julien.rbrt.fr
forked from
tangled.org/core
Monorepo for Tangled — https://tangled.org
1package state
2
3import (
4 "context"
5 "fmt"
6 "log"
7 "log/slog"
8 "net/http"
9 "strings"
10 "time"
11
12 comatproto "github.com/bluesky-social/indigo/api/atproto"
13 lexutil "github.com/bluesky-social/indigo/lex/util"
14 securejoin "github.com/cyphar/filepath-securejoin"
15 "github.com/go-chi/chi/v5"
16 "github.com/posthog/posthog-go"
17 "tangled.sh/tangled.sh/core/api/tangled"
18 "tangled.sh/tangled.sh/core/appview"
19 "tangled.sh/tangled.sh/core/appview/cache"
20 "tangled.sh/tangled.sh/core/appview/cache/session"
21 "tangled.sh/tangled.sh/core/appview/config"
22 "tangled.sh/tangled.sh/core/appview/db"
23 "tangled.sh/tangled.sh/core/appview/notify"
24 "tangled.sh/tangled.sh/core/appview/oauth"
25 "tangled.sh/tangled.sh/core/appview/pages"
26 posthogService "tangled.sh/tangled.sh/core/appview/posthog"
27 "tangled.sh/tangled.sh/core/appview/reporesolver"
28 "tangled.sh/tangled.sh/core/eventconsumer"
29 "tangled.sh/tangled.sh/core/idresolver"
30 "tangled.sh/tangled.sh/core/jetstream"
31 "tangled.sh/tangled.sh/core/knotclient"
32 tlog "tangled.sh/tangled.sh/core/log"
33 "tangled.sh/tangled.sh/core/rbac"
34 "tangled.sh/tangled.sh/core/tid"
35)
36
37type State struct {
38 db *db.DB
39 notifier notify.Notifier
40 oauth *oauth.OAuth
41 enforcer *rbac.Enforcer
42 pages *pages.Pages
43 sess *session.SessionStore
44 idResolver *idresolver.Resolver
45 posthog posthog.Client
46 jc *jetstream.JetstreamClient
47 config *config.Config
48 repoResolver *reporesolver.RepoResolver
49 knotstream *eventconsumer.Consumer
50 spindlestream *eventconsumer.Consumer
51}
52
53func Make(ctx context.Context, config *config.Config) (*State, error) {
54 d, err := db.Make(config.Core.DbPath)
55 if err != nil {
56 return nil, fmt.Errorf("failed to create db: %w", err)
57 }
58
59 enforcer, err := rbac.NewEnforcer(config.Core.DbPath)
60 if err != nil {
61 return nil, fmt.Errorf("failed to create enforcer: %w", err)
62 }
63
64 res, err := idresolver.RedisResolver(config.Redis.ToURL())
65 if err != nil {
66 log.Printf("failed to create redis resolver: %v", err)
67 res = idresolver.DefaultResolver()
68 }
69
70 pgs := pages.NewPages(config, res)
71
72 cache := cache.New(config.Redis.Addr)
73 sess := session.New(cache)
74
75 oauth := oauth.NewOAuth(config, sess)
76
77 posthog, err := posthog.NewWithConfig(config.Posthog.ApiKey, posthog.Config{Endpoint: config.Posthog.Endpoint})
78 if err != nil {
79 return nil, fmt.Errorf("failed to create posthog client: %w", err)
80 }
81
82 repoResolver := reporesolver.New(config, enforcer, res, d)
83
84 wrapper := db.DbWrapper{d}
85 jc, err := jetstream.NewJetstreamClient(
86 config.Jetstream.Endpoint,
87 "appview",
88 []string{
89 tangled.GraphFollowNSID,
90 tangled.FeedStarNSID,
91 tangled.PublicKeyNSID,
92 tangled.RepoArtifactNSID,
93 tangled.ActorProfileNSID,
94 tangled.SpindleMemberNSID,
95 tangled.SpindleNSID,
96 tangled.StringNSID,
97 },
98 nil,
99 slog.Default(),
100 wrapper,
101 false,
102
103 // in-memory filter is inapplicalble to appview so
104 // we'll never log dids anyway.
105 false,
106 )
107 if err != nil {
108 return nil, fmt.Errorf("failed to create jetstream client: %w", err)
109 }
110
111 ingester := appview.Ingester{
112 Db: wrapper,
113 Enforcer: enforcer,
114 IdResolver: res,
115 Config: config,
116 Logger: tlog.New("ingester"),
117 }
118 err = jc.StartJetstream(ctx, ingester.Ingest())
119 if err != nil {
120 return nil, fmt.Errorf("failed to start jetstream watcher: %w", err)
121 }
122
123 knotstream, err := Knotstream(ctx, config, d, enforcer, posthog)
124 if err != nil {
125 return nil, fmt.Errorf("failed to start knotstream consumer: %w", err)
126 }
127 knotstream.Start(ctx)
128
129 spindlestream, err := Spindlestream(ctx, config, d, enforcer)
130 if err != nil {
131 return nil, fmt.Errorf("failed to start spindlestream consumer: %w", err)
132 }
133 spindlestream.Start(ctx)
134
135 var notifiers []notify.Notifier
136 if !config.Core.Dev {
137 notifiers = append(notifiers, posthogService.NewPosthogNotifier(posthog))
138 }
139 notifier := notify.NewMergedNotifier(notifiers...)
140
141 state := &State{
142 d,
143 notifier,
144 oauth,
145 enforcer,
146 pgs,
147 sess,
148 res,
149 posthog,
150 jc,
151 config,
152 repoResolver,
153 knotstream,
154 spindlestream,
155 }
156
157 return state, nil
158}
159
160func (s *State) Favicon(w http.ResponseWriter, r *http.Request) {
161 w.Header().Set("Content-Type", "image/svg+xml")
162 w.Header().Set("Cache-Control", "public, max-age=31536000") // one year
163 w.Header().Set("ETag", `"favicon-svg-v1"`)
164
165 if match := r.Header.Get("If-None-Match"); match == `"favicon-svg-v1"` {
166 w.WriteHeader(http.StatusNotModified)
167 return
168 }
169
170 s.pages.Favicon(w)
171}
172
173func (s *State) TermsOfService(w http.ResponseWriter, r *http.Request) {
174 user := s.oauth.GetUser(r)
175 s.pages.TermsOfService(w, pages.TermsOfServiceParams{
176 LoggedInUser: user,
177 })
178}
179
180func (s *State) PrivacyPolicy(w http.ResponseWriter, r *http.Request) {
181 user := s.oauth.GetUser(r)
182 s.pages.PrivacyPolicy(w, pages.PrivacyPolicyParams{
183 LoggedInUser: user,
184 })
185}
186
187func (s *State) Timeline(w http.ResponseWriter, r *http.Request) {
188 user := s.oauth.GetUser(r)
189
190 timeline, err := db.MakeTimeline(s.db)
191 if err != nil {
192 log.Println(err)
193 s.pages.Notice(w, "timeline", "Uh oh! Failed to load timeline.")
194 }
195
196 s.pages.Timeline(w, pages.TimelineParams{
197 LoggedInUser: user,
198 Timeline: timeline,
199 })
200}
201
202func (s *State) Keys(w http.ResponseWriter, r *http.Request) {
203 user := chi.URLParam(r, "user")
204 user = strings.TrimPrefix(user, "@")
205
206 if user == "" {
207 w.WriteHeader(http.StatusBadRequest)
208 return
209 }
210
211 id, err := s.idResolver.ResolveIdent(r.Context(), user)
212 if err != nil {
213 w.WriteHeader(http.StatusInternalServerError)
214 return
215 }
216
217 pubKeys, err := db.GetPublicKeysForDid(s.db, id.DID.String())
218 if err != nil {
219 w.WriteHeader(http.StatusNotFound)
220 return
221 }
222
223 if len(pubKeys) == 0 {
224 w.WriteHeader(http.StatusNotFound)
225 return
226 }
227
228 for _, k := range pubKeys {
229 key := strings.TrimRight(k.Key, "\n")
230 w.Write([]byte(fmt.Sprintln(key)))
231 }
232}
233
234func validateRepoName(name string) error {
235 // check for path traversal attempts
236 if name == "." || name == ".." ||
237 strings.Contains(name, "/") || strings.Contains(name, "\\") {
238 return fmt.Errorf("Repository name contains invalid path characters")
239 }
240
241 // check for sequences that could be used for traversal when normalized
242 if strings.Contains(name, "./") || strings.Contains(name, "../") ||
243 strings.HasPrefix(name, ".") || strings.HasSuffix(name, ".") {
244 return fmt.Errorf("Repository name contains invalid path sequence")
245 }
246
247 // then continue with character validation
248 for _, char := range name {
249 if !((char >= 'a' && char <= 'z') ||
250 (char >= 'A' && char <= 'Z') ||
251 (char >= '0' && char <= '9') ||
252 char == '-' || char == '_' || char == '.') {
253 return fmt.Errorf("Repository name can only contain alphanumeric characters, periods, hyphens, and underscores")
254 }
255 }
256
257 // additional check to prevent multiple sequential dots
258 if strings.Contains(name, "..") {
259 return fmt.Errorf("Repository name cannot contain sequential dots")
260 }
261
262 // if all checks pass
263 return nil
264}
265
266func (s *State) NewRepo(w http.ResponseWriter, r *http.Request) {
267 switch r.Method {
268 case http.MethodGet:
269 user := s.oauth.GetUser(r)
270 knots, err := s.enforcer.GetKnotsForUser(user.Did)
271 if err != nil {
272 s.pages.Notice(w, "repo", "Invalid user account.")
273 return
274 }
275
276 s.pages.NewRepo(w, pages.NewRepoParams{
277 LoggedInUser: user,
278 Knots: knots,
279 })
280
281 case http.MethodPost:
282 user := s.oauth.GetUser(r)
283
284 domain := r.FormValue("domain")
285 if domain == "" {
286 s.pages.Notice(w, "repo", "Invalid form submission—missing knot domain.")
287 return
288 }
289
290 repoName := r.FormValue("name")
291 if repoName == "" {
292 s.pages.Notice(w, "repo", "Repository name cannot be empty.")
293 return
294 }
295
296 if err := validateRepoName(repoName); err != nil {
297 s.pages.Notice(w, "repo", err.Error())
298 return
299 }
300
301 defaultBranch := r.FormValue("branch")
302 if defaultBranch == "" {
303 defaultBranch = "main"
304 }
305
306 description := r.FormValue("description")
307
308 ok, err := s.enforcer.E.Enforce(user.Did, domain, domain, "repo:create")
309 if err != nil || !ok {
310 s.pages.Notice(w, "repo", "You do not have permission to create a repo in this knot.")
311 return
312 }
313
314 existingRepo, err := db.GetRepo(s.db, user.Did, repoName)
315 if err == nil && existingRepo != nil {
316 s.pages.Notice(w, "repo", fmt.Sprintf("A repo by this name already exists on %s", existingRepo.Knot))
317 return
318 }
319
320 secret, err := db.GetRegistrationKey(s.db, domain)
321 if err != nil {
322 s.pages.Notice(w, "repo", fmt.Sprintf("No registration key found for knot %s.", domain))
323 return
324 }
325
326 client, err := knotclient.NewSignedClient(domain, secret, s.config.Core.Dev)
327 if err != nil {
328 s.pages.Notice(w, "repo", "Failed to connect to knot server.")
329 return
330 }
331
332 rkey := tid.TID()
333 repo := &db.Repo{
334 Did: user.Did,
335 Name: repoName,
336 Knot: domain,
337 Rkey: rkey,
338 Description: description,
339 }
340
341 xrpcClient, err := s.oauth.AuthorizedClient(r)
342 if err != nil {
343 s.pages.Notice(w, "repo", "Failed to write record to PDS.")
344 return
345 }
346
347 createdAt := time.Now().Format(time.RFC3339)
348 atresp, err := xrpcClient.RepoPutRecord(r.Context(), &comatproto.RepoPutRecord_Input{
349 Collection: tangled.RepoNSID,
350 Repo: user.Did,
351 Rkey: rkey,
352 Record: &lexutil.LexiconTypeDecoder{
353 Val: &tangled.Repo{
354 Knot: repo.Knot,
355 Name: repoName,
356 CreatedAt: createdAt,
357 Owner: user.Did,
358 }},
359 })
360 if err != nil {
361 log.Printf("failed to create record: %s", err)
362 s.pages.Notice(w, "repo", "Failed to announce repository creation.")
363 return
364 }
365 log.Println("created repo record: ", atresp.Uri)
366
367 tx, err := s.db.BeginTx(r.Context(), nil)
368 if err != nil {
369 log.Println(err)
370 s.pages.Notice(w, "repo", "Failed to save repository information.")
371 return
372 }
373 defer func() {
374 tx.Rollback()
375 err = s.enforcer.E.LoadPolicy()
376 if err != nil {
377 log.Println("failed to rollback policies")
378 }
379 }()
380
381 resp, err := client.NewRepo(user.Did, repoName, defaultBranch)
382 if err != nil {
383 s.pages.Notice(w, "repo", "Failed to create repository on knot server.")
384 return
385 }
386
387 switch resp.StatusCode {
388 case http.StatusConflict:
389 s.pages.Notice(w, "repo", "A repository with that name already exists.")
390 return
391 case http.StatusInternalServerError:
392 s.pages.Notice(w, "repo", "Failed to create repository on knot. Try again later.")
393 case http.StatusNoContent:
394 // continue
395 }
396
397 repo.AtUri = atresp.Uri
398 err = db.AddRepo(tx, repo)
399 if err != nil {
400 log.Println(err)
401 s.pages.Notice(w, "repo", "Failed to save repository information.")
402 return
403 }
404
405 // acls
406 p, _ := securejoin.SecureJoin(user.Did, repoName)
407 err = s.enforcer.AddRepo(user.Did, domain, p)
408 if err != nil {
409 log.Println(err)
410 s.pages.Notice(w, "repo", "Failed to set up repository permissions.")
411 return
412 }
413
414 err = tx.Commit()
415 if err != nil {
416 log.Println("failed to commit changes", err)
417 http.Error(w, err.Error(), http.StatusInternalServerError)
418 return
419 }
420
421 err = s.enforcer.E.SavePolicy()
422 if err != nil {
423 log.Println("failed to update ACLs", err)
424 http.Error(w, err.Error(), http.StatusInternalServerError)
425 return
426 }
427
428 s.notifier.NewRepo(r.Context(), repo)
429
430 s.pages.HxLocation(w, fmt.Sprintf("/@%s/%s", user.Handle, repoName))
431 return
432 }
433}