feat: usos sign-in, private calendar feed and timetable archive

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hh committed 2026-10-11 00:47:38 +00:00
commit 7d4e21f977
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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<meta name="robots" content="noindex">
<title>usoscal</title>
<link rel="icon" href="data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Crect width='16' height='16' rx='3' fill='%231f6f54'/%3E%3Cpath d='M4 6h8M4 9h8M4 12h5' stroke='%23fff' stroke-width='1.4' stroke-linecap='round'/%3E%3C/svg%3E">
<style>
:root {
color-scheme: light dark;
--bg: #f6f5f1; --ink: #1c1d1a; --soft: #5d6058; --line: #d9d7ce; --field: #fff;
--accent: #1f6f54; --on-accent: #fff; --warn: #9a3b1e;
}
@media (prefers-color-scheme: dark) {
:root { --bg: #151714; --ink: #e9e8e1; --soft: #a2a59b; --line: #33362f; --field: #1d201c; --accent: #6cc3a0; --on-accent: #0d1a14; --warn: #f0997a; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.55 ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif; }
main { max-width: 38rem; margin: 0 auto; padding: 3.5rem 1.25rem 4rem; }
h1 { font-size: 1.5rem; line-height: 1.2; margin: 0 0 .35rem; letter-spacing: -.01em; }
h2 { font-size: 1rem; margin: 0 0 .5rem; }
p { margin: 0 0 .75rem; text-wrap: pretty; }
.date { white-space: nowrap; }
.lede { color: var(--soft); margin-bottom: 2rem; }
.soft { color: var(--soft); font-size: .9rem; }
.warn { color: var(--warn); }
section { border-top: 1px solid var(--line); padding: 1.5rem 0 .75rem; }
form { margin: 0; }
.row { display: flex; flex-wrap: wrap; gap: .5rem; align-items: center; margin-bottom: .75rem; }
input[type=text] { flex: 1 1 16rem; min-width: 0; font: .85rem/1.4 ui-monospace, SFMono-Regular, Menlo, monospace; padding: .6rem .7rem; color: var(--ink); background: var(--field); border: 1px solid var(--line); border-radius: 6px; }
button, .button { font: inherit; font-weight: 550; padding: .55rem .95rem; border-radius: 6px; border: 1px solid var(--line); background: var(--field); color: var(--ink); cursor: pointer; text-decoration: none; display: inline-block; }
button.primary, .button.primary { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
button.danger { color: var(--warn); }
button:focus-visible, .button:focus-visible, input:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
label { display: flex; gap: .55rem; align-items: baseline; padding: .5rem 0; margin-bottom: .1rem; cursor: pointer; }
input[type=checkbox] { accent-color: var(--accent); transform: translateY(1px); }
</style>
</head>
<body>
<main>
<h1>usoscal</h1>
<p class="lede">Your USOS timetable as a calendar subscription that can keep the classes that have already passed.</p>
{{if .Error}}
<section>
<p class="warn">{{.Error}}</p>
<p><a class="button" href="/">Back</a></p>
</section>
{{else if not .SignedIn}}
<section>
<p>Sign in with your university account and you get a private calendar address for Google Calendar, Apple Calendar, Outlook or anything else that reads iCalendar. Every class carries the course, the class type, the room with the building address, and the lecturer.</p>
<p>USOS only exports what is ahead of today. Turn on the archive and past classes stay in your calendar.</p>
<form class="row" method="post" action="/login"><button class="primary">Sign in with USOS</button></form>
<p class="soft">USOS will ask you to allow reading your studies and to keep that access while you are offline, which the daily update needs. The access tokens are stored encrypted, and signing out revokes them.</p>
</section>
{{else}}
<p>Signed in as <strong>{{.Name}}</strong>.</p>
{{if not .Connected}}
<section>
<p class="warn">{{if .SyncError}}{{.SyncError}}{{else}}USOS access is missing. Sign in again to resume updates.{{end}}</p>
<form class="row" method="post" action="/login"><button class="primary">Sign in with USOS again</button></form>
</section>
{{end}}
<section>
<h2>Calendar address</h2>
{{if .FeedURL}}
<div class="row">
<input type="text" readonly value="{{.FeedURL}}" aria-label="Calendar address">
<a class="button primary" href="{{.WebcalURL}}">Subscribe</a>
</div>
<p class="soft">Add it as a subscription by URL, not as a file import, so it keeps updating. Anyone who has this address can read your timetable. Issuing a new one or revoking it stops the current address at once.</p>
<div class="row">
<form method="post" action="/link"><button name="action" value="rotate">Issue a new address</button></form>
<form method="post" action="/link"><button class="danger" name="action" value="revoke">Revoke</button></form>
</div>
{{else}}
<p>There is no active address.</p>
<form class="row" method="post" action="/link"><button class="primary" name="action" value="rotate">Create an address</button></form>
{{end}}
</section>
<section>
<h2>Archive</h2>
<form method="post" action="/archive">
<label><input type="checkbox" name="archive" {{if .Archive}}checked{{end}}> <span>Keep classes after they have passed</span></label>
<p class="soft">The first run also fetches earlier terms, as far back as USOS still has them. Turning the archive off deletes the stored past.</p>
<div class="row"><button>Save</button></div>
</form>
{{if .Backfilling}}<p class="soft">Earlier terms are being fetched, reload in a minute.</p>{{end}}
</section>
<section>
<h2>Status</h2>
<p class="soft">
{{if .Events}}{{.Events}} classes in the calendar, the earliest on <span class="date">{{.First}}</span>.{{else}}No classes in the calendar yet.{{end}}
{{if .Synced}}Last updated from USOS on <span class="date">{{.Synced}}</span>.{{else if .Connected}}The first update is running, reload in a minute.{{end}}
</p>
{{if and .Connected .SyncError}}<p class="warn">{{.SyncError}}</p>{{end}}
</section>
<section>
<h2>Sign out</h2>
<form method="post" action="/logout">
<p class="soft">Signing out revokes this app's access in USOS, deletes the stored tokens and stops the calendar address.</p>
<label><input type="checkbox" name="delete"> <span>Also delete my stored timetable</span></label>
<div class="row"><button class="danger">Sign out and disconnect</button></div>
</form>
</section>
{{end}}
</main>
</body>
</html>
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package server
import (
"context"
"crypto/rand"
"crypto/sha256"
"crypto/subtle"
_ "embed"
"encoding/base64"
"encoding/hex"
"errors"
"html/template"
"log"
"net/http"
"net/url"
"strings"
"sync"
"time"
"usoscal/internal/ical"
"usoscal/internal/seal"
"usoscal/internal/store"
"usoscal/internal/syncer"
"usoscal/internal/usos"
)
const (
sessionCookie = "usoscal_session"
loginCookie = "usoscal_login"
sessionLifetime = 7 * 24 * time.Hour
loginLifetime = 30 * time.Minute
pendingLimit = 500
revokeTimeout = 10 * time.Second
feedPurpose = "/feed_token"
feedSuffix = ".ics"
dateFormat = "2 January 2006"
momentFormat = "2 January 2006 at 15:04"
calendarName = "USOS"
)
var (
//go:embed page.html
pageSource string
page = template.Must(template.New("page").Parse(pageSource))
)
type Server struct {
publicURL string
host string
secure bool
store *store.Store
usos *usos.Client
box *seal.Box
syncer *syncer.Syncer
mu sync.Mutex
pending map[string]pendingLogin
}
type pendingLogin struct {
secret string
state string
expires time.Time
}
type view struct {
SignedIn bool
Connected bool
Name string
FeedURL string
WebcalURL string
Archive bool
Backfilling bool
Events int
First string
Synced string
SyncError string
Error string
}
func New(publicURL string, st *store.Store, client *usos.Client, box *seal.Box, sync *syncer.Syncer) (http.Handler, error) {
parsed, err := url.Parse(publicURL)
if err != nil || parsed.Host == "" {
return nil, errors.New("PUBLIC_URL must be an absolute URL")
}
s := &Server{
publicURL: strings.TrimRight(publicURL, "/"),
host: parsed.Hostname(),
secure: parsed.Scheme == "https",
store: st,
usos: client,
box: box,
syncer: sync,
pending: map[string]pendingLogin{},
}
mux := http.NewServeMux()
mux.HandleFunc("GET /{$}", s.home)
mux.HandleFunc("POST /login", s.login)
mux.HandleFunc("GET /callback", s.callback)
mux.HandleFunc("POST /link", s.signedIn(s.link))
mux.HandleFunc("POST /archive", s.signedIn(s.archive))
mux.HandleFunc("POST /logout", s.signedIn(s.logout))
mux.HandleFunc("GET /f/{file}", s.feed)
mux.HandleFunc("GET /healthz", func(w http.ResponseWriter, _ *http.Request) { w.WriteHeader(http.StatusNoContent) })
return http.NewCrossOriginProtection().Handler(headers(mux)), nil
}
func headers(next http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
h := w.Header()
h.Set("Referrer-Policy", "no-referrer")
h.Set("X-Content-Type-Options", "nosniff")
h.Set("X-Robots-Tag", "noindex, nofollow")
h.Set("Content-Security-Policy", "default-src 'none'; style-src 'unsafe-inline'; img-src data:; base-uri 'none'; frame-ancestors 'none'")
h.Set("Cache-Control", "no-store")
next.ServeHTTP(w, r)
})
}
func randomToken() string {
buf := make([]byte, 32)
if _, err := rand.Read(buf); err != nil {
panic(err)
}
return base64.RawURLEncoding.EncodeToString(buf)
}
func hashToken(token string) string {
sum := sha256.Sum256([]byte(token))
return hex.EncodeToString(sum[:])
}
func (s *Server) render(w http.ResponseWriter, status int, data view) {
w.Header().Set("Content-Type", "text/html; charset=utf-8")
w.WriteHeader(status)
if err := page.Execute(w, data); err != nil {
log.Printf("page render failed: %v", err)
}
}
func (s *Server) fail(w http.ResponseWriter, status int, message string) {
s.render(w, status, view{Error: message})
}
func (s *Server) cookie(name, value, path string, lifetime time.Duration) *http.Cookie {
maxAge := int(lifetime.Seconds())
if value == "" {
maxAge = -1
}
return &http.Cookie{
Name: name, Value: value, Path: path, MaxAge: maxAge,
HttpOnly: true, Secure: s.secure, SameSite: http.SameSiteLaxMode,
}
}
func (s *Server) sessionUser(r *http.Request) (store.User, bool) {
cookie, err := r.Cookie(sessionCookie)
if err != nil || cookie.Value == "" {
return store.User{}, false
}
user, err := s.store.SessionUser(r.Context(), hashToken(cookie.Value))
return user, err == nil
}
func (s *Server) signedIn(next func(http.ResponseWriter, *http.Request, store.User)) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
user, ok := s.sessionUser(r)
if !ok {
http.Redirect(w, r, "/", http.StatusSeeOther)
return
}
next(w, r, user)
}
}
func (s *Server) home(w http.ResponseWriter, r *http.Request) {
user, ok := s.sessionUser(r)
if !ok {
s.render(w, http.StatusOK, view{})
return
}
data := view{
SignedIn: true,
Connected: user.Connected(),
Name: user.Name,
Archive: user.Archive,
Backfilling: user.Archive && !user.Backfilled && user.Connected(),
SyncError: user.SyncError,
}
if len(user.FeedToken) > 0 {
if token, err := s.box.Open(user.FeedToken, user.ID+feedPurpose); err == nil {
data.FeedURL = s.publicURL + "/f/" + token + feedSuffix
data.WebcalURL = "webcal://" + strings.SplitN(data.FeedURL, "://", 2)[1]
}
}
count, first, err := s.store.EventSpan(r.Context(), user.ID)
if err != nil {
log.Printf("event count failed: %v", err)
}
data.Events = count
if !first.IsZero() {
data.First = first.In(usos.Location).Format(dateFormat)
}
if !user.SyncedAt.IsZero() && user.SyncError == "" {
data.Synced = user.SyncedAt.In(usos.Location).Format(momentFormat)
}
s.render(w, http.StatusOK, data)
}
func (s *Server) login(w http.ResponseWriter, r *http.Request) {
s.mu.Lock()
now := time.Now()
for key, login := range s.pending {
if now.After(login.expires) {
delete(s.pending, key)
}
}
busy := len(s.pending) >= pendingLimit
s.mu.Unlock()
if busy {
s.fail(w, http.StatusServiceUnavailable, "Too many sign-ins are in progress. Try again in a few minutes.")
return
}
request, err := s.usos.RequestToken(r.Context(), s.publicURL+"/callback")
if err != nil {
log.Printf("request token failed: %v", err)
s.fail(w, http.StatusBadGateway, "USOS did not answer the sign-in request. Try again in a moment.")
return
}
state := randomToken()
s.mu.Lock()
s.pending[request.Key] = pendingLogin{secret: request.Secret, state: hashToken(state), expires: now.Add(loginLifetime)}
s.mu.Unlock()
http.SetCookie(w, s.cookie(loginCookie, state, "/callback", loginLifetime))
http.Redirect(w, r, s.usos.AuthorizeURL(request), http.StatusSeeOther)
}
func (s *Server) takePending(r *http.Request) (usos.Token, bool) {
key := r.URL.Query().Get("oauth_token")
s.mu.Lock()
login, found := s.pending[key]
delete(s.pending, key)
s.mu.Unlock()
cookie, err := r.Cookie(loginCookie)
if !found || err != nil || time.Now().After(login.expires) ||
subtle.ConstantTimeCompare([]byte(hashToken(cookie.Value)), []byte(login.state)) != 1 {
return usos.Token{}, false
}
return usos.Token{Key: key, Secret: login.secret}, true
}
func (s *Server) callback(w http.ResponseWriter, r *http.Request) {
const expired = "This sign-in has expired or was cancelled. Start again from the first page."
request, ok := s.takePending(r)
verifier := r.URL.Query().Get("oauth_verifier")
http.SetCookie(w, s.cookie(loginCookie, "", "/callback", 0))
if !ok || verifier == "" {
s.fail(w, http.StatusBadRequest, expired)
return
}
ctx := r.Context()
access, err := s.usos.AccessToken(ctx, request, verifier)
if err != nil {
log.Printf("access token exchange failed: %v", err)
s.fail(w, http.StatusBadGateway, expired)
return
}
me, err := s.usos.Me(ctx, access)
if err != nil {
log.Printf("reading the signed-in user failed: %v", err)
s.fail(w, http.StatusBadGateway, "USOS did not return your account. Try again in a moment.")
return
}
id := string(me.ID)
previous, err := s.store.User(ctx, id)
if err != nil && !errors.Is(err, store.ErrNotFound) {
s.internal(w, err)
return
}
if err := s.store.Connect(ctx, id, me.Name(),
s.box.Seal(access.Key, id+syncer.TokenPurpose), s.box.Seal(access.Secret, id+syncer.SecretPurpose)); err != nil {
s.internal(w, err)
return
}
if !previous.Connected() && len(previous.FeedToken) == 0 {
if err := s.issueFeed(ctx, id); err != nil {
s.internal(w, err)
return
}
}
session := randomToken()
if err := s.store.CreateSession(ctx, hashToken(session), id, time.Now().Add(sessionLifetime)); err != nil {
s.internal(w, err)
return
}
s.syncer.Kick(id)
http.SetCookie(w, s.cookie(sessionCookie, session, "/", sessionLifetime))
http.Redirect(w, r, "/", http.StatusSeeOther)
}
func (s *Server) internal(w http.ResponseWriter, err error) {
log.Printf("request failed: %v", err)
s.fail(w, http.StatusInternalServerError, "Something went wrong on our side. Try again in a moment.")
}
func (s *Server) issueFeed(ctx context.Context, userID string) error {
token := randomToken()
return s.store.SetFeed(ctx, userID, hashToken(token), s.box.Seal(token, userID+feedPurpose))
}
func (s *Server) link(w http.ResponseWriter, r *http.Request, user store.User) {
var err error
switch r.PostFormValue("action") {
case "rotate":
err = s.issueFeed(r.Context(), user.ID)
case "revoke":
err = s.store.SetFeed(r.Context(), user.ID, "", nil)
}
if err != nil {
s.internal(w, err)
return
}
http.Redirect(w, r, "/", http.StatusSeeOther)
}
func (s *Server) archive(w http.ResponseWriter, r *http.Request, user store.User) {
on := r.PostFormValue("archive") != ""
if on != user.Archive {
ctx := r.Context()
if err := s.store.SetArchive(ctx, user.ID, on); err != nil {
s.internal(w, err)
return
}
if !on {
if err := s.store.DeleteEventsBefore(ctx, user.ID, syncer.Today(time.Now())); err != nil {
s.internal(w, err)
return
}
}
s.syncer.Kick(user.ID)
}
http.Redirect(w, r, "/", http.StatusSeeOther)
}
func (s *Server) logout(w http.ResponseWriter, r *http.Request, user store.User) {
if user.Connected() {
s.revoke(r.Context(), user)
}
var err error
if r.PostFormValue("delete") != "" {
err = s.store.DeleteUser(r.Context(), user.ID)
} else {
err = s.store.Disconnect(r.Context(), user.ID)
}
if err != nil {
s.internal(w, err)
return
}
http.SetCookie(w, s.cookie(sessionCookie, "", "/", 0))
http.Redirect(w, r, "/", http.StatusSeeOther)
}
func (s *Server) revoke(ctx context.Context, user store.User) {
key, keyErr := s.box.Open(user.USOSToken, user.ID+syncer.TokenPurpose)
secret, secretErr := s.box.Open(user.USOSSecret, user.ID+syncer.SecretPurpose)
if keyErr != nil || secretErr != nil {
return
}
ctx, cancel := context.WithTimeout(ctx, revokeTimeout)
defer cancel()
if err := s.usos.Revoke(ctx, usos.Token{Key: key, Secret: secret}); err != nil && !errors.Is(err, usos.ErrUnauthorized) {
log.Printf("revoking the USOS token of user %s failed: %v", user.ID, err)
}
}
func (s *Server) feed(w http.ResponseWriter, r *http.Request) {
token, isCalendar := strings.CutSuffix(r.PathValue("file"), feedSuffix)
if !isCalendar || token == "" {
http.NotFound(w, r)
return
}
user, err := s.store.UserByFeed(r.Context(), hashToken(token))
if err != nil {
http.NotFound(w, r)
return
}
events, err := s.store.Events(r.Context(), user.ID)
if err != nil {
log.Printf("feed read failed: %v", err)
http.Error(w, "temporarily unavailable", http.StatusInternalServerError)
return
}
w.Header().Set("Content-Type", "text/calendar; charset=utf-8")
w.Header().Set("Content-Disposition", `inline; filename="usos.ics"`)
if err := ical.Write(w, calendarName, s.host, events); err != nil {
log.Printf("feed write failed: %v", err)
}
}
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package server
import (
"bytes"
"context"
"database/sql"
"encoding/base64"
"io"
"net/http"
"net/http/cookiejar"
"net/http/httptest"
"net/url"
"path/filepath"
"regexp"
"strings"
"testing"
"time"
"usoscal/internal/seal"
"usoscal/internal/store"
"usoscal/internal/syncer"
"usoscal/internal/usos"
"usoscal/internal/usostest"
)
var feedAddress = regexp.MustCompile(`value="(http[^"]+/f/[^"]+\.ics)"`)
type app struct {
t *testing.T
fake *usostest.Fake
store *store.Store
syncer *syncer.Syncer
site *httptest.Server
browser *http.Client
dbPath string
}
func newApp(t *testing.T) *app {
t.Helper()
fake := usostest.New()
t.Cleanup(fake.Close)
dbPath := filepath.Join(t.TempDir(), "test.db")
st, err := store.Open(dbPath)
if err != nil {
t.Fatal(err)
}
t.Cleanup(func() { st.Close() })
box, err := seal.New(base64.StdEncoding.EncodeToString(bytes.Repeat([]byte{5}, 32)))
if err != nil {
t.Fatal(err)
}
client := usos.New(fake.URL, usostest.ConsumerKey, usostest.ConsumerSecret)
sync := syncer.New(st, client, box, 24*time.Hour)
sync.Pause = 0
sync.Now = func() time.Time { return time.Date(2026, 10, 11, 2, 30, 0, 0, usos.Location) }
site := httptest.NewUnstartedServer(nil)
site.Start()
t.Cleanup(site.Close)
handler, err := New(site.URL, st, client, box, sync)
if err != nil {
t.Fatal(err)
}
site.Config.Handler = handler
jar, err := cookiejar.New(nil)
if err != nil {
t.Fatal(err)
}
return &app{t: t, fake: fake, store: st, syncer: sync, site: site, browser: &http.Client{Jar: jar}, dbPath: dbPath}
}
func (a *app) do(client *http.Client, method, path string, form url.Values, header http.Header) (int, string) {
a.t.Helper()
target := path
if strings.HasPrefix(path, "/") {
target = a.site.URL + path
}
var body io.Reader
if form != nil {
body = strings.NewReader(form.Encode())
}
req, err := http.NewRequestWithContext(context.Background(), method, target, body)
if err != nil {
a.t.Fatal(err)
}
if form != nil {
req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
}
for key, values := range header {
req.Header[key] = values
}
res, err := client.Do(req)
if err != nil {
a.t.Fatal(err)
}
defer res.Body.Close()
data, err := io.ReadAll(res.Body)
if err != nil {
a.t.Fatal(err)
}
return res.StatusCode, string(data)
}
func (a *app) get(path string) (int, string) {
a.t.Helper()
return a.do(a.browser, http.MethodGet, path, nil, nil)
}
func (a *app) post(path string, form url.Values) (int, string) {
a.t.Helper()
return a.do(a.browser, http.MethodPost, path, form, nil)
}
func (a *app) anonymous(path string) (int, string) {
a.t.Helper()
return a.do(http.DefaultClient, http.MethodGet, path, nil, nil)
}
func (a *app) signIn() string {
a.t.Helper()
status, body := a.post("/login", url.Values{})
if status != http.StatusOK || !strings.Contains(body, "Signed in as <strong>Ada Nowak</strong>") {
a.t.Fatalf("sign-in ended with %d:\n%s", status, body)
}
return a.address(body)
}
func (a *app) address(body string) string {
a.t.Helper()
match := feedAddress.FindStringSubmatch(body)
if match == nil {
a.t.Fatalf("no calendar address on the page:\n%s", body)
}
return match[1]
}
func (a *app) sync() {
a.t.Helper()
if err := a.syncer.Sync(context.Background(), usostest.UserID); err != nil {
a.t.Fatal(err)
}
}
func TestSignInGivesAWorkingCalendar(t *testing.T) {
a := newApp(t)
if status, body := a.get("/"); status != http.StatusOK || !strings.Contains(body, "Sign in with USOS") {
t.Fatalf("front page: %d", status)
}
address := a.signIn()
a.sync()
status, calendar := a.anonymous(address)
if status != http.StatusOK {
t.Fatalf("feed status %d", status)
}
unfolded := strings.ReplaceAll(calendar, "\r\n ", "")
for _, want := range []string{
"BEGIN:VCALENDAR",
"DTSTART:20261014T113000Z",
"SUMMARY:Algebra liniowa z elementami matematyki dyskretnej (Ćwiczenia)",
`LOCATION:303 (A1 - BM - Budowa Maszyn\, budynek z zegarem)\, ul. Piotrowo 3\, 61-138 Poznań\, Polska`,
`Lecturer: dr inż. Jan Kowalski`,
} {
if !strings.Contains(unfolded, want) {
t.Errorf("feed lacks %q", want)
}
}
if strings.Contains(unfolded, "DTSTART:20261007") {
t.Error("past class in the feed while the archive is off")
}
}
func TestArchiveAddsThePast(t *testing.T) {
a := newApp(t)
address := a.signIn()
a.sync()
if status, body := a.post("/archive", url.Values{"archive": {"on"}}); status != http.StatusOK || !strings.Contains(body, `name="archive" checked`) {
t.Fatalf("archive not switched on: %d", status)
}
a.sync()
if _, calendar := a.anonymous(address); !strings.Contains(calendar, "DTSTART:20261007T113000Z") || !strings.Contains(calendar, "DTSTART:20251001T113000Z") {
t.Error("archived classes are missing from the feed")
}
a.post("/archive", url.Values{})
if _, calendar := a.anonymous(address); strings.Contains(calendar, "DTSTART:20261007") {
t.Error("past classes stayed in the feed after the archive was turned off")
}
}
func TestAddressCanBeReissuedAndRevoked(t *testing.T) {
a := newApp(t)
first := a.signIn()
a.sync()
_, body := a.post("/link", url.Values{"action": {"rotate"}})
second := a.address(body)
if second == first {
t.Fatal("address did not change")
}
if status, _ := a.anonymous(first); status != http.StatusNotFound {
t.Errorf("old address answers %d after a new one was issued", status)
}
if status, _ := a.anonymous(second); status != http.StatusOK {
t.Errorf("new address answers %d", status)
}
_, body = a.post("/link", url.Values{"action": {"revoke"}})
if !strings.Contains(body, "There is no active address") {
t.Error("page still shows an address after revocation")
}
if status, _ := a.anonymous(second); status != http.StatusNotFound {
t.Errorf("revoked address answers %d", status)
}
if status, _ := a.anonymous("/f/.ics"); status != http.StatusNotFound {
t.Errorf("empty token answers %d", status)
}
}
func TestSignOutDisconnectsAndCanDeleteEverything(t *testing.T) {
a := newApp(t)
address := a.signIn()
a.sync()
status, body := a.post("/logout", url.Values{})
if status != http.StatusOK || !strings.Contains(body, "Sign in with USOS") {
t.Fatalf("after sign-out: %d", status)
}
if !a.fake.WasRevoked() {
t.Error("the USOS token was not revoked")
}
if status, _ := a.anonymous(address); status != http.StatusNotFound {
t.Errorf("address answers %d after sign-out", status)
}
ctx := context.Background()
user, err := a.store.User(ctx, usostest.UserID)
if err != nil || user.Connected() || len(user.FeedToken) != 0 {
t.Errorf("tokens left after sign-out: %+v %v", user, err)
}
if events, _ := a.store.Events(ctx, usostest.UserID); len(events) == 0 {
t.Error("timetable deleted although deletion was not requested")
}
b := newApp(t)
b.signIn()
b.sync()
b.post("/logout", url.Values{"delete": {"on"}})
if _, err := b.store.User(ctx, usostest.UserID); err == nil {
t.Error("user row left after sign-out with deletion")
}
if events, _ := b.store.Events(ctx, usostest.UserID); len(events) != 0 {
t.Error("events left after sign-out with deletion")
}
}
func TestSecretsAreNotStoredInTheClear(t *testing.T) {
a := newApp(t)
address := a.signIn()
feedToken := strings.TrimSuffix(address[strings.LastIndex(address, "/")+1:], ".ics")
if len(feedToken) < 43 {
t.Errorf("feed token is only %d characters", len(feedToken))
}
db, err := sql.Open("sqlite", "file:"+a.dbPath)
if err != nil {
t.Fatal(err)
}
defer db.Close()
var token, secret, feed []byte
var feedHash string
if err := db.QueryRow(`select usos_token, usos_secret, feed_token, feed_hash from users`).Scan(&token, &secret, &feed, &feedHash); err != nil {
t.Fatal(err)
}
stored := string(token) + string(secret) + string(feed) + feedHash
for _, plain := range []string{"access-token", "access-secret", feedToken} {
if strings.Contains(stored, plain) {
t.Errorf("%q is readable in the database", plain)
}
}
var sessionHash string
if err := db.QueryRow(`select token_hash from sessions`).Scan(&sessionHash); err != nil {
t.Fatal(err)
}
site, _ := url.Parse(a.site.URL)
for _, cookie := range a.browser.Jar.Cookies(site) {
if cookie.Name == sessionCookie && cookie.Value == sessionHash {
t.Error("session token stored unhashed")
}
}
}
func TestForeignRequestsAreRejected(t *testing.T) {
a := newApp(t)
a.signIn()
status, _ := a.do(a.browser, http.MethodPost, "/link", url.Values{"action": {"revoke"}}, http.Header{"Sec-Fetch-Site": {"cross-site"}})
if status != http.StatusForbidden {
t.Errorf("cross-site form post answered %d", status)
}
if _, body := a.get("/"); !feedAddress.MatchString(body) {
t.Error("a cross-site request revoked the address")
}
stranger := &http.Client{CheckRedirect: func(*http.Request, []*http.Request) error { return http.ErrUseLastResponse }}
if status, _ := a.do(stranger, http.MethodPost, "/link", url.Values{"action": {"revoke"}}, nil); status != http.StatusSeeOther {
t.Errorf("anonymous post answered %d", status)
}
if status, _ := a.do(stranger, http.MethodGet, "/callback?oauth_token=request-token-1&oauth_verifier=x", nil, nil); status != http.StatusBadRequest {
t.Errorf("callback without a started sign-in answered %d", status)
}
}