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tangled.org
1package knotserver
2
3import (
4 "context"
5 "encoding/json"
6 "fmt"
7 "io"
8 "net/http"
9 "net/url"
10 "path/filepath"
11 "strings"
12
13 comatproto "github.com/bluesky-social/indigo/api/atproto"
14 "github.com/bluesky-social/indigo/atproto/syntax"
15 "github.com/bluesky-social/indigo/xrpc"
16 "github.com/bluesky-social/jetstream/pkg/models"
17 securejoin "github.com/cyphar/filepath-securejoin"
18 "tangled.sh/tangled.sh/core/api/tangled"
19 "tangled.sh/tangled.sh/core/idresolver"
20 "tangled.sh/tangled.sh/core/knotserver/db"
21 "tangled.sh/tangled.sh/core/knotserver/git"
22 "tangled.sh/tangled.sh/core/log"
23 "tangled.sh/tangled.sh/core/rbac"
24 "tangled.sh/tangled.sh/core/workflow"
25)
26
27func (h *Handle) processPublicKey(ctx context.Context, event *models.Event) error {
28 l := log.FromContext(ctx)
29 raw := json.RawMessage(event.Commit.Record)
30 did := event.Did
31
32 var record tangled.PublicKey
33 if err := json.Unmarshal(raw, &record); err != nil {
34 return fmt.Errorf("failed to unmarshal record: %w", err)
35 }
36
37 pk := db.PublicKey{
38 Did: did,
39 PublicKey: record,
40 }
41 if err := h.db.AddPublicKey(pk); err != nil {
42 l.Error("failed to add public key", "error", err)
43 return fmt.Errorf("failed to add public key: %w", err)
44 }
45 l.Info("added public key from firehose", "did", did)
46 return nil
47}
48
49func (h *Handle) processKnotMember(ctx context.Context, event *models.Event) error {
50 l := log.FromContext(ctx)
51 raw := json.RawMessage(event.Commit.Record)
52 did := event.Did
53
54 var record tangled.KnotMember
55 if err := json.Unmarshal(raw, &record); err != nil {
56 return fmt.Errorf("failed to unmarshal record: %w", err)
57 }
58
59 if record.Domain != h.c.Server.Hostname {
60 l.Error("domain mismatch", "domain", record.Domain, "expected", h.c.Server.Hostname)
61 return fmt.Errorf("domain mismatch: %s != %s", record.Domain, h.c.Server.Hostname)
62 }
63
64 ok, err := h.e.E.Enforce(did, rbac.ThisServer, rbac.ThisServer, "server:invite")
65 if err != nil || !ok {
66 l.Error("failed to add member", "did", did)
67 return fmt.Errorf("failed to enforce permissions: %w", err)
68 }
69
70 if err := h.e.AddKnotMember(rbac.ThisServer, record.Subject); err != nil {
71 l.Error("failed to add member", "error", err)
72 return fmt.Errorf("failed to add member: %w", err)
73 }
74 l.Info("added member from firehose", "member", record.Subject)
75
76 if err := h.db.AddDid(did); err != nil {
77 l.Error("failed to add did", "error", err)
78 return fmt.Errorf("failed to add did: %w", err)
79 }
80 h.jc.AddDid(did)
81
82 if err := h.fetchAndAddKeys(ctx, did); err != nil {
83 return fmt.Errorf("failed to fetch and add keys: %w", err)
84 }
85
86 return nil
87}
88
89func (h *Handle) processPull(ctx context.Context, event *models.Event) error {
90 raw := json.RawMessage(event.Commit.Record)
91 did := event.Did
92
93 var record tangled.RepoPull
94 if err := json.Unmarshal(raw, &record); err != nil {
95 return fmt.Errorf("failed to unmarshal record: %w", err)
96 }
97
98 l := log.FromContext(ctx)
99 l = l.With("handler", "processPull")
100 l = l.With("did", did)
101 l = l.With("target_repo", record.TargetRepo)
102 l = l.With("target_branch", record.TargetBranch)
103
104 if record.Source == nil {
105 return fmt.Errorf("ignoring pull record: not a branch-based pull request")
106 }
107
108 if record.Source.Repo != nil {
109 return fmt.Errorf("ignoring pull record: fork based pull")
110 }
111
112 repoAt, err := syntax.ParseATURI(record.TargetRepo)
113 if err != nil {
114 return fmt.Errorf("failed to parse ATURI: %w", err)
115 }
116
117 // resolve this aturi to extract the repo record
118 resolver := idresolver.DefaultResolver()
119 ident, err := resolver.ResolveIdent(ctx, repoAt.Authority().String())
120 if err != nil || ident.Handle.IsInvalidHandle() {
121 return fmt.Errorf("failed to resolve handle: %w", err)
122 }
123
124 xrpcc := xrpc.Client{
125 Host: ident.PDSEndpoint(),
126 }
127
128 resp, err := comatproto.RepoGetRecord(ctx, &xrpcc, "", tangled.RepoNSID, repoAt.Authority().String(), repoAt.RecordKey().String())
129 if err != nil {
130 return fmt.Errorf("failed to resolver repo: %w", err)
131 }
132
133 repo := resp.Value.Val.(*tangled.Repo)
134
135 if repo.Knot != h.c.Server.Hostname {
136 return fmt.Errorf("rejected pull record: not this knot, %s != %s", repo.Knot, h.c.Server.Hostname)
137 }
138
139 didSlashRepo, err := securejoin.SecureJoin(repo.Owner, repo.Name)
140 if err != nil {
141 return fmt.Errorf("failed to construct relative repo path: %w", err)
142 }
143
144 repoPath, err := securejoin.SecureJoin(h.c.Repo.ScanPath, didSlashRepo)
145 if err != nil {
146 return fmt.Errorf("failed to construct absolute repo path: %w", err)
147 }
148
149 gr, err := git.Open(repoPath, record.Source.Branch)
150 if err != nil {
151 return fmt.Errorf("failed to open git repository: %w", err)
152 }
153
154 workflowDir, err := gr.FileTree(ctx, workflow.WorkflowDir)
155 if err != nil {
156 return fmt.Errorf("failed to open workflow directory: %w", err)
157 }
158
159 var pipeline workflow.RawPipeline
160 for _, e := range workflowDir {
161 if !e.IsFile {
162 continue
163 }
164
165 fpath := filepath.Join(workflow.WorkflowDir, e.Name)
166 contents, err := gr.RawContent(fpath)
167 if err != nil {
168 continue
169 }
170
171 pipeline = append(pipeline, workflow.RawWorkflow{
172 Name: e.Name,
173 Contents: contents,
174 })
175 }
176
177 trigger := tangled.Pipeline_PullRequestTriggerData{
178 Action: "create",
179 SourceBranch: record.Source.Branch,
180 SourceSha: record.Source.Sha,
181 TargetBranch: record.TargetBranch,
182 }
183
184 compiler := workflow.Compiler{
185 Trigger: tangled.Pipeline_TriggerMetadata{
186 Kind: string(workflow.TriggerKindPullRequest),
187 PullRequest: &trigger,
188 Repo: &tangled.Pipeline_TriggerRepo{
189 Did: repo.Owner,
190 Knot: repo.Knot,
191 Repo: repo.Name,
192 },
193 },
194 }
195
196 cp := compiler.Compile(compiler.Parse(pipeline))
197 eventJson, err := json.Marshal(cp)
198 if err != nil {
199 return fmt.Errorf("failed to marshal pipeline event: %w", err)
200 }
201
202 // do not run empty pipelines
203 if cp.Workflows == nil {
204 return nil
205 }
206
207 ev := db.Event{
208 Rkey: TID(),
209 Nsid: tangled.PipelineNSID,
210 EventJson: string(eventJson),
211 }
212
213 return h.db.InsertEvent(ev, h.n)
214}
215
216// duplicated from add collaborator
217func (h *Handle) processCollaborator(ctx context.Context, event *models.Event) error {
218 raw := json.RawMessage(event.Commit.Record)
219 did := event.Did
220
221 var record tangled.RepoCollaborator
222 if err := json.Unmarshal(raw, &record); err != nil {
223 return fmt.Errorf("failed to unmarshal record: %w", err)
224 }
225
226 repoAt, err := syntax.ParseATURI(record.Repo)
227 if err != nil {
228 return err
229 }
230
231 resolver := idresolver.DefaultResolver()
232
233 subjectId, err := resolver.ResolveIdent(ctx, record.Subject)
234 if err != nil || subjectId.Handle.IsInvalidHandle() {
235 return err
236 }
237
238 // TODO: fix this for good, we need to fetch the record here unfortunately
239 // resolve this aturi to extract the repo record
240 owner, err := resolver.ResolveIdent(ctx, repoAt.Authority().String())
241 if err != nil || owner.Handle.IsInvalidHandle() {
242 return fmt.Errorf("failed to resolve handle: %w", err)
243 }
244
245 xrpcc := xrpc.Client{
246 Host: owner.PDSEndpoint(),
247 }
248
249 resp, err := comatproto.RepoGetRecord(ctx, &xrpcc, "", tangled.RepoNSID, repoAt.Authority().String(), repoAt.RecordKey().String())
250 if err != nil {
251 return err
252 }
253
254 repo := resp.Value.Val.(*tangled.Repo)
255 didSlashRepo, _ := securejoin.SecureJoin(owner.DID.String(), repo.Name)
256
257 // check perms for this user
258 if ok, err := h.e.IsCollaboratorInviteAllowed(did, rbac.ThisServer, didSlashRepo); !ok || err != nil {
259 return fmt.Errorf("insufficient permissions: %w", err)
260 }
261
262 if err := h.db.AddDid(subjectId.DID.String()); err != nil {
263 return err
264 }
265 h.jc.AddDid(subjectId.DID.String())
266
267 if err := h.e.AddCollaborator(subjectId.DID.String(), rbac.ThisServer, didSlashRepo); err != nil {
268 return err
269 }
270
271 return h.fetchAndAddKeys(ctx, subjectId.DID.String())
272}
273
274func (h *Handle) fetchAndAddKeys(ctx context.Context, did string) error {
275 l := log.FromContext(ctx)
276
277 keysEndpoint, err := url.JoinPath(h.c.AppViewEndpoint, "keys", did)
278 if err != nil {
279 l.Error("error building endpoint url", "did", did, "error", err.Error())
280 return fmt.Errorf("error building endpoint url: %w", err)
281 }
282
283 resp, err := http.Get(keysEndpoint)
284 if err != nil {
285 l.Error("error getting keys", "did", did, "error", err)
286 return fmt.Errorf("error getting keys: %w", err)
287 }
288 defer resp.Body.Close()
289
290 if resp.StatusCode == http.StatusNotFound {
291 l.Info("no keys found for did", "did", did)
292 return nil
293 }
294
295 plaintext, err := io.ReadAll(resp.Body)
296 if err != nil {
297 l.Error("error reading response body", "error", err)
298 return fmt.Errorf("error reading response body: %w", err)
299 }
300
301 for _, key := range strings.Split(string(plaintext), "\n") {
302 if key == "" {
303 continue
304 }
305 pk := db.PublicKey{
306 Did: did,
307 }
308 pk.Key = key
309 if err := h.db.AddPublicKey(pk); err != nil {
310 l.Error("failed to add public key", "error", err)
311 return fmt.Errorf("failed to add public key: %w", err)
312 }
313 }
314 return nil
315}
316
317func (h *Handle) processMessages(ctx context.Context, event *models.Event) error {
318 if event.Kind != models.EventKindCommit {
319 return nil
320 }
321
322 var err error
323 defer func() {
324 eventTime := event.TimeUS
325 lastTimeUs := eventTime + 1
326 if err := h.db.SaveLastTimeUs(lastTimeUs); err != nil {
327 err = fmt.Errorf("(deferred) failed to save last time us: %w", err)
328 }
329 }()
330
331 switch event.Commit.Collection {
332 case tangled.PublicKeyNSID:
333 err = h.processPublicKey(ctx, event)
334 case tangled.KnotMemberNSID:
335 err = h.processKnotMember(ctx, event)
336 case tangled.RepoPullNSID:
337 err = h.processPull(ctx, event)
338 case tangled.RepoCollaboratorNSID:
339 err = h.processCollaborator(ctx, event)
340 }
341
342 if err != nil {
343 h.l.Debug("failed to process event", "nsid", event.Commit.Collection, "err", err)
344 }
345
346 return nil
347}