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Move sending refresh tokens out of JS.

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This commit is contained in:
Cory McWilliams 2024-04-02 12:42:31 -04:00
parent 0a0b0c1adb
commit cc92748747
3 changed files with 43 additions and 91 deletions
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10
core/app.js
View File

@ -88,7 +88,6 @@ function socket(request, response, client) {
let process;
let options = {};
let credentials = auth.query(request.headers);
let refresh = auth.makeRefresh(credentials);
response.onClose = async function () {
if (process && process.task) {
@ -241,14 +240,7 @@ function socket(request, response, client) {
}
};
response.upgrade(
100,
refresh
? {
'Set-Cookie': `session=${refresh.token}; path=/; Max-Age=${refresh.interval}; Secure; SameSite=Strict`,
}
: {}
);
response.upgrade(100, {});
}
export {socket, App};

67
core/auth.js
View File

@ -1,23 +1,4 @@
import * as core from './core.js';
import * as form from './form.js';
const kRefreshInterval = 1 * 7 * 24 * 60 * 60 * 1000;
/**
* Makes a Base64 value URL safe
* @param {string} value
* @returns TODOC
*/
function b64url(value) {
value = value.replaceAll('+', '-').replaceAll('/', '_');
let equals = value.indexOf('=');
if (equals !== -1) {
return value.substring(0, equals);
} else {
return value;
}
}
/**
* TODOC
@ -37,38 +18,6 @@ function unb64url(value) {
}
}
/**
* Creates a JSON Web Token
* @param {object} payload Object: {"name": "username"}
* @returns the JWT
*/
function makeJwt(payload) {
const ids = ssb.getIdentities(':auth');
let id;
if (ids?.length) {
id = ids[0];
} else {
id = ssb.createIdentity(':auth');
}
const final_payload = b64url(
base64Encode(
JSON.stringify(
Object.assign({}, payload, {
exp: new Date().valueOf() + kRefreshInterval,
})
)
)
);
const jwt = [
b64url(base64Encode(JSON.stringify({alg: 'HS256', typ: 'JWT'}))),
final_payload,
b64url(ssb.hmacsha256sign(final_payload, ':auth', id)),
].join('.');
return jwt;
}
/**
* Validates a JWT ?
* @param {*} session TODOC
@ -178,18 +127,4 @@ function query(headers) {
}
}
/**
* Refreshes a JWT ?
* @param {*} credentials TODOC
* @returns
*/
function makeRefresh(credentials) {
if (credentials?.session?.name) {
return {
token: makeJwt({name: credentials.session.name}),
interval: kRefreshInterval,
};
}
}
export {query, makeRefresh};
export {query};

57
src/httpd.js.c
View File

@ -35,7 +35,10 @@
const int64_t k_refresh_interval = 1ULL * 7 * 24 * 60 * 60 * 1000;
static JSValue _authenticate_jwt(JSContext* context, const char* jwt);
static JSValue _httpd_websocket_upgrade(JSContext* context, JSValueConst this_val, int argc, JSValueConst* argv);
static const char* _make_session_jwt(tf_ssb_t* ssb, const char* name);
static const char* _make_set_session_cookie_header(tf_http_request_t* request, const char* session_cookie);
static JSClassID _httpd_class_id;
static JSClassID _httpd_request_class_id;
@ -323,6 +326,22 @@ static JSValue _httpd_websocket_upgrade(JSContext* context, JSValueConst this_va
headers[headers_count * 2 + 1] = key;
headers_count++;
tf_ssb_t* ssb = tf_task_get_ssb(tf_task_get(context));
const char* session = tf_http_get_cookie(tf_http_request_get_header(request, "cookie"), "session");
JSValue jwt = _authenticate_jwt(context, session);
tf_free((void*)session);
JSValue name = JS_GetPropertyStr(context, jwt, "name");
const char* name_string = JS_ToCString(context, name);
const char* session_token = _make_session_jwt(ssb, name_string);
const char* cookie = _make_set_session_cookie_header(request, session_token);
tf_free((void*)session_token);
JS_FreeCString(context, name_string);
JS_FreeValue(context, name);
JS_FreeValue(context, jwt);
headers[headers_count * 2 + 0] = "Set-Cookie";
headers[headers_count * 2 + 1] = cookie ? cookie : "";
headers_count++;
bool send_version = !tf_http_request_get_header(request, "sec-websocket-version") || strcmp(tf_http_request_get_header(request, "sec-websocket-version"), "13") != 0;
if (send_version)
{
@ -342,6 +361,8 @@ static JSValue _httpd_websocket_upgrade(JSContext* context, JSValueConst this_va
JS_FreeCString(context, headers[i * 2 + 1]);
}
tf_free((void*)cookie);
request->on_message = _httpd_message_callback;
request->on_close = _httpd_websocket_close_callback;
request->context = context;
@ -833,19 +854,25 @@ typedef struct _login_request_t
bool session_is_new;
} login_request_t;
static const char* _make_set_session_cookie_header(tf_http_request_t* request, const char* session_cookie)
{
const char* k_pattern = "session=%s; path=/; Max-Age=%" PRId64 "; %sSameSite=Strict; HttpOnly";
int length = session_cookie ? snprintf(NULL, 0, k_pattern, session_cookie, k_refresh_interval, request->is_tls ? "Secure; " : "") : 0;
char* cookie = length ? tf_malloc(length + 1) : NULL;
if (cookie)
{
snprintf(cookie, length + 1, k_pattern, session_cookie, k_refresh_interval, request->is_tls ? "Secure; " : "");
}
return cookie;
}
static void _httpd_endpoint_login_file_read_callback(tf_task_t* task, const char* path, int result, const void* data, void* user_data)
{
login_request_t* login = user_data;
tf_http_request_t* request = login->request;
if (result >= 0)
{
const char* k_pattern = "session=%s; path=/; Max-Age=%" PRId64 "; %sSameSite=Strict; HttpOnly";
int length = login->session_cookie ? snprintf(NULL, 0, k_pattern, login->session_cookie, k_refresh_interval, request->is_tls ? "Secure; " : "") : 0;
char* cookie = length ? tf_malloc(length + 1) : NULL;
if (cookie)
{
snprintf(cookie, length + 1, k_pattern, login->session_cookie, k_refresh_interval, request->is_tls ? "Secure; " : "");
}
const char* cookie = _make_set_session_cookie_header(request, login->session_cookie);
const char* headers[] = {
"Content-Type",
"text/html; charset=utf-8",
@ -884,7 +911,7 @@ static void _httpd_endpoint_login_file_read_callback(tf_task_t* task, const char
{
tf_http_respond(request, 200, headers, tf_countof(headers) / 2, data, result);
}
tf_free(cookie);
tf_free((void*)cookie);
}
else
{
@ -1137,6 +1164,10 @@ static bool _get_auth_private_key(tf_ssb_t* ssb, uint8_t* out_private_key)
static const char* _make_session_jwt(tf_ssb_t* ssb, const char* name)
{
if (!name || !*name)
{
return NULL;
}
uint8_t private_key[crypto_sign_SECRETKEYBYTES] = { 0 };
if (!_get_auth_private_key(ssb, private_key))
{
@ -1336,13 +1367,7 @@ static void _httpd_endpoint_login(tf_http_request_t* request)
snprintf(url, sizeof(url), "%s%s/", request->is_tls ? "https://" : "http://", tf_http_request_get_header(request, "host"));
return_url = url;
}
const char* k_pattern = "session=%s; path=/; Max-Age=%" PRId64 "; %sSameSite=Strict; HttpOnly";
int length = send_session ? snprintf(NULL, 0, k_pattern, send_session, k_refresh_interval, request->is_tls ? "Secure; " : "") : 0;
char* cookie = length ? tf_malloc(length + 1) : NULL;
if (cookie)
{
snprintf(cookie, length + 1, k_pattern, send_session, k_refresh_interval, request->is_tls ? "Secure; " : "");
}
const char* cookie = _make_set_session_cookie_header(request, send_session);
const char* headers[] = {
"Location",
return_url,
@ -1350,7 +1375,7 @@ static void _httpd_endpoint_login(tf_http_request_t* request)
cookie ? cookie : "",
};
tf_http_respond(request, 303, headers, tf_countof(headers) / 2, NULL, 0);
tf_free(cookie);
tf_free((void*)cookie);
tf_free((void*)send_session);
}
else