source4/rpc_server/srvsvc/srvsvc_ntvfs.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    srvsvc pipe ntvfs helper functions
   5
   6    Copyright (C) Stefan (metze) Metzmacher 2006
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 */
  21 #include "includes.h"
  22 #include "ntvfs/ntvfs.h"
  23 #include "rpc_server/dcerpc_server.h"
  24 #include "param/param.h"
  25
  26 struct srvsvc_ntvfs_ctx {
  27         struct ntvfs_context *ntvfs;
  28 };
  29
  30 static int srvsvc_ntvfs_ctx_destructor(struct srvsvc_ntvfs_ctx *c)
  31 {
  32         ntvfs_disconnect(c->ntvfs);
  33         return 0;
  34 }
  35
  36 NTSTATUS srvsvc_create_ntvfs_context(struct dcesrv_call_state *dce_call,
  37                                      TALLOC_CTX *mem_ctx,
  38                                      const char *share,
  39                                      struct ntvfs_context **_ntvfs)
  40 {
  41         NTSTATUS status;
  42         struct srvsvc_ntvfs_ctx *c;
  43         struct ntvfs_request *ntvfs_req;
  44         enum ntvfs_type type;
  45         struct share_context *sctx;
  46         struct share_config *scfg;
  47         const char *sharetype;
  48         union smb_tcon tcon;
  49         const struct tsocket_address *local_address;
  50         const struct tsocket_address *remote_address;
  51
  52         status = share_get_context_by_name(mem_ctx, lp_share_backend(dce_call->conn->dce_ctx->lp_ctx), dce_call->event_ctx, dce_call->conn->dce_ctx->lp_ctx, &sctx);
  53         if (!NT_STATUS_IS_OK(status)) {
  54                 return status;
  55         }
  56
  57         status = share_get_config(mem_ctx, sctx, share, &scfg);
  58         if (!NT_STATUS_IS_OK(status)) {
  59                 DEBUG(0,("srvsvc_create_ntvfs_context: couldn't find service %s\n", share));
  60                 return status;
  61         }
  62
  63 #if 0 /* TODO: fix access cecking */
  64         if (!socket_check_access(dce_call->connection->socket,
  65                                  scfg->name,
  66                                  share_string_list_option(scfg, SHARE_HOSTS_ALLOW),
  67                                  share_string_list_option(scfg, SHARE_HOSTS_DENY))) {
  68                 return NT_STATUS_ACCESS_DENIED;
  69         }
  70 #endif
  71
  72         /* work out what sort of connection this is */
  73         sharetype = share_string_option(scfg, SHARE_TYPE, SHARE_TYPE_DEFAULT);
  74         if (sharetype && strcmp(sharetype, "IPC") == 0) {
  75                 type = NTVFS_IPC;
  76         } else if (sharetype && strcmp(sharetype, "PRINTER")) {
  77                 type = NTVFS_PRINT;
  78         } else {
  79                 type = NTVFS_DISK;
  80         }
  81
  82         c = talloc(mem_ctx, struct srvsvc_ntvfs_ctx);
  83         NT_STATUS_HAVE_NO_MEMORY(c);
  84
  85         /* init ntvfs function pointers */
  86         status = ntvfs_init_connection(c, scfg, type,
  87                                        PROTOCOL_NT1,
  88                                        0,/* ntvfs_client_caps */
  89                                        dce_call->event_ctx,
  90                                        dce_call->conn->msg_ctx,
  91                                        dce_call->conn->dce_ctx->lp_ctx,
  92                                        dce_call->conn->server_id,
  93                                        &c->ntvfs);
  94         if (!NT_STATUS_IS_OK(status)) {
  95                 DEBUG(0, ("srvsvc_create_ntvfs_context: ntvfs_init_connection failed for service %s\n",
  96                           scfg->name));
  97                 return status;
  98         }
  99         talloc_set_destructor(c, srvsvc_ntvfs_ctx_destructor);
 100
 101         /*
 102          * NOTE: we only set the addr callbacks as we're not interesseted in oplocks or in getting file handles
 103          */
 104         local_address = dcesrv_connection_get_local_address(dce_call->conn);
 105         remote_address = dcesrv_connection_get_remote_address(dce_call->conn);
 106         status = ntvfs_set_addresses(c->ntvfs, local_address, remote_address);
 107         if (!NT_STATUS_IS_OK(status)) {
 108                 DEBUG(0,("srvsvc_create_ntvfs_context: NTVFS failed to set the addr callbacks!\n"));
 109                 return status;
 110         }
 111
 112         ntvfs_req = ntvfs_request_create(c->ntvfs, mem_ctx,
 113                                          dce_call->conn->auth_state.session_info,
 114                                          0, /* TODO: fill in PID */
 115                                          dce_call->time,
 116                                          NULL, NULL, 0);
 117         NT_STATUS_HAVE_NO_MEMORY(ntvfs_req);
 118
 119         /* Invoke NTVFS connection hook */
 120         tcon.tcon.level = RAW_TCON_TCON;
 121         ZERO_STRUCT(tcon.tcon.in);
 122         tcon.tcon.in.service = scfg->name;
 123         status = ntvfs_connect(ntvfs_req, &tcon);
 124         if (!NT_STATUS_IS_OK(status)) {
 125                 DEBUG(0,("srvsvc_create_ntvfs_context: NTVFS ntvfs_connect() failed!\n"));
 126                 return status;
 127         }
 128
 129         *_ntvfs = c->ntvfs;
 130         return NT_STATUS_OK;
 131 }