gopaste/paste.go

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2018-11-29 14:57:07 +00:00
package main
import (
"crypto/md5"
"encoding/base64"
"html/template"
"io/ioutil"
"log"
"net/http"
)
func main() {
// Take user input, save it
http.HandleFunc("/create", createPost)
// Retrieve that, display it
http.HandleFunc("/post/", viewPost)
// Show an editor
http.HandleFunc("/", viewEditor)
log.Print("Listening...")
log.Fatal(http.ListenAndServe(":8888", nil))
}
func viewPost(w http.ResponseWriter, r *http.Request) {
log.Print(r.URL.Path)
id := r.URL.Path[len("/post/"):]
data, err := ioutil.ReadFile(id + ".txt")
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
t, err := template.ParseFiles("post.html")
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
t.Execute(w, string(data))
}
func createPost(w http.ResponseWriter, r *http.Request) {
log.Print(r.URL.Path)
data := r.FormValue("stuff")
h := md5.New()
idHash := h.Sum([]byte(data))
id := base64.StdEncoding.EncodeToString(idHash)
err := ioutil.WriteFile(id+".txt", []byte(data), 0600)
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
http.Redirect(w, r, "/post/"+id, http.StatusFound)
}
func viewEditor(w http.ResponseWriter, r *http.Request) {
log.Print(r.URL.Path)
// Display editor
t, err := template.ParseFiles("editor.html")
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
t.Execute(w, nil)
}