sing-box/route/rule_item_domain.go

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package route
import (
"strings"
"github.com/sagernet/sing-box/adapter"
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"github.com/sagernet/sing/common/domain"
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)
var _ RuleItem = (*DomainItem)(nil)
type DomainItem struct {
matcher *domain.Matcher
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description string
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}
func NewDomainItem(domains []string, domainSuffixes []string) *DomainItem {
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 += "domain_suffix=" + domainSuffixes[0]
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} else if dsLen > 3 {
description += "domain_suffix=[" + strings.Join(domainSuffixes[:3], " ") + "...]"
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} else {
description += "domain_suffix=[" + strings.Join(domainSuffixes, " ") + "]"
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}
}
return &DomainItem{
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domain.NewMatcher(domains, domainSuffixes, false),
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description,
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}
}
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func NewRawDomainItem(matcher *domain.Matcher) *DomainItem {
return &DomainItem{
matcher,
"domain/domain_suffix=<binary>",
}
}
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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
}
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return r.matcher.Match(strings.ToLower(domainHost))
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}
func (r *DomainItem) String() string {
return r.description
}