spongy/chunktail.cgi.go

74 lines
1.3 KiB
Go

package main
import (
"fmt"
"log"
"os"
"bufio"
"strconv"
"net/http"
"net/http/cgi"
"time"
)
type Handler struct {
cgi.Handler
}
func tail(w http.ResponseWriter, pos int) {
f, err := os.Open("/home/neale/bot/neale/log/log")
if err != nil {
log.Fatal(err)
}
defer f.Close()
_, err = f.Seek(int64(pos), 0)
if err != nil {
log.Fatal(err)
}
bf := bufio.NewScanner(f)
for bf.Scan() {
t := bf.Text()
pos += len(t) + 1 // XXX: this breaks if we ever see \r\n
fmt.Fprintf(w, "data: %s\n", t)
}
fmt.Fprintf(w, "id: %d\n\n", pos)
}
func handleCommand(w http.ResponseWriter, text string) {
fn := fmt.Sprintf("/home/neale/bot/neale/outq/cgi.%d", time.Now().Unix())
f, err := os.Create(fn)
if err != nil {
fmt.Fprintln(w, "NO")
fmt.Fprintln(w, err)
return
}
defer f.Close()
fmt.Fprintf(f, "PRIVMSG #tron :%s\n", text)
fmt.Fprintln(w, "OK")
}
func (h Handler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
switch r.FormValue("type") {
case "command":
w.Header().Set("Content-Type", "text/plain")
handleCommand(w, r.Form.Get("text"))
default:
w.Header().Set("Content-Type", "text/event-stream")
id, _ := strconv.Atoi(os.Getenv("HTTP_LAST_EVENT_ID"))
tail(w, id)
}
}
func main() {
h := Handler{}
if err := cgi.Serve(h); err != nil {
log.Fatal(err)
}
}