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|
use super::*;
use crate::clients::parse_basic_auth;
use crate::config::Config;
use crate::database::DbAuditLog;
use crate::keys::KeyManager;
use crate::oauth::types::Claims;
use crate::repositories::{AuditRepository, ClientRepository, RateRepository};
use anyhow::{Result, anyhow};
use chrono::Utc;
use jsonwebtoken::{Algorithm, Header, encode};
use std::collections::HashMap;
use std::sync::{Arc, Mutex};
use std::time::{SystemTime, UNIX_EPOCH};
use uuid::Uuid;
/// Default implementation of ClientAuthenticator
pub struct DefaultClientAuthenticator {
client_repository: Arc<dyn ClientRepository>,
}
impl DefaultClientAuthenticator {
pub fn new(client_repository: Arc<dyn ClientRepository>) -> Self {
Self { client_repository }
}
fn authenticate_client(&self, client_id: &str, client_secret: &str) -> bool {
match self.client_repository.get_client(client_id) {
Ok(Some(client)) => {
// Use constant-time comparison to prevent timing attacks
use subtle::ConstantTimeEq;
let expected_hash = client.client_secret_hash.as_bytes();
let provided_hash = self.hash_client_secret(client_secret);
expected_hash.ct_eq(provided_hash.as_bytes()).into()
}
_ => false,
}
}
fn hash_client_secret(&self, secret: &str) -> String {
use sha2::{Digest, Sha256};
let mut hasher = Sha256::new();
hasher.update(secret.as_bytes());
format!("{:x}", hasher.finalize())
}
}
impl ClientAuthenticator for DefaultClientAuthenticator {
fn authenticate(
&self,
params: &HashMap<String, String>,
auth_header: Option<&str>,
) -> Result<(String, String), String> {
if let Some(auth_header) = auth_header {
// HTTP Basic Authentication (preferred method)
parse_basic_auth(auth_header).ok_or_else(|| "Invalid Authorization header".to_string())
} else {
// Form-based authentication (fallback)
let client_id = params
.get("client_id")
.ok_or_else(|| "Missing client_id".to_string())?;
let client_secret = params
.get("client_secret")
.ok_or_else(|| "Missing client_secret".to_string())?;
if !self.authenticate_client(client_id, client_secret) {
return Err("Invalid client credentials".to_string());
}
Ok((client_id.clone(), client_secret.clone()))
}
}
}
/// Default implementation of RateLimiter
pub struct DefaultRateLimiter {
rate_repository: Arc<dyn RateRepository>,
config: Config,
}
impl DefaultRateLimiter {
pub fn new(rate_repository: Arc<dyn RateRepository>, config: Config) -> Self {
Self {
rate_repository,
config,
}
}
}
impl RateLimiter for DefaultRateLimiter {
fn check_rate_limit(&self, identifier: &str, endpoint: &str) -> Result<()> {
let count = self
.rate_repository
.increment_rate_limit(identifier, endpoint, 1)?;
if count > self.config.rate_limit_requests_per_minute as i32 {
return Err(anyhow!("Rate limit exceeded"));
}
Ok(())
}
}
/// Default implementation of AuditLogger
pub struct DefaultAuditLogger {
audit_repository: Arc<dyn AuditRepository>,
config: Config,
}
impl DefaultAuditLogger {
pub fn new(audit_repository: Arc<dyn AuditRepository>, config: Config) -> Self {
Self {
audit_repository,
config,
}
}
}
impl AuditLogger for DefaultAuditLogger {
fn log_event(
&self,
event_type: &str,
client_id: Option<&str>,
user_id: Option<&str>,
ip_address: Option<&str>,
success: bool,
details: Option<&str>,
) -> Result<()> {
if !self.config.enable_audit_logging {
return Ok(());
}
let log = DbAuditLog {
id: 0,
event_type: event_type.to_string(),
client_id: client_id.map(|s| s.to_string()),
user_id: user_id.map(|s| s.to_string()),
ip_address: ip_address.map(|s| s.to_string()),
user_agent: None, // Could be passed in from HTTP layer
details: details.map(|s| s.to_string()),
created_at: Utc::now(),
success,
};
self.audit_repository.create_audit_log(&log)?;
Ok(())
}
}
/// Default implementation of TokenGenerator
pub struct DefaultTokenGenerator {
key_manager: Arc<Mutex<KeyManager>>,
config: Config,
}
impl DefaultTokenGenerator {
pub fn new(key_manager: Arc<Mutex<KeyManager>>, config: Config) -> Self {
Self {
key_manager,
config,
}
}
}
impl TokenGenerator for DefaultTokenGenerator {
fn generate_access_token(
&self,
user_id: &str,
client_id: &str,
scope: &Option<String>,
token_id: &str,
) -> Result<String, String> {
let mut key_manager = self.key_manager.lock().unwrap();
// Check if we need to rotate keys
if key_manager.should_rotate() {
if let Err(_) = key_manager.rotate_keys() {
return Err("Key rotation failed".to_string());
}
}
let current_key = key_manager
.get_current_key()
.ok_or_else(|| "No signing key available".to_string())?;
let now = SystemTime::now()
.duration_since(UNIX_EPOCH)
.unwrap()
.as_secs();
let claims = Claims {
sub: user_id.to_string(),
iss: self.config.issuer_url.clone(),
aud: client_id.to_string(),
exp: now + 3600,
iat: now,
scope: scope.clone(),
jti: Some(token_id.to_string()),
};
let mut header = Header::new(Algorithm::RS256);
header.kid = Some(current_key.kid.clone());
encode(&header, &claims, ¤t_key.encoding_key)
.map_err(|_| "Failed to generate token".to_string())
}
fn generate_refresh_token(
&self,
_client_id: &str,
_user_id: &str,
_scope: &Option<String>,
) -> Result<String, String> {
// For now, return a simple UUID-based refresh token
// In production, this should be a proper JWT or encrypted token
Ok(Uuid::new_v4().to_string())
}
}
|
