source4/rpc_server/common/common.h

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    common macros for the dcerpc server interfaces
   5
   6    Copyright (C) Stefan (metze) Metzmacher 2004
   7    Copyright (C) Andrew Tridgell 2004
   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 2 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, write to the Free Software
  21    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  22 */
  23
  24 #define NTSTATUS_TALLOC_CHECK(x) do {\
  25         if (!(x)) return NT_STATUS_NO_MEMORY;\
  26 } while (0)
  27
  28 #define WERR_TALLOC_CHECK(x) do {\
  29         if (!(x)) return WERR_NOMEM;\
  30 } while (0)
  31
  32 /* a useful macro for generating a RPC fault in the backend code */
  33 #define DCESRV_FAULT(code) do { \
  34         dce_call->fault_code = code; \
  35         return r->out.result; \
  36 } while(0)
  37
  38 /* a useful macro for checking the validity of a dcerpc policy handle
  39    and giving the right fault code if invalid */
  40 #define DCESRV_CHECK_HANDLE(h) do {if (!(h)) DCESRV_FAULT(DCERPC_FAULT_CONTEXT_MISMATCH); } while (0)
  41
  42 /* this checks for a valid policy handle, and gives a fault if an
  43    invalid handle or retval if the handle is of the
  44    wrong type */
  45 #define DCESRV_PULL_HANDLE_RETVAL(h, inhandle, t, retval) do { \
  46         (h) = dcesrv_handle_fetch(dce_call->context, (inhandle), DCESRV_HANDLE_ANY); \
  47         DCESRV_CHECK_HANDLE(h); \
  48         if ((t) != DCESRV_HANDLE_ANY && (h)->wire_handle.handle_type != (t)) { \
  49                 return retval; \
  50         } \
  51 } while (0)
  52
  53 /* this checks for a valid policy handle and gives a dcerpc fault
  54    if its the wrong type of handle */
  55 #define DCESRV_PULL_HANDLE_FAULT(h, inhandle, t) do { \
  56         (h) = dcesrv_handle_fetch(dce_call->context, (inhandle), t); \
  57         DCESRV_CHECK_HANDLE(h); \
  58 } while (0)
  59
  60 #define DCESRV_PULL_HANDLE(h, inhandle, t) DCESRV_PULL_HANDLE_RETVAL(h, inhandle, t, NT_STATUS_INVALID_HANDLE)
  61 #define DCESRV_PULL_HANDLE_WERR(h, inhandle, t) DCESRV_PULL_HANDLE_RETVAL(h, inhandle, t, WERR_BADFID)