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server: Store length of window text instead of null-terminating it. 

Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Alexandre Julliard 2020-03-21 11:40:18 +01:00
parent 78846662ec
commit a88973a5f9
1 changed files with 13 additions and 16 deletions
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29
server/window.c
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@ -88,6 +88,7 @@ struct window
DPI_AWARENESS dpi_awareness; /* DPI awareness mode */
lparam_t user_data; /* user-specific data */
WCHAR *text; /* window caption text */
data_size_t text_len; /* length of window caption */
unsigned int paint_flags; /* various painting flags */
int prop_inuse; /* number of in-use window properties */
int prop_alloc; /* number of allocated window properties */
@ -506,6 +507,7 @@ static struct window *create_window( struct window *parent, struct window *owner
win->dpi = 0;
win->user_data = 0;
win->text = NULL;
win->text_len = 0;
win->paint_flags = 0;
win->prop_inuse = 0;
win->prop_alloc = 0;
@ -2407,10 +2409,10 @@ DECL_HANDLER(get_window_text)
{
struct window *win = get_window( req->handle );
if (win && win->text)
if (win && win->text_len)
{
reply->length = strlenW( win->text );
set_reply_data( win->text, min( reply->length * sizeof(WCHAR), get_reply_max_size() ));
reply->length = win->text_len / sizeof(WCHAR);
set_reply_data( win->text, min( win->text_len, get_reply_max_size() ));
}
}
@ -2418,21 +2420,16 @@ DECL_HANDLER(get_window_text)
/* set the window text */
DECL_HANDLER(set_window_text)
{
data_size_t len;
WCHAR *text = NULL;
struct window *win = get_window( req->handle );
if (win)
{
WCHAR *text = NULL;
data_size_t len = get_req_data_size() / sizeof(WCHAR);
if (len)
{
if (!(text = mem_alloc( (len+1) * sizeof(WCHAR) ))) return;
memcpy( text, get_req_data(), len * sizeof(WCHAR) );
text[len] = 0;
}
free( win->text );
win->text = text;
}
if (!win) return;
len = (get_req_data_size() / sizeof(WCHAR)) * sizeof(WCHAR);
if (len && !(text = memdup( get_req_data(), len ))) return;
free( win->text );
win->text = text;
win->text_len = len;
}