Add m-esr52 at 52.6.0

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 000000000..a1bb802ed
--- /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);
+}