2020-09-21 00:18:25 +02:00
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use std::{fmt::Write, fs::DirEntry, io, path::Path, path::PathBuf};
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use actix_web::{dev::ServiceResponse, HttpRequest, HttpResponse};
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2021-02-07 05:50:23 +01:00
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use askama_escape::{escape as escape_html_entity, Html};
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2020-09-21 00:18:25 +02:00
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use percent_encoding::{utf8_percent_encode, CONTROLS};
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/// A directory; responds with the generated directory listing.
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#[derive(Debug)]
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pub struct Directory {
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/// Base directory.
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pub base: PathBuf,
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/// Path of subdirectory to generate listing for.
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pub path: PathBuf,
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}
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impl Directory {
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/// Create a new directory
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pub fn new(base: PathBuf, path: PathBuf) -> Directory {
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Directory { base, path }
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}
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/// Is this entry visible from this directory?
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pub fn is_visible(&self, entry: &io::Result<DirEntry>) -> bool {
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if let Ok(ref entry) = *entry {
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if let Some(name) = entry.file_name().to_str() {
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if name.starts_with('.') {
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return false;
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}
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}
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if let Ok(ref md) = entry.metadata() {
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let ft = md.file_type();
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return ft.is_dir() || ft.is_file() || ft.is_symlink();
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}
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}
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false
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}
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}
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pub(crate) type DirectoryRenderer =
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dyn Fn(&Directory, &HttpRequest) -> Result<ServiceResponse, io::Error>;
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// show file url as relative to static path
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macro_rules! encode_file_url {
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($path:ident) => {
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utf8_percent_encode(&$path, CONTROLS)
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};
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}
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// " -- " & -- & ' -- ' < -- < > -- > / -- /
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macro_rules! encode_file_name {
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($entry:ident) => {
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2021-02-07 05:50:23 +01:00
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escape_html_entity(&$entry.file_name().to_string_lossy(), Html)
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2020-09-21 00:18:25 +02:00
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};
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}
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pub(crate) fn directory_listing(
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dir: &Directory,
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req: &HttpRequest,
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) -> Result<ServiceResponse, io::Error> {
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let index_of = format!("Index of {}", req.path());
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let mut body = String::new();
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let base = Path::new(req.path());
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for entry in dir.path.read_dir()? {
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if dir.is_visible(&entry) {
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let entry = entry.unwrap();
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let p = match entry.path().strip_prefix(&dir.path) {
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2021-02-12 00:03:17 +01:00
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Ok(p) if cfg!(windows) => base.join(p).to_string_lossy().replace("\\", "/"),
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2020-09-21 00:18:25 +02:00
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Ok(p) => base.join(p).to_string_lossy().into_owned(),
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Err(_) => continue,
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};
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// if file is a directory, add '/' to the end of the name
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if let Ok(metadata) = entry.metadata() {
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if metadata.is_dir() {
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let _ = write!(
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body,
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"<li><a href=\"{}\">{}/</a></li>",
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encode_file_url!(p),
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encode_file_name!(entry),
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);
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} else {
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let _ = write!(
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body,
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"<li><a href=\"{}\">{}</a></li>",
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encode_file_url!(p),
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encode_file_name!(entry),
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);
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}
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} else {
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continue;
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}
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}
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}
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let html = format!(
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"<html>\
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<head><title>{}</title></head>\
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<body><h1>{}</h1>\
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<ul>\
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{}\
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</ul></body>\n</html>",
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index_of, index_of, body
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);
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Ok(ServiceResponse::new(
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req.clone(),
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HttpResponse::Ok()
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.content_type("text/html; charset=utf-8")
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.body(html),
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))
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}
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