kot.pink
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, eventTime int64) 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 if err := h.e.AddMember(ThisServer, record.Member); err != nil {
47 l.Error("failed to add member", "error", err)
48 return fmt.Errorf("failed to add member: %w", err)
49 }
50 l.Info("added member from firehose", "member", record.Member)
51
52 if err := h.db.AddDid(did); err != nil {
53 l.Error("failed to add did", "error", err)
54 return fmt.Errorf("failed to add did: %w", err)
55 }
56
57 if err := h.fetchAndAddKeys(ctx, did); err != nil {
58 return fmt.Errorf("failed to fetch and add keys: %w", err)
59 }
60
61 lastTimeUs := eventTime + 1
62 fmt.Println("lastTimeUs", lastTimeUs)
63 if err := h.db.UpdateLastTimeUs(lastTimeUs); err != nil {
64 return fmt.Errorf("failed to save last time us: %w", err)
65 }
66 h.jc.UpdateDids([]string{did})
67 return nil
68}
69
70func (h *Handle) fetchAndAddKeys(ctx context.Context, did string) error {
71 l := log.FromContext(ctx)
72
73 keysEndpoint, err := url.JoinPath(h.c.AppViewEndpoint, "keys", did)
74 if err != nil {
75 l.Error("error building endpoint url", "did", did, "error", err.Error())
76 return fmt.Errorf("error building endpoint url: %w", err)
77 }
78
79 resp, err := http.Get(keysEndpoint)
80 if err != nil {
81 l.Error("error getting keys", "did", did, "error", err)
82 return fmt.Errorf("error getting keys: %w", err)
83 }
84 defer resp.Body.Close()
85
86 if resp.StatusCode == http.StatusNotFound {
87 l.Info("no keys found for did", "did", did)
88 return nil
89 }
90
91 plaintext, err := io.ReadAll(resp.Body)
92 if err != nil {
93 l.Error("error reading response body", "error", err)
94 return fmt.Errorf("error reading response body: %w", err)
95 }
96
97 for _, key := range strings.Split(string(plaintext), "\n") {
98 if key == "" {
99 continue
100 }
101 pk := db.PublicKey{
102 Did: did,
103 }
104 pk.Key = key
105 if err := h.db.AddPublicKey(pk); err != nil {
106 l.Error("failed to add public key", "error", err)
107 return fmt.Errorf("failed to add public key: %w", err)
108 }
109 }
110 return nil
111}
112
113func (h *Handle) processMessages(ctx context.Context, event *models.Event) error {
114 did := event.Did
115 if event.Kind != models.EventKindCommit {
116 return nil
117 }
118
119 raw := json.RawMessage(event.Commit.Record)
120
121 switch event.Commit.Collection {
122 case tangled.PublicKeyNSID:
123 var record tangled.PublicKey
124 if err := json.Unmarshal(raw, &record); err != nil {
125 return fmt.Errorf("failed to unmarshal record: %w", err)
126 }
127 if err := h.processPublicKey(ctx, did, record); err != nil {
128 return fmt.Errorf("failed to process public key: %w", err)
129 }
130
131 case tangled.KnotMemberNSID:
132 var record tangled.KnotMember
133 if err := json.Unmarshal(raw, &record); err != nil {
134 return fmt.Errorf("failed to unmarshal record: %w", err)
135 }
136 if err := h.processKnotMember(ctx, did, record, event.TimeUS); err != nil {
137 return fmt.Errorf("failed to process knot member: %w", err)
138 }
139 }
140
141 return nil
142}