mirror of
https://github.com/StackExchange/dnscontrol.git
synced 2025-12-09 05:36:27 +08:00
73 lines
3 KiB
Go
73 lines
3 KiB
Go
package alidns
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import (
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"errors"
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"unicode"
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"github.com/StackExchange/dnscontrol/v4/models"
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"github.com/StackExchange/dnscontrol/v4/pkg/rejectif"
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)
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// isValidAliDNSString checks if a string contains only ASCII or Chinese characters.
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// Alibaba Cloud DNS allows: a-z, A-Z, 0-9, -, _, ., *, @, and Chinese characters (汉字).
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func isValidAliDNSString(s string) bool {
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for _, r := range s {
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if r > unicode.MaxASCII {
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// Allow CJK Unified Ideographs (Chinese characters): U+4E00 to U+9FFF
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// and CJK Extension A: U+3400 to U+4DBF
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if (r >= 0x4E00 && r <= 0x9FFF) || (r >= 0x3400 && r <= 0x4DBF) {
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continue
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}
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return false
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}
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}
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return true
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}
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// labelConstraint detects labels that contain non-ASCII characters except Chinese characters.
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func labelConstraint(rc *models.RecordConfig) error {
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if !isValidAliDNSString(rc.GetLabel()) {
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return errors.New("label contains non-ASCII characters (only Chinese is allowed)")
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}
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return nil
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}
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// targetConstraint detects target values that contain non-ASCII characters except Chinese characters.
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// This applies to CNAME, MX, NS, SRV targets.
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func targetConstraint(rc *models.RecordConfig) error {
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if !isValidAliDNSString(rc.GetTargetField()) {
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return errors.New("target contains non-ASCII characters (only Chinese is allowed)")
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}
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return nil
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}
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// ttlConstraint checks that TTL is within Alibaba Cloud's allowed range (600-86400 seconds).
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func ttlConstraint(rc *models.RecordConfig) error {
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if rc.TTL < 600 {
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return errors.New("TTL must be at least 600 seconds")
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}
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if rc.TTL > 86400 {
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return errors.New("TTL must not exceed 86400 seconds (24 hours)")
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}
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return nil
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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 at 2025-12-03
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a.Add("TXT", rejectif.TxtIsEmpty) // Last verified at 2025-12-03
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a.Add("TXT", rejectif.TxtLongerThan(512)) // Last verified at 2025-12-03: 511 bytes OK, 764 bytes failed
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a.Add("TXT", rejectif.TxtHasDoubleQuotes) // Last verified at 2025-12-03: Alibaba strips quotes
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a.Add("TXT", rejectif.TxtHasTrailingSpace) // Last verified at 2025-12-03: Alibaba strips trailing spaces
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a.Add("TXT", rejectif.TxtHasUnpairedBackslash) // Last verified at 2025-12-03: Alibaba mishandles odd backslashes
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a.Add("*", labelConstraint) // Last verified at 2025-12-03: Alibaba only allows ASCII + Chinese, rejects other Unicode
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a.Add("*", ttlConstraint) // Last verified at 2025-12-03: Alibaba requires TTL 600-86400
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a.Add("CNAME", targetConstraint) // Last verified at 2025-12-03: CNAME target must be ASCII or Chinese
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a.Add("SRV", rejectif.SrvHasNullTarget) // Last verified at 2025-12-03: SRV target must not be null
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a.Add("SRV", rejectif.SrvHasEmptyTarget) // Last verified at 2025-12-03: SRV target must not be empty
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return a.Audit(records)
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}
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