88 lines
1.8 KiB
Rust
88 lines
1.8 KiB
Rust
use std::fmt;
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use std::error::Error;
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// config error
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#[derive(Debug)]
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pub struct ConfigError(String);
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impl ConfigError {
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pub fn new(s : &str) -> Self {
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ConfigError(s.to_string())
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}
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}
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impl fmt::Display for ConfigError {
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fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
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write!(f, "ConfigError({})", self.0)
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}
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}
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impl Error for ConfigError {
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fn description(&self) -> &str {
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&self.0
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}
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fn source(&self) -> Option<&(dyn Error + 'static)> {
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None
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}
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}
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// handshake error
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#[derive(Debug)]
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pub enum HandshakeError {
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DecryptionFailure,
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UnknownPublicKey,
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InvalidMessageFormat,
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OldTimestamp
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}
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impl fmt::Display for HandshakeError {
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fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
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match self {
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HandshakeError::DecryptionFailure =>
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write!(f, "Failed to AEAD:OPEN"),
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HandshakeError::UnknownPublicKey =>
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write!(f, "Unknown public key"),
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HandshakeError::InvalidMessageFormat =>
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write!(f, "Invalid handshake message format"),
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HandshakeError::OldTimestamp =>
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write!(f, "Timestamp is less/equal to the newest")
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}
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}
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}
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impl Error for HandshakeError {
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fn description(&self) -> &str {
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"Generic Handshake Error"
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}
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fn source(&self) -> Option<&(dyn Error + 'static)> {
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None
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}
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}
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// types for resulting key-material
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struct Key {
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key : [u8; 32],
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id : u32
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}
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pub struct KeyPair {
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confimed : bool, // has the key-pair been confirmed?
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send : Key, // key for outbound messages
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recv : Key // key for inbound messages
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}
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pub struct Output (
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pub Option<KeyPair>, // resulting key-pair of successful handshake
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pub Option<Vec<u8>> // message to send
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);
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// per-peer state machine
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pub type Psk = [u8; 32];
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