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48a84f6434
NULL is valid return value for the g_unix_mount_get_options function because mount options are currently provided only by libmount implementation. However, the gio tool passes the returned value to the g_strescape function without checking, which produces the following critical warning: GLib-CRITICAL **: 13:47:15.294: g_strescape: assertion 'source != NULL' failed Let's add the missing check to prevent the critical warnings.
391 lines
10 KiB
C
391 lines
10 KiB
C
/*
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* Copyright 2015 Red Hat, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*
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* Author: Matthias Clasen <mclasen@redhat.com>
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*/
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#include "config.h"
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#include <gio/gio.h>
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#include <gi18n.h>
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#ifdef G_OS_UNIX
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#include <gio/gunixmounts.h>
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#endif
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#include "gio-tool.h"
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static gboolean writable = FALSE;
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static gboolean filesystem = FALSE;
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static char *attributes = NULL;
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static gboolean nofollow_symlinks = FALSE;
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static const GOptionEntry entries[] = {
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{ "query-writable", 'w', 0, G_OPTION_ARG_NONE, &writable, N_("List writable attributes"), NULL },
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{ "filesystem", 'f', 0, G_OPTION_ARG_NONE, &filesystem, N_("Get file system info"), NULL },
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{ "attributes", 'a', 0, G_OPTION_ARG_STRING, &attributes, N_("The attributes to get"), N_("ATTRIBUTES") },
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{ "nofollow-symlinks", 'n', 0, G_OPTION_ARG_NONE, &nofollow_symlinks, N_("Don’t follow symbolic links"), NULL },
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{ NULL }
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};
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static char *
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escape_string (const char *in)
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{
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GString *str;
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static char *hex_digits = "0123456789abcdef";
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unsigned char c;
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str = g_string_new ("");
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while ((c = *in++) != 0)
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{
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if (c >= 32 && c <= 126 && c != '\\')
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g_string_append_c (str, c);
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else
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{
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g_string_append (str, "\\x");
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g_string_append_c (str, hex_digits[(c >> 4) & 0xf]);
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g_string_append_c (str, hex_digits[c & 0xf]);
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}
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}
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return g_string_free (str, FALSE);
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}
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static void
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show_attributes (GFileInfo *info)
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{
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char **attributes;
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char *s;
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int i;
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attributes = g_file_info_list_attributes (info, NULL);
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g_print (_("attributes:\n"));
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for (i = 0; attributes[i] != NULL; i++)
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{
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/* list the icons in order rather than displaying "GThemedIcon:0x8df7200" */
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if (strcmp (attributes[i], "standard::icon") == 0 ||
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strcmp (attributes[i], "standard::symbolic-icon") == 0)
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{
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GIcon *icon;
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int j;
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const char * const *names = NULL;
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if (strcmp (attributes[i], "standard::symbolic-icon") == 0)
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icon = g_file_info_get_symbolic_icon (info);
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else
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icon = g_file_info_get_icon (info);
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/* only look up names if GThemedIcon */
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if (G_IS_THEMED_ICON(icon))
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{
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names = g_themed_icon_get_names (G_THEMED_ICON (icon));
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g_print (" %s: ", attributes[i]);
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for (j = 0; names[j] != NULL; j++)
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g_print ("%s%s", names[j], (names[j+1] == NULL)?"":", ");
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g_print ("\n");
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}
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else
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{
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s = g_file_info_get_attribute_as_string (info, attributes[i]);
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g_print (" %s: %s\n", attributes[i], s);
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g_free (s);
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}
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}
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else
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{
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s = g_file_info_get_attribute_as_string (info, attributes[i]);
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g_print (" %s: %s\n", attributes[i], s);
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g_free (s);
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}
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}
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g_strfreev (attributes);
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}
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static void
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show_info (GFile *file, GFileInfo *info)
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{
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const char *name, *type;
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char *escaped, *uri;
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goffset size;
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const char *path;
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#ifdef G_OS_UNIX
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GUnixMountEntry *entry;
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#endif
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name = g_file_info_get_display_name (info);
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if (name)
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/* Translators: This is a noun and represents and attribute of a file */
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g_print (_("display name: %s\n"), name);
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name = g_file_info_get_edit_name (info);
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if (name)
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/* Translators: This is a noun and represents and attribute of a file */
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g_print (_("edit name: %s\n"), name);
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name = g_file_info_get_name (info);
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if (name)
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{
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escaped = escape_string (name);
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g_print (_("name: %s\n"), escaped);
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g_free (escaped);
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}
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if (g_file_info_has_attribute (info, G_FILE_ATTRIBUTE_STANDARD_TYPE))
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{
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type = file_type_to_string (g_file_info_get_file_type (info));
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g_print (_("type: %s\n"), type);
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}
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if (g_file_info_has_attribute (info, G_FILE_ATTRIBUTE_STANDARD_SIZE))
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{
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size = g_file_info_get_size (info);
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g_print (_("size: "));
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g_print (" %"G_GUINT64_FORMAT"\n", (guint64)size);
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}
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if (g_file_info_get_is_hidden (info))
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g_print (_("hidden\n"));
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uri = g_file_get_uri (file);
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g_print (_("uri: %s\n"), uri);
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g_free (uri);
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path = g_file_peek_path (file);
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if (path)
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{
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g_print (_("local path: %s\n"), path);
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#ifdef G_OS_UNIX
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entry = g_unix_mount_at (path, NULL);
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if (entry == NULL)
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entry = g_unix_mount_for (path, NULL);
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if (entry != NULL)
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{
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gchar *device;
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const gchar *root;
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gchar *root_string = NULL;
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gchar *mount;
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gchar *fs;
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const gchar *options;
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gchar *options_string = NULL;
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device = g_strescape (g_unix_mount_get_device_path (entry), NULL);
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root = g_unix_mount_get_root_path (entry);
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if (root != NULL && g_strcmp0 (root, "/") != 0)
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{
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escaped = g_strescape (root, NULL);
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root_string = g_strconcat ("[", escaped, "]", NULL);
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g_free (escaped);
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}
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mount = g_strescape (g_unix_mount_get_mount_path (entry), NULL);
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fs = g_strescape (g_unix_mount_get_fs_type (entry), NULL);
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options = g_unix_mount_get_options (entry);
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if (options != NULL)
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{
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options_string = g_strescape (options, NULL);
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}
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g_print (_("unix mount: %s%s %s %s %s\n"), device,
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root_string ? root_string : "", mount, fs,
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options_string ? options_string : "");
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g_free (device);
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g_free (root_string);
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g_free (mount);
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g_free (fs);
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g_free (options_string);
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g_unix_mount_free (entry);
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}
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#endif
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}
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show_attributes (info);
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}
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static gboolean
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query_info (GFile *file)
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{
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GFileQueryInfoFlags flags;
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GFileInfo *info;
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GError *error;
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if (file == NULL)
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return FALSE;
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if (attributes == NULL)
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attributes = "*";
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flags = 0;
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if (nofollow_symlinks)
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flags |= G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS;
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error = NULL;
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if (filesystem)
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info = g_file_query_filesystem_info (file, attributes, NULL, &error);
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else
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info = g_file_query_info (file, attributes, flags, NULL, &error);
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if (info == NULL)
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{
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print_file_error (file, error->message);
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g_error_free (error);
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return FALSE;
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}
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if (filesystem)
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show_attributes (info);
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else
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show_info (file, info);
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g_object_unref (info);
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return TRUE;
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}
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static gboolean
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get_writable_info (GFile *file)
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{
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GFileAttributeInfoList *list;
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GError *error;
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int i;
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char *flags;
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if (file == NULL)
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return FALSE;
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error = NULL;
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list = g_file_query_settable_attributes (file, NULL, &error);
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if (list == NULL)
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{
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print_file_error (file, error->message);
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g_error_free (error);
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return FALSE;
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}
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if (list->n_infos > 0)
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{
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g_print (_("Settable attributes:\n"));
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for (i = 0; i < list->n_infos; i++)
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{
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flags = attribute_flags_to_string (list->infos[i].flags);
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g_print (" %s (%s%s%s)\n",
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list->infos[i].name,
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attribute_type_to_string (list->infos[i].type),
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(*flags != 0)?", ":"", flags);
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g_free (flags);
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}
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}
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g_file_attribute_info_list_unref (list);
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list = g_file_query_writable_namespaces (file, NULL, &error);
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if (list == NULL)
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{
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print_file_error (file, error->message);
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g_error_free (error);
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return FALSE;
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}
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if (list->n_infos > 0)
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{
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g_print (_("Writable attribute namespaces:\n"));
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for (i = 0; i < list->n_infos; i++)
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{
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flags = attribute_flags_to_string (list->infos[i].flags);
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g_print (" %s (%s%s%s)\n",
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list->infos[i].name,
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attribute_type_to_string (list->infos[i].type),
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(*flags != 0)?", ":"", flags);
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g_free (flags);
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}
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}
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g_file_attribute_info_list_unref (list);
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return TRUE;
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}
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int
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handle_info (int argc, char *argv[], gboolean do_help)
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{
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GOptionContext *context;
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gchar *param;
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GError *error = NULL;
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gboolean res;
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gint i;
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GFile *file;
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g_set_prgname ("gio info");
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/* Translators: commandline placeholder */
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param = g_strdup_printf ("%s…", _("LOCATION"));
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context = g_option_context_new (param);
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g_free (param);
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g_option_context_set_help_enabled (context, FALSE);
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g_option_context_set_summary (context,
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_("Show information about locations."));
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g_option_context_set_description (context,
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_("gio info is similar to the traditional ls utility, but using GIO\n"
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"locations instead of local files: for example, you can use something\n"
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"like smb://server/resource/file.txt as location. File attributes can\n"
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"be specified with their GIO name, e.g. standard::icon, or just by\n"
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"namespace, e.g. unix, or by “*”, which matches all attributes"));
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g_option_context_add_main_entries (context, entries, GETTEXT_PACKAGE);
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if (do_help)
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{
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show_help (context, NULL);
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g_option_context_free (context);
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return 0;
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}
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if (!g_option_context_parse (context, &argc, &argv, &error))
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{
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show_help (context, error->message);
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g_error_free (error);
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g_option_context_free (context);
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return 1;
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}
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if (argc < 2)
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{
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show_help (context, _("No locations given"));
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g_option_context_free (context);
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return 1;
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}
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g_option_context_free (context);
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res = TRUE;
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for (i = 1; i < argc; i++)
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{
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file = g_file_new_for_commandline_arg (argv[i]);
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if (writable)
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res &= get_writable_info (file);
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else
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res &= query_info (file);
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g_object_unref (file);
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}
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return res ? 0 : 2;
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}
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