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-rw-r--r--gs-install-appstream/gs-install-appstream.c227
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diff --git a/gs-install-appstream/gs-install-appstream.c b/gs-install-appstream/gs-install-appstream.c
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+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*-
+ * vi:set noexpandtab tabstop=8 shiftwidth=8:
+ *
+ * Copyright (C) 2009-2016 Richard Hughes <richard@hughsie.com>
+ *
+ * Licensed under the GNU General Public License Version 2
+ *
+ * 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 of the License, 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#include "config.h"
+
+#include <errno.h>
+#include <locale.h>
+#include <pwd.h>
+#include <stdlib.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+#include <xmlb.h>
+#include <glib/gi18n.h>
+#include <glib/gstdio.h>
+
+#include "gs-external-appstream-utils.h"
+
+static gboolean
+gs_install_appstream_move_file (GFile *file, GError **error)
+{
+ g_autofree gchar *basename = g_file_get_basename (file);
+ g_autofree gchar *legacy_cachefn = gs_external_appstream_utils_get_legacy_file_cache_path (basename);
+ g_autofree gchar *cachefn = gs_external_appstream_utils_get_file_cache_path (basename);
+ g_autoptr(GFile) cachefn_file = g_file_new_for_path (cachefn);
+ g_autoptr(GFile) cachedir_file = g_file_get_parent (cachefn_file);
+ GStatBuf stat_buf = { 0 };
+
+ /* Try to cleanup the old cache directory, but do not panic, when it fails */
+ if (g_unlink (legacy_cachefn) == -1) {
+ int errn = errno;
+ if (errn != ENOENT)
+ g_debug ("Failed to unlink '%s': %s", legacy_cachefn, g_strerror (errn));
+ }
+
+ /* make sure the parent directory exists, but if not then create with
+ * the ownership and permissions of the current process */
+ if (!g_file_query_exists (cachedir_file, NULL)) {
+ if (!g_file_make_directory_with_parents (cachedir_file, NULL, error))
+ return FALSE;
+ }
+
+ /* do the move, overwriting existing files and setting the permissions
+ * of the current process (so that should be -rw-r--r--) */
+ if (!g_file_move (file, cachefn_file,
+ G_FILE_COPY_OVERWRITE |
+ G_FILE_COPY_NOFOLLOW_SYMLINKS |
+ G_FILE_COPY_TARGET_DEFAULT_PERMS,
+ NULL, NULL, NULL, error))
+ return FALSE;
+
+ /* verify it is "-rw-r--r--" and the root owns the file */
+ if (g_stat (cachefn, &stat_buf) == 0) {
+ struct passwd *pwd;
+ mode_t expected_mode = S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH;
+ if ((stat_buf.st_mode & expected_mode) != expected_mode &&
+ g_chmod (cachefn, expected_mode) == -1) {
+ int errn = errno;
+ g_debug ("Failed to chmod '%s': %s", cachefn, g_strerror (errn));
+ }
+
+ /* the file should be owned by the root */
+ pwd = getpwnam ("root");
+ if (pwd != NULL) {
+ if (chown (cachefn, pwd->pw_uid, pwd->pw_gid) == -1) {
+ int errn = errno;
+ g_debug ("Failed to chown on '%s': %s", cachefn, g_strerror (errn));
+ }
+ } else {
+ int errn = errno;
+ g_debug ("Failed to get root info: %s", g_strerror (errn));
+ }
+ } else {
+ int errn = errno;
+ g_debug ("Failed to stat '%s': %s", cachefn, g_strerror (errn));
+ }
+
+ return TRUE;
+}
+
+static gboolean
+gs_install_appstream_check_content_type (GFile *file, GError **error)
+{
+ const gchar *type;
+ g_autoptr(GError) error_local = NULL;
+ g_autoptr(GFileInfo) info = NULL;
+ g_autoptr(GPtrArray) components = NULL;
+ g_autoptr(XbBuilder) builder = xb_builder_new ();
+ g_autoptr(XbBuilderSource) source = xb_builder_source_new ();
+ g_autoptr(XbSilo) silo = NULL;
+
+ /* check is correct type */
+ info = g_file_query_info (file,
+ G_FILE_ATTRIBUTE_STANDARD_CONTENT_TYPE,
+ G_FILE_QUERY_INFO_NONE,
+ NULL, error);
+ if (info == NULL)
+ return FALSE;
+ type = g_file_info_get_attribute_string (info, G_FILE_ATTRIBUTE_STANDARD_CONTENT_TYPE);
+ if (g_strcmp0 (type, "application/gzip") != 0 &&
+ g_strcmp0 (type, "application/xml") != 0) {
+ g_set_error (error,
+ G_IO_ERROR,
+ G_IO_ERROR_INVALID_DATA,
+ "Invalid type %s: ", type);
+ return FALSE;
+ }
+
+ /* check is an AppStream file */
+ if (!xb_builder_source_load_file (source, file,
+ XB_BUILDER_SOURCE_FLAG_NONE,
+ NULL, &error_local)) {
+ g_set_error (error,
+ G_IO_ERROR,
+ G_IO_ERROR_INVALID_DATA,
+ "Failed to import XML: %s", error_local->message);
+ return FALSE;
+ }
+ xb_builder_import_source (builder, source);
+ /* No need to change the thread-default main context because the silo
+ * doesn’t live beyond this function. */
+ silo = xb_builder_compile (builder,
+ XB_BUILDER_COMPILE_FLAG_NONE,
+ NULL, &error_local);
+ if (silo == NULL) {
+ g_set_error (error,
+ G_IO_ERROR,
+ G_IO_ERROR_INVALID_DATA,
+ "Failed to parse XML: %s", error_local->message);
+ return FALSE;
+ }
+ components = xb_silo_query (silo, "components/component", 0, &error_local);
+ if (components == NULL) {
+ if (g_error_matches (error_local, G_IO_ERROR, G_IO_ERROR_NOT_FOUND)) {
+ g_set_error_literal (error,
+ G_IO_ERROR,
+ G_IO_ERROR_INVALID_DATA,
+ "No applications found in the AppStream XML");
+ return FALSE;
+ }
+ g_set_error (error,
+ G_IO_ERROR,
+ G_IO_ERROR_INVALID_DATA,
+ "Failed to query XML: %s", error_local->message);
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+int
+main (int argc, char *argv[])
+{
+ g_autoptr(GError) error = NULL;
+ g_autoptr(GFile) file = NULL;
+ g_autoptr(GOptionContext) context = NULL;
+
+ /* setup translations */
+ setlocale (LC_ALL, "");
+ bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);
+ bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
+ textdomain (GETTEXT_PACKAGE);
+
+ context = g_option_context_new (NULL);
+ /* TRANSLATORS: tool that is used when moving profiles system-wide */
+ g_option_context_set_summary (context, _("GNOME Software AppStream system-wide installer"));
+ if (!g_option_context_parse (context, &argc, &argv, &error)) {
+ g_print ("%s\n", _("Failed to parse command line arguments"));
+ return EXIT_FAILURE;
+ }
+
+ /* check input */
+ if (g_strv_length (argv) != 2) {
+ /* TRANSLATORS: user did not specify a valid filename */
+ g_print ("%s\n", _("You need to specify exactly one filename"));
+ return EXIT_FAILURE;
+ }
+
+ /* check calling process */
+ if (getuid () != 0 || geteuid () != 0) {
+ /* TRANSLATORS: only able to install files as root */
+ g_print ("%s\n", _("This program can only be used by the root user"));
+ return EXIT_FAILURE;
+ }
+
+ /* check content type for file */
+ file = g_file_new_for_path (argv[1]);
+ if (!gs_install_appstream_check_content_type (file, &error)) {
+ /* TRANSLATORS: error details */
+ g_print (_("Failed to validate content type: %s"), error->message);
+ g_print ("\n");
+ return EXIT_FAILURE;
+ }
+
+ /* Set the umask to ensure it is read-only to all users except root. */
+ umask (022);
+
+ /* do the move */
+ if (!gs_install_appstream_move_file (file, &error)) {
+ /* TRANSLATORS: error details */
+ g_print (_("Failed to move: %s"), error->message);
+ g_print ("\n");
+ return EXIT_FAILURE;
+ }
+
+ /* success */
+ return EXIT_SUCCESS;
+}