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/*
* Copyright (C) 2007 Stef Walter
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef CKCAPI_OBJECT_H
#define CKCAPI_OBJECT_H
#include "ckcapi.h"
/* Debug print something about an object */
#define DBGO(obj, msg) \
ckcapi_debug("O%d: %s", (obj) ? (obj)->id : 0, (msg))
/* A function to load data for an object */
typedef CK_RV (*CkCapiLoadData)(CkCapiSession* sess, struct _CkCapiObject* obj,
CkCapiObjectData** objdata);
/* A function to free some data */
typedef void (*CkCapiRelease)(void* data);
/* Object functions */
typedef struct _CkCapiObjectVtable
{
CkCapiLoadData load_data;
CkCapiRelease release;
}
CkCapiObjectVtable;
/* Represents a object we've seen */
struct _CkCapiObject
{
CK_OBJECT_HANDLE id;
CK_SLOT_ID slot;
CK_SESSION_HANDLE session;
const CkCapiObjectVtable* obj_funcs;
void* unique_key;
size_t unique_len;
};
/* A function to get an attribute from ObjectData */
typedef CK_RV (*CkCapiGetAttribute)(CkCapiObjectData* objdata, CK_ATTRIBUTE_PTR attr);
/* Object data functions */
typedef struct _CkCapiObjectDataVtable
{
CkCapiGetAttribute get_bool;
CkCapiGetAttribute get_ulong;
CkCapiGetAttribute get_bytes;
CkCapiGetAttribute get_date;
CkCapiRelease release;
}
CkCapiObjectDataVtable;
/*
* Base class for object data. Different types of
* objects extend this with more detailed data
*/
struct _CkCapiObjectData
{
CK_OBJECT_HANDLE object;
const CkCapiObjectDataVtable* data_funcs;
};
/* Match object data against all the given match attributes */
CK_BBOOL ckcapi_object_data_match (CkCapiObjectData* objdata,
CK_ATTRIBUTE_PTR matches, CK_ULONG count);
/* Match a single attribute against object data */
CK_BBOOL ckcapi_object_data_match_attr (CkCapiObjectData* objdata,
CK_ATTRIBUTE_PTR match);
/* Get a bunch of attributes from object data */
CK_RV ckcapi_object_data_get_attrs (CkCapiObjectData* objdata, CK_ATTRIBUTE_PTR attrs,
CK_ULONG count);
/* Debug print something about an object data */
#define DBGOD(objdata, msg) \
ckcapi_debug("O%d: %s", (objdata) ? (objdata)->obj : 0, (msg))
/*
* Each object has a unique key which guarantees that we're
* not loading the same objects over and over again.
* Usually these are contiguous members of a struct. These
* macros help calculate the address and length of such a
* unique key
*/
/* The unique key starts at the address of the starting struct member */
#define UNIQUE_KEY_AT(obj, mem) \
(void*)(&((obj->mem)))
/* Calculates key length between first and last struct members */
#define UNIQUE_KEY_LEN(obj, first, last) \
UNIQUE_KEY_VAR_LEN(obj, first, last, sizeof(obj->last))
/* Calcs key len between first and a certain num of bytes past last struct member */
#define UNIQUE_KEY_VAR_LEN(obj, first, last, len) \
((((char*)&((obj->last))) - ((char*)&((obj->first)))) + (len))
/* Used internally to have a unique id for different object types */
enum
{
OBJECT_CERT = 1,
OBJECT_BUILTIN = 2,
OBJECT_TRUST = 3
};
#endif /* CKCAPI_OBJECT_H */
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