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Public repository / af7028f8868d6e4af1ace94a8dcb2dc3d5d84d3f
AkurAI-IDP / src/routes/auth_pages.rs
Latest change 067df512e550e011fdb00cebb40754b0aa5429d9 - release: v0.1.1 by Ólafur Búi Ólafsson
use axum::{
Form, Router,
extract::Query,
http::{HeaderMap, StatusCode, header},
response::{Html, IntoResponse, Response},
routing::get,
};
use serde::Deserialize;
use std::time::{SystemTime, UNIX_EPOCH};
use crate::config;
use crate::db::with_db;
use crate::lib::audit::{
SESSION_CREATED, USER_LOCKED, USER_LOGIN, USER_LOGIN_FAILED, log_audit_event,
};
use crate::lib::crypto::{generate_secure_token, sha256};
use crate::lib::html::{Locale, auth_page, esc_html, t};
use crate::lib::password::verify_password;
use crate::lib::totp::verify_totp;
pub fn router() -> Router {
Router::new()
.route("/login", get(login_page).post(login_submit))
.route("/mfa", get(mfa_page).post(mfa_submit))
.route("/logout", get(logout).post(logout))
}
// ---------------------------------------------------------------------------
// Query / form structs
// ---------------------------------------------------------------------------
#[derive(Deserialize, Default)]
struct LoginQuery {
error: Option<String>,
return_to: Option<String>,
}
#[derive(Deserialize)]
struct LoginForm {
email: Option<String>,
password: Option<String>,
return_to: Option<String>,
_csrf: Option<String>,
}
#[derive(Deserialize)]
struct MfaForm {
code: Option<String>,
_csrf: Option<String>,
}
// ---------------------------------------------------------------------------
// GET /login
// ---------------------------------------------------------------------------
async fn login_page(Query(q): Query<LoginQuery>, headers: HeaderMap) -> impl IntoResponse {
let locale =
Locale::from_cookie_header(headers.get(header::COOKIE).and_then(|v| v.to_str().ok()));
let csrf = get_csrf_cookie(&headers).unwrap_or_default();
let return_to = q.return_to.as_deref().unwrap_or("");
let error_html = match &q.error {
Some(msg) => format!(r#"<div class="error">{}</div>"#, esc_html(msg)),
None => String::new(),
};
let lbl_email = t(locale, "Netfang", "Email");
let lbl_password = t(locale, "Lykilorð", "Password");
let lbl_submit = t(locale, "Skrá inn", "Sign in");
let page_title = t(locale, "Skrá inn", "Sign in");
let body = format!(
r#"{error_html}
<form method="post" action="/login">
<input type="hidden" name="_csrf" value="{csrf}">
<input type="hidden" name="return_to" value="{return_to}">
<label for="email">{lbl_email}</label>
<input type="email" id="email" name="email" required autofocus>
<label for="password">{lbl_password}</label>
<input type="password" id="password" name="password" required>
<button type="submit">{lbl_submit}</button>
</form>"#,
csrf = esc_html(&csrf),
return_to = esc_html(return_to),
lbl_email = lbl_email,
lbl_password = lbl_password,
lbl_submit = lbl_submit,
);
Html(auth_page(locale, page_title, &body))
}
// ---------------------------------------------------------------------------
// POST /login
// ---------------------------------------------------------------------------
async fn login_submit(headers: HeaderMap, Form(form): Form<LoginForm>) -> Response {
let email = form.email.as_deref().unwrap_or("").trim().to_lowercase();
let password = form.password.as_deref().unwrap_or("");
let return_to = safe_return_to(form.return_to.as_deref());
let ip = extract_ip(&headers);
if email.is_empty() || password.is_empty() {
return login_redirect("Email and password are required", &return_to);
}
// Global lookup across tenants (email not globally unique, but we pick first match)
let user = with_db(|conn| {
let mut stmt = conn
.prepare(
"SELECT id, tenant_id, password_hash, mfa_enabled,
locked_until, failed_attempts
FROM users WHERE LOWER(email) = ?1 LIMIT 1",
)
.ok()?;
stmt.query_row(rusqlite::params![email], |row| {
Ok(UserRow {
id: row.get(0)?,
tenant_id: row.get(1)?,
password_hash: row.get(2)?,
mfa_enabled: row.get::<_, i64>(3)? != 0,
locked_until: row.get(4)?,
failed_attempts: row.get::<_, i64>(5)?,
})
})
.ok()
});
let user = match user {
Some(u) => u,
None => {
// Don't reveal whether the user exists
return login_redirect("Invalid email or password", &return_to);
}
};
let now = now_epoch();
// Check lockout
if let Some(locked_until) = user.locked_until
&& locked_until > now
{
return login_redirect("Account temporarily locked. Try again later.", &return_to);
}
// Verify password
let pw_ok = verify_password(&user.password_hash, password).unwrap_or(false);
if !pw_ok {
let new_attempts = user.failed_attempts + 1;
with_db(|conn| {
if new_attempts >= 5 {
let lock_until = now + 15 * 60; // 15 minutes
conn.execute(
"UPDATE users SET failed_attempts = ?1, locked_until = ?2, updated_at = ?3 WHERE id = ?4",
rusqlite::params![new_attempts, lock_until, now, user.id],
)
.ok();
log_audit_event(
conn,
Some(&user.tenant_id),
Some(&user.id),
USER_LOCKED,
Some(&ip),
None,
);
} else {
conn.execute(
"UPDATE users SET failed_attempts = ?1, updated_at = ?2 WHERE id = ?3",
rusqlite::params![new_attempts, now, user.id],
)
.ok();
}
log_audit_event(
conn,
Some(&user.tenant_id),
Some(&user.id),
USER_LOGIN_FAILED,
Some(&ip),
None,
);
});
return login_redirect("Invalid email or password", &return_to);
}
// Password correct — reset failed attempts
with_db(|conn| {
conn.execute(
"UPDATE users SET failed_attempts = 0, locked_until = NULL, updated_at = ?1 WHERE id = ?2",
rusqlite::params![now, user.id],
)
.ok();
});
// MFA check
if user.mfa_enabled {
let token = generate_secure_token(32);
let cookie_val = format!("{}:{}", token, user.id);
let cookie = format!(
"idp_mfa_pending={cookie_val}; Path=/; HttpOnly; SameSite=Lax; Secure; Max-Age=300"
);
let redirect_url = format!("/mfa?return_to={}", urlencoded(&return_to));
return (
StatusCode::SEE_OTHER,
[
(header::LOCATION, redirect_url),
(header::SET_COOKIE, cookie),
],
)
.into_response();
}
// No MFA — create session directly
create_session_response(
&user.id,
&user.tenant_id,
&ip,
&extract_ua(&headers),
&return_to,
)
}
// ---------------------------------------------------------------------------
// GET /mfa
// ---------------------------------------------------------------------------
async fn mfa_page(Query(q): Query<LoginQuery>, headers: HeaderMap) -> impl IntoResponse {
let locale =
Locale::from_cookie_header(headers.get(header::COOKIE).and_then(|v| v.to_str().ok()));
let csrf = get_csrf_cookie(&headers).unwrap_or_default();
let error_html = match &q.error {
Some(msg) => format!(r#"<div class="error">{}</div>"#, esc_html(msg)),
None => String::new(),
};
let lbl_code = t(locale, "Auðkenniskóði", "Authentication code");
let lbl_hint = t(
locale,
"Sláðu inn 6 stafa auðkenniskóðann þinn eða varakóða.",
"Enter your 6-digit authenticator code or a backup code.",
);
let lbl_submit = t(locale, "Staðfesta", "Verify");
let page_title = t(locale, "Tvíþátta auðkenning", "Two-factor authentication");
let body = format!(
r#"{error_html}
<form method="post" action="/mfa">
<input type="hidden" name="_csrf" value="{csrf}">
<label for="code">{lbl_code}</label>
<input type="text" id="code" name="code" inputmode="numeric" pattern="[0-9]*" autocomplete="one-time-code" required autofocus>
<p class="hint">{lbl_hint}</p>
<button type="submit">{lbl_submit}</button>
</form>"#,
csrf = esc_html(&csrf),
lbl_code = lbl_code,
lbl_hint = lbl_hint,
lbl_submit = lbl_submit,
);
Html(auth_page(locale, page_title, &body))
}
// ---------------------------------------------------------------------------
// POST /mfa
// ---------------------------------------------------------------------------
async fn mfa_submit(headers: HeaderMap, Form(form): Form<MfaForm>) -> Response {
let code = form.code.as_deref().unwrap_or("").trim().to_string();
let ip = extract_ip(&headers);
// Read MFA pending cookie
let pending = match get_cookie(&headers, "idp_mfa_pending") {
Some(v) => v,
None => return login_redirect("MFA session expired. Please log in again.", ""),
};
// Format: {token}:{user_id}
let user_id = match pending.split_once(':').map(|(_, uid)| uid.to_string()) {
Some(uid) if !uid.is_empty() => uid,
_ => return login_redirect("Invalid MFA session.", ""),
};
// Load user
let user = with_db(|conn| {
let mut stmt = conn
.prepare("SELECT id, tenant_id, mfa_secret FROM users WHERE id = ?1")
.ok()?;
stmt.query_row(rusqlite::params![user_id], |row| {
Ok((
row.get::<_, String>(0)?,
row.get::<_, String>(1)?,
row.get::<_, Option<String>>(2)?,
))
})
.ok()
});
let (uid, tenant_id, mfa_secret) = match user {
Some(u) => u,
None => return login_redirect("Invalid MFA session.", ""),
};
let secret = match mfa_secret {
Some(s) if !s.is_empty() => s,
_ => return login_redirect("MFA not configured.", ""),
};
// Try TOTP first (±1 window configured in totp module)
let totp_ok = verify_totp(&secret, &code);
if !totp_ok {
// Try backup codes
let code_hash = sha256(&code);
let backup_ok = with_db(|conn| {
let changed = conn
.execute(
"UPDATE backup_codes SET used = 1 WHERE user_id = ?1 AND code_hash = ?2 AND used = 0",
rusqlite::params![uid, code_hash],
)
.unwrap_or(0);
changed > 0
});
if !backup_ok {
// Clear the pending cookie on repeated failure? No — let them retry within the 5 min window.
let redirect = format!(
"/mfa?error={}",
urlencoded("Invalid code. Please try again.")
);
return (StatusCode::SEE_OTHER, [(header::LOCATION, redirect)]).into_response();
}
}
// MFA passed — clear pending cookie, create session
let clear_pending =
"idp_mfa_pending=; Path=/; HttpOnly; SameSite=Lax; Secure; Max-Age=0".to_string();
let return_to = safe_return_to(None);
let mut resp =
create_session_response(&uid, &tenant_id, &ip, &extract_ua(&headers), &return_to);
resp.headers_mut()
.append(header::SET_COOKIE, clear_pending.parse().unwrap());
resp
}
// ---------------------------------------------------------------------------
// GET|POST /logout
// ---------------------------------------------------------------------------
async fn logout(headers: HeaderMap) -> Response {
let ip = extract_ip(&headers);
if let Some(session_id) = get_cookie(&headers, "idp_session") {
with_db(|conn| {
// Get user info for audit before deleting
let user_info: Option<(String, String)> = conn
.prepare("SELECT user_id, (SELECT tenant_id FROM users WHERE id = sessions.user_id) FROM sessions WHERE id = ?1")
.ok()
.and_then(|mut stmt| {
stmt.query_row(rusqlite::params![session_id], |row| {
Ok((row.get(0)?, row.get(1)?))
})
.ok()
});
conn.execute(
"DELETE FROM sessions WHERE id = ?1",
rusqlite::params![session_id],
)
.ok();
if let Some((user_id, tenant_id)) = user_info {
log_audit_event(
conn,
Some(&tenant_id),
Some(&user_id),
crate::lib::audit::SESSION_REVOKED,
Some(&ip),
None,
);
}
});
}
let clear = "idp_session=; Path=/; HttpOnly; SameSite=Lax; Secure; Max-Age=0";
(
StatusCode::SEE_OTHER,
[
(header::LOCATION, "/login".to_string()),
(header::SET_COOKIE, clear.to_string()),
],
)
.into_response()
}
// ---------------------------------------------------------------------------
// Helpers
// ---------------------------------------------------------------------------
struct UserRow {
id: String,
tenant_id: String,
password_hash: String,
mfa_enabled: bool,
locked_until: Option<i64>,
failed_attempts: i64,
}
fn create_session_response(
user_id: &str,
tenant_id: &str,
ip: &str,
user_agent: &str,
return_to: &str,
) -> Response {
let session_id = generate_secure_token(32);
let now = now_epoch();
let expires = now + 24 * 3600; // 24 hours
with_db(|conn| {
conn.execute(
"INSERT INTO sessions (id, user_id, ip, user_agent, created_at, expires_at)
VALUES (?1, ?2, ?3, ?4, ?5, ?6)",
rusqlite::params![session_id, user_id, ip, user_agent, now, expires],
)
.ok();
log_audit_event(
conn,
Some(tenant_id),
Some(user_id),
SESSION_CREATED,
Some(ip),
None,
);
log_audit_event(
conn,
Some(tenant_id),
Some(user_id),
USER_LOGIN,
Some(ip),
None,
);
});
let cookie =
format!("idp_session={session_id}; Path=/; HttpOnly; SameSite=Lax; Secure; Max-Age=86400");
let dest = if return_to.is_empty() { "/" } else { return_to };
let escaped_dest = esc_html(dest);
let html = format!(
r#"<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="refresh" content="0; url={escaped_dest}">
<title>Signing in - AkurAI ID</title>
</head>
<body>
<p>Signing in... <a href="{escaped_dest}">Continue</a></p>
</body>
</html>"#
);
(
StatusCode::OK,
[
(header::SET_COOKIE, cookie),
(header::CONTENT_TYPE, "text/html; charset=utf-8".to_string()),
],
html,
)
.into_response()
}
/// Validate return_to: must start with "/" and not "//", or match base_url origin.
fn safe_return_to(input: Option<&str>) -> String {
let val = input.unwrap_or("/").trim();
if val.is_empty() {
return "/".to_string();
}
// Relative path: must start with "/" but not "//" (protocol-relative)
if val.starts_with('/') && !val.starts_with("//") {
return val.to_string();
}
// Absolute URL: must match our base_url origin
let base = &config::get().base_url;
if let Some(origin) = extract_origin(base)
&& val.starts_with(&origin)
{
return val.to_string();
}
"/".to_string()
}
fn extract_origin(url: &str) -> Option<String> {
// Extract scheme + host from a URL like "https://auth.example.com/path"
let after_scheme = url
.strip_prefix("https://")
.map(|rest| ("https", rest))
.or_else(|| url.strip_prefix("http://").map(|rest| ("http", rest)))?;
let (scheme, rest) = after_scheme;
let host = rest.split('/').next()?;
Some(format!("{scheme}://{host}"))
}
fn now_epoch() -> i64 {
SystemTime::now()
.duration_since(UNIX_EPOCH)
.unwrap()
.as_secs() as i64
}
fn get_cookie(headers: &HeaderMap, name: &str) -> Option<String> {
let cookies = headers.get(header::COOKIE)?.to_str().ok()?;
let prefix = format!("{name}=");
for part in cookies.split(';') {
let part = part.trim();
if let Some(value) = part.strip_prefix(&prefix) {
return Some(value.to_string());
}
}
None
}
fn get_csrf_cookie(headers: &HeaderMap) -> Option<String> {
get_cookie(headers, "_csrf")
}
fn extract_ip(headers: &HeaderMap) -> String {
// Check X-Forwarded-For, X-Real-IP, then fall back to empty
headers
.get("x-forwarded-for")
.and_then(|v| v.to_str().ok())
.and_then(|v| v.split(',').next())
.map(|s| s.trim().to_string())
.or_else(|| {
headers
.get("x-real-ip")
.and_then(|v| v.to_str().ok())
.map(|s| s.trim().to_string())
})
.unwrap_or_default()
}
fn extract_ua(headers: &HeaderMap) -> String {
headers
.get(header::USER_AGENT)
.and_then(|v| v.to_str().ok())
.unwrap_or("")
.to_string()
}
fn login_redirect(error: &str, return_to: &str) -> Response {
let mut url = format!("/login?error={}", urlencoded(error));
if !return_to.is_empty() && return_to != "/" {
url.push_str(&format!("&return_to={}", urlencoded(return_to)));
}
(StatusCode::SEE_OTHER, [(header::LOCATION, url)]).into_response()
}
fn urlencoded(s: &str) -> String {
let mut out = String::with_capacity(s.len());
for b in s.bytes() {
match b {
b'A'..=b'Z' | b'a'..=b'z' | b'0'..=b'9' | b'-' | b'_' | b'.' | b'~' => {
out.push(b as char);
}
_ => {
out.push_str(&format!("%{:02X}", b));
}
}
}
out
}