/
checkers.go
148 lines (126 loc) · 3.28 KB
/
checkers.go
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// Copyright 2015 Keybase, Inc. All rights reserved. Use of
// this source code is governed by the included BSD license.
package libkb
import (
"fmt"
"regexp"
"strings"
"unicode"
"github.com/keybase/client/go/kbun"
)
var emailRE = regexp.MustCompile(`^\S+@\S+\.\S+$`)
// Also used in shared/signup/device-name/index.tsx
var deviceRE = regexp.MustCompile(`^[a-zA-Z0-9][ _'a-zA-Z0-9+‘’—–-]*$`)
var badDeviceRE = regexp.MustCompile(` |[ '_-]$|['_-][ ]?['_-]`)
var normalizeDeviceRE = regexp.MustCompile(`[^a-zA-Z0-9]`)
var CheckEmail = Checker{
F: func(s string) bool {
return len(s) > 3 && emailRE.MatchString(s)
},
Hint: "must be a valid email address",
}
var CheckUsername = Checker{
F: kbun.CheckUsername,
Hint: "between 2 and 16 characters long",
}
var CheckEmailOrUsername = Checker{
F: func(s string) bool {
return CheckEmail.F(s) || CheckUsername.F(s)
},
Hint: "valid usernames are 2-16 letters long",
}
var CheckPassphraseSimple = Checker{
F: func(s string) bool {
return len(s) > 0
},
Hint: "passphrase cannot be empty",
}
var CheckPassphraseNew = Checker{
F: func(s string) bool {
r := []rune(s)
if len(r) > 0 && unicode.IsSpace(r[0]) {
return false
}
return len(s) >= MinPassphraseLength
},
Hint: fmt.Sprintf("passphrase must be %d or more characters", MinPassphraseLength),
PreserveSpace: true,
}
var CheckInviteCode = Checker{
F: func(s string) bool {
return len(s) > 4
},
Hint: "Invite codes are 4 or more characters",
}
func normalizeDeviceName(s string) string {
return strings.ToLower(normalizeDeviceRE.ReplaceAllString(s, ""))
}
var CheckDeviceName = Checker{
F: func(s string) bool {
normalized := normalizeDeviceName(s)
return len(normalized) >= 3 &&
len(normalized) <= 64 &&
deviceRE.MatchString(s) &&
!badDeviceRE.MatchString(s)
},
Transform: func(s string) string {
s = strings.ReplaceAll(s, "—", "-") // em dash
s = strings.ReplaceAll(s, "–", "-") // en dash
s = strings.ReplaceAll(s, "‘", "'") // curly quote #1
s = strings.ReplaceAll(s, "’", "'") // curly quote #2
return s
},
Normalize: normalizeDeviceName,
Hint: "between 3 and 64 characters long; use a-Z, 0-9, space, plus, underscore, dash and apostrophe",
}
func MakeCheckKex2SecretPhrase(g *GlobalContext) Checker {
return Checker{
F: func(s string) bool {
if err := validPhrase(s, []int{Kex2PhraseEntropy, Kex2PhraseEntropy2}); err != nil {
g.Log.Debug("invalid kex2 phrase: %s", err)
return false
}
return true
},
Hint: "Wrong secret phrase. Please try again.",
}
}
func IsYes(s string) bool {
s = strings.ToLower(strings.TrimSpace(s))
return s == "y" || s == "yes"
}
func IsEmpty(s string) bool {
return len(strings.TrimSpace(s)) == 0
}
func IsNo(s string) bool {
s = strings.ToLower(strings.TrimSpace(s))
return s == "n" || s == "no"
}
var CheckYesNo = Checker{
F: func(s string) bool {
return IsYes(s) || IsNo(s)
},
Hint: "'yes' or 'no'",
}
var CheckNotEmpty = Checker{
F: func(s string) bool {
return len(s) > 0
},
Hint: "cannot be empty",
}
type CheckMember struct {
Set []string
}
func (c CheckMember) Checker() Checker {
return Checker{
F: func(s string) bool {
for _, v := range c.Set {
if Cicmp(v, s) {
return true
}
}
return false
},
Hint: strings.Join(c.Set, ", "),
}
}