77 lines
2.2 KiB
Rust
77 lines
2.2 KiB
Rust
use crate::util;
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use actix_web::{error, Error as ActixError};
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use glob::glob;
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use std::convert::TryFrom;
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use std::fs::File as OsFile;
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use std::path::{Path, PathBuf};
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/// [`PathBuf`] wrapper for storing checksums.
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#[derive(Debug)]
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pub struct File {
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/// Path of the file.
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pub path: PathBuf,
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/// SHA256 checksum.
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pub sha256sum: String,
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}
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/// Directory that contains [`File`]s.
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pub struct Directory {
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/// Files in the directory.
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pub files: Vec<File>,
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}
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impl<'a> TryFrom<&'a Path> for Directory {
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type Error = ActixError;
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fn try_from(directory: &'a Path) -> Result<Self, Self::Error> {
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let files = glob(directory.join("**").join("*").to_str().ok_or_else(|| {
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error::ErrorInternalServerError("directory contains invalid characters")
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})?)
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.map_err(error::ErrorInternalServerError)?
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.filter_map(Result::ok)
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.filter(|path| !path.is_dir())
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.filter_map(|path| match OsFile::open(&path) {
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Ok(file) => Some((path, file)),
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_ => None,
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})
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.filter_map(|(path, file)| match util::sha256_digest(file) {
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Ok(sha256sum) => Some(File { path, sha256sum }),
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_ => None,
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})
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.collect();
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Ok(Self { files })
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}
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}
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impl Directory {
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/// Returns the file that matches the given checksum.
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pub fn get_file<S: AsRef<str>>(self, sha256sum: S) -> Option<File> {
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self.files.into_iter().find(|file| {
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file.sha256sum == sha256sum.as_ref()
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&& !util::TIMESTAMP_EXTENSION_REGEX.is_match(&file.path.to_string_lossy())
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})
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}
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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use std::ffi::OsString;
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#[test]
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fn test_file_checksum() -> Result<(), ActixError> {
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assert_eq!(
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Some(OsString::from("rustypaste_logo.png").as_ref()),
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Directory::try_from(
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PathBuf::from(env!("CARGO_MANIFEST_DIR"))
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.join("img")
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.as_path()
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)?
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.get_file("2073f6f567dcba3b468c568d29cf8ed2e9d3f0f7305b9ab1b5a22861f5922e61")
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.expect("cannot get file with checksum")
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.path
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.file_name()
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);
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Ok(())
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}
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}
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