diff options
Diffstat (limited to 'security/nss/lib/util/secitem.c')
| -rw-r--r-- | security/nss/lib/util/secitem.c | 246 |
1 files changed, 246 insertions, 0 deletions
diff --git a/security/nss/lib/util/secitem.c b/security/nss/lib/util/secitem.c new file mode 100644 index 000000000..411078bee --- /dev/null +++ b/security/nss/lib/util/secitem.c @@ -0,0 +1,246 @@ +/* + * 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 Netscape are + * Copyright (C) 1994-2000 Netscape Communications Corporation. All + * Rights Reserved. + * + * Contributor(s): + * + * Alternatively, the contents of this file may be used under the + * terms of the GNU General Public License Version 2 or later (the + * "GPL"), in which case the provisions of the GPL are applicable + * instead of those above. If you wish to allow use of your + * version of this file only under the terms of the GPL and not to + * allow others to use your version of this file under the MPL, + * indicate your decision by deleting the provisions above and + * replace them with the notice and other provisions required by + * the GPL. If you do not delete the provisions above, a recipient + * may use your version of this file under either the MPL or the + * GPL. + */ + +/* + * Support routines for SECItem data structure. + * + * $Id$ + */ + +#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; + + 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 (arena != NULL) { + PORT_ArenaUnmark(arena, mark); + } + return(result); + +loser: + if (arena != NULL) { + 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; + + 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 (SECITEM_CompareItem(a, b) == SECEqual) + return PR_TRUE; + + return PR_FALSE; +} + +SECItem * +SECITEM_DupItem(const SECItem *from) +{ + SECItem *to; + + if ( from == NULL ) { + return(NULL); + } + + to = (SECItem *)PORT_Alloc(sizeof(SECItem)); + if ( to == NULL ) { + return(NULL); + } + + to->data = (unsigned char *)PORT_Alloc(from->len); + if ( to->data == NULL ) { + PORT_Free(to); + return(NULL); + } + + to->len = from->len; + PORT_Memcpy(to->data, from->data, to->len); + + return(to); +} + +SECStatus +SECITEM_CopyItem(PRArenaPool *arena, SECItem *to, const SECItem *from) +{ + 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)); + } + } +} + +char * +BTOA_ConvertItemToAscii (SECItem *isrc) +{ + return BTOA_DataToAscii (isrc->data, isrc->len); +} |