44 lines
997 B
Go
44 lines
997 B
Go
/*
|
|
* Copyright © 2020-2021 A Bunch Tell LLC.
|
|
*
|
|
* This file is part of WriteFreely.
|
|
*
|
|
* WriteFreely is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU Affero General Public License, included
|
|
* in the LICENSE file in this source code package.
|
|
*/
|
|
|
|
package spam
|
|
|
|
import (
|
|
"github.com/writeas/web-core/id"
|
|
"strings"
|
|
)
|
|
|
|
var honeypotField string
|
|
|
|
func HoneypotFieldName() string {
|
|
if honeypotField == "" {
|
|
honeypotField = id.Generate62RandomString(39)
|
|
}
|
|
return honeypotField
|
|
}
|
|
|
|
// CleanEmail takes an email address and strips it down to a unique address that can be blocked.
|
|
func CleanEmail(email string) string {
|
|
emailParts := strings.Split(strings.ToLower(email), "@")
|
|
if len(emailParts) < 2 {
|
|
return ""
|
|
}
|
|
u := emailParts[0]
|
|
d := emailParts[1]
|
|
// Ignore anything after '+'
|
|
plusIdx := strings.IndexRune(u, '+')
|
|
if plusIdx > -1 {
|
|
u = u[:plusIdx]
|
|
}
|
|
// Strip dots in email address
|
|
u = strings.ReplaceAll(u, ".", "")
|
|
return u + "@" + d
|
|
}
|