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 socket_address *srvsvc_get_my_addr(void *p, TALLOC_CTX *mem_ctx)
  27 {
  28         struct dcesrv_connection *conn = talloc_get_type(p, struct dcesrv_connection);
  29         return dcesrv_connection_get_my_addr(conn, mem_ctx);
  30 }
  31
  32 struct socket_address *srvsvc_get_peer_addr(void *p, TALLOC_CTX *mem_ctx)
  33 {
  34         struct dcesrv_connection *conn = talloc_get_type(p, struct dcesrv_connection);
  35         return dcesrv_connection_get_peer_addr(conn, mem_ctx);
  36 }
  37
  38 struct srvsvc_ntvfs_ctx {
  39         struct ntvfs_context *ntvfs;
  40 };
  41
  42 static int srvsvc_ntvfs_ctx_destructor(struct srvsvc_ntvfs_ctx *c)
  43 {
  44         ntvfs_disconnect(c->ntvfs);
  45         return 0;
  46 }
  47
  48 NTSTATUS srvsvc_create_ntvfs_context(struct dcesrv_call_state *dce_call,
  49                                      TALLOC_CTX *mem_ctx,
  50                                      const char *share,
  51                                      struct ntvfs_context **_ntvfs)
  52 {
  53         NTSTATUS status;
  54         struct srvsvc_ntvfs_ctx *c;
  55         struct ntvfs_request *ntvfs_req;
  56         enum ntvfs_type type;
  57         struct share_context *sctx;
  58         struct share_config *scfg;
  59         const char *sharetype;
  60         union smb_tcon tcon;
  61
  62         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);
  63         if (!NT_STATUS_IS_OK(status)) {
  64                 return status;
  65         }
  66
  67         status = share_get_config(mem_ctx, sctx, share, &scfg);
  68         if (!NT_STATUS_IS_OK(status)) {
  69                 DEBUG(0,("srvsvc_create_ntvfs_context: couldn't find service %s\n", share));
  70                 return status;
  71         }
  72
  73 #if 0 /* TODO: fix access cecking */
  74         if (!socket_check_access(dce_call->connection->socket,
  75                                  scfg->name,
  76                                  share_string_list_option(scfg, SHARE_HOSTS_ALLOW),
  77                                  share_string_list_option(scfg, SHARE_HOSTS_DENY))) {
  78                 return NT_STATUS_ACCESS_DENIED;
  79         }
  80 #endif
  81
  82         /* work out what sort of connection this is */
  83         sharetype = share_string_option(scfg, SHARE_TYPE, SHARE_TYPE_DEFAULT);
  84         if (sharetype && strcmp(sharetype, "IPC") == 0) {
  85                 type = NTVFS_IPC;
  86         } else if (sharetype && strcmp(sharetype, "PRINTER")) {
  87                 type = NTVFS_PRINT;
  88         } else {
  89                 type = NTVFS_DISK;
  90         }
  91
  92         c = talloc(mem_ctx, struct srvsvc_ntvfs_ctx);
  93         NT_STATUS_HAVE_NO_MEMORY(c);
  94
  95         /* init ntvfs function pointers */
  96         status = ntvfs_init_connection(c, scfg, type,
  97                                        PROTOCOL_NT1,
  98                                        0,/* ntvfs_client_caps */
  99                                        dce_call->event_ctx,
 100                                        dce_call->conn->msg_ctx,
 101                                        dce_call->conn->dce_ctx->lp_ctx,
 102                                        dce_call->conn->server_id,
 103                                        &c->ntvfs);
 104         if (!NT_STATUS_IS_OK(status)) {
 105                 DEBUG(0, ("srvsvc_create_ntvfs_context: ntvfs_init_connection failed for service %s\n",
 106                           scfg->name));
 107                 return status;
 108         }
 109         talloc_set_destructor(c, srvsvc_ntvfs_ctx_destructor);
 110
 111         /*
 112          * NOTE: we only set the addr callbacks as we're not interesseted in oplocks or in getting file handles
 113          */
 114         status = ntvfs_set_addr_callbacks(c->ntvfs, srvsvc_get_my_addr, srvsvc_get_peer_addr, dce_call->conn);
 115         if (!NT_STATUS_IS_OK(status)) {
 116                 DEBUG(0,("srvsvc_create_ntvfs_context: NTVFS failed to set the addr callbacks!\n"));
 117                 return status;
 118         }
 119
 120         ntvfs_req = ntvfs_request_create(c->ntvfs, mem_ctx,
 121                                          dce_call->conn->auth_state.session_info,
 122                                          0, /* TODO: fill in PID */
 123                                          dce_call->time,
 124                                          NULL, NULL, 0);
 125         NT_STATUS_HAVE_NO_MEMORY(ntvfs_req);
 126
 127         /* Invoke NTVFS connection hook */
 128         tcon.tcon.level = RAW_TCON_TCON;
 129         ZERO_STRUCT(tcon.tcon.in);
 130         tcon.tcon.in.service = share;
 131         status = ntvfs_connect(ntvfs_req, &tcon);
 132         if (!NT_STATUS_IS_OK(status)) {
 133                 DEBUG(0,("srvsvc_create_ntvfs_context: NTVFS ntvfs_connect() failed!\n"));
 134                 return status;
 135         }
 136
 137         *_ntvfs = c->ntvfs;
 138         return NT_STATUS_OK;
 139 }