clipboard.c 69.1 KB
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/*
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 * X11 clipboard windows driver
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 *
 * Copyright 1994 Martin Ayotte
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 * Copyright 1996 Alex Korobka
 * Copyright 1999 Noel Borthwick
 * Copyright 2003 Ulrich Czekalla for CodeWeavers
 * Copyright 2014 Damjan Jovanovic
 * Copyright 2016 Alexandre Julliard
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 *
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 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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 *
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 * NOTES:
 *    This file contains the X specific implementation for the windows
 *    Clipboard API.
 *
 *    Wine's internal clipboard is exposed to external apps via the X
 *    selection mechanism.
 *    Currently the driver asserts ownership via two selection atoms:
 *    1. PRIMARY(XA_PRIMARY)
 *    2. CLIPBOARD
 *
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 *    In our implementation, the CLIPBOARD selection takes precedence over PRIMARY,
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 *    i.e. if a CLIPBOARD selection is available, it is used instead of PRIMARY.
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 *    When Wine takes ownership of the clipboard, it takes ownership of BOTH selections.
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 *    While giving up selection ownership, if the CLIPBOARD selection is lost,
 *    it will lose both PRIMARY and CLIPBOARD and empty the clipboard.
 *    However if only PRIMARY is lost, it will continue to hold the CLIPBOARD selection
 *    (leaving the clipboard cache content unaffected).
 *
 *      Every format exposed via a windows clipboard format is also exposed through
 *    a corresponding X selection target. A selection target atom is synthesized
 *    whenever a new Windows clipboard format is registered via RegisterClipboardFormat,
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 *    or when a built-in format is used for the first time.
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 *    Windows native format are exposed by prefixing the format name with "<WCF>"
 *    This allows us to uniquely identify windows native formats exposed by other
 *    running WINE apps.
 *
 *      In order to allow external applications to query WINE for supported formats,
 *    we respond to the "TARGETS" selection target. (See EVENT_SelectionRequest
 *    for implementation) We use the same mechanism to query external clients for
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 *    availability of a particular format, by caching the list of available targets
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 *    by using the clipboard cache's "delayed render" mechanism. If a selection client
 *    does not support the "TARGETS" selection target, we actually attempt to retrieve
 *    the format requested as a fallback mechanism.
 *
 *      Certain Windows native formats are automatically converted to X native formats
 *    and vice versa. If a native format is available in the selection, it takes
 *    precedence, in order to avoid unnecessary conversions.
 *
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 * FIXME: global format list needs a critical section
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 */

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#include "config.h"
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#include "wine/port.h"
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#include <string.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
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#include <fcntl.h>
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#include <limits.h>
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#include <time.h>
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#include <assert.h>
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#include "windef.h"
#include "winbase.h"
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#include "shlobj.h"
#include "shellapi.h"
#include "shlwapi.h"
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#include "x11drv.h"
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#include "wine/list.h"
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#include "wine/debug.h"
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#include "wine/unicode.h"
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WINE_DEFAULT_DEBUG_CHANNEL(clipboard);
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/* Maximum wait time for selection notify */
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#define SELECTION_RETRIES 500  /* wait for .5 seconds */
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#define SELECTION_WAIT    1000 /* us */
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#define SELECTION_UPDATE_DELAY 2000   /* delay between checks of the X11 selection */

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typedef BOOL (*EXPORTFUNC)( Display *display, Window win, Atom prop, Atom target, HANDLE handle );
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typedef HANDLE (*IMPORTFUNC)( Atom type, const void *data, size_t size );
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struct clipboard_format
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{
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    struct list entry;
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    UINT        id;
    Atom        atom;
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    IMPORTFUNC  import;
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    EXPORTFUNC  export;
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};
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static HANDLE import_data( Atom type, const void *data, size_t size );
static HANDLE import_enhmetafile( Atom type, const void *data, size_t size );
static HANDLE import_pixmap( Atom type, const void *data, size_t size );
static HANDLE import_image_bmp( Atom type, const void *data, size_t size );
static HANDLE import_string( Atom type, const void *data, size_t size );
static HANDLE import_utf8_string( Atom type, const void *data, size_t size );
static HANDLE import_compound_text( Atom type, const void *data, size_t size );
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static HANDLE import_text( Atom type, const void *data, size_t size );
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static HANDLE import_text_html( Atom type, const void *data, size_t size );
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static HANDLE import_text_uri_list( Atom type, const void *data, size_t size );
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static HANDLE import_targets( Atom type, const void *data, size_t size );
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static BOOL export_data( Display *display, Window win, Atom prop, Atom target, HANDLE handle );
static BOOL export_string( Display *display, Window win, Atom prop, Atom target, HANDLE handle );
static BOOL export_utf8_string( Display *display, Window win, Atom prop, Atom target, HANDLE handle );
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static BOOL export_text( Display *display, Window win, Atom prop, Atom target, HANDLE handle );
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static BOOL export_compound_text( Display *display, Window win, Atom prop, Atom target, HANDLE handle );
static BOOL export_pixmap( Display *display, Window win, Atom prop, Atom target, HANDLE handle );
static BOOL export_image_bmp( Display *display, Window win, Atom prop, Atom target, HANDLE handle );
static BOOL export_enhmetafile( Display *display, Window win, Atom prop, Atom target, HANDLE handle );
static BOOL export_text_html( Display *display, Window win, Atom prop, Atom target, HANDLE handle );
static BOOL export_hdrop( Display *display, Window win, Atom prop, Atom target, HANDLE handle );
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static BOOL export_targets( Display *display, Window win, Atom prop, Atom target, HANDLE handle );
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static BOOL export_multiple( Display *display, Window win, Atom prop, Atom target, HANDLE handle );
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static BOOL export_timestamp( Display *display, Window win, Atom prop, Atom target, HANDLE handle );
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static BOOL read_property( Display *display, Window w, Atom prop,
                           Atom *type, unsigned char **data, unsigned long *datasize );
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/* Clipboard formats */
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static const WCHAR RichTextFormatW[] = {'R','i','c','h',' ','T','e','x','t',' ','F','o','r','m','a','t',0};
static const WCHAR GIFW[] = {'G','I','F',0};
static const WCHAR JFIFW[] = {'J','F','I','F',0};
static const WCHAR PNGW[] = {'P','N','G',0};
static const WCHAR HTMLFormatW[] = {'H','T','M','L',' ','F','o','r','m','a','t',0};

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static const struct
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{
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    const WCHAR  *name;
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    UINT          id;
    UINT          data;
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    IMPORTFUNC    import;
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    EXPORTFUNC    export;
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} builtin_formats[] =
{
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    { 0, CF_UNICODETEXT,     XATOM_UTF8_STRING,         import_utf8_string,   export_utf8_string },
    { 0, CF_UNICODETEXT,     XATOM_COMPOUND_TEXT,       import_compound_text, export_compound_text },
    { 0, CF_UNICODETEXT,     XA_STRING,                 import_string,        export_string },
    { 0, CF_UNICODETEXT,     XATOM_text_plain,          import_string,        export_string },
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    { 0, CF_UNICODETEXT,     XATOM_TEXT,                import_text,          export_text },
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    { 0, CF_SYLK,            XATOM_WCF_SYLK,            import_data,          export_data },
    { 0, CF_DIF,             XATOM_WCF_DIF,             import_data,          export_data },
    { 0, CF_TIFF,            XATOM_WCF_TIFF,            import_data,          export_data },
    { 0, CF_DIB,             XA_PIXMAP,                 import_pixmap,        export_pixmap },
    { 0, CF_PENDATA,         XATOM_WCF_PENDATA,         import_data,          export_data },
    { 0, CF_RIFF,            XATOM_WCF_RIFF,            import_data,          export_data },
    { 0, CF_WAVE,            XATOM_WCF_WAVE,            import_data,          export_data },
    { 0, CF_ENHMETAFILE,     XATOM_WCF_ENHMETAFILE,     import_enhmetafile,   export_enhmetafile },
    { 0, CF_HDROP,           XATOM_text_uri_list,       import_text_uri_list, export_hdrop },
    { 0, CF_DIB,             XATOM_image_bmp,           import_image_bmp,     export_image_bmp },
    { RichTextFormatW, 0,    XATOM_text_rtf,            import_data,          export_data },
    { RichTextFormatW, 0,    XATOM_text_richtext,       import_data,          export_data },
    { GIFW, 0,               XATOM_image_gif,           import_data,          export_data },
    { JFIFW, 0,              XATOM_image_jpeg,          import_data,          export_data },
    { PNGW, 0,               XATOM_image_png,           import_data,          export_data },
    { HTMLFormatW, 0,        XATOM_HTML_Format,         import_data,          export_data },
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    { HTMLFormatW, 0,        XATOM_text_html,           import_text_html,     export_text_html },
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    { 0, 0,                  XATOM_TARGETS,             import_targets,       export_targets },
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    { 0, 0,                  XATOM_MULTIPLE,            NULL,                 export_multiple },
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    { 0, 0,                  XATOM_TIMESTAMP,           NULL,                 export_timestamp },
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};

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static struct list format_list = LIST_INIT( format_list );

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#define NB_BUILTIN_FORMATS (sizeof(builtin_formats) / sizeof(builtin_formats[0]))
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#define GET_ATOM(prop)  (((prop) < FIRST_XATOM) ? (Atom)(prop) : X11DRV_Atoms[(prop) - FIRST_XATOM])
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static DWORD clipboard_thread_id;
static HWND clipboard_hwnd;
static BOOL is_clipboard_owner;
static Window selection_window;
static Window import_window;
static Atom current_selection;
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static UINT rendered_formats;
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static ULONG64 last_clipboard_update;
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static struct clipboard_format **current_x11_formats;
static unsigned int nb_current_x11_formats;

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Display *clipboard_display = NULL;

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static const char *debugstr_format( UINT id )
{
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    WCHAR buffer[256];

    if (GetClipboardFormatNameW( id, buffer, 256 ))
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        return wine_dbg_sprintf( "%04x %s", id, debugstr_w(buffer) );
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    switch (id)
    {
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    case 0: return "(none)";
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#define BUILTIN(id) case id: return #id;
    BUILTIN(CF_TEXT)
    BUILTIN(CF_BITMAP)
    BUILTIN(CF_METAFILEPICT)
    BUILTIN(CF_SYLK)
    BUILTIN(CF_DIF)
    BUILTIN(CF_TIFF)
    BUILTIN(CF_OEMTEXT)
    BUILTIN(CF_DIB)
    BUILTIN(CF_PALETTE)
    BUILTIN(CF_PENDATA)
    BUILTIN(CF_RIFF)
    BUILTIN(CF_WAVE)
    BUILTIN(CF_UNICODETEXT)
    BUILTIN(CF_ENHMETAFILE)
    BUILTIN(CF_HDROP)
    BUILTIN(CF_LOCALE)
    BUILTIN(CF_DIBV5)
    BUILTIN(CF_OWNERDISPLAY)
    BUILTIN(CF_DSPTEXT)
    BUILTIN(CF_DSPBITMAP)
    BUILTIN(CF_DSPMETAFILEPICT)
    BUILTIN(CF_DSPENHMETAFILE)
#undef BUILTIN
    default: return wine_dbg_sprintf( "%04x", id );
    }
}

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static const char *debugstr_xatom( Atom atom )
{
    const char *ret;
    char *name;

    if (!atom) return "(None)";
    name = XGetAtomName( thread_display(), atom );
    ret = debugstr_a( name );
    XFree( name );
    return ret;
}

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static int is_atom_error( Display *display, XErrorEvent *event, void *arg )
{
    return (event->error_code == BadAtom);
}


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/**************************************************************************
 *		find_win32_format
 */
static struct clipboard_format *find_win32_format( UINT id )
{
    struct clipboard_format *format;

    LIST_FOR_EACH_ENTRY( format, &format_list, struct clipboard_format, entry )
        if (format->id == id) return format;
    return NULL;
}


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/**************************************************************************
 *		find_x11_format
 */
static struct clipboard_format *find_x11_format( Atom atom )
{
    struct clipboard_format *format;

    LIST_FOR_EACH_ENTRY( format, &format_list, struct clipboard_format, entry )
        if (format->atom == atom) return format;
    return NULL;
}


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/**************************************************************************
 *		register_builtin_formats
 */
static void register_builtin_formats(void)
{
    struct clipboard_format *formats;
    unsigned int i;

    if (!(formats = HeapAlloc( GetProcessHeap(), 0, NB_BUILTIN_FORMATS * sizeof(*formats)))) return;

    for (i = 0; i < NB_BUILTIN_FORMATS; i++)
    {
        if (builtin_formats[i].name)
            formats[i].id = RegisterClipboardFormatW( builtin_formats[i].name );
        else
            formats[i].id = builtin_formats[i].id;

        formats[i].atom   = GET_ATOM(builtin_formats[i].data);
        formats[i].import = builtin_formats[i].import;
        formats[i].export = builtin_formats[i].export;
        list_add_tail( &format_list, &formats[i].entry );
    }
}


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/**************************************************************************
 *		register_formats
 */
static void register_formats( const UINT *ids, const Atom *atoms, unsigned int count )
{
    struct clipboard_format *formats;
    unsigned int i;

    if (!(formats = HeapAlloc( GetProcessHeap(), 0, count * sizeof(*formats)))) return;

    for (i = 0; i < count; i++)
    {
        formats[i].id     = ids[i];
        formats[i].atom   = atoms[i];
        formats[i].import = import_data;
        formats[i].export = export_data;
        list_add_tail( &format_list, &formats[i].entry );
        TRACE( "registered %s atom %s\n", debugstr_format( ids[i] ), debugstr_xatom( atoms[i] ));
    }
}


/**************************************************************************
 *		register_win32_formats
 *
 * Register Win32 clipboard formats the first time we encounter them.
 */
static void register_win32_formats( const UINT *ids, UINT size )
{
    unsigned int count, len;
    UINT new_ids[256];
    char *names[256];
    Atom atoms[256];
    WCHAR buffer[256];

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    if (list_empty( &format_list)) register_builtin_formats();

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    while (size)
    {
        for (count = 0; count < 256 && size; ids++, size--)
        {
            if (find_win32_format( *ids )) continue;  /* it already exists */
            if (!GetClipboardFormatNameW( *ids, buffer, 256 )) continue;  /* not a named format */
            if (!(len = WideCharToMultiByte( CP_UNIXCP, 0, buffer, -1, NULL, 0, NULL, NULL ))) continue;
            if (!(names[count] = HeapAlloc( GetProcessHeap(), 0, len ))) continue;
            WideCharToMultiByte( CP_UNIXCP, 0, buffer, -1, names[count], len, NULL, NULL );
            new_ids[count++] = *ids;
        }
        if (!count) return;

        XInternAtoms( thread_display(), names, count, False, atoms );
        register_formats( new_ids, atoms, count );
        while (count) HeapFree( GetProcessHeap(), 0, names[--count] );
    }
}


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/**************************************************************************
 *		register_x11_formats
 *
 * Register X11 atom formats the first time we encounter them.
 */
static void register_x11_formats( const Atom *atoms, UINT size )
{
    Display *display = thread_display();
    unsigned int i, pos, count;
    char *names[256];
    UINT ids[256];
    Atom new_atoms[256];
    WCHAR buffer[256];

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    if (list_empty( &format_list)) register_builtin_formats();

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    while (size)
    {
        for (count = 0; count < 256 && size; atoms++, size--)
            if (!find_x11_format( *atoms )) new_atoms[count++] = *atoms;

        if (!count) return;

        X11DRV_expect_error( display, is_atom_error, NULL );
        if (!XGetAtomNames( display, new_atoms, count, names )) count = 0;
        if (X11DRV_check_error())
        {
            WARN( "got some bad atoms, ignoring\n" );
            count = 0;
        }

        for (i = pos = 0; i < count; i++)
        {
            if (MultiByteToWideChar( CP_UNIXCP, 0, names[i], -1, buffer, 256 ) &&
                (ids[pos] = RegisterClipboardFormatW( buffer )))
                new_atoms[pos++] = new_atoms[i];
            XFree( names[i] );
        }
        register_formats( ids, new_atoms, pos );
    }
}


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/**************************************************************************
 *		put_property
 *
 * Put data as a property on the specified window.
 */
static void put_property( Display *display, Window win, Atom prop, Atom type, int format,
                          const void *ptr, size_t size )
{
    const unsigned char *data = ptr;
    int mode = PropModeReplace;
    size_t width = (format == 32) ? sizeof(long) : format / 8;
    size_t max_size = XExtendedMaxRequestSize( display ) * 4;

    if (!max_size) max_size = XMaxRequestSize( display ) * 4;
    max_size -= 64; /* request overhead */

    do
    {
        size_t count = min( size, max_size / width );
        XChangeProperty( display, win, prop, type, format, mode, data, count );
        mode = PropModeAppend;
        size -= count;
        data += count * width;
    } while (size > 0);
}


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/**************************************************************************
 *		convert_selection
 */
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static BOOL convert_selection( Display *display, Window win, Atom selection,
                               struct clipboard_format *format, Atom *type,
                               unsigned char **data, unsigned long *size )
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{
    int i;
    XEvent event;

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    TRACE( "import %s from %s win %lx to format %s\n",
           debugstr_xatom( format->atom ), debugstr_xatom( selection ),
           win, debugstr_format( format->id ) );

    XConvertSelection( display, selection, format->atom, x11drv_atom(SELECTION_DATA), win, CurrentTime );
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    for (i = 0; i < SELECTION_RETRIES; i++)
    {
        Bool res = XCheckTypedWindowEvent( display, win, SelectionNotify, &event );
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        if (res && event.xselection.selection == selection && event.xselection.target == format->atom)
            return read_property( display, win, event.xselection.property, type, data, size );
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        usleep( SELECTION_WAIT );
    }
    ERR( "Timed out waiting for SelectionNotify event\n" );
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    return FALSE;
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}


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/***********************************************************************
 *           bitmap_info_size
 *
 * Return the size of the bitmap info structure including color table.
 */
static int bitmap_info_size( const BITMAPINFO * info, WORD coloruse )
{
    unsigned int colors, size, masks = 0;

    if (info->bmiHeader.biSize == sizeof(BITMAPCOREHEADER))
    {
        const BITMAPCOREHEADER *core = (const BITMAPCOREHEADER *)info;
        colors = (core->bcBitCount <= 8) ? 1 << core->bcBitCount : 0;
        return sizeof(BITMAPCOREHEADER) + colors *
             ((coloruse == DIB_RGB_COLORS) ? sizeof(RGBTRIPLE) : sizeof(WORD));
    }
    else  /* assume BITMAPINFOHEADER */
    {
        colors = info->bmiHeader.biClrUsed;
        if (!colors && (info->bmiHeader.biBitCount <= 8))
            colors = 1 << info->bmiHeader.biBitCount;
        if (info->bmiHeader.biCompression == BI_BITFIELDS) masks = 3;
        size = max( info->bmiHeader.biSize, sizeof(BITMAPINFOHEADER) + masks * sizeof(DWORD) );
        return size + colors * ((coloruse == DIB_RGB_COLORS) ? sizeof(RGBQUAD) : sizeof(WORD));
    }
}


/***********************************************************************
 *           create_dib_from_bitmap
 *
 *  Allocates a packed DIB and copies the bitmap data into it.
 */
static HGLOBAL create_dib_from_bitmap(HBITMAP hBmp)
{
    BITMAP bmp;
    HDC hdc;
    HGLOBAL hPackedDIB;
    LPBYTE pPackedDIB;
    LPBITMAPINFOHEADER pbmiHeader;
    unsigned int cDataSize, cPackedSize, OffsetBits;
    int nLinesCopied;

    if (!GetObjectW( hBmp, sizeof(bmp), &bmp )) return 0;

    /*
     * A packed DIB contains a BITMAPINFO structure followed immediately by
     * an optional color palette and the pixel data.
     */

    /* Calculate the size of the packed DIB */
    cDataSize = abs( bmp.bmHeight ) * (((bmp.bmWidth * bmp.bmBitsPixel + 31) / 8) & ~3);
    cPackedSize = sizeof(BITMAPINFOHEADER)
                  + ( (bmp.bmBitsPixel <= 8) ? (sizeof(RGBQUAD) * (1 << bmp.bmBitsPixel)) : 0 )
                  + cDataSize;
    /* Get the offset to the bits */
    OffsetBits = cPackedSize - cDataSize;

    /* Allocate the packed DIB */
    TRACE("\tAllocating packed DIB of size %d\n", cPackedSize);
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    hPackedDIB = GlobalAlloc( GMEM_FIXED, cPackedSize );
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    if ( !hPackedDIB )
    {
        WARN("Could not allocate packed DIB!\n");
        return 0;
    }

    /* A packed DIB starts with a BITMAPINFOHEADER */
    pPackedDIB = GlobalLock(hPackedDIB);
    pbmiHeader = (LPBITMAPINFOHEADER)pPackedDIB;

    /* Init the BITMAPINFOHEADER */
    pbmiHeader->biSize = sizeof(BITMAPINFOHEADER);
    pbmiHeader->biWidth = bmp.bmWidth;
    pbmiHeader->biHeight = bmp.bmHeight;
    pbmiHeader->biPlanes = 1;
    pbmiHeader->biBitCount = bmp.bmBitsPixel;
    pbmiHeader->biCompression = BI_RGB;
    pbmiHeader->biSizeImage = 0;
    pbmiHeader->biXPelsPerMeter = pbmiHeader->biYPelsPerMeter = 0;
    pbmiHeader->biClrUsed = 0;
    pbmiHeader->biClrImportant = 0;

    /* Retrieve the DIB bits from the bitmap and fill in the
     * DIB color table if present */
    hdc = GetDC( 0 );
    nLinesCopied = GetDIBits(hdc,                       /* Handle to device context */
                             hBmp,                      /* Handle to bitmap */
                             0,                         /* First scan line to set in dest bitmap */
                             bmp.bmHeight,              /* Number of scan lines to copy */
                             pPackedDIB + OffsetBits,   /* [out] Address of array for bitmap bits */
                             (LPBITMAPINFO) pbmiHeader, /* [out] Address of BITMAPINFO structure */
                             0);                        /* RGB or palette index */
    GlobalUnlock(hPackedDIB);
    ReleaseDC( 0, hdc );

    /* Cleanup if GetDIBits failed */
    if (nLinesCopied != bmp.bmHeight)
    {
        TRACE("\tGetDIBits returned %d. Actual lines=%d\n", nLinesCopied, bmp.bmHeight);
        GlobalFree(hPackedDIB);
        hPackedDIB = 0;
    }
    return hPackedDIB;
}


572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655
/***********************************************************************
 *           uri_to_dos
 *
 *  Converts a text/uri-list URI to DOS filename.
 */
static WCHAR* uri_to_dos(char *encodedURI)
{
    WCHAR *ret = NULL;
    int i;
    int j = 0;
    char *uri = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, strlen(encodedURI) + 1);
    if (uri == NULL)
        return NULL;
    for (i = 0; encodedURI[i]; ++i)
    {
        if (encodedURI[i] == '%')
        {
            if (encodedURI[i+1] && encodedURI[i+2])
            {
                char buffer[3];
                int number;
                buffer[0] = encodedURI[i+1];
                buffer[1] = encodedURI[i+2];
                buffer[2] = '\0';
                sscanf(buffer, "%x", &number);
                uri[j++] = number;
                i += 2;
            }
            else
            {
                WARN("invalid URI encoding in %s\n", debugstr_a(encodedURI));
                HeapFree(GetProcessHeap(), 0, uri);
                return NULL;
            }
        }
        else
            uri[j++] = encodedURI[i];
    }

    /* Read http://www.freedesktop.org/wiki/Draganddropwarts and cry... */
    if (strncmp(uri, "file:/", 6) == 0)
    {
        if (uri[6] == '/')
        {
            if (uri[7] == '/')
            {
                /* file:///path/to/file (nautilus, thunar) */
                ret = wine_get_dos_file_name(&uri[7]);
            }
            else if (uri[7])
            {
                /* file://hostname/path/to/file (X file drag spec) */
                char hostname[256];
                char *path = strchr(&uri[7], '/');
                if (path)
                {
                    *path = '\0';
                    if (strcmp(&uri[7], "localhost") == 0)
                    {
                        *path = '/';
                        ret = wine_get_dos_file_name(path);
                    }
                    else if (gethostname(hostname, sizeof(hostname)) == 0)
                    {
                        if (strcmp(hostname, &uri[7]) == 0)
                        {
                            *path = '/';
                            ret = wine_get_dos_file_name(path);
                        }
                    }
                }
            }
        }
        else if (uri[6])
        {
            /* file:/path/to/file (konqueror) */
            ret = wine_get_dos_file_name(&uri[5]);
        }
    }
    HeapFree(GetProcessHeap(), 0, uri);
    return ret;
}


656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682
/**************************************************************************
 *		unicode_text_from_string
 *
 * Convert a string in the specified encoding to CF_UNICODETEXT format.
 */
static HANDLE unicode_text_from_string( UINT codepage, const void *data, size_t size )
{
    DWORD i, j, count;
    WCHAR *strW;

    count = MultiByteToWideChar( codepage, 0, data, size, NULL, 0);

    if (!(strW = GlobalAlloc( GMEM_FIXED, (count * 2 + 1) * sizeof(WCHAR) ))) return 0;

    MultiByteToWideChar( codepage, 0, data, size, strW + count, count );
    for (i = j = 0; i < count; i++)
    {
        if (strW[i + count] == '\n') strW[j++] = '\r';
        strW[j++] = strW[i + count];
    }
    strW[j++] = 0;
    GlobalReAlloc( strW, j * sizeof(WCHAR), GMEM_FIXED );  /* release unused space */
    TRACE( "returning %s\n", debugstr_wn( strW, j - 1 ));
    return strW;
}


683
/**************************************************************************
684
 *		import_string
685
 *
686
 * Import XA_STRING, converting the string to CF_UNICODETEXT.
687
 */
688
static HANDLE import_string( Atom type, const void *data, size_t size )
689
{
690
    return unicode_text_from_string( 28591, data, size );
691 692 693 694
}


/**************************************************************************
695
 *		import_utf8_string
696
 *
697
 * Import XA_UTF8_STRING, converting the string to CF_UNICODETEXT.
698
 */
699
static HANDLE import_utf8_string( Atom type, const void *data, size_t size )
700
{
701
    return unicode_text_from_string( CP_UTF8, data, size );
702 703 704 705
}


/**************************************************************************
706
 *		import_compound_text
707
 *
708
 * Import COMPOUND_TEXT to CF_UNICODETEXT.
709
 */
710
static HANDLE import_compound_text( Atom type, const void *data, size_t size )
711 712
{
    char** srcstr;
713 714
    int count;
    HANDLE ret;
715 716
    XTextProperty txtprop;

717 718
    txtprop.value = (BYTE *)data;
    txtprop.nitems = size;
719 720
    txtprop.encoding = x11drv_atom(COMPOUND_TEXT);
    txtprop.format = 8;
721 722
    if (XmbTextPropertyToTextList( thread_display(), &txtprop, &srcstr, &count ) != Success) return 0;
    if (!count) return 0;
723

724
    ret = unicode_text_from_string( CP_UNIXCP, srcstr[0], strlen(srcstr[0]) + 1 );
725
    XFreeStringList(srcstr);
726
    return ret;
727
}
728

729

730 731 732 733 734 735 736 737 738 739 740 741 742 743 744
/**************************************************************************
 *		import_text
 *
 * Import XA_TEXT, converting the string to CF_UNICODETEXT.
 */
static HANDLE import_text( Atom type, const void *data, size_t size )
{
    if (type == XA_STRING) return import_string( type, data, size );
    if (type == x11drv_atom(UTF8_STRING)) return import_utf8_string( type, data, size );
    if (type == x11drv_atom(COMPOUND_TEXT)) return import_compound_text( type, data, size );
    FIXME( "unsupported TEXT type %s\n", debugstr_xatom( type ));
    return 0;
}


745
/**************************************************************************
746
 *		import_pixmap
747 748
 *
 *  Import XA_PIXMAP, converting the image to CF_DIB.
749
 */
750
static HANDLE import_pixmap( Atom type, const void *data, size_t size )
751
{
752 753 754 755 756 757 758 759 760 761 762 763 764 765 766
    const Pixmap *pPixmap = (const Pixmap *)data;
    BYTE *ptr = NULL;
    XVisualInfo vis = default_visual;
    char buffer[FIELD_OFFSET( BITMAPINFO, bmiColors[256] )];
    BITMAPINFO *info = (BITMAPINFO *)buffer;
    struct gdi_image_bits bits;
    Window root;
    int x,y;               /* Unused */
    unsigned border_width; /* Unused */
    unsigned int depth, width, height;

    /* Get the Pixmap dimensions and bit depth */
    if (!XGetGeometry(gdi_display, *pPixmap, &root, &x, &y, &width, &height,
                      &border_width, &depth)) depth = 0;
    if (!pixmap_formats[depth]) return 0;
767

768 769 770
    TRACE( "pixmap properties: width=%d, height=%d, depth=%d\n", width, height, depth );

    if (depth != vis.depth) switch (pixmap_formats[depth]->bits_per_pixel)
771
    {
772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787
        case 1:
        case 4:
        case 8:
            break;
        case 16:  /* assume R5G5B5 */
            vis.red_mask   = 0x7c00;
            vis.green_mask = 0x03e0;
            vis.blue_mask  = 0x001f;
            break;
        case 24:  /* assume R8G8B8 */
        case 32:  /* assume A8R8G8B8 */
            vis.red_mask   = 0xff0000;
            vis.green_mask = 0x00ff00;
            vis.blue_mask  = 0x0000ff;
            break;
        default:
788
            return 0;
789
    }
790

791 792 793
    if (!get_pixmap_image( *pPixmap, width, height, &vis, info, &bits ))
    {
        DWORD info_size = bitmap_info_size( info, DIB_RGB_COLORS );
794

795 796 797 798 799
        ptr = GlobalAlloc( GMEM_FIXED, info_size + info->bmiHeader.biSizeImage );
        if (ptr)
        {
            memcpy( ptr, info, info_size );
            memcpy( ptr + info_size, bits.ptr, info->bmiHeader.biSizeImage );
800
        }
801
        if (bits.free) bits.free( &bits );
802
    }
803
    return ptr;
804 805 806
}


807
/**************************************************************************
808
 *		import_image_bmp
809 810 811
 *
 *  Import image/bmp, converting the image to CF_DIB.
 */
812
static HANDLE import_image_bmp( Atom type, const void *data, size_t size )
813 814
{
    HANDLE hClipData = 0;
815
    const BITMAPFILEHEADER *bfh = data;
816

817 818
    if (size >= sizeof(BITMAPFILEHEADER)+sizeof(BITMAPCOREHEADER) &&
        bfh->bfType == 0x4d42 /* "BM" */)
819
    {
820 821 822
        const BITMAPINFO *bmi = (const BITMAPINFO *)(bfh + 1);
        HBITMAP hbmp;
        HDC hdc = GetDC(0);
823

824 825
        if ((hbmp = CreateDIBitmap( hdc, &bmi->bmiHeader, CBM_INIT,
                                    (const BYTE *)data + bfh->bfOffBits, bmi, DIB_RGB_COLORS )))
826
        {
827
            hClipData = create_dib_from_bitmap( hbmp );
828 829
            DeleteObject(hbmp);
        }
830
        ReleaseDC(0, hdc);
831 832 833 834 835
    }
    return hClipData;
}


836
/**************************************************************************
837
 *		import_enhmetafile
838
 */
839
static HANDLE import_enhmetafile( Atom type, const void *data, size_t size )
840
{
841
    return SetEnhMetaFileBits( size, data );
842 843 844
}


845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888
/**************************************************************************
 *              import_text_html
 */
static HANDLE import_text_html( Atom type, const void *data, size_t size )
{
    static const char header[] =
        "Version:0.9\n"
        "StartHTML:0000000100\n"
        "EndHTML:%010lu\n"
        "StartFragment:%010lu\n"
        "EndFragment:%010lu\n"
        "<!--StartFragment-->";
    static const char trailer[] = "\n<!--EndFragment-->";
    char *text = NULL;
    HANDLE ret;
    SIZE_T len, total;

    /* Firefox uses UTF-16LE with byte order mark. Convert to UTF-8 without the BOM. */
    if (size >= sizeof(WCHAR) && ((const WCHAR *)data)[0] == 0xfeff)
    {
        len = WideCharToMultiByte( CP_UTF8, 0, (const WCHAR *)data + 1, size / sizeof(WCHAR) - 1,
                                   NULL, 0, NULL, NULL );
        if (!(text = HeapAlloc( GetProcessHeap(), 0, len ))) return 0;
        WideCharToMultiByte( CP_UTF8, 0, (const WCHAR *)data + 1, size / sizeof(WCHAR) - 1,
                             text, len, NULL, NULL );
        size = len;
        data = text;
    }

    len = strlen( header ) + 12;  /* 3 * 4 extra chars for %010lu */
    total = len + size + sizeof(trailer);
    if ((ret = GlobalAlloc( GMEM_FIXED, total )))
    {
        char *p = ret;
        p += sprintf( p, header, total - 1, len, len + size + 1 /* include the final \n in the data */ );
        memcpy( p, data, size );
        strcpy( p + size, trailer );
        TRACE( "returning %s\n", debugstr_a( ret ));
    }
    HeapFree( GetProcessHeap(), 0, text );
    return ret;
}


889
/**************************************************************************
890
 *      import_text_uri_list
891 892 893
 *
 *  Import text/uri-list.
 */
894
static HANDLE import_text_uri_list( Atom type, const void *data, size_t size )
895
{
896
    const char *uriList = data;
897 898 899
    char *uri;
    WCHAR *path;
    WCHAR *out = NULL;
900
    int total = 0;
901 902 903
    int capacity = 4096;
    int start = 0;
    int end = 0;
904
    DROPFILES *dropFiles = NULL;
905

906
    if (!(out = HeapAlloc(GetProcessHeap(), 0, capacity * sizeof(WCHAR)))) return 0;
907

908
    while (end < size)
909
    {
910
        while (end < size && uriList[end] != '\r')
911
            ++end;
912
        if (end < (size - 1) && uriList[end+1] != '\n')
913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928
        {
            WARN("URI list line doesn't end in \\r\\n\n");
            break;
        }

        uri = HeapAlloc(GetProcessHeap(), 0, end - start + 1);
        if (uri == NULL)
            break;
        lstrcpynA(uri, &uriList[start], end - start + 1);
        path = uri_to_dos(uri);
        TRACE("converted URI %s to DOS path %s\n", debugstr_a(uri), debugstr_w(path));
        HeapFree(GetProcessHeap(), 0, uri);

        if (path)
        {
            int pathSize = strlenW(path) + 1;
929
            if (pathSize > capacity - total)
930 931 932 933 934 935
            {
                capacity = 2*capacity + pathSize;
                out = HeapReAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, out, (capacity + 1)*sizeof(WCHAR));
                if (out == NULL)
                    goto done;
            }
936 937
            memcpy(&out[total], path, pathSize * sizeof(WCHAR));
            total += pathSize;
938 939 940 941 942 943 944 945 946
        done:
            HeapFree(GetProcessHeap(), 0, path);
            if (out == NULL)
                break;
        }

        start = end + 2;
        end = start;
    }
947
    if (out && end >= size)
948
    {
949
        if ((dropFiles = GlobalAlloc( GMEM_FIXED, sizeof(DROPFILES) + (total + 1) * sizeof(WCHAR) )))
950 951 952 953 954 955
        {
            dropFiles->pFiles = sizeof(DROPFILES);
            dropFiles->pt.x = 0;
            dropFiles->pt.y = 0;
            dropFiles->fNC = 0;
            dropFiles->fWide = TRUE;
956 957
            out[total] = '\0';
            memcpy( (char*)dropFiles + dropFiles->pFiles, out, (total + 1) * sizeof(WCHAR) );
958 959 960
        }
    }
    HeapFree(GetProcessHeap(), 0, out);
961
    return dropFiles;
962 963 964
}


965 966 967 968 969 970 971
/**************************************************************************
 *		import_targets
 *
 *  Import TARGETS and mark the corresponding clipboard formats as available.
 */
static HANDLE import_targets( Atom type, const void *data, size_t size )
{
972
    UINT i, pos, count = size / sizeof(Atom);
973
    const Atom *properties = data;
974
    struct clipboard_format *format, **formats;
975 976 977 978 979

    if (type != XA_ATOM && type != x11drv_atom(TARGETS)) return 0;

    register_x11_formats( properties, count );

980 981 982 983 984
    /* the builtin formats contain duplicates, so allocate some extra space */
    if (!(formats = HeapAlloc( GetProcessHeap(), 0, (count + NB_BUILTIN_FORMATS) * sizeof(*formats ))))
        return 0;

    pos = 0;
985 986 987 988 989 990 991 992
    LIST_FOR_EACH_ENTRY( format, &format_list, struct clipboard_format, entry )
    {
        for (i = 0; i < count; i++) if (properties[i] == format->atom) break;
        if (i == count) continue;
        if (format->import && format->id)
        {
            TRACE( "property %s -> format %s\n",
                   debugstr_xatom( properties[i] ), debugstr_format( format->id ));
993
            SetClipboardData( format->id, 0 );
994
            formats[pos++] = format;
995 996 997
        }
        else TRACE( "property %s (ignoring)\n", debugstr_xatom( properties[i] ));
    }
998 999 1000 1001

    HeapFree( GetProcessHeap(), 0, current_x11_formats );
    current_x11_formats = formats;
    nb_current_x11_formats = pos;
1002 1003 1004 1005
    return (HANDLE)1;
}


1006
/**************************************************************************
1007
 *		import_data
1008 1009 1010
 *
 *  Generic import clipboard data routine.
 */
1011
static HANDLE import_data( Atom type, const void *data, size_t size )
1012
{
1013
    void *ret = GlobalAlloc( GMEM_FIXED, size );
1014

1015 1016 1017
    if (ret) memcpy( ret, data, size );
    return ret;
}
1018 1019


1020 1021 1022
/**************************************************************************
 *		import_selection
 *
1023
 * Import the specified format from the selection and return a global handle to the data.
1024
 */
1025 1026
static HANDLE import_selection( Display *display, Window win, Atom selection,
                                struct clipboard_format *format )
1027 1028 1029
{
    unsigned char *data;
    unsigned long size;
1030
    Atom type;
1031
    HANDLE ret;
1032

1033
    if (!format->import) return 0;
1034

1035
    if (!convert_selection( display, win, selection, format, &type, &data, &size ))
1036 1037 1038 1039
    {
        TRACE( "failed to convert selection\n" );
        return 0;
    }
1040 1041 1042
    ret = format->import( type, data, size );
    HeapFree( GetProcessHeap(), 0, data );
    return ret;
1043 1044
}

1045

1046 1047 1048 1049 1050
/**************************************************************************
 *      X11DRV_CLIPBOARD_ImportSelection
 *
 *  Import the X selection into the clipboard format registered for the given X target.
 */
1051 1052 1053
void X11DRV_CLIPBOARD_ImportSelection( Display *display, Window win, Atom selection,
                                       Atom *targets, UINT count,
                                       void (*callback)( Atom, UINT, HANDLE ))
1054
{
1055 1056 1057 1058
    UINT i;
    HANDLE handle;
    struct clipboard_format *format;

1059 1060
    register_x11_formats( targets, count );

1061 1062
    for (i = 0; i < count; i++)
    {
1063
        if (!(format = find_x11_format( targets[i] ))) continue;
1064 1065 1066 1067
        if (!format->id) continue;
        if (!(handle = import_selection( display, win, selection, format ))) continue;
        callback( targets[i], format->id, handle );
    }
1068 1069
}

1070

1071 1072 1073
/**************************************************************************
 *		render_format
 */
1074
static HANDLE render_format( UINT id )
1075
{
1076
    Display *display = thread_display();
1077 1078 1079
    unsigned int i;
    HANDLE handle = 0;

1080
    if (!current_selection) return 0;
1081

1082 1083 1084
    for (i = 0; i < nb_current_x11_formats; i++)
    {
        if (current_x11_formats[i]->id != id) continue;
1085
        handle = import_selection( display, import_window, current_selection, current_x11_formats[i] );
1086
        if (handle) SetClipboardData( id, handle );
1087 1088
        break;
    }
1089
    return handle;
1090 1091 1092
}


1093
/**************************************************************************
1094
 *		export_data
1095 1096 1097
 *
 *  Generic export clipboard data routine.
 */
1098
static BOOL export_data( Display *display, Window win, Atom prop, Atom target, HANDLE handle )
1099
{
1100
    void *ptr = GlobalLock( handle );
1101

1102 1103 1104 1105
    if (!ptr) return FALSE;
    put_property( display, win, prop, target, 8, ptr, GlobalSize( handle ));
    GlobalUnlock( handle );
    return TRUE;
1106
}
1107 1108


1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141
/**************************************************************************
 *		string_from_unicode_text
 *
 * Convert CF_UNICODETEXT data to a string in the specified codepage.
 */
static char *string_from_unicode_text( UINT codepage, HANDLE handle, UINT *size )
{
    UINT i, j;
    char *str;
    WCHAR *strW = GlobalLock( handle );
    UINT lenW = GlobalSize( handle ) / sizeof(WCHAR);
    DWORD len = WideCharToMultiByte( codepage, 0, strW, lenW, NULL, 0, NULL, NULL );

    if ((str = HeapAlloc( GetProcessHeap(), 0, len )))
    {
        WideCharToMultiByte( codepage, 0, strW, lenW, str, len, NULL, NULL);
        GlobalUnlock( handle );

        /* remove carriage returns */
        for (i = j = 0; i < len; i++)
        {
            if (str[i] == '\r' && (i == len - 1 || str[i + 1] == '\n')) continue;
            str[j++] = str[i];
        }
        if (j && !str[j - 1]) j--;  /* remove trailing null */
        *size = j;
        TRACE( "returning %s\n", debugstr_an( str, j ));
    }
    GlobalUnlock( handle );
    return str;
}


1142
/**************************************************************************
1143
 *		export_string
1144
 *
1145
 * Export CF_UNICODETEXT converting the string to XA_STRING.
1146
 */
1147
static BOOL export_string( Display *display, Window win, Atom prop, Atom target, HANDLE handle )
1148 1149
{
    UINT size;
1150
    char *text = string_from_unicode_text( 28591, handle, &size );
1151

1152 1153 1154
    if (!text) return FALSE;
    put_property( display, win, prop, target, 8, text, size );
    HeapFree( GetProcessHeap(), 0, text );
1155 1156
    GlobalUnlock( handle );
    return TRUE;
1157 1158 1159 1160
}


/**************************************************************************
1161
 *		export_utf8_string
1162 1163 1164
 *
 *  Export CF_UNICODE converting the string to UTF8.
 */
1165
static BOOL export_utf8_string( Display *display, Window win, Atom prop, Atom target, HANDLE handle )
1166 1167
{
    UINT size;
1168
    char *text = string_from_unicode_text( CP_UTF8, handle, &size );
1169

1170 1171 1172
    if (!text) return FALSE;
    put_property( display, win, prop, target, 8, text, size );
    HeapFree( GetProcessHeap(), 0, text );
1173 1174
    GlobalUnlock( handle );
    return TRUE;
1175 1176 1177
}


1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188
/**************************************************************************
 *		export_text
 *
 *  Export CF_UNICODE to the polymorphic TEXT type, using UTF8.
 */
static BOOL export_text( Display *display, Window win, Atom prop, Atom target, HANDLE handle )
{
    return export_utf8_string( display, win, prop, x11drv_atom(UTF8_STRING), handle );
}


1189
/**************************************************************************
1190
 *		export_compound_text
1191
 *
1192
 *  Export CF_UNICODE to COMPOUND_TEXT
1193
 */
1194
static BOOL export_compound_text( Display *display, Window win, Atom prop, Atom target, HANDLE handle )
1195
{
1196
    XTextProperty textprop;
1197
    XICCEncodingStyle style;
1198
    UINT size;
1199
    char *text = string_from_unicode_text( CP_UNIXCP, handle, &size );
1200

1201
    if (!text) return FALSE;
1202
    if (target == x11drv_atom(COMPOUND_TEXT))
1203 1204 1205 1206 1207
        style = XCompoundTextStyle;
    else
        style = XStdICCTextStyle;

    /* Update the X property */
1208
    if (XmbTextListToTextProperty( display, &text, 1, style, &textprop ) == Success)
1209
    {
1210 1211
        XSetTextProperty( display, win, &textprop, prop );
        XFree( textprop.value );
1212
    }
1213

1214
    HeapFree( GetProcessHeap(), 0, text );
1215
    return TRUE;
1216 1217 1218
}


1219
/**************************************************************************
1220
 *		export_pixmap
1221 1222 1223
 *
 *  Export CF_DIB to XA_PIXMAP.
 */
1224
static BOOL export_pixmap( Display *display, Window win, Atom prop, Atom target, HANDLE handle )
1225
{
1226 1227 1228
    Pixmap pixmap;
    BITMAPINFO *pbmi;
    struct gdi_image_bits bits;
1229

1230 1231 1232 1233 1234 1235
    pbmi = GlobalLock( handle );
    bits.ptr = (LPBYTE)pbmi + bitmap_info_size( pbmi, DIB_RGB_COLORS );
    bits.free = NULL;
    bits.is_copy = FALSE;
    pixmap = create_pixmap_from_image( 0, &default_visual, pbmi, &bits, DIB_RGB_COLORS );
    GlobalUnlock( handle );
1236

1237 1238 1239
    put_property( display, win, prop, target, 32, &pixmap, 1 );
    /* FIXME: free the pixmap when the property is deleted */
    return TRUE;
1240 1241 1242
}


1243
/**************************************************************************
1244
 *		export_image_bmp
1245 1246 1247
 *
 *  Export CF_DIB to image/bmp.
 */
1248
static BOOL export_image_bmp( Display *display, Window win, Atom prop, Atom target, HANDLE handle )
1249
{
1250
    LPBYTE dibdata = GlobalLock( handle );
1251 1252 1253
    UINT bmpsize;
    BITMAPFILEHEADER *bfh;

1254 1255 1256
    bmpsize = sizeof(BITMAPFILEHEADER) + GlobalSize( handle );
    bfh = HeapAlloc( GetProcessHeap(), 0, bmpsize );
    if (bfh)
1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267
    {
        /* bitmap file header */
        bfh->bfType = 0x4d42; /* "BM" */
        bfh->bfSize = bmpsize;
        bfh->bfReserved1 = 0;
        bfh->bfReserved2 = 0;
        bfh->bfOffBits = sizeof(BITMAPFILEHEADER) + bitmap_info_size((BITMAPINFO*)dibdata, DIB_RGB_COLORS);

        /* rest of bitmap is the same as the packed dib */
        memcpy(bfh+1, dibdata, bmpsize-sizeof(BITMAPFILEHEADER));
    }
1268 1269 1270 1271
    GlobalUnlock( handle );
    put_property( display, win, prop, target, 8, bfh, bmpsize );
    HeapFree( GetProcessHeap(), 0, bfh );
    return TRUE;
1272 1273 1274
}


1275
/**************************************************************************
1276
 *		export_enhmetafile
1277 1278 1279
 *
 *  Export EnhMetaFile.
 */
1280
static BOOL export_enhmetafile( Display *display, Window win, Atom prop, Atom target, HANDLE handle )
1281
{
1282
    unsigned int size;
1283
    void *ptr;
1284

1285 1286
    if (!(size = GetEnhMetaFileBits( handle, 0, NULL ))) return FALSE;
    if (!(ptr = HeapAlloc( GetProcessHeap(), 0, size ))) return FALSE;
1287

1288 1289 1290 1291
    GetEnhMetaFileBits( handle, size, ptr );
    put_property( display, win, prop, target, 8, ptr, size );
    HeapFree( GetProcessHeap(), 0, ptr );
    return TRUE;
1292
}
1293 1294


1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317
/**************************************************************************
 *		get_html_description_field
 *
 *  Find the value of a field in an HTML Format description.
 */
static LPCSTR get_html_description_field(LPCSTR data, LPCSTR keyword)
{
    LPCSTR pos=data;

    while (pos && *pos && *pos != '<')
    {
        if (memcmp(pos, keyword, strlen(keyword)) == 0)
            return pos+strlen(keyword);

        pos = strchr(pos, '\n');
        if (pos) pos++;
    }

    return NULL;
}


/**************************************************************************
1318
 *		export_text_html
1319 1320 1321 1322 1323
 *
 *  Export HTML Format to text/html.
 *
 * FIXME: We should attempt to add an <a base> tag and convert windows paths.
 */
1324
static BOOL export_text_html( Display *display, Window win, Atom prop, Atom target, HANDLE handle )
1325 1326
{
    LPCSTR data, field_value;
1327
    UINT fragmentstart, fragmentend;
1328

1329
    data = GlobalLock( handle );
1330 1331 1332 1333 1334 1335

    /* read the important fields */
    field_value = get_html_description_field(data, "StartFragment:");
    if (!field_value)
    {
        ERR("Couldn't find StartFragment value\n");
1336
        goto failed;
1337 1338 1339 1340 1341 1342 1343
    }
    fragmentstart = atoi(field_value);

    field_value = get_html_description_field(data, "EndFragment:");
    if (!field_value)
    {
        ERR("Couldn't find EndFragment value\n");
1344
        goto failed;
1345 1346 1347 1348
    }
    fragmentend = atoi(field_value);

    /* export only the fragment */
1349 1350 1351
    put_property( display, win, prop, target, 8, &data[fragmentstart], fragmentend - fragmentstart );
    GlobalUnlock( handle );
    return TRUE;
1352

1353 1354 1355
failed:
    GlobalUnlock( handle );
    return FALSE;
1356 1357 1358
}


1359
/**************************************************************************
1360
 *      export_hdrop
1361 1362 1363
 *
 *  Export CF_HDROP format to text/uri-list.
 */
1364
static BOOL export_hdrop( Display *display, Window win, Atom prop, Atom target, HANDLE handle )
1365 1366 1367
{
    UINT i;
    UINT numFiles;
1368
    char *textUriList;
1369 1370 1371
    UINT textUriListSize = 32;
    UINT next = 0;

1372 1373 1374
    textUriList = HeapAlloc( GetProcessHeap(), 0, textUriListSize );
    if (!textUriList) return FALSE;
    numFiles = DragQueryFileW( handle, 0xFFFFFFFF, NULL, 0 );
1375 1376 1377 1378 1379 1380 1381 1382
    for (i = 0; i < numFiles; i++)
    {
        UINT dosFilenameSize;
        WCHAR *dosFilename = NULL;
        char *unixFilename = NULL;
        UINT uriSize;
        UINT u;

1383
        dosFilenameSize = 1 + DragQueryFileW( handle, i, NULL, 0 );
1384 1385
        dosFilename = HeapAlloc(GetProcessHeap(), 0, dosFilenameSize*sizeof(WCHAR));
        if (dosFilename == NULL) goto failed;
1386
        DragQueryFileW( handle, i, dosFilename, dosFilenameSize );
1387 1388 1389 1390 1391 1392 1393 1394 1395
        unixFilename = wine_get_unix_file_name(dosFilename);
        HeapFree(GetProcessHeap(), 0, dosFilename);
        if (unixFilename == NULL) goto failed;
        uriSize = 8 + /* file:/// */
                3 * (lstrlenA(unixFilename) - 1) + /* "%xy" per char except first '/' */
                2; /* \r\n */
        if ((next + uriSize) > textUriListSize)
        {
            UINT biggerSize = max( 2 * textUriListSize, next + uriSize );
1396
            void *bigger = HeapReAlloc( GetProcessHeap(), 0, textUriList, biggerSize );
1397 1398
            if (bigger)
            {
1399
                textUriList = bigger;
1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421
                textUriListSize = biggerSize;
            }
            else
            {
                HeapFree(GetProcessHeap(), 0, unixFilename);
                goto failed;
            }
        }
        lstrcpyA(&textUriList[next], "file:///");
        next += 8;
        /* URL encode everything - unnecessary, but easier/lighter than linking in shlwapi, and can't hurt */
        for (u = 1; unixFilename[u]; u++)
        {
            static const char hex_table[] = "0123456789abcdef";
            textUriList[next++] = '%';
            textUriList[next++] = hex_table[unixFilename[u] >> 4];
            textUriList[next++] = hex_table[unixFilename[u] & 0xf];
        }
        textUriList[next++] = '\r';
        textUriList[next++] = '\n';
        HeapFree(GetProcessHeap(), 0, unixFilename);
    }
1422 1423 1424
    put_property( display, win, prop, target, 8, textUriList, next );
    HeapFree( GetProcessHeap(), 0, textUriList );
    return TRUE;
1425 1426

failed:
1427 1428 1429 1430 1431
    HeapFree( GetProcessHeap(), 0, textUriList );
    return FALSE;
}


1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449
/***********************************************************************
 *           get_clipboard_formats
 *
 * Return a list of all formats currently available on the Win32 clipboard.
 * Helper for export_targets.
 */
static UINT *get_clipboard_formats( UINT *size )
{
    UINT *ids;

    *size = 256;
    for (;;)
    {
        if (!(ids = HeapAlloc( GetProcessHeap(), 0, *size * sizeof(*ids) ))) return NULL;
        if (GetUpdatedClipboardFormats( ids, *size, size )) break;
        HeapFree( GetProcessHeap(), 0, ids );
        if (GetLastError() != ERROR_INSUFFICIENT_BUFFER) return NULL;
    }
1450
    register_win32_formats( ids, *size );
1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504
    return ids;
}


/***********************************************************************
 *           is_format_available
 *
 * Check if a clipboard format is included in the list.
 * Helper for export_targets.
 */
static BOOL is_format_available( UINT format, const UINT *ids, unsigned int count )
{
    while (count--) if (*ids++ == format) return TRUE;
    return FALSE;
}


/***********************************************************************
 *           export_targets
 *
 *  Service a TARGETS selection request event
 */
static BOOL export_targets( Display *display, Window win, Atom prop, Atom target, HANDLE handle )
{
    struct clipboard_format *format;
    UINT pos, count, *formats;
    Atom *targets;

    if (!(formats = get_clipboard_formats( &count ))) return FALSE;

    /* the builtin formats contain duplicates, so allocate some extra space */
    if (!(targets = HeapAlloc( GetProcessHeap(), 0, (count + NB_BUILTIN_FORMATS) * sizeof(*targets) )))
    {
        HeapFree( GetProcessHeap(), 0, formats );
        return FALSE;
    }

    pos = 0;
    LIST_FOR_EACH_ENTRY( format, &format_list, struct clipboard_format, entry )
    {
        if (!format->export) continue;
        /* formats with id==0 are always exported */
        if (format->id && !is_format_available( format->id, formats, count )) continue;
        TRACE( "%d: %s -> %s\n", pos, debugstr_format( format->id ), debugstr_xatom( format->atom ));
        targets[pos++] = format->atom;
    }

    put_property( display, win, prop, XA_ATOM, 32, targets, pos );
    HeapFree( GetProcessHeap(), 0, targets );
    HeapFree( GetProcessHeap(), 0, formats );
    return TRUE;
}


1505 1506 1507 1508 1509 1510 1511
/**************************************************************************
 *      export_selection
 *
 * Export selection data, depending on the target type.
 */
static BOOL export_selection( Display *display, Window win, Atom prop, Atom target )
{
1512
    struct clipboard_format *format;
1513
    HANDLE handle = 0;
1514
    BOOL open = FALSE, ret = FALSE;
1515

1516
    LIST_FOR_EACH_ENTRY( format, &format_list, struct clipboard_format, entry )
1517
    {
1518 1519 1520 1521 1522 1523 1524 1525
        if (format->atom != target) continue;
        if (!format->export) continue;
        if (!format->id)
        {
            TRACE( "win %lx prop %s target %s\n", win, debugstr_xatom( prop ), debugstr_xatom( target ));
            ret = format->export( display, win, prop, target, 0 );
            break;
        }
1526
        if (!open && !(open = OpenClipboard( clipboard_hwnd )))
1527 1528 1529 1530 1531 1532 1533 1534 1535
        {
            ERR( "failed to open clipboard for %s\n", debugstr_xatom( target ));
            return FALSE;
        }
        if ((handle = GetClipboardData( format->id )))
        {
            TRACE( "win %lx prop %s target %s exporting %s %p\n",
                   win, debugstr_xatom( prop ), debugstr_xatom( target ),
                   debugstr_format( format->id ), handle );
1536

1537 1538 1539 1540 1541 1542
            ret = format->export( display, win, prop, target, handle );
            break;
        }
        /* keep looking for another Win32 format mapping to the same target */
    }
    if (open) CloseClipboard();
1543
    return ret;
1544 1545 1546
}


1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600
/***********************************************************************
 *           export_multiple
 *
 *  Service a MULTIPLE selection request event
 *  prop contains a list of (target,property) atom pairs.
 *  The first atom names a target and the second names a property.
 *  The effect is as if we have received a sequence of SelectionRequest events
 *  (one for each atom pair) except that:
 *  1. We reply with a SelectionNotify only when all the requested conversions
 *  have been performed.
 *  2. If we fail to convert the target named by an atom in the MULTIPLE property,
 *  we replace the atom in the property by None.
 */
static BOOL export_multiple( Display *display, Window win, Atom prop, Atom target, HANDLE handle )
{
    Atom atype;
    int aformat;
    Atom *list;
    unsigned long i, count, failed, remain;

    /* Read the MULTIPLE property contents. This should contain a list of
     * (target,property) atom pairs.
     */
    if (XGetWindowProperty( display, win, prop, 0, 0x3FFF, False, AnyPropertyType, &atype, &aformat,
                            &count, &remain, (unsigned char**)&list ))
        return FALSE;

    TRACE( "type %s format %d count %ld remain %ld\n",
           debugstr_xatom( atype ), aformat, count, remain );

    /*
     * Make sure we got what we expect.
     * NOTE: According to the X-ICCCM Version 2.0 documentation the property sent
     * in a MULTIPLE selection request should be of type ATOM_PAIR.
     * However some X apps(such as XPaint) are not compliant with this and return
     * a user defined atom in atype when XGetWindowProperty is called.
     * The data *is* an atom pair but is not denoted as such.
     */
    if (aformat == 32 /* atype == xAtomPair */ )
    {
        for (i = failed = 0; i < count; i += 2)
        {
            if (list[i+1] == None) continue;
            if (export_selection( display, win, list[i + 1], list[i] )) continue;
            failed++;
            list[i + 1] = None;
        }
        if (failed) put_property( display, win, prop, atype, 32, list, count );
    }
    XFree( list );
    return TRUE;
}


1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613
/***********************************************************************
 *           export_timestamp
 *
 * Export the timestamp that was used to acquire the selection
 */
static BOOL export_timestamp( Display *display, Window win, Atom prop, Atom target, HANDLE handle )
{
    Time time = CurrentTime;  /* FIXME */
    put_property( display, win, prop, XA_INTEGER, 32, &time, 1 );
    return TRUE;
}


1614
/**************************************************************************
1615 1616
 *		X11DRV_CLIPBOARD_GetProperty
 *  Gets type, data and size.
1617
 */
1618 1619
static BOOL X11DRV_CLIPBOARD_GetProperty(Display *display, Window w, Atom prop,
    Atom *atype, unsigned char** data, unsigned long* datasize)
1620
{
1621
    int aformat;
1622 1623
    unsigned long pos = 0, nitems, remain, count;
    unsigned char *val = NULL, *buffer;
1624

1625
    for (;;)
1626
    {
1627
        if (XGetWindowProperty(display, w, prop, pos, INT_MAX / 4, False,
1628
                               AnyPropertyType, atype, &aformat, &nitems, &remain, &buffer))
1629 1630 1631 1632 1633
        {
            WARN("Failed to read property\n");
            HeapFree( GetProcessHeap(), 0, val );
            return FALSE;
        }
1634

1635
        count = get_property_size( aformat, nitems );
1636 1637
        if (!val) *data = HeapAlloc( GetProcessHeap(), 0, pos * sizeof(int) + count + 1 );
        else *data = HeapReAlloc( GetProcessHeap(), 0, val, pos * sizeof(int) + count + 1 );
1638

1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654
        if (!*data)
        {
            XFree( buffer );
            HeapFree( GetProcessHeap(), 0, val );
            return FALSE;
        }
        val = *data;
        memcpy( (int *)val + pos, buffer, count );
        XFree( buffer );
        if (!remain)
        {
            *datasize = pos * sizeof(int) + count;
            val[*datasize] = 0;
            break;
        }
        pos += count / sizeof(int);
1655
    }
1656

1657 1658 1659
    TRACE( "got property %s type %s format %u len %lu from window %lx\n",
           debugstr_xatom( prop ), debugstr_xatom( *atype ), aformat, *datasize, w );

1660 1661
    /* Delete the property on the window now that we are done
     * This will send a PropertyNotify event to the selection owner. */
1662 1663
    XDeleteProperty(display, w, prop);
    return TRUE;
1664
}
1665 1666


1667 1668 1669 1670 1671 1672
struct clipboard_data_packet {
    struct list entry;
    unsigned long size;
    unsigned char *data;
};

1673
/**************************************************************************
1674 1675
 *		read_property
 *
1676 1677
 *  Reads the contents of the X selection property.
 */
1678 1679
static BOOL read_property( Display *display, Window w, Atom prop,
                           Atom *type, unsigned char **data, unsigned long *datasize )
1680 1681 1682 1683 1684 1685 1686 1687 1688
{
    XEvent xe;

    if (prop == None)
        return FALSE;

    while (XCheckTypedWindowEvent(display, w, PropertyNotify, &xe))
        ;

1689
    if (!X11DRV_CLIPBOARD_GetProperty(display, w, prop, type, data, datasize))
1690 1691
        return FALSE;

1692
    if (*type == x11drv_atom(INCR))
1693
    {
1694
        unsigned char *buf;
1695
        unsigned long bufsize = 0;
1696 1697 1698 1699 1700 1701 1702 1703
        struct list packets;
        struct clipboard_data_packet *packet, *packet2;
        BOOL res;

        HeapFree(GetProcessHeap(), 0, *data);
        *data = NULL;

        list_init(&packets);
1704 1705 1706 1707

        for (;;)
        {
            int i;
1708
            unsigned char *prop_data;
1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723
            unsigned long prop_size;

            /* Wait until PropertyNotify is received */
            for (i = 0; i < SELECTION_RETRIES; i++)
            {
                Bool res;

                res = XCheckTypedWindowEvent(display, w, PropertyNotify, &xe);
                if (res && xe.xproperty.atom == prop &&
                    xe.xproperty.state == PropertyNewValue)
                    break;
                usleep(SELECTION_WAIT);
            }

            if (i >= SELECTION_RETRIES ||
1724
                !X11DRV_CLIPBOARD_GetProperty(display, w, prop, type, &prop_data, &prop_size))
1725
            {
1726 1727
                res = FALSE;
                break;
1728 1729 1730 1731 1732 1733
            }

            /* Retrieved entire data. */
            if (prop_size == 0)
            {
                HeapFree(GetProcessHeap(), 0, prop_data);
1734 1735
                res = TRUE;
                break;
1736 1737
            }

1738 1739
            packet = HeapAlloc(GetProcessHeap(), 0, sizeof(*packet));
            if (!packet)
1740
            {
1741
                HeapFree(GetProcessHeap(), 0, prop_data);
1742 1743
                res = FALSE;
                break;
1744 1745
            }

1746 1747 1748
            packet->size = prop_size;
            packet->data = prop_data;
            list_add_tail(&packets, &packet->entry);
1749 1750
            bufsize += prop_size;
        }
1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777

        if (res)
        {
            buf = HeapAlloc(GetProcessHeap(), 0, bufsize + 1);
            if (buf)
            {
                unsigned long bytes_copied = 0;
                *datasize = bufsize;
                LIST_FOR_EACH_ENTRY( packet, &packets, struct clipboard_data_packet, entry)
                {
                    memcpy(&buf[bytes_copied], packet->data, packet->size);
                    bytes_copied += packet->size;
                }
                buf[bufsize] = 0;
                *data = buf;
            }
            else
                res = FALSE;
        }

        LIST_FOR_EACH_ENTRY_SAFE( packet, packet2, &packets, struct clipboard_data_packet, entry)
        {
            HeapFree(GetProcessHeap(), 0, packet->data);
            HeapFree(GetProcessHeap(), 0, packet);
        }

        return res;
1778 1779 1780 1781 1782 1783
    }

    return TRUE;
}


1784
/**************************************************************************
1785
 *		acquire_selection
1786
 *
1787
 * Acquire the X11 selection when the Win32 clipboard has changed.
1788
 */
1789
static void acquire_selection( Display *display )
1790
{
1791
    if (selection_window) XDestroyWindow( display, selection_window );
1792

1793 1794 1795
    selection_window = XCreateWindow( display, root_window, 0, 0, 1, 1, 0, CopyFromParent,
                                      InputOutput, CopyFromParent, 0, NULL );
    if (!selection_window) return;
1796

1797 1798 1799
    XSetSelectionOwner( display, x11drv_atom(CLIPBOARD), selection_window, CurrentTime );
    if (use_primary_selection) XSetSelectionOwner( display, XA_PRIMARY, selection_window, CurrentTime );
    TRACE( "win %lx\n", selection_window );
1800
}
1801

1802

1803
/**************************************************************************
1804 1805 1806 1807 1808
 *		release_selection
 *
 * Release the X11 selection when some other X11 app has grabbed it.
 */
static void release_selection( Display *display, Time time )
1809
{
1810
    assert( selection_window );
1811

1812
    TRACE( "win %lx\n", selection_window );
1813

1814 1815 1816
    /* release PRIMARY if we still own it */
    if (use_primary_selection && XGetSelectionOwner( display, XA_PRIMARY ) == selection_window)
        XSetSelectionOwner( display, XA_PRIMARY, None, time );
1817

1818 1819 1820
    XDestroyWindow( display, selection_window );
    selection_window = 0;
}
1821 1822


1823 1824 1825 1826 1827
/**************************************************************************
 *		request_selection_contents
 *
 * Retrieve the contents of the X11 selection when it's owned by an X11 app.
 */
1828
static BOOL request_selection_contents( Display *display, BOOL changed )
1829 1830 1831
{
    struct clipboard_format *targets = find_x11_format( x11drv_atom(TARGETS) );
    struct clipboard_format *string = find_x11_format( XA_STRING );
1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843
    struct clipboard_format *format = NULL;
    Window owner = 0;
    unsigned char *data = NULL;
    unsigned long size = 0;
    Atom type = 0;

    static Atom last_selection;
    static Window last_owner;
    static struct clipboard_format *last_format;
    static Atom last_type;
    static unsigned char *last_data;
    static unsigned long last_size;
1844

1845 1846
    assert( targets );
    assert( string );
1847

1848
    current_selection = 0;
1849
    if (use_primary_selection)
1850
    {
1851
        if ((owner = XGetSelectionOwner( display, XA_PRIMARY )))
1852 1853
            current_selection = XA_PRIMARY;
    }
1854
    if (!current_selection)
1855
    {
1856
        if ((owner = XGetSelectionOwner( display, x11drv_atom(CLIPBOARD) )))
1857
            current_selection = x11drv_atom(CLIPBOARD);
1858 1859
    }

1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881
    if (current_selection)
    {
        if (convert_selection( display, import_window, current_selection, targets, &type, &data, &size ))
            format = targets;
        else if (convert_selection( display, import_window, current_selection, string, &type, &data, &size ))
            format = string;
    }

    changed = (changed ||
               rendered_formats ||
               last_selection != current_selection ||
               last_owner != owner ||
               last_format != format ||
               last_type != type ||
               last_size != size ||
               memcmp( last_data, data, size ));

    if (!changed)
    {
        HeapFree( GetProcessHeap(), 0, data );
        return FALSE;
    }
1882 1883

    if (!OpenClipboard( clipboard_hwnd )) return FALSE;
1884
    TRACE( "selection changed, importing\n" );
1885 1886
    EmptyClipboard();
    is_clipboard_owner = TRUE;
1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897
    rendered_formats = 0;

    if (format) format->import( type, data, size );

    HeapFree( GetProcessHeap(), 0, last_data );
    last_selection = current_selection;
    last_owner = owner;
    last_format = format;
    last_type = type;
    last_data = data;
    last_size = size;
1898 1899
    last_clipboard_update = GetTickCount64();
    CloseClipboard();
1900
    SetTimer( clipboard_hwnd, 1, SELECTION_UPDATE_DELAY, NULL );
1901 1902
    return TRUE;
}
1903 1904


1905 1906 1907 1908 1909 1910 1911 1912 1913 1914
/**************************************************************************
 *		update_clipboard
 *
 * Periodically update the clipboard while the selection is owned by an X11 app.
 */
BOOL update_clipboard( HWND hwnd )
{
    if (hwnd != clipboard_hwnd) return TRUE;
    if (!is_clipboard_owner) return TRUE;
    if (GetTickCount64() - last_clipboard_update <= SELECTION_UPDATE_DELAY) return TRUE;
1915
    return request_selection_contents( thread_display(), FALSE );
1916 1917
}

1918

1919 1920 1921 1922 1923 1924 1925 1926
/**************************************************************************
 *		clipboard_wndproc
 *
 * Window procedure for the clipboard manager.
 */
static LRESULT CALLBACK clipboard_wndproc( HWND hwnd, UINT msg, WPARAM wp, LPARAM lp )
{
    switch (msg)
1927
    {
1928 1929 1930 1931 1932 1933 1934
    case WM_NCCREATE:
        return TRUE;
    case WM_CLIPBOARDUPDATE:
        if (is_clipboard_owner) break;  /* ignore our own changes */
        acquire_selection( thread_init_display() );
        break;
    case WM_RENDERFORMAT:
1935
        if (render_format( wp )) rendered_formats++;
1936
        break;
1937 1938 1939 1940
    case WM_TIMER:
        if (!is_clipboard_owner) break;
        request_selection_contents( thread_display(), FALSE );
        break;
1941 1942 1943
    case WM_DESTROYCLIPBOARD:
        TRACE( "WM_DESTROYCLIPBOARD: lost ownership\n" );
        is_clipboard_owner = FALSE;
1944
        KillTimer( hwnd, 1 );
1945
        break;
1946
    }
1947
    return DefWindowProcW( hwnd, msg, wp, lp );
1948
}
1949

1950

1951
/**************************************************************************
1952 1953 1954
 *		wait_clipboard_mutex
 *
 * Make sure that there's only one clipboard thread per window station.
1955
 */
1956
static BOOL wait_clipboard_mutex(void)
1957
{
1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977
    static const WCHAR prefix[] = {'_','_','w','i','n','e','_','c','l','i','p','b','o','a','r','d','_'};
    WCHAR buffer[MAX_PATH + sizeof(prefix) / sizeof(WCHAR)];
    HANDLE mutex;

    memcpy( buffer, prefix, sizeof(prefix) );
    if (!GetUserObjectInformationW( GetProcessWindowStation(), UOI_NAME,
                                    buffer + sizeof(prefix) / sizeof(WCHAR),
                                    sizeof(buffer) - sizeof(prefix), NULL ))
    {
        ERR( "failed to get winstation name\n" );
        return FALSE;
    }
    mutex = CreateMutexW( NULL, TRUE, buffer );
    if (GetLastError() == ERROR_ALREADY_EXISTS)
    {
        TRACE( "waiting for mutex %s\n", debugstr_w( buffer ));
        WaitForSingleObject( mutex, INFINITE );
    }
    return TRUE;
}
1978

1979

1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993
/**************************************************************************
 *		clipboard_thread
 *
 * Thread running inside the desktop process to manage the clipboard
 */
static DWORD WINAPI clipboard_thread( void *arg )
{
    static const WCHAR clipboard_classname[] = {'_','_','w','i','n','e','_','c','l','i','p','b','o','a','r','d','_','m','a','n','a','g','e','r',0};
    XSetWindowAttributes attr;
    WNDCLASSW class;
    MSG msg;

    if (!wait_clipboard_mutex()) return 0;

1994
    clipboard_display = thread_init_display();
1995
    attr.event_mask = PropertyChangeMask;
1996
    import_window = XCreateWindow( clipboard_display, root_window, 0, 0, 1, 1, 0, CopyFromParent,
1997 1998
                                   InputOutput, CopyFromParent, CWEventMask, &attr );
    if (!import_window)
1999
    {
2000 2001
        ERR( "failed to create import window\n" );
        return 0;
2002
    }
2003

2004 2005 2006 2007 2008
    memset( &class, 0, sizeof(class) );
    class.lpfnWndProc   = clipboard_wndproc;
    class.lpszClassName = clipboard_classname;

    if (!RegisterClassW( &class ) && GetLastError() != ERROR_CLASS_ALREADY_EXISTS)
2009
    {
2010 2011
        ERR( "could not register clipboard window class err %u\n", GetLastError() );
        return 0;
2012
    }
2013 2014
    if (!(clipboard_hwnd = CreateWindowW( clipboard_classname, NULL, 0, 0, 0, 0, 0,
                                          HWND_MESSAGE, 0, 0, NULL )))
2015
    {
2016 2017
        ERR( "failed to create clipboard window err %u\n", GetLastError() );
        return 0;
2018
    }
2019 2020 2021 2022

    clipboard_thread_id = GetCurrentThreadId();
    AddClipboardFormatListener( clipboard_hwnd );
    register_builtin_formats();
2023
    request_selection_contents( clipboard_display, TRUE );
2024 2025 2026 2027

    TRACE( "clipboard thread %04x running\n", GetCurrentThreadId() );
    while (GetMessageW( &msg, 0, 0, 0 )) DispatchMessageW( &msg );
    return 0;
2028
}
2029

2030

2031 2032 2033 2034 2035 2036 2037
/**************************************************************************
 *		X11DRV_UpdateClipboard
 */
void CDECL X11DRV_UpdateClipboard(void)
{
    static ULONG last_update;
    ULONG now;
2038
    DWORD_PTR ret;
2039

2040
    if (GetCurrentThreadId() == clipboard_thread_id) return;
2041 2042
    now = GetTickCount();
    if ((int)(now - last_update) <= SELECTION_UPDATE_DELAY) return;
2043 2044 2045
    if (SendMessageTimeoutW( GetClipboardOwner(), WM_X11DRV_UPDATE_CLIPBOARD, 0, 0,
                             SMTO_ABORTIFHUNG, 5000, &ret ) && ret)
        last_update = now;
2046
}
2047 2048 2049 2050 2051


/***********************************************************************
 *           X11DRV_HandleSelectionRequest
 */
2052
BOOL X11DRV_SelectionRequest( HWND hwnd, XEvent *xev )
2053
{
2054
    XSelectionRequestEvent *event = &xev->xselectionrequest;
2055
    Display *display = event->display;
2056
    XEvent result;
2057 2058
    Atom rprop = None;

2059 2060 2061 2062 2063 2064 2065
    TRACE( "got request on %lx for selection %s target %s win %lx prop %s\n",
           event->owner, debugstr_xatom( event->selection ), debugstr_xatom( event->target ),
           event->requestor, debugstr_xatom( event->property ));

    if (event->owner != selection_window) goto done;
    if ((event->selection != x11drv_atom(CLIPBOARD)) &&
        (!use_primary_selection || event->selection != XA_PRIMARY)) goto done;
2066 2067 2068 2069 2070 2071 2072 2073

    /* If the specified property is None the requestor is an obsolete client.
     * We support these by using the specified target atom as the reply property.
     */
    rprop = event->property;
    if( rprop == None )
        rprop = event->target;

2074
    if (!export_selection( display, event->requestor, rprop, event->target ))
2075
        rprop = None;  /* report failure to client */
2076

2077 2078 2079 2080 2081 2082 2083 2084 2085 2086
done:
    result.xselection.type = SelectionNotify;
    result.xselection.display = display;
    result.xselection.requestor = event->requestor;
    result.xselection.selection = event->selection;
    result.xselection.property = rprop;
    result.xselection.target = event->target;
    result.xselection.time = event->time;
    TRACE( "sending SelectionNotify for %s to %lx\n", debugstr_xatom( rprop ), event->requestor );
    XSendEvent( display, event->requestor, False, NoEventMask, &result );
2087
    return FALSE;
2088 2089 2090 2091 2092 2093
}


/***********************************************************************
 *           X11DRV_SelectionClear
 */
2094
BOOL X11DRV_SelectionClear( HWND hwnd, XEvent *xev )
2095
{
2096
    XSelectionClearEvent *event = &xev->xselectionclear;
2097 2098 2099 2100 2101

    if (event->window != selection_window) return FALSE;
    if (event->selection != x11drv_atom(CLIPBOARD)) return FALSE;

    release_selection( event->display, event->time );
2102
    request_selection_contents( event->display, TRUE );
2103
    return FALSE;
2104
}
2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117


/**************************************************************************
 *		X11DRV_InitClipboard
 */
void X11DRV_InitClipboard(void)
{
    DWORD id;
    HANDLE handle = CreateThread( NULL, 0, clipboard_thread, NULL, 0, &id );

    if (handle) CloseHandle( handle );
    else ERR( "failed to create clipboard thread\n" );
}