| 1 | package records |
| 2 | |
| 3 | import ( |
| 4 | "context" |
| 5 | "encoding/json" |
| 6 | "errors" |
| 7 | "strings" |
| 8 | |
| 9 | "fiatjaf.com/nostr" |
| 10 | "fiatjaf.com/nostr/nip44" |
| 11 | "github.com/FelineStateMachine/tinyrelay/internal/event" |
| 12 | ) |
| 13 | |
| 14 | func (s *Service) notify(ctx context.Context, typ, owner, target string, now int64) error { |
| 15 | if !s.policy().Notify.Succession && (typ == "succession" || typ == "succession-transfer" ) { |
| 16 | return nil |
| 17 | } |
| 18 | content, _ := json.Marshal(map[string]string{"type" : typ, "target" : target}) |
| 19 | wrapped, err := s.giftWrap(owner, string(content), "relay" , now) |
| 20 | if err != nil { |
| 21 | return err |
| 22 | } |
| 23 | if s.deliverNotification != nil { |
| 24 | if err := s.deliverNotification(ctx, wrapped, target); err != nil { |
| 25 | return err |
| 26 | } |
| 27 | return s.push(ctx, target, typ, "relay" , "" ) |
| 28 | } |
| 29 | if s.onGenerated != nil { |
| 30 | return s.onGenerated(ctx, wrapped) |
| 31 | } |
| 32 | return err |
| 33 | } |
| 34 | |
| 35 | func (s *Service) push(ctx context.Context, recipient, kind, subject, text string) error { |
| 36 | if s.pushNotification == nil { |
| 37 | return nil |
| 38 | } |
| 39 | return s.pushNotification(ctx, recipient, kind, subject, text) |
| 40 | } |
| 41 | |
| 42 | // Notify applies notification preferences and emits a durable gift wrap. |
| 43 | func (s *Service) Notify(ctx context.Context, kind, text, subject, target string, now int64) error { |
| 44 | p := s.policy() |
| 45 | if kind != "test" { |
| 46 | enabled := map[string]bool{"reports" : p.Notify.Reports, "jobs" : p.Notify.Jobs, "succession" : p.Notify.Succession, "digest" : p.Notify.Digest}[kind] |
| 47 | if !enabled { |
| 48 | return nil |
| 49 | } |
| 50 | } |
| 51 | if target == "" { |
| 52 | target = p.Owner |
| 53 | } |
| 54 | return s.notifyText(ctx, kind, text, subject, target, now) |
| 55 | } |
| 56 | |
| 57 | func (s *Service) notifyText(ctx context.Context, kind, text, subject, target string, now int64) error { |
| 58 | if target == "" { |
| 59 | return errors.New("notify: empty recipient" ) |
| 60 | } |
| 61 | if s.deliverNotification == nil && s.onGenerated == nil { |
| 62 | return nil |
| 63 | } |
| 64 | wrapped, err := s.giftWrap(target, text, subject, now) |
| 65 | if err != nil { |
| 66 | return err |
| 67 | } |
| 68 | if s.deliverNotification != nil { |
| 69 | if err := s.deliverNotification(ctx, wrapped, target); err != nil { |
| 70 | return err |
| 71 | } |
| 72 | return s.push(ctx, target, kind, subject, text) |
| 73 | } |
| 74 | if s.onGenerated != nil { |
| 75 | return s.onGenerated(ctx, wrapped) |
| 76 | } |
| 77 | return nil |
| 78 | } |
| 79 | |
| 80 | // giftWrap creates the NIP-17 and NIP-59 records. |
| 81 | func (s *Service) giftWrap(recipient, content, subject string, now int64) (event.Event, error) { |
| 82 | rpk, err := nostr.PubKeyFromHex(recipient) |
| 83 | if err != nil { |
| 84 | return event.Event{}, err |
| 85 | } |
| 86 | sk, err := nostr.SecretKeyFromHex(s.secret) |
| 87 | if err != nil { |
| 88 | return event.Event{}, err |
| 89 | } |
| 90 | // Build the three NIP-59 records with the project's canonical event signer. |
| 91 | // This avoids the upstream nostr JSON encoder's unsafe fast path under -race. |
| 92 | tags := [][]string{{"p" , recipient}} |
| 93 | if subject != "" { |
| 94 | tags = append(tags, []string{"subject" , subject}) |
| 95 | } |
| 96 | rumor := event.Event{CreatedAt: now, Kind: event.KIND_DM, Tags: tags, Content: content} |
| 97 | if err := event.Sign(&rumor, s.secret); err != nil { |
| 98 | return event.Event{}, err |
| 99 | } |
| 100 | rumor.Sig = strings.Repeat("0" , 128) |
| 101 | rumorRaw, err := json.Marshal(rumor) |
| 102 | if err != nil { |
| 103 | return event.Event{}, err |
| 104 | } |
| 105 | key, err := nip44.GenerateConversationKey(rpk, sk) |
| 106 | if err != nil { |
| 107 | return event.Event{}, err |
| 108 | } |
| 109 | rumorCipher, err := nip44.Encrypt(string(rumorRaw), key) |
| 110 | if err != nil { |
| 111 | return event.Event{}, err |
| 112 | } |
| 113 | seal := event.Event{CreatedAt: now, Kind: 13, Tags: [][]string{}, Content: rumorCipher} |
| 114 | if err := event.Sign(&seal, s.secret); err != nil { |
| 115 | return event.Event{}, err |
| 116 | } |
| 117 | nonce := nostr.Generate() |
| 118 | outerKey, err := nip44.GenerateConversationKey(rpk, nonce) |
| 119 | if err != nil { |
| 120 | return event.Event{}, err |
| 121 | } |
| 122 | sealRaw, err := json.Marshal(seal) |
| 123 | if err != nil { |
| 124 | return event.Event{}, err |
| 125 | } |
| 126 | outerCipher, err := nip44.Encrypt(string(sealRaw), outerKey) |
| 127 | if err != nil { |
| 128 | return event.Event{}, err |
| 129 | } |
| 130 | wrapped := event.Event{CreatedAt: now, Kind: event.KIND_WRAP, Tags: [][]string{{"p" , recipient}}, Content: outerCipher} |
| 131 | if err := event.Sign(&wrapped, nonce.Hex()); err != nil { |
| 132 | return event.Event{}, err |
| 133 | } |
| 134 | return wrapped, nil |
| 135 | } |