package cmd import ( "errors" "fmt" "github.com/urfave/cli/v2" "heckel.io/ntfy/client" "heckel.io/ntfy/log" "heckel.io/ntfy/server" "heckel.io/ntfy/util" "io" "os" "os/exec" "path/filepath" "strings" "time" ) func init() { commands = append(commands, cmdPublish) } var flagsPublish = append( flagsDefault, &cli.StringFlag{Name: "config", Aliases: []string{"c"}, EnvVars: []string{"NTFY_CONFIG"}, Usage: "client config file"}, &cli.StringFlag{Name: "title", Aliases: []string{"t"}, EnvVars: []string{"NTFY_TITLE"}, Usage: "message title"}, &cli.StringFlag{Name: "message", Aliases: []string{"m"}, EnvVars: []string{"NTFY_MESSAGE"}, Usage: "message body"}, &cli.StringFlag{Name: "priority", Aliases: []string{"p"}, EnvVars: []string{"NTFY_PRIORITY"}, Usage: "priority of the message (1=min, 2=low, 3=default, 4=high, 5=max)"}, &cli.StringFlag{Name: "tags", Aliases: []string{"tag", "T"}, EnvVars: []string{"NTFY_TAGS"}, Usage: "comma separated list of tags and emojis"}, &cli.StringFlag{Name: "delay", Aliases: []string{"at", "in", "D"}, EnvVars: []string{"NTFY_DELAY"}, Usage: "delay/schedule message"}, &cli.StringFlag{Name: "click", Aliases: []string{"U"}, EnvVars: []string{"NTFY_CLICK"}, Usage: "URL to open when notification is clicked"}, &cli.StringFlag{Name: "icon", Aliases: []string{"i"}, EnvVars: []string{"NTFY_ICON"}, Usage: "URL to use as notification icon"}, &cli.StringFlag{Name: "actions", Aliases: []string{"A"}, EnvVars: []string{"NTFY_ACTIONS"}, Usage: "actions JSON array or simple definition"}, &cli.StringFlag{Name: "attach", Aliases: []string{"a"}, EnvVars: []string{"NTFY_ATTACH"}, Usage: "URL to send as an external attachment"}, &cli.StringFlag{Name: "filename", Aliases: []string{"name", "n"}, EnvVars: []string{"NTFY_FILENAME"}, Usage: "filename for the attachment"}, &cli.StringFlag{Name: "file", Aliases: []string{"f"}, EnvVars: []string{"NTFY_FILE"}, Usage: "file to upload as an attachment"}, &cli.StringFlag{Name: "email", Aliases: []string{"mail", "e"}, EnvVars: []string{"NTFY_EMAIL"}, Usage: "also send to e-mail address"}, &cli.StringFlag{Name: "user", Aliases: []string{"u"}, EnvVars: []string{"NTFY_USER"}, Usage: "username[:password] used to auth against the server"}, &cli.IntFlag{Name: "wait-pid", Aliases: []string{"wait_pid", "pid"}, EnvVars: []string{"NTFY_WAIT_PID"}, Usage: "wait until PID exits before publishing"}, &cli.BoolFlag{Name: "wait-cmd", Aliases: []string{"wait_cmd", "cmd", "done"}, EnvVars: []string{"NTFY_WAIT_CMD"}, Usage: "run command and wait until it finishes before publishing"}, &cli.BoolFlag{Name: "no-cache", Aliases: []string{"no_cache", "C"}, EnvVars: []string{"NTFY_NO_CACHE"}, Usage: "do not cache message server-side"}, &cli.BoolFlag{Name: "no-firebase", Aliases: []string{"no_firebase", "F"}, EnvVars: []string{"NTFY_NO_FIREBASE"}, Usage: "do not forward message to Firebase"}, &cli.BoolFlag{Name: "env-topic", Aliases: []string{"env_topic", "P"}, EnvVars: []string{"NTFY_ENV_TOPIC"}, Usage: "use topic from NTFY_TOPIC env variable"}, &cli.BoolFlag{Name: "quiet", Aliases: []string{"q"}, EnvVars: []string{"NTFY_QUIET"}, Usage: "do not print message"}, ) var cmdPublish = &cli.Command{ Name: "publish", Aliases: []string{"pub", "send", "trigger"}, Usage: "Send message via a ntfy server", UsageText: `ntfy publish [OPTIONS..] TOPIC [MESSAGE...] ntfy publish [OPTIONS..] --wait-cmd COMMAND... NTFY_TOPIC=.. ntfy publish [OPTIONS..] -P [MESSAGE...]`, Action: execPublish, Category: categoryClient, Flags: flagsPublish, Before: initLogFunc, Description: `Publish a message to a ntfy server. Examples: ntfy publish mytopic This is my message # Send simple message ntfy send myserver.com/mytopic "This is my message" # Send message to different default host ntfy pub -p high backups "Backups failed" # Send high priority message ntfy pub --tags=warning,skull backups "Backups failed" # Add tags/emojis to message ntfy pub --delay=10s delayed_topic Laterzz # Delay message by 10s ntfy pub --at=8:30am delayed_topic Laterzz # Send message at 8:30am ntfy pub -e phil@example.com alerts 'App is down!' # Also send email to phil@example.com ntfy pub --click="https://reddit.com" redd 'New msg' # Opens Reddit when notification is clicked ntfy pub --icon="http://some.tld/icon.png" 'Icon!' # Send notification with custom icon ntfy pub --attach="http://some.tld/file.zip" files # Send ZIP archive from URL as attachment ntfy pub --file=flower.jpg flowers 'Nice!' # Send image.jpg as attachment ntfy pub -u phil:mypass secret Psst # Publish with username/password ntfy pub --wait-pid 1234 mytopic # Wait for process 1234 to exit before publishing ntfy pub --wait-cmd mytopic rsync -av ./ /tmp/a # Run command and publish after it completes NTFY_USER=phil:mypass ntfy pub secret Psst # Use env variables to set username/password NTFY_TOPIC=mytopic ntfy pub -P "some message" # Use NTFY_TOPIC variable as topic cat flower.jpg | ntfy pub --file=- flowers 'Nice!' # Same as above, send image.jpg as attachment ntfy trigger mywebhook # Sending without message, useful for webhooks Please also check out the docs on publishing messages. Especially for the --tags and --delay options, it has incredibly useful information: https://ntfy.sh/docs/publish/. ` + clientCommandDescriptionSuffix, } func execPublish(c *cli.Context) error { conf, err := loadConfig(c) if err != nil { return err } title := c.String("title") priority := c.String("priority") tags := c.String("tags") delay := c.String("delay") click := c.String("click") icon := c.String("icon") actions := c.String("actions") attach := c.String("attach") filename := c.String("filename") file := c.String("file") email := c.String("email") user := c.String("user") noCache := c.Bool("no-cache") noFirebase := c.Bool("no-firebase") quiet := c.Bool("quiet") pid := c.Int("wait-pid") password := os.Getenv("NTFY_PASSWORD") topic, message, command, err := parseTopicMessageCommand(c) if err != nil { return err } pm := &server.PublishMessage{ Topic: topic, Title: title, Message: message, Tags: util.SplitNoEmpty(tags, ","), Click: click, Actions: nil, Attach: attach, Filename: filename, Email: email, Delay: delay, } var options []client.PublishOption p, err := util.ParsePriority(priority) if err != nil { return err } pm.Priority = p if icon != "" { options = append(options, client.WithIcon(icon)) } if actions != "" { options = append(options, client.WithActions(strings.ReplaceAll(actions, "\n", " "))) } if noCache { options = append(options, client.WithNoCache()) } if noFirebase { options = append(options, client.WithNoFirebase()) } if user != "" { var pass string parts := strings.SplitN(user, ":", 2) if len(parts) == 2 { user = parts[0] pass = parts[1] } else { fmt.Fprint(c.App.ErrWriter, "Enter Password: ") p, err := util.ReadPassword(c.App.Reader) if err != nil { return err } pass = string(p) fmt.Fprintf(c.App.ErrWriter, "\r%s\r", strings.Repeat(" ", 20)) } options = append(options, client.WithBasicAuth(user, pass)) } if pid > 0 { newMessage, err := waitForProcess(pid) if err != nil { return err } else if pm.Message == "" { pm.Message = newMessage } } else if len(command) > 0 { newMessage, err := runAndWaitForCommand(command) if err != nil { return err } else if pm.Message == "" { pm.Message = newMessage } } var body io.Reader if file == "" { body = strings.NewReader(message) } else { if message != "" { options = append(options, client.WithMessage(message)) } if file == "-" { if filename == "" { options = append(options, client.WithFilename("stdin")) } body = c.App.Reader } else { if filename == "" { options = append(options, client.WithFilename(filepath.Base(file))) } body, err = os.Open(file) if err != nil { return err } } } var m *client.Message cl := client.New(conf) if password != "" { if m, err = cl.PublishEncryptedReader(topic, m, password, options...); err != nil { return err } } else { if m, err = cl.PublishReader(topic, m, options...); err != nil { return err } } if !quiet { fmt.Fprintln(c.App.Writer, strings.TrimSpace(m.Raw)) } return nil } // parseTopicMessageCommand reads the topic and the remaining arguments from the context. // // There are a few cases to consider: // // ntfy publish [] // ntfy publish --wait-cmd // NTFY_TOPIC=.. ntfy publish [] // NTFY_TOPIC=.. ntfy publish --wait-cmd func parseTopicMessageCommand(c *cli.Context) (topic string, message string, command []string, err error) { var args []string topic, args, err = parseTopicAndArgs(c) if err != nil { return } if c.Bool("wait-cmd") { if len(args) == 0 { err = errors.New("must specify command when --wait-cmd is passed, type 'ntfy publish --help' for help") return } command = args } else { message = strings.Join(args, " ") } if c.String("message") != "" { message = c.String("message") } return } func parseTopicAndArgs(c *cli.Context) (topic string, args []string, err error) { envTopic := c.Bool("env-topic") if envTopic { fmt.Fprintln(c.App.ErrWriter, "\x1b[1;33mDeprecation notice: The --env-topic/-P flag will be removed in July 2022, see https://ntfy.sh/docs/deprecations/ for details.\x1b[0m") topic = os.Getenv("NTFY_TOPIC") if topic == "" { return "", nil, errors.New("when --env-topic is passed, must define NTFY_TOPIC environment variable") } return topic, remainingArgs(c, 0), nil } if c.NArg() < 1 { return "", nil, errors.New("must specify topic, type 'ntfy publish --help' for help") } return c.Args().Get(0), remainingArgs(c, 1), nil } func remainingArgs(c *cli.Context, fromIndex int) []string { if c.NArg() > fromIndex { return c.Args().Slice()[fromIndex:] } return []string{} } func waitForProcess(pid int) (message string, err error) { if !processExists(pid) { return "", fmt.Errorf("process with PID %d not running", pid) } start := time.Now() log.Debug("Waiting for process with PID %d to exit", pid) for processExists(pid) { time.Sleep(500 * time.Millisecond) } runtime := time.Since(start).Round(time.Millisecond) log.Debug("Process with PID %d exited after %s", pid, runtime) return fmt.Sprintf("Process with PID %d exited after %s", pid, runtime), nil } func runAndWaitForCommand(command []string) (message string, err error) { prettyCmd := util.QuoteCommand(command) log.Debug("Running command: %s", prettyCmd) start := time.Now() cmd := exec.Command(command[0], command[1:]...) if log.IsTrace() { cmd.Stdout = os.Stdout cmd.Stderr = os.Stderr } err = cmd.Run() runtime := time.Since(start).Round(time.Millisecond) if err != nil { if exitError, ok := err.(*exec.ExitError); ok { log.Debug("Command failed after %s (exit code %d): %s", runtime, exitError.ExitCode(), prettyCmd) return fmt.Sprintf("Command failed after %s (exit code %d): %s", runtime, exitError.ExitCode(), prettyCmd), nil } // Hard fail when command does not exist or could not be properly launched return "", fmt.Errorf("command failed: %s, error: %s", prettyCmd, err.Error()) } log.Debug("Command succeeded after %s: %s", runtime, prettyCmd) return fmt.Sprintf("Command succeeded after %s: %s", runtime, prettyCmd), nil }