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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef _SECITEM_H_
#define _SECITEM_H_
#include "utilrename.h"
/*
* secitem.h - public data structures and prototypes for handling
* SECItems
*/
#include "plarena.h"
#include "plhash.h"
#include "seccomon.h"
SEC_BEGIN_PROTOS
/*
** Allocate an item. If "arena" is not NULL, then allocate from there,
** otherwise allocate from the heap. If "item" is not NULL, allocate
** only the data buffer for the item, not the item itself. If "len" is
** 0, do not allocate the data buffer for the item; simply set the data
** field to NULL and the len field to 0. The item structure is allocated
** zero-filled; the data buffer is not zeroed. The caller is responsible
** for initializing the type field of the item.
**
** The resulting item is returned; NULL if any error occurs.
**
** XXX This probably should take a SECItemType, but since that is mostly
** unused and our improved APIs (aka Stan) are looming, I left it out.
*/
extern SECItem *SECITEM_AllocItem(PLArenaPool *arena, SECItem *item,
unsigned int len);
/*
** This is a legacy function containing bugs. It doesn't update item->len,
** and it has other issues as described in bug 298649 and bug 298938.
** However, the function is kept unchanged for consumers that might depend
** on the broken behaviour. New code should call SECITEM_ReallocItemV2.
**
** Reallocate the data for the specified "item". If "arena" is not NULL,
** then reallocate from there, otherwise reallocate from the heap.
** In the case where oldlen is 0, the data is allocated (not reallocated).
** In any case, "item" is expected to be a valid SECItem pointer;
** SECFailure is returned if it is not. If the allocation succeeds,
** SECSuccess is returned.
*/
extern SECStatus SECITEM_ReallocItem(/* deprecated function */
PLArenaPool *arena, SECItem *item,
unsigned int oldlen, unsigned int newlen);
/*
** Reallocate the data for the specified "item". If "arena" is not NULL,
** then reallocate from there, otherwise reallocate from the heap.
** If item->data is NULL, the data is allocated (not reallocated).
** In any case, "item" is expected to be a valid SECItem pointer;
** SECFailure is returned if it is not, and the item will remain unchanged.
** If the allocation succeeds, the item is updated and SECSuccess is returned.
*/
extern SECStatus SECITEM_ReallocItemV2(PLArenaPool *arena, SECItem *item,
unsigned int newlen);
/*
** Compare two items returning the difference between them.
*/
extern SECComparison SECITEM_CompareItem(const SECItem *a, const SECItem *b);
/*
** Compare two items -- if they are the same, return true; otherwise false.
*/
extern PRBool SECITEM_ItemsAreEqual(const SECItem *a, const SECItem *b);
/*
** Copy "from" to "to"
*/
extern SECStatus SECITEM_CopyItem(PLArenaPool *arena, SECItem *to,
const SECItem *from);
/*
** Allocate an item and copy "from" into it.
*/
extern SECItem *SECITEM_DupItem(const SECItem *from);
/*
** Allocate an item and copy "from" into it. The item itself and the
** data it points to are both allocated from the arena. If arena is
** NULL, this function is equivalent to SECITEM_DupItem.
*/
extern SECItem *SECITEM_ArenaDupItem(PLArenaPool *arena, const SECItem *from);
/*
** Free "zap". If freeit is PR_TRUE then "zap" itself is freed.
*/
extern void SECITEM_FreeItem(SECItem *zap, PRBool freeit);
/*
** Zero and then free "zap". If freeit is PR_TRUE then "zap" itself is freed.
*/
extern void SECITEM_ZfreeItem(SECItem *zap, PRBool freeit);
PLHashNumber PR_CALLBACK SECITEM_Hash(const void *key);
PRIntn PR_CALLBACK SECITEM_HashCompare(const void *k1, const void *k2);
extern SECItemArray *SECITEM_AllocArray(PLArenaPool *arena,
SECItemArray *array,
unsigned int len);
extern SECItemArray *SECITEM_DupArray(PLArenaPool *arena,
const SECItemArray *from);
extern void SECITEM_FreeArray(SECItemArray *array, PRBool freeit);
extern void SECITEM_ZfreeArray(SECItemArray *array, PRBool freeit);
SEC_END_PROTOS
#endif /* _SECITEM_H_ */
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