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- // SPDX-License-Identifier: MIT
- /*
- * Copyright (C) 2016 The Android Open Source Project
- */
- #include "avb_footer.h"
- #include "avb_util.h"
- bool avb_footer_validate_and_byteswap(const AvbFooter* src, AvbFooter* dest) {
- avb_memcpy(dest, src, sizeof(AvbFooter));
- dest->version_major = avb_be32toh(dest->version_major);
- dest->version_minor = avb_be32toh(dest->version_minor);
- dest->original_image_size = avb_be64toh(dest->original_image_size);
- dest->vbmeta_offset = avb_be64toh(dest->vbmeta_offset);
- dest->vbmeta_size = avb_be64toh(dest->vbmeta_size);
- /* Check that magic is correct. */
- if (avb_safe_memcmp(dest->magic, AVB_FOOTER_MAGIC, AVB_FOOTER_MAGIC_LEN) !=
- 0) {
- avb_error("Footer magic is incorrect.\n");
- return false;
- }
- /* Ensure we don't attempt to access any fields if the footer major
- * version is not supported.
- */
- if (dest->version_major > AVB_FOOTER_VERSION_MAJOR) {
- avb_error("No support for footer version.\n");
- return false;
- }
- return true;
- }
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