Refactor struct & Add override dialer options

route/rule_domain.go

@@ -0,0 +1,64 @@
+package route
+
+import (
+	"strings"
+
+	"github.com/sagernet/sing-box/adapter"
+	"github.com/sagernet/sing-box/common/domain"
+	"github.com/sagernet/sing/common"
+)
+
+var _ RuleItem = (*DomainItem)(nil)
+
+type DomainItem struct {
+	description string
+	matcher     *domain.Matcher
+}
+
+func NewDomainItem(domains []string, domainSuffixes []string) *DomainItem {
+	domains = common.Uniq(domains)
+	domainSuffixes = common.Uniq(domainSuffixes)
+	var description string
+	if dLen := len(domains); dLen > 0 {
+		if dLen == 1 {
+			description = "domain=" + domains[0]
+		} else if dLen > 3 {
+			description = "domain=[" + strings.Join(domains[:3], " ") + "...]"
+		} else {
+			description = "domain=[" + strings.Join(domains, " ") + "]"
+		}
+	}
+	if dsLen := len(domainSuffixes); dsLen > 0 {
+		if len(description) > 0 {
+			description += " "
+		}
+		if dsLen == 1 {
+			description += "domainSuffix=" + domainSuffixes[0]
+		} else if dsLen > 3 {
+			description += "domainSuffix=[" + strings.Join(domainSuffixes[:3], " ") + "...]"
+		} else {
+			description += "domainSuffix=[" + strings.Join(domainSuffixes, " ") + "]"
+		}
+	}
+	return &DomainItem{
+		description,
+		domain.NewMatcher(domains, domainSuffixes),
+	}
+}
+
+func (r *DomainItem) Match(metadata *adapter.InboundContext) bool {
+	var domainHost string
+	if metadata.Domain != "" {
+		domainHost = metadata.Domain
+	} else {
+		domainHost = metadata.Destination.Fqdn
+	}
+	if domainHost == "" {
+		return false
+	}
+	return r.matcher.Match(domainHost)
+}
+
+func (r *DomainItem) String() string {
+	return r.description
+}