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use async_trait::async_trait;
use chrono::prelude::*;
use mime;
use percent_encoding::{percent_decode_str, utf8_percent_encode, NON_ALPHANUMERIC};
use serde_json::json;
use std::collections::HashMap;
use std::fs::{self, Metadata};
use std::path::{Path, PathBuf};
use std::time::SystemTime;
use salvo_core::depot::Depot;
use salvo_core::http::errors::*;
use salvo_core::http::{Request, Response};
use salvo_core::fs::NamedFile;
use salvo_core::Writer;
use salvo_core::Handler;
#[derive(Debug, Clone)]
pub struct Options {
pub dot_files: bool,
pub listing: bool,
pub defaults: Vec<String>,
}
impl Options {
fn new() -> Options {
Options {
dot_files: true,
listing: true,
defaults: vec!["index.html".to_owned()],
}
}
}
impl Default for Options {
fn default() -> Self {
Options::new()
}
}
pub trait StaticRoots {
fn collect(&self) -> Vec<PathBuf>;
}
impl<'a> StaticRoots for &'a str {
fn collect(&self) -> Vec<PathBuf> {
vec![PathBuf::from(self)]
}
}
impl<'a> StaticRoots for Vec<&'a str> {
fn collect(&self) -> Vec<PathBuf> {
self.iter().map(PathBuf::from).collect()
}
}
impl<'a> StaticRoots for &'a String {
fn collect(&self) -> Vec<PathBuf> {
vec![PathBuf::from(self)]
}
}
impl<'a> StaticRoots for Vec<&'a String> {
fn collect(&self) -> Vec<PathBuf> {
self.iter().map(PathBuf::from).collect()
}
}
impl<'a> StaticRoots for String {
fn collect(&self) -> Vec<PathBuf> {
vec![PathBuf::from(self)]
}
}
impl<'a> StaticRoots for Vec<String> {
fn collect(&self) -> Vec<PathBuf> {
self.iter().map(PathBuf::from).collect()
}
}
impl StaticRoots for Path {
fn collect(&self) -> Vec<PathBuf> {
vec![PathBuf::from(self)]
}
}
#[derive(Clone)]
pub struct StaticDir {
roots: Vec<PathBuf>,
options: Options,
}
impl StaticDir {
pub fn new<T: StaticRoots + Sized>(roots: T) -> Self {
StaticDir::width_options(roots, Options::default())
}
pub fn width_options<T: StaticRoots + Sized>(roots: T, options: Options) -> Self {
StaticDir {
roots: roots.collect(),
options,
}
}
}
fn list_json(root: &BaseInfo) -> String {
json!(root).to_string()
}
fn list_xml(root: &BaseInfo) -> String {
let mut ftxt = "<list>".to_owned();
if root.dirs.is_empty() && root.files.is_empty() {
ftxt.push_str("No files");
} else {
ftxt.push_str("<table>");
for dir in &root.dirs {
ftxt.push_str(&format!(
"<dir><name>{}</name><modified>{}</modified><link>{}</link></dir>",
dir.name,
dir.modified.format("%Y-%m-%d %H:%M:%S"),
encode_url_path(&dir.name),
));
}
for file in &root.files {
ftxt.push_str(&format!(
"<file><name>{}</name><modified>{}</modified><size>{}</size><link>{}</link></file>",
file.name,
file.modified.format("%Y-%m-%d %H:%M:%S"),
file.size,
encode_url_path(&file.name),
));
}
ftxt.push_str("</table>");
}
ftxt.push_str("</list>");
ftxt
}
fn list_html(root: &BaseInfo) -> String {
let mut ftxt = format!(
"<!DOCTYPE html>
<html>
<head>
<meta charset=\"utf-8\">
<title>{}</title>
</head>
<body>
<h1>Index of: {}</h1>
<hr/>
<a href=\"../\">[../]</a><br><br>
",
root.path, root.path
);
if root.dirs.is_empty() && root.files.is_empty() {
ftxt.push_str("No files");
} else {
ftxt.push_str("<table>");
for dir in &root.dirs {
ftxt.push_str(&format!(
"<tr><td><a href=\"./{}/\">{}/</a></td><td>{}</td><td></td></tr>",
encode_url_path(&dir.name),
dir.name,
dir.modified.format("%Y-%m-%d %H:%M:%S")
));
}
for file in &root.files {
ftxt.push_str(&format!(
"<tr><td><a href=\"./{}\">{}</a></td><td>{}</td><td>{}</td></tr>",
encode_url_path(&file.name),
file.name,
file.modified.format("%Y-%m-%d %H:%M:%S"),
file.size
));
}
ftxt.push_str("</table>");
}
ftxt.push_str("<hr/><div style=\"text-align:center;\"><small>salvo</small></div></body>");
ftxt
}
fn list_text(root: &BaseInfo) -> String {
json!(root).to_string()
}
#[derive(Serialize, Deserialize, Debug)]
struct BaseInfo {
path: String,
files: Vec<FileInfo>,
dirs: Vec<DirInfo>,
}
impl BaseInfo {
fn new(path: String, files: Vec<FileInfo>, dirs: Vec<DirInfo>) -> BaseInfo {
BaseInfo { path, files, dirs }
}
}
#[derive(Serialize, Deserialize, Debug)]
struct FileInfo {
name: String,
size: u64,
modified: DateTime<Local>,
}
impl FileInfo {
fn new(name: String, metadata: Metadata) -> FileInfo {
FileInfo {
name,
size: metadata.len(),
modified: metadata.modified().unwrap_or_else(|_| SystemTime::now()).into(),
}
}
}
#[derive(Serialize, Deserialize, Debug)]
struct DirInfo {
name: String,
modified: DateTime<Local>,
}
impl DirInfo {
fn new(name: String, metadata: Metadata) -> DirInfo {
DirInfo {
name,
modified: metadata.modified().unwrap_or_else(|_| SystemTime::now()).into(),
}
}
}
#[async_trait]
impl Handler for StaticDir {
async fn handle(&self, req: &mut Request, depot: &mut Depot, res: &mut Response) {
let param = req.params().iter().find(|(key, _)| key.starts_with('*'));
let req_path = req.uri().path();
let mut base_path = if let Some((_, value)) = param { value } else { req_path }.to_owned();
if base_path.starts_with('/') || base_path.starts_with('\\') {
base_path = format!(".{}", base_path);
}
let base_path = decode_url_path_safely(&base_path);
let mut files: HashMap<String, Metadata> = HashMap::new();
let mut dirs: HashMap<String, Metadata> = HashMap::new();
let mut path_exist = false;
for root in &self.roots {
let path = root.join(&base_path);
if path.is_dir() && self.options.listing {
path_exist = true;
if !req_path.ends_with('/') {
res.redirect_found(format!("{}/", req_path));
return;
}
for ifile in &self.options.defaults {
let ipath = path.join(ifile);
if ipath.exists() {
if let Ok(named_file) = NamedFile::open(ipath) {
named_file.write(req, depot, res).await;
} else {
res.set_http_error(InternalServerError().with_summary("file read error".into()));
}
return;
}
}
if let Ok(entries) = fs::read_dir(&path) {
for entry in entries {
if let Ok(entry) = entry {
if let Ok(metadata) = entry.metadata() {
if metadata.is_dir() {
dirs.entry(entry.file_name().into_string().unwrap_or_else(|_| "".to_owned()))
.or_insert(metadata);
} else {
files
.entry(entry.file_name().into_string().unwrap_or_else(|_| "".to_owned()))
.or_insert(metadata);
}
}
}
}
}
} else if path.is_file() {
if let Ok(named_file) = NamedFile::open(path) {
named_file.write(req, depot, res).await;
} else {
res.set_http_error(InternalServerError().with_summary("file read error".into()));
}
return;
}
}
if !path_exist || !self.options.listing {
res.set_http_error(NotFound());
return;
}
let mut format = req.frist_accept().unwrap_or(mime::TEXT_HTML);
if format.type_() != "text" {
format = mime::TEXT_HTML;
}
let mut files: Vec<FileInfo> = files.into_iter().map(|(name, metadata)| FileInfo::new(name, metadata)).collect();
files.sort_by(|a, b| a.name.cmp(&b.name));
let mut dirs: Vec<DirInfo> = dirs.into_iter().map(|(name, metadata)| DirInfo::new(name, metadata)).collect();
dirs.sort_by(|a, b| a.name.cmp(&b.name));
let root = BaseInfo::new(req_path.to_owned(), files, dirs);
match format.subtype().as_ref() {
"text" => res.render_plain_text(&list_text(&root)),
"json" => res.render_json_text(&list_json(&root)),
"xml" => res.render_xml_text(&list_xml(&root)),
_ => res.render_html_text(&list_html(&root)),
}
}
}
fn decode_url_path_safely(raw: &str) -> String {
raw.split('/')
.map(|s| percent_decode_str(s).decode_utf8_lossy())
.filter(|s| !s.contains('/'))
.collect::<Vec<_>>()
.join("/")
}
fn encode_url_path(path: &str) -> String {
path.split('/')
.map(|s| utf8_percent_encode(s, NON_ALPHANUMERIC).to_string())
.collect::<Vec<_>>()
.join("/")
}