init: 自 zomaintain/backend/rdplib 平移独立成库; module path 从上游 github.com/nakagami/grdp 改为 git.zeroonesoft.cn/golib/rdplib
This commit is contained in:
@@ -0,0 +1,189 @@
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package ber
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import (
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"errors"
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"fmt"
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"io"
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"git.zeroonesoft.cn/golib/rdplib/core"
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)
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const (
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CLASS_MASK uint8 = 0xC0
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CLASS_UNIV = 0x00
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CLASS_APPL = 0x40
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CLASS_CTXT = 0x80
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CLASS_PRIV = 0xC0
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)
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const (
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PC_MASK uint8 = 0x20
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PC_PRIMITIVE = 0x00
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PC_CONSTRUCT = 0x20
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)
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const (
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TAG_MASK uint8 = 0x1F
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TAG_BOOLEAN = 0x01
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TAG_INTEGER = 0x02
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TAG_BIT_STRING = 0x03
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TAG_OCTET_STRING = 0x04
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TAG_OBJECT_IDENFIER = 0x06
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TAG_ENUMERATED = 0x0A
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TAG_SEQUENCE = 0x10
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TAG_SEQUENCE_OF = 0x10
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)
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func berPC(pc bool) uint8 {
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if pc {
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return PC_CONSTRUCT
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}
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return PC_PRIMITIVE
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}
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func ReadEnumerated(r io.Reader) (uint8, error) {
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if !ReadUniversalTag(TAG_ENUMERATED, false, r) {
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return 0, errors.New("invalid ber tag")
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}
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length, err := ReadLength(r)
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if err != nil {
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return 0, err
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}
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if length != 1 {
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return 0, errors.New(fmt.Sprintf("enumerate size is wrong, get %v, expect 1", length))
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}
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return core.ReadUInt8(r)
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}
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func ReadUniversalTag(tag uint8, pc bool, r io.Reader) bool {
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bb, _ := core.ReadUInt8(r)
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return bb == (CLASS_UNIV|berPC(pc))|(TAG_MASK&tag)
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}
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func WriteUniversalTag(tag uint8, pc bool, w io.Writer) {
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core.WriteUInt8((CLASS_UNIV|berPC(pc))|(TAG_MASK&tag), w)
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}
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func ReadLength(r io.Reader) (int, error) {
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ret := 0
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size, _ := core.ReadUInt8(r)
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if size&0x80 > 0 {
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size = size &^ 0x80
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if size == 1 {
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r, err := core.ReadUInt8(r)
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if err != nil {
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return 0, err
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}
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ret = int(r)
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} else if size == 2 {
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r, err := core.ReadUint16BE(r)
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if err != nil {
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return 0, err
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}
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ret = int(r)
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} else {
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return 0, errors.New("BER length may be 1 or 2")
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}
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} else {
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ret = int(size)
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}
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return ret, nil
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}
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func WriteLength(size int, w io.Writer) {
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if size > 0x7f {
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core.WriteUInt8(0x82, w)
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core.WriteUInt16BE(uint16(size), w)
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} else {
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core.WriteUInt8(uint8(size), w)
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}
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}
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func ReadInteger(r io.Reader) (int, error) {
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if !ReadUniversalTag(TAG_INTEGER, false, r) {
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return 0, errors.New("Bad integer tag")
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}
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size, _ := ReadLength(r)
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switch size {
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case 1:
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num, _ := core.ReadUInt8(r)
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return int(num), nil
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case 2:
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num, _ := core.ReadUint16BE(r)
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return int(num), nil
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case 3:
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integer1, _ := core.ReadUInt8(r)
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integer2, _ := core.ReadUint16BE(r)
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return int(integer2) + int(uint32(integer1)<<16), nil
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case 4:
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num, _ := core.ReadUInt32BE(r)
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return int(num), nil
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default:
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return 0, errors.New("wrong size")
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}
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}
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func WriteInteger(n int, w io.Writer) {
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WriteUniversalTag(TAG_INTEGER, false, w)
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if n <= 0xff {
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WriteLength(1, w)
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core.WriteUInt8(uint8(n), w)
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} else if n <= 0xffff {
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WriteLength(2, w)
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core.WriteUInt16BE(uint16(n), w)
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} else {
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WriteLength(4, w)
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core.WriteUInt32BE(uint32(n), w)
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}
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}
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func WriteOctetstring(str string, w io.Writer) {
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WriteUniversalTag(TAG_OCTET_STRING, false, w)
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WriteLength(len(str), w)
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core.WriteBytes([]byte(str), w)
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}
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func WriteBoolean(b bool, w io.Writer) {
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bb := uint8(0)
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if b {
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bb = uint8(0xff)
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}
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WriteUniversalTag(TAG_BOOLEAN, false, w)
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WriteLength(1, w)
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core.WriteUInt8(bb, w)
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}
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func ReadApplicationTag(tag uint8, r io.Reader) (int, error) {
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bb, _ := core.ReadUInt8(r)
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if tag > 30 {
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if bb != (CLASS_APPL|PC_CONSTRUCT)|TAG_MASK {
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return 0, errors.New(fmt.Sprintf("ReadApplicationTag error tag=0x%x,bb=0x%x", tag, bb))
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}
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bb, _ := core.ReadUInt8(r)
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if bb != tag {
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return 0, errors.New("ReadApplicationTag bad tag")
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}
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} else {
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if bb != (CLASS_APPL|PC_CONSTRUCT)|(TAG_MASK&tag) {
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return 0, errors.New(fmt.Sprintf("ReadApplicationTag error valiable length tag=0x%x,bb=0x%x", tag, bb))
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}
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}
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return ReadLength(r)
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}
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func WriteApplicationTag(tag uint8, size int, w io.Writer) {
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if tag > 30 {
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core.WriteUInt8((CLASS_APPL|PC_CONSTRUCT)|TAG_MASK, w)
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core.WriteUInt8(tag, w)
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WriteLength(size, w)
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} else {
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core.WriteUInt8((CLASS_APPL|PC_CONSTRUCT)|(TAG_MASK&tag), w)
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WriteLength(size, w)
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}
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}
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func WriteEncodedDomainParams(data []byte, w io.Writer) {
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WriteUniversalTag(TAG_SEQUENCE, true, w)
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WriteLength(len(data), w)
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core.WriteBytes(data, w)
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}
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@@ -0,0 +1,671 @@
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package gcc
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import (
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"bytes"
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"crypto/rsa"
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"crypto/x509"
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"crypto/x509/pkix"
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"encoding/asn1"
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"errors"
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"io"
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"log/slog"
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"math/big"
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"os"
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"github.com/lunixbochs/struc"
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"git.zeroonesoft.cn/golib/rdplib/core"
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"git.zeroonesoft.cn/golib/rdplib/protocol/t125/per"
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)
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var t124_02_98_oid = []byte{0, 0, 20, 124, 0, 1}
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var h221_cs_key = "Duca"
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var h221_sc_key = "McDn"
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/**
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* @see http://msdn.microsoft.com/en-us/library/cc240509.aspx
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*/
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type Message uint16
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const (
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//server -> client
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SC_CORE Message = 0x0C01
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SC_SECURITY = 0x0C02
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SC_NET = 0x0C03
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SC_MCS_MSGCHANNEL = 0x0C04 // TS_UD_SC_MCS_MSGCHANNEL
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//client -> server
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CS_CORE = 0xC001
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CS_SECURITY = 0xC002
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CS_NET = 0xC003
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CS_CLUSTER = 0xC004
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CS_MONITOR = 0xC005
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CS_MCS_MSGCHANNEL = 0xC006 // TS_UD_CS_MCS_MSGCHANNEL
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)
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/**
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* @see http://msdn.microsoft.com/en-us/library/cc240510.aspx
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*/
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type ColorDepth uint16
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const (
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RNS_UD_COLOR_8BPP ColorDepth = 0xCA01
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RNS_UD_COLOR_16BPP_555 = 0xCA02
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RNS_UD_COLOR_16BPP_565 = 0xCA03
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RNS_UD_COLOR_24BPP = 0xCA04
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)
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/**
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* @see http://msdn.microsoft.com/en-us/library/cc240510.aspx
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*/
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type HighColor uint16
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const (
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HIGH_COLOR_4BPP HighColor = 0x0004
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HIGH_COLOR_8BPP = 0x0008
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HIGH_COLOR_15BPP = 0x000f
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HIGH_COLOR_16BPP = 0x0010
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HIGH_COLOR_24BPP = 0x0018
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)
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/**
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* @see http://msdn.microsoft.com/en-us/library/cc240510.aspx
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*/
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type Support uint16
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const (
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RNS_UD_24BPP_SUPPORT uint16 = 0x0001
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RNS_UD_16BPP_SUPPORT = 0x0002
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RNS_UD_15BPP_SUPPORT = 0x0004
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RNS_UD_32BPP_SUPPORT = 0x0008
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)
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/**
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* @see http://msdn.microsoft.com/en-us/library/cc240510.aspx
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*/
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type CapabilityFlag uint16
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const (
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RNS_UD_CS_SUPPORT_ERRINFO_PDU uint16 = 0x0001
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RNS_UD_CS_WANT_32BPP_SESSION = 0x0002
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RNS_UD_CS_SUPPORT_STATUSINFO_PDU = 0x0004
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RNS_UD_CS_STRONG_ASYMMETRIC_KEYS = 0x0008
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RNS_UD_CS_UNUSED = 0x0010
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RNS_UD_CS_VALID_CONNECTION_TYPE = 0x0020
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RNS_UD_CS_SUPPORT_MONITOR_LAYOUT_PDU = 0x0040
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RNS_UD_CS_SUPPORT_NETCHAR_AUTODETECT = 0x0080
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RNS_UD_CS_SUPPORT_DYNVC_GFX_PROTOCOL = 0x0100
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RNS_UD_CS_SUPPORT_DYNAMIC_TIME_ZONE = 0x0200
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RNS_UD_CS_SUPPORT_HEARTBEAT_PDU = 0x0400
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)
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/**
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* @see http://msdn.microsoft.com/en-us/library/cc240510.aspx
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*/
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type ConnectionType uint8
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const (
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CONNECTION_TYPE_MODEM ConnectionType = 0x01
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CONNECTION_TYPE_BROADBAND_LOW = 0x02
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CONNECTION_TYPE_SATELLITEV = 0x03
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CONNECTION_TYPE_BROADBAND_HIGH = 0x04
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CONNECTION_TYPE_WAN = 0x05
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CONNECTION_TYPE_LAN = 0x06
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CONNECTION_TYPE_AUTODETECT = 0x07
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)
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/**
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* @see http://msdn.microsoft.com/en-us/library/cc240510.aspx
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*/
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type VERSION uint32
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const (
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RDP_VERSION_4 VERSION = 0x00080001
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RDP_VERSION_5_PLUS = 0x00080004
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RDP_VERSION_10 = 0x00080005
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RDP_VERSION_10_1 = 0x00080006
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RDP_VERSION_10_2 = 0x00080007
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)
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type Sequence uint16
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const (
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RNS_UD_SAS_DEL Sequence = 0xAA03
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)
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/**
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* @see http://msdn.microsoft.com/en-us/library/cc240511.aspx
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*/
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type EncryptionMethod uint32
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const (
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ENCRYPTION_FLAG_40BIT uint32 = 0x00000001
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ENCRYPTION_FLAG_128BIT = 0x00000002
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ENCRYPTION_FLAG_56BIT = 0x00000008
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FIPS_ENCRYPTION_FLAG = 0x00000010
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)
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/**
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* @see http://msdn.microsoft.com/en-us/library/cc240518.aspx
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*/
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type EncryptionLevel uint32
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const (
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ENCRYPTION_LEVEL_NONE EncryptionLevel = 0x00000000
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ENCRYPTION_LEVEL_LOW = 0x00000001
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ENCRYPTION_LEVEL_CLIENT_COMPATIBLE = 0x00000002
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ENCRYPTION_LEVEL_HIGH = 0x00000003
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ENCRYPTION_LEVEL_FIPS = 0x00000004
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)
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/**
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* @see http://msdn.microsoft.com/en-us/library/cc240513.aspx
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*/
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type ChannelOptions uint32
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const (
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CHANNEL_OPTION_INITIALIZED ChannelOptions = 0x80000000
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CHANNEL_OPTION_ENCRYPT_RDP = 0x40000000
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CHANNEL_OPTION_ENCRYPT_SC = 0x20000000
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CHANNEL_OPTION_ENCRYPT_CS = 0x10000000
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CHANNEL_OPTION_PRI_HIGH = 0x08000000
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CHANNEL_OPTION_PRI_MED = 0x04000000
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CHANNEL_OPTION_PRI_LOW = 0x02000000
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CHANNEL_OPTION_COMPRESS_RDP = 0x00800000
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CHANNEL_OPTION_COMPRESS = 0x00400000
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CHANNEL_OPTION_SHOW_PROTOCOL = 0x00200000
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REMOTE_CONTROL_PERSISTENT = 0x00100000
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)
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/**
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* IBM_101_102_KEYS is the most common keyboard type
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*/
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type KeyboardType uint32
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const (
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KT_IBM_PC_XT_83_KEY KeyboardType = 0x00000001
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KT_OLIVETTI = 0x00000002
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KT_IBM_PC_AT_84_KEY = 0x00000003
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KT_IBM_101_102_KEYS = 0x00000004
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KT_NOKIA_1050 = 0x00000005
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KT_NOKIA_9140 = 0x00000006
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KT_JAPANESE = 0x00000007
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)
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/**
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* @see http://technet.microsoft.com/en-us/library/cc766503%28WS.10%29.aspx
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*/
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type KeyboardLayout uint32
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const (
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ARABIC KeyboardLayout = 0x00000401
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BULGARIAN = 0x00000402
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CHINESE_US_KEYBOARD = 0x00000404
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CZECH = 0x00000405
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DANISH = 0x00000406
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GERMAN = 0x00000407
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GREEK = 0x00000408
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US = 0x00000409
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SPANISH = 0x0000040a
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FINNISH = 0x0000040b
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FRENCH = 0x0000040c
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HEBREW = 0x0000040d
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HUNGARIAN = 0x0000040e
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ICELANDIC = 0x0000040f
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ITALIAN = 0x00000410
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JAPANESE = 0x00000411
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KOREAN = 0x00000412
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DUTCH = 0x00000413
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NORWEGIAN = 0x00000414
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)
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/**
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* @see http://msdn.microsoft.com/en-us/library/cc240521.aspx
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*/
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type CertificateType uint32
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|
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const (
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CERT_CHAIN_VERSION_1 CertificateType = 0x00000001
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CERT_CHAIN_VERSION_2 = 0x00000002
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)
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|
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type ChannelDef struct {
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Name string `struc:"little"`
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Options uint32 `struc:"little"`
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}
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|
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type ClientCoreData struct {
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RdpVersion VERSION `struc:"uint32,little"`
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DesktopWidth uint16 `struc:"little"`
|
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DesktopHeight uint16 `struc:"little"`
|
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ColorDepth ColorDepth `struc:"little"`
|
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SasSequence Sequence `struc:"little"`
|
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KbdLayout KeyboardLayout `struc:"little"`
|
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ClientBuild uint32 `struc:"little"`
|
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ClientName [32]byte `struc:"[32]byte"`
|
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KeyboardType uint32 `struc:"little"`
|
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KeyboardSubType uint32 `struc:"little"`
|
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KeyboardFnKeys uint32 `struc:"little"`
|
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ImeFileName [64]byte `struc:"[64]byte"`
|
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PostBeta2ColorDepth ColorDepth `struc:"little"`
|
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ClientProductId uint16 `struc:"little"`
|
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SerialNumber uint32 `struc:"little"`
|
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HighColorDepth HighColor `struc:"little"`
|
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SupportedColorDepths uint16 `struc:"little"`
|
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EarlyCapabilityFlags uint16 `struc:"little"`
|
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ClientDigProductId [64]byte `struc:"[64]byte"`
|
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ConnectionType uint8 `struc:"uint8"`
|
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Pad1octet uint8 `struc:"uint8"`
|
||||
ServerSelectedProtocol uint32 `struc:"little"`
|
||||
}
|
||||
|
||||
func NewClientCoreData(kbdLayout uint32, keyboardType uint32, keyboardSubType uint32) *ClientCoreData {
|
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name, _ := os.Hostname()
|
||||
var ClientName [32]byte
|
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copy(ClientName[:], core.UnicodeEncode(name)[:])
|
||||
return &ClientCoreData{
|
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RDP_VERSION_10_2, 1280, 800, RNS_UD_COLOR_8BPP,
|
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RNS_UD_SAS_DEL, KeyboardLayout(kbdLayout), 22621, ClientName, keyboardType,
|
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keyboardSubType, 12, [64]byte{}, RNS_UD_COLOR_8BPP, 1, 0, HIGH_COLOR_24BPP,
|
||||
RNS_UD_15BPP_SUPPORT | RNS_UD_16BPP_SUPPORT | RNS_UD_24BPP_SUPPORT | RNS_UD_32BPP_SUPPORT,
|
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RNS_UD_CS_SUPPORT_ERRINFO_PDU | RNS_UD_CS_WANT_32BPP_SESSION | RNS_UD_CS_VALID_CONNECTION_TYPE | RNS_UD_CS_SUPPORT_NETCHAR_AUTODETECT,
|
||||
[64]byte{}, uint8(CONNECTION_TYPE_LAN), 0, 0}
|
||||
}
|
||||
|
||||
func (data *ClientCoreData) Pack() []byte {
|
||||
buff := &bytes.Buffer{}
|
||||
core.WriteUInt16LE(CS_CORE, buff) // 01C0
|
||||
core.WriteUInt16LE(0xd8, buff) // d800
|
||||
struc.Pack(buff, data)
|
||||
return buff.Bytes()
|
||||
}
|
||||
|
||||
type ClientNetworkData struct {
|
||||
ChannelCount uint32
|
||||
ChannelDefArray []ChannelDef
|
||||
}
|
||||
|
||||
func NewClientNetworkData() *ClientNetworkData {
|
||||
n := &ClientNetworkData{ChannelDefArray: make([]ChannelDef, 0, 100)}
|
||||
|
||||
/*var d1 ChannelDef
|
||||
d1.Name = plugin.RDPDR_SVC_CHANNEL_NAME
|
||||
d1.Options = uint32(CHANNEL_OPTION_INITIALIZED | CHANNEL_OPTION_ENCRYPT_RDP |
|
||||
CHANNEL_OPTION_COMPRESS_RDP)
|
||||
n.ChannelDefArray = append(n.ChannelDefArray, d1)
|
||||
|
||||
var d2 ChannelDef
|
||||
d2.Name = plugin.RDPSND_SVC_CHANNEL_NAME
|
||||
d2.Options = uint32(CHANNEL_OPTION_INITIALIZED | CHANNEL_OPTION_ENCRYPT_RDP |
|
||||
CHANNEL_OPTION_COMPRESS_RDP | CHANNEL_OPTION_SHOW_PROTOCOL)
|
||||
n.ChannelDefArray = append(n.ChannelDefArray, d2)*/
|
||||
|
||||
return n
|
||||
}
|
||||
|
||||
func (n *ClientNetworkData) AddVirtualChannel(name string, option uint32) {
|
||||
var d ChannelDef
|
||||
d.Name = name
|
||||
d.Options = option
|
||||
n.ChannelDefArray = append(n.ChannelDefArray, d)
|
||||
n.ChannelCount++
|
||||
}
|
||||
|
||||
func (n *ClientNetworkData) Pack() []byte {
|
||||
buff := &bytes.Buffer{}
|
||||
core.WriteUInt16LE(CS_NET, buff) // type
|
||||
length := uint16(n.ChannelCount*12 + 8)
|
||||
core.WriteUInt16LE(length, buff) // len 8
|
||||
core.WriteUInt32LE(n.ChannelCount, buff)
|
||||
for i := 0; i < int(n.ChannelCount); i++ {
|
||||
v := n.ChannelDefArray[i]
|
||||
var name [8]byte
|
||||
copy(name[:], v.Name)
|
||||
core.WriteBytes(name[:], buff)
|
||||
core.WriteUInt32LE(v.Options, buff)
|
||||
}
|
||||
return buff.Bytes()
|
||||
}
|
||||
|
||||
type ClientSecurityData struct {
|
||||
EncryptionMethods uint32
|
||||
ExtEncryptionMethods uint32
|
||||
}
|
||||
|
||||
func NewClientSecurityData() *ClientSecurityData {
|
||||
return &ClientSecurityData{
|
||||
ENCRYPTION_FLAG_40BIT | ENCRYPTION_FLAG_56BIT | ENCRYPTION_FLAG_128BIT,
|
||||
00}
|
||||
}
|
||||
|
||||
func (d *ClientSecurityData) Pack() []byte {
|
||||
buff := &bytes.Buffer{}
|
||||
core.WriteUInt16LE(CS_SECURITY, buff) // type
|
||||
core.WriteUInt16LE(0x0c, buff) // len 12
|
||||
core.WriteUInt32LE(d.EncryptionMethods, buff)
|
||||
core.WriteUInt32LE(d.ExtEncryptionMethods, buff)
|
||||
return buff.Bytes()
|
||||
}
|
||||
|
||||
type RSAPublicKey struct {
|
||||
Magic uint32 `struc:"little"` //0x31415352
|
||||
Keylen uint32 `struc:"little,sizeof=Modulus"`
|
||||
Bitlen uint32 `struc:"little"`
|
||||
Datalen uint32 `struc:"little"`
|
||||
PubExp uint32 `struc:"little"`
|
||||
Modulus []byte `struc:"little"`
|
||||
Padding []byte `struc:"[8]byte"`
|
||||
}
|
||||
|
||||
type ProprietaryServerCertificate struct {
|
||||
DwSigAlgId uint32 `struc:"little"` //0x00000001
|
||||
DwKeyAlgId uint32 `struc:"little"` //0x00000001
|
||||
PublicKeyBlobType uint16 `struc:"little"` //0x0006
|
||||
PublicKeyBlobLen uint16 `struc:"little,sizeof=PublicKeyBlob"`
|
||||
PublicKeyBlob RSAPublicKey `struc:"little"`
|
||||
SignatureBlobType uint16 `struc:"little"` //0x0008
|
||||
SignatureBlobLen uint16 `struc:"little,sizeof=SignatureBlob"`
|
||||
SignatureBlob []byte `struc:"little"`
|
||||
//PaddingLen uint16 `struc:"little,sizeof=Padding,skip"`
|
||||
Padding []byte `struc:"[8]byte"`
|
||||
}
|
||||
|
||||
func (p *ProprietaryServerCertificate) GetPublicKey() (*rsa.PublicKey, error) {
|
||||
b := new(big.Int).SetBytes(core.Reverse(p.PublicKeyBlob.Modulus))
|
||||
e := new(big.Int).SetInt64(int64(p.PublicKeyBlob.PubExp))
|
||||
return &rsa.PublicKey{N: b, E: int(e.Int64())}, nil
|
||||
}
|
||||
func (p *ProprietaryServerCertificate) Verify() bool {
|
||||
return true
|
||||
}
|
||||
func (p *ProprietaryServerCertificate) Encrypt() []byte {
|
||||
//todo
|
||||
return nil
|
||||
}
|
||||
func (p *ProprietaryServerCertificate) Unpack(r io.Reader) error {
|
||||
p.DwSigAlgId, _ = core.ReadUInt32LE(r)
|
||||
p.DwKeyAlgId, _ = core.ReadUInt32LE(r)
|
||||
p.PublicKeyBlobType, _ = core.ReadUint16LE(r)
|
||||
p.PublicKeyBlobLen, _ = core.ReadUint16LE(r)
|
||||
var b RSAPublicKey
|
||||
b.Magic, _ = core.ReadUInt32LE(r)
|
||||
b.Keylen, _ = core.ReadUInt32LE(r)
|
||||
b.Bitlen, _ = core.ReadUInt32LE(r)
|
||||
b.Datalen, _ = core.ReadUInt32LE(r)
|
||||
b.PubExp, _ = core.ReadUInt32LE(r)
|
||||
b.Modulus, _ = core.ReadBytes(int(b.Keylen)-8, r)
|
||||
b.Padding, _ = core.ReadBytes(8, r)
|
||||
p.PublicKeyBlob = b
|
||||
p.SignatureBlobType, _ = core.ReadUint16LE(r)
|
||||
p.SignatureBlobLen, _ = core.ReadUint16LE(r)
|
||||
p.SignatureBlob, _ = core.ReadBytes(int(p.SignatureBlobLen)-8, r)
|
||||
p.Padding, _ = core.ReadBytes(8, r)
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
type CertBlob struct {
|
||||
CbCert uint32 `struc:"little,sizeof=AbCert"`
|
||||
AbCert []byte `struc:"little"`
|
||||
}
|
||||
type X509CertificateChain struct {
|
||||
NumCertBlobs uint32 `struc:"little,sizeof=CertBlobArray"`
|
||||
CertBlobArray []CertBlob `struc:"little"`
|
||||
Padding []byte `struc:"[12]byte"`
|
||||
}
|
||||
|
||||
func (x *X509CertificateChain) GetPublicKey() (*rsa.PublicKey, error) {
|
||||
data := x.CertBlobArray[len(x.CertBlobArray)-1].AbCert
|
||||
cert, err := x509.ParseCertificate(data)
|
||||
if err != nil {
|
||||
slog.Error("X509 ParseCertificate", "err", err)
|
||||
return nil, err
|
||||
}
|
||||
var rsaPublicKey *rsa.PublicKey
|
||||
if cert.PublicKey == nil {
|
||||
var pubKeyInfo struct {
|
||||
Algorithm pkix.AlgorithmIdentifier
|
||||
SubjectPublicKey asn1.BitString
|
||||
}
|
||||
_, err = asn1.Unmarshal(cert.RawSubjectPublicKeyInfo, &pubKeyInfo)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
rsaPublicKey, err = x509.ParsePKCS1PublicKey(pubKeyInfo.SubjectPublicKey.Bytes)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
} else {
|
||||
rsaPublicKey = cert.PublicKey.(*rsa.PublicKey)
|
||||
}
|
||||
|
||||
return rsaPublicKey, nil
|
||||
}
|
||||
func (x *X509CertificateChain) Verify() bool {
|
||||
return true
|
||||
}
|
||||
func (x *X509CertificateChain) Encrypt() []byte {
|
||||
//todo
|
||||
return nil
|
||||
}
|
||||
func (x *X509CertificateChain) Unpack(r io.Reader) error {
|
||||
return struc.Unpack(r, x)
|
||||
}
|
||||
|
||||
type ServerCoreData struct {
|
||||
RdpVersion VERSION `struc:"uint32,little"`
|
||||
ClientRequestedProtocol uint32 `struc:"little"`
|
||||
EarlyCapabilityFlags uint32 `struc:"little"`
|
||||
}
|
||||
|
||||
func NewServerCoreData() *ServerCoreData {
|
||||
return &ServerCoreData{
|
||||
RDP_VERSION_5_PLUS, 0, 0}
|
||||
}
|
||||
|
||||
func (d *ServerCoreData) Serialize() []byte {
|
||||
return []byte{}
|
||||
}
|
||||
|
||||
func (d *ServerCoreData) ScType() Message {
|
||||
return SC_CORE
|
||||
}
|
||||
func (d *ServerCoreData) Unpack(r io.Reader) error {
|
||||
version, _ := core.ReadUInt32LE(r)
|
||||
d.RdpVersion = VERSION(version)
|
||||
d.ClientRequestedProtocol, _ = core.ReadUInt32LE(r)
|
||||
d.EarlyCapabilityFlags, _ = core.ReadUInt32LE(r)
|
||||
|
||||
return nil
|
||||
//return struc.Unpack(r, d)
|
||||
}
|
||||
|
||||
type ServerNetworkData struct {
|
||||
MCSChannelId uint16 `struc:"little"`
|
||||
ChannelCount uint16 `struc:"little,sizeof=ChannelIdArray"`
|
||||
ChannelIdArray []uint16 `struc:"little"`
|
||||
}
|
||||
|
||||
func NewServerNetworkData() *ServerNetworkData {
|
||||
return &ServerNetworkData{}
|
||||
}
|
||||
func (d *ServerNetworkData) ScType() Message {
|
||||
return SC_NET
|
||||
}
|
||||
func (d *ServerNetworkData) Unpack(r io.Reader) error {
|
||||
return struc.Unpack(r, d)
|
||||
}
|
||||
|
||||
type CertData interface {
|
||||
GetPublicKey() (*rsa.PublicKey, error)
|
||||
Verify() bool
|
||||
Unpack(io.Reader) error
|
||||
}
|
||||
type ServerCertificate struct {
|
||||
DwVersion uint32
|
||||
CertData CertData
|
||||
}
|
||||
|
||||
func (sc *ServerCertificate) Unpack(r io.Reader) error {
|
||||
sc.DwVersion, _ = core.ReadUInt32LE(r)
|
||||
var cd CertData
|
||||
switch CertificateType(sc.DwVersion & 0x7fffffff) {
|
||||
case CERT_CHAIN_VERSION_1:
|
||||
slog.Debug("ProprietaryServerCertificate")
|
||||
cd = &ProprietaryServerCertificate{}
|
||||
case CERT_CHAIN_VERSION_2:
|
||||
slog.Debug("X509CertificateChain")
|
||||
cd = &X509CertificateChain{}
|
||||
default:
|
||||
slog.Error("Unpack", "Unsupported version", sc.DwVersion&0x7fffffff)
|
||||
return errors.New("Unsupported version")
|
||||
}
|
||||
if cd != nil {
|
||||
err := cd.Unpack(r)
|
||||
if err != nil {
|
||||
slog.Error("Unpack", "err", err)
|
||||
return err
|
||||
}
|
||||
}
|
||||
sc.CertData = cd
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
type ServerSecurityData struct {
|
||||
EncryptionMethod uint32 `struc:"little"`
|
||||
EncryptionLevel uint32 `struc:"little"`
|
||||
ServerRandomLen uint32 //0x00000020
|
||||
ServerCertLen uint32
|
||||
ServerRandom []byte
|
||||
ServerCertificate ServerCertificate
|
||||
}
|
||||
|
||||
func NewServerSecurityData() *ServerSecurityData {
|
||||
return &ServerSecurityData{
|
||||
0, 0, 0x00000020, 0, []byte{}, ServerCertificate{}}
|
||||
}
|
||||
func (d *ServerSecurityData) ScType() Message {
|
||||
return SC_SECURITY
|
||||
}
|
||||
func (s *ServerSecurityData) Unpack(r io.Reader) error {
|
||||
s.EncryptionMethod, _ = core.ReadUInt32LE(r)
|
||||
s.EncryptionLevel, _ = core.ReadUInt32LE(r)
|
||||
if !(s.EncryptionMethod == 0 && s.EncryptionLevel == 0) {
|
||||
s.ServerRandomLen, _ = core.ReadUInt32LE(r)
|
||||
s.ServerCertLen, _ = core.ReadUInt32LE(r)
|
||||
s.ServerRandom, _ = core.ReadBytes(int(s.ServerRandomLen), r)
|
||||
var sc ServerCertificate
|
||||
data, _ := core.ReadBytes(int(s.ServerCertLen), r)
|
||||
rd := bytes.NewReader(data)
|
||||
err := sc.Unpack(rd)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
s.ServerCertificate = sc
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// ServerMsgChannelData holds the message channel ID allocated by the server
|
||||
// (TS_UD_SC_MCS_MSGCHANNEL). Used for connect-time network auto-detection.
|
||||
type ServerMsgChannelData struct {
|
||||
MCSChannelId uint16
|
||||
}
|
||||
|
||||
func (d *ServerMsgChannelData) ScType() Message {
|
||||
return SC_MCS_MSGCHANNEL
|
||||
}
|
||||
|
||||
func (d *ServerMsgChannelData) Unpack(r io.Reader) error {
|
||||
var err error
|
||||
d.MCSChannelId, err = core.ReadUint16LE(r)
|
||||
return err
|
||||
}
|
||||
|
||||
// PackClientMsgChannelData serialises the TS_UD_CS_MCS_MSGCHANNEL block.
|
||||
// Advertising this block requests that the server allocate a dedicated message
|
||||
// channel for connect-time network auto-detection (RTT/BW measurements).
|
||||
func PackClientMsgChannelData() []byte {
|
||||
buff := &bytes.Buffer{}
|
||||
core.WriteUInt16LE(CS_MCS_MSGCHANNEL, buff) // type 0xC006
|
||||
core.WriteUInt16LE(0x08, buff) // length = 8
|
||||
core.WriteUInt32LE(0, buff) // flags = 0
|
||||
return buff.Bytes()
|
||||
}
|
||||
|
||||
func MakeConferenceCreateRequest(userData []byte) []byte {
|
||||
buff := &bytes.Buffer{}
|
||||
per.WriteChoice(0, buff) // 00
|
||||
per.WriteObjectIdentifier(t124_02_98_oid, buff) // 05:00:14:7c:00:01
|
||||
per.WriteLength(len(userData)+14, buff)
|
||||
per.WriteChoice(0, buff) // 00
|
||||
per.WriteSelection(0x08, buff) // 08
|
||||
per.WriteNumericString("1", 1, buff) // 00 10
|
||||
per.WritePadding(1, buff) // 00
|
||||
per.WriteNumberOfSet(1, buff) // 01
|
||||
per.WriteChoice(0xc0, buff) // c0
|
||||
per.WriteOctetStream(h221_cs_key, 4, buff) // 00 44:75:63:61
|
||||
per.WriteOctetStream(string(userData), 0, buff)
|
||||
return buff.Bytes()
|
||||
}
|
||||
|
||||
type ScData interface {
|
||||
ScType() Message
|
||||
Unpack(io.Reader) error
|
||||
}
|
||||
|
||||
func ReadConferenceCreateResponse(data []byte) []any {
|
||||
ret := make([]any, 0, 3)
|
||||
|
||||
r := bytes.NewReader(data)
|
||||
per.ReadChoice(r)
|
||||
if !per.ReadObjectIdentifier(r, t124_02_98_oid) {
|
||||
slog.Error("NODE_RDP_PROTOCOL_T125_GCC_BAD_OBJECT_IDENTIFIER_T124")
|
||||
return ret
|
||||
}
|
||||
per.ReadLength(r)
|
||||
per.ReadChoice(r)
|
||||
per.ReadInteger16(r)
|
||||
per.ReadInteger(r)
|
||||
per.ReadEnumerates(r)
|
||||
per.ReadNumberOfSet(r)
|
||||
per.ReadChoice(r)
|
||||
|
||||
if !per.ReadOctetStream(r, h221_sc_key, 4) {
|
||||
slog.Error("NODE_RDP_PROTOCOL_T125_GCC_BAD_H221_SC_KEY")
|
||||
return ret
|
||||
}
|
||||
|
||||
ln, _ := per.ReadLength(r)
|
||||
for ln > 0 {
|
||||
t, _ := core.ReadUint16LE(r)
|
||||
l, _ := core.ReadUint16LE(r)
|
||||
dataBytes, _ := core.ReadBytes(int(l)-4, r)
|
||||
ln = ln - l
|
||||
var d ScData
|
||||
switch Message(t) {
|
||||
case SC_CORE:
|
||||
d = &ServerCoreData{}
|
||||
case SC_SECURITY:
|
||||
d = &ServerSecurityData{}
|
||||
case SC_NET:
|
||||
d = &ServerNetworkData{}
|
||||
case SC_MCS_MSGCHANNEL:
|
||||
d = &ServerMsgChannelData{}
|
||||
default:
|
||||
slog.Debug("ReadConferenceCreateResponse: ignoring unknown block", "type", t)
|
||||
continue
|
||||
}
|
||||
|
||||
if d != nil {
|
||||
r := bytes.NewReader(dataBytes)
|
||||
err := d.Unpack(r)
|
||||
if err != nil {
|
||||
slog.Warn("ReadConferenceCreateResponse", "err", err)
|
||||
}
|
||||
ret = append(ret, d)
|
||||
}
|
||||
}
|
||||
|
||||
return ret
|
||||
}
|
||||
@@ -0,0 +1,753 @@
|
||||
package t125
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"errors"
|
||||
"fmt"
|
||||
"io"
|
||||
"log/slog"
|
||||
"reflect"
|
||||
"time"
|
||||
|
||||
// "git.zeroonesoft.cn/golib/rdplib/plugin/cliprdr"
|
||||
"git.zeroonesoft.cn/golib/rdplib/plugin/drdynvc"
|
||||
"git.zeroonesoft.cn/golib/rdplib/plugin/rail"
|
||||
"git.zeroonesoft.cn/golib/rdplib/plugin/rdpsnd"
|
||||
|
||||
"git.zeroonesoft.cn/golib/rdplib/core"
|
||||
"git.zeroonesoft.cn/golib/rdplib/emission"
|
||||
"git.zeroonesoft.cn/golib/rdplib/protocol/t125/ber"
|
||||
"git.zeroonesoft.cn/golib/rdplib/protocol/t125/gcc"
|
||||
"git.zeroonesoft.cn/golib/rdplib/protocol/t125/per"
|
||||
)
|
||||
|
||||
// take idea from https://github.com/Madnikulin50/gordp
|
||||
|
||||
// Multiple Channel Service layer
|
||||
|
||||
type MCSMessage uint8
|
||||
|
||||
const (
|
||||
MCS_TYPE_CONNECT_INITIAL MCSMessage = 0x65
|
||||
MCS_TYPE_CONNECT_RESPONSE = 0x66
|
||||
)
|
||||
|
||||
type MCSDomainPDU uint16
|
||||
|
||||
const (
|
||||
ERECT_DOMAIN_REQUEST MCSDomainPDU = 1
|
||||
DISCONNECT_PROVIDER_ULTIMATUM = 8
|
||||
ATTACH_USER_REQUEST = 10
|
||||
ATTACH_USER_CONFIRM = 11
|
||||
CHANNEL_JOIN_REQUEST = 14
|
||||
CHANNEL_JOIN_CONFIRM = 15
|
||||
SEND_DATA_REQUEST = 25
|
||||
SEND_DATA_INDICATION = 26
|
||||
)
|
||||
|
||||
const (
|
||||
MCS_GLOBAL_CHANNEL_ID uint16 = 1003
|
||||
MCS_USERCHANNEL_BASE = 1001
|
||||
)
|
||||
|
||||
const (
|
||||
GLOBAL_CHANNEL_NAME = "global"
|
||||
)
|
||||
|
||||
/**
|
||||
* Format MCS PDULayer header packet
|
||||
* @param mcsPdu {integer}
|
||||
* @param options {integer}
|
||||
* @returns {type.UInt8} headers
|
||||
*/
|
||||
func writeMCSPDUHeader(mcsPdu MCSDomainPDU, options uint8, w io.Writer) {
|
||||
core.WriteUInt8((uint8(mcsPdu)<<2)|options, w)
|
||||
}
|
||||
|
||||
func readMCSPDUHeader(options uint8, mcsPdu MCSDomainPDU) bool {
|
||||
return (options >> 2) == uint8(mcsPdu)
|
||||
}
|
||||
|
||||
type DomainParameters struct {
|
||||
MaxChannelIds int
|
||||
MaxUserIds int
|
||||
MaxTokenIds int
|
||||
NumPriorities int
|
||||
MinThoughput int
|
||||
MaxHeight int
|
||||
MaxMCSPDUsize int
|
||||
ProtocolVersion int
|
||||
}
|
||||
|
||||
/**
|
||||
* @see http://www.itu.int/rec/T-REC-T.125-199802-I/en page 25
|
||||
* @returns {asn1.univ.Sequence}
|
||||
*/
|
||||
func NewDomainParameters(
|
||||
maxChannelIds int,
|
||||
maxUserIds int,
|
||||
maxTokenIds int,
|
||||
numPriorities int,
|
||||
minThoughput int,
|
||||
maxHeight int,
|
||||
maxMCSPDUsize int,
|
||||
protocolVersion int) *DomainParameters {
|
||||
return &DomainParameters{maxChannelIds, maxUserIds, maxTokenIds,
|
||||
numPriorities, minThoughput, maxHeight, maxMCSPDUsize, protocolVersion}
|
||||
}
|
||||
|
||||
func (d *DomainParameters) BER() []byte {
|
||||
buff := &bytes.Buffer{}
|
||||
ber.WriteInteger(d.MaxChannelIds, buff)
|
||||
ber.WriteInteger(d.MaxUserIds, buff)
|
||||
ber.WriteInteger(d.MaxTokenIds, buff)
|
||||
ber.WriteInteger(1, buff)
|
||||
ber.WriteInteger(0, buff)
|
||||
ber.WriteInteger(1, buff)
|
||||
ber.WriteInteger(d.MaxMCSPDUsize, buff)
|
||||
ber.WriteInteger(2, buff)
|
||||
return buff.Bytes()
|
||||
}
|
||||
|
||||
func ReadDomainParameters(r io.Reader) (*DomainParameters, error) {
|
||||
if !ber.ReadUniversalTag(ber.TAG_SEQUENCE, true, r) {
|
||||
return nil, errors.New("bad BER tags")
|
||||
}
|
||||
d := &DomainParameters{}
|
||||
ber.ReadLength(r)
|
||||
|
||||
d.MaxChannelIds, _ = ber.ReadInteger(r)
|
||||
d.MaxUserIds, _ = ber.ReadInteger(r)
|
||||
d.MaxTokenIds, _ = ber.ReadInteger(r)
|
||||
ber.ReadInteger(r)
|
||||
ber.ReadInteger(r)
|
||||
ber.ReadInteger(r)
|
||||
d.MaxMCSPDUsize, _ = ber.ReadInteger(r)
|
||||
ber.ReadInteger(r)
|
||||
return d, nil
|
||||
}
|
||||
|
||||
/**
|
||||
* @see http://www.itu.int/rec/T-REC-T.125-199802-I/en page 25
|
||||
* @param userData {Buffer}
|
||||
* @returns {asn1.univ.Sequence}
|
||||
*/
|
||||
type ConnectInitial struct {
|
||||
CallingDomainSelector []byte
|
||||
CalledDomainSelector []byte
|
||||
UpwardFlag bool
|
||||
TargetParameters DomainParameters
|
||||
MinimumParameters DomainParameters
|
||||
MaximumParameters DomainParameters
|
||||
UserData []byte
|
||||
}
|
||||
|
||||
func NewConnectInitial(userData []byte) ConnectInitial {
|
||||
return ConnectInitial{[]byte{0x1},
|
||||
[]byte{0x1},
|
||||
true,
|
||||
*NewDomainParameters(34, 2, 0, 1, 0, 1, 0xffff, 2),
|
||||
*NewDomainParameters(1, 1, 1, 1, 0, 1, 0x420, 2),
|
||||
*NewDomainParameters(0xffff, 0xfc17, 0xffff, 1, 0, 1, 0xffff, 2),
|
||||
userData}
|
||||
}
|
||||
|
||||
func (c *ConnectInitial) BER() []byte {
|
||||
buff := &bytes.Buffer{}
|
||||
ber.WriteOctetstring(string(c.CallingDomainSelector), buff)
|
||||
ber.WriteOctetstring(string(c.CalledDomainSelector), buff)
|
||||
ber.WriteBoolean(c.UpwardFlag, buff)
|
||||
ber.WriteEncodedDomainParams(c.TargetParameters.BER(), buff)
|
||||
ber.WriteEncodedDomainParams(c.MinimumParameters.BER(), buff)
|
||||
ber.WriteEncodedDomainParams(c.MaximumParameters.BER(), buff)
|
||||
ber.WriteOctetstring(string(c.UserData), buff)
|
||||
return buff.Bytes()
|
||||
}
|
||||
|
||||
/**
|
||||
* @see http://www.itu.int/rec/T-REC-T.125-199802-I/en page 25
|
||||
* @returns {asn1.univ.Sequence}
|
||||
*/
|
||||
|
||||
type ConnectResponse struct {
|
||||
result uint8
|
||||
calledConnectId int
|
||||
domainParameters *DomainParameters
|
||||
userData []byte
|
||||
}
|
||||
|
||||
func NewConnectResponse(userData []byte) *ConnectResponse {
|
||||
return &ConnectResponse{0,
|
||||
0,
|
||||
NewDomainParameters(22, 3, 0, 1, 0, 1, 0xfff8, 2),
|
||||
userData}
|
||||
}
|
||||
|
||||
func ReadConnectResponse(r io.Reader) (*ConnectResponse, error) {
|
||||
c := &ConnectResponse{}
|
||||
var err error
|
||||
_, err = ber.ReadApplicationTag(MCS_TYPE_CONNECT_RESPONSE, r)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
c.result, err = ber.ReadEnumerated(r)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
c.calledConnectId, err = ber.ReadInteger(r)
|
||||
c.domainParameters, err = ReadDomainParameters(r)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
if !ber.ReadUniversalTag(ber.TAG_OCTET_STRING, false, r) {
|
||||
return nil, errors.New("invalid expected BER tag")
|
||||
}
|
||||
dataLen, _ := ber.ReadLength(r)
|
||||
c.userData, err = core.ReadBytes(dataLen, r)
|
||||
return c, err
|
||||
}
|
||||
|
||||
type MCSChannelInfo struct {
|
||||
ID uint16
|
||||
Name string
|
||||
}
|
||||
|
||||
type MCS struct {
|
||||
emission.Emitter
|
||||
transport core.Transport
|
||||
recvOpCode MCSDomainPDU
|
||||
sendOpCode MCSDomainPDU
|
||||
channels []MCSChannelInfo
|
||||
}
|
||||
|
||||
func NewMCS(t core.Transport, recvOpCode MCSDomainPDU, sendOpCode MCSDomainPDU) *MCS {
|
||||
m := &MCS{
|
||||
*emission.NewEmitter(),
|
||||
t,
|
||||
recvOpCode,
|
||||
sendOpCode,
|
||||
[]MCSChannelInfo{{MCS_GLOBAL_CHANNEL_ID, GLOBAL_CHANNEL_NAME}},
|
||||
}
|
||||
|
||||
m.transport.On("close", func() {
|
||||
m.Emit("close")
|
||||
}).On("error", func(err error) {
|
||||
m.Emit("error", err)
|
||||
})
|
||||
return m
|
||||
}
|
||||
|
||||
func (x *MCS) Read(b []byte) (n int, err error) {
|
||||
return x.transport.Read(b)
|
||||
}
|
||||
|
||||
func (x *MCS) Write(b []byte) (n int, err error) {
|
||||
return x.transport.Write(b)
|
||||
}
|
||||
|
||||
func (m *MCS) Close() error {
|
||||
return m.transport.Close()
|
||||
}
|
||||
|
||||
type MCSClient struct {
|
||||
*MCS
|
||||
clientCoreData *gcc.ClientCoreData
|
||||
clientNetworkData *gcc.ClientNetworkData
|
||||
clientSecurityData *gcc.ClientSecurityData
|
||||
// lowColorDepth：SetSessionColorDepth(16/24) 置位， Dynvc-GFX 能力位
|
||||
// 需要跳过（该端点要求 32bpp 会话）
|
||||
lowColorDepth bool
|
||||
|
||||
serverCoreData *gcc.ServerCoreData
|
||||
serverNetworkData *gcc.ServerNetworkData
|
||||
serverSecurityData *gcc.ServerSecurityData
|
||||
|
||||
channelsConnected int
|
||||
userId uint16
|
||||
nbChannelRequested int
|
||||
pendingJoins int // 并行突发加入后尚未收到确认的 SVC 通道数
|
||||
messageChannelId uint16 // from SC_MCS_MSGCHANNEL; 0 = not negotiated
|
||||
messageChannelJoined bool
|
||||
bwStartTime time.Time // timestamp of last RDP_BW_START for timeDelta calculation
|
||||
}
|
||||
|
||||
func NewMCSClient(t core.Transport, kbdLayout uint32, keyboardType uint32, keyboardSubType uint32) *MCSClient {
|
||||
c := &MCSClient{
|
||||
MCS: NewMCS(t, SEND_DATA_INDICATION, SEND_DATA_REQUEST),
|
||||
clientCoreData: gcc.NewClientCoreData(kbdLayout, keyboardType, keyboardSubType),
|
||||
clientNetworkData: gcc.NewClientNetworkData(),
|
||||
clientSecurityData: gcc.NewClientSecurityData(),
|
||||
userId: 1 + MCS_USERCHANNEL_BASE,
|
||||
}
|
||||
c.transport.On("connect", c.connect)
|
||||
return c
|
||||
}
|
||||
|
||||
func (c *MCSClient) SetClientDesktop(width, height uint16) {
|
||||
c.clientCoreData.DesktopWidth = width
|
||||
c.clientCoreData.DesktopHeight = height
|
||||
}
|
||||
|
||||
// SetClientName 覆盖客户端计算机名（ClientCoreData.ClientName，UTF-16LE，
|
||||
// 字段共 32 字节，超长截断）。服务端按该名字管理 \\tsclient 重定向映射，
|
||||
// 同名客户端残留（非正常断开）会让后续同名会话的映射失效——Explorer
|
||||
// 打开 \\tsclient\<名> 报“试图访问无效的地址”且 rdpdr 通道零 IRP
|
||||
// （RDPDR-2）。wasm 下 os.Hostname 回退值恒为 "js"，必须每次连接随机化。
|
||||
func (c *MCSClient) SetClientName(name string) {
|
||||
var buf [32]byte
|
||||
copy(buf[:], core.UnicodeEncode(name))
|
||||
c.clientCoreData.ClientName = buf
|
||||
}
|
||||
|
||||
// SetSessionColorDepth 请求会话颜色位数（16/24/32，其它值按 32 处理）。
|
||||
// 32bpp = highColorDepth 24BPP + WANT_32BPP_SESSION（mstsc 默认）；
|
||||
// 16/24bpp 清除 WANT_32BPP_SESSION 并收紧 supportedColorDepths。
|
||||
// 注意 RDPGFX 会话（RemoteFX/H264 模式）表面恒为 32bpp，此选项只在
|
||||
// 传统位图管线生效。
|
||||
// SetSessionColorDepth 请求会话颜色位数（16/24/32，其它值按 32 处理）。
|
||||
// 实测（Win10 19041）三个坑：
|
||||
// 1. supportedColorDepths 若不含 24/32bpp 支持位，服务器在 MCS 握手
|
||||
// 阶段直接断连（无 ERRINFO）——支持位恒为全量（与 FreeRDP 一致）。
|
||||
// 2. 低色深时必须同时清除 SUPPORT_DYNVC_GFX_PROTOCOL（0x200）：
|
||||
// 该位声明 32bpp 的 Dynvc-GFX 端点，与 16bpp 会话矛盾，服务器会
|
||||
// 进入不一致状态（fastpath SURFCMDS 泛滥、音频 DVC 不初始化）。
|
||||
// SetClientDynvcProtocol 会在低色深时跳过该位（drdynvc 通道保留）。
|
||||
// 3. 色深协商只通过 highColorDepth + postBeta2ColorDepth +
|
||||
// WANT_32BPP_SESSION 位表达。
|
||||
// 注意 RDPGFX 会话（RemoteFX/H264 模式）表面恒为 32bpp，此选项只在
|
||||
// 传统位图管线生效。
|
||||
func (c *MCSClient) SetSessionColorDepth(bpp int) {
|
||||
d := c.clientCoreData
|
||||
switch bpp {
|
||||
case 16:
|
||||
d.HighColorDepth = gcc.HIGH_COLOR_16BPP
|
||||
d.PostBeta2ColorDepth = gcc.RNS_UD_COLOR_16BPP_565
|
||||
d.EarlyCapabilityFlags &^= gcc.RNS_UD_CS_WANT_32BPP_SESSION |
|
||||
gcc.RNS_UD_CS_SUPPORT_DYNVC_GFX_PROTOCOL
|
||||
c.lowColorDepth = true
|
||||
case 24:
|
||||
d.HighColorDepth = gcc.HIGH_COLOR_24BPP
|
||||
d.PostBeta2ColorDepth = gcc.RNS_UD_COLOR_24BPP
|
||||
d.EarlyCapabilityFlags &^= gcc.RNS_UD_CS_WANT_32BPP_SESSION |
|
||||
gcc.RNS_UD_CS_SUPPORT_DYNVC_GFX_PROTOCOL
|
||||
c.lowColorDepth = true
|
||||
default:
|
||||
// 32bpp：保持 NewClientCoreData 的默认（WANT_32BPP_SESSION）
|
||||
}
|
||||
}
|
||||
|
||||
func (c *MCSClient) SetClientDynvcProtocol() {
|
||||
// 低色深会话不支持 Dynvc-GFX 端点（见 SetSessionColorDepth），
|
||||
// drdynvc 通道本身保留（剪贴板图片/音频 DVC 仍需要）。
|
||||
if !c.lowColorDepth {
|
||||
c.clientCoreData.EarlyCapabilityFlags |= gcc.RNS_UD_CS_SUPPORT_DYNVC_GFX_PROTOCOL
|
||||
}
|
||||
c.clientNetworkData.AddVirtualChannel(drdynvc.ChannelName, drdynvc.ChannelOption)
|
||||
}
|
||||
|
||||
func (c *MCSClient) SetClientRemoteProgram() {
|
||||
c.clientNetworkData.AddVirtualChannel(rail.ChannelName, rail.ChannelOption)
|
||||
}
|
||||
|
||||
func (c *MCSClient) SetClientSoundProtocol() {
|
||||
c.clientNetworkData.AddVirtualChannel(rdpsnd.ChannelName, rdpsnd.ChannelOption)
|
||||
}
|
||||
|
||||
func (c *MCSClient) SetClientDeviceRedirection() {
|
||||
c.clientNetworkData.AddVirtualChannel("rdpdr",
|
||||
uint32(gcc.CHANNEL_OPTION_INITIALIZED|gcc.CHANNEL_OPTION_ENCRYPT_RDP|gcc.CHANNEL_OPTION_COMPRESS_RDP))
|
||||
}
|
||||
|
||||
func (c *MCSClient) SetClientClipboard() {
|
||||
c.clientNetworkData.AddVirtualChannel("cliprdr",
|
||||
uint32(gcc.CHANNEL_OPTION_INITIALIZED|gcc.CHANNEL_OPTION_ENCRYPT_RDP|gcc.CHANNEL_OPTION_COMPRESS_RDP))
|
||||
}
|
||||
|
||||
func (c *MCSClient) connect(selectedProtocol uint32) {
|
||||
slog.Debug("connect", "selectedProtocol", selectedProtocol)
|
||||
c.clientCoreData.ServerSelectedProtocol = selectedProtocol
|
||||
|
||||
slog.Debug("connnect", "clientCoreData", c.clientCoreData)
|
||||
slog.Debug("connect", "clientNetworkData", c.clientNetworkData)
|
||||
slog.Debug("connect", "clientSecurityData", c.clientSecurityData)
|
||||
// sendConnectclientCoreDataInitial
|
||||
userDataBuff := bytes.Buffer{}
|
||||
userDataBuff.Write(c.clientCoreData.Pack())
|
||||
userDataBuff.Write(c.clientNetworkData.Pack())
|
||||
userDataBuff.Write(c.clientSecurityData.Pack())
|
||||
userDataBuff.Write(gcc.PackClientMsgChannelData())
|
||||
|
||||
slog.Debug("userData", "data", core.Hex(userDataBuff.Bytes()), "len", len(userDataBuff.Bytes()))
|
||||
ccReq := gcc.MakeConferenceCreateRequest(userDataBuff.Bytes())
|
||||
slog.Debug("ccReq", "data", core.Hex(ccReq), "len", len(ccReq))
|
||||
connectInitial := NewConnectInitial(ccReq)
|
||||
connectInitialBerEncoded := connectInitial.BER()
|
||||
|
||||
dataBuff := &bytes.Buffer{}
|
||||
ber.WriteApplicationTag(uint8(MCS_TYPE_CONNECT_INITIAL), len(connectInitialBerEncoded), dataBuff)
|
||||
dataBuff.Write(connectInitialBerEncoded)
|
||||
slog.Debug("send connet initial", "data", core.Hex(dataBuff.Bytes()), "len", len(dataBuff.Bytes()))
|
||||
|
||||
_, err := c.transport.Write(dataBuff.Bytes())
|
||||
if err != nil {
|
||||
c.Emit("error", errors.New(fmt.Sprintf("mcs sendConnectInitial write error %v", err)))
|
||||
return
|
||||
}
|
||||
slog.Debug("mcs wait for data event")
|
||||
c.transport.Once("data", c.recvConnectResponse)
|
||||
}
|
||||
|
||||
func (c *MCSClient) recvConnectResponse(s []byte) {
|
||||
slog.Debug("mcs recvConnectResponse", "s", core.Hex(s))
|
||||
cResp, err := ReadConnectResponse(bytes.NewReader(s))
|
||||
if err != nil {
|
||||
c.Emit("error", errors.New(fmt.Sprintf("ReadConnectResponse %v", err)))
|
||||
return
|
||||
}
|
||||
// record server gcc block
|
||||
serverSettings := gcc.ReadConferenceCreateResponse(cResp.userData)
|
||||
for _, v := range serverSettings {
|
||||
switch v.(type) {
|
||||
case *gcc.ServerSecurityData:
|
||||
c.serverSecurityData = v.(*gcc.ServerSecurityData)
|
||||
|
||||
case *gcc.ServerCoreData:
|
||||
c.serverCoreData = v.(*gcc.ServerCoreData)
|
||||
|
||||
case *gcc.ServerNetworkData:
|
||||
c.serverNetworkData = v.(*gcc.ServerNetworkData)
|
||||
|
||||
case *gcc.ServerMsgChannelData:
|
||||
c.messageChannelId = v.(*gcc.ServerMsgChannelData).MCSChannelId
|
||||
slog.Debug("SC_MCS_MSGCHANNEL", "messageChannelId", c.messageChannelId)
|
||||
|
||||
default:
|
||||
slog.Warn("recvConnectResponse: unhandled server gcc block", "type", reflect.TypeOf(v))
|
||||
}
|
||||
}
|
||||
c.sendErectDomainRequest()
|
||||
c.sendAttachUserRequest()
|
||||
|
||||
c.transport.Once("data", c.recvAttachUserConfirm)
|
||||
}
|
||||
|
||||
func (c *MCSClient) sendErectDomainRequest() {
|
||||
buff := &bytes.Buffer{}
|
||||
writeMCSPDUHeader(ERECT_DOMAIN_REQUEST, 0, buff)
|
||||
per.WriteInteger(0, buff)
|
||||
per.WriteInteger(0, buff)
|
||||
c.transport.Write(buff.Bytes())
|
||||
}
|
||||
|
||||
func (c *MCSClient) sendAttachUserRequest() {
|
||||
buff := &bytes.Buffer{}
|
||||
writeMCSPDUHeader(ATTACH_USER_REQUEST, 0, buff)
|
||||
c.transport.Write(buff.Bytes())
|
||||
}
|
||||
|
||||
func (c *MCSClient) recvAttachUserConfirm(s []byte) {
|
||||
slog.Debug("mcs recvAttachUserConfirm", "s", core.Hex(s))
|
||||
r := bytes.NewReader(s)
|
||||
|
||||
option, err := core.ReadUInt8(r)
|
||||
if err != nil {
|
||||
c.Emit("error", err)
|
||||
return
|
||||
}
|
||||
|
||||
if !readMCSPDUHeader(option, ATTACH_USER_CONFIRM) {
|
||||
c.Emit("error", errors.New("NODE_RDP_PROTOCOL_T125_MCS_BAD_HEADER"))
|
||||
return
|
||||
}
|
||||
|
||||
e, err := per.ReadEnumerates(r)
|
||||
if err != nil {
|
||||
c.Emit("error", err)
|
||||
return
|
||||
}
|
||||
if e != 0 {
|
||||
c.Emit("error", errors.New("NODE_RDP_PROTOCOL_T125_MCS_SERVER_REJECT_USER'"))
|
||||
return
|
||||
}
|
||||
|
||||
userId, _ := per.ReadInteger16(r)
|
||||
userId += MCS_USERCHANNEL_BASE
|
||||
c.userId = userId
|
||||
|
||||
c.channels = append(c.channels, MCSChannelInfo{userId, "user"})
|
||||
c.connectChannels()
|
||||
}
|
||||
|
||||
func (c *MCSClient) connectChannels() {
|
||||
slog.Debug("connectChannels", "channelsConnected", c.channelsConnected, "channels", c.channels)
|
||||
if c.channelsConnected < len(c.channels) {
|
||||
// sendChannelJoinRequest
|
||||
c.sendChannelJoinRequest(c.channels[c.channelsConnected].ID)
|
||||
|
||||
c.transport.Once("data", c.recvChannelJoinConfirm)
|
||||
return
|
||||
}
|
||||
|
||||
// Join the message channel (for connect-time auto-detection) before SVCs.
|
||||
if c.messageChannelId != 0 && !c.messageChannelJoined {
|
||||
c.messageChannelJoined = true
|
||||
c.sendChannelJoinRequest(c.messageChannelId)
|
||||
c.transport.Once("data", c.recvChannelJoinConfirm)
|
||||
return
|
||||
}
|
||||
|
||||
if c.nbChannelRequested == 0 && int(c.serverNetworkData.ChannelCount) > 0 {
|
||||
// 并行突发加入全部 SVC 静态通道（mstsc 同款）：原先串行逐个等
|
||||
// 确认，rdpdr 排在队尾，其 join 在服务端 LogonNotify 之后 ~100ms
|
||||
// 才完成——登录期驱动映射（winlogon→drprov 按"当时的设备表"创建
|
||||
// \\TSCLIENT\<名> 连接）因此永远看不到我们的设备，`dir
|
||||
// \\tsclient\<名>` 恒为"设备没有连接"(2250)。并行发送让 rdpdr
|
||||
// 与其余通道同时就绪，抢在 LogonNotify 之前。
|
||||
for i := 0; i < int(c.serverNetworkData.ChannelCount); i++ {
|
||||
c.sendChannelJoinRequest(c.serverNetworkData.ChannelIdArray[i])
|
||||
}
|
||||
c.nbChannelRequested = int(c.serverNetworkData.ChannelCount)
|
||||
c.pendingJoins = int(c.serverNetworkData.ChannelCount)
|
||||
// 单个持久监听 + 计数：emission 对同一条数据事件会触发全部
|
||||
// 监听器，N×Once 会在首个确认上重复消费（实测导致通道表重复
|
||||
// 追加与 MCS opcode 错误），故用 Off 在计数归零后摘除。
|
||||
c.transport.On("data", c.recvChannelJoinConfirm)
|
||||
return
|
||||
}
|
||||
if c.pendingJoins > 0 {
|
||||
// 并行突发确认进行中，由 recvChannelJoinConfirm 计数收尾。
|
||||
return
|
||||
}
|
||||
c.transport.On("data", c.recvData)
|
||||
// send client and sever gcc informations callback to sec
|
||||
clientData := make([]any, 0)
|
||||
clientData = append(clientData, c.clientCoreData)
|
||||
clientData = append(clientData, c.clientSecurityData)
|
||||
clientData = append(clientData, c.clientNetworkData)
|
||||
|
||||
serverData := make([]any, 0)
|
||||
serverData = append(serverData, c.serverCoreData)
|
||||
serverData = append(serverData, c.serverSecurityData)
|
||||
c.Emit("connect", clientData, serverData, c.userId, c.channels)
|
||||
}
|
||||
|
||||
func (c *MCSClient) sendChannelJoinRequest(channelId uint16) {
|
||||
slog.Debug("sendChannelJoinRequest", "channelId", channelId)
|
||||
buff := &bytes.Buffer{}
|
||||
writeMCSPDUHeader(CHANNEL_JOIN_REQUEST, 0, buff)
|
||||
per.WriteInteger16(c.userId-MCS_USERCHANNEL_BASE, buff)
|
||||
per.WriteInteger16(channelId, buff)
|
||||
c.transport.Write(buff.Bytes())
|
||||
}
|
||||
|
||||
func (c *MCSClient) recvData(s []byte) {
|
||||
r := bytes.NewReader(s)
|
||||
option, err := core.ReadUInt8(r)
|
||||
if err != nil {
|
||||
c.Emit("error", err)
|
||||
return
|
||||
}
|
||||
|
||||
if readMCSPDUHeader(option, DISCONNECT_PROVIDER_ULTIMATUM) {
|
||||
c.Emit("error", errors.New("MCS DISCONNECT_PROVIDER_ULTIMATUM"))
|
||||
c.transport.Close()
|
||||
return
|
||||
} else if !readMCSPDUHeader(option, c.recvOpCode) {
|
||||
c.Emit("error", errors.New("Invalid expected MCS opcode receive data"))
|
||||
return
|
||||
}
|
||||
|
||||
userId, _ := per.ReadInteger16(r)
|
||||
userId += MCS_USERCHANNEL_BASE
|
||||
|
||||
channelId, _ := per.ReadInteger16(r)
|
||||
per.ReadEnumerates(r)
|
||||
size, _ := per.ReadLength(r)
|
||||
// channel ID doesn't match a requested layer
|
||||
found := false
|
||||
channelName := ""
|
||||
for _, channel := range c.channels {
|
||||
if channel.ID == channelId {
|
||||
found = true
|
||||
channelName = channel.Name
|
||||
break
|
||||
}
|
||||
}
|
||||
if !found {
|
||||
if c.messageChannelId != 0 && channelId == c.messageChannelId {
|
||||
data, _ := core.ReadBytes(int(size), r)
|
||||
c.handleAutoDetect(data)
|
||||
return
|
||||
}
|
||||
slog.Error("mcs receive data for an unconnected layer")
|
||||
return
|
||||
}
|
||||
left, err := core.ReadBytes(int(size), r)
|
||||
if err != nil {
|
||||
c.Emit("error", errors.New(fmt.Sprintf("mcs recvData get data error %v", err)))
|
||||
return
|
||||
}
|
||||
c.Emit("sec", channelName, left)
|
||||
}
|
||||
|
||||
func (c *MCSClient) recvChannelJoinConfirm(s []byte) {
|
||||
slog.Debug("recvChannelJoinConfirm", "s", core.Hex(s))
|
||||
r := bytes.NewReader(s)
|
||||
option, err := core.ReadUInt8(r)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
if !readMCSPDUHeader(option, CHANNEL_JOIN_CONFIRM) {
|
||||
// 并行突发窗口内同监听器会看到数据 PDU：静默忽略（由 recvData
|
||||
// 在突发完成后接管处理）。
|
||||
return
|
||||
}
|
||||
|
||||
confirm, _ := per.ReadEnumerates(r)
|
||||
userId, _ := per.ReadInteger16(r)
|
||||
userId += MCS_USERCHANNEL_BASE
|
||||
|
||||
if c.userId != userId {
|
||||
c.Emit("error", errors.New("NODE_RDP_PROTOCOL_T125_MCS_INVALID_USER_ID"))
|
||||
return
|
||||
}
|
||||
|
||||
channelId, _ := per.ReadInteger16(r)
|
||||
if (confirm != 0) && (channelId == uint16(MCS_GLOBAL_CHANNEL_ID) || channelId == c.userId) {
|
||||
c.Emit("error", errors.New("NODE_RDP_PROTOCOL_T125_MCS_SERVER_MUST_CONFIRM_STATIC_CHANNEL"))
|
||||
return
|
||||
}
|
||||
if confirm == 0 {
|
||||
for i := 0; i < int(c.serverNetworkData.ChannelCount); i++ {
|
||||
if channelId == c.serverNetworkData.ChannelIdArray[i] {
|
||||
var t MCSChannelInfo
|
||||
t.ID = channelId
|
||||
t.Name = string(c.clientNetworkData.ChannelDefArray[i].Name[:])
|
||||
c.channels = append(c.channels, t)
|
||||
}
|
||||
}
|
||||
}
|
||||
c.channelsConnected++
|
||||
if c.pendingJoins > 0 {
|
||||
c.pendingJoins--
|
||||
if c.pendingJoins > 0 {
|
||||
return
|
||||
}
|
||||
// 全部 SVC 确认到齐：摘除突发期监听器，交还数据泵。
|
||||
c.transport.Off("data", c.recvChannelJoinConfirm)
|
||||
}
|
||||
c.connectChannels()
|
||||
}
|
||||
|
||||
// Connect-time auto-detection constants (MS-RDPBCGR 2.2.14).
|
||||
const (
|
||||
secAutoDetectReq = uint16(0x1000)
|
||||
secAutoDetectRsp = uint16(0x2000)
|
||||
|
||||
rdpRttRequestConnecttime = uint16(0x1001)
|
||||
rdpBwStartConnecttime = uint16(0x1014)
|
||||
rdpBwPayload = uint16(0x0002)
|
||||
rdpBwStopConnecttime = uint16(0x002B)
|
||||
rdpRttRequest = uint16(0x0001) // continuous RTT request
|
||||
rdpBwStart = uint16(0x0014) // continuous BW start (no response)
|
||||
rdpBwStop = uint16(0x0429) // continuous BW stop
|
||||
|
||||
typeIDAutodetectResponse = uint8(0x01)
|
||||
rdpRttResponseType = uint16(0x0000)
|
||||
rdpBwResultsConnecttime = uint16(0x0003)
|
||||
rdpBwResults = uint16(0x000B) // continuous BW results
|
||||
)
|
||||
|
||||
// handleAutoDetect processes a connect-time auto-detect request from the server
|
||||
// on the message channel. It responds to RTT and BW measurement requests so
|
||||
// that gnome-remote-desktop proceeds to open the audio DVC channels.
|
||||
func (c *MCSClient) handleAutoDetect(data []byte) {
|
||||
r := bytes.NewReader(data)
|
||||
secFlag, _ := core.ReadUint16LE(r)
|
||||
core.ReadUint16LE(r) // secFlagHi
|
||||
|
||||
if secFlag&secAutoDetectReq == 0 {
|
||||
return
|
||||
}
|
||||
|
||||
_, _ = core.ReadUInt8(r) // headerLength
|
||||
core.ReadUInt8(r) // headerTypeId
|
||||
seqNum, _ := core.ReadUint16LE(r)
|
||||
reqType, _ := core.ReadUint16LE(r)
|
||||
|
||||
switch reqType {
|
||||
case rdpRttRequestConnecttime, rdpRttRequest:
|
||||
c.sendAutoDetectResponse(seqNum, rdpRttResponseType, 0)
|
||||
case rdpBwStartConnecttime, rdpBwStart:
|
||||
c.bwStartTime = time.Now()
|
||||
case rdpBwStopConnecttime:
|
||||
elapsed := uint32(time.Since(c.bwStartTime).Milliseconds())
|
||||
if elapsed == 0 {
|
||||
elapsed = 1
|
||||
}
|
||||
c.sendAutoDetectResponse(seqNum, rdpBwResultsConnecttime, elapsed)
|
||||
case rdpBwStop:
|
||||
elapsed := uint32(time.Since(c.bwStartTime).Milliseconds())
|
||||
if elapsed == 0 {
|
||||
elapsed = 1
|
||||
}
|
||||
c.sendAutoDetectResponse(seqNum, rdpBwResults, elapsed)
|
||||
// rdpBwPayload requires no response
|
||||
}
|
||||
}
|
||||
|
||||
// sendAutoDetectResponse sends an auto-detect response on the message channel.
|
||||
// timeDelta is 0 for RTT responses (no BW fields); non-zero for BW responses
|
||||
// (timeDelta in milliseconds since the corresponding BW_START was received).
|
||||
func (c *MCSClient) sendAutoDetectResponse(sequenceNumber uint16, responseType uint16, timeDelta uint32) {
|
||||
includeBW := responseType == rdpBwResultsConnecttime || responseType == rdpBwResults
|
||||
headerLength := uint8(6)
|
||||
if includeBW {
|
||||
headerLength = 14
|
||||
}
|
||||
|
||||
payload := &bytes.Buffer{}
|
||||
core.WriteUInt16LE(secAutoDetectRsp, payload)
|
||||
core.WriteUInt16LE(0, payload)
|
||||
core.WriteUInt8(headerLength, payload)
|
||||
core.WriteUInt8(typeIDAutodetectResponse, payload)
|
||||
core.WriteUInt16LE(sequenceNumber, payload)
|
||||
core.WriteUInt16LE(responseType, payload)
|
||||
if includeBW {
|
||||
core.WriteUInt32LE(timeDelta, payload) // timeDelta in milliseconds
|
||||
core.WriteUInt32LE(0, payload) // byteCount (no BW_PAYLOAD was sent)
|
||||
}
|
||||
|
||||
c.transport.Write(c.Pack(payload.Bytes(), c.messageChannelId))
|
||||
}
|
||||
|
||||
func (c *MCSClient) Pack(data []byte, channelId uint16) []byte {
|
||||
buff := &bytes.Buffer{}
|
||||
writeMCSPDUHeader(c.sendOpCode, 0, buff)
|
||||
per.WriteInteger16(c.userId-MCS_USERCHANNEL_BASE, buff)
|
||||
per.WriteInteger16(channelId, buff)
|
||||
core.WriteUInt8(0x70, buff)
|
||||
per.WriteLength(len(data), buff)
|
||||
core.WriteBytes(data, buff)
|
||||
return buff.Bytes()
|
||||
}
|
||||
|
||||
func (c *MCSClient) Write(data []byte) (n int, err error) {
|
||||
data = c.Pack(data, c.channels[0].ID)
|
||||
return c.transport.Write(data)
|
||||
}
|
||||
|
||||
func (c *MCSClient) SendToChannel(channel string, data []byte) (n int, err error) {
|
||||
channelId := c.channels[0].ID
|
||||
for _, ch := range c.channels {
|
||||
if channel == ch.Name {
|
||||
channelId = ch.ID
|
||||
break
|
||||
}
|
||||
}
|
||||
|
||||
data = c.Pack(data, channelId)
|
||||
return c.transport.Write(data)
|
||||
}
|
||||
@@ -0,0 +1,211 @@
|
||||
package per
|
||||
|
||||
import (
|
||||
"io"
|
||||
"log/slog"
|
||||
|
||||
"git.zeroonesoft.cn/golib/rdplib/core"
|
||||
)
|
||||
|
||||
// zeroPad is a shared zero buffer used by WritePadding to avoid per-call heap
|
||||
// allocations. Writing is done in chunks up to len(zeroPad).
|
||||
var zeroPad [256]byte
|
||||
|
||||
func ReadEnumerates(r io.Reader) (uint8, error) {
|
||||
return core.ReadUInt8(r)
|
||||
}
|
||||
|
||||
func WriteInteger(n int, w io.Writer) {
|
||||
if n <= 0xff {
|
||||
WriteLength(1, w)
|
||||
core.WriteUInt8(uint8(n), w)
|
||||
} else if n <= 0xffff {
|
||||
WriteLength(2, w)
|
||||
core.WriteUInt16BE(uint16(n), w)
|
||||
} else {
|
||||
WriteLength(4, w)
|
||||
core.WriteUInt32BE(uint32(n), w)
|
||||
}
|
||||
}
|
||||
|
||||
func ReadInteger16(r io.Reader) (uint16, error) {
|
||||
return core.ReadUint16BE(r)
|
||||
}
|
||||
|
||||
func WriteInteger16(value uint16, w io.Writer) {
|
||||
core.WriteUInt16BE(value, w)
|
||||
}
|
||||
|
||||
/**
|
||||
* @param choice {integer}
|
||||
* @returns {type.UInt8} choice per encoded
|
||||
*/
|
||||
func WriteChoice(choice uint8, w io.Writer) {
|
||||
core.WriteUInt8(choice, w)
|
||||
}
|
||||
|
||||
/**
|
||||
* @param value {raw} value to convert to per format
|
||||
* @returns type objects per encoding value
|
||||
*/
|
||||
func WriteLength(value int, w io.Writer) {
|
||||
if value > 0x7f {
|
||||
core.WriteUInt16BE(uint16(value|0x8000), w)
|
||||
} else {
|
||||
core.WriteUInt8(uint8(value), w)
|
||||
}
|
||||
}
|
||||
|
||||
func ReadLength(r io.Reader) (uint16, error) {
|
||||
b, err := core.ReadUInt8(r)
|
||||
if err != nil {
|
||||
return 0, nil
|
||||
}
|
||||
var size uint16
|
||||
if b&0x80 > 0 {
|
||||
b = b &^ 0x80
|
||||
size = uint16(b) << 8
|
||||
left, _ := core.ReadUInt8(r)
|
||||
size += uint16(left)
|
||||
} else {
|
||||
size = uint16(b)
|
||||
}
|
||||
return size, nil
|
||||
}
|
||||
|
||||
/**
|
||||
* @param oid {array} oid to write
|
||||
* @returns {type.Component} per encoded object identifier
|
||||
*/
|
||||
func WriteObjectIdentifier(oid []byte, w io.Writer) {
|
||||
core.WriteUInt8(5, w)
|
||||
core.WriteByte((oid[0]<<4)&(oid[1]&0x0f), w)
|
||||
core.WriteByte(oid[2], w)
|
||||
core.WriteByte(oid[3], w)
|
||||
core.WriteByte(oid[4], w)
|
||||
core.WriteByte(oid[5], w)
|
||||
}
|
||||
|
||||
/**
|
||||
* @param selection {integer}
|
||||
* @returns {type.UInt8} per encoded selection
|
||||
*/
|
||||
func WriteSelection(selection uint8, w io.Writer) {
|
||||
core.WriteUInt8(selection, w)
|
||||
}
|
||||
|
||||
func WriteNumericString(s string, minValue int, w io.Writer) {
|
||||
length := len(s)
|
||||
mLength := minValue
|
||||
if length >= minValue {
|
||||
mLength = length - minValue
|
||||
}
|
||||
WriteLength(mLength, w)
|
||||
var buf [1]byte
|
||||
for i := 0; i < length; i += 2 {
|
||||
c1 := int(s[i])
|
||||
c2 := 0x30
|
||||
if i+1 < length {
|
||||
c2 = int(s[i+1])
|
||||
}
|
||||
c1 = (c1 - 0x30) % 10
|
||||
c2 = (c2 - 0x30) % 10
|
||||
buf[0] = uint8((c1 << 4) | c2)
|
||||
w.Write(buf[:])
|
||||
}
|
||||
}
|
||||
|
||||
func WritePadding(length int, w io.Writer) {
|
||||
for length > 0 {
|
||||
n := length
|
||||
if n > len(zeroPad) {
|
||||
n = len(zeroPad)
|
||||
}
|
||||
w.Write(zeroPad[:n])
|
||||
length -= n
|
||||
}
|
||||
}
|
||||
|
||||
func WriteNumberOfSet(n int, w io.Writer) {
|
||||
core.WriteUInt8(uint8(n), w)
|
||||
}
|
||||
|
||||
/**
|
||||
* @param oStr {String}
|
||||
* @param minValue {integer} default 0
|
||||
* @returns {type.Component} per encoded octet stream
|
||||
*/
|
||||
func WriteOctetStream(oStr string, minValue int, w io.Writer) {
|
||||
length := len(oStr)
|
||||
mlength := minValue
|
||||
|
||||
if length-minValue >= 0 {
|
||||
mlength = length - minValue
|
||||
}
|
||||
WriteLength(mlength, w)
|
||||
io.WriteString(w, oStr)
|
||||
}
|
||||
|
||||
func ReadChoice(r io.Reader) uint8 {
|
||||
choice, _ := core.ReadUInt8(r)
|
||||
return choice
|
||||
}
|
||||
func ReadNumberOfSet(r io.Reader) uint8 {
|
||||
choice, _ := core.ReadUInt8(r)
|
||||
return choice
|
||||
}
|
||||
func ReadInteger(r io.Reader) uint32 {
|
||||
size, _ := ReadLength(r)
|
||||
switch size {
|
||||
case 1:
|
||||
ret, _ := core.ReadUInt8(r)
|
||||
return uint32(ret)
|
||||
case 2:
|
||||
ret, _ := core.ReadUint16BE(r)
|
||||
return uint32(ret)
|
||||
case 4:
|
||||
ret, _ := core.ReadUInt32BE(r)
|
||||
return ret
|
||||
default:
|
||||
slog.Debug("ReadInteger")
|
||||
}
|
||||
return 0
|
||||
}
|
||||
|
||||
func ReadObjectIdentifier(r io.Reader, oid []byte) bool {
|
||||
size, _ := ReadLength(r)
|
||||
if size != 5 {
|
||||
return false
|
||||
}
|
||||
|
||||
a_oid := []byte{0, 0, 0, 0, 0, 0}
|
||||
t12, _ := core.ReadByte(r)
|
||||
a_oid[0] = t12 >> 4
|
||||
a_oid[1] = t12 & 0x0f
|
||||
a_oid[2], _ = core.ReadByte(r)
|
||||
a_oid[3], _ = core.ReadByte(r)
|
||||
a_oid[4], _ = core.ReadByte(r)
|
||||
a_oid[5], _ = core.ReadByte(r)
|
||||
|
||||
for i := range oid {
|
||||
if oid[i] != a_oid[i] {
|
||||
return false
|
||||
}
|
||||
}
|
||||
return true
|
||||
}
|
||||
func ReadOctetStream(r io.Reader, s string, min int) bool {
|
||||
ln, _ := ReadLength(r)
|
||||
size := int(ln) + min
|
||||
if size != len(s) {
|
||||
return false
|
||||
}
|
||||
for i := range size {
|
||||
b, _ := core.ReadByte(r)
|
||||
if b != s[i] {
|
||||
return false
|
||||
}
|
||||
}
|
||||
|
||||
return true
|
||||
}
|
||||
Reference in New Issue
Block a user