mirror of
https://gitclone.com/github.com/MetaCubeX/Clash.Meta
synced 2025-05-13 13:38:06 +08:00
106 lines
2.3 KiB
Go
106 lines
2.3 KiB
Go
package outbound
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import (
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"bytes"
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"context"
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"fmt"
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"net"
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"net/netip"
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"regexp"
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"strconv"
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"github.com/metacubex/mihomo/component/resolver"
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C "github.com/metacubex/mihomo/constant"
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"github.com/metacubex/mihomo/transport/socks5"
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)
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func serializesSocksAddr(metadata *C.Metadata) []byte {
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var buf [][]byte
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addrType := metadata.AddrType()
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p := uint(metadata.DstPort)
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port := []byte{uint8(p >> 8), uint8(p & 0xff)}
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switch addrType {
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case C.AtypDomainName:
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lenM := uint8(len(metadata.Host))
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host := []byte(metadata.Host)
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buf = [][]byte{{socks5.AtypDomainName, lenM}, host, port}
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case C.AtypIPv4:
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host := metadata.DstIP.AsSlice()
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buf = [][]byte{{socks5.AtypIPv4}, host, port}
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case C.AtypIPv6:
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host := metadata.DstIP.AsSlice()
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buf = [][]byte{{socks5.AtypIPv6}, host, port}
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}
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return bytes.Join(buf, nil)
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}
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func resolveUDPAddr(ctx context.Context, network, address string, prefer C.DNSPrefer) (*net.UDPAddr, error) {
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host, port, err := net.SplitHostPort(address)
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if err != nil {
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return nil, err
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}
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var ip netip.Addr
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switch prefer {
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case C.IPv4Only:
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ip, err = resolver.ResolveIPv4WithResolver(ctx, host, resolver.ProxyServerHostResolver)
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case C.IPv6Only:
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ip, err = resolver.ResolveIPv6WithResolver(ctx, host, resolver.ProxyServerHostResolver)
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case C.IPv6Prefer:
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ip, err = resolver.ResolveIPPrefer6WithResolver(ctx, host, resolver.ProxyServerHostResolver)
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default:
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ip, err = resolver.ResolveIPWithResolver(ctx, host, resolver.ProxyServerHostResolver)
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}
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if err != nil {
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return nil, err
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}
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ip, port = resolver.LookupIP4P(ip, port)
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return net.ResolveUDPAddr(network, net.JoinHostPort(ip.String(), port))
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}
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func safeConnClose(c net.Conn, err error) {
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if err != nil && c != nil {
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_ = c.Close()
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}
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}
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var rateStringRegexp = regexp.MustCompile(`^(\d+)\s*([KMGT]?)([Bb])ps$`)
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func StringToBps(s string) uint64 {
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if s == "" {
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return 0
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}
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// when have not unit, use Mbps
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if v, err := strconv.Atoi(s); err == nil {
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return StringToBps(fmt.Sprintf("%d Mbps", v))
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}
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m := rateStringRegexp.FindStringSubmatch(s)
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if m == nil {
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return 0
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}
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var n uint64 = 1
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switch m[2] {
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case "T":
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n *= 1000
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fallthrough
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case "G":
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n *= 1000
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fallthrough
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case "M":
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n *= 1000
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fallthrough
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case "K":
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n *= 1000
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}
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v, _ := strconv.ParseUint(m[1], 10, 64)
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n *= v
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if m[3] == "b" {
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// Bits, need to convert to bytes
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n /= 8
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}
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return n
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}
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