36 lines
1015 B
C
36 lines
1015 B
C
// 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;
|
|
}
|