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Code Issues Releases Wiki Activity

Support numeric domain-parts, closes #24

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This commit is contained in:
James Hillyerd
2014-05-19 19:08:39 -07:00
parent 428dc6a286
commit 63084c67b9
2 changed files with 14 additions and 13 deletions
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13
smtpd/utils.go
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@@ -73,15 +73,14 @@ func ValidateDomainPart(domain string) bool {
}
prev := '.'
labelLen := 0
hasLetters := false
hasAlphaNum := false
for _, c := range domain {
switch {
case ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z') || c == '_':
case ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z') ||
('0' <= c && c <= '9') || c == '_':
// Must contain some of these to be a valid label
hasLetters = true
labelLen++
case '0' <= c && c <= '9':
hasAlphaNum = true
labelLen++
case c == '-':
if prev == '.' {
@@ -96,11 +95,11 @@ func ValidateDomainPart(domain string) bool {
if labelLen > 63 {
return false
}
if !hasLetters {
if !hasAlphaNum {
return false
}
labelLen = 0
hasLetters = false
hasAlphaNum = false
default:
// Unknown character
return false

6
smtpd/utils_test.go
View File

@@ -1,9 +1,10 @@
package smtpd
import (
"github.com/stretchr/testify/assert"
"strings"
"testing"
"github.com/stretchr/testify/assert"
)
func TestParseMailboxName(t *testing.T) {
@@ -74,9 +75,10 @@ func TestValidateDomain(t *testing.T) {
{"_domainkey.foo.com", true, "Underscores are allowed"},
{"bar.com.", true, "Must be able to end with a dot"},
{"ABC.6DBS.com", true, "Mixed case is OK"},
{"mail.123.com", true, "Number only label valid"},
{"123.com", true, "Number only label valid"},
{"google..com", false, "Double dot not valid"},
{".foo.com", false, "Cannot start with a dot"},
{"mail.123.com", false, "Number only label not valid"},
{"google\r.com", false, "Special chars not allowed"},
{"foo.-bar.com", false, "Label cannot start with hyphen"},
{"foo-.bar.com", false, "Label cannot end with hyphen"},