random progress

Cargo.toml

@@ -7,7 +7,49 @@ license = "EUPL-1.2"
 readme = "README.md"
 keywords = ["sso", "oidc", "oauth", "oauth2"]
 edition = "2021"
-rust-version = "1.64"
+rust-version = "1.65"
 exclude = ["doc/", "example/"]
 
+[badges]
+maintenance = { status = "actively-developed" }
+
 [dependencies]
+anyhow = "1.0.66"
+argon2 = { version = "0.4.1", features = ["std"] }
+axum = { version = "0.6.1", features = ["http2"] }
+axum-extra = { version = "0.4.2", features = ["cookie"] }
+base16ct = "0.1.1"
+base64ct = "1.5.3"
+blake2 = "0.10.5"
+chacha20poly1305 = { version = "0.10.1", features = ["std"] }
+clap = { version = "4.0.29", features = ["derive"] }
+password-hash = "0.4.2"
+rand = { version = "0.8.5", default-features = false, features = ["getrandom"] }
+rsa = "0.7.2"
+rusqlite = { version = "0.28.0", features = ["serde_json", "time", "uuid"] }
+rustls = "0.20.7"
+secrecy = { version = "0.8.0", features = ["serde"] }
+serde = { version = "1.0.148", features = ["derive"] }
+serde_json = "1.0.89"
+sha2 = { version = "0.10.6", features = ["oid"] }
+subtle = "2.4.1"    
+tokio = { version = "1.22.0", features = ["rt-multi-thread", "fs", "io-util", "io-std", "macros", "net", "signal", "sync", "time"] }
+toml = "0.5.9"
+tracing = "0.1.37"
+tracing-subscriber = { version = "0.3.16", features = ["json"] }
+uuid = { version = "1.2.2", features = ["v4"] }
+zeroize = { version = "1.5.7", features = ["std", "derive"] }
+
+[profile.release]
+codegen-units = 1
+incremental = false
+lto = "fat"
+panic = "abort"
+strip = "debuginfo"
+
+[profile.smaller]
+inherits = "release"
+opt-level = "s"
+
+[features]
+bundled = ["rusqlite/bundled"]

README.md

@@ -1,6 +1,6 @@
 # ChibiAuth
 
-Naive OpenID Provider.
+Naive IAM server.
 
 ## Development
 

example/config.toml

@@ -0,0 +1,13 @@
+[server]
+host = "127.0.0.1"
+port = 9909
+database = "example/database.db"
+base-url = "https://example.com"
+
+[server.tls]
+offload = false
+certificate = "example/cert.pem"
+private-key = "example/priv.pem"
+
+[server.mtls]
+enabled = false

schema.sql

@@ -0,0 +1,59 @@
+/* API Tokens */
+CREATE TABLE IF NOT EXISTS api_token
+    ( selector    TEXT PRIMARY KEY
+    , verifier    BLOB NOT NULL
+    , expiration  INTEGER NOT NULL /* TAI64N */
+    , description TEXT
+    ) STRICT;
+
+/* General User Management */
+CREATE TABLE IF NOT EXISTS users
+    ( uuid     BLOB PRIMARY KEY
+    , username TEXT NOT NULL
+    , passhash TEXT NOT NULL
+    ) STRICT;
+
+CREATE TABLE IF NOT EXISTS pass_reset
+    ( selector   TEXT PRIMARY KEY
+    , verifier   BLOB NOT NULL
+    , expiration INTEGER NOT NULL
+    , uuid       BLOB NOT NULL REFERENCES users ON DELETE CASCADE
+    ) STRICT;
+
+/* OAuth & OIDC */
+CREATE TABLE IF NOT EXISTS oidc_rs256
+    ( kid       TEXT UNIQUE NOT NULL
+    , keyblob   BLOB NOT NULL
+    ) STRICT;
+
+CREATE TABLE IF NOT EXISTS oidc_hs256
+    ( kid       TEXT UNIQUE NOT NULL
+    , keyblob   BLOB NOT NULL
+    ) STRICT;
+
+CREATE TABLE IF NOT EXISTS oidc_generation
+    ( tokentype  TEXT NOT NULL
+    , not_before INTEGER NOT NULL
+    ) STRICT;
+
+CREATE TABLE IF NOT EXISTS oidc_clients
+    ( uuid BLOB  PRIMARY KEY
+    , name TEXT NOT NULL
+    , subdomains TEXT NOT NULL
+    , kid        TEXT NOT NULL
+    , is_secret  INTEGER NOT NULL
+    ) STRICT;
+
+CREATE TABLE IF NOT EXISTS oidc_session_tokens
+    ( tokenhash  BLOB PRIMARY KEY
+    , uuid       BLOB REFERENCES users ON DELETE CASCADE,
+    , generation INTEGER NOT NULL
+    , expiration INTEGER NOT NULL
+    ) STRICT;
+
+CREATE TABLE IF NOT EXISTS oidc_refresh_tokens
+    ( tokenhash  BLOB PRIMARY KEY
+    , uuid       BLOB REFERENCES users ON DELETE CASCADE
+    , generation INTEGER NOT NULL
+    , expiration INTEGER NOT NULL
+    ) STRICT;

src/auth.rs

@@ -0,0 +1,2 @@
+mod oidc;
+mod api;

src/auth/api.rs

@@ -0,0 +1,25 @@
+use anyhow::Result;
+use blake2::{Blake2b512, Blake2s256, Digest};
+use rand::rngs::OsRng;
+use rand::RngCore;
+use rusqlite::Connection;
+use secrecy::{ExposeSecret, Secret, SecretString};
+
+pub struct ApiKey {
+    selector: String,
+    verifier: String,
+}
+
+impl ApiKey {
+    pub fn new() -> Result<SecretString, ApiKey> {
+        let mut raw_key = [0u8; 32];
+
+        OsRng.try_fill_bytes(&mut key)?;
+
+        let key = base16ct::upper::encode_string(raw_key);
+
+        let mut h = Blake2b512::new();
+
+        h.update(b"");
+    }
+}

src/auth/oidc.rs

@@ -0,0 +1,43 @@
+//! OIDC
+//!
+//! # JWK
+//! Only `HS256` and `RS256` are supported.
+
+mod hs256;
+mod rs256;
+
+use std::collections::HashMap;
+
+use anyhow::Result;
+use base64ct::{Base64Url, Encoding};
+use rand::rngs::OsRng;
+use rand::RngCore;
+
+pub use hs256::Hs256;
+pub use rs256::Rs256;
+
+pub struct OidcAuthnRequest {
+    pub user: String,
+    pub pass: String,
+    pub redirect_uri: String,
+}
+
+pub struct OidcDiscovery {
+    pub jwks: String,
+}
+
+pub struct OidcKeyEngine {
+    discovery: OidcDiscovery,
+}
+
+/// Generates a 192-bit random key ID.
+#[inline(always)]
+fn generate_kid() -> Result<String> {
+    let mut kid_bytes = [0u8; 24];
+
+    OsRng.try_fill_bytes(&mut kid_bytes)?;
+
+    Ok(Base64Url::encode_string(&kid_bytes))
+}
+
+impl OidcDiscovery {}

src/auth/oidc/hs256.rs

@@ -0,0 +1,24 @@
+use anyhow::Result;
+use rand::rngs::OsRng;
+use rand::RngCore;
+use secrecy::Secret;
+
+use crate::auth::oidc::generate_kid;
+
+pub struct Hs256 {
+    kid: String,
+    key: Secret<[u8; 32]>,
+}
+
+impl Hs256 {
+    pub fn new() -> Result<Hs256> {
+        let mut key = [0u8; 32];
+
+        OsRng.try_fill_bytes(&mut key)?;
+
+        Ok(Hs256 {
+            kid: generate_kid()?,
+            key: Secret::new(key),
+        })
+    }
+}

src/auth/oidc/rs256.rs

@@ -0,0 +1,78 @@
+use anyhow::Result;
+use base64ct::{Base64Url, Encoding};
+use rand::rngs::OsRng;
+use rand::RngCore;
+use rsa::pkcs1v15::{SigningKey, VerifyingKey};
+use rsa::{PublicKeyParts, RsaPrivateKey, RsaPublicKey};
+use serde_json::json;
+use sha2::Sha256;
+
+use crate::auth::oidc::generate_kid;
+
+static RSA_BITS: usize = 2048;
+
+/// RSASSA-PKCS1v1.5 with SHA-2-256
+///
+/// Only 2048-bit keys are used.
+pub struct Rs256 {
+    kid: String,
+    signing_key: SigningKey<Sha256>,
+    verifying_key: VerifyingKey<Sha256>,
+}
+
+impl Rs256 {
+    pub fn new() -> Result<Rs256> {
+        let kid = generate_kid()?;
+
+        let p = RsaPrivateKey::new(&mut OsRng, RSA_BITS)?;
+
+        let signing_key = SigningKey::new_with_prefix(p);
+
+        let verifying_key = VerifyingKey::from(&signing_key);
+
+        Ok(Rs256 {
+            kid,
+            signing_key,
+            verifying_key,
+        })
+    }
+
+    fn discovery_key(&self) -> Result<serde_json::Value> {
+        let public_key: &RsaPublicKey = self.verifying_key.as_ref();
+
+        let n_bytes = public_key.n().to_bytes_be();
+
+        let n = Base64Url::encode_string(&n_bytes);
+
+        Ok(json!({
+            "alg": "RS256",
+            "kty": "RSA",
+            "kid": self.kid,
+            "e": "AQAB",
+            "n": n,
+        }))
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use rsa::{PublicKeyParts, RsaPublicKey};
+
+    use crate::auth::oidc::rs256::*;
+
+    // This can fail in two situations.
+    // 1. BigUint no longer uses the minimum bits required.
+    // 2. The `rsa` crate has changed its default exponent.
+    #[test]
+    fn rsa_default_exp_is_serialized_as_aqab() {
+        let private_key = RsaPrivateKey::new(&mut OsRng, RSA_BITS).unwrap();
+
+        let public_key = RsaPublicKey::from(&private_key);
+
+        let e_bytes = public_key.e().to_bytes_be();
+
+        let e_str = Base64Url::encode_string(&e_bytes);
+
+        assert_eq!(e_str, "AQAB");
+    }
+}

src/config.rs

@@ -0,0 +1,29 @@
+use std::path::PathBuf;
+
+use serde::Deserialize;
+
+#[derive(Deserialize)]
+pub struct Config {
+    server: ServerConfig,
+}
+
+#[derive(Deserialize)]
+pub struct ServerConfig {
+    host: String,
+    port: u32,
+
+    #[serde(rename = "base-url")]
+    base_url: String,
+
+    tls: TlsConfig,
+}
+
+#[derive(Deserialize)]
+pub struct TlsConfig {
+    offload: bool,
+
+    certificate: PathBuf,
+
+    #[serde(rename = "private-key")]
+    private_key: PathBuf,
+}

src/database.rs

@@ -0,0 +1,81 @@
+use std::convert::AsRef;
+use std::ops::{Deref, Drop};
+use std::option::Option;
+use std::path::Path;
+use std::sync::Arc;
+use std::vec::Vec;
+
+use anyhow::{bail, Result};
+use rusqlite::Connection;
+use tokio::sync::Mutex;
+
+static SCHEMA: &str = include_str!("../schema.sql");
+
+pub struct PooledConnection {
+    conn: Option<Connection>,
+    pool: Arc<Mutex<Vec<Connection>>>,
+}
+
+/// Naive databse pool.
+#[derive(Clone)]
+pub struct Database {
+    pool: Arc<Mutex<Vec<Connection>>>,
+}
+
+/// Requires WAL and sets up complementary settings.
+pub fn setup_sqlite_conn(path: &dyn AsRef<Path>) -> Result<Connection> {
+    let conn = Connection::open(path)?;
+
+    conn.pragma_update(None, "journal_mode", "wal")?;
+    conn.pragma_update(None, "synchronous", "normal")?;
+    conn.pragma_update(None, "busy_timeout", 5000)?;
+
+    conn.execute_batch(SCHEMA)?;
+
+    Ok(conn)
+}
+
+impl Deref for PooledConnection {
+    type Target = Connection;
+
+    fn deref(&self) -> &Self::Target {
+        self.conn.as_ref().unwrap()
+    }
+}
+
+impl Drop for PooledConnection {
+    fn drop(&mut self) {
+        let mut p = self.pool.blocking_lock();
+
+        p.push(self.conn.take().unwrap());
+    }
+}
+
+impl Database {
+    pub fn new(path: &dyn AsRef<Path>, capacity: usize) -> Result<Database> {
+        let mut v = Vec::new();
+
+        v.try_reserve_exact(capacity)?;
+
+        for _ in 0..capacity {
+            let c = setup_sqlite_conn(path)?;
+
+            v.push(c);
+        }
+
+        let pool = Arc::new(Mutex::new(v));
+
+        Ok(Database { pool })
+    }
+
+    pub async fn get(&mut self) -> Result<PooledConnection> {
+        let mut pool = self.pool.lock().await;
+
+        let conn = pool.pop();
+
+        Ok(PooledConnection {
+            conn,
+            pool: Arc::clone(&self.pool),
+        })
+    }
+}

src/main.rs

@@ -1,3 +1,119 @@
-fn main() {
+mod auth;
-    println!("Hello, world!");
+mod config;
+mod database;
+mod model;
+mod state;
+
+use std::path::PathBuf;
+
+use anyhow::Result;
+use clap::{Args, Parser, Subcommand};
+use tracing::{error, Level};
+
+#[derive(Parser)]
+struct Cli {
+    #[command(subcommand)]
+    command: Commands,
+}
+
+#[derive(Subcommand)]
+enum Commands {
+    /// Run the server
+    #[command(arg_required_else_help = true)]
+    Run {
+        /// Path to the configuration file
+        #[arg(short, long)]
+        config: PathBuf,
+
+        /// Emit logs as ND-JSON
+        #[arg(short, long)]
+        json: bool,
+
+        /// Repeat to increase verbosity up to 2 times
+        #[arg(short, long, action = clap::ArgAction::Count)]
+        verbose: u8,
+    },
+
+    #[command(arg_required_else_help = true)]
+    Keygen {
+        /// Path to the configuration file
+        #[arg(short, long)]
+        config: PathBuf,
+
+        #[arg(long)]
+        api: bool,
+
+        #[arg(long)]
+        encrypt: bool,
+
+        #[arg(long)]
+        oidc_rs256: bool,
+    },
+
+    #[command(arg_required_else_help = true)]
+    Gc {
+        /// Path to the configuration file
+        #[arg(short, long)]
+        config: PathBuf,
+    },
+
+    Revoke {
+        /// Path to the configuration file
+        #[arg(short, long)]
+        config: PathBuf,
+    },
+}
+
+fn setup_logging(use_json: bool, verbosity: u8) -> Result<()> {
+    let max_level = match verbosity {
+        0 => Level::INFO,
+        1 => Level::DEBUG,
+        2.. => Level::TRACE,
+    };
+
+    let fmt = tracing_subscriber::fmt().with_max_level(max_level);
+
+    if use_json {
+        let collector = fmt.json().finish();
+        tracing::subscriber::set_global_default(collector)?;
+    } else {
+        let collector = fmt.pretty().finish();
+        tracing::subscriber::set_global_default(collector)?;
+    }
+
+    std::panic::set_hook(Box::new(|panic| {
+        if let Some(location) = panic.location() {
+            error!(
+                message = %panic,
+                panic.file = location.file(),
+                panic.line = location.line(),
+                panic.column = location.column(),
+            );
+        } else {
+            error!(message = %panic);
+        }
+    }));
+
+    Ok(())
+}
+
+pub fn main() {
+    let args = Cli::parse();
+
+    match args.command {
+        Commands::Run {
+            config,
+            json,
+            verbose,
+        } => {
+            setup_logging(json, verbose);
+        }
+        Commands::Keygen {
+            config,
+            api,
+            encrypt,
+            oidc_rs256,
+        } => {}
+        _ => {}
+    }
 }

src/model.rs

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

src/model/user.rs

@@ -0,0 +1,64 @@
+use anyhow::Result;
+use argon2::password_hash::PasswordHash;
+use argon2::{Algorithm, Argon2, PasswordHasher, PasswordVerifier, Version};
+use password_hash::SaltString;
+use rand::rngs::OsRng;
+use secrecy::SecretString;
+use uuid::Uuid;
+
+// Parameters are from https://twitter.com/Sc00bzT/status/1557495201064558592
+static ARGON2_M: u32 = 256;
+static ARGON2_T: u32 = 8;
+static ARGON2_P: u32 = 1;
+static ARGON2_OUTPUT_LEN: Option<usize> = Some(32);
+
+pub struct User {
+    uuid: Uuid,
+    username: String,
+    secrethash: String,
+}
+
+#[inline(always)]
+fn get_passphrase_kdf<'a>() -> Result<Argon2<'a>> {
+    let params = argon2::Params::new(256, 8, 1, Some(32))?;
+
+    let kdf = Argon2::new(Algorithm::Argon2id, Version::V0x13, params);
+
+    Ok(kdf)
+}
+
+impl User {
+    pub fn new(username: String, secret: &[u8]) -> Result<User> {
+        let params = argon2::Params::new(ARGON2_M, ARGON2_T, ARGON2_P, ARGON2_OUTPUT_LEN)?;
+        let kdf = Argon2::new(Algorithm::Argon2id, Version::V0x13, params);
+
+        let salt = SaltString::generate(&mut OsRng);
+
+        let secrethash = kdf.hash_password(secret, &salt)?.to_string();
+
+        Ok(User {
+            uuid: Uuid::new_v4(),
+            username,
+            secrethash,
+        })
+    }
+
+    pub fn regenerate_id(self) -> User {
+        User {
+            uuid: Uuid::new_v4(),
+            username: self.username,
+            secrethash: self.secrethash,
+        }
+    }
+
+    pub fn verify(self, pass: &[u8]) -> Result<bool> {
+        let kdf = get_passphrase_kdf()?;
+
+        let parsed_hash = PasswordHash::new(&self.secrethash)?;
+
+        match kdf.verify_password(pass, &parsed_hash) {
+            Ok(_) => Ok(true),
+            Err(_) => Ok(false),
+        }
+    }
+}

src/state.rs

@@ -0,0 +1,14 @@
+use axum::extract::FromRef;
+
+use crate::database::Database;
+
+// clone if cloneable
+pub struct AppState {
+    database: Database,
+}
+
+impl FromRef<AppState> for Database {
+    fn from_ref(state: &AppState) -> Database {
+        state.database.clone()
+    }
+}