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From b7c8fd25eb5b978c4572dadb7e1a25b8aa6bbdae Mon Sep 17 00:00:00 2001
From: Wu Xiaotian <yetist@gmail.com>
Date: Wed, 24 Jul 2019 15:55:17 +0800
Subject: [PATCH] Add duktape as javascript engine.
---
configure.ac | 28 +-
src/polkitbackend/Makefile.am | 14 +-
.../polkitbackendduktapeauthority.c | 1402 +++++++++++++++++
3 files changed, 1436 insertions(+), 8 deletions(-)
create mode 100644 src/polkitbackend/polkitbackendduktapeauthority.c
diff --git a/configure.ac b/configure.ac
index 5cedb4e..6c27486 100644
--- a/configure.ac
+++ b/configure.ac
@@ -79,11 +79,22 @@ PKG_CHECK_MODULES(GLIB, [gmodule-2.0 gio-unix-2.0 >= 2.30.0])
AC_SUBST(GLIB_CFLAGS)
AC_SUBST(GLIB_LIBS)
-PKG_CHECK_MODULES(LIBJS, [mozjs-60])
-
-AC_SUBST(LIBJS_CFLAGS)
-AC_SUBST(LIBJS_CXXFLAGS)
-AC_SUBST(LIBJS_LIBS)
+dnl ---------------------------------------------------------------------------
+dnl - Check javascript backend
+dnl ---------------------------------------------------------------------------
+AC_ARG_WITH(duktape, AS_HELP_STRING([--with-duktape],[Use Duktape as javascript backend]),with_duktape=yes,with_duktape=no)
+AS_IF([test x${with_duktape} == xyes], [
+ PKG_CHECK_MODULES(LIBJS, [duktape >= 2.0.0 ])
+ AC_SUBST(LIBJS_CFLAGS)
+ AC_SUBST(LIBJS_LIBS)
+], [
+ PKG_CHECK_MODULES(LIBJS, [mozjs-60])
+
+ AC_SUBST(LIBJS_CFLAGS)
+ AC_SUBST(LIBJS_CXXFLAGS)
+ AC_SUBST(LIBJS_LIBS)
+])
+AM_CONDITIONAL(USE_DUKTAPE, [test x$with_duktape == xyes], [Using duktape as javascript engine library])
EXPAT_LIB=""
AC_ARG_WITH(expat, [ --with-expat=<dir> Use expat from here],
@@ -580,6 +591,13 @@ echo "
PAM support: ${have_pam}
systemdsystemunitdir: ${systemdsystemunitdir}
polkitd user: ${POLKITD_USER}"
+if test "x${with_duktape}" = xyes; then
+echo "
+ Javascript engine: Duktape"
+else
+echo "
+ Javascript engine: Mozjs"
+fi
if test "$have_pam" = yes ; then
echo "
diff --git a/src/polkitbackend/Makefile.am b/src/polkitbackend/Makefile.am
index e48b739..9572b06 100644
--- a/src/polkitbackend/Makefile.am
+++ b/src/polkitbackend/Makefile.am
@@ -33,7 +33,7 @@ libpolkit_backend_1_la_SOURCES = \
polkitbackendprivate.h \
polkitbackendauthority.h polkitbackendauthority.c \
polkitbackendinteractiveauthority.h polkitbackendinteractiveauthority.c \
- polkitbackendjsauthority.h polkitbackendjsauthority.cpp \
+ polkitbackendjsauthority.h \
polkitbackendactionpool.h polkitbackendactionpool.c \
polkitbackendactionlookup.h polkitbackendactionlookup.c \
$(NULL)
@@ -51,19 +51,27 @@ libpolkit_backend_1_la_CFLAGS = \
-D_POLKIT_BACKEND_COMPILATION \
$(GLIB_CFLAGS) \
$(LIBSYSTEMD_CFLAGS) \
- $(LIBJS_CFLAGS) \
+ $(LIBJS_CFLAGS) \
$(NULL)
libpolkit_backend_1_la_CXXFLAGS = $(libpolkit_backend_1_la_CFLAGS)
libpolkit_backend_1_la_LIBADD = \
$(GLIB_LIBS) \
+ $(DUKTAPE_LIBS) \
$(LIBSYSTEMD_LIBS) \
$(top_builddir)/src/polkit/libpolkit-gobject-1.la \
$(EXPAT_LIBS) \
- $(LIBJS_LIBS) \
+ $(LIBJS_LIBS) \
$(NULL)
+if USE_DUKTAPE
+libpolkit_backend_1_la_SOURCES += polkitbackendduktapeauthority.c
+libpolkit_backend_1_la_LIBADD += -lm
+else
+libpolkit_backend_1_la_SOURCES += polkitbackendjsauthority.cpp
+endif
+
rulesdir = $(sysconfdir)/polkit-1/rules.d
rules_DATA = 50-default.rules
diff --git a/src/polkitbackend/polkitbackendduktapeauthority.c b/src/polkitbackend/polkitbackendduktapeauthority.c
new file mode 100644
index 0000000..ae98453
--- /dev/null
+++ b/src/polkitbackend/polkitbackendduktapeauthority.c
@@ -0,0 +1,1402 @@
+/*
+ * Copyright (C) 2008-2012 Red Hat, Inc.
+ * Copyright (C) 2015 Tangent Space <jstpierre@mecheye.net>
+ * Copyright (C) 2019 Wu Xiaotian <yetist@gmail.com>
+ *
+ * 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: David Zeuthen <davidz@redhat.com>
+ */
+
+#include "config.h"
+#include <sys/wait.h>
+#include <errno.h>
+#include <pwd.h>
+#include <grp.h>
+#include <netdb.h>
+#include <string.h>
+#include <glib/gstdio.h>
+#include <locale.h>
+#include <glib/gi18n-lib.h>
+
+#include <polkit/polkit.h>
+#include "polkitbackendjsauthority.h"
+
+#include <polkit/polkitprivate.h>
+
+#ifdef HAVE_LIBSYSTEMD
+#include <systemd/sd-login.h>
+#endif /* HAVE_LIBSYSTEMD */
+
+#include "initjs.h" /* init.js */
+#include "duktape.h"
+
+/**
+ * SECTION:polkitbackendjsauthority
+ * @title: PolkitBackendJsAuthority
+ * @short_description: JS Authority
+ * @stability: Unstable
+ *
+ * An implementation of #PolkitBackendAuthority that reads and
+ * evalates Javascript files and supports interaction with
+ * authentication agents (virtue of being based on
+ * #PolkitBackendInteractiveAuthority).
+ */
+
+/* ---------------------------------------------------------------------------------------------------- */
+
+struct _PolkitBackendJsAuthorityPrivate
+{
+ gchar **rules_dirs;
+ GFileMonitor **dir_monitors; /* NULL-terminated array of GFileMonitor instances */
+ duk_context *cx;
+};
+
+#define WATCHDOG_TIMEOUT (15 * G_TIME_SPAN_SECOND)
+
+static void utils_spawn (const gchar *const *argv,
+ guint timeout_seconds,
+ GCancellable *cancellable,
+ GAsyncReadyCallback callback,
+ gpointer user_data);
+
+gboolean utils_spawn_finish (GAsyncResult *res,
+ gint *out_exit_status,
+ gchar **out_standard_output,
+ gchar **out_standard_error,
+ GError **error);
+
+static void on_dir_monitor_changed (GFileMonitor *monitor,
+ GFile *file,
+ GFile *other_file,
+ GFileMonitorEvent event_type,
+ gpointer user_data);
+
+/* ---------------------------------------------------------------------------------------------------- */
+
+enum
+{
+ PROP_0,
+ PROP_RULES_DIRS,
+};
+
+/* ---------------------------------------------------------------------------------------------------- */
+
+static GList *polkit_backend_js_authority_get_admin_auth_identities (PolkitBackendInteractiveAuthority *authority,
+ PolkitSubject *caller,
+ PolkitSubject *subject,
+ PolkitIdentity *user_for_subject,
+ gboolean subject_is_local,
+ gboolean subject_is_active,
+ const gchar *action_id,
+ PolkitDetails *details);
+
+static PolkitImplicitAuthorization polkit_backend_js_authority_check_authorization_sync (
+ PolkitBackendInteractiveAuthority *authority,
+ PolkitSubject *caller,
+ PolkitSubject *subject,
+ PolkitIdentity *user_for_subject,
+ gboolean subject_is_local,
+ gboolean subject_is_active,
+ const gchar *action_id,
+ PolkitDetails *details,
+ PolkitImplicitAuthorization implicit);
+
+G_DEFINE_TYPE (PolkitBackendJsAuthority, polkit_backend_js_authority, POLKIT_BACKEND_TYPE_INTERACTIVE_AUTHORITY);
+
+/* ---------------------------------------------------------------------------------------------------- */
+
+/* ---------------------------------------------------------------------------------------------------- */
+
+static void
+polkit_backend_js_authority_init (PolkitBackendJsAuthority *authority)
+{
+ authority->priv = G_TYPE_INSTANCE_GET_PRIVATE (authority,
+ POLKIT_BACKEND_TYPE_JS_AUTHORITY,
+ PolkitBackendJsAuthorityPrivate);
+}
+
+static gint
+rules_file_name_cmp (const gchar *a,
+ const gchar *b)
+{
+ gint ret;
+ const gchar *a_base;
+ const gchar *b_base;
+
+ a_base = strrchr (a, '/');
+ b_base = strrchr (b, '/');
+
+ g_assert (a_base != NULL);
+ g_assert (b_base != NULL);
+ a_base += 1;
+ b_base += 1;
+
+ ret = g_strcmp0 (a_base, b_base);
+ if (ret == 0)
+ {
+ /* /etc wins over /usr */
+ ret = g_strcmp0 (a, b);
+ g_assert (ret != 0);
+ }
+
+ return ret;
+}
+
+static void
+load_scripts (PolkitBackendJsAuthority *authority)
+{
+ duk_context *cx = authority->priv->cx;
+ GList *files = NULL;
+ GList *l;
+ guint num_scripts = 0;
+ GError *error = NULL;
+ guint n;
+
+ files = NULL;
+
+ for (n = 0; authority->priv->rules_dirs != NULL && authority->priv->rules_dirs[n] != NULL; n++)
+ {
+ const gchar *dir_name = authority->priv->rules_dirs[n];
+ GDir *dir = NULL;
+
+ polkit_backend_authority_log (POLKIT_BACKEND_AUTHORITY (authority),
+ "Loading rules from directory %s",
+ dir_name);
+
+ dir = g_dir_open (dir_name,
+ 0,
+ &error);
+ if (dir == NULL)
+ {
+ polkit_backend_authority_log (POLKIT_BACKEND_AUTHORITY (authority),
+ "Error opening rules directory: %s (%s, %d)",
+ error->message, g_quark_to_string (error->domain), error->code);
+ g_clear_error (&error);
+ }
+ else
+ {
+ const gchar *name;
+ while ((name = g_dir_read_name (dir)) != NULL)
+ {
+ if (g_str_has_suffix (name, ".rules"))
+ files = g_list_prepend (files, g_strdup_printf ("%s/%s", dir_name, name));
+ }
+ g_dir_close (dir);
+ }
+ }
+
+ files = g_list_sort (files, (GCompareFunc) rules_file_name_cmp);
+
+ for (l = files; l != NULL; l = l->next)
+ {
+ const gchar *filename = l->data;
+
+#if (DUK_VERSION >= 20000)
+ gchar *contents;
+ gsize length;
+ GError *error = NULL;
+ if (!g_file_get_contents (filename, &contents, &length, &error)){
+ g_warning("Error when file contents of %s: %s\n", filename, error->message);
+ g_error_free (error);
+ continue;
+ }
+ if (duk_peval_lstring_noresult(cx, contents,length) != 0)
+#else
+ if (duk_peval_file_noresult (cx, filename) != 0)
+#endif
+ {
+ polkit_backend_authority_log (POLKIT_BACKEND_AUTHORITY (authority),
+ "Error compiling script %s: %s",
+ filename, duk_safe_to_string (authority->priv->cx, -1));
+#if (DUK_VERSION >= 20000)
+ g_free (contents);
+#endif
+ continue;
+ }
+#if (DUK_VERSION >= 20000)
+ g_free (contents);
+#endif
+ num_scripts++;
+ }
+
+ polkit_backend_authority_log (POLKIT_BACKEND_AUTHORITY (authority),
+ "Finished loading, compiling and executing %d rules",
+ num_scripts);
+ g_list_free_full (files, g_free);
+}
+
+static void
+reload_scripts (PolkitBackendJsAuthority *authority)
+{
+ duk_context *cx = authority->priv->cx;
+
+ duk_set_top (cx, 0);
+ duk_get_global_string (cx, "polkit");
+ duk_push_string (cx, "_deleteRules");
+
+ duk_call_prop (cx, 0, 0);
+
+ polkit_backend_authority_log (POLKIT_BACKEND_AUTHORITY (authority),
+ "Collecting garbage unconditionally...");
+
+ load_scripts (authority);
+
+ /* Let applications know we have new rules... */
+ g_signal_emit_by_name (authority, "changed");
+}
+
+static void
+on_dir_monitor_changed (GFileMonitor *monitor,
+ GFile *file,
+ GFile *other_file,
+ GFileMonitorEvent event_type,
+ gpointer user_data)
+{
+ PolkitBackendJsAuthority *authority = POLKIT_BACKEND_JS_AUTHORITY (user_data);
+
+ /* TODO: maybe rate-limit so storms of events are collapsed into one with a 500ms resolution?
+ * Because when editing a file with emacs we get 4-8 events..
+ */
+
+ if (file != NULL)
+ {
+ gchar *name;
+
+ name = g_file_get_basename (file);
+
+ /* g_print ("event_type=%d file=%p name=%s\n", event_type, file, name); */
+ if (!g_str_has_prefix (name, ".") &&
+ !g_str_has_prefix (name, "#") &&
+ g_str_has_suffix (name, ".rules") &&
+ (event_type == G_FILE_MONITOR_EVENT_CREATED ||
+ event_type == G_FILE_MONITOR_EVENT_DELETED ||
+ event_type == G_FILE_MONITOR_EVENT_CHANGES_DONE_HINT))
+ {
+ polkit_backend_authority_log (POLKIT_BACKEND_AUTHORITY (authority),
+ "Reloading rules");
+ reload_scripts (authority);
+ }
+ g_free (name);
+ }
+}
+
+
+static void
+setup_file_monitors (PolkitBackendJsAuthority *authority)
+{
+ guint n;
+ GPtrArray *p;
+
+ p = g_ptr_array_new ();
+ for (n = 0; authority->priv->rules_dirs != NULL && authority->priv->rules_dirs[n] != NULL; n++)
+ {
+ GFile *file;
+ GError *error;
+ GFileMonitor *monitor;
+
+ file = g_file_new_for_path (authority->priv->rules_dirs[n]);
+ error = NULL;
+ monitor = g_file_monitor_directory (file,
+ G_FILE_MONITOR_NONE,
+ NULL,
+ &error);
+ g_object_unref (file);
+ if (monitor == NULL)
+ {
+ g_warning ("Error monitoring directory %s: %s",
+ authority->priv->rules_dirs[n],
+ error->message);
+ g_clear_error (&error);
+ }
+ else
+ {
+ g_signal_connect (monitor,
+ "changed",
+ G_CALLBACK (on_dir_monitor_changed),
+ authority);
+ g_ptr_array_add (p, monitor);
+ }
+ }
+ g_ptr_array_add (p, NULL);
+ authority->priv->dir_monitors = (GFileMonitor**) g_ptr_array_free (p, FALSE);
+}
+
+static duk_ret_t js_polkit_log (duk_context *cx);
+static duk_ret_t js_polkit_spawn (duk_context *cx);
+static duk_ret_t js_polkit_user_is_in_netgroup (duk_context *cx);
+
+static const duk_function_list_entry js_polkit_functions[] =
+{
+ { "log", js_polkit_log, 1 },
+ { "spawn", js_polkit_spawn, 1 },
+ { "_userIsInNetGroup", js_polkit_user_is_in_netgroup, 2 },
+ { NULL, NULL, 0 },
+};
+
+static void
+polkit_backend_js_authority_constructed (GObject *object)
+{
+ PolkitBackendJsAuthority *authority = POLKIT_BACKEND_JS_AUTHORITY (object);
+ duk_context *cx;
+
+ cx = duk_create_heap (NULL, NULL, NULL, authority, NULL);
+ if (cx == NULL)
+ goto fail;
+
+ authority->priv->cx = cx;
+
+ duk_push_global_object (cx);
+ duk_push_object (cx);
+ duk_put_function_list (cx, -1, js_polkit_functions);
+ duk_put_prop_string (cx, -2, "polkit");
+
+ duk_eval_string (cx, init_js);
+
+ if (authority->priv->rules_dirs == NULL)
+ {
+ authority->priv->rules_dirs = g_new0 (gchar *, 3);
+ authority->priv->rules_dirs[0] = g_strdup (PACKAGE_SYSCONF_DIR "/polkit-1/rules.d");
+ authority->priv->rules_dirs[1] = g_strdup (PACKAGE_DATA_DIR "/polkit-1/rules.d");
+ }
+
+ setup_file_monitors (authority);
+ load_scripts (authority);
+
+ G_OBJECT_CLASS (polkit_backend_js_authority_parent_class)->constructed (object);
+ return;
+
+ fail:
+ g_critical ("Error initializing JavaScript environment");
+ g_assert_not_reached ();
+}
+
+static void
+polkit_backend_js_authority_finalize (GObject *object)
+{
+ PolkitBackendJsAuthority *authority = POLKIT_BACKEND_JS_AUTHORITY (object);
+ guint n;
+
+ for (n = 0; authority->priv->dir_monitors != NULL && authority->priv->dir_monitors[n] != NULL; n++)
+ {
+ GFileMonitor *monitor = authority->priv->dir_monitors[n];
+ g_signal_handlers_disconnect_by_func (monitor,
+ G_CALLBACK (on_dir_monitor_changed),
+ authority);
+ g_object_unref (monitor);
+ }
+ g_free (authority->priv->dir_monitors);
+ g_strfreev (authority->priv->rules_dirs);
+
+ duk_destroy_heap (authority->priv->cx);
+
+ G_OBJECT_CLASS (polkit_backend_js_authority_parent_class)->finalize (object);
+}
+
+static void
+polkit_backend_js_authority_set_property (GObject *object,
+ guint property_id,
+ const GValue *value,
+ GParamSpec *pspec)
+{
+ PolkitBackendJsAuthority *authority = POLKIT_BACKEND_JS_AUTHORITY (object);
+
+ switch (property_id)
+ {
+ case PROP_RULES_DIRS:
+ g_assert (authority->priv->rules_dirs == NULL);
+ authority->priv->rules_dirs = (gchar **) g_value_dup_boxed (value);
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+ break;
+ }
+}
+
+static const gchar *
+polkit_backend_js_authority_get_name (PolkitBackendAuthority *authority)
+{
+ return "js";
+}
+
+static const gchar *
+polkit_backend_js_authority_get_version (PolkitBackendAuthority *authority)
+{
+ return PACKAGE_VERSION;
+}
+
+static PolkitAuthorityFeatures
+polkit_backend_js_authority_get_features (PolkitBackendAuthority *authority)
+{
+ return POLKIT_AUTHORITY_FEATURES_TEMPORARY_AUTHORIZATION;
+}
+
+static void
+polkit_backend_js_authority_class_init (PolkitBackendJsAuthorityClass *klass)
+{
+ GObjectClass *gobject_class;
+ PolkitBackendAuthorityClass *authority_class;
+ PolkitBackendInteractiveAuthorityClass *interactive_authority_class;
+
+
+ gobject_class = G_OBJECT_CLASS (klass);
+ gobject_class->finalize = polkit_backend_js_authority_finalize;
+ gobject_class->set_property = polkit_backend_js_authority_set_property;
+ gobject_class->constructed = polkit_backend_js_authority_constructed;
+
+ authority_class = POLKIT_BACKEND_AUTHORITY_CLASS (klass);
+ authority_class->get_name = polkit_backend_js_authority_get_name;
+ authority_class->get_version = polkit_backend_js_authority_get_version;
+ authority_class->get_features = polkit_backend_js_authority_get_features;
+
+ interactive_authority_class = POLKIT_BACKEND_INTERACTIVE_AUTHORITY_CLASS (klass);
+ interactive_authority_class->get_admin_identities = polkit_backend_js_authority_get_admin_auth_identities;
+ interactive_authority_class->check_authorization_sync = polkit_backend_js_authority_check_authorization_sync;
+
+ g_object_class_install_property (gobject_class,
+ PROP_RULES_DIRS,
+ g_param_spec_boxed ("rules-dirs",
+ NULL,
+ NULL,
+ G_TYPE_STRV,
+ G_PARAM_CONSTRUCT_ONLY | G_PARAM_WRITABLE));
+
+
+ g_type_class_add_private (klass, sizeof (PolkitBackendJsAuthorityPrivate));
+}
+
+/* ---------------------------------------------------------------------------------------------------- */
+
+static void
+set_property_str (duk_context *cx,
+ const gchar *name,
+ const gchar *value)
+{
+ duk_push_string (cx, value);
+ duk_put_prop_string (cx, -2, name);
+}
+
+static void
+set_property_strv (duk_context *cx,
+ const gchar *name,
+ GPtrArray *value)
+{
+ guint n;
+ duk_push_array (cx);
+ for (n = 0; n < value->len; n++)
+ {
+ duk_push_string (cx, g_ptr_array_index (value, n));
+ duk_put_prop_index (cx, -2, n);
+ }
+ duk_put_prop_string (cx, -2, name);
+}
+
+static void
+set_property_int32 (duk_context *cx,
+ const gchar *name,
+ gint32 value)
+{
+ duk_push_int (cx, value);
+ duk_put_prop_string (cx, -2, name);
+}
+
+static void
+set_property_bool (duk_context *cx,
+ const char *name,
+ gboolean value)
+{
+ duk_push_boolean (cx, value);
+ duk_put_prop_string (cx, -2, name);
+}
+
+/* ---------------------------------------------------------------------------------------------------- */
+
+static gboolean
+push_subject (duk_context *cx,
+ PolkitSubject *subject,
+ PolkitIdentity *user_for_subject,
+ gboolean subject_is_local,
+ gboolean subject_is_active,
+ GError **error)
+{
+ gboolean ret = FALSE;
+ pid_t pid;
+ uid_t uid;
+ gchar *user_name = NULL;
+ GPtrArray *groups = NULL;
+ struct passwd *passwd;
+ char *seat_str = NULL;
+ char *session_str = NULL;
+
+ duk_get_global_string (cx, "Subject");
+ duk_new (cx, 0);
+
+ if (POLKIT_IS_UNIX_PROCESS (subject))
+ {
+ pid = polkit_unix_process_get_pid (POLKIT_UNIX_PROCESS (subject));
+ }
+ else if (POLKIT_IS_SYSTEM_BUS_NAME (subject))
+ {
+ PolkitSubject *process;
+ process = polkit_system_bus_name_get_process_sync (POLKIT_SYSTEM_BUS_NAME (subject), NULL, error);
+ if (process == NULL)
+ goto out;
+ pid = polkit_unix_process_get_pid (POLKIT_UNIX_PROCESS (process));
+ g_object_unref (process);
+ }
+ else
+ {
+ g_assert_not_reached ();
+ }
+
+#ifdef HAVE_LIBSYSTEMD
+ if (sd_pid_get_session (pid, &session_str) == 0)
+ {
+ if (sd_session_get_seat (session_str, &seat_str) == 0)
+ {
+ /* do nothing */
+ }
+ }
+#endif /* HAVE_LIBSYSTEMD */
+
+ g_assert (POLKIT_IS_UNIX_USER (user_for_subject));
+ uid = polkit_unix_user_get_uid (POLKIT_UNIX_USER (user_for_subject));
+
+ groups = g_ptr_array_new_with_free_func (g_free);
+
+ passwd = getpwuid (uid);
+ if (passwd == NULL)
+ {
+ user_name = g_strdup_printf ("%d", (gint) uid);
+ g_warning ("Error looking up info for uid %d: %m", (gint) uid);
+ }
+ else
+ {
+ gid_t gids[512];
+ int num_gids = 512;
+
+ user_name = g_strdup (passwd->pw_name);
+
+ if (getgrouplist (passwd->pw_name,
+ passwd->pw_gid,
+ gids,
+ &num_gids) < 0)
+ {
+ g_warning ("Error looking up groups for uid %d: %m", (gint) uid);
+ }
+ else
+ {
+ gint n;
+ for (n = 0; n < num_gids; n++)
+ {
+ struct group *group;
+ group = getgrgid (gids[n]);
+ if (group == NULL)
+ {
+ g_ptr_array_add (groups, g_strdup_printf ("%d", (gint) gids[n]));
+ }
+ else
+ {
+ g_ptr_array_add (groups, g_strdup (group->gr_name));
+ }
+ }
+ }
+ }
+
+ set_property_int32 (cx, "pid", pid);
+ set_property_str (cx, "user", user_name);
+ set_property_strv (cx, "groups", groups);
+ set_property_str (cx, "seat", seat_str);
+ set_property_str (cx, "session", session_str);
+ set_property_bool (cx, "local", subject_is_local);
+ set_property_bool (cx, "active", subject_is_active);
+
+ ret = TRUE;
+
+ out:
+ free (session_str);
+ free (seat_str);
+ g_free (user_name);
+ if (groups != NULL)
+ g_ptr_array_unref (groups);
+
+ return ret;
+}
+
+/* ---------------------------------------------------------------------------------------------------- */
+
+static gboolean
+push_action_and_details (duk_context *cx,
+ const gchar *action_id,
+ PolkitDetails *details,
+ GError **error)
+{
+ gchar **keys;
+ guint n;
+
+ duk_get_global_string (cx, "Action");
+ duk_new (cx, 0);
+
+ set_property_str (cx, "id", action_id);
+
+ keys = polkit_details_get_keys (details);
+ for (n = 0; keys != NULL && keys[n] != NULL; n++)
+ {
+ gchar *key;
+ const gchar *value;
+ key = g_strdup_printf ("_detail_%s", keys[n]);
+ value = polkit_details_lookup (details, keys[n]);
+ set_property_str (cx, key, value);
+ g_free (key);
+ }
+ g_strfreev (keys);
+
+ return TRUE;
+}
+
+/* ---------------------------------------------------------------------------------------------------- */
+
+/* ---------------------------------------------------------------------------------------------------- */
+
+static GList *
+polkit_backend_js_authority_get_admin_auth_identities (PolkitBackendInteractiveAuthority *_authority,
+ PolkitSubject *caller,
+ PolkitSubject *subject,
+ PolkitIdentity *user_for_subject,
+ gboolean subject_is_local,
+ gboolean subject_is_active,
+ const gchar *action_id,
+ PolkitDetails *details)
+{
+ PolkitBackendJsAuthority *authority = POLKIT_BACKEND_JS_AUTHORITY (_authority);
+ GList *ret = NULL;
+ guint n;
+ GError *error = NULL;
+ const char *ret_str = NULL;
+ gchar **ret_strs = NULL;
+ duk_context *cx = authority->priv->cx;
+
+ duk_set_top (cx, 0);
+ duk_get_global_string (cx, "polkit");
+ duk_push_string (cx, "_runAdminRules");
+
+ if (!push_action_and_details (cx, action_id, details, &error))
+ {
+ polkit_backend_authority_log (POLKIT_BACKEND_AUTHORITY (authority),
+ "Error converting action and details to JS object: %s",
+ error->message);
+ g_clear_error (&error);
+ goto out;
+ }
+
+ if (!push_subject (cx, subject, user_for_subject, subject_is_local, subject_is_active, &error))
+ {
+ polkit_backend_authority_log (POLKIT_BACKEND_AUTHORITY (authority),
+ "Error converting subject to JS object: %s",
+ error->message);
+ g_clear_error (&error);
+ goto out;
+ }
+
+ if (duk_pcall_prop (cx, 0, 2) != DUK_ERR_NONE)
+ {
+ polkit_backend_authority_log (POLKIT_BACKEND_AUTHORITY (authority),
+ "Error evaluating admin rules: ",
+ duk_safe_to_string (cx, -1));
+ goto out;
+ }
+
+ ret_str = duk_require_string (cx, -1);
+
+ ret_strs = g_strsplit (ret_str, ",", -1);
+ for (n = 0; ret_strs != NULL && ret_strs[n] != NULL; n++)
+ {
+ const gchar *identity_str = ret_strs[n];
+ PolkitIdentity *identity;
+
+ error = NULL;
+ identity = polkit_identity_from_string (identity_str, &error);
+ if (identity == NULL)
+ {
+ polkit_backend_authority_log (POLKIT_BACKEND_AUTHORITY (authority),
+ "Identity `%s' is not valid, ignoring: %s",
+ identity_str, error->message);
+ g_clear_error (&error);
+ }
+ else
+ {
+ ret = g_list_prepend (ret, identity);
+ }
+ }
+ ret = g_list_reverse (ret);
+
+ out:
+ g_strfreev (ret_strs);
+ /* fallback to root password auth */
+ if (ret == NULL)
+ ret = g_list_prepend (ret, polkit_unix_user_new (0));
+
+ return ret;
+}
+
+/* ---------------------------------------------------------------------------------------------------- */
+
+static PolkitImplicitAuthorization
+polkit_backend_js_authority_check_authorization_sync (PolkitBackendInteractiveAuthority *_authority,
+ PolkitSubject *caller,
+ PolkitSubject *subject,
+ PolkitIdentity *user_for_subject,
+ gboolean subject_is_local,
+ gboolean subject_is_active,
+ const gchar *action_id,
+ PolkitDetails *details,
+ PolkitImplicitAuthorization implicit)
+{
+ PolkitBackendJsAuthority *authority = POLKIT_BACKEND_JS_AUTHORITY (_authority);
+ PolkitImplicitAuthorization ret = implicit;
+ GError *error = NULL;
+ gchar *ret_str = NULL;
+ gboolean good = FALSE;
+ duk_context *cx = authority->priv->cx;
+
+ duk_set_top (cx, 0);
+ duk_get_global_string (cx, "polkit");
+ duk_push_string (cx, "_runRules");
+
+ if (!push_action_and_details (cx, action_id, details, &error))
+ {
+ polkit_backend_authority_log (POLKIT_BACKEND_AUTHORITY (authority),
+ "Error converting action and details to JS object: %s",
+ error->message);
+ g_clear_error (&error);
+ goto out;
+ }
+
+ if (!push_subject (cx, subject, user_for_subject, subject_is_local, subject_is_active, &error))
+ {
+ polkit_backend_authority_log (POLKIT_BACKEND_AUTHORITY (authority),
+ "Error converting subject to JS object: %s",
+ error->message);
+ g_clear_error (&error);
+ goto out;
+ }
+
+ if (duk_pcall_prop (cx, 0, 2) != DUK_ERR_NONE)
+ {
+ polkit_backend_authority_log (POLKIT_BACKEND_AUTHORITY (authority),
+ "Error evaluating authorization rules: ",
+ duk_safe_to_string (cx, -1));
+ goto out;
+ }
+
+ if (duk_is_null(cx, -1)) {
+ good = TRUE;
+ goto out;
+ }
+ ret_str = g_strdup (duk_require_string (cx, -1));
+ if (!polkit_implicit_authorization_from_string (ret_str, &ret))
+ {
+ polkit_backend_authority_log (POLKIT_BACKEND_AUTHORITY (authority),
+ "Returned result `%s' is not valid",
+ ret_str);
+ goto out;
+ }
+
+ good = TRUE;
+
+ out:
+ if (!good)
+ ret = POLKIT_IMPLICIT_AUTHORIZATION_NOT_AUTHORIZED;
+ g_free (ret_str);
+
+ return ret;
+}
+
+/* ---------------------------------------------------------------------------------------------------- */
+
+static duk_ret_t
+js_polkit_log (duk_context *cx)
+{
+ const char *str = duk_require_string (cx, 0);
+ fprintf (stderr, "%s\n", str);
+ return 0;
+}
+
+/* ---------------------------------------------------------------------------------------------------- */
+
+static const gchar *
+get_signal_name (gint signal_number)
+{
+ switch (signal_number)
+ {
+#define _HANDLE_SIG(sig) case sig: return #sig;
+ _HANDLE_SIG (SIGHUP);
+ _HANDLE_SIG (SIGINT);
+ _HANDLE_SIG (SIGQUIT);
+ _HANDLE_SIG (SIGILL);
+ _HANDLE_SIG (SIGABRT);
+ _HANDLE_SIG (SIGFPE);
+ _HANDLE_SIG (SIGKILL);
+ _HANDLE_SIG (SIGSEGV);
+ _HANDLE_SIG (SIGPIPE);
+ _HANDLE_SIG (SIGALRM);
+ _HANDLE_SIG (SIGTERM);
+ _HANDLE_SIG (SIGUSR1);
+ _HANDLE_SIG (SIGUSR2);
+ _HANDLE_SIG (SIGCHLD);
+ _HANDLE_SIG (SIGCONT);
+ _HANDLE_SIG (SIGSTOP);
+ _HANDLE_SIG (SIGTSTP);
+ _HANDLE_SIG (SIGTTIN);
+ _HANDLE_SIG (SIGTTOU);
+ _HANDLE_SIG (SIGBUS);
+#ifdef SIGPOLL
+ _HANDLE_SIG (SIGPOLL);
+#endif
+ _HANDLE_SIG (SIGPROF);
+ _HANDLE_SIG (SIGSYS);
+ _HANDLE_SIG (SIGTRAP);
+ _HANDLE_SIG (SIGURG);
+ _HANDLE_SIG (SIGVTALRM);
+ _HANDLE_SIG (SIGXCPU);
+ _HANDLE_SIG (SIGXFSZ);
+#undef _HANDLE_SIG
+ default:
+ break;
+ }
+ return "UNKNOWN_SIGNAL";
+}
+
+typedef struct
+{
+ GMainLoop *loop;
+ GAsyncResult *res;
+} SpawnData;
+
+static void
+spawn_cb (GObject *source_object,
+ GAsyncResult *res,
+ gpointer user_data)
+{
+ SpawnData *data = user_data;
+ data->res = g_object_ref (res);
+ g_main_loop_quit (data->loop);
+}
+
+static duk_ret_t
+js_polkit_spawn (duk_context *cx)
+{
+#if (DUK_VERSION >= 20000)
+ duk_ret_t ret = DUK_RET_ERROR;
+#else
+ duk_ret_t ret = DUK_RET_INTERNAL_ERROR;
+#endif
+ gchar *standard_output = NULL;
+ gchar *standard_error = NULL;
+ gint exit_status;
+ GError *error = NULL;
+ guint32 array_len;
+ gchar **argv = NULL;
+ GMainContext *context = NULL;
+ GMainLoop *loop = NULL;
+ SpawnData data = {0};
+ char *err_str = NULL;
+ guint n;
+
+ if (!duk_is_array (cx, 0))
+ goto out;
+
+ array_len = duk_get_length (cx, 0);
+
+ argv = g_new0 (gchar*, array_len + 1);
+ for (n = 0; n < array_len; n++)
+ {
+ duk_get_prop_index (cx, 0, n);
+ argv[n] = g_strdup (duk_to_string (cx, -1));
+ duk_pop (cx);
+ }
+
+ context = g_main_context_new ();
+ loop = g_main_loop_new (context, FALSE);
+
+ g_main_context_push_thread_default (context);
+
+ data.loop = loop;
+ utils_spawn ((const gchar *const *) argv,
+ 10, /* timeout_seconds */
+ NULL, /* cancellable */
+ spawn_cb,
+ &data);
+
+ g_main_loop_run (loop);
+
+ g_main_context_pop_thread_default (context);
+
+ if (!utils_spawn_finish (data.res,
+ &exit_status,
+ &standard_output,
+ &standard_error,
+ &error))
+ {
+ err_str = g_strdup_printf ("Error spawning helper: %s (%s, %d)",
+ error->message, g_quark_to_string (error->domain), error->code);
+ g_clear_error (&error);
+ goto out;
+ }
+
+ if (!(WIFEXITED (exit_status) && WEXITSTATUS (exit_status) == 0))
+ {
+ GString *gstr;
+ gstr = g_string_new (NULL);
+ if (WIFEXITED (exit_status))
+ {
+ g_string_append_printf (gstr,
+ "Helper exited with non-zero exit status %d",
+ WEXITSTATUS (exit_status));
+ }
+ else if (WIFSIGNALED (exit_status))
+ {
+ g_string_append_printf (gstr,
+ "Helper was signaled with signal %s (%d)",
+ get_signal_name (WTERMSIG (exit_status)),
+ WTERMSIG (exit_status));
+ }
+ g_string_append_printf (gstr, ", stdout=`%s', stderr=`%s'",
+ standard_output, standard_error);
+ err_str = g_string_free (gstr, FALSE);
+ goto out;
+ }
+
+ duk_push_string (cx, standard_output);
+ ret = 1;
+
+ out:
+ g_strfreev (argv);
+ g_free (standard_output);
+ g_free (standard_error);
+ g_clear_object (&data.res);
+ if (loop != NULL)
+ g_main_loop_unref (loop);
+ if (context != NULL)
+ g_main_context_unref (context);
+
+ if (err_str)
+ duk_error (cx, DUK_ERR_ERROR, err_str);
+
+ return ret;
+}
+
+/* ---------------------------------------------------------------------------------------------------- */
+
+
+static duk_ret_t
+js_polkit_user_is_in_netgroup (duk_context *cx)
+{
+ const char *user;
+ const char *netgroup;
+ gboolean is_in_netgroup = FALSE;
+
+ user = duk_require_string (cx, 0);
+ netgroup = duk_require_string (cx, 1);
+
+ if (innetgr (netgroup,
+ NULL, /* host */
+ user,
+ NULL)) /* domain */
+ {
+ is_in_netgroup = TRUE;
+ }
+
+ duk_push_boolean (cx, is_in_netgroup);
+ return 1;
+}
+
+/* ---------------------------------------------------------------------------------------------------- */
+
+typedef struct
+{
+ GSimpleAsyncResult *simple; /* borrowed reference */
+ GMainContext *main_context; /* may be NULL */
+
+ GCancellable *cancellable; /* may be NULL */
+ gulong cancellable_handler_id;
+
+ GPid child_pid;
+ gint child_stdout_fd;
+ gint child_stderr_fd;
+
+ GIOChannel *child_stdout_channel;
+ GIOChannel *child_stderr_channel;
+
+ GSource *child_watch_source;
+ GSource *child_stdout_source;
+ GSource *child_stderr_source;
+
+ guint timeout_seconds;
+ gboolean timed_out;
+ GSource *timeout_source;
+
+ GString *child_stdout;
+ GString *child_stderr;
+
+ gint exit_status;
+} UtilsSpawnData;
+
+static void
+utils_child_watch_from_release_cb (GPid pid,
+ gint status,
+ gpointer user_data)
+{
+}
+
+static void
+utils_spawn_data_free (UtilsSpawnData *data)
+{
+ if (data->timeout_source != NULL)
+ {
+ g_source_destroy (data->timeout_source);
+ data->timeout_source = NULL;
+ }
+
+ /* Nuke the child, if necessary */
+ if (data->child_watch_source != NULL)
+ {
+ g_source_destroy (data->child_watch_source);
+ data->child_watch_source = NULL;
+ }
+
+ if (data->child_pid != 0)
+ {
+ GSource *source;
+ kill (data->child_pid, SIGTERM);
+ /* OK, we need to reap for the child ourselves - we don't want
+ * to use waitpid() because that might block the calling
+ * thread (the child might handle SIGTERM and use several
+ * seconds for cleanup/rollback).
+ *
+ * So we use GChildWatch instead.
+ *
+ * Avoid taking a references to ourselves. but note that we need
+ * to pass the GSource so we can nuke it once handled.
+ */
+ source = g_child_watch_source_new (data->child_pid);
+ g_source_set_callback (source,
+ (GSourceFunc) utils_child_watch_from_release_cb,
+ source,
+ (GDestroyNotify) g_source_destroy);
+ g_source_attach (source, data->main_context);
+ g_source_unref (source);
+ data->child_pid = 0;
+ }
+
+ if (data->child_stdout != NULL)
+ {
+ g_string_free (data->child_stdout, TRUE);
+ data->child_stdout = NULL;
+ }
+
+ if (data->child_stderr != NULL)
+ {
+ g_string_free (data->child_stderr, TRUE);
+ data->child_stderr = NULL;
+ }
+
+ if (data->child_stdout_channel != NULL)
+ {
+ g_io_channel_unref (data->child_stdout_channel);
+ data->child_stdout_channel = NULL;
+ }
+ if (data->child_stderr_channel != NULL)
+ {
+ g_io_channel_unref (data->child_stderr_channel);
+ data->child_stderr_channel = NULL;
+ }
+
+ if (data->child_stdout_source != NULL)
+ {
+ g_source_destroy (data->child_stdout_source);
+ data->child_stdout_source = NULL;
+ }
+ if (data->child_stderr_source != NULL)
+ {
+ g_source_destroy (data->child_stderr_source);
+ data->child_stderr_source = NULL;
+ }
+
+ if (data->child_stdout_fd != -1)
+ {
+ g_warn_if_fail (close (data->child_stdout_fd) == 0);
+ data->child_stdout_fd = -1;
+ }
+ if (data->child_stderr_fd != -1)
+ {
+ g_warn_if_fail (close (data->child_stderr_fd) == 0);
+ data->child_stderr_fd = -1;
+ }
+
+ if (data->cancellable_handler_id > 0)
+ {
+ g_cancellable_disconnect (data->cancellable, data->cancellable_handler_id);
+ data->cancellable_handler_id = 0;
+ }
+
+ if (data->main_context != NULL)
+ g_main_context_unref (data->main_context);
+
+ if (data->cancellable != NULL)
+ g_object_unref (data->cancellable);
+
+ g_slice_free (UtilsSpawnData, data);
+}
+
+/* called in the thread where @cancellable was cancelled */
+static void
+utils_on_cancelled (GCancellable *cancellable,
+ gpointer user_data)
+{
+ UtilsSpawnData *data = user_data;
+ GError *error;
+
+ error = NULL;
+ g_warn_if_fail (g_cancellable_set_error_if_cancelled (cancellable, &error));
+ g_simple_async_result_take_error (data->simple, error);
+ g_simple_async_result_complete_in_idle (data->simple);
+ g_object_unref (data->simple);
+}
+
+static gboolean
+utils_read_child_stderr (GIOChannel *channel,
+ GIOCondition condition,
+ gpointer user_data)
+{
+ UtilsSpawnData *data = user_data;
+ gchar buf[1024];
+ gsize bytes_read;
+
+ g_io_channel_read_chars (channel, buf, sizeof buf, &bytes_read, NULL);
+ g_string_append_len (data->child_stderr, buf, bytes_read);
+ return TRUE;
+}
+
+static gboolean
+utils_read_child_stdout (GIOChannel *channel,
+ GIOCondition condition,
+ gpointer user_data)
+{
+ UtilsSpawnData *data = user_data;
+ gchar buf[1024];
+ gsize bytes_read;
+
+ g_io_channel_read_chars (channel, buf, sizeof buf, &bytes_read, NULL);
+ g_string_append_len (data->child_stdout, buf, bytes_read);
+ return TRUE;
+}
+
+static void
+utils_child_watch_cb (GPid pid,
+ gint status,
+ gpointer user_data)
+{
+ UtilsSpawnData *data = user_data;
+ gchar *buf;
+ gsize buf_size;
+
+ if (g_io_channel_read_to_end (data->child_stdout_channel, &buf, &buf_size, NULL) == G_IO_STATUS_NORMAL)
+ {
+ g_string_append_len (data->child_stdout, buf, buf_size);
+ g_free (buf);
+ }
+ if (g_io_channel_read_to_end (data->child_stderr_channel, &buf, &buf_size, NULL) == G_IO_STATUS_NORMAL)
+ {
+ g_string_append_len (data->child_stderr, buf, buf_size);
+ g_free (buf);
+ }
+
+ data->exit_status = status;
+
+ /* ok, child watch is history, make sure we don't free it in spawn_data_free() */
+ data->child_pid = 0;
+ data->child_watch_source = NULL;
+
+ /* we're done */
+ g_simple_async_result_complete_in_idle (data->simple);
+ g_object_unref (data->simple);
+}
+
+static gboolean
+utils_timeout_cb (gpointer user_data)
+{
+ UtilsSpawnData *data = user_data;
+
+ data->timed_out = TRUE;
+
+ /* ok, timeout is history, make sure we don't free it in spawn_data_free() */
+ data->timeout_source = NULL;
+
+ /* we're done */
+ g_simple_async_result_complete_in_idle (data->simple);
+ g_object_unref (data->simple);
+
+ return FALSE; /* remove source */
+}
+
+static void
+utils_spawn (const gchar *const *argv,
+ guint timeout_seconds,
+ GCancellable *cancellable,
+ GAsyncReadyCallback callback,
+ gpointer user_data)
+{
+ UtilsSpawnData *data;
+ GError *error;
+
+ data = g_slice_new0 (UtilsSpawnData);
+ data->timeout_seconds = timeout_seconds;
+ data->simple = g_simple_async_result_new (NULL,
+ callback,
+ user_data,
+ utils_spawn);
+ data->main_context = g_main_context_get_thread_default ();
+ if (data->main_context != NULL)
+ g_main_context_ref (data->main_context);
+
+ data->cancellable = cancellable != NULL ? g_object_ref (cancellable) : NULL;
+
+ data->child_stdout = g_string_new (NULL);
+ data->child_stderr = g_string_new (NULL);
+ data->child_stdout_fd = -1;
+ data->child_stderr_fd = -1;
+
+ /* the life-cycle of UtilsSpawnData is tied to its GSimpleAsyncResult */
+ g_simple_async_result_set_op_res_gpointer (data->simple, data, (GDestroyNotify) utils_spawn_data_free);
+
+ error = NULL;
+ if (data->cancellable != NULL)
+ {
+ /* could already be cancelled */
+ error = NULL;
+ if (g_cancellable_set_error_if_cancelled (data->cancellable, &error))
+ {
+ g_simple_async_result_take_error (data->simple, error);
+ g_simple_async_result_complete_in_idle (data->simple);
+ g_object_unref (data->simple);
+ goto out;
+ }
+
+ data->cancellable_handler_id = g_cancellable_connect (data->cancellable,
+ G_CALLBACK (utils_on_cancelled),
+ data,
+ NULL);
+ }
+
+ error = NULL;
+ if (!g_spawn_async_with_pipes (NULL, /* working directory */
+ (gchar **) argv,
+ NULL, /* envp */
+ G_SPAWN_SEARCH_PATH | G_SPAWN_DO_NOT_REAP_CHILD,
+ NULL, /* child_setup */
+ NULL, /* child_setup's user_data */
+ &(data->child_pid),
+ NULL, /* gint *stdin_fd */
+ &(data->child_stdout_fd),
+ &(data->child_stderr_fd),
+ &error))
+ {
+ g_prefix_error (&error, "Error spawning: ");
+ g_simple_async_result_take_error (data->simple, error);
+ g_simple_async_result_complete_in_idle (data->simple);
+ g_object_unref (data->simple);
+ goto out;
+ }
+
+ if (timeout_seconds > 0)
+ {
+ data->timeout_source = g_timeout_source_new_seconds (timeout_seconds);
+ g_source_set_priority (data->timeout_source, G_PRIORITY_DEFAULT);
+ g_source_set_callback (data->timeout_source, utils_timeout_cb, data, NULL);
+ g_source_attach (data->timeout_source, data->main_context);
+ g_source_unref (data->timeout_source);
+ }
+
+ data->child_watch_source = g_child_watch_source_new (data->child_pid);
+ g_source_set_callback (data->child_watch_source, (GSourceFunc) utils_child_watch_cb, data, NULL);
+ g_source_attach (data->child_watch_source, data->main_context);
+ g_source_unref (data->child_watch_source);
+
+ data->child_stdout_channel = g_io_channel_unix_new (data->child_stdout_fd);
+ g_io_channel_set_flags (data->child_stdout_channel, G_IO_FLAG_NONBLOCK, NULL);
+ data->child_stdout_source = g_io_create_watch (data->child_stdout_channel, G_IO_IN);
+ g_source_set_callback (data->child_stdout_source, (GSourceFunc) utils_read_child_stdout, data, NULL);
+ g_source_attach (data->child_stdout_source, data->main_context);
+ g_source_unref (data->child_stdout_source);
+
+ data->child_stderr_channel = g_io_channel_unix_new (data->child_stderr_fd);
+ g_io_channel_set_flags (data->child_stderr_channel, G_IO_FLAG_NONBLOCK, NULL);
+ data->child_stderr_source = g_io_create_watch (data->child_stderr_channel, G_IO_IN);
+ g_source_set_callback (data->child_stderr_source, (GSourceFunc) utils_read_child_stderr, data, NULL);
+ g_source_attach (data->child_stderr_source, data->main_context);
+ g_source_unref (data->child_stderr_source);
+
+ out:
+ ;
+}
+
+gboolean
+utils_spawn_finish (GAsyncResult *res,
+ gint *out_exit_status,
+ gchar **out_standard_output,
+ gchar **out_standard_error,
+ GError **error)
+{
+ GSimpleAsyncResult *simple = G_SIMPLE_ASYNC_RESULT (res);
+ UtilsSpawnData *data;
+ gboolean ret = FALSE;
+
+ g_return_val_if_fail (G_IS_ASYNC_RESULT (res), FALSE);
+ g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
+
+ g_warn_if_fail (g_simple_async_result_get_source_tag (simple) == utils_spawn);
+
+ if (g_simple_async_result_propagate_error (simple, error))
+ goto out;
+
+ data = g_simple_async_result_get_op_res_gpointer (simple);
+
+ if (data->timed_out)
+ {
+ g_set_error (error,
+ G_IO_ERROR,
+ G_IO_ERROR_TIMED_OUT,
+ "Timed out after %d seconds",
+ data->timeout_seconds);
+ goto out;
+ }
+
+ if (out_exit_status != NULL)
+ *out_exit_status = data->exit_status;
+
+ if (out_standard_output != NULL)
+ *out_standard_output = g_strdup (data->child_stdout->str);
+
+ if (out_standard_error != NULL)
+ *out_standard_error = g_strdup (data->child_stderr->str);
+
+ ret = TRUE;
+
+ out:
+ return ret;
+}
--
2.26.2