mirror of
https://github.com/binwiederhier/ntfy.git
synced 2024-11-01 01:21:15 +01:00
305 lines
10 KiB
Go
305 lines
10 KiB
Go
package cmd
|
|
|
|
import (
|
|
"errors"
|
|
"fmt"
|
|
"github.com/urfave/cli/v2"
|
|
"heckel.io/ntfy/client"
|
|
"heckel.io/ntfy/log"
|
|
"heckel.io/ntfy/util"
|
|
"os"
|
|
"os/exec"
|
|
"os/user"
|
|
"path/filepath"
|
|
"sort"
|
|
"strings"
|
|
)
|
|
|
|
func init() {
|
|
commands = append(commands, cmdSubscribe)
|
|
}
|
|
|
|
const (
|
|
clientRootConfigFileUnixAbsolute = "/etc/ntfy/client.yml"
|
|
clientUserConfigFileUnixRelative = "ntfy/client.yml"
|
|
clientUserConfigFileWindowsRelative = "ntfy\\client.yml"
|
|
)
|
|
|
|
var flagsSubscribe = append(
|
|
flagsDefault,
|
|
&cli.StringFlag{Name: "config", Aliases: []string{"c"}, Usage: "client config file"},
|
|
&cli.StringFlag{Name: "since", Aliases: []string{"s"}, Usage: "return events since `SINCE` (Unix timestamp, or all)"},
|
|
&cli.StringFlag{Name: "user", Aliases: []string{"u"}, EnvVars: []string{"NTFY_USER"}, Usage: "username[:password] used to auth against the server"},
|
|
&cli.BoolFlag{Name: "from-config", Aliases: []string{"from_config", "C"}, Usage: "read subscriptions from config file (service mode)"},
|
|
&cli.BoolFlag{Name: "poll", Aliases: []string{"p"}, Usage: "return events and exit, do not listen for new events"},
|
|
&cli.BoolFlag{Name: "scheduled", Aliases: []string{"sched", "S"}, Usage: "also return scheduled/delayed events"},
|
|
)
|
|
|
|
var cmdSubscribe = &cli.Command{
|
|
Name: "subscribe",
|
|
Aliases: []string{"sub"},
|
|
Usage: "Subscribe to one or more topics on a ntfy server",
|
|
UsageText: "ntfy subscribe [OPTIONS..] [TOPIC]",
|
|
Action: execSubscribe,
|
|
Category: categoryClient,
|
|
Flags: flagsSubscribe,
|
|
Before: initLogFunc,
|
|
Description: `Subscribe to a topic from a ntfy server, and either print or execute a command for
|
|
every arriving message. There are 3 modes in which the command can be run:
|
|
|
|
ntfy subscribe TOPIC
|
|
This prints the JSON representation of every incoming message. It is useful when you
|
|
have a command that wants to stream-read incoming JSON messages. Unless --poll is passed,
|
|
this command stays open forever.
|
|
|
|
Examples:
|
|
ntfy subscribe mytopic # Prints JSON for incoming messages for ntfy.sh/mytopic
|
|
ntfy sub home.lan/backups # Subscribe to topic on different server
|
|
ntfy sub --poll home.lan/backups # Just query for latest messages and exit
|
|
ntfy sub -u phil:mypass secret # Subscribe with username/password
|
|
|
|
ntfy subscribe TOPIC COMMAND
|
|
This executes COMMAND for every incoming messages. The message fields are passed to the
|
|
command as environment variables:
|
|
|
|
Variable Aliases Description
|
|
--------------- --------------------- -----------------------------------
|
|
$NTFY_ID $id Unique message ID
|
|
$NTFY_TIME $time Unix timestamp of the message delivery
|
|
$NTFY_TOPIC $topic Topic name
|
|
$NTFY_MESSAGE $message, $m Message body
|
|
$NTFY_TITLE $title, $t Message title
|
|
$NTFY_PRIORITY $priority, $prio, $p Message priority (1=min, 5=max)
|
|
$NTFY_TAGS $tags, $tag, $ta Message tags (comma separated list)
|
|
$NTFY_RAW $raw Raw JSON message
|
|
|
|
Examples:
|
|
ntfy sub mytopic 'notify-send "$m"' # Execute command for incoming messages
|
|
ntfy sub topic1 myscript.sh # Execute script for incoming messages
|
|
|
|
ntfy subscribe --from-config
|
|
Service mode (used in ntfy-client.service). This reads the config file and sets up
|
|
subscriptions for every topic in the "subscribe:" block (see config file).
|
|
|
|
Examples:
|
|
ntfy sub --from-config # Read topics from config file
|
|
ntfy sub --config=myclient.yml --from-config # Read topics from alternate config file
|
|
|
|
` + clientCommandDescriptionSuffix,
|
|
}
|
|
|
|
func execSubscribe(c *cli.Context) error {
|
|
// Read config and options
|
|
conf, err := loadConfig(c)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
cl := client.New(conf)
|
|
since := c.String("since")
|
|
user := c.String("user")
|
|
poll := c.Bool("poll")
|
|
scheduled := c.Bool("scheduled")
|
|
fromConfig := c.Bool("from-config")
|
|
topic := c.Args().Get(0)
|
|
command := c.Args().Get(1)
|
|
if !fromConfig {
|
|
conf.Subscribe = nil // wipe if --from-config not passed
|
|
}
|
|
var options []client.SubscribeOption
|
|
if since != "" {
|
|
options = append(options, client.WithSince(since))
|
|
}
|
|
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 poll {
|
|
options = append(options, client.WithPoll())
|
|
}
|
|
if scheduled {
|
|
options = append(options, client.WithScheduled())
|
|
}
|
|
if topic == "" && len(conf.Subscribe) == 0 {
|
|
return errors.New("must specify topic, type 'ntfy subscribe --help' for help")
|
|
}
|
|
|
|
// Execute poll or subscribe
|
|
if poll {
|
|
return doPoll(c, cl, conf, topic, command, options...)
|
|
}
|
|
return doSubscribe(c, cl, conf, topic, command, options...)
|
|
}
|
|
|
|
func doPoll(c *cli.Context, cl *client.Client, conf *client.Config, topic, command string, options ...client.SubscribeOption) error {
|
|
for _, s := range conf.Subscribe { // may be nil
|
|
if err := doPollSingle(c, cl, s.Topic, s.Command, options...); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
if topic != "" {
|
|
if err := doPollSingle(c, cl, topic, command, options...); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func doPollSingle(c *cli.Context, cl *client.Client, topic, command string, options ...client.SubscribeOption) error {
|
|
messages, err := cl.Poll(topic, options...)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
for _, m := range messages {
|
|
printMessageOrRunCommand(c, m, command)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func doSubscribe(c *cli.Context, cl *client.Client, conf *client.Config, topic, command string, options ...client.SubscribeOption) error {
|
|
cmds := make(map[string]string) // Subscription ID -> command
|
|
for _, s := range conf.Subscribe { // May be nil
|
|
topicOptions := append(make([]client.SubscribeOption, 0), options...)
|
|
for filter, value := range s.If {
|
|
topicOptions = append(topicOptions, client.WithFilter(filter, value))
|
|
}
|
|
var user string
|
|
var password *string
|
|
if s.User != "" {
|
|
user = s.User
|
|
} else if conf.DefaultUser != "" {
|
|
user = conf.DefaultUser
|
|
}
|
|
if s.Password != nil {
|
|
password = s.Password
|
|
} else if conf.DefaultPassword != nil {
|
|
password = conf.DefaultPassword
|
|
}
|
|
if user != "" && password != nil {
|
|
topicOptions = append(topicOptions, client.WithBasicAuth(user, *password))
|
|
}
|
|
subscriptionID := cl.Subscribe(s.Topic, topicOptions...)
|
|
if s.Command != "" {
|
|
cmds[subscriptionID] = s.Command
|
|
} else if conf.DefaultCommand != "" {
|
|
cmds[subscriptionID] = conf.DefaultCommand
|
|
} else {
|
|
cmds[subscriptionID] = ""
|
|
}
|
|
}
|
|
if topic != "" {
|
|
subscriptionID := cl.Subscribe(topic, options...)
|
|
cmds[subscriptionID] = command
|
|
}
|
|
for m := range cl.Messages {
|
|
cmd, ok := cmds[m.SubscriptionID]
|
|
if !ok {
|
|
continue
|
|
}
|
|
log.Debug("%s Dispatching received message: %s", logMessagePrefix(m), m.Raw)
|
|
printMessageOrRunCommand(c, m, cmd)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func printMessageOrRunCommand(c *cli.Context, m *client.Message, command string) {
|
|
if command != "" {
|
|
runCommand(c, command, m)
|
|
} else {
|
|
log.Debug("%s Printing raw message", logMessagePrefix(m))
|
|
fmt.Fprintln(c.App.Writer, m.Raw)
|
|
}
|
|
}
|
|
|
|
func runCommand(c *cli.Context, command string, m *client.Message) {
|
|
if err := runCommandInternal(c, command, m); err != nil {
|
|
log.Warn("%s Command failed: %s", logMessagePrefix(m), err.Error())
|
|
}
|
|
}
|
|
|
|
func runCommandInternal(c *cli.Context, script string, m *client.Message) error {
|
|
scriptFile := fmt.Sprintf("%s/ntfy-subscribe-%s.%s", os.TempDir(), util.RandomString(10), scriptExt)
|
|
log.Debug("%s Running command '%s' via temporary script %s", logMessagePrefix(m), script, scriptFile)
|
|
script = scriptHeader + script
|
|
if err := os.WriteFile(scriptFile, []byte(script), 0700); err != nil {
|
|
return err
|
|
}
|
|
defer os.Remove(scriptFile)
|
|
log.Debug("%s Executing script %s", logMessagePrefix(m), scriptFile)
|
|
cmd := exec.Command(scriptLauncher[0], append(scriptLauncher[1:], scriptFile)...)
|
|
cmd.Stdin = c.App.Reader
|
|
cmd.Stdout = c.App.Writer
|
|
cmd.Stderr = c.App.ErrWriter
|
|
cmd.Env = envVars(m)
|
|
return cmd.Run()
|
|
}
|
|
|
|
func envVars(m *client.Message) []string {
|
|
env := make([]string, 0)
|
|
env = append(env, envVar(m.ID, "NTFY_ID", "id")...)
|
|
env = append(env, envVar(m.Topic, "NTFY_TOPIC", "topic")...)
|
|
env = append(env, envVar(fmt.Sprintf("%d", m.Time), "NTFY_TIME", "time")...)
|
|
env = append(env, envVar(m.Message, "NTFY_MESSAGE", "message", "m")...)
|
|
env = append(env, envVar(m.Title, "NTFY_TITLE", "title", "t")...)
|
|
env = append(env, envVar(fmt.Sprintf("%d", m.Priority), "NTFY_PRIORITY", "priority", "prio", "p")...)
|
|
env = append(env, envVar(strings.Join(m.Tags, ","), "NTFY_TAGS", "tags", "tag", "ta")...)
|
|
env = append(env, envVar(m.Raw, "NTFY_RAW", "raw")...)
|
|
sort.Strings(env)
|
|
if log.IsTrace() {
|
|
log.Trace("%s With environment:\n%s", logMessagePrefix(m), strings.Join(env, "\n"))
|
|
}
|
|
return append(os.Environ(), env...)
|
|
}
|
|
|
|
func envVar(value string, vars ...string) []string {
|
|
env := make([]string, 0)
|
|
for _, v := range vars {
|
|
env = append(env, fmt.Sprintf("%s=%s", v, value))
|
|
}
|
|
return env
|
|
}
|
|
|
|
func loadConfig(c *cli.Context) (*client.Config, error) {
|
|
filename := c.String("config")
|
|
if filename != "" {
|
|
return client.LoadConfig(filename)
|
|
}
|
|
configFile := defaultClientConfigFile()
|
|
if s, _ := os.Stat(configFile); s != nil {
|
|
return client.LoadConfig(configFile)
|
|
}
|
|
return client.NewConfig(), nil
|
|
}
|
|
|
|
//lint:ignore U1000 Conditionally used in different builds
|
|
func defaultClientConfigFileUnix() string {
|
|
u, _ := user.Current()
|
|
configFile := clientRootConfigFileUnixAbsolute
|
|
if u.Uid != "0" {
|
|
homeDir, _ := os.UserConfigDir()
|
|
return filepath.Join(homeDir, clientUserConfigFileUnixRelative)
|
|
}
|
|
return configFile
|
|
}
|
|
|
|
//lint:ignore U1000 Conditionally used in different builds
|
|
func defaultClientConfigFileWindows() string {
|
|
homeDir, _ := os.UserConfigDir()
|
|
return filepath.Join(homeDir, clientUserConfigFileWindowsRelative)
|
|
}
|
|
|
|
func logMessagePrefix(m *client.Message) string {
|
|
return fmt.Sprintf("%s/%s", util.ShortTopicURL(m.TopicURL), m.ID)
|
|
}
|