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Extended the spice property. #21

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Extended the spice property. #21

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41 changes: 35 additions & 6 deletions pkg/classifier/spice.go
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Original file line number Diff line number Diff line change
Expand Up @@ -14,6 +14,7 @@ const (
SPICE_MAGIC = "REDQ"
MAJOR_VERSION_INDEX = 4
MINOR_VERSION_INDEX = 8
SESSION_ID_INDEX = 16
CHANNEL_TYPE_INDEX = 20
CHANNEL_MAIN = 1
CHANNEL_DISPLAY = 2
Expand Down Expand Up @@ -41,12 +42,23 @@ const (
SERVER_NAME_LENGTH_LENGTH = 4
)

const (
DISPLAY_CHANNELS_HINT_LENGTH = 4
SUPPORTED_MOUSER_MODES_LENGTH = 4
CURRENT_MOUSE_MODE_LENGTH = 4
)

type mainInitMessage struct {
CurrentMouseMode string `json:"currentMouseMode,omitempty"`
}

type spiceProperties struct {
Version string `json:"version"`
SessionId string `json:"sessionId"`
ChannelType string `json:"channelType"`
ServerName string `json:"serverName,omitempty"`
ServerUUID string `json:"serverUUID,omitempty"`
Version string `json:"version"`
SessionId string `json:"sessionId"`
ChannelType string `json:"channelType"`
ServerName string `json:"serverName,omitempty"`
ServerUUID string `json:"serverUUID,omitempty"`
ExtraProperties any `json:"extraProperties,omitempty"`
}

type spiceDiscriminator struct {
Expand Down Expand Up @@ -105,6 +117,7 @@ func (s *spiceDiscriminator) analyzeServerHeader(logger log.Logger, server *[]by
}
sessionIndex := offset - int(messageSize)
s.properties.SessionId = fmt.Sprintf("%x", (*server)[sessionIndex:sessionIndex+SESSION_ID_LENGTH])
s.properties.ExtraProperties = analyzeMainInitMessage(server, sessionIndex+SESSION_ID_LENGTH)
delete(messageTypeMap, "init")
case MESSAGE_TYPE_SERVER_NAME:
offset = offset + MESSAGE_SIZE_LENGTH
Expand Down Expand Up @@ -163,7 +176,7 @@ func (s *spiceDiscriminator) AnalyzeHeader(ctx context.Context, client *[]byte,
if s.properties.ChannelType == "" {
s.properties = spiceProperties{
Version: fmt.Sprintf("%x.%x", (*client)[MAJOR_VERSION_INDEX], (*client)[MINOR_VERSION_INDEX]),
SessionId: fmt.Sprintf("%x", (*client)[16:20]),
SessionId: fmt.Sprintf("%x", (*client)[SESSION_ID_INDEX:SESSION_ID_INDEX+SESSION_ID_LENGTH]),
}
// If the properties already instantiated, and the channel type is
// main, we to analy the server header data directly.
Expand Down Expand Up @@ -208,3 +221,19 @@ func (s *spiceDiscriminator) AnalyzeHeader(ctx context.Context, client *[]byte,
func (s *spiceDiscriminator) GetProperties(ctx context.Context) any {
return s.properties
}

func analyzeMainInitMessage(server *[]byte, offset int) *mainInitMessage {
cmmIndex := offset + DISPLAY_CHANNELS_HINT_LENGTH + SUPPORTED_MOUSER_MODES_LENGTH

currentMouseMode := "UNKNOW"
currentMouseModeMark := binary.LittleEndian.Uint32((*server)[cmmIndex : cmmIndex+CURRENT_MOUSE_MODE_LENGTH])
if currentMouseModeMark == 2 {
currentMouseMode = "CLIENT"
} else if currentMouseModeMark == 1 {
currentMouseMode = "SERVER"
}

return &mainInitMessage{
CurrentMouseMode: currentMouseMode,
}
}