ntfy/server/server_web_push.go
2023-06-07 21:09:13 +02:00

112 lines
3.7 KiB
Go

package server
import (
"encoding/json"
"fmt"
"net/http"
"github.com/SherClockHolmes/webpush-go"
"heckel.io/ntfy/log"
"heckel.io/ntfy/user"
)
func (s *Server) handleWebPushUpdate(w http.ResponseWriter, r *http.Request, v *visitor) error {
payload, err := readJSONWithLimit[webPushSubscriptionPayload](r.Body, jsonBodyBytesLimit, false)
if err != nil || payload.BrowserSubscription.Endpoint == "" || payload.BrowserSubscription.Keys.P256dh == "" || payload.BrowserSubscription.Keys.Auth == "" {
return errHTTPBadRequestWebPushSubscriptionInvalid
}
u := v.User()
topics, err := s.topicsFromIDs(payload.Topics...)
if err != nil {
return err
}
if s.userManager != nil {
for _, t := range topics {
if err := s.userManager.Authorize(u, t.ID, user.PermissionRead); err != nil {
logvr(v, r).With(t).Err(err).Debug("Access to topic %s not authorized", t.ID)
return errHTTPForbidden.With(t)
}
}
}
if err := s.webPush.UpdateSubscriptions(payload.Topics, v.MaybeUserID(), payload.BrowserSubscription); err != nil {
return err
}
return s.writeJSON(w, newSuccessResponse())
}
func (s *Server) publishToWebPushEndpoints(v *visitor, m *message) {
subscriptions, err := s.webPush.SubscriptionsForTopic(m.Topic)
if err != nil {
logvm(v, m).Err(err).Warn("Unable to publish web push messages")
return
}
for i, xi := range subscriptions {
go func(i int, sub webPushSubscription) {
ctx := log.Context{"endpoint": sub.BrowserSubscription.Endpoint, "username": sub.UserID, "topic": m.Topic, "message_id": m.ID}
s.sendWebPushNotification(newWebPushPayload(fmt.Sprintf("%s/%s", s.config.BaseURL, m.Topic), *m), &sub, &ctx)
}(i, xi)
}
}
func (s *Server) expireOrNotifyOldSubscriptions() {
subscriptions, err := s.webPush.ExpireAndGetExpiringSubscriptions(s.config.WebPushExpiryWarningDuration, s.config.WebPushExpiryDuration)
if err != nil {
log.Tag(tagWebPush).Err(err).Warn("Unable to publish expiry imminent warning")
return
}
for i, xi := range subscriptions {
go func(i int, sub webPushSubscription) {
ctx := log.Context{"endpoint": sub.BrowserSubscription.Endpoint}
s.sendWebPushNotification(newWebPushSubscriptionExpiringPayload(), &sub, &ctx)
}(i, xi)
}
log.Tag(tagWebPush).Debug("Expired old subscriptions and published %d expiry imminent warnings", len(subscriptions))
}
func (s *Server) sendWebPushNotification(payload any, sub *webPushSubscription, ctx *log.Context) {
jsonPayload, err := json.Marshal(payload)
if err != nil {
log.Tag(tagWebPush).Err(err).Fields(*ctx).Debug("Unable to publish web push message")
return
}
resp, err := webpush.SendNotification(jsonPayload, &sub.BrowserSubscription, &webpush.Options{
Subscriber: s.config.WebPushEmailAddress,
VAPIDPublicKey: s.config.WebPushPublicKey,
VAPIDPrivateKey: s.config.WebPushPrivateKey,
// Deliverability on iOS isn't great with lower urgency values,
// and thus we can't really map lower ntfy priorities to lower urgency values
Urgency: webpush.UrgencyHigh,
})
if err != nil {
log.Tag(tagWebPush).Err(err).Fields(*ctx).Debug("Unable to publish web push message")
if err := s.webPush.RemoveByEndpoint(sub.BrowserSubscription.Endpoint); err != nil {
log.Tag(tagWebPush).Err(err).Fields(*ctx).Warn("Unable to expire subscription")
}
return
}
// May want to handle at least 429 differently, but for now treat all errors the same
if !(200 <= resp.StatusCode && resp.StatusCode <= 299) {
log.Tag(tagWebPush).Fields(*ctx).Field("response", resp).Debug("Unable to publish web push message")
if err := s.webPush.RemoveByEndpoint(sub.BrowserSubscription.Endpoint); err != nil {
log.Tag(tagWebPush).Err(err).Fields(*ctx).Warn("Unable to expire subscription")
}
return
}
}