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use actix_web::{fs, HttpRequest, HttpResponse, Result};
use bytesize::ByteSize;
use clap::{_clap_count_exprs, arg_enum};
use htmlescape::encode_minimal as escape_html_entity;
use percent_encoding::{utf8_percent_encode, DEFAULT_ENCODE_SET};
use std::cmp::Ordering;
use std::io;
use std::path::Path;
use std::time::SystemTime;
use crate::renderer;
arg_enum! {
#[derive(Clone, Copy, Debug)]
/// Available sorting methods
///
/// Natural: natural sorting method
/// 1 -> 2 -> 3 -> 11
///
/// Alpha: pure alphabetical sorting method
/// 1 -> 11 -> 2 -> 3
///
/// DirsFirst: directories are listed first, alphabetical sorting is also applied
/// 1/ -> 2/ -> 3/ -> 11 -> 12
///
/// Date: sort by last modification date (most recent first)
pub enum SortingMethods {
Natural,
Alpha,
DirsFirst,
Date
}
}
#[derive(PartialEq)]
/// Possible entry types
pub enum EntryType {
/// Entry is a directory
Directory,
/// Entry is a file
File,
}
impl PartialOrd for EntryType {
fn partial_cmp(&self, other: &EntryType) -> Option<Ordering> {
match (self, other) {
(EntryType::Directory, EntryType::File) => Some(Ordering::Less),
(EntryType::File, EntryType::Directory) => Some(Ordering::Greater),
_ => Some(Ordering::Equal),
}
}
}
/// Entry
pub struct Entry {
/// Name of the entry
pub name: String,
/// Type of the entry
pub entry_type: EntryType,
/// URL of the entry
pub link: String,
/// Size in byte of the entry. Only available for EntryType::File
pub size: Option<bytesize::ByteSize>,
/// Last modification date
pub last_modification_date: Option<SystemTime>,
}
impl Entry {
fn new(
name: String,
entry_type: EntryType,
link: String,
size: Option<bytesize::ByteSize>,
last_modification_date: Option<SystemTime>,
) -> Self {
Entry {
name,
entry_type,
link,
size,
last_modification_date,
}
}
pub fn is_dir(&self) -> bool {
self.entry_type == EntryType::Directory
}
}
pub fn file_handler(req: &HttpRequest<crate::MiniserveConfig>) -> Result<fs::NamedFile> {
let path = &req.state().path;
Ok(fs::NamedFile::open(path)?)
}
/// List a directory and renders a HTML file accordingly
/// Adapted from https://docs.rs/actix-web/0.7.13/src/actix_web/fs.rs.html#564
pub fn directory_listing<S>(
dir: &fs::Directory,
req: &HttpRequest<S>,
skip_symlinks: bool,
random_route: Option<String>,
sort_method: SortingMethods,
reverse_sort: bool,
) -> Result<HttpResponse, io::Error> {
let title = format!("Index of {}", req.path());
let base = Path::new(req.path());
let random_route = format!("/{}", random_route.unwrap_or_default());
let is_root = base.parent().is_none() || req.path() == random_route;
let page_parent = base.parent().map(|p| p.display().to_string());
let mut entries: Vec<Entry> = Vec::new();
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) => base.join(p),
Err(_) => continue,
};
// show file url as relative to static path
let file_url =
utf8_percent_encode(&p.to_string_lossy(), DEFAULT_ENCODE_SET).to_string();
// " -- " & -- & ' -- ' < -- < > -- >
let file_name = escape_html_entity(&entry.file_name().to_string_lossy());
// if file is a directory, add '/' to the end of the name
if let Ok(metadata) = entry.metadata() {
if skip_symlinks && metadata.file_type().is_symlink() {
continue;
}
let last_modification_date = match metadata.modified() {
Ok(date) => Some(date),
Err(_) => None,
};
if metadata.is_dir() {
entries.push(Entry::new(
file_name,
EntryType::Directory,
file_url,
None,
last_modification_date,
));
} else {
entries.push(Entry::new(
file_name,
EntryType::File,
file_url,
Some(ByteSize::b(metadata.len())),
last_modification_date,
));
}
} else {
continue;
}
}
}
match sort_method {
SortingMethods::Natural => entries
.sort_by(|e1, e2| alphanumeric_sort::compare_str(e1.name.clone(), e2.name.clone())),
SortingMethods::Alpha => {
entries.sort_by(|e1, e2| e1.entry_type.partial_cmp(&e2.entry_type).unwrap());
entries.sort_by_key(|e| e.name.clone())
}
SortingMethods::DirsFirst => {
entries.sort_by_key(|e| e.name.clone());
entries.sort_by(|e1, e2| e1.entry_type.partial_cmp(&e2.entry_type).unwrap());
}
SortingMethods::Date => entries.sort_by(|e1, e2| {
// If, for some reason, we can't get the last modification date of an entry
// let's consider it was modified on UNIX_EPOCH (01/01/19270 00:00:00)
e2.last_modification_date
.unwrap_or(SystemTime::UNIX_EPOCH)
.cmp(&e1.last_modification_date.unwrap_or(SystemTime::UNIX_EPOCH))
}),
};
if reverse_sort {
entries.reverse();
}
Ok(HttpResponse::Ok()
.content_type("text/html; charset=utf-8")
.body(renderer::page(&title, entries, is_root, page_parent).into_string()))
}
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