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glib/gio/gdesktopappinfo.c
Cosimo Cecchi 6e3f927901 Bug 551887 – Docs for g_desktop_app_info_new_from_filename () aren't 
2008-09-14  Cosimo Cecchi  <cosimoc@gnome.org>

	Bug 551887 – Docs for g_desktop_app_info_new_from_filename ()
	aren't clear.

	* gdesktopappinfo.c: add a note in the docs clarifying what the
	"filename" parameter really is.

svn path=/trunk/; revision=7481
2008-09-13 23:47:41 +00:00

2600 lines
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/* GIO - GLib Input, Output and Streaming Library
*
* Copyright (C) 2006-2007 Red Hat, Inc.
* Copyright © 2007 Ryan Lortie
*
* 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; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*
* Author: Alexander Larsson <alexl@redhat.com>
*/
#include "config.h"
#include <errno.h>
#include <string.h>
#include <unistd.h>
#include <sys/wait.h>
#ifdef HAVE_CRT_EXTERNS_H
#include <crt_externs.h>
#endif
#include "gcontenttypeprivate.h"
#include "gdesktopappinfo.h"
#include "gfile.h"
#include "gioerror.h"
#include "gthemedicon.h"
#include "gfileicon.h"
#include <glib/gstdio.h>
#include "glibintl.h"
#include "giomodule-priv.h"
#include "gappinfo.h"
#include "gioalias.h"
/**
* SECTION:gdesktopappinfo
* @short_description: Application information from desktop files
* @include: gio/gdesktopappinfo.h
*
* #GDesktopAppInfo is an implementation of #GAppInfo based on
* desktop files.
*
**/
#define DEFAULT_APPLICATIONS_GROUP "Default Applications"
#define ADDED_ASSOCIATIONS_GROUP "Added Associations"
#define REMOVED_ASSOCIATIONS_GROUP "Removed Associations"
#define MIME_CACHE_GROUP "MIME Cache"
static void g_desktop_app_info_iface_init (GAppInfoIface *iface);
static GList * get_all_desktop_entries_for_mime_type (const char *base_mime_type);
static void mime_info_cache_reload (const char *dir);
static gboolean g_desktop_app_info_ensure_saved (GDesktopAppInfo *info,
GError **error);
/**
* GDesktopAppInfo:
*
* Information about an installed application from a desktop file.
*/
struct _GDesktopAppInfo
{
GObject parent_instance;
char *desktop_id;
char *filename;
char *name;
/* FIXME: what about GenericName ? */
char *comment;
char *icon_name;
GIcon *icon;
char **only_show_in;
char **not_show_in;
char *try_exec;
char *exec;
char *binary;
char *path;
guint nodisplay : 1;
guint hidden : 1;
guint terminal : 1;
guint startup_notify : 1;
/* FIXME: what about StartupWMClass ? */
};
G_DEFINE_TYPE_WITH_CODE (GDesktopAppInfo, g_desktop_app_info, G_TYPE_OBJECT,
G_IMPLEMENT_INTERFACE (G_TYPE_APP_INFO,
g_desktop_app_info_iface_init))
static gpointer
search_path_init (gpointer data)
{
char **args = NULL;
const char * const *data_dirs;
const char *user_data_dir;
int i, length, j;
data_dirs = g_get_system_data_dirs ();
length = g_strv_length ((char **) data_dirs);
args = g_new (char *, length + 2);
j = 0;
user_data_dir = g_get_user_data_dir ();
args[j++] = g_build_filename (user_data_dir, "applications", NULL);
for (i = 0; i < length; i++)
args[j++] = g_build_filename (data_dirs[i],
"applications", NULL);
args[j++] = NULL;
return args;
}
static const char * const *
get_applications_search_path (void)
{
static GOnce once_init = G_ONCE_INIT;
return g_once (&once_init, search_path_init, NULL);
}
static void
g_desktop_app_info_finalize (GObject *object)
{
GDesktopAppInfo *info;
info = G_DESKTOP_APP_INFO (object);
g_free (info->desktop_id);
g_free (info->filename);
g_free (info->name);
g_free (info->comment);
g_free (info->icon_name);
if (info->icon)
g_object_unref (info->icon);
g_strfreev (info->only_show_in);
g_strfreev (info->not_show_in);
g_free (info->try_exec);
g_free (info->exec);
g_free (info->binary);
g_free (info->path);
G_OBJECT_CLASS (g_desktop_app_info_parent_class)->finalize (object);
}
static void
g_desktop_app_info_class_init (GDesktopAppInfoClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
gobject_class->finalize = g_desktop_app_info_finalize;
}
static void
g_desktop_app_info_init (GDesktopAppInfo *local)
{
}
static char *
binary_from_exec (const char *exec)
{
const char *p, *start;
p = exec;
while (*p == ' ')
p++;
start = p;
while (*p != ' ' && *p != 0)
p++;
return g_strndup (start, p - start);
}
/**
* g_desktop_app_info_new_from_keyfile:
* @key_file: an opened #GKeyFile
*
* Creates a new #GDesktopAppInfo.
*
* Returns: a new #GDesktopAppInfo or %NULL on error.
*
* Since: 2.18
**/
GDesktopAppInfo *
g_desktop_app_info_new_from_keyfile (GKeyFile *key_file)
{
GDesktopAppInfo *info;
char *start_group;
char *type;
char *try_exec;
start_group = g_key_file_get_start_group (key_file);
if (start_group == NULL || strcmp (start_group, G_KEY_FILE_DESKTOP_GROUP) != 0)
{
g_free (start_group);
return NULL;
}
g_free (start_group);
type = g_key_file_get_string (key_file,
G_KEY_FILE_DESKTOP_GROUP,
G_KEY_FILE_DESKTOP_KEY_TYPE,
NULL);
if (type == NULL || strcmp (type, G_KEY_FILE_DESKTOP_TYPE_APPLICATION) != 0)
{
g_free (type);
return NULL;
}
g_free (type);
try_exec = g_key_file_get_string (key_file,
G_KEY_FILE_DESKTOP_GROUP,
G_KEY_FILE_DESKTOP_KEY_TRY_EXEC,
NULL);
if (try_exec && try_exec[0] != '\0')
{
char *t;
t = g_find_program_in_path (try_exec);
if (t == NULL)
{
g_free (try_exec);
return NULL;
}
g_free (t);
}
info = g_object_new (G_TYPE_DESKTOP_APP_INFO, NULL);
info->filename = NULL;
info->name = g_key_file_get_locale_string (key_file, G_KEY_FILE_DESKTOP_GROUP, G_KEY_FILE_DESKTOP_KEY_NAME, NULL, NULL);
info->comment = g_key_file_get_locale_string (key_file, G_KEY_FILE_DESKTOP_GROUP, G_KEY_FILE_DESKTOP_KEY_COMMENT, NULL, NULL);
info->nodisplay = g_key_file_get_boolean (key_file, G_KEY_FILE_DESKTOP_GROUP, G_KEY_FILE_DESKTOP_KEY_NO_DISPLAY, NULL) != FALSE;
info->icon_name = g_key_file_get_locale_string (key_file, G_KEY_FILE_DESKTOP_GROUP, G_KEY_FILE_DESKTOP_KEY_ICON, NULL, NULL);
info->only_show_in = g_key_file_get_string_list (key_file, G_KEY_FILE_DESKTOP_GROUP, G_KEY_FILE_DESKTOP_KEY_ONLY_SHOW_IN, NULL, NULL);
info->not_show_in = g_key_file_get_string_list (key_file, G_KEY_FILE_DESKTOP_GROUP, G_KEY_FILE_DESKTOP_KEY_NOT_SHOW_IN, NULL, NULL);
info->try_exec = try_exec;
info->exec = g_key_file_get_string (key_file, G_KEY_FILE_DESKTOP_GROUP, G_KEY_FILE_DESKTOP_KEY_EXEC, NULL);
info->path = g_key_file_get_string (key_file, G_KEY_FILE_DESKTOP_GROUP, G_KEY_FILE_DESKTOP_KEY_PATH, NULL);
info->terminal = g_key_file_get_boolean (key_file, G_KEY_FILE_DESKTOP_GROUP, G_KEY_FILE_DESKTOP_KEY_TERMINAL, NULL) != FALSE;
info->startup_notify = g_key_file_get_boolean (key_file, G_KEY_FILE_DESKTOP_GROUP, G_KEY_FILE_DESKTOP_KEY_STARTUP_NOTIFY, NULL) != FALSE;
info->hidden = g_key_file_get_boolean (key_file, G_KEY_FILE_DESKTOP_GROUP, G_KEY_FILE_DESKTOP_KEY_HIDDEN, NULL) != FALSE;
info->icon = NULL;
if (info->icon_name)
{
if (g_path_is_absolute (info->icon_name))
{
GFile *file;
file = g_file_new_for_path (info->icon_name);
info->icon = g_file_icon_new (file);
g_object_unref (file);
}
else
info->icon = g_themed_icon_new (info->icon_name);
}
if (info->exec)
info->binary = binary_from_exec (info->exec);
return info;
}
/**
* g_desktop_app_info_new_from_filename:
* @filename: the path of a desktop file, in the GLib filename encoding
*
* Creates a new #GDesktopAppInfo.
*
* Returns: a new #GDesktopAppInfo or %NULL on error.
**/
GDesktopAppInfo *
g_desktop_app_info_new_from_filename (const char *filename)
{
GKeyFile *key_file;
GDesktopAppInfo *info = NULL;
key_file = g_key_file_new ();
if (g_key_file_load_from_file (key_file,
filename,
G_KEY_FILE_NONE,
NULL))
{
info = g_desktop_app_info_new_from_keyfile (key_file);
if (info)
info->filename = g_strdup (filename);
}
g_key_file_free (key_file);
return info;
}
/**
* g_desktop_app_info_new:
* @desktop_id: the desktop file id
*
* Creates a new #GDesktopAppInfo.
*
* Returns: a new #GDesktopAppInfo, or %NULL if no desktop file with that id
**/
GDesktopAppInfo *
g_desktop_app_info_new (const char *desktop_id)
{
GDesktopAppInfo *appinfo;
const char * const *dirs;
char *basename;
int i;
dirs = get_applications_search_path ();
basename = g_strdup (desktop_id);
for (i = 0; dirs[i] != NULL; i++)
{
char *filename;
char *p;
filename = g_build_filename (dirs[i], desktop_id, NULL);
appinfo = g_desktop_app_info_new_from_filename (filename);
g_free (filename);
if (appinfo != NULL)
goto found;
p = basename;
while ((p = strchr (p, '-')) != NULL)
{
*p = '/';
filename = g_build_filename (dirs[i], basename, NULL);
appinfo = g_desktop_app_info_new_from_filename (filename);
g_free (filename);
if (appinfo != NULL)
goto found;
*p = '-';
p++;
}
}
g_free (basename);
return NULL;
found:
g_free (basename);
appinfo->desktop_id = g_strdup (desktop_id);
if (g_desktop_app_info_get_is_hidden (appinfo))
{
g_object_unref (appinfo);
appinfo = NULL;
}
return appinfo;
}
static GAppInfo *
g_desktop_app_info_dup (GAppInfo *appinfo)
{
GDesktopAppInfo *info = G_DESKTOP_APP_INFO (appinfo);
GDesktopAppInfo *new_info;
new_info = g_object_new (G_TYPE_DESKTOP_APP_INFO, NULL);
new_info->filename = g_strdup (info->filename);
new_info->desktop_id = g_strdup (info->desktop_id);
new_info->name = g_strdup (info->name);
new_info->comment = g_strdup (info->comment);
new_info->nodisplay = info->nodisplay;
new_info->icon_name = g_strdup (info->icon_name);
new_info->icon = g_object_ref (info->icon);
new_info->only_show_in = g_strdupv (info->only_show_in);
new_info->not_show_in = g_strdupv (info->not_show_in);
new_info->try_exec = g_strdup (info->try_exec);
new_info->exec = g_strdup (info->exec);
new_info->binary = g_strdup (info->binary);
new_info->path = g_strdup (info->path);
new_info->hidden = info->hidden;
new_info->terminal = info->terminal;
new_info->startup_notify = info->startup_notify;
return G_APP_INFO (new_info);
}
static gboolean
g_desktop_app_info_equal (GAppInfo *appinfo1,
GAppInfo *appinfo2)
{
GDesktopAppInfo *info1 = G_DESKTOP_APP_INFO (appinfo1);
GDesktopAppInfo *info2 = G_DESKTOP_APP_INFO (appinfo2);
if (info1->desktop_id == NULL ||
info2->desktop_id == NULL)
return info1 == info2;
return strcmp (info1->desktop_id, info2->desktop_id) == 0;
}
static const char *
g_desktop_app_info_get_id (GAppInfo *appinfo)
{
GDesktopAppInfo *info = G_DESKTOP_APP_INFO (appinfo);
return info->desktop_id;
}
static const char *
g_desktop_app_info_get_name (GAppInfo *appinfo)
{
GDesktopAppInfo *info = G_DESKTOP_APP_INFO (appinfo);
if (info->name == NULL)
return _("Unnamed");
return info->name;
}
/**
* g_desktop_app_info_get_is_hidden:
* @info: a #GDesktopAppInfo.
*
* A desktop file is hidden if the Hidden key in it is
* set to True.
*
* Returns: %TRUE if hidden, %FALSE otherwise.
**/
gboolean
g_desktop_app_info_get_is_hidden (GDesktopAppInfo *info)
{
return info->hidden;
}
static const char *
g_desktop_app_info_get_description (GAppInfo *appinfo)
{
GDesktopAppInfo *info = G_DESKTOP_APP_INFO (appinfo);
return info->comment;
}
static const char *
g_desktop_app_info_get_executable (GAppInfo *appinfo)
{
GDesktopAppInfo *info = G_DESKTOP_APP_INFO (appinfo);
return info->binary;
}
static GIcon *
g_desktop_app_info_get_icon (GAppInfo *appinfo)
{
GDesktopAppInfo *info = G_DESKTOP_APP_INFO (appinfo);
return info->icon;
}
static char *
expand_macro_single (char macro, char *uri)
{
GFile *file;
char *result = NULL;
char *path;
file = g_file_new_for_uri (uri);
path = g_file_get_path (file);
g_object_unref (file);
switch (macro)
{
case 'u':
case 'U':
result = g_shell_quote (uri);
break;
case 'f':
case 'F':
if (path)
result = g_shell_quote (path);
break;
case 'd':
case 'D':
if (path)
result = g_shell_quote (g_path_get_dirname (path));
break;
case 'n':
case 'N':
if (path)
result = g_shell_quote (g_path_get_basename (path));
break;
}
g_free (path);
return result;
}
static void
expand_macro (char macro,
GString *exec,
GDesktopAppInfo *info,
GList **uri_list)
{
GList *uris = *uri_list;
char *expanded;
g_return_if_fail (exec != NULL);
switch (macro)
{
case 'u':
case 'f':
case 'd':
case 'n':
if (uris)
{
expanded = expand_macro_single (macro, uris->data);
if (expanded)
{
g_string_append (exec, expanded);
g_free (expanded);
}
uris = uris->next;
}
break;
case 'U':
case 'F':
case 'D':
case 'N':
while (uris)
{
expanded = expand_macro_single (macro, uris->data);
if (expanded)
{
g_string_append (exec, expanded);
g_free (expanded);
}
uris = uris->next;
if (uris != NULL && expanded)
g_string_append_c (exec, ' ');
}
break;
case 'i':
if (info->icon_name)
{
g_string_append (exec, "--icon ");
g_string_append (exec, info->icon_name);
}
break;
case 'c':
if (info->name)
g_string_append (exec, info->name);
break;
case 'k':
if (info->filename)
g_string_append (exec, info->filename);
break;
case 'm': /* deprecated */
break;
case '%':
g_string_append_c (exec, '%');
break;
}
*uri_list = uris;
}
static gboolean
expand_application_parameters (GDesktopAppInfo *info,
GList **uris,
int *argc,
char ***argv,
GError **error)
{
GList *uri_list = *uris;
const char *p = info->exec;
GString *expanded_exec = g_string_new (NULL);
gboolean res;
if (info->exec == NULL)
{
g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_FAILED,
_("Desktop file didn't specify Exec field"));
return FALSE;
}
while (*p)
{
if (p[0] == '%' && p[1] != '\0')
{
expand_macro (p[1], expanded_exec, info, uris);
p++;
}
else
g_string_append_c (expanded_exec, *p);
p++;
}
/* No file substitutions */
if (uri_list == *uris && uri_list != NULL)
{
/* If there is no macro default to %f. This is also what KDE does */
g_string_append_c (expanded_exec, ' ');
expand_macro ('f', expanded_exec, info, uris);
}
res = g_shell_parse_argv (expanded_exec->str, argc, argv, error);
g_string_free (expanded_exec, TRUE);
return res;
}
static gboolean
prepend_terminal_to_vector (int *argc,
char ***argv)
{
#ifndef G_OS_WIN32
char **real_argv;
int real_argc;
int i, j;
char **term_argv = NULL;
int term_argc = 0;
char *check;
char **the_argv;
g_return_val_if_fail (argc != NULL, FALSE);
g_return_val_if_fail (argv != NULL, FALSE);
/* sanity */
if(*argv == NULL)
*argc = 0;
the_argv = *argv;
/* compute size if not given */
if (*argc < 0)
{
for (i = 0; the_argv[i] != NULL; i++)
;
*argc = i;
}
term_argc = 2;
term_argv = g_new0 (char *, 3);
check = g_find_program_in_path ("gnome-terminal");
if (check != NULL)
{
term_argv[0] = check;
/* Note that gnome-terminal takes -x and
* as -e in gnome-terminal is broken we use that. */
term_argv[1] = g_strdup ("-x");
}
else
{
if (check == NULL)
check = g_find_program_in_path ("nxterm");
if (check == NULL)
check = g_find_program_in_path ("color-xterm");
if (check == NULL)
check = g_find_program_in_path ("rxvt");
if (check == NULL)
check = g_find_program_in_path ("xterm");
if (check == NULL)
check = g_find_program_in_path ("dtterm");
if (check == NULL)
{
check = g_strdup ("xterm");
g_warning ("couldn't find a terminal, falling back to xterm");
}
term_argv[0] = check;
term_argv[1] = g_strdup ("-e");
}
real_argc = term_argc + *argc;
real_argv = g_new (char *, real_argc + 1);
for (i = 0; i < term_argc; i++)
real_argv[i] = term_argv[i];
for (j = 0; j < *argc; j++, i++)
real_argv[i] = (char *)the_argv[j];
real_argv[i] = NULL;
g_free (*argv);
*argv = real_argv;
*argc = real_argc;
/* we use g_free here as we sucked all the inner strings
* out from it into real_argv */
g_free (term_argv);
return TRUE;
#else
return FALSE;
#endif /* G_OS_WIN32 */
}
/* '=' is the new '\0'.
* DO NOT CALL unless at least one string ends with '='
*/
static gboolean
is_env (const char *a,
const char *b)
{
while (*a == *b)
{
if (*a == 0 || *b == 0)
return FALSE;
if (*a == '=')
return TRUE;
a++;
b++;
}
return FALSE;
}
/* free with g_strfreev */
static char **
replace_env_var (char **old_environ,
const char *env_var,
const char *new_value)
{
int length, new_length;
int index, new_index;
char **new_environ;
int i, new_i;
/* do two things at once:
* - discover the length of the environment ('length')
* - find the location (if any) of the env var ('index')
*/
index = -1;
for (length = 0; old_environ[length]; length++)
{
/* if we already have it in our environment, replace */
if (is_env (old_environ[length], env_var))
index = length;
}
/* no current env var, no desired env value.
* this is easy :)
*/
if (new_value == NULL && index == -1)
return old_environ;
/* in all cases now, we will be using a modified environment.
* determine its length and allocated it.
*
* after this block:
* new_index = location to insert, if any
* new_length = length of the new array
* new_environ = the pointer array for the new environment
*/
if (new_value == NULL && index >= 0)
{
/* in this case, we will be removing an entry */
new_length = length - 1;
new_index = -1;
}
else if (new_value != NULL && index < 0)
{
/* in this case, we will be adding an entry to the end */
new_length = length + 1;
new_index = length;
}
else
/* in this case, we will be replacing the existing entry */
{
new_length = length;
new_index = index;
}
new_environ = g_malloc (sizeof (char *) * (new_length + 1));
new_environ[new_length] = NULL;
/* now we do the copying.
* for each entry in the new environment, we decide what to do
*/
i = 0;
for (new_i = 0; new_i < new_length; new_i++)
{
if (new_i == new_index)
{
/* insert our new item */
new_environ[new_i] = g_strconcat (env_var,
"=",
new_value,
NULL);
/* if we had an old entry, skip it now */
if (index >= 0)
i++;
}
else
{
/* if this is the old DESKTOP_STARTUP_ID, skip it */
if (i == index)
i++;
/* copy an old item */
new_environ[new_i] = g_strdup (old_environ[i]);
i++;
}
}
g_strfreev (old_environ);
return new_environ;
}
static GList *
uri_list_segment_to_files (GList *start,
GList *end)
{
GList *res;
GFile *file;
res = NULL;
while (start != NULL && start != end)
{
file = g_file_new_for_uri ((char *)start->data);
res = g_list_prepend (res, file);
start = start->next;
}
return g_list_reverse (res);
}
#ifdef HAVE__NSGETENVIRON
#define environ (*_NSGetEnviron())
#elif !defined(G_OS_WIN32)
/* According to the Single Unix Specification, environ is not in
* * any system header, although unistd.h often declares it.
* */
extern char **environ;
#endif
static gboolean
g_desktop_app_info_launch_uris (GAppInfo *appinfo,
GList *uris,
GAppLaunchContext *launch_context,
GError **error)
{
GDesktopAppInfo *info = G_DESKTOP_APP_INFO (appinfo);
gboolean completed = FALSE;
GList *old_uris;
GList *launched_files;
char **envp;
char **argv;
int argc;
char *display;
char *sn_id;
g_return_val_if_fail (appinfo != NULL, FALSE);
argv = NULL;
envp = NULL;
do
{
old_uris = uris;
if (!expand_application_parameters (info, &uris,
&argc, &argv, error))
goto out;
if (info->terminal && !prepend_terminal_to_vector (&argc, &argv))
{
g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_FAILED,
_("Unable to find terminal required for application"));
goto out;
}
sn_id = NULL;
if (launch_context)
{
launched_files = uri_list_segment_to_files (old_uris, uris);
display = g_app_launch_context_get_display (launch_context,
appinfo,
launched_files);
sn_id = NULL;
if (info->startup_notify)
sn_id = g_app_launch_context_get_startup_notify_id (launch_context,
appinfo,
launched_files);
if (display || sn_id)
{
#ifdef G_OS_WIN32
/* FIXME */
envp = g_new0 (char *, 1);
#else
envp = g_strdupv (environ);
#endif
if (display)
envp = replace_env_var (envp,
"DISPLAY",
display);
if (sn_id)
envp = replace_env_var (envp,
"DESKTOP_STARTUP_ID",
sn_id);
}
g_free (display);
g_list_foreach (launched_files, (GFunc)g_object_unref, NULL);
g_list_free (launched_files);
}
if (!g_spawn_async (info->path, /* working directory */
argv,
envp,
G_SPAWN_SEARCH_PATH /* flags */,
NULL /* child_setup */,
NULL /* data */,
NULL /* child_pid */,
error))
{
if (sn_id)
{
g_app_launch_context_launch_failed (launch_context, sn_id);
g_free (sn_id);
}
goto out;
}
g_free (sn_id);
g_strfreev (envp);
g_strfreev (argv);
envp = NULL;
argv = NULL;
}
while (uris != NULL);
completed = TRUE;
out:
g_strfreev (argv);
g_strfreev (envp);
return completed;
}
static gboolean
g_desktop_app_info_supports_uris (GAppInfo *appinfo)
{
GDesktopAppInfo *info = G_DESKTOP_APP_INFO (appinfo);
return info->exec &&
((strstr (info->exec, "%u") != NULL) ||
(strstr (info->exec, "%U") != NULL));
}
static gboolean
g_desktop_app_info_supports_files (GAppInfo *appinfo)
{
GDesktopAppInfo *info = G_DESKTOP_APP_INFO (appinfo);
return info->exec &&
((strstr (info->exec, "%f") != NULL) ||
(strstr (info->exec, "%F") != NULL));
}
static gboolean
g_desktop_app_info_launch (GAppInfo *appinfo,
GList *files,
GAppLaunchContext *launch_context,
GError **error)
{
GList *uris;
char *uri;
gboolean res;
uris = NULL;
while (files)
{
uri = g_file_get_uri (files->data);
uris = g_list_prepend (uris, uri);
files = files->next;
}
uris = g_list_reverse (uris);
res = g_desktop_app_info_launch_uris (appinfo, uris, launch_context, error);
g_list_foreach (uris, (GFunc)g_free, NULL);
g_list_free (uris);
return res;
}
G_LOCK_DEFINE_STATIC (g_desktop_env);
static gchar *g_desktop_env = NULL;
/**
* g_desktop_app_info_set_desktop_env:
* @desktop_env: a string specifying what desktop this is
*
* Sets the name of the desktop that the application is running in.
* This is used by g_app_info_should_show() to evaluate the
* <literal>OnlyShowIn</literal> and <literal>NotShowIn</literal>
* desktop entry fields.
*
* The <ulink url="http://standards.freedesktop.org/menu-spec/latest/">Desktop
* Menu specification</ulink> recognizes the following:
* <simplelist>
* <member>GNOME</member>
* <member>KDE</member>
* <member>ROX</member>
* <member>XFCE</member>
* <member>Old</member>
* </simplelist>
*
* Should be called only once; subsequent calls are ignored.
*/
void
g_desktop_app_info_set_desktop_env (const gchar *desktop_env)
{
G_LOCK (g_desktop_env);
if (!g_desktop_env)
g_desktop_env = g_strdup (desktop_env);
G_UNLOCK (g_desktop_env);
}
static gboolean
g_desktop_app_info_should_show (GAppInfo *appinfo)
{
GDesktopAppInfo *info = G_DESKTOP_APP_INFO (appinfo);
gboolean found;
const gchar *desktop_env;
int i;
if (info->nodisplay)
return FALSE;
G_LOCK (g_desktop_env);
desktop_env = g_desktop_env;
G_UNLOCK (g_desktop_env);
if (info->only_show_in)
{
if (desktop_env == NULL)
return FALSE;
found = FALSE;
for (i = 0; info->only_show_in[i] != NULL; i++)
{
if (strcmp (info->only_show_in[i], desktop_env) == 0)
{
found = TRUE;
break;
}
}
if (!found)
return FALSE;
}
if (info->not_show_in && desktop_env)
{
for (i = 0; info->not_show_in[i] != NULL; i++)
{
if (strcmp (info->not_show_in[i], desktop_env) == 0)
return FALSE;
}
}
return TRUE;
}
typedef enum {
APP_DIR,
MIMETYPE_DIR
} DirType;
static char *
ensure_dir (DirType type,
GError **error)
{
char *path, *display_name;
int errsv;
if (type == APP_DIR)
path = g_build_filename (g_get_user_data_dir (), "applications", NULL);
else
path = g_build_filename (g_get_user_data_dir (), "mime", "packages", NULL);
errno = 0;
if (g_mkdir_with_parents (path, 0700) == 0)
return path;
errsv = errno;
display_name = g_filename_display_name (path);
if (type == APP_DIR)
g_set_error (error, G_IO_ERROR, g_io_error_from_errno (errsv),
_("Can't create user application configuration folder %s: %s"),
display_name, g_strerror (errsv));
else
g_set_error (error, G_IO_ERROR, g_io_error_from_errno (errsv),
_("Can't create user MIME configuration folder %s: %s"),
display_name, g_strerror (errsv));
g_free (display_name);
g_free (path);
return NULL;
}
static gboolean
update_mimeapps_list (const char *desktop_id,
const char *content_type,
gboolean add_at_start,
gboolean add_at_end,
gboolean remove,
GError **error)
{
char *dirname, *filename;
GKeyFile *key_file;
gboolean load_succeeded, res;
char **old_list;
char **list;
gsize length, data_size;
char *data;
int i, j;
/* Don't add both at start and end */
g_assert (!(add_at_start && add_at_end));
dirname = ensure_dir (APP_DIR, error);
if (!dirname)
return FALSE;
filename = g_build_filename (dirname, "mimeapps.list", NULL);
g_free (dirname);
key_file = g_key_file_new ();
load_succeeded = g_key_file_load_from_file (key_file, filename, G_KEY_FILE_NONE, NULL);
if (!load_succeeded || !g_key_file_has_group (key_file, ADDED_ASSOCIATIONS_GROUP))
{
g_key_file_free (key_file);
key_file = g_key_file_new ();
}
/* Add to the right place in the list */
length = 0;
old_list = g_key_file_get_string_list (key_file, ADDED_ASSOCIATIONS_GROUP,
content_type, &length, NULL);
list = g_new (char *, 1 + length + 1);
i = 0;
if (add_at_start)
list[i++] = g_strdup (desktop_id);
if (old_list)
{
for (j = 0; old_list[j] != NULL; j++)
{
if (strcmp (old_list[j], desktop_id) != 0)
list[i++] = g_strdup (old_list[j]);
}
}
if (add_at_end)
list[i++] = g_strdup (desktop_id);
list[i] = NULL;
g_strfreev (old_list);
g_key_file_set_string_list (key_file,
ADDED_ASSOCIATIONS_GROUP,
content_type,
(const char * const *)list, i);
g_strfreev (list);
/* Remove from removed associations group (unless remove) */
length = 0;
old_list = g_key_file_get_string_list (key_file, REMOVED_ASSOCIATIONS_GROUP,
content_type, &length, NULL);
list = g_new (char *, 1 + length + 1);
i = 0;
if (remove)
list[i++] = g_strdup (desktop_id);
if (old_list)
{
for (j = 0; old_list[j] != NULL; j++)
{
if (strcmp (old_list[j], desktop_id) != 0)
list[i++] = g_strdup (old_list[j]);
}
}
list[i] = NULL;
g_strfreev (old_list);
if (list[0] == NULL)
g_key_file_remove_key (key_file,
REMOVED_ASSOCIATIONS_GROUP,
content_type,
NULL);
else
g_key_file_set_string_list (key_file,
REMOVED_ASSOCIATIONS_GROUP,
content_type,
(const char * const *)list, i);
g_strfreev (list);
data = g_key_file_to_data (key_file, &data_size, error);
g_key_file_free (key_file);
res = g_file_set_contents (filename, data, data_size, error);
mime_info_cache_reload (NULL);
g_free (filename);
g_free (data);
return res;
}
static gboolean
g_desktop_app_info_set_as_default_for_type (GAppInfo *appinfo,
const char *content_type,
GError **error)
{
GDesktopAppInfo *info = G_DESKTOP_APP_INFO (appinfo);
if (!g_desktop_app_info_ensure_saved (info, error))
return FALSE;
return update_mimeapps_list (info->desktop_id, content_type, TRUE, FALSE, FALSE, error);
}
static void
update_program_done (GPid pid,
gint status,
gpointer data)
{
/* Did the application exit correctly */
if (WIFEXITED (status) &&
WEXITSTATUS (status) == 0)
{
/* Here we could clean out any caches in use */
}
}
static void
run_update_command (char *command,
char *subdir)
{
char *argv[3] = {
NULL,
NULL,
NULL,
};
GPid pid = 0;
GError *error = NULL;
argv[0] = command;
argv[1] = g_build_filename (g_get_user_data_dir (), subdir, NULL);
if (g_spawn_async ("/", argv,
NULL, /* envp */
G_SPAWN_SEARCH_PATH |
G_SPAWN_STDOUT_TO_DEV_NULL |
G_SPAWN_STDERR_TO_DEV_NULL |
G_SPAWN_DO_NOT_REAP_CHILD,
NULL, NULL, /* No setup function */
&pid,
NULL))
g_child_watch_add (pid, update_program_done, NULL);
else
{
/* If we get an error at this point, it's quite likely the user doesn't
* have an installed copy of either 'update-mime-database' or
* 'update-desktop-database'. I don't think we want to popup an error
* dialog at this point, so we just do a g_warning to give the user a
* chance of debugging it.
*/
g_warning ("%s", error->message);
}
g_free (argv[1]);
}
static gboolean
g_desktop_app_info_set_as_default_for_extension (GAppInfo *appinfo,
const char *extension,
GError **error)
{
char *filename, *basename, *mimetype;
char *dirname;
gboolean res;
if (!g_desktop_app_info_ensure_saved (G_DESKTOP_APP_INFO (appinfo), error))
return FALSE;
dirname = ensure_dir (MIMETYPE_DIR, error);
if (!dirname)
return FALSE;
basename = g_strdup_printf ("user-extension-%s.xml", extension);
filename = g_build_filename (dirname, basename, NULL);
g_free (basename);
g_free (dirname);
mimetype = g_strdup_printf ("application/x-extension-%s", extension);
if (!g_file_test (filename, G_FILE_TEST_EXISTS))
{
char *contents;
contents =
g_strdup_printf ("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
"<mime-info xmlns=\"http://www.freedesktop.org/standards/shared-mime-info\">\n"
" <mime-type type=\"%s\">\n"
" <comment>%s document</comment>\n"
" <glob pattern=\"*.%s\"/>\n"
" </mime-type>\n"
"</mime-info>\n", mimetype, extension, extension);
g_file_set_contents (filename, contents, -1, NULL);
g_free (contents);
run_update_command ("update-mime-database", "mime");
}
g_free (filename);
res = g_desktop_app_info_set_as_default_for_type (appinfo,
mimetype,
error);
g_free (mimetype);
return res;
}
static gboolean
g_desktop_app_info_add_supports_type (GAppInfo *appinfo,
const char *content_type,
GError **error)
{
GDesktopAppInfo *info = G_DESKTOP_APP_INFO (appinfo);
if (!g_desktop_app_info_ensure_saved (G_DESKTOP_APP_INFO (info), error))
return FALSE;
return update_mimeapps_list (info->desktop_id, content_type, FALSE, TRUE, FALSE, error);
}
static gboolean
g_desktop_app_info_can_remove_supports_type (GAppInfo *appinfo)
{
return TRUE;
}
static gboolean
g_desktop_app_info_remove_supports_type (GAppInfo *appinfo,
const char *content_type,
GError **error)
{
GDesktopAppInfo *info = G_DESKTOP_APP_INFO (appinfo);
if (!g_desktop_app_info_ensure_saved (G_DESKTOP_APP_INFO (info), error))
return FALSE;
return update_mimeapps_list (info->desktop_id, content_type, FALSE, FALSE, TRUE, error);
}
static gboolean
g_desktop_app_info_ensure_saved (GDesktopAppInfo *info,
GError **error)
{
GKeyFile *key_file;
char *dirname;
char *filename;
char *data, *desktop_id;
gsize data_size;
int fd;
gboolean res;
if (info->filename != NULL)
return TRUE;
/* This is only used for object created with
* g_app_info_create_from_commandline. All other
* object should have a filename
*/
dirname = ensure_dir (APP_DIR, error);
if (!dirname)
return FALSE;
key_file = g_key_file_new ();
g_key_file_set_string (key_file, G_KEY_FILE_DESKTOP_GROUP,
"Encoding", "UTF-8");
g_key_file_set_string (key_file, G_KEY_FILE_DESKTOP_GROUP,
G_KEY_FILE_DESKTOP_KEY_VERSION, "1.0");
g_key_file_set_string (key_file, G_KEY_FILE_DESKTOP_GROUP,
G_KEY_FILE_DESKTOP_KEY_TYPE,
G_KEY_FILE_DESKTOP_TYPE_APPLICATION);
if (info->terminal)
g_key_file_set_boolean (key_file, G_KEY_FILE_DESKTOP_GROUP,
G_KEY_FILE_DESKTOP_KEY_TERMINAL, TRUE);
g_key_file_set_string (key_file, G_KEY_FILE_DESKTOP_GROUP,
G_KEY_FILE_DESKTOP_KEY_EXEC, info->exec);
g_key_file_set_string (key_file, G_KEY_FILE_DESKTOP_GROUP,
G_KEY_FILE_DESKTOP_KEY_NAME, info->name);
g_key_file_set_string (key_file, G_KEY_FILE_DESKTOP_GROUP,
G_KEY_FILE_DESKTOP_KEY_COMMENT, info->comment);
g_key_file_set_boolean (key_file, G_KEY_FILE_DESKTOP_GROUP,
G_KEY_FILE_DESKTOP_KEY_NO_DISPLAY, TRUE);
data = g_key_file_to_data (key_file, &data_size, NULL);
g_key_file_free (key_file);
desktop_id = g_strdup_printf ("userapp-%s-XXXXXX.desktop", info->name);
filename = g_build_filename (dirname, desktop_id, NULL);
g_free (desktop_id);
g_free (dirname);
fd = g_mkstemp (filename);
if (fd == -1)
{
char *display_name;
display_name = g_filename_display_name (filename);
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
_("Can't create user desktop file %s"), display_name);
g_free (display_name);
g_free (filename);
g_free (data);
return FALSE;
}
desktop_id = g_path_get_basename (filename);
close (fd);
res = g_file_set_contents (filename, data, data_size, error);
if (!res)
{
g_free (desktop_id);
g_free (filename);
return FALSE;
}
info->filename = filename;
info->desktop_id = desktop_id;
run_update_command ("update-desktop-database", "applications");
return TRUE;
}
/**
* g_app_info_create_from_commandline:
* @commandline: the commandline to use
* @application_name: the application name, or %NULL to use @commandline
* @flags: flags that can specify details of the created #GAppInfo
* @error: a #GError location to store the error occuring, %NULL to ignore.
*
* Creates a new #GAppInfo from the given information.
*
* Returns: new #GAppInfo for given command.
**/
GAppInfo *
g_app_info_create_from_commandline (const char *commandline,
const char *application_name,
GAppInfoCreateFlags flags,
GError **error)
{
char **split;
char *basename;
GDesktopAppInfo *info;
info = g_object_new (G_TYPE_DESKTOP_APP_INFO, NULL);
info->filename = NULL;
info->desktop_id = NULL;
info->terminal = flags & G_APP_INFO_CREATE_NEEDS_TERMINAL;
info->startup_notify = FALSE;
info->hidden = FALSE;
if (flags & G_APP_INFO_CREATE_SUPPORTS_URIS)
info->exec = g_strconcat (commandline, " %u", NULL);
else
info->exec = g_strconcat (commandline, " %f", NULL);
info->nodisplay = TRUE;
info->binary = binary_from_exec (info->exec);
if (application_name)
info->name = g_strdup (application_name);
else
{
/* FIXME: this should be more robust. Maybe g_shell_parse_argv and use argv[0] */
split = g_strsplit (commandline, " ", 2);
basename = g_path_get_basename (split[0]);
g_strfreev (split);
info->name = basename;
if (info->name == NULL)
info->name = g_strdup ("custom");
}
info->comment = g_strdup_printf (_("Custom definition for %s"), info->name);
return G_APP_INFO (info);
}
static void
g_desktop_app_info_iface_init (GAppInfoIface *iface)
{
iface->dup = g_desktop_app_info_dup;
iface->equal = g_desktop_app_info_equal;
iface->get_id = g_desktop_app_info_get_id;
iface->get_name = g_desktop_app_info_get_name;
iface->get_description = g_desktop_app_info_get_description;
iface->get_executable = g_desktop_app_info_get_executable;
iface->get_icon = g_desktop_app_info_get_icon;
iface->launch = g_desktop_app_info_launch;
iface->supports_uris = g_desktop_app_info_supports_uris;
iface->supports_files = g_desktop_app_info_supports_files;
iface->launch_uris = g_desktop_app_info_launch_uris;
iface->should_show = g_desktop_app_info_should_show;
iface->set_as_default_for_type = g_desktop_app_info_set_as_default_for_type;
iface->set_as_default_for_extension = g_desktop_app_info_set_as_default_for_extension;
iface->add_supports_type = g_desktop_app_info_add_supports_type;
iface->can_remove_supports_type = g_desktop_app_info_can_remove_supports_type;
iface->remove_supports_type = g_desktop_app_info_remove_supports_type;
}
static gboolean
app_info_in_list (GAppInfo *info,
GList *list)
{
while (list != NULL)
{
if (g_app_info_equal (info, list->data))
return TRUE;
list = list->next;
}
return FALSE;
}
/**
* g_app_info_get_all_for_type:
* @content_type: the content type to find a #GAppInfo for
*
* Gets a list of all #GAppInfo s for a given content type.
*
* Returns: #GList of #GAppInfo s for given @content_type
* or %NULL on error.
**/
GList *
g_app_info_get_all_for_type (const char *content_type)
{
GList *desktop_entries, *l;
GList *infos;
GDesktopAppInfo *info;
g_return_val_if_fail (content_type != NULL, NULL);
desktop_entries = get_all_desktop_entries_for_mime_type (content_type);
infos = NULL;
for (l = desktop_entries; l != NULL; l = l->next)
{
char *desktop_entry = l->data;
info = g_desktop_app_info_new (desktop_entry);
if (info)
{
if (app_info_in_list (G_APP_INFO (info), infos))
g_object_unref (info);
else
infos = g_list_prepend (infos, info);
}
g_free (desktop_entry);
}
g_list_free (desktop_entries);
return g_list_reverse (infos);
}
/**
* g_app_info_get_default_for_type:
* @content_type: the content type to find a #GAppInfo for
* @must_support_uris: if %TRUE, the #GAppInfo is expected to
* support URIs
*
* Gets the #GAppInfo that correspond to a given content type.
*
* Returns: #GAppInfo for given @content_type or %NULL on error.
**/
GAppInfo *
g_app_info_get_default_for_type (const char *content_type,
gboolean must_support_uris)
{
GList *desktop_entries, *l;
GAppInfo *info;
g_return_val_if_fail (content_type != NULL, NULL);
desktop_entries = get_all_desktop_entries_for_mime_type (content_type);
info = NULL;
for (l = desktop_entries; l != NULL; l = l->next)
{
char *desktop_entry = l->data;
info = (GAppInfo *)g_desktop_app_info_new (desktop_entry);
if (info)
{
if (must_support_uris && !g_app_info_supports_uris (info))
{
g_object_unref (info);
info = NULL;
}
else
break;
}
}
g_list_foreach (desktop_entries, (GFunc)g_free, NULL);
g_list_free (desktop_entries);
return info;
}
/**
* g_app_info_get_default_for_uri_scheme:
* @uri_scheme: a string containing a URI scheme.
*
* Gets the default application for launching applications
* using this URI scheme. A URI scheme is the initial part
* of the URI, up to but not including the ':', e.g. "http",
* "ftp" or "sip".
*
* Returns: #GAppInfo for given @uri_scheme or %NULL on error.
**/
GAppInfo *
g_app_info_get_default_for_uri_scheme (const char *uri_scheme)
{
static gsize lookup = 0;
if (g_once_init_enter (&lookup))
{
gsize setup_value = 1;
GDesktopAppInfoLookup *lookup_instance;
const char *use_this;
GIOExtensionPoint *ep;
GIOExtension *extension;
GList *l;
use_this = g_getenv ("GIO_USE_URI_ASSOCIATION");
/* Ensure vfs in modules loaded */
_g_io_modules_ensure_loaded ();
ep = g_io_extension_point_lookup (G_DESKTOP_APP_INFO_LOOKUP_EXTENSION_POINT_NAME);
lookup_instance = NULL;
if (use_this)
{
extension = g_io_extension_point_get_extension_by_name (ep, use_this);
if (extension)
lookup_instance = g_object_new (g_io_extension_get_type (extension), NULL);
}
if (lookup_instance == NULL)
{
for (l = g_io_extension_point_get_extensions (ep); l != NULL; l = l->next)
{
extension = l->data;
lookup_instance = g_object_new (g_io_extension_get_type (extension), NULL);
if (lookup_instance != NULL)
break;
}
}
if (lookup_instance != NULL)
setup_value = (gsize)lookup_instance;
g_once_init_leave (&lookup, setup_value);
}
if (lookup == 1)
return NULL;
return g_desktop_app_info_lookup_get_default_for_uri_scheme (G_DESKTOP_APP_INFO_LOOKUP (lookup),
uri_scheme);
}
static void
get_apps_from_dir (GHashTable *apps,
const char *dirname,
const char *prefix)
{
GDir *dir;
const char *basename;
char *filename, *subprefix, *desktop_id;
gboolean hidden;
GDesktopAppInfo *appinfo;
dir = g_dir_open (dirname, 0, NULL);
if (dir)
{
while ((basename = g_dir_read_name (dir)) != NULL)
{
filename = g_build_filename (dirname, basename, NULL);
if (g_str_has_suffix (basename, ".desktop"))
{
desktop_id = g_strconcat (prefix, basename, NULL);
/* Use _extended so we catch NULLs too (hidden) */
if (!g_hash_table_lookup_extended (apps, desktop_id, NULL, NULL))
{
appinfo = g_desktop_app_info_new_from_filename (filename);
if (appinfo && g_desktop_app_info_get_is_hidden (appinfo))
{
g_object_unref (appinfo);
appinfo = NULL;
hidden = TRUE;
}
if (appinfo || hidden)
{
g_hash_table_insert (apps, g_strdup (desktop_id), appinfo);
if (appinfo)
{
/* Reuse instead of strdup here */
appinfo->desktop_id = desktop_id;
desktop_id = NULL;
}
}
}
g_free (desktop_id);
}
else
{
if (g_file_test (filename, G_FILE_TEST_IS_DIR))
{
subprefix = g_strconcat (prefix, basename, "-", NULL);
get_apps_from_dir (apps, filename, subprefix);
g_free (subprefix);
}
}
g_free (filename);
}
g_dir_close (dir);
}
}
/**
* g_app_info_get_all:
*
* Gets a list of all of the applications currently registered
* on this system.
*
* For desktop files, this includes applications that have
* <literal>NoDisplay=true</literal> set or are excluded from
* display by means of <literal>OnlyShowIn</literal> or
* <literal>NotShowIn</literal>. See g_app_info_should_show().
* The returned list does not include applications which have
* the <literal>Hidden</literal> key set.
*
* Returns: a newly allocated #GList of references to #GAppInfo<!---->s.
**/
GList *
g_app_info_get_all (void)
{
const char * const *dirs;
GHashTable *apps;
GHashTableIter iter;
gpointer value;
int i;
GList *infos;
dirs = get_applications_search_path ();
apps = g_hash_table_new_full (g_str_hash, g_str_equal,
g_free, NULL);
for (i = 0; dirs[i] != NULL; i++)
get_apps_from_dir (apps, dirs[i], "");
infos = NULL;
g_hash_table_iter_init (&iter, apps);
while (g_hash_table_iter_next (&iter, NULL, &value))
{
if (value)
infos = g_list_prepend (infos, value);
}
g_hash_table_destroy (apps);
return g_list_reverse (infos);
}
/* Cacheing of mimeinfo.cache and defaults.list files */
typedef struct {
char *path;
GHashTable *mime_info_cache_map;
GHashTable *defaults_list_map;
GHashTable *mimeapps_list_added_map;
GHashTable *mimeapps_list_removed_map;
time_t mime_info_cache_timestamp;
time_t defaults_list_timestamp;
time_t mimeapps_list_timestamp;
} MimeInfoCacheDir;
typedef struct {
GList *dirs; /* mimeinfo.cache and defaults.list */
GHashTable *global_defaults_cache; /* global results of defaults.list lookup and validation */
time_t last_stat_time;
guint should_ping_mime_monitor : 1;
} MimeInfoCache;
static MimeInfoCache *mime_info_cache = NULL;
G_LOCK_DEFINE_STATIC (mime_info_cache);
static void mime_info_cache_dir_add_desktop_entries (MimeInfoCacheDir *dir,
const char *mime_type,
char **new_desktop_file_ids);
static MimeInfoCache * mime_info_cache_new (void);
static void
destroy_info_cache_value (gpointer key,
GList *value,
gpointer data)
{
g_list_foreach (value, (GFunc)g_free, NULL);
g_list_free (value);
}
static void
destroy_info_cache_map (GHashTable *info_cache_map)
{
g_hash_table_foreach (info_cache_map, (GHFunc)destroy_info_cache_value, NULL);
g_hash_table_destroy (info_cache_map);
}
static gboolean
mime_info_cache_dir_out_of_date (MimeInfoCacheDir *dir,
const char *cache_file,
time_t *timestamp)
{
struct stat buf;
char *filename;
filename = g_build_filename (dir->path, cache_file, NULL);
if (g_stat (filename, &buf) < 0)
{
g_free (filename);
return TRUE;
}
g_free (filename);
if (buf.st_mtime != *timestamp)
return TRUE;
return FALSE;
}
/* Call with lock held */
static gboolean
remove_all (gpointer key,
gpointer value,
gpointer user_data)
{
return TRUE;
}
static void
mime_info_cache_blow_global_cache (void)
{
g_hash_table_foreach_remove (mime_info_cache->global_defaults_cache,
remove_all, NULL);
}
static void
mime_info_cache_dir_init (MimeInfoCacheDir *dir)
{
GError *load_error;
GKeyFile *key_file;
gchar *filename, **mime_types;
int i;
struct stat buf;
load_error = NULL;
mime_types = NULL;
if (dir->mime_info_cache_map != NULL &&
!mime_info_cache_dir_out_of_date (dir, "mimeinfo.cache",
&dir->mime_info_cache_timestamp))
return;
if (dir->mime_info_cache_map != NULL)
destroy_info_cache_map (dir->mime_info_cache_map);
dir->mime_info_cache_map = g_hash_table_new_full (g_str_hash, g_str_equal,
(GDestroyNotify) g_free,
NULL);
key_file = g_key_file_new ();
filename = g_build_filename (dir->path, "mimeinfo.cache", NULL);
if (g_stat (filename, &buf) < 0)
goto error;
if (dir->mime_info_cache_timestamp > 0)
mime_info_cache->should_ping_mime_monitor = TRUE;
dir->mime_info_cache_timestamp = buf.st_mtime;
g_key_file_load_from_file (key_file, filename, G_KEY_FILE_NONE, &load_error);
g_free (filename);
filename = NULL;
if (load_error != NULL)
goto error;
mime_types = g_key_file_get_keys (key_file, MIME_CACHE_GROUP,
NULL, &load_error);
if (load_error != NULL)
goto error;
for (i = 0; mime_types[i] != NULL; i++)
{
gchar **desktop_file_ids;
char *unaliased_type;
desktop_file_ids = g_key_file_get_string_list (key_file,
MIME_CACHE_GROUP,
mime_types[i],
NULL,
NULL);
if (desktop_file_ids == NULL)
continue;
unaliased_type = _g_unix_content_type_unalias (mime_types[i]);
mime_info_cache_dir_add_desktop_entries (dir,
unaliased_type,
desktop_file_ids);
g_free (unaliased_type);
g_strfreev (desktop_file_ids);
}
g_strfreev (mime_types);
g_key_file_free (key_file);
return;
error:
g_free (filename);
g_key_file_free (key_file);
if (mime_types != NULL)
g_strfreev (mime_types);
if (load_error)
g_error_free (load_error);
}
static void
mime_info_cache_dir_init_defaults_list (MimeInfoCacheDir *dir)
{
GKeyFile *key_file;
GError *load_error;
gchar *filename, **mime_types;
char *unaliased_type;
char **desktop_file_ids;
int i;
struct stat buf;
load_error = NULL;
mime_types = NULL;
if (dir->defaults_list_map != NULL &&
!mime_info_cache_dir_out_of_date (dir, "defaults.list",
&dir->defaults_list_timestamp))
return;
if (dir->defaults_list_map != NULL)
g_hash_table_destroy (dir->defaults_list_map);
dir->defaults_list_map = g_hash_table_new_full (g_str_hash, g_str_equal,
g_free, (GDestroyNotify)g_strfreev);
key_file = g_key_file_new ();
filename = g_build_filename (dir->path, "defaults.list", NULL);
if (g_stat (filename, &buf) < 0)
goto error;
if (dir->defaults_list_timestamp > 0)
mime_info_cache->should_ping_mime_monitor = TRUE;
dir->defaults_list_timestamp = buf.st_mtime;
g_key_file_load_from_file (key_file, filename, G_KEY_FILE_NONE, &load_error);
g_free (filename);
filename = NULL;
if (load_error != NULL)
goto error;
mime_types = g_key_file_get_keys (key_file, DEFAULT_APPLICATIONS_GROUP,
NULL, NULL);
if (mime_types != NULL)
{
for (i = 0; mime_types[i] != NULL; i++)
{
desktop_file_ids = g_key_file_get_string_list (key_file,
DEFAULT_APPLICATIONS_GROUP,
mime_types[i],
NULL,
NULL);
if (desktop_file_ids == NULL)
continue;
unaliased_type = _g_unix_content_type_unalias (mime_types[i]);
g_hash_table_replace (dir->defaults_list_map,
unaliased_type,
desktop_file_ids);
}
g_strfreev (mime_types);
}
g_key_file_free (key_file);
return;
error:
g_free (filename);
g_key_file_free (key_file);
if (mime_types != NULL)
g_strfreev (mime_types);
if (load_error)
g_error_free (load_error);
}
static void
mime_info_cache_dir_init_mimeapps_list (MimeInfoCacheDir *dir)
{
GKeyFile *key_file;
GError *load_error;
gchar *filename, **mime_types;
char *unaliased_type;
char **desktop_file_ids;
int i;
struct stat buf;
load_error = NULL;
mime_types = NULL;
if (dir->mimeapps_list_added_map != NULL &&
!mime_info_cache_dir_out_of_date (dir, "mimeapps.list",
&dir->mimeapps_list_timestamp))
return;
if (dir->mimeapps_list_added_map != NULL)
g_hash_table_destroy (dir->mimeapps_list_added_map);
dir->mimeapps_list_added_map = g_hash_table_new_full (g_str_hash, g_str_equal,
g_free, (GDestroyNotify)g_strfreev);
if (dir->mimeapps_list_removed_map != NULL)
g_hash_table_destroy (dir->mimeapps_list_removed_map);
dir->mimeapps_list_removed_map = g_hash_table_new_full (g_str_hash, g_str_equal,
g_free, (GDestroyNotify)g_strfreev);
key_file = g_key_file_new ();
filename = g_build_filename (dir->path, "mimeapps.list", NULL);
if (g_stat (filename, &buf) < 0)
goto error;
if (dir->mimeapps_list_timestamp > 0)
mime_info_cache->should_ping_mime_monitor = TRUE;
dir->mimeapps_list_timestamp = buf.st_mtime;
g_key_file_load_from_file (key_file, filename, G_KEY_FILE_NONE, &load_error);
g_free (filename);
filename = NULL;
if (load_error != NULL)
goto error;
mime_types = g_key_file_get_keys (key_file, ADDED_ASSOCIATIONS_GROUP,
NULL, NULL);
if (mime_types != NULL)
{
for (i = 0; mime_types[i] != NULL; i++)
{
desktop_file_ids = g_key_file_get_string_list (key_file,
ADDED_ASSOCIATIONS_GROUP,
mime_types[i],
NULL,
NULL);
if (desktop_file_ids == NULL)
continue;
unaliased_type = _g_unix_content_type_unalias (mime_types[i]);
g_hash_table_replace (dir->mimeapps_list_added_map,
unaliased_type,
desktop_file_ids);
}
g_strfreev (mime_types);
}
mime_types = g_key_file_get_keys (key_file, REMOVED_ASSOCIATIONS_GROUP,
NULL, NULL);
if (mime_types != NULL)
{
for (i = 0; mime_types[i] != NULL; i++)
{
desktop_file_ids = g_key_file_get_string_list (key_file,
REMOVED_ASSOCIATIONS_GROUP,
mime_types[i],
NULL,
NULL);
if (desktop_file_ids == NULL)
continue;
unaliased_type = _g_unix_content_type_unalias (mime_types[i]);
g_hash_table_replace (dir->mimeapps_list_removed_map,
unaliased_type,
desktop_file_ids);
}
g_strfreev (mime_types);
}
g_key_file_free (key_file);
return;
error:
g_free (filename);
g_key_file_free (key_file);
if (mime_types != NULL)
g_strfreev (mime_types);
if (load_error)
g_error_free (load_error);
}
static MimeInfoCacheDir *
mime_info_cache_dir_new (const char *path)
{
MimeInfoCacheDir *dir;
dir = g_new0 (MimeInfoCacheDir, 1);
dir->path = g_strdup (path);
return dir;
}
static void
mime_info_cache_dir_free (MimeInfoCacheDir *dir)
{
if (dir == NULL)
return;
if (dir->mime_info_cache_map != NULL)
{
destroy_info_cache_map (dir->mime_info_cache_map);
dir->mime_info_cache_map = NULL;
}
if (dir->defaults_list_map != NULL)
{
g_hash_table_destroy (dir->defaults_list_map);
dir->defaults_list_map = NULL;
}
if (dir->mimeapps_list_added_map != NULL)
{
g_hash_table_destroy (dir->mimeapps_list_added_map);
dir->mimeapps_list_added_map = NULL;
}
if (dir->mimeapps_list_removed_map != NULL)
{
g_hash_table_destroy (dir->mimeapps_list_removed_map);
dir->mimeapps_list_removed_map = NULL;
}
g_free (dir);
}
static void
mime_info_cache_dir_add_desktop_entries (MimeInfoCacheDir *dir,
const char *mime_type,
char **new_desktop_file_ids)
{
GList *desktop_file_ids;
int i;
desktop_file_ids = g_hash_table_lookup (dir->mime_info_cache_map,
mime_type);
for (i = 0; new_desktop_file_ids[i] != NULL; i++)
{
if (!g_list_find (desktop_file_ids, new_desktop_file_ids[i]))
desktop_file_ids = g_list_append (desktop_file_ids,
g_strdup (new_desktop_file_ids[i]));
}
g_hash_table_insert (dir->mime_info_cache_map, g_strdup (mime_type), desktop_file_ids);
}
static void
mime_info_cache_init_dir_lists (void)
{
const char * const *dirs;
int i;
mime_info_cache = mime_info_cache_new ();
dirs = get_applications_search_path ();
for (i = 0; dirs[i] != NULL; i++)
{
MimeInfoCacheDir *dir;
dir = mime_info_cache_dir_new (dirs[i]);
if (dir != NULL)
{
mime_info_cache_dir_init (dir);
mime_info_cache_dir_init_defaults_list (dir);
mime_info_cache_dir_init_mimeapps_list (dir);
mime_info_cache->dirs = g_list_append (mime_info_cache->dirs, dir);
}
}
}
static void
mime_info_cache_update_dir_lists (void)
{
GList *tmp;
tmp = mime_info_cache->dirs;
while (tmp != NULL)
{
MimeInfoCacheDir *dir = (MimeInfoCacheDir *) tmp->data;
/* No need to do this if we had file monitors... */
mime_info_cache_blow_global_cache ();
mime_info_cache_dir_init (dir);
mime_info_cache_dir_init_defaults_list (dir);
mime_info_cache_dir_init_mimeapps_list (dir);
tmp = tmp->next;
}
}
static void
mime_info_cache_init (void)
{
G_LOCK (mime_info_cache);
if (mime_info_cache == NULL)
mime_info_cache_init_dir_lists ();
else
{
time_t now;
time (&now);
if (now >= mime_info_cache->last_stat_time + 10)
{
mime_info_cache_update_dir_lists ();
mime_info_cache->last_stat_time = now;
}
}
if (mime_info_cache->should_ping_mime_monitor)
{
/* g_idle_add (emit_mime_changed, NULL); */
mime_info_cache->should_ping_mime_monitor = FALSE;
}
G_UNLOCK (mime_info_cache);
}
static MimeInfoCache *
mime_info_cache_new (void)
{
MimeInfoCache *cache;
cache = g_new0 (MimeInfoCache, 1);
cache->global_defaults_cache = g_hash_table_new_full (g_str_hash, g_str_equal,
(GDestroyNotify) g_free,
(GDestroyNotify) g_free);
return cache;
}
static void
mime_info_cache_free (MimeInfoCache *cache)
{
if (cache == NULL)
return;
g_list_foreach (cache->dirs,
(GFunc) mime_info_cache_dir_free,
NULL);
g_list_free (cache->dirs);
g_hash_table_destroy (cache->global_defaults_cache);
g_free (cache);
}
/**
* mime_info_cache_reload:
* @dir: directory path which needs reloading.
*
* Reload the mime information for the @dir.
*/
static void
mime_info_cache_reload (const char *dir)
{
/* FIXME: just reload the dir that needs reloading,
* don't blow the whole cache
*/
if (mime_info_cache != NULL)
{
G_LOCK (mime_info_cache);
mime_info_cache_free (mime_info_cache);
mime_info_cache = NULL;
G_UNLOCK (mime_info_cache);
}
}
static GList *
append_desktop_entry (GList *list,
const char *desktop_entry,
GList *removed_entries)
{
/* Add if not already in list, and valid */
if (!g_list_find_custom (list, desktop_entry, (GCompareFunc) strcmp) &&
!g_list_find_custom (removed_entries, desktop_entry, (GCompareFunc) strcmp))
list = g_list_prepend (list, g_strdup (desktop_entry));
return list;
}
/**
* get_all_desktop_entries_for_mime_type:
* @mime_type: a mime type.
*
* Returns all the desktop ids for @mime_type. The desktop files
* are listed in an order so that default applications are listed before
* non-default ones, and handlers for inherited mimetypes are listed
* after the base ones.
*
* Return value: a #GList containing the desktop ids which claim
* to handle @mime_type.
*/
static GList *
get_all_desktop_entries_for_mime_type (const char *base_mime_type)
{
GList *desktop_entries, *removed_entries, *list, *dir_list, *tmp;
MimeInfoCacheDir *dir;
char *mime_type;
char **mime_types;
char **default_entries;
char **removed_associations;
int i, j, k;
GPtrArray *array;
char **anc;
mime_info_cache_init ();
/* collect all ancestors */
mime_types = _g_unix_content_type_get_parents (base_mime_type);
array = g_ptr_array_new ();
for (i = 0; mime_types[i]; i++)
g_ptr_array_add (array, mime_types[i]);
g_free (mime_types);
for (i = 0; i < array->len; i++)
{
anc = _g_unix_content_type_get_parents (g_ptr_array_index (array, i));
for (j = 0; anc[j]; j++)
{
for (k = 0; k < array->len; k++)
{
if (strcmp (anc[j], g_ptr_array_index (array, k)) == 0)
break;
}
if (k == array->len) /* not found */
g_ptr_array_add (array, g_strdup (anc[j]));
}
g_strfreev (anc);
}
g_ptr_array_add (array, NULL);
mime_types = g_ptr_array_free (array, FALSE);
G_LOCK (mime_info_cache);
removed_entries = NULL;
desktop_entries = NULL;
for (i = 0; mime_types[i] != NULL; i++)
{
mime_type = mime_types[i];
/* Go through all apps listed as defaults */
for (dir_list = mime_info_cache->dirs;
dir_list != NULL;
dir_list = dir_list->next)
{
dir = dir_list->data;
/* First added associations from mimeapps.list */
default_entries = g_hash_table_lookup (dir->mimeapps_list_added_map, mime_type);
for (j = 0; default_entries != NULL && default_entries[j] != NULL; j++)
desktop_entries = append_desktop_entry (desktop_entries, default_entries[j], removed_entries);
/* Then removed associations from mimeapps.list */
removed_associations = g_hash_table_lookup (dir->mimeapps_list_removed_map, mime_type);
for (j = 0; removed_associations != NULL && removed_associations[j] != NULL; j++)
removed_entries = append_desktop_entry (removed_entries, removed_associations[j], NULL);
/* Then system defaults (or old per-user config) (using removed associations from this dir or earlier) */
default_entries = g_hash_table_lookup (dir->defaults_list_map, mime_type);
for (j = 0; default_entries != NULL && default_entries[j] != NULL; j++)
desktop_entries = append_desktop_entry (desktop_entries, default_entries[j], removed_entries);
}
/* Go through all entries that support the mimetype */
for (dir_list = mime_info_cache->dirs;
dir_list != NULL;
dir_list = dir_list->next)
{
dir = dir_list->data;
list = g_hash_table_lookup (dir->mime_info_cache_map, mime_type);
for (tmp = list; tmp != NULL; tmp = tmp->next)
desktop_entries = append_desktop_entry (desktop_entries, tmp->data, removed_entries);
}
}
G_UNLOCK (mime_info_cache);
g_strfreev (mime_types);
g_list_free (removed_entries);
desktop_entries = g_list_reverse (desktop_entries);
return desktop_entries;
}
/* GDesktopAppInfoLookup interface: */
static void g_desktop_app_info_lookup_base_init (gpointer g_class);
static void g_desktop_app_info_lookup_class_init (gpointer g_class,
gpointer class_data);
GType
g_desktop_app_info_lookup_get_type (void)
{
static volatile gsize g_define_type_id__volatile = 0;
if (g_once_init_enter (&g_define_type_id__volatile))
{
const GTypeInfo desktop_app_info_lookup_info =
{
sizeof (GDesktopAppInfoLookupIface), /* class_size */
g_desktop_app_info_lookup_base_init, /* base_init */
NULL, /* base_finalize */
g_desktop_app_info_lookup_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
0,
0, /* n_preallocs */
NULL
};
GType g_define_type_id =
g_type_register_static (G_TYPE_INTERFACE, I_("GDesktopAppInfoLookup"),
&desktop_app_info_lookup_info, 0);
g_type_interface_add_prerequisite (g_define_type_id, G_TYPE_OBJECT);
g_once_init_leave (&g_define_type_id__volatile, g_define_type_id);
}
return g_define_type_id__volatile;
}
static void
g_desktop_app_info_lookup_class_init (gpointer g_class,
gpointer class_data)
{
}
static void
g_desktop_app_info_lookup_base_init (gpointer g_class)
{
}
/**
* g_desktop_app_info_lookup_get_default_for_uri_scheme:
* @lookup: a #GDesktopAppInfoLookup
* @uri_scheme: a string containing a URI scheme.
*
* Gets the default application for launching applications
* using this URI scheme for a particular GDesktopAppInfoLookup
* implementation.
*
* The GDesktopAppInfoLookup interface and this function is used
* to implement g_app_info_get_default_for_uri_scheme() backends
* in a GIO module. There is no reason for applications to use it
* directly. Applications should use g_app_info_get_default_for_uri_scheme().
*
* Returns: #GAppInfo for given @uri_scheme or %NULL on error.
*/
GAppInfo *
g_desktop_app_info_lookup_get_default_for_uri_scheme (GDesktopAppInfoLookup *lookup,
const char *uri_scheme)
{
GDesktopAppInfoLookupIface *iface;
g_return_val_if_fail (G_IS_DESKTOP_APP_INFO_LOOKUP (lookup), NULL);
iface = G_DESKTOP_APP_INFO_LOOKUP_GET_IFACE (lookup);
return (* iface->get_default_for_uri_scheme) (lookup, uri_scheme);
}
#define __G_DESKTOP_APP_INFO_C__
#include "gioaliasdef.c"
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