Copied some funcs to wait.go

pkg/dns/solver_local.go

@@ -10,7 +10,7 @@ import (
 
 	"github.com/cert-manager/cert-manager/pkg/acme/webhook/apis/acme/v1alpha1"
 	//"github.com/cert-manager/cert-manager/pkg/issuer/acme/dns/util"
-	"github.com/stuurmcp/cert-manager-webhook-sthome/pkg/dns/util"
+	"github.com/stuurmcp/cert-manager-webhook-sthome/pkg/util"
 )
 
 var (

pkg/util/wait.go

@@ -520,3 +520,45 @@ func WaitFor(timeout, interval time.Duration, f func() (bool, error)) error {
 		time.Sleep(interval)
 	}
 }
+
+// DNS01LookupFQDN returns a DNS name which will be updated to solve the dns-01
+// challenge
+// TODO: move this into the pkg/acme package
+func DNS01LookupFQDN(domain string, followCNAME bool, nameservers ...string) (string, error) {
+	fqdn := fmt.Sprintf("_acme-challenge.%s.", domain)
+
+	// Check if the domain has CNAME then return that
+	if followCNAME {
+		var err error
+		fqdn, err = followCNAMEs(fqdn, nameservers)
+		if err != nil {
+			return "", err
+		}
+	}
+
+	return fqdn, nil
+}
+
+// FindBestMatch returns the longest match for a given domain within a list of domains
+func FindBestMatch(query string, domains ...string) (string, error) {
+	var maxSoFar int
+	var longest string
+
+	for _, domain := range domains {
+		if query == domain {
+			// Found exact match
+			return domain, nil
+		}
+
+		maxHere := dns.CompareDomainName(query, domain)
+		if maxHere > maxSoFar && dns.IsSubDomain(domain, query) {
+			maxSoFar = maxHere
+			longest = domain
+		}
+	}
+
+	if len(longest) == 0 {
+		return "", fmt.Errorf("query: %v has no matches", query)
+	}
+	return longest, nil
+}