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postlisk.go
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postlisk.go
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package main
import (
"errors"
"flag"
"io/ioutil"
"log"
"net/http"
"net/url"
"strings"
)
func postTo(zurl, auth, to, subject, content string) error {
form := make(url.Values)
form.Add("type", "stream")
form.Add("to", to)
form.Add("subject", subject)
form.Add("content", content)
req, err := http.NewRequest("POST", zurl, strings.NewReader(form.Encode()))
if err != nil {
return err
}
authz := strings.Split(auth, ":")
req.SetBasicAuth(authz[0], authz[1])
req.Header.Add("Content-Type", "application/x-www-form-urlencoded")
r, err := http.DefaultClient.Do(req)
if err != nil {
return err
}
resp, err := ioutil.ReadAll(r.Body)
if err != nil {
return err
}
log.Printf("Responed %d %s", r.StatusCode, string(resp))
return nil
}
func main() {
bind := flag.String("bind", "0.0.0.0:8000", "listening address")
zurl := flag.String("zulip_url", "", "eg. example.zulip.com/api/v1/messages")
auth := flag.String("auth", "", "user:password")
defaultTo := flag.String("to", "bot", "default channel")
defaultSubject := flag.String("subject", "uncategorized", "default subject")
flag.Parse()
authz := strings.Split(*auth, ":")
if len(authz) != 2 {
panic(errors.New("invalid auth input"))
}
http.DefaultServeMux.HandleFunc("/post", func(w http.ResponseWriter, r *http.Request) {
err := r.ParseForm()
if err != nil {
log.Println(err.Error())
w.WriteHeader(400)
return
}
to := r.Form.Get("to")
subject := r.Form.Get("subject")
content := r.Form.Get("content")
if content == "" {
w.WriteHeader(400)
return
}
if to == "" {
to = *defaultTo
}
if subject == "" {
subject = *defaultSubject
}
log.Printf("Sending to '%s' '%s': %s\n", to, subject, content)
err = postTo(*zurl, *auth, to, subject, content)
if err != nil {
log.Printf("Error: %s\n", err.Error())
w.WriteHeader(500)
} else {
w.WriteHeader(200)
}
})
err := http.ListenAndServe(*bind, nil)
if err != nil {
panic(err)
}
}
// TODO CF-Connecting-IP