mirror of
https://github.com/v2fly/v2ray-core.git
synced 2024-12-21 09:36:34 -05:00
Refactor vmess internal struct for better readability
This commit is contained in:
V2Ray
parent
8a6b07ba61
commit
791ac780f0
@ -11,7 +11,6 @@ import (
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"io"
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_ "log"
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mrand "math/rand"
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"net"
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"github.com/v2ray/v2ray-core"
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v2io "github.com/v2ray/v2ray-core/io"
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@ -33,127 +32,15 @@ var (
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// VMessRequest implements the request message of VMess protocol. It only contains
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// the header of a request message. The data part will be handled by conection
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// handler directly, in favor of data streaming.
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// 1 Version
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// 16 UserHash
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// 16 Request IV
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// 16 Request Key
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// 4 Response Header
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// 1 Command
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// 2 Port
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// 1 Address Type
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// 256 Target Address
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type VMessRequest [312]byte
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func (r *VMessRequest) Version() byte {
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return r[0]
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}
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func (r *VMessRequest) SetVersion(version byte) *VMessRequest {
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r[0] = version
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return r
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}
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func (r *VMessRequest) UserHash() []byte {
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return r[1:17]
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}
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func (r *VMessRequest) RequestIV() []byte {
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return r[17:33]
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}
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func (r *VMessRequest) RequestKey() []byte {
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return r[33:49]
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}
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func (r *VMessRequest) ResponseHeader() []byte {
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return r[49:53]
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}
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func (r *VMessRequest) Command() byte {
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return r[53]
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}
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func (r *VMessRequest) SetCommand(command byte) *VMessRequest {
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r[53] = command
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return r
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}
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func (r *VMessRequest) Port() uint16 {
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return binary.BigEndian.Uint16(r.portBytes())
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}
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func (r *VMessRequest) portBytes() []byte {
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return r[54:56]
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}
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func (r *VMessRequest) SetPort(port uint16) *VMessRequest {
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binary.BigEndian.PutUint16(r.portBytes(), port)
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return r
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}
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func (r *VMessRequest) targetAddressType() byte {
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return r[56]
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}
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func (r *VMessRequest) Destination() v2net.VAddress {
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switch r.targetAddressType() {
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case addrTypeIPv4:
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fallthrough
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case addrTypeIPv6:
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return v2net.IPAddress(r.targetAddressBytes(), r.Port())
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case addrTypeDomain:
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return v2net.DomainAddress(r.TargetAddress(), r.Port())
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default:
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panic("Unpexected address type")
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}
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}
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func (r *VMessRequest) TargetAddress() string {
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switch r.targetAddressType() {
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case addrTypeIPv4:
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return net.IP(r[57:61]).String()
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case addrTypeIPv6:
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return net.IP(r[57:73]).String()
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case addrTypeDomain:
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domainLength := int(r[57])
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return string(r[58 : 58+domainLength])
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default:
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panic("Unexpected address type")
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}
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}
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func (r *VMessRequest) targetAddressBytes() []byte {
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switch r.targetAddressType() {
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case addrTypeIPv4:
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return r[57:61]
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case addrTypeIPv6:
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return r[57:73]
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case addrTypeDomain:
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domainLength := int(r[57])
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return r[57 : 58+domainLength]
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default:
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panic("Unexpected address type")
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}
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}
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func (r *VMessRequest) SetIPv4(ipv4 []byte) *VMessRequest {
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r[56] = addrTypeIPv4
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copy(r[57:], ipv4)
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return r
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}
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func (r *VMessRequest) SetIPv6(ipv6 []byte) *VMessRequest {
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r[56] = addrTypeIPv6
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copy(r[57:], ipv6)
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return r
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}
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func (r *VMessRequest) SetDomain(domain string) *VMessRequest {
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r[56] = addrTypeDomain
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r[57] = byte(len(domain))
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copy(r[58:], []byte(domain))
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return r
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type VMessRequest struct {
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Version byte
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UserId core.VID
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RequestIV [16]byte
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RequestKey [16]byte
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ResponseHeader [4]byte
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Command byte
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Address v2net.VAddress
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}
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type VMessRequestReader struct {
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@ -169,26 +56,30 @@ func NewVMessRequestReader(vUserSet *core.VUserSet) *VMessRequestReader {
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func (r *VMessRequestReader) Read(reader io.Reader) (*VMessRequest, error) {
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request := new(VMessRequest)
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nBytes, err := reader.Read(request[0:17] /* version + user hash */)
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buffer := make([]byte, 256)
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nBytes, err := reader.Read(buffer[0:1])
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if err != nil {
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return nil, err
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}
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if nBytes != 17 {
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err = fmt.Errorf("Unexpected length of header %d", nBytes)
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// TODO: verify version number
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request.Version = buffer[0]
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nBytes, err = reader.Read(buffer[:len(request.UserId)])
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if err != nil {
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return nil, err
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}
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// TODO: verify version number
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userId, valid := r.vUserSet.IsValidUserId(request.UserHash())
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userId, valid := r.vUserSet.IsValidUserId(buffer[:nBytes])
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if !valid {
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return nil, ErrorInvalidUser
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}
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request.UserId = *userId
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decryptor, err := NewDecryptionReader(reader, userId.Hash([]byte("PWD")), make([]byte, blockSize))
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if err != nil {
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return nil, err
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}
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buffer := make([]byte, 300)
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nBytes, err = decryptor.Read(buffer[0:1])
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if err != nil {
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return nil, err
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@ -204,15 +95,15 @@ func (r *VMessRequestReader) Read(reader io.Reader) (*VMessRequest, error) {
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}
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// TODO: check number of bytes returned
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_, err = decryptor.Read(request.RequestIV())
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_, err = decryptor.Read(request.RequestIV[:])
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if err != nil {
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return nil, err
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}
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_, err = decryptor.Read(request.RequestKey())
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_, err = decryptor.Read(request.RequestKey[:])
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if err != nil {
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return nil, err
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}
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_, err = decryptor.Read(request.ResponseHeader())
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_, err = decryptor.Read(request.ResponseHeader[:])
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if err != nil {
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return nil, err
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}
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@ -220,13 +111,13 @@ func (r *VMessRequestReader) Read(reader io.Reader) (*VMessRequest, error) {
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if err != nil {
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return nil, err
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}
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request.SetCommand(buffer[0])
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request.Command = buffer[0]
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_, err = decryptor.Read(buffer[0:2])
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if err != nil {
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return nil, err
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}
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request.SetPort(binary.BigEndian.Uint16(buffer[0:2]))
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port := binary.BigEndian.Uint16(buffer[0:2])
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_, err = decryptor.Read(buffer[0:1])
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if err != nil {
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@ -238,13 +129,13 @@ func (r *VMessRequestReader) Read(reader io.Reader) (*VMessRequest, error) {
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if err != nil {
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return nil, err
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}
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request.SetIPv4(buffer[1:5])
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request.Address = v2net.IPAddress(buffer[1:5], port)
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case addrTypeIPv6:
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_, err = decryptor.Read(buffer[1:17])
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if err != nil {
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return nil, err
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}
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request.SetIPv6(buffer[1:17])
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request.Address = v2net.IPAddress(buffer[1:17], port)
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case addrTypeDomain:
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_, err = decryptor.Read(buffer[1:2])
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if err != nil {
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@ -255,7 +146,7 @@ func (r *VMessRequestReader) Read(reader io.Reader) (*VMessRequest, error) {
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if err != nil {
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return nil, err
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}
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request.SetDomain(string(buffer[2 : 2+domainLength]))
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request.Address = v2net.DomainAddress(string(buffer[2:2+domainLength]), port)
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}
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_, err = decryptor.Read(buffer[0:1])
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if err != nil {
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@ -271,19 +162,17 @@ func (r *VMessRequestReader) Read(reader io.Reader) (*VMessRequest, error) {
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}
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type VMessRequestWriter struct {
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vUserSet *core.VUserSet
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}
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func NewVMessRequestWriter(vUserSet *core.VUserSet) *VMessRequestWriter {
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func NewVMessRequestWriter() *VMessRequestWriter {
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writer := new(VMessRequestWriter)
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writer.vUserSet = vUserSet
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return writer
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}
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func (w *VMessRequestWriter) Write(writer io.Writer, request *VMessRequest) error {
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buffer := make([]byte, 0, 300)
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buffer = append(buffer, request.Version())
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buffer = append(buffer, request.UserHash()...)
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buffer = append(buffer, request.Version)
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buffer = append(buffer, request.UserId.Hash([]byte("ASK"))...)
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encryptionBegin := len(buffer)
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@ -296,13 +185,27 @@ func (w *VMessRequestWriter) Write(writer io.Writer, request *VMessRequest) erro
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buffer = append(buffer, byte(randomLength))
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buffer = append(buffer, randomContent...)
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buffer = append(buffer, request.RequestIV()...)
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buffer = append(buffer, request.RequestKey()...)
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buffer = append(buffer, request.ResponseHeader()...)
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buffer = append(buffer, request.Command())
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buffer = append(buffer, request.portBytes()...)
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buffer = append(buffer, request.targetAddressType())
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buffer = append(buffer, request.targetAddressBytes()...)
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buffer = append(buffer, request.RequestIV[:]...)
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buffer = append(buffer, request.RequestKey[:]...)
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buffer = append(buffer, request.ResponseHeader[:]...)
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buffer = append(buffer, request.Command)
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portBytes := make([]byte, 2)
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binary.BigEndian.PutUint16(portBytes, request.Address.Port)
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buffer = append(buffer, portBytes...)
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switch {
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case request.Address.IsIPv4():
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buffer = append(buffer, addrTypeIPv4)
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buffer = append(buffer, request.Address.IP...)
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case request.Address.IsIPv6():
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buffer = append(buffer, addrTypeIPv6)
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buffer = append(buffer, request.Address.IP...)
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case request.Address.IsDomain():
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buffer = append(buffer, addrTypeDomain)
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buffer = append(buffer, byte(len(request.Address.Domain)))
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buffer = append(buffer, []byte(request.Address.Domain)...)
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}
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paddingLength := blockSize - 1 - (len(buffer)-encryptionBegin)%blockSize
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if paddingLength == 0 {
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@ -317,11 +220,7 @@ func (w *VMessRequestWriter) Write(writer io.Writer, request *VMessRequest) erro
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buffer = append(buffer, paddingBuffer...)
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encryptionEnd := len(buffer)
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userId, valid := w.vUserSet.IsValidUserId(request.UserHash())
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if !valid {
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return ErrorInvalidUser
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}
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aesCipher, err := aes.NewCipher(userId.Hash([]byte("PWD")))
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aesCipher, err := aes.NewCipher(request.UserId.Hash([]byte("PWD")))
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if err != nil {
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return err
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}
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@ -344,6 +243,6 @@ type VMessResponse [4]byte
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func NewVMessResponse(request *VMessRequest) *VMessResponse {
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response := new(VMessResponse)
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copy(response[:], request.ResponseHeader())
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copy(response[:], request.ResponseHeader[:])
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return response
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}
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@ -6,9 +6,13 @@ import (
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"testing"
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"github.com/v2ray/v2ray-core"
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v2net "github.com/v2ray/v2ray-core/net"
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"github.com/v2ray/v2ray-core/testing/unit"
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)
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func TestVMessSerialization(t *testing.T) {
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assert := unit.Assert(t)
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userId, err := core.UUIDToVID("2b2966ac-16aa-4fbf-8d81-c5f172a3da51")
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if err != nil {
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t.Fatal(err)
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@ -18,31 +22,29 @@ func TestVMessSerialization(t *testing.T) {
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userSet.AddUser(core.VUser{userId})
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request := new(VMessRequest)
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request.SetVersion(byte(0x01))
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userHash := userId.Hash([]byte("ASK"))
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copy(request.UserHash(), userHash)
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request.Version = byte(0x01)
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request.UserId = userId
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_, err = rand.Read(request.RequestIV())
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_, err = rand.Read(request.RequestIV[:])
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if err != nil {
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t.Fatal(err)
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}
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_, err = rand.Read(request.RequestKey())
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_, err = rand.Read(request.RequestKey[:])
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if err != nil {
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t.Fatal(err)
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}
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_, err = rand.Read(request.ResponseHeader())
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_, err = rand.Read(request.ResponseHeader[:])
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if err != nil {
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t.Fatal(err)
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}
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request.SetCommand(byte(0x01))
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request.SetPort(80)
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request.SetDomain("v2ray.com")
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request.Command = byte(0x01)
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request.Address = v2net.DomainAddress("v2ray.com", 80)
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buffer := bytes.NewBuffer(make([]byte, 0, 300))
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requestWriter := NewVMessRequestWriter(userSet)
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requestWriter := NewVMessRequestWriter()
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err = requestWriter.Write(buffer, request)
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if err != nil {
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t.Fatal(err)
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@ -54,35 +56,11 @@ func TestVMessSerialization(t *testing.T) {
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t.Fatal(err)
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}
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if actualRequest.Version() != byte(0x01) {
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t.Errorf("Expected Version 1, but got %d", actualRequest.Version())
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}
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if !bytes.Equal(request.UserHash(), actualRequest.UserHash()) {
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t.Errorf("Expected user hash %v, but got %v", request.UserHash(), actualRequest.UserHash())
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}
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if !bytes.Equal(request.RequestIV(), actualRequest.RequestIV()) {
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t.Errorf("Expected request IV %v, but got %v", request.RequestIV(), actualRequest.RequestIV())
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}
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if !bytes.Equal(request.RequestKey(), actualRequest.RequestKey()) {
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t.Errorf("Expected request Key %v, but got %v", request.RequestKey(), actualRequest.RequestKey())
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}
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if !bytes.Equal(request.ResponseHeader(), actualRequest.ResponseHeader()) {
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t.Errorf("Expected response header %v, but got %v", request.ResponseHeader(), actualRequest.ResponseHeader())
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}
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if actualRequest.Command() != byte(0x01) {
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t.Errorf("Expected command 1, but got %d", actualRequest.Command())
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}
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if actualRequest.Port() != 80 {
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t.Errorf("Expected port 80, but got %d", actualRequest.Port())
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}
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if actualRequest.TargetAddress() != "v2ray.com" {
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t.Errorf("Expected target address v2ray.com, but got %s", actualRequest.TargetAddress())
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}
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assert.Byte(actualRequest.Version).Named("Version").Equals(byte(0x01))
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assert.Bytes(actualRequest.UserId[:]).Named("UserId").Equals(request.UserId[:])
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assert.Bytes(actualRequest.RequestIV[:]).Named("RequestIV").Equals(request.RequestIV[:])
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assert.Bytes(actualRequest.RequestKey[:]).Named("RequestKey").Equals(request.RequestKey[:])
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assert.Bytes(actualRequest.ResponseHeader[:]).Named("ResponseHeader").Equals(request.ResponseHeader[:])
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assert.Byte(actualRequest.Command).Named("Command").Equals(request.Command)
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assert.String(actualRequest.Address.String()).Named("Address").Equals(request.Address.String())
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}
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45
log/log.go
Normal file
45
log/log.go
Normal file
@ -0,0 +1,45 @@
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package log
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import (
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"errors"
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"fmt"
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"log"
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)
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const (
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DebugLevel = LogLevel(0)
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InfoLevel = LogLevel(1)
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WarningLevel = LogLevel(2)
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ErrorLevel = LogLevel(3)
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)
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var logLevel = WarningLevel
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type LogLevel int
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func SetLogLevel(level LogLevel) {
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logLevel = level
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}
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func writeLog(data string, level LogLevel) {
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if level < logLevel {
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return
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}
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log.Print(data)
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}
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func Info(format string, v ...interface{}) {
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data := fmt.Sprintf(format, v)
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writeLog("[Info]"+data, InfoLevel)
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}
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func Warning(format string, v ...interface{}) {
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data := fmt.Sprintf(format, v)
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writeLog("[Warning]"+data, WarningLevel)
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}
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func Error(format string, v ...interface{}) error {
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data := fmt.Sprintf(format, v)
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writeLog("[Error]"+data, ErrorLevel)
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return errors.New(data)
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}
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@ -12,12 +12,14 @@ import (
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type VMessInboundHandler struct {
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vPoint *core.VPoint
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clients *core.VUserSet
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accepting bool
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}
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func NewVMessInboundHandler(vp *core.VPoint) *VMessInboundHandler {
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func NewVMessInboundHandler(vp *core.VPoint, clients *core.VUserSet) *VMessInboundHandler {
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handler := new(VMessInboundHandler)
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handler.vPoint = vp
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||||
handler.clients = clients
|
||||
return handler
|
||||
}
|
||||
|
||||
@ -45,7 +47,7 @@ func (handler *VMessInboundHandler) AcceptConnections(listener net.Listener) err
|
||||
|
||||
func (handler *VMessInboundHandler) HandleConnection(connection net.Conn) error {
|
||||
defer connection.Close()
|
||||
reader := vmessio.NewVMessRequestReader(handler.vPoint.UserSet)
|
||||
reader := vmessio.NewVMessRequestReader(handler.clients)
|
||||
|
||||
request, err := reader.Read(connection)
|
||||
if err != nil {
|
||||
@ -55,8 +57,8 @@ func (handler *VMessInboundHandler) HandleConnection(connection net.Conn) error
|
||||
response := vmessio.NewVMessResponse(request)
|
||||
connection.Write(response[:])
|
||||
|
||||
requestKey := request.RequestKey()
|
||||
requestIV := request.RequestIV()
|
||||
requestKey := request.RequestKey[:]
|
||||
requestIV := request.RequestIV[:]
|
||||
responseKey := md5.Sum(requestKey)
|
||||
responseIV := md5.Sum(requestIV)
|
||||
|
||||
@ -70,7 +72,7 @@ func (handler *VMessInboundHandler) HandleConnection(connection net.Conn) error
|
||||
return err
|
||||
}
|
||||
|
||||
ray := handler.vPoint.NewInboundConnectionAccepted(request.Destination())
|
||||
ray := handler.vPoint.NewInboundConnectionAccepted(request.Address)
|
||||
input := ray.InboundInput()
|
||||
output := ray.InboundOutput()
|
||||
finish := make(chan bool, 2)
|
||||
@ -112,8 +114,18 @@ func (handler *VMessInboundHandler) waitForFinish(finish <-chan bool) {
|
||||
}
|
||||
|
||||
type VMessInboundHandlerFactory struct {
|
||||
allowedClients *core.VUserSet
|
||||
}
|
||||
|
||||
func NewVMessInboundHandlerFactory(clients []core.VUser) *VMessInboundHandlerFactory {
|
||||
factory := new(VMessInboundHandlerFactory)
|
||||
factory.allowedClients = core.NewVUserSet()
|
||||
for _, user := range clients {
|
||||
factory.allowedClients.AddUser(user)
|
||||
}
|
||||
return factory
|
||||
}
|
||||
|
||||
func (factory *VMessInboundHandlerFactory) Create(vp *core.VPoint) *VMessInboundHandler {
|
||||
return NewVMessInboundHandler(vp)
|
||||
return NewVMessInboundHandler(vp, factory.allowedClients)
|
||||
}
|
||||
|
||||
@ -45,23 +45,13 @@ func (handler *VMessOutboundHandler) Start(ray core.OutboundVRay) error {
|
||||
vNextAddress, vNextUser := handler.pickVNext()
|
||||
|
||||
request := new(vmessio.VMessRequest)
|
||||
request.SetVersion(vmessio.Version)
|
||||
copy(request.UserHash(), vNextUser.Id.Hash([]byte("ASK")))
|
||||
rand.Read(request.RequestIV())
|
||||
rand.Read(request.RequestKey())
|
||||
rand.Read(request.ResponseHeader())
|
||||
request.SetCommand(byte(0x01))
|
||||
request.SetPort(handler.dest.Port)
|
||||
|
||||
address := handler.dest
|
||||
switch {
|
||||
case address.IsIPv4():
|
||||
request.SetIPv4(address.IP)
|
||||
case address.IsIPv6():
|
||||
request.SetIPv6(address.IP)
|
||||
case address.IsDomain():
|
||||
request.SetDomain(address.Domain)
|
||||
}
|
||||
request.Version = vmessio.Version
|
||||
request.UserId = vNextUser.Id
|
||||
rand.Read(request.RequestIV[:])
|
||||
rand.Read(request.RequestKey[:])
|
||||
rand.Read(request.ResponseHeader[:])
|
||||
request.Command = byte(0x01)
|
||||
request.Address = handler.dest
|
||||
|
||||
conn, err := net.Dial("tcp", vNextAddress.String())
|
||||
if err != nil {
|
||||
@ -69,11 +59,11 @@ func (handler *VMessOutboundHandler) Start(ray core.OutboundVRay) error {
|
||||
}
|
||||
defer conn.Close()
|
||||
|
||||
requestWriter := vmessio.NewVMessRequestWriter(handler.vPoint.UserSet)
|
||||
requestWriter := vmessio.NewVMessRequestWriter()
|
||||
requestWriter.Write(conn, request)
|
||||
|
||||
requestKey := request.RequestKey()
|
||||
requestIV := request.RequestIV()
|
||||
requestKey := request.RequestKey[:]
|
||||
requestIV := request.RequestIV[:]
|
||||
responseKey := md5.Sum(requestKey)
|
||||
responseIV := md5.Sum(requestIV)
|
||||
|
||||
|
||||
5
vid.go
5
vid.go
@ -3,7 +3,8 @@ package core
|
||||
import (
|
||||
"crypto/md5"
|
||||
"encoding/hex"
|
||||
"fmt"
|
||||
|
||||
"github.com/v2ray/v2ray-core/log"
|
||||
)
|
||||
|
||||
// The ID of en entity, in the form of an UUID.
|
||||
@ -23,7 +24,7 @@ var byteGroups = []int{8, 4, 4, 4, 12}
|
||||
func UUIDToVID(uuid string) (v VID, err error) {
|
||||
text := []byte(uuid)
|
||||
if len(text) < 32 {
|
||||
err = fmt.Errorf("uuid: invalid UUID string: %s", text)
|
||||
err = log.Error("uuid: invalid UUID string: %s", text)
|
||||
return
|
||||
}
|
||||
|
||||
|
||||
@ -9,7 +9,6 @@ import (
|
||||
// VPoint is an single server in V2Ray system.
|
||||
type VPoint struct {
|
||||
Config VConfig
|
||||
UserSet *VUserSet
|
||||
ichFactory InboundConnectionHandlerFactory
|
||||
ochFactory OutboundConnectionHandlerFactory
|
||||
}
|
||||
@ -19,12 +18,6 @@ type VPoint struct {
|
||||
func NewVPoint(config *VConfig, ichFactory InboundConnectionHandlerFactory, ochFactory OutboundConnectionHandlerFactory) (*VPoint, error) {
|
||||
var vpoint = new(VPoint)
|
||||
vpoint.Config = *config
|
||||
vpoint.UserSet = NewVUserSet()
|
||||
|
||||
for _, user := range vpoint.Config.AllowedClients {
|
||||
vpoint.UserSet.AddUser(user)
|
||||
}
|
||||
|
||||
vpoint.ichFactory = ichFactory
|
||||
vpoint.ochFactory = ochFactory
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user