dd1d27c432
1) Implicit declaration of function. 2) Possibly unitialized variables. These warnings have indicated some real problems in the code, so many changes are not just to silence the warnings, but to fix the problems. Others were inocuous, but the warnings were silenced to reduce the noise. git-svn-id: svn://10.0.0.236/trunk@109938 18797224-902f-48f8-a5cc-f745e15eee43
283 lines
6.4 KiB
C
283 lines
6.4 KiB
C
/*
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* The contents of this file are subject to the Mozilla Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is the Netscape security libraries.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1994-2000 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the
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* terms of the GNU General Public License Version 2 or later (the
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* "GPL"), in which case the provisions of the GPL are applicable
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* instead of those above. If you wish to allow use of your
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* version of this file only under the terms of the GPL and not to
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* allow others to use your version of this file under the MPL,
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* indicate your decision by deleting the provisions above and
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* replace them with the notice and other provisions required by
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* the GPL. If you do not delete the provisions above, a recipient
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* may use your version of this file under either the MPL or the
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* GPL.
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*/
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/*
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* Support routines for SECItem data structure.
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*
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* $Id: secitem.c,v 1.5 2001-12-07 01:36:25 relyea%netscape.com Exp $
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*/
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#include "seccomon.h"
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#include "secitem.h"
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#include "base64.h"
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#include "secerr.h"
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SECItem *
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SECITEM_AllocItem(PRArenaPool *arena, SECItem *item, unsigned int len)
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{
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SECItem *result = NULL;
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void *mark = NULL;
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if (arena != NULL) {
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mark = PORT_ArenaMark(arena);
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}
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if (item == NULL) {
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if (arena != NULL) {
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result = PORT_ArenaZAlloc(arena, sizeof(SECItem));
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} else {
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result = PORT_ZAlloc(sizeof(SECItem));
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}
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if (result == NULL) {
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goto loser;
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}
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} else {
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PORT_Assert(item->data == NULL);
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result = item;
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}
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result->len = len;
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if (len) {
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if (arena != NULL) {
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result->data = PORT_ArenaAlloc(arena, len);
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} else {
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result->data = PORT_Alloc(len);
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}
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}
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if (mark) {
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PORT_ArenaUnmark(arena, mark);
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}
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return(result);
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loser:
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if ( arena != NULL ) {
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if (mark) {
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PORT_ArenaRelease(arena, mark);
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}
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if (item != NULL) {
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item->data = NULL;
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item->len = 0;
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}
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} else {
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if (result != NULL) {
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SECITEM_FreeItem(result, (item == NULL) ? PR_TRUE : PR_FALSE);
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}
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}
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return(NULL);
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}
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SECStatus
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SECITEM_ReallocItem(PRArenaPool *arena, SECItem *item, unsigned int oldlen,
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unsigned int newlen)
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{
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PORT_Assert(item != NULL);
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if (item == NULL) {
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/* XXX Set error. But to what? */
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return SECFailure;
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}
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/*
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* If no old length, degenerate to just plain alloc.
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*/
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if (oldlen == 0) {
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PORT_Assert(item->data == NULL || item->len == 0);
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if (newlen == 0) {
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/* Nothing to do. Weird, but not a failure. */
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return SECSuccess;
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}
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item->len = newlen;
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if (arena != NULL) {
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item->data = PORT_ArenaAlloc(arena, newlen);
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} else {
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item->data = PORT_Alloc(newlen);
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}
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} else {
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if (arena != NULL) {
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item->data = PORT_ArenaGrow(arena, item->data, oldlen, newlen);
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} else {
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item->data = PORT_Realloc(item->data, newlen);
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}
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}
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if (item->data == NULL) {
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return SECFailure;
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}
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return SECSuccess;
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}
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SECComparison
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SECITEM_CompareItem(const SECItem *a, const SECItem *b)
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{
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unsigned m;
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SECComparison rv;
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m = ( ( a->len < b->len ) ? a->len : b->len );
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rv = (SECComparison) PORT_Memcmp(a->data, b->data, m);
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if (rv) {
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return rv;
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}
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if (a->len < b->len) {
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return SECLessThan;
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}
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if (a->len == b->len) {
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return SECEqual;
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}
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return SECGreaterThan;
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}
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PRBool
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SECITEM_ItemsAreEqual(const SECItem *a, const SECItem *b)
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{
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if (SECITEM_CompareItem(a, b) == SECEqual)
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return PR_TRUE;
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return PR_FALSE;
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}
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SECItem *
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SECITEM_DupItem(const SECItem *from)
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{
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SECItem *to;
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if ( from == NULL ) {
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return(NULL);
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}
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to = (SECItem *)PORT_Alloc(sizeof(SECItem));
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if ( to == NULL ) {
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return(NULL);
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}
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to->data = (unsigned char *)PORT_Alloc(from->len);
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if ( to->data == NULL ) {
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PORT_Free(to);
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return(NULL);
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}
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to->len = from->len;
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PORT_Memcpy(to->data, from->data, to->len);
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return(to);
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}
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SECStatus
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SECITEM_CopyItem(PRArenaPool *arena, SECItem *to, const SECItem *from)
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{
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if (from->data && from->len) {
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if ( arena ) {
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to->data = (unsigned char*) PORT_ArenaAlloc(arena, from->len);
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} else {
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to->data = (unsigned char*) PORT_Alloc(from->len);
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}
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if (!to->data) {
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return SECFailure;
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}
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PORT_Memcpy(to->data, from->data, from->len);
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to->len = from->len;
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} else {
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to->data = 0;
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to->len = 0;
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}
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return SECSuccess;
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}
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void
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SECITEM_FreeItem(SECItem *zap, PRBool freeit)
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{
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if (zap) {
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PORT_Free(zap->data);
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zap->data = 0;
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zap->len = 0;
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if (freeit) {
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PORT_Free(zap);
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}
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}
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}
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void
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SECITEM_ZfreeItem(SECItem *zap, PRBool freeit)
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{
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if (zap) {
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PORT_ZFree(zap->data, zap->len);
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zap->data = 0;
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zap->len = 0;
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if (freeit) {
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PORT_ZFree(zap, sizeof(SECItem));
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}
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}
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}
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/* these reroutines were taken from pkix oid.c, which is supposed to
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* replace this file some day */
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/*
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* This is the hash function. We simply XOR the encoded form with
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* itself in sizeof(PLHashNumber)-byte chunks. Improving this
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* routine is left as an excercise for the more mathematically
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* inclined student.
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*/
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PLHashNumber PR_CALLBACK
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SECITEM_Hash ( const void *key)
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{
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const SECItem *item = (const SECItem *)key;
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PLHashNumber rv = 0;
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PRUint8 *data = (PRUint8 *)item->data;
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PRUint32 i;
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PRUint8 *rvc = (PRUint8 *)&rv;
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for( i = 0; i < item->len; i++ ) {
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rvc[ i % sizeof(rv) ] ^= *data;
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data++;
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}
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return rv;
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}
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/*
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* This is the key-compare function. It simply does a lexical
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* comparison on the item data. This does not result in
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* quite the same ordering as the "sequence of numbers" order,
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* but heck it's only used internally by the hash table anyway.
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*/
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PRIntn PR_CALLBACK
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SECITEM_HashCompare ( const void *k1, const void *k2)
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{
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const SECItem *i1 = (const SECItem *)k1;
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const SECItem *i2 = (const SECItem *)k2;
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return SECITEM_ItemsAreEqual(i1,i2);
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}
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