зеркало из https://github.com/mozilla/gecko-dev.git
314 строки
7.3 KiB
C
314 строки
7.3 KiB
C
/* ***** BEGIN LICENSE BLOCK *****
|
|
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
|
|
*
|
|
* The contents of this file are subject to the Mozilla Public License Version
|
|
* 1.1 (the "License"); you may not use this file except in compliance with
|
|
* the License. You may obtain a copy of the License at
|
|
* http://www.mozilla.org/MPL/
|
|
*
|
|
* Software distributed under the License is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
|
* for the specific language governing rights and limitations under the
|
|
* License.
|
|
*
|
|
* The Original Code is the Netscape security libraries.
|
|
*
|
|
* The Initial Developer of the Original Code is
|
|
* Netscape Communications Corporation.
|
|
* Portions created by the Initial Developer are Copyright (C) 1994-2000
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
*
|
|
* Alternatively, the contents of this file may be used under the terms of
|
|
* either the GNU General Public License Version 2 or later (the "GPL"), or
|
|
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
|
* in which case the provisions of the GPL or the LGPL are applicable instead
|
|
* of those above. If you wish to allow use of your version of this file only
|
|
* under the terms of either the GPL or the LGPL, and not to allow others to
|
|
* use your version of this file under the terms of the MPL, indicate your
|
|
* decision by deleting the provisions above and replace them with the notice
|
|
* and other provisions required by the GPL or the LGPL. If you do not delete
|
|
* the provisions above, a recipient may use your version of this file under
|
|
* the terms of any one of the MPL, the GPL or the LGPL.
|
|
*
|
|
* ***** END LICENSE BLOCK ***** */
|
|
|
|
/*
|
|
* Support routines for SECItem data structure.
|
|
*
|
|
* $Id: secitem.c,v 1.11 2004/04/25 15:03:18 gerv%gerv.net Exp $
|
|
*/
|
|
|
|
#include "seccomon.h"
|
|
#include "secitem.h"
|
|
#include "base64.h"
|
|
#include "secerr.h"
|
|
|
|
SECItem *
|
|
SECITEM_AllocItem(PRArenaPool *arena, SECItem *item, unsigned int len)
|
|
{
|
|
SECItem *result = NULL;
|
|
void *mark = NULL;
|
|
|
|
if (arena != NULL) {
|
|
mark = PORT_ArenaMark(arena);
|
|
}
|
|
|
|
if (item == NULL) {
|
|
if (arena != NULL) {
|
|
result = PORT_ArenaZAlloc(arena, sizeof(SECItem));
|
|
} else {
|
|
result = PORT_ZAlloc(sizeof(SECItem));
|
|
}
|
|
if (result == NULL) {
|
|
goto loser;
|
|
}
|
|
} else {
|
|
PORT_Assert(item->data == NULL);
|
|
result = item;
|
|
}
|
|
|
|
result->len = len;
|
|
if (len) {
|
|
if (arena != NULL) {
|
|
result->data = PORT_ArenaAlloc(arena, len);
|
|
} else {
|
|
result->data = PORT_Alloc(len);
|
|
}
|
|
}
|
|
|
|
if (mark) {
|
|
PORT_ArenaUnmark(arena, mark);
|
|
}
|
|
return(result);
|
|
|
|
loser:
|
|
if ( arena != NULL ) {
|
|
if (mark) {
|
|
PORT_ArenaRelease(arena, mark);
|
|
}
|
|
if (item != NULL) {
|
|
item->data = NULL;
|
|
item->len = 0;
|
|
}
|
|
} else {
|
|
if (result != NULL) {
|
|
SECITEM_FreeItem(result, (item == NULL) ? PR_TRUE : PR_FALSE);
|
|
}
|
|
}
|
|
return(NULL);
|
|
}
|
|
|
|
SECStatus
|
|
SECITEM_ReallocItem(PRArenaPool *arena, SECItem *item, unsigned int oldlen,
|
|
unsigned int newlen)
|
|
{
|
|
PORT_Assert(item != NULL);
|
|
if (item == NULL) {
|
|
/* XXX Set error. But to what? */
|
|
return SECFailure;
|
|
}
|
|
|
|
/*
|
|
* If no old length, degenerate to just plain alloc.
|
|
*/
|
|
if (oldlen == 0) {
|
|
PORT_Assert(item->data == NULL || item->len == 0);
|
|
if (newlen == 0) {
|
|
/* Nothing to do. Weird, but not a failure. */
|
|
return SECSuccess;
|
|
}
|
|
item->len = newlen;
|
|
if (arena != NULL) {
|
|
item->data = PORT_ArenaAlloc(arena, newlen);
|
|
} else {
|
|
item->data = PORT_Alloc(newlen);
|
|
}
|
|
} else {
|
|
if (arena != NULL) {
|
|
item->data = PORT_ArenaGrow(arena, item->data, oldlen, newlen);
|
|
} else {
|
|
item->data = PORT_Realloc(item->data, newlen);
|
|
}
|
|
}
|
|
|
|
if (item->data == NULL) {
|
|
return SECFailure;
|
|
}
|
|
|
|
return SECSuccess;
|
|
}
|
|
|
|
SECComparison
|
|
SECITEM_CompareItem(const SECItem *a, const SECItem *b)
|
|
{
|
|
unsigned m;
|
|
SECComparison rv;
|
|
|
|
if (!a || !a->len || !a->data)
|
|
return (!b || !b->len || !b->data) ? SECEqual : SECLessThan;
|
|
if (!b || !b->len || !b->data)
|
|
return SECGreaterThan;
|
|
|
|
m = ( ( a->len < b->len ) ? a->len : b->len );
|
|
|
|
rv = (SECComparison) PORT_Memcmp(a->data, b->data, m);
|
|
if (rv) {
|
|
return rv;
|
|
}
|
|
if (a->len < b->len) {
|
|
return SECLessThan;
|
|
}
|
|
if (a->len == b->len) {
|
|
return SECEqual;
|
|
}
|
|
return SECGreaterThan;
|
|
}
|
|
|
|
PRBool
|
|
SECITEM_ItemsAreEqual(const SECItem *a, const SECItem *b)
|
|
{
|
|
if (a->len != b->len)
|
|
return PR_FALSE;
|
|
if (!a->len)
|
|
return PR_TRUE;
|
|
if (!a->data || !b->data) {
|
|
/* avoid null pointer crash. */
|
|
return (PRBool)(a->data == b->data);
|
|
}
|
|
return (PRBool)!PORT_Memcmp(a->data, b->data, a->len);
|
|
}
|
|
|
|
SECItem *
|
|
SECITEM_DupItem(const SECItem *from)
|
|
{
|
|
return SECITEM_ArenaDupItem(NULL, from);
|
|
}
|
|
|
|
SECItem *
|
|
SECITEM_ArenaDupItem(PRArenaPool *arena, const SECItem *from)
|
|
{
|
|
SECItem *to;
|
|
|
|
if ( from == NULL ) {
|
|
return(NULL);
|
|
}
|
|
|
|
if ( arena != NULL ) {
|
|
to = (SECItem *)PORT_ArenaAlloc(arena, sizeof(SECItem));
|
|
} else {
|
|
to = (SECItem *)PORT_Alloc(sizeof(SECItem));
|
|
}
|
|
if ( to == NULL ) {
|
|
return(NULL);
|
|
}
|
|
|
|
if ( arena != NULL ) {
|
|
to->data = (unsigned char *)PORT_ArenaAlloc(arena, from->len);
|
|
} else {
|
|
to->data = (unsigned char *)PORT_Alloc(from->len);
|
|
}
|
|
if ( to->data == NULL ) {
|
|
PORT_Free(to);
|
|
return(NULL);
|
|
}
|
|
|
|
to->len = from->len;
|
|
to->type = from->type;
|
|
if ( to->len ) {
|
|
PORT_Memcpy(to->data, from->data, to->len);
|
|
}
|
|
|
|
return(to);
|
|
}
|
|
|
|
SECStatus
|
|
SECITEM_CopyItem(PRArenaPool *arena, SECItem *to, const SECItem *from)
|
|
{
|
|
to->type = from->type;
|
|
if (from->data && from->len) {
|
|
if ( arena ) {
|
|
to->data = (unsigned char*) PORT_ArenaAlloc(arena, from->len);
|
|
} else {
|
|
to->data = (unsigned char*) PORT_Alloc(from->len);
|
|
}
|
|
|
|
if (!to->data) {
|
|
return SECFailure;
|
|
}
|
|
PORT_Memcpy(to->data, from->data, from->len);
|
|
to->len = from->len;
|
|
} else {
|
|
to->data = 0;
|
|
to->len = 0;
|
|
}
|
|
return SECSuccess;
|
|
}
|
|
|
|
void
|
|
SECITEM_FreeItem(SECItem *zap, PRBool freeit)
|
|
{
|
|
if (zap) {
|
|
PORT_Free(zap->data);
|
|
zap->data = 0;
|
|
zap->len = 0;
|
|
if (freeit) {
|
|
PORT_Free(zap);
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
SECITEM_ZfreeItem(SECItem *zap, PRBool freeit)
|
|
{
|
|
if (zap) {
|
|
PORT_ZFree(zap->data, zap->len);
|
|
zap->data = 0;
|
|
zap->len = 0;
|
|
if (freeit) {
|
|
PORT_ZFree(zap, sizeof(SECItem));
|
|
}
|
|
}
|
|
}
|
|
/* these reroutines were taken from pkix oid.c, which is supposed to
|
|
* replace this file some day */
|
|
/*
|
|
* This is the hash function. We simply XOR the encoded form with
|
|
* itself in sizeof(PLHashNumber)-byte chunks. Improving this
|
|
* routine is left as an excercise for the more mathematically
|
|
* inclined student.
|
|
*/
|
|
PLHashNumber PR_CALLBACK
|
|
SECITEM_Hash ( const void *key)
|
|
{
|
|
const SECItem *item = (const SECItem *)key;
|
|
PLHashNumber rv = 0;
|
|
|
|
PRUint8 *data = (PRUint8 *)item->data;
|
|
PRUint32 i;
|
|
PRUint8 *rvc = (PRUint8 *)&rv;
|
|
|
|
for( i = 0; i < item->len; i++ ) {
|
|
rvc[ i % sizeof(rv) ] ^= *data;
|
|
data++;
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
/*
|
|
* This is the key-compare function. It simply does a lexical
|
|
* comparison on the item data. This does not result in
|
|
* quite the same ordering as the "sequence of numbers" order,
|
|
* but heck it's only used internally by the hash table anyway.
|
|
*/
|
|
PRIntn PR_CALLBACK
|
|
SECITEM_HashCompare ( const void *k1, const void *k2)
|
|
{
|
|
const SECItem *i1 = (const SECItem *)k1;
|
|
const SECItem *i2 = (const SECItem *)k2;
|
|
|
|
return SECITEM_ItemsAreEqual(i1,i2);
|
|
}
|