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|
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
* Copyright © 2002 Jorn Baayen
* Copyright © 2003, 2004 Marco Pesenti Gritti
* Copyright © 2004, 2005, 2006 Christian Persch
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#include "config.h"
#include "ephy-file-helpers.h"
#include "ephy-prefs.h"
#include "ephy-debug.h"
#include "ephy-settings.h"
#include "ephy-string.h"
#include <glib.h>
#include <glib/gi18n.h>
#include <gio/gio.h>
#include <gio/gdesktopappinfo.h>
#include <gdk/gdk.h>
#include <libxml/xmlreader.h>
#include <gdk/gdk.h>
#include <gtk/gtk.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/stat.h>
/**
* SECTION:ephy-file-helpers
* @short_description: miscellaneous file related utility functions
*
* File related functions, including functions to launch, browse or move files
* atomically.
*/
#define EPHY_UUID "0d82d98f-7079-401c-abff-203fcde1ece3"
#define EPHY_UUID_ENVSTRING EPHY_UUID_ENVVAR "=" EPHY_UUID
#define DELAY_MAX_TICKS 64
#define INITIAL_TICKS 2
static GHashTable *files = NULL;
static GHashTable *mime_table = NULL;
static gboolean keep_temp_directory = FALSE; /* for debug purposes */
static char *dot_dir = NULL;
static char *tmp_dir = NULL;
static GList *del_on_exit = NULL;
GQuark ephy_file_helpers_error_quark;
/**
* ephy_file_tmp_dir:
*
* Returns the name of the temp dir for the running Epiphany instance.
*
* Returns: the name of the temp dir, this string belongs to Epiphany.
**/
const char *
ephy_file_tmp_dir (void)
{
if (tmp_dir == NULL)
{
char *partial_name;
char *full_name;
partial_name = g_strconcat ("epiphany-", g_get_user_name (),
"-XXXXXX", NULL);
full_name = g_build_filename (g_get_tmp_dir (), partial_name,
NULL);
#ifdef HAVE_MKDTEMP
tmp_dir = mkdtemp (full_name);
#else
#error no mkdtemp implementation
#endif
g_free (partial_name);
if (tmp_dir == NULL)
{
g_free (full_name);
}
}
return tmp_dir;
}
static char *
ephy_file_download_dir (void)
{
const char *xdg_download_dir;
xdg_download_dir = g_get_user_special_dir (G_USER_DIRECTORY_DOWNLOAD);
if (xdg_download_dir != NULL)
return g_strdup (xdg_download_dir);
/* If we don't have XDG user dirs info, return an educated guess. */
return g_build_filename (g_get_home_dir (), _("Downloads"), NULL);
}
/**
* ephy_file_get_downloads_dir:
*
* Gets the full path to the downloads dir. This uses ephy_file_downloads_dir()
* internally and hence is locale dependant. Note that this can return %NULL if
* not even the user homedir path can be found.
*
* Returns: a newly-allocated string containing the path to the downloads dir.
**/
char *
ephy_file_get_downloads_dir (void)
{
char *download_dir;
download_dir = g_settings_get_string (EPHY_SETTINGS_STATE,
EPHY_PREFS_STATE_DOWNLOAD_DIR);
/* Emergency download destination */
if (g_str_equal (download_dir, "Downloads"))
download_dir = ephy_file_download_dir ();
else if (g_str_equal (download_dir, "Desktop") || g_path_is_absolute (download_dir) != TRUE)
download_dir = ephy_file_desktop_dir ();
return download_dir;
}
/**
* ephy_file_desktop_dir:
*
* Gets the XDG desktop dir path or a default homedir/Desktop alternative.
*
* Returns: a newly-allocated string containing the desktop dir path.
**/
char *
ephy_file_desktop_dir (void)
{
const char *xdg_desktop_dir;
xdg_desktop_dir = g_get_user_special_dir (G_USER_DIRECTORY_DESKTOP);
if (xdg_desktop_dir != NULL)
return g_strdup (xdg_desktop_dir);
/* If we don't have XDG user dirs info, return an educated guess. */
return g_build_filename (g_get_home_dir (), _("Desktop"), NULL);
}
/**
* ephy_file_tmp_filename:
* @base: the base name of the temp file to create
* @extension: an optional extension for @base or %NULL
*
* Creates a temp file with mkstemp() using @base as the name with an optional
* @extension.
*
* Returns: a newly-allocated string containing the name of the created temp
* file or %NULL.
**/
char *
ephy_file_tmp_filename (const char *base,
const char *extension)
{
int fd;
char *name = g_strdup (base);
fd = g_mkstemp (name);
if (fd != -1)
{
unlink (name);
close (fd);
}
else
{
g_free (name);
return NULL;
}
if (extension)
{
char *tmp;
tmp = g_strconcat (name, ".",
extension, NULL);
g_free (name);
name = tmp;
}
return name;
}
/**
* ephy_file:
* @filename: the name of the Epiphany file requested
*
* Looks for @filename in Epiphany's directories and relevant paths.
*
* Returns: the full path to the requested file
**/
const char *
ephy_file (const char *filename)
{
char *ret;
guint i;
static const char * const paths[] =
{
#ifdef GNOME_ENABLE_DEBUG
SHARE_UNINSTALLED_DIR "/",
SHARE_UNINSTALLED_DIR "/glade/",
SHARE_UNINSTALLED_DIR "/ui/",
SHARE_UNINSTALLED_DIR "/art/",
SHARE_UNINSTALLED_DIR "/pages/",
#endif
SHARE_DIR "/",
SHARE_DIR "/glade/",
SHARE_DIR "/art/",
SHARE_DIR "/pages/"
};
g_assert (files != NULL);
ret = g_hash_table_lookup (files, filename);
if (ret != NULL)
return ret;
for (i = 0; i < G_N_ELEMENTS (paths); i++)
{
ret = g_strconcat (paths[i], filename, NULL);
if (g_file_test (ret, G_FILE_TEST_EXISTS) == TRUE)
{
g_hash_table_insert (files, g_strdup (filename), ret);
return (const char *) ret;
}
g_free (ret);
}
g_warning ("Failed to find %s\n", filename);
return NULL;
}
/**
* ephy_dot_dir:
*
* Gets Epiphany's configuration directory, usually .gnome2/epiphany under
* user's homedir.
*
* Returns: the full path to Epiphany's configuration directory
**/
const char *
ephy_dot_dir (void)
{
return dot_dir;
}
/**
* ephy_file_helpers_init:
* @profile_dir: directory to use as Epiphany's profile
* @private_profile: %TRUE if we should use a private profile
* @keep_temp_dir: %TRUE to omit deleting the temp dir on exit
* @error: an optional #GError
*
* Initializes Epiphany file helper functions, sets @profile_dir as Epiphany's
* profile dir and whether the running session will be private.
*
* Returns: %FALSE if the profile dir couldn't be created or accesed
**/
gboolean
ephy_file_helpers_init (const char *profile_dir,
gboolean private_profile,
gboolean keep_temp_dir,
GError **error)
{
const char *uuid;
/* See if we've been calling ourself, and abort if we have */
uuid = g_getenv (EPHY_UUID_ENVVAR);
if (uuid && strcmp (uuid, EPHY_UUID) == 0)
{
g_warning ("Self call detected, exiting!\n");
exit (1);
}
/* Put marker in env */
g_setenv (EPHY_UUID_ENVVAR, EPHY_UUID, TRUE);
ephy_file_helpers_error_quark = g_quark_from_static_string ("ephy-file-helpers-error");
files = g_hash_table_new_full (g_str_hash,
g_str_equal,
(GDestroyNotify) g_free,
(GDestroyNotify) g_free);
keep_temp_directory = keep_temp_dir;
if (private_profile && profile_dir != NULL)
{
dot_dir = g_strdup (profile_dir);
}
else if (private_profile)
{
if (ephy_file_tmp_dir () == NULL)
{
g_set_error (error,
EPHY_FILE_HELPERS_ERROR_QUARK,
0,
_("Could not create a temporary directory in “%s”."),
g_get_tmp_dir ());
return FALSE;
}
dot_dir = g_build_filename (ephy_file_tmp_dir (),
"epiphany",
NULL);
}
else
{
dot_dir = g_build_filename (g_get_home_dir (),
GNOME_DOT_GNOME,
"epiphany",
NULL);
}
return ephy_ensure_dir_exists (ephy_dot_dir (), error);
}
static void
delete_files (GList *l)
{
for (; l != NULL; l = l->next)
{
unlink (l->data);
}
}
/**
* ephy_file_helpers_shutdown:
*
* Cleans file helpers information, corresponds to ephy_file_helpers_init().
**/
void
ephy_file_helpers_shutdown (void)
{
g_hash_table_destroy (files);
del_on_exit = g_list_reverse (del_on_exit);
delete_files (del_on_exit);
g_list_foreach (del_on_exit, (GFunc)g_free, NULL);
g_list_free (del_on_exit);
del_on_exit = NULL;
if (mime_table != NULL)
{
LOG ("Destroying mime type hashtable");
g_hash_table_destroy (mime_table);
mime_table = NULL;
}
g_free (dot_dir);
dot_dir = NULL;
if (tmp_dir != NULL)
{
if (!keep_temp_directory)
{
/* recursively delete the contents and the directory */
ephy_file_delete_directory (tmp_dir);
}
g_free (tmp_dir);
tmp_dir = NULL;
}
}
/**
* ephy_ensure_dir_exists:
* @dir: path to a directory
* @error: an optional GError to fill or %NULL
*
* Checks if @dir exists and is a directory, if it it exists and it's not a
* directory %FALSE is returned. If @dir doesn't exist and can't be created
* then %FALSE is returned.
*
* Returns: %TRUE if @dir exists and is a directory
**/
gboolean
ephy_ensure_dir_exists (const char *dir,
GError **error)
{
if (g_file_test (dir, G_FILE_TEST_EXISTS) &&
!g_file_test (dir, G_FILE_TEST_IS_DIR))
{
g_set_error (error,
EPHY_FILE_HELPERS_ERROR_QUARK,
0,
_("The file “%s” exists. Please move it out of the way."),
dir);
return FALSE;
}
if (!g_file_test (dir, G_FILE_TEST_EXISTS) &&
g_mkdir_with_parents (dir, 488) != 0)
{
g_set_error (error,
EPHY_FILE_HELPERS_ERROR_QUARK,
0,
_("Failed to create directory “%s”."),
dir);
return FALSE;
}
return TRUE;
}
static void
ephy_find_file_recursive (const char *path,
const char *fname,
GSList **list,
gint depth,
gint maxdepth)
{
GDir *dir;
const gchar *file;
dir = g_dir_open (path, 0, NULL);
if (dir != NULL)
{
while ((file = g_dir_read_name (dir)))
{
if (depth < maxdepth)
{
char *new_path = g_build_filename (path, file, NULL);
ephy_find_file_recursive (new_path, fname, list,
depth + 1, maxdepth);
g_free (new_path);
}
if (strcmp (file, fname) == 0)
{
char *new_path = g_build_filename (path, file, NULL);
*list = g_slist_prepend (*list, new_path);
}
}
g_dir_close (dir);
}
}
/**
* ephy_file_find:
* @path: path to search for @fname
* @fname: filename to search for
* @maxdepth: maximum directory depth when searching @path
*
* Searchs for @fname in @path with a maximum depth of @maxdepth.
*
* Returns: a GSList of matches
**/
GSList *
ephy_file_find (const char *path,
const char *fname,
gint maxdepth)
{
GSList *ret = NULL;
ephy_find_file_recursive (path, fname, &ret, 0, maxdepth);
return ret;
}
/**
* ephy_file_switch_temp_file:
* @file_dest: destination file
* @file_temp: file to move to @file
*
* Moves @file_temp to @file_dest atomically, doing a backup and restoring it if
* something fails.
*
* Returns: %TRUE if the switch was successful
**/
gboolean
ephy_file_switch_temp_file (GFile *file_dest,
GFile *file_temp)
{
char *file_dest_path, *file_temp_path;
char *backup_path;
gboolean dest_exists;
gboolean retval = TRUE;
GFile *backup_file;
file_dest_path = g_file_get_path (file_dest);
file_temp_path = g_file_get_path (file_temp);
dest_exists = g_file_test (file_dest_path, G_FILE_TEST_EXISTS);
backup_path = g_strconcat (file_dest_path, ".old", NULL);
backup_file = g_file_new_for_path (backup_path);
if (dest_exists)
{
if (g_file_move (file_dest, backup_file,
G_FILE_COPY_OVERWRITE,
NULL, NULL, NULL, NULL) == FALSE)
{
g_warning ("Failed to backup %s to %s",
file_dest_path, backup_path);
retval = FALSE;
goto failed;
}
}
if (g_file_move (file_temp, file_dest,
G_FILE_COPY_OVERWRITE,
NULL, NULL, NULL, NULL) == FALSE)
{
g_warning ("Failed to replace %s with %s",
file_temp_path, file_dest_path);
if (g_file_move (backup_file, file_dest,
G_FILE_COPY_OVERWRITE,
NULL, NULL, NULL, NULL) == FALSE)
{
g_warning ("Failed to restore %s from %s",
file_dest_path, file_temp_path);
}
retval = FALSE;
goto failed;
}
if (dest_exists)
{
if (g_file_delete (backup_file,
NULL, NULL) == FALSE)
{
g_warning ("Failed to delete old file %s", backup_path);
}
}
failed:
g_free (file_dest_path);
g_free (file_temp_path);
g_free (backup_path);
g_object_unref (backup_file);
return retval;
}
/**
* ephy_file_delete_on_exit:
* @file: a #GFile
*
* Schedules @file to be deleted when Epiphany exits. This function currently
* does nothing.
**/
void
ephy_file_delete_on_exit (GFile *file)
{
/* does nothing now */
}
/**
* ephy_file_add_recent_item:
* @uri: an URI
* @mime_type: the mime type corresponding to @uri
*
* Adds @uri to the default #GtkRecentManager, with @mime_type as its type.
**/
void
ephy_file_add_recent_item (const char *uri,
const char *mime_type)
{
GtkRecentManager *manager = gtk_recent_manager_get_default ();
g_return_if_fail (mime_type != NULL && uri != NULL);
gtk_recent_manager_add_item (manager, uri);
}
static void
load_mime_from_xml (void)
{
xmlTextReaderPtr reader;
const char *xml_file;
int ret;
EphyMimePermission permission = EPHY_MIME_PERMISSION_UNKNOWN;
g_return_if_fail (mime_table == NULL);
mime_table = g_hash_table_new_full (g_str_hash, g_str_equal,
xmlFree, NULL);
xml_file = ephy_file ("mime-types-permissions.xml");
if (xml_file == NULL)
{
g_warning ("MIME types permissions file not found!\n");
return;
}
reader = xmlNewTextReaderFilename (xml_file);
if (reader == NULL)
{
g_warning ("Could not load MIME types permissions file!\n");
return;
}
ret = xmlTextReaderRead (reader);
while (ret == 1)
{
const xmlChar *tag;
xmlReaderTypes type;
tag = xmlTextReaderConstName (reader);
type = xmlTextReaderNodeType (reader);
if (xmlStrEqual (tag, (const xmlChar *)"safe") && type == XML_READER_TYPE_ELEMENT)
{
permission = EPHY_MIME_PERMISSION_SAFE;
}
else if (xmlStrEqual (tag, (const xmlChar *)"unsafe") && type == XML_READER_TYPE_ELEMENT)
{
permission = EPHY_MIME_PERMISSION_UNSAFE;
}
else if (xmlStrEqual (tag, (const xmlChar *)"mime-type"))
{
xmlChar *type;
type = xmlTextReaderGetAttribute (reader, (const xmlChar *)"type");
g_hash_table_insert (mime_table, type,
GINT_TO_POINTER (permission));
}
ret = xmlTextReaderRead (reader);
}
xmlFreeTextReader (reader);
}
/**
* ephy_file_check_mime:
* @mime_type: a mime type
*
* Checks @mime_type against our safe/unsafe database of types, returns an
* #EphyMimePermission.
*
* Returns: an #EphyMimePermission
**/
EphyMimePermission
ephy_file_check_mime (const char *mime_type)
{
EphyMimePermission permission;
gpointer tmp;
g_return_val_if_fail (mime_type != NULL, EPHY_MIME_PERMISSION_UNKNOWN);
if (mime_table == NULL)
{
load_mime_from_xml ();
}
tmp = g_hash_table_lookup (mime_table, mime_type);
if (tmp == NULL)
{
permission = EPHY_MIME_PERMISSION_UNKNOWN;
}
else
{
permission = GPOINTER_TO_INT (tmp);
}
return permission;
}
/**
* ephy_file_launch_application:
* @app: the application to launch
* @files: files to pass to @app
* @user_time: user time to prevent focus stealing
* @widget: a relevant widget from where to get the #GdkScreen and #GdkDisplay
*
* Launches @app to open @files. If @widget is set the screen and display from
* it will be used to launch the application, otherwise the defaults will be
* used.
*
* Returns: %TRUE if g_app_info_launch() succeeded
**/
gboolean
ephy_file_launch_application (GAppInfo *app,
GList *files,
guint32 user_time,
GtkWidget *widget)
{
GdkAppLaunchContext *context;
GdkDisplay *display;
GdkScreen *screen;
gboolean res;
if (widget)
{
display = gtk_widget_get_display (widget);
screen = gtk_widget_get_screen (widget);
}
else
{
display = gdk_display_get_default ();
screen = gdk_screen_get_default ();
}
context = gdk_display_get_app_launch_context (display);
gdk_app_launch_context_set_screen (context, screen);
gdk_app_launch_context_set_timestamp (context, user_time);
res = g_app_info_launch (app, files,
G_APP_LAUNCH_CONTEXT (context), NULL);
g_object_unref (context);
return res;
}
/**
* ephy_file_launch_desktop_file:
* @filename: the path to the .desktop file
* @parameter: path to an optional parameter file to pass to the application
* @user_time: user time to prevent focus stealing
* @widget: an optional widget for ephy_file_launch_application()
*
* Calls ephy_file_launch_application() for the application described by the
* .desktop file @filename. Can pass @parameter as optional file arguments.
*
* Returns: %TRUE if the application launch was successful
**/
gboolean
ephy_file_launch_desktop_file (const char *filename,
const char *parameter,
guint32 user_time,
GtkWidget *widget)
{
GDesktopAppInfo *app;
GFile *file = NULL;
GList *list = NULL;
gboolean ret;
app = g_desktop_app_info_new (filename);
if (parameter)
{
file = g_file_new_for_path (parameter);
list = g_list_append (list, file);
}
ret = ephy_file_launch_application (G_APP_INFO (app), list, user_time, widget);
g_list_free (list);
if (file)
g_object_unref (file);
return ret;
}
/**
* ephy_file_launch_handler:
* @mime_type: the mime type of @file or %NULL
* @file: a #GFile to pass as argument
* @user_time: user time to prevent focus stealing
*
* Launches @file with its default handler application, if @mime_type is %NULL
* then @file will be queried for its type.
*
* Returns: %TRUE on success
**/
gboolean
ephy_file_launch_handler (const char *mime_type,
GFile *file,
guint32 user_time)
{
GAppInfo *app = NULL;
gboolean ret = FALSE;
g_return_val_if_fail (file != NULL, FALSE);
if (mime_type != NULL)
{
app = g_app_info_get_default_for_type (mime_type,
FALSE);
}
else
{
GFileInfo *file_info;
char *type;
/* Sniff mime type and check if it's safe to open */
file_info = g_file_query_info (file,
G_FILE_ATTRIBUTE_STANDARD_CONTENT_TYPE,
0, NULL, NULL);
if (file_info == NULL) {
return FALSE;
}
type = g_strdup (g_file_info_get_content_type (file_info));
g_object_unref (file_info);
if (type != NULL && type[0] != '\0' &&
ephy_file_check_mime (type) == EPHY_MIME_PERMISSION_SAFE)
{
/* FIXME rename tmp file to right extension ? */
app = g_app_info_get_default_for_type (type, FALSE);
}
g_free (type);
}
if (app != NULL)
{
GList *list = NULL;
list = g_list_append (list, file);
ret = ephy_file_launch_application (app, list, user_time, NULL);
g_list_free (list);
}
else
ret = FALSE;
return ret;
}
/**
* ephy_file_browse_to:
* @file: a #GFile
* @user_time: user_time to prevent focus stealing
*
* Launches the default application for browsing directories, with @file's
* parent directory as its target. Passes @user_time to
* ephy_file_launch_handler() to prevent focus stealing.
*
* Returns: %TRUE if the launch succeeded
**/
gboolean
ephy_file_browse_to (GFile *file,
guint32 user_time)
{
return ephy_file_launch_handler ("inode/directory", file, user_time);
}
/**
* ephy_file_delete_directory:
* @path: the path to remove
*
* Remove @path and its contents. Like calling rm -rf @path.
**/
void
ephy_file_delete_directory (const char *path)
{
GFile *file;
gboolean ret;
file = g_file_new_for_path (path);
ret = g_file_delete (file, NULL, NULL);
if (ret == TRUE)
{
LOG ("Deleted dir '%s'", path);
}
else
{
LOG ("Couldn't delete dir '%s'", path);
}
g_object_unref (file);
}
/**
* ephy_file_delete_uri
* @uri: URI of the file to be deleted
*
* Remove the given URI.
*/
void
ephy_file_delete_uri (const char *uri)
{
GFile *file;
gboolean ret;
g_return_if_fail (uri);
file = g_file_new_for_uri (uri);
ret = g_file_delete (file, NULL, NULL);
if (ret == TRUE)
{
LOG ("Deleted file at URI '%s'", uri);
}
else
{
LOG ("Couldn't file at URI '%s'", uri);
}
g_object_unref (file);
}
static gchar *
get_accels_filename (void)
{
const char *home;
home = g_get_home_dir();
if (!home)
return NULL;
return g_build_filename (home, GNOME_DOT_GNOME, "accels", PACKAGE, NULL);
}
void
ephy_file_load_accels (void)
{
char *filename;
filename = get_accels_filename ();
if (!filename)
return;
gtk_accel_map_load (filename);
g_free (filename);
}
void
ephy_file_save_accels (void)
{
char *filename;
filename = get_accels_filename ();
if (!filename)
return;
gtk_accel_map_save (filename);
g_free (filename);
}
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