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use crate::{Deserialize, Error, Result, Serialize};
use std::io::{Read, Write};
use ppproperly_macros::{Deserialize, Serialize};
pub const CHAP_CHALLENGE: u8 = 1;
pub const CHAP_RESPONSE: u8 = 2;
pub const CHAP_SUCCESS: u8 = 3;
pub const CHAP_FAILURE: u8 = 4;
#[derive(Clone, Debug, Eq, PartialEq)]
pub enum ChapData {
Challenge(ChapChallenge),
Response(ChapResponse),
Success(ChapSuccess),
Failure(ChapFailure),
}
impl Default for ChapData {
fn default() -> Self {
Self::Challenge(ChapChallenge::default())
}
}
impl Serialize for ChapData {
fn serialize<W: Write>(&self, w: &mut W) -> Result<()> {
match self {
Self::Challenge(payload) => payload.serialize(w),
Self::Response(payload) => payload.serialize(w),
Self::Success(payload) => payload.serialize(w),
Self::Failure(payload) => payload.serialize(w),
}
}
}
impl ChapData {
fn discriminant(&self) -> u8 {
match self {
Self::Challenge(_) => CHAP_CHALLENGE,
Self::Response(_) => CHAP_RESPONSE,
Self::Success(_) => CHAP_SUCCESS,
Self::Failure(_) => CHAP_FAILURE,
}
}
fn len(&self) -> u16 {
match self {
Self::Challenge(payload) => payload.len(),
Self::Response(payload) => payload.len(),
Self::Success(payload) => payload.len(),
Self::Failure(payload) => payload.len(),
}
}
fn deserialize_with_discriminant<R: Read>(
&mut self,
r: &mut R,
discriminant: &u8,
) -> Result<()> {
match *discriminant {
CHAP_CHALLENGE => {
let mut tmp = ChapChallenge::default();
tmp.deserialize(r)?;
*self = Self::Challenge(tmp);
}
CHAP_RESPONSE => {
let mut tmp = ChapResponse::default();
tmp.deserialize(r)?;
*self = Self::Response(tmp);
}
CHAP_SUCCESS => {
let mut tmp = ChapSuccess::default();
tmp.deserialize(r)?;
*self = Self::Success(tmp);
}
CHAP_FAILURE => {
let mut tmp = ChapFailure::default();
tmp.deserialize(r)?;
*self = Self::Failure(tmp);
}
_ => return Err(Error::InvalidChapCode(*discriminant)),
}
Ok(())
}
}
#[derive(Clone, Debug, Default, Eq, PartialEq, Serialize, Deserialize)]
pub struct ChapPkt {
#[ppproperly(discriminant_for(field = "data", data_type = "u8"))]
pub identifier: u8,
#[ppproperly(len_for(field = "data", offset = 4, data_type = "u16"))]
pub data: ChapData,
}
impl ChapPkt {
pub fn new_challenge(identifier: u8, value: Vec<u8>, name: String) -> Self {
Self {
identifier,
data: ChapData::Challenge(ChapChallenge { value, name }),
}
}
pub fn new_response(identifier: u8, value: Vec<u8>, name: String) -> Self {
Self {
identifier,
data: ChapData::Response(ChapResponse { value, name }),
}
}
pub fn new_success(identifier: u8, message: String) -> Self {
Self {
identifier,
data: ChapData::Success(ChapSuccess { message }),
}
}
pub fn new_failure(identifier: u8, message: String) -> Self {
Self {
identifier,
data: ChapData::Failure(ChapFailure { message }),
}
}
pub fn len(&self) -> u16 {
4 + self.data.len()
}
pub fn is_empty(&self) -> bool {
self.len() == 4
}
}
#[derive(Clone, Debug, Default, Eq, PartialEq, Serialize, Deserialize)]
pub struct ChapChallenge {
#[ppproperly(len_for(field = "value", offset = 0, data_type = "u8"))]
pub value: Vec<u8>,
pub name: String,
}
impl ChapChallenge {
pub fn len(&self) -> u16 {
(1 + self.value.len() + self.name.len()).try_into().unwrap()
}
pub fn is_empty(&self) -> bool {
self.len() == 1
}
}
#[derive(Clone, Debug, Default, Eq, PartialEq, Serialize, Deserialize)]
pub struct ChapResponse {
#[ppproperly(len_for(field = "value", offset = 0, data_type = "u8"))]
pub value: Vec<u8>,
pub name: String,
}
impl ChapResponse {
pub fn len(&self) -> u16 {
(1 + self.value.len() + self.name.len()).try_into().unwrap()
}
pub fn is_empty(&self) -> bool {
self.len() == 1
}
}
#[derive(Clone, Debug, Default, Eq, PartialEq, Serialize, Deserialize)]
pub struct ChapSuccess {
pub message: String,
}
impl ChapSuccess {
pub fn len(&self) -> u16 {
self.message.len().try_into().unwrap()
}
pub fn is_empty(&self) -> bool {
self.message.is_empty()
}
}
#[derive(Clone, Debug, Default, Eq, PartialEq, Serialize, Deserialize)]
pub struct ChapFailure {
pub message: String,
}
impl ChapFailure {
pub fn len(&self) -> u16 {
self.message.len().try_into().unwrap()
}
pub fn is_empty(&self) -> bool {
self.message.is_empty()
}
}
|
