66
package main
import (
"bytes"
_ "embed"
"fmt"
"net/http"
"os/exec"
"path/filepath"
"strings"
)
//go:embed font.css
var font []byte
//go:embed dark_theme.css
var css []byte
func init() {
css = append(css, font...)
}
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.Header().Set("Content-Length", fmt.Sprint(len(css)))
w.WriteHeader(http.StatusOK)
w.Write(css)
})
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>")
if i == -1 {
i = strings.Index(page, "</head>")
}
fmt.Fprintln(w, page[:i])
fmt.Fprintln(w, `<link rel="stylesheet" href="/style.css">`)
fmt.Fprintln(w, page[i:])
}