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breeze
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mostly just auth

This commit is contained in:
minish 2023-02-01 19:05:13 -05:00 committed by minish
parent a3c69ef914
commit 2662128bbb
6 changed files with 50 additions and 26 deletions
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2
Cargo.lock generated
View File

@ -129,7 +129,7 @@ checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
[[package]]
name = "breeze"
version = "0.1.1"
version = "0.1.2"
dependencies = [
"archived",
"async-recursion",

2
Cargo.toml
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@ -1,6 +1,6 @@
[package]
name = "breeze"
version = "0.1.1"
version = "0.1.2"
edition = "2021"
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

33
src/engine.rs
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@ -20,16 +20,17 @@ use tokio::{
use tokio_stream::StreamExt;
use walkdir::WalkDir;
use crate::view::{ViewSuccess, ViewError};
use crate::view::{ViewError, ViewSuccess};
pub struct Engine {
// state
cache: RwLock<Archive>, // in-memory cache. note/ i plan to lock the cache specifically only when needed rather than locking the whole struct
cache: RwLock<Archive>, // in-memory cache
pub upl_count: AtomicUsize, // cached count of uploaded files
// config
pub base_url: String, // base url for formatting upload urls
save_path: PathBuf, // where uploads are saved to disk
pub base_url: String, // base url for formatting upload urls
save_path: PathBuf, // where uploads are saved to disk
pub upload_key: String, // authorisation key for uploading new files
cache_max_length: usize, // if an upload is bigger than this size, it won't be cached
}
@ -39,6 +40,7 @@ impl Engine {
pub fn new(
base_url: String,
save_path: PathBuf,
upload_key: String,
cache_max_length: usize,
cache_lifetime: Duration,
cache_full_scan_freq: Duration, // how often the cache will be scanned for expired items
@ -54,6 +56,7 @@ impl Engine {
base_url,
save_path,
upload_key,
cache_max_length,
}
@ -141,11 +144,11 @@ impl Engine {
// create file to save upload to
let mut file = File::create(path)
.await
.expect("could not open file! make sure your upload path exists");
.expect("could not open file! make sure your upload path is valid");
// receive chunks and save them to file
while let Some(chunk) = rx.recv().await {
debug!(target: "process_upload", "writing chunk to disk (length: {})", chunk.len());
debug!("writing chunk to disk (length: {})", chunk.len());
file.write_all(&chunk)
.await
.expect("error while writing file to disk");
@ -157,15 +160,15 @@ impl Engine {
let chunk = chunk.unwrap();
// send chunk to io task
debug!(target: "process_upload", "sending data to io task");
debug!("sending data to io task");
tx.send(chunk.clone())
.await
.expect("failed to send data to io task");
if use_cache {
debug!(target: "process_upload", "receiving data into buffer");
debug!("receiving data into buffer");
if data.len() + chunk.len() > data.capacity() {
error!(target: "process_upload", "the amount of data sent exceeds the content-length provided by the client! caching will be cancelled for this upload.");
error!("the amount of data sent exceeds the content-length provided by the client! caching will be cancelled for this upload.");
// if we receive too much data, drop the buffer and stop using cache (it is still okay to use disk, probably)
data = BytesMut::new();
@ -180,10 +183,12 @@ impl Engine {
if use_cache {
let mut cache = self.cache.write().await;
info!(target: "process_upload", "caching upload!");
info!("caching upload!");
cache.insert(name, data.freeze());
}
info!("finished processing upload!!");
// if all goes well, increment the cached upload counter
self.upl_count.fetch_add(1, Ordering::Relaxed);
}
@ -228,7 +233,7 @@ impl Engine {
let cached_data = self.read_cached_upload(&name).await;
if let Some(data) = cached_data {
info!(target: "get_upload", "got upload from cache!!");
info!("got upload from cache!!");
return Ok(ViewSuccess::FromCache(data));
} else {
@ -241,7 +246,7 @@ impl Engine {
.expect("failed to read upload file metadata")
.len() as usize;
debug!(target: "get_upload", "read upload from disk, size = {}", length);
debug!("read upload from disk, size = {}", length);
// if the upload is okay to cache, recache it and send a fromcache response
if self.will_use_cache(length) {
@ -268,12 +273,12 @@ impl Engine {
let mut cache = self.cache.write().await;
cache.insert(name, data.clone());
info!(target: "get_upload", "recached upload from disk!");
info!(/* */"recached upload from disk!");
return Ok(ViewSuccess::FromCache(data));
}
info!(target: "get_upload", "got upload from disk!");
info!("got upload from disk!");
return Ok(ViewSuccess::FromDisk(file));
}

11
src/main.rs
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@ -26,6 +26,7 @@ async fn main() {
// 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)");
let save_path = env::var("BRZ_SAVE_PATH").expect("missing BRZ_SAVE_PATH! this should be a path where uploads are saved to disk (ex: /srv/uploads, C:\\brzuploads)");
let upload_key = env::var("BRZ_UPLOAD_KEY").unwrap_or_default();
let cache_max_length = env::var("BRZ_CACHE_UPL_MAX_LENGTH").expect("missing BRZ_CACHE_UPL_MAX_LENGTH! this is the max length an upload can be in bytes before it won't be cached (ex: 80000000 for 80MB)");
let cache_upl_lifetime = env::var("BRZ_CACHE_UPL_LIFETIME").expect("missing BRZ_CACHE_UPL_LIFETIME! this indicates how long an upload will stay in cache (ex: 1800 for 30 minutes, 60 for 1 minute)");
let cache_scan_freq = env::var("BRZ_CACHE_SCAN_FREQ").expect("missing BRZ_CACHE_SCAN_FREQ! this is the frequency of full cache scans, which scan for and remove expired uploads (ex: 60 for 1 minute)");
@ -39,13 +40,19 @@ async fn main() {
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");
if !save_path.exists() || !save_path.is_dir() {
panic!("the save path does not exist or is not a directory. this is invalid");
panic!("the save path does not exist or is not a directory! this is invalid");
}
if upload_key.is_empty() {
// i would prefer this to be a warning but the default log level hides those
error!("upload key is empty! no key will be required for uploading new files");
}
// create engine
let engine = Engine::new(
base_url,
save_path,
upload_key,
cache_max_length,
cache_upl_lifetime,
cache_scan_freq,
@ -71,7 +78,7 @@ async fn shutdown_signal() {
let ctrl_c = async {
signal::ctrl_c()
.await
.expect("failed to add ctrl-c handler");
.expect("failed to add SIGINT handler");
};
#[cfg(unix)]

21
src/new.rs
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@ -4,7 +4,7 @@ use axum::{
extract::{BodyStream, Query, State},
http::HeaderValue,
};
use hyper::{HeaderMap, StatusCode, header};
use hyper::{header, HeaderMap, StatusCode};
#[axum::debug_handler]
pub async fn new(
@ -13,12 +13,21 @@ pub async fn new(
Query(params): Query<HashMap<String, String>>,
stream: BodyStream,
) -> Result<String, StatusCode> {
if !params.contains_key("name") {
let original_name = params.get("name");
// the original file name wasn't given, so i can't work out what the extension should be
if original_name.is_none() {
return Err(StatusCode::BAD_REQUEST);
}
let original_name = params.get("name").unwrap();
let original_path = PathBuf::from(original_name);
let key = params.get("key");
// check upload key, if i need to
if !engine.upload_key.is_empty() && key.unwrap_or(&String::new()) != &engine.upload_key {
return Err(StatusCode::FORBIDDEN);
}
let original_path = PathBuf::from(original_name.unwrap());
let path = engine.gen_path(&original_path).await;
let name = path
@ -29,6 +38,7 @@ pub async fn new(
let url = format!("{}/p/{}", engine.base_url, name);
// read and parse content-length, and if it fails just assume it's really high so it doesn't cache
let content_length = headers
.get(header::CONTENT_LENGTH)
.unwrap_or(&HeaderValue::from_static(""))
@ -37,9 +47,10 @@ pub async fn new(
.unwrap()
.unwrap_or(usize::MAX);
// pass it off to the engine to be processed!
engine
.process_upload(path, name, content_length, stream)
.await;
Ok(url)
}

7
src/view.rs
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@ -20,8 +20,8 @@ pub enum ViewSuccess {
}
pub enum ViewError {
NotFound,
InternalServerError,
NotFound, // 404
InternalServerError, // 500
}
impl IntoResponse for ViewSuccess {
@ -80,9 +80,10 @@ pub async fn view(
.into_iter()
.any(|x| !matches!(x, Component::Normal(_)))
{
warn!(target: "view", "a request attempted path traversal");
warn!("a request attempted path traversal");
return Err(ViewError::NotFound);
}
// get result from the engine!
engine.get_upload(&original_path).await
}