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sugar-toolkit-gtk3/src/sugar/eggdesktopfile.c
Marco Pesenti Gritti 50f79e6323 First go at session management. Not asking review since 
it's a bunch of ugly C code imported from gnome-session.
Will clean it up a bit but I don't plan to make it too shiny :)
2008-06-06 19:13:10 +02:00

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/* eggdesktopfile.c - Freedesktop.Org Desktop Files
* Copyright (C) 2007 Novell, Inc.
*
* Based on gnome-desktop-item.c
* Copyright (C) 1999, 2000 Red Hat Inc.
* Copyright (C) 2001 George Lebl
*
* 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 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; see the file COPYING.LIB. If not,
* write to the Free Software Foundation, Inc., 59 Temple Place -
* Suite 330, Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "eggdesktopfile.h"
#include <string.h>
#include <unistd.h>
#include <glib/gi18n.h>
#include <gdk/gdk.h>
#include <gtk/gtkwindow.h>
#include <gdk/gdkx.h>
struct EggDesktopFile {
GKeyFile *key_file;
char *source;
char *name, *icon;
EggDesktopFileType type;
char document_code;
};
/**
* egg_desktop_file_new:
* @desktop_file_path: path to a Freedesktop-style Desktop file
* @error: error pointer
*
* Creates a new #EggDesktopFile for @desktop_file.
*
* Return value: the new #EggDesktopFile, or %NULL on error.
**/
EggDesktopFile *
egg_desktop_file_new (const char *desktop_file_path, GError **error)
{
GKeyFile *key_file;
key_file = g_key_file_new ();
if (!g_key_file_load_from_file (key_file, desktop_file_path, 0, error))
{
g_key_file_free (key_file);
return NULL;
}
return egg_desktop_file_new_from_key_file (key_file, desktop_file_path,
error);
}
/**
* egg_desktop_file_new_from_data_dirs:
* @desktop_file_path: relative path to a Freedesktop-style Desktop file
* @error: error pointer
*
* Looks for @desktop_file_path in the paths returned from
* g_get_user_data_dir() and g_get_system_data_dirs(), and creates
* a new #EggDesktopFile from it.
*
* Return value: the new #EggDesktopFile, or %NULL on error.
**/
EggDesktopFile *
egg_desktop_file_new_from_data_dirs (const char *desktop_file_path,
GError **error)
{
EggDesktopFile *desktop_file;
GKeyFile *key_file;
char *full_path;
key_file = g_key_file_new ();
if (!g_key_file_load_from_data_dirs (key_file, desktop_file_path,
&full_path, 0, error))
{
g_key_file_free (key_file);
return NULL;
}
desktop_file = egg_desktop_file_new_from_key_file (key_file,
full_path,
error);
g_free (full_path);
return desktop_file;
}
/**
* egg_desktop_file_new_from_key_file:
* @key_file: a #GKeyFile representing a desktop file
* @source: the path or URI that @key_file was loaded from, or %NULL
* @error: error pointer
*
* Creates a new #EggDesktopFile for @key_file. Assumes ownership of
* @key_file (on success or failure); you should consider @key_file to
* be freed after calling this function.
*
* Return value: the new #EggDesktopFile, or %NULL on error.
**/
EggDesktopFile *
egg_desktop_file_new_from_key_file (GKeyFile *key_file,
const char *source,
GError **error)
{
EggDesktopFile *desktop_file;
char *version, *type;
if (!g_key_file_has_group (key_file, EGG_DESKTOP_FILE_GROUP))
{
g_set_error (error, EGG_DESKTOP_FILE_ERROR,
EGG_DESKTOP_FILE_ERROR_INVALID,
_("File is not a valid .desktop file"));
g_key_file_free (key_file);
return NULL;
}
version = g_key_file_get_value (key_file, EGG_DESKTOP_FILE_GROUP,
EGG_DESKTOP_FILE_KEY_VERSION,
NULL);
if (version)
{
double version_num;
char *end;
version_num = g_ascii_strtod (version, &end);
if (*end)
{
g_warning ("Invalid Version string '%s' in %s",
version, source ? source : "(unknown)");
}
else if (version_num > 1.0)
{
g_set_error (error, EGG_DESKTOP_FILE_ERROR,
EGG_DESKTOP_FILE_ERROR_INVALID,
_("Unrecognized desktop file Version '%s'"), version);
g_free (version);
g_key_file_free (key_file);
return NULL;
}
else
g_free (version);
}
desktop_file = g_new0 (EggDesktopFile, 1);
desktop_file->key_file = key_file;
if (g_path_is_absolute (source))
desktop_file->source = g_filename_to_uri (source, NULL, NULL);
else
desktop_file->source = g_strdup (source);
desktop_file->name = g_key_file_get_string (key_file, EGG_DESKTOP_FILE_GROUP,
EGG_DESKTOP_FILE_KEY_NAME, error);
if (!desktop_file->name)
{
egg_desktop_file_free (desktop_file);
return NULL;
}
type = g_key_file_get_string (key_file, EGG_DESKTOP_FILE_GROUP,
EGG_DESKTOP_FILE_KEY_TYPE, error);
if (!type)
{
egg_desktop_file_free (desktop_file);
return NULL;
}
if (!strcmp (type, "Application"))
{
char *exec, *p;
desktop_file->type = EGG_DESKTOP_FILE_TYPE_APPLICATION;
exec = g_key_file_get_string (key_file,
EGG_DESKTOP_FILE_GROUP,
EGG_DESKTOP_FILE_KEY_EXEC,
error);
if (!exec)
{
egg_desktop_file_free (desktop_file);
return NULL;
}
/* See if it takes paths or URIs or neither */
for (p = exec; *p; p++)
{
if (*p == '%')
{
if (p[1] == '\0' || strchr ("FfUu", p[1]))
{
desktop_file->document_code = p[1];
break;
}
p++;
}
}
g_free (exec);
}
else if (!strcmp (type, "Link"))
{
char *url;
desktop_file->type = EGG_DESKTOP_FILE_TYPE_LINK;
url = g_key_file_get_string (key_file,
EGG_DESKTOP_FILE_GROUP,
EGG_DESKTOP_FILE_KEY_URL,
error);
if (!url)
{
egg_desktop_file_free (desktop_file);
return NULL;
}
g_free (url);
}
else if (!strcmp (type, "Directory"))
desktop_file->type = EGG_DESKTOP_FILE_TYPE_DIRECTORY;
else
desktop_file->type = EGG_DESKTOP_FILE_TYPE_UNRECOGNIZED;
g_free (type);
/* Check the Icon key */
desktop_file->icon = g_key_file_get_string (key_file,
EGG_DESKTOP_FILE_GROUP,
EGG_DESKTOP_FILE_KEY_ICON,
NULL);
if (desktop_file->icon && !g_path_is_absolute (desktop_file->icon))
{
char *ext;
/* Lots of .desktop files still get this wrong */
ext = strrchr (desktop_file->icon, '.');
if (ext && (!strcmp (ext, ".png") ||
!strcmp (ext, ".xpm") ||
!strcmp (ext, ".svg")))
{
g_warning ("Desktop file '%s' has malformed Icon key '%s'"
"(should not include extension)",
source ? source : "(unknown)",
desktop_file->icon);
*ext = '\0';
}
}
return desktop_file;
}
/**
* egg_desktop_file_free:
* @desktop_file: an #EggDesktopFile
*
* Frees @desktop_file.
**/
void
egg_desktop_file_free (EggDesktopFile *desktop_file)
{
g_key_file_free (desktop_file->key_file);
g_free (desktop_file->source);
g_free (desktop_file->name);
g_free (desktop_file->icon);
g_free (desktop_file);
}
/**
* egg_desktop_file_get_source:
* @desktop_file: an #EggDesktopFile
*
* Gets the URI that @desktop_file was loaded from.
*
* Return value: @desktop_file's source URI
**/
const char *
egg_desktop_file_get_source (EggDesktopFile *desktop_file)
{
return desktop_file->source;
}
/**
* egg_desktop_file_get_desktop_file_type:
* @desktop_file: an #EggDesktopFile
*
* Gets the desktop file type of @desktop_file.
*
* Return value: @desktop_file's type
**/
EggDesktopFileType
egg_desktop_file_get_desktop_file_type (EggDesktopFile *desktop_file)
{
return desktop_file->type;
}
/**
* egg_desktop_file_get_name:
* @desktop_file: an #EggDesktopFile
*
* Gets the (localized) value of @desktop_file's "Name" key.
*
* Return value: the application/link name
**/
const char *
egg_desktop_file_get_name (EggDesktopFile *desktop_file)
{
return desktop_file->name;
}
/**
* egg_desktop_file_get_icon:
* @desktop_file: an #EggDesktopFile
*
* Gets the value of @desktop_file's "Icon" key.
*
* If the icon string is a full path (that is, if g_path_is_absolute()
* returns %TRUE when called on it), it points to a file containing an
* unthemed icon. If the icon string is not a full path, it is the
* name of a themed icon, which can be looked up with %GtkIconTheme,
* or passed directly to a theme-aware widget like %GtkImage or
* %GtkCellRendererPixbuf.
*
* Return value: the icon path or name
**/
const char *
egg_desktop_file_get_icon (EggDesktopFile *desktop_file)
{
return desktop_file->icon;
}
gboolean
egg_desktop_file_has_key (EggDesktopFile *desktop_file,
const char *key,
GError **error)
{
return g_key_file_has_key (desktop_file->key_file,
EGG_DESKTOP_FILE_GROUP, key,
error);
}
char *
egg_desktop_file_get_string (EggDesktopFile *desktop_file,
const char *key,
GError **error)
{
return g_key_file_get_string (desktop_file->key_file,
EGG_DESKTOP_FILE_GROUP, key,
error);
}
char *
egg_desktop_file_get_locale_string (EggDesktopFile *desktop_file,
const char *key,
const char *locale,
GError **error)
{
return g_key_file_get_locale_string (desktop_file->key_file,
EGG_DESKTOP_FILE_GROUP, key, locale,
error);
}
gboolean
egg_desktop_file_get_boolean (EggDesktopFile *desktop_file,
const char *key,
GError **error)
{
return g_key_file_get_boolean (desktop_file->key_file,
EGG_DESKTOP_FILE_GROUP, key,
error);
}
double
egg_desktop_file_get_numeric (EggDesktopFile *desktop_file,
const char *key,
GError **error)
{
#if 0
return g_key_file_get_double (desktop_file->key_file,
EGG_DESKTOP_FILE_GROUP, key,
error);
#else
return 0.0;
#endif
}
char **
egg_desktop_file_get_string_list (EggDesktopFile *desktop_file,
const char *key,
gsize *length,
GError **error)
{
return g_key_file_get_string_list (desktop_file->key_file,
EGG_DESKTOP_FILE_GROUP, key, length,
error);
}
char **
egg_desktop_file_get_locale_string_list (EggDesktopFile *desktop_file,
const char *key,
const char *locale,
gsize *length,
GError **error)
{
return g_key_file_get_locale_string_list (desktop_file->key_file,
EGG_DESKTOP_FILE_GROUP, key,
locale, length,
error);
}
/**
* egg_desktop_file_can_launch:
* @desktop_file: an #EggDesktopFile
* @desktop_environment: the name of the running desktop environment,
* or %NULL
*
* Tests if @desktop_file can/should be launched in the current
* environment. If @desktop_environment is non-%NULL, @desktop_file's
* "OnlyShowIn" and "NotShowIn" keys are checked to make sure that
* this desktop_file is appropriate for the named environment.
*
* Furthermore, if @desktop_file has type
* %EGG_DESKTOP_FILE_TYPE_APPLICATION, its "TryExec" key (if any) is
* also checked, to make sure the binary it points to exists.
*
* egg_desktop_file_can_launch() does NOT check the value of the
* "Hidden" key.
*
* Return value: %TRUE if @desktop_file can be launched
**/
gboolean
egg_desktop_file_can_launch (EggDesktopFile *desktop_file,
const char *desktop_environment)
{
char *try_exec, *found_program;
char **only_show_in, **not_show_in;
gboolean found;
int i;
if (desktop_file->type != EGG_DESKTOP_FILE_TYPE_APPLICATION &&
desktop_file->type != EGG_DESKTOP_FILE_TYPE_LINK)
return FALSE;
if (desktop_environment)
{
only_show_in = g_key_file_get_string_list (desktop_file->key_file,
EGG_DESKTOP_FILE_GROUP,
EGG_DESKTOP_FILE_KEY_ONLY_SHOW_IN,
NULL, NULL);
if (only_show_in)
{
for (i = 0, found = FALSE; only_show_in[i] && !found; i++)
{
if (!strcmp (only_show_in[i], desktop_environment))
found = TRUE;
}
g_strfreev (only_show_in);
if (!found)
return FALSE;
}
not_show_in = g_key_file_get_string_list (desktop_file->key_file,
EGG_DESKTOP_FILE_GROUP,
EGG_DESKTOP_FILE_KEY_NOT_SHOW_IN,
NULL, NULL);
if (not_show_in)
{
for (i = 0, found = FALSE; not_show_in[i] && !found; i++)
{
if (!strcmp (not_show_in[i], desktop_environment))
found = TRUE;
}
g_strfreev (not_show_in);
if (found)
return FALSE;
}
}
if (desktop_file->type == EGG_DESKTOP_FILE_TYPE_APPLICATION)
{
try_exec = g_key_file_get_string (desktop_file->key_file,
EGG_DESKTOP_FILE_GROUP,
EGG_DESKTOP_FILE_KEY_TRY_EXEC,
NULL);
if (try_exec)
{
found_program = g_find_program_in_path (try_exec);
g_free (try_exec);
if (!found_program)
return FALSE;
g_free (found_program);
}
}
return TRUE;
}
/**
* egg_desktop_file_accepts_documents:
* @desktop_file: an #EggDesktopFile
*
* Tests if @desktop_file represents an application that can accept
* documents on the command line.
*
* Return value: %TRUE or %FALSE
**/
gboolean
egg_desktop_file_accepts_documents (EggDesktopFile *desktop_file)
{
return desktop_file->document_code != 0;
}
/**
* egg_desktop_file_accepts_multiple:
* @desktop_file: an #EggDesktopFile
*
* Tests if @desktop_file can accept multiple documents at once.
*
* If this returns %FALSE, you can still pass multiple documents to
* egg_desktop_file_launch(), but that will result in multiple copies
* of the application being launched. See egg_desktop_file_launch()
* for more details.
*
* Return value: %TRUE or %FALSE
**/
gboolean
egg_desktop_file_accepts_multiple (EggDesktopFile *desktop_file)
{
return (desktop_file->document_code == 'F' ||
desktop_file->document_code == 'U');
}
/**
* egg_desktop_file_accepts_uris:
* @desktop_file: an #EggDesktopFile
*
* Tests if @desktop_file can accept (non-"file:") URIs as documents to
* open.
*
* Return value: %TRUE or %FALSE
**/
gboolean
egg_desktop_file_accepts_uris (EggDesktopFile *desktop_file)
{
return (desktop_file->document_code == 'U' ||
desktop_file->document_code == 'u');
}
static void
append_quoted_word (GString *str,
const char *s,
gboolean in_single_quotes,
gboolean in_double_quotes)
{
const char *p;
if (!in_single_quotes && !in_double_quotes)
g_string_append_c (str, '\'');
else if (!in_single_quotes && in_double_quotes)
g_string_append (str, "\"'");
if (!strchr (s, '\''))
g_string_append (str, s);
else
{
for (p = s; *p != '\0'; p++)
{
if (*p == '\'')
g_string_append (str, "'\\''");
else
g_string_append_c (str, *p);
}
}
if (!in_single_quotes && !in_double_quotes)
g_string_append_c (str, '\'');
else if (!in_single_quotes && in_double_quotes)
g_string_append (str, "'\"");
}
static void
do_percent_subst (EggDesktopFile *desktop_file,
char code,
GString *str,
GSList **documents,
gboolean in_single_quotes,
gboolean in_double_quotes)
{
GSList *d;
char *doc;
switch (code)
{
case '%':
g_string_append_c (str, '%');
break;
case 'F':
case 'U':
for (d = *documents; d; d = d->next)
{
doc = d->data;
g_string_append (str, " ");
append_quoted_word (str, doc, in_single_quotes, in_double_quotes);
}
*documents = NULL;
break;
case 'f':
case 'u':
if (*documents)
{
doc = (*documents)->data;
g_string_append (str, " ");
append_quoted_word (str, doc, in_single_quotes, in_double_quotes);
*documents = (*documents)->next;
}
break;
case 'i':
if (desktop_file->icon)
{
g_string_append (str, "--icon ");
append_quoted_word (str, desktop_file->icon,
in_single_quotes, in_double_quotes);
}
break;
case 'c':
if (desktop_file->name)
{
append_quoted_word (str, desktop_file->name,
in_single_quotes, in_double_quotes);
}
break;
case 'k':
if (desktop_file->source)
{
append_quoted_word (str, desktop_file->source,
in_single_quotes, in_double_quotes);
}
break;
case 'D':
case 'N':
case 'd':
case 'n':
case 'v':
case 'm':
/* Deprecated; skip */
break;
default:
g_warning ("Unrecognized %%-code '%%%c' in Exec", code);
break;
}
}
static char *
parse_exec (EggDesktopFile *desktop_file,
GSList **documents,
GError **error)
{
char *exec, *p, *command;
gboolean escape, single_quot, double_quot;
GString *gs;
exec = g_key_file_get_string (desktop_file->key_file,
EGG_DESKTOP_FILE_GROUP,
EGG_DESKTOP_FILE_KEY_EXEC,
error);
if (!exec)
return NULL;
/* Build the command */
gs = g_string_new (NULL);
escape = single_quot = double_quot = FALSE;
for (p = exec; *p != '\0'; p++)
{
if (escape)
{
escape = FALSE;
g_string_append_c (gs, *p);
}
else if (*p == '\\')
{
if (!single_quot)
escape = TRUE;
g_string_append_c (gs, *p);
}
else if (*p == '\'')
{
g_string_append_c (gs, *p);
if (!single_quot && !double_quot)
single_quot = TRUE;
else if (single_quot)
single_quot = FALSE;
}
else if (*p == '"')
{
g_string_append_c (gs, *p);
if (!single_quot && !double_quot)
double_quot = TRUE;
else if (double_quot)
double_quot = FALSE;
}
else if (*p == '%' && p[1])
{
do_percent_subst (desktop_file, p[1], gs, documents,
single_quot, double_quot);
p++;
}
else
g_string_append_c (gs, *p);
}
g_free (exec);
command = g_string_free (gs, FALSE);
/* Prepend "xdg-terminal " if needed (FIXME: use gvfs) */
if (g_key_file_has_key (desktop_file->key_file,
EGG_DESKTOP_FILE_GROUP,
EGG_DESKTOP_FILE_KEY_TERMINAL,
NULL))
{
GError *terminal_error = NULL;
gboolean use_terminal =
g_key_file_get_boolean (desktop_file->key_file,
EGG_DESKTOP_FILE_GROUP,
EGG_DESKTOP_FILE_KEY_TERMINAL,
&terminal_error);
if (terminal_error)
{
g_free (command);
g_propagate_error (error, terminal_error);
return NULL;
}
if (use_terminal)
{
gs = g_string_new ("xdg-terminal ");
append_quoted_word (gs, command, FALSE, FALSE);
g_free (command);
command = g_string_free (gs, FALSE);
}
}
return command;
}
static GSList *
translate_document_list (EggDesktopFile *desktop_file, GSList *documents)
{
gboolean accepts_uris = egg_desktop_file_accepts_uris (desktop_file);
GSList *ret, *d;
for (d = documents, ret = NULL; d; d = d->next)
{
const char *document = d->data;
gboolean is_uri = !g_path_is_absolute (document);
char *translated;
if (accepts_uris)
{
if (is_uri)
translated = g_strdup (document);
else
translated = g_filename_to_uri (document, NULL, NULL);
}
else
{
if (is_uri)
translated = g_filename_from_uri (document, NULL, NULL);
else
translated = g_strdup (document);
}
if (translated)
ret = g_slist_prepend (ret, translated);
}
return g_slist_reverse (ret);
}
static void
free_document_list (GSList *documents)
{
GSList *d;
for (d = documents; d; d = d->next)
g_free (d->data);
g_slist_free (documents);
}
/**
* egg_desktop_file_parse_exec:
* @desktop_file: a #EggDesktopFile
* @documents: a list of document paths or URIs
* @error: error pointer
*
* Parses @desktop_file's Exec key, inserting @documents into it, and
* returns the result.
*
* If @documents contains non-file: URIs and @desktop_file does not
* accept URIs, those URIs will be ignored. Likewise, if @documents
* contains more elements than @desktop_file accepts, the extra
* documents will be ignored.
*
* Return value: the parsed Exec string
**/
char *
egg_desktop_file_parse_exec (EggDesktopFile *desktop_file,
GSList *documents,
GError **error)
{
GSList *translated, *docs;
char *command;
docs = translated = translate_document_list (desktop_file, documents);
command = parse_exec (desktop_file, &docs, error);
free_document_list (translated);
return command;
}
static gboolean
parse_link (EggDesktopFile *desktop_file,
EggDesktopFile **app_desktop_file,
GSList **documents,
GError **error)
{
char *url;
GKeyFile *key_file;
url = g_key_file_get_string (desktop_file->key_file,
EGG_DESKTOP_FILE_GROUP,
EGG_DESKTOP_FILE_KEY_URL,
error);
if (!url)
return FALSE;
*documents = g_slist_prepend (NULL, url);
/* FIXME: use gvfs */
key_file = g_key_file_new ();
g_key_file_set_string (key_file, EGG_DESKTOP_FILE_GROUP,
EGG_DESKTOP_FILE_KEY_NAME,
"xdg-open");
g_key_file_set_string (key_file, EGG_DESKTOP_FILE_GROUP,
EGG_DESKTOP_FILE_KEY_TYPE,
"Application");
g_key_file_set_string (key_file, EGG_DESKTOP_FILE_GROUP,
EGG_DESKTOP_FILE_KEY_EXEC,
"xdg-open %u");
*app_desktop_file = egg_desktop_file_new_from_key_file (key_file, NULL, NULL);
return TRUE;
}
#ifdef HAVE_GDK_X11_DISPLAY_BROADCAST_STARTUP_MESSAGE
static char *
start_startup_notification (GdkDisplay *display,
EggDesktopFile *desktop_file,
const char *argv0,
int screen,
int workspace,
guint32 launch_time)
{
static int sequence = 0;
char *startup_id;
char *description, *wmclass;
char *screen_str, *workspace_str;
if (g_key_file_has_key (desktop_file->key_file,
EGG_DESKTOP_FILE_GROUP,
EGG_DESKTOP_FILE_KEY_STARTUP_NOTIFY,
NULL))
{
if (!g_key_file_get_boolean (desktop_file->key_file,
EGG_DESKTOP_FILE_GROUP,
EGG_DESKTOP_FILE_KEY_STARTUP_NOTIFY,
NULL))
return NULL;
wmclass = NULL;
}
else
{
wmclass = g_key_file_get_string (desktop_file->key_file,
EGG_DESKTOP_FILE_GROUP,
EGG_DESKTOP_FILE_KEY_STARTUP_WM_CLASS,
NULL);
if (!wmclass)
return NULL;
}
if (launch_time == (guint32)-1)
launch_time = gdk_x11_display_get_user_time (display);
startup_id = g_strdup_printf ("%s-%lu-%s-%s-%d_TIME%lu",
g_get_prgname (),
(unsigned long)getpid (),
g_get_host_name (),
argv0,
sequence++,
(unsigned long)launch_time);
description = g_strdup_printf (_("Starting %s"), desktop_file->name);
screen_str = g_strdup_printf ("%d", screen);
workspace_str = workspace == -1 ? NULL : g_strdup_printf ("%d", workspace);
gdk_x11_display_broadcast_startup_message (display, "new",
"ID", startup_id,
"NAME", desktop_file->name,
"SCREEN", screen_str,
"BIN", argv0,
"ICON", desktop_file->icon,
"DESKTOP", workspace_str,
"DESCRIPTION", description,
"WMCLASS", wmclass,
NULL);
g_free (description);
g_free (wmclass);
g_free (screen_str);
g_free (workspace_str);
return startup_id;
}
static void
end_startup_notification (GdkDisplay *display,
const char *startup_id)
{
gdk_x11_display_broadcast_startup_message (display, "remove",
"ID", startup_id,
NULL);
}
#define EGG_DESKTOP_FILE_SN_TIMEOUT_LENGTH (30 /* seconds */ * 1000)
typedef struct {
GdkDisplay *display;
char *startup_id;
} StartupNotificationData;
static gboolean
startup_notification_timeout (gpointer data)
{
StartupNotificationData *sn_data = data;
end_startup_notification (sn_data->display, sn_data->startup_id);
g_object_unref (sn_data->display);
g_free (sn_data->startup_id);
g_free (sn_data);
return FALSE;
}
static void
set_startup_notification_timeout (GdkDisplay *display,
const char *startup_id)
{
StartupNotificationData *sn_data;
sn_data = g_new (StartupNotificationData, 1);
sn_data->display = g_object_ref (display);
sn_data->startup_id = g_strdup (startup_id);
g_timeout_add (EGG_DESKTOP_FILE_SN_TIMEOUT_LENGTH,
startup_notification_timeout, sn_data);
}
#endif /* HAVE_GDK_X11_DISPLAY_BROADCAST_STARTUP_MESSAGE */
extern char **environ;
static GPtrArray *
array_putenv (GPtrArray *env, char *variable)
{
int i, keylen;
if (!env)
{
env = g_ptr_array_new ();
for (i = 0; environ[i]; i++)
g_ptr_array_add (env, g_strdup (environ[i]));
}
keylen = strcspn (variable, "=");
/* Remove old value of key */
for (i = 0; i < env->len; i++)
{
char *envvar = env->pdata[i];
if (!strncmp (envvar, variable, keylen) && envvar[keylen] == '=')
{
g_free (envvar);
g_ptr_array_remove_index_fast (env, i);
break;
}
}
/* Add new value */
g_ptr_array_add (env, g_strdup (variable));
return env;
}
static gboolean
egg_desktop_file_launchv (EggDesktopFile *desktop_file,
GSList *documents, va_list args,
GError **error)
{
EggDesktopFileLaunchOption option;
GSList *translated_documents = NULL, *docs;
char *command, **argv;
int argc, i, screen_num;
gboolean success, current_success;
GdkDisplay *display;
char *startup_id;
GPtrArray *env = NULL;
char **variables = NULL;
GdkScreen *screen = NULL;
int workspace = -1;
const char *directory = NULL;
guint32 launch_time = (guint32)-1;
GSpawnFlags flags = G_SPAWN_SEARCH_PATH;
GSpawnChildSetupFunc setup_func = NULL;
gpointer setup_data = NULL;
GPid *ret_pid = NULL;
int *ret_stdin = NULL, *ret_stdout = NULL, *ret_stderr = NULL;
char **ret_startup_id = NULL;
if (documents && desktop_file->document_code == 0)
{
g_set_error (error, EGG_DESKTOP_FILE_ERROR,
EGG_DESKTOP_FILE_ERROR_NOT_LAUNCHABLE,
_("Application does not accept documents on command line"));
return FALSE;
}
/* Read the options: technically it's incorrect for the caller to
* NULL-terminate the list of options (rather than 0-terminating
* it), but NULL-terminating lets us use G_GNUC_NULL_TERMINATED,
* it's more consistent with other glib/gtk methods, and it will
* work as long as sizeof (int) <= sizeof (NULL), and NULL is
* represented as 0. (Which is true everywhere we care about.)
*/
while ((option = va_arg (args, EggDesktopFileLaunchOption)))
{
switch (option)
{
case EGG_DESKTOP_FILE_LAUNCH_CLEARENV:
if (env)
g_ptr_array_free (env, TRUE);
env = g_ptr_array_new ();
break;
case EGG_DESKTOP_FILE_LAUNCH_PUTENV:
variables = va_arg (args, char **);
for (i = 0; variables[i]; i++)
env = array_putenv (env, variables[i]);
break;
case EGG_DESKTOP_FILE_LAUNCH_SCREEN:
screen = va_arg (args, GdkScreen *);
break;
case EGG_DESKTOP_FILE_LAUNCH_WORKSPACE:
workspace = va_arg (args, int);
break;
case EGG_DESKTOP_FILE_LAUNCH_DIRECTORY:
directory = va_arg (args, const char *);
break;
case EGG_DESKTOP_FILE_LAUNCH_TIME:
launch_time = va_arg (args, guint32);
break;
case EGG_DESKTOP_FILE_LAUNCH_FLAGS:
flags |= va_arg (args, GSpawnFlags);
/* Make sure they didn't set any flags that don't make sense. */
flags &= ~G_SPAWN_FILE_AND_ARGV_ZERO;
break;
case EGG_DESKTOP_FILE_LAUNCH_SETUP_FUNC:
setup_func = va_arg (args, GSpawnChildSetupFunc);
setup_data = va_arg (args, gpointer);
break;
case EGG_DESKTOP_FILE_LAUNCH_RETURN_PID:
ret_pid = va_arg (args, GPid *);
break;
case EGG_DESKTOP_FILE_LAUNCH_RETURN_STDIN_PIPE:
ret_stdin = va_arg (args, int *);
break;
case EGG_DESKTOP_FILE_LAUNCH_RETURN_STDOUT_PIPE:
ret_stdout = va_arg (args, int *);
break;
case EGG_DESKTOP_FILE_LAUNCH_RETURN_STDERR_PIPE:
ret_stderr = va_arg (args, int *);
break;
case EGG_DESKTOP_FILE_LAUNCH_RETURN_STARTUP_ID:
ret_startup_id = va_arg (args, char **);
break;
default:
g_set_error (error, EGG_DESKTOP_FILE_ERROR,
EGG_DESKTOP_FILE_ERROR_UNRECOGNIZED_OPTION,
_("Unrecognized launch option: %d"),
GPOINTER_TO_INT (option));
success = FALSE;
goto out;
}
}
if (screen)
{
char *display_name = gdk_screen_make_display_name (screen);
char *display_env = g_strdup_printf ("DISPLAY=%s", display_name);
env = array_putenv (env, display_env);
g_free (display_name);
g_free (display_env);
display = gdk_screen_get_display (screen);
}
else
{
display = gdk_display_get_default ();
screen = gdk_display_get_default_screen (display);
}
screen_num = gdk_screen_get_number (screen);
translated_documents = translate_document_list (desktop_file, documents);
docs = translated_documents;
success = FALSE;
do
{
command = parse_exec (desktop_file, &docs, error);
if (!command)
goto out;
if (!g_shell_parse_argv (command, &argc, &argv, error))
{
g_free (command);
goto out;
}
g_free (command);
#ifdef HAVE_GDK_X11_DISPLAY_BROADCAST_STARTUP_MESSAGE
startup_id = start_startup_notification (display, desktop_file,
argv[0], screen_num,
workspace, launch_time);
if (startup_id)
{
char *startup_id_env = g_strdup_printf ("DESKTOP_STARTUP_ID=%s",
startup_id);
env = array_putenv (env, startup_id_env);
g_free (startup_id_env);
}
#else
startup_id = NULL;
#endif /* HAVE_GDK_X11_DISPLAY_BROADCAST_STARTUP_MESSAGE */
if (env != NULL)
{
/* Add NULL item in the end of array */
g_ptr_array_add (env, NULL);
}
current_success =
g_spawn_async_with_pipes (directory,
argv,
env ? (char **)(env->pdata) : NULL,
flags,
setup_func, setup_data,
ret_pid,
ret_stdin, ret_stdout, ret_stderr,
error);
g_strfreev (argv);
if (startup_id)
{
#ifdef HAVE_GDK_X11_DISPLAY_BROADCAST_STARTUP_MESSAGE
if (current_success)
{
set_startup_notification_timeout (display, startup_id);
if (ret_startup_id)
*ret_startup_id = startup_id;
else
g_free (startup_id);
}
else
#endif /* HAVE_GDK_X11_DISPLAY_BROADCAST_STARTUP_MESSAGE */
g_free (startup_id);
}
else if (ret_startup_id)
*ret_startup_id = NULL;
if (current_success)
{
/* If we successfully launch any instances of the app, make
* sure we return TRUE and don't set @error.
*/
success = TRUE;
error = NULL;
/* Also, only set the output params on the first one */
ret_pid = NULL;
ret_stdin = ret_stdout = ret_stderr = NULL;
ret_startup_id = NULL;
}
}
while (docs && current_success);
out:
if (env)
{
g_ptr_array_free (env, TRUE);
}
free_document_list (translated_documents);
return success;
}
/**
* egg_desktop_file_launch:
* @desktop_file: an #EggDesktopFile
* @documents: a list of URIs or paths to documents to open
* @error: error pointer
* @...: additional options
*
* Launches @desktop_file with the given arguments. Additional options
* can be specified as follows:
*
* %EGG_DESKTOP_FILE_LAUNCH_CLEARENV: (no arguments)
* clears the environment in the child process
* %EGG_DESKTOP_FILE_LAUNCH_PUTENV: (char **variables)
* adds the NAME=VALUE strings in the given %NULL-terminated
* array to the child process's environment
* %EGG_DESKTOP_FILE_LAUNCH_SCREEN: (GdkScreen *screen)
* causes the application to be launched on the given screen
* %EGG_DESKTOP_FILE_LAUNCH_WORKSPACE: (int workspace)
* causes the application to be launched on the given workspace
* %EGG_DESKTOP_FILE_LAUNCH_DIRECTORY: (char *dir)
* causes the application to be launched in the given directory
* %EGG_DESKTOP_FILE_LAUNCH_TIME: (guint32 launch_time)
* sets the "launch time" for the application. If the user
* interacts with another window after @launch_time but before
* the launched application creates its first window, the window
* manager may choose to not give focus to the new application.
* Passing 0 for @launch_time will explicitly request that the
* application not receive focus.
* %EGG_DESKTOP_FILE_LAUNCH_FLAGS (GSpawnFlags flags)
* Sets additional #GSpawnFlags to use. See g_spawn_async() for
* more details.
* %EGG_DESKTOP_FILE_LAUNCH_SETUP_FUNC (GSpawnChildSetupFunc, gpointer)
* Sets the child setup callback and the data to pass to it.
* (See g_spawn_async() for more details.)
*
* %EGG_DESKTOP_FILE_LAUNCH_RETURN_PID (GPid **pid)
* On a successful launch, sets *@pid to the PID of the launched
* application.
* %EGG_DESKTOP_FILE_LAUNCH_RETURN_STARTUP_ID (char **startup_id)
* On a successful launch, sets *@startup_id to the Startup
* Notification "startup id" of the launched application.
* %EGG_DESKTOP_FILE_LAUNCH_RETURN_STDIN_PIPE (int *fd)
* On a successful launch, sets *@fd to the file descriptor of
* a pipe connected to the application's stdin.
* %EGG_DESKTOP_FILE_LAUNCH_RETURN_STDOUT_PIPE (int *fd)
* On a successful launch, sets *@fd to the file descriptor of
* a pipe connected to the application's stdout.
* %EGG_DESKTOP_FILE_LAUNCH_RETURN_STDERR_PIPE (int *fd)
* On a successful launch, sets *@fd to the file descriptor of
* a pipe connected to the application's stderr.
*
* The options should be terminated with a single %NULL.
*
* If @documents contains multiple documents, but
* egg_desktop_file_accepts_multiple() returns %FALSE for
* @desktop_file, then egg_desktop_file_launch() will actually launch
* multiple instances of the application. In that case, the return
* value (as well as any values passed via
* %EGG_DESKTOP_FILE_LAUNCH_RETURN_PID, etc) will only reflect the
* first instance of the application that was launched (but the
* %EGG_DESKTOP_FILE_LAUNCH_SETUP_FUNC will be called for each
* instance).
*
* Return value: %TRUE if the application was successfully launched.
**/
gboolean
egg_desktop_file_launch (EggDesktopFile *desktop_file,
GSList *documents, GError **error,
...)
{
va_list args;
gboolean success;
EggDesktopFile *app_desktop_file;
switch (desktop_file->type)
{
case EGG_DESKTOP_FILE_TYPE_APPLICATION:
va_start (args, error);
success = egg_desktop_file_launchv (desktop_file, documents,
args, error);
va_end (args);
break;
case EGG_DESKTOP_FILE_TYPE_LINK:
if (documents)
{
g_set_error (error, EGG_DESKTOP_FILE_ERROR,
EGG_DESKTOP_FILE_ERROR_NOT_LAUNCHABLE,
_("Can't pass document URIs to a 'Type=Link' desktop entry"));
return FALSE;
}
if (!parse_link (desktop_file, &app_desktop_file, &documents, error))
return FALSE;
va_start (args, error);
success = egg_desktop_file_launchv (app_desktop_file, documents,
args, error);
va_end (args);
egg_desktop_file_free (app_desktop_file);
free_document_list (documents);
break;
default:
g_set_error (error, EGG_DESKTOP_FILE_ERROR,
EGG_DESKTOP_FILE_ERROR_NOT_LAUNCHABLE,
_("Not a launchable item"));
success = FALSE;
break;
}
return success;
}
GQuark
egg_desktop_file_error_quark (void)
{
return g_quark_from_static_string ("egg-desktop_file-error-quark");
}
G_LOCK_DEFINE_STATIC (egg_desktop_file);
static EggDesktopFile *egg_desktop_file;
/**
* egg_set_desktop_file:
* @desktop_file_path: path to the application's desktop file
*
* Creates an #EggDesktopFile for the application from the data at
* @desktop_file_path. This will also call g_set_application_name()
* with the localized application name from the desktop file, and
* gtk_window_set_default_icon_name() or
* gtk_window_set_default_icon_from_file() with the application's
* icon. Other code may use additional information from the desktop
* file.
*
* Note that for thread safety reasons, this function can only
* be called once.
**/
void
egg_set_desktop_file (const char *desktop_file_path)
{
GError *error = NULL;
G_LOCK (egg_desktop_file);
if (egg_desktop_file)
egg_desktop_file_free (egg_desktop_file);
egg_desktop_file = egg_desktop_file_new (desktop_file_path, &error);
if (error)
{
g_warning ("Could not load desktop file '%s': %s",
desktop_file_path, error->message);
g_error_free (error);
}
/* Set localized application name and default window icon */
if (egg_desktop_file->name)
g_set_application_name (egg_desktop_file->name);
if (egg_desktop_file->icon)
{
if (g_path_is_absolute (egg_desktop_file->icon))
gtk_window_set_default_icon_from_file (egg_desktop_file->icon, NULL);
else
gtk_window_set_default_icon_name (egg_desktop_file->icon);
}
G_UNLOCK (egg_desktop_file);
}
/**
* egg_get_desktop_file:
*
* Gets the application's #EggDesktopFile, as set by
* egg_set_desktop_file().
*
* Return value: the #EggDesktopFile, or %NULL if it hasn't been set.
**/
EggDesktopFile *
egg_get_desktop_file (void)
{
EggDesktopFile *retval;
G_LOCK (egg_desktop_file);
retval = egg_desktop_file;
G_UNLOCK (egg_desktop_file);
return retval;
}
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