mirror of
https://github.com/binwiederhier/ntfy.git
synced 2024-10-31 17:11:13 +01:00
171 lines
5.8 KiB
Go
171 lines
5.8 KiB
Go
package server
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import (
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"encoding/json"
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"fmt"
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"net/http"
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"regexp"
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"strings"
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"github.com/SherClockHolmes/webpush-go"
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"heckel.io/ntfy/log"
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"heckel.io/ntfy/user"
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)
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const (
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webPushTopicSubscribeLimit = 50
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)
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var (
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webPushAllowedEndpointsPatterns = []string{
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"https://*.google.com/",
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"https://*.googleapis.com/",
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"https://*.mozilla.com/",
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"https://*.mozaws.net/",
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"https://*.windows.com/",
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"https://*.microsoft.com/",
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"https://*.apple.com/",
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}
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webPushAllowedEndpointsRegex *regexp.Regexp
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)
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func init() {
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for i, pattern := range webPushAllowedEndpointsPatterns {
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webPushAllowedEndpointsPatterns[i] = strings.ReplaceAll(strings.ReplaceAll(pattern, ".", "\\."), "*", ".+")
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}
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allPatterns := fmt.Sprintf("^(%s)", strings.Join(webPushAllowedEndpointsPatterns, "|"))
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webPushAllowedEndpointsRegex = regexp.MustCompile(allPatterns)
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}
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func (s *Server) handleWebPushUpdate(w http.ResponseWriter, r *http.Request, v *visitor) error {
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req, err := readJSONWithLimit[apiWebPushUpdateSubscriptionRequest](r.Body, jsonBodyBytesLimit, false)
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if err != nil || req.Endpoint == "" || req.P256dh == "" || req.Auth == "" {
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return errHTTPBadRequestWebPushSubscriptionInvalid
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} else if !webPushAllowedEndpointsRegex.MatchString(req.Endpoint) {
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return errHTTPBadRequestWebPushEndpointUnknown
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} else if len(req.Topics) > webPushTopicSubscribeLimit {
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return errHTTPBadRequestWebPushTopicCountTooHigh
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}
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topics, err := s.topicsFromIDs(req.Topics...)
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if err != nil {
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return err
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}
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if s.userManager != nil {
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u := v.User()
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for _, t := range topics {
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if err := s.userManager.Authorize(u, t.ID, user.PermissionRead); err != nil {
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logvr(v, r).With(t).Err(err).Debug("Access to topic %s not authorized", t.ID)
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return errHTTPForbidden.With(t)
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}
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}
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}
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if err := s.webPush.UpsertSubscription(req.Endpoint, req.Auth, req.P256dh, v.MaybeUserID(), v.IP(), req.Topics); err != nil {
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return err
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}
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return s.writeJSON(w, newSuccessResponse())
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}
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func (s *Server) handleWebPushDelete(w http.ResponseWriter, r *http.Request, _ *visitor) error {
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req, err := readJSONWithLimit[apiWebPushUpdateSubscriptionRequest](r.Body, jsonBodyBytesLimit, false)
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if err != nil || req.Endpoint == "" {
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return errHTTPBadRequestWebPushSubscriptionInvalid
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}
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if err := s.webPush.RemoveSubscriptionsByEndpoint(req.Endpoint); err != nil {
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return err
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}
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return s.writeJSON(w, newSuccessResponse())
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}
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func (s *Server) publishToWebPushEndpoints(v *visitor, m *message) {
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subscriptions, err := s.webPush.SubscriptionsForTopic(m.Topic)
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if err != nil {
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logvm(v, m).Err(err).With(v, m).Warn("Unable to publish web push messages")
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return
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}
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log.Tag(tagWebPush).With(v, m).Debug("Publishing web push message to %d subscribers", len(subscriptions))
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payload, err := json.Marshal(newWebPushPayload(fmt.Sprintf("%s/%s", s.config.BaseURL, m.Topic), m))
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if err != nil {
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log.Tag(tagWebPush).Err(err).With(v, m).Warn("Unable to marshal expiring payload")
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return
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}
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for _, subscription := range subscriptions {
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if err := s.sendWebPushNotification(subscription, payload, v, m); err != nil {
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log.Tag(tagWebPush).Err(err).With(v, m, subscription).Warn("Unable to publish web push message")
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}
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}
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}
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func (s *Server) pruneAndNotifyWebPushSubscriptions() {
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if s.config.WebPushPublicKey == "" {
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return
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}
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go func() {
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if err := s.pruneAndNotifyWebPushSubscriptionsInternal(); err != nil {
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log.Tag(tagWebPush).Err(err).Warn("Unable to prune or notify web push subscriptions")
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}
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}()
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}
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func (s *Server) pruneAndNotifyWebPushSubscriptionsInternal() error {
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// Expire old subscriptions
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if err := s.webPush.RemoveExpiredSubscriptions(s.config.WebPushExpiryDuration); err != nil {
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return err
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}
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// Notify subscriptions that will expire soon
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subscriptions, err := s.webPush.SubscriptionsExpiring(s.config.WebPushExpiryWarningDuration)
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if err != nil {
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return err
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} else if len(subscriptions) == 0 {
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return nil
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}
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payload, err := json.Marshal(newWebPushSubscriptionExpiringPayload())
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if err != nil {
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return err
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}
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warningSent := make([]*webPushSubscription, 0)
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for _, subscription := range subscriptions {
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if err := s.sendWebPushNotification(subscription, payload); err != nil {
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log.Tag(tagWebPush).Err(err).With(subscription).Warn("Unable to publish expiry imminent warning")
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continue
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}
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warningSent = append(warningSent, subscription)
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}
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if err := s.webPush.MarkExpiryWarningSent(warningSent); err != nil {
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return err
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}
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log.Tag(tagWebPush).Debug("Expired old subscriptions and published %d expiry imminent warnings", len(subscriptions))
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return nil
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}
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func (s *Server) sendWebPushNotification(sub *webPushSubscription, message []byte, contexters ...log.Contexter) error {
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log.Tag(tagWebPush).With(sub).With(contexters...).Debug("Sending web push message")
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payload := &webpush.Subscription{
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Endpoint: sub.Endpoint,
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Keys: webpush.Keys{
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Auth: sub.Auth,
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P256dh: sub.P256dh,
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},
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}
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resp, err := webpush.SendNotification(message, payload, &webpush.Options{
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Subscriber: s.config.WebPushEmailAddress,
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VAPIDPublicKey: s.config.WebPushPublicKey,
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VAPIDPrivateKey: s.config.WebPushPrivateKey,
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Urgency: webpush.UrgencyHigh, // iOS requires this to ensure delivery
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TTL: int(s.config.CacheDuration.Seconds()),
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})
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if err != nil {
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log.Tag(tagWebPush).With(sub).With(contexters...).Err(err).Debug("Unable to publish web push message, removing endpoint")
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if err := s.webPush.RemoveSubscriptionsByEndpoint(sub.Endpoint); err != nil {
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return err
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}
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return err
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}
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if (resp.StatusCode < 200 || resp.StatusCode > 299) && resp.StatusCode != 429 {
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log.Tag(tagWebPush).With(sub).With(contexters...).Field("response_code", resp.StatusCode).Debug("Unable to publish web push message, unexpected response")
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if err := s.webPush.RemoveSubscriptionsByEndpoint(sub.Endpoint); err != nil {
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return err
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}
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return errHTTPInternalErrorWebPushUnableToPublish.With(sub).With(contexters...)
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}
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return nil
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}
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