From 11ea8a19d1481b0660e5a2765da6e67d3e8aa72c Mon Sep 17 00:00:00 2001
From: Sven-Hendrik Haase <svenstaro@gmail.com>
Date: Fri, 7 Mar 2025 11:00:48 +0100
Subject: Add asynchronous directory size counting

This is enabled by default and without an option to toggle it off as it's asynchronous and shouldn't
block the server thread.
---
 src/main.rs | 45 ++++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 42 insertions(+), 3 deletions(-)

(limited to 'src/main.rs')

diff --git a/src/main.rs b/src/main.rs
index 856d22d..adda3f7 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -14,6 +14,7 @@ use actix_web::{
 };
 use actix_web_httpauth::middleware::HttpAuthentication;
 use anyhow::Result;
+use bytesize::ByteSize;
 use clap::{CommandFactory, Parser, crate_version};
 use colored::*;
 use dav_server::{
@@ -21,7 +22,8 @@ use dav_server::{
     actix::{DavRequest, DavResponse},
 };
 use fast_qr::QRBuilder;
-use log::{error, warn};
+use log::{error, info, warn};
+use serde::Deserialize;
 
 mod archive;
 mod args;
@@ -38,6 +40,7 @@ mod webdav_fs;
 
 use crate::config::MiniserveConfig;
 use crate::errors::{RuntimeError, StartupError};
+use crate::file_op::recursive_dir_size;
 use crate::webdav_fs::RestrictedFs;
 
 static STYLESHEET: &str = grass::include!("data/style.scss");
@@ -215,7 +218,7 @@ async fn run(miniserve_config: MiniserveConfig) -> Result<(), StartupError> {
     let srv = actix_web::HttpServer::new(move || {
         App::new()
             .wrap(configure_header(&inside_config.clone()))
-            .app_data(inside_config.clone())
+            .app_data(web::Data::new(inside_config.clone()))
             .app_data(stylesheet.clone())
             .wrap(from_fn(errors::error_page_middleware))
             .wrap(middleware::Logger::default())
@@ -224,6 +227,7 @@ async fn run(miniserve_config: MiniserveConfig) -> Result<(), StartupError> {
                 middleware::Compress::default(),
             ))
             .route(&inside_config.healthcheck_route, web::get().to(healthcheck))
+            .route(&inside_config.api_route, web::post().to(api))
             .route(&inside_config.favicon_route, web::get().to(favicon))
             .route(&inside_config.css_route, web::get().to(css))
             .service(
@@ -353,7 +357,7 @@ fn configure_app(app: &mut web::ServiceConfig, conf: &MiniserveConfig) {
             files = files.default_handler(fn_service(|req: ServiceRequest| async {
                 let (req, _) = req.into_parts();
                 let conf = req
-                    .app_data::<MiniserveConfig>()
+                    .app_data::<web::Data<MiniserveConfig>>()
                     .expect("Could not get miniserve config");
                 let mut path_base = req.path()[1..].to_string();
                 if path_base.ends_with('/') {
@@ -438,6 +442,41 @@ async fn healthcheck() -> impl Responder {
     HttpResponse::Ok().body("OK")
 }
 
+#[derive(Deserialize, Debug)]
+enum ApiCommand {
+    /// Request the size of a particular directory
+    DirSize(String),
+}
+
+/// This "API" is pretty shitty but frankly miniserve doesn't really need a very fancy API. Or at
+/// least I hope so.
+async fn api(
+    command: web::Json<ApiCommand>,
+    config: web::Data<MiniserveConfig>,
+) -> Result<impl Responder, RuntimeError> {
+    match command.into_inner() {
+        ApiCommand::DirSize(dir) => {
+            // Convert the relative dir to an absolute path on the system
+            let sanitized_path =
+                file_utils::sanitize_path(&dir, true).expect("Expected a path to directory");
+            let full_path = config
+                .path
+                .canonicalize()
+                .expect("Couldn't canonicalize path")
+                .join(sanitized_path);
+            info!("Requested directory listing for {full_path:?}");
+
+            let dir_size = recursive_dir_size(&full_path).await?;
+            if config.show_exact_bytes {
+                Ok(format!("{dir_size} B"))
+            } else {
+                let dir_size = ByteSize::b(dir_size);
+                Ok(dir_size.to_string())
+            }
+        }
+    }
+}
+
 async fn favicon() -> impl Responder {
     let logo = include_str!("../data/logo.svg");
     HttpResponse::Ok()
-- 
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