mirror of
https://github.com/v2fly/v2ray-core.git
synced 2024-11-17 18:06:15 -05:00
81 lines
1.9 KiB
Go
81 lines
1.9 KiB
Go
package dns
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import (
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"v2ray.com/core/common"
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"v2ray.com/core/common/net"
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"v2ray.com/core/common/strmatcher"
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"v2ray.com/core/features"
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)
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type StaticHosts struct {
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ips map[uint32][]net.IP
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matchers *strmatcher.MatcherGroup
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}
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var typeMap = map[DomainMatchingType]strmatcher.Type{
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DomainMatchingType_Full: strmatcher.Full,
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DomainMatchingType_Subdomain: strmatcher.Domain,
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DomainMatchingType_Keyword: strmatcher.Substr,
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DomainMatchingType_Regex: strmatcher.Regex,
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}
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func toStrMatcher(t DomainMatchingType, domain string) (strmatcher.Matcher, error) {
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strMType, f := typeMap[t]
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if !f {
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return nil, newError("unknown mapping type", t).AtWarning()
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}
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matcher, err := strMType.New(domain)
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if err != nil {
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return nil, newError("failed to create str matcher").Base(err)
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}
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return matcher, nil
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}
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func NewStaticHosts(hosts []*Config_HostMapping, legacy map[string]*net.IPOrDomain) (*StaticHosts, error) {
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g := new(strmatcher.MatcherGroup)
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sh := &StaticHosts{
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ips: make(map[uint32][]net.IP),
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matchers: g,
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}
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if legacy != nil {
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features.PrintDeprecatedFeatureWarning("simple host mapping")
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for domain, ip := range legacy {
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matcher, err := strmatcher.Full.New(domain)
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common.Must(err)
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id := g.Add(matcher)
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address := ip.AsAddress()
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if address.Family().IsDomain() {
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return nil, newError("ignoring domain address in static hosts: ", address.Domain()).AtWarning()
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}
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sh.ips[id] = []net.IP{address.IP()}
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}
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}
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for _, mapping := range hosts {
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matcher, err := toStrMatcher(mapping.Type, mapping.Domain)
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if err != nil {
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return nil, newError("failed to create domain matcher").Base(err)
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}
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id := g.Add(matcher)
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ips := make([]net.IP, len(mapping.Ip))
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for idx, ip := range mapping.Ip {
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ips[idx] = net.IP(ip)
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}
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sh.ips[id] = ips
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}
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return sh, nil
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}
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func (h *StaticHosts) LookupIP(domain string) []net.IP {
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id := h.matchers.Match(domain)
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if id == 0 {
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return nil
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}
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return h.ips[id]
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}
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