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Author SHA1 Message Date
geoffsee
95d9ba8925 add dedicated docs crate and refactor for improved stability 2025-06-17 12:32:03 -04:00
8 changed files with 576 additions and 257 deletions
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3
.gitignore vendored
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@@ -2,4 +2,5 @@
/node_modules/
/.wrangler/
/.idea/
/build/
/build/
/project

37
README.md
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@@ -2,19 +2,9 @@
[![Rust](https://github.com/seemueller-io/axum-tower-sessions-edge/actions/workflows/test.yaml/badge.svg)](https://github.com/seemueller-io/axum-tower-sessions-edge/actions/workflows/test.yaml)
[![License: MIT](https://img.shields.io/badge/License-MIT-green.svg)](https://opensource.org/licenses/MIT)
Warning: This API may be unstable.
> **Warning**: This API may be unstable.
Validates incoming requests for defined routes and forwards traffic to the service defined as `PROXY_TARGET`.
> Targets `wasm32-unknown-unknown`
## Features
- [OAuth 2.0](https://datatracker.ietf.org/doc/html/rfc6749)
- [Proof Key for Code Exchange (PKCE)](https://datatracker.ietf.org/doc/html/rfc7636)
- [OAuth 2.0 Token Introspection](https://datatracker.ietf.org/doc/html/rfc7662)
## Quickstart
```bash
```bash
git clone https://github.com/seemueller-io/axum-tower-sessions-edge.git
cd axum-tower-sessions-edge
bun install
@@ -31,29 +21,6 @@ bun install
npx wrangler dev
# Open `http://localhost:3000` in your browser. If everything is configured correctly, you should be taken to a Zitadel login page.
```
### Extras
Run your own Zitadel: `docker compose up -d`
> You will need to configure:
> - Organization
> - Project
> - Application - _Choose PKCE (with code)_
### Building
Sometimes the error messages are challenging to surface. Here are some alternative build commands that might help.
```bash
# Default build
npx wrangler build
# Build command as defined in wrangler.jsonc
cargo clean && cargo install -q worker-build && worker-build --release
# Hacky but effective (targets the common runtime)
cargo build --release --target wasm32-unknown-unknown
```
## Acknowledgements
This project is made possible thanks to:

81
src/config.rs Normal file
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@@ -0,0 +1,81 @@
//! Configuration management for the application.
//!
//! This module centralizes all configuration settings and provides validation
//! for required configuration at startup.
use std::fmt::Debug;
use worker::Env;
/// Constants for KV storage keys
pub const KV_STORAGE_BINDING: &str = "KV_STORAGE";
pub const SIGNING_KEY: &str = "keystore::sig";
pub const ENCRYPTION_KEY: &str = "keystore::enc";
/// Application configuration
#[derive(Clone, Debug)]
pub struct Config {
/// The URL of the authentication server
pub auth_server_url: String,
/// The client ID for OAuth authentication
pub client_id: String,
/// The client secret for OAuth authentication
pub client_secret: String,
/// The application URL
pub app_url: String,
/// Whether the application is running in development mode
pub dev_mode: bool,
}
impl Config {
/// Create a new configuration from environment variables
///
/// # Arguments
///
/// * `env` - The environment containing configuration values
///
/// # Returns
///
/// A Result containing the configuration or an error if required values are missing
pub fn from_env(env: &Env) -> Result<Self, ConfigError> {
let auth_server_url = env
.secret("AUTH_SERVER_URL")
.map_err(|_| ConfigError::MissingValue("AUTH_SERVER_URL"))?
.to_string();
let client_id = env
.secret("CLIENT_ID")
.map_err(|_| ConfigError::MissingValue("CLIENT_ID"))?
.to_string();
let client_secret = env
.secret("CLIENT_SECRET")
.map_err(|_| ConfigError::MissingValue("CLIENT_SECRET"))?
.to_string();
let app_url = env
.secret("APP_URL")
.map_err(|_| ConfigError::MissingValue("APP_URL"))?
.to_string();
let dev_mode = env
.var("DEV_MODE")
.map(|var| var.to_string() == "true")
.unwrap_or(false);
Ok(Config {
auth_server_url,
client_id,
client_secret,
app_url,
dev_mode,
})
}
}
/// Errors that can occur when loading configuration
#[derive(Debug, thiserror::Error)]
pub enum ConfigError {
/// A required configuration value is missing
#[error("Missing required configuration value: {0}")]
MissingValue(&'static str),
}

89
src/docs.rs Normal file
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@@ -0,0 +1,89 @@
//! # axum-tower-sessions-edge Documentation
//!
//! This module provides comprehensive documentation for the axum-tower-sessions-edge project.
//! It serves as a central place for understanding the project's architecture, components,
//! and usage patterns.
//!
//! ## Overview
//!
//! axum-tower-sessions-edge is a Rust library that validates incoming requests for defined routes
//! and forwards traffic to the service defined as `PROXY_TARGET`. It's designed to work with
//! Cloudflare Workers and targets the `wasm32-unknown-unknown` platform.
//!
//! ## Features
//!
//! - **OAuth 2.0**: Implementation of the OAuth 2.0 authorization framework
//! - **PKCE (Proof Key for Code Exchange)**: Enhanced security for OAuth 2.0
//! - **Token Introspection**: Validation of OAuth 2.0 tokens
//!
//! ## Architecture
//!
//! The project is organized into several modules:
//!
//! - **api**: Contains the API endpoints for both authenticated and public routes
//! - **axum_introspector**: Handles token introspection with Axum
//! - **credentials**: Manages authentication credentials
//! - **oidc**: Implements OpenID Connect functionality
//! - **session_storage**: Handles session management
//! - **utilities**: Provides utility functions
//! - **zitadel_http**: HTTP client for Zitadel
//!
//! ## Usage
//!
//! ### Basic Setup
//!
//! To use this library, you need to configure it with your OAuth 2.0 provider details:
//!
//! ```rust
//! // Example configuration (not actual code)
//! let introspection_state = IntrospectionStateBuilder::new("https://your-auth-server-url")
//! .with_basic_auth("your-client-id", "your-client-secret")
//! .with_introspection_cache(cache)
//! .build()
//! .await
//! .unwrap();
//! ```
//!
//! ### Authentication Flow
//!
//! The library implements a standard OAuth 2.0 flow:
//!
//! 1. User accesses a protected route
//! 2. If not authenticated, they are redirected to the login page
//! 3. User authenticates with the OAuth provider
//! 4. Provider redirects back with an authorization code
//! 5. The code is exchanged for tokens
//! 6. User session is established
//! 7. User is granted access to protected resources
//!
//! ## Components
//!
//! ### IntrospectionState
//!
//! Central component for token introspection and validation:
//!
//! ```rust
//! // Example usage (not actual code)
//! let introspection_state = IntrospectionStateBuilder::new(auth_server_url)
//! .with_basic_auth(client_id, client_secret)
//! .with_introspection_cache(cache)
//! .build()
//! .await?;
//! ```
//!
//! ### Session Management
//!
//! The library uses tower-sessions for session management:
//!
//! ```rust
//! // Example session setup (not actual code)
//! let session_layer = SessionManagerLayer::new(session_store)
//! .with_name("session")
//! .with_expiry(Expiry::OnSessionEnd)
//! .with_secure(!is_dev);
//! ```
//!
//! ## Deployment
//!
//! This library is designed to be deployed as a Cloudflare Worker. See the README.md for
//! detailed deployment instructions.

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src/error.rs Normal file
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@@ -0,0 +1,71 @@
//! Error handling for the application.
//!
//! This module provides centralized error handling functionality,
//! including middleware for handling introspection errors.
use axum::response::{IntoResponse, Redirect, Response};
use http::StatusCode;
/// Middleware for handling introspection errors.
///
/// This middleware checks for specific error headers and redirects
/// to the login page when appropriate.
pub async fn handle_introspection_errors(mut response: Response) -> Response {
let x_error_header_value = response
.headers()
.get("x-introspection-error")
.and_then(|header_value| header_value.to_str().ok());
// not used but is available
let x_session_header_value = response
.headers()
.get("x-session")
.and_then(|header_value| header_value.to_str().ok());
match response.status() {
StatusCode::UNAUTHORIZED => {
if let Some(x_error) = x_error_header_value {
if x_error == "unauthorized" {
return Redirect::to("/login").into_response();
}
}
response
}
StatusCode::BAD_REQUEST => {
if let Some(x_error) = x_error_header_value {
if x_error == "invalid schema"
|| x_error == "invalid header"
|| x_error == "introspection error"
{
return Redirect::to("/login").into_response();
}
}
response
}
StatusCode::FORBIDDEN => {
if let Some(x_error) = x_error_header_value {
if x_error == "user is inactive" {
return Redirect::to("/login").into_response();
}
}
response
}
StatusCode::NOT_FOUND => {
if let Some(x_error) = x_error_header_value {
if x_error == "user was not found" {
return Redirect::to("/login").into_response();
}
}
response
}
StatusCode::INTERNAL_SERVER_ERROR => {
if let Some(x_error) = x_error_header_value {
if x_error == "missing config" {
return Redirect::to("/login").into_response();
}
}
response
}
_ => response,
}
}

325
src/lib.rs
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@@ -1,38 +1,43 @@
//! # axum-tower-sessions-edge
//!
//! A Rust library that validates incoming requests for defined routes and forwards traffic
//! to the service defined as `PROXY_TARGET`. It's designed to work with Cloudflare Workers
//! and targets the `wasm32-unknown-unknown` platform.
//!
//! ## Features
//!
//! - OAuth 2.0 authentication flow
//! - Proof Key for Code Exchange (PKCE) for enhanced security
//! - OAuth 2.0 Token Introspection for token validation
//! - Session management with tower-sessions
//! - Cloudflare Workers integration
//!
//! See the [docs](crate::docs) module for comprehensive documentation.
mod api;
mod axum_introspector;
mod config;
mod credentials;
mod docs;
mod error;
mod oidc;
mod router;
mod session;
mod session_storage;
mod utilities;
mod zitadel_http;
use crate::api::authenticated::AuthenticatedApi;
use crate::api::public::PublicApi;
use crate::axum_introspector::introspection::{
IntrospectedUser, IntrospectionState, IntrospectionStateBuilder,
};
use axum::handler::Handler;
use crate::axum_introspector::introspection::IntrospectionStateBuilder;
use crate::config::{Config, KV_STORAGE_BINDING};
use crate::oidc::introspection::cache::cloudflare::CloudflareIntrospectionCache;
use crate::router::{create_router, AppState};
use crate::session::{create_session_layer, SessionConfig};
use crate::session_storage::cloudflare::CloudflareKvStore;
use axum::extract::FromRef;
use axum::response::{IntoResponse, Redirect};
use axum::routing::{any, get};
use axum::{Router, ServiceExt};
use bytes::Bytes;
use http::HeaderName;
use serde::{Deserialize, Serialize};
use serde_json::to_string;
use std::fmt::Debug;
use std::iter::once;
use std::ops::Deref;
use tower::ServiceExt as TowerServiceExt;
use tower::ServiceExt;
use tower_cookies::cookie::SameSite;
use tower_cookies::CookieManagerLayer;
use tower_http::cors::CorsLayer;
use tower_http::propagate_header::PropagateHeaderLayer;
use tower_http::sensitive_headers::SetSensitiveRequestHeadersLayer;
use tower_service::Service;
use tower_sessions::cookie::Key;
use tower_sessions::SessionManagerLayer;
use tower_sessions_core::Expiry;
use tracing::instrument::WithSubscriber;
use tracing_subscriber::prelude::*;
@@ -54,227 +59,105 @@ fn start() {
.init()
}
const SIGNING_KEY: &str = "keystore::sig";
const ENCRYPTION_KEY: &str = "keystore::enc";
// main entrypoint
#[event(fetch)]
async fn fetch(
req: HttpRequest,
_env: Env,
_ctx: Context,
) -> Result<axum::http::Response<axum::body::Body>> {
console_error_panic_hook::set_once();
Ok(route(req, _env).await)
}
#[derive(Serialize, Deserialize, Clone, Debug)]
struct Callback {
code: String,
state: String,
}
#[derive(Clone)]
struct AppState {
introspection_state: IntrospectionState,
#[event(fetch)]
async fn fetch(
req: HttpRequest,
env: Env,
session_store: CloudflareKvStore,
}
impl FromRef<AppState> for IntrospectionState {
fn from_ref(input: &AppState) -> Self {
input.introspection_state.clone()
}
_ctx: Context,
) -> Result<axum::http::Response<axum::body::Body>> {
console_error_panic_hook::set_once();
Ok(route(req, env).await)
}
async fn route(req: HttpRequest, _env: Env) -> axum_core::response::Response {
let kv = _env.kv("KV_STORAGE").unwrap();
async fn route(req: HttpRequest, env: Env) -> axum::http::Response<axum::body::Body> {
// Load configuration from environment
let config = match Config::from_env(&env) {
Ok(config) => config,
Err(err) => {
console_error!("Configuration error: {}", err);
return axum::http::Response::builder()
.status(500)
.body(axum::body::Body::from("Internal Server Error: Configuration error"))
.unwrap();
}
};
// Initialize KV store
let kv = match env.kv(KV_STORAGE_BINDING) {
Ok(kv) => kv,
Err(err) => {
console_error!("KV store error: {}", err);
return axum::http::Response::builder()
.status(500)
.body(axum::body::Body::from("Internal Server Error: KV store error"))
.unwrap();
}
};
// Initialize introspection cache
let cache = CloudflareIntrospectionCache::new(kv.clone());
let introspection_state = IntrospectionStateBuilder::new(
_env.secret("AUTH_SERVER_URL")
.unwrap()
.to_string()
.as_str(),
)
.with_basic_auth(
_env.secret("CLIENT_ID")
.unwrap()
.to_string()
.as_str(),
_env.secret("CLIENT_SECRET")
.unwrap()
.to_string()
.as_str(),
)
.with_introspection_cache(cache)
.build()
.await
.unwrap();
// Build introspection state
let introspection_state = match IntrospectionStateBuilder::new(&config.auth_server_url)
.with_basic_auth(&config.client_id, &config.client_secret)
.with_introspection_cache(cache)
.build()
.await
{
Ok(state) => state,
Err(err) => {
console_error!("Introspection state error: {}", err);
return axum::http::Response::builder()
.status(500)
.body(axum::body::Body::from("Internal Server Error: Introspection state error"))
.unwrap();
}
};
// Initialize session store
let session_store = CloudflareKvStore::new(kv.clone());
// Create application state
let state = AppState {
introspection_state,
session_store: session_store.clone(),
env: _env.clone(),
env: env.clone(),
};
let dev_mode = _env.var("DEV_MODE").unwrap().to_string(); // Example check
let is_dev = dev_mode == "true";
let keystore = _env.kv("KV_STORAGE").unwrap();
let signing = if let Some(bytes) = keystore.get(SIGNING_KEY).bytes().await.unwrap() {
Key::derive_from(bytes.as_slice())
} else {
let key = Key::generate();
keystore
.put_bytes(SIGNING_KEY, key.master())
.unwrap()
.execute()
.await
.unwrap();
key
// Create session configuration
let session_config = SessionConfig {
cookie_name: "session".to_string(),
expiry: Expiry::OnSessionEnd,
domain: "localhost".to_string(), // Will be overridden in create_session_layer
path: "/".to_string(),
secure: !config.dev_mode,
same_site: SameSite::Lax,
};
let encryption = if let Some(bytes) = keystore.get(ENCRYPTION_KEY).bytes().await.unwrap() {
Key::derive_from(bytes.as_slice())
} else {
let key = Key::generate();
keystore
.put_bytes(ENCRYPTION_KEY, key.master())
.unwrap()
.execute()
.await
.unwrap();
key
};
// Create session layer
let session_layer = create_session_layer(
&config,
Some(session_config),
session_store,
kv,
).await;
let host_string = _env.secret("APP_URL").unwrap().to_string().as_str().to_owned();
// Create router
let router = create_router(state, session_layer);
let cookie_host_uri = host_string.parse::<http::Uri>().unwrap();
// Handle request
// Convert the worker request to an axum request
let axum_req = axum::extract::Request::try_from(req).unwrap();
let mut cookie_host = cookie_host_uri.authority().unwrap().to_string();
if cookie_host.starts_with("localhost:") {
cookie_host = "localhost".to_string();
}
let session_layer = SessionManagerLayer::new(state.session_store.clone())
.with_name("session")
.with_expiry(Expiry::OnSessionEnd)
.with_domain(cookie_host)
.with_same_site(SameSite::Lax)
.with_signed(signing)
.with_private(encryption)
.with_path("/")
.with_secure(!is_dev)
.with_always_save(false);
async fn handle_introspection_errors(
mut response: axum_core::response::Response,
) -> axum_core::response::Response {
let x_error_header_value = response
.headers()
.get("x-introspection-error")
.and_then(|header_value| header_value.to_str().ok());
// not used but is available
let x_session_header_value = response
.headers()
.get("x-session")
.and_then(|header_value| header_value.to_str().ok());
match response.status() {
http::StatusCode::UNAUTHORIZED => {
if let Some(x_error) = x_error_header_value {
if x_error == "unauthorized" {
return Redirect::to("/login").into_response();
}
}
response
}
http::StatusCode::BAD_REQUEST => {
if let Some(x_error) = x_error_header_value {
if x_error == "invalid schema"
|| x_error == "invalid header"
|| x_error == "introspection error"
{
return Redirect::to("/login").into_response();
}
}
response
}
http::StatusCode::FORBIDDEN => {
if let Some(x_error) = x_error_header_value {
if x_error == "user is inactive" {
return Redirect::to("/login").into_response();
}
}
response
}
http::StatusCode::NOT_FOUND => {
if let Some(x_error) = x_error_header_value {
if x_error == "user was not found" {
return Redirect::to("/login").into_response();
}
}
response
}
http::StatusCode::INTERNAL_SERVER_ERROR => {
if let Some(x_error) = x_error_header_value {
if x_error == "missing config" {
return Redirect::to("/login").into_response();
}
}
response
}
_ => response,
}
}
let mut router = Router::new()
.route("/", any(AuthenticatedApi::proxy))
.route("/login", get(PublicApi::login_page)) // Add the login page route
.route("/login/callback", get(PublicApi::callback))
.route("/login/authorize", get(PublicApi::authorize))
.route("/api/whoami", get(whoami))
.route("/*path", any(AuthenticatedApi::proxy))
.layer(PropagateHeaderLayer::new(HeaderName::from_static(
"x-request-id",
)))
.layer(axum::middleware::map_response(handle_introspection_errors))
.with_state(state)
.layer(session_layer)
.layer(CookieManagerLayer::new())
.layer(CorsLayer::very_permissive())
.layer(SetSensitiveRequestHeadersLayer::new(once(
http::header::AUTHORIZATION,
)));
router
.as_service()
.ready()
.await
.unwrap()
.oneshot(req)
.await
.unwrap()
}
async fn whoami(
session: tower_sessions::Session,
introspected_user: IntrospectedUser,
) -> impl IntoResponse {
console_log!("calling whoami");
to_string(&introspected_user).unwrap()
}
impl FromRef<AppState> for CloudflareKvStore {
fn from_ref(input: &AppState) -> Self {
input.session_store.clone()
}
// Use the router to handle the request
// Since we've modified create_router to return a Router with empty state,
// we can now use the oneshot method directly
router.oneshot(axum_req).await.unwrap()
}

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@@ -0,0 +1,99 @@
//! Routing configuration for the application.
//!
//! This module provides centralized routing functionality,
//! including router configuration and middleware setup.
use crate::api::authenticated::AuthenticatedApi;
use crate::api::public::PublicApi;
use crate::error::handle_introspection_errors;
use worker::console_log;
use axum::extract::FromRef;
use axum::response::IntoResponse;
use axum::routing::{any, get};
use axum::{Router, ServiceExt};
use http::HeaderName;
use serde_json::to_string;
use std::iter::once;
use tower_cookies::CookieManagerLayer;
use tower_http::cors::CorsLayer;
use tower_http::propagate_header::PropagateHeaderLayer;
use tower_http::sensitive_headers::SetSensitiveRequestHeadersLayer;
use tower_sessions::SessionManagerLayer;
use crate::axum_introspector::introspection::{IntrospectedUser, IntrospectionState};
use crate::session_storage::cloudflare::CloudflareKvStore;
/// Application state shared across handlers
#[derive(Clone)]
pub struct AppState {
/// State for token introspection
pub introspection_state: IntrospectionState,
/// Cloudflare environment
pub env: worker::Env,
/// Session store
pub session_store: CloudflareKvStore,
}
impl FromRef<AppState> for IntrospectionState {
fn from_ref(input: &AppState) -> Self {
input.introspection_state.clone()
}
}
impl FromRef<AppState> for CloudflareKvStore {
fn from_ref(input: &AppState) -> Self {
input.session_store.clone()
}
}
/// Create a router with the given state and session layer
///
/// # Arguments
///
/// * `state` - The application state
/// * `session_layer` - The session manager layer
///
/// # Returns
///
/// A configured router
pub fn create_router(
state: AppState,
session_layer: SessionManagerLayer<CloudflareKvStore, tower_sessions::service::PrivateCookie>,
) -> Router {
Router::new()
.route("/", any(AuthenticatedApi::proxy))
.route("/login", get(PublicApi::login_page))
.route("/login/callback", get(PublicApi::callback))
.route("/login/authorize", get(PublicApi::authorize))
.route("/api/whoami", get(whoami))
.route("/*path", any(AuthenticatedApi::proxy))
.layer(PropagateHeaderLayer::new(HeaderName::from_static(
"x-request-id",
)))
.layer(axum::middleware::map_response(handle_introspection_errors))
.with_state(state)
.layer(session_layer)
.layer(CookieManagerLayer::new())
.layer(CorsLayer::very_permissive())
.layer(SetSensitiveRequestHeadersLayer::new(once(
http::header::AUTHORIZATION,
)))
}
/// Handler for the whoami endpoint
///
/// # Arguments
///
/// * `session` - The user's session
/// * `introspected_user` - The introspected user information
///
/// # Returns
///
/// The user information as JSON
pub async fn whoami(
session: tower_sessions::Session,
introspected_user: IntrospectedUser,
) -> impl IntoResponse {
console_log!("calling whoami");
to_string(&introspected_user).unwrap()
}

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@@ -0,0 +1,128 @@
//! Session management for the application.
//!
//! This module provides centralized session management functionality,
//! including session configuration and key management.
use crate::config::{Config, ENCRYPTION_KEY, SIGNING_KEY};
use crate::session_storage::cloudflare::CloudflareKvStore;
use tower_cookies::cookie::SameSite;
use tower_sessions::cookie::Key;
use tower_sessions::service::PrivateCookie;
use tower_sessions::SessionManagerLayer;
use tower_sessions_core::Expiry;
use worker::kv::KvStore as Kv;
/// Session configuration options
#[derive(Clone, Debug)]
pub struct SessionConfig {
/// The name of the session cookie
pub cookie_name: String,
/// The expiry policy for the session
pub expiry: Expiry,
/// The domain for the session cookie
pub domain: String,
/// The path for the session cookie
pub path: String,
/// Whether the session cookie should be secure
pub secure: bool,
/// The same-site policy for the session cookie
pub same_site: SameSite,
}
impl Default for SessionConfig {
fn default() -> Self {
Self {
cookie_name: "session".to_string(),
expiry: Expiry::OnSessionEnd,
domain: "localhost".to_string(),
path: "/".to_string(),
secure: true,
same_site: SameSite::Lax,
}
}
}
/// Create a session manager layer with the given configuration
///
/// # Arguments
///
/// * `config` - The application configuration
/// * `session_config` - The session configuration
/// * `session_store` - The session store
/// * `keystore` - The KV store for key management
///
/// # Returns
///
/// A session manager layer
pub async fn create_session_layer(
config: &Config,
session_config: Option<SessionConfig>,
session_store: CloudflareKvStore,
keystore: Kv,
) -> SessionManagerLayer<CloudflareKvStore, PrivateCookie> {
let session_config = session_config.unwrap_or_default();
let (signing, encryption) = get_or_create_keys(keystore).await;
let mut domain = session_config.domain;
// Handle localhost special case
if let Ok(uri) = config.app_url.parse::<http::Uri>() {
if let Some(authority) = uri.authority() {
domain = authority.to_string();
if domain.starts_with("localhost:") {
domain = "localhost".to_string();
}
}
}
SessionManagerLayer::new(session_store)
.with_name(session_config.cookie_name)
.with_expiry(session_config.expiry)
.with_domain(domain)
.with_same_site(session_config.same_site)
.with_signed(signing)
.with_private(encryption)
.with_path(session_config.path)
.with_secure(!config.dev_mode)
.with_always_save(false)
}
/// Get or create signing and encryption keys
///
/// # Arguments
///
/// * `keystore` - The KV store for key management
///
/// # Returns
///
/// A tuple of (signing_key, encryption_key)
async fn get_or_create_keys(keystore: Kv) -> (Key, Key) {
let signing = if let Some(bytes) = keystore.get(SIGNING_KEY).bytes().await.unwrap() {
Key::derive_from(bytes.as_slice())
} else {
let key = Key::generate();
keystore
.put_bytes(SIGNING_KEY, key.master())
.unwrap()
.execute()
.await
.unwrap();
key
};
let encryption = if let Some(bytes) = keystore.get(ENCRYPTION_KEY).bytes().await.unwrap() {
Key::derive_from(bytes.as_slice())
} else {
let key = Key::generate();
keystore
.put_bytes(ENCRYPTION_KEY, key.master())
.unwrap()
.execute()
.await
.unwrap();
key
};
(signing, encryption)
}