diff options
Diffstat (limited to 'security/nss/lib/base/item.c')
| -rw-r--r-- | security/nss/lib/base/item.c | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/security/nss/lib/base/item.c b/security/nss/lib/base/item.c new file mode 100644 index 0000000000..a1bb802ed6 --- /dev/null +++ b/security/nss/lib/base/item.c @@ -0,0 +1,186 @@ +/* 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/. */ + +/* + * item.c + * + * This contains some item-manipulation code. + */ + +#ifndef BASE_H +#include "base.h" +#endif /* BASE_H */ + +/* + * nssItem_Create + * + * -- fgmr comments -- + * + * The error may be one of the following values: + * NSS_ERROR_INVALID_ARENA + * NSS_ERROR_NO_MEMORY + * NSS_ERROR_ARENA_MARKED_BY_ANOTHER_THREAD + * NSS_ERROR_INVALID_POINTER + * + * Return value: + * A pointer to an NSSItem upon success + * NULL upon failure + */ + +NSS_IMPLEMENT NSSItem * +nssItem_Create(NSSArena *arenaOpt, NSSItem *rvOpt, PRUint32 length, + const void *data) +{ + NSSItem *rv = (NSSItem *)NULL; + +#ifdef DEBUG + if ((NSSArena *)NULL != arenaOpt) { + if (PR_SUCCESS != nssArena_verifyPointer(arenaOpt)) { + return (NSSItem *)NULL; + } + } + + if ((const void *)NULL == data) { + if (length > 0) { + nss_SetError(NSS_ERROR_INVALID_POINTER); + return (NSSItem *)NULL; + } + } +#endif /* DEBUG */ + + if ((NSSItem *)NULL == rvOpt) { + rv = (NSSItem *)nss_ZNEW(arenaOpt, NSSItem); + if ((NSSItem *)NULL == rv) { + goto loser; + } + } else { + rv = rvOpt; + } + + rv->size = length; + rv->data = nss_ZAlloc(arenaOpt, length); + if ((void *)NULL == rv->data) { + goto loser; + } + + if (length > 0) { + (void)nsslibc_memcpy(rv->data, data, length); + } + + return rv; + +loser: + if (rv != rvOpt) { + nss_ZFreeIf(rv); + } + + return (NSSItem *)NULL; +} + +NSS_IMPLEMENT void +nssItem_Destroy(NSSItem *item) +{ + nss_ClearErrorStack(); + + nss_ZFreeIf(item->data); + nss_ZFreeIf(item); +} + +/* + * nssItem_Duplicate + * + * -- fgmr comments -- + * + * The error may be one of the following values: + * NSS_ERROR_INVALID_ARENA + * NSS_ERROR_NO_MEMORY + * NSS_ERROR_ARENA_MARKED_BY_ANOTHER_THREAD + * NSS_ERROR_INVALID_ITEM + * + * Return value: + * A pointer to an NSSItem upon success + * NULL upon failure + */ + +NSS_IMPLEMENT NSSItem * +nssItem_Duplicate(NSSItem *obj, NSSArena *arenaOpt, NSSItem *rvOpt) +{ +#ifdef DEBUG + if ((NSSArena *)NULL != arenaOpt) { + if (PR_SUCCESS != nssArena_verifyPointer(arenaOpt)) { + return (NSSItem *)NULL; + } + } + + if ((NSSItem *)NULL == obj) { + nss_SetError(NSS_ERROR_INVALID_ITEM); + return (NSSItem *)NULL; + } +#endif /* DEBUG */ + + return nssItem_Create(arenaOpt, rvOpt, obj->size, obj->data); +} + +#ifdef DEBUG +/* + * nssItem_verifyPointer + * + * -- fgmr comments -- + * + * The error may be one of the following values: + * NSS_ERROR_INVALID_ITEM + * + * Return value: + * PR_SUCCESS upon success + * PR_FAILURE upon failure + */ + +NSS_IMPLEMENT PRStatus +nssItem_verifyPointer(const NSSItem *item) +{ + if (((const NSSItem *)NULL == item) || + (((void *)NULL == item->data) && (item->size > 0))) { + nss_SetError(NSS_ERROR_INVALID_ITEM); + return PR_FAILURE; + } + + return PR_SUCCESS; +} +#endif /* DEBUG */ + +/* + * nssItem_Equal + * + * -- fgmr comments -- + * + * The error may be one of the following values: + * NSS_ERROR_INVALID_ITEM + * + * Return value: + * PR_TRUE if the items are identical + * PR_FALSE if they aren't + * PR_FALSE upon error + */ + +NSS_IMPLEMENT PRBool +nssItem_Equal(const NSSItem *one, const NSSItem *two, PRStatus *statusOpt) +{ + if ((PRStatus *)NULL != statusOpt) { + *statusOpt = PR_SUCCESS; + } + + if (((const NSSItem *)NULL == one) && ((const NSSItem *)NULL == two)) { + return PR_TRUE; + } + + if (((const NSSItem *)NULL == one) || ((const NSSItem *)NULL == two)) { + return PR_FALSE; + } + + if (one->size != two->size) { + return PR_FALSE; + } + + return nsslibc_memequal(one->data, two->data, one->size, statusOpt); +} |