parra/ntfy
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ntfy
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Combine things, move stuff

This commit is contained in:
Philipp Heckel 2022-01-15 23:17:46 -05:00
parent 707c58a120
commit 2b6363474e
5 changed files with 231 additions and 187 deletions
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169
server/server.go
View File

@ -32,9 +32,6 @@ import (
"unicode/utf8"
)
// TODO add "max messages in a topic" limit
// TODO implement "since=<ID>"
// Server is the main server, providing the UI and API for ntfy
type Server struct {
config *Config
@ -59,25 +56,6 @@ type indexPage struct {
CacheDuration time.Duration
}
type sinceTime time.Time
func (t sinceTime) IsAll() bool {
return t == sinceAllMessages
}
func (t sinceTime) IsNone() bool {
return t == sinceNoMessages
}
func (t sinceTime) Time() time.Time {
return time.Time(t)
}
var (
sinceAllMessages = sinceTime(time.Unix(0, 0))
sinceNoMessages = sinceTime(time.Unix(1, 0))
)
var (
topicRegex = regexp.MustCompile(`^[-_A-Za-z0-9]{1,64}$`) // No /!
topicPathRegex = regexp.MustCompile(`^/[-_A-Za-z0-9]{1,64}$`) // Regex must match JS & Android app!
@ -117,7 +95,6 @@ const (
firebaseControlTopic = "~control" // See Android if changed
emptyMessageBody = "triggered" // Used if message body is empty
defaultAttachmentMessage = "You received a file: %s" // Used if message body is empty, and there is an attachment
fcmMessageLimit = 4000 // see maybeTruncateFCMMessage for details
)
// WebSocket constants
@ -232,25 +209,6 @@ func createFirebaseSubscriber(conf *Config) (subscriber, error) {
}, nil
}
// maybeTruncateFCMMessage performs best-effort truncation of FCM messages.
// The docs say the limit is 4000 characters, but during testing it wasn't quite clear
// what fields matter; so we're just capping the serialized JSON to 4000 bytes.
func maybeTruncateFCMMessage(m *messaging.Message) *messaging.Message {
s, err := json.Marshal(m)
if err != nil {
return m
}
if len(s) > fcmMessageLimit {
over := len(s) - fcmMessageLimit + 16 // = len("truncated":"1",), sigh ...
message, ok := m.Data["message"]
if ok && len(message) > over {
m.Data["truncated"] = "1"
m.Data["message"] = message[:len(message)-over]
}
}
return m
}
// Run executes the main server. It listens on HTTP (+ HTTPS, if configured), and starts
// a manager go routine to print stats and prune messages.
func (s *Server) Run() error {
@ -391,7 +349,7 @@ func (s *Server) handleHome(w http.ResponseWriter, r *http.Request) error {
}
func (s *Server) handleTopic(w http.ResponseWriter, r *http.Request) error {
unifiedpush := readParam(r, "x-unifiedpush", "unifiedpush", "up") == "1" // see PUT/POST too!
unifiedpush := readBoolParam(r, false, "x-unifiedpush", "unifiedpush", "up") // see PUT/POST too!
if unifiedpush {
w.Header().Set("Content-Type", "application/json")
w.Header().Set("Access-Control-Allow-Origin", "*") // CORS, allow cross-origin requests
@ -497,13 +455,15 @@ func (s *Server) handlePublish(w http.ResponseWriter, r *http.Request, v *visito
if err := json.NewEncoder(w).Encode(m); err != nil {
return err
}
s.inc(&s.messages)
s.mu.Lock()
s.messages++
s.mu.Unlock()
return nil
}
func (s *Server) parsePublishParams(r *http.Request, v *visitor, m *message) (cache bool, firebase bool, email string, err error) {
cache = readParam(r, "x-cache", "cache") != "no"
firebase = readParam(r, "x-firebase", "firebase") != "no"
cache = readBoolParam(r, true, "x-cache", "cache")
firebase = readBoolParam(r, true, "x-firebase", "firebase")
m.Title = readParam(r, "x-title", "title", "t")
m.Click = readParam(r, "x-click", "click")
filename := readParam(r, "x-filename", "filename", "file", "f")
@ -574,29 +534,13 @@ func (s *Server) parsePublishParams(r *http.Request, v *visitor, m *message) (ca
}
m.Time = delay.Unix()
}
unifiedpush := readParam(r, "x-unifiedpush", "unifiedpush", "up") == "1" // see GET too!
unifiedpush := readBoolParam(r, false, "x-unifiedpush", "unifiedpush", "up") // see GET too!
if unifiedpush {
firebase = false
}
return cache, firebase, email, nil
}
func readParam(r *http.Request, names ...string) string {
for _, name := range names {
value := r.Header.Get(name)
if value != "" {
return strings.TrimSpace(value)
}
}
for _, name := range names {
value := r.URL.Query().Get(strings.ToLower(name))
if value != "" {
return strings.TrimSpace(value)
}
}
return ""
}
// handlePublishBody consumes the PUT/POST body and decides whether the body is an attachment or the message.
//
// 1. curl -H "Attach: http://example.com/file.jpg" ntfy.sh/mytopic
@ -680,7 +624,7 @@ func (s *Server) handleSubscribeJSON(w http.ResponseWriter, r *http.Request, v *
}
return buf.String(), nil
}
return s.handleSubscribe(w, r, v, "json", "application/x-ndjson", encoder)
return s.handleSubscribeHTTP(w, r, v, "application/x-ndjson", encoder)
}
func (s *Server) handleSubscribeSSE(w http.ResponseWriter, r *http.Request, v *visitor) error {
@ -694,7 +638,7 @@ func (s *Server) handleSubscribeSSE(w http.ResponseWriter, r *http.Request, v *v
}
return fmt.Sprintf("data: %s\n", buf.String()), nil
}
return s.handleSubscribe(w, r, v, "sse", "text/event-stream", encoder)
return s.handleSubscribeHTTP(w, r, v, "text/event-stream", encoder)
}
func (s *Server) handleSubscribeRaw(w http.ResponseWriter, r *http.Request, v *visitor) error {
@ -704,33 +648,25 @@ func (s *Server) handleSubscribeRaw(w http.ResponseWriter, r *http.Request, v *v
}
return "\n", nil // "keepalive" and "open" events just send an empty line
}
return s.handleSubscribe(w, r, v, "raw", "text/plain", encoder)
return s.handleSubscribeHTTP(w, r, v, "text/plain", encoder)
}
func (s *Server) handleSubscribe(w http.ResponseWriter, r *http.Request, v *visitor, format string, contentType string, encoder messageEncoder) error {
func (s *Server) handleSubscribeHTTP(w http.ResponseWriter, r *http.Request, v *visitor, contentType string, encoder messageEncoder) error {
if err := v.SubscriptionAllowed(); err != nil {
return errHTTPTooManyRequestsLimitSubscriptions
}
defer v.RemoveSubscription()
topicsStr := strings.TrimSuffix(r.URL.Path[1:], "/"+format) // Hack
topicIDs := util.SplitNoEmpty(topicsStr, ",")
topics, err := s.topicsFromIDs(topicIDs...)
topics, topicsStr, err := s.topicsFromPath(r.URL.Path)
if err != nil {
return err
}
poll := readParam(r, "x-poll", "poll", "po") == "1"
scheduled := readParam(r, "x-scheduled", "scheduled", "sched") == "1"
since, err := parseSince(r, poll)
if err != nil {
return err
}
messageFilter, titleFilter, priorityFilter, tagsFilter, err := parseQueryFilters(r)
poll, since, scheduled, filters, err := parseSubscribeParams(r)
if err != nil {
return err
}
var wlock sync.Mutex
sub := func(msg *message) error {
if !passesQueryFilter(msg, messageFilter, titleFilter, priorityFilter, tagsFilter) {
if !filters.Pass(msg) {
return nil
}
m, err := encoder(msg)
@ -785,19 +721,11 @@ func (s *Server) handleSubscribeWS(w http.ResponseWriter, r *http.Request, v *vi
return errHTTPTooManyRequestsLimitSubscriptions
}
defer v.RemoveSubscription()
topicsStr := strings.TrimSuffix(r.URL.Path[1:], "/ws") // Hack
topicIDs := util.SplitNoEmpty(topicsStr, ",")
topics, err := s.topicsFromIDs(topicIDs...)
topics, topicsStr, err := s.topicsFromPath(r.URL.Path)
if err != nil {
return err
}
poll := readParam(r, "x-poll", "poll", "po") == "1"
scheduled := readParam(r, "x-scheduled", "scheduled", "sched") == "1"
since, err := parseSince(r, poll)
if err != nil {
return err
}
messageFilter, titleFilter, priorityFilter, tagsFilter, err := parseQueryFilters(r)
poll, since, scheduled, filters, err := parseSubscribeParams(r)
if err != nil {
return err
}
@ -850,7 +778,7 @@ func (s *Server) handleSubscribeWS(w http.ResponseWriter, r *http.Request, v *vi
}
})
sub := func(msg *message) error {
if !passesQueryFilter(msg, messageFilter, titleFilter, priorityFilter, tagsFilter) {
if !filters.Pass(msg) {
return nil
}
if err := conn.SetWriteDeadline(time.Now().Add(wsWriteWait)); err != nil {
@ -884,44 +812,20 @@ func (s *Server) handleSubscribeWS(w http.ResponseWriter, r *http.Request, v *vi
return err
}
func parseQueryFilters(r *http.Request) (messageFilter string, titleFilter string, priorityFilter []int, tagsFilter []string, err error) {
messageFilter = readParam(r, "x-message", "message", "m")
titleFilter = readParam(r, "x-title", "title", "t")
tagsFilter = util.SplitNoEmpty(readParam(r, "x-tags", "tags", "tag", "ta"), ",")
priorityFilter = make([]int, 0)
for _, p := range util.SplitNoEmpty(readParam(r, "x-priority", "priority", "prio", "p"), ",") {
priority, err := util.ParsePriority(p)
if err != nil {
return "", "", nil, nil, err
}
priorityFilter = append(priorityFilter, priority)
func parseSubscribeParams(r *http.Request) (poll bool, since sinceTime, scheduled bool, filters *queryFilter, err error) {
poll = readBoolParam(r, false, "x-poll", "poll", "po")
scheduled = readBoolParam(r, false, "x-scheduled", "scheduled", "sched")
since, err = parseSince(r, poll)
if err != nil {
return
}
filters, err = parseQueryFilters(r)
if err != nil {
return
}
return
}
func passesQueryFilter(msg *message, messageFilter string, titleFilter string, priorityFilter []int, tagsFilter []string) bool {
if msg.Event != messageEvent {
return true // filters only apply to messages
}
if messageFilter != "" && msg.Message != messageFilter {
return false
}
if titleFilter != "" && msg.Title != titleFilter {
return false
}
messagePriority := msg.Priority
if messagePriority == 0 {
messagePriority = 3 // For query filters, default priority (3) is the same as "not set" (0)
}
if len(priorityFilter) > 0 && !util.InIntList(priorityFilter, messagePriority) {
return false
}
if len(tagsFilter) > 0 && !util.InStringListAll(msg.Tags, tagsFilter) {
return false
}
return true
}
func (s *Server) sendOldMessages(topics []*topic, since sinceTime, scheduled bool, sub subscriber) error {
if since.IsNone() {
return nil
@ -980,6 +884,19 @@ func (s *Server) topicFromPath(path string) (*topic, error) {
return topics[0], nil
}
func (s *Server) topicsFromPath(path string) ([]*topic, string, error) {
parts := strings.Split(path, "/")
if len(parts) < 2 {
return nil, "", errHTTPBadRequestTopicInvalid
}
topicIDs := util.SplitNoEmpty(parts[1], ",")
topics, err := s.topicsFromIDs(topicIDs...)
if err != nil {
return nil, "", errHTTPBadRequestTopicInvalid
}
return topics, parts[1], nil
}
func (s *Server) topicsFromIDs(ids ...string) ([]*topic, error) {
s.mu.Lock()
defer s.mu.Unlock()
@ -1180,9 +1097,3 @@ func (s *Server) visitor(r *http.Request) *visitor {
v.Keepalive()
return v
}
func (s *Server) inc(counter *int64) {
s.mu.Lock()
defer s.mu.Unlock()
*counter++
}

58
server/server_test.go
View File

@ -4,7 +4,6 @@ import (
"bufio"
"context"
"encoding/json"
"firebase.google.com/go/messaging"
"fmt"
"github.com/stretchr/testify/require"
"heckel.io/ntfy/util"
@ -624,63 +623,6 @@ func TestServer_UnifiedPushDiscovery(t *testing.T) {
require.Equal(t, `{"unifiedpush":{"version":1}}`+"\n", response.Body.String())
}
func TestServer_MaybeTruncateFCMMessage(t *testing.T) {
origMessage := strings.Repeat("this is a long string", 300)
origFCMMessage := &messaging.Message{
Topic: "mytopic",
Data: map[string]string{
"id": "abcdefg",
"time": "1641324761",
"event": "message",
"topic": "mytopic",
"priority": "0",
"tags": "",
"title": "",
"message": origMessage,
},
Android: &messaging.AndroidConfig{
Priority: "high",
},
}
origMessageLength := len(origFCMMessage.Data["message"])
serializedOrigFCMMessage, _ := json.Marshal(origFCMMessage)
require.Greater(t, len(serializedOrigFCMMessage), fcmMessageLimit) // Pre-condition
truncatedFCMMessage := maybeTruncateFCMMessage(origFCMMessage)
truncatedMessageLength := len(truncatedFCMMessage.Data["message"])
serializedTruncatedFCMMessage, _ := json.Marshal(truncatedFCMMessage)
require.Equal(t, fcmMessageLimit, len(serializedTruncatedFCMMessage))
require.Equal(t, "1", truncatedFCMMessage.Data["truncated"])
require.NotEqual(t, origMessageLength, truncatedMessageLength)
}
func TestServer_MaybeTruncateFCMMessage_NotTooLong(t *testing.T) {
origMessage := "not really a long string"
origFCMMessage := &messaging.Message{
Topic: "mytopic",
Data: map[string]string{
"id": "abcdefg",
"time": "1641324761",
"event": "message",
"topic": "mytopic",
"priority": "0",
"tags": "",
"title": "",
"message": origMessage,
},
}
origMessageLength := len(origFCMMessage.Data["message"])
serializedOrigFCMMessage, _ := json.Marshal(origFCMMessage)
require.LessOrEqual(t, len(serializedOrigFCMMessage), fcmMessageLimit) // Pre-condition
notTruncatedFCMMessage := maybeTruncateFCMMessage(origFCMMessage)
notTruncatedMessageLength := len(notTruncatedFCMMessage.Data["message"])
serializedNotTruncatedFCMMessage, _ := json.Marshal(notTruncatedFCMMessage)
require.Equal(t, origMessageLength, notTruncatedMessageLength)
require.Equal(t, len(serializedOrigFCMMessage), len(serializedNotTruncatedFCMMessage))
require.Equal(t, "", notTruncatedFCMMessage.Data["truncated"])
}
func TestServer_PublishAttachment(t *testing.T) {
content := util.RandomString(5000) // > 4096
s := newTestServer(t, newTestConfig(t))

70
server/message.go → server/types.go
View File

@ -2,6 +2,7 @@ package server
import (
"heckel.io/ntfy/util"
"net/http"
"time"
)
@ -70,3 +71,72 @@ func newKeepaliveMessage(topic string) *message {
func newDefaultMessage(topic, msg string) *message {
return newMessage(messageEvent, topic, msg)
}
type sinceTime time.Time
func (t sinceTime) IsAll() bool {
return t == sinceAllMessages
}
func (t sinceTime) IsNone() bool {
return t == sinceNoMessages
}
func (t sinceTime) Time() time.Time {
return time.Time(t)
}
var (
sinceAllMessages = sinceTime(time.Unix(0, 0))
sinceNoMessages = sinceTime(time.Unix(1, 0))
)
type queryFilter struct {
Message string
Title string
Tags []string
Priority []int
}
func parseQueryFilters(r *http.Request) (*queryFilter, error) {
messageFilter := readParam(r, "x-message", "message", "m")
titleFilter := readParam(r, "x-title", "title", "t")
tagsFilter := util.SplitNoEmpty(readParam(r, "x-tags", "tags", "tag", "ta"), ",")
priorityFilter := make([]int, 0)
for _, p := range util.SplitNoEmpty(readParam(r, "x-priority", "priority", "prio", "p"), ",") {
priority, err := util.ParsePriority(p)
if err != nil {
return nil, err
}
priorityFilter = append(priorityFilter, priority)
}
return &queryFilter{
Message: messageFilter,
Title: titleFilter,
Tags: tagsFilter,
Priority: priorityFilter,
}, nil
}
func (q *queryFilter) Pass(msg *message) bool {
if msg.Event != messageEvent {
return true // filters only apply to messages
}
if q.Message != "" && msg.Message != q.Message {
return false
}
if q.Title != "" && msg.Title != q.Title {
return false
}
messagePriority := msg.Priority
if messagePriority == 0 {
messagePriority = 3 // For query filters, default priority (3) is the same as "not set" (0)
}
if len(q.Priority) > 0 && !util.InIntList(q.Priority, messagePriority) {
return false
}
if len(q.Tags) > 0 && !util.InStringListAll(msg.Tags, q.Tags) {
return false
}
return true
}

55
server/util.go Normal file
View File

@ -0,0 +1,55 @@
package server
import (
"encoding/json"
"firebase.google.com/go/messaging"
"net/http"
"strings"
)
const (
fcmMessageLimit = 4000
)
// maybeTruncateFCMMessage performs best-effort truncation of FCM messages.
// The docs say the limit is 4000 characters, but during testing it wasn't quite clear
// what fields matter; so we're just capping the serialized JSON to 4000 bytes.
func maybeTruncateFCMMessage(m *messaging.Message) *messaging.Message {
s, err := json.Marshal(m)
if err != nil {
return m
}
if len(s) > fcmMessageLimit {
over := len(s) - fcmMessageLimit + 16 // = len("truncated":"1",), sigh ...
message, ok := m.Data["message"]
if ok && len(message) > over {
m.Data["truncated"] = "1"
m.Data["message"] = message[:len(message)-over]
}
}
return m
}
func readBoolParam(r *http.Request, defaultValue bool, names ...string) bool {
value := strings.ToLower(readParam(r, names...))
if value == "" {
return defaultValue
}
return value == "1" || value == "yes" || value == "true"
}
func readParam(r *http.Request, names ...string) string {
for _, name := range names {
value := r.Header.Get(name)
if value != "" {
return strings.TrimSpace(value)
}
}
for _, name := range names {
value := r.URL.Query().Get(strings.ToLower(name))
if value != "" {
return strings.TrimSpace(value)
}
}
return ""
}

66
server/util_test.go Normal file
View File

@ -0,0 +1,66 @@
package server
import (
"encoding/json"
"firebase.google.com/go/messaging"
"github.com/stretchr/testify/require"
"strings"
"testing"
)
func TestMaybeTruncateFCMMessage(t *testing.T) {
origMessage := strings.Repeat("this is a long string", 300)
origFCMMessage := &messaging.Message{
Topic: "mytopic",
Data: map[string]string{
"id": "abcdefg",
"time": "1641324761",
"event": "message",
"topic": "mytopic",
"priority": "0",
"tags": "",
"title": "",
"message": origMessage,
},
Android: &messaging.AndroidConfig{
Priority: "high",
},
}
origMessageLength := len(origFCMMessage.Data["message"])
serializedOrigFCMMessage, _ := json.Marshal(origFCMMessage)
require.Greater(t, len(serializedOrigFCMMessage), fcmMessageLimit) // Pre-condition
truncatedFCMMessage := maybeTruncateFCMMessage(origFCMMessage)
truncatedMessageLength := len(truncatedFCMMessage.Data["message"])
serializedTruncatedFCMMessage, _ := json.Marshal(truncatedFCMMessage)
require.Equal(t, fcmMessageLimit, len(serializedTruncatedFCMMessage))
require.Equal(t, "1", truncatedFCMMessage.Data["truncated"])
require.NotEqual(t, origMessageLength, truncatedMessageLength)
}
func TestMaybeTruncateFCMMessage_NotTooLong(t *testing.T) {
origMessage := "not really a long string"
origFCMMessage := &messaging.Message{
Topic: "mytopic",
Data: map[string]string{
"id": "abcdefg",
"time": "1641324761",
"event": "message",
"topic": "mytopic",
"priority": "0",
"tags": "",
"title": "",
"message": origMessage,
},
}
origMessageLength := len(origFCMMessage.Data["message"])
serializedOrigFCMMessage, _ := json.Marshal(origFCMMessage)
require.LessOrEqual(t, len(serializedOrigFCMMessage), fcmMessageLimit) // Pre-condition
notTruncatedFCMMessage := maybeTruncateFCMMessage(origFCMMessage)
notTruncatedMessageLength := len(notTruncatedFCMMessage.Data["message"])
serializedNotTruncatedFCMMessage, _ := json.Marshal(notTruncatedFCMMessage)
require.Equal(t, origMessageLength, notTruncatedMessageLength)
require.Equal(t, len(serializedOrigFCMMessage), len(serializedNotTruncatedFCMMessage))
require.Equal(t, "", notTruncatedFCMMessage.Data["truncated"])
}