xrdp-proprietary/libxrdp/xrdp_orders.c

/**
 * xrdp: A Remote Desktop Protocol server.
 *
 * Copyright (C) Jay Sorg 2004-2012
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * orders
 */

#include "libxrdp.h"

#if defined(XRDP_FREERDP1)
#include <freerdp/codec/rfx.h>
#endif

#define LLOG_LEVEL 2
#define LLOGLN(_log_level, _params) \
    { \
        if (_log_level < LLOG_LEVEL) \
        { \
            g_write("xrdp_orders.c [%10.10u]: ", g_time3()); \
            g_writeln _params ; \
        } \
    }

/*****************************************************************************/
struct xrdp_orders *APP_CC
xrdp_orders_create(struct xrdp_session *session, struct xrdp_rdp *rdp_layer)
{
    struct xrdp_orders *self;

    self = (struct xrdp_orders *)g_malloc(sizeof(struct xrdp_orders), 1);
    self->session = session;
    self->rdp_layer = rdp_layer;
    make_stream(self->out_s);
    init_stream(self->out_s, 16384);
    self->orders_state.clip_right = 1; /* silly rdp right clip */
    self->orders_state.clip_bottom = 1; /* silly rdp bottom clip */
    return self;
}

/*****************************************************************************/
void APP_CC
xrdp_orders_delete(struct xrdp_orders *self)
{
    if (self == 0)
    {
        return;
    }

    free_stream(self->out_s);
    g_free(self->orders_state.text_data);
    g_free(self);
}

/*****************************************************************************/
/* set all values to zero */
/* returns error */
int APP_CC
xrdp_orders_reset(struct xrdp_orders *self)
{
    if (xrdp_orders_force_send(self) != 0)
    {
        return 1;
    }

    g_free(self->orders_state.text_data);
    g_memset(&(self->orders_state), 0, sizeof(self->orders_state));
    self->order_count_ptr = 0;
    self->order_count = 0;
    self->order_level = 0;
    self->orders_state.clip_right = 1; /* silly rdp right clip */
    self->orders_state.clip_bottom = 1; /* silly rdp bottom clip */
    return 0;
}

/*****************************************************************************/
/* returns error */
int APP_CC
xrdp_orders_init(struct xrdp_orders *self)
{
    self->order_level++;

    if (self->order_level == 1)
    {
        self->order_count = 0;

        /* is this big enough */
        if (xrdp_rdp_init_data(self->rdp_layer, self->out_s) != 0)
        {
            return 1;
        }

        out_uint16_le(self->out_s, RDP_UPDATE_ORDERS);
        out_uint8s(self->out_s, 2); /* pad */
        self->order_count_ptr = self->out_s->p;
        out_uint8s(self->out_s, 2); /* number of orders, set later */
        out_uint8s(self->out_s, 2); /* pad */
    }

    return 0;
}

/*****************************************************************************/
/* returns error */
int APP_CC
xrdp_orders_send(struct xrdp_orders *self)
{
    int rv;

    rv = 0;

    if (self->order_level > 0)
    {
        self->order_level--;

        if ((self->order_level == 0) && (self->order_count > 0))
        {
            s_mark_end(self->out_s);
            DEBUG(("xrdp_orders_send sending %d orders", self->order_count));
            self->order_count_ptr[0] = self->order_count;
            self->order_count_ptr[1] = self->order_count >> 8;
            self->order_count = 0;

            if (xrdp_rdp_send_data(self->rdp_layer, self->out_s,
                                   RDP_DATA_PDU_UPDATE) != 0)
            {
                rv = 1;
            }
        }
    }

    return rv;
}

/*****************************************************************************/
/* returns error */
int APP_CC
xrdp_orders_force_send(struct xrdp_orders *self)
{
    if (self == 0)
    {
        return 1;
    }

    if ((self->order_level > 0) && (self->order_count > 0))
    {
        s_mark_end(self->out_s);
        DEBUG(("xrdp_orders_force_send sending %d orders", self->order_count));
        self->order_count_ptr[0] = self->order_count;
        self->order_count_ptr[1] = self->order_count >> 8;

        if (xrdp_rdp_send_data(self->rdp_layer, self->out_s,
                               RDP_DATA_PDU_UPDATE) != 0)
        {
            return 1;
        }
    }

    self->order_count = 0;
    self->order_level = 0;
    return 0;
}

/*****************************************************************************/
/* check if the current order will fit in packet size of 16384, if not */
/* send what we got and init a new one */
/* returns error */
int APP_CC
xrdp_orders_check(struct xrdp_orders *self, int max_size)
{
    int size;
    int max_packet_size;

    if (self->rdp_layer->client_info.bpp == 8)
    {
        max_packet_size = 8000;
    }
    else
    {
        max_packet_size = 16000;
    }

    if (self->order_level < 1)
    {
        if (max_size > max_packet_size)
        {
            return 1;
        }
        else
        {
            return 0;
        }
    }

    size = (int)(self->out_s->p - self->order_count_ptr);

    if ((size < 0) || (size > max_packet_size))
    {
        return 1;
    }

    if ((size + max_size + 100) > max_packet_size)
    {
        xrdp_orders_force_send(self);
        xrdp_orders_init(self);
    }

    return 0;
}

/*****************************************************************************/
/* check if rect is the same as the last one sent */
/* returns boolean */
static int APP_CC
xrdp_orders_last_bounds(struct xrdp_orders *self, struct xrdp_rect *rect)
{
    if (rect == 0)
    {
        return 0;
    }

    if ((rect->left == self->orders_state.clip_left) &&
            (rect->top == self->orders_state.clip_top) &&
            (rect->right == self->orders_state.clip_right) &&
            (rect->bottom == self->orders_state.clip_bottom))
    {
        return 1;
    }

    return 0;
}

/*****************************************************************************/
/* check if all coords are withing 256 bytes */
/* returns boolean */
static int APP_CC
xrdp_orders_send_delta(struct xrdp_orders *self, int *vals, int count)
{
    int i;

    for (i = 0; i < count; i += 2)
    {
        if (g_abs(vals[i] - vals[i + 1]) >= 128)
        {
            return 0;
        }
    }

    return 1;
}

/*****************************************************************************/
/* returns error */
static int APP_CC
xrdp_orders_out_bounds(struct xrdp_orders *self, struct xrdp_rect *rect)
{
    char *bounds_flags_ptr;
    int bounds_flags;

    bounds_flags = 0;
    bounds_flags_ptr = self->out_s->p;
    out_uint8s(self->out_s, 1);

    /* left */
    if (rect->left == self->orders_state.clip_left)
    {
    }
    else if (g_abs(rect->left - self->orders_state.clip_left) < 128)
    {
        bounds_flags |= 0x10;
    }
    else
    {
        bounds_flags |= 0x01;
    }

    /* top */
    if (rect->top == self->orders_state.clip_top)
    {
    }
    else if (g_abs(rect->top - self->orders_state.clip_top) < 128)
    {
        bounds_flags |= 0x20;
    }
    else
    {
        bounds_flags |= 0x02;
    }

    /* right */
    if (rect->right == self->orders_state.clip_right)
    {
    }
    else if (g_abs(rect->right - self->orders_state.clip_right) < 128)
    {
        bounds_flags |= 0x40;
    }
    else
    {
        bounds_flags |= 0x04;
    }

    /* bottom */
    if (rect->bottom == self->orders_state.clip_bottom)
    {
    }
    else if (g_abs(rect->bottom - self->orders_state.clip_bottom) < 128)
    {
        bounds_flags |= 0x80;
    }
    else
    {
        bounds_flags |= 0x08;
    }

    /* left */
    if (bounds_flags & 0x01)
    {
        out_uint16_le(self->out_s, rect->left);
    }
    else if (bounds_flags & 0x10)
    {
        out_uint8(self->out_s, rect->left - self->orders_state.clip_left);
    }

    self->orders_state.clip_left = rect->left;

    /* top */
    if (bounds_flags & 0x02)
    {
        out_uint16_le(self->out_s, rect->top);
    }
    else if (bounds_flags & 0x20)
    {
        out_uint8(self->out_s, rect->top - self->orders_state.clip_top);
    }

    self->orders_state.clip_top = rect->top;

    /* right */
    if (bounds_flags & 0x04)
    {
        out_uint16_le(self->out_s, rect->right - 1); /* silly rdp right clip */
    }
    else if (bounds_flags & 0x40)
    {
        out_uint8(self->out_s, rect->right - self->orders_state.clip_right);
    }

    self->orders_state.clip_right = rect->right;

    /* bottom */
    if (bounds_flags & 0x08)
    {
        out_uint16_le(self->out_s, rect->bottom - 1); /* silly rdp bottom clip */
    }
    else if (bounds_flags & 0x80)
    {
        out_uint8(self->out_s, rect->bottom - self->orders_state.clip_bottom);
    }

    self->orders_state.clip_bottom = rect->bottom;
    /* set flags */
    *bounds_flags_ptr = bounds_flags;
    return 0;
}

/*****************************************************************************/
/* returns error */
static int APP_CC
xrdp_order_pack_small_or_tiny(struct xrdp_orders *self,
                              char *order_flags_ptr, int orders_flags,
                              char *present_ptr, int present,
                              int present_size)
{
    int move_up_count = 0;
    int index = 0;
    int size = 0;
    int keep_looking = 1;

    move_up_count = 0;
    keep_looking = 1;

    for (index = present_size - 1; index >= 0; index--)
    {
        if (keep_looking)
        {
            if (((present >> (index * 8)) & 0xff) == 0)
            {
                move_up_count++;
            }
            else
            {
                keep_looking = 0;
            }
        }

        present_ptr[index] = present >> (index * 8);
    }

    if (move_up_count > 0)
    {
        /* move_up_count should be 0, 1, 2, or 3
           shifting it 6 will make it RDP_ORDER_TINY(0x80) or
           RDP_ORDER_SMALL(0x40) or both */
        orders_flags |= move_up_count << 6;
        size = (int)(self->out_s->p - present_ptr);
        size -= present_size;

        for (index = 0; index < size; index++)
        {
            present_ptr[index + (present_size - move_up_count)] =
                present_ptr[index + present_size];
        }

        self->out_s->p -= move_up_count;
    }

    order_flags_ptr[0] = orders_flags;
    return 0;
}

/*****************************************************************************/
/* returns error */
/* send a solid rect to client */
/* max size 23 */
int APP_CC
xrdp_orders_rect(struct xrdp_orders *self, int x, int y, int cx, int cy,
                 int color, struct xrdp_rect *rect)
{
    int order_flags;
    int vals[8];
    int present;
    char *present_ptr;
    char *order_flags_ptr;

    xrdp_orders_check(self, 23);
    self->order_count++;
    order_flags = RDP_ORDER_STANDARD;

    if (self->orders_state.last_order != RDP_ORDER_RECT)
    {
        order_flags |= RDP_ORDER_CHANGE;
    }

    self->orders_state.last_order = RDP_ORDER_RECT;

    if (rect != 0)
    {
        /* if clip is present, still check if its needed */
        if (x < rect->left || y < rect->top ||
                x + cx > rect->right || y + cy > rect->bottom)
        {
            order_flags |= RDP_ORDER_BOUNDS;

            if (xrdp_orders_last_bounds(self, rect))
            {
                order_flags |= RDP_ORDER_LASTBOUNDS;
            }
        }
    }

    vals[0] = x;
    vals[1] = self->orders_state.rect_x;
    vals[2] = y;
    vals[3] = self->orders_state.rect_y;
    vals[4] = cx;
    vals[5] = self->orders_state.rect_cx;
    vals[6] = cy;
    vals[7] = self->orders_state.rect_cy;

    if (xrdp_orders_send_delta(self, vals, 8))
    {
        order_flags |= RDP_ORDER_DELTA;
    }

    /* order_flags, set later, 1 byte */
    order_flags_ptr = self->out_s->p;
    out_uint8s(self->out_s, 1);

    if (order_flags & RDP_ORDER_CHANGE)
    {
        out_uint8(self->out_s, self->orders_state.last_order);
    }

    present = 0;
    /* present, set later, 1 byte */
    present_ptr = self->out_s->p;
    out_uint8s(self->out_s, 1);

    if ((order_flags & RDP_ORDER_BOUNDS) &&
            !(order_flags & RDP_ORDER_LASTBOUNDS))
    {
        xrdp_orders_out_bounds(self, rect);
    }

    if (x != self->orders_state.rect_x)
    {
        present |= 0x01;

        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, x - self->orders_state.rect_x);
        }
        else
        {
            out_uint16_le(self->out_s, x);
        }

        self->orders_state.rect_x = x;
    }

    if (y != self->orders_state.rect_y)
    {
        present |= 0x02;

        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, y - self->orders_state.rect_y);
        }
        else
        {
            out_uint16_le(self->out_s, y);
        }

        self->orders_state.rect_y = y;
    }

    if (cx != self->orders_state.rect_cx)
    {
        present |= 0x04;

        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, cx - self->orders_state.rect_cx);
        }
        else
        {
            out_uint16_le(self->out_s, cx);
        }

        self->orders_state.rect_cx = cx;
    }

    if (cy != self->orders_state.rect_cy)
    {
        present |= 0x08;

        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, cy - self->orders_state.rect_cy);
        }
        else
        {
            out_uint16_le(self->out_s, cy);
        }

        self->orders_state.rect_cy = cy;
    }

    if ((color & 0xff) != (self->orders_state.rect_color & 0xff))
    {
        present |= 0x10;
        self->orders_state.rect_color =
            (self->orders_state.rect_color & 0xffff00) | (color & 0xff);
        out_uint8(self->out_s, color);
    }

    if ((color & 0xff00) != (self->orders_state.rect_color & 0xff00))
    {
        present |= 0x20;
        self->orders_state.rect_color =
            (self->orders_state.rect_color & 0xff00ff) | (color & 0xff00);
        out_uint8(self->out_s, color >> 8);
    }

    if ((color & 0xff0000) != (self->orders_state.rect_color & 0xff0000))
    {
        present |= 0x40;
        self->orders_state.rect_color =
            (self->orders_state.rect_color & 0x00ffff) | (color & 0xff0000);
        out_uint8(self->out_s, color >> 16);
    }

    xrdp_order_pack_small_or_tiny(self, order_flags_ptr, order_flags,
                                  present_ptr, present, 1);
    return 0;
}

/*****************************************************************************/
/* returns error */
/* send a screen blt order */
/* max size 25 */
int APP_CC
xrdp_orders_screen_blt(struct xrdp_orders *self, int x, int y,
                       int cx, int cy, int srcx, int srcy,
                       int rop, struct xrdp_rect *rect)
{
    int order_flags = 0;
    int vals[12] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
    int present = 0;
    char *present_ptr = (char *)NULL;
    char *order_flags_ptr = (char *)NULL;

    xrdp_orders_check(self, 25);
    self->order_count++;
    order_flags = RDP_ORDER_STANDARD;

    if (self->orders_state.last_order != RDP_ORDER_SCREENBLT)
    {
        order_flags |= RDP_ORDER_CHANGE;
    }

    self->orders_state.last_order = RDP_ORDER_SCREENBLT;

    if (rect != 0)
    {
        /* if clip is present, still check if its needed */
        if (x < rect->left || y < rect->top ||
                x + cx > rect->right || y + cy > rect->bottom)
        {
            order_flags |= RDP_ORDER_BOUNDS;

            if (xrdp_orders_last_bounds(self, rect))
            {
                order_flags |= RDP_ORDER_LASTBOUNDS;
            }
        }
    }

    vals[0] = x;
    vals[1] = self->orders_state.scr_blt_x;
    vals[2] = y;
    vals[3] = self->orders_state.scr_blt_y;
    vals[4] = cx;
    vals[5] = self->orders_state.scr_blt_cx;
    vals[6] = cy;
    vals[7] = self->orders_state.scr_blt_cy;
    vals[8] = srcx;
    vals[9] = self->orders_state.scr_blt_srcx;
    vals[10] = srcy;
    vals[11] = self->orders_state.scr_blt_srcy;

    if (xrdp_orders_send_delta(self, vals, 12))
    {
        order_flags |= RDP_ORDER_DELTA;
    }

    /* order_flags, set later, 1 byte */
    order_flags_ptr = self->out_s->p;
    out_uint8s(self->out_s, 1);

    if (order_flags & RDP_ORDER_CHANGE)
    {
        out_uint8(self->out_s, self->orders_state.last_order);
    }

    present = 0;
    /* present, set later, 1 byte */
    present_ptr = self->out_s->p;
    out_uint8s(self->out_s, 1);

    if ((order_flags & RDP_ORDER_BOUNDS) &&
            !(order_flags & RDP_ORDER_LASTBOUNDS))
    {
        xrdp_orders_out_bounds(self, rect);
    }

    if (x != self->orders_state.scr_blt_x)
    {
        present |= 0x01;

        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, x - self->orders_state.scr_blt_x);
        }
        else
        {
            out_uint16_le(self->out_s, x);
        }

        self->orders_state.scr_blt_x = x;
    }

    if (y != self->orders_state.scr_blt_y)
    {
        present |= 0x02;

        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, y - self->orders_state.scr_blt_y);
        }
        else
        {
            out_uint16_le(self->out_s, y);
        }

        self->orders_state.scr_blt_y = y;
    }

    if (cx != self->orders_state.scr_blt_cx)
    {
        present |= 0x04;

        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, cx - self->orders_state.scr_blt_cx);
        }
        else
        {
            out_uint16_le(self->out_s, cx);
        }

        self->orders_state.scr_blt_cx = cx;
    }

    if (cy != self->orders_state.scr_blt_cy)
    {
        present |= 0x08;

        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, cy - self->orders_state.scr_blt_cy);
        }
        else
        {
            out_uint16_le(self->out_s, cy);
        }

        self->orders_state.scr_blt_cy = cy;
    }

    if (rop != self->orders_state.scr_blt_rop)
    {
        present |= 0x10;
        out_uint8(self->out_s, rop);
        self->orders_state.scr_blt_rop = rop;
    }

    if (srcx != self->orders_state.scr_blt_srcx)
    {
        present |= 0x20;

        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, srcx - self->orders_state.scr_blt_srcx);
        }
        else
        {
            out_uint16_le(self->out_s, srcx);
        }

        self->orders_state.scr_blt_srcx = srcx;
    }

    if (srcy != self->orders_state.scr_blt_srcy)
    {
        present |= 0x40;

        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, srcy - self->orders_state.scr_blt_srcy);
        }
        else
        {
            out_uint16_le(self->out_s, srcy);
        }

        self->orders_state.scr_blt_srcy = srcy;
    }

    xrdp_order_pack_small_or_tiny(self, order_flags_ptr, order_flags,
                                  present_ptr, present, 1);
    return 0;
}

/*****************************************************************************/
/* returns error */
/* send a pat blt order */
/* max size 39 */
int APP_CC
xrdp_orders_pat_blt(struct xrdp_orders *self, int x, int y,
                    int cx, int cy, int rop, int bg_color,
                    int fg_color, struct xrdp_brush *brush,
                    struct xrdp_rect *rect)
{
    int order_flags;
    int present;
    int vals[8];
    char *present_ptr;
    char *order_flags_ptr;
    struct xrdp_brush blank_brush;

    xrdp_orders_check(self, 39);
    self->order_count++;
    order_flags = RDP_ORDER_STANDARD;

    if (self->orders_state.last_order != RDP_ORDER_PATBLT)
    {
        order_flags |= RDP_ORDER_CHANGE;
    }

    self->orders_state.last_order = RDP_ORDER_PATBLT;

    if (rect != 0)
    {
        /* if clip is present, still check if its needed */
        if (x < rect->left || y < rect->top ||
                x + cx > rect->right || y + cy > rect->bottom)
        {
            order_flags |= RDP_ORDER_BOUNDS;

            if (xrdp_orders_last_bounds(self, rect))
            {
                order_flags |= RDP_ORDER_LASTBOUNDS;
            }
        }
    }

    vals[0] = x;
    vals[1] = self->orders_state.pat_blt_x;
    vals[2] = y;
    vals[3] = self->orders_state.pat_blt_y;
    vals[4] = cx;
    vals[5] = self->orders_state.pat_blt_cx;
    vals[6] = cy;
    vals[7] = self->orders_state.pat_blt_cy;

    if (xrdp_orders_send_delta(self, vals, 8))
    {
        order_flags |= RDP_ORDER_DELTA;
    }

    /* order_flags, set later, 1 byte */
    order_flags_ptr = self->out_s->p;
    out_uint8s(self->out_s, 1);

    if (order_flags & RDP_ORDER_CHANGE)
    {
        out_uint8(self->out_s, self->orders_state.last_order);
    }

    present = 0;
    /* present, set later, 2 bytes */
    present_ptr = self->out_s->p;
    out_uint8s(self->out_s, 2);

    if ((order_flags & RDP_ORDER_BOUNDS) &&
            !(order_flags & RDP_ORDER_LASTBOUNDS))
    {
        xrdp_orders_out_bounds(self, rect);
    }

    if (x != self->orders_state.pat_blt_x)
    {
        present |= 0x0001;

        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, x - self->orders_state.pat_blt_x);
        }
        else
        {
            out_uint16_le(self->out_s, x);
        }

        self->orders_state.pat_blt_x = x;
    }

    if (y != self->orders_state.pat_blt_y)
    {
        present |= 0x0002;

        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, y - self->orders_state.pat_blt_y);
        }
        else
        {
            out_uint16_le(self->out_s, y);
        }

        self->orders_state.pat_blt_y = y;
    }

    if (cx != self->orders_state.pat_blt_cx)
    {
        present |= 0x0004;

        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, cx - self->orders_state.pat_blt_cx);
        }
        else
        {
            out_uint16_le(self->out_s, cx);
        }

        self->orders_state.pat_blt_cx = cx;
    }

    if (cy != self->orders_state.pat_blt_cy)
    {
        present |= 0x0008;

        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, cy - self->orders_state.pat_blt_cy);
        }
        else
        {
            out_uint16_le(self->out_s, cy);
        }

        self->orders_state.pat_blt_cy = cy;
    }

    if (rop != self->orders_state.pat_blt_rop)
    {
        present |= 0x0010;
        /* PATCOPY PATPAINT PATINVERT DSTINVERT BLACKNESS WHITENESS */
        out_uint8(self->out_s, rop);
        self->orders_state.pat_blt_rop = rop;
    }

    if (bg_color != self->orders_state.pat_blt_bg_color)
    {
        present |= 0x0020;
        out_uint8(self->out_s, bg_color);
        out_uint8(self->out_s, bg_color >> 8);
        out_uint8(self->out_s, bg_color >> 16);
        self->orders_state.pat_blt_bg_color = bg_color;
    }

    if (fg_color != self->orders_state.pat_blt_fg_color)
    {
        present |= 0x0040;
        out_uint8(self->out_s, fg_color);
        out_uint8(self->out_s, fg_color >> 8);
        out_uint8(self->out_s, fg_color >> 16);
        self->orders_state.pat_blt_fg_color = fg_color;
    }

    if (brush == 0) /* if nil use blank one */
    {
        /* todo can we just set style to zero */
        g_memset(&blank_brush, 0, sizeof(struct xrdp_brush));
        brush = &blank_brush;
    }

    if (brush->x_orgin != self->orders_state.pat_blt_brush.x_orgin)
    {
        present |= 0x0080;
        out_uint8(self->out_s, brush->x_orgin);
        self->orders_state.pat_blt_brush.x_orgin = brush->x_orgin;
    }

    if (brush->y_orgin != self->orders_state.pat_blt_brush.y_orgin)
    {
        present |= 0x0100;
        out_uint8(self->out_s, brush->y_orgin);
        self->orders_state.pat_blt_brush.y_orgin = brush->y_orgin;
    }

    if (brush->style != self->orders_state.pat_blt_brush.style)
    {
        present |= 0x0200;
        out_uint8(self->out_s, brush->style);
        self->orders_state.pat_blt_brush.style = brush->style;
    }

    if (brush->pattern[0] != self->orders_state.pat_blt_brush.pattern[0])
    {
        present |= 0x0400;
        out_uint8(self->out_s, brush->pattern[0]);
        self->orders_state.pat_blt_brush.pattern[0] = brush->pattern[0];
    }

    if (g_memcmp(brush->pattern + 1,
                 self->orders_state.pat_blt_brush.pattern + 1, 7) != 0)
    {
        present |= 0x0800;
        out_uint8a(self->out_s, brush->pattern + 1, 7);
        g_memcpy(self->orders_state.pat_blt_brush.pattern + 1,
                 brush->pattern + 1, 7);
    }

    xrdp_order_pack_small_or_tiny(self, order_flags_ptr, order_flags,
                                  present_ptr, present, 2);
    return 0;
}

/*****************************************************************************/
/* returns error */
/* send a dest blt order */
/* max size 21 */
int APP_CC
xrdp_orders_dest_blt(struct xrdp_orders *self, int x, int y,
                     int cx, int cy, int rop,
                     struct xrdp_rect *rect)
{
    int order_flags;
    int vals[8];
    int present;
    char *present_ptr;
    char *order_flags_ptr;

    xrdp_orders_check(self, 21);
    self->order_count++;
    order_flags = RDP_ORDER_STANDARD;

    if (self->orders_state.last_order != RDP_ORDER_DESTBLT)
    {
        order_flags |= RDP_ORDER_CHANGE;
    }

    self->orders_state.last_order = RDP_ORDER_DESTBLT;

    if (rect != 0)
    {
        /* if clip is present, still check if its needed */
        if (x < rect->left || y < rect->top ||
                x + cx > rect->right || y + cy > rect->bottom)
        {
            order_flags |= RDP_ORDER_BOUNDS;

            if (xrdp_orders_last_bounds(self, rect))
            {
                order_flags |= RDP_ORDER_LASTBOUNDS;
            }
        }
    }

    vals[0] = x;
    vals[1] = self->orders_state.dest_blt_x;
    vals[2] = y;
    vals[3] = self->orders_state.dest_blt_y;
    vals[4] = cx;
    vals[5] = self->orders_state.dest_blt_cx;
    vals[6] = cy;
    vals[7] = self->orders_state.dest_blt_cy;

    if (xrdp_orders_send_delta(self, vals, 8))
    {
        order_flags |= RDP_ORDER_DELTA;
    }

    /* order_flags, set later, 1 byte */
    order_flags_ptr = self->out_s->p;
    out_uint8s(self->out_s, 1);

    if (order_flags & RDP_ORDER_CHANGE)
    {
        out_uint8(self->out_s, self->orders_state.last_order);
    }

    present = 0;
    /* present, set later, 1 byte */
    present_ptr = self->out_s->p;
    out_uint8s(self->out_s, 1);

    if ((order_flags & RDP_ORDER_BOUNDS) &&
            !(order_flags & RDP_ORDER_LASTBOUNDS))
    {
        xrdp_orders_out_bounds(self, rect);
    }

    if (x != self->orders_state.dest_blt_x)
    {
        present |= 0x01;

        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, x - self->orders_state.dest_blt_x);
        }
        else
        {
            out_uint16_le(self->out_s, x);
        }

        self->orders_state.dest_blt_x = x;
    }

    if (y != self->orders_state.dest_blt_y)
    {
        present |= 0x02;

        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, y - self->orders_state.dest_blt_y);
        }
        else
        {
            out_uint16_le(self->out_s, y);
        }

        self->orders_state.dest_blt_y = y;
    }

    if (cx != self->orders_state.dest_blt_cx)
    {
        present |= 0x04;

        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, cx - self->orders_state.dest_blt_cx);
        }
        else
        {
            out_uint16_le(self->out_s, cx);
        }

        self->orders_state.dest_blt_cx = cx;
    }

    if (cy != self->orders_state.dest_blt_cy)
    {
        present |= 0x08;

        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, cy - self->orders_state.dest_blt_cy);
        }
        else
        {
            out_uint16_le(self->out_s, cy);
        }

        self->orders_state.dest_blt_cy = cy;
    }

    if (rop != self->orders_state.dest_blt_rop)
    {
        present |= 0x10;
        out_uint8(self->out_s, rop);
        self->orders_state.dest_blt_rop = rop;
    }

    xrdp_order_pack_small_or_tiny(self, order_flags_ptr, order_flags,
                                  present_ptr, present, 1);
    return 0;
}

/*****************************************************************************/
/* returns error */
/* send a line order */
/* max size 32 */
int APP_CC
xrdp_orders_line(struct xrdp_orders *self, int mix_mode,
                 int startx, int starty,
                 int endx, int endy, int rop, int bg_color,
                 struct xrdp_pen *pen,
                 struct xrdp_rect *rect)
{
    int order_flags = 0;
    int vals[8] = {0, 0, 0, 0, 0, 0, 0, 0};
    int present = 0;
    char *present_ptr = (char *)NULL;
    char *order_flags_ptr = (char *)NULL;
    struct xrdp_pen blank_pen;

    g_memset(&blank_pen, 0, sizeof(struct xrdp_pen));

    /* if mix mode or rop are out of range, mstsc build 6000+ will parse the orders
       wrong */
    if ((mix_mode < 1) || (mix_mode > 2)) /* TRANSPARENT(1) or OPAQUE(2) */
    {
        mix_mode = 1;
    }

    if ((rop < 1) || (rop > 0x10))
    {
        rop = 0x0d; /* R2_COPYPEN */
    }

    xrdp_orders_check(self, 32);
    self->order_count++;
    order_flags = RDP_ORDER_STANDARD;

    if (self->orders_state.last_order != RDP_ORDER_LINE)
    {
        order_flags |= RDP_ORDER_CHANGE;
    }

    self->orders_state.last_order = RDP_ORDER_LINE;

    if (rect != 0)
    {
        /* if clip is present, still check if its needed */
        if (MIN(endx, startx) < rect->left ||
                MIN(endy, starty) < rect->top ||
                MAX(endx, startx) >= rect->right ||
                MAX(endy, starty) >= rect->bottom)
        {
            order_flags |= RDP_ORDER_BOUNDS;

            if (xrdp_orders_last_bounds(self, rect))
            {
                order_flags |= RDP_ORDER_LASTBOUNDS;
            }
        }
    }

    vals[0] = startx;
    vals[1] = self->orders_state.line_startx;
    vals[2] = starty;
    vals[3] = self->orders_state.line_starty;
    vals[4] = endx;
    vals[5] = self->orders_state.line_endx;
    vals[6] = endy;
    vals[7] = self->orders_state.line_endy;

    if (xrdp_orders_send_delta(self, vals, 8))
    {
        order_flags |= RDP_ORDER_DELTA;
    }

    /* order_flags, set later, 1 byte */
    order_flags_ptr = self->out_s->p;
    out_uint8s(self->out_s, 1);

    if (order_flags & RDP_ORDER_CHANGE)
    {
        out_uint8(self->out_s, self->orders_state.last_order);
    }

    present = 0;
    /* present, set later, 2 bytes */
    present_ptr = self->out_s->p;
    out_uint8s(self->out_s, 2);

    if ((order_flags & RDP_ORDER_BOUNDS) &&
            !(order_flags & RDP_ORDER_LASTBOUNDS))
    {
        xrdp_orders_out_bounds(self, rect);
    }

    if (mix_mode != self->orders_state.line_mix_mode)
    {
        present |= 0x0001;
        out_uint16_le(self->out_s, mix_mode);
        self->orders_state.line_mix_mode = mix_mode;
    }

    if (startx != self->orders_state.line_startx)
    {
        present |= 0x0002;

        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, startx - self->orders_state.line_startx);
        }
        else
        {
            out_uint16_le(self->out_s, startx);
        }

        self->orders_state.line_startx = startx;
    }

    if (starty != self->orders_state.line_starty)
    {
        present |= 0x0004;

        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, starty - self->orders_state.line_starty);
        }
        else
        {
            out_uint16_le(self->out_s, starty);
        }

        self->orders_state.line_starty = starty;
    }

    if (endx != self->orders_state.line_endx)
    {
        present |= 0x0008;

        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, endx - self->orders_state.line_endx);
        }
        else
        {
            out_uint16_le(self->out_s, endx);
        }

        self->orders_state.line_endx = endx;
    }

    if (endy != self->orders_state.line_endy)
    {
        present |= 0x0010;

        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, endy - self->orders_state.line_endy);
        }
        else
        {
            out_uint16_le(self->out_s, endy);
        }

        self->orders_state.line_endy = endy;
    }

    if (bg_color != self->orders_state.line_bg_color)
    {
        present |= 0x0020;
        out_uint8(self->out_s, bg_color);
        out_uint8(self->out_s, bg_color >> 8);
        out_uint8(self->out_s, bg_color >> 16);
        self->orders_state.line_bg_color = bg_color;
    }

    if (rop != self->orders_state.line_rop)
    {
        present |= 0x0040;
        out_uint8(self->out_s, rop);
        self->orders_state.line_rop = rop;
    }

    if (pen == 0)
    {
        g_memset(&blank_pen, 0, sizeof(struct xrdp_pen));
        pen = &blank_pen;
    }

    if (pen->style != self->orders_state.line_pen.style)
    {
        present |= 0x0080;
        out_uint8(self->out_s, pen->style);
        self->orders_state.line_pen.style = pen->style;
    }

    if (pen->width != self->orders_state.line_pen.width)
    {
        present |= 0x0100;
        out_uint8(self->out_s, pen->width);
        self->orders_state.line_pen.width = pen->width;
    }

    if (pen->color != self->orders_state.line_pen.color)
    {
        present |= 0x0200;
        out_uint8(self->out_s, pen->color);
        out_uint8(self->out_s, pen->color >> 8);
        out_uint8(self->out_s, pen->color >> 16);
        self->orders_state.line_pen.color = pen->color;
    }

    xrdp_order_pack_small_or_tiny(self, order_flags_ptr, order_flags,
                                  present_ptr, present, 2);
    return 0;
}

/*****************************************************************************/
/* returns error */
/* send a mem blt order */
/* max size  30 */
int APP_CC
xrdp_orders_mem_blt(struct xrdp_orders *self, int cache_id,
                    int color_table, int x, int y, int cx, int cy,
                    int rop, int srcx, int srcy,
                    int cache_idx, struct xrdp_rect *rect)
{
    int order_flags = 0;
    int vals[12] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
    int present = 0;
    char *present_ptr = (char *)NULL;
    char *order_flags_ptr = (char *)NULL;

    xrdp_orders_check(self, 30);
    self->order_count++;
    order_flags = RDP_ORDER_STANDARD;

    if (self->orders_state.last_order != RDP_ORDER_MEMBLT)
    {
        order_flags |= RDP_ORDER_CHANGE;
    }

    self->orders_state.last_order = RDP_ORDER_MEMBLT;

    if (rect != 0)
    {
        /* if clip is present, still check if its needed */
        if (x < rect->left || y < rect->top ||
                x + cx > rect->right || y + cy > rect->bottom)
        {
            order_flags |= RDP_ORDER_BOUNDS;

            if (xrdp_orders_last_bounds(self, rect))
            {
                order_flags |= RDP_ORDER_LASTBOUNDS;
            }
        }
    }

    vals[0] = x;
    vals[1] = self->orders_state.mem_blt_x;
    vals[2] = y;
    vals[3] = self->orders_state.mem_blt_y;
    vals[4] = cx;
    vals[5] = self->orders_state.mem_blt_cx;
    vals[6] = cy;
    vals[7] = self->orders_state.mem_blt_cy;
    vals[8] = srcx;
    vals[9] = self->orders_state.mem_blt_srcx;
    vals[10] = srcy;
    vals[11] = self->orders_state.mem_blt_srcy;

    if (xrdp_orders_send_delta(self, vals, 12))
    {
        order_flags |= RDP_ORDER_DELTA;
    }

    /* order_flags, set later, 1 byte */
    order_flags_ptr = self->out_s->p;
    out_uint8s(self->out_s, 1);

    if (order_flags & RDP_ORDER_CHANGE)
    {
        out_uint8(self->out_s, self->orders_state.last_order);
    }

    present = 0;
    /* present, set later, 2 bytes */
    present_ptr = self->out_s->p;
    out_uint8s(self->out_s, 2);

    if ((order_flags & RDP_ORDER_BOUNDS) &&
            !(order_flags & RDP_ORDER_LASTBOUNDS))
    {
        xrdp_orders_out_bounds(self, rect);
    }

    if (cache_id != self->orders_state.mem_blt_cache_id ||
            color_table != self->orders_state.mem_blt_color_table)
    {
        present |= 0x0001;
        out_uint8(self->out_s, cache_id);
        out_uint8(self->out_s, color_table);
        self->orders_state.mem_blt_cache_id = cache_id;
        self->orders_state.mem_blt_color_table = color_table;
    }

    if (x != self->orders_state.mem_blt_x)
    {
        present |= 0x0002;

        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, x - self->orders_state.mem_blt_x);
        }
        else
        {
            out_uint16_le(self->out_s, x);
        }

        self->orders_state.mem_blt_x = x;
    }

    if (y != self->orders_state.mem_blt_y)
    {
        present |= 0x0004;

        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, y - self->orders_state.mem_blt_y);
        }
        else
        {
            out_uint16_le(self->out_s, y);
        }

        self->orders_state.mem_blt_y = y;
    }

    if (cx != self->orders_state.mem_blt_cx)
    {
        present |= 0x0008;

        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, cx - self->orders_state.mem_blt_cx);
        }
        else
        {
            out_uint16_le(self->out_s, cx);
        }

        self->orders_state.mem_blt_cx = cx;
    }

    if (cy != self->orders_state.mem_blt_cy)
    {
        present |= 0x0010;

        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, cy - self->orders_state.mem_blt_cy);
        }
        else
        {
            out_uint16_le(self->out_s, cy);
        }

        self->orders_state.mem_blt_cy = cy;
    }

    if (rop != self->orders_state.mem_blt_rop)
    {
        present |= 0x0020;
        out_uint8(self->out_s, rop);
        self->orders_state.mem_blt_rop = rop;
    }

    if (srcx != self->orders_state.mem_blt_srcx)
    {
        present |= 0x0040;

        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, srcx - self->orders_state.mem_blt_srcx);
        }
        else
        {
            out_uint16_le(self->out_s, srcx);
        }

        self->orders_state.mem_blt_srcx = srcx;
    }

    if (srcy != self->orders_state.mem_blt_srcy)
    {
        present |= 0x0080;

        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, srcy - self->orders_state.mem_blt_srcy);
        }
        else
        {
            out_uint16_le(self->out_s, srcy);
        }

        self->orders_state.mem_blt_srcy = srcy;
    }

    if (cache_idx != self->orders_state.mem_blt_cache_idx)
    {
        present |= 0x0100;
        out_uint16_le(self->out_s, cache_idx);
        self->orders_state.mem_blt_cache_idx = cache_idx;
    }

    xrdp_order_pack_small_or_tiny(self, order_flags_ptr, order_flags,
                                  present_ptr, present, 2);
    return 0;
}

/*****************************************************************************/
/* returns error */
int APP_CC
xrdp_orders_text(struct xrdp_orders *self,
                 int font, int flags, int mixmode,
                 int fg_color, int bg_color,
                 int clip_left, int clip_top,
                 int clip_right, int clip_bottom,
                 int box_left, int box_top,
                 int box_right, int box_bottom,
                 int x, int y, char *data, int data_len,
                 struct xrdp_rect *rect)
{
    int order_flags = 0;
    int present = 0;
    char *present_ptr = (char *)NULL;
    char *order_flags_ptr = (char *)NULL;

    xrdp_orders_check(self, 100);
    self->order_count++;
    order_flags = RDP_ORDER_STANDARD;

    if (self->orders_state.last_order != RDP_ORDER_TEXT2)
    {
        order_flags |= RDP_ORDER_CHANGE;
    }

    self->orders_state.last_order = RDP_ORDER_TEXT2;

    if (rect != 0)
    {
        /* if clip is present, still check if its needed */
        if ((box_right - box_left > 1 &&
                (box_left < rect->left ||
                 box_top < rect->top ||
                 box_right > rect->right ||
                 box_bottom > rect->bottom)) ||
                (clip_left < rect->left ||
                 clip_top < rect->top ||
                 clip_right > rect->right ||
                 clip_bottom > rect->bottom))
        {
            order_flags |= RDP_ORDER_BOUNDS;

            if (xrdp_orders_last_bounds(self, rect))
            {
                order_flags |= RDP_ORDER_LASTBOUNDS;
            }
        }
    }

    /* order_flags, set later, 1 byte */
    order_flags_ptr = self->out_s->p;
    out_uint8s(self->out_s, 1);

    if (order_flags & RDP_ORDER_CHANGE)
    {
        out_uint8(self->out_s, self->orders_state.last_order);
    }

    present = 0;
    /* present, set later, 3 bytes */
    present_ptr = self->out_s->p;
    out_uint8s(self->out_s, 3);

    if ((order_flags & RDP_ORDER_BOUNDS) &&
            !(order_flags & RDP_ORDER_LASTBOUNDS))
    {
        xrdp_orders_out_bounds(self, rect);
    }

    if (font != self->orders_state.text_font)
    {
        present |= 0x000001;
        out_uint8(self->out_s, font);
        self->orders_state.text_font = font;
    }

    if (flags != self->orders_state.text_flags)
    {
        present |= 0x000002;
        out_uint8(self->out_s, flags);
        self->orders_state.text_flags = flags;
    }

    /* unknown */
    if (mixmode != self->orders_state.text_mixmode)
    {
        present |= 0x000008;
        out_uint8(self->out_s, mixmode);
        self->orders_state.text_mixmode = mixmode;
    }

    if (fg_color != self->orders_state.text_fg_color)
    {
        present |= 0x000010;
        out_uint8(self->out_s, fg_color);
        out_uint8(self->out_s, fg_color >> 8);
        out_uint8(self->out_s, fg_color >> 16);
        self->orders_state.text_fg_color = fg_color;
    }

    if (bg_color != self->orders_state.text_bg_color)
    {
        present |= 0x000020;
        out_uint8(self->out_s, bg_color);
        out_uint8(self->out_s, bg_color >> 8);
        out_uint8(self->out_s, bg_color >> 16);
        self->orders_state.text_bg_color = bg_color;
    }

    if (clip_left != self->orders_state.text_clip_left)
    {
        present |= 0x000040;
        out_uint16_le(self->out_s, clip_left);
        self->orders_state.text_clip_left = clip_left;
    }

    if (clip_top != self->orders_state.text_clip_top)
    {
        present |= 0x000080;
        out_uint16_le(self->out_s, clip_top);
        self->orders_state.text_clip_top = clip_top;
    }

    if (clip_right != self->orders_state.text_clip_right)
    {
        present |= 0x000100;
        out_uint16_le(self->out_s, clip_right);
        self->orders_state.text_clip_right = clip_right;
    }

    if (clip_bottom != self->orders_state.text_clip_bottom)
    {
        present |= 0x000200;
        out_uint16_le(self->out_s, clip_bottom);
        self->orders_state.text_clip_bottom = clip_bottom;
    }

    if (box_left != self->orders_state.text_box_left)
    {
        present |= 0x000400;
        out_uint16_le(self->out_s, box_left);
        self->orders_state.text_box_left = box_left;
    }

    if (box_top != self->orders_state.text_box_top)
    {
        present |= 0x000800;
        out_uint16_le(self->out_s, box_top);
        self->orders_state.text_box_top = box_top;
    }

    if (box_right != self->orders_state.text_box_right)
    {
        present |= 0x001000;
        out_uint16_le(self->out_s, box_right);
        self->orders_state.text_box_right = box_right;
    }

    if (box_bottom != self->orders_state.text_box_bottom)
    {
        present |= 0x002000;
        out_uint16_le(self->out_s, box_bottom);
        self->orders_state.text_box_bottom = box_bottom;
    }

    if (x != self->orders_state.text_x)
    {
        present |= 0x080000;
        out_uint16_le(self->out_s, x);
        self->orders_state.text_x = x;
    }

    if (y != self->orders_state.text_y)
    {
        present |= 0x100000;
        out_uint16_le(self->out_s, y);
        self->orders_state.text_y = y;
    }

    {
        /* always send text */
        present |= 0x200000;
        out_uint8(self->out_s, data_len);
        out_uint8a(self->out_s, data, data_len);
    }

    xrdp_order_pack_small_or_tiny(self, order_flags_ptr, order_flags,
                                  present_ptr, present, 3);
    return 0;
}

/*****************************************************************************/
/* returns error */
/* when a palette gets sent, send the main palette too */
int APP_CC
xrdp_orders_send_palette(struct xrdp_orders *self, int *palette,
                         int cache_id)
{
    int order_flags;
    int len;
    int i;

    xrdp_orders_check(self, 2000);
    self->order_count++;
    order_flags = RDP_ORDER_STANDARD | RDP_ORDER_SECONDARY;
    out_uint8(self->out_s, order_flags);
    len = 1027 - 7; /* length after type minus 7 */
    out_uint16_le(self->out_s, len);
    out_uint16_le(self->out_s, 0); /* flags */
    out_uint8(self->out_s, RDP_ORDER_COLCACHE); /* type */
    out_uint8(self->out_s, cache_id);
    out_uint16_le(self->out_s, 256); /* num colors */

    for (i = 0; i < 256; i++)
    {
        out_uint8(self->out_s, palette[i]);
        out_uint8(self->out_s, palette[i] >> 8);
        out_uint8(self->out_s, palette[i] >> 16);
        out_uint8(self->out_s, 0);
    }

    return 0;
}

/*****************************************************************************/
/* returns error */
/* max size width * height * Bpp + 16 */
int APP_CC
xrdp_orders_send_raw_bitmap(struct xrdp_orders *self,
                            int width, int height, int bpp, char *data,
                            int cache_id, int cache_idx)
{
    int order_flags = 0;
    int len = 0;
    int bufsize = 0;
    int Bpp = 0;
    int i = 0;
    int j = 0;
    int pixel = 0;
    int e = 0;

    if (width > 64)
    {
        g_writeln("error, width > 64");
        return 1;
    }

    if (height > 64)
    {
        g_writeln("error, height > 64");
        return 1;
    }

    e = width % 4;

    if (e != 0)
    {
        e = 4 - e;
    }

    Bpp = (bpp + 7) / 8;
    bufsize = (width + e) * height * Bpp;
    xrdp_orders_check(self, bufsize + 16);
    self->order_count++;
    order_flags = RDP_ORDER_STANDARD | RDP_ORDER_SECONDARY;
    out_uint8(self->out_s, order_flags);
    len = (bufsize + 9) - 7; /* length after type minus 7 */
    out_uint16_le(self->out_s, len);
    out_uint16_le(self->out_s, 8); /* flags */
    out_uint8(self->out_s, RDP_ORDER_RAW_BMPCACHE); /* type */
    out_uint8(self->out_s, cache_id);
    out_uint8s(self->out_s, 1); /* pad */
    out_uint8(self->out_s, width + e);
    out_uint8(self->out_s, height);
    out_uint8(self->out_s, bpp);
    out_uint16_le(self->out_s, bufsize);
    out_uint16_le(self->out_s, cache_idx);

    for (i = height - 1; i >= 0; i--)
    {
        for (j = 0; j < width; j++)
        {
            if (Bpp == 3)
            {
                pixel = GETPIXEL32(data, j, i, width);
                out_uint8(self->out_s, pixel >> 16);
                out_uint8(self->out_s, pixel >> 8);
                out_uint8(self->out_s, pixel);
            }
            else if (Bpp == 2)
            {
                pixel = GETPIXEL16(data, j, i, width);
                out_uint8(self->out_s, pixel);
                out_uint8(self->out_s, pixel >> 8);
            }
            else if (Bpp == 1)
            {
                pixel = GETPIXEL8(data, j, i, width);
                out_uint8(self->out_s, pixel);
            }
        }

        for (j = 0; j < e; j++)
        {
            out_uint8s(self->out_s, Bpp);
        }
    }

    return 0;
}

/*****************************************************************************/
/* returns error */
/* max size width * height * Bpp + 16 */
int APP_CC
xrdp_orders_send_bitmap(struct xrdp_orders *self,
                        int width, int height, int bpp, char *data,
                        int cache_id, int cache_idx)
{
    int order_flags = 0;
    int len = 0;
    int bufsize = 0;
    int Bpp = 0;
    int i = 0;
    int lines_sending = 0;
    int e = 0;
    struct stream *s = NULL;
    struct stream *temp_s = NULL;
    char *p = NULL;

    if (width > 64)
    {
        g_writeln("error, width > 64");
        return 1;
    }

    if (height > 64)
    {
        g_writeln("error, height > 64");
        return 1;
    }

    e = width % 4;

    if (e != 0)
    {
        e = 4 - e;
    }

    make_stream(s);
    init_stream(s, 16384);
    make_stream(temp_s);
    init_stream(temp_s, 16384);
    p = s->p;
    i = height;
    lines_sending = xrdp_bitmap_compress(data, width, height, s, bpp, 16384,
                                         i - 1, temp_s, e);

    if (lines_sending != height)
    {
        free_stream(s);
        free_stream(temp_s);
        g_writeln("error in xrdp_orders_send_bitmap, lines_sending(%d) != \
height(%d)", lines_sending, height);
        return 1;
    }

    bufsize = (int)(s->p - p);
    Bpp = (bpp + 7) / 8;
    xrdp_orders_check(self, bufsize + 16);
    self->order_count++;
    order_flags = RDP_ORDER_STANDARD | RDP_ORDER_SECONDARY;
    out_uint8(self->out_s, order_flags);

    if (self->rdp_layer->client_info.op2)
    {
        len = (bufsize + 9) - 7; /* length after type minus 7 */
        out_uint16_le(self->out_s, len);
        out_uint16_le(self->out_s, 1024); /* flags */
    }
    else
    {
        len = (bufsize + 9 + 8) - 7; /* length after type minus 7 */
        out_uint16_le(self->out_s, len);
        out_uint16_le(self->out_s, 8); /* flags */
    }

    out_uint8(self->out_s, RDP_ORDER_BMPCACHE); /* type */
    out_uint8(self->out_s, cache_id);
    out_uint8s(self->out_s, 1); /* pad */
    out_uint8(self->out_s, width + e);
    out_uint8(self->out_s, height);
    out_uint8(self->out_s, bpp);
    out_uint16_le(self->out_s, bufsize/* + 8*/);
    out_uint16_le(self->out_s, cache_idx);

    if (!self->rdp_layer->client_info.op2)
    {
        out_uint8s(self->out_s, 2); /* pad */
        out_uint16_le(self->out_s, bufsize);
        out_uint16_le(self->out_s, (width + e) * Bpp); /* line size */
        out_uint16_le(self->out_s, (width + e) *
                      Bpp * height); /* final size */
    }

    out_uint8a(self->out_s, s->data, bufsize);
    free_stream(s);
    free_stream(temp_s);
    return 0;
}

/*****************************************************************************/
/* returns error */
/* max size datasize + 18*/
/* todo, only sends one for now */
int APP_CC
xrdp_orders_send_font(struct xrdp_orders *self,
                      struct xrdp_font_char *font_char,
                      int font_index, int char_index)
{
    int order_flags = 0;
    int datasize = 0;
    int len = 0;

    datasize = FONT_DATASIZE(font_char);
    xrdp_orders_check(self, datasize + 18);
    self->order_count++;
    order_flags = RDP_ORDER_STANDARD | RDP_ORDER_SECONDARY;
    out_uint8(self->out_s, order_flags);
    len = (datasize + 12) - 7; /* length after type minus 7 */
    out_uint16_le(self->out_s, len);
    out_uint16_le(self->out_s, 8); /* flags */
    out_uint8(self->out_s, RDP_ORDER_FONTCACHE); /* type */
    out_uint8(self->out_s, font_index);
    out_uint8(self->out_s, 1); /* num of chars */
    out_uint16_le(self->out_s, char_index);
    out_uint16_le(self->out_s, font_char->offset);
    out_uint16_le(self->out_s, font_char->baseline);
    out_uint16_le(self->out_s, font_char->width);
    out_uint16_le(self->out_s, font_char->height);
    out_uint8a(self->out_s, font_char->data, datasize);
    return 0;
}

/*****************************************************************************/
/* returns error */
/* max size width * height * Bpp + 14 */
int APP_CC
xrdp_orders_send_raw_bitmap2(struct xrdp_orders *self,
                             int width, int height, int bpp, char *data,
                             int cache_id, int cache_idx)
{
    int order_flags = 0;
    int len = 0;
    int bufsize = 0;
    int Bpp = 0;
    int i = 0;
    int j = 0;
    int pixel = 0;
    int e = 0;

    if (width > 64)
    {
        g_writeln("error, width > 64");
        return 1;
    }

    if (height > 64)
    {
        g_writeln("error, height > 64");
        return 1;
    }

    e = width % 4;

    if (e != 0)
    {
        e = 4 - e;
    }

    Bpp = (bpp + 7) / 8;
    bufsize = (width + e) * height * Bpp;
    xrdp_orders_check(self, bufsize + 14);
    self->order_count++;
    order_flags = RDP_ORDER_STANDARD | RDP_ORDER_SECONDARY;
    out_uint8(self->out_s, order_flags);
    len = (bufsize + 6) - 7; /* length after type minus 7 */
    out_uint16_le(self->out_s, len);
    i = (((Bpp + 2) << 3) & 0x38) | (cache_id & 7);
    out_uint16_le(self->out_s, i); /* flags */
    out_uint8(self->out_s, RDP_ORDER_RAW_BMPCACHE2); /* type */
    out_uint8(self->out_s, width + e);
    out_uint8(self->out_s, height);
    out_uint16_be(self->out_s, bufsize | 0x4000);
    i = ((cache_idx >> 8) & 0xff) | 0x80;
    out_uint8(self->out_s, i);
    i = cache_idx & 0xff;
    out_uint8(self->out_s, i);

    for (i = height - 1; i >= 0; i--)
    {
        for (j = 0; j < width; j++)
        {
            if (Bpp == 3)
            {
                pixel = GETPIXEL32(data, j, i, width);
                out_uint8(self->out_s, pixel >> 16);
                out_uint8(self->out_s, pixel >> 8);
                out_uint8(self->out_s, pixel);
            }
            else if (Bpp == 2)
            {
                pixel = GETPIXEL16(data, j, i, width);
                out_uint8(self->out_s, pixel);
                out_uint8(self->out_s, pixel >> 8);
            }
            else if (Bpp == 1)
            {
                pixel = GETPIXEL8(data, j, i, width);
                out_uint8(self->out_s, pixel);
            }
        }

        for (j = 0; j < e; j++)
        {
            out_uint8s(self->out_s, Bpp);
        }
    }

    return 0;
}

/*****************************************************************************/
/* returns error */
/* max size width * height * Bpp + 14 */
int APP_CC
xrdp_orders_send_bitmap2(struct xrdp_orders *self,
                         int width, int height, int bpp, char *data,
                         int cache_id, int cache_idx, int hints)
{
    int order_flags = 0;
    int len = 0;
    int bufsize = 0;
    int Bpp = 0;
    int i = 0;
    int lines_sending = 0;
    int e = 0;
    struct stream *s = NULL;
    struct stream *temp_s = NULL;
    char *p = NULL;

    if (width > 64)
    {
        g_writeln("error, width > 64");
        return 1;
    }

    if (height > 64)
    {
        g_writeln("error, height > 64");
        return 1;
    }

    e = width % 4;

    if (e != 0)
    {
        e = 4 - e;
    }

    make_stream(s);
    init_stream(s, 16384);
    make_stream(temp_s);
    init_stream(temp_s, 16384);
    p = s->p;
    i = height;
    lines_sending = xrdp_bitmap_compress(data, width, height, s, bpp, 16384,
                                         i - 1, temp_s, e);

    if (lines_sending != height)
    {
        free_stream(s);
        free_stream(temp_s);
        g_writeln("error in xrdp_orders_send_bitmap2, lines_sending(%d) != \
height(%d)", lines_sending, height);
        return 1;
    }

    bufsize = (int)(s->p - p);
    Bpp = (bpp + 7) / 8;
    xrdp_orders_check(self, bufsize + 14);
    self->order_count++;
    order_flags = RDP_ORDER_STANDARD | RDP_ORDER_SECONDARY;
    out_uint8(self->out_s, order_flags);
    len = (bufsize + 6) - 7; /* length after type minus 7 */
    out_uint16_le(self->out_s, len);
    i = (((Bpp + 2) << 3) & 0x38) | (cache_id & 7);
    i = i | (0x08 << 7); /* CBR2_NO_BITMAP_COMPRESSION_HDR */
    out_uint16_le(self->out_s, i); /* flags */
    out_uint8(self->out_s, RDP_ORDER_BMPCACHE2); /* type */
    out_uint8(self->out_s, width + e);
    out_uint8(self->out_s, height);
    out_uint16_be(self->out_s, bufsize | 0x4000);
    i = ((cache_idx >> 8) & 0xff) | 0x80;
    out_uint8(self->out_s, i);
    i = cache_idx & 0xff;
    out_uint8(self->out_s, i);
    out_uint8a(self->out_s, s->data, bufsize);
    free_stream(s);
    free_stream(temp_s);
    return 0;
}

/*****************************************************************************/
static int
xrdp_orders_send_as_jpeg(struct xrdp_orders *self,
                         int width, int height, int bpp, int hints)
{
    if (hints & 1)
    {
        return 0;
    }

    if (bpp != 24)
    {
        return 0;
    }

    if (width * height < 64)
    {
        return 0;
    }

    return 1;
}

#if defined(XRDP_FREERDP1)
/*****************************************************************************/
/*  secondary drawing order (bitmap v3) using remotefx compression */
static int APP_CC
xrdp_orders_send_as_rfx(struct xrdp_orders *self,
                        int width, int height, int bpp,
                        int hints)
{
    if (hints & 1)
    {
        return 0;
    }

    if (bpp != 24)
    {
        return 0;
    }

    if (width * height < 64)
    {
        return 0;
    }

    return 1;
}
#endif

/*****************************************************************************/
static int APP_CC
xrdp_orders_out_v3(struct xrdp_orders *self, int cache_id, int cache_idx,
                   char *buf, int bufsize, int width, int height, int bpp,
                   int codec_id)
{
    int Bpp;
    int order_flags;
    int len;
    int i;

    Bpp = (bpp + 7) / 8;
    xrdp_orders_check(self, bufsize + 30);
    self->order_count++;
    order_flags = RDP_ORDER_STANDARD | RDP_ORDER_SECONDARY;
    out_uint8(self->out_s, order_flags);
    len = (bufsize + 22) - 7; /* length after type minus 7 */
    out_uint16_le(self->out_s, len);
    i = (((Bpp + 2) << 3) & 0x38) | (cache_id & 7);
    out_uint16_le(self->out_s, i); /* flags */
    out_uint8(self->out_s, RDP_ORDER_BMPCACHE3); /* type */
    /* cache index */
    out_uint16_le(self->out_s, cache_idx);
    /* persistant cache key 1/2 */
    out_uint32_le(self->out_s, 0);
    out_uint32_le(self->out_s, 0);
    /* bitmap data */
    out_uint8(self->out_s, bpp);
    out_uint8(self->out_s, 0); /* reserved */
    out_uint8(self->out_s, 0); /* reserved */
    out_uint8(self->out_s, codec_id);
    out_uint16_le(self->out_s, width);
    out_uint16_le(self->out_s, height);
    out_uint32_le(self->out_s, bufsize);
    out_uint8a(self->out_s, buf, bufsize);
    return 0;
}

/*****************************************************************************/
/*  secondary drawing order (bitmap v3) using remotefx compression */
int APP_CC
xrdp_orders_send_bitmap3(struct xrdp_orders *self,
                         int width, int height, int bpp, char *data,
                         int cache_id, int cache_idx, int hints)
{
    int e;
    int bufsize;
    int quality;
    struct stream *xr_s; /* xrdp stream */
    struct stream *temp_s; /* xrdp stream */
    struct xrdp_client_info *ci;
#if defined(XRDP_FREERDP1)
    STREAM *fr_s; /* FreeRDP stream */
    RFX_CONTEXT *context;
    RFX_RECT rect;
#endif

    ci = &(self->rdp_layer->client_info);

    if (ci->v3_codec_id == 0)
    {
        return 2;
    }

    if (ci->v3_codec_id == ci->rfx_codec_id)
    {
#if defined(XRDP_FREERDP1)

        if (!xrdp_orders_send_as_rfx(self, width, height, bpp, hints))
        {
            return 2;
        }

        LLOGLN(10, ("xrdp_orders_send_bitmap3: rfx"));
        context = (RFX_CONTEXT *)(self->rdp_layer->rfx_enc);
        make_stream(xr_s);
        init_stream(xr_s, 16384);
        fr_s = stream_new(0);
        stream_attach(fr_s, (tui8 *)(xr_s->data), 16384);
        rect.x = 0;
        rect.y = 0;
        rect.width = width;
        rect.height = height;
        rfx_compose_message(context, fr_s, &rect, 1, (tui8 *)data, width,
                            height, width * 4);
        bufsize = stream_get_length(fr_s);
        xrdp_orders_out_v3(self, cache_id, cache_idx, (char *)(fr_s->data), bufsize,
                           width, height, bpp, ci->v3_codec_id);
        stream_detach(fr_s);
        stream_free(fr_s);
        free_stream(xr_s);
        return 0;
#else
        return 2;
#endif
    }
    else if (ci->v3_codec_id == ci->jpeg_codec_id)
    {
#if defined(XRDP_JPEG)

        if (!xrdp_orders_send_as_jpeg(self, width, height, bpp, hints))
        {
            LLOGLN(10, ("xrdp_orders_send_bitmap3: jpeg skipped"));
            return 2;
        }

        LLOGLN(10, ("xrdp_orders_send_bitmap3: jpeg"));
        e = width % 4;

        if (e != 0)
        {
            e = 4 - e;
        }

        make_stream(xr_s);
        init_stream(xr_s, 16384);
        make_stream(temp_s);
        init_stream(temp_s, 16384);
        quality = ci->jpeg_prop[0];
        xrdp_jpeg_compress(data, width, height, xr_s, bpp, 16384,
                           height - 1, temp_s, e, quality);
        s_mark_end(xr_s);
        bufsize = (int)(xr_s->end - xr_s->data);
        xrdp_orders_out_v3(self, cache_id, cache_idx, (char *)(xr_s->data), bufsize,
                           width + e, height, bpp, ci->v3_codec_id);
        free_stream(xr_s);
        free_stream(temp_s);
        return 0;
#else
        return 2;
#endif
    }
    else
    {
        g_writeln("xrdp_orders_send_bitmap3: todo unknown codec");
        return 1;
    }

    return 0;
}

/*****************************************************************************/
/* returns error */
/* send a brush cache entry */
int APP_CC
xrdp_orders_send_brush(struct xrdp_orders *self, int width, int height,
                       int bpp, int type, int size, char *data, int cache_id)
{
    int order_flags = 0;
    int len = 0;

    xrdp_orders_check(self, size + 12);
    self->order_count++;
    order_flags = RDP_ORDER_STANDARD | RDP_ORDER_SECONDARY;
    out_uint8(self->out_s, order_flags);
    len = (size + 6) - 7; /* length after type minus 7 */
    out_uint16_le(self->out_s, len);
    out_uint16_le(self->out_s, 0); /* flags */
    out_uint8(self->out_s, RDP_ORDER_BRUSHCACHE); /* type */
    out_uint8(self->out_s, cache_id);
    out_uint8(self->out_s, bpp);
    out_uint8(self->out_s, width);
    out_uint8(self->out_s, height);
    out_uint8(self->out_s, type);
    out_uint8(self->out_s, size);
    out_uint8a(self->out_s, data, size);
    return 0;
}

/*****************************************************************************/
/* returns error */
/* send an off screen bitmap entry */
int APP_CC
xrdp_orders_send_create_os_surface(struct xrdp_orders *self, int id,
                                   int width, int height,
                                   struct list *del_list)
{
    int order_flags;
    int cache_id;
    int flags;
    int index;
    int bytes;
    int num_del_list;

    bytes = 7;
    num_del_list = del_list->count;

    if (num_del_list > 0)
    {
        bytes += 2;
        bytes += num_del_list * 2;
    }

    xrdp_orders_check(self, bytes);
    self->order_count++;
    order_flags = RDP_ORDER_SECONDARY;
    order_flags |= 1 << 2; /* type RDP_ORDER_ALTSEC_CREATE_OFFSCR_BITMAP */
    out_uint8(self->out_s, order_flags);
    cache_id = id & 0x7fff;
    flags = cache_id;

    if (num_del_list > 0)
    {
        flags |= 0x8000;
    }

    out_uint16_le(self->out_s, flags);
    out_uint16_le(self->out_s, width);
    out_uint16_le(self->out_s, height);

    if (num_del_list > 0)
    {
        /* delete list */
        out_uint16_le(self->out_s, num_del_list);

        for (index = 0; index < num_del_list; index++)
        {
            cache_id = list_get_item(del_list, index) & 0x7fff;
            out_uint16_le(self->out_s, cache_id);
        }
    }

    return 0;
}

/*****************************************************************************/
/* returns error */
int APP_CC
xrdp_orders_send_switch_os_surface(struct xrdp_orders *self, int id)
{
    int order_flags;
    int cache_id;

    xrdp_orders_check(self, 3);
    self->order_count++;
    order_flags = RDP_ORDER_SECONDARY;
    order_flags |= 0 << 2; /* type RDP_ORDER_ALTSEC_SWITCH_SURFACE */
    out_uint8(self->out_s, order_flags);
    cache_id = id & 0xffff;
    out_uint16_le(self->out_s, cache_id);
    return 0;
}