Add m-esr52 at 52.6.0

1 files changed, 118 insertions, 0 deletions

diff --git a/security/nss/lib/util/secitem.h b/security/nss/lib/util/secitem.h
new file mode 100644
index 000000000..5b9d0e174
--- /dev/null
+++ b/security/nss/lib/util/secitem.h
@@ -0,0 +1,118 @@
+/* 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_ */