feat: define structure

Reviewed-on: #56
Reviewed-by: kosssi <simon@p4pillon.org>

# Détails

- Rajoute une librairie d'utilitaires crates/utils
- Rajoute des fonctions de gestion des fichiers et dossiers de configuration dans la lib utils, dont une fonction de chargement du fichier de config approprié
- Remplace le chargement d'un .env relatif au CARGO_MANIFEST_DIR de la librairie sesam-vitale par la fonction de chargement de config

La fonction de chargement de config génère une hiérarchie d'emplacements de fichiers de config (.env dans : dossier courant, dossier manifest, dossier système) et charge le "plus proche", afin de permettre d'avoir une configuration stable au niveau système, mais de pouvoir la surcharger facilement en local, en particulier lors de phases de développement).
Pourquoi ?

L'usage de CARGO_MANIFEST_DIR pour trouver le fichier de configuration n'était pas viable, car cette variable d'environnement n'existe que lors d'un lancement via cargo run, mais pas lors d'un appel direct à l'executable buildé.
La nouvelle implémentation est maintenant totalement compatible, autant avec des approches de surcharge en développement que pour de installations pérennes sur un système.

# Documentation

Le chemin standard des fichiers de config, spécifique à chaque OS, est obtenu à l'aide de la librairie directories-rs

Closes #55

.gitea/issue_template/BUG_REPORT.yaml

@@ -24,6 +24,10 @@ body:
       label: Ce problème est il relatif à un ou des modules en particulier ?
       multiple: true
       options:
-        - Clego
-        - Tauri
-        - Axum
+        - Interface utilisateur⋅ice (crates/app)
+        - Encapsulation Tauri (crates/desktop)
+        - Moteur SESAM-Vitale (crates/sesam-vitale)
+        - Librairie utilitaire (crates/utils)
+        - Documentation (docs)
+        - Scripts (scripts)
+        - Autre

.gitignore

@@ -21,3 +21,5 @@ target/
 *.sln
 *.sw?
 
+# Ignore .env files
+.env

.ignore

@@ -0,0 +1,5 @@
+# Ignorer les fichiers dont ne dépent pas la compilation 
+*.md
+tailwind.config.js
+*.example
+scripts

Cargo.toml

@@ -3,5 +3,7 @@ resolver = "2"
 members = [
     "crates/app",
     "crates/sesam-vitale",
-    "crates/desktop"
+    "crates/desktop",
+    "crates/services-sesam-vitale-sys",
+    "crates/utils",
 ]

README.md

@@ -7,29 +7,73 @@ Logiciel de Pharmacie libre et open-source.
 - `app`: Interface du logiciel, servie par un serveur web propulsé par Axum. Utilisable en mode endpoint ou encapsulé dans le client `desktop`
 - `desktop`: Client desktop propulsé par Tauri, encapsulant le serveur web `app`
 - `sesam-vitale`: Bibliothèque de gestion des services SESAM-Vitale (Lecture des cartes CPS et Vitale, téléservices ...)
+- `utils`: Bibliothèque de fonctions utilitaires
+
+## Installation
+
+### Fichiers de configuration
+
+Certaines librairies nécessitent de définir certaines paramètres de configuration pour fonctionner correctement, en particulier le moteur SESAM-Vitale.
+
+Ces paramètres sont définis dans un fichier de configuration `.env` situé dans un des dossiers suivant (par ordre de priorité) :
+- dans le dossier courant (`./.env`)
+- dans le dossier du manifeste (par exemple `crates/sesam-vitale/.env`)
+- dans le dossier de configuration standard de l'OS (par exemple, sur linux, `~/.config/krys4lide/.env` - [plus d'info](https://github.com/dirs-dev/directories-rs?tab=readme-ov-file#projectdirs))
+
+Des exemples de fichiers de configuration sont disponibles à la racine du projet : `.env.linux.example` et `.env.win.example`.
 
 ## Development
 
 ### Pré-requis
 
+#### Tauri CLI
+
 La CLI Tauri est nécessaire au lancement du client `desktop`. Elle peut être installée via Cargo :
 
 ```bash
-cargo install tauri-cli
+cargo install tauri-cli --version "^2.0.0-beta"
 ```
 
-### Exécution de l'application cliente desktop
+#### Tailwindcss CLI
+
+Le CLI Tailwindcss est nécessaire pour la génération du fichier `crates/app/assets/css/style.css`.
+
+La documentation d'installation est disponible sur le site officiel de Tailwindcss : https://tailwindcss.com/blog/standalone-cli
+
+La version actuellement utilisée est la [`v3.4.7`](https://github.com/tailwindlabs/tailwindcss/releases/tag/v3.4.7)
+
+#### SESAM-Vitale
+
+La crate `sesam-vitale` nécessite la présence des librairies dynamiques fournies par le package FSV et la CryptolibCPS. Les instructions d'installation sont disponibles dans le [README](crates/sesam-vitale/README.md) de la crate `sesam-vitale`.
+
+### Lancement
+
+Le logiciel dans sa globalité peut être lancé via la commande suivante :
 
 ```bash
 cargo tauri dev
 ```
 
-### Exécution du serveur web `app` en mode endpoint
+/!\ Attention, le lancement du client `desktop` ne génère pas le fichier `crates/app/assets/css/style.css` automatiquement pour le moment. En cas de modification des interfaces web, il est donc nécessaire de procéder à sa génération comme indiqué dans le [README](crates/app/README.md) de la crate `app`.
 
+Si vous souhaitez lancer les composants séparément, les indications de lancement sont disponibles dans les README des différents crates.
+
+- [app](crates/app/README.md)
+- [sesam-vitale](crates/sesam-vitale/README.md)
+
+## Rechargement automatique
+
+Pour permettre de développer plus rapidement, il existe une librairie qui recompile automatiquement nos modifications en cours : [`cargo-watch`](https://github.com/watchexec/cargo-watch) permet de relancer une commande `cargo` lorsqu'un fichier est modifié (example: `cargo run` --> `cargo watch -x run`).
+
+Voici la commande pour l'installer dans un _package_ :
 ```bash
-cargo run --bin app 
+cargo add cargo-watch --dev --package app
 ```
 
+Le fichier [`.ignore`](./ignore) permet d'ignorer certains fichiers pour éviter de relancer la recompilation inutilement.
+
+⚠️ La librairie n'est pas compatible avec _Windows 7_ et les versions antérieurs de _Windows_.
+
 ## Build
 
 Packager le client desktop

crates/app/.gitignore

@@ -1 +1,4 @@
 /target
+
+# Tailwind CSS CLI
+tailwindcss

crates/app/Cargo.toml

@@ -7,6 +7,15 @@ edition = "2021"
 askama = "0.12.1"
 askama_axum = "0.4.0"
 axum = "0.7.5"
+axum-htmx = { version = "0.6", features = ["auto-vary"] }
+listenfd = "1.0.1"
+notify = "6.1.1"
+serde = { version = "1.0.204", features = ["derive"] }
+thiserror = "1.0.63"
 tokio = { version = "1.39.1", features = ["macros", "rt-multi-thread"] }
 tower-http = { version = "0.5.2", features = ["fs"] }
+tower-livereload = "0.9.3"
 
+[dev-dependencies]
+cargo-watch = "8.5.1"
+systemfd = "0.4.0"

crates/app/README.md

@@ -0,0 +1,35 @@
+## Pré-requis
+
+- Récupérer le binaire TailwindCSS : https://tailwindcss.com/blog/standalone-cli
+
+## Exécution
+
+- Lancer tailwindcss en mode watch dans un terminal : 
+```bash
+./tailwindcss -i css/input.css -o assets/css/style.css --watch
+```
+
+- Lancer le serveur web dans un autre terminal :
+```bash
+cargo run --bin app
+```
+
+## Rechargement automatique (_auto-reload_)
+
+Pour le projet `app`, nous utilisons en plus de `cargo-watch` ses librairies :
+- [`systemfd`](https://github.com/mitsuhiko/systemfd) permet de redémarrer un serveur sans interrompre les connexions en cours, il transmet le descripteur de fichier du socket à une nouvelle instance du serveur (exemple: `cargo watch -x run` --> `systemfd --no-pid -s http::3000 -- cargo watch -x run`). Si le port est déjà pris il en prendra un autre.
+- [`listenfd`](https://github.com/mitsuhiko/listenfd) permet, côté _Rust_, de démarrer un serveur en utilisant des connexions déjà ouvertes.
+
+Pour notre application voici la commande à lancer :
+
+```bash
+systemfd --no-pid -s http::3000 -- cargo watch -x 'run --bin app'
+```
+
+## Chargement à chaud (_livereload_)
+
+Pour que notre navigateur rafraîchisse automatique notre page lorsque le serveur a été recompilé, nous utilisons la librairie [`tower-livereload`](https://github.com/leotaku/tower-livereload).
+
+A chaque changement, que ça soit sur du code en _Rust_, _HTML_, _CSS_ ou _JS_ alors le navigateur va recharger entièrement la page.
+
+En Rust, il n'existe pas encore d'outil de _Hot Reload_ complet et intégré comme on en trouve dans d'autres environnements de développement web, comme pour _Node.js_.

crates/app/askama.toml

@@ -0,0 +1,6 @@
+[general]
+# Directories to search for templates, relative to the crate root.
+dirs = [
+    "src/pages",
+    "src/components",
+]

crates/app/css/input.css

@@ -0,0 +1,3 @@
+@tailwind base;
+@tailwind components;
+@tailwind utilities;

crates/app/src/components/base.html

@@ -0,0 +1,23 @@
+{% if hx_request %}
+  <title>{% block title %}{{ title }}{% endblock %}</title>
+  {% block body %}{% endblock %}
+{% else %}
+<!doctype html>
+<html lang="fr" class="h-full">
+  <head>
+    <title>{% block title %}{{ title }}{% endblock %}</title>
+
+    <script src="/assets/js/htmx@2.0.1.min.js"></script>
+    <script src="/assets/js/alpinejs@3.14.1.min.js" defer></script>
+    <script src="/assets/js/flowbite@2.5.1.min.js"></script>
+    <link href="/assets/css/style.css" rel="stylesheet">
+
+    {% block head %}{% endblock %}
+  </head>
+  <body class="h-full">
+    <div class="min-h-full">
+      {% block body %}{% endblock %}
+    </div>
+  </body>
+</html>
+{% endif %}

crates/app/src/components/navbar/menu-item.html

@@ -0,0 +1,18 @@
+{% set selected = item.id == current %}
+<li>
+    <a
+        href="{{ item.href }}"
+        {% if selected -%}
+            class="block py-2 px-3 text-white bg-blue-700 rounded md:bg-transparent md:text-blue-700 md:p-0 md:dark:text-blue-500"
+            aria-current="page"
+        {% else -%}
+            class="block py-2 px-3 text-gray-900 rounded hover:bg-gray-100 md:hover:bg-transparent md:hover:text-blue-700 md:p-0 dark:text-white md:dark:hover:text-blue-500 dark:hover:bg-gray-700 dark:hover:text-white md:dark:hover:bg-transparent dark:border-gray-700"
+        {% endif -%}
+        hx-get="{{ item.href }}"
+        hx-push-url="true"
+        hx-swap="outerHTML"
+        hx-select-oob="#menu-items,#page-header,#page-main"
+    >
+        {{ item.label }}
+    </a>
+</li>

crates/app/src/components/navbar/navbar.html

@@ -0,0 +1,50 @@
+{% macro navbar(current) %}
+
+{% let items=crate::menu::get_menu_items() %}
+
+<nav class="bg-white border-gray-200 dark:bg-gray-900">
+  <div class="max-w-screen-xl flex flex-wrap items-center justify-between mx-auto p-4">
+  <a href="/" class="flex items-center space-x-3 rtl:space-x-reverse">
+      <img src="https://flowbite.com/docs/images/logo.svg" class="h-8" alt="Flowbite Logo" />
+      <span class="self-center text-2xl font-semibold whitespace-nowrap dark:text-white">Krys4lide</span>
+  </a>
+  <div class="flex items-center md:order-2 space-x-3 md:space-x-0 rtl:space-x-reverse">
+      <button type="button" class="flex text-sm bg-gray-800 rounded-full md:me-0 focus:ring-4 focus:ring-gray-300 dark:focus:ring-gray-600" id="user-menu-button" aria-expanded="false" data-dropdown-toggle="user-dropdown" data-dropdown-placement="bottom">
+        <span class="sr-only">Ouvrir le menu de profil</span>
+        <img class="w-8 h-8 rounded-full" src="https://flowbite.com/docs/images/people/profile-picture-3.jpg" alt="user photo">
+      </button>
+      <!-- Dropdown menu -->
+      <div class="z-50 hidden my-4 text-base list-none bg-white divide-y divide-gray-100 rounded-lg shadow dark:bg-gray-700 dark:divide-gray-600" id="user-dropdown">
+        <div class="px-4 py-3">
+          <span class="block text-sm text-gray-900 dark:text-white">Bonnie Green</span>
+          <span class="block text-sm  text-gray-500 truncate dark:text-gray-400">name@flowbite.com</span>
+        </div>
+        <ul class="py-2" aria-labelledby="user-menu-button">
+          <li>
+            <a href="#" class="block px-4 py-2 text-sm text-gray-700 hover:bg-gray-100 dark:hover:bg-gray-600 dark:text-gray-200 dark:hover:text-white">Profile</a>
+          </li>
+          <li>
+            <a href="#" class="block px-4 py-2 text-sm text-gray-700 hover:bg-gray-100 dark:hover:bg-gray-600 dark:text-gray-200 dark:hover:text-white">Settings</a>
+          </li>
+          <li>
+            <a href="#" class="block px-4 py-2 text-sm text-gray-700 hover:bg-gray-100 dark:hover:bg-gray-600 dark:text-gray-200 dark:hover:text-white">Sign out</a>
+          </li>
+        </ul>
+      </div>
+      <button data-collapse-toggle="navbar-user" type="button" class="inline-flex items-center p-2 w-10 h-10 justify-center text-sm text-gray-500 rounded-lg md:hidden hover:bg-gray-100 focus:outline-none focus:ring-2 focus:ring-gray-200 dark:text-gray-400 dark:hover:bg-gray-700 dark:focus:ring-gray-600" aria-controls="navbar-user" aria-expanded="false">
+        <span class="sr-only">Ouvrir le menu de navigation</span>
+        <svg class="w-5 h-5" aria-hidden="true" xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 17 14">
+            <path stroke="currentColor" stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M1 1h15M1 7h15M1 13h15"/>
+        </svg>
+    </button>
+  </div>
+  <div class="items-center justify-between hidden w-full md:flex md:w-auto md:order-1" id="navbar-user">
+    <ul id="menu-items" class="flex flex-col font-medium p-4 md:p-0 mt-4 border border-gray-100 rounded-lg bg-gray-50 md:space-x-8 rtl:space-x-reverse md:flex-row md:mt-0 md:border-0 md:bg-white dark:bg-gray-800 md:dark:bg-gray-900 dark:border-gray-700">
+      {% for item in items %}
+        {% include "navbar/menu-item.html" %}
+      {% endfor %}
+    </ul>
+  </div>
+  </div>
+</nav>
+{% endmacro %}

crates/app/src/components/skeletons/card.html

@@ -0,0 +1,22 @@
+<div role="status" class="animate-pulse max-w-sm p-4 border border-gray-200 rounded shadow md:p-6 dark:border-gray-700">
+    <div class="flex items-center justify-center h-48 mb-4 bg-gray-300 rounded dark:bg-gray-700">
+        <svg class="w-10 h-10 text-gray-200 dark:text-gray-600" aria-hidden="true" xmlns="http://www.w3.org/2000/svg" fill="currentColor" viewBox="0 0 16 20">
+            <path d="M14.066 0H7v5a2 2 0 0 1-2 2H0v11a1.97 1.97 0 0 0 1.934 2h12.132A1.97 1.97 0 0 0 16 18V2a1.97 1.97 0 0 0-1.934-2ZM10.5 6a1.5 1.5 0 1 1 0 2.999A1.5 1.5 0 0 1 10.5 6Zm2.221 10.515a1 1 0 0 1-.858.485h-8a1 1 0 0 1-.9-1.43L5.6 10.039a.978.978 0 0 1 .936-.57 1 1 0 0 1 .9.632l1.181 2.981.541-1a.945.945 0 0 1 .883-.522 1 1 0 0 1 .879.529l1.832 3.438a1 1 0 0 1-.031.988Z"/>
+            <path d="M5 5V.13a2.96 2.96 0 0 0-1.293.749L.879 3.707A2.98 2.98 0 0 0 .13 5H5Z"/>
+        </svg>
+    </div>
+    <div class="h-2.5 bg-gray-200 rounded-full dark:bg-gray-700 w-48 mb-4"></div>
+    <div class="h-2 bg-gray-200 rounded-full dark:bg-gray-700 mb-2.5"></div>
+    <div class="h-2 bg-gray-200 rounded-full dark:bg-gray-700 mb-2.5"></div>
+    <div class="h-2 bg-gray-200 rounded-full dark:bg-gray-700"></div>
+    <div class="flex items-center mt-4">
+       <svg class="w-10 h-10 me-3 text-gray-200 dark:text-gray-700" aria-hidden="true" xmlns="http://www.w3.org/2000/svg" fill="currentColor" viewBox="0 0 20 20">
+            <path d="M10 0a10 10 0 1 0 10 10A10.011 10.011 0 0 0 10 0Zm0 5a3 3 0 1 1 0 6 3 3 0 0 1 0-6Zm0 13a8.949 8.949 0 0 1-4.951-1.488A3.987 3.987 0 0 1 9 13h2a3.987 3.987 0 0 1 3.951 3.512A8.949 8.949 0 0 1 10 18Z"/>
+        </svg>
+        <div>
+            <div class="h-2.5 bg-gray-200 rounded-full dark:bg-gray-700 w-32 mb-2"></div>
+            <div class="w-48 h-2 bg-gray-200 rounded-full dark:bg-gray-700"></div>
+        </div>
+    </div>
+    <span class="sr-only">Loading...</span>
+</div>

crates/app/src/components/skeletons/menu-items.html

@@ -0,0 +1,4 @@
+<div role="status" class="animate-pulse flex items-center justify-center h-full">
+    <div class="w-32 h-4 bg-gray-200 rounded-full dark:bg-gray-700 me-3"></div>
+    <div class="w-32 h-4 bg-gray-200 rounded-full dark:bg-gray-700"></div>
+</div>

crates/app/src/components/skeletons/page-title.html

@@ -0,0 +1 @@
+<div role="status" class="animate-pulse h-7 bg-gray-200 rounded-full dark:bg-gray-700 w-48 mt-3"></div>

crates/app/src/lib.rs

@@ -1,27 +1,21 @@
-mod templates;
-
 use std::path::Path;
 
-use askama_axum::IntoResponse;
-use templates::{hello::HelloResponse, index::GetIndexResponse};
+use axum::http::{StatusCode, Uri};
+use axum_htmx::AutoVaryLayer;
 use tower_http::services::ServeDir;
 
-async fn root() -> impl IntoResponse {
-    return GetIndexResponse {}.into_response();
-}
+mod menu;
+mod pages;
 
-async fn hello() -> impl IntoResponse {
-    return HelloResponse {
-        name: "Theo".to_string(),
-    }
-    .into_response();
+async fn fallback(uri: Uri) -> (StatusCode, String) {
+    (StatusCode::NOT_FOUND, format!("No route for {uri}"))
 }
 
 pub fn get_router(assets_path: &Path) -> axum::Router {
-    let router = axum::Router::new()
+    axum::Router::new()
         .nest_service("/assets", ServeDir::new(assets_path))
-        .route("/", axum::routing::get(root))
-        .route("/hello", axum::routing::get(hello));
-
-    router
+        .merge(pages::get_routes())
+        .fallback(fallback)
+        // The AutoVaryLayer is used to avoid cache issues with htmx (cf: https://github.com/robertwayne/axum-htmx?tab=readme-ov-file#auto-caching-management)
+        .layer(AutoVaryLayer)
 }

crates/app/src/main.rs

@@ -1,14 +1,84 @@
+use std::path::{Path, PathBuf};
+use std::{env, io};
+
+use axum::body::Body;
+use axum::http::Request;
+use listenfd::ListenFd;
+use notify::Watcher;
+use thiserror::Error;
+use tokio::net::TcpListener;
+use tower_livereload::predicate::Predicate;
+use tower_livereload::LiveReloadLayer;
+
 use ::app::get_router;
-use std::env;
-use std::path::Path;
+
+#[derive(Error, Debug)]
+pub enum AppError {
+    #[error("Unable to bind to TCP listener")]
+    TCPListener(#[from] std::io::Error),
+    #[error("Error with the notify watcher")]
+    NotifyWatcher(#[from] notify::Error),
+    #[error("Missing environment variable {var}")]
+    MissingEnvVar { var: &'static str },
+}
+
+/// Nous filtrons les requêtes de `htmx` pour ne pas inclure le script _JS_ qui gère le rechargement
+/// Voir https://github.com/leotaku/tower-livereload/pull/3
+#[derive(Copy, Clone)]
+struct NotHtmxPredicate;
+impl<T> Predicate<Request<T>> for NotHtmxPredicate {
+    fn check(&mut self, req: &Request<T>) -> bool {
+        !(req.headers().contains_key("hx-request"))
+    }
+}
+
+const DEFAULT_LISTENER: &str = "localhost:3000";
+async fn get_tcp_listener() -> Result<TcpListener, io::Error> {
+    let mut listenfd = ListenFd::from_env();
+
+    match listenfd.take_tcp_listener(0)? {
+        // if we are given a tcp listener on listen fd 0, we use that one
+        Some(listener) => {
+            listener.set_nonblocking(true)?;
+            Ok(TcpListener::from_std(listener)?)
+        }
+        // otherwise fall back to local listening
+        None => Ok(TcpListener::bind(DEFAULT_LISTENER).await?),
+    }
+}
+
+fn get_livereload_layer(
+    templates_paths: Vec<PathBuf>,
+) -> Result<LiveReloadLayer<NotHtmxPredicate>, notify::Error> {
+    let livereload = LiveReloadLayer::new();
+    let reloader = livereload.reloader();
+    let mut watcher = notify::recommended_watcher(move |_| reloader.reload())?;
+    for templates_path in templates_paths {
+        watcher.watch(templates_path.as_path(), notify::RecursiveMode::Recursive)?;
+    }
+    Ok(livereload.request_predicate::<Body, NotHtmxPredicate>(NotHtmxPredicate))
+}
 
 #[tokio::main]
-async fn main() {
-    let manifest_dir = env::var("CARGO_MANIFEST_DIR").unwrap();
+async fn main() -> Result<(), AppError> {
+    let manifest_dir = env::var("CARGO_MANIFEST_DIR").map_err(|_| AppError::MissingEnvVar {
+        var: "CARGO_MANIFEST_DIR",
+    })?;
     let assets_path = Path::new(&manifest_dir).join("assets");
-    let router = get_router(assets_path.as_path());
+    let templates_paths = vec![
+        Path::new(&manifest_dir).join("src/pages"),
+        Path::new(&manifest_dir).join("src/components"),
+    ];
 
-    // TODO: select port based on available port (or ask in CLI)
-    let listener = tokio::net::TcpListener::bind("0.0.0.0:3000").await.unwrap();
-    axum::serve(listener, router).await.unwrap();
+    let livereload_layer =
+        get_livereload_layer(templates_paths).map_err(AppError::NotifyWatcher)?;
+    let router = get_router(assets_path.as_path()).layer(livereload_layer);
+
+    let listener: TcpListener = get_tcp_listener().await.map_err(AppError::TCPListener)?;
+    let local_addr = listener.local_addr().map_err(AppError::TCPListener)?;
+    println!("Listening on: http://{}", local_addr);
+
+    // Run the server with the router
+    axum::serve(listener, router.into_make_service()).await?;
+    Ok(())
 }

crates/app/src/menu.rs

@@ -0,0 +1,23 @@
+pub struct MenuItem {
+    pub id: String,
+    pub label: String,
+    pub href: String,
+}
+
+/// Get the menu items
+/// This function is the central place to define the menu items
+/// It can be used directly in templates, for example in the `navbar` component to render the menu
+pub fn get_menu_items() -> Vec<MenuItem> {
+    vec![
+        MenuItem {
+            id: "home".to_string(),
+            label: "Accueil".to_string(),
+            href: "/".to_string(),
+        },
+        MenuItem {
+            id: "cps".to_string(),
+            label: "CPS".to_string(),
+            href: "/cps".to_string(),
+        },
+    ]
+}

crates/app/src/pages/cps.html

@@ -0,0 +1,43 @@
+{% extends "base.html" %}
+{% import "navbar/navbar.html" as navbar -%}
+
+{% block title %}Pharma Libre - CPS{% endblock %}
+
+{% block body %}
+{% call navbar::navbar(current="cps") %}
+<div class="py-10">
+  <header id="page-header">
+    <div class="mx-auto max-w-7xl px-4 sm:px-6 lg:px-8">
+      <h1
+        id="page-title"
+        class="text-3xl font-bold leading-tight tracking-tight text-gray-900"
+      >
+        CPS
+      </h1>
+    </div>
+  </header>
+  <main id="page-main">
+    <div
+      class="mx-auto max-w-7xl px-4 py-8 sm:px-6 lg:px-8"
+    >
+      <div
+        class="border-2 border-dashed rounded-lg border-gray-300 dark:border-gray-600 h-96 mb-4"
+      >A</div>
+      <div class="grid grid-cols-1 sm:grid-cols-2 lg:grid-cols-4 gap-4 mb-4">
+        <div
+          class="border-2 border-dashed border-gray-300 rounded-lg dark:border-gray-600 h-32 md:h-64"
+        >B</div>
+        <div
+          class="border-2 border-dashed rounded-lg border-gray-300 dark:border-gray-600 h-32 md:h-64"
+        >C</div>
+        <div
+          class="border-2 border-dashed rounded-lg border-gray-300 dark:border-gray-600 h-32 md:h-64"
+        >D</div>
+        <div
+          class="border-2 border-dashed rounded-lg border-gray-300 dark:border-gray-600 h-32 md:h-64"
+        >E</div>
+      </div>
+    </div>
+  </main>
+</div>
+{% endblock %}

crates/app/src/pages/cps.rs

@@ -0,0 +1,12 @@
+use askama_axum::Template;
+use axum_htmx::HxRequest;
+
+#[derive(Template)]
+#[template(path = "cps.html")]
+pub struct CpsTemplate {
+    hx_request: bool,
+}
+
+pub async fn cps(HxRequest(hx_request): HxRequest) -> CpsTemplate {
+    CpsTemplate { hx_request }
+}

crates/app/src/pages/home.html

@@ -0,0 +1,43 @@
+{% extends "base.html" %}
+{% import "navbar/navbar.html" as navbar -%}
+
+{% block title %}Pharma Libre - Accueil{% endblock %}
+
+{% block body %}
+{% call navbar::navbar(current="home") %}
+<div class="py-10">
+  <header id="page-header">
+    <div class="mx-auto max-w-7xl px-4 sm:px-6 lg:px-8">
+      <h1
+        id="page-title"
+        class="text-3xl font-bold leading-tight tracking-tight text-gray-900"
+      >
+        Accueil
+      </h1>
+    </div>
+  </header>
+  <main id="page-main">
+    <div
+      class="mx-auto max-w-7xl px-4 py-8 sm:px-6 lg:px-8"
+    >
+      <div class="grid grid-cols-1 sm:grid-cols-2 lg:grid-cols-4 gap-4 mb-4">
+        <div
+          class="border-2 border-dashed border-gray-300 rounded-lg dark:border-gray-600 h-32 md:h-64"
+        >A</div>
+        <div
+          class="border-2 border-dashed rounded-lg border-gray-300 dark:border-gray-600 h-32 md:h-64"
+        >B</div>
+        <div
+          class="border-2 border-dashed rounded-lg border-gray-300 dark:border-gray-600 h-32 md:h-64"
+        >C</div>
+        <div
+          class="border-2 border-dashed rounded-lg border-gray-300 dark:border-gray-600 h-32 md:h-64"
+        >D</div>
+      </div>
+      <div
+        class="border-2 border-dashed rounded-lg border-gray-300 dark:border-gray-600 h-96 mb-4"
+      >E</div>
+    </div>
+  </main>
+</div>
+{% endblock %}

crates/app/src/pages/home.rs

@@ -0,0 +1,12 @@
+use askama_axum::Template;
+use axum_htmx::HxRequest;
+
+#[derive(Template)]
+#[template(path = "home.html")]
+pub struct GetHomeTemplate {
+    hx_request: bool,
+}
+
+pub async fn home(HxRequest(hx_request): HxRequest) -> GetHomeTemplate {
+    GetHomeTemplate { hx_request }
+}

crates/app/src/pages/mod.rs

@@ -0,0 +1,10 @@
+use axum::{routing, Router};
+
+mod cps;
+mod home;
+
+pub fn get_routes() -> Router {
+    Router::new()
+        .route("/", routing::get(home::home))
+        .route("/cps", routing::get(cps::cps))
+}

crates/app/src/templates/hello.rs

@@ -1,7 +0,0 @@
-use askama::Template;
-
-#[derive(Template)]
-#[template(path = "hello.html")]
-pub struct HelloResponse {
-    pub name: String,
-}

crates/app/src/templates/index.rs

@@ -1,5 +0,0 @@
-use askama::Template;
-
-#[derive(Template)]
-#[template(path = "index.html")]
-pub struct GetIndexResponse;

crates/app/src/templates/mod.rs

@@ -1,2 +0,0 @@
-pub mod hello;
-pub mod index;

crates/app/tailwind.config.js

@@ -0,0 +1,12 @@
+/** @type {import('tailwindcss').Config} */
+module.exports = {
+  content: [
+    './src/**/*.html',
+    './css/**/*.css',
+  ],
+  theme: {
+    extend: {},
+  },
+  plugins: [],
+}
+

crates/app/templates/base.html

@@ -1,13 +0,0 @@
-<!doctype html>
-<html lang="en">
-  <head>
-    <title>{% block title %}{{ title }}{% endblock %}</title>
-
-    <script src="/assets/js/htmx.min.js"></script>
-
-    {% block head %}{% endblock %}
-  </head>
-  <body>
-    {% block body %}{% endblock %}
-  </body>
-</html>

crates/app/templates/hello.html

@@ -1 +0,0 @@
-<div>Hello {{name}}!</div>

crates/app/templates/index.html

@@ -1,23 +0,0 @@
-{% extends "base.html" %}
- 
-{% block title %}Pharma Libre{% endblock %}
- 
-{% block body %}
-
-<div>
-  <header>
-    <h1>Pharma Libre</h1>
-  </header>
-  <main>
-    <div
-      id="hello"
-      hx-get="/hello"
-      hx-target="this"
-      hx-trigger="load"
-      hx-swap="outerHTML"
-    >
-      Loading...
-    </div>
-  </main>
-</div>
-{% endblock %}

crates/desktop/Cargo.toml

@@ -21,4 +21,5 @@ tokio = "1.39.1"
 app = { path = "../app" }
 http = "1.1.0"
 bytes = "1.6.1"
+thiserror = "1.0.63"
 

crates/desktop/src/lib.rs

@@ -1,21 +1,30 @@
+use axum::body::{to_bytes, Body};
+use axum::Router;
 use bytes::Bytes;
 use http::{request, response, Request, Response};
 use std::path::PathBuf;
 use std::sync::Arc;
-
-use axum::body::{to_bytes, Body};
-
-use axum::Router;
-
 use tauri::path::BaseDirectory;
 use tauri::Manager;
+use thiserror::Error;
 use tokio::sync::{Mutex, MutexGuard};
 use tower::{Service, ServiceExt};
 
+#[derive(Error, Debug)]
+pub enum DesktopError {
+    #[error("Axum error:\n{0}")]
+    Axum(#[from] axum::Error),
+    #[error("Infallible error")]
+    Infallible(#[from] std::convert::Infallible),
+}
+
+/// Process requests sent to Tauri (with the `axum://` protocol) and handle them with Axum
+/// When an error occurs, this function is expected to panic, which should result in a 500 error
+/// being sent to the client, so we let the client handle the error recovering
 async fn process_tauri_request(
     tauri_request: Request<Vec<u8>>,
     mut router: MutexGuard<'_, Router>,
-) -> Response<Vec<u8>> {
+) -> Result<Response<Vec<u8>>, DesktopError> {
     let (parts, body): (request::Parts, Vec<u8>) = tauri_request.into_parts();
     let axum_request: Request<Body> = Request::from_parts(parts, body.into());
 
@@ -23,17 +32,16 @@ async fn process_tauri_request(
         .as_service()
         .ready()
         .await
-        .expect("Failed to get ready service from router")
+        .map_err(DesktopError::Infallible)?
         .call(axum_request)
         .await
-        .expect("Could not get response from router");
+        .map_err(DesktopError::Infallible)?;
 
     let (parts, body): (response::Parts, Body) = axum_response.into_parts();
-    let body: Bytes = to_bytes(body, usize::MAX).await.unwrap_or_default();
+    let body: Bytes = to_bytes(body, usize::MAX).await?;
 
     let tauri_response: Response<Vec<u8>> = Response::from_parts(parts, body.into());
-
-    tauri_response
+    Ok(tauri_response)
 }
 
 #[cfg_attr(mobile, tauri::mobile_entry_point)]
@@ -43,7 +51,7 @@ pub fn run() {
             let assets_path: PathBuf = app
                 .path()
                 .resolve("assets", BaseDirectory::Resource)
-                .expect("Path should be resolvable");
+                .expect("Assets path should be resolvable");
 
             // Adds Axum router to application state
             // This makes it so we can retrieve it from any app instance (see bellow)
@@ -60,8 +68,19 @@ pub fn run() {
             // Spawn a new async task to process the request
             tauri::async_runtime::spawn(async move {
                 let router = router.lock().await;
-                let response = process_tauri_request(request, router).await;
-                responder.respond(response);
+                match process_tauri_request(request, router).await {
+                    Ok(response) => responder.respond(response),
+                    Err(err) => {
+                        let body = format!("Failed to process an axum:// request:\n{}", err);
+                        responder.respond(
+                            http::Response::builder()
+                                .status(http::StatusCode::BAD_REQUEST)
+                                .header(http::header::CONTENT_TYPE, "text/plain")
+                                .body::<Vec<u8>>(body.into())
+                                .expect("BAD_REQUEST response should be valid"),
+                        )
+                    }
+                }
             });
         })
         .run(tauri::generate_context!())

crates/services-sesam-vitale-sys/Cargo.toml

@@ -0,0 +1,11 @@
+[package]
+name = "services-sesam-vitale-sys"
+version = "0.1.0"
+edition = "2021"
+#links= "ssvlux64"
+
+[dependencies]
+bitvec = "1.0.1"
+deku = "0.17.0"
+libc = "0.2.155"
+thiserror = "1.0.63"

crates/services-sesam-vitale-sys/src/api.rs

@@ -0,0 +1,66 @@
+use thiserror::Error;
+use std::{ffi::CString, fmt, path::Path, ptr};
+
+use crate::{bindings::{SSV_InitLIB2, SSV_TermLIB}, types::{common::read_from_buffer, configuration::Configuration}};
+
+#[derive(Error, Debug)]
+pub struct SesamVitaleError {
+    code: u16,
+}
+
+impl fmt::Display for SesamVitaleError {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        write!(f, "Got error code {} from SSV_LireConfig", self.code)
+    }
+}
+
+pub fn init_library(sesam_ini_path: &Path) -> Result<(), SesamVitaleError> {
+    // TODO: better error handling
+    let path_str = sesam_ini_path.to_str().unwrap();
+    let path_ptr = CString::new(path_str).expect("failed to create cstring");
+
+    let exit_code: u16 = unsafe { SSV_InitLIB2(path_ptr.as_ptr()) };
+    if exit_code != 0 {
+        let error = SesamVitaleError { code: exit_code };
+        return Err(error);
+    };
+
+    Ok(())
+}
+pub fn close_library() -> Result<(), SesamVitaleError> {
+    let exit_code: u16 = unsafe { SSV_TermLIB() };
+    if exit_code != 0 {
+        let error = SesamVitaleError { code: exit_code };
+        return Err(error);
+    };
+
+    Ok(())
+}
+
+pub fn read_config() -> Result<Configuration, SesamVitaleError> {
+    let mut buffer_ptr: *mut libc::c_void = ptr::null_mut();
+    let mut size: libc::size_t = 0;
+
+    let buffer_ptr_ptr: *mut *mut libc::c_void = &mut buffer_ptr;
+    let size_ptr: *mut libc::size_t = &mut size;
+
+    // Need to add proper error handling -> return a result with error code pointing to an error
+    // enum
+    let exit_code: u16 = unsafe { SSV_LireConfig(buffer_ptr_ptr, size_ptr) };
+
+    if exit_code != 0 {
+        let error = SesamVitaleError { code: exit_code };
+        return Err(error);
+    };
+
+    let buffer: &[u8] = unsafe { std::slice::from_raw_parts(buffer_ptr as *const u8, size) };
+
+    // TODO: Improve error handling
+    let configuration: Configuration = read_from_buffer(buffer).unwrap();
+
+    // TODO: Call library function for memory delocating
+    unsafe { libc::free(buffer_ptr) };
+
+    Ok(configuration)
+}
+

crates/services-sesam-vitale-sys/src/bindings.rs

@@ -0,0 +1,288 @@
+#![allow(non_upper_case_globals)]
+#![allow(non_camel_case_types)]
+#![allow(non_snake_case)]
+#![allow(dead_code)]
+
+// Generated using bindgen
+
+extern "C" {
+    // Fonctions de gestion des données
+
+    pub fn SSV_LireCartePS(
+        NomRessourcePS: *const ::std::os::raw::c_char,
+        NomRessourceLecteur: *const ::std::os::raw::c_char,
+        CodePorteurPS: *const ::std::os::raw::c_char,
+        pZDataOut: *mut *mut ::std::os::raw::c_void,
+        pTailleZone: *mut usize,
+    ) -> ::std::os::raw::c_ushort;
+
+    pub fn SSV_LireDroitsVitale(
+        NomRessourcePS: *const ::std::os::raw::c_char,
+        NomRessourceLecteur: *const ::std::os::raw::c_char,
+        CodePorteurPS: *const ::std::os::raw::c_char,
+        DateConsultation: *const ::std::os::raw::c_char,
+        pZDataOut: *mut *mut ::std::os::raw::c_void,
+        pTailleZone: *mut usize,
+    ) -> ::std::os::raw::c_ushort;
+
+    pub fn SSV_FormaterFactures(
+        cFactureACreer: ::std::os::raw::c_char,
+        cModeSecur: ::std::os::raw::c_char,
+        cTypeFlux: ::std::os::raw::c_char,
+        pZDataIn: *mut ::std::os::raw::c_void,
+        TailleDataIn: usize,
+        pZDataOut: *mut *mut ::std::os::raw::c_void,
+        pTailleZone: *mut usize,
+    ) -> ::std::os::raw::c_ushort;
+
+    pub fn SSV_ChiffrerFacture(
+        pZDataIn: *mut ::std::os::raw::c_void,
+        TailleDataIn: usize,
+        pZDataOut: *mut *mut ::std::os::raw::c_void,
+        pTailleZone: *mut usize,
+    ) -> ::std::os::raw::c_ushort;
+
+    pub fn SSV_SignerFactureVitale(
+        pcNomRessourceVitale: *const ::std::os::raw::c_char,
+        pZDataIn: *mut ::std::os::raw::c_void,
+        szTailleDataIn: usize,
+        pZDataOut: *mut *mut ::std::os::raw::c_void,
+        pszTailleZone: *mut usize,
+    ) -> ::std::os::raw::c_ushort;
+
+    pub fn SSV_CalculerHashFactureAssure(
+        pcNumSerie: *const ::std::os::raw::c_char,
+        pZDataIn: *mut ::std::os::raw::c_void,
+        szTailleDataIn: usize,
+        pZDataOut: *mut *mut ::std::os::raw::c_void,
+        pszTailleZone: *mut usize,
+    ) -> ::std::os::raw::c_ushort;
+
+    pub fn SSV_AjouterSignatureAssureDansFacture(
+        pZDataIn: *mut ::std::os::raw::c_void,
+        szTailleDataIn: usize,
+        pZDataOut: *mut *mut ::std::os::raw::c_void,
+        pszTailleZone: *mut usize,
+    ) -> ::std::os::raw::c_ushort;
+
+    pub fn SSV_SignerFactureCPS(
+        pcNomRessourcePS: *const ::std::os::raw::c_char,
+        pcNomRessourceLecteur: *const ::std::os::raw::c_char,
+        pcCodePorteurPS: *const ::std::os::raw::c_char,
+        cNologSituation: ::std::os::raw::c_char,
+        pZDataIn: *mut ::std::os::raw::c_void,
+        szTailleDataIn: usize,
+        pZDataOut: *mut *mut ::std::os::raw::c_void,
+        pszTailleZone: *mut usize,
+    ) -> ::std::os::raw::c_ushort;
+
+    pub fn SSV_FormaterLot(
+        NBZDataIn: ::std::os::raw::c_short,
+        TZDataIn: *mut *mut ::std::os::raw::c_void,
+        TTailleZoneIn: *mut usize,
+        pNbZDataOut: *mut ::std::os::raw::c_short,
+        TZDataOut: *mut *mut ::std::os::raw::c_void,
+        TTailleZoneOut: *mut usize,
+    ) -> ::std::os::raw::c_ushort;
+
+    pub fn SSV_SignerLotCPS(
+        pcNomRessourcePS: *const ::std::os::raw::c_char,
+        pcNomRessourceLecteur: *const ::std::os::raw::c_char,
+        pcCodePorteurPS: *const ::std::os::raw::c_char,
+        cNologSituation: ::std::os::raw::c_char,
+        pZDataIn: *mut ::std::os::raw::c_void,
+        szTailleDataIn: usize,
+        pZDataOut: *mut *mut ::std::os::raw::c_void,
+        pszTailleZone: *mut usize,
+    ) -> ::std::os::raw::c_ushort;
+
+    pub fn SSV_FormaterFichier(
+        pZDataIn: *mut ::std::os::raw::c_void,
+        TailleDataIn: usize,
+        pZDataOut: *mut *mut ::std::os::raw::c_void,
+        pTailleZone: *mut usize,
+    ) -> ::std::os::raw::c_ushort;
+
+    pub fn SSV_TraduireARL(
+        NbZDonneesEntree: ::std::os::raw::c_short,
+        TZDataIn: *mut *mut ::std::os::raw::c_void,
+        TTailleZoneIn: *mut usize,
+        pZDataOut: *mut *mut ::std::os::raw::c_void,
+        pTailleZoneOut: *mut usize,
+    ) -> ::std::os::raw::c_ushort;
+
+    pub fn SSV_LireNumSerieCarteVitale(
+        pcNomRessource: *mut ::std::os::raw::c_char,
+        numeroSerie: *mut ::std::os::raw::c_uchar,
+    ) -> ::std::os::raw::c_ushort;
+
+    pub fn SSV_CalculerHashFacturePS(
+        pcNumSerieCPS: *const ::std::os::raw::c_char,
+        pZDataIn: *mut ::std::os::raw::c_void,
+        usTailleDataIn: usize,
+        pZDataOut: *mut *mut ::std::os::raw::c_void,
+        pusTailleZone: *mut usize,
+    ) -> ::std::os::raw::c_ushort;
+    pub fn SSV_AjouterSignaturePSFacture(
+        pZDataIn: *mut ::std::os::raw::c_void,
+        szTailleDataIn: usize,
+        pZDataOut: *mut *mut ::std::os::raw::c_void,
+        pszTailleZone: *mut usize,
+    ) -> ::std::os::raw::c_ushort;
+    pub fn SSV_DechargerFacturesPdT(
+        NomRessourcePS: *const ::std::os::raw::c_char,
+        NomRessourceLecteur: *const ::std::os::raw::c_char,
+        CodePorteurPS: *const ::std::os::raw::c_char,
+        pcNumFact: *const ::std::os::raw::c_char,
+        sNbZDataIn: ::std::os::raw::c_short,
+        pvTZDataIn: *mut *mut ::std::os::raw::c_void,
+        psTTailleDataIn: *mut usize,
+        pNbZDataOut: *mut ::std::os::raw::c_short,
+        TZDataOut: *mut *mut ::std::os::raw::c_void,
+        TTailleZoneOut: *mut usize,
+    ) -> ::std::os::raw::c_ushort;
+    pub fn SSV_TraduireFSE(
+        pZDataIn: *mut ::std::os::raw::c_void,
+        TailleDataIn: usize,
+        pZDataOut: *mut *mut ::std::os::raw::c_void,
+        pTailleZone: *mut usize,
+    ) -> ::std::os::raw::c_ushort;
+
+    // Fonctions TLA
+    // TLA (Terminal Lecteur Applicatif) -> lecteur autre que PC-SC, on ne prend pas en compte cela
+
+    pub fn SSV_IdentifierTLA(
+        pcNomRessourceLecteur: *const ::std::os::raw::c_char,
+        NumVersionCDC: *const ::std::os::raw::c_char,
+        pZDataOut: *mut *mut ::std::os::raw::c_void,
+        tailleDataOut: *mut usize,
+    ) -> ::std::os::raw::c_ushort;
+    pub fn SSV_ChargerDonneesTLA(
+        pcNomRessourceLecteur: *const ::std::os::raw::c_char,
+        sNbZDataIn: ::std::os::raw::c_short,
+        pvTZDataIn: *mut *mut ::std::os::raw::c_void,
+        psTTailleDataIn: *mut usize,
+    ) -> ::std::os::raw::c_ushort;
+    pub fn SSV_ChargerFacturesPdT(
+        pcNomRessourceLecteur: *const ::std::os::raw::c_char,
+        pcNumFacturation: *const ::std::os::raw::c_char,
+        sNbZDataIn: ::std::os::raw::c_short,
+        pvTZDataIn: *mut *mut ::std::os::raw::c_void,
+        psTTailleDataIn: *mut usize,
+        pNbZDataOut: *mut ::std::os::raw::c_short,
+        TZDataOut: *mut *mut ::std::os::raw::c_void,
+        TTailleZoneOut: *mut usize,
+    ) -> ::std::os::raw::c_ushort;
+    pub fn SSV_DechargerFSETLA(
+        NomRessourcePS: *const ::std::os::raw::c_char,
+        NomRessourceLecteur: *const ::std::os::raw::c_char,
+        CodePorteurPS: *const ::std::os::raw::c_char,
+        pcNumFact: *const ::std::os::raw::c_char,
+        pNbZDataOut: *mut ::std::os::raw::c_short,
+        TZDataOut: *mut *mut ::std::os::raw::c_void,
+        TTailleZoneOut: *mut usize,
+    ) -> ::std::os::raw::c_ushort;
+    pub fn SSV_DechargerFSETLANC(
+        NomRessourcePS: *const ::std::os::raw::c_char,
+        NomRessourceLecteur: *const ::std::os::raw::c_char,
+        CodePorteurPS: *const ::std::os::raw::c_char,
+        pcNumFact: *const ::std::os::raw::c_char,
+        pNbZDataOut: *mut ::std::os::raw::c_short,
+        TZDataOut: *mut *mut ::std::os::raw::c_void,
+        TTailleZoneOut: *mut usize,
+    ) -> ::std::os::raw::c_ushort;
+    pub fn SSV_DechargerBeneficiaires(
+        NomRessourcePS: *const ::std::os::raw::c_char,
+        NomRessourceLecteur: *const ::std::os::raw::c_char,
+        CodePorteurPS: *const ::std::os::raw::c_char,
+        cNumFacturation: *const ::std::os::raw::c_char,
+        sNbZDataOut: *mut ::std::os::raw::c_short,
+        pTZDataOut: *mut *mut ::std::os::raw::c_void,
+        sTTailleDataOut: *mut usize,
+    ) -> ::std::os::raw::c_ushort;
+    pub fn SSV_EffacerTLA(
+        NomRessourcePS: *const ::std::os::raw::c_char,
+        NomRessourceLecteur: *const ::std::os::raw::c_char,
+        CodePorteurPS: *const ::std::os::raw::c_char,
+        cNumFacturation: *const ::std::os::raw::c_char,
+        cTypeDonnee: *const ::std::os::raw::c_char,
+    ) -> ::std::os::raw::c_ushort;
+    pub fn SSV_SecuriserFacture(
+        pcNomRessourcePS: *const ::std::os::raw::c_char,
+        pcNomRessourceLecteur: *const ::std::os::raw::c_char,
+        pcCodePorteurPS: *const ::std::os::raw::c_char,
+        cNologSituation: ::std::os::raw::c_char,
+        pcNumFact: *const ::std::os::raw::c_char,
+        pvDataIn: *mut ::std::os::raw::c_void,
+        szTailleDataIn: usize,
+        pvDataOut: *mut *mut ::std::os::raw::c_void,
+        pszTailleDataOut: *mut usize,
+    ) -> ::std::os::raw::c_ushort;
+
+    // Fonctions de gestion de configuration (GALSS)
+
+    pub fn SSV_LireConfig(
+        pZDataOut: *mut *mut ::std::os::raw::c_void,
+        psTailleDataOut: *mut usize,
+    ) -> ::std::os::raw::c_ushort;
+
+    pub fn SSV_LireDateLecteur(
+        pcNomRessourceLecteur: *const ::std::os::raw::c_char,
+        pcDateHeure: *mut ::std::os::raw::c_char,
+    ) -> ::std::os::raw::c_ushort;
+
+    pub fn SSV_MajDateLecteur(
+        pcNomRessourceLecteur: *const ::std::os::raw::c_char,
+        pcDateHeure: *const ::std::os::raw::c_char,
+    ) -> ::std::os::raw::c_ushort;
+
+    pub fn SSV_ChargerAppli(
+        pcNomRessourceLecteur: *const ::std::os::raw::c_char,
+        sNbZDataIn: ::std::os::raw::c_short,
+        pvTZDataIn: *mut *mut ::std::os::raw::c_void,
+        psTTailleDataIn: *mut usize,
+    ) -> ::std::os::raw::c_ushort;
+
+    // Fonctions techniques
+
+    // La fonction Initialiser Librairie a pour objet de charger et d’initialiser dans la mémoire du système :
+    // - dans le cas où le GALSS est installé sur le poste :
+    //      - la bibliothèque du Gestionnaire d’Accès au Lecteur Santé Social (GALSS),
+    //      - qui charge la bibliothèque du Protocole Santé Social (PSS),
+    //      - la configuration du poste de travail à l’aide du fichier galssinf,
+    //  - les variables globales communes aux différents Services SESAM-Vitale,
+    //  - les fichiers de tables et scripts des répertoires par défaut.
+    // Cette fonction accède au référentiel électronique en utilisant le chemin complet indiqué dans le fichier sesam.ini.
+    pub fn SSV_InitLIB2(pcFichierSesam: *const ::std::os::raw::c_char) -> ::std::os::raw::c_ushort;
+
+    // La fonction Terminer a pour objet de décharger de la mémoire du système les éléments
+    // chargés par la fonction Initialiser Librairie, qui ne sont plus utiles.
+    pub fn SSV_TermLIB() -> ::std::os::raw::c_ushort;
+
+    /// Fonctions de Tracage
+    //La fonction Allouer Zone Mémoire a un rôle purement technique : elle permet d’allouer, autrement dit de réserver une zone ou partie de la mémoire du poste de travail pour y écrire les données à passer en entrée d’un Service SESAM-Vitale.
+    // Cette fonction doit être utilisée pour allouer toutes les zones de mémoire requises en entrée des Services SESAM-Vitale de manière à permettre un diagnostic fiable par le « mode trace » en cas de dysfonctionnement. En effet, son mode d’exécution est susceptible de fournir des informations utiles au « mode trace » lorsqu’il est activé.
+    pub fn SSV_AllouerZoneMem(
+        pZDataIn: *mut *mut ::std::os::raw::c_void,
+        taille: usize,
+    ) -> ::std::os::raw::c_ushort;
+
+    // La fonction Libérer Zone Mémoire a un rôle purement technique : elle permet de libérer une zone de mémoire du poste de travail précédemment allouée après exploitation des données qu’elle contient.
+    // Cette fonction doit être utilisée pour libérer toutes les zones de mémoire :
+    // - celles qui ont été allouées par le progiciel de santé pour fournir les données nécessaires à l’entrée des Services SESAM-Vitale, avant leur appel, celles qui ont été allouées par les Services SESAM-Vitale pour fournir en sortie les données utiles au progiciel de santé qui a fait appel à ces services,
+    // - de façon à permettre un diagnostic fiable par le mode trace en cas de dysfonctionnement
+    //En effet, son exécution est susceptible de fournir des informations utiles au « mode trace » lorsqu’il est activé.
+    pub fn SSV_LibererZoneMem(pZone: *mut ::std::os::raw::c_void);
+
+    // La fonction Initialiser Trace a pour objet de permettre l’activation du « mode trace ».
+    // Ce mode de fonctionnement est prévu pour permettre à l’assistance technique du GIE
+    // SESAM-Vitale d’analyser les problèmes de mise en œuvre des Services SESAM-Vitale,
+    // notamment lorsque une fonction retourne un code d’erreur de valeur hexadécimale supérieure à FF00.
+    pub fn SSV_InitTrace(
+        pathConf: *mut ::std::os::raw::c_char,
+        ModeOuvertureFicherLog: *mut ::std::os::raw::c_char,
+        ModuleLog: ::std::os::raw::c_ushort,
+        NiveauLog: ::std::os::raw::c_uchar,
+    ) -> ::std::os::raw::c_ushort;
+
+}

crates/services-sesam-vitale-sys/src/lib.rs

@@ -0,0 +1,6 @@
+pub mod api;
+mod bindings;
+pub mod types;
+
+#[cfg(test)]
+mod tests {}

crates/services-sesam-vitale-sys/src/types/common.rs

@@ -0,0 +1,144 @@
+use crate::types::configuration::{
+    ConfigurationHeader, PCSCReader, ReaderConfiguration, SESAMVitaleComponent,
+};
+
+use std::{error::Error, str::FromStr};
+
+use bitvec::index::BitIdx;
+use deku::{
+    bitvec::{BitStore, Msb0},
+    ctx::ByteSize,
+    deku_derive,
+    reader::{Reader, ReaderRet},
+    DekuContainerRead, DekuError, DekuReader,
+};
+
+#[deku_derive(DekuRead)]
+#[derive(Debug, Clone, PartialEq)]
+pub(crate) struct NumericString(#[deku(map = "convert_from_data_field")] String);
+
+#[deku_derive(DekuRead)]
+#[derive(Debug, Clone, PartialEq)]
+pub(crate) struct AlphaNumericString(#[deku(map = "convert_from_data_field")] String);
+
+#[deku_derive(DekuRead)]
+#[derive(Debug, Clone, PartialEq)]
+pub(crate) struct BinaryData(#[deku(map = "extract_from_data_field")] Vec<u8>);
+
+#[deku_derive(DekuRead)]
+#[derive(Debug, Clone, Copy, PartialEq)]
+#[deku(endian = "big")]
+pub(crate) struct GroupId(u16);
+
+trait MapToDekuParseError<T> {
+    fn map_to_deku_parse_error(self) -> Result<T, DekuError>;
+}
+
+impl<T, E: Error> MapToDekuParseError<T> for Result<T, E> {
+    fn map_to_deku_parse_error(self) -> Result<T, DekuError> {
+        self.map_err(|e| DekuError::Parse(e.to_string().into()))
+    }
+}
+
+fn read_size<R: std::io::Read>(reader: &mut Reader<R>) -> Result<ByteSize, DekuError> {
+    let first_byte: u8 = u8::from_reader_with_ctx(reader, ())?;
+
+    let is_length_expanded = first_byte.get_bit::<Msb0>(BitIdx::new(0).map_to_deku_parse_error()?);
+
+    match is_length_expanded {
+        true => {
+            let size_of_data_size: ByteSize = ByteSize((first_byte & 0b0111_1111) as usize);
+
+            if size_of_data_size.0 > 4 {
+                return Err(DekuError::Parse("Size of the length encoding is > 4, this is not normal. Probable parsing error".to_string().into()));
+            };
+
+            // maximum size of the buffer is 4, we use the offset to read values less than 4 bytes
+            let buffer: &mut [u8; 4] = &mut [0; 4];
+            let write_offset = 4 - size_of_data_size.0;
+
+            match reader.read_bytes(size_of_data_size.0, &mut buffer[write_offset..])? {
+                ReaderRet::Bits(_bit_vec) => Err(DekuError::Parse("Got bits when trying to read bytes -> reader is unaligned, this is not normal.".to_string().into())),
+                ReaderRet::Bytes => Ok(ByteSize(u32::from_be_bytes(*buffer) as usize)),
+            }
+        }
+        false => Ok(ByteSize(first_byte as usize)),
+    }
+}
+
+// Using this as the map function asks deku to parse a datafield
+// We then use the datafield and convert it to the corresponding value
+pub(super) fn convert_from_data_field<T>(data_field: DataField) -> Result<T, DekuError>
+where
+    T: FromStr,
+    T::Err: Error,
+{
+    let text = String::from_utf8(data_field.data).map_to_deku_parse_error()?;
+    T::from_str(&text).map_to_deku_parse_error()
+}
+
+pub(crate) fn extract_from_data_field(data_field: DataField) -> Result<Vec<u8>, DekuError> {
+    Ok(data_field.data)
+}
+
+#[deku_derive(DekuRead)]
+#[derive(Debug, PartialEq)]
+pub(crate) struct DataField {
+    #[deku(reader = "read_size(deku::reader)")]
+    pub(crate) data_size: ByteSize,
+
+    #[deku(bytes_read = "data_size.0")]
+    pub(crate) data: Vec<u8>,
+}
+
+#[deku_derive(DekuRead)]
+#[derive(Debug, PartialEq)]
+pub(crate) struct BlockHeader {
+    pub(crate) group_id: GroupId,
+
+    #[deku(reader = "read_size(deku::reader)")]
+    pub(crate) data_size: ByteSize,
+}
+
+#[deku_derive(DekuRead)]
+#[derive(Debug, PartialEq)]
+pub(crate) struct DataBlock {
+    pub(crate) header: BlockHeader,
+
+    #[deku(ctx = "header.group_id")]
+    pub(crate) inner: DataGroup,
+}
+
+#[deku_derive(DekuRead)]
+#[derive(Debug, PartialEq)]
+#[deku(ctx = "group_id: GroupId", id = "group_id.0")]
+pub enum DataGroup {
+    #[deku(id = 60)]
+    ConfigurationHeader(ConfigurationHeader),
+    #[deku(id = 61)]
+    ReaderConfiguration(ReaderConfiguration),
+    #[deku(id = 64)]
+    SESAMVitaleComponent(SESAMVitaleComponent),
+    #[deku(id = 67)]
+    PCSCReader(PCSCReader),
+}
+pub(crate) fn read_from_buffer<T>(buffer: &[u8]) -> Result<T, T::Error>
+where
+    T: TryFrom<Vec<DataBlock>>,
+{
+    let mut data_blocks: Vec<DataBlock> = Vec::new();
+    let mut offset = 0;
+
+    let mut remaining_buffer = buffer;
+
+    while !remaining_buffer.is_empty() {
+        // TODO: properly handle errors
+        let (rest, data_block) = DataBlock::from_bytes((remaining_buffer, offset)).unwrap();
+
+        data_blocks.push(data_block);
+
+        (remaining_buffer, offset) = rest;
+    }
+
+    T::try_from(data_blocks)
+}

crates/services-sesam-vitale-sys/src/types/configuration.rs

@@ -0,0 +1,137 @@
+use crate::types::common::DataBlock;
+use std::{error::Error, fmt, vec::Vec};
+
+use crate::types::common::convert_from_data_field;
+use deku::{deku_derive, DekuReader};
+
+use super::common::{AlphaNumericString, DataGroup};
+
+#[deku_derive(DekuRead)]
+#[derive(Debug, PartialEq)]
+pub struct SSVVersionNumber(#[deku(map = "convert_from_data_field")] u16);
+
+#[deku_derive(DekuRead)]
+#[derive(Debug, PartialEq)]
+pub struct GALSSVersionNumber(#[deku(map = "convert_from_data_field")] u16);
+
+#[deku_derive(DekuRead)]
+#[derive(Debug, PartialEq)]
+pub struct PSSVersionNumber(#[deku(map = "convert_from_data_field")] u16);
+
+#[deku_derive(DekuRead)]
+#[derive(Debug, PartialEq)]
+pub struct ConfigurationHeader {
+    pub ssv_version: SSVVersionNumber,
+    pub galss_version: GALSSVersionNumber,
+    pub pss_version: PSSVersionNumber,
+}
+
+#[deku_derive(DekuRead)]
+#[derive(Debug, PartialEq)]
+pub struct PCSCReaderName(AlphaNumericString);
+
+#[deku_derive(DekuRead)]
+#[derive(Debug, PartialEq)]
+pub struct CardType(#[deku(map = "convert_from_data_field")] u8);
+
+#[deku_derive(DekuRead)]
+#[derive(Debug, PartialEq)]
+pub struct PCSCReader {
+    pub name: PCSCReaderName,
+    pub card_type: CardType,
+}
+
+#[deku_derive(DekuRead)]
+#[derive(Debug, PartialEq)]
+pub struct SESAMVitaleComponentID(#[deku(map = "convert_from_data_field")] u16);
+
+#[deku_derive(DekuRead)]
+#[derive(Debug, PartialEq)]
+pub struct SESAMVitaleComponentDescription(AlphaNumericString);
+
+#[deku_derive(DekuRead)]
+#[derive(Debug, PartialEq)]
+pub struct SESAMVitaleComponentVersion(AlphaNumericString);
+
+#[deku_derive(DekuRead)]
+#[derive(Debug, PartialEq)]
+pub struct SESAMVitaleComponent {
+    pub id: SESAMVitaleComponentID,
+    pub description: SESAMVitaleComponentDescription,
+    pub version: SESAMVitaleComponentVersion,
+}
+
+#[deku_derive(DekuRead)]
+#[derive(Debug, PartialEq)]
+pub struct ReaderConfiguration {}
+
+#[derive(Debug)]
+pub enum ConfigurationError {
+    MultipleConfigurationHeaders,
+    MissingConfigurationHeader,
+}
+
+impl fmt::Display for ConfigurationError {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        match self {
+            ConfigurationError::MultipleConfigurationHeaders => {
+                write!(f, "Multiple ConfigurationHeader blocks found")
+            }
+            ConfigurationError::MissingConfigurationHeader => {
+                write!(f, "Missing ConfigurationHeader block")
+            }
+        }
+    }
+}
+
+impl Error for ConfigurationError {}
+
+#[derive(Debug)]
+pub struct Configuration {
+    pub configuration_header: ConfigurationHeader,
+    pub reader_configurations: Vec<ReaderConfiguration>,
+    pub sesam_vitale_components: Vec<SESAMVitaleComponent>,
+    pub pcsc_readers: Vec<PCSCReader>,
+}
+
+impl TryFrom<Vec<DataBlock>> for Configuration {
+    type Error = ConfigurationError;
+
+    fn try_from(data_blocks: Vec<DataBlock>) -> Result<Self, Self::Error> {
+        let mut configuration_header: Option<ConfigurationHeader> = None;
+        let mut reader_configurations: Vec<ReaderConfiguration> = Vec::new();
+        let mut sesam_vitale_components: Vec<SESAMVitaleComponent> = Vec::new();
+        let mut pcsc_readers: Vec<PCSCReader> = Vec::new();
+
+        for block in data_blocks {
+            match block.inner {
+                DataGroup::ConfigurationHeader(header) => {
+                    if configuration_header.is_some() {
+                        return Err(ConfigurationError::MultipleConfigurationHeaders);
+                    }
+                    configuration_header = Some(header);
+                }
+                DataGroup::ReaderConfiguration(configuration) => {
+                    reader_configurations.push(configuration)
+                }
+                DataGroup::SESAMVitaleComponent(component) => {
+                    sesam_vitale_components.push(component);
+                }
+                DataGroup::PCSCReader(reader) => {
+                    pcsc_readers.push(reader);
+                }
+            }
+        }
+        let configuration_header = match configuration_header {
+            Some(header) => header,
+            None => return Err(ConfigurationError::MissingConfigurationHeader),
+        };
+
+        Ok(Self {
+            configuration_header,
+            reader_configurations,
+            sesam_vitale_components,
+            pcsc_readers,
+        })
+    }
+}

crates/services-sesam-vitale-sys/src/types/mod.rs

@@ -0,0 +1,3 @@
+pub mod common;
+pub mod configuration;
+pub mod droits_vitale;

crates/sesam-vitale/Cargo.toml

@@ -4,8 +4,10 @@ version = "0.1.0"
 edition = "2021"
 
 [dependencies]
-dotenv = "0.15"
+anyhow = "1.0"
 libc = "0.2"
+thiserror = "1.0"
+utils = { path = "../utils" }
 
 [build-dependencies]
 dotenv = "0.15"

crates/sesam-vitale/build.rs

@@ -1,13 +1,13 @@
-extern crate dotenv;
-
 use std::env;
 use std::path::PathBuf;
 
+use dotenv::from_path;
+
 fn main() {
     // Load the .env.build file for build-time environment variables
-    let manifest_dir = env::var("CARGO_MANIFEST_DIR").unwrap();
+    let manifest_dir = env::var("CARGO_MANIFEST_DIR").expect("CARGO_MANIFEST_DIR must be set");
     let manifest_path = PathBuf::from(manifest_dir);
-    dotenv::from_path(manifest_path.join(".env.build")).ok();
+    from_path(manifest_path.join(".env.build")).ok();
 
     println!("cargo::rerun-if-env-changed=SESAM_FSV_LIB_PATH");
     println!("cargo::rerun-if-env-changed=SESAM_FSV_SSVLIB");
@@ -16,21 +16,28 @@ fn main() {
 
     // Add local lib directory to the linker search path (for def files and static libs)
     let static_lib_path = manifest_path.join("lib");
-    println!("cargo::rustc-link-search=native={}", static_lib_path.display());
+    println!(
+        "cargo::rustc-link-search=native={}",
+        static_lib_path.display()
+    );
 
     // Add the SESAM_FSV_LIB_PATH to the linker search path
-    let fsv_lib_path = PathBuf::from(env::var("SESAM_FSV_LIB_PATH").unwrap());
+    let fsv_lib_path =
+        PathBuf::from(env::var("SESAM_FSV_LIB_PATH").expect("SESAM_FSV_LIB_PATH must be set"));
     println!("cargo::rustc-link-search=native={}", fsv_lib_path.display());
 
     // Add the SESAM_FSV_LIB_PATH to the PATH environment variable
     if cfg!(target_os = "windows") {
-        let path = env::var("PATH").unwrap_or(String::new());
+        let path = env::var("PATH").unwrap_or_default();
         println!("cargo:rustc-env=PATH={};{}", fsv_lib_path.display(), path);
     } else if cfg!(target_os = "linux") {
         println!("cargo:rustc-env=LD_LIBRARY_PATH={}", fsv_lib_path.display());
     }
 
     // Link the SESAM_FSV_SSVLIB dynamic library
-    println!("cargo::rustc-link-lib=dylib={}", env::var("SESAM_FSV_SSVLIB").unwrap());
+    println!(
+        "cargo::rustc-link-lib=dylib={}",
+        env::var("SESAM_FSV_SSVLIB").expect("SESAM_FSV_SSVLIB must be set")
+    );
     // TODO : try `raw-dylib` instead of `dylib` on Windows to avoid the need of the `lib` headers compiled from the `def`
 }

crates/sesam-vitale/src/cps.rs

@@ -0,0 +1,400 @@
+use libc::{c_void, size_t};
+use std::ffi::CString;
+use std::ptr;
+use thiserror::Error;
+
+use crate::libssv::{self, SSV_LireCartePS};
+use crate::ssv_memory::{decode_ssv_memory, Block, SSVMemoryError};
+
+#[derive(Error, Debug)]
+pub enum CartePSError {
+    #[error("Unknown (group, field) pair: ({group}, {field})")]
+    UnknownGroupFieldPair { group: u16, field: u16 },
+    #[error("CString creation error: {0}")]
+    CString(#[from] std::ffi::NulError),
+    #[error("Unable to get the last situation while parsing a CartePS")]
+    InvalidLastSituation,
+    #[error(transparent)]
+    SSVMemory(#[from] SSVMemoryError),
+    #[error(transparent)]
+    SSVLibErrorCode(#[from] libssv::LibSSVError),
+}
+
+#[derive(Debug, Default)]
+pub struct CartePS {
+    titulaire: TitulairePS,
+    situations: Vec<SituationPS>,
+}
+
+// 1. CB = Caractères Binaires »
+// 2. CE = Caractères « Etendus » (ISO 8859-1)
+// 3. CA = Caractères Alphanumériques (ASCII?)
+// 4. CN = Caractères Numériques
+#[derive(Debug, Default)]
+struct TitulairePS {
+    type_de_carte_ps: String,                         // CN
+    type_d_identification_nationale: String,          // CN
+    numero_d_identification_nationale: String,        // CE - 8 -> 30
+    cle_du_numero_d_identification_nationale: String, // CN
+    code_civilite: String,                            // CN
+    nom_du_ps: String,                                // CE - 27
+    prenom_du_ps: String,                             // CE - 27
+    categorie_carte: char,                            // CA
+}
+
+#[derive(Debug, Default)]
+struct SituationPS {
+    numero_logique_de_la_situation_de_facturation_du_ps: u8,
+    mode_d_exercice: String,
+    statut_d_exercice: String,
+    secteur_d_activite: String,
+    type_d_identification_structure: String,
+    numero_d_identification_structure: String,
+    cle_du_numero_d_identification_structure: String,
+    raison_sociale_structure: String,
+    numero_d_identification_de_facturation_du_ps: String,
+    cle_du_numero_d_identification_de_facturation_du_ps: String,
+    numero_d_identification_du_ps_remplaçant: String,
+    cle_du_numero_d_identification_du_ps_remplaçant: String,
+    code_conventionnel: String,
+    code_specialite: String,
+    code_zone_tarifaire: String,
+    code_zone_ik: String,
+    code_agrement_1: String,
+    code_agrement_2: String,
+    code_agrement_3: String,
+    habilitation_à_signer_une_facture: String,
+    habilitation_à_signer_un_lot: String,
+}
+
+pub fn lire_carte(code_pin: &str, lecteur: &str) -> Result<CartePS, CartePSError> {
+    let resource_ps = CString::new(lecteur)?;
+    let resource_reader = CString::new("")?;
+    let card_number = CString::new(code_pin)?;
+
+    let mut buffer: *mut c_void = ptr::null_mut();
+    let mut size: size_t = 0;
+    let mut hex_values: &[u8] = &[];
+    unsafe {
+        let result = SSV_LireCartePS(
+            resource_ps.as_ptr(),
+            resource_reader.as_ptr(),
+            card_number.as_ptr(),
+            &mut buffer,
+            &mut size,
+        );
+        println!("SSV_LireCartePS result: {}", result);
+        if result != 0 {
+            return Err(libssv::LibSSVError::StandardErrorCode {
+                code: result,
+                function: "SSV_LireCartePS",
+            }
+            .into());
+        }
+
+        if !buffer.is_null() {
+            hex_values = std::slice::from_raw_parts(buffer as *const u8, size);
+            libc::free(buffer);
+        }
+    }
+    let groups =
+        decode_ssv_memory(hex_values, hex_values.len()).map_err(CartePSError::SSVMemory)?;
+    decode_carte_ps(groups)
+}
+
+fn get_last_mut_situation(carte_ps: &mut CartePS) -> Result<&mut SituationPS, CartePSError> {
+    carte_ps
+        .situations
+        .last_mut()
+        .ok_or(CartePSError::InvalidLastSituation)
+}
+
+fn decode_carte_ps(groups: Vec<Block>) -> Result<CartePS, CartePSError> {
+    let mut carte_ps = CartePS::default();
+    for group in groups {
+        for field in group.content {
+            match (group.id, field.id) {
+                (1, 1) => {
+                    carte_ps.titulaire.type_de_carte_ps =
+                        String::from_utf8_lossy(field.content).to_string();
+                }
+                (1, 2) => {
+                    carte_ps.titulaire.type_d_identification_nationale =
+                        String::from_utf8_lossy(field.content).to_string();
+                }
+                (1, 3) => {
+                    carte_ps.titulaire.numero_d_identification_nationale =
+                        String::from_utf8_lossy(field.content).to_string();
+                }
+                (1, 4) => {
+                    carte_ps.titulaire.cle_du_numero_d_identification_nationale =
+                        String::from_utf8_lossy(field.content).to_string();
+                }
+                (1, 5) => {
+                    carte_ps.titulaire.code_civilite =
+                        String::from_utf8_lossy(field.content).to_string();
+                }
+                (1, 6) => {
+                    carte_ps.titulaire.nom_du_ps =
+                        String::from_utf8_lossy(field.content).to_string();
+                }
+                (1, 7) => {
+                    carte_ps.titulaire.prenom_du_ps =
+                        String::from_utf8_lossy(field.content).to_string();
+                }
+                (1, 8) => {
+                    let byte = field.content[0];
+                    carte_ps.titulaire.categorie_carte = byte as char;
+                }
+                (2..=16, 1) => {
+                    carte_ps.situations.push(SituationPS::default());
+                    get_last_mut_situation(&mut carte_ps)?
+                        .numero_logique_de_la_situation_de_facturation_du_ps = field.content[0];
+                }
+                (2..=16, 2) => {
+                    get_last_mut_situation(&mut carte_ps)?.mode_d_exercice =
+                        String::from_utf8_lossy(field.content).to_string();
+                }
+                (2..=16, 3) => {
+                    get_last_mut_situation(&mut carte_ps)?.statut_d_exercice =
+                        String::from_utf8_lossy(field.content).to_string();
+                }
+                (2..=16, 4) => {
+                    get_last_mut_situation(&mut carte_ps)?.secteur_d_activite =
+                        String::from_utf8_lossy(field.content).to_string();
+                }
+                (2..=16, 5) => {
+                    get_last_mut_situation(&mut carte_ps)?.type_d_identification_structure =
+                        String::from_utf8_lossy(field.content).to_string();
+                }
+                (2..=16, 6) => {
+                    get_last_mut_situation(&mut carte_ps)?.numero_d_identification_structure =
+                        String::from_utf8_lossy(field.content).to_string();
+                }
+                (2..=16, 7) => {
+                    get_last_mut_situation(&mut carte_ps)?
+                        .cle_du_numero_d_identification_structure =
+                        String::from_utf8_lossy(field.content).to_string();
+                }
+                (2..=16, 8) => {
+                    get_last_mut_situation(&mut carte_ps)?.raison_sociale_structure =
+                        String::from_utf8_lossy(field.content).to_string();
+                }
+                (2..=16, 9) => {
+                    get_last_mut_situation(&mut carte_ps)?
+                        .numero_d_identification_de_facturation_du_ps =
+                        String::from_utf8_lossy(field.content).to_string();
+                }
+                (2..=16, 10) => {
+                    get_last_mut_situation(&mut carte_ps)?
+                        .cle_du_numero_d_identification_de_facturation_du_ps =
+                        String::from_utf8_lossy(field.content).to_string();
+                }
+                (2..=16, 11) => {
+                    get_last_mut_situation(&mut carte_ps)?
+                        .numero_d_identification_du_ps_remplaçant =
+                        String::from_utf8_lossy(field.content).to_string();
+                }
+                (2..=16, 12) => {
+                    get_last_mut_situation(&mut carte_ps)?
+                        .cle_du_numero_d_identification_du_ps_remplaçant =
+                        String::from_utf8_lossy(field.content).to_string();
+                }
+                (2..=16, 13) => {
+                    get_last_mut_situation(&mut carte_ps)?.code_conventionnel =
+                        String::from_utf8_lossy(field.content).to_string();
+                }
+                (2..=16, 14) => {
+                    get_last_mut_situation(&mut carte_ps)?.code_specialite =
+                        String::from_utf8_lossy(field.content).to_string();
+                }
+                (2..=16, 15) => {
+                    get_last_mut_situation(&mut carte_ps)?.code_zone_tarifaire =
+                        String::from_utf8_lossy(field.content).to_string();
+                }
+                (2..=16, 16) => {
+                    get_last_mut_situation(&mut carte_ps)?.code_zone_ik =
+                        String::from_utf8_lossy(field.content).to_string();
+                }
+                (2..=16, 17) => {
+                    get_last_mut_situation(&mut carte_ps)?.code_agrement_1 =
+                        String::from_utf8_lossy(field.content).to_string();
+                }
+                (2..=16, 18) => {
+                    get_last_mut_situation(&mut carte_ps)?.code_agrement_2 =
+                        String::from_utf8_lossy(field.content).to_string();
+                }
+                (2..=16, 19) => {
+                    get_last_mut_situation(&mut carte_ps)?.code_agrement_3 =
+                        String::from_utf8_lossy(field.content).to_string();
+                }
+                (2..=16, 20) => {
+                    get_last_mut_situation(&mut carte_ps)?.habilitation_à_signer_une_facture =
+                        String::from_utf8_lossy(field.content).to_string();
+                }
+                (2..=16, 21) => {
+                    get_last_mut_situation(&mut carte_ps)?.habilitation_à_signer_un_lot =
+                        String::from_utf8_lossy(field.content).to_string();
+                }
+                _ => {
+                    return Err(CartePSError::UnknownGroupFieldPair {
+                        group: group.id,
+                        field: field.id,
+                    });
+                }
+            }
+        }
+    }
+    Ok(carte_ps)
+}
+
+#[cfg(test)]
+mod test_decode_carte_ps {
+    use super::*;
+
+    #[test]
+    fn test_francoise_pharmacien0052419() {
+        let bytes: &[u8] = &[
+            0, 1, 51, // Block 01, Content size 51
+            1, 48, // Field 01, Content size 1
+            1, 56, // Field 02, Content size 1
+            11, 57, 57, 55, 48, 48, 53, 50, 52, 49, 57, 52, // Field 03, Content size 11
+            1, 52, // Field 04, Content size 1
+            2, 50, 50, // Field 05, Content size 2
+            17, 80, 72, 65, 82, 77, 65, 67, 73, 69, 78, 48, 48, 53, 50, 52, 49,
+            57, // Field 06, Content size 17
+            9, 70, 82, 65, 78, 67, 79, 73, 83, 69, // Field 07, Content size 9
+            1, 84, // Field 08, Content size 1
+            0, 2, 83, // Block 02, Content size 83
+            1, 1, 1, 48, 1, 49, 2, 56, 54, 1, 49, 9, 48, 66, 48, 50, 50, 49, 57, 53, 56, 1, 56, 24,
+            80, 72, 65, 82, 77, 65, 67, 73, 69, 32, 68, 85, 32, 67, 69, 78, 84, 82, 69, 50, 50, 49,
+            57, 53, 8, 48, 48, 50, 48, 50, 52, 49, 57, 1, 56, 0, 1, 48, 1, 49, 2, 53, 48, 2, 49,
+            48, 2, 48, 48, 1, 48, 1, 48, 1, 48, 1, 49, 1, 49,
+        ];
+        let blocks = decode_ssv_memory(bytes, bytes.len()).unwrap();
+        let carte_ps = decode_carte_ps(blocks).unwrap();
+
+        assert_eq!(carte_ps.titulaire.type_de_carte_ps, "0");
+        assert_eq!(carte_ps.titulaire.type_d_identification_nationale, "8");
+        assert_eq!(
+            carte_ps.titulaire.numero_d_identification_nationale,
+            "99700524194"
+        );
+        assert_eq!(
+            carte_ps.titulaire.cle_du_numero_d_identification_nationale,
+            "4"
+        );
+        assert_eq!(carte_ps.titulaire.code_civilite, "22");
+        assert_eq!(carte_ps.titulaire.nom_du_ps, "PHARMACIEN0052419");
+        assert_eq!(carte_ps.titulaire.prenom_du_ps, "FRANCOISE");
+        assert_eq!(carte_ps.titulaire.categorie_carte, 'T');
+
+        assert_eq!(carte_ps.situations.len(), 1);
+        assert_eq!(
+            carte_ps.situations[0].numero_logique_de_la_situation_de_facturation_du_ps,
+            1
+        );
+        assert_eq!(carte_ps.situations[0].mode_d_exercice, "0");
+        assert_eq!(carte_ps.situations[0].statut_d_exercice, "1");
+        assert_eq!(carte_ps.situations[0].secteur_d_activite, "86");
+        assert_eq!(carte_ps.situations[0].type_d_identification_structure, "1");
+        assert_eq!(
+            carte_ps.situations[0].numero_d_identification_structure,
+            "0B0221958"
+        );
+        assert_eq!(
+            carte_ps.situations[0].cle_du_numero_d_identification_structure,
+            "8"
+        );
+        assert_eq!(
+            carte_ps.situations[0].raison_sociale_structure,
+            "PHARMACIE DU CENTRE22195"
+        );
+        assert_eq!(
+            carte_ps.situations[0].numero_d_identification_de_facturation_du_ps,
+            "00202419"
+        );
+        assert_eq!(
+            carte_ps.situations[0].cle_du_numero_d_identification_de_facturation_du_ps,
+            "8"
+        );
+        assert_eq!(
+            carte_ps.situations[0].numero_d_identification_du_ps_remplaçant,
+            ""
+        );
+        assert_eq!(
+            carte_ps.situations[0].cle_du_numero_d_identification_du_ps_remplaçant,
+            "0"
+        );
+        assert_eq!(carte_ps.situations[0].code_conventionnel, "1");
+        assert_eq!(carte_ps.situations[0].code_specialite, "50");
+        assert_eq!(carte_ps.situations[0].code_zone_tarifaire, "10");
+        assert_eq!(carte_ps.situations[0].code_zone_ik, "00");
+        assert_eq!(carte_ps.situations[0].code_agrement_1, "0");
+        assert_eq!(carte_ps.situations[0].code_agrement_2, "0");
+        assert_eq!(carte_ps.situations[0].code_agrement_3, "0");
+        assert_eq!(
+            carte_ps.situations[0].habilitation_à_signer_une_facture,
+            "1"
+        );
+        assert_eq!(carte_ps.situations[0].habilitation_à_signer_un_lot, "1");
+    }
+
+    #[test]
+    fn test_multiple_situations() {
+        let bytes: &[u8] = &[
+            0, 1, 51, // Block 01, Content size 51
+            1, 48, 1, 56, 11, 57, 57, 55, 48, 48, 53, 50, 52, 49, 57, 52, 1, 52, 2, 50, 50, 17, 80,
+            72, 65, 82, 77, 65, 67, 73, 69, 78, 48, 48, 53, 50, 52, 49, 57, 9, 70, 82, 65, 78, 67,
+            79, 73, 83, 69, 1, 84, 0, 2, 83, // Block 02, Content size 83
+            1, 1, 1, 48, 1, 49, 2, 56, 54, 1, 49, 9, 48, 66, 48, 50, 50, 49, 57, 53, 56, 1, 56, 24,
+            80, 72, 65, 82, 77, 65, 67, 73, 69, 32, 68, 85, 32, 67, 69, 78, 84, 82, 69, 50, 50, 49,
+            57, 53, 8, 48, 48, 50, 48, 50, 52, 49, 57, 1, 56, 0, 1, 48, 1, 49, 2, 53, 48, 2, 49,
+            48, 2, 48, 48, 1, 48, 1, 48, 1, 48, 1, 49, 1, 49, 0, 3,
+            83, // Block 03, Content size 83
+            1, 1, 1, 48, 1, 49, 2, 56, 54, 1, 49, 9, 48, 66, 48, 50, 50, 49, 57, 53, 56, 1, 56, 24,
+            80, 72, 65, 82, 77, 65, 67, 73, 69, 32, 68, 85, 32, 67, 69, 78, 84, 82, 69, 50, 50, 49,
+            57, 53, 8, 48, 48, 50, 48, 50, 52, 49, 57, 1, 56, 0, 1, 48, 1, 49, 2, 53, 48, 2, 49,
+            48, 2, 48, 48, 1, 48, 1, 48, 1, 48, 1, 49, 1, 49, 0, 4,
+            83, // Block 04, Content size 83
+            1, 1, 1, 48, 1, 49, 2, 56, 54, 1, 49, 9, 48, 66, 48, 50, 50, 49, 57, 53, 56, 1, 56, 24,
+            80, 72, 65, 82, 77, 65, 67, 73, 69, 32, 68, 85, 32, 67, 69, 78, 84, 82, 69, 50, 50, 49,
+            57, 53, 8, 48, 48, 50, 48, 50, 52, 49, 57, 1, 56, 0, 1, 48, 1, 49, 2, 53, 48, 2, 49,
+            48, 2, 48, 48, 1, 48, 1, 48, 1, 48, 1, 49, 1, 49,
+        ];
+        let blocks = decode_ssv_memory(bytes, bytes.len()).unwrap();
+        let carte_ps = decode_carte_ps(blocks).unwrap();
+
+        assert_eq!(carte_ps.situations.len(), 3);
+        assert_eq!(
+            carte_ps.situations[0].raison_sociale_structure,
+            "PHARMACIE DU CENTRE22195"
+        );
+        assert_eq!(
+            carte_ps.situations[1].raison_sociale_structure,
+            "PHARMACIE DU CENTRE22195"
+        );
+        assert_eq!(
+            carte_ps.situations[2].raison_sociale_structure,
+            "PHARMACIE DU CENTRE22195"
+        );
+    }
+
+    #[test]
+    #[should_panic]
+    fn test_missing_field() {
+        todo!();
+    }
+
+    #[test]
+    #[should_panic]
+    fn test_unknown_group_field_pair() {
+        todo!();
+    }
+
+    #[test]
+    #[should_panic]
+    fn test_invalid_field_format() {
+        todo!();
+    }
+}

crates/sesam-vitale/src/lib.rs

@@ -1,3 +1,8 @@
+pub mod cps;
+pub mod libssv;
+pub mod ssv_memory;
+pub mod ssvlib_demo;
+
 pub fn add(left: usize, right: usize) -> usize {
     left + right
 }

crates/sesam-vitale/src/libssv.rs

@@ -1,17 +1,30 @@
-/**
- * libssv.rs
- * 
- * Low level bindings to the SSVLIB dynamic library.
- * TODO : look for creating a dedicated *-sys crate : https://kornel.ski/rust-sys-crate
- */
+/// libssv.rs
+///
+/// Low level bindings to the SSVLIB dynamic library.
+// TODO : look for creating a dedicated *-sys crate : https://kornel.ski/rust-sys-crate
+use libc::{c_char, c_ushort, c_void, size_t};
+use thiserror::Error;
 
-use libc::{ c_char, c_void, c_ushort, size_t };
+#[derive(Debug, Error)]
+pub enum LibSSVError {
+    #[error("SSV library error in {function}: {code}")]
+    StandardErrorCode { code: u16, function: &'static str },
+}
 
 #[cfg_attr(target_os = "linux", link(name = "ssvlux64"))]
 #[cfg_attr(target_os = "windows", link(name = "ssvw64"))]
 extern "C" {
     pub fn SSV_InitLIB2(pcRepSesamIni: *const c_char) -> c_ushort;
-    pub fn SSV_LireCartePS(NomRessourcePS: *const c_char, NomRessourceLecteur: *const c_char, CodePorteurPS: *const c_char, ZDonneesSortie: *mut *mut c_void, TTailleDonneesSortie: *mut size_t) -> c_ushort;
-    pub fn SSV_LireConfig(ZDonneesSortie: *mut *mut c_void, TTailleDonneesSortie: *mut size_t) -> c_ushort;
+    pub fn SSV_LireCartePS(
+        NomRessourcePS: *const c_char,
+        NomRessourceLecteur: *const c_char,
+        CodePorteurPS: *const c_char,
+        ZDonneesSortie: *mut *mut c_void,
+        TTailleDonneesSortie: *mut size_t,
+    ) -> c_ushort;
+    pub fn SSV_LireConfig(
+        ZDonneesSortie: *mut *mut c_void,
+        TTailleDonneesSortie: *mut size_t,
+    ) -> c_ushort;
 }
-/* TODO : replace void* by Rust struct : https://doc.rust-lang.org/nomicon/ffi.html#representing-opaque-structs */
+// TODO : replace void* by Rust struct : https://doc.rust-lang.org/nomicon/ffi.html#representing-opaque-structs

crates/sesam-vitale/src/main.rs

@@ -1,6 +1,10 @@
-mod ssvlib_demo;
+mod cps;
 mod libssv;
+mod ssv_memory;
+mod ssvlib_demo;
 
-fn main() {
-    ssvlib_demo::demo();
+use anyhow::{Context, Result};
+
+fn main() -> Result<()> {
+    ssvlib_demo::demo().context("Error while running the SSV library demo")
 }

crates/sesam-vitale/src/ssv_memory.rs

@@ -0,0 +1,358 @@
+/// # SSV Memory
+/// Provide functions to manipulate raw memory from SSV library.
+use std::convert::TryFrom;
+use thiserror::Error;
+
+#[derive(Debug, Error)]
+pub enum BytesReadingError {
+    #[error("Empty bytes input")]
+    EmptyBytes,
+    #[error("Invalid memory: not enough bytes ({actual}) to read the expected size ({expected})")]
+    InvalidSize { expected: usize, actual: usize },
+    #[error("Invalid memory: size ({actual}) is expected to be less than {expected} bytes")]
+    SizeTooBig { expected: usize, actual: usize },
+    #[error("Invalid memory: not enough bytes to read the block id")]
+    InvalidBlockId(#[from] std::array::TryFromSliceError),
+    #[error("Error while reading field at offset {offset}")]
+    InvalidField {
+        source: Box<BytesReadingError>,
+        offset: usize,
+    },
+}
+
+#[derive(Debug, Error)]
+pub enum SSVMemoryError {
+    #[error("Error while parsing block at offset {offset}")]
+    BlockParsing {
+        source: BytesReadingError,
+        offset: usize,
+    },
+}
+
+#[derive(PartialEq, Debug)]
+struct ElementSize {
+    pub size: usize,
+    pub pad: usize,
+}
+
+// TODO : Est-ce qu'on pourrait/devrait définir un type custom pour représenter les tableaux de bytes ?
+impl TryFrom<&[u8]> for ElementSize {
+    type Error = BytesReadingError;
+
+    fn try_from(bytes: &[u8]) -> Result<Self, Self::Error> {
+        if bytes.is_empty() {
+            return Err(BytesReadingError::EmptyBytes);
+        }
+
+        let mut element_size = ElementSize { size: 0, pad: 1 };
+        // Longueur:
+        //   - si le bit de poids fort du premier octet est à 0, la longueur est codée sur un octet
+        //   - si le bit de poids fort du premier octet est à 1, les 7 bits de poids faible codent le nombre d'octets utilisés pour coder la longueur
+        if bytes[0] & 0b1000_0000 == 0 {
+            // Size coded on 1 byte
+            element_size.size = bytes[0] as usize;
+        } else {
+            // Size coded on N bytes
+            // N are the 7 lower bits of the first byte
+            let size_bytes_len = (bytes[0] & 0b0111_1111) as usize;
+            if size_bytes_len > bytes.len() - 1 {
+                return Err(BytesReadingError::InvalidSize {
+                    expected: size_bytes_len,
+                    actual: bytes.len() - 1,
+                });
+            } else if size_bytes_len > 4 {
+                return Err(BytesReadingError::SizeTooBig {
+                    expected: 4,
+                    actual: size_bytes_len,
+                });
+            }
+            let size_bytes = &bytes[1..1 + size_bytes_len];
+
+            // u32::from_be_bytes() requires a 4 bytes array
+            let mut padded_bytes = [0u8; 4];
+            padded_bytes[size_bytes_len..].copy_from_slice(size_bytes);
+
+            element_size.size = u32::from_be_bytes(padded_bytes) as usize;
+            element_size.pad += size_bytes_len;
+        }
+        Ok(element_size)
+    }
+}
+
+#[derive(Debug)]
+pub struct Block<'a> {
+    pub id: u16,
+    pub size: usize,
+    pub content: Vec<Field<'a>>,
+}
+
+impl<'a> TryFrom<&'a [u8]> for Block<'a> {
+    type Error = BytesReadingError;
+
+    fn try_from(bytes: &'a [u8]) -> Result<Self, Self::Error> {
+        let mut offset = 0;
+        let id = u16::from_be_bytes(
+            bytes[..2]
+                .try_into()
+                .map_err(BytesReadingError::InvalidBlockId)?,
+        );
+        offset += 2;
+        let ElementSize {
+            size: block_size,
+            pad,
+        } = bytes[2..].try_into()?;
+        offset += pad;
+        let raw_content = &bytes[offset..];
+        let mut field_offset = 0;
+        // While there is still content to read, parse Fields
+        let mut content = Vec::new();
+        let mut field_id = 1;
+        while field_offset < block_size {
+            let mut field: Field<'a> = raw_content[field_offset..].try_into().map_err(|err| {
+                BytesReadingError::InvalidField {
+                    source: Box::new(err),
+                    offset: field_offset,
+                }
+            })?;
+            field.id = field_id;
+            field_offset += field.size;
+            field_id += 1;
+            content.push(field);
+        }
+        Ok(Block {
+            id,
+            size: offset + block_size,
+            content,
+        })
+    }
+}
+
+#[derive(Debug)]
+pub struct Field<'a> {
+    pub id: u16,
+    pub size: usize,
+    pub content: &'a [u8],
+}
+
+impl<'a> TryFrom<&'a [u8]> for Field<'a> {
+    type Error = BytesReadingError;
+
+    fn try_from(bytes: &'a [u8]) -> Result<Self, Self::Error> {
+        let ElementSize { size, pad } = bytes.try_into()?;
+        let contenu = &bytes[pad..pad + size];
+        Ok(Field {
+            id: 0,
+            size: pad + size,
+            content: contenu,
+        })
+    }
+}
+
+pub fn decode_ssv_memory(bytes: &[u8], size: usize) -> Result<Vec<Block>, SSVMemoryError> {
+    let mut blocks: Vec<Block> = Vec::new();
+    let mut offset = 0;
+    while offset < size {
+        let block: Block =
+            bytes[offset..]
+                .try_into()
+                .map_err(|err| SSVMemoryError::BlockParsing {
+                    source: err,
+                    offset,
+                })?;
+        offset += block.size;
+        blocks.push(block);
+    }
+    Ok(blocks)
+}
+
+#[cfg(test)]
+mod test_element_size {
+    use std::any::Any;
+
+    use super::*;
+
+    #[test]
+    fn short_size() {
+        let bytes: &[u8] = &[0b_0000_0001_u8];
+        let element_size: ElementSize = bytes.try_into().unwrap();
+        assert_eq!(element_size.size, 1);
+        assert_eq!(element_size.pad, 1);
+
+        let bytes: &[u8] = &[0b_0100_0000_u8];
+        let element_size: ElementSize = bytes.try_into().unwrap();
+        assert_eq!(element_size.size, 64);
+        assert_eq!(element_size.pad, 1);
+    }
+
+    #[test]
+    fn long_size() {
+        let bytes: &[u8] = &[0b_1000_0010_u8, 0b_0000_0001_u8, 0b_0100_0000_u8];
+        let element_size: ElementSize = bytes.try_into().unwrap();
+        assert_eq!(element_size.size, 320);
+        assert_eq!(element_size.pad, 3);
+    }
+
+    #[test]
+    fn null_size() {
+        let bytes: &[u8] = &[];
+        let result: Result<ElementSize, BytesReadingError> = bytes.try_into();
+        assert!(result.is_err());
+        assert_eq!(
+            result.unwrap_err().type_id(),
+            BytesReadingError::EmptyBytes.type_id()
+        );
+    }
+
+    #[test]
+    fn invalid_memory() {
+        let bytes: &[u8] = &[0b_1000_0001_u8];
+        let result: Result<ElementSize, BytesReadingError> = bytes.try_into();
+        assert!(result.is_err());
+        assert_eq!(
+            result.unwrap_err().to_string(),
+            BytesReadingError::InvalidSize {
+                expected: 1,
+                actual: 0
+            }
+            .to_string()
+        );
+
+        let bytes: &[u8] = &[0b_1000_0010_u8, 1];
+        let result: Result<ElementSize, BytesReadingError> = bytes.try_into();
+        assert!(result.is_err());
+        assert_eq!(
+            result.unwrap_err().to_string(),
+            BytesReadingError::InvalidSize {
+                expected: 2,
+                actual: 1
+            }
+            .to_string()
+        );
+
+        let bytes: &[u8] = &[0b_1000_0101_u8, 1, 1, 1, 1, 1];
+        let result: Result<ElementSize, BytesReadingError> = bytes.try_into();
+        assert!(result.is_err());
+        assert_eq!(
+            result.unwrap_err().to_string(),
+            BytesReadingError::SizeTooBig {
+                expected: 4,
+                actual: 5
+            }
+            .to_string()
+        );
+    }
+}
+
+#[cfg(test)]
+mod test_field {
+    use super::*;
+
+    #[test]
+    fn short_size() {
+        let bytes: &[u8] = &[
+            51, 1, 48, 1, 56, 11, 57, 57, 55, 48, 48, 53, 50, 52, 49, 57, 52, 1, 52, 2, 50, 50, 17,
+            80, 72, 65, 82, 77, 65, 67, 73, 69, 78, 48, 48, 53, 50, 52, 49, 57, 9, 70, 82, 65, 78,
+            67, 79, 73, 83, 69, 1, 84,
+        ];
+        let element: Field = bytes.try_into().unwrap();
+        assert_eq!(element.size, 52);
+        assert_eq!(element.content[..5], [1, 48, 1, 56, 11]);
+    }
+
+    #[test]
+    fn long_size() {
+        let mut bytes_vec = vec![
+            0b_1000_0010_u8,
+            0b_0000_0001_u8,
+            0b_0000_0000_u8, // size = 256
+        ];
+        // Add 256 bytes to the content
+        bytes_vec.append(&mut vec![1; 256]);
+        let bytes: &[u8] = &bytes_vec;
+        let element: Field = bytes.try_into().unwrap();
+        assert_eq!(element.size, 259);
+        assert_eq!(element.content.len(), 256);
+    }
+}
+
+#[cfg(test)]
+mod test_block {
+    use super::*;
+
+    #[test]
+    fn test_francoise_pharmacien0052419_partial_block_1() {
+        let bytes: &[u8] = &[1, 48, 1, 56, 11, 57, 57, 55, 48, 48, 53, 50, 52, 49, 57, 52];
+
+        let field1: Field = bytes.try_into().unwrap();
+        assert_eq!(field1.size, 2);
+        assert_eq!(field1.content, &[48]);
+
+        let field2: Field = bytes[field1.size..].try_into().unwrap();
+        assert_eq!(field2.size, 2);
+        assert_eq!(field2.content, &[56]);
+
+        let field3: Field = bytes[field1.size + field2.size..].try_into().unwrap();
+        assert_eq!(field3.size, 12);
+        assert_eq!(
+            field3.content,
+            &[57, 57, 55, 48, 48, 53, 50, 52, 49, 57, 52]
+        );
+    }
+
+    #[test]
+    fn test_francoise_pharmacien0052419() {
+        let bytes: &[u8] = &[
+            0, 1, 51, // 3
+            1, 48, // 2
+            1, 56, // 2
+            11, 57, 57, 55, 48, 48, 53, 50, 52, 49, 57, 52, // 12
+            1, 52, // 2
+            2, 50, 50, // 3
+            17, 80, 72, 65, 82, 77, 65, 67, 73, 69, 78, 48, 48, 53, 50, 52, 49, 57, // 18
+            9, 70, 82, 65, 78, 67, 79, 73, 83, 69, // 10
+            1, 84, // 2
+            // total: 54
+            0, 2, 83, 1, 1, 1, 48, 1, 49, 2, 56, 54, 1, 49, 9, 48, 66, 48, 50, 50, 49, 57, 53, 56,
+            1, 56, 24, 80, 72, 65, 82, 77, 65, 67, 73, 69, 32, 68, 85, 32, 67, 69, 78, 84, 82, 69,
+            50, 50, 49, 57, 53, 8, 48, 48, 50, 48, 50, 52, 49, 57, 1, 56, 0, 1, 48, 1, 49, 2, 53,
+            48, 2, 49, 48, 2, 48, 48, 1, 48, 1, 48, 1, 48, 1, 49, 1, 49,
+        ];
+
+        let first_block: Block = bytes.try_into().unwrap();
+        assert_eq!(first_block.id, 1);
+        assert_eq!(first_block.size, 54);
+        assert_eq!(first_block.content.len(), 8);
+
+        let second_block: Block = bytes[first_block.size..].try_into().unwrap();
+        assert_eq!(second_block.id, 2);
+        assert_eq!(second_block.size, 86);
+        assert_eq!(second_block.content.len(), 21);
+    }
+}
+
+#[cfg(test)]
+mod test_decode_ssv_memory {
+    use super::*;
+
+    #[test]
+    fn test_francoise_pharmacien0052419() {
+        let bytes: &[u8] = &[
+            0, 1, 51, // 3
+            1, 48, // 2
+            1, 56, // 2
+            11, 57, 57, 55, 48, 48, 53, 50, 52, 49, 57, 52, // 12
+            1, 52, // 2
+            2, 50, 50, // 3
+            17, 80, 72, 65, 82, 77, 65, 67, 73, 69, 78, 48, 48, 53, 50, 52, 49, 57, // 18
+            9, 70, 82, 65, 78, 67, 79, 73, 83, 69, // 10
+            1, 84, // 2
+            // total: 54
+            0, 2, 83, 1, 1, 1, 48, 1, 49, 2, 56, 54, 1, 49, 9, 48, 66, 48, 50, 50, 49, 57, 53, 56,
+            1, 56, 24, 80, 72, 65, 82, 77, 65, 67, 73, 69, 32, 68, 85, 32, 67, 69, 78, 84, 82, 69,
+            50, 50, 49, 57, 53, 8, 48, 48, 50, 48, 50, 52, 49, 57, 1, 56, 0, 1, 48, 1, 49, 2, 53,
+            48, 2, 49, 48, 2, 48, 48, 1, 48, 1, 48, 1, 48, 1, 49, 1, 49,
+        ];
+        let blocks = decode_ssv_memory(bytes, bytes.len()).unwrap();
+        assert_eq!(blocks.len(), 2);
+    }
+}

crates/sesam-vitale/src/ssvlib_demo.rs

@@ -1,69 +1,54 @@
-/**
- * High level API for the SSV library,
- * based on the low level bindings in libssv.rs.
- * 
- */
-
-extern crate libc;
-extern crate dotenv;
-
-use libc::{ c_void, size_t };
-use std::ffi::CString;
-use std::path::PathBuf;
-use std::ptr;
-
+/// High level API for the SSV library,
+/// based on the low level bindings in libssv.rs.
+use libc::{c_void, size_t};
 use std::env;
+use std::ffi::CString;
+use std::ptr;
+use thiserror::Error;
 
-use crate::libssv:: {
-    SSV_InitLIB2,
-    SSV_LireCartePS,
-    SSV_LireConfig
-};
+use crate::cps::lire_carte;
+use crate::libssv::{SSV_InitLIB2, SSV_LireConfig};
 
-fn ssv_init_lib_2() {
+use ::utils::config::load_config;
+
+#[derive(Error, Debug)]
+pub enum SSVDemoError {
+    #[error(transparent)]
+    CartePSReading(#[from] crate::cps::CartePSError),
+    #[error(transparent)]
+    SSVLibErrorCode(#[from] crate::libssv::LibSSVError),
+}
+
+fn ssv_init_lib_2() -> Result<(), SSVDemoError> {
     let ini_str = env::var("SESAM_INI_PATH").expect("SESAM_INI_PATH must be set");
     let ini = CString::new(ini_str).expect("CString::new failed");
     unsafe {
         let result = SSV_InitLIB2(ini.as_ptr());
         println!("SSV_InitLIB2 result: {}", result);
+        if result != 0 {
+            return Err(crate::libssv::LibSSVError::StandardErrorCode {
+                code: result,
+                function: "SSV_InitLIB2",
             }
+            .into());
+        }
+    }
+    Ok(())
 }
 
-fn ssv_lire_carte_ps() {
-    let resource_ps = CString::new("PS").expect("CString::new failed");
-    let resource_reader = CString::new("TRANSPA1").expect("CString::new failed");
-    let card_number = CString::new("1234567890").expect("CString::new failed");
-
-    let mut buffer: *mut c_void = ptr::null_mut();
-    let mut size: size_t = 0;
-    unsafe {
-        let result = SSV_LireCartePS(
-            resource_ps.as_ptr(),
-            resource_reader.as_ptr(),
-            card_number.as_ptr(),
-            &mut buffer,
-            &mut size
-        );
-        println!("SSV_LireCartePS result: {}", result);
-
-        if !buffer.is_null() {
-            let hex_values = std::slice::from_raw_parts(buffer as *const u8, size);
-            for &byte in hex_values {
-                print!("{:02X} ", byte);
-            }
-            println!();
-
-            libc::free(buffer);
-        }
-    }
-}
-
-fn ssv_lire_config() {
+fn ssv_lire_config() -> Result<(), SSVDemoError> {
     let mut buffer: *mut c_void = ptr::null_mut();
     let mut size: size_t = 0;
     unsafe {
         let result = SSV_LireConfig(&mut buffer, &mut size);
         println!("SSV_LireConfig result: {}", result);
+        if result != 0 {
+            return Err(crate::libssv::LibSSVError::StandardErrorCode {
+                code: result,
+                function: "SSV_LireConfig",
+            }
+            .into());
+        }
 
         if !buffer.is_null() {
             let hex_values = std::slice::from_raw_parts(buffer as *const u8, size);
@@ -75,22 +60,26 @@ fn ssv_lire_config() {
             libc::free(buffer);
         }
     }
+    Ok(())
 }
 
-pub fn demo() {
-    /*
-     * TODO : this is probably not working on release, because I'm not sure it exists a CARGO_MANIFEST_DIR and so it can find the `.env`
-     * Maybe we could use a system standard config path to store a config file
-     */ 
-    let manifest_dir = env::var("CARGO_MANIFEST_DIR").unwrap();
-    let manifest_path = PathBuf::from(manifest_dir);
-    dotenv::from_path(manifest_path.join(".env")).ok();
+pub fn demo() -> Result<(), SSVDemoError> {
+    // TODO : this is probably not working on release, because I'm not sure it exists a CARGO_MANIFEST_DIR and so it can find the `.env`
+    // Maybe we could use a system standard config path to store a config file
 
     println!("------- Demo for the SSV library --------");
 
-    ssv_init_lib_2();
-    ssv_lire_carte_ps();
-    ssv_lire_config();
+    load_config()?;
+
+    ssv_init_lib_2()?;
+
+    let code_pin = "1234";
+    let lecteur = "HID Global OMNIKEY 3x21 Smart Card Reader 0";
+    let carte_ps = lire_carte(code_pin, lecteur)?;
+    println!("CartePS: {:#?}", carte_ps);
+
+    ssv_lire_config()?;
 
     println!("-----------------------------------------");
+    Ok(())
 }

crates/utils/Cargo.toml

@@ -0,0 +1,9 @@
+[package]
+name = "utils"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+anyhow = "1.0"
+directories = "5.0"
+dotenv = "0.15"

crates/utils/src/config.rs

@@ -0,0 +1,48 @@
+use std::{env, path::PathBuf};
+
+use anyhow::{bail, Context, Result};
+use directories::ProjectDirs;
+use dotenv::from_path;
+
+const CONFIG_FILE_NAME: &str = ".env";
+
+pub fn get_config_dirs() -> Vec<PathBuf> {
+    let mut config_dirs = vec![
+        PathBuf::from(""), // Current directory
+    ];
+    if let Ok(manifest_dir) = env::var("CARGO_MANIFEST_DIR") {
+        config_dirs.push(PathBuf::from(manifest_dir));
+    }
+    if let Some(proj_dirs) = ProjectDirs::from("org", "P4pillon", "Krys4lide") {
+        config_dirs.push(proj_dirs.config_dir().to_path_buf());
+    }
+    config_dirs
+}
+
+pub fn get_config_files() -> Result<Vec<PathBuf>> {
+    let config_dirs = get_config_dirs();
+    let mut config_files = Vec::new();
+    for config_dir in config_dirs.iter() {
+        let config_file = config_dir.join(CONFIG_FILE_NAME);
+        if config_file.exists() {
+            config_files.push(config_file);
+        }
+    }
+    if config_files.is_empty() {
+        bail!(
+            "No config file {CONFIG_FILE_NAME} found in the following directories: {config_dirs:#?}"
+        );
+    }
+    Ok(config_files)
+}
+
+pub fn load_config() -> Result<()> {
+    let config_files = get_config_files()?;
+    // Load the first config file found
+    // TODO: add a verbose log to list all config files found
+    println!(
+        "DEBUG: Config files found (1st loaded): {:#?}",
+        config_files
+    );
+    from_path(config_files[0].as_path()).context("Failed to load config file")
+}

crates/utils/src/lib.rs

@@ -0,0 +1 @@
+pub mod config;

docs/errors.md

@@ -0,0 +1,85 @@
+# Gestion des erreurs
+
+Ce document décrit comment les erreurs sont gérées dans le projet.
+
+## Gestion native
+
+Par principe, en Rust, on évite au maximum la gestion par exception, ne la réservant qu'aux situations où un crash du programme est la meilleure solution.
+En temps normal, on renvoie des `Result<Valeur, Erreur>` (pour les situations réussite/erreur) ou des `Option<Valeur>` (pour les situations valeur non-nulle/nulle).
+
+Quand on fait face à une situation d'erreur, on cherchera à la gérer de manière explicite (voir [Récupération des erreurs](#récupération-des-erreurs)) ou à la remonter à un niveau supérieur, généralement à l'aide de l'opérateur `?`.
+
+On évitera, par contre, au maximum de générer des exceptions (appelées "panics" en Rust), que ce soit par l'usage de `panic!` ou par des appels à des fonctions qui paniquent en cas d'erreur (comme `unwrap` ou `expect`).
+
+De nombreux exemples des idiomes natifs de gestion des erreurs en Rust sont disponibles dans la documentation [Rust by example](https://doc.rust-lang.org/rust-by-example/error.html).
+
+## Librairies de gestion des erreurs
+
+Deux librairies sont utilisées pour gérer les erreurs dans le projet :
+- [`anyhow`](https://docs.rs/anyhow/latest/anyhow/) : qui permet de renvoyer des erreurs faiblement typées, mais très facile à enrichir avec des messages d'explication. On l'utilise pour communiquer facilement des erreurs de haut niveau avec un utilisateur final.
+    ```rust
+    use anyhow::{anyhow, Result};
+
+    fn get_cluster_info() -> Result<ClusterInfo> {
+        let data = fs::read_to_string("cluster.json")
+            .with_context(|| "failed to read cluster config")?;
+        let info: ClusterInfo = serde_json::from_str(&data)
+            .with_context(|| "failed to parse cluster config")?;
+        Ok(info)
+    }
+    ```
+- [`thiserror`](https://docs.rs/thiserror/latest/thiserror/) : qui fournit des macros pour définir des erreurs fortement typées. On l'utilise pour définir des erreurs spécifiques à une partie du code, contextualisées avec des données structurées plutôt que de simples messages d'erreurs, afin de favoriser la "récupération" face aux erreurs.
+    ```rust
+    use thiserror::Error;
+
+    #[derive(Error, Debug)]
+    pub enum DataStoreError {
+        #[error("data store disconnected")]
+        Disconnect(#[from] io::Error),
+        #[error("the data for key `{0}` is not available")]
+        Redaction(String),
+        #[error("invalid header (expected {expected:?}, found {found:?})")]
+        InvalidHeader {
+            expected: String,
+            found: String,
+        },
+        #[error("unknown data store error")]
+        Unknown,
+    }
+    ```
+
+## Récupération des erreurs
+
+Dans la mesure du possible, on essaie de privilégier la "récupération" face à une erreur plutôt que le "crash". Les stratégies de récupération sont :
+- Réessayer l'opération, tel quel ou avec des paramètres différents
+- Contourner l'opération, en la remplaçant par une autre
+- À défaut, informer l'utilisateur de l'erreur et :
+    - arrêter / annuler l'opération en cours
+    - ignorer l'erreur et continuer l'exécution
+
+Quand on ne peut pas récupérer une erreur, on la remonte à un niveau supérieur, si besoin en la convertissant dans un type d'erreur plus générique et approprié au niveau considéré.
+
+## Conversion des erreurs
+
+Quand on remonte une erreur à un niveau supérieur, on peut être amené à la convertir dans un type d'erreur plus générique et approprié au niveau considéré. Pour faciliter cette conversion, on implémente le trait `From`. Avec `thiserror`, on peut utiliser l'attribut `#[from]` ou le paramètre `source` pour automatiser l'implémentation de telles conversions.
+
+On peut ensuite, lors de la gestion d'une erreur, on pourra :
+- soit directement renvoyer l'erreur à l'aide de l'opérateur `?`, qui se chargera de la conversion ;
+- soit convertir l'erreur explicitement, par exemple en utilisant la méthode `map_err` sur un `Result`, en particulier quand on veut enrichir l'erreur avec des informations supplémentaires.
+
+## Usages exceptionnels de `unwrap` et `expect`
+
+Provoquant des "panics" en cas d'erreur, les fonctions `unwrap` et `expect` ne doivent être utilisées que dans des cas exceptionnels :
+- Dans les tests, pour signaler une erreur de test
+- Au plus haut niveau de l'application, pour signaler une erreur fatale qui ne peut pas être récupérée
+- Dans des situations où l'erreur ne peut pas se produire, par exemple après une vérification de préconditions
+
+Dans l'idéal, on préférera l'usage de `expect` à `unwrap`, car il permet de donner un message d'erreur explicite.
+
+## Ressources
+
+- [The Rust Programming Language - Ch. 9: Error Handling](https://doc.rust-lang.org/book/ch09-00-error-handling.html)
+- [The NRC Book - Error Handling in Rust](https://nrc.github.io/error-docs/intro.html)
+- [The Error Design Patterns Book - by Project Error Handling WG](https://github.com/rust-lang/project-error-handling/blob/master/error-design-patterns-book/src/SUMMARY.md)
+- [The Rust Cookbook - Error Handling](https://rust-lang-nursery.github.io/rust-cookbook/error-handling.html)
+- [Le ticket initial de l'intégration de la gestion des erreurs dans le projet](https://forge.p4pillon.org/P4Pillon/Krys4lide/issues/34)