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use crate::{
constants::CommandCode,
tss2_esys::{TPM2_MAX_CAP_CC, TPML_CC},
Error, Result, WrapperErrorKind,
};
use log::error;
use std::{convert::TryFrom, ops::Deref};
#[derive(Debug, Clone, Default)]
pub struct CommandCodeList {
command_codes: Vec<CommandCode>,
}
impl CommandCodeList {
pub const MAX_SIZE: usize = Self::calculate_max_size();
pub const fn new() -> Self {
CommandCodeList {
command_codes: Vec::new(),
}
}
pub fn add(&mut self, command_code: CommandCode) -> Result<()> {
if self.command_codes.len() + 1 > CommandCodeList::MAX_SIZE {
error!(
"Adding command code to list will make the list exceeded its maximum count(> {})",
CommandCodeList::MAX_SIZE
);
return Err(Error::local_error(WrapperErrorKind::WrongParamSize));
}
self.command_codes.push(command_code);
Ok(())
}
pub fn into_inner(self) -> Vec<CommandCode> {
self.command_codes
}
const fn calculate_max_size() -> usize {
TPM2_MAX_CAP_CC as usize
}
}
impl TryFrom<TPML_CC> for CommandCodeList {
type Error = Error;
fn try_from(tpml_cc: TPML_CC) -> Result<Self> {
let command_code_count = tpml_cc.count as usize;
if command_code_count > Self::MAX_SIZE {
error!("Error: Invalid TPML_CC count(> {})", Self::MAX_SIZE);
return Err(Error::local_error(WrapperErrorKind::InvalidParam));
}
tpml_cc.commandCodes[..command_code_count]
.iter()
.map(|&cc| CommandCode::try_from(cc))
.collect::<Result<Vec<CommandCode>>>()
.map(|command_codes| CommandCodeList { command_codes })
}
}
impl From<CommandCodeList> for TPML_CC {
fn from(command_code_list: CommandCodeList) -> Self {
let mut tpml_cc = TPML_CC::default();
for cc in command_code_list.command_codes {
tpml_cc.commandCodes[tpml_cc.count as usize] = cc.into();
tpml_cc.count += 1;
}
tpml_cc
}
}
impl TryFrom<Vec<CommandCode>> for CommandCodeList {
type Error = Error;
fn try_from(command_codes: Vec<CommandCode>) -> Result<Self> {
if command_codes.len() > Self::MAX_SIZE {
error!("Error: Invalid TPML_CC count(> {})", Self::MAX_SIZE);
return Err(Error::local_error(WrapperErrorKind::InvalidParam));
}
Ok(CommandCodeList { command_codes })
}
}
impl From<CommandCodeList> for Vec<CommandCode> {
fn from(command_code_list: CommandCodeList) -> Self {
command_code_list.command_codes
}
}
impl AsRef<[CommandCode]> for CommandCodeList {
fn as_ref(&self) -> &[CommandCode] {
self.command_codes.as_slice()
}
}
impl Deref for CommandCodeList {
type Target = Vec<CommandCode>;
fn deref(&self) -> &Self::Target {
&self.command_codes
}
}