Add vendor (steam)

1 files changed, 116 insertions, 0 deletions

diff --git a/vendor/github.com/Philipp15b/go-steam/protocol/packet.go b/vendor/github.com/Philipp15b/go-steam/protocol/packet.go
new file mode 100644
index 00000000..d6b2e425
--- /dev/null
+++ b/vendor/github.com/Philipp15b/go-steam/protocol/packet.go
@@ -0,0 +1,116 @@
+package protocol
+
+import (
+	"bytes"
+	"github.com/golang/protobuf/proto"
+	"encoding/binary"
+	"fmt"
+	. "github.com/Philipp15b/go-steam/protocol/steamlang"
+)
+
+// TODO: Headers are always deserialized twice.
+
+// Represents an incoming, partially unread message.
+type Packet struct {
+	EMsg        EMsg
+	IsProto     bool
+	TargetJobId JobId
+	SourceJobId JobId
+	Data        []byte
+}
+
+func NewPacket(data []byte) (*Packet, error) {
+	var rawEMsg uint32
+	err := binary.Read(bytes.NewReader(data), binary.LittleEndian, &rawEMsg)
+	if err != nil {
+		return nil, err
+	}
+	eMsg := NewEMsg(rawEMsg)
+	buf := bytes.NewReader(data)
+	if eMsg == EMsg_ChannelEncryptRequest || eMsg == EMsg_ChannelEncryptResult {
+		header := NewMsgHdr()
+		header.Msg = eMsg
+		err = header.Deserialize(buf)
+		if err != nil {
+			return nil, err
+		}
+		return &Packet{
+			EMsg:        eMsg,
+			IsProto:     false,
+			TargetJobId: JobId(header.TargetJobID),
+			SourceJobId: JobId(header.SourceJobID),
+			Data:        data,
+		}, nil
+	} else if IsProto(rawEMsg) {
+		header := NewMsgHdrProtoBuf()
+		header.Msg = eMsg
+		err = header.Deserialize(buf)
+		if err != nil {
+			return nil, err
+		}
+		return &Packet{
+			EMsg:        eMsg,
+			IsProto:     true,
+			TargetJobId: JobId(header.Proto.GetJobidTarget()),
+			SourceJobId: JobId(header.Proto.GetJobidSource()),
+			Data:        data,
+		}, nil
+	} else {
+		header := NewExtendedClientMsgHdr()
+		header.Msg = eMsg
+		err = header.Deserialize(buf)
+		if err != nil {
+			return nil, err
+		}
+		return &Packet{
+			EMsg:        eMsg,
+			IsProto:     false,
+			TargetJobId: JobId(header.TargetJobID),
+			SourceJobId: JobId(header.SourceJobID),
+			Data:        data,
+		}, nil
+	}
+}
+
+func (p *Packet) String() string {
+	return fmt.Sprintf("Packet{EMsg = %v, Proto = %v, Len = %v, TargetJobId = %v, SourceJobId = %v}", p.EMsg, p.IsProto, len(p.Data), p.TargetJobId, p.SourceJobId)
+}
+
+func (p *Packet) ReadProtoMsg(body proto.Message) *ClientMsgProtobuf {
+	header := NewMsgHdrProtoBuf()
+	buf := bytes.NewBuffer(p.Data)
+	header.Deserialize(buf)
+	proto.Unmarshal(buf.Bytes(), body)
+	return &ClientMsgProtobuf{ // protobuf messages have no payload
+		Header: header,
+		Body:   body,
+	}
+}
+
+func (p *Packet) ReadClientMsg(body MessageBody) *ClientMsg {
+	header := NewExtendedClientMsgHdr()
+	buf := bytes.NewReader(p.Data)
+	header.Deserialize(buf)
+	body.Deserialize(buf)
+	payload := make([]byte, buf.Len())
+	buf.Read(payload)
+	return &ClientMsg{
+		Header:  header,
+		Body:    body,
+		Payload: payload,
+	}
+}
+
+func (p *Packet) ReadMsg(body MessageBody) *Msg {
+	header := NewMsgHdr()
+	buf := bytes.NewReader(p.Data)
+	header.Deserialize(buf)
+	body.Deserialize(buf)
+	payload := make([]byte, buf.Len())
+	buf.Read(payload)
+	return &Msg{
+		Header:  header,
+		Body:    body,
+		Payload: payload,
+	}
+}