feed-to-muc/feed-to-muc.go

153 lines
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2018-07-13 22:53:22 +02:00
/* Copyright 2018 Martin Dosch
Licensed under the "MIT License" */
package main
import (
"encoding/json"
"log"
"os"
"os/user"
"strings"
"time"
"github.com/mattn/go-xmpp"
)
func main() {
var err error
var configPath string
type configuration struct {
ServerAddress string
BotJid string
Password string
Muc string
MucNick string
MaxArticles int
Feeds []string
}
// Get systems user config path.
osConfigDir := os.Getenv("$XDG_CONFIG_HOME")
if osConfigDir != "" {
// Create configPath if not yet existing.
configPath = osConfigDir + "/.config/feed-to-muc/"
if _, err := os.Stat(configPath); os.IsNotExist(err) {
err = os.MkdirAll(configPath, 0700)
if err != nil {
log.Fatal("Error: ", err)
}
}
} else { // Get the current user.
curUser, err := user.Current()
if err != nil {
log.Fatal("Error: ", err)
return
}
// Get home directory.
home := curUser.HomeDir
if home == "" {
log.Fatal("Error: No home directory available.")
return
}
// Create configPath if not yet existing.
configPath = home + "/.config/feed-to-muc/"
if _, err := os.Stat(configPath + "config.json"); os.IsNotExist(err) {
err = os.MkdirAll(configPath, 0700)
if err != nil {
log.Fatal("Error: ", err)
}
}
}
// Check that config file is existing.
if _, err := os.Stat(configPath + "config.json"); os.IsNotExist(err) {
log.Fatal("Error: ", err)
}
// Read configuration file into variable config.
file, _ := os.Open(configPath + "config.json")
defer file.Close()
decoder := json.NewDecoder(file)
config := configuration{}
if err := decoder.Decode(&config); err != nil {
log.Fatal("Error: ", err)
}
if _, err := os.Stat(configPath + "config.json"); os.IsNotExist(err) {
err = os.MkdirAll(configPath, 0700)
if err != nil {
log.Fatal("Error: ", err)
}
}
var client *xmpp.Client
options := xmpp.Options{
Host: config.ServerAddress,
User: config.BotJid,
Password: config.Password,
NoTLS: true,
StartTLS: true,
Debug: false,
}
client, err = options.NewClient()
if err != nil {
log.Fatal(err)
}
// Starting goroutine to ping the server every 30 seconds.
go ping(client, config.ServerAddress, config.BotJid)
// Join the MUC
mucStatus, err := client.JoinMUCNoHistory(config.Muc, config.MucNick)
if err != nil {
log.Fatal(err)
}
// Exit if Status is > 300, see https://xmpp.org/registrar/mucstatus.html
if mucStatus > 300 {
os.Exit(mucStatus)
}
for {
_, err := client.Recv()
if err != nil {
log.Fatal(err)
}
for i := 0; i < len(config.Feeds); i++ {
output, err := getArticles(config.Feeds[i], config.MaxArticles, configPath)
if err != nil {
log.Fatal(err)
}
if output != "" {
_, err = client.Send(xmpp.Chat{Remote: config.Muc, Type: "groupchat", Text: output})
}
if err != nil {
log.Fatal(err)
}
}
time.Sleep(30 * time.Second)
}
}
// Send a ping every 30 seconds to check if the server is still available.
func ping(client *xmpp.Client, server string, botJid string) {
for {
time.Sleep(30 * time.Second)
err := client.PingC2S(botJid, strings.Split(server, ":")[0])
if err != nil {
log.Fatal(err)
}
}
}