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ntfy
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Merge pull request #95 from binwiederhier/websockets 

Websockets; working
pull/118/head
Philipp C. Heckel 2022-01-16 00:21:31 -05:00 committed by GitHub
parent cdc9c0d62c 9b0e7eedb2
commit 828a286809
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
17 changed files with 594 additions and 241 deletions
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12
client/client.go
View File

@ -44,6 +44,8 @@ type Message struct { // TODO combine with server.message
Title string
Priority int
Tags []string
Click string
Attachment *Attachment
// Additional fields
TopicURL string
@ -51,6 +53,16 @@ type Message struct { // TODO combine with server.message
Raw string
}
// Attachment represents a message attachment
type Attachment struct {
Name string `json:"name"`
Type string `json:"type,omitempty"`
Size int64 `json:"size,omitempty"`
Expires int64 `json:"expires,omitempty"`
URL string `json:"url"`
Owner string `json:"-"` // IP address of uploader, used for rate limiting
}
type subscription struct {
ID string
topicURL string

4
cmd/app_test.go
View File

@ -5,8 +5,6 @@ import (
"encoding/json"
"github.com/urfave/cli/v2"
"heckel.io/ntfy/client"
"io"
"log"
"os"
"strings"
"testing"
@ -15,7 +13,7 @@ import (
// This only contains helpers so far
func TestMain(m *testing.M) {
log.SetOutput(io.Discard)
// log.SetOutput(io.Discard)
os.Exit(m.Run())
}

36
cmd/publish_test.go
View File

@ -34,3 +34,39 @@ func TestCLI_Publish_Subscribe_Poll(t *testing.T) {
m = toMessage(t, stdout.String())
require.Equal(t, "some message", m.Message)
}
func TestCLI_Publish_All_The_Things(t *testing.T) {
s, port := test.StartServer(t)
defer test.StopServer(t, s, port)
topic := fmt.Sprintf("http://127.0.0.1:%d/mytopic", port)
app, _, stdout, _ := newTestApp()
require.Nil(t, app.Run([]string{
"ntfy", "publish",
"--title", "this is a title",
"--priority", "high",
"--tags", "tag1,tag2",
// No --delay, --email
"--click", "https://ntfy.sh",
"--attach", "https://f-droid.org/F-Droid.apk",
"--filename", "fdroid.apk",
"--no-cache",
"--no-firebase",
topic,
"some message",
}))
m := toMessage(t, stdout.String())
require.Equal(t, "message", m.Event)
require.Equal(t, "mytopic", m.Topic)
require.Equal(t, "some message", m.Message)
require.Equal(t, "this is a title", m.Title)
require.Equal(t, 4, m.Priority)
require.Equal(t, []string{"tag1", "tag2"}, m.Tags)
require.Equal(t, "https://ntfy.sh", m.Click)
require.Equal(t, "https://f-droid.org/F-Droid.apk", m.Attachment.URL)
require.Equal(t, "fdroid.apk", m.Attachment.Name)
require.Equal(t, int64(0), m.Attachment.Size)
require.Equal(t, "", m.Attachment.Owner)
require.Equal(t, int64(0), m.Attachment.Expires)
require.Equal(t, "", m.Attachment.Type)
}

68
cmd/serve_test.go 100644
View File

@ -0,0 +1,68 @@
package cmd
import (
"fmt"
"github.com/gorilla/websocket"
"github.com/stretchr/testify/require"
"heckel.io/ntfy/client"
"heckel.io/ntfy/test"
"heckel.io/ntfy/util"
"math/rand"
"os/exec"
"path/filepath"
"testing"
"time"
)
func init() {
rand.Seed(time.Now().UnixMilli())
}
func TestCLI_Serve_Unix_Curl(t *testing.T) {
sockFile := filepath.Join(t.TempDir(), "ntfy.sock")
go func() {
app, _, _, _ := newTestApp()
err := app.Run([]string{"ntfy", "serve", "--listen-http=-", "--listen-unix=" + sockFile})
require.Nil(t, err)
}()
for i := 0; i < 40 && !util.FileExists(sockFile); i++ {
time.Sleep(50 * time.Millisecond)
}
require.True(t, util.FileExists(sockFile))
cmd := exec.Command("curl", "-s", "--unix-socket", sockFile, "-d", "this is a message", "localhost/mytopic")
out, err := cmd.Output()
require.Nil(t, err)
m := toMessage(t, string(out))
require.Equal(t, "this is a message", m.Message)
}
func TestCLI_Serve_WebSocket(t *testing.T) {
port := 10000 + rand.Intn(20000)
go func() {
app, _, _, _ := newTestApp()
err := app.Run([]string{"ntfy", "serve", fmt.Sprintf("--listen-http=:%d", port)})
require.Nil(t, err)
}()
test.WaitForPortUp(t, port)
ws, _, err := websocket.DefaultDialer.Dial(fmt.Sprintf("ws://127.0.0.1:%d/mytopic/ws", port), nil)
require.Nil(t, err)
messageType, data, err := ws.ReadMessage()
require.Nil(t, err)
require.Equal(t, websocket.TextMessage, messageType)
require.Equal(t, "open", toMessage(t, string(data)).Event)
c := client.New(client.NewConfig())
_, err = c.Publish(fmt.Sprintf("http://127.0.0.1:%d/mytopic", port), "my message")
require.Nil(t, err)
messageType, data, err = ws.ReadMessage()
require.Nil(t, err)
require.Equal(t, websocket.TextMessage, messageType)
m := toMessage(t, string(data))
require.Equal(t, "my message", m.Message)
require.Equal(t, "mytopic", m.Topic)
}

8
docs/config.md
View File

@ -243,6 +243,8 @@ or the root domain:
proxy_redirect off;
proxy_set_header Host $http_host;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "upgrade";
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_connect_timeout 3m;
@ -274,6 +276,8 @@ or the root domain:
proxy_redirect off;
proxy_set_header Host $http_host;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "upgrade";
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_connect_timeout 3m;
@ -549,7 +553,7 @@ variable before running the `ntfy` command (e.g. `export NTFY_LISTEN_HTTP=:80`).
| `smtp-server-listen` | `NTFY_SMTP_SERVER_LISTEN` | `[ip]:port` | - | Defines the IP address and port the SMTP server will listen on, e.g. `:25` or `1.2.3.4:25` |
| `smtp-server-domain` | `NTFY_SMTP_SERVER_DOMAIN` | *domain name* | - | SMTP server e-mail domain, e.g. `ntfy.sh` |
| `smtp-server-addr-prefix` | `NTFY_SMTP_SERVER_ADDR_PREFIX` | `[ip]:port` | - | Optional prefix for the e-mail addresses to prevent spam, e.g. `ntfy-` |
| `keepalive-interval` | `NTFY_KEEPALIVE_INTERVAL` | *duration* | 55s | Interval in which keepalive messages are sent to the client. This is to prevent intermediaries closing the connection for inactivity. Note that the Android app has a hardcoded timeout at 77s, so it should be less than that. |
| `keepalive-interval` | `NTFY_KEEPALIVE_INTERVAL` | *duration* | 45s | Interval in which keepalive messages are sent to the client. This is to prevent intermediaries closing the connection for inactivity. Note that the Android app has a hardcoded timeout at 77s, so it should be less than that. |
| `manager-interval` | `$NTFY_MANAGER_INTERVAL` | *duration* | 1m | Interval in which the manager prunes old messages, deletes topics and prints the stats. |
| `global-topic-limit` | `NTFY_GLOBAL_TOPIC_LIMIT` | *number* | 15,000 | Rate limiting: Total number of topics before the server rejects new topics. |
| `visitor-subscription-limit` | `NTFY_VISITOR_SUBSCRIPTION_LIMIT` | *number* | 30 | Rate limiting: Number of subscriptions per visitor (IP address) |
@ -597,7 +601,7 @@ OPTIONS:
--attachment-total-size-limit value, -A value limit of the on-disk attachment cache (default: 5G) [$NTFY_ATTACHMENT_TOTAL_SIZE_LIMIT]
--attachment-file-size-limit value, -Y value per-file attachment size limit (e.g. 300k, 2M, 100M) (default: 15M) [$NTFY_ATTACHMENT_FILE_SIZE_LIMIT]
--attachment-expiry-duration value, -X value duration after which uploaded attachments will be deleted (e.g. 3h, 20h) (default: 3h) [$NTFY_ATTACHMENT_EXPIRY_DURATION]
--keepalive-interval value, -k value interval of keepalive messages (default: 55s) [$NTFY_KEEPALIVE_INTERVAL]
--keepalive-interval value, -k value interval of keepalive messages (default: 45s) [$NTFY_KEEPALIVE_INTERVAL]
--manager-interval value, -m value interval of for message pruning and stats printing (default: 1m0s) [$NTFY_MANAGER_INTERVAL]
--smtp-sender-addr value SMTP server address (host:port) for outgoing emails [$NTFY_SMTP_SENDER_ADDR]
--smtp-sender-user value SMTP user (if e-mail sending is enabled) [$NTFY_SMTP_SENDER_USER]

57
docs/subscribe/api.md
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@ -3,7 +3,11 @@ You can create and subscribe to a topic in the [web UI](web.md), via the [phone
or in your own app or script by subscribing the API. This page describes how to subscribe via API. You may also want to
check out the page that describes how to [publish messages](../publish.md).
The subscription API relies on a simple HTTP GET request with a streaming HTTP response, i.e **you open a GET request and
You can consume the subscription API as either a **[simple HTTP stream (JSON, SSE or raw)](#http-stream)**, or
**[via WebSockets](#websockets)**. Both are incredibly simple to use.
## HTTP stream
The HTTP stream-based API relies on a simple GET request with a streaming HTTP response, i.e **you open a GET request and
the connection stays open forever**, sending messages back as they come in. There are three different API endpoints, which
only differ in the response format:
@ -12,7 +16,7 @@ only differ in the response format:
can be used with [EventSource](https://developer.mozilla.org/en-US/docs/Web/API/EventSource)
* [Raw stream](#subscribe-as-raw-stream): `<topic>/raw` returns messages as raw text, with one line per message
## Subscribe as JSON stream
### Subscribe as JSON stream
Here are a few examples of how to consume the JSON endpoint (`<topic>/json`). For almost all languages, **this is the
recommended way to subscribe to a topic**. The notable exception is JavaScript, for which the
[SSE/EventSource stream](#subscribe-as-sse-stream) is much easier to work with.
@ -80,7 +84,7 @@ recommended way to subscribe to a topic**. The notable exception is JavaScript,
fclose($fp);
```
## Subscribe as SSE stream
### Subscribe as SSE stream
Using [EventSource](https://developer.mozilla.org/en-US/docs/Web/API/EventSource) in JavaScript, you can consume
notifications via a [Server-Sent Events (SSE)](https://en.wikipedia.org/wiki/Server-sent_events) stream. It's incredibly
easy to use. Here's what it looks like. You may also want to check out the [live example](/example.html).
@ -125,7 +129,7 @@ easy to use. Here's what it looks like. You may also want to check out the [live
};
```
## Subscribe as raw stream
### Subscribe as raw stream
The `/raw` endpoint will output one line per message, and **will only include the message body**. It's useful for extremely
simple scripts, and doesn't include all the data. Additional fields such as [priority](../publish.md#message-priority),
[tags](../publish.md#tags--emojis--) or [message title](../publish.md#message-title) are not included in this output
@ -184,6 +188,51 @@ format. Keepalive messages are sent as empty lines.
fclose($fp);
```
## WebSockets
You may also subscribe to topics via [WebSockets](https://en.wikipedia.org/wiki/WebSocket), which is also widely
supported in many languages. Most notably, WebSockets are natively supported in JavaScript. On the command line,
I recommend [websocat](https://github.com/vi/websocat), a fantastic tool similar to `socat` or `curl`, but specifically
for WebSockets.
The WebSockets endpoint is available at `<topic>/ws` and returns messages as JSON objects similar to the
[JSON stream endpoint](#subscribe-as-json-stream).
=== "Command line (websocat)"
```
$ websocat wss://ntfy.sh/mytopic/ws
{"id":"qRHUCCvjj8","time":1642307388,"event":"open","topic":"mytopic"}
{"id":"eOWoUBJ14x","time":1642307754,"event":"message","topic":"mytopic","message":"hi there"}
```
=== "HTTP"
``` http
GET /disk-alerts/ws HTTP/1.1
Host: ntfy.sh
Upgrade: websocket
Connection: Upgrade
HTTP/1.1 101 Switching Protocols
Upgrade: websocket
Connection: Upgrade
...
```
=== "Go"
``` go
import "github.com/gorilla/websocket"
ws, _, _ := websocket.DefaultDialer.Dial("wss://ntfy.sh/mytopic/ws", nil)
messageType, data, err := ws.ReadMessage()
...
```
=== "JavaScript"
``` javascript
const socket = new WebSocket('wss://ntfy.sh/mytopic/ws');
socket.addEventListener('message', function (event) {
console.log(event.data);
});
```
## Advanced features
### Poll for messages

2
go.mod
View File

@ -35,11 +35,13 @@ require (
github.com/golang/protobuf v1.5.2 // indirect
github.com/google/go-cmp v0.5.6 // indirect
github.com/googleapis/gax-go/v2 v2.1.1 // indirect
github.com/gorilla/websocket v1.4.2 // indirect
github.com/pkg/errors v0.9.1 // indirect
github.com/pmezard/go-difflib v1.0.0 // indirect
github.com/russross/blackfriday/v2 v2.1.0 // indirect
go.opencensus.io v0.23.0 // indirect
golang.org/x/net v0.0.0-20210813160813-60bc85c4be6d // indirect
golang.org/x/sync v0.0.0-20210220032951-036812b2e83c // indirect
golang.org/x/sys v0.0.0-20211210111614-af8b64212486 // indirect
golang.org/x/text v0.3.7 // indirect
golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 // indirect

3
go.sum
View File

@ -189,6 +189,8 @@ github.com/googleapis/gax-go/v2 v2.0.5/go.mod h1:DWXyrwAJ9X0FpwwEdw+IPEYBICEFu5m
github.com/googleapis/gax-go/v2 v2.1.0/go.mod h1:Q3nei7sK6ybPYH7twZdmQpAd1MKb7pfu6SK+H1/DsU0=
github.com/googleapis/gax-go/v2 v2.1.1 h1:dp3bWCh+PPO1zjRRiCSczJav13sBvG4UhNyVTa1KqdU=
github.com/googleapis/gax-go/v2 v2.1.1/go.mod h1:hddJymUZASv3XPyGkUpKj8pPO47Rmb0eJc8R6ouapiM=
github.com/gorilla/websocket v1.4.2 h1:+/TMaTYc4QFitKJxsQ7Yye35DkWvkdLcvGKqM+x0Ufc=
github.com/gorilla/websocket v1.4.2/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
github.com/grpc-ecosystem/grpc-gateway v1.16.0/go.mod h1:BDjrQk3hbvj6Nolgz8mAMFbcEtjT1g+wF4CSlocrBnw=
github.com/hashicorp/golang-lru v0.5.0/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
github.com/hashicorp/golang-lru v0.5.1/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
@ -356,6 +358,7 @@ golang.org/x/sync v0.0.0-20200317015054-43a5402ce75a/go.mod h1:RxMgew5VJxzue5/jJ
golang.org/x/sync v0.0.0-20200625203802-6e8e738ad208/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20201207232520-09787c993a3a/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20210220032951-036812b2e83c h1:5KslGYwFpkhGh+Q16bwMP3cOontH8FOep7tGV86Y7SQ=
golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=

2
server/config.go
View File

@ -8,7 +8,7 @@ import (
const (
DefaultListenHTTP = ":80"
DefaultCacheDuration = 12 * time.Hour
DefaultKeepaliveInterval = 55 * time.Second // Not too frequently to save battery (Android read timeout is 77s!)
DefaultKeepaliveInterval = 45 * time.Second // Not too frequently to save battery (Android read timeout used to be 77s!)
DefaultManagerInterval = time.Minute
DefaultAtSenderInterval = 10 * time.Second
DefaultMinDelay = 10 * time.Second

49
server/errors.go 100644
View File

@ -0,0 +1,49 @@
package server
import (
"encoding/json"
"net/http"
)
// errHTTP is a generic HTTP error for any non-200 HTTP error
type errHTTP struct {
Code int `json:"code,omitempty"`
HTTPCode int `json:"http"`
Message string `json:"error"`
Link string `json:"link,omitempty"`
}
func (e errHTTP) Error() string {
return e.Message
}
func (e errHTTP) JSON() string {
b, _ := json.Marshal(&e)
return string(b)
}
var (
errHTTPBadRequestEmailDisabled = &errHTTP{40001, http.StatusBadRequest, "e-mail notifications are not enabled", "https://ntfy.sh/docs/config/#e-mail-notifications"}
errHTTPBadRequestDelayNoCache = &errHTTP{40002, http.StatusBadRequest, "cannot disable cache for delayed message", ""}
errHTTPBadRequestDelayNoEmail = &errHTTP{40003, http.StatusBadRequest, "delayed e-mail notifications are not supported", ""}
errHTTPBadRequestDelayCannotParse = &errHTTP{40004, http.StatusBadRequest, "invalid delay parameter: unable to parse delay", "https://ntfy.sh/docs/publish/#scheduled-delivery"}
errHTTPBadRequestDelayTooSmall = &errHTTP{40005, http.StatusBadRequest, "invalid delay parameter: too small, please refer to the docs", "https://ntfy.sh/docs/publish/#scheduled-delivery"}
errHTTPBadRequestDelayTooLarge = &errHTTP{40006, http.StatusBadRequest, "invalid delay parameter: too large, please refer to the docs", "https://ntfy.sh/docs/publish/#scheduled-delivery"}
errHTTPBadRequestPriorityInvalid = &errHTTP{40007, http.StatusBadRequest, "invalid priority parameter", "https://ntfy.sh/docs/publish/#message-priority"}
errHTTPBadRequestSinceInvalid = &errHTTP{40008, http.StatusBadRequest, "invalid since parameter", "https://ntfy.sh/docs/subscribe/api/#fetch-cached-messages"}
errHTTPBadRequestTopicInvalid = &errHTTP{40009, http.StatusBadRequest, "invalid topic: path invalid", ""}
errHTTPBadRequestTopicDisallowed = &errHTTP{40010, http.StatusBadRequest, "invalid topic: topic name is disallowed", ""}
errHTTPBadRequestMessageNotUTF8 = &errHTTP{40011, http.StatusBadRequest, "invalid message: message must be UTF-8 encoded", ""}
errHTTPBadRequestAttachmentTooLarge = &errHTTP{40012, http.StatusBadRequest, "invalid request: attachment too large, or bandwidth limit reached", ""}
errHTTPBadRequestAttachmentURLInvalid = &errHTTP{40013, http.StatusBadRequest, "invalid request: attachment URL is invalid", ""}
errHTTPBadRequestAttachmentsDisallowed = &errHTTP{40014, http.StatusBadRequest, "invalid request: attachments not allowed", ""}
errHTTPBadRequestAttachmentsExpiryBeforeDelivery = &errHTTP{40015, http.StatusBadRequest, "invalid request: attachment expiry before delayed delivery date", ""}
errHTTPNotFound = &errHTTP{40401, http.StatusNotFound, "page not found", ""}
errHTTPTooManyRequestsLimitRequests = &errHTTP{42901, http.StatusTooManyRequests, "limit reached: too many requests, please be nice", "https://ntfy.sh/docs/publish/#limitations"}
errHTTPTooManyRequestsLimitEmails = &errHTTP{42902, http.StatusTooManyRequests, "limit reached: too many emails, please be nice", "https://ntfy.sh/docs/publish/#limitations"}
errHTTPTooManyRequestsLimitSubscriptions = &errHTTP{42903, http.StatusTooManyRequests, "limit reached: too many active subscriptions, please be nice", "https://ntfy.sh/docs/publish/#limitations"}
errHTTPTooManyRequestsLimitTotalTopics = &errHTTP{42904, http.StatusTooManyRequests, "limit reached: the total number of topics on the server has been reached, please contact the admin", "https://ntfy.sh/docs/publish/#limitations"}
errHTTPTooManyRequestsAttachmentBandwidthLimit = &errHTTP{42905, http.StatusTooManyRequests, "too many requests: daily bandwidth limit reached", "https://ntfy.sh/docs/publish/#limitations"}
errHTTPInternalError = &errHTTP{50001, http.StatusInternalServerError, "internal server error", ""}
errHTTPInternalErrorInvalidFilePath = &errHTTP{50002, http.StatusInternalServerError, "internal server error: invalid file path", ""}
)

317
server/server.go
View File

@ -10,6 +10,8 @@ import (
"firebase.google.com/go/messaging"
"fmt"
"github.com/emersion/go-smtp"
"github.com/gorilla/websocket"
"golang.org/x/sync/errgroup"
"google.golang.org/api/option"
"heckel.io/ntfy/util"
"html/template"
@ -30,9 +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
@ -52,53 +51,18 @@ type Server struct {
mu sync.Mutex
}
// errHTTP is a generic HTTP error for any non-200 HTTP error
type errHTTP struct {
Code int `json:"code,omitempty"`
HTTPCode int `json:"http"`
Message string `json:"error"`
Link string `json:"link,omitempty"`
}
func (e errHTTP) Error() string {
return e.Message
}
func (e errHTTP) JSON() string {
b, _ := json.Marshal(&e)
return string(b)
}
type indexPage struct {
Topic string
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!
jsonPathRegex = regexp.MustCompile(`^/[-_A-Za-z0-9]{1,64}(,[-_A-Za-z0-9]{1,64})*/json$`)
ssePathRegex = regexp.MustCompile(`^/[-_A-Za-z0-9]{1,64}(,[-_A-Za-z0-9]{1,64})*/sse$`)
rawPathRegex = regexp.MustCompile(`^/[-_A-Za-z0-9]{1,64}(,[-_A-Za-z0-9]{1,64})*/raw$`)
wsPathRegex = regexp.MustCompile(`^/[-_A-Za-z0-9]{1,64}(,[-_A-Za-z0-9]{1,64})*/ws$`)
publishPathRegex = regexp.MustCompile(`^/[-_A-Za-z0-9]{1,64}(,[-_A-Za-z0-9]{1,64})*/(publish|send|trigger)$`)
staticRegex = regexp.MustCompile(`^/static/.+`)
@ -125,37 +89,20 @@ var (
//go:embed docs
docsStaticFs embed.FS
docsStaticCached = &util.CachingEmbedFS{ModTime: time.Now(), FS: docsStaticFs}
errHTTPBadRequestEmailDisabled = &errHTTP{40001, http.StatusBadRequest, "e-mail notifications are not enabled", "https://ntfy.sh/docs/config/#e-mail-notifications"}
errHTTPBadRequestDelayNoCache = &errHTTP{40002, http.StatusBadRequest, "cannot disable cache for delayed message", ""}
errHTTPBadRequestDelayNoEmail = &errHTTP{40003, http.StatusBadRequest, "delayed e-mail notifications are not supported", ""}
errHTTPBadRequestDelayCannotParse = &errHTTP{40004, http.StatusBadRequest, "invalid delay parameter: unable to parse delay", "https://ntfy.sh/docs/publish/#scheduled-delivery"}
errHTTPBadRequestDelayTooSmall = &errHTTP{40005, http.StatusBadRequest, "invalid delay parameter: too small, please refer to the docs", "https://ntfy.sh/docs/publish/#scheduled-delivery"}
errHTTPBadRequestDelayTooLarge = &errHTTP{40006, http.StatusBadRequest, "invalid delay parameter: too large, please refer to the docs", "https://ntfy.sh/docs/publish/#scheduled-delivery"}
errHTTPBadRequestPriorityInvalid = &errHTTP{40007, http.StatusBadRequest, "invalid priority parameter", "https://ntfy.sh/docs/publish/#message-priority"}
errHTTPBadRequestSinceInvalid = &errHTTP{40008, http.StatusBadRequest, "invalid since parameter", "https://ntfy.sh/docs/subscribe/api/#fetch-cached-messages"}
errHTTPBadRequestTopicInvalid = &errHTTP{40009, http.StatusBadRequest, "invalid topic: path invalid", ""}
errHTTPBadRequestTopicDisallowed = &errHTTP{40010, http.StatusBadRequest, "invalid topic: topic name is disallowed", ""}
errHTTPBadRequestMessageNotUTF8 = &errHTTP{40011, http.StatusBadRequest, "invalid message: message must be UTF-8 encoded", ""}
errHTTPBadRequestAttachmentTooLarge = &errHTTP{40012, http.StatusBadRequest, "invalid request: attachment too large, or bandwidth limit reached", ""}
errHTTPBadRequestAttachmentURLInvalid = &errHTTP{40013, http.StatusBadRequest, "invalid request: attachment URL is invalid", ""}
errHTTPBadRequestAttachmentsDisallowed = &errHTTP{40014, http.StatusBadRequest, "invalid request: attachments not allowed", ""}
errHTTPBadRequestAttachmentsExpiryBeforeDelivery = &errHTTP{40015, http.StatusBadRequest, "invalid request: attachment expiry before delayed delivery date", ""}
errHTTPNotFound = &errHTTP{40401, http.StatusNotFound, "page not found", ""}
errHTTPTooManyRequestsLimitRequests = &errHTTP{42901, http.StatusTooManyRequests, "limit reached: too many requests, please be nice", "https://ntfy.sh/docs/publish/#limitations"}
errHTTPTooManyRequestsLimitEmails = &errHTTP{42902, http.StatusTooManyRequests, "limit reached: too many emails, please be nice", "https://ntfy.sh/docs/publish/#limitations"}
errHTTPTooManyRequestsLimitSubscriptions = &errHTTP{42903, http.StatusTooManyRequests, "limit reached: too many active subscriptions, please be nice", "https://ntfy.sh/docs/publish/#limitations"}
errHTTPTooManyRequestsLimitTotalTopics = &errHTTP{42904, http.StatusTooManyRequests, "limit reached: the total number of topics on the server has been reached, please contact the admin", "https://ntfy.sh/docs/publish/#limitations"}
errHTTPTooManyRequestsAttachmentBandwidthLimit = &errHTTP{42905, http.StatusTooManyRequests, "too many requests: daily bandwidth limit reached", "https://ntfy.sh/docs/publish/#limitations"}
errHTTPInternalError = &errHTTP{50001, http.StatusInternalServerError, "internal server error", ""}
errHTTPInternalErrorInvalidFilePath = &errHTTP{50002, http.StatusInternalServerError, "internal server error: invalid file path", ""}
)
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
const (
wsWriteWait = 2 * time.Second
wsBufferSize = 1024
wsReadLimit = 64 // We only ever receive PINGs
wsPongWait = 15 * time.Second
)
// New instantiates a new Server. It creates the cache and adds a Firebase
@ -262,25 +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 {
@ -364,16 +292,19 @@ func (s *Server) Stop() {
func (s *Server) handle(w http.ResponseWriter, r *http.Request) {
if err := s.handleInternal(w, r); err != nil {
var e *errHTTP
var ok bool
if e, ok = err.(*errHTTP); !ok {
e = errHTTPInternalError
if websocket.IsWebSocketUpgrade(r) {
log.Printf("[%s] WS %s %s - %s", r.RemoteAddr, r.Method, r.URL.Path, err.Error())
return // Do not attempt to write to upgraded connection
}
log.Printf("[%s] %s - %d - %d - %s", r.RemoteAddr, r.Method, e.HTTPCode, e.Code, err.Error())
httpErr, ok := err.(*errHTTP)
if !ok {
httpErr = errHTTPInternalError
}
log.Printf("[%s] HTTP %s %s - %d - %d - %s", r.RemoteAddr, r.Method, r.URL.Path, httpErr.HTTPCode, httpErr.Code, err.Error())
w.Header().Set("Content-Type", "application/json")
w.Header().Set("Access-Control-Allow-Origin", "*") // CORS, allow cross-origin requests
w.WriteHeader(e.HTTPCode)
io.WriteString(w, e.JSON()+"\n")
w.WriteHeader(httpErr.HTTPCode)
io.WriteString(w, httpErr.JSON()+"\n")
}
}
@ -404,6 +335,8 @@ func (s *Server) handleInternal(w http.ResponseWriter, r *http.Request) error {
return s.withRateLimit(w, r, s.handleSubscribeSSE)
} else if r.Method == http.MethodGet && rawPathRegex.MatchString(r.URL.Path) {
return s.withRateLimit(w, r, s.handleSubscribeRaw)
} else if r.Method == http.MethodGet && wsPathRegex.MatchString(r.URL.Path) {
return s.withRateLimit(w, r, s.handleSubscribeWS)
}
return errHTTPNotFound
}
@ -416,7 +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
@ -522,13 +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")
@ -599,29 +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
@ -705,7 +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 {
@ -719,7 +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 {
@ -729,33 +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)
@ -805,42 +716,119 @@ func (s *Server) handleSubscribe(w http.ResponseWriter, r *http.Request, v *visi
}
}
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)
func (s *Server) handleSubscribeWS(w http.ResponseWriter, r *http.Request, v *visitor) error {
if err := v.SubscriptionAllowed(); err != nil {
return errHTTPTooManyRequestsLimitSubscriptions
}
defer v.RemoveSubscription()
topics, topicsStr, err := s.topicsFromPath(r.URL.Path)
if err != nil {
return "", "", nil, nil, err
return err
}
priorityFilter = append(priorityFilter, priority)
poll, since, scheduled, filters, err := parseSubscribeParams(r)
if err != nil {
return err
}
return
upgrader := &websocket.Upgrader{
ReadBufferSize: wsBufferSize,
WriteBufferSize: wsBufferSize,
CheckOrigin: func(r *http.Request) bool {
return true // We're open for business!
},
}
conn, err := upgrader.Upgrade(w, r, nil)
if err != nil {
return err
}
defer conn.Close()
var wlock sync.Mutex
g, ctx := errgroup.WithContext(context.Background())
g.Go(func() error {
pongWait := s.config.KeepaliveInterval + wsPongWait
conn.SetReadLimit(wsReadLimit)
if err := conn.SetReadDeadline(time.Now().Add(pongWait)); err != nil {
return err
}
conn.SetPongHandler(func(appData string) error {
return conn.SetReadDeadline(time.Now().Add(pongWait))
})
for {
_, _, err := conn.NextReader()
if err != nil {
return err
}
}
})
g.Go(func() error {
ping := func() error {
wlock.Lock()
defer wlock.Unlock()
if err := conn.SetWriteDeadline(time.Now().Add(wsWriteWait)); err != nil {
return err
}
return conn.WriteMessage(websocket.PingMessage, nil)
}
for {
select {
case <-ctx.Done():
return nil
case <-time.After(s.config.KeepaliveInterval):
v.Keepalive()
if err := ping(); err != nil {
return err
}
}
}
})
sub := func(msg *message) error {
if !filters.Pass(msg) {
return nil
}
wlock.Lock()
defer wlock.Unlock()
if err := conn.SetWriteDeadline(time.Now().Add(wsWriteWait)); err != nil {
return err
}
return conn.WriteJSON(msg)
}
w.Header().Set("Access-Control-Allow-Origin", "*") // CORS, allow cross-origin requests
if poll {
return s.sendOldMessages(topics, since, scheduled, sub)
}
subscriberIDs := make([]int, 0)
for _, t := range topics {
subscriberIDs = append(subscriberIDs, t.Subscribe(sub))
}
defer func() {
for i, subscriberID := range subscriberIDs {
topics[i].Unsubscribe(subscriberID) // Order!
}
}()
if err := sub(newOpenMessage(topicsStr)); err != nil { // Send out open message
return err
}
if err := s.sendOldMessages(topics, since, scheduled, sub); err != nil {
return err
}
err = g.Wait()
if err != nil && websocket.IsCloseError(err, websocket.CloseNormalClosure, websocket.CloseGoingAway) {
return nil // Normal closures are not errors
}
return err
}
func passesQueryFilter(msg *message, messageFilter string, titleFilter string, priorityFilter []int, tagsFilter []string) bool {
if msg.Event != messageEvent {
return true // filters only apply to messages
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
}
if messageFilter != "" && msg.Message != messageFilter {
return false
filters, err = parseQueryFilters(r)
if err != nil {
return
}
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
return
}
func (s *Server) sendOldMessages(topics []*topic, since sinceTime, scheduled bool, sub subscriber) error {
@ -901,6 +889,19 @@ 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()
@ -1101,9 +1102,3 @@ 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++
}

5
server/server.yml
View File

@ -6,8 +6,9 @@
# base-url:
# Listen address for the HTTP & HTTPS web server. If "listen-https" is set, you must also
# set "key-file" and "cert-file". Format: <hostname>:<port>
# set "key-file" and "cert-file". Format: [<ip>]:<port>, e.g. "1.2.3.4:8080".
#
# To listen on all interfaces, you may omit the IP address, e.g. ":443".
# To disable HTTP, set "listen-http" to "-".
#
# listen-http: ":80"
@ -98,7 +99,7 @@
#
# Note that the Android app has a hardcoded timeout at 77s, so it should be less than that.
#
# keepalive-interval: "30s"
# keepalive-interval: "45s"
# Interval in which the manager prunes old messages, deletes topics
# and prints the stats.

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 100644
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 100644
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"])
}

3
test/server.go
View File

@ -5,6 +5,7 @@ import (
"heckel.io/ntfy/server"
"math/rand"
"net/http"
"path/filepath"
"testing"
"time"
)
@ -22,6 +23,8 @@ func StartServer(t *testing.T) (*server.Server, int) {
func StartServerWithConfig(t *testing.T, conf *server.Config) (*server.Server, int) {
port := 10000 + rand.Intn(20000)
conf.ListenHTTP = fmt.Sprintf(":%d", port)
conf.AttachmentCacheDir = t.TempDir()
conf.CacheFile = filepath.Join(t.TempDir(), "cache.db")
s, err := server.New(conf)
if err != nil {
t.Fatal(err)