| 1 | package calls |
| 2 | |
| 3 | import ( |
| 4 | "amadan.net/rastrillo/rastrillo/sessions" |
| 5 | "errors" |
| 6 | "html/template" |
| 7 | "net/http" |
| 8 | "net/url" |
| 9 | |
| 10 | "github.com/go-chi/chi/v5" |
| 11 | ) |
| 12 | |
| 13 | // followLink is GET /j/{token}: one 404 for unknown, revoked, ended or |
| 14 | // expired; otherwise one of three outcomes (spec §3.2). It is mounted |
| 15 | // outside the session group because the person is often not signed in. |
| 16 | func (a *app) followLink(w http.ResponseWriter, r *http.Request) { |
| 17 | link, m, live, err := a.store.liveLink(r.Context(), chi.URLParam(r, "token")) |
| 18 | if err != nil { |
| 19 | a.logger.Error("calls: follow link", "err", err) |
| 20 | a.ErrorPage(w, r, http.StatusInternalServerError, "") |
| 21 | return |
| 22 | } |
| 23 | if !live { |
| 24 | a.ErrorPage(w, r, http.StatusNotFound, "") |
| 25 | return |
| 26 | } |
| 27 | id, signedIn := a.auth.SessionFrom(r) |
| 28 | if !signedIn { |
| 29 | a.setJoinCookie(w, link.TokenHash) |
| 30 | if !m.RequireSignin { |
| 31 | a.guestPage(w, r, m, chi.URLParam(r, "token"), "", "") |
| 32 | return |
| 33 | } |
| 34 | http.Redirect(w, r, signinPath, http.StatusSeeOther) |
| 35 | return |
| 36 | } |
| 37 | p, err := a.personForSession(r.Context(), sessions.Session{Subject: id.Address, Method: string(id.Method), AuthTime: id.AuthTime, At: id.At}) |
| 38 | if errors.Is(err, errHomeIdentity) { |
| 39 | a.ErrorPage(w, r, http.StatusNotFound, "") |
| 40 | return |
| 41 | } |
| 42 | if err != nil { |
| 43 | a.logger.Error("calls: ensure person", "err", err) |
| 44 | a.ErrorPage(w, r, http.StatusInternalServerError, "") |
| 45 | return |
| 46 | } |
| 47 | if p.Anonymous && m.RequireSignin { |
| 48 | a.setJoinCookie(w, link.TokenHash) |
| 49 | http.Redirect(w, r, signinPath, 303) |
| 50 | return |
| 51 | } |
| 52 | if !a.isMember(p) { |
| 53 | // Via the link, not the meeting: this handler read the link |
| 54 | // before it resolved the person, and a member may have replaced |
| 55 | // it in between. The re-read happens inside the grant's own |
| 56 | // transaction, and a link that is no longer live gets the same |
| 57 | // 404 an unknown token gets (review C1-3). |
| 58 | _, live, err := a.store.mintGrantViaLink(r.Context(), link.ID, p.ID) |
| 59 | if err != nil { |
| 60 | a.logger.Error("calls: mint grant", "err", err) |
| 61 | a.ErrorPage(w, r, http.StatusInternalServerError, "") |
| 62 | return |
| 63 | } |
| 64 | if !live { |
| 65 | a.ErrorPage(w, r, http.StatusNotFound, "") |
| 66 | return |
| 67 | } |
| 68 | } |
| 69 | http.Redirect(w, r, "/m/"+m.Sqid+"/join", http.StatusSeeOther) |
| 70 | } |
| 71 | |
| 72 | // holding is GET /m/{sqid}/join, authorized by standing or a live |
| 73 | // participation for this session (spec §2.5), the same row the room |
| 74 | // page uses. |
| 75 | func (a *app) holding(w http.ResponseWriter, r *http.Request) { |
| 76 | m, p, st, ok := a.roomAccess(w, r) |
| 77 | if !ok { |
| 78 | return |
| 79 | } |
| 80 | // This session's own peer, if it already has one here — a second |
| 81 | // tab open on the same meeting — points the person at the takeover |
| 82 | // confirm page rather than a plain join that would collide with it. |
| 83 | var openElsewhere bool |
| 84 | if session, ok := a.sessionKey(r); ok { |
| 85 | _, openElsewhere = a.hub.LiveForSession(m.Sqid, session) |
| 86 | } |
| 87 | title := a.store.title(m) |
| 88 | render(w, "join", a.page(r, onMeeting("", title), map[string]any{ |
| 89 | "Sqid": m.Sqid, "Title": title, "Starts": a.fmtStart(m.StartsAt), |
| 90 | "Name": p.Name, "Standing": st.String(), "IsMember": st == StandingMember, |
| 91 | "Floor": !a.relayConfigured(), "OpenElsewhere": openElsewhere, |
| 92 | // Not oficina-calls://join?url=…/m/{sqid} (until 2026-10-02): the |
| 93 | // app has a session of its own, or none, and the meeting's |
| 94 | // address told it nothing about who this is, so a guest — and |
| 95 | // anyone whose default browser was not this one — could not get |
| 96 | // in. The offer hands this browser's person over (appOffer). |
| 97 | "AppHref": "/m/" + m.Sqid + "/app", |
| 98 | })) |
| 99 | } |
| 100 | |
| 101 | // Only app-constructed meeting URLs are promoted to the custom URL scheme. |
| 102 | func nativeJoinURL(meeting string) template.URL { |
| 103 | return template.URL("oficina-calls://join?url=" + url.QueryEscape(meeting)) |
| 104 | } |
| 105 | |
amadan