RDP/client-1.8.3/orders.c

	orders.c revision 6e9aa255e3376b2da5824c09c4c62bc233463bfe
/* -*- c-basic-offset: 8 -*-
   rdesktop: A Remote Desktop Protocol client.
   RDP order processing
   Copyright (C) Matthew Chapman <matthewc.unsw.edu.au> 1999-2008

   This program is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

/*
 * Oracle GPL Disclaimer: For the avoidance of doubt, except that if any license choice
 * other than GPL or LGPL is available it will apply instead, Oracle elects to use only
 * the General Public License version 2 (GPLv2) at this time for any software where
 * a choice of GPL license versions is made available with the language indicating
 * that GPLv2 or any later version may be used, or where a choice of which version
 * of the GPL is applied is otherwise unspecified.
 */

#include "rdesktop.h"
#include "orders.h"

extern uint8 *g_next_packet;
static RDP_ORDER_STATE g_order_state;
extern RDP_VERSION g_rdp_version;

/* Read field indicating which parameters are present */
static void
rdp_in_present(STREAM s, uint32 * present, uint8 flags, int size)
{
    uint8 bits;
    int i;

    if (flags & RDP_ORDER_SMALL)
    {
        size--;
    }

    if (flags & RDP_ORDER_TINY)
    {
        if (size < 2)
            size = 0;
        else
            size -= 2;
    }

    *present = 0;
    for (i = 0; i < size; i++)
    {
        in_uint8(s, bits);
        *present |= bits << (i * 8);
    }
}

/* Read a co-ordinate (16-bit, or 8-bit delta) */
static void
rdp_in_coord(STREAM s, sint16 * coord, RD_BOOL delta)
{
    sint8 change;

    if (delta)
    {
        in_uint8(s, change);
        *coord += change;
    }
    else
    {
        in_uint16_le(s, *coord);
    }
}

/* Parse a delta co-ordinate in polyline/polygon order form */
static int
parse_delta(uint8 * buffer, int *offset)
{
    int value = buffer[(*offset)++];
    int two_byte = value & 0x80;

    if (value & 0x40)   /* sign bit */
        value |= ~0x3f;
    else
        value &= 0x3f;

    if (two_byte)
        value = (value << 8) | buffer[(*offset)++];

    return value;
}

/* Read a colour entry */
static void
rdp_in_colour(STREAM s, uint32 * colour)
{
    uint32 i;
    in_uint8(s, i);
    *colour = i;
    in_uint8(s, i);
    *colour |= i << 8;
    in_uint8(s, i);
    *colour |= i << 16;
}

/* Parse bounds information */
static RD_BOOL
rdp_parse_bounds(STREAM s, BOUNDS * bounds)
{
    uint8 present;

    in_uint8(s, present);

    if (present & 1)
        rdp_in_coord(s, &bounds->left, False);
    else if (present & 16)
        rdp_in_coord(s, &bounds->left, True);

    if (present & 2)
        rdp_in_coord(s, &bounds->top, False);
    else if (present & 32)
        rdp_in_coord(s, &bounds->top, True);

    if (present & 4)
        rdp_in_coord(s, &bounds->right, False);
    else if (present & 64)
        rdp_in_coord(s, &bounds->right, True);

    if (present & 8)
        rdp_in_coord(s, &bounds->bottom, False);
    else if (present & 128)
        rdp_in_coord(s, &bounds->bottom, True);

    return s_check(s);
}

/* Parse a pen */
static RD_BOOL
rdp_parse_pen(STREAM s, PEN * pen, uint32 present)
{
    if (present & 1)
        in_uint8(s, pen->style);

    if (present & 2)
        in_uint8(s, pen->width);

    if (present & 4)
        rdp_in_colour(s, &pen->colour);

    return s_check(s);
}

static void
setup_brush(BRUSH * out_brush, BRUSH * in_brush)
{
    BRUSHDATA *brush_data;
    uint8 cache_idx;
    uint8 colour_code;

    memcpy(out_brush, in_brush, sizeof(BRUSH));
    if (out_brush->style & 0x80)
    {
        colour_code = out_brush->style & 0x0f;
        cache_idx = out_brush->pattern[0];
        brush_data = cache_get_brush_data(colour_code, cache_idx);
        if ((brush_data == NULL) || (brush_data->data == NULL))
        {
            error("error getting brush data, style %x\n", out_brush->style);
            out_brush->bd = NULL;
            memset(out_brush->pattern, 0, 8);
        }
        else
        {
            out_brush->bd = brush_data;
        }
        out_brush->style = 3;
    }
}

/* Parse a brush */
static RD_BOOL
rdp_parse_brush(STREAM s, BRUSH * brush, uint32 present)
{
    if (present & 1)
        in_uint8(s, brush->xorigin);

    if (present & 2)
        in_uint8(s, brush->yorigin);

    if (present & 4)
        in_uint8(s, brush->style);

    if (present & 8)
        in_uint8(s, brush->pattern[0]);

    if (present & 16)
        in_uint8a(s, &brush->pattern[1], 7);

    return s_check(s);
}

/* Process a destination blt order */
static void
process_destblt(STREAM s, DESTBLT_ORDER * os, uint32 present, RD_BOOL delta)
{
    if (present & 0x01)
        rdp_in_coord(s, &os->x, delta);

    if (present & 0x02)
        rdp_in_coord(s, &os->y, delta);

    if (present & 0x04)
        rdp_in_coord(s, &os->cx, delta);

    if (present & 0x08)
        rdp_in_coord(s, &os->cy, delta);

    if (present & 0x10)
        in_uint8(s, os->opcode);

    DEBUG(("DESTBLT(op=0x%x,x=%d,y=%d,cx=%d,cy=%d)\n",
           os->opcode, os->x, os->y, os->cx, os->cy));

    ui_destblt(ROP2_S(os->opcode), os->x, os->y, os->cx, os->cy);
}

/* Process a pattern blt order */
static void
process_patblt(STREAM s, PATBLT_ORDER * os, uint32 present, RD_BOOL delta)
{
    BRUSH brush;

    if (present & 0x0001)
        rdp_in_coord(s, &os->x, delta);

    if (present & 0x0002)
        rdp_in_coord(s, &os->y, delta);

    if (present & 0x0004)
        rdp_in_coord(s, &os->cx, delta);

    if (present & 0x0008)
        rdp_in_coord(s, &os->cy, delta);

    if (present & 0x0010)
        in_uint8(s, os->opcode);

    if (present & 0x0020)
        rdp_in_colour(s, &os->bgcolour);

    if (present & 0x0040)
        rdp_in_colour(s, &os->fgcolour);

    rdp_parse_brush(s, &os->brush, present >> 7);

    DEBUG(("PATBLT(op=0x%x,x=%d,y=%d,cx=%d,cy=%d,bs=%d,bg=0x%x,fg=0x%x)\n", os->opcode, os->x,
           os->y, os->cx, os->cy, os->brush.style, os->bgcolour, os->fgcolour));

    setup_brush(&brush, &os->brush);

    ui_patblt(ROP2_P(os->opcode), os->x, os->y, os->cx, os->cy,
          &brush, os->bgcolour, os->fgcolour);
}

/* Process a screen blt order */
static void
process_screenblt(STREAM s, SCREENBLT_ORDER * os, uint32 present, RD_BOOL delta)
{
    if (present & 0x0001)
        rdp_in_coord(s, &os->x, delta);

    if (present & 0x0002)
        rdp_in_coord(s, &os->y, delta);

    if (present & 0x0004)
        rdp_in_coord(s, &os->cx, delta);

    if (present & 0x0008)
        rdp_in_coord(s, &os->cy, delta);

    if (present & 0x0010)
        in_uint8(s, os->opcode);

    if (present & 0x0020)
        rdp_in_coord(s, &os->srcx, delta);

    if (present & 0x0040)
        rdp_in_coord(s, &os->srcy, delta);

    DEBUG(("SCREENBLT(op=0x%x,x=%d,y=%d,cx=%d,cy=%d,srcx=%d,srcy=%d)\n",
           os->opcode, os->x, os->y, os->cx, os->cy, os->srcx, os->srcy));

    ui_screenblt(ROP2_S(os->opcode), os->x, os->y, os->cx, os->cy, os->srcx, os->srcy);
}

/* Process a line order */
static void
process_line(STREAM s, LINE_ORDER * os, uint32 present, RD_BOOL delta)
{
    if (present & 0x0001)
        in_uint16_le(s, os->mixmode);

    if (present & 0x0002)
        rdp_in_coord(s, &os->startx, delta);

    if (present & 0x0004)
        rdp_in_coord(s, &os->starty, delta);

    if (present & 0x0008)
        rdp_in_coord(s, &os->endx, delta);

    if (present & 0x0010)
        rdp_in_coord(s, &os->endy, delta);

    if (present & 0x0020)
        rdp_in_colour(s, &os->bgcolour);

    if (present & 0x0040)
        in_uint8(s, os->opcode);

    rdp_parse_pen(s, &os->pen, present >> 7);

    DEBUG(("LINE(op=0x%x,sx=%d,sy=%d,dx=%d,dy=%d,fg=0x%x)\n",
           os->opcode, os->startx, os->starty, os->endx, os->endy, os->pen.colour));

    if (os->opcode < 0x01 || os->opcode > 0x10)
    {
        error("bad ROP2 0x%x\n", os->opcode);
        return;
    }

    ui_line(os->opcode - 1, os->startx, os->starty, os->endx, os->endy, &os->pen);
}

/* Process an opaque rectangle order */
static void
process_rect(STREAM s, RECT_ORDER * os, uint32 present, RD_BOOL delta)
{
    uint32 i;
    if (present & 0x01)
        rdp_in_coord(s, &os->x, delta);

    if (present & 0x02)
        rdp_in_coord(s, &os->y, delta);

    if (present & 0x04)
        rdp_in_coord(s, &os->cx, delta);

    if (present & 0x08)
        rdp_in_coord(s, &os->cy, delta);

    if (present & 0x10)
    {
        in_uint8(s, i);
        os->colour = (os->colour & 0xffffff00) | i;
    }

    if (present & 0x20)
    {
        in_uint8(s, i);
        os->colour = (os->colour & 0xffff00ff) | (i << 8);
    }

    if (present & 0x40)
    {
        in_uint8(s, i);
        os->colour = (os->colour & 0xff00ffff) | (i << 16);
    }

    DEBUG(("RECT(x=%d,y=%d,cx=%d,cy=%d,fg=0x%x)\n", os->x, os->y, os->cx, os->cy, os->colour));

    ui_rect(os->x, os->y, os->cx, os->cy, os->colour);
}

/* Process a desktop save order */
static void
process_desksave(STREAM s, DESKSAVE_ORDER * os, uint32 present, RD_BOOL delta)
{
    int width, height;

    if (present & 0x01)
        in_uint32_le(s, os->offset);

    if (present & 0x02)
        rdp_in_coord(s, &os->left, delta);

    if (present & 0x04)
        rdp_in_coord(s, &os->top, delta);

    if (present & 0x08)
        rdp_in_coord(s, &os->right, delta);

    if (present & 0x10)
        rdp_in_coord(s, &os->bottom, delta);

    if (present & 0x20)
        in_uint8(s, os->action);

    DEBUG(("DESKSAVE(l=%d,t=%d,r=%d,b=%d,off=%d,op=%d)\n",
           os->left, os->top, os->right, os->bottom, os->offset, os->action));

    width = os->right - os->left + 1;
    height = os->bottom - os->top + 1;

    if (os->action == 0)
        ui_desktop_save(os->offset, os->left, os->top, width, height);
    else
        ui_desktop_restore(os->offset, os->left, os->top, width, height);
}

/* Process a memory blt order */
static void
process_memblt(STREAM s, MEMBLT_ORDER * os, uint32 present, RD_BOOL delta)
{
    RD_HBITMAP bitmap;

    if (present & 0x0001)
    {
        in_uint8(s, os->cache_id);
        in_uint8(s, os->colour_table);
    }

    if (present & 0x0002)
        rdp_in_coord(s, &os->x, delta);

    if (present & 0x0004)
        rdp_in_coord(s, &os->y, delta);

    if (present & 0x0008)
        rdp_in_coord(s, &os->cx, delta);

    if (present & 0x0010)
        rdp_in_coord(s, &os->cy, delta);

    if (present & 0x0020)
        in_uint8(s, os->opcode);

    if (present & 0x0040)
        rdp_in_coord(s, &os->srcx, delta);

    if (present & 0x0080)
        rdp_in_coord(s, &os->srcy, delta);

    if (present & 0x0100)
        in_uint16_le(s, os->cache_idx);

    DEBUG(("MEMBLT(op=0x%x,x=%d,y=%d,cx=%d,cy=%d,id=%d,idx=%d)\n",
           os->opcode, os->x, os->y, os->cx, os->cy, os->cache_id, os->cache_idx));

    bitmap = cache_get_bitmap(os->cache_id, os->cache_idx);
    if (bitmap == NULL)
        return;

    ui_memblt(ROP2_S(os->opcode), os->x, os->y, os->cx, os->cy, bitmap, os->srcx, os->srcy);
}

/* Process a 3-way blt order */
static void
process_triblt(STREAM s, TRIBLT_ORDER * os, uint32 present, RD_BOOL delta)
{
    RD_HBITMAP bitmap;
    BRUSH brush;

    if (present & 0x000001)
    {
        in_uint8(s, os->cache_id);
        in_uint8(s, os->colour_table);
    }

    if (present & 0x000002)
        rdp_in_coord(s, &os->x, delta);

    if (present & 0x000004)
        rdp_in_coord(s, &os->y, delta);

    if (present & 0x000008)
        rdp_in_coord(s, &os->cx, delta);

    if (present & 0x000010)
        rdp_in_coord(s, &os->cy, delta);

    if (present & 0x000020)
        in_uint8(s, os->opcode);

    if (present & 0x000040)
        rdp_in_coord(s, &os->srcx, delta);

    if (present & 0x000080)
        rdp_in_coord(s, &os->srcy, delta);

    if (present & 0x000100)
        rdp_in_colour(s, &os->bgcolour);

    if (present & 0x000200)
        rdp_in_colour(s, &os->fgcolour);

    rdp_parse_brush(s, &os->brush, present >> 10);

    if (present & 0x008000)
        in_uint16_le(s, os->cache_idx);

    if (present & 0x010000)
        in_uint16_le(s, os->unknown);

    DEBUG(("TRIBLT(op=0x%x,x=%d,y=%d,cx=%d,cy=%d,id=%d,idx=%d,bs=%d,bg=0x%x,fg=0x%x)\n",
           os->opcode, os->x, os->y, os->cx, os->cy, os->cache_id, os->cache_idx,
           os->brush.style, os->bgcolour, os->fgcolour));

    bitmap = cache_get_bitmap(os->cache_id, os->cache_idx);
    if (bitmap == NULL)
        return;

    setup_brush(&brush, &os->brush);

    ui_triblt(os->opcode, os->x, os->y, os->cx, os->cy,
          bitmap, os->srcx, os->srcy, &brush, os->bgcolour, os->fgcolour);
}

/* Process a polygon order */
static void
process_polygon(STREAM s, POLYGON_ORDER * os, uint32 present, RD_BOOL delta)
{
    int index, data, next;
    uint8 flags = 0;
    RD_POINT *points;

    if (present & 0x01)
        rdp_in_coord(s, &os->x, delta);

    if (present & 0x02)
        rdp_in_coord(s, &os->y, delta);

    if (present & 0x04)
        in_uint8(s, os->opcode);

    if (present & 0x08)
        in_uint8(s, os->fillmode);

    if (present & 0x10)
        rdp_in_colour(s, &os->fgcolour);

    if (present & 0x20)
        in_uint8(s, os->npoints);

    if (present & 0x40)
    {
        in_uint8(s, os->datasize);
        in_uint8a(s, os->data, os->datasize);
    }

    DEBUG(("POLYGON(x=%d,y=%d,op=0x%x,fm=%d,fg=0x%x,n=%d,sz=%d)\n",
           os->x, os->y, os->opcode, os->fillmode, os->fgcolour, os->npoints, os->datasize));

    DEBUG(("Data: "));

    for (index = 0; index < os->datasize; index++)
        DEBUG(("%02x ", os->data[index]));

    DEBUG(("\n"));

    if (os->opcode < 0x01 || os->opcode > 0x10)
    {
        error("bad ROP2 0x%x\n", os->opcode);
        return;
    }

    points = (RD_POINT *) xmalloc((os->npoints + 1) * sizeof(RD_POINT));
    memset(points, 0, (os->npoints + 1) * sizeof(RD_POINT));

    points[0].x = os->x;
    points[0].y = os->y;

    index = 0;
    data = ((os->npoints - 1) / 4) + 1;
    for (next = 1; (next <= os->npoints) && (next < 256) && (data < os->datasize); next++)
    {
        if ((next - 1) % 4 == 0)
            flags = os->data[index++];

        if (~flags & 0x80)
            points[next].x = parse_delta(os->data, &data);

        if (~flags & 0x40)
            points[next].y = parse_delta(os->data, &data);

        flags <<= 2;
    }

    if (next - 1 == os->npoints)
        ui_polygon(os->opcode - 1, os->fillmode, points, os->npoints + 1, NULL, 0,
               os->fgcolour);
    else
        error("polygon parse error\n");

    xfree(points);
}

/* Process a polygon2 order */
static void
process_polygon2(STREAM s, POLYGON2_ORDER * os, uint32 present, RD_BOOL delta)
{
    int index, data, next;
    uint8 flags = 0;
    RD_POINT *points;
    BRUSH brush;

    if (present & 0x0001)
        rdp_in_coord(s, &os->x, delta);

    if (present & 0x0002)
        rdp_in_coord(s, &os->y, delta);

    if (present & 0x0004)
        in_uint8(s, os->opcode);

    if (present & 0x0008)
        in_uint8(s, os->fillmode);

    if (present & 0x0010)
        rdp_in_colour(s, &os->bgcolour);

    if (present & 0x0020)
        rdp_in_colour(s, &os->fgcolour);

    rdp_parse_brush(s, &os->brush, present >> 6);

    if (present & 0x0800)
        in_uint8(s, os->npoints);

    if (present & 0x1000)
    {
        in_uint8(s, os->datasize);
        in_uint8a(s, os->data, os->datasize);
    }

    DEBUG(("POLYGON2(x=%d,y=%d,op=0x%x,fm=%d,bs=%d,bg=0x%x,fg=0x%x,n=%d,sz=%d)\n",
           os->x, os->y, os->opcode, os->fillmode, os->brush.style, os->bgcolour, os->fgcolour,
           os->npoints, os->datasize));

    DEBUG(("Data: "));

    for (index = 0; index < os->datasize; index++)
        DEBUG(("%02x ", os->data[index]));

    DEBUG(("\n"));

    if (os->opcode < 0x01 || os->opcode > 0x10)
    {
        error("bad ROP2 0x%x\n", os->opcode);
        return;
    }

    setup_brush(&brush, &os->brush);

    points = (RD_POINT *) xmalloc((os->npoints + 1) * sizeof(RD_POINT));
    memset(points, 0, (os->npoints + 1) * sizeof(RD_POINT));

    points[0].x = os->x;
    points[0].y = os->y;

    index = 0;
    data = ((os->npoints - 1) / 4) + 1;
    for (next = 1; (next <= os->npoints) && (next < 256) && (data < os->datasize); next++)
    {
        if ((next - 1) % 4 == 0)
            flags = os->data[index++];

        if (~flags & 0x80)
            points[next].x = parse_delta(os->data, &data);

        if (~flags & 0x40)
            points[next].y = parse_delta(os->data, &data);

        flags <<= 2;
    }

    if (next - 1 == os->npoints)
        ui_polygon(os->opcode - 1, os->fillmode, points, os->npoints + 1,
               &brush, os->bgcolour, os->fgcolour);
    else
        error("polygon2 parse error\n");

    xfree(points);
}

/* Process a polyline order */
static void
process_polyline(STREAM s, POLYLINE_ORDER * os, uint32 present, RD_BOOL delta)
{
    int index, next, data;
    uint8 flags = 0;
    PEN pen;
    RD_POINT *points;

    if (present & 0x01)
        rdp_in_coord(s, &os->x, delta);

    if (present & 0x02)
        rdp_in_coord(s, &os->y, delta);

    if (present & 0x04)
        in_uint8(s, os->opcode);

    if (present & 0x10)
        rdp_in_colour(s, &os->fgcolour);

    if (present & 0x20)
        in_uint8(s, os->lines);

    if (present & 0x40)
    {
        in_uint8(s, os->datasize);
        in_uint8a(s, os->data, os->datasize);
    }

    DEBUG(("POLYLINE(x=%d,y=%d,op=0x%x,fg=0x%x,n=%d,sz=%d)\n",
           os->x, os->y, os->opcode, os->fgcolour, os->lines, os->datasize));

    DEBUG(("Data: "));

    for (index = 0; index < os->datasize; index++)
        DEBUG(("%02x ", os->data[index]));

    DEBUG(("\n"));

    if (os->opcode < 0x01 || os->opcode > 0x10)
    {
        error("bad ROP2 0x%x\n", os->opcode);
        return;
    }

    points = (RD_POINT *) xmalloc((os->lines + 1) * sizeof(RD_POINT));
    memset(points, 0, (os->lines + 1) * sizeof(RD_POINT));

    points[0].x = os->x;
    points[0].y = os->y;
    pen.style = pen.width = 0;
    pen.colour = os->fgcolour;

    index = 0;
    data = ((os->lines - 1) / 4) + 1;
    for (next = 1; (next <= os->lines) && (data < os->datasize); next++)
    {
        if ((next - 1) % 4 == 0)
            flags = os->data[index++];

        if (~flags & 0x80)
            points[next].x = parse_delta(os->data, &data);

        if (~flags & 0x40)
            points[next].y = parse_delta(os->data, &data);

        flags <<= 2;
    }

    if (next - 1 == os->lines)
        ui_polyline(os->opcode - 1, points, os->lines + 1, &pen);
    else
        error("polyline parse error\n");

    xfree(points);
}

/* Process an ellipse order */
static void
process_ellipse(STREAM s, ELLIPSE_ORDER * os, uint32 present, RD_BOOL delta)
{
    if (present & 0x01)
        rdp_in_coord(s, &os->left, delta);

    if (present & 0x02)
        rdp_in_coord(s, &os->top, delta);

    if (present & 0x04)
        rdp_in_coord(s, &os->right, delta);

    if (present & 0x08)
        rdp_in_coord(s, &os->bottom, delta);

    if (present & 0x10)
        in_uint8(s, os->opcode);

    if (present & 0x20)
        in_uint8(s, os->fillmode);

    if (present & 0x40)
        rdp_in_colour(s, &os->fgcolour);

    DEBUG(("ELLIPSE(l=%d,t=%d,r=%d,b=%d,op=0x%x,fm=%d,fg=0x%x)\n", os->left, os->top,
           os->right, os->bottom, os->opcode, os->fillmode, os->fgcolour));

    ui_ellipse(os->opcode - 1, os->fillmode, os->left, os->top, os->right - os->left,
           os->bottom - os->top, NULL, 0, os->fgcolour);
}

/* Process an ellipse2 order */
static void
process_ellipse2(STREAM s, ELLIPSE2_ORDER * os, uint32 present, RD_BOOL delta)
{
    BRUSH brush;

    if (present & 0x0001)
        rdp_in_coord(s, &os->left, delta);

    if (present & 0x0002)
        rdp_in_coord(s, &os->top, delta);

    if (present & 0x0004)
        rdp_in_coord(s, &os->right, delta);

    if (present & 0x0008)
        rdp_in_coord(s, &os->bottom, delta);

    if (present & 0x0010)
        in_uint8(s, os->opcode);

    if (present & 0x0020)
        in_uint8(s, os->fillmode);

    if (present & 0x0040)
        rdp_in_colour(s, &os->bgcolour);

    if (present & 0x0080)
        rdp_in_colour(s, &os->fgcolour);

    rdp_parse_brush(s, &os->brush, present >> 8);

    DEBUG(("ELLIPSE2(l=%d,t=%d,r=%d,b=%d,op=0x%x,fm=%d,bs=%d,bg=0x%x,fg=0x%x)\n",
           os->left, os->top, os->right, os->bottom, os->opcode, os->fillmode, os->brush.style,
           os->bgcolour, os->fgcolour));

    setup_brush(&brush, &os->brush);

    ui_ellipse(os->opcode - 1, os->fillmode, os->left, os->top, os->right - os->left,
           os->bottom - os->top, &brush, os->bgcolour, os->fgcolour);
}

/* Process a text order */
static void
process_text2(STREAM s, TEXT2_ORDER * os, uint32 present, RD_BOOL delta)
{
    int i;
    BRUSH brush;

    if (present & 0x000001)
        in_uint8(s, os->font);

    if (present & 0x000002)
        in_uint8(s, os->flags);

    if (present & 0x000004)
        in_uint8(s, os->opcode);

    if (present & 0x000008)
        in_uint8(s, os->mixmode);

    if (present & 0x000010)
        rdp_in_colour(s, &os->fgcolour);

    if (present & 0x000020)
        rdp_in_colour(s, &os->bgcolour);

    if (present & 0x000040)
        in_uint16_le(s, os->clipleft);

    if (present & 0x000080)
        in_uint16_le(s, os->cliptop);

    if (present & 0x000100)
        in_uint16_le(s, os->clipright);

    if (present & 0x000200)
        in_uint16_le(s, os->clipbottom);

    if (present & 0x000400)
        in_uint16_le(s, os->boxleft);

    if (present & 0x000800)
        in_uint16_le(s, os->boxtop);

    if (present & 0x001000)
        in_uint16_le(s, os->boxright);

    if (present & 0x002000)
        in_uint16_le(s, os->boxbottom);

    rdp_parse_brush(s, &os->brush, present >> 14);

    if (present & 0x080000)
        in_uint16_le(s, os->x);

    if (present & 0x100000)
        in_uint16_le(s, os->y);

    if (present & 0x200000)
    {
        in_uint8(s, os->length);
        in_uint8a(s, os->text, os->length);
    }

    DEBUG(("TEXT2(x=%d,y=%d,cl=%d,ct=%d,cr=%d,cb=%d,bl=%d,bt=%d,br=%d,bb=%d,bs=%d,bg=0x%x,fg=0x%x,font=%d,fl=0x%x,op=0x%x,mix=%d,n=%d)\n", os->x, os->y, os->clipleft, os->cliptop, os->clipright, os->clipbottom, os->boxleft, os->boxtop, os->boxright, os->boxbottom, os->brush.style, os->bgcolour, os->fgcolour, os->font, os->flags, os->opcode, os->mixmode, os->length));

    DEBUG(("Text: "));

    for (i = 0; i < os->length; i++)
        DEBUG(("%02x ", os->text[i]));

    DEBUG(("\n"));

    setup_brush(&brush, &os->brush);

    ui_draw_text(os->font, os->flags, os->opcode - 1, os->mixmode, os->x, os->y,
             os->clipleft, os->cliptop, os->clipright - os->clipleft,
             os->clipbottom - os->cliptop, os->boxleft, os->boxtop,
             os->boxright - os->boxleft, os->boxbottom - os->boxtop,
             &brush, os->bgcolour, os->fgcolour, os->text, os->length);
}

/* Process a raw bitmap cache order */
static void
process_raw_bmpcache(STREAM s)
{
    RD_HBITMAP bitmap;
    uint16 cache_idx, bufsize;
    uint8 cache_id, width, height, bpp, Bpp;
    uint8 *data, *inverted;
    int y;

    in_uint8(s, cache_id);
    in_uint8s(s, 1);    /* pad */
    in_uint8(s, width);
    in_uint8(s, height);
    in_uint8(s, bpp);
    Bpp = (bpp + 7) / 8;
    in_uint16_le(s, bufsize);
    in_uint16_le(s, cache_idx);
    in_uint8p(s, data, bufsize);

    DEBUG(("RAW_BMPCACHE(cx=%d,cy=%d,id=%d,idx=%d)\n", width, height, cache_id, cache_idx));
    inverted = (uint8 *) xmalloc(width * height * Bpp);
    for (y = 0; y < height; y++)
    {
        memcpy(&inverted[(height - y - 1) * (width * Bpp)], &data[y * (width * Bpp)],
               width * Bpp);
    }

    bitmap = ui_create_bitmap(width, height, inverted);
    xfree(inverted);
    cache_put_bitmap(cache_id, cache_idx, bitmap);
}

/* Process a bitmap cache order */
static void
process_bmpcache(STREAM s)
{
    RD_HBITMAP bitmap;
    uint16 cache_idx, size;
    uint8 cache_id, width, height, bpp, Bpp;
    uint8 *data, *bmpdata;
    uint16 bufsize, pad2, row_size, final_size;
    uint8 pad1;

    pad2 = row_size = final_size = 0xffff;  /* Shut the compiler up */

    in_uint8(s, cache_id);
    in_uint8(s, pad1);  /* pad */
    in_uint8(s, width);
    in_uint8(s, height);
    in_uint8(s, bpp);
    Bpp = (bpp + 7) / 8;
    in_uint16_le(s, bufsize);   /* bufsize */
    in_uint16_le(s, cache_idx);

    if (g_rdp_version >= RDP_V5)
    {
        size = bufsize;
    }
    else
    {

        /* Begin compressedBitmapData */
        in_uint16_le(s, pad2);  /* pad */
        in_uint16_le(s, size);
        /*      in_uint8s(s, 4);  *//* row_size, final_size */
        in_uint16_le(s, row_size);
        in_uint16_le(s, final_size);

    }
    in_uint8p(s, data, size);

    DEBUG(("BMPCACHE(cx=%d,cy=%d,id=%d,idx=%d,bpp=%d,size=%d,pad1=%d,bufsize=%d,pad2=%d,rs=%d,fs=%d)\n", width, height, cache_id, cache_idx, bpp, size, pad1, bufsize, pad2, row_size, final_size));

    bmpdata = (uint8 *) xmalloc(width * height * Bpp);

    if (bitmap_decompress(bmpdata, width, height, data, size, Bpp))
    {
        bitmap = ui_create_bitmap(width, height, bmpdata);
        cache_put_bitmap(cache_id, cache_idx, bitmap);
    }
    else
    {
        DEBUG(("Failed to decompress bitmap data\n"));
    }

    xfree(bmpdata);
}

/* Process a bitmap cache v2 order */
static void
process_bmpcache2(STREAM s, uint16 flags, RD_BOOL compressed)
{
    RD_HBITMAP bitmap;
    int y;
    uint8 cache_id, cache_idx_low, width, height, Bpp;
    uint16 cache_idx, bufsize;
    uint8 *data, *bmpdata, *bitmap_id;

    bitmap_id = NULL;   /* prevent compiler warning */
    cache_id = flags & ID_MASK;
    Bpp = ((flags & MODE_MASK) >> MODE_SHIFT) - 2;

    if (flags & PERSIST)
    {
        in_uint8p(s, bitmap_id, 8);
    }

    if (flags & SQUARE)
    {
        in_uint8(s, width);
        height = width;
    }
    else
    {
        in_uint8(s, width);
        in_uint8(s, height);
    }

    in_uint16_be(s, bufsize);
    bufsize &= BUFSIZE_MASK;
    in_uint8(s, cache_idx);

    if (cache_idx & LONG_FORMAT)
    {
        in_uint8(s, cache_idx_low);
        cache_idx = ((cache_idx ^ LONG_FORMAT) << 8) + cache_idx_low;
    }

    in_uint8p(s, data, bufsize);

    DEBUG(("BMPCACHE2(compr=%d,flags=%x,cx=%d,cy=%d,id=%d,idx=%d,Bpp=%d,bs=%d)\n",
           compressed, flags, width, height, cache_id, cache_idx, Bpp, bufsize));

    bmpdata = (uint8 *) xmalloc(width * height * Bpp);

    if (compressed)
    {
        if (!bitmap_decompress(bmpdata, width, height, data, bufsize, Bpp))
        {
            DEBUG(("Failed to decompress bitmap data\n"));
            xfree(bmpdata);
            return;
        }
    }
    else
    {
        for (y = 0; y < height; y++)
            memcpy(&bmpdata[(height - y - 1) * (width * Bpp)],
                   &data[y * (width * Bpp)], width * Bpp);
    }

    bitmap = ui_create_bitmap(width, height, bmpdata);

    if (bitmap)
    {
        cache_put_bitmap(cache_id, cache_idx, bitmap);
        if (flags & PERSIST)
            pstcache_save_bitmap(cache_id, cache_idx, bitmap_id, width, height,
                         width * height * Bpp, bmpdata);
    }
    else
    {
        DEBUG(("process_bmpcache2: ui_create_bitmap failed\n"));
    }

    xfree(bmpdata);
}

/* Process a colourmap cache order */
static void
process_colcache(STREAM s)
{
    COLOURENTRY *entry;
    COLOURMAP map;
    RD_HCOLOURMAP hmap;
    uint8 cache_id;
    int i;

    in_uint8(s, cache_id);
    in_uint16_le(s, map.ncolours);

    map.colours = (COLOURENTRY *) xmalloc(sizeof(COLOURENTRY) * map.ncolours);

    for (i = 0; i < map.ncolours; i++)
    {
        entry = &map.colours[i];
        in_uint8(s, entry->blue);
        in_uint8(s, entry->green);
        in_uint8(s, entry->red);
        in_uint8s(s, 1);    /* pad */
    }

    DEBUG(("COLCACHE(id=%d,n=%d)\n", cache_id, map.ncolours));

    hmap = ui_create_colourmap(&map);

    if (cache_id)
        ui_set_colourmap(hmap);

    xfree(map.colours);
}

/* Process a font cache order */
static void
process_fontcache(STREAM s)
{
    RD_HGLYPH bitmap;
    uint8 font, nglyphs;
    uint16 character, offset, baseline, width, height;
    int i, datasize;
    uint8 *data;

    in_uint8(s, font);
    in_uint8(s, nglyphs);

    DEBUG(("FONTCACHE(font=%d,n=%d)\n", font, nglyphs));

    for (i = 0; i < nglyphs; i++)
    {
        in_uint16_le(s, character);
        in_uint16_le(s, offset);
        in_uint16_le(s, baseline);
        in_uint16_le(s, width);
        in_uint16_le(s, height);

        datasize = (height * ((width + 7) / 8) + 3) & ~3;
        in_uint8p(s, data, datasize);

        bitmap = ui_create_glyph(width, height, data);
        cache_put_font(font, character, offset, baseline, width, height, bitmap);
    }
}

static void
process_compressed_8x8_brush_data(uint8 * in, uint8 * out, int Bpp)
{
    int x, y, pal_index, in_index, shift, do2, i;
    uint8 *pal;

    in_index = 0;
    pal = in + 16;
    /* read it bottom up */
    for (y = 7; y >= 0; y--)
    {
        /* 2 bytes per row */
        x = 0;
        for (do2 = 0; do2 < 2; do2++)
        {
            /* 4 pixels per byte */
            shift = 6;
            while (shift >= 0)
            {
                pal_index = (in[in_index] >> shift) & 3;
                /* size of palette entries depends on Bpp */
                for (i = 0; i < Bpp; i++)
                {
                    out[(y * 8 + x) * Bpp + i] = pal[pal_index * Bpp + i];
                }
                x++;
                shift -= 2;
            }
            in_index++;
        }
    }
}

/* Process a brush cache order */
static void
process_brushcache(STREAM s, uint16 flags)
{
    BRUSHDATA brush_data;
    uint8 cache_idx, colour_code, width, height, size, type;
    uint8 *comp_brush;
    int index;
    int Bpp;

    in_uint8(s, cache_idx);
    in_uint8(s, colour_code);
    in_uint8(s, width);
    in_uint8(s, height);
    in_uint8(s, type);  /* type, 0x8x = cached */
    in_uint8(s, size);

    DEBUG(("BRUSHCACHE(idx=%d,wd=%d,ht=%d,sz=%d)\n", cache_idx, width, height, size));

    if ((width == 8) && (height == 8))
    {
        if (colour_code == 1)
        {
            brush_data.colour_code = 1;
            brush_data.data_size = 8;
            brush_data.data = xmalloc(8);
            if (size == 8)
            {
                /* read it bottom up */
                for (index = 7; index >= 0; index--)
                {
                    in_uint8(s, brush_data.data[index]);
                }
            }
            else
            {
                warning("incompatible brush, colour_code %d size %d\n", colour_code,
                    size);
            }
            cache_put_brush_data(1, cache_idx, &brush_data);
        }
        else if ((colour_code >= 3) && (colour_code <= 6))
        {
            Bpp = colour_code - 2;
            brush_data.colour_code = colour_code;
            brush_data.data_size = 8 * 8 * Bpp;
            brush_data.data = xmalloc(8 * 8 * Bpp);
            if (size == 16 + 4 * Bpp)
            {
                in_uint8p(s, comp_brush, 16 + 4 * Bpp);
                process_compressed_8x8_brush_data(comp_brush, brush_data.data, Bpp);
            }
            else
            {
                in_uint8a(s, brush_data.data, 8 * 8 * Bpp);
            }
            cache_put_brush_data(colour_code, cache_idx, &brush_data);
        }
        else
        {
            warning("incompatible brush, colour_code %d size %d\n", colour_code, size);
        }
    }
    else
    {
        warning("incompatible brush, width height %d %d\n", width, height);
    }
}

/* Process a secondary order */
static void
process_secondary_order(STREAM s)
{
    /* The length isn't calculated correctly by the server.
     * For very compact orders the length becomes negative
     * so a signed integer must be used. */
    uint16 length;
    uint16 flags;
    uint8 type;
    uint8 *next_order;

    in_uint16_le(s, length);
    in_uint16_le(s, flags); /* used by bmpcache2 */
    in_uint8(s, type);

    next_order = s->p + (sint16) length + 7;

    switch (type)
    {
        case RDP_ORDER_RAW_BMPCACHE:
            process_raw_bmpcache(s);
            break;

        case RDP_ORDER_COLCACHE:
            process_colcache(s);
            break;

        case RDP_ORDER_BMPCACHE:
            process_bmpcache(s);
            break;

        case RDP_ORDER_FONTCACHE:
            process_fontcache(s);
            break;

        case RDP_ORDER_RAW_BMPCACHE2:
            process_bmpcache2(s, flags, False); /* uncompressed */
            break;

        case RDP_ORDER_BMPCACHE2:
            process_bmpcache2(s, flags, True);  /* compressed */
            break;

        case RDP_ORDER_BRUSHCACHE:
            process_brushcache(s, flags);
            break;

        default:
            unimpl("secondary order %d\n", type);
    }

    s->p = next_order;
}

/* Process an order PDU */
void
process_orders(STREAM s, uint16 num_orders)
{
    RDP_ORDER_STATE *os = &g_order_state;
    uint32 present;
    uint8 order_flags;
    int size, processed = 0;
    RD_BOOL delta;

    while (processed < num_orders)
    {
        in_uint8(s, order_flags);

        if (!(order_flags & RDP_ORDER_STANDARD))
        {
            error("order parsing failed\n");
            break;
        }

        if (order_flags & RDP_ORDER_SECONDARY)
        {
            process_secondary_order(s);
        }
        else
        {
            if (order_flags & RDP_ORDER_CHANGE)
            {
                in_uint8(s, os->order_type);
            }

            switch (os->order_type)
            {
                case RDP_ORDER_TRIBLT:
                case RDP_ORDER_TEXT2:
                    size = 3;
                    break;

                case RDP_ORDER_PATBLT:
                case RDP_ORDER_MEMBLT:
                case RDP_ORDER_LINE:
                case RDP_ORDER_POLYGON2:
                case RDP_ORDER_ELLIPSE2:
                    size = 2;
                    break;

                default:
                    size = 1;
            }

            rdp_in_present(s, &present, order_flags, size);

            if (order_flags & RDP_ORDER_BOUNDS)
            {
                if (!(order_flags & RDP_ORDER_LASTBOUNDS))
                    rdp_parse_bounds(s, &os->bounds);

                ui_set_clip(os->bounds.left,
                        os->bounds.top,
                        os->bounds.right -
                        os->bounds.left + 1,
                        os->bounds.bottom - os->bounds.top + 1);
            }

            delta = order_flags & RDP_ORDER_DELTA;

            switch (os->order_type)
            {
                case RDP_ORDER_DESTBLT:
                    process_destblt(s, &os->destblt, present, delta);
                    break;

                case RDP_ORDER_PATBLT:
                    process_patblt(s, &os->patblt, present, delta);
                    break;

                case RDP_ORDER_SCREENBLT:
                    process_screenblt(s, &os->screenblt, present, delta);
                    break;

                case RDP_ORDER_LINE:
                    process_line(s, &os->line, present, delta);
                    break;

                case RDP_ORDER_RECT:
                    process_rect(s, &os->rect, present, delta);
                    break;

                case RDP_ORDER_DESKSAVE:
                    process_desksave(s, &os->desksave, present, delta);
                    break;

                case RDP_ORDER_MEMBLT:
                    process_memblt(s, &os->memblt, present, delta);
                    break;

                case RDP_ORDER_TRIBLT:
                    process_triblt(s, &os->triblt, present, delta);
                    break;

                case RDP_ORDER_POLYGON:
                    process_polygon(s, &os->polygon, present, delta);
                    break;

                case RDP_ORDER_POLYGON2:
                    process_polygon2(s, &os->polygon2, present, delta);
                    break;

                case RDP_ORDER_POLYLINE:
                    process_polyline(s, &os->polyline, present, delta);
                    break;

                case RDP_ORDER_ELLIPSE:
                    process_ellipse(s, &os->ellipse, present, delta);
                    break;

                case RDP_ORDER_ELLIPSE2:
                    process_ellipse2(s, &os->ellipse2, present, delta);
                    break;

                case RDP_ORDER_TEXT2:
                    process_text2(s, &os->text2, present, delta);
                    break;

                default:
                    unimpl("order %d\n", os->order_type);
                    return;
            }

            if (order_flags & RDP_ORDER_BOUNDS)
                ui_reset_clip();
        }

        processed++;
    }
#if 0
    /* not true when RDP_COMPRESSION is set */
    if (s->p != g_next_packet)
        error("%d bytes remaining\n", (int) (g_next_packet - s->p));
#endif

}

/* Reset order state */
void
reset_order_state(void)
{
    memset(&g_order_state, 0, sizeof(g_order_state));
    g_order_state.order_type = RDP_ORDER_PATBLT;
}