internal/httpd/confirm.go

 1package httpd
 2
 3import (
 4	"net/http"
 5	"strings"
 6)
 7
 8// confirmed reports whether the form typed want into its confirm field.
 9// It guards controls that destroy data nothing else holds; the person
10// is already authorised, so this is a check against a slip, not a
11// permission.
12func confirmed(r *http.Request, want string) (bool, string) {
13	if strings.TrimSpace(r.FormValue("confirm")) == want {
14		return true, ""
15	}
16	return false, "type " + want + " to confirm"
17}
18
19// prefix8 returns s truncated to its first 8 characters, or s unchanged
20// if it is shorter.
21func prefix8(s string) string {
22	if len(s) > 8 {
23		return s[:8]
24	}
25	return s
26}