additional LDAP support

irc/ldap/helpers.go

@@ -0,0 +1,51 @@
+// Copyright Grafana Labs and contributors
+// and released under the Apache 2.0 license
+
+package ldap
+
+import (
+	"strings"
+
+	ldap "github.com/go-ldap/ldap/v3"
+)
+
+func isMemberOf(memberOf []string, group string) bool {
+	if group == "*" {
+		return true
+	}
+
+	for _, member := range memberOf {
+		if strings.EqualFold(member, group) {
+			return true
+		}
+	}
+	return false
+}
+
+func getArrayAttribute(name string, entry *ldap.Entry) []string {
+	if strings.ToLower(name) == "dn" {
+		return []string{entry.DN}
+	}
+
+	for _, attr := range entry.Attributes {
+		if attr.Name == name && len(attr.Values) > 0 {
+			return attr.Values
+		}
+	}
+	return []string{}
+}
+
+func getAttribute(name string, entry *ldap.Entry) string {
+	if strings.ToLower(name) == "dn" {
+		return entry.DN
+	}
+
+	for _, attr := range entry.Attributes {
+		if attr.Name == name {
+			if len(attr.Values) > 0 {
+				return attr.Values[0]
+			}
+		}
+	}
+	return ""
+}