53
package main
import (
"bytes"
"fmt"
"net/http"
"os"
"os/exec"
"path/filepath"
"strings"
)
func main() {
http.HandleFunc("/cgi-bin/man/", handleWIS)
http.HandleFunc("/style.css", func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "text/css; charset=utf-8")
w.WriteHeader(http.StatusOK)
b, _ := os.ReadFile("style.css")
w.Write(b)
b, _ = os.ReadFile("font.css")
w.Write(b)
})
http.Handle("/", http.RedirectHandler("/cgi-bin/man/man2html", http.StatusTemporaryRedirect))
http.ListenAndServe("0.0.0.0:1234", nil)
}
func handleWIS(w http.ResponseWriter, r *http.Request) {
exe := filepath.Base(r.URL.Path)
if !(exe == "man2html" || exe == "mansearch" || exe == "mansec" || exe == "manwhatis") {
http.Redirect(w, r, "/cgi-bin/man/man2html", http.StatusTemporaryRedirect)
return
}
q := ""
if strings.Contains(r.URL.String(), "?") {
q = strings.SplitN(r.URL.String(), "?", 2)[1]
}
cmd := exec.Command("/usr/lib/cgi-bin/man/" + exe)
var buff bytes.Buffer
cmd.Env = append(cmd.Env, "QUERY_STRING="+q, "REQUEST_METHOD="+r.Method, "SERVER_NAME=localhost:1234")
cmd.Env = append(cmd.Env, "MANPATH=/usr/man:/usr/share/man:/usr/local/man:/usr/local/share/man:/usr/X11R6/man:/opt/man:/snap/man")
cmd.Stdout = &buff
err := cmd.Run()
if err != nil {
http.Redirect(w, r, "/cgi-bin/man/man2html", http.StatusTemporaryRedirect)
return
}
w.Header().Set("Content-Type", "text/html; charset=utf-8")
w.WriteHeader(http.StatusOK)
page := buff.String()
page = page[strings.Index(page, "<!"):]
i := strings.Index(page, "</HEAD>")
fmt.Fprint(w, page[:i], `<link rel="stylesheet" href="/style.css">`, page[i:])
}