refactor: undo one clippy suggestion

just because i did not like it
the other ones were returns so i like the last one to be one too

Cargo.lock

@@ -38,18 +38,18 @@ checksum = "2cda8f4bcc10624c4e85bc66b3f452cca98cfa5ca002dc83a16aad2367641bea"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.104",
 ]
 
 [[package]]
 name = "async-trait"
-version = "0.1.59"
+version = "0.1.68"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "31e6e93155431f3931513b243d371981bb2770112b370c82745a1d19d2f99364"
+checksum = "b9ccdd8f2a161be9bd5c023df56f1b2a0bd1d83872ae53b71a84a12c9bf6e842"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.22",
 ]
 
 [[package]]
@@ -118,7 +118,7 @@ dependencies = [
  "heck",
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.104",
 ]
 
 [[package]]
@@ -135,9 +135,10 @@ dependencies = [
  "async-recursion",
  "axum",
  "bytes",
- "env_logger",
+ "futures",
  "hyper",
  "log",
+ "pretty_env_logger",
  "rand",
  "tokio",
  "tokio-stream",
@@ -214,58 +215,89 @@ dependencies = [
 ]
 
 [[package]]
-name = "futures-channel"
+name = "futures"
-version = "0.3.25"
+version = "0.3.28"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "52ba265a92256105f45b719605a571ffe2d1f0fea3807304b522c1d778f79eed"
+checksum = "23342abe12aba583913b2e62f22225ff9c950774065e4bfb61a19cd9770fec40"
+dependencies = [
+ "futures-channel",
+ "futures-core",
+ "futures-executor",
+ "futures-io",
+ "futures-sink",
+ "futures-task",
+ "futures-util",
+]
+
+[[package]]
+name = "futures-channel"
+version = "0.3.28"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "955518d47e09b25bbebc7a18df10b81f0c766eaf4c4f1cccef2fca5f2a4fb5f2"
 dependencies = [
  "futures-core",
+ "futures-sink",
 ]
 
 [[package]]
 name = "futures-core"
-version = "0.3.25"
+version = "0.3.28"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "04909a7a7e4633ae6c4a9ab280aeb86da1236243a77b694a49eacd659a4bd3ac"
+checksum = "4bca583b7e26f571124fe5b7561d49cb2868d79116cfa0eefce955557c6fee8c"
+
+[[package]]
+name = "futures-executor"
+version = "0.3.28"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ccecee823288125bd88b4d7f565c9e58e41858e47ab72e8ea2d64e93624386e0"
+dependencies = [
+ "futures-core",
+ "futures-task",
+ "futures-util",
+]
 
 [[package]]
 name = "futures-io"
-version = "0.3.25"
+version = "0.3.28"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "00f5fb52a06bdcadeb54e8d3671f8888a39697dcb0b81b23b55174030427f4eb"
+checksum = "4fff74096e71ed47f8e023204cfd0aa1289cd54ae5430a9523be060cdb849964"
 
 [[package]]
 name = "futures-macro"
-version = "0.3.25"
+version = "0.3.28"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bdfb8ce053d86b91919aad980c220b1fb8401a9394410e1c289ed7e66b61835d"
+checksum = "89ca545a94061b6365f2c7355b4b32bd20df3ff95f02da9329b34ccc3bd6ee72"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.22",
 ]
 
 [[package]]
 name = "futures-sink"
-version = "0.3.25"
+version = "0.3.28"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "39c15cf1a4aa79df40f1bb462fb39676d0ad9e366c2a33b590d7c66f4f81fcf9"
+checksum = "f43be4fe21a13b9781a69afa4985b0f6ee0e1afab2c6f454a8cf30e2b2237b6e"
 
 [[package]]
 name = "futures-task"
-version = "0.3.25"
+version = "0.3.28"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2ffb393ac5d9a6eaa9d3fdf37ae2776656b706e200c8e16b1bdb227f5198e6ea"
+checksum = "76d3d132be6c0e6aa1534069c705a74a5997a356c0dc2f86a47765e5617c5b65"
 
 [[package]]
 name = "futures-util"
-version = "0.3.25"
+version = "0.3.28"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "197676987abd2f9cadff84926f410af1c183608d36641465df73ae8211dc65d6"
+checksum = "26b01e40b772d54cf6c6d721c1d1abd0647a0106a12ecaa1c186273392a69533"
 dependencies = [
+ "futures-channel",
  "futures-core",
+ "futures-io",
  "futures-macro",
+ "futures-sink",
  "futures-task",
+ "memchr",
  "pin-project-lite",
  "pin-utils",
  "slab",
@@ -565,7 +597,7 @@ checksum = "069bdb1e05adc7a8990dce9cc75370895fbe4e3d58b9b73bf1aee56359344a55"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.104",
 ]
 
 [[package]]
@@ -587,19 +619,29 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5b40af805b3121feab8a3c29f04d8ad262fa8e0561883e7653e024ae4479e6de"
 
 [[package]]
-name = "proc-macro2"
+name = "pretty_env_logger"
-version = "1.0.47"
+version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5ea3d908b0e36316caf9e9e2c4625cdde190a7e6f440d794667ed17a1855e725"
+checksum = "865724d4dbe39d9f3dd3b52b88d859d66bcb2d6a0acfd5ea68a65fb66d4bdc1c"
+dependencies = [
+ "env_logger",
+ "log",
+]
+
+[[package]]
+name = "proc-macro2"
+version = "1.0.63"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7b368fba921b0dce7e60f5e04ec15e565b3303972b42bcfde1d0713b881959eb"
 dependencies = [
  "unicode-ident",
 ]
 
 [[package]]
 name = "quote"
-version = "1.0.21"
+version = "1.0.28"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bbe448f377a7d6961e30f5955f9b8d106c3f5e449d493ee1b125c1d43c2b5179"
+checksum = "1b9ab9c7eadfd8df19006f1cf1a4aed13540ed5cbc047010ece5826e10825488"
 dependencies = [
  "proc-macro2",
 ]
@@ -784,6 +826,17 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "syn"
+version = "2.0.22"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2efbeae7acf4eabd6bcdcbd11c92f45231ddda7539edc7806bd1a04a03b24616"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
+]
+
 [[package]]
 name = "sync_wrapper"
 version = "0.1.1"
@@ -827,7 +880,7 @@ checksum = "9724f9a975fb987ef7a3cd9be0350edcbe130698af5b8f7a631e23d42d052484"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.104",
 ]
 
 [[package]]

Cargo.toml

@@ -14,6 +14,7 @@ bytes = "1"
 rand = "0.8.5"
 async-recursion = "1.0.0"
 walkdir = "2"
+futures = "0.3"
 log = "0.4"
-env_logger = "0.10.0"
+pretty_env_logger = "0.5.0"
 archived = { path = "./archived" }

src/engine.rs

@@ -1,6 +1,6 @@
 use std::{
     ffi::OsStr,
-    path::PathBuf,
+    path::{Path, PathBuf},
     sync::atomic::{AtomicUsize, Ordering},
     time::Duration,
 };
@@ -67,7 +67,7 @@ impl Engine {
     }
 
     // checks in cache or disk for an upload using a pathbuf
-    pub async fn upload_exists(&self, path: &PathBuf) -> bool {
+    pub async fn upload_exists(&self, path: &Path) -> bool {
         let cache = self.cache.read().await;
 
         // check if upload is in cache
@@ -199,20 +199,20 @@ impl Engine {
     async fn read_cached_upload(&self, name: &String) -> Option<Bytes> {
         let cache = self.cache.read().await;
 
-        if !cache.contains_key(&name) {
+        if !cache.contains_key(name) {
             return None;
         }
 
         // fetch upload data from cache
         let data = cache
-            .get(&name)
+            .get(name)
             .expect("failed to read get upload data from cache")
             .to_owned();
 
         Some(data)
     }
 
-    pub async fn get_upload(&self, original_path: &PathBuf) -> Result<ViewSuccess, ViewError> {
+    pub async fn get_upload(&self, original_path: &Path) -> Result<ViewSuccess, ViewError> {
         // extract upload file name
         let name = original_path
             .file_name()
@@ -235,7 +235,7 @@ impl Engine {
         if let Some(data) = cached_data {
             info!("got upload from cache!!");
 
-            return Ok(ViewSuccess::FromCache(data));
+            Ok(ViewSuccess::FromCache(data))
         } else {
             let mut file = File::open(&path).await.unwrap();
 
@@ -280,7 +280,7 @@ impl Engine {
 
             info!("got upload from disk!");
 
-            return Ok(ViewSuccess::FromDisk(file));
+            Ok(ViewSuccess::FromDisk(file))
         }
     }
 }

src/index.rs

@@ -10,7 +10,7 @@ pub async fn index(State(engine): State<Arc<crate::engine::Engine>>) -> String {
 }
 
 // robots.txt that tells web crawlers not to list uploads
-const ROBOTS_TXT: &'static str = concat!(
+const ROBOTS_TXT: &str = concat!(
     "User-Agent: *\n",
     "Disallow: /p/*\n",
     "Allow: /\n"

src/main.rs

@@ -21,7 +21,7 @@ mod view;
 #[tokio::main]
 async fn main() {
     // initialise logger
-    env_logger::init();
+    pretty_env_logger::init();
 
     // read env vars
     let base_url = env::var("BRZ_BASE_URL").expect("missing BRZ_BASE_URL! base url for upload urls (ex: http://127.0.0.1:8000 for http://127.0.0.1:8000/p/abcdef.png, http://picture.wtf for http://picture.wtf/p/abcdef.png)");
@@ -34,10 +34,10 @@ async fn main() {
 
     // parse env vars
     let save_path = PathBuf::from(save_path);
-    let cache_max_length = usize::from_str_radix(&cache_max_length, 10).expect("failed parsing BRZ_CACHE_UPL_MAX_LENGTH! it should be a positive number without any separators");
+    let cache_max_length = cache_max_length.parse::<usize>().expect("failed parsing BRZ_CACHE_UPL_MAX_LENGTH! it should be a positive number without any separators");
-    let cache_upl_lifetime = Duration::from_secs(u64::from_str_radix(&cache_upl_lifetime, 10).expect("failed parsing BRZ_CACHE_UPL_LIFETIME! it should be a positive number without any separators"));
+    let cache_upl_lifetime = Duration::from_secs(cache_upl_lifetime.parse::<u64>().expect("failed parsing BRZ_CACHE_UPL_LIFETIME! it should be a positive number without any separators"));
-    let cache_scan_freq = Duration::from_secs(u64::from_str_radix(&cache_scan_freq, 10).expect("failed parsing BRZ_CACHE_SCAN_FREQ! it should be a positive number without any separators"));
+    let cache_scan_freq = Duration::from_secs(cache_scan_freq.parse::<u64>().expect("failed parsing BRZ_CACHE_SCAN_FREQ! it should be a positive number without any separators"));
-    let cache_mem_capacity = usize::from_str_radix(&cache_mem_capacity, 10).expect("failed parsing BRZ_CACHE_MEM_CAPACITY! it should be a positive number without any separators");
+    let cache_mem_capacity = cache_mem_capacity.parse::<usize>().expect("failed parsing BRZ_CACHE_MEM_CAPACITY! it should be a positive number without any separators");
 
     if !save_path.exists() || !save_path.is_dir() {
         panic!("the save path does not exist or is not a directory! this is invalid");

src/new.rs

@@ -43,7 +43,7 @@ pub async fn new(
         .get(header::CONTENT_LENGTH)
         .unwrap_or(&HeaderValue::from_static(""))
         .to_str()
-        .and_then(|s| Ok(usize::from_str_radix(s, 10)))
+        .map(|s| s.parse::<usize>())
         .unwrap()
         .unwrap_or(usize::MAX);
 
@@ -51,6 +51,6 @@ pub async fn new(
     engine
         .process_upload(path, name, content_length, stream)
         .await;
-    
+
     Ok(url)
 }

src/view.rs

@@ -10,8 +10,8 @@ use axum::{
 };
 
 use bytes::Bytes;
-use hyper::StatusCode;
+use hyper::{http::HeaderValue, StatusCode};
-use tokio::fs::File;
+use tokio::{fs::File, runtime::Handle};
 use tokio_util::io::ReaderStream;
 
 pub enum ViewSuccess {
@@ -20,7 +20,7 @@ pub enum ViewSuccess {
 }
 
 pub enum ViewError {
-    NotFound, // 404
+    NotFound,            // 404
     InternalServerError, // 500
 }
 
@@ -28,11 +28,48 @@ impl IntoResponse for ViewSuccess {
     fn into_response(self) -> Response {
         match self {
             ViewSuccess::FromDisk(file) => {
+                // get handle to current runtime
+                // i use this to block on futures here (not async)
+                let handle = Handle::current();
+                let _ = handle.enter();
+
+                // read the metadata of the file on disk
+                // this function isn't async
+                // .. so we have to use handle.block_on() to get the metadata
+                let metadata = futures::executor::block_on(file.metadata());
+
+                // if we error then return 500
+                if metadata.is_err() {
+                    error!("failed to read metadata from disk");
+                    return ViewError::InternalServerError.into_response();
+                }
+
+                // unwrap (which we know is safe) and read the file size as a string
+                let metadata = metadata.unwrap();
+                let len_str = metadata.len().to_string();
+
+                debug!("file is {} bytes on disk", &len_str);
+
+                // HeaderValue::from_str will never error if only visible ASCII characters are passed (32-127)
+                // .. so unwrapping this should be fine
+                let content_length = HeaderValue::from_str(&len_str).unwrap();
+
                 // create a streamed body response (we want to stream larger files)
                 let reader = ReaderStream::new(file);
                 let stream = StreamBody::new(reader);
 
-                stream.into_response()
+                // extract mutable headers from the response
+                let mut res = stream.into_response();
+                let headers = res.headers_mut();
+
+                // clear headers, browser can imply content type
+                headers.clear();
+
+                // insert Content-Length header
+                // that way the browser shows how big a file is when it's being downloaded
+                headers.insert("Content-Length", content_length);
+
+                res
             }
             ViewSuccess::FromCache(data) => {
                 // extract mutable headers from the response
@@ -61,7 +98,7 @@ impl IntoResponse for ViewError {
             ViewError::InternalServerError => {
                 // convert string into response, change status code
                 let mut res = "internal server error!".into_response();
-                *res.status_mut() = StatusCode::NOT_FOUND;
+                *res.status_mut() = StatusCode::INTERNAL_SERVER_ERROR;
 
                 res
             }
@@ -77,7 +114,6 @@ pub async fn view(
     // (hopefully) prevent path traversal, just check for any non-file components
     if original_path
         .components()
-        .into_iter()
         .any(|x| !matches!(x, Component::Normal(_)))
     {
         warn!("a request attempted path traversal");