From fdd418ec3e475536ada6d2274291541bfbd33adb Mon Sep 17 00:00:00 2001
From: neri <neri@ctdo.de>
Date: Wed, 8 Jul 2020 21:26:46 +0200
Subject: [PATCH] Initial commit

---
 .env               |    1 +
 .gitignore         |    2 +
 Cargo.lock         | 2440 ++++++++++++++++++++++++++++++++++++++++++++
 Cargo.toml         |   21 +
 src/main.rs        |  124 +++
 src/multipart.rs   |   21 +
 static/index.css   |   10 +
 static/index.html  |   18 +
 static/upload.html |   18 +
 9 files changed, 2655 insertions(+)
 create mode 100644 .env
 create mode 100644 .gitignore
 create mode 100644 Cargo.lock
 create mode 100644 Cargo.toml
 create mode 100644 src/main.rs
 create mode 100644 src/multipart.rs
 create mode 100644 static/index.css
 create mode 100644 static/index.html
 create mode 100644 static/upload.html

diff --git a/.env b/.env
new file mode 100644
index 0000000..c8e0d42
--- /dev/null
+++ b/.env
@@ -0,0 +1 @@
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diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..51124b9
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+/target
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diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000..2918273
--- /dev/null
+++ b/Cargo.lock
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diff --git a/Cargo.toml b/Cargo.toml
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index 0000000..6bba9f2
--- /dev/null
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+log = "0.4.8"
+actix-files = "0.2.2"
+async-std = "1.6.2"
+actix-multipart = "0.2.0"
+futures = "0.3.5"
+mime = "0.3.16"
+rand = "0.7.3"
+chrono = "0.4.13"
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..317f6e5
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,124 @@
+mod multipart;
+
+use actix_files::Files;
+use actix_multipart::Multipart;
+use actix_web::{error, middleware, web, App, Error, HttpResponse, HttpServer};
+use async_std::prelude::*;
+use chrono::{prelude::*, Duration};
+use futures::{StreamExt, TryStreamExt};
+use sqlx::postgres::PgPool;
+use std::env;
+
+const INDEX_HTML: &str = include_str!("../static/index.html");
+const UPLOAD_HTML: &str = include_str!("../static/upload.html");
+
+async fn index() -> Result<HttpResponse, Error> {
+    Ok(HttpResponse::Ok()
+        .content_type("text/html")
+        .body(INDEX_HTML))
+}
+
+async fn upload(mut payload: Multipart, db: web::Data<PgPool>) -> Result<HttpResponse, Error> {
+    let id = format!("{:x?}", rand::random::<u32>());
+    let filename = format!("files/{}", id);
+    let mut timeout: Option<String> = None;
+    let mut kind: Option<String> = None;
+
+    while let Ok(Some(mut field)) = payload.try_next().await {
+        let name = multipart::get_field_name(&field)?;
+        match name.as_str() {
+            "validity_secs" => {
+                timeout = multipart::read_string(field)
+                    .await
+                    .map(Some)
+                    .map_err(error::ErrorInternalServerError)?;
+            }
+            "kind" => {
+                kind = multipart::read_string(field)
+                    .await
+                    .map(Some)
+                    .map_err(error::ErrorInternalServerError)?;
+            }
+            "content" => {
+                let mut file = async_std::fs::File::create(&filename)
+                    .await
+                    .map_err(error::ErrorInternalServerError)?;
+
+                while let Some(chunk) = field.next().await {
+                    let data = chunk.unwrap();
+                    file = file.write_all(&data).await.map(|_| file)?;
+                }
+            }
+            _ => {}
+        };
+    }
+
+    println!("timeout = {:?}, kind = {:?}", timeout, kind);
+
+    if timeout == None || kind == None {
+        async_std::fs::remove_file(&filename)
+            .await
+            .expect("could not delete file");
+        return Ok(HttpResponse::BadRequest().body("timeout or kind not specified"));
+    }
+
+    let validity_secs = timeout
+        .unwrap()
+        .parse::<i64>()
+        .expect("could not parse validity as int");
+    let valid_till = Local::now() + Duration::seconds(validity_secs);
+    let kind = kind.unwrap();
+
+    sqlx::query("INSERT INTO Files (valid_till, kind) VALUES ($1, $2)")
+        .bind(valid_till)
+        .bind(kind)
+        .execute(db.as_ref())
+        .await
+        .expect("could not insert");
+
+    Ok(HttpResponse::Found()
+        .header("location", format!("/upload/{}", id))
+        .finish())
+}
+
+async fn uploaded(id: web::Path<String>) -> Result<HttpResponse, Error> {
+    let upload_html = UPLOAD_HTML.replace("{id}", &*id);
+    Ok(HttpResponse::Ok()
+        .content_type("text/html")
+        .body(upload_html))
+}
+
+#[actix_rt::main]
+async fn main() -> std::io::Result<()> {
+    std::env::set_var("RUST_LOG", "warn,datatrash=info,actix_web=info");
+    std::env::set_var("DATABASE_URL", "postgresql://localhost");
+    env_logger::init();
+
+    let pool: PgPool = PgPool::builder()
+        .max_size(5) // maximum number of connections in the pool
+        .build(&env::var("DATABASE_URL").expect("DATABASE_URL environement variable not set"))
+        .await
+        .expect("could not create db pool");
+    sqlx::query!("CREATE TABLE IF NOT EXISTS Files ( id serial, valid_till timestamp, kind varchar(255), primary key (id) )")
+        .execute(&pool)
+        .await
+        .expect("could not create table Files");
+
+    log::info!("omnomnom");
+
+    let db = web::Data::new(pool);
+
+    HttpServer::new(move || {
+        App::new()
+            .wrap(middleware::Logger::default())
+            .app_data(db.clone())
+            .service(web::resource("/").route(web::get().to(index)))
+            .service(web::resource("/upload").route(web::post().to(upload)))
+            .service(web::resource("/upload/{id}").route(web::get().to(uploaded)))
+            .service(Files::new("/static", "static").disable_content_disposition())
+            .service(Files::new("/file", "files"))
+    })
+    .bind("0.0.0.0:8000")?
+    .run()
+    .await
+}
diff --git a/src/multipart.rs b/src/multipart.rs
new file mode 100644
index 0000000..c316553
--- /dev/null
+++ b/src/multipart.rs
@@ -0,0 +1,21 @@
+use actix_multipart::Field;
+use futures::StreamExt;
+
+pub fn get_field_name(field: &Field) -> Result<String, actix_web::error::ParseError> {
+    field
+        .content_disposition()
+        .ok_or_else(|| actix_web::error::ParseError::Incomplete)?
+        .get_name()
+        .map(|s| s.to_owned())
+        .ok_or_else(|| actix_web::error::ParseError::Incomplete)
+}
+
+pub async fn read_string(
+    mut field: actix_multipart::Field,
+) -> Result<String, std::string::FromUtf8Error> {
+    let mut data = Vec::new();
+    while let Some(chunk) = field.next().await {
+        data.extend(chunk.unwrap());
+    }
+    String::from_utf8(data)
+}
diff --git a/static/index.css b/static/index.css
new file mode 100644
index 0000000..9db1d1d
--- /dev/null
+++ b/static/index.css
@@ -0,0 +1,10 @@
+body {
+  background-color: #222222;
+}
+
+main {
+  color: #dddddd;
+  font-family: sans;
+  max-width: 1200px;
+  margin: 0 auto;
+}
diff --git a/static/index.html b/static/index.html
new file mode 100644
index 0000000..8cb83cc
--- /dev/null
+++ b/static/index.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <title>datatrash</title>
+    <link href="/static/index.css" rel="stylesheet" />
+  </head>
+  <body>
+    <main>
+      <h1>datatrash</h1>
+      <form action="/upload" method="POST" enctype="multipart/form-data">
+        <input type="file" name="content" />
+        <input type="text" name="validity_secs" />
+        <input type="text" name="kind" />
+        <input type="submit" value="Hochladen" />
+      </form>
+    </main>
+  </body>
+</html>
diff --git a/static/upload.html b/static/upload.html
new file mode 100644
index 0000000..c2ab0b5
--- /dev/null
+++ b/static/upload.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <title>datatrash</title>
+    <link href="/static/index.css" rel="stylesheet" />
+  </head>
+  <body>
+    <main>
+      <h1>datatrash</h1>
+      <p>
+        Uploaded
+        <a href="http://localhost:8000/file/{id}">
+          http://localhost:8000/files/{id}
+        </a>
+      </p>
+    </main>
+  </body>
+</html>