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Adding auto OpenSSL ACME Let's Encrypt example. (#523)

Browse Source 
Co-authored-by: Lajto Mekadimon <85128868+lajtomekadimon@users.noreply.github.com>
This commit is contained in:
Rob Ede 2022-02-06 16:31:44 +00:00 committed by GitHub
parent af73a0c7ab
commit 0b74135fb0
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6 changed files with 357 additions and 8 deletions
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15
.github/workflows/clippy-fmt.yml vendored
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@ -50,13 +50,14 @@ jobs:
components: clippy
override: true
- name: create test db for sqlx
run: |
sudo apt-get update && sudo apt-get install sqlite3
cd database_interactions/sqlx_todo
cp .env.example .env
cat schema.sql | sqlite3 test.db
chmod a+rwx test.db
# - name: Create test DBs
# run: |
# sudo apt-get update && sudo apt-get install sqlite3
# cargo install sqlx-cli --no-default-features --features=rustls,sqlite
# cd basics/todo
# DATABASE_URL="sqlite://./todo.db" sqlx database create
# chmod a+rwx todo.db
# DATABASE_URL="sqlite://./todo.db" sqlx migrate run
- name: clippy
uses: actions-rs/clippy-check@v1

130
Cargo.lock generated
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@ -12,6 +12,23 @@ dependencies = [
"regex",
]
[[package]]
name = "acme-micro"
version = "0.12.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "a18fb402a32ddc56ef7015df8d575c326ea911887ba9b7661ce18786282e89a3"
dependencies = [
"anyhow",
"base64 0.13.0",
"lazy_static",
"log",
"openssl",
"serde 1.0.136",
"serde_json",
"time 0.1.43",
"ureq",
]
[[package]]
name = "actix"
version = "0.10.0"
@ -1750,6 +1767,12 @@ dependencies = [
"phf_codegen 0.10.0",
]
[[package]]
name = "chunked_transfer"
version = "1.4.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "fff857943da45f546682664a79488be82e69e43c1a7a2307679ab9afb3a66d2e"
[[package]]
name = "cipher"
version = "0.2.5"
@ -1934,6 +1957,22 @@ dependencies = [
"log",
]
[[package]]
name = "cookie_store"
version = "0.12.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "3818dfca4b0cb5211a659bbcbb94225b7127407b2b135e650d717bfb78ab10d3"
dependencies = [
"cookie 0.14.4",
"idna",
"log",
"publicsuffix",
"serde 1.0.136",
"serde_json",
"time 0.2.27",
"url",
]
[[package]]
name = "copyless"
version = "0.1.5"
@ -4110,6 +4149,21 @@ dependencies = [
"openssl-sys",
]
[[package]]
name = "openssl-auto-le"
version = "1.0.0"
dependencies = [
"acme-micro",
"actix-files 0.6.0-beta.16",
"actix-web 4.0.0-rc.2",
"anyhow",
"env_logger 0.9.0",
"futures-util",
"log",
"openssl",
"reqwest 0.11.9",
]
[[package]]
name = "openssl-example"
version = "1.0.0"
@ -4564,6 +4618,25 @@ dependencies = [
"prost-derive",
]
[[package]]
name = "publicsuffix"
version = "1.5.6"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "95b4ce31ff0a27d93c8de1849cf58162283752f065a90d508f1105fa6c9a213f"
dependencies = [
"idna",
"url",
]
[[package]]
name = "qstring"
version = "0.7.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "d464fae65fff2680baf48019211ce37aaec0c78e9264c84a3e484717f965104e"
dependencies = [
"percent-encoding",
]
[[package]]
name = "quick-error"
version = "1.2.3"
@ -4865,6 +4938,42 @@ dependencies = [
"winreg 0.7.0",
]
[[package]]
name = "reqwest"
version = "0.11.9"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "87f242f1488a539a79bac6dbe7c8609ae43b7914b7736210f239a37cccb32525"
dependencies = [
"base64 0.13.0",
"bytes 1.1.0",
"encoding_rs",
"futures-core",
"futures-util",
"h2 0.3.11",
"http",
"http-body 0.4.4",
"hyper 0.14.16",
"hyper-tls 0.5.0",
"ipnet",
"js-sys",
"lazy_static",
"log",
"mime",
"native-tls",
"percent-encoding",
"pin-project-lite 0.2.8",
"serde 1.0.136",
"serde_json",
"serde_urlencoded",
"tokio 1.16.1",
"tokio-native-tls",
"url",
"wasm-bindgen",
"wasm-bindgen-futures",
"web-sys",
"winreg 0.7.0",
]
[[package]]
name = "resolv-conf"
version = "0.7.0"
@ -5564,7 +5673,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ba54017cf417e62d64260167de6b8d578f99a248225d3f9fd3396db1ab9e7fbc"
dependencies = [
"chrono",
"reqwest",
"reqwest 0.10.10",
"serde 1.0.136",
"serde_derive",
"serde_json",
@ -6627,6 +6736,25 @@ version = "0.7.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "a156c684c91ea7d62626509bce3cb4e1d9ed5c4d978f7b4352658f96a4c26b4a"
[[package]]
name = "ureq"
version = "1.5.5"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "2b8b063c2d59218ae09f22b53c42eaad0d53516457905f5235ca4bc9e99daa71"
dependencies = [
"base64 0.13.0",
"chunked_transfer",
"cookie 0.14.4",
"cookie_store",
"log",
"once_cell",
"qstring",
"rustls 0.19.1",
"url",
"webpki 0.21.4",
"webpki-roots 0.21.1",
]
[[package]]
name = "url"
version = "2.2.2"

1
Cargo.toml
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@ -39,6 +39,7 @@ members = [
"security/awc_https",
"security/casbin",
"security/openssl",
"security/openssl-auto-le",
"security/rustls-client-cert",
"security/rustls",
"security/web-cors/backend",

16
security/openssl-auto-le/Cargo.toml Normal file
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@ -0,0 +1,16 @@
[package]
name = "openssl-auto-le"
version = "1.0.0"
edition = "2021"
[dependencies]
actix-web = { version = "4.0.0-rc.2", features = ["openssl"] }
actix-files = "0.6.0-beta.16"
acme-micro = "0.12"
anyhow = "1"
env_logger = "0.9"
futures-util = { version = "0.3.7", default-features = false, features = ["std"] }
log = "0.4"
openssl = { version = "0.10", features = ["v110"] }
reqwest = "0.11"

5
security/openssl-auto-le/README.md Normal file
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@ -0,0 +1,5 @@
# Automatic Let's Encrypt TLS/SSL (via OpenSSL)
We use (acme-micro)[https://github.com/kpcyrd/acme-micro] to auto-generate TLS/SSL certificates via OpenSSL for a given domain.
Process is explained in code.

198
security/openssl-auto-le/src/main.rs Normal file
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@ -0,0 +1,198 @@
use std::{fs, time::Duration};
use acme_micro::{create_p384_key, Certificate, Directory, DirectoryUrl};
use actix_files::Files;
use actix_web::{rt, web, App, HttpRequest, HttpServer, Responder};
use anyhow::anyhow;
use openssl::{
pkey::PKey,
ssl::{SslAcceptor, SslMethod},
x509::X509,
};
pub async fn gen_tls_cert(
user_email: &str,
user_domain: &str,
) -> anyhow::Result<Certificate> {
// Create acme-challenge dir.
fs::create_dir("./acme-challenge").unwrap();
let domain = user_domain.to_string();
// Create temporary Actix Web server for ACME challenge.
let srv = HttpServer::new(|| {
App::new().service(
Files::new(
// HTTP route
"/.well-known/acme-challenge",
// Server's dir
"acme-challenge",
)
.show_files_listing(),
)
})
.bind((domain, 80))?
.shutdown_timeout(0)
.run();
let srv_handle = srv.handle();
let srv_task = rt::spawn(srv);
// Use DirectoryUrl::LetsEncryptStaging for dev/testing.
let url = DirectoryUrl::LetsEncrypt;
// Create a directory entrypoint.
let dir = Directory::from_url(url)?;
// Our contact addresses; note the `mailto:`
let user_email_mailto: String = "mailto:{email}".replace("{email}", user_email);
let contact = vec![user_email_mailto];
// Generate a private key and register an account with our ACME provider.
// We should write it to disk any use `load_account` afterwards.
let acc = dir.register_account(contact.clone())?;
// Load an account from string
let privkey = acc.acme_private_key_pem()?;
let acc = dir.load_account(&privkey, contact)?;
// Order a new TLS certificate for the domain.
let mut ord_new = acc.new_order(user_domain, &[])?;
// If the ownership of the domain have already been
// authorized in a previous order, we might be able to
// skip validation. The ACME API provider decides.
let ord_csr = loop {
// Are we done?
if let Some(ord_csr) = ord_new.confirm_validations() {
break ord_csr;
}
// Get the possible authorizations (for a single domain
// this will only be one element).
let auths = ord_new.authorizations()?;
// For HTTP, the challenge is a text file that needs to
// be placed in our web server's root:
//
// <mydomain>/acme-challenge/<token>
//
// The important thing is that it's accessible over the
// web for the domain we are trying to get a
// certificate for:
//
// http://mydomain.io/.well-known/acme-challenge/<token>
let chall = auths[0]
.http_challenge()
.ok_or(anyhow!("no HTTP challenge accessible"))?;
// The token is the filename.
let token = chall.http_token();
// The proof is the contents of the file
let proof = chall.http_proof()?;
// Place the file/contents in the correct place.
let path = format!("acme-challenge/{}", token);
fs::write(&path, &proof)?;
// After the file is accessible from the web, the calls
// this to tell the ACME API to start checking the
// existence of the proof.
//
// The order at ACME will change status to either
// confirm ownership of the domain, or fail due to the
// not finding the proof. To see the change, we poll
// the API with 5000 milliseconds wait between.
chall.validate(Duration::from_millis(5000))?;
// Update the state against the ACME API.
ord_new.refresh()?;
};
// Ownership is proven. Create a private key for
// the certificate. These are provided for convenience; we
// could provide our own keypair instead if we want.
let pkey_pri = create_p384_key()?;
// Submit the CSR. This causes the ACME provider to enter a
// state of "processing" that must be polled until the
// certificate is either issued or rejected. Again we poll
// for the status change.
let ord_cert = ord_csr.finalize_pkey(pkey_pri, Duration::from_millis(5000))?;
// Now download the certificate. Also stores the cert in
// the persistence.
let cert = ord_cert.download_cert()?;
// Stop temporary server for ACME challenge
srv_handle.stop(true).await;
srv_task.await??;
// Delete acme-challenge dir
fs::remove_dir_all("./acme-challenge")?;
Ok(cert)
}
// "Hello world" example
async fn index(_req: HttpRequest) -> impl Responder {
"Hello world!"
}
#[actix_web::main]
async fn main() -> anyhow::Result<()> {
env_logger::init_from_env(env_logger::Env::new().default_filter_or("info"));
// IMPORTANT: Use your own email and domain!
let email = "example@example.com";
let domain = "mydomain.io";
// Load keys
// ==============================================
// = IMPORTANT: =
// = This process has to be repeated =
// = before the certificate expires (< 90 days) =
// ==============================================
// Obtain TLS certificate
let cert = gen_tls_cert(email, domain).await?;
let mut ssl_builder = SslAcceptor::mozilla_intermediate(SslMethod::tls())?;
// Get and add private key
let pkey_der = PKey::private_key_from_der(&cert.private_key_der()?)?;
ssl_builder.set_private_key(&pkey_der)?;
// Get and add certificate
let cert_der = X509::from_der(&cert.certificate_der()?)?;
ssl_builder.set_certificate(&cert_der)?;
// Get and add intermediate certificate to the chain
let icert_url = "https://letsencrypt.org/certs/lets-encrypt-r3.der";
let icert_bytes = reqwest::get(icert_url).await?.bytes().await?;
let intermediate_cert = X509::from_der(&icert_bytes)?;
ssl_builder.add_extra_chain_cert(intermediate_cert)?;
// NOTE:
// Storing pkey_der, cert_der and intermediate_cert somewhere
// (in order to avoid unnecessarily regeneration of TLS/SSL) is recommended
log::info!("starting HTTP server at http://localhost:443");
// Start HTTP server!
let srv = HttpServer::new(|| App::new().route("/", web::get().to(index)))
.bind_openssl((domain, 443), ssl_builder)?
.run();
let srv_handle = srv.handle();
let _auto_shutdown_task = rt::spawn(async move {
// Shutdown server every 4 weeks so that TLS certs can be regenerated if needed.
// This is only appropriate in contexts like Kubernetes which can orchestrate restarts.
rt::time::sleep(Duration::from_secs(60 * 60 * 24 * 28)).await;
srv_handle.stop(true).await;
});
srv.await?;
Ok(())
}