disp_common.c

 
#include <freerdp/config.h>
 
#include <winpr/crt.h>
#include <winpr/stream.h>
#include <freerdp/channels/log.h>
 
#define TAG CHANNELS_TAG("disp.common")
 
#include "disp_common.h"
 
UINT disp_read_header(wStream* s, DISPLAY_CONTROL_HEADER* header, size_t* packetLen)
{
  if (packetLen)
    *packetLen = 0;
 
  if (!Stream_CheckAndLogRequiredLength(TAG, s, 8))
    return ERROR_INVALID_DATA;
 
  Stream_Read_UINT32(s, header->type);
  Stream_Read_UINT32(s, header->length);
  if (header->length < 8)
  {
    WLog_ERR(TAG, "Invalid header length %" PRIu32 ", require at least 8", header->length);
    return ERROR_INVALID_DATA;
  }
  if (!Stream_CheckAndLogRequiredLength(TAG, s, header->length - 8))
    return ERROR_INVALID_DATA;
 
  if (packetLen)
    *packetLen = header->length - 8;
 
  return CHANNEL_RC_OK;
}
 
UINT disp_write_header(wStream* s, const DISPLAY_CONTROL_HEADER* header)
{
  Stream_Write_UINT32(s, header->type);
  Stream_Write_UINT32(s, header->length);
  return CHANNEL_RC_OK;
}