90 lines
2.5 KiB
Go
90 lines
2.5 KiB
Go
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package server
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import (
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"context"
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firebase "firebase.google.com/go"
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"firebase.google.com/go/messaging"
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"fmt"
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"google.golang.org/api/option"
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"heckel.io/ntfy/auth"
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"strings"
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)
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type firebaseSender func(m *messaging.Message) error
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func createFirebaseSender(conf *Config) (firebaseSender, error) {
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fb, err := firebase.NewApp(context.Background(), nil, option.WithCredentialsFile(conf.FirebaseKeyFile))
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if err != nil {
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return nil, err
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}
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msg, err := fb.Messaging(context.Background())
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if err != nil {
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return nil, err
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}
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return func(m *messaging.Message) error {
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_, err := msg.Send(context.Background(), m)
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return err
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}, nil
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}
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func createFirebaseSubscriber(auther auth.Auther, sender firebaseSender) (subscriber, error) {
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return func(m *message) error {
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var data map[string]string // Mostly matches https://ntfy.sh/docs/subscribe/api/#json-message-format
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switch m.Event {
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case keepaliveEvent, openEvent:
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data = map[string]string{
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"id": m.ID,
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"time": fmt.Sprintf("%d", m.Time),
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"event": m.Event,
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"topic": m.Topic,
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}
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case messageEvent:
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allowForward := true
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if auther != nil {
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allowForward = auther.Authorize(nil, m.Topic, auth.PermissionRead) == nil
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}
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if allowForward {
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data = map[string]string{
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"id": m.ID,
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"time": fmt.Sprintf("%d", m.Time),
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"event": m.Event,
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"topic": m.Topic,
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"priority": fmt.Sprintf("%d", m.Priority),
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"tags": strings.Join(m.Tags, ","),
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"click": m.Click,
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"title": m.Title,
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"message": m.Message,
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"encoding": m.Encoding,
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}
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if m.Attachment != nil {
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data["attachment_name"] = m.Attachment.Name
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data["attachment_type"] = m.Attachment.Type
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data["attachment_size"] = fmt.Sprintf("%d", m.Attachment.Size)
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data["attachment_expires"] = fmt.Sprintf("%d", m.Attachment.Expires)
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data["attachment_url"] = m.Attachment.URL
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}
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} else {
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// If anonymous read for a topic is not allowed, we cannot send the message along
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// via Firebase. Instead, we send a "poll_request" message, asking the client to poll.
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data = map[string]string{
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"id": m.ID,
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"time": fmt.Sprintf("%d", m.Time),
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"event": pollRequestEvent,
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"topic": m.Topic,
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}
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}
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}
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var androidConfig *messaging.AndroidConfig
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if m.Priority >= 4 {
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androidConfig = &messaging.AndroidConfig{
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Priority: "high",
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}
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}
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return sender(maybeTruncateFCMMessage(&messaging.Message{
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Topic: m.Topic,
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Data: data,
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Android: androidConfig,
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}))
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}, nil
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}
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