Initial implementation

This commit is contained in:
Martin Polden 2012-11-19 19:12:59 +01:00
parent ef1f96598e
commit 0297203aa0

44
ifconfig.go Normal file
View File

@ -0,0 +1,44 @@
package main
import (
"fmt"
"io"
"log"
"net"
"net/http"
"regexp"
)
func isCli(userAgent string) bool {
match, _ := regexp.MatchString("^(?i)(curl|wget|fetch\\slibfetch)\\/.*$",
userAgent)
return match
}
func handler(w http.ResponseWriter, req *http.Request) {
if req.Method != "GET" {
http.Error(w, "Invalid request method", 405)
return
}
host, _, err := net.SplitHostPort(req.RemoteAddr)
if err != nil {
log.Printf("Failed to parse remote address: %s\n", req.RemoteAddr)
http.Error(w, "Failed to parse remote address", 500)
return
}
if isCli(req.UserAgent()) {
io.WriteString(w, fmt.Sprintf("%s\n", host))
} else {
// XXX: Render HTML
}
}
func main() {
http.HandleFunc("/", handler)
err := http.ListenAndServe(":8080", nil)
if err != nil {
log.Fatal("ListenAndServe: ", err)
}
}