dlls/rsaenh/handle.h

   1 /*
   2  * dlls/rsaenh/handle.h
   3  * Support code to manage HANDLE tables.
   4  *
   5  * Copyright 1998 Alexandre Julliard
   6  * Copyright 2002-2004 Mike McCormack for CodeWeavers
   7  * Copyright 2004 Michael Jung
   8  *
   9  * This library is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2.1 of the License, or (at your option) any later version.
  13  *
  14  * This library 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 GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with this library; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  22  */
  23
  24 #ifndef __WINE_HANDLE_H
  25 #define __WINE_HANDLE_H
  26
  27 #include "wincrypt.h"
  28
  29 #ifdef __cplusplus
  30 extern "C" {
  31 #endif
  32
  33 #define TABLE_SIZE_INCREMENT 32
  34
  35 struct tagOBJECTHDR;
  36 typedef struct tagOBJECTHDR OBJECTHDR;
  37 typedef void (*DESTRUCTOR)(OBJECTHDR *object);
  38 struct tagOBJECTHDR
  39 {
  40     DWORD       dwType;
  41     LONG        refcount;
  42     DESTRUCTOR  destructor;
  43 };
  44
  45 struct handle_table_entry
  46 {
  47     OBJECTHDR    *pObject;
  48     unsigned int iNextFree;
  49 };
  50
  51 struct handle_table
  52 {
  53     unsigned int     iEntries;
  54     unsigned int     iFirstFree;
  55     struct handle_table_entry *paEntries;
  56     CRITICAL_SECTION mutex;
  57 };
  58
  59 void init_handle_table   (struct handle_table *lpTable);
  60 void destroy_handle_table(struct handle_table *lpTable);
  61 int  release_handle      (struct handle_table *lpTable, HCRYPTKEY handle, DWORD dwType);
  62 int  copy_handle         (struct handle_table *lpTable, HCRYPTKEY handle, DWORD dwType, HCRYPTKEY *copy);
  63 int  lookup_handle       (struct handle_table *lpTable, HCRYPTKEY handle, DWORD dwType, OBJECTHDR **lplpObject);
  64 int  is_valid_handle     (struct handle_table *lpTable, HCRYPTKEY handle, DWORD dwType);
  65
  66 HCRYPTKEY new_object     (struct handle_table *lpTable, size_t cbSize, DWORD dwType, DESTRUCTOR destructor,
  67                            OBJECTHDR **ppObject);
  68
  69 #ifdef __cplusplus
  70 }
  71 #endif
  72
  73 #endif /* __WINE_HANDLE_H */