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//
// Copyright (c) 2020-2021 science+computing ag and other contributors
//
// This program and the accompanying materials are made
// available under the terms of the Eclipse Public License 2.0
// which is available at https://www.eclipse.org/legal/epl-2.0/
//
// SPDX-License-Identifier: EPL-2.0
//
use std::io::Read;
use anyhow::anyhow;
use anyhow::Result;
use getset::Getters;
use log::trace;
use serde::Deserialize;
use serde::Serialize;
use url::Url;
use sha2::Digest;
#[derive(Clone, Debug, Serialize, Deserialize, Getters)]
pub struct Source {
#[getset(get = "pub")]
url: Url,
#[getset(get = "pub")]
hash: SourceHash,
#[getset(get = "pub")]
download_manually: bool,
}
impl Source {
#[cfg(test)]
pub fn new(url: Url, hash: SourceHash) -> Self {
Source {
url,
hash,
download_manually: false,
}
}
}
#[derive(Clone, Debug, Serialize, Deserialize, Getters)]
pub struct SourceHash {
#[serde(rename = "type")]
#[getset(get = "pub")]
hashtype: HashType,
#[serde(rename = "hash")]
#[getset(get = "pub")]
value: HashValue,
}
impl SourceHash {
pub fn matches_hash_of<R: Read>(&self, reader: R) -> Result<()> {
trace!("Hashing buffer with: {:?}", self.hashtype);
let h = self.hashtype.hash_from_reader(reader)?;
trace!("Hashing buffer with: {} finished", self.hashtype);
if h == self.value {
trace!("Hash matches expected hash");
Ok(())
} else {
trace!("Hash mismatch expected hash");
Err(anyhow!(
"Hash mismatch, expected '{}', got '{}'",
self.value,
h
))
}
}
#[cfg(test)]
pub fn new(hashtype: HashType, value: HashValue) -> Self {
SourceHash { hashtype, value }
}
}
#[derive(parse_display::Display, Clone, Debug, Serialize, Deserialize)]
pub enum HashType {
#[serde(rename = "sha1")]
#[display("sha1")]
Sha1,
#[serde(rename = "sha256")]
#[display("sha256")]
Sha256,
#[serde(rename = "sha512")]
#[display("sha512")]
Sha512,
}
impl HashType {
fn hash_from_reader<R: Read>(&self, mut reader: R) -> Result<HashValue> {
let mut buffer = [0; 1024];
match self {
HashType::Sha1 => {
trace!("SHA1 hashing buffer");
let mut m = sha1::Sha1::new();
loop {
let count = reader.read(&mut buffer)?;
if count == 0 {
break;
}
m.update(&buffer[..count]);
}
Ok(HashValue(m.digest().to_string()))
}
HashType::Sha256 => {
trace!("SHA256 hashing buffer");
let mut m = sha2::Sha256::new();
loop {
let count = reader.read(&mut buffer)?;
if count == 0 {
break;
}
m.update(&buffer[..count]);
}
Ok(HashValue(String::from_utf8(m.finalize()[..].to_vec())?))
}
HashType::Sha512 => {
trace!("SHA512 hashing buffer");
let mut m = sha2::Sha512::new();
loop {
let count = reader.read(&mut buffer)?;
if count == 0 {
break;
}
m.update(&buffer[..count]);
}
Ok(HashValue(String::from_utf8(m.finalize()[..].to_vec())?))
}
}
}
}
#[derive(parse_display::Display, Serialize, Deserialize, Clone, Debug, Hash, Eq, PartialEq)]
#[serde(transparent)]
#[display("{0}")]
pub struct HashValue(String);
#[cfg(test)]
impl From<String> for HashValue {
fn from(s: String) -> Self {
HashValue(s)
}
}
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