Finish the auth handler and create app auth stubs

file-service/Cargo.toml

@@ -7,29 +7,28 @@ edition = "2018"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-build_html  = { version = "2" }
-chrono      = { version = "0.4", features = ["serde"] }
-hex-string  = "0.1.0"
-http        = { version = "0.2" }
-image       = "0.23.5"
-iron        = "0.6.1"
-logger      = "*"
-mime        = "0.3.16"
-mime_guess  = "2.0.3"
-mustache    = "0.9.0"
-orizentic   = { path = "../orizentic" }
-params      = "*"
-router      = "*"
-serde_json  = "*"
-serde       = { version = "1.0", features = ["derive"] }
-sha2        = "0.10"
-thiserror   = "1.0.20"
-tokio       = { version = "1", features = [ "full" ] }
-uuid        = { version = "0.4", features = [ "serde", "v4" ] }
-warp        = { version = "0.3" }
-pretty_env_logger = { version = "0.5" }
-log         = { version = "0.4" }
-bytes       = { version = "1" }
-futures-util    = { version = "0.3" }
-cool_asserts = { version = "2" }
-tempdir     = { version = "0.3" }
+build_html          = { version = "2" }
+bytes               = { version = "1" }
+chrono              = { version = "0.4", features = ["serde"] }
+futures-util        = { version = "0.3" }
+hex-string          = "0.1.0"
+http                = { version = "0.2" }
+image               = "0.23.5"
+logger              = "*"
+log                 = { version = "0.4" }
+mime                = "0.3.16"
+mime_guess          = "2.0.3"
+pretty_env_logger   = { version = "0.5" }
+serde_json          = "*"
+serde               = { version = "1.0", features = ["derive"] }
+sha2                = "0.10"
+sqlx                = { version = "0.7", features = [ "runtime-tokio", "sqlite" ] }
+thiserror           = "1.0.20"
+tokio               = { version = "1", features = [ "full" ] }
+uuid                = { version = "0.4", features = [ "serde", "v4" ] }
+warp                = { version = "0.3" }
+
+[dev-dependencies]
+cool_asserts        = { version = "2" }
+tempdir             = { version = "0.3" }
+

file-service/src/handlers.rs

@@ -0,0 +1,123 @@
+use build_html::Html;
+use http::{Error, StatusCode};
+use std::{collections::HashMap, future::Future};
+use warp::http::Response;
+
+use crate::{pages, App, AuthToken, FileHandle, FileId, FileInfo, ReadFileError, SessionToken};
+
+pub async fn handle_index(
+    app: App,
+    token: Option<SessionToken>,
+) -> Result<Response<String>, Error> {
+    match token {
+        Some(token) => match app.auth_session(token).await {
+            Ok(_) => render_gallery_page(app).await,
+            Err(err) => render_auth_page(Some(format!("authentication refused: {:?}", err))),
+        },
+        None => render_auth_page(None),
+    }
+}
+
+pub fn render_auth_page(message: Option<String>) -> Result<Response<String>, Error> {
+    Response::builder()
+        .status(StatusCode::OK)
+        .body(pages::auth(message).to_html_string())
+}
+
+pub async fn render_gallery_page(app: App) -> Result<Response<String>, Error> {
+    match app.list_files().await {
+        Ok(ids) => {
+            let mut files = vec![];
+            for id in ids.into_iter() {
+                let file = app.get_file(&id).await;
+                files.push(file);
+            }
+            Response::builder()
+                .header("content-type", "text/html")
+                .status(StatusCode::OK)
+                .body(pages::gallery(files).to_html_string())
+        }
+        Err(_) => Response::builder()
+            .header("content-type", "text/html")
+            .status(StatusCode::INTERNAL_SERVER_ERROR)
+            .body("".to_owned()),
+    }
+}
+
+pub async fn thumbnail(
+    app: App,
+    id: String,
+    old_etags: Option<String>,
+) -> Result<Response<Vec<u8>>, Error> {
+    match app.get_file(&FileId::from(id)).await {
+        Ok(file) => serve_file(file.info.clone(), || file.thumbnail(), old_etags),
+        Err(_err) => Response::builder()
+            .status(StatusCode::NOT_FOUND)
+            .body(vec![]),
+    }
+}
+
+pub async fn file(
+    app: App,
+    id: String,
+    old_etags: Option<String>,
+) -> Result<Response<Vec<u8>>, Error> {
+    match app.get_file(&FileId::from(id)).await {
+        Ok(file) => serve_file(file.info.clone(), || file.thumbnail(), old_etags),
+        Err(_err) => Response::builder()
+            .status(StatusCode::NOT_FOUND)
+            .body(vec![]),
+    }
+}
+
+pub async fn handle_auth(
+    app: App,
+    form: HashMap<String, String>,
+) -> Result<http::Response<String>, Error> {
+    match form.get("token") {
+        Some(token) => match app
+            .auth_token(AuthToken::from(AuthToken::from(token.clone())))
+            .await
+        {
+            Ok(_session_token) => render_gallery_page(app).await,
+            Err(_) => render_auth_page(Some(format!("invalid auth token"))),
+        },
+        None => render_auth_page(Some(format!("no token available"))),
+    }
+}
+
+pub async fn handle_upload(
+    _app: App,
+    _token: SessionToken,
+) -> Result<http::Response<String>, Error> {
+    println!("handle_upload");
+    Response::builder()
+        .status(StatusCode::NOT_IMPLEMENTED)
+        .body("".to_owned())
+}
+
+fn serve_file<F>(
+    info: FileInfo,
+    file: F,
+    old_etags: Option<String>,
+) -> http::Result<http::Response<Vec<u8>>>
+where
+    F: FnOnce() -> Result<Vec<u8>, ReadFileError>,
+{
+    match old_etags {
+        Some(old_etags) if old_etags != info.hash => Response::builder()
+            .header("content-type", info.file_type)
+            .status(StatusCode::NOT_MODIFIED)
+            .body(vec![]),
+        _ => match file() {
+            Ok(content) => Response::builder()
+                .header("content-type", info.file_type)
+                .header("etag", info.hash)
+                .status(StatusCode::OK)
+                .body(content),
+            Err(_) => Response::builder()
+                .status(StatusCode::INTERNAL_SERVER_ERROR)
+                .body(vec![]),
+        },
+    }
+}

file-service/src/main.rs

@@ -1,250 +1,46 @@
 #[macro_use]
 extern crate log;
 
+use handlers::{file, handle_auth, handle_upload, thumbnail};
 use http::status::StatusCode;
 // use mustache::{compile_path, Template};
 // use orizentic::{Permissions, ResourceName, Secret};
-use build_html::Html;
 use bytes::Buf;
 use futures_util::StreamExt;
 use std::{
     collections::HashMap,
+    convert::Infallible,
     io::Read,
     net::{IpAddr, Ipv4Addr, SocketAddr},
     path::PathBuf,
     sync::{Arc, RwLock},
 };
-use warp::{filters::multipart::Part, Filter};
+use store::Username;
+use warp::{filters::multipart::Part, Filter, Rejection};
 
-// mod cookies;
+mod handlers;
 mod html;
-// mod middleware;
 mod pages;
 mod store;
 
-pub use store::{FileHandle, FileId, FileInfo, ReadFileError, Store};
+pub use handlers::handle_index;
+pub use store::{
+    App, AuthDB, AuthToken, FileHandle, FileId, FileInfo, ReadFileError, SessionToken, Store,
+};
 
 /*
-fn is_admin(resource: &ResourceName, permissions: &Permissions) -> bool {
-    let Permissions(perms) = permissions;
-    ResourceName(String::from(
-        "https://savanni.luminescent-dreams.com/file-service/",
-    )) == *resource
-        && perms.contains(&String::from("admin"))
-}
-
-pub fn compare_etags(info: FileInfo, etag_list: &headers::IfNoneMatch) -> bool {
-    let current_etag = headers::EntityTag::new(false, info.hash);
-    match etag_list {
-        headers::IfNoneMatch::Any => false,
-        headers::IfNoneMatch::Items(lst) => lst.iter().any(|etag| etag.weak_eq(&current_etag)),
+async fn authenticate_user(app: App, auth_token: String) -> Result<Username, warp::Rejection> {
+    match app.auth_session(SessionToken::from(auth_token)).await {
+        Ok(username) => Ok(username),
+        Err(_) => Err(warp::reject::not_found()),
     }
 }
-
-mod files {
-    use super::*;
-
-    pub struct GetHandler {
-        pub app: Arc<RwLock<App>>,
-    }
-
-    impl Handler for GetHandler {
-        fn handle(&self, req: &mut Request) -> IronResult<Response> {
-            let app = self.app.read().unwrap();
-            let capture = req.extensions.get::<Router>().unwrap().clone();
-            let old_etags = req.headers.get::<headers::IfNoneMatch>();
-            match capture.find("id") {
-                Some(id) => {
-                    let info = app.get_metadata(String::from(id));
-                    match (info, old_etags) {
-                        (Ok(info_), Some(if_none_match)) => {
-                            if compare_etags(info_, if_none_match) {
-                                return Ok(Response::with(status::NotModified));
-                            }
-                        }
-                        _ => (),
-                    }
-                    match app.get_file(String::from(id)) {
-                        Ok((info, stream)) => Ok(Response::with((
-                            status::Ok,
-                            Header(headers::ContentType(
-                                info.file_type.parse::<iron::mime::Mime>().unwrap(),
-                            )),
-                            Header(headers::ETag(headers::EntityTag::new(false, info.hash))),
-                            BodyReader(stream),
-                        ))),
-                        Err(_err) => Ok(Response::with(status::NotFound)),
-                    }
-                }
-                _ => Ok(Response::with(status::BadRequest)),
-            }
-        }
-    }
-
-    pub struct GetThumbnailHandler {
-        pub app: Arc<RwLock<App>>,
-    }
-
-    impl Handler for GetThumbnailHandler {
-        fn handle(&self, req: &mut Request) -> IronResult<Response> {
-            let app = self.app.read().unwrap();
-            let capture = req.extensions.get::<Router>().unwrap().clone();
-            let old_etags = req.headers.get::<headers::IfNoneMatch>();
-            match capture.find("id") {
-                Some(id) => {
-                    let info = app.get_metadata(String::from(id));
-                    match (info, old_etags) {
-                        (Ok(info_), Some(if_none_match)) => {
-                            if compare_etags(info_, if_none_match) {
-                                return Ok(Response::with(status::NotModified));
-                            }
-                        }
-                        _ => (),
-                    }
-                    match app.get_thumbnail(id) {
-                        Ok((info, stream)) => Ok(Response::with((
-                            status::Ok,
-                            Header(headers::ContentType(
-                                info.file_type.parse::<iron::mime::Mime>().unwrap(),
-                            )),
-                            Header(headers::ETag(headers::EntityTag::new(false, info.hash))),
-                            BodyReader(stream),
-                        ))),
-                        Err(_err) => Ok(Response::with(status::NotFound)),
-                    }
-                }
-                _ => Ok(Response::with(status::BadRequest)),
-            }
-        }
-    }
-    pub struct PostHandler {
-        pub app: Arc<RwLock<App>>,
-    }
-
-    impl Handler for PostHandler {
-        fn handle(&self, req: &mut Request) -> IronResult<Response> {
-            let mut app = self.app.write().unwrap();
-            let m_token = req.extensions.get::<Authentication>();
-            match m_token {
-                Some(token) => {
-                    if token.check_authorizations(is_admin) {
-                        let params = req.get_ref::<Params>().unwrap();
-                        if let Value::File(f_info) = params.get("file").unwrap() {
-                            match app.add_file(
-                                &f_info.path,
-                                &f_info.filename.clone().map(|fname| PathBuf::from(fname)),
-                            ) {
-                                Ok(_) => Ok(Response::with((
-                                    status::MovedPermanently,
-                                    Redirect(router::url_for(req, "index", HashMap::new())),
-                                ))),
-                                Err(_) => Ok(Response::with(status::InternalServerError)),
-                            }
-                        } else {
-                            Ok(Response::with(status::BadRequest))
-                        }
-                    } else {
-                        Ok(Response::with(status::Forbidden))
-                    }
-                }
-                None => Ok(Response::with(status::Forbidden)),
-            }
-        }
-    }
-
-    pub struct DeleteHandler {
-        pub app: Arc<RwLock<App>>,
-    }
-
-    impl Handler for DeleteHandler {
-        fn handle(&self, req: &mut Request) -> IronResult<Response> {
-            let mut app = self.app.write().unwrap();
-            let capture = req.extensions.get::<Router>().unwrap().clone();
-            let m_token = req.extensions.get::<Authentication>();
-            match m_token {
-                Some(token) => {
-                    if token.check_authorizations(is_admin) {
-                        match capture.find("id") {
-                            Some(id) => match app.delete_file(String::from(id)) {
-                                Ok(()) => Ok(Response::with((
-                                    status::MovedPermanently,
-                                    Redirect(router::url_for(req, "index", HashMap::new())),
-                                ))),
-                                Err(_) => Ok(Response::with(status::InternalServerError)),
-                            },
-                            None => Ok(Response::with(status::BadRequest)),
-                        }
-                    } else {
-                        Ok(Response::with(status::Forbidden))
-                    }
-                }
-                None => Ok(Response::with(status::Forbidden)),
-            }
-        }
-    }
-}
-
-fn css(_: &mut Request) -> IronResult<Response> {
-    let mut css: String = String::from("");
-    File::open("templates/style.css")
-        .unwrap()
-        .read_to_string(&mut css)
-        .unwrap();
-    Ok(Response::with((
-        status::Ok,
-        Header(headers::ContentType(iron::mime::Mime(
-            iron::mime::TopLevel::Text,
-            iron::mime::SubLevel::Css,
-            vec![],
-        ))),
-        css,
-    )))
-}
-
-fn script(_: &mut Request) -> IronResult<Response> {
-    let mut js: String = String::from("");
-    File::open("templates/script.js")
-        .unwrap()
-        .read_to_string(&mut js)
-        .unwrap();
-    Ok(Response::with((
-        status::Ok,
-        Header(headers::ContentType(iron::mime::Mime(
-            iron::mime::TopLevel::Text,
-            iron::mime::SubLevel::Javascript,
-            vec![],
-        ))),
-        js,
-    )))
-}
 */
 
-fn serve_file<F>(
-    info: FileInfo,
-    file: F,
-    old_etags: Option<String>,
-) -> http::Result<http::Response<Vec<u8>>>
-where
-    F: FnOnce() -> Result<Vec<u8>, ReadFileError>,
-{
-    match old_etags {
-        Some(old_etags) if old_etags != info.hash => warp::http::Response::builder()
-            .header("content-type", info.file_type)
-            .status(StatusCode::NOT_MODIFIED)
-            .body(vec![]),
-        _ => match file() {
-            Ok(content) => warp::http::Response::builder()
-                .header("content-type", info.file_type)
-                .header("etag", info.hash)
-                .status(StatusCode::OK)
-                .body(content),
-            Err(_) => warp::http::Response::builder()
-                .status(StatusCode::INTERNAL_SERVER_ERROR)
-                .body(vec![]),
-        },
-    }
-}
+/*
+*/
 
+/*
 async fn collect_content(
     mut part: Part,
 ) -> Result<(Option<String>, Option<String>, Vec<u8>), String> {
@@ -261,7 +57,9 @@ async fn collect_content(
         content,
     ))
 }
+*/
 
+/*
 async fn collect_multipart(
     mut stream: warp::filters::multipart::FormData,
 ) -> Result<Vec<(Option<String>, Option<String>, Vec<u8>)>, warp::Error> {
@@ -276,10 +74,12 @@ async fn collect_multipart(
 
     Ok(content)
 }
+*/
 
+/*
 async fn handle_upload(
     form: warp::filters::multipart::FormData,
-    app: Arc<RwLock<Store>>,
+    app: App,
 ) -> warp::http::Result<warp::http::Response<String>> {
     let files = collect_multipart(form).await;
     match files {
@@ -287,7 +87,7 @@ async fn handle_upload(
             for (_, filename, content) in files {
                 match filename {
                     Some(filename) => {
-                        app.write().unwrap().add_file(filename, content).unwrap();
+                        app.add_file(filename, content).unwrap();
                     }
                     None => {
                         return warp::http::Response::builder()
@@ -310,150 +110,85 @@ async fn handle_upload(
         .status(StatusCode::SEE_OTHER)
         .body("".to_owned())
 }
+*/
+
+fn with_app(app: App) -> impl Filter<Extract = (App,), Error = Infallible> + Clone {
+    warp::any().map(move || app.clone())
+}
+
+fn maybe_with_session() -> impl Filter<Extract = (Option<SessionToken>,), Error = Rejection> + Copy
+{
+    warp::any()
+        .and(warp::header::optional::<String>("cookie"))
+        .map(|cookies| {
+            println!("cookies retrieved: {:?}", cookies);
+            None
+        })
+}
+
+fn with_session() -> impl Filter<Extract = (SessionToken,), Error = Rejection> + Copy {
+    warp::any()
+        .and(warp::header::<String>("cookie"))
+        .map(|token: String| SessionToken::from(token))
+}
 
 #[tokio::main]
 pub async fn main() {
-    /*
-    let auth_db_path = std::env::var("ORIZENTIC_DB").unwrap();
-    let secret = Secret(Vec::from(
-        std::env::var("ORIZENTIC_SECRET").unwrap().as_bytes(),
-    ));
-    let auth_middleware = Authentication::new(secret, auth_db_path);
-
-    let mut router = Router::new();
-
-    router.post("/", files::PostHandler { app: app.clone() }, "upload-file");
-
-    router.delete(
-        "/:id",
-        files::DeleteHandler { app: app.clone() },
-        "delete-file",
-    );
-    router.get("/css", css, "styles");
-    router.get("/script", script, "script");
-
-    let mut chain = Chain::new(router);
-    chain.link_before(auth_middleware);
-    chain.link_before(RestForm {});
-
-    Iron::new(chain).http("0.0.0.0:3000").unwrap();
-    */
-
-    /*
-    let root = warp::path!().and(warp::get()).map({
-        || {
-            warp::http::Response::builder()
-                .header("content-type", "text/html")
-                .status(StatusCode::NOT_MODIFIED)
-                .body(())
-        }
-    });
-    let server = warp::serve(root);
-    server
-        .run(SocketAddr::new(IpAddr::V4(Ipv4Addr::new(0, 0, 0, 0)), 8002))
-        .await;
-        */
-
     pretty_env_logger::init();
 
-    let app = Arc::new(RwLock::new(Store::new(PathBuf::from(
-        &std::env::var("FILE_SHARE_DIR").unwrap(),
-    ))));
+    let authdb = AuthDB::new(PathBuf::from(":memory:")).await.unwrap();
+    let store = Store::new(PathBuf::from(&std::env::var("FILE_SHARE_DIR").unwrap()));
 
-    let app_filter = {
+    let app = App::new(authdb, store);
+
+    /*
+    let with_app = {
         let app = app.clone();
         warp::any().map(move || app.clone())
     };
+    */
 
     let log = warp::log("file_service");
+    let root = warp::path!()
+        .and(warp::get())
+        .and(with_app(app.clone()))
+        .and(maybe_with_session())
+        .then(handle_index);
 
-    let root = warp::path!().and(warp::get()).and(app_filter.clone()).map({
-        move |app: Arc<RwLock<Store>>| {
-            info!("root handler");
-            let app = app.read().unwrap();
-            match app.list_files() {
-                Ok(ids) => {
-                    let files = ids
-                        .into_iter()
-                        .map(|id| app.get_file(&id))
-                        .collect::<Vec<Result<FileHandle, ReadFileError>>>();
-                    warp::http::Response::builder()
-                        .header("content-type", "text/html")
-                        .status(StatusCode::OK)
-                        .body(pages::index(files).to_html_string())
-                }
-                Err(_) => warp::http::Response::builder()
-                    .header("content-type", "text/html")
-                    .status(StatusCode::INTERNAL_SERVER_ERROR)
-                    .body("".to_owned()),
-            }
-        }
-    });
-
-    let post_upload_handler = warp::path!("upload")
-        .and(warp::post())
-        .and(warp::filters::multipart::form().max_length(1024 * 1024 * 32))
-        .and(app_filter.clone())
-        .then(
-            |form: warp::filters::multipart::FormData, app: Arc<RwLock<Store>>| {
-                handle_upload(form, app)
-            },
-        );
-
-    /*
-    let post_delete_handler = warp::path!(String)
+    let auth = warp::path!("auth")
         .and(warp::post())
+        .and(with_app(app.clone()))
         .and(warp::filters::body::form())
-        .map(|id: String, form: HashMap<String, String>| {
-            info!("post_delete {}", id);
-            info!("form: {:?}", form);
-            warp::http::Response::builder()
-                .header("location", "/")
-                .status(StatusCode::SEE_OTHER)
-                .body(vec![])
-        });
-        */
+        .then(handle_auth);
+
+    let upload_handler = warp::path!("upload")
+        .and(warp::post())
+        .and(with_app(app.clone()))
+        .and(with_session())
+        .then(handle_upload);
 
     let thumbnail = warp::path!(String / "tn")
         .and(warp::get())
         .and(warp::header::optional::<String>("if-none-match"))
-        .map({
-            let app = app.clone();
-            move |id: String, old_etags: Option<String>| match app
-                .read()
-                .unwrap()
-                .get_file(&FileId::from(id))
-            {
-                Ok(file) => serve_file(file.info.clone(), || file.thumbnail(), old_etags),
-                Err(_err) => warp::http::Response::builder()
-                    .status(StatusCode::NOT_FOUND)
-                    .body(vec![]),
-            }
-        });
+        .and(with_app(app.clone()))
+        .then(move |id, old_etags, app: App| thumbnail(app, id, old_etags));
 
     let file = warp::path!(String)
         .and(warp::get())
         .and(warp::header::optional::<String>("if-none-match"))
-        .map({
-            let app = app.clone();
-            move |id: String, old_etags: Option<String>| match app
-                .read()
-                .unwrap()
-                .get_file(&FileId::from(id))
-            {
-                Ok(file) => serve_file(file.info.clone(), || file.content(), old_etags),
-                Err(_err) => warp::http::Response::builder()
-                    .status(StatusCode::NOT_FOUND)
-                    .body(vec![]),
-            }
-        });
+        .and(with_app(app.clone()))
+        .then(move |id, old_etags, app: App| file(app, id, old_etags));
 
     let server = warp::serve(
-        root.or(post_upload_handler)
-            .or(thumbnail)
-            .or(file)
-            .with(log),
+        root.or(auth).with(log), /*
+                                 root.or(auth)
+                                     .or(thumbnail)
+                                     .or(file)
+                                     .or(upload_handler)
+                                     .with(log),
+                                     */
     );
+
     server
         .run(SocketAddr::new(IpAddr::V4(Ipv4Addr::new(0, 0, 0, 0)), 8002))
         .await;

file-service/src/pages.rs

@@ -4,7 +4,22 @@ use crate::{
 };
 use build_html::{self, Container, ContainerType, Html, HtmlContainer};
 
-pub fn index(handles: Vec<Result<FileHandle, ReadFileError>>) -> build_html::HtmlPage {
+pub fn auth(_message: Option<String>) -> build_html::HtmlPage {
+    build_html::HtmlPage::new()
+        .with_title("Authentication")
+        .with_html(
+            Form::new()
+                .with_path("/auth")
+                .with_method("post")
+                .with_container(
+                    Container::new(ContainerType::Div)
+                        .with_html(Input::new("token", "token").with_id("for-token-input"))
+                        .with_html(Label::new("for-token-input", "Authentication Token")),
+                ),
+        )
+}
+
+pub fn gallery(handles: Vec<Result<FileHandle, ReadFileError>>) -> build_html::HtmlPage {
     let mut page = build_html::HtmlPage::new()
         .with_title("Admin list of files")
         .with_header(1, "Admin list of files")

file-service/src/store/mod.rs

@@ -1,7 +1,9 @@
 use serde::{Deserialize, Serialize};
+use sqlx::sqlite::SqlitePool;
 use std::collections::HashSet;
-use std::{ops::Deref, path::PathBuf};
+use std::{ops::Deref, path::PathBuf, sync::Arc};
 use thiserror::Error;
+use tokio::sync::RwLock;
 
 mod filehandle;
 mod fileinfo;
@@ -57,6 +59,117 @@ pub enum ReadFileError {
     IOError(#[from] std::io::Error),
 }
 
+#[derive(Debug, Error)]
+pub enum AuthError {
+    #[error("database failed")]
+    SqlError,
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize, Hash, PartialEq, Eq)]
+pub struct Username(String);
+
+impl From<String> for Username {
+    fn from(s: String) -> Self {
+        Self(s)
+    }
+}
+
+impl From<&str> for Username {
+    fn from(s: &str) -> Self {
+        Self(s.to_owned())
+    }
+}
+
+impl From<Username> for PathBuf {
+    fn from(s: Username) -> Self {
+        Self::from(&s)
+    }
+}
+
+impl From<&Username> for PathBuf {
+    fn from(s: &Username) -> Self {
+        let Username(s) = s;
+        Self::from(s)
+    }
+}
+
+impl Deref for Username {
+    type Target = String;
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize, Hash, PartialEq, Eq)]
+pub struct AuthToken(String);
+
+impl From<String> for AuthToken {
+    fn from(s: String) -> Self {
+        Self(s)
+    }
+}
+
+impl From<&str> for AuthToken {
+    fn from(s: &str) -> Self {
+        Self(s.to_owned())
+    }
+}
+
+impl From<AuthToken> for PathBuf {
+    fn from(s: AuthToken) -> Self {
+        Self::from(&s)
+    }
+}
+
+impl From<&AuthToken> for PathBuf {
+    fn from(s: &AuthToken) -> Self {
+        let AuthToken(s) = s;
+        Self::from(s)
+    }
+}
+
+impl Deref for AuthToken {
+    type Target = String;
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize, Hash, PartialEq, Eq)]
+pub struct SessionToken(String);
+
+impl From<String> for SessionToken {
+    fn from(s: String) -> Self {
+        Self(s)
+    }
+}
+
+impl From<&str> for SessionToken {
+    fn from(s: &str) -> Self {
+        Self(s.to_owned())
+    }
+}
+
+impl From<SessionToken> for PathBuf {
+    fn from(s: SessionToken) -> Self {
+        Self::from(&s)
+    }
+}
+
+impl From<&SessionToken> for PathBuf {
+    fn from(s: &SessionToken) -> Self {
+        let SessionToken(s) = s;
+        Self::from(s)
+    }
+}
+
+impl Deref for SessionToken {
+    type Target = String;
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
 #[derive(Clone, Debug, Serialize, Deserialize, Hash, PartialEq, Eq)]
 pub struct FileId(String);
 
@@ -104,6 +217,69 @@ impl FileRoot for Context {
     }
 }
 
+#[derive(Clone)]
+pub struct App {
+    authdb: Arc<RwLock<AuthDB>>,
+    store: Arc<RwLock<Store>>,
+}
+
+impl App {
+    pub fn new(authdb: AuthDB, store: Store) -> Self {
+        Self {
+            authdb: Arc::new(RwLock::new(authdb)),
+            store: Arc::new(RwLock::new(store)),
+        }
+    }
+
+    pub async fn auth_token(&self, token: AuthToken) -> Result<SessionToken, AuthError> {
+        self.authdb.read().await.auth_token(token).await
+    }
+
+    pub async fn auth_session(&self, token: SessionToken) -> Result<Username, AuthError> {
+        self.authdb.read().await.auth_session(token).await
+    }
+
+    pub async fn list_files(&self) -> Result<HashSet<FileId>, ReadFileError> {
+        self.store.read().await.list_files()
+    }
+
+    pub async fn get_file(&self, id: &FileId) -> Result<FileHandle, ReadFileError> {
+        self.store.read().await.get_file(id)
+    }
+
+    pub async fn add_file(
+        &self,
+        filename: String,
+        content: Vec<u8>,
+    ) -> Result<FileHandle, WriteFileError> {
+        self.store.write().await.add_file(filename, content)
+    }
+}
+
+#[derive(Clone)]
+pub struct AuthDB {
+    pool: SqlitePool,
+}
+
+impl AuthDB {
+    pub async fn new(path: PathBuf) -> Result<Self, sqlx::Error> {
+        let pool = SqlitePool::connect(&format!("sqlite://{}", path.to_str().unwrap())).await?;
+        Ok(Self { pool })
+    }
+
+    async fn auth_token(&self, _token: AuthToken) -> Result<SessionToken, AuthError> {
+        unimplemented!()
+    }
+
+    async fn auth_session(&self, _token: SessionToken) -> Result<Username, AuthError> {
+        /*
+        let conn = self.pool.acquire().await.map_err(|_| AuthError::SqlError)?;
+        conn.transaction(|tr| {})
+        */
+        unimplemented!()
+    }
+}
+
 pub struct Store {
     files_root: PathBuf,
 }