2946 lines
86 KiB
C
2946 lines
86 KiB
C
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
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/* NetworkManager -- Network link manager
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Copyright 2004 - 2014 Red Hat, Inc.
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* Copyright 2005 - 2008 Novell, Inc.
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*/
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#include "nm-default.h"
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#include "nm-core-utils.h"
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#include <errno.h>
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#include <fcntl.h>
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#include <string.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <resolv.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <sys/stat.h>
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#include <linux/if.h>
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#include <linux/if_infiniband.h>
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#include <net/ethernet.h>
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#include "nm-utils.h"
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#include "nm-core-internal.h"
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#include "nm-setting-connection.h"
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#include "nm-setting-ip4-config.h"
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#include "nm-setting-ip6-config.h"
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#include "nm-setting-wireless.h"
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#include "nm-setting-wireless-security.h"
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/*
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* Some toolchains (E.G. uClibc 0.9.33 and earlier) don't export
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* CLOCK_BOOTTIME even though the kernel supports it, so provide a
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* local definition
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*/
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#ifndef CLOCK_BOOTTIME
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#define CLOCK_BOOTTIME 7
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#endif
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G_STATIC_ASSERT (sizeof (NMUtilsTestFlags) <= sizeof (int));
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int _nm_utils_testing = 0;
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gboolean
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nm_utils_get_testing_initialized ()
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{
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NMUtilsTestFlags flags;
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flags = (NMUtilsTestFlags) _nm_utils_testing;
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if (flags == NM_UTILS_TEST_NONE)
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flags = (NMUtilsTestFlags) g_atomic_int_get (&_nm_utils_testing);
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return flags != NM_UTILS_TEST_NONE;
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}
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NMUtilsTestFlags
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nm_utils_get_testing ()
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{
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NMUtilsTestFlags flags;
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flags = (NMUtilsTestFlags) _nm_utils_testing;
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if (flags != NM_UTILS_TEST_NONE) {
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/* Flags already initialized. Return them. */
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return flags & NM_UTILS_TEST_ALL;
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}
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/* Accessing nm_utils_get_testing() causes us to set the flags to initialized.
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* Detecting running tests also based on g_test_initialized(). */
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flags = _NM_UTILS_TEST_INITIALIZED;
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if (g_test_initialized ())
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flags |= _NM_UTILS_TEST_GENERAL;
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if (g_atomic_int_compare_and_exchange (&_nm_utils_testing, 0, (int) flags)) {
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/* Done. We set it. */
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return flags & NM_UTILS_TEST_ALL;
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}
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/* It changed in the meantime (??). Re-read the value. */
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return ((NMUtilsTestFlags) _nm_utils_testing) & NM_UTILS_TEST_ALL;
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}
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void
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_nm_utils_set_testing (NMUtilsTestFlags flags)
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{
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g_assert (!NM_FLAGS_ANY (flags, ~NM_UTILS_TEST_ALL));
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/* mask out everything except ALL, and always set GENERAL. */
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flags = (flags & NM_UTILS_TEST_ALL) | (_NM_UTILS_TEST_GENERAL | _NM_UTILS_TEST_INITIALIZED);
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if (!g_atomic_int_compare_and_exchange (&_nm_utils_testing, 0, (int) flags)) {
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/* We only allow setting _nm_utils_set_testing() once, before fetching the
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* value with nm_utils_get_testing(). */
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g_return_if_reached ();
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}
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}
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/*****************************************************************************/
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G_DEFINE_QUARK (nm-utils-error-quark, nm_utils_error)
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void
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nm_utils_error_set_cancelled (GError **error,
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gboolean is_disposing,
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const char *instance_name)
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{
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if (is_disposing) {
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g_set_error (error, NM_UTILS_ERROR, NM_UTILS_ERROR_CANCELLED_DISPOSING,
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"Disposing %s instance",
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instance_name && *instance_name ? instance_name : "source");
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} else {
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g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_CANCELLED,
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"Request cancelled");
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}
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}
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gboolean
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nm_utils_error_is_cancelled (GError *error,
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gboolean consider_is_disposing)
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{
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if (error) {
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if (g_error_matches (error, G_IO_ERROR, G_IO_ERROR_CANCELLED))
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return TRUE;
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if ( consider_is_disposing
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&& g_error_matches (error, NM_UTILS_ERROR, NM_UTILS_ERROR_CANCELLED_DISPOSING))
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return TRUE;
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}
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return FALSE;
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}
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/*****************************************************************************/
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static GSList *_singletons = NULL;
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static gboolean _singletons_shutdown = FALSE;
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static void
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_nm_singleton_instance_weak_cb (gpointer data,
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GObject *where_the_object_was)
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{
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_singletons = g_slist_remove (_singletons, where_the_object_was);
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}
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static void __attribute__((destructor))
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_nm_singleton_instance_destroy (void)
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{
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_singletons_shutdown = TRUE;
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while (_singletons) {
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GObject *instance = _singletons->data;
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_singletons = g_slist_delete_link (_singletons, _singletons);
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g_object_weak_unref (instance, _nm_singleton_instance_weak_cb, NULL);
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if (instance->ref_count > 1)
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nm_log_dbg (LOGD_CORE, "disown %s singleton (%p)", G_OBJECT_TYPE_NAME (instance), instance);
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g_object_unref (instance);
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}
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}
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void
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_nm_singleton_instance_register_destruction (GObject *instance)
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{
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g_return_if_fail (G_IS_OBJECT (instance));
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/* Don't allow registration after shutdown. We only destroy the singletons
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* once. */
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g_return_if_fail (!_singletons_shutdown);
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g_object_weak_ref (instance, _nm_singleton_instance_weak_cb, NULL);
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_singletons = g_slist_prepend (_singletons, instance);
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}
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/*****************************************************************************/
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gint
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nm_utils_ascii_str_to_bool (const char *str,
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gint default_value)
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{
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gsize len;
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char *s = NULL;
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if (!str)
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return default_value;
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while (str[0] && g_ascii_isspace (str[0]))
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str++;
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if (!str[0])
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return default_value;
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len = strlen (str);
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if (g_ascii_isspace (str[len - 1])) {
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s = g_strdup (str);
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g_strchomp (s);
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str = s;
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}
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if (!g_ascii_strcasecmp (str, "true") || !g_ascii_strcasecmp (str, "yes") || !g_ascii_strcasecmp (str, "on") || !g_ascii_strcasecmp (str, "1"))
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default_value = TRUE;
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else if (!g_ascii_strcasecmp (str, "false") || !g_ascii_strcasecmp (str, "no") || !g_ascii_strcasecmp (str, "off") || !g_ascii_strcasecmp (str, "0"))
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default_value = FALSE;
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if (s)
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g_free (s);
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return default_value;
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}
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/*****************************************************************************/
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/*
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* nm_ethernet_address_is_valid:
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* @addr: pointer to a binary or ASCII Ethernet address
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* @len: length of @addr, or -1 if @addr is ASCII
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*
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* Compares an Ethernet address against known invalid addresses.
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* Returns: %TRUE if @addr is a valid Ethernet address, %FALSE if it is not.
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*/
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gboolean
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nm_ethernet_address_is_valid (gconstpointer addr, gssize len)
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{
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guint8 invalid_addr[4][ETH_ALEN] = {
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{0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF},
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{0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
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{0x44, 0x44, 0x44, 0x44, 0x44, 0x44},
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{0x00, 0x30, 0xb4, 0x00, 0x00, 0x00}, /* prism54 dummy MAC */
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};
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guint8 addr_bin[ETH_ALEN];
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guint i;
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if (!addr) {
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g_return_val_if_fail (len == -1 || len == ETH_ALEN, FALSE);
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return FALSE;
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}
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if (len == -1) {
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if (!nm_utils_hwaddr_aton (addr, addr_bin, ETH_ALEN))
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return FALSE;
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addr = addr_bin;
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} else if (len != ETH_ALEN)
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g_return_val_if_reached (FALSE);
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/* Check for multicast address */
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if ((((guint8 *) addr)[0]) & 0x01)
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return FALSE;
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for (i = 0; i < G_N_ELEMENTS (invalid_addr); i++) {
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if (nm_utils_hwaddr_matches (addr, ETH_ALEN, invalid_addr[i], ETH_ALEN))
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return FALSE;
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}
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return TRUE;
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}
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/* nm_utils_ip4_address_clear_host_address:
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* @addr: source ip6 address
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* @plen: prefix length of network
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*
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* returns: the input address, with the host address set to 0.
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*/
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in_addr_t
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nm_utils_ip4_address_clear_host_address (in_addr_t addr, guint8 plen)
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{
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return addr & nm_utils_ip4_prefix_to_netmask (plen);
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}
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/* nm_utils_ip6_address_clear_host_address:
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* @dst: destination output buffer, will contain the network part of the @src address
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* @src: source ip6 address
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* @plen: prefix length of network
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*
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* Note: this function is self assignment safe, to update @src inplace, set both
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* @dst and @src to the same destination.
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*/
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const struct in6_addr *
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nm_utils_ip6_address_clear_host_address (struct in6_addr *dst, const struct in6_addr *src, guint8 plen)
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{
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g_return_val_if_fail (plen <= 128, NULL);
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g_return_val_if_fail (src, NULL);
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g_return_val_if_fail (dst, NULL);
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if (plen < 128) {
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guint nbytes = plen / 8;
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guint nbits = plen % 8;
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if (nbytes && dst != src)
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memcpy (dst, src, nbytes);
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if (nbits) {
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dst->s6_addr[nbytes] = (src->s6_addr[nbytes] & (0xFF << (8 - nbits)));
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nbytes++;
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}
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if (nbytes <= 15)
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memset (&dst->s6_addr[nbytes], 0, 16 - nbytes);
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} else if (src != dst)
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*dst = *src;
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return dst;
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}
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void
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nm_utils_array_remove_at_indexes (GArray *array, const guint *indexes_to_delete, gsize len)
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{
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gsize elt_size;
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guint index_to_delete;
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guint i_src;
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guint mm_src, mm_dst, mm_len;
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gsize i_itd;
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guint res_length;
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g_return_if_fail (array);
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if (!len)
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return;
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g_return_if_fail (indexes_to_delete);
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elt_size = g_array_get_element_size (array);
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i_itd = 0;
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index_to_delete = indexes_to_delete[0];
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if (index_to_delete >= array->len)
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g_return_if_reached ();
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res_length = array->len - 1;
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mm_dst = index_to_delete;
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mm_src = index_to_delete;
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mm_len = 0;
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for (i_src = index_to_delete; i_src < array->len; i_src++) {
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if (i_src < index_to_delete)
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mm_len++;
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else {
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/* we require indexes_to_delete to contain non-repeated, ascending
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* indexes. Otherwise we would need to presort the indexes. */
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while (TRUE) {
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guint dd;
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if (i_itd + 1 >= len) {
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index_to_delete = G_MAXUINT;
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break;
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}
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dd = indexes_to_delete[++i_itd];
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if (dd > index_to_delete) {
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if (dd >= array->len)
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g_warn_if_reached ();
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else {
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g_assert (res_length > 0);
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res_length--;
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}
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index_to_delete = dd;
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break;
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}
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g_warn_if_reached ();
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}
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if (mm_len) {
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memmove (&array->data[mm_dst * elt_size],
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&array->data[mm_src * elt_size],
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mm_len * elt_size);
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mm_dst += mm_len;
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mm_src += mm_len + 1;
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mm_len = 0;
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} else
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mm_src++;
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}
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}
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if (mm_len) {
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memmove (&array->data[mm_dst * elt_size],
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&array->data[mm_src * elt_size],
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mm_len * elt_size);
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}
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g_array_set_size (array, res_length);
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}
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int
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nm_spawn_process (const char *args, GError **error)
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{
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GError *local = NULL;
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gint num_args;
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char **argv = NULL;
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int status = -1;
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g_return_val_if_fail (args != NULL, -1);
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g_return_val_if_fail (!error || !*error, -1);
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if (g_shell_parse_argv (args, &num_args, &argv, &local)) {
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g_spawn_sync ("/", argv, NULL, 0, NULL, NULL, NULL, NULL, &status, &local);
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g_strfreev (argv);
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}
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if (local) {
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nm_log_warn (LOGD_CORE, "could not spawn process '%s': %s", args, local->message);
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g_propagate_error (error, local);
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}
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return status;
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}
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static const char *
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_trunk_first_line (char *str)
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{
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char *s;
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s = strchr (str, '\n');
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if (s)
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s[0] = '\0';
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return str;
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}
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int
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nm_utils_modprobe (GError **error, gboolean suppress_error_logging, const char *arg1, ...)
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{
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gs_unref_ptrarray GPtrArray *argv = NULL;
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int exit_status;
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gs_free char *_log_str = NULL;
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#define ARGV_TO_STR(argv) (_log_str ? _log_str : (_log_str = g_strjoinv (" ", (char **) argv->pdata)))
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GError *local = NULL;
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va_list ap;
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NMLogLevel llevel = suppress_error_logging ? LOGL_DEBUG : LOGL_ERR;
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gs_free char *std_out = NULL, *std_err = NULL;
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g_return_val_if_fail (!error || !*error, -1);
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g_return_val_if_fail (arg1, -1);
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/* construct the argument list */
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argv = g_ptr_array_sized_new (4);
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g_ptr_array_add (argv, "/sbin/modprobe");
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g_ptr_array_add (argv, (char *) arg1);
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va_start (ap, arg1);
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while ((arg1 = va_arg (ap, const char *)))
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g_ptr_array_add (argv, (char *) arg1);
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va_end (ap);
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g_ptr_array_add (argv, NULL);
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nm_log_dbg (LOGD_CORE, "modprobe: '%s'", ARGV_TO_STR (argv));
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if (!g_spawn_sync (NULL, (char **) argv->pdata, NULL, 0, NULL, NULL, &std_out, &std_err, &exit_status, &local)) {
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nm_log (llevel, LOGD_CORE, "modprobe: '%s' failed: %s", ARGV_TO_STR (argv), local->message);
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g_propagate_error (error, local);
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return -1;
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} else if (exit_status != 0) {
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nm_log (llevel, LOGD_CORE, "modprobe: '%s' exited with error %d%s%s%s%s%s%s", ARGV_TO_STR (argv), exit_status,
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std_out&&*std_out ? " (" : "", std_out&&*std_out ? _trunk_first_line (std_out) : "", std_out&&*std_out ? ")" : "",
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std_err&&*std_err ? " (" : "", std_err&&*std_err ? _trunk_first_line (std_err) : "", std_err&&*std_err ? ")" : "");
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}
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return exit_status;
|
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}
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|
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/**
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|
* nm_utils_get_start_time_for_pid:
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* @pid: the process identifier
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* @out_state: return the state character, like R, S, Z. See `man 5 proc`.
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|
* @out_ppid: parent process id
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|
*
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|
* Originally copied from polkit source (src/polkit/polkitunixprocess.c)
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|
* and adjusted.
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|
*
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|
* Returns: the timestamp when the process started (by parsing /proc/$PID/stat).
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|
* If an error occurs (e.g. the process does not exist), 0 is returned.
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|
*
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* The returned start time counts since boot, in the unit HZ (with HZ usually being (1/100) seconds)
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**/
|
|
guint64
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nm_utils_get_start_time_for_pid (pid_t pid, char *out_state, pid_t *out_ppid)
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|
{
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|
guint64 start_time;
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|
char filename[256];
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|
gs_free gchar *contents = NULL;
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|
size_t length;
|
|
gs_strfreev gchar **tokens = NULL;
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|
guint num_tokens;
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|
gchar *p;
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|
gchar *endp;
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|
char state = '\0';
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|
gint64 ppid = 0;
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|
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start_time = 0;
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contents = NULL;
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|
|
g_return_val_if_fail (pid > 0, 0);
|
|
|
|
nm_sprintf_buf (filename, "/proc/%"G_GUINT64_FORMAT"/stat", (guint64) pid);
|
|
|
|
if (!g_file_get_contents (filename, &contents, &length, NULL))
|
|
goto out;
|
|
|
|
/* start time is the token at index 19 after the '(process name)' entry - since only this
|
|
* field can contain the ')' character, search backwards for this to avoid malicious
|
|
* processes trying to fool us
|
|
*/
|
|
p = strrchr (contents, ')');
|
|
if (p == NULL)
|
|
goto out;
|
|
p += 2; /* skip ') ' */
|
|
if (p - contents >= (int) length)
|
|
goto out;
|
|
|
|
state = p[0];
|
|
|
|
tokens = g_strsplit (p, " ", 0);
|
|
|
|
num_tokens = g_strv_length (tokens);
|
|
|
|
if (num_tokens < 20)
|
|
goto out;
|
|
|
|
if (out_ppid)
|
|
ppid = _nm_utils_ascii_str_to_int64 (tokens[1], 10, 1, G_MAXINT, 0);
|
|
|
|
errno = 0;
|
|
start_time = strtoull (tokens[19], &endp, 10);
|
|
if (*endp != '\0' || errno != 0)
|
|
start_time = 0;
|
|
|
|
out:
|
|
if (out_state)
|
|
*out_state = state;
|
|
if (out_ppid)
|
|
*out_ppid = ppid;
|
|
|
|
return start_time;
|
|
}
|
|
|
|
/******************************************************************************************/
|
|
|
|
typedef struct {
|
|
pid_t pid;
|
|
NMLogDomain log_domain;
|
|
union {
|
|
struct {
|
|
gint64 wait_start_us;
|
|
guint source_timeout_kill_id;
|
|
} async;
|
|
struct {
|
|
gboolean success;
|
|
int child_status;
|
|
} sync;
|
|
};
|
|
NMUtilsKillChildAsyncCb callback;
|
|
void *user_data;
|
|
|
|
char log_name[1]; /* variable-length object, must be last element!! */
|
|
} KillChildAsyncData;
|
|
|
|
#define LOG_NAME_FMT "kill child process '%s' (%ld)"
|
|
#define LOG_NAME_PROCESS_FMT "kill process '%s' (%ld)"
|
|
#define LOG_NAME_ARGS log_name,(long)pid
|
|
|
|
static KillChildAsyncData *
|
|
_kc_async_data_alloc (pid_t pid, NMLogDomain log_domain, const char *log_name, NMUtilsKillChildAsyncCb callback, void *user_data)
|
|
{
|
|
KillChildAsyncData *data;
|
|
size_t log_name_len;
|
|
|
|
/* append the name at the end of our KillChildAsyncData. */
|
|
log_name_len = strlen (LOG_NAME_FMT) + 20 + strlen (log_name);
|
|
data = g_malloc (sizeof (KillChildAsyncData) - 1 + log_name_len);
|
|
g_snprintf (data->log_name, log_name_len, LOG_NAME_FMT, LOG_NAME_ARGS);
|
|
|
|
data->pid = pid;
|
|
data->user_data = user_data;
|
|
data->callback = callback;
|
|
data->log_domain = log_domain;
|
|
|
|
return data;
|
|
}
|
|
|
|
#define KC_EXIT_TO_STRING_BUF_SIZE 128
|
|
static const char *
|
|
_kc_exit_to_string (char *buf, int exit)
|
|
#define _kc_exit_to_string(buf, exit) ( G_STATIC_ASSERT_EXPR(sizeof (buf) == KC_EXIT_TO_STRING_BUF_SIZE && sizeof ((buf)[0]) == 1), _kc_exit_to_string (buf, exit) )
|
|
{
|
|
if (WIFEXITED (exit))
|
|
g_snprintf (buf, KC_EXIT_TO_STRING_BUF_SIZE, "normally with status %d", WEXITSTATUS (exit));
|
|
else if (WIFSIGNALED (exit))
|
|
g_snprintf (buf, KC_EXIT_TO_STRING_BUF_SIZE, "by signal %d", WTERMSIG (exit));
|
|
else
|
|
g_snprintf (buf, KC_EXIT_TO_STRING_BUF_SIZE, "with unexpected status %d", exit);
|
|
return buf;
|
|
}
|
|
|
|
static const char *
|
|
_kc_signal_to_string (int sig)
|
|
{
|
|
switch (sig) {
|
|
case 0: return "no signal (0)";
|
|
case SIGKILL: return "SIGKILL (" G_STRINGIFY (SIGKILL) ")";
|
|
case SIGTERM: return "SIGTERM (" G_STRINGIFY (SIGTERM) ")";
|
|
default:
|
|
return "Unexpected signal";
|
|
}
|
|
}
|
|
|
|
#define KC_WAITED_TO_STRING 100
|
|
static const char *
|
|
_kc_waited_to_string (char *buf, gint64 wait_start_us)
|
|
#define _kc_waited_to_string(buf, wait_start_us) ( G_STATIC_ASSERT_EXPR(sizeof (buf) == KC_WAITED_TO_STRING && sizeof ((buf)[0]) == 1), _kc_waited_to_string (buf, wait_start_us) )
|
|
{
|
|
g_snprintf (buf, KC_WAITED_TO_STRING, " (%ld usec elapsed)", (long) (nm_utils_get_monotonic_timestamp_us () - wait_start_us));
|
|
return buf;
|
|
}
|
|
|
|
static void
|
|
_kc_cb_watch_child (GPid pid, gint status, gpointer user_data)
|
|
{
|
|
KillChildAsyncData *data = user_data;
|
|
char buf_exit[KC_EXIT_TO_STRING_BUF_SIZE], buf_wait[KC_WAITED_TO_STRING];
|
|
|
|
if (data->async.source_timeout_kill_id)
|
|
g_source_remove (data->async.source_timeout_kill_id);
|
|
|
|
nm_log_dbg (data->log_domain, "%s: terminated %s%s",
|
|
data->log_name, _kc_exit_to_string (buf_exit, status),
|
|
_kc_waited_to_string (buf_wait, data->async.wait_start_us));
|
|
|
|
if (data->callback)
|
|
data->callback (pid, TRUE, status, data->user_data);
|
|
|
|
g_free (data);
|
|
}
|
|
|
|
static gboolean
|
|
_kc_cb_timeout_grace_period (void *user_data)
|
|
{
|
|
KillChildAsyncData *data = user_data;
|
|
int ret, errsv;
|
|
|
|
data->async.source_timeout_kill_id = 0;
|
|
|
|
if ((ret = kill (data->pid, SIGKILL)) != 0) {
|
|
errsv = errno;
|
|
/* ESRCH means, process does not exist or is already a zombie. */
|
|
if (errsv != ESRCH) {
|
|
nm_log_err (LOGD_CORE | data->log_domain, "%s: kill(SIGKILL) returned unexpected return value %d: (%s, %d)",
|
|
data->log_name, ret, strerror (errsv), errsv);
|
|
}
|
|
} else {
|
|
nm_log_dbg (data->log_domain, "%s: process not terminated after %ld usec. Sending SIGKILL signal",
|
|
data->log_name, (long) (nm_utils_get_monotonic_timestamp_us () - data->async.wait_start_us));
|
|
}
|
|
|
|
return G_SOURCE_REMOVE;
|
|
}
|
|
|
|
static gboolean
|
|
_kc_invoke_callback_idle (gpointer user_data)
|
|
{
|
|
KillChildAsyncData *data = user_data;
|
|
|
|
if (data->sync.success) {
|
|
char buf_exit[KC_EXIT_TO_STRING_BUF_SIZE];
|
|
|
|
nm_log_dbg (data->log_domain, "%s: invoke callback: terminated %s",
|
|
data->log_name, _kc_exit_to_string (buf_exit, data->sync.child_status));
|
|
} else
|
|
nm_log_dbg (data->log_domain, "%s: invoke callback: killing child failed", data->log_name);
|
|
|
|
data->callback (data->pid, data->sync.success, data->sync.child_status, data->user_data);
|
|
g_free (data);
|
|
|
|
return G_SOURCE_REMOVE;
|
|
}
|
|
|
|
static void
|
|
_kc_invoke_callback (pid_t pid, NMLogDomain log_domain, const char *log_name, NMUtilsKillChildAsyncCb callback, void *user_data, gboolean success, int child_status)
|
|
{
|
|
KillChildAsyncData *data;
|
|
|
|
if (!callback)
|
|
return;
|
|
|
|
data = _kc_async_data_alloc (pid, log_domain, log_name, callback, user_data);
|
|
data->sync.success = success;
|
|
data->sync.child_status = child_status;
|
|
|
|
g_idle_add (_kc_invoke_callback_idle, data);
|
|
}
|
|
|
|
/* nm_utils_kill_child_async:
|
|
* @pid: the process id of the process to kill
|
|
* @sig: signal to send initially. Set to 0 to send not signal.
|
|
* @log_domain: the logging domain used for logging (LOGD_NONE to suppress logging)
|
|
* @log_name: for logging, the name of the processes to kill
|
|
* @wait_before_kill_msec: Waittime in milliseconds before sending %SIGKILL signal. Set this value
|
|
* to zero, not to send %SIGKILL. If @sig is already %SIGKILL, this parameter is ignored.
|
|
* @callback: (allow-none): callback after the child terminated. This function will always
|
|
* be invoked asynchronously.
|
|
* @user_data: passed on to callback
|
|
*
|
|
* Uses g_child_watch_add(), so note the glib comment: if you obtain pid from g_spawn_async() or
|
|
* g_spawn_async_with_pipes() you will need to pass %G_SPAWN_DO_NOT_REAP_CHILD as flag to the spawn
|
|
* function for the child watching to work.
|
|
* Also note, that you must g_source_remove() any other child watchers for @pid because glib
|
|
* supports only one watcher per child.
|
|
**/
|
|
void
|
|
nm_utils_kill_child_async (pid_t pid, int sig, NMLogDomain log_domain,
|
|
const char *log_name, guint32 wait_before_kill_msec,
|
|
NMUtilsKillChildAsyncCb callback, void *user_data)
|
|
{
|
|
int status = 0, errsv;
|
|
pid_t ret;
|
|
KillChildAsyncData *data;
|
|
char buf_exit[KC_EXIT_TO_STRING_BUF_SIZE];
|
|
|
|
g_return_if_fail (pid > 0);
|
|
g_return_if_fail (log_name != NULL);
|
|
|
|
/* let's see if the child already terminated... */
|
|
ret = waitpid (pid, &status, WNOHANG);
|
|
if (ret > 0) {
|
|
nm_log_dbg (log_domain, LOG_NAME_FMT ": process %ld already terminated %s",
|
|
LOG_NAME_ARGS, (long) ret, _kc_exit_to_string (buf_exit, status));
|
|
_kc_invoke_callback (pid, log_domain, log_name, callback, user_data, TRUE, status);
|
|
return;
|
|
} else if (ret != 0) {
|
|
errsv = errno;
|
|
/* ECHILD means, the process is not a child/does not exist or it has SIGCHILD blocked. */
|
|
if (errsv != ECHILD) {
|
|
nm_log_err (LOGD_CORE | log_domain, LOG_NAME_FMT ": unexpected error while waitpid: %s (%d)",
|
|
LOG_NAME_ARGS, strerror (errsv), errsv);
|
|
_kc_invoke_callback (pid, log_domain, log_name, callback, user_data, FALSE, -1);
|
|
return;
|
|
}
|
|
}
|
|
|
|
/* send the first signal. */
|
|
if (kill (pid, sig) != 0) {
|
|
errsv = errno;
|
|
/* ESRCH means, process does not exist or is already a zombie. */
|
|
if (errsv != ESRCH) {
|
|
nm_log_err (LOGD_CORE | log_domain, LOG_NAME_FMT ": unexpected error sending %s: %s (%d)",
|
|
LOG_NAME_ARGS, _kc_signal_to_string (sig), strerror (errsv), errsv);
|
|
_kc_invoke_callback (pid, log_domain, log_name, callback, user_data, FALSE, -1);
|
|
return;
|
|
}
|
|
|
|
/* let's try again with waitpid, probably there was a race... */
|
|
ret = waitpid (pid, &status, 0);
|
|
if (ret > 0) {
|
|
nm_log_dbg (log_domain, LOG_NAME_FMT ": process %ld already terminated %s",
|
|
LOG_NAME_ARGS, (long) ret, _kc_exit_to_string (buf_exit, status));
|
|
_kc_invoke_callback (pid, log_domain, log_name, callback, user_data, TRUE, status);
|
|
} else {
|
|
errsv = errno;
|
|
nm_log_err (LOGD_CORE | log_domain, LOG_NAME_FMT ": failed due to unexpected return value %ld by waitpid (%s, %d) after sending %s",
|
|
LOG_NAME_ARGS, (long) ret, strerror (errsv), errsv, _kc_signal_to_string (sig));
|
|
_kc_invoke_callback (pid, log_domain, log_name, callback, user_data, FALSE, -1);
|
|
}
|
|
return;
|
|
}
|
|
|
|
data = _kc_async_data_alloc (pid, log_domain, log_name, callback, user_data);
|
|
data->async.wait_start_us = nm_utils_get_monotonic_timestamp_us ();
|
|
|
|
if (sig != SIGKILL && wait_before_kill_msec > 0) {
|
|
data->async.source_timeout_kill_id = g_timeout_add (wait_before_kill_msec, _kc_cb_timeout_grace_period, data);
|
|
nm_log_dbg (log_domain, "%s: wait for process to terminate after sending %s (send SIGKILL in %ld milliseconds)...",
|
|
data->log_name, _kc_signal_to_string (sig), (long) wait_before_kill_msec);
|
|
} else {
|
|
data->async.source_timeout_kill_id = 0;
|
|
nm_log_dbg (log_domain, "%s: wait for process to terminate after sending %s...",
|
|
data->log_name, _kc_signal_to_string (sig));
|
|
}
|
|
|
|
g_child_watch_add (pid, _kc_cb_watch_child, data);
|
|
}
|
|
|
|
static inline gulong
|
|
_sleep_duration_convert_ms_to_us (guint32 sleep_duration_msec)
|
|
{
|
|
if (sleep_duration_msec > 0) {
|
|
guint64 x = (gint64) sleep_duration_msec * (guint64) 1000L;
|
|
|
|
return x < G_MAXULONG ? (gulong) x : G_MAXULONG;
|
|
}
|
|
return G_USEC_PER_SEC / 20;
|
|
}
|
|
|
|
/* nm_utils_kill_child_sync:
|
|
* @pid: process id to kill
|
|
* @sig: signal to sent initially. If 0, no signal is sent. If %SIGKILL, the
|
|
* second %SIGKILL signal is not sent after @wait_before_kill_msec milliseconds.
|
|
* @log_domain: log debug information for this domain. Errors and warnings are logged both
|
|
* as %LOGD_CORE and @log_domain.
|
|
* @log_name: name of the process to kill for logging.
|
|
* @child_status: (out) (allow-none): return the exit status of the child, if no error occured.
|
|
* @wait_before_kill_msec: Waittime in milliseconds before sending %SIGKILL signal. Set this value
|
|
* to zero, not to send %SIGKILL. If @sig is already %SIGKILL, this parameter has not effect.
|
|
* @sleep_duration_msec: the synchronous function sleeps repeatedly waiting for the child to terminate.
|
|
* Set to zero, to use the default (meaning 20 wakeups per seconds).
|
|
*
|
|
* Kill a child process synchronously and wait. The function first checks if the child already terminated
|
|
* and if it did, return the exit status. Otherwise send one @sig signal. @sig will always be
|
|
* sent unless the child already exited. If the child does not exit within @wait_before_kill_msec milliseconds,
|
|
* the function will send %SIGKILL and waits for the child indefinitly. If @wait_before_kill_msec is zero, no
|
|
* %SIGKILL signal will be sent.
|
|
*
|
|
* In case of error, errno is preserved to contain the last reason of failure.
|
|
**/
|
|
gboolean
|
|
nm_utils_kill_child_sync (pid_t pid, int sig, NMLogDomain log_domain, const char *log_name,
|
|
int *child_status, guint32 wait_before_kill_msec,
|
|
guint32 sleep_duration_msec)
|
|
{
|
|
int status = 0, errsv = 0;
|
|
pid_t ret;
|
|
gboolean success = FALSE;
|
|
gboolean was_waiting = FALSE, send_kill = FALSE;
|
|
char buf_exit[KC_EXIT_TO_STRING_BUF_SIZE];
|
|
char buf_wait[KC_WAITED_TO_STRING];
|
|
gint64 wait_start_us;
|
|
|
|
g_return_val_if_fail (pid > 0, FALSE);
|
|
g_return_val_if_fail (log_name != NULL, FALSE);
|
|
|
|
/* check if the child process already terminated... */
|
|
ret = waitpid (pid, &status, WNOHANG);
|
|
if (ret > 0) {
|
|
nm_log_dbg (log_domain, LOG_NAME_FMT ": process %ld already terminated %s",
|
|
LOG_NAME_ARGS, (long) ret, _kc_exit_to_string (buf_exit, status));
|
|
success = TRUE;
|
|
goto out;
|
|
} else if (ret != 0) {
|
|
errsv = errno;
|
|
/* ECHILD means, the process is not a child/does not exist or it has SIGCHILD blocked. */
|
|
if (errsv != ECHILD) {
|
|
nm_log_err (LOGD_CORE | log_domain, LOG_NAME_FMT ": unexpected error while waitpid: %s (%d)",
|
|
LOG_NAME_ARGS, strerror (errsv), errsv);
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
/* send first signal @sig */
|
|
if (kill (pid, sig) != 0) {
|
|
errsv = errno;
|
|
/* ESRCH means, process does not exist or is already a zombie. */
|
|
if (errsv != ESRCH) {
|
|
nm_log_err (LOGD_CORE | log_domain, LOG_NAME_FMT ": failed to send %s: %s (%d)",
|
|
LOG_NAME_ARGS, _kc_signal_to_string (sig), strerror (errsv), errsv);
|
|
} else {
|
|
/* let's try again with waitpid, probably there was a race... */
|
|
ret = waitpid (pid, &status, 0);
|
|
if (ret > 0) {
|
|
nm_log_dbg (log_domain, LOG_NAME_FMT ": process %ld already terminated %s",
|
|
LOG_NAME_ARGS, (long) ret, _kc_exit_to_string (buf_exit, status));
|
|
success = TRUE;
|
|
} else {
|
|
errsv = errno;
|
|
nm_log_err (LOGD_CORE | log_domain, LOG_NAME_FMT ": failed due to unexpected return value %ld by waitpid (%s, %d) after sending %s",
|
|
LOG_NAME_ARGS, (long) ret, strerror (errsv), errsv, _kc_signal_to_string (sig));
|
|
}
|
|
}
|
|
goto out;
|
|
}
|
|
|
|
wait_start_us = nm_utils_get_monotonic_timestamp_us ();
|
|
|
|
/* wait for the process to terminated... */
|
|
if (sig != SIGKILL) {
|
|
gint64 wait_until, now;
|
|
gulong sleep_time, sleep_duration_usec;
|
|
int loop_count = 0;
|
|
|
|
sleep_duration_usec = _sleep_duration_convert_ms_to_us (sleep_duration_msec);
|
|
wait_until = wait_before_kill_msec <= 0 ? 0 : wait_start_us + (((gint64) wait_before_kill_msec) * 1000L);
|
|
|
|
while (TRUE) {
|
|
ret = waitpid (pid, &status, WNOHANG);
|
|
if (ret > 0) {
|
|
nm_log_dbg (log_domain, LOG_NAME_FMT ": after sending %s, process %ld exited %s%s",
|
|
LOG_NAME_ARGS, _kc_signal_to_string (sig), (long) ret, _kc_exit_to_string (buf_exit, status),
|
|
was_waiting ? _kc_waited_to_string (buf_wait, wait_start_us) : "");
|
|
success = TRUE;
|
|
goto out;
|
|
}
|
|
if (ret == -1) {
|
|
errsv = errno;
|
|
/* ECHILD means, the process is not a child/does not exist or it has SIGCHILD blocked. */
|
|
if (errsv != ECHILD) {
|
|
nm_log_err (LOGD_CORE | log_domain, LOG_NAME_FMT ": after sending %s, waitpid failed with %s (%d)%s",
|
|
LOG_NAME_ARGS, _kc_signal_to_string (sig), strerror (errsv), errsv,
|
|
was_waiting ? _kc_waited_to_string (buf_wait, wait_start_us) : "");
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
if (!wait_until)
|
|
break;
|
|
|
|
now = nm_utils_get_monotonic_timestamp_us ();
|
|
if (now >= wait_until)
|
|
break;
|
|
|
|
if (!was_waiting) {
|
|
nm_log_dbg (log_domain, LOG_NAME_FMT ": waiting up to %ld milliseconds for process to terminate normally after sending %s...",
|
|
LOG_NAME_ARGS, (long) MAX (wait_before_kill_msec, 0), _kc_signal_to_string (sig));
|
|
was_waiting = TRUE;
|
|
}
|
|
|
|
sleep_time = MIN (wait_until - now, sleep_duration_usec);
|
|
if (loop_count < 20) {
|
|
/* At the beginning we expect the process to die fast.
|
|
* Limit the sleep time, the limit doubles with every iteration. */
|
|
sleep_time = MIN (sleep_time, (((guint64) 1) << loop_count) * G_USEC_PER_SEC / 2000);
|
|
loop_count++;
|
|
}
|
|
g_usleep (sleep_time);
|
|
}
|
|
|
|
/* send SIGKILL, if called with @wait_before_kill_msec > 0 */
|
|
if (wait_until) {
|
|
nm_log_dbg (log_domain, LOG_NAME_FMT ": sending SIGKILL...", LOG_NAME_ARGS);
|
|
|
|
send_kill = TRUE;
|
|
if (kill (pid, SIGKILL) != 0) {
|
|
errsv = errno;
|
|
/* ESRCH means, process does not exist or is already a zombie. */
|
|
if (errsv != ESRCH) {
|
|
nm_log_err (LOGD_CORE | log_domain, LOG_NAME_FMT ": failed to send SIGKILL (after sending %s), %s (%d)",
|
|
LOG_NAME_ARGS, _kc_signal_to_string (sig), strerror (errsv), errsv);
|
|
goto out;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!was_waiting) {
|
|
nm_log_dbg (log_domain, LOG_NAME_FMT ": waiting for process to terminate after sending %s%s...",
|
|
LOG_NAME_ARGS, _kc_signal_to_string (sig), send_kill ? " and SIGKILL" : "");
|
|
}
|
|
|
|
/* block until the child terminates. */
|
|
while ((ret = waitpid (pid, &status, 0)) <= 0) {
|
|
errsv = errno;
|
|
|
|
if (errsv != EINTR) {
|
|
nm_log_err (LOGD_CORE | log_domain, LOG_NAME_FMT ": after sending %s%s, waitpid failed with %s (%d)%s",
|
|
LOG_NAME_ARGS, _kc_signal_to_string (sig), send_kill ? " and SIGKILL" : "", strerror (errsv), errsv,
|
|
_kc_waited_to_string (buf_wait, wait_start_us));
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
nm_log_dbg (log_domain, LOG_NAME_FMT ": after sending %s%s, process %ld exited %s%s",
|
|
LOG_NAME_ARGS, _kc_signal_to_string (sig), send_kill ? " and SIGKILL" : "", (long) ret,
|
|
_kc_exit_to_string (buf_exit, status), _kc_waited_to_string (buf_wait, wait_start_us));
|
|
success = TRUE;
|
|
out:
|
|
if (child_status)
|
|
*child_status = success ? status : -1;
|
|
errno = success ? 0 : errsv;
|
|
return success;
|
|
}
|
|
|
|
/* nm_utils_kill_process_sync:
|
|
* @pid: process id to kill
|
|
* @start_time: the start time of the process to kill (as obtained by nm_utils_get_start_time_for_pid()).
|
|
* This is an optional argument, to avoid (somewhat) killing the wrong process as @pid
|
|
* might get recycled. You can pass 0, to not provide this parameter.
|
|
* @sig: signal to sent initially. If 0, no signal is sent. If %SIGKILL, the
|
|
* second %SIGKILL signal is not sent after @wait_before_kill_msec milliseconds.
|
|
* @log_domain: log debug information for this domain. Errors and warnings are logged both
|
|
* as %LOGD_CORE and @log_domain.
|
|
* @log_name: name of the process to kill for logging.
|
|
* @wait_before_kill_msec: Waittime in milliseconds before sending %SIGKILL signal. Set this value
|
|
* to zero, not to send %SIGKILL. If @sig is already %SIGKILL, this parameter has no effect.
|
|
* If @max_wait_msec is set but less then @wait_before_kill_msec, the final %SIGKILL will also
|
|
* not be send.
|
|
* @sleep_duration_msec: the synchronous function sleeps repeatedly waiting for the child to terminate.
|
|
* Set to zero, to use the default (meaning 20 wakeups per seconds).
|
|
* @max_wait_msec: if 0, waits indefinitely until the process is gone (or a zombie). Otherwise, this
|
|
* is the maxium wait time until returning. If @max_wait_msec is non-zero but smaller then @wait_before_kill_msec,
|
|
* we will not send a final %SIGKILL.
|
|
*
|
|
* Kill a non-child process synchronously and wait. This function will not return before the
|
|
* process with PID @pid is gone, the process is a zombie, or @max_wait_msec expires.
|
|
**/
|
|
void
|
|
nm_utils_kill_process_sync (pid_t pid, guint64 start_time, int sig, NMLogDomain log_domain,
|
|
const char *log_name, guint32 wait_before_kill_msec,
|
|
guint32 sleep_duration_msec, guint32 max_wait_msec)
|
|
{
|
|
int errsv;
|
|
guint64 start_time0;
|
|
gint64 wait_until_sigkill, now, wait_start_us, max_wait_until;
|
|
gulong sleep_time, sleep_duration_usec;
|
|
int loop_count = 0;
|
|
gboolean was_waiting = FALSE;
|
|
char buf_wait[KC_WAITED_TO_STRING];
|
|
char p_state;
|
|
|
|
g_return_if_fail (pid > 0);
|
|
g_return_if_fail (log_name != NULL);
|
|
g_return_if_fail (wait_before_kill_msec > 0);
|
|
|
|
start_time0 = nm_utils_get_start_time_for_pid (pid, &p_state, NULL);
|
|
if (start_time0 == 0) {
|
|
nm_log_dbg (log_domain, LOG_NAME_PROCESS_FMT ": cannot kill process %ld because it seems already gone",
|
|
LOG_NAME_ARGS, (long int) pid);
|
|
return;
|
|
}
|
|
if (start_time != 0 && start_time != start_time0) {
|
|
nm_log_dbg (log_domain, LOG_NAME_PROCESS_FMT ": don't kill process %ld because the start_time is unexpectedly %lu instead of %ld",
|
|
LOG_NAME_ARGS, (long int) pid, (long unsigned) start_time0, (long unsigned) start_time);
|
|
return;
|
|
}
|
|
|
|
switch (p_state) {
|
|
case 'Z':
|
|
case 'x':
|
|
case 'X':
|
|
nm_log_dbg (log_domain, LOG_NAME_PROCESS_FMT ": cannot kill process %ld because it is already a zombie (%c)",
|
|
LOG_NAME_ARGS, (long int) pid, p_state);
|
|
return;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (kill (pid, sig) != 0) {
|
|
errsv = errno;
|
|
/* ESRCH means, process does not exist or is already a zombie. */
|
|
if (errsv == ESRCH) {
|
|
nm_log_dbg (log_domain, LOG_NAME_PROCESS_FMT ": failed to send %s because process seems gone",
|
|
LOG_NAME_ARGS, _kc_signal_to_string (sig));
|
|
} else {
|
|
nm_log_warn (LOGD_CORE | log_domain, LOG_NAME_PROCESS_FMT ": failed to send %s: %s (%d)",
|
|
LOG_NAME_ARGS, _kc_signal_to_string (sig), strerror (errsv), errsv);
|
|
}
|
|
return;
|
|
}
|
|
|
|
/* wait for the process to terminated... */
|
|
|
|
wait_start_us = nm_utils_get_monotonic_timestamp_us ();
|
|
|
|
sleep_duration_usec = _sleep_duration_convert_ms_to_us (sleep_duration_msec);
|
|
if (sig != SIGKILL)
|
|
wait_until_sigkill = wait_start_us + (((gint64) wait_before_kill_msec) * 1000L);
|
|
else
|
|
wait_until_sigkill = 0;
|
|
if (max_wait_msec > 0) {
|
|
max_wait_until = wait_start_us + (((gint64) max_wait_msec) * 1000L);
|
|
if (wait_until_sigkill > 0 && wait_until_sigkill > max_wait_msec)
|
|
wait_until_sigkill = 0;
|
|
} else
|
|
max_wait_until = 0;
|
|
|
|
while (TRUE) {
|
|
start_time = nm_utils_get_start_time_for_pid (pid, &p_state, NULL);
|
|
|
|
if (start_time != start_time0) {
|
|
nm_log_dbg (log_domain, LOG_NAME_PROCESS_FMT ": process is gone after sending signal %s%s",
|
|
LOG_NAME_ARGS, _kc_signal_to_string (sig),
|
|
was_waiting ? _kc_waited_to_string (buf_wait, wait_start_us) : "");
|
|
return;
|
|
}
|
|
switch (p_state) {
|
|
case 'Z':
|
|
case 'x':
|
|
case 'X':
|
|
nm_log_dbg (log_domain, LOG_NAME_PROCESS_FMT ": process is a zombie (%c) after sending signal %s%s",
|
|
LOG_NAME_ARGS, p_state, _kc_signal_to_string (sig),
|
|
was_waiting ? _kc_waited_to_string (buf_wait, wait_start_us) : "");
|
|
return;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (kill (pid, 0) != 0) {
|
|
errsv = errno;
|
|
/* ESRCH means, process does not exist or is already a zombie. */
|
|
if (errsv == ESRCH) {
|
|
nm_log_dbg (log_domain, LOG_NAME_PROCESS_FMT ": process is gone or a zombie after sending signal %s%s",
|
|
LOG_NAME_ARGS, _kc_signal_to_string (sig),
|
|
was_waiting ? _kc_waited_to_string (buf_wait, wait_start_us) : "");
|
|
} else {
|
|
nm_log_warn (LOGD_CORE | log_domain, LOG_NAME_PROCESS_FMT ": failed to kill(%ld, 0): %s (%d)%s",
|
|
LOG_NAME_ARGS, (long int) pid, strerror (errsv), errsv,
|
|
was_waiting ? _kc_waited_to_string (buf_wait, wait_start_us) : "");
|
|
}
|
|
return;
|
|
}
|
|
|
|
sleep_time = sleep_duration_usec;
|
|
now = nm_utils_get_monotonic_timestamp_us ();
|
|
|
|
if ( max_wait_until != 0
|
|
&& now >= max_wait_until) {
|
|
if (wait_until_sigkill != 0) {
|
|
/* wait_before_kill_msec is not larger then max_wait_until but we did not yet send
|
|
* SIGKILL. Although we already reached our timeout, we don't want to skip sending
|
|
* the signal. Even if we don't wait for the process to disappear. */
|
|
nm_log_dbg (log_domain, LOG_NAME_PROCESS_FMT ": sending SIGKILL", LOG_NAME_ARGS);
|
|
kill (pid, SIGKILL);
|
|
}
|
|
nm_log_warn (log_domain, LOG_NAME_PROCESS_FMT ": timeout %u msec waiting for process to disappear (after sending %s)%s",
|
|
LOG_NAME_ARGS, (unsigned) max_wait_until, _kc_signal_to_string (sig),
|
|
was_waiting ? _kc_waited_to_string (buf_wait, wait_start_us) : "");
|
|
return;
|
|
}
|
|
|
|
if (wait_until_sigkill != 0) {
|
|
if (now >= wait_until_sigkill) {
|
|
/* Still not dead. SIGKILL now... */
|
|
nm_log_dbg (log_domain, LOG_NAME_PROCESS_FMT ": sending SIGKILL", LOG_NAME_ARGS);
|
|
if (kill (pid, SIGKILL) != 0) {
|
|
errsv = errno;
|
|
/* ESRCH means, process does not exist or is already a zombie. */
|
|
if (errsv != ESRCH) {
|
|
nm_log_dbg (log_domain, LOG_NAME_PROCESS_FMT ": process is gone or a zombie%s",
|
|
LOG_NAME_ARGS, _kc_waited_to_string (buf_wait, wait_start_us));
|
|
} else {
|
|
nm_log_warn (LOGD_CORE | log_domain, LOG_NAME_PROCESS_FMT ": failed to send SIGKILL (after sending %s), %s (%d)%s",
|
|
LOG_NAME_ARGS, _kc_signal_to_string (sig), strerror (errsv), errsv,
|
|
_kc_waited_to_string (buf_wait, wait_start_us));
|
|
}
|
|
return;
|
|
}
|
|
sig = SIGKILL;
|
|
wait_until_sigkill = 0;
|
|
loop_count = 0; /* reset the loop_count. Now we really expect the process to die quickly. */
|
|
} else
|
|
sleep_time = MIN (wait_until_sigkill - now, sleep_duration_usec);
|
|
}
|
|
|
|
if (!was_waiting) {
|
|
if (wait_until_sigkill != 0) {
|
|
nm_log_dbg (log_domain, LOG_NAME_PROCESS_FMT ": waiting up to %ld milliseconds for process to disappear before sending KILL signal after sending %s...",
|
|
LOG_NAME_ARGS, (long) wait_before_kill_msec, _kc_signal_to_string (sig));
|
|
} else if (max_wait_until != 0) {
|
|
nm_log_dbg (log_domain, LOG_NAME_PROCESS_FMT ": waiting up to %ld milliseconds for process to disappear after sending %s...",
|
|
LOG_NAME_ARGS, (long) max_wait_msec, _kc_signal_to_string (sig));
|
|
} else {
|
|
nm_log_dbg (log_domain, LOG_NAME_PROCESS_FMT ": waiting for process to disappear after sending %s...",
|
|
LOG_NAME_ARGS, _kc_signal_to_string (sig));
|
|
}
|
|
was_waiting = TRUE;
|
|
}
|
|
|
|
if (loop_count < 20) {
|
|
/* At the beginning we expect the process to die fast.
|
|
* Limit the sleep time, the limit doubles with every iteration. */
|
|
sleep_time = MIN (sleep_time, (((guint64) 1) << loop_count) * G_USEC_PER_SEC / 2000);
|
|
loop_count++;
|
|
}
|
|
g_usleep (sleep_time);
|
|
}
|
|
}
|
|
#undef LOG_NAME_FMT
|
|
#undef LOG_NAME_PROCESS_FMT
|
|
#undef LOG_NAME_ARGS
|
|
|
|
const char *const NM_PATHS_DEFAULT[] = {
|
|
PREFIX "/sbin/",
|
|
PREFIX "/bin/",
|
|
"/sbin/",
|
|
"/usr/sbin/",
|
|
"/usr/local/sbin/",
|
|
"/bin/",
|
|
"/usr/bin/",
|
|
"/usr/local/bin/",
|
|
NULL,
|
|
};
|
|
|
|
const char *
|
|
nm_utils_find_helper(const char *progname, const char *try_first, GError **error)
|
|
{
|
|
return nm_utils_file_search_in_paths (progname, try_first, NM_PATHS_DEFAULT, G_FILE_TEST_IS_EXECUTABLE, NULL, NULL, error);
|
|
}
|
|
|
|
/******************************************************************************************/
|
|
|
|
#define MAC_TAG "mac:"
|
|
#define INTERFACE_NAME_TAG "interface-name:"
|
|
#define DEVICE_TYPE_TAG "type:"
|
|
#define SUBCHAN_TAG "s390-subchannels:"
|
|
#define EXCEPT_TAG "except:"
|
|
#define MATCH_TAG_CONFIG_NM_VERSION "nm-version:"
|
|
#define MATCH_TAG_CONFIG_NM_VERSION_MIN "nm-version-min:"
|
|
#define MATCH_TAG_CONFIG_NM_VERSION_MAX "nm-version-max:"
|
|
#define MATCH_TAG_CONFIG_ENV "env:"
|
|
|
|
#define _spec_has_prefix(pspec, tag) \
|
|
({ \
|
|
const char **_spec = (pspec); \
|
|
gboolean _has = FALSE; \
|
|
\
|
|
if (!g_ascii_strncasecmp (*_spec, (""tag), NM_STRLEN (tag))) { \
|
|
*_spec += NM_STRLEN (tag); \
|
|
_has = TRUE; \
|
|
} \
|
|
_has; \
|
|
})
|
|
|
|
static const char *
|
|
_match_except (const char *spec_str, gboolean *out_except)
|
|
{
|
|
if (!g_ascii_strncasecmp (spec_str, EXCEPT_TAG, NM_STRLEN (EXCEPT_TAG))) {
|
|
spec_str += NM_STRLEN (EXCEPT_TAG);
|
|
*out_except = TRUE;
|
|
} else
|
|
*out_except = FALSE;
|
|
return spec_str;
|
|
}
|
|
|
|
NMMatchSpecMatchType
|
|
nm_match_spec_device_type (const GSList *specs, const char *device_type)
|
|
{
|
|
const GSList *iter;
|
|
NMMatchSpecMatchType match = NM_MATCH_SPEC_NO_MATCH;
|
|
|
|
if (!device_type || !*device_type)
|
|
return NM_MATCH_SPEC_NO_MATCH;
|
|
|
|
for (iter = specs; iter; iter = g_slist_next (iter)) {
|
|
const char *spec_str = iter->data;
|
|
gboolean except;
|
|
|
|
if (!spec_str || !*spec_str)
|
|
continue;
|
|
|
|
spec_str = _match_except (spec_str, &except);
|
|
|
|
if (g_ascii_strncasecmp (spec_str, DEVICE_TYPE_TAG, NM_STRLEN (DEVICE_TYPE_TAG)) != 0)
|
|
continue;
|
|
|
|
spec_str += NM_STRLEN (DEVICE_TYPE_TAG);
|
|
if (strcmp (spec_str, device_type) == 0) {
|
|
if (except)
|
|
return NM_MATCH_SPEC_NEG_MATCH;
|
|
match = NM_MATCH_SPEC_MATCH;
|
|
}
|
|
}
|
|
return match;
|
|
}
|
|
|
|
NMMatchSpecMatchType
|
|
nm_match_spec_hwaddr (const GSList *specs, const char *hwaddr)
|
|
{
|
|
const GSList *iter;
|
|
NMMatchSpecMatchType match = NM_MATCH_SPEC_NO_MATCH;
|
|
|
|
g_return_val_if_fail (hwaddr != NULL, NM_MATCH_SPEC_NO_MATCH);
|
|
|
|
for (iter = specs; iter; iter = g_slist_next (iter)) {
|
|
const char *spec_str = iter->data;
|
|
gboolean except;
|
|
|
|
if (!spec_str || !*spec_str)
|
|
continue;
|
|
|
|
spec_str = _match_except (spec_str, &except);
|
|
|
|
if ( !g_ascii_strncasecmp (spec_str, INTERFACE_NAME_TAG, NM_STRLEN (INTERFACE_NAME_TAG))
|
|
|| !g_ascii_strncasecmp (spec_str, SUBCHAN_TAG, NM_STRLEN (SUBCHAN_TAG))
|
|
|| !g_ascii_strncasecmp (spec_str, DEVICE_TYPE_TAG, NM_STRLEN (DEVICE_TYPE_TAG)))
|
|
continue;
|
|
|
|
if (!g_ascii_strncasecmp (spec_str, MAC_TAG, NM_STRLEN (MAC_TAG)))
|
|
spec_str += NM_STRLEN (MAC_TAG);
|
|
else if (except)
|
|
continue;
|
|
|
|
if (nm_utils_hwaddr_matches (spec_str, -1, hwaddr, -1)) {
|
|
if (except)
|
|
return NM_MATCH_SPEC_NEG_MATCH;
|
|
match = NM_MATCH_SPEC_MATCH;
|
|
}
|
|
}
|
|
return match;
|
|
}
|
|
|
|
NMMatchSpecMatchType
|
|
nm_match_spec_interface_name (const GSList *specs, const char *interface_name)
|
|
{
|
|
const GSList *iter;
|
|
NMMatchSpecMatchType match = NM_MATCH_SPEC_NO_MATCH;
|
|
|
|
g_return_val_if_fail (interface_name != NULL, NM_MATCH_SPEC_NO_MATCH);
|
|
|
|
for (iter = specs; iter; iter = g_slist_next (iter)) {
|
|
const char *spec_str = iter->data;
|
|
gboolean use_pattern = FALSE;
|
|
gboolean except;
|
|
|
|
if (!spec_str || !*spec_str)
|
|
continue;
|
|
|
|
spec_str = _match_except (spec_str, &except);
|
|
|
|
if ( !g_ascii_strncasecmp (spec_str, MAC_TAG, NM_STRLEN (MAC_TAG))
|
|
|| !g_ascii_strncasecmp (spec_str, SUBCHAN_TAG, NM_STRLEN (SUBCHAN_TAG))
|
|
|| !g_ascii_strncasecmp (spec_str, DEVICE_TYPE_TAG, NM_STRLEN (DEVICE_TYPE_TAG)))
|
|
continue;
|
|
|
|
if (!g_ascii_strncasecmp (spec_str, INTERFACE_NAME_TAG, NM_STRLEN (INTERFACE_NAME_TAG))) {
|
|
spec_str += NM_STRLEN (INTERFACE_NAME_TAG);
|
|
if (spec_str[0] == '=')
|
|
spec_str += 1;
|
|
else {
|
|
if (spec_str[0] == '~')
|
|
spec_str += 1;
|
|
use_pattern=TRUE;
|
|
}
|
|
} else if (except)
|
|
continue;
|
|
|
|
if ( !strcmp (spec_str, interface_name)
|
|
|| (use_pattern && g_pattern_match_simple (spec_str, interface_name))) {
|
|
if (except)
|
|
return NM_MATCH_SPEC_NEG_MATCH;
|
|
match = NM_MATCH_SPEC_MATCH;
|
|
}
|
|
}
|
|
return match;
|
|
}
|
|
|
|
#define BUFSIZE 10
|
|
|
|
static gboolean
|
|
parse_subchannels (const char *subchannels, guint32 *a, guint32 *b, guint32 *c)
|
|
{
|
|
long unsigned int tmp;
|
|
char buf[BUFSIZE + 1];
|
|
const char *p = subchannels;
|
|
int i = 0;
|
|
char *pa = NULL, *pb = NULL, *pc = NULL;
|
|
|
|
g_return_val_if_fail (subchannels != NULL, FALSE);
|
|
g_return_val_if_fail (a != NULL, FALSE);
|
|
g_return_val_if_fail (*a == 0, FALSE);
|
|
g_return_val_if_fail (b != NULL, FALSE);
|
|
g_return_val_if_fail (*b == 0, FALSE);
|
|
g_return_val_if_fail (c != NULL, FALSE);
|
|
g_return_val_if_fail (*c == 0, FALSE);
|
|
|
|
/* sanity check */
|
|
if (!g_ascii_isxdigit (subchannels[0]))
|
|
return FALSE;
|
|
|
|
/* Get the first channel */
|
|
while (*p && (*p != ',')) {
|
|
if (!g_ascii_isxdigit (*p) && (*p != '.'))
|
|
return FALSE; /* Invalid chars */
|
|
if (i >= BUFSIZE)
|
|
return FALSE; /* Too long to be a subchannel */
|
|
buf[i++] = *p++;
|
|
}
|
|
buf[i] = '\0';
|
|
|
|
/* and grab each of its elements, there should be 3 */
|
|
pa = &buf[0];
|
|
pb = strchr (buf, '.');
|
|
if (pb)
|
|
pc = strchr (pb + 1, '.');
|
|
if (!pa || !pb || !pc)
|
|
return FALSE;
|
|
|
|
/* Split the string */
|
|
*pb++ = '\0';
|
|
*pc++ = '\0';
|
|
|
|
errno = 0;
|
|
tmp = strtoul (pa, NULL, 16);
|
|
if (errno)
|
|
return FALSE;
|
|
*a = (guint32) tmp;
|
|
|
|
errno = 0;
|
|
tmp = strtoul (pb, NULL, 16);
|
|
if (errno)
|
|
return FALSE;
|
|
*b = (guint32) tmp;
|
|
|
|
errno = 0;
|
|
tmp = strtoul (pc, NULL, 16);
|
|
if (errno)
|
|
return FALSE;
|
|
*c = (guint32) tmp;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
NMMatchSpecMatchType
|
|
nm_match_spec_s390_subchannels (const GSList *specs, const char *subchannels)
|
|
{
|
|
const GSList *iter;
|
|
guint32 a = 0, b = 0, c = 0;
|
|
guint32 spec_a = 0, spec_b = 0, spec_c = 0;
|
|
NMMatchSpecMatchType match = NM_MATCH_SPEC_NO_MATCH;
|
|
|
|
g_return_val_if_fail (subchannels != NULL, NM_MATCH_SPEC_NO_MATCH);
|
|
|
|
if (!specs)
|
|
return NM_MATCH_SPEC_NO_MATCH;
|
|
|
|
if (!parse_subchannels (subchannels, &a, &b, &c))
|
|
return NM_MATCH_SPEC_NO_MATCH;
|
|
|
|
for (iter = specs; iter; iter = g_slist_next (iter)) {
|
|
const char *spec_str = iter->data;
|
|
gboolean except;
|
|
|
|
if (!spec_str || !*spec_str)
|
|
continue;
|
|
|
|
spec_str = _match_except (spec_str, &except);
|
|
|
|
if (!g_ascii_strncasecmp (spec_str, SUBCHAN_TAG, NM_STRLEN (SUBCHAN_TAG))) {
|
|
spec_str += NM_STRLEN (SUBCHAN_TAG);
|
|
if (parse_subchannels (spec_str, &spec_a, &spec_b, &spec_c)) {
|
|
if (a == spec_a && b == spec_b && c == spec_c) {
|
|
if (except)
|
|
return NM_MATCH_SPEC_NEG_MATCH;
|
|
match = NM_MATCH_SPEC_MATCH;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return match;
|
|
}
|
|
|
|
static gboolean
|
|
_match_config_nm_version (const char *str, const char *tag, guint cur_nm_version)
|
|
{
|
|
gs_free char *s_ver = NULL;
|
|
gs_strfreev char **s_ver_tokens = NULL;
|
|
gint v_maj = -1, v_min = -1, v_mic = -1;
|
|
guint c_maj = -1, c_min = -1, c_mic = -1;
|
|
guint n_tokens;
|
|
|
|
s_ver = g_strdup (str);
|
|
g_strstrip (s_ver);
|
|
|
|
/* Let's be strict with the accepted format here. No funny stuff!! */
|
|
|
|
if (s_ver[strspn (s_ver, ".0123456789")] != '\0')
|
|
return FALSE;
|
|
|
|
s_ver_tokens = g_strsplit (s_ver, ".", -1);
|
|
n_tokens = g_strv_length (s_ver_tokens);
|
|
if (n_tokens == 0 || n_tokens > 3)
|
|
return FALSE;
|
|
|
|
v_maj = _nm_utils_ascii_str_to_int64 (s_ver_tokens[0], 10, 0, 0xFFFF, -1);
|
|
if (v_maj < 0)
|
|
return FALSE;
|
|
if (n_tokens >= 2) {
|
|
v_min = _nm_utils_ascii_str_to_int64 (s_ver_tokens[1], 10, 0, 0xFF, -1);
|
|
if (v_min < 0)
|
|
return FALSE;
|
|
}
|
|
if (n_tokens >= 3) {
|
|
v_mic = _nm_utils_ascii_str_to_int64 (s_ver_tokens[2], 10, 0, 0xFF, -1);
|
|
if (v_mic < 0)
|
|
return FALSE;
|
|
}
|
|
|
|
nm_decode_version (cur_nm_version, &c_maj, &c_min, &c_mic);
|
|
|
|
#define CHECK_AND_RETURN_FALSE(cur, val, tag, is_last_digit) \
|
|
G_STMT_START { \
|
|
if (!strcmp (tag, MATCH_TAG_CONFIG_NM_VERSION_MIN)) { \
|
|
if (cur < val) \
|
|
return FALSE; \
|
|
} else if (!strcmp (tag, MATCH_TAG_CONFIG_NM_VERSION_MAX)) { \
|
|
if (cur > val) \
|
|
return FALSE; \
|
|
} else { \
|
|
if (cur != val) \
|
|
return FALSE; \
|
|
} \
|
|
if (!(is_last_digit)) { \
|
|
if (cur != val) \
|
|
return FALSE; \
|
|
} \
|
|
} G_STMT_END
|
|
if (v_mic >= 0)
|
|
CHECK_AND_RETURN_FALSE (c_mic, v_mic, tag, TRUE);
|
|
if (v_min >= 0)
|
|
CHECK_AND_RETURN_FALSE (c_min, v_min, tag, v_mic < 0);
|
|
CHECK_AND_RETURN_FALSE (c_maj, v_maj, tag, v_min < 0);
|
|
return TRUE;
|
|
}
|
|
|
|
NMMatchSpecMatchType
|
|
nm_match_spec_match_config (const GSList *specs, guint cur_nm_version, const char *env)
|
|
{
|
|
const GSList *iter;
|
|
NMMatchSpecMatchType match = NM_MATCH_SPEC_NO_MATCH;
|
|
|
|
if (!specs)
|
|
return NM_MATCH_SPEC_NO_MATCH;
|
|
|
|
for (iter = specs; iter; iter = g_slist_next (iter)) {
|
|
const char *spec_str = iter->data;
|
|
gboolean except;
|
|
gboolean v_match;
|
|
|
|
if (!spec_str || !*spec_str)
|
|
continue;
|
|
|
|
spec_str = _match_except (spec_str, &except);
|
|
|
|
if (_spec_has_prefix (&spec_str, MATCH_TAG_CONFIG_NM_VERSION))
|
|
v_match = _match_config_nm_version (spec_str, MATCH_TAG_CONFIG_NM_VERSION, cur_nm_version);
|
|
else if (_spec_has_prefix (&spec_str, MATCH_TAG_CONFIG_NM_VERSION_MIN))
|
|
v_match = _match_config_nm_version (spec_str, MATCH_TAG_CONFIG_NM_VERSION_MIN, cur_nm_version);
|
|
else if (_spec_has_prefix (&spec_str, MATCH_TAG_CONFIG_NM_VERSION_MAX))
|
|
v_match = _match_config_nm_version (spec_str, MATCH_TAG_CONFIG_NM_VERSION_MAX, cur_nm_version);
|
|
else if (_spec_has_prefix (&spec_str, MATCH_TAG_CONFIG_ENV))
|
|
v_match = env && env[0] && !strcmp (spec_str, env);
|
|
else
|
|
continue;
|
|
|
|
if (v_match) {
|
|
if (except)
|
|
return NM_MATCH_SPEC_NEG_MATCH;
|
|
match = NM_MATCH_SPEC_MATCH;
|
|
}
|
|
}
|
|
return match;
|
|
}
|
|
|
|
/**
|
|
* nm_match_spec_split:
|
|
* @value: the string of device specs
|
|
*
|
|
* Splits the specs from the string and returns them as individual
|
|
* entires in a #GSList.
|
|
*
|
|
* It does not validate any specs, it basically just does a special
|
|
* strsplit with ',' or ';' as separators and supporting '\\' as
|
|
* escape character.
|
|
*
|
|
* Leading and trailing spaces of each entry are removed. But the user
|
|
* can preserve them by specifying "\\s has 2 leading" or "has 2 trailing \\s".
|
|
*
|
|
* Specs can have a qualifier like "interface-name:". We still don't strip
|
|
* any whitespace after the colon, so "interface-name: X" matches an interface
|
|
* named " X".
|
|
*
|
|
* Returns: (transfer full): the list of device specs.
|
|
*/
|
|
GSList *
|
|
nm_match_spec_split (const char *value)
|
|
{
|
|
char *string_value, *p, *q0, *q;
|
|
GSList *pieces = NULL;
|
|
int trailing_ws;
|
|
|
|
if (!value || !*value)
|
|
return NULL;
|
|
|
|
/* Copied from glibs g_key_file_parse_value_as_string() function
|
|
* and adjusted. */
|
|
|
|
string_value = g_new (gchar, strlen (value) + 1);
|
|
|
|
p = (gchar *) value;
|
|
|
|
/* skip over leading whitespace */
|
|
while (g_ascii_isspace (*p))
|
|
p++;
|
|
|
|
q0 = q = string_value;
|
|
trailing_ws = 0;
|
|
while (*p) {
|
|
if (*p == '\\') {
|
|
p++;
|
|
|
|
switch (*p) {
|
|
case 's':
|
|
*q = ' ';
|
|
break;
|
|
case 'n':
|
|
*q = '\n';
|
|
break;
|
|
case 't':
|
|
*q = '\t';
|
|
break;
|
|
case 'r':
|
|
*q = '\r';
|
|
break;
|
|
case '\\':
|
|
*q = '\\';
|
|
break;
|
|
case '\0':
|
|
break;
|
|
default:
|
|
if (NM_IN_SET (*p, ',', ';'))
|
|
*q = *p;
|
|
else {
|
|
*q++ = '\\';
|
|
*q = *p;
|
|
}
|
|
break;
|
|
}
|
|
if (*p == '\0')
|
|
break;
|
|
p++;
|
|
trailing_ws = 0;
|
|
} else {
|
|
*q = *p;
|
|
if (*p == '\0')
|
|
break;
|
|
if (g_ascii_isspace (*p)) {
|
|
trailing_ws++;
|
|
p++;
|
|
} else if (NM_IN_SET (*p, ',', ';')) {
|
|
if (q0 < q - trailing_ws)
|
|
pieces = g_slist_prepend (pieces, g_strndup (q0, (q - q0) - trailing_ws));
|
|
q0 = q + 1;
|
|
p++;
|
|
trailing_ws = 0;
|
|
while (g_ascii_isspace (*p))
|
|
p++;
|
|
} else
|
|
p++;
|
|
}
|
|
q++;
|
|
}
|
|
|
|
*q = '\0';
|
|
if (q0 < q - trailing_ws)
|
|
pieces = g_slist_prepend (pieces, g_strndup (q0, (q - q0) - trailing_ws));
|
|
g_free (string_value);
|
|
return g_slist_reverse (pieces);
|
|
}
|
|
|
|
/**
|
|
* nm_match_spec_join:
|
|
* @specs: the device specs to join
|
|
*
|
|
* This is based on g_key_file_parse_string_as_value(), analog to
|
|
* nm_match_spec_split() which is based on g_key_file_parse_value_as_string().
|
|
*
|
|
* Returns: (transfer full): a joined list of device specs that can be
|
|
* split again with nm_match_spec_split(). Note that
|
|
* nm_match_spec_split (nm_match_spec_join (specs)) yields the original
|
|
* result (which is not true the other way around because there are multiple
|
|
* ways to encode the same joined specs string).
|
|
*/
|
|
char *
|
|
nm_match_spec_join (GSList *specs)
|
|
{
|
|
const char *p;
|
|
GString *str;
|
|
|
|
str = g_string_new ("");
|
|
|
|
for (; specs; specs = specs->next) {
|
|
p = specs->data;
|
|
|
|
if (!p || !*p)
|
|
continue;
|
|
|
|
if (str->len > 0)
|
|
g_string_append_c (str, ',');
|
|
|
|
/* escape leading whitespace */
|
|
switch (*p) {
|
|
case ' ':
|
|
g_string_append (str, "\\s");
|
|
p++;
|
|
break;
|
|
case '\t':
|
|
g_string_append (str, "\\t");
|
|
p++;
|
|
break;
|
|
}
|
|
|
|
for (; *p; p++) {
|
|
switch (*p) {
|
|
case '\n':
|
|
g_string_append (str, "\\n");
|
|
break;
|
|
case '\r':
|
|
g_string_append (str, "\\r");
|
|
break;
|
|
case '\\':
|
|
g_string_append (str, "\\\\");
|
|
break;
|
|
case ',':
|
|
g_string_append (str, "\\,");
|
|
break;
|
|
case ';':
|
|
g_string_append (str, "\\;");
|
|
break;
|
|
default:
|
|
g_string_append_c (str, *p);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* escape trailing whitespaces */
|
|
switch (str->str[str->len - 1]) {
|
|
case ' ':
|
|
g_string_overwrite (str, str->len - 1, "\\s");
|
|
break;
|
|
case '\t':
|
|
g_string_overwrite (str, str->len - 1, "\\t");
|
|
break;
|
|
}
|
|
}
|
|
|
|
return g_string_free (str, FALSE);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
char _nm_utils_to_string_buffer[];
|
|
|
|
void
|
|
nm_utils_to_string_buffer_init (char **buf, gsize *len)
|
|
{
|
|
if (!*buf) {
|
|
*buf = _nm_utils_to_string_buffer;
|
|
*len = sizeof (_nm_utils_to_string_buffer);
|
|
}
|
|
}
|
|
|
|
gboolean
|
|
nm_utils_to_string_buffer_init_null (gconstpointer obj, char **buf, gsize *len)
|
|
{
|
|
nm_utils_to_string_buffer_init (buf, len);
|
|
if (!obj) {
|
|
g_strlcpy (*buf, "(null)", *len);
|
|
return FALSE;
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
void
|
|
nm_utils_strbuf_append_c (char **buf, gsize *len, char c)
|
|
{
|
|
switch (*len) {
|
|
case 0:
|
|
return;
|
|
case 1:
|
|
(*buf)[0] = '\0';
|
|
*len = 0;
|
|
(*buf)++;
|
|
return;
|
|
default:
|
|
(*buf)[0] = c;
|
|
(*buf)[1] = '\0';
|
|
(*len)--;
|
|
(*buf)++;
|
|
return;
|
|
}
|
|
}
|
|
|
|
void
|
|
nm_utils_strbuf_append_str (char **buf, gsize *len, const char *str)
|
|
{
|
|
gsize src_len;
|
|
|
|
switch (*len) {
|
|
case 0:
|
|
return;
|
|
case 1:
|
|
if (!str || !*str) {
|
|
(*buf)[0] = '\0';
|
|
return;
|
|
}
|
|
(*buf)[0] = '\0';
|
|
*len = 0;
|
|
(*buf)++;
|
|
return;
|
|
default:
|
|
if (!str || !*str) {
|
|
(*buf)[0] = '\0';
|
|
return;
|
|
}
|
|
src_len = g_strlcpy (*buf, str, *len);
|
|
if (src_len >= *len) {
|
|
*buf = &(*buf)[*len];
|
|
*len = 0;
|
|
} else {
|
|
*buf = &(*buf)[src_len];
|
|
*len -= src_len;
|
|
}
|
|
return;
|
|
}
|
|
}
|
|
|
|
void
|
|
nm_utils_strbuf_append (char **buf, gsize *len, const char *format, ...)
|
|
{
|
|
char *p = *buf;
|
|
va_list args;
|
|
gint retval;
|
|
|
|
if (*len == 0)
|
|
return;
|
|
|
|
va_start (args, format);
|
|
retval = g_vsnprintf (p, *len, format, args);
|
|
va_end (args);
|
|
|
|
if (retval >= *len) {
|
|
*buf = &p[*len];
|
|
*len = 0;
|
|
} else {
|
|
*buf = &p[retval];
|
|
*len -= retval;
|
|
}
|
|
}
|
|
|
|
const char *
|
|
nm_utils_flags2str (const NMUtilsFlags2StrDesc *descs,
|
|
gsize n_descs,
|
|
unsigned flags,
|
|
char *buf,
|
|
gsize len)
|
|
{
|
|
gsize i;
|
|
char *p;
|
|
|
|
#if NM_MORE_ASSERTS > 10
|
|
nm_assert (descs);
|
|
nm_assert (n_descs > 0);
|
|
for (i = 0; i < n_descs; i++) {
|
|
gsize j;
|
|
|
|
nm_assert (descs[i].flag && nm_utils_is_power_of_two (descs[i].flag));
|
|
nm_assert (descs[i].name && descs[i].name[0]);
|
|
for (j = 0; j < i; j++)
|
|
nm_assert (descs[j].flag != descs[i].flag);
|
|
}
|
|
#endif
|
|
|
|
nm_utils_to_string_buffer_init (&buf, &len);
|
|
|
|
if (!len)
|
|
return buf;
|
|
|
|
buf[0] = '\0';
|
|
if (!flags) {
|
|
return buf;
|
|
}
|
|
|
|
p = buf;
|
|
for (i = 0; flags && i < n_descs; i++) {
|
|
if (NM_FLAGS_HAS (flags, descs[i].flag)) {
|
|
flags &= ~descs[i].flag;
|
|
|
|
if (buf[0] != '\0')
|
|
nm_utils_strbuf_append_c (&p, &len, ',');
|
|
nm_utils_strbuf_append_str (&p, &len, descs[i].name);
|
|
}
|
|
}
|
|
if (flags) {
|
|
if (buf[0] != '\0')
|
|
nm_utils_strbuf_append_c (&p, &len, ',');
|
|
nm_utils_strbuf_append (&p, &len, "0x%x", flags);
|
|
}
|
|
return buf;
|
|
};
|
|
|
|
/*****************************************************************************/
|
|
|
|
char *
|
|
nm_utils_new_vlan_name (const char *parent_iface, guint32 vlan_id)
|
|
{
|
|
guint id_len;
|
|
gsize parent_len;
|
|
char *ifname;
|
|
|
|
g_return_val_if_fail (parent_iface && *parent_iface, NULL);
|
|
|
|
if (vlan_id < 10)
|
|
id_len = 2;
|
|
else if (vlan_id < 100)
|
|
id_len = 3;
|
|
else if (vlan_id < 1000)
|
|
id_len = 4;
|
|
else {
|
|
g_return_val_if_fail (vlan_id < 4095, NULL);
|
|
id_len = 5;
|
|
}
|
|
|
|
ifname = g_new (char, IFNAMSIZ);
|
|
|
|
parent_len = strlen (parent_iface);
|
|
parent_len = MIN (parent_len, IFNAMSIZ - 1 - id_len);
|
|
memcpy (ifname, parent_iface, parent_len);
|
|
g_snprintf (&ifname[parent_len], IFNAMSIZ - parent_len, ".%u", vlan_id);
|
|
|
|
return ifname;
|
|
}
|
|
|
|
/**
|
|
* nm_utils_read_resolv_conf_nameservers():
|
|
* @rc_contents: contents of a resolv.conf; or %NULL to read /etc/resolv.conf
|
|
*
|
|
* Reads all nameservers out of @rc_contents or /etc/resolv.conf and returns
|
|
* them.
|
|
*
|
|
* Returns: a #GPtrArray of 'char *' elements of each nameserver line from
|
|
* @contents or resolv.conf
|
|
*/
|
|
GPtrArray *
|
|
nm_utils_read_resolv_conf_nameservers (const char *rc_contents)
|
|
{
|
|
GPtrArray *nameservers = NULL;
|
|
char *contents = NULL;
|
|
char **lines, **iter;
|
|
char *p;
|
|
|
|
if (rc_contents)
|
|
contents = g_strdup (rc_contents);
|
|
else {
|
|
if (!g_file_get_contents (_PATH_RESCONF, &contents, NULL, NULL))
|
|
return NULL;
|
|
}
|
|
|
|
nameservers = g_ptr_array_new_full (3, g_free);
|
|
|
|
lines = g_strsplit_set (contents, "\r\n", -1);
|
|
for (iter = lines; *iter; iter++) {
|
|
if (!g_str_has_prefix (*iter, "nameserver"))
|
|
continue;
|
|
p = *iter + strlen ("nameserver");
|
|
if (!g_ascii_isspace (*p++))
|
|
continue;
|
|
/* Skip intermediate whitespace */
|
|
while (g_ascii_isspace (*p))
|
|
p++;
|
|
g_strchomp (p);
|
|
|
|
g_ptr_array_add (nameservers, g_strdup (p));
|
|
}
|
|
g_strfreev (lines);
|
|
g_free (contents);
|
|
|
|
return nameservers;
|
|
}
|
|
|
|
/**
|
|
* nm_utils_read_resolv_conf_dns_options():
|
|
* @rc_contents: contents of a resolv.conf; or %NULL to read /etc/resolv.conf
|
|
*
|
|
* Reads all dns options out of @rc_contents or /etc/resolv.conf and returns
|
|
* them.
|
|
*
|
|
* Returns: a #GPtrArray of 'char *' elements of each option
|
|
*/
|
|
GPtrArray *
|
|
nm_utils_read_resolv_conf_dns_options (const char *rc_contents)
|
|
{
|
|
GPtrArray *options = NULL;
|
|
char *contents = NULL;
|
|
char **lines, **line_iter;
|
|
char **tokens, **token_iter;
|
|
char *p;
|
|
|
|
if (rc_contents)
|
|
contents = g_strdup (rc_contents);
|
|
else {
|
|
if (!g_file_get_contents (_PATH_RESCONF, &contents, NULL, NULL))
|
|
return NULL;
|
|
}
|
|
|
|
options = g_ptr_array_new_full (3, g_free);
|
|
|
|
lines = g_strsplit_set (contents, "\r\n", -1);
|
|
for (line_iter = lines; *line_iter; line_iter++) {
|
|
if (!g_str_has_prefix (*line_iter, "options"))
|
|
continue;
|
|
p = *line_iter + strlen ("options");
|
|
if (!g_ascii_isspace (*p++))
|
|
continue;
|
|
|
|
tokens = g_strsplit (p, " ", 0);
|
|
for (token_iter = tokens; token_iter && *token_iter; token_iter++) {
|
|
g_strstrip (*token_iter);
|
|
if (!*token_iter[0])
|
|
continue;
|
|
g_ptr_array_add (options, g_strdup (*token_iter));
|
|
}
|
|
g_strfreev (tokens);
|
|
}
|
|
g_strfreev (lines);
|
|
g_free (contents);
|
|
|
|
return options;
|
|
}
|
|
|
|
int
|
|
nm_utils_cmp_connection_by_autoconnect_priority (NMConnection **a, NMConnection **b)
|
|
{
|
|
NMSettingConnection *a_s_con, *b_s_con;
|
|
gboolean a_ac, b_ac;
|
|
gint a_ap, b_ap;
|
|
|
|
a_s_con = nm_connection_get_setting_connection (*a);
|
|
b_s_con = nm_connection_get_setting_connection (*b);
|
|
|
|
a_ac = !!nm_setting_connection_get_autoconnect (a_s_con);
|
|
b_ac = !!nm_setting_connection_get_autoconnect (b_s_con);
|
|
if (a_ac != b_ac)
|
|
return ((int) b_ac) - ((int) a_ac);
|
|
if (!a_ac)
|
|
return 0;
|
|
|
|
a_ap = nm_setting_connection_get_autoconnect_priority (a_s_con);
|
|
b_ap = nm_setting_connection_get_autoconnect_priority (b_s_con);
|
|
if (a_ap != b_ap)
|
|
return (a_ap > b_ap) ? -1 : 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**************************************************************************/
|
|
|
|
static gint64 monotonic_timestamp_offset_sec;
|
|
static int monotonic_timestamp_clock_mode = 0;
|
|
|
|
static void
|
|
monotonic_timestamp_get (struct timespec *tp)
|
|
{
|
|
int clock_mode = 0;
|
|
int err = 0;
|
|
|
|
switch (monotonic_timestamp_clock_mode) {
|
|
case 0:
|
|
/* the clock is not yet initialized (first run) */
|
|
err = clock_gettime (CLOCK_BOOTTIME, tp);
|
|
if (err == -1 && errno == EINVAL) {
|
|
clock_mode = 2;
|
|
err = clock_gettime (CLOCK_MONOTONIC, tp);
|
|
} else
|
|
clock_mode = 1;
|
|
break;
|
|
case 1:
|
|
/* default, return CLOCK_BOOTTIME */
|
|
err = clock_gettime (CLOCK_BOOTTIME, tp);
|
|
break;
|
|
case 2:
|
|
/* fallback, return CLOCK_MONOTONIC. Kernels prior to 2.6.39
|
|
* don't support CLOCK_BOOTTIME. */
|
|
err = clock_gettime (CLOCK_MONOTONIC, tp);
|
|
break;
|
|
}
|
|
|
|
g_assert (err == 0); (void)err;
|
|
g_assert (tp->tv_nsec >= 0 && tp->tv_nsec < NM_UTILS_NS_PER_SECOND);
|
|
|
|
if (G_LIKELY (clock_mode == 0))
|
|
return;
|
|
|
|
/* Calculate an offset for the time stamp.
|
|
*
|
|
* We always want positive values, because then we can initialize
|
|
* a timestamp with 0 and be sure, that it will be less then any
|
|
* value nm_utils_get_monotonic_timestamp_*() might return.
|
|
* For this to be true also for nm_utils_get_monotonic_timestamp_s() at
|
|
* early boot, we have to shift the timestamp to start counting at
|
|
* least from 1 second onward.
|
|
*
|
|
* Another advantage of shifting is, that this way we make use of the whole 31 bit
|
|
* range of signed int, before the time stamp for nm_utils_get_monotonic_timestamp_s()
|
|
* wraps (~68 years).
|
|
**/
|
|
monotonic_timestamp_offset_sec = (- ((gint64) tp->tv_sec)) + 1;
|
|
monotonic_timestamp_clock_mode = clock_mode;
|
|
|
|
if (nm_logging_enabled (LOGL_DEBUG, LOGD_CORE)) {
|
|
time_t now = time (NULL);
|
|
struct tm tm;
|
|
char s[255];
|
|
|
|
strftime (s, sizeof (s), "%Y-%m-%d %H:%M:%S", localtime_r (&now, &tm));
|
|
nm_log_dbg (LOGD_CORE, "monotonic timestamp started counting 1.%09ld seconds ago with "
|
|
"an offset of %lld.0 seconds to %s (local time is %s)",
|
|
tp->tv_nsec, (long long) -monotonic_timestamp_offset_sec,
|
|
clock_mode == 1 ? "CLOCK_BOOTTIME" : "CLOCK_MONOTONIC", s);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* nm_utils_get_monotonic_timestamp_ns:
|
|
*
|
|
* Returns: a monotonically increasing time stamp in nanoseconds,
|
|
* starting at an unspecified offset. See clock_gettime(), %CLOCK_BOOTTIME.
|
|
*
|
|
* The returned value will start counting at an undefined point
|
|
* in the past and will always be positive.
|
|
*
|
|
* All the nm_utils_get_monotonic_timestamp_*s functions return the same
|
|
* timestamp but in different scales (nsec, usec, msec, sec).
|
|
**/
|
|
gint64
|
|
nm_utils_get_monotonic_timestamp_ns (void)
|
|
{
|
|
struct timespec tp = { 0 };
|
|
|
|
monotonic_timestamp_get (&tp);
|
|
|
|
/* Although the result will always be positive, we return a signed
|
|
* integer, which makes it easier to calculate time differences (when
|
|
* you want to subtract signed values).
|
|
**/
|
|
return (((gint64) tp.tv_sec) + monotonic_timestamp_offset_sec) * NM_UTILS_NS_PER_SECOND +
|
|
tp.tv_nsec;
|
|
}
|
|
|
|
/**
|
|
* nm_utils_get_monotonic_timestamp_us:
|
|
*
|
|
* Returns: a monotonically increasing time stamp in microseconds,
|
|
* starting at an unspecified offset. See clock_gettime(), %CLOCK_BOOTTIME.
|
|
*
|
|
* The returned value will start counting at an undefined point
|
|
* in the past and will always be positive.
|
|
*
|
|
* All the nm_utils_get_monotonic_timestamp_*s functions return the same
|
|
* timestamp but in different scales (nsec, usec, msec, sec).
|
|
**/
|
|
gint64
|
|
nm_utils_get_monotonic_timestamp_us (void)
|
|
{
|
|
struct timespec tp = { 0 };
|
|
|
|
monotonic_timestamp_get (&tp);
|
|
|
|
/* Although the result will always be positive, we return a signed
|
|
* integer, which makes it easier to calculate time differences (when
|
|
* you want to subtract signed values).
|
|
**/
|
|
return (((gint64) tp.tv_sec) + monotonic_timestamp_offset_sec) * ((gint64) G_USEC_PER_SEC) +
|
|
(tp.tv_nsec / (NM_UTILS_NS_PER_SECOND/G_USEC_PER_SEC));
|
|
}
|
|
|
|
/**
|
|
* nm_utils_get_monotonic_timestamp_ms:
|
|
*
|
|
* Returns: a monotonically increasing time stamp in milliseconds,
|
|
* starting at an unspecified offset. See clock_gettime(), %CLOCK_BOOTTIME.
|
|
*
|
|
* The returned value will start counting at an undefined point
|
|
* in the past and will always be positive.
|
|
*
|
|
* All the nm_utils_get_monotonic_timestamp_*s functions return the same
|
|
* timestamp but in different scales (nsec, usec, msec, sec).
|
|
**/
|
|
gint64
|
|
nm_utils_get_monotonic_timestamp_ms (void)
|
|
{
|
|
struct timespec tp = { 0 };
|
|
|
|
monotonic_timestamp_get (&tp);
|
|
|
|
/* Although the result will always be positive, we return a signed
|
|
* integer, which makes it easier to calculate time differences (when
|
|
* you want to subtract signed values).
|
|
**/
|
|
return (((gint64) tp.tv_sec) + monotonic_timestamp_offset_sec) * ((gint64) 1000) +
|
|
(tp.tv_nsec / (NM_UTILS_NS_PER_SECOND/1000));
|
|
}
|
|
|
|
/**
|
|
* nm_utils_get_monotonic_timestamp_s:
|
|
*
|
|
* Returns: nm_utils_get_monotonic_timestamp_ms() in seconds (throwing
|
|
* away sub second parts). The returned value will always be positive.
|
|
*
|
|
* This value wraps after roughly 68 years which should be fine for any
|
|
* practical purpose.
|
|
*
|
|
* All the nm_utils_get_monotonic_timestamp_*s functions return the same
|
|
* timestamp but in different scales (nsec, usec, msec, sec).
|
|
**/
|
|
gint32
|
|
nm_utils_get_monotonic_timestamp_s (void)
|
|
{
|
|
struct timespec tp = { 0 };
|
|
|
|
monotonic_timestamp_get (&tp);
|
|
return (((gint64) tp.tv_sec) + monotonic_timestamp_offset_sec);
|
|
}
|
|
|
|
typedef struct
|
|
{
|
|
const char *name;
|
|
NMSetting *setting;
|
|
NMSetting *diff_base_setting;
|
|
GHashTable *setting_diff;
|
|
} LogConnectionSettingData;
|
|
|
|
typedef struct
|
|
{
|
|
const char *item_name;
|
|
NMSettingDiffResult diff_result;
|
|
} LogConnectionSettingItem;
|
|
|
|
static gint
|
|
_log_connection_sort_hashes_fcn (gconstpointer a, gconstpointer b)
|
|
{
|
|
const LogConnectionSettingData *v1 = a;
|
|
const LogConnectionSettingData *v2 = b;
|
|
guint32 p1, p2;
|
|
NMSetting *s1, *s2;
|
|
|
|
s1 = v1->setting ? v1->setting : v1->diff_base_setting;
|
|
s2 = v2->setting ? v2->setting : v2->diff_base_setting;
|
|
|
|
g_assert (s1 && s2);
|
|
|
|
p1 = _nm_setting_get_setting_priority (s1);
|
|
p2 = _nm_setting_get_setting_priority (s2);
|
|
|
|
if (p1 != p2)
|
|
return p1 > p2 ? 1 : -1;
|
|
|
|
return strcmp (v1->name, v2->name);
|
|
}
|
|
|
|
static GArray *
|
|
_log_connection_sort_hashes (NMConnection *connection, NMConnection *diff_base, GHashTable *connection_diff)
|
|
{
|
|
GHashTableIter iter;
|
|
GArray *sorted_hashes;
|
|
LogConnectionSettingData setting_data;
|
|
|
|
sorted_hashes = g_array_sized_new (TRUE, FALSE, sizeof (LogConnectionSettingData), g_hash_table_size (connection_diff));
|
|
|
|
g_hash_table_iter_init (&iter, connection_diff);
|
|
while (g_hash_table_iter_next (&iter, (gpointer) &setting_data.name, (gpointer) &setting_data.setting_diff)) {
|
|
setting_data.setting = nm_connection_get_setting_by_name (connection, setting_data.name);
|
|
setting_data.diff_base_setting = diff_base ? nm_connection_get_setting_by_name (diff_base, setting_data.name) : NULL;
|
|
g_assert (setting_data.setting || setting_data.diff_base_setting);
|
|
g_array_append_val (sorted_hashes, setting_data);
|
|
}
|
|
|
|
g_array_sort (sorted_hashes, _log_connection_sort_hashes_fcn);
|
|
return sorted_hashes;
|
|
}
|
|
|
|
static gint
|
|
_log_connection_sort_names_fcn (gconstpointer a, gconstpointer b)
|
|
{
|
|
const LogConnectionSettingItem *v1 = a;
|
|
const LogConnectionSettingItem *v2 = b;
|
|
|
|
/* we want to first show the items, that disappeared, then the one that changed and
|
|
* then the ones that were added. */
|
|
|
|
if ((v1->diff_result & NM_SETTING_DIFF_RESULT_IN_A) != (v2->diff_result & NM_SETTING_DIFF_RESULT_IN_A))
|
|
return (v1->diff_result & NM_SETTING_DIFF_RESULT_IN_A) ? -1 : 1;
|
|
if ((v1->diff_result & NM_SETTING_DIFF_RESULT_IN_B) != (v2->diff_result & NM_SETTING_DIFF_RESULT_IN_B))
|
|
return (v1->diff_result & NM_SETTING_DIFF_RESULT_IN_B) ? 1 : -1;
|
|
return strcmp (v1->item_name, v2->item_name);
|
|
}
|
|
|
|
static char *
|
|
_log_connection_get_property (NMSetting *setting, const char *name)
|
|
{
|
|
GValue val = G_VALUE_INIT;
|
|
char *s;
|
|
|
|
g_return_val_if_fail (setting, NULL);
|
|
|
|
if ( !NM_IS_SETTING_VPN (setting)
|
|
&& nm_setting_get_secret_flags (setting, name, NULL, NULL))
|
|
return g_strdup ("****");
|
|
|
|
if (!_nm_setting_get_property (setting, name, &val))
|
|
g_return_val_if_reached (FALSE);
|
|
|
|
if (G_VALUE_HOLDS_STRING (&val)) {
|
|
const char *val_s;
|
|
|
|
val_s = g_value_get_string (&val);
|
|
if (!val_s) {
|
|
/* for NULL, we want to return the unquoted string "NULL". */
|
|
s = g_strdup ("NULL");
|
|
} else {
|
|
char *escaped = g_strescape (val_s, "'");
|
|
|
|
s = g_strdup_printf ("'%s'", escaped);
|
|
g_free (escaped);
|
|
}
|
|
} else {
|
|
s = g_strdup_value_contents (&val);
|
|
if (s == NULL)
|
|
s = g_strdup ("NULL");
|
|
else {
|
|
char *escaped = g_strescape (s, "'");
|
|
|
|
g_free (s);
|
|
s = escaped;
|
|
}
|
|
}
|
|
g_value_unset(&val);
|
|
return s;
|
|
}
|
|
|
|
static void
|
|
_log_connection_sort_names (LogConnectionSettingData *setting_data, GArray *sorted_names)
|
|
{
|
|
GHashTableIter iter;
|
|
LogConnectionSettingItem item;
|
|
gpointer p;
|
|
|
|
g_array_set_size (sorted_names, 0);
|
|
|
|
g_hash_table_iter_init (&iter, setting_data->setting_diff);
|
|
while (g_hash_table_iter_next (&iter, (gpointer) &item.item_name, &p)) {
|
|
item.diff_result = GPOINTER_TO_UINT (p);
|
|
g_array_append_val (sorted_names, item);
|
|
}
|
|
|
|
g_array_sort (sorted_names, _log_connection_sort_names_fcn);
|
|
}
|
|
|
|
void
|
|
nm_utils_log_connection_diff (NMConnection *connection, NMConnection *diff_base, guint32 level, guint64 domain, const char *name, const char *prefix)
|
|
{
|
|
GHashTable *connection_diff = NULL;
|
|
GArray *sorted_hashes;
|
|
GArray *sorted_names = NULL;
|
|
int i, j;
|
|
gboolean connection_diff_are_same;
|
|
gboolean print_header = TRUE;
|
|
gboolean print_setting_header;
|
|
GString *str1;
|
|
|
|
g_return_if_fail (NM_IS_CONNECTION (connection));
|
|
g_return_if_fail (!diff_base || (NM_IS_CONNECTION (diff_base) && diff_base != connection));
|
|
|
|
/* For VPN setting types, this is broken, because we cannot (generically) print the content of data/secrets. Bummer... */
|
|
|
|
if (!nm_logging_enabled (level, domain))
|
|
return;
|
|
|
|
if (!prefix)
|
|
prefix = "";
|
|
if (!name)
|
|
name = "";
|
|
|
|
connection_diff_are_same = nm_connection_diff (connection, diff_base, NM_SETTING_COMPARE_FLAG_EXACT | NM_SETTING_COMPARE_FLAG_DIFF_RESULT_NO_DEFAULT, &connection_diff);
|
|
if (connection_diff_are_same) {
|
|
if (diff_base)
|
|
nm_log (level, domain, "%sconnection '%s' (%p/%s and %p/%s): no difference", prefix, name, connection, G_OBJECT_TYPE_NAME (connection), diff_base, G_OBJECT_TYPE_NAME (diff_base));
|
|
else
|
|
nm_log (level, domain, "%sconnection '%s' (%p/%s): no properties set", prefix, name, connection, G_OBJECT_TYPE_NAME (connection));
|
|
g_assert (!connection_diff);
|
|
return;
|
|
}
|
|
|
|
/* FIXME: it doesn't nicely show the content of NMSettingVpn, becuase nm_connection_diff() does not
|
|
* expand the hash values. */
|
|
|
|
sorted_hashes = _log_connection_sort_hashes (connection, diff_base, connection_diff);
|
|
if (sorted_hashes->len <= 0)
|
|
goto out;
|
|
|
|
sorted_names = g_array_new (FALSE, FALSE, sizeof (LogConnectionSettingItem));
|
|
str1 = g_string_new (NULL);
|
|
|
|
for (i = 0; i < sorted_hashes->len; i++) {
|
|
LogConnectionSettingData *setting_data = &g_array_index (sorted_hashes, LogConnectionSettingData, i);
|
|
|
|
_log_connection_sort_names (setting_data, sorted_names);
|
|
print_setting_header = TRUE;
|
|
for (j = 0; j < sorted_names->len; j++) {
|
|
char *str_conn, *str_diff;
|
|
LogConnectionSettingItem *item = &g_array_index (sorted_names, LogConnectionSettingItem, j);
|
|
|
|
str_conn = (item->diff_result & NM_SETTING_DIFF_RESULT_IN_A)
|
|
? _log_connection_get_property (setting_data->setting, item->item_name)
|
|
: NULL;
|
|
str_diff = (item->diff_result & NM_SETTING_DIFF_RESULT_IN_B)
|
|
? _log_connection_get_property (setting_data->diff_base_setting, item->item_name)
|
|
: NULL;
|
|
|
|
if (print_header) {
|
|
GError *err_verify = NULL;
|
|
const char *path = nm_connection_get_path (connection);
|
|
|
|
if (diff_base) {
|
|
nm_log (level, domain, "%sconnection '%s' (%p/%s < %p/%s)%s%s%s:", prefix, name, connection, G_OBJECT_TYPE_NAME (connection), diff_base, G_OBJECT_TYPE_NAME (diff_base),
|
|
NM_PRINT_FMT_QUOTED (path, " [", path, "]", ""));
|
|
} else {
|
|
nm_log (level, domain, "%sconnection '%s' (%p/%s):%s%s%s", prefix, name, connection, G_OBJECT_TYPE_NAME (connection),
|
|
NM_PRINT_FMT_QUOTED (path, " [", path, "]", ""));
|
|
}
|
|
print_header = FALSE;
|
|
|
|
if (!nm_connection_verify (connection, &err_verify)) {
|
|
nm_log (level, domain, "%sconnection %p does not verify: %s", prefix, connection, err_verify->message);
|
|
g_clear_error (&err_verify);
|
|
}
|
|
}
|
|
#define _NM_LOG_ALIGN "-25"
|
|
if (print_setting_header) {
|
|
if (diff_base) {
|
|
if (setting_data->setting && setting_data->diff_base_setting)
|
|
g_string_printf (str1, "%p < %p", setting_data->setting, setting_data->diff_base_setting);
|
|
else if (setting_data->diff_base_setting)
|
|
g_string_printf (str1, "*missing* < %p", setting_data->diff_base_setting);
|
|
else
|
|
g_string_printf (str1, "%p < *missing*", setting_data->setting);
|
|
nm_log (level, domain, "%s%"_NM_LOG_ALIGN"s [ %s ]", prefix, setting_data->name, str1->str);
|
|
} else
|
|
nm_log (level, domain, "%s%"_NM_LOG_ALIGN"s [ %p ]", prefix, setting_data->name, setting_data->setting);
|
|
print_setting_header = FALSE;
|
|
}
|
|
g_string_printf (str1, "%s.%s", setting_data->name, item->item_name);
|
|
switch (item->diff_result & (NM_SETTING_DIFF_RESULT_IN_A | NM_SETTING_DIFF_RESULT_IN_B)) {
|
|
case NM_SETTING_DIFF_RESULT_IN_B:
|
|
nm_log (level, domain, "%s%"_NM_LOG_ALIGN"s < %s", prefix, str1->str, str_diff ? str_diff : "NULL");
|
|
break;
|
|
case NM_SETTING_DIFF_RESULT_IN_A:
|
|
nm_log (level, domain, "%s%"_NM_LOG_ALIGN"s = %s", prefix, str1->str, str_conn ? str_conn : "NULL");
|
|
break;
|
|
default:
|
|
nm_log (level, domain, "%s%"_NM_LOG_ALIGN"s = %s < %s", prefix, str1->str, str_conn ? str_conn : "NULL", str_diff ? str_diff : "NULL");
|
|
break;
|
|
#undef _NM_LOG_ALIGN
|
|
}
|
|
g_free (str_conn);
|
|
g_free (str_diff);
|
|
}
|
|
}
|
|
|
|
g_array_free (sorted_names, TRUE);
|
|
g_string_free (str1, TRUE);
|
|
out:
|
|
g_hash_table_destroy (connection_diff);
|
|
g_array_free (sorted_hashes, TRUE);
|
|
}
|
|
|
|
/**
|
|
* nm_utils_monotonic_timestamp_as_boottime:
|
|
* @timestamp: the monotonic-timestamp that should be converted into CLOCK_BOOTTIME.
|
|
* @timestamp_ns_per_tick: How many nano seconds make one unit of @timestamp? E.g. if
|
|
* @timestamp is in unit seconds, pass %NM_UTILS_NS_PER_SECOND; @timestamp in nano
|
|
* seconds, pass 1; @timestamp in milli seconds, pass %NM_UTILS_NS_PER_SECOND/1000; etc.
|
|
*
|
|
* Returns: the monotonic-timestamp as CLOCK_BOOTTIME, as returned by clock_gettime().
|
|
* The unit is the same as the passed in @timestamp basd on @timestamp_ns_per_tick.
|
|
* E.g. if you passed @timestamp in as seconds, it will return boottime in seconds.
|
|
* If @timestamp is a non-positive, it returns -1. Note that a (valid) monotonic-timestamp
|
|
* is always positive.
|
|
*
|
|
* On older kernels that don't support CLOCK_BOOTTIME, the returned time is instead CLOCK_MONOTONIC.
|
|
**/
|
|
gint64
|
|
nm_utils_monotonic_timestamp_as_boottime (gint64 timestamp, gint64 timestamp_ns_per_tick)
|
|
{
|
|
gint64 offset;
|
|
|
|
/* only support ns-per-tick being a multiple of 10. */
|
|
g_return_val_if_fail (timestamp_ns_per_tick == 1
|
|
|| (timestamp_ns_per_tick > 0 &&
|
|
timestamp_ns_per_tick <= NM_UTILS_NS_PER_SECOND &&
|
|
timestamp_ns_per_tick % 10 == 0),
|
|
-1);
|
|
|
|
/* Check that the timestamp is in a valid range. */
|
|
g_return_val_if_fail (timestamp >= 0, -1);
|
|
|
|
/* if the caller didn't yet ever fetch a monotonic-timestamp, he cannot pass any meaningful
|
|
* value (because he has no idea what these timestamps would be). That would be a bug. */
|
|
g_return_val_if_fail (monotonic_timestamp_clock_mode != 0, -1);
|
|
|
|
/* calculate the offset of monotonic-timestamp to boottime. offset_s is <= 1. */
|
|
offset = monotonic_timestamp_offset_sec * (NM_UTILS_NS_PER_SECOND / timestamp_ns_per_tick);
|
|
|
|
/* check for overflow. */
|
|
g_return_val_if_fail (offset > 0 || timestamp < G_MAXINT64 + offset, G_MAXINT64);
|
|
|
|
return timestamp - offset;
|
|
}
|
|
|
|
|
|
#define IPV6_PROPERTY_DIR "/proc/sys/net/ipv6/conf/"
|
|
#define IPV4_PROPERTY_DIR "/proc/sys/net/ipv4/conf/"
|
|
G_STATIC_ASSERT (sizeof (IPV4_PROPERTY_DIR) == sizeof (IPV6_PROPERTY_DIR));
|
|
|
|
static const char *
|
|
_get_property_path (const char *ifname,
|
|
const char *property,
|
|
gboolean ipv6)
|
|
{
|
|
static char path[sizeof (IPV6_PROPERTY_DIR) + IFNAMSIZ + 32];
|
|
int len;
|
|
|
|
ifname = ASSERT_VALID_PATH_COMPONENT (ifname);
|
|
property = ASSERT_VALID_PATH_COMPONENT (property);
|
|
|
|
len = g_snprintf (path,
|
|
sizeof (path),
|
|
"%s%s/%s",
|
|
ipv6 ? IPV6_PROPERTY_DIR : IPV4_PROPERTY_DIR,
|
|
ifname,
|
|
property);
|
|
g_assert (len < sizeof (path) - 1);
|
|
|
|
return path;
|
|
}
|
|
|
|
/**
|
|
* nm_utils_ip6_property_path:
|
|
* @ifname: an interface name
|
|
* @property: a property name
|
|
*
|
|
* Returns the path to IPv6 property @property on @ifname. Note that
|
|
* this uses a static buffer.
|
|
*/
|
|
const char *
|
|
nm_utils_ip6_property_path (const char *ifname, const char *property)
|
|
{
|
|
return _get_property_path (ifname, property, TRUE);
|
|
}
|
|
|
|
/**
|
|
* nm_utils_ip4_property_path:
|
|
* @ifname: an interface name
|
|
* @property: a property name
|
|
*
|
|
* Returns the path to IPv4 property @property on @ifname. Note that
|
|
* this uses a static buffer.
|
|
*/
|
|
const char *
|
|
nm_utils_ip4_property_path (const char *ifname, const char *property)
|
|
{
|
|
return _get_property_path (ifname, property, FALSE);
|
|
}
|
|
|
|
gboolean
|
|
nm_utils_is_valid_path_component (const char *name)
|
|
{
|
|
const char *n;
|
|
|
|
if (name == NULL || name[0] == '\0')
|
|
return FALSE;
|
|
|
|
if (name[0] == '.') {
|
|
if (name[1] == '\0')
|
|
return FALSE;
|
|
if (name[1] == '.' && name[2] == '\0')
|
|
return FALSE;
|
|
}
|
|
n = name;
|
|
do {
|
|
if (*n == '/')
|
|
return FALSE;
|
|
} while (*(++n) != '\0');
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
const char *
|
|
ASSERT_VALID_PATH_COMPONENT (const char *name)
|
|
{
|
|
if (G_LIKELY (nm_utils_is_valid_path_component (name)))
|
|
return name;
|
|
|
|
nm_log_err (LOGD_CORE, "Failed asserting path component: %s%s%s",
|
|
NM_PRINT_FMT_QUOTED (name, "\"", name, "\"", "(null)"));
|
|
g_error ("FATAL: Failed asserting path component: %s%s%s",
|
|
NM_PRINT_FMT_QUOTED (name, "\"", name, "\"", "(null)"));
|
|
g_assert_not_reached ();
|
|
}
|
|
|
|
gboolean
|
|
nm_utils_is_specific_hostname (const char *name)
|
|
{
|
|
if (!name)
|
|
return FALSE;
|
|
if ( strcmp (name, "(none)")
|
|
&& strcmp (name, "localhost")
|
|
&& strcmp (name, "localhost6")
|
|
&& strcmp (name, "localhost.localdomain")
|
|
&& strcmp (name, "localhost6.localdomain6"))
|
|
return TRUE;
|
|
return FALSE;
|
|
}
|
|
|
|
/******************************************************************/
|
|
|
|
/* Returns the "u" (universal/local) bit value for a Modified EUI-64 */
|
|
static gboolean
|
|
get_gre_eui64_u_bit (guint32 addr)
|
|
{
|
|
static const struct {
|
|
guint32 mask;
|
|
guint32 result;
|
|
} items[] = {
|
|
{ 0xff000000 }, { 0x7f000000 }, /* IPv4 loopback */
|
|
{ 0xf0000000 }, { 0xe0000000 }, /* IPv4 multicast */
|
|
{ 0xffffff00 }, { 0xe0000000 }, /* IPv4 local multicast */
|
|
{ 0xffffffff }, { INADDR_BROADCAST }, /* limited broadcast */
|
|
{ 0xff000000 }, { 0x00000000 }, /* zero net */
|
|
{ 0xff000000 }, { 0x0a000000 }, /* private 10 (RFC3330) */
|
|
{ 0xfff00000 }, { 0xac100000 }, /* private 172 */
|
|
{ 0xffff0000 }, { 0xc0a80000 }, /* private 192 */
|
|
{ 0xffff0000 }, { 0xa9fe0000 }, /* IPv4 link-local */
|
|
{ 0xffffff00 }, { 0xc0586300 }, /* anycast 6-to-4 */
|
|
{ 0xffffff00 }, { 0xc0000200 }, /* test 192 */
|
|
{ 0xfffe0000 }, { 0xc6120000 }, /* test 198 */
|
|
};
|
|
guint i;
|
|
|
|
for (i = 0; i < G_N_ELEMENTS (items); i++) {
|
|
if ((addr & htonl (items[i].mask)) == htonl (items[i].result))
|
|
return 0x00; /* "local" scope */
|
|
}
|
|
return 0x02; /* "universal" scope */
|
|
}
|
|
|
|
/**
|
|
* nm_utils_get_ipv6_interface_identifier:
|
|
* @link_type: the hardware link type
|
|
* @hwaddr: the hardware address of the interface
|
|
* @hwaddr_len: the length (in bytes) of @hwaddr
|
|
* @dev_id: the device identifier, if any
|
|
* @out_iid: on success, filled with the interface identifier; on failure
|
|
* zeroed out
|
|
*
|
|
* Constructs an interface identifier in "Modified EUI-64" format which is
|
|
* suitable for constructing IPv6 addresses. Note that the identifier is
|
|
* not obscured in any way (eg, RFC3041).
|
|
*
|
|
* Returns: %TRUE if the interface identifier could be constructed, %FALSE if
|
|
* if could not be constructed.
|
|
*/
|
|
gboolean
|
|
nm_utils_get_ipv6_interface_identifier (NMLinkType link_type,
|
|
const guint8 *hwaddr,
|
|
guint hwaddr_len,
|
|
guint dev_id,
|
|
NMUtilsIPv6IfaceId *out_iid)
|
|
{
|
|
guint32 addr;
|
|
|
|
g_return_val_if_fail (hwaddr != NULL, FALSE);
|
|
g_return_val_if_fail (hwaddr_len > 0, FALSE);
|
|
g_return_val_if_fail (out_iid != NULL, FALSE);
|
|
|
|
out_iid->id = 0;
|
|
|
|
switch (link_type) {
|
|
case NM_LINK_TYPE_INFINIBAND:
|
|
/* Use the port GUID per http://tools.ietf.org/html/rfc4391#section-8,
|
|
* making sure to set the 'u' bit to 1. The GUID is the lower 64 bits
|
|
* of the IPoIB interface's hardware address.
|
|
*/
|
|
g_return_val_if_fail (hwaddr_len == INFINIBAND_ALEN, FALSE);
|
|
memcpy (out_iid->id_u8, hwaddr + INFINIBAND_ALEN - 8, 8);
|
|
out_iid->id_u8[0] |= 0x02;
|
|
return TRUE;
|
|
case NM_LINK_TYPE_GRE:
|
|
case NM_LINK_TYPE_GRETAP:
|
|
/* Hardware address is the network-endian IPv4 address */
|
|
g_return_val_if_fail (hwaddr_len == 4, FALSE);
|
|
addr = * (guint32 *) hwaddr;
|
|
out_iid->id_u8[0] = get_gre_eui64_u_bit (addr);
|
|
out_iid->id_u8[1] = 0x00;
|
|
out_iid->id_u8[2] = 0x5E;
|
|
out_iid->id_u8[3] = 0xFE;
|
|
memcpy (out_iid->id_u8 + 4, &addr, 4);
|
|
return TRUE;
|
|
default:
|
|
if (hwaddr_len == ETH_ALEN) {
|
|
/* Translate 48-bit MAC address to a 64-bit Modified EUI-64. See
|
|
* http://tools.ietf.org/html/rfc4291#appendix-A and the Linux
|
|
* kernel's net/ipv6/addrconf.c::ipv6_generate_eui64() function.
|
|
*/
|
|
out_iid->id_u8[0] = hwaddr[0];
|
|
out_iid->id_u8[1] = hwaddr[1];
|
|
out_iid->id_u8[2] = hwaddr[2];
|
|
if (dev_id) {
|
|
out_iid->id_u8[3] = (dev_id >> 8) & 0xff;
|
|
out_iid->id_u8[4] = dev_id & 0xff;
|
|
} else {
|
|
out_iid->id_u8[0] ^= 0x02;
|
|
out_iid->id_u8[3] = 0xff;
|
|
out_iid->id_u8[4] = 0xfe;
|
|
}
|
|
out_iid->id_u8[5] = hwaddr[3];
|
|
out_iid->id_u8[6] = hwaddr[4];
|
|
out_iid->id_u8[7] = hwaddr[5];
|
|
return TRUE;
|
|
}
|
|
break;
|
|
}
|
|
return FALSE;
|
|
}
|
|
void
|
|
nm_utils_ipv6_addr_set_interface_identfier (struct in6_addr *addr,
|
|
const NMUtilsIPv6IfaceId iid)
|
|
{
|
|
memcpy (addr->s6_addr + 8, &iid.id_u8, 8);
|
|
}
|
|
|
|
void
|
|
nm_utils_ipv6_interface_identfier_get_from_addr (NMUtilsIPv6IfaceId *iid,
|
|
const struct in6_addr *addr)
|
|
{
|
|
memcpy (iid, addr->s6_addr + 8, 8);
|
|
}
|
|
|
|
static gboolean
|
|
_set_stable_privacy (struct in6_addr *addr,
|
|
const char *ifname,
|
|
const char *uuid,
|
|
guint dad_counter,
|
|
gchar *secret_key,
|
|
gsize key_len,
|
|
GError **error)
|
|
{
|
|
GChecksum *sum;
|
|
guint8 digest[32];
|
|
guint32 tmp[2];
|
|
gsize len = sizeof (digest);
|
|
|
|
g_return_val_if_fail (key_len, FALSE);
|
|
|
|
/* Documentation suggests that this can fail.
|
|
* Maybe in case of a missing algorithm in crypto library? */
|
|
sum = g_checksum_new (G_CHECKSUM_SHA256);
|
|
if (!sum) {
|
|
g_set_error_literal (error, NM_UTILS_ERROR, NM_UTILS_ERROR_UNKNOWN,
|
|
"Can't create a SHA256 hash");
|
|
return FALSE;
|
|
}
|
|
|
|
key_len = MIN (key_len, G_MAXUINT32);
|
|
|
|
g_checksum_update (sum, addr->s6_addr, 8);
|
|
g_checksum_update (sum, (const guchar *) ifname, strlen (ifname) + 1);
|
|
if (!uuid)
|
|
uuid = "";
|
|
g_checksum_update (sum, (const guchar *) uuid, strlen (uuid) + 1);
|
|
tmp[0] = htonl (dad_counter);
|
|
tmp[1] = htonl (key_len);
|
|
g_checksum_update (sum, (const guchar *) tmp, sizeof (tmp));
|
|
g_checksum_update (sum, (const guchar *) secret_key, key_len);
|
|
|
|
g_checksum_get_digest (sum, digest, &len);
|
|
g_checksum_free (sum);
|
|
|
|
g_return_val_if_fail (len == 32, FALSE);
|
|
|
|
memcpy (addr->s6_addr + 8, &digest[0], 8);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
#define RFC7217_IDGEN_RETRIES 3
|
|
/**
|
|
* nm_utils_ipv6_addr_set_stable_privacy:
|
|
*
|
|
* Extend the address prefix with an interface identifier using the
|
|
* RFC 7217 Stable Privacy mechanism.
|
|
*
|
|
* Returns: %TRUE on success, %FALSE if the address could not be generated.
|
|
*/
|
|
gboolean
|
|
nm_utils_ipv6_addr_set_stable_privacy (struct in6_addr *addr,
|
|
const char *ifname,
|
|
const char *uuid,
|
|
guint dad_counter,
|
|
GError **error)
|
|
{
|
|
gchar *secret_key = NULL;
|
|
gsize key_len = 0;
|
|
gboolean success = FALSE;
|
|
|
|
if (dad_counter >= RFC7217_IDGEN_RETRIES) {
|
|
g_set_error_literal (error, NM_UTILS_ERROR, NM_UTILS_ERROR_UNKNOWN,
|
|
"Too many DAD collisions");
|
|
return FALSE;
|
|
}
|
|
|
|
/* Let's try to load a saved secret key first. */
|
|
if (g_file_get_contents (NMSTATEDIR "/secret_key", &secret_key, &key_len, NULL)) {
|
|
if (key_len < 16) {
|
|
g_set_error_literal (error, NM_UTILS_ERROR, NM_UTILS_ERROR_UNKNOWN,
|
|
"Key is too short to be usable");
|
|
key_len = 0;
|
|
}
|
|
} else {
|
|
int urandom = open ("/dev/urandom", O_RDONLY);
|
|
mode_t key_mask;
|
|
|
|
if (urandom == -1) {
|
|
g_set_error (error, NM_UTILS_ERROR, NM_UTILS_ERROR_UNKNOWN,
|
|
"Can't open /dev/urandom: %s", strerror (errno));
|
|
return FALSE;
|
|
}
|
|
|
|
/* RFC7217 mandates the key SHOULD be at least 128 bits.
|
|
* Let's use twice as much. */
|
|
key_len = 32;
|
|
secret_key = g_malloc (key_len);
|
|
|
|
key_mask = umask (0077);
|
|
if (read (urandom, secret_key, key_len) == key_len) {
|
|
if (!g_file_set_contents (NMSTATEDIR "/secret_key", secret_key, key_len, error)) {
|
|
g_prefix_error (error, "Can't write " NMSTATEDIR "/secret_key");
|
|
key_len = 0;
|
|
}
|
|
} else {
|
|
g_set_error_literal (error, NM_UTILS_ERROR, NM_UTILS_ERROR_UNKNOWN,
|
|
"Could not obtain a secret");
|
|
key_len = 0;
|
|
}
|
|
umask (key_mask);
|
|
close (urandom);
|
|
}
|
|
|
|
if (key_len) {
|
|
success = _set_stable_privacy (addr, ifname, uuid, dad_counter,
|
|
secret_key, key_len, error);
|
|
}
|
|
|
|
g_free (secret_key);
|
|
return success;
|
|
}
|
|
|
|
/**
|
|
* nm_utils_setpgid:
|
|
* @unused: unused
|
|
*
|
|
* This can be passed as a child setup function to the g_spawn*() family
|
|
* of functions, to ensure that the child is in its own process group
|
|
* (and thus, in some situations, will not be killed when NetworkManager
|
|
* is killed).
|
|
*/
|
|
void
|
|
nm_utils_setpgid (gpointer unused G_GNUC_UNUSED)
|
|
{
|
|
pid_t pid;
|
|
|
|
pid = getpid ();
|
|
setpgid (pid, pid);
|
|
}
|
|
|
|
/**
|
|
* nm_utils_g_value_set_strv:
|
|
* @value: a #GValue, initialized to store a #G_TYPE_STRV
|
|
* @strings: a #GPtrArray of strings
|
|
*
|
|
* Converts @strings to a #GStrv and stores it in @value.
|
|
*/
|
|
void
|
|
nm_utils_g_value_set_strv (GValue *value, GPtrArray *strings)
|
|
{
|
|
char **strv;
|
|
int i;
|
|
|
|
strv = g_new (char *, strings->len + 1);
|
|
for (i = 0; i < strings->len; i++)
|
|
strv[i] = g_strdup (strings->pdata[i]);
|
|
strv[i] = NULL;
|
|
|
|
g_value_take_boxed (value, strv);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
static gboolean
|
|
debug_key_matches (const gchar *key,
|
|
const gchar *token,
|
|
guint length)
|
|
{
|
|
/* may not call GLib functions: see note in g_parse_debug_string() */
|
|
for (; length; length--, key++, token++) {
|
|
char k = (*key == '_') ? '-' : g_ascii_tolower (*key );
|
|
char t = (*token == '_') ? '-' : g_ascii_tolower (*token);
|
|
|
|
if (k != t)
|
|
return FALSE;
|
|
}
|
|
|
|
return *key == '\0';
|
|
}
|
|
|
|
/**
|
|
* nm_utils_parse_debug_string:
|
|
* @string: the string to parse
|
|
* @keys: the debug keys
|
|
* @nkeys: number of entires in @keys
|
|
*
|
|
* Similar to g_parse_debug_string(), but does not special
|
|
* case "help" or "all".
|
|
*
|
|
* Returns: the flags
|
|
*/
|
|
guint
|
|
nm_utils_parse_debug_string (const char *string,
|
|
const GDebugKey *keys,
|
|
guint nkeys)
|
|
{
|
|
guint i;
|
|
guint result = 0;
|
|
const char *q;
|
|
|
|
if (string == NULL)
|
|
return 0;
|
|
|
|
while (*string) {
|
|
q = strpbrk (string, ":;, \t");
|
|
if (!q)
|
|
q = string + strlen (string);
|
|
|
|
for (i = 0; i < nkeys; i++) {
|
|
if (debug_key_matches (keys[i].key, string, q - string))
|
|
result |= keys[i].value;
|
|
}
|
|
|
|
string = q;
|
|
if (*string)
|
|
string++;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
|