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v/vlib/vweb/csrf/csrf_test.v

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import time
import net.http
import net.html
import vweb
import vweb.csrf
import os
const (
sport = 12385
localserver = '127.0.0.1:${sport}'
exit_after_time = 12000 // milliseconds
session_id_cookie_name = 'session_id'
csrf_config = &csrf.CsrfConfig{
secret: 'my-256bit-secret'
allowed_hosts: ['*']
session_cookie: session_id_cookie_name
}
allowed_origin = 'example.com'
csrf_config_origin = &csrf.CsrfConfig{
secret: 'my-256bit-secret'
allowed_hosts: [allowed_origin]
session_cookie: session_id_cookie_name
}
)
// Test CSRF functions
// =====================================
fn test_set_token() {
mut ctx := vweb.Context{}
token := csrf.set_token(mut ctx, csrf_config)
cookie := ctx.header.get(.set_cookie) or { '' }
assert cookie.len != 0
assert cookie.starts_with('${csrf_config.cookie_name}=')
}
fn test_protect() {
mut ctx := vweb.Context{}
token := csrf.set_token(mut ctx, csrf_config)
mut cookie := ctx.header.get(.set_cookie) or { '' }
// get cookie value from "name=value;"
cookie = cookie.split(' ')[0].all_after('=').replace(';', '')
form := {
csrf_config.token_name: token
}
cookie_map := {
csrf_config.cookie_name: cookie
}
ctx = vweb.Context{
form: form
req: http.Request{
method: .post
cookies: cookie_map
}
}
valid := csrf.protect(mut ctx, csrf_config)
assert valid == true
}
fn test_timeout() {
timeout := 1
short_time_config := &csrf.CsrfConfig{
secret: 'my-256bit-secret'
allowed_hosts: ['*']
session_cookie: session_id_cookie_name
max_age: timeout
}
mut ctx := vweb.Context{}
token := csrf.set_token(mut ctx, short_time_config)
// after 2 seconds the cookie should expire (maxage)
time.sleep(2 * time.second)
mut cookie := ctx.header.get(.set_cookie) or { '' }
// get cookie value from "name=value;"
cookie = cookie.split(' ')[0].all_after('=').replace(';', '')
form := {
short_time_config.token_name: token
}
cookie_map := {
short_time_config.cookie_name: cookie
}
ctx = vweb.Context{
form: form
req: http.Request{
method: .post
cookies: cookie_map
}
}
valid := csrf.protect(mut ctx, short_time_config)
assert valid == false
}
fn test_valid_origin() {
// valid because both Origin and Referer headers are present
token, cookie := get_token_cookie('')
form := {
csrf_config.token_name: token
}
cookie_map := {
csrf_config.cookie_name: cookie
}
mut req := http.Request{
method: .post
cookies: cookie_map
}
req.add_header(.origin, 'http://${allowed_origin}')
req.add_header(.referer, 'http://${allowed_origin}/test')
mut ctx := vweb.Context{
form: form
req: req
}
mut valid := csrf.protect(mut ctx, csrf_config_origin)
assert valid == true
}
fn test_invalid_origin() {
// invalid because either the Origin, Referer or neither are present
token, cookie := get_token_cookie('')
form := {
csrf_config.token_name: token
}
cookie_map := {
csrf_config.cookie_name: cookie
}
mut req := http.Request{
method: .post
cookies: cookie_map
}
req.add_header(.origin, 'http://${allowed_origin}')
mut ctx := vweb.Context{
form: form
req: req
}
mut valid := csrf.protect(mut ctx, csrf_config_origin)
assert valid == false
req = http.Request{
method: .post
cookies: cookie_map
}
req.add_header(.referer, 'http://${allowed_origin}/test')
ctx = vweb.Context{
form: form
req: req
}
valid = csrf.protect(mut ctx, csrf_config_origin)
assert valid == false
req = http.Request{
method: .post
cookies: cookie_map
}
ctx = vweb.Context{
form: form
req: req
}
valid = csrf.protect(mut ctx, csrf_config_origin)
assert valid == false
}
// Testing App
// ================================
struct App {
vweb.Context
pub mut:
csrf csrf.CsrfApp [vweb_global]
middlewares map[string][]vweb.Middleware
}
pub fn (mut app App) index() vweb.Result {
app.csrf.set_token(mut app.Context)
return app.html('<form action="/auth" method="post">
<input type="hidden" name="${app.csrf.token_name}" value="${app.csrf.token}"/>
<label for="password">Your password:</label>
<input type="text" id="password" name="password" placeholder="Your password" />
</form>')
}
[post]
pub fn (mut app App) auth() vweb.Result {
app.csrf.protect(mut app.Context)
return app.ok('authenticated')
}
pub fn (mut app App) middleware_index() vweb.Result {
csrftoken := csrf.set_token(mut app.Context, csrf_config)
return app.html('<form action="/auth" method="post">
<input type="hidden" name="${csrf_config.token_name}" value="${csrftoken}"/>
<label for="password">Your password:</label>
<input type="text" id="password" name="password" placeholder="Your password" />
</form>')
}
[post]
pub fn (mut app App) middleware_auth() vweb.Result {
return app.ok('middleware authenticated')
}
// App cleanup function
// ======================================
pub fn (mut app App) shutdown() vweb.Result {
spawn app.gracefull_exit()
return app.ok('good bye')
}
fn (mut app App) gracefull_exit() {
eprintln('>> webserver: gracefull_exit')
time.sleep(100 * time.millisecond)
exit(0)
}
fn exit_after_timeout[T](mut app T, timeout_in_ms int) {
time.sleep(timeout_in_ms * time.millisecond)
eprintln('>> webserver: pid: ${os.getpid()}, exiting ...')
app.shutdown()
eprintln('App timed out!')
assert true == false
}
// Tests for the App
// ======================================
fn test_run_app_in_background() {
mut app := &App{
csrf: csrf.CsrfApp{
secret: 'my-256bit-secret'
allowed_hosts: [allowed_origin]
session_cookie: session_id_cookie_name
}
middlewares: {
'/middleware_auth': [csrf.middleware(csrf_config)]
}
}
spawn vweb.run_at(app, port: sport, family: .ip)
spawn exit_after_timeout(mut app, exit_after_time)
time.sleep(500 * time.millisecond)
}
fn test_token_with_app() {
res := http.get('http://${localserver}/') or { panic(err) }
mut doc := html.parse(res.body)
inputs := doc.get_tag_by_attribute_value('type', 'hidden')
assert inputs.len == 1
assert csrf_config.token_name == inputs[0].attributes['name']
}
fn test_token_with_middleware() {
res := http.get('http://${localserver}/middleware_index') or { panic(err) }
mut doc := html.parse(res.body)
inputs := doc.get_tag_by_attribute_value('type', 'hidden')
assert inputs.len == 1
assert csrf_config.token_name == inputs[0].attributes['name']
}
// utility function to check whether the route at `path` is protected against csrf
fn protect_route_util(path string) {
mut req := http.Request{
method: .post
url: 'http://${localserver}/${path}'
}
mut res := req.do() or { panic(err) }
assert res.status() == .forbidden
// A valid request with CSRF protection should have a cookie session id,
// csrftoken in `app.form` and the hmac of that token in a cookie
session_id := 'user_session_id'
token, cookie := get_token_cookie(session_id)
header := http.new_header_from_map({
http.CommonHeader.origin: 'http://${allowed_origin}'
http.CommonHeader.referer: 'http://${allowed_origin}/route'
})
formdata := http.url_encode_form_data({
csrf_config.token_name: token
})
// session id is altered: test if session hijacking is possible
// if the session id the csrftoken changes so the cookie can't be validated
mut cookies := {
csrf_config.cookie_name: cookie
session_id_cookie_name: 'altered'
}
req = http.Request{
method: .post
url: 'http://${localserver}/${path}'
data: formdata
cookies: cookies
header: header
}
res = req.do() or { panic(err) }
assert res.status() == .forbidden
// Everything is valid now and the request should succeed
cookies[session_id_cookie_name] = session_id
req = http.Request{
method: .post
url: 'http://${localserver}/${path}'
data: formdata
cookies: cookies
header: header
}
res = req.do() or { panic(err) }
assert res.status() == .ok
}
fn test_protect_with_app() {
protect_route_util('/auth')
}
fn test_protect_with_middleware() {
protect_route_util('middleware_auth')
}
fn testsuite_end() {
// This test is guaranteed to be called last.
// It sends a request to the server to shutdown.
x := http.get('http://${localserver}/shutdown') or {
assert err.msg() == ''
return
}
assert x.status() == .ok
assert x.body == 'good bye'
}
// Utility functions
fn get_token_cookie(session_id string) (string, string) {
mut ctx := vweb.Context{
req: http.Request{
cookies: {
session_id_cookie_name: session_id
}
}
}
token := csrf.set_token(mut ctx, csrf_config_origin)
mut cookie := ctx.header.get(.set_cookie) or { '' }
// get cookie value from "name=value;"
cookie = cookie.split(' ')[0].all_after('=').replace(';', '')
return token, cookie
}