julien.rbrt.fr
forked from
tangled.org/core
Monorepo for Tangled — https://tangled.org
1package knotserver
2
3import (
4 "context"
5 "encoding/json"
6 "fmt"
7 "io"
8 "net/http"
9 "net/url"
10 "strings"
11
12 "github.com/bluesky-social/jetstream/pkg/models"
13 "github.com/sotangled/tangled/api/tangled"
14 "github.com/sotangled/tangled/knotserver/db"
15 "github.com/sotangled/tangled/log"
16)
17
18func (h *Handle) processPublicKey(ctx context.Context, did string, record tangled.PublicKey) error {
19 l := log.FromContext(ctx)
20 pk := db.PublicKey{
21 Did: did,
22 PublicKey: record,
23 }
24 if err := h.db.AddPublicKey(pk); err != nil {
25 l.Error("failed to add public key", "error", err)
26 return fmt.Errorf("failed to add public key: %w", err)
27 }
28 l.Info("added public key from firehose", "did", did)
29 return nil
30}
31
32func (h *Handle) processKnotMember(ctx context.Context, did string, record tangled.KnotMember) error {
33 l := log.FromContext(ctx)
34
35 if record.Domain != h.c.Server.Hostname {
36 l.Error("domain mismatch", "domain", record.Domain, "expected", h.c.Server.Hostname)
37 return fmt.Errorf("domain mismatch: %s != %s", record.Domain, h.c.Server.Hostname)
38 }
39
40 ok, err := h.e.E.Enforce(did, ThisServer, ThisServer, "server:invite")
41 if err != nil || !ok {
42 l.Error("failed to add member", "did", did)
43 return fmt.Errorf("failed to enforce permissions: %w", err)
44 }
45
46 l.Info("adding member")
47 if err := h.e.AddMember(ThisServer, record.Member); err != nil {
48 l.Error("failed to add member", "error", err)
49 return fmt.Errorf("failed to add member: %w", err)
50 }
51 l.Info("added member from firehose", "member", record.Member)
52
53 if err := h.db.AddDid(did); err != nil {
54 l.Error("failed to add did", "error", err)
55 return fmt.Errorf("failed to add did: %w", err)
56 }
57
58 if err := h.fetchAndAddKeys(ctx, did); err != nil {
59 return fmt.Errorf("failed to fetch and add keys: %w", err)
60 }
61
62 h.jc.UpdateDids([]string{did})
63 return nil
64}
65
66func (h *Handle) fetchAndAddKeys(ctx context.Context, did string) error {
67 l := log.FromContext(ctx)
68
69 keysEndpoint, err := url.JoinPath(h.c.AppViewEndpoint, "keys", did)
70 if err != nil {
71 l.Error("error building endpoint url", "did", did, "error", err.Error())
72 return fmt.Errorf("error building endpoint url: %w", err)
73 }
74
75 resp, err := http.Get(keysEndpoint)
76 if err != nil {
77 l.Error("error getting keys", "did", did, "error", err)
78 return fmt.Errorf("error getting keys: %w", err)
79 }
80 defer resp.Body.Close()
81
82 if resp.StatusCode == http.StatusNotFound {
83 l.Info("no keys found for did", "did", did)
84 return nil
85 }
86
87 plaintext, err := io.ReadAll(resp.Body)
88 if err != nil {
89 l.Error("error reading response body", "error", err)
90 return fmt.Errorf("error reading response body: %w", err)
91 }
92
93 for _, key := range strings.Split(string(plaintext), "\n") {
94 if key == "" {
95 continue
96 }
97 pk := db.PublicKey{
98 Did: did,
99 }
100 pk.Key = key
101 if err := h.db.AddPublicKey(pk); err != nil {
102 l.Error("failed to add public key", "error", err)
103 return fmt.Errorf("failed to add public key: %w", err)
104 }
105 }
106 return nil
107}
108
109func (h *Handle) processMessages(ctx context.Context, event *models.Event) error {
110 did := event.Did
111 if event.Kind != models.EventKindCommit {
112 return nil
113 }
114
115 raw := json.RawMessage(event.Commit.Record)
116
117 switch event.Commit.Collection {
118 case tangled.PublicKeyNSID:
119 var record tangled.PublicKey
120 if err := json.Unmarshal(raw, &record); err != nil {
121 return fmt.Errorf("failed to unmarshal record: %w", err)
122 }
123 if err := h.processPublicKey(ctx, did, record); err != nil {
124 return fmt.Errorf("failed to process public key: %w", err)
125 }
126
127 case tangled.KnotMemberNSID:
128 var record tangled.KnotMember
129 if err := json.Unmarshal(raw, &record); err != nil {
130 return fmt.Errorf("failed to unmarshal record: %w", err)
131 }
132 if err := h.processKnotMember(ctx, did, record); err != nil {
133 return fmt.Errorf("failed to process knot member: %w", err)
134 }
135 }
136
137 lastTimeUs := event.TimeUS
138 if err := h.db.SaveLastTimeUs(lastTimeUs); err != nil {
139 return fmt.Errorf("failed to save last time us: %w", err)
140 }
141
142 return nil
143}