mirror of
https://github.com/StackExchange/dnscontrol.git
synced 2024-09-20 23:06:23 +08:00
50 lines
1.4 KiB
Go
50 lines
1.4 KiB
Go
package namedotcom
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import (
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"fmt"
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"strings"
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"github.com/StackExchange/dnscontrol/v3/models"
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"github.com/StackExchange/dnscontrol/v3/pkg/rejectif"
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)
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// AuditRecords returns a list of errors corresponding to the records
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// that aren't supported by this provider. If all records are
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// supported, an empty list is returned.
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func AuditRecords(records []*models.RecordConfig) []error {
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a := rejectif.Auditor{}
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a.Add("MX", rejectif.MxNull) // Last verified 2020-12-28
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a.Add("SRV", rejectif.SrvHasNullTarget) // Last verified 2020-12-28
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a.Add("TXT", MaxLengthNDC) // Last verified 2021-03-01
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a.Add("TXT", rejectif.TxtIsEmpty) // Last verified 2021-03-01
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return a.Audit(records)
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}
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// MaxLengthNDC returns and error if the sum of the strings
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// are longer than permitted by NDC. Sadly their
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// length limit is undocumented. This seems to work.
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func MaxLengthNDC(rc *models.RecordConfig) error {
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if len(rc.TxtStrings) == 0 {
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return nil
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}
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sum := 2 // Count the start and end quote.
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// Add the length of each segment.
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for _, segment := range rc.TxtStrings {
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sum += len(segment) // The length of each segment
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sum += strings.Count(segment, `"`) // Add 1 for any char to be escaped
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}
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// Add 3 (quote space quote) for each interior join.
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sum += 3 * (len(rc.TxtStrings) - 1)
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if sum > 512 {
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return fmt.Errorf("encoded txt too long")
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}
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return nil
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}
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