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use core::{intrinsics::transmute, mem::size_of};
use crate::parameters::{Attributes, Features, MiscSelect, Xfrm};
#[derive(Clone, Debug)]
#[repr(C)]
pub struct ReportBody {
pub cpusvn: [u8; 16],
miscselect: [u8; 4],
reserved1: [u8; 28],
features: [u8; 8],
xfrm: [u8; 8],
pub mrenclave: [u8; 32],
reserved2: [u8; 32],
pub mrsigner: [u8; 32],
reserved3: [u8; 96],
isv_prodid: [u8; 2],
isv_svn: [u8; 2],
reserved4: [u8; 60],
pub reportdata: [u8; 64],
}
impl From<[u8; size_of::<ReportBody>()]> for ReportBody {
fn from(value: [u8; size_of::<ReportBody>()]) -> Self {
unsafe { transmute(value) }
}
}
impl From<ReportBody> for [u8; size_of::<ReportBody>()] {
fn from(value: ReportBody) -> Self {
unsafe { transmute(value) }
}
}
impl<'a> From<&'a [u8; size_of::<ReportBody>()]> for &'a ReportBody {
fn from(value: &'a [u8; size_of::<ReportBody>()]) -> Self {
unsafe { transmute(value) }
}
}
impl AsRef<[u8]> for ReportBody {
fn as_ref(&self) -> &[u8] {
unsafe { transmute::<&Self, &[u8; size_of::<Self>()]>(self) }
}
}
impl ReportBody {
pub fn misc_select(&self) -> MiscSelect {
MiscSelect::from_bits_truncate(u32::from_le_bytes(self.miscselect))
}
pub fn attributes(&self) -> Attributes {
let features = Features::from_bits_truncate(u64::from_le_bytes(self.features));
let xfrm = Xfrm::from_bits_truncate(u64::from_le_bytes(self.xfrm));
Attributes::new(features, xfrm)
}
pub fn enclave_product_id(&self) -> u16 {
u16::from_le_bytes(self.isv_prodid)
}
pub fn enclave_security_version(&self) -> u16 {
u16::from_le_bytes(self.isv_svn)
}
}
#[derive(Clone, Debug)]
#[repr(C, align(512))]
pub struct Report {
pub body: ReportBody,
pub keyid: [u8; 32],
pub mac: [u8; 16],
}
#[cfg(test)]
mod test {
use super::{Report, ReportBody};
use testaso::testaso;
testaso! {
struct ReportBody: 1, 384 => {
cpusvn: 0,
miscselect: 16,
reserved1: 20,
features: 48,
xfrm: 56,
mrenclave: 64,
reserved2: 96,
mrsigner: 128,
reserved3: 160,
isv_prodid: 256,
isv_svn: 258,
reserved4: 260,
reportdata: 320
}
struct Report: 512, 512 => {
body: 0,
keyid: 384,
mac: 416
}
}
}