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use std::{fmt::Write, fs::DirEntry, io, path::Path, path::PathBuf};
use actix_web::{dev::ServiceResponse, HttpRequest, HttpResponse};
use askama_escape::{escape as escape_html_entity, Html};
use percent_encoding::{utf8_percent_encode, CONTROLS};
#[derive(Debug)]
pub struct Directory {
pub base: PathBuf,
pub path: PathBuf,
}
impl Directory {
pub fn new(base: PathBuf, path: PathBuf) -> Directory {
Directory { base, path }
}
pub fn is_visible(&self, entry: &io::Result<DirEntry>) -> bool {
if let Ok(ref entry) = *entry {
if let Some(name) = entry.file_name().to_str() {
if name.starts_with('.') {
return false;
}
}
if let Ok(ref md) = entry.metadata() {
let ft = md.file_type();
return ft.is_dir() || ft.is_file() || ft.is_symlink();
}
}
false
}
}
pub(crate) type DirectoryRenderer =
dyn Fn(&Directory, &HttpRequest) -> Result<ServiceResponse, io::Error>;
macro_rules! encode_file_url {
($path:ident) => {
utf8_percent_encode(&$path, CONTROLS)
};
}
macro_rules! encode_file_name {
($entry:ident) => {
escape_html_entity(&$entry.file_name().to_string_lossy(), Html)
};
}
pub(crate) fn directory_listing(
dir: &Directory,
req: &HttpRequest,
) -> Result<ServiceResponse, io::Error> {
let index_of = format!("Index of {}", req.path());
let mut body = String::new();
let base = Path::new(req.path());
for entry in dir.path.read_dir()? {
if dir.is_visible(&entry) {
let entry = entry.unwrap();
let p = match entry.path().strip_prefix(&dir.path) {
Ok(p) if cfg!(windows) => base.join(p).to_string_lossy().replace("\\", "/"),
Ok(p) => base.join(p).to_string_lossy().into_owned(),
Err(_) => continue,
};
if let Ok(metadata) = entry.metadata() {
if metadata.is_dir() {
let _ = write!(
body,
"<li><a href=\"{}\">{}/</a></li>",
encode_file_url!(p),
encode_file_name!(entry),
);
} else {
let _ = write!(
body,
"<li><a href=\"{}\">{}</a></li>",
encode_file_url!(p),
encode_file_name!(entry),
);
}
} else {
continue;
}
}
}
let html = format!(
"<html>\
<head><title>{}</title></head>\
<body><h1>{}</h1>\
<ul>\
{}\
</ul></body>\n</html>",
index_of, index_of, body
);
Ok(ServiceResponse::new(
req.clone(),
HttpResponse::Ok()
.content_type("text/html; charset=utf-8")
.body(html),
))
}