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ALIDNS: Add TXT record validation

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artin 2025-12-03 03:16:48 +08:00
parent 77b8b53227
commit 51492f802c
3 changed files with 30 additions and 9 deletions
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23
pkg/rejectif/txt.go
View file

@ -18,6 +18,29 @@ func TxtHasBackslash(rc *models.RecordConfig) error {
return nil
}
// TxtHasUnpairedBackslash audits TXT records for strings that contain an odd number of consecutive backslashes.
// Some providers strip single backslashes or convert odd consecutive backslashes to even.
// e.g., "1back\slash" -> "1backslash", "3back\\\slash" -> "3back\\slash"
func TxtHasUnpairedBackslash(rc *models.RecordConfig) error {
txt := rc.GetTargetTXTJoined()
i := 0
for i < len(txt) {
if txt[i] == '\\' {
count := 0
for i < len(txt) && txt[i] == '\\' {
count++
i++
}
if count%2 == 1 {
return errors.New("txtstring contains unpaired backslash (odd count)")
}
} else {
i++
}
}
return nil
}
// TxtHasBackticks audits TXT records for strings that contain backticks.
func TxtHasBackticks(rc *models.RecordConfig) error {
if strings.Contains(rc.GetTargetTXTJoined(), "`") {

7
providers/alidns/api.go
View file

@ -51,15 +51,10 @@ func (a *aliDnsDsp) createRecordset(records []*models.RecordConfig, domainName s
req.Priority = requests.Integer(fmt.Sprintf("%d", recordToNativePriority(r)))
}
fmt.Printf("DEBUG createRecordset: domain=%s, RR=%s, Type=%s, Value=%s, TTL=%s\n",
req.DomainName, req.RR, req.Type, req.Value, req.TTL)
resp, err := a.client.AddDomainRecord(req)
_, err := a.client.AddDomainRecord(req)
if err != nil {
fmt.Printf("DEBUG createRecordset error: %v\n", err)
return err
}
fmt.Printf("DEBUG createRecordset success: RecordId=%s\n", resp.RecordId)
}
return nil
}

3
providers/alidns/auditrecords.go
View file

@ -14,5 +14,8 @@ func AuditRecords(records []*models.RecordConfig) []error {
a.Add("MX", rejectif.MxNull) // Last verified at 2025-12-03
a.Add("TXT", rejectif.TxtIsEmpty) // Last verified at 2025-12-03
a.Add("TXT", rejectif.TxtLongerThan(512)) // Last verified at 2025-12-03: 511 bytes OK, 764 bytes failed
a.Add("TXT", rejectif.TxtHasDoubleQuotes) // Last verified at 2025-12-03: Alibaba strips quotes
a.Add("TXT", rejectif.TxtHasTrailingSpace) // Last verified at 2025-12-03: Alibaba strips trailing spaces
a.Add("TXT", rejectif.TxtHasUnpairedBackslash) // Last verified at 2025-12-03: Alibaba mishandles odd backslashes
return a.Audit(records)
}