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|
//go:build ignore
package server
import (
"encoding/json"
"fmt"
"net/http"
"regexp"
"strings"
"github.com/SherClockHolmes/webpush-go"
"heckel.io/ntfy/v2/log"
"heckel.io/ntfy/v2/user"
)
const (
webPushTopicSubscribeLimit = 50
)
var (
webPushAllowedEndpointsPatterns = []string{
"https://*.google.com/",
"https://*.googleapis.com/",
"https://*.mozilla.com/",
"https://*.mozaws.net/",
"https://*.windows.com/",
"https://*.microsoft.com/",
"https://*.apple.com/",
}
webPushAllowedEndpointsRegex *regexp.Regexp
)
func init() {
for i, pattern := range webPushAllowedEndpointsPatterns {
webPushAllowedEndpointsPatterns[i] = strings.ReplaceAll(strings.ReplaceAll(pattern, ".", "\\."), "*", ".+")
}
allPatterns := fmt.Sprintf("^(%s)", strings.Join(webPushAllowedEndpointsPatterns, "|"))
webPushAllowedEndpointsRegex = regexp.MustCompile(allPatterns)
}
func (s *Server) handleWebPushUpdate(w http.ResponseWriter, r *http.Request, v *visitor) error {
req, err := readJSONWithLimit[apiWebPushUpdateSubscriptionRequest](r.Body, jsonBodyBytesLimit, false)
if err != nil || req.Endpoint == "" || req.P256dh == "" || req.Auth == "" {
return errHTTPBadRequestWebPushSubscriptionInvalid
} else if !webPushAllowedEndpointsRegex.MatchString(req.Endpoint) {
return errHTTPBadRequestWebPushEndpointUnknown
} else if len(req.Topics) > webPushTopicSubscribeLimit {
return errHTTPBadRequestWebPushTopicCountTooHigh
}
topics, err := s.topicsFromIDs(req.Topics...)
if err != nil {
return err
}
if s.userManager != nil {
u := v.User()
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.UpsertSubscription(req.Endpoint, req.Auth, req.P256dh, v.MaybeUserID(), v.IP(), req.Topics); err != nil {
return err
}
return s.writeJSON(w, newSuccessResponse())
}
func (s *Server) handleWebPushDelete(w http.ResponseWriter, r *http.Request, _ *visitor) error {
req, err := readJSONWithLimit[apiWebPushUpdateSubscriptionRequest](r.Body, jsonBodyBytesLimit, false)
if err != nil || req.Endpoint == "" {
return errHTTPBadRequestWebPushSubscriptionInvalid
}
if err := s.webPush.RemoveSubscriptionsByEndpoint(req.Endpoint); 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).With(v, m).Warn("Unable to publish web push messages")
return
}
log.Tag(tagWebPush).With(v, m).Debug("Publishing web push message to %d subscribers", len(subscriptions))
payload, err := json.Marshal(newWebPushPayload(fmt.Sprintf("%s/%s", s.config.BaseURL, m.Topic), m))
if err != nil {
log.Tag(tagWebPush).Err(err).With(v, m).Warn("Unable to marshal expiring payload")
return
}
for _, subscription := range subscriptions {
if err := s.sendWebPushNotification(subscription, payload, v, m); err != nil {
log.Tag(tagWebPush).Err(err).With(v, m, subscription).Warn("Unable to publish web push message")
}
}
}
func (s *Server) pruneAndNotifyWebPushSubscriptions() {
if s.config.WebPushPublicKey == "" {
return
}
go func() {
if err := s.pruneAndNotifyWebPushSubscriptionsInternal(); err != nil {
log.Tag(tagWebPush).Err(err).Warn("Unable to prune or notify web push subscriptions")
}
}()
}
func (s *Server) pruneAndNotifyWebPushSubscriptionsInternal() error {
// Expire old subscriptions
if err := s.webPush.RemoveExpiredSubscriptions(s.config.WebPushExpiryDuration); err != nil {
return err
}
// Notify subscriptions that will expire soon
subscriptions, err := s.webPush.SubscriptionsExpiring(s.config.WebPushExpiryWarningDuration)
if err != nil {
return err
} else if len(subscriptions) == 0 {
return nil
}
payload, err := json.Marshal(newWebPushSubscriptionExpiringPayload())
if err != nil {
return err
}
warningSent := make([]*webPushSubscription, 0)
for _, subscription := range subscriptions {
if err := s.sendWebPushNotification(subscription, payload); err != nil {
log.Tag(tagWebPush).Err(err).With(subscription).Warn("Unable to publish expiry imminent warning")
continue
}
warningSent = append(warningSent, subscription)
}
if err := s.webPush.MarkExpiryWarningSent(warningSent); err != nil {
return err
}
log.Tag(tagWebPush).Debug("Expired old subscriptions and published %d expiry imminent warnings", len(subscriptions))
return nil
}
func (s *Server) sendWebPushNotification(sub *webPushSubscription, message []byte, contexters ...log.Contexter) error {
log.Tag(tagWebPush).With(sub).With(contexters...).Debug("Sending web push message")
payload := &webpush.Subscription{
Endpoint: sub.Endpoint,
Keys: webpush.Keys{
Auth: sub.Auth,
P256dh: sub.P256dh,
},
}
resp, err := webpush.SendNotification(message, payload, &webpush.Options{
Subscriber: s.config.WebPushEmailAddress,
VAPIDPublicKey: s.config.WebPushPublicKey,
VAPIDPrivateKey: s.config.WebPushPrivateKey,
Urgency: webpush.UrgencyHigh, // iOS requires this to ensure delivery
TTL: int(s.config.CacheDuration.Seconds()),
})
if err != nil {
log.Tag(tagWebPush).With(sub).With(contexters...).Err(err).Debug("Unable to publish web push message, removing endpoint")
if err := s.webPush.RemoveSubscriptionsByEndpoint(sub.Endpoint); err != nil {
return err
}
return err
}
if (resp.StatusCode < 200 || resp.StatusCode > 299) && resp.StatusCode != 429 {
log.Tag(tagWebPush).With(sub).With(contexters...).Field("response_code", resp.StatusCode).Debug("Unable to publish web push message, unexpected response")
if err := s.webPush.RemoveSubscriptionsByEndpoint(sub.Endpoint); err != nil {
return err
}
return errHTTPInternalErrorWebPushUnableToPublish.With(sub).With(contexters...)
}
return nil
}
|
