matrix-rust-sdk/crates/matrix-qrcode/src/error.rs

62 lines
2.5 KiB
Rust

// Copyright 2021 The Matrix.org Foundation C.I.C.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
use thiserror::Error;
/// Error type describing errors that happen while QR data is being decoded.
#[derive(Error, Debug)]
pub enum DecodingError {
/// Error decoding the QR code.
#[cfg(feature = "decode_image")]
#[cfg_attr(feature = "docs", doc(cfg(decode_image)))]
#[error(transparent)]
Qr(#[from] rqrr::DeQRError),
/// The QR code data is missing the mandatory Matrix header.
#[error("the decoded QR code is missing the Matrix header")]
Header,
/// The QR code data is containing an invalid, non UTF-8, flow id.
#[error(transparent)]
Utf8(#[from] std::string::FromUtf8Error),
/// The QR code data is using an unsupported or invalid verification mode.
#[error("the QR code contains an invalid verification mode: {0}")]
Mode(u8),
/// The flow id is not a valid event ID.
#[error(transparent)]
Identifier(#[from] ruma_identifiers::Error),
#[error(transparent)]
/// The QR code data does not contain all the necessary fields.
Read(#[from] std::io::Error),
/// The QR code data uses an invalid shared secret.
#[error("the QR code contains a too short shared secret, length: {0}")]
SharedSecret(usize),
/// The QR code data uses an invalid or unsupported version.
#[error("the QR code contains an invalid or unsupported version: {0}")]
Version(u8),
}
/// Error type describing errors that happen while QR data is being encoded.
#[derive(Error, Debug)]
pub enum EncodingError {
/// Error generating a QR code from the data, likely because the data
/// doesn't fit into a QR code.
#[error(transparent)]
Qr(#[from] qrcode::types::QrError),
/// Error decoding the identity keys as base64.
#[error(transparent)]
Base64(#[from] base64::DecodeError),
/// Error encoding the given flow id, the flow id is too large.
#[error("The verification flow id length can't be converted into a u16: {0}")]
FlowId(#[from] std::num::TryFromIntError),
}