {
  43                 return NULL;
  44         }
  45
  46         if (primary) {
  47                 tree->session = talloc_steal(tree, session);
  48         } else {
  49                 tree->session = talloc_reference(tree, session);
  50         }
  51
  52
  53         return tree;
  54 }
  55
  56 /****************************************************************************
  57  Send a tconX (async send)
  58 ****************************************************************************/
  59 struct smbcli_request *smb_raw_tcon_send(struct smbcli_tree *tree,
  60                                          union smb_tcon *parms)
  61 {
  62         struct smbcli_request *req = NULL;
  63
  64         switch (parms->tcon.level) {
  65         case RAW_TCON_TCON:
  66                 SETUP_REQUEST_TREE(SMBtcon, 0, 0);
  67                 smbcli_req_append_ascii4(req, parms->tcon.in.service, STR_ASCII);
  68                 smbcli_req_append_ascii4(req, parms->tcon.in.password,STR_ASCII);
  69                 smbcli_req_append_ascii4(req, parms->tcon.in.dev,     STR_ASCII);
  70                 break;
  71
  72         case RAW_TCON_TCONX:
  73                 SETUP_REQUEST_TREE(SMBtconX, 4, 0);
  74                 SSVAL(req->out.vwv, VWV(0), 0xFF);
  75                 SSVAL(req->out.vwv, VWV(1), 0);
  76                 SSVAL(req->out.vwv, VWV(2), parms->tconx.in.flags);
  77                 SSVAL(req->out.vwv, VWV(3), parms->tconx.in.password.length);
  78                 smbcli_req_append_blob(req, &parms->tconx.in.password);
  79                 smbcli_req_append_string(req, parms->tconx.in.path,   STR_TERMINATE | STR_UPPER);
  80                 smbcli_req_append_string(req, parms->tconx.in.device, STR_TERMINATE | STR_ASCII);
  81                 break;
  82
  83         case RAW_TCON_SMB2:
  84                 return NULL;
  85         }
  86
  87         if (!smbcli_request_send(req)) {
  88                 smbcli_request_destroy(req);
  89                 return NULL;
  90         }
  91
  92         return req;
  93 }
  94
  95 /****************************************************************************
  96  Send a tconX (async recv)
  97 ****************************************************************************/
  98 NTSTATUS smb_raw_tcon_recv(struct smbcli_request *req, TALLOC_CTX *mem_ctx,
  99                            union smb_tcon *parms)
 100 {
 101         uint8_t *p;
 102
 103         if (!smbcli_request_receive(req) ||
 104             smbcli_request_is_error(req)) {
 105                 goto failed;
 106         }
 107
 108         switch (parms->tcon.level) {
 109         case RAW_TCON_TCON:
 110                 SMBCLI_CHECK_WCT(req, 2);
 111                 parms->tcon.out.max_xmit = SVAL(req->in.vwv, VWV(0));
 112                 parms->tcon.out.tid = SVAL(req->in.vwv, VWV(1));
 113                 break;
 114
 115         case RAW_TCON_TCONX:
 116                 ZERO_STRUCT(parms->tconx.out);
 117                 parms->tconx.out.tid = SVAL(req->in.hdr, HDR_TID);
 118                 if (req->in.wct >= 4) {
 119                         parms->tconx.out.options = SVAL(req->in.vwv, VWV(3));
 120                 }
 121
 122                 /* output is actual service name */
 123                 p = req->in.data;
 124                 if (!p) break;
 125
 126                 p += smbcli_req_pull_string(req, mem_ctx, &parms->tconx.out.dev_type,
 127                                          p, -1, STR_ASCII | STR_TERMINATE);
 128                 p += smbcli_req_pull_string(req, mem_ctx, &parms->tconx.out.fs_type,
 129                                          p, -1, STR_TERMINATE);
 130                 break;
 131
 132         case RAW_TCON_SMB2:
 133                 req->status = NT_STATUS_INTERNAL_ERROR;
 134                 break;
 135         }
 136
 137 failed:
 138         return smbcli_request_destroy(req);
 139 }
 140
 141 /****************************************************************************
 142  Send a tconX (sync interface)
 143 ****************************************************************************/
 144 NTSTATUS smb_raw_tcon(struct smbcli_tree *tree, TALLOC_CTX *mem_ctx,
 145                       union smb_tcon *parms)
 146 {
 147         struct smbcli_request *req = smb_raw_tcon_send(tree, parms);
 148         return smb_raw_tcon_recv(req, mem_ctx, parms);
 149 }
 150
 151
 152 /****************************************************************************
 153  Send a tree disconnect.
 154 ****************************************************************************/
 155 NTSTATUS smb_tree_disconnect(struct smbcli_tree *tree)
 156 {
 157         struct smbcli_request *req;
 158
 159         if (!tree) return NT_STATUS_OK;
 160         req = smbcli_request_setup(tree, SMBtdis, 0, 0);
 161
 162         if (smbcli_request_send(req)) {
 163                 (void) smbcli_request_receive(req);
 164         }
 165         return smbcli_request_destroy(req);
 166 }
 167
 168
 169 /*
 170   a convenient function to establish a smbcli_tree from scratch
 171 */
 172 NTSTATUS smbcli_tree_full_connection(TALLOC_CTX *parent_ctx,
 173                                      struct smbcli_tree **ret_tree,
 174                                      const char *dest_host, const char **dest_ports,
 175                                      const char *service, const char *service_type,
 176                                      struct cli_credentials *credentials,
 177                                      struct event_context *ev)
 178 {
 179         struct smb_composite_connect io;
 180         NTSTATUS status;
 181         TALLOC_CTX *tmp_ctx = talloc_new(parent_ctx);
 182         if (!tmp_ctx) {
 183                 return NT_STATUS_NO_MEMORY;
 184         }
 185
 186         io.in.dest_host = dest_host;
 187         io.in.dest_ports = dest_ports;
 188         io.in.called_name = strupper_talloc(tmp_ctx, dest_host);
 189         io.in.service = service;
 190         io.in.service_type = service_type;
 191         io.in.credentials = credentials;
 192         io.in.fallback_to_anonymous = false;
 193         io.in.workgroup = lp_workgroup(global_loadparm);
 194
 195         status = smb_composite_connect(&io, parent_ctx, ev);
 196         if (NT_STATUS_IS_OK(status)) {
 197                 *ret_tree = io.out.tree;
 198         }
 199         talloc_free(tmp_ctx);
 200         return status;
 201 }