notnite.com
1package state
2
3import (
4 "context"
5 "crypto/hmac"
6 "crypto/sha256"
7 "encoding/hex"
8 "fmt"
9 "log"
10 "log/slog"
11 "net/http"
12 "strings"
13 "time"
14
15 comatproto "github.com/bluesky-social/indigo/api/atproto"
16 "github.com/bluesky-social/indigo/atproto/syntax"
17 lexutil "github.com/bluesky-social/indigo/lex/util"
18 securejoin "github.com/cyphar/filepath-securejoin"
19 "github.com/go-chi/chi/v5"
20 tangled "tangled.sh/tangled.sh/core/api/tangled"
21 "tangled.sh/tangled.sh/core/appview"
22 "tangled.sh/tangled.sh/core/appview/auth"
23 "tangled.sh/tangled.sh/core/appview/db"
24 "tangled.sh/tangled.sh/core/appview/pages"
25 "tangled.sh/tangled.sh/core/jetstream"
26 "tangled.sh/tangled.sh/core/rbac"
27)
28
29type State struct {
30 db *db.DB
31 auth *auth.Auth
32 enforcer *rbac.Enforcer
33 tidClock *syntax.TIDClock
34 pages *pages.Pages
35 resolver *appview.Resolver
36 jc *jetstream.JetstreamClient
37 config *appview.Config
38}
39
40func Make(config *appview.Config) (*State, error) {
41 d, err := db.Make(config.DbPath)
42 if err != nil {
43 return nil, err
44 }
45
46 auth, err := auth.Make(config.CookieSecret)
47 if err != nil {
48 return nil, err
49 }
50
51 enforcer, err := rbac.NewEnforcer(config.DbPath)
52 if err != nil {
53 return nil, err
54 }
55
56 clock := syntax.NewTIDClock(0)
57
58 pgs := pages.NewPages()
59
60 resolver := appview.NewResolver()
61
62 wrapper := db.DbWrapper{d}
63 jc, err := jetstream.NewJetstreamClient(
64 config.JetstreamEndpoint,
65 "appview",
66 []string{tangled.GraphFollowNSID, tangled.FeedStarNSID},
67 nil,
68 slog.Default(),
69 wrapper,
70 false,
71 )
72 if err != nil {
73 return nil, fmt.Errorf("failed to create jetstream client: %w", err)
74 }
75 err = jc.StartJetstream(context.Background(), jetstreamIngester(wrapper))
76 if err != nil {
77 return nil, fmt.Errorf("failed to start jetstream watcher: %w", err)
78 }
79
80 state := &State{
81 d,
82 auth,
83 enforcer,
84 clock,
85 pgs,
86 resolver,
87 jc,
88 config,
89 }
90
91 return state, nil
92}
93
94func (s *State) TID() string {
95 return s.tidClock.Next().String()
96}
97
98func (s *State) Login(w http.ResponseWriter, r *http.Request) {
99 ctx := r.Context()
100
101 switch r.Method {
102 case http.MethodGet:
103 err := s.pages.Login(w, pages.LoginParams{})
104 if err != nil {
105 log.Printf("rendering login page: %s", err)
106 }
107
108 return
109 case http.MethodPost:
110 handle := strings.TrimPrefix(r.FormValue("handle"), "@")
111 appPassword := r.FormValue("app_password")
112
113 resolved, err := s.resolver.ResolveIdent(ctx, handle)
114 if err != nil {
115 log.Println("failed to resolve handle:", err)
116 s.pages.Notice(w, "login-msg", fmt.Sprintf("\"%s\" is an invalid handle.", handle))
117 return
118 }
119
120 atSession, err := s.auth.CreateInitialSession(ctx, resolved, appPassword)
121 if err != nil {
122 s.pages.Notice(w, "login-msg", "Invalid handle or password.")
123 return
124 }
125 sessionish := auth.CreateSessionWrapper{ServerCreateSession_Output: atSession}
126
127 err = s.auth.StoreSession(r, w, &sessionish, resolved.PDSEndpoint())
128 if err != nil {
129 s.pages.Notice(w, "login-msg", "Failed to login, try again later.")
130 return
131 }
132
133 log.Printf("successfully saved session for %s (%s)", atSession.Handle, atSession.Did)
134
135 did := resolved.DID.String()
136 defaultKnot := "knot1.tangled.sh"
137
138 go func() {
139 log.Printf("adding %s to default knot", did)
140 err = s.enforcer.AddMember(defaultKnot, did)
141 if err != nil {
142 log.Println("failed to add user to knot1.tangled.sh: ", err)
143 return
144 }
145 err = s.enforcer.E.SavePolicy()
146 if err != nil {
147 log.Println("failed to add user to knot1.tangled.sh: ", err)
148 return
149 }
150
151 secret, err := db.GetRegistrationKey(s.db, defaultKnot)
152 if err != nil {
153 log.Println("failed to get registration key for knot1.tangled.sh")
154 return
155 }
156 signedClient, err := NewSignedClient(defaultKnot, secret, s.config.Dev)
157 resp, err := signedClient.AddMember(did)
158 if err != nil {
159 log.Println("failed to add user to knot1.tangled.sh: ", err)
160 return
161 }
162
163 if resp.StatusCode != http.StatusNoContent {
164 log.Println("failed to add user to knot1.tangled.sh: ", resp.StatusCode)
165 return
166 }
167 }()
168
169 s.pages.HxRedirect(w, "/")
170 return
171 }
172}
173
174func (s *State) Logout(w http.ResponseWriter, r *http.Request) {
175 s.auth.ClearSession(r, w)
176 w.Header().Set("HX-Redirect", "/login")
177 w.WriteHeader(http.StatusSeeOther)
178}
179
180func (s *State) Timeline(w http.ResponseWriter, r *http.Request) {
181 user := s.auth.GetUser(r)
182
183 timeline, err := db.MakeTimeline(s.db)
184 if err != nil {
185 log.Println(err)
186 s.pages.Notice(w, "timeline", "Uh oh! Failed to load timeline.")
187 }
188
189 var didsToResolve []string
190 for _, ev := range timeline {
191 if ev.Repo != nil {
192 didsToResolve = append(didsToResolve, ev.Repo.Did)
193 if ev.Source != nil {
194 didsToResolve = append(didsToResolve, ev.Source.Did)
195 }
196 }
197 if ev.Follow != nil {
198 didsToResolve = append(didsToResolve, ev.Follow.UserDid, ev.Follow.SubjectDid)
199 }
200 if ev.Star != nil {
201 didsToResolve = append(didsToResolve, ev.Star.StarredByDid, ev.Star.Repo.Did)
202 }
203 }
204
205 resolvedIds := s.resolver.ResolveIdents(r.Context(), didsToResolve)
206 didHandleMap := make(map[string]string)
207 for _, identity := range resolvedIds {
208 if !identity.Handle.IsInvalidHandle() {
209 didHandleMap[identity.DID.String()] = fmt.Sprintf("@%s", identity.Handle.String())
210 } else {
211 didHandleMap[identity.DID.String()] = identity.DID.String()
212 }
213 }
214
215 s.pages.Timeline(w, pages.TimelineParams{
216 LoggedInUser: user,
217 Timeline: timeline,
218 DidHandleMap: didHandleMap,
219 })
220
221 return
222}
223
224// requires auth
225func (s *State) RegistrationKey(w http.ResponseWriter, r *http.Request) {
226 switch r.Method {
227 case http.MethodGet:
228 // list open registrations under this did
229
230 return
231 case http.MethodPost:
232 session, err := s.auth.Store.Get(r, appview.SessionName)
233 if err != nil || session.IsNew {
234 log.Println("unauthorized attempt to generate registration key")
235 http.Error(w, "Forbidden", http.StatusUnauthorized)
236 return
237 }
238
239 did := session.Values[appview.SessionDid].(string)
240
241 // check if domain is valid url, and strip extra bits down to just host
242 domain := r.FormValue("domain")
243 if domain == "" {
244 http.Error(w, "Invalid form", http.StatusBadRequest)
245 return
246 }
247
248 key, err := db.GenerateRegistrationKey(s.db, domain, did)
249
250 if err != nil {
251 log.Println(err)
252 http.Error(w, "unable to register this domain", http.StatusNotAcceptable)
253 return
254 }
255
256 w.Write([]byte(key))
257 }
258}
259
260func (s *State) Keys(w http.ResponseWriter, r *http.Request) {
261 user := chi.URLParam(r, "user")
262 user = strings.TrimPrefix(user, "@")
263
264 if user == "" {
265 w.WriteHeader(http.StatusBadRequest)
266 return
267 }
268
269 id, err := s.resolver.ResolveIdent(r.Context(), user)
270 if err != nil {
271 w.WriteHeader(http.StatusInternalServerError)
272 return
273 }
274
275 pubKeys, err := db.GetPublicKeys(s.db, id.DID.String())
276 if err != nil {
277 w.WriteHeader(http.StatusNotFound)
278 return
279 }
280
281 if len(pubKeys) == 0 {
282 w.WriteHeader(http.StatusNotFound)
283 return
284 }
285
286 for _, k := range pubKeys {
287 key := strings.TrimRight(k.Key, "\n")
288 w.Write([]byte(fmt.Sprintln(key)))
289 }
290}
291
292// create a signed request and check if a node responds to that
293func (s *State) InitKnotServer(w http.ResponseWriter, r *http.Request) {
294 user := s.auth.GetUser(r)
295
296 domain := chi.URLParam(r, "domain")
297 if domain == "" {
298 http.Error(w, "malformed url", http.StatusBadRequest)
299 return
300 }
301 log.Println("checking ", domain)
302
303 secret, err := db.GetRegistrationKey(s.db, domain)
304 if err != nil {
305 log.Printf("no key found for domain %s: %s\n", domain, err)
306 return
307 }
308
309 client, err := NewSignedClient(domain, secret, s.config.Dev)
310 if err != nil {
311 log.Println("failed to create client to ", domain)
312 }
313
314 resp, err := client.Init(user.Did)
315 if err != nil {
316 w.Write([]byte("no dice"))
317 log.Println("domain was unreachable after 5 seconds")
318 return
319 }
320
321 if resp.StatusCode == http.StatusConflict {
322 log.Println("status conflict", resp.StatusCode)
323 w.Write([]byte("already registered, sorry!"))
324 return
325 }
326
327 if resp.StatusCode != http.StatusNoContent {
328 log.Println("status nok", resp.StatusCode)
329 w.Write([]byte("no dice"))
330 return
331 }
332
333 // verify response mac
334 signature := resp.Header.Get("X-Signature")
335 signatureBytes, err := hex.DecodeString(signature)
336 if err != nil {
337 return
338 }
339
340 expectedMac := hmac.New(sha256.New, []byte(secret))
341 expectedMac.Write([]byte("ok"))
342
343 if !hmac.Equal(expectedMac.Sum(nil), signatureBytes) {
344 log.Printf("response body signature mismatch: %x\n", signatureBytes)
345 return
346 }
347
348 tx, err := s.db.BeginTx(r.Context(), nil)
349 if err != nil {
350 log.Println("failed to start tx", err)
351 http.Error(w, err.Error(), http.StatusInternalServerError)
352 return
353 }
354 defer func() {
355 tx.Rollback()
356 err = s.enforcer.E.LoadPolicy()
357 if err != nil {
358 log.Println("failed to rollback policies")
359 }
360 }()
361
362 // mark as registered
363 err = db.Register(tx, domain)
364 if err != nil {
365 log.Println("failed to register domain", err)
366 http.Error(w, err.Error(), http.StatusInternalServerError)
367 return
368 }
369
370 // set permissions for this did as owner
371 reg, err := db.RegistrationByDomain(tx, domain)
372 if err != nil {
373 log.Println("failed to register domain", err)
374 http.Error(w, err.Error(), http.StatusInternalServerError)
375 return
376 }
377
378 // add basic acls for this domain
379 err = s.enforcer.AddDomain(domain)
380 if err != nil {
381 log.Println("failed to setup owner of domain", err)
382 http.Error(w, err.Error(), http.StatusInternalServerError)
383 return
384 }
385
386 // add this did as owner of this domain
387 err = s.enforcer.AddOwner(domain, reg.ByDid)
388 if err != nil {
389 log.Println("failed to setup owner of domain", err)
390 http.Error(w, err.Error(), http.StatusInternalServerError)
391 return
392 }
393
394 err = tx.Commit()
395 if err != nil {
396 log.Println("failed to commit changes", err)
397 http.Error(w, err.Error(), http.StatusInternalServerError)
398 return
399 }
400
401 err = s.enforcer.E.SavePolicy()
402 if err != nil {
403 log.Println("failed to update ACLs", err)
404 http.Error(w, err.Error(), http.StatusInternalServerError)
405 return
406 }
407
408 w.Write([]byte("check success"))
409}
410
411func (s *State) KnotServerInfo(w http.ResponseWriter, r *http.Request) {
412 domain := chi.URLParam(r, "domain")
413 if domain == "" {
414 http.Error(w, "malformed url", http.StatusBadRequest)
415 return
416 }
417
418 user := s.auth.GetUser(r)
419 reg, err := db.RegistrationByDomain(s.db, domain)
420 if err != nil {
421 w.Write([]byte("failed to pull up registration info"))
422 return
423 }
424
425 var members []string
426 if reg.Registered != nil {
427 members, err = s.enforcer.GetUserByRole("server:member", domain)
428 if err != nil {
429 w.Write([]byte("failed to fetch member list"))
430 return
431 }
432 }
433
434 var didsToResolve []string
435 for _, m := range members {
436 didsToResolve = append(didsToResolve, m)
437 }
438 didsToResolve = append(didsToResolve, reg.ByDid)
439 resolvedIds := s.resolver.ResolveIdents(r.Context(), didsToResolve)
440 didHandleMap := make(map[string]string)
441 for _, identity := range resolvedIds {
442 if !identity.Handle.IsInvalidHandle() {
443 didHandleMap[identity.DID.String()] = fmt.Sprintf("@%s", identity.Handle.String())
444 } else {
445 didHandleMap[identity.DID.String()] = identity.DID.String()
446 }
447 }
448
449 ok, err := s.enforcer.IsServerOwner(user.Did, domain)
450 isOwner := err == nil && ok
451
452 p := pages.KnotParams{
453 LoggedInUser: user,
454 DidHandleMap: didHandleMap,
455 Registration: reg,
456 Members: members,
457 IsOwner: isOwner,
458 }
459
460 s.pages.Knot(w, p)
461}
462
463// get knots registered by this user
464func (s *State) Knots(w http.ResponseWriter, r *http.Request) {
465 // for now, this is just pubkeys
466 user := s.auth.GetUser(r)
467 registrations, err := db.RegistrationsByDid(s.db, user.Did)
468 if err != nil {
469 log.Println(err)
470 }
471
472 s.pages.Knots(w, pages.KnotsParams{
473 LoggedInUser: user,
474 Registrations: registrations,
475 })
476}
477
478// list members of domain, requires auth and requires owner status
479func (s *State) ListMembers(w http.ResponseWriter, r *http.Request) {
480 domain := chi.URLParam(r, "domain")
481 if domain == "" {
482 http.Error(w, "malformed url", http.StatusBadRequest)
483 return
484 }
485
486 // list all members for this domain
487 memberDids, err := s.enforcer.GetUserByRole("server:member", domain)
488 if err != nil {
489 w.Write([]byte("failed to fetch member list"))
490 return
491 }
492
493 w.Write([]byte(strings.Join(memberDids, "\n")))
494 return
495}
496
497// add member to domain, requires auth and requires invite access
498func (s *State) AddMember(w http.ResponseWriter, r *http.Request) {
499 domain := chi.URLParam(r, "domain")
500 if domain == "" {
501 http.Error(w, "malformed url", http.StatusBadRequest)
502 return
503 }
504
505 memberDid := r.FormValue("member")
506 if memberDid == "" {
507 http.Error(w, "malformed form", http.StatusBadRequest)
508 return
509 }
510
511 memberIdent, err := s.resolver.ResolveIdent(r.Context(), memberDid)
512 if err != nil {
513 w.Write([]byte("failed to resolve member did to a handle"))
514 return
515 }
516 log.Printf("adding %s to %s\n", memberIdent.Handle.String(), domain)
517
518 // announce this relation into the firehose, store into owners' pds
519 client, _ := s.auth.AuthorizedClient(r)
520 currentUser := s.auth.GetUser(r)
521 addedAt := time.Now().Format(time.RFC3339)
522 resp, err := comatproto.RepoPutRecord(r.Context(), client, &comatproto.RepoPutRecord_Input{
523 Collection: tangled.KnotMemberNSID,
524 Repo: currentUser.Did,
525 Rkey: s.TID(),
526 Record: &lexutil.LexiconTypeDecoder{
527 Val: &tangled.KnotMember{
528 Member: memberIdent.DID.String(),
529 Domain: domain,
530 AddedAt: &addedAt,
531 }},
532 })
533
534 // invalid record
535 if err != nil {
536 log.Printf("failed to create record: %s", err)
537 return
538 }
539 log.Println("created atproto record: ", resp.Uri)
540
541 secret, err := db.GetRegistrationKey(s.db, domain)
542 if err != nil {
543 log.Printf("no key found for domain %s: %s\n", domain, err)
544 return
545 }
546
547 ksClient, err := NewSignedClient(domain, secret, s.config.Dev)
548 if err != nil {
549 log.Println("failed to create client to ", domain)
550 return
551 }
552
553 ksResp, err := ksClient.AddMember(memberIdent.DID.String())
554 if err != nil {
555 log.Printf("failed to make request to %s: %s", domain, err)
556 return
557 }
558
559 if ksResp.StatusCode != http.StatusNoContent {
560 w.Write([]byte(fmt.Sprint("knotserver failed to add member: ", err)))
561 return
562 }
563
564 err = s.enforcer.AddMember(domain, memberIdent.DID.String())
565 if err != nil {
566 w.Write([]byte(fmt.Sprint("failed to add member: ", err)))
567 return
568 }
569
570 w.Write([]byte(fmt.Sprint("added member: ", memberIdent.Handle.String())))
571}
572
573func (s *State) RemoveMember(w http.ResponseWriter, r *http.Request) {
574}
575
576func (s *State) NewRepo(w http.ResponseWriter, r *http.Request) {
577 switch r.Method {
578 case http.MethodGet:
579 user := s.auth.GetUser(r)
580 knots, err := s.enforcer.GetDomainsForUser(user.Did)
581 if err != nil {
582 s.pages.Notice(w, "repo", "Invalid user account.")
583 return
584 }
585
586 s.pages.NewRepo(w, pages.NewRepoParams{
587 LoggedInUser: user,
588 Knots: knots,
589 })
590
591 case http.MethodPost:
592 user := s.auth.GetUser(r)
593
594 domain := r.FormValue("domain")
595 if domain == "" {
596 s.pages.Notice(w, "repo", "Invalid form submission—missing knot domain.")
597 return
598 }
599
600 repoName := r.FormValue("name")
601 if repoName == "" {
602 s.pages.Notice(w, "repo", "Repository name cannot be empty.")
603 return
604 }
605
606 // Check for valid repository name (GitHub-like rules)
607 // No spaces, only alphanumeric characters, dashes, and underscores
608 for _, char := range repoName {
609 if !((char >= 'a' && char <= 'z') ||
610 (char >= 'A' && char <= 'Z') ||
611 (char >= '0' && char <= '9') ||
612 char == '-' || char == '_' || char == '.') {
613 s.pages.Notice(w, "repo", "Repository name can only contain alphanumeric characters, periods, hyphens, and underscores.")
614 return
615 }
616 }
617
618 defaultBranch := r.FormValue("branch")
619 if defaultBranch == "" {
620 defaultBranch = "main"
621 }
622
623 description := r.FormValue("description")
624
625 ok, err := s.enforcer.E.Enforce(user.Did, domain, domain, "repo:create")
626 if err != nil || !ok {
627 s.pages.Notice(w, "repo", "You do not have permission to create a repo in this knot.")
628 return
629 }
630
631 existingRepo, err := db.GetRepo(s.db, user.Did, repoName)
632 if err == nil && existingRepo != nil {
633 s.pages.Notice(w, "repo", fmt.Sprintf("A repo by this name already exists on %s", existingRepo.Knot))
634 return
635 }
636
637 secret, err := db.GetRegistrationKey(s.db, domain)
638 if err != nil {
639 s.pages.Notice(w, "repo", fmt.Sprintf("No registration key found for knot %s.", domain))
640 return
641 }
642
643 client, err := NewSignedClient(domain, secret, s.config.Dev)
644 if err != nil {
645 s.pages.Notice(w, "repo", "Failed to connect to knot server.")
646 return
647 }
648
649 rkey := s.TID()
650 repo := &db.Repo{
651 Did: user.Did,
652 Name: repoName,
653 Knot: domain,
654 Rkey: rkey,
655 Description: description,
656 }
657
658 xrpcClient, _ := s.auth.AuthorizedClient(r)
659
660 addedAt := time.Now().Format(time.RFC3339)
661 atresp, err := comatproto.RepoPutRecord(r.Context(), xrpcClient, &comatproto.RepoPutRecord_Input{
662 Collection: tangled.RepoNSID,
663 Repo: user.Did,
664 Rkey: rkey,
665 Record: &lexutil.LexiconTypeDecoder{
666 Val: &tangled.Repo{
667 Knot: repo.Knot,
668 Name: repoName,
669 AddedAt: &addedAt,
670 Owner: user.Did,
671 }},
672 })
673 if err != nil {
674 log.Printf("failed to create record: %s", err)
675 s.pages.Notice(w, "repo", "Failed to announce repository creation.")
676 return
677 }
678 log.Println("created repo record: ", atresp.Uri)
679
680 tx, err := s.db.BeginTx(r.Context(), nil)
681 if err != nil {
682 log.Println(err)
683 s.pages.Notice(w, "repo", "Failed to save repository information.")
684 return
685 }
686 defer func() {
687 tx.Rollback()
688 err = s.enforcer.E.LoadPolicy()
689 if err != nil {
690 log.Println("failed to rollback policies")
691 }
692 }()
693
694 resp, err := client.NewRepo(user.Did, repoName, defaultBranch)
695 if err != nil {
696 s.pages.Notice(w, "repo", "Failed to create repository on knot server.")
697 return
698 }
699
700 switch resp.StatusCode {
701 case http.StatusConflict:
702 s.pages.Notice(w, "repo", "A repository with that name already exists.")
703 return
704 case http.StatusInternalServerError:
705 s.pages.Notice(w, "repo", "Failed to create repository on knot. Try again later.")
706 case http.StatusNoContent:
707 // continue
708 }
709
710 repo.AtUri = atresp.Uri
711 err = db.AddRepo(tx, repo)
712 if err != nil {
713 log.Println(err)
714 s.pages.Notice(w, "repo", "Failed to save repository information.")
715 return
716 }
717
718 // acls
719 p, _ := securejoin.SecureJoin(user.Did, repoName)
720 err = s.enforcer.AddRepo(user.Did, domain, p)
721 if err != nil {
722 log.Println(err)
723 s.pages.Notice(w, "repo", "Failed to set up repository permissions.")
724 return
725 }
726
727 err = tx.Commit()
728 if err != nil {
729 log.Println("failed to commit changes", err)
730 http.Error(w, err.Error(), http.StatusInternalServerError)
731 return
732 }
733
734 err = s.enforcer.E.SavePolicy()
735 if err != nil {
736 log.Println("failed to update ACLs", err)
737 http.Error(w, err.Error(), http.StatusInternalServerError)
738 return
739 }
740
741 s.pages.HxLocation(w, fmt.Sprintf("/@%s/%s", user.Handle, repoName))
742 return
743 }
744}
745
746func GetAvatarUri(handle string) (string, error) {
747 return fmt.Sprintf("https://avatars.dog/%s@webp", handle), nil
748}