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 #include "rpc_server/srvsvc/proto.h"
  26
  27 struct srvsvc_ntvfs_ctx {
  28         struct ntvfs_context *ntvfs;
  29 };
  30
  31 static int srvsvc_ntvfs_ctx_destructor(struct srvsvc_ntvfs_ctx *c)
  32 {
  33         ntvfs_disconnect(c->ntvfs);
  34         return 0;
  35 }
  36
  37 NTSTATUS srvsvc_create_ntvfs_context(struct dcesrv_call_state *dce_call,
  38                                      TALLOC_CTX *mem_ctx,
  39                                      const char *share,
  40                                      struct ntvfs_context **_ntvfs)
  41 {
  42         NTSTATUS status;
  43         struct srvsvc_ntvfs_ctx *c;
  44         struct ntvfs_request *ntvfs_req;
  45         enum ntvfs_type type;
  46         struct share_context *sctx;
  47         struct share_config *scfg;
  48         const char *sharetype;
  49         union smb_tcon tcon;
  50         const struct tsocket_address *local_address;
  51         const struct tsocket_address *remote_address;
  52
  53         status = share_get_context_by_name(mem_ctx, lpcfg_share_backend(dce_call->conn->dce_ctx->lp_ctx), dce_call->event_ctx, dce_call->conn->dce_ctx->lp_ctx, &sctx);
  54         if (!NT_STATUS_IS_OK(status)) {
  55                 return status;
  56         }
  57
  58         status = share_get_config(mem_ctx, sctx, share, &scfg);
  59         if (!NT_STATUS_IS_OK(status)) {
  60                 DEBUG(0,("srvsvc_create_ntvfs_context: couldn't find service %s\n", share));
  61                 return status;
  62         }
  63
  64 #if 0 /* TODO: fix access cecking */
  65         if (!socket_check_access(dce_call->connection->socket,
  66                                  scfg->name,
  67                                  share_string_list_option(scfg, SHARE_HOSTS_ALLOW),
  68                                  share_string_list_option(scfg, SHARE_HOSTS_DENY))) {
  69                 return NT_STATUS_ACCESS_DENIED;
  70         }
  71 #endif
  72
  73         /* work out what sort of connection this is */
  74         sharetype = share_string_option(scfg, SHARE_TYPE, SHARE_TYPE_DEFAULT);
  75         if (sharetype && strcmp(sharetype, "IPC") == 0) {
  76                 type = NTVFS_IPC;
  77         } else if (sharetype && strcmp(sharetype, "PRINTER")) {
  78                 type = NTVFS_PRINT;
  79         } else {
  80                 type = NTVFS_DISK;
  81         }
  82
  83         c = talloc(mem_ctx, struct srvsvc_ntvfs_ctx);
  84         NT_STATUS_HAVE_NO_MEMORY(c);
  85
  86         /* init ntvfs function pointers */
  87         status = ntvfs_init_connection(c, scfg, type,
  88                                        PROTOCOL_NT1,
  89                                        0,/* ntvfs_client_caps */
  90                                        dce_call->event_ctx,
  91                                        dce_call->conn->msg_ctx,
  92                                        dce_call->conn->dce_ctx->lp_ctx,
  93                                        dce_call->conn->server_id,
  94                                        &c->ntvfs);
  95         if (!NT_STATUS_IS_OK(status)) {
  96                 DEBUG(0, ("srvsvc_create_ntvfs_context: ntvfs_init_connection failed for service %s\n",
  97                           scfg->name));
  98                 return status;
  99         }
 100         talloc_set_destructor(c, srvsvc_ntvfs_ctx_destructor);
 101
 102         /*
 103          * NOTE: we only set the addr callbacks as we're not interesseted in oplocks or in getting file handles
 104          */
 105         local_address = dcesrv_connection_get_local_address(dce_call->conn);
 106         remote_address = dcesrv_connection_get_remote_address(dce_call->conn);
 107         status = ntvfs_set_addresses(c->ntvfs, local_address, remote_address);
 108         if (!NT_STATUS_IS_OK(status)) {
 109                 DEBUG(0,("srvsvc_create_ntvfs_context: NTVFS failed to set the addr callbacks!\n"));
 110                 return status;
 111         }
 112
 113         ntvfs_req = ntvfs_request_create(c->ntvfs, mem_ctx,
 114                                          dce_call->conn->auth_state.session_info,
 115                                          0, /* TODO: fill in PID */
 116                                          dce_call->time,
 117                                          NULL, NULL, 0);
 118         NT_STATUS_HAVE_NO_MEMORY(ntvfs_req);
 119
 120         /* Invoke NTVFS connection hook */
 121         tcon.tcon.level = RAW_TCON_TCON;
 122         ZERO_STRUCT(tcon.tcon.in);
 123         tcon.tcon.in.service = scfg->name;
 124         status = ntvfs_connect(ntvfs_req, &tcon);
 125         if (!NT_STATUS_IS_OK(status)) {
 126                 DEBUG(0,("srvsvc_create_ntvfs_context: NTVFS ntvfs_connect() failed!\n"));
 127                 return status;
 128         }
 129
 130         *_ntvfs = c->ntvfs;
 131         return NT_STATUS_OK;
 132 }