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/target
/shares

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[package]
name = "tinyfui"
version = "0.1.0"
edition = "2021"
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
[dependencies]
axum = "0.5.11"
base64 = "0.13.0"
clap = { version = "3.2.8", features = ["derive"] }
color-eyre = "0.6.1"
getrandom = "0.2.7"
mime = "0.3.16"
mime_guess = "2.0.4"
serde = { version = "1.0.138", features = ["derive"] }
serde_json = "1.0.82"
tera = "1.16.0"
tokio = { version = "1.19.2", features = ["full"] }
tower-http = { version = "0.3.4", features = ["trace", "fs"] }
tower-service = "0.3.2"
tracing = "0.1.35"
tracing-subscriber = { version = "0.3.14", features = ["env-filter"] }

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GNU AFFERO GENERAL PUBLIC LICENSE
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programs; see section 13 for the specific requirements.
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary. For
more information on this, and how to apply and follow the GNU AGPL, see <https://www.gnu.org/licenses/>.

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# TinyFUI
A tiny web File UI
## Using
### Setup
1. Download or compile the `tinyfui` binary.
2. Download or create your own templates and styles for the share pages. Static assets can be placed in the `assets/` folder, and templates go in `templates/`. See the example templates in this repository for details.
1. Create a folder named `shares/` to store all your shares.
2. Run the server with `tinyfui web --listen 127.0.0.1:3000`
### Creating a share
1. Run `tinyfui create-share "<name>"`
2. Add your files to the newly created folder in `shares/`
3. Run `tinyfui update-shares` to register the new files. You must re-run this when you update the contents of any of your shares.

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:root {
--background: #13092b;
--background-2: #090f2b;
--foreground: #ddd;
--accent: #f9027a;
}
body {
font-family: 'Poppins', sans-serif;
background-color: var(--background);
background-attachment: fixed;
background-position: center;
color: var(--foreground);
margin: 0;
}
.page-container {
display: flex;
align-items: center;
flex-direction: column;
max-width: 100vw;
}
.content {
margin: 16px;
padding: 8px 16px;
width: calc(100vw - 32px);
max-width: 720px;
flex: 1;
background-color: var(--background-2);
border: 1px solid var(--accent);
border-radius: 4px;
}
.file-content {
background-color: white;
width: 100%;
}
iframe.file-content {
resize: vertical;
}
a {
color: inherit;
}
.nav-buttons {
display: flex;
flex-direction: row;
justify-content: space-around;
width: 100%;
}
.nav-button {
flex: 1;
display: grid;
place-content: center;
padding: 8px 0;
text-decoration: none;
}
.nav-button:hover {
text-decoration: underline;
}

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mod routes;
mod share;
mod templates;
use std::{net::SocketAddr, path::Path, fs::{self, File}};
use axum::Extension;
use clap::Parser;
use tera::Tera;
use tower_http::trace::TraceLayer;
use tracing_subscriber::prelude::*;
use crate::share::{ShareInfo, ShareFile};
#[derive(clap::Parser)]
enum Cli {
Web {
#[clap(long, short)]
listen: SocketAddr,
},
CreateShare {
#[clap(long, short)]
update: bool,
name: String,
},
UpdateShares,
}
#[tokio::main]
async fn main() -> color_eyre::Result<()> {
color_eyre::install()?;
tracing_subscriber::registry()
.with(tracing_subscriber::filter::EnvFilter::new(
std::env::var("RUST_LOG").unwrap_or_else(|_| "debug,hyper=info".into()),
))
.with(tracing_subscriber::fmt::layer())
.init();
let cli = Cli::parse();
match cli {
Cli::Web { listen } => web_main(listen).await,
Cli::CreateShare { name, update } => create_share(&name, update).await,
Cli::UpdateShares => update_shares().await,
}
}
async fn web_main(listen: SocketAddr) -> color_eyre::Result<()> {
let tera = Tera::new("templates/**/*.html")?;
let app = routes::routes()
.layer(TraceLayer::new_for_http())
.layer(Extension(tera));
axum::Server::bind(&listen)
.serve(app.into_make_service())
.await?;
Ok(())
}
async fn create_share(name: &str, update: bool) -> color_eyre::Result<()> {
let mut secret_buf = [0u8; 32];
getrandom::getrandom(&mut secret_buf)?;
let secret = base64::encode_config(secret_buf, base64::URL_SAFE_NO_PAD);
let share_name = name.replace(' ', "-").to_lowercase();
let shares_path = Path::new("shares");
if !shares_path.exists() {
tracing::error!("shares/ directory does not exist!");
return Ok(());
}
let share_path = shares_path.join(&share_name);
if !share_path.exists() {
fs::create_dir_all(&share_path)?;
}
let share_info_path = share_path.join(".share.json");
if share_info_path.exists() {
tracing::error!("share named {share_name} already exists!");
return Ok(());
}
let share_info = ShareInfo {
name: name.to_owned(),
token: secret.clone(),
files: vec![],
};
{
let mut f = File::create(share_info_path)?;
serde_json::to_writer_pretty(&mut f, &share_info)?;
}
if update {
update_share(&share_path).await?;
}
tracing::info!("Success! Created a new share in {share_path:?}. The access token is {secret:?}");
Ok(())
}
async fn update_shares() -> color_eyre::Result<()> {
let shares_dir = Path::new("shares");
if !shares_dir.exists() {
tracing::error!("shares directory does not exist");
return Ok(());
}
for entry in fs::read_dir(shares_dir)? {
let entry = entry?;
if !entry.file_type()?.is_dir() {
continue;
}
let share_path = entry.path();
update_share(&share_path).await?;
}
Ok(())
}
async fn update_share(path: &Path) -> color_eyre::Result<()> {
let share_info_path = path.join(".share.json");
let share_info = tokio::fs::read_to_string(&share_info_path).await?;
let mut share_info: ShareInfo = serde_json::from_str(&share_info)?;
tracing::info!(?path, ?share_info, "loaded share info");
tracing::info!(?path, "checking for missing files");
for file in &share_info.files {
let filepath = path.join(file.name());
if !filepath.exists() {
tracing::warn!(?filepath, "file no longer exists");
}
}
tracing::info!(?path, "checking for new files");
for entry in fs::read_dir(&path)? {
let entry = entry?;
if !entry.file_type()?.is_file() {
continue;
}
if let Some(filename) = entry.file_name().to_str() {
if filename == ".share.json" {
continue;
}
if !share_info.files.iter().any(|file| file.name() == filename) {
tracing::info!(?path, ?filename, "adding to index");
let is_image = mime_guess::from_path(entry.path())
.first_or_octet_stream()
.type_() == mime::IMAGE;
share_info.files.push(if is_image {
ShareFile::Image(filename.to_owned())
} else {
ShareFile::File(filename.to_owned())
});
}
} else {
let path = entry.path();
tracing::warn!(?path, "file with odd name");
}
}
tracing::info!(?path, "sorting file list");
share_info.files.sort_by_key(|e| e.name());
tracing::info!(?path, "writing updated share info");
let mut out = File::create(&share_info_path)?;
serde_json::to_writer_pretty(&mut out, &share_info)?;
Ok(())
}

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use std::path::Path;
use axum::{Router, routing::any_service, http::StatusCode};
use tower_http::services::ServeDir;
mod share;
pub fn routes() -> Router {
Router::new()
.nest("/assets", any_service(ServeDir::new(&Path::new("assets")))
.handle_error(|err: std::io::Error| async move {
tracing::error!("unhandled error in static file server: {}", err);
(StatusCode::INTERNAL_SERVER_ERROR, "internal server error")
})
)
.nest("/share", share::routes())
}

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use std::path::{self, PathBuf};
use axum::{response::IntoResponse, extract::{Path, FromRequest, Query}, async_trait, http::{StatusCode, Request}, Router, routing::get, body::Body};
use serde::{Serialize, Deserialize};
use tera::Context;
use tokio::fs;
use tower_http::services::ServeFile;
use tower_service::Service;
use crate::{templates::{Renderer, TemplateRenderer}, share::ShareInfo};
struct Share {
info: ShareInfo,
path: PathBuf,
}
#[async_trait]
impl<B> FromRequest<B> for Share where B: Send {
type Rejection = StatusCode;
async fn from_request(req: &mut axum::extract::RequestParts<B>) -> Result<Self, Self::Rejection> {
#[derive(Deserialize)]
struct P {
share: String,
}
#[derive(Deserialize)]
struct Q {
token: String,
}
let Path(P { share }) = Path::<P>::from_request(req).await.unwrap();
let Query(Q { token }) = Query::<Q>::from_request(req).await.map_err(|_| StatusCode::NOT_FOUND)?;
async {
let share_dir = path::Path::new("shares")
.join(share);
if share_dir.exists() {
let share_info = share_dir.join(".share.json");
let share_info = fs::read_to_string(share_info).await?;
let share_info: ShareInfo = serde_json::from_str(&share_info)?;
if token == share_info.token {
Ok::<_, color_eyre::Report>(Some(Self {
info: share_info,
path: share_dir,
}))
} else {
Ok(None)
}
} else {
Ok::<_, color_eyre::Report>(None)
}
}.await
.map_err(|e| {
tracing::error!(%e, "failed to load share info");
StatusCode::INTERNAL_SERVER_ERROR
})
.and_then(|share| share.ok_or(StatusCode::NOT_FOUND))
}
}
async fn index(share: Share, tera: Renderer) -> impl IntoResponse {
tera.response("share/index.html", Context::from_serialize(&share.info).unwrap())
}
#[derive(Deserialize)]
struct RawPath {
file_id: usize,
}
async fn raw(share: Share, path: Path<RawPath>, req: Request<Body>) -> Result<impl IntoResponse, StatusCode> {
if let Some(file) = share.info.files.get(path.file_id) {
let path = share.path.join(file.name());
ServeFile::new(path).call(req)
.await
.map_err(|e| {
tracing::error!(%e, "failed to serve static file");
StatusCode::INTERNAL_SERVER_ERROR
})
} else {
Err(StatusCode::NOT_FOUND)
}
}
async fn file(share: Share, path: Path<RawPath>, tera: Renderer) -> Result<impl IntoResponse, StatusCode> {
if let Some(file) = share.info.files.get(path.file_id) {
#[derive(Serialize)]
struct File {
name: String,
index: usize,
is_image: bool,
}
let mut context = Context::new();
context.insert("share", &share.info);
context.insert("file_count", &share.info.files.len());
context.insert("file", &File {
name: file.name(),
is_image: file.is_image(),
index: path.file_id,
});
tera.response("share/file.html", context)
} else {
Err(StatusCode::NOT_FOUND)
}
}
pub fn routes() -> Router {
Router::new()
.route("/:share/", get(index))
.route("/:share/:file_id", get(file))
.route("/:share/raw/:file_id", get(raw))
}

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use serde::{Deserialize, Serialize};
#[derive(Debug, Deserialize, Serialize)]
pub struct ShareInfo {
pub name: String,
pub token: String,
pub files: Vec<ShareFile>,
}
#[derive(Debug, Deserialize, Serialize)]
#[serde(rename_all = "snake_case", tag = "type", content = "path")]
pub enum ShareFile {
File(String),
Image(String),
}
impl ShareFile {
pub fn name(&self) -> String {
match self {
ShareFile::File(name) => name.clone(),
ShareFile::Image(name) => name.clone(),
}
}
pub fn is_image(&self) -> bool {
match self {
ShareFile::Image(_) => true,
_ => false,
}
}
}

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use axum::{response::Html, http::StatusCode, Extension};
use tera::Tera;
pub trait TemplateRenderer {
fn response(&self, name: &str, context: tera::Context) -> Result<Html<String>, StatusCode>;
}
impl TemplateRenderer for Tera {
fn response(&self, name: &str, context: tera::Context) -> Result<Html<String>, StatusCode> {
let result = self.render(name, &context);
result
.map(|rendered| Html(rendered))
.map_err(|e| {
tracing::error!("failed to render template {:?}", e);
StatusCode::INTERNAL_SERVER_ERROR
})
}
}
pub type Renderer = Extension<Tera>;

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
{% block head %}
<link rel="stylesheet" href="https://unpkg.com/@fontsource/poppins@4.5.8/index.css">
<link rel="stylesheet" href="/assets/style/index.css" />
<title>{% block title %}{% endblock title %}</title>
{% endblock head %}
</head>
<body>
<div class="page-container">
{% block content %}{% endblock %}
</div>
</body>
</html>

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{% extends "base.html" %}
{% block title %}
{{ share.name }} - {{ file.name }}
{% endblock %}
{% block content %}
<main class="content">
<h1>{{ share.name }}</h1>
<h2>
{{ file.name }}
</h2>
{% if file.is_image %}
<img class="file-content" src="raw/{{ file.index }}?token={{ share.token }}">
{% else %}
<iframe class="file-content" src="raw/{{ file.index }}?token={{ share.token }}"></iframe>
{% endif %}
<div class="nav-buttons">
{% if file.index > 0 %}
<a class="nav-button" href="{{ file.index - 1 }}?token={{ share.token }}">&larr; Previous</a>
{% else %}
<div class="nav-button"></div>
{% endif %}
{% if file.index < file_count - 1 %}
<a class="nav-button" href="{{ file.index + 1 }}?token={{ share.token }}">Next &rarr;</a>
{% else %}
<div class="nav-button"></div>
{% endif %}
</div>
</main>
{% endblock %}

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{% extends "base.html" %}
{% block title %}
{{ name }}
{% endblock %}
{% block content %}
<main class="content">
<h1>{{ name }}</h1>
<h2>
Contents of this share:
</h2>
<ul>
{% for file in files %}
<li>
<a href="{{ loop.index0 }}?token={{ token }}">
{{ file.path }}
</a>
</li>
{% endfor %}
</ul>
</main>
{% endblock %}