New upstream version 1.29.90 upstream/1.29.90

1 files changed, 546 insertions, 0 deletions

diff --git a/src/core/main.c b/src/core/main.c
new file mode 100644
index 00000000..9b79bcbb
--- /dev/null
+++ b/src/core/main.c
@@ -0,0 +1,546 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2004 - 2017 Red Hat, Inc.
+ * Copyright (C) 2005 - 2008 Novell, Inc.
+ */
+
+#include "src/core/nm-default-daemon.h"
+
+#include <getopt.h>
+#include <locale.h>
+#include <stdlib.h>
+#include <signal.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <sys/resource.h>
+
+#include "main-utils.h"
+#include "nm-dbus-interface.h"
+#include "NetworkManagerUtils.h"
+#include "nm-manager.h"
+#include "platform/nm-linux-platform.h"
+#include "nm-dbus-manager.h"
+#include "devices/nm-device.h"
+#include "dhcp/nm-dhcp-manager.h"
+#include "nm-config.h"
+#include "nm-session-monitor.h"
+#include "nm-dispatcher.h"
+#include "settings/nm-settings.h"
+#include "nm-auth-manager.h"
+#include "nm-core-internal.h"
+#include "nm-dbus-object.h"
+#include "nm-connectivity.h"
+#include "dns/nm-dns-manager.h"
+#include "systemd/nm-sd.h"
+#include "nm-netns.h"
+
+#if !defined(NM_DIST_VERSION)
+    #define NM_DIST_VERSION VERSION
+#endif
+
+#define NM_DEFAULT_PID_FILE NMRUNDIR "/NetworkManager.pid"
+
+#define CONFIG_ATOMIC_SECTION_PREFIXES ((char **) NULL)
+
+static GMainLoop *main_loop          = NULL;
+static gboolean   configure_and_quit = FALSE;
+
+static struct {
+    gboolean show_version;
+    gboolean print_config;
+    gboolean become_daemon;
+    gboolean g_fatal_warnings;
+    gboolean run_from_build_dir;
+    char *   opt_log_level;
+    char *   opt_log_domains;
+    char *   pidfile;
+} global_opt = {
+    .become_daemon = TRUE,
+};
+
+static void
+_set_g_fatal_warnings(void)
+{
+    GLogLevelFlags fatal_mask;
+
+    fatal_mask = g_log_set_always_fatal(G_LOG_FATAL_MASK);
+    fatal_mask |= G_LOG_LEVEL_WARNING | G_LOG_LEVEL_CRITICAL;
+    g_log_set_always_fatal(fatal_mask);
+}
+
+static void
+_init_nm_debug(NMConfig *config)
+{
+    gs_free char *debug = NULL;
+    enum {
+        D_RLIMIT_CORE    = (1 << 0),
+        D_FATAL_WARNINGS = (1 << 1),
+    };
+    GDebugKey keys[] = {
+        {"RLIMIT_CORE", D_RLIMIT_CORE},
+        {"fatal-warnings", D_FATAL_WARNINGS},
+    };
+    guint       flags;
+    const char *env = getenv("NM_DEBUG");
+
+    debug = nm_config_data_get_value(nm_config_get_data_orig(config),
+                                     NM_CONFIG_KEYFILE_GROUP_MAIN,
+                                     NM_CONFIG_KEYFILE_KEY_MAIN_DEBUG,
+                                     NM_CONFIG_GET_VALUE_NONE);
+
+    flags = nm_utils_parse_debug_string(env, keys, G_N_ELEMENTS(keys));
+    flags |= nm_utils_parse_debug_string(debug, keys, G_N_ELEMENTS(keys));
+
+#if !defined(__SANITIZE_ADDRESS__)
+    if (NM_FLAGS_HAS(flags, D_RLIMIT_CORE)) {
+        /* only enable this, if explicitly requested, because it might
+         * expose sensitive data. */
+
+        struct rlimit limit = {
+            .rlim_cur = RLIM_INFINITY,
+            .rlim_max = RLIM_INFINITY,
+        };
+        setrlimit(RLIMIT_CORE, &limit);
+    }
+#endif
+
+    if (NM_FLAGS_HAS(flags, D_FATAL_WARNINGS))
+        _set_g_fatal_warnings();
+}
+
+void
+nm_main_config_reload(int signal)
+{
+    NMConfigChangeFlags reload_flags;
+
+    switch (signal) {
+    case SIGHUP:
+        reload_flags = NM_CONFIG_CHANGE_CAUSE_SIGHUP;
+        break;
+    case SIGUSR1:
+        reload_flags = NM_CONFIG_CHANGE_CAUSE_SIGUSR1;
+        break;
+    case SIGUSR2:
+        reload_flags = NM_CONFIG_CHANGE_CAUSE_SIGUSR2;
+        break;
+    default:
+        g_return_if_reached();
+    }
+
+    nm_log_info(LOGD_CORE, "reload configuration (signal %s)...", strsignal(signal));
+
+    /* The signal handler thread is only installed after
+     * creating NMConfig instance, and on shut down we
+     * no longer run the mainloop (to reach this point).
+     *
+     * Hence, a NMConfig singleton instance must always be
+     * available. */
+    nm_config_reload(nm_config_get(), reload_flags, TRUE);
+}
+
+static void
+manager_configure_quit(NMManager *manager, gpointer user_data)
+{
+    nm_log_info(LOGD_CORE, "quitting now that startup is complete");
+    g_main_loop_quit(main_loop);
+    configure_and_quit = TRUE;
+}
+
+static int
+print_config(NMConfigCmdLineOptions *config_cli)
+{
+    gs_unref_object NMConfig *config = NULL;
+    gs_free_error GError *error      = NULL;
+    NMConfigData *        config_data;
+    const char *const *   warnings;
+
+    nm_logging_setup("OFF", "ALL", NULL, NULL);
+
+    config = nm_config_new(config_cli, CONFIG_ATOMIC_SECTION_PREFIXES, &error);
+    if (config == NULL) {
+        fprintf(stderr, _("Failed to read configuration: %s\n"), error->message);
+        return 7;
+    }
+
+    config_data = nm_config_get_data(config);
+    fprintf(stdout,
+            "# NetworkManager configuration: %s\n",
+            nm_config_data_get_config_description(config_data));
+    nm_config_data_log(config_data, "", "", nm_config_get_no_auto_default_file(config), stdout);
+
+    warnings = nm_config_get_warnings(config);
+    if (warnings && warnings[0])
+        fprintf(stdout, "\n");
+    for (; warnings && warnings[0]; warnings++)
+        fprintf(stdout, "# WARNING: %s\n", warnings[0]);
+
+    return 0;
+}
+
+static void
+do_early_setup(int *argc, char **argv[], NMConfigCmdLineOptions *config_cli)
+{
+    GOptionEntry options[] = {{"version",
+                               'V',
+                               0,
+                               G_OPTION_ARG_NONE,
+                               &global_opt.show_version,
+                               N_("Print NetworkManager version and exit"),
+                               NULL},
+                              {"no-daemon",
+                               'n',
+                               G_OPTION_FLAG_REVERSE,
+                               G_OPTION_ARG_NONE,
+                               &global_opt.become_daemon,
+                               N_("Don't become a daemon"),
+                               NULL},
+                              {"log-level",
+                               0,
+                               0,
+                               G_OPTION_ARG_STRING,
+                               &global_opt.opt_log_level,
+                               N_("Log level: one of [%s]"),
+                               "INFO"},
+                              {"log-domains",
+                               0,
+                               0,
+                               G_OPTION_ARG_STRING,
+                               &global_opt.opt_log_domains,
+                               N_("Log domains separated by ',': any combination of [%s]"),
+                               "PLATFORM,RFKILL,WIFI"},
+                              {"g-fatal-warnings",
+                               0,
+                               0,
+                               G_OPTION_ARG_NONE,
+                               &global_opt.g_fatal_warnings,
+                               N_("Make all warnings fatal"),
+                               NULL},
+                              {"pid-file",
+                               'p',
+                               0,
+                               G_OPTION_ARG_FILENAME,
+                               &global_opt.pidfile,
+                               N_("Specify the location of a PID file"),
+                               NM_DEFAULT_PID_FILE},
+                              {"run-from-build-dir",
+                               0,
+                               0,
+                               G_OPTION_ARG_NONE,
+                               &global_opt.run_from_build_dir,
+                               "Run from build directory",
+                               NULL},
+                              {"print-config",
+                               0,
+                               0,
+                               G_OPTION_ARG_NONE,
+                               &global_opt.print_config,
+                               N_("Print NetworkManager configuration and exit"),
+                               NULL},
+                              {NULL}};
+
+    if (!nm_main_utils_early_setup(
+            "NetworkManager",
+            argc,
+            argv,
+            options,
+            (void (*)(gpointer, GOptionContext *)) nm_config_cmd_line_options_add_to_entries,
+            config_cli,
+            _("NetworkManager monitors all network connections and automatically\nchooses the best "
+              "connection to use.  It also allows the user to\nspecify wireless access points "
+              "which wireless cards in the computer\nshould associate with.")))
+        exit(1);
+
+    global_opt.pidfile = global_opt.pidfile ?: g_strdup(NM_DEFAULT_PID_FILE);
+}
+
+static gboolean
+_dbus_manager_init(NMConfig *config)
+{
+    NMDBusManager *              busmgr;
+    NMConfigConfigureAndQuitType c_a_q_type;
+
+    busmgr = nm_dbus_manager_get();
+
+    c_a_q_type = nm_config_get_configure_and_quit(config);
+
+    if (c_a_q_type == NM_CONFIG_CONFIGURE_AND_QUIT_DISABLED)
+        return nm_dbus_manager_acquire_bus(busmgr, TRUE);
+
+    if (c_a_q_type == NM_CONFIG_CONFIGURE_AND_QUIT_ENABLED) {
+        /* D-Bus is useless in configure and quit mode -- we're eventually dropping
+         * off and potential clients would have no way of knowing whether we're
+         * finished already or didn't start yet.
+         *
+         * But we still create a nm_dbus_manager_get_dbus_connection() D-Bus connection
+         * so that we can talk to other services like firewalld. */
+        return nm_dbus_manager_acquire_bus(busmgr, FALSE);
+    }
+
+    nm_assert(c_a_q_type == NM_CONFIG_CONFIGURE_AND_QUIT_INITRD);
+    /* in initrd we don't have D-Bus at all. Don't even try to get the G_BUS_TYPE_SYSTEM
+     * connection. And of course don't claim the D-Bus name. */
+    return TRUE;
+}
+
+/*
+ * main
+ *
+ */
+int
+main(int argc, char *argv[])
+{
+    gboolean      success = FALSE;
+    NMManager *   manager = NULL;
+    NMConfig *    config;
+    gs_free_error GError *  error         = NULL;
+    gboolean                wrote_pidfile = FALSE;
+    char *                  bad_domains   = NULL;
+    NMConfigCmdLineOptions *config_cli;
+    guint                   sd_id                        = 0;
+    GError *                error_invalid_logging_config = NULL;
+    const char *const *     warnings;
+    int                     errsv;
+
+    /* Known to cause a possible deadlock upon GDBus initialization:
+     * https://bugzilla.gnome.org/show_bug.cgi?id=674885 */
+    g_type_ensure(G_TYPE_SOCKET);
+    g_type_ensure(G_TYPE_DBUS_CONNECTION);
+    g_type_ensure(NM_TYPE_DBUS_MANAGER);
+
+    _nm_utils_is_manager_process = TRUE;
+
+    main_loop = g_main_loop_new(NULL, FALSE);
+
+    /* we determine a first-start (contrary to a restart during the same boot)
+     * based on the existence of NM_CONFIG_DEVICE_STATE_DIR directory. */
+    config_cli = nm_config_cmd_line_options_new(
+        !g_file_test(NM_CONFIG_DEVICE_STATE_DIR, G_FILE_TEST_IS_DIR));
+
+    do_early_setup(&argc, &argv, config_cli);
+
+    if (global_opt.g_fatal_warnings)
+        _set_g_fatal_warnings();
+
+    if (global_opt.show_version) {
+        fprintf(stdout, NM_DIST_VERSION "\n");
+        exit(0);
+    }
+
+    if (global_opt.print_config) {
+        int result;
+
+        result = print_config(config_cli);
+        nm_config_cmd_line_options_free(config_cli);
+        exit(result);
+    }
+
+    nm_main_utils_ensure_root();
+
+    nm_main_utils_ensure_not_running_pidfile(global_opt.pidfile);
+
+    nm_main_utils_ensure_statedir();
+    nm_main_utils_ensure_rundir();
+
+    /* When running from the build directory, determine our build directory
+     * base and set helper paths in the build tree */
+    if (global_opt.run_from_build_dir) {
+        char *path, *slash;
+        int   g;
+
+        /* exe is <basedir>/src/.libs/lt-NetworkManager, so chop off
+         * the last three components */
+        path = realpath("/proc/self/exe", NULL);
+        g_assert(path != NULL);
+        for (g = 0; g < 3; ++g) {
+            slash = strrchr(path, '/');
+            g_assert(slash != NULL);
+            *slash = '\0';
+        }
+
+        /* don't free these strings, we need them for the entire
+         * process lifetime */
+        nm_dhcp_helper_path = g_strdup_printf("%s/src/dhcp/nm-dhcp-helper", path);
+
+        g_free(path);
+    }
+
+    if (!nm_logging_setup(global_opt.opt_log_level,
+                          global_opt.opt_log_domains,
+                          &bad_domains,
+                          &error)) {
+        fprintf(stderr,
+                _("%s.  Please use --help to see a list of valid options.\n"),
+                error->message);
+        exit(1);
+    }
+
+    /* Read the config file and CLI overrides */
+    config = nm_config_setup(config_cli, CONFIG_ATOMIC_SECTION_PREFIXES, &error);
+    nm_config_cmd_line_options_free(config_cli);
+    config_cli = NULL;
+    if (config == NULL) {
+        fprintf(stderr, _("Failed to read configuration: %s\n"), error->message);
+        exit(1);
+    }
+
+    _init_nm_debug(config);
+
+    /* Initialize logging from config file *only* if not explicitly
+     * specified by commandline.
+     */
+    if (global_opt.opt_log_level == NULL && global_opt.opt_log_domains == NULL) {
+        if (!nm_logging_setup(nm_config_get_log_level(config),
+                              nm_config_get_log_domains(config),
+                              &bad_domains,
+                              &error_invalid_logging_config)) {
+            /* ignore error, and print the failure reason below.
+             * Likewise, print about bad_domains below. */
+        }
+    }
+
+    if (global_opt.become_daemon && !nm_config_get_is_debug(config)) {
+        if (daemon(0, 0) < 0) {
+            errsv = errno;
+            fprintf(stderr,
+                    _("Could not daemonize: %s [error %u]\n"),
+                    nm_strerror_native(errsv),
+                    errsv);
+            exit(1);
+        }
+        wrote_pidfile = nm_main_utils_write_pidfile(global_opt.pidfile);
+    }
+
+    /* Set up unix signal handling - before creating threads, but after daemonizing! */
+    nm_main_utils_setup_signals(main_loop);
+
+    {
+        gs_free char *v = NULL;
+
+        v = nm_config_data_get_value(NM_CONFIG_GET_DATA_ORIG,
+                                     NM_CONFIG_KEYFILE_GROUP_LOGGING,
+                                     NM_CONFIG_KEYFILE_KEY_LOGGING_BACKEND,
+                                     NM_CONFIG_GET_VALUE_STRIP | NM_CONFIG_GET_VALUE_NO_EMPTY);
+        nm_logging_init(v, nm_config_get_is_debug(config));
+    }
+
+    nm_log_info(LOGD_CORE,
+                "NetworkManager (version " NM_DIST_VERSION ") is starting... (%s%s)",
+                nm_config_get_first_start(config) ? "for the first time" : "after a restart",
+                NM_MORE_ASSERTS != 0 ? ", asserts:" G_STRINGIFY(NM_MORE_ASSERTS) : "");
+
+    nm_log_info(LOGD_CORE,
+                "Read config: %s",
+                nm_config_data_get_config_description(nm_config_get_data(config)));
+    nm_config_data_log(nm_config_get_data(config),
+                       "CONFIG: ",
+                       "  ",
+                       nm_config_get_no_auto_default_file(config),
+                       NULL);
+
+    if (error_invalid_logging_config) {
+        nm_log_warn(LOGD_CORE,
+                    "config: invalid logging configuration: %s",
+                    error_invalid_logging_config->message);
+        g_clear_error(&error_invalid_logging_config);
+    }
+    if (bad_domains) {
+        nm_log_warn(LOGD_CORE,
+                    "config: invalid logging domains '%s' from %s",
+                    bad_domains,
+                    (global_opt.opt_log_level == NULL && global_opt.opt_log_domains == NULL)
+                        ? "config file"
+                        : "command line");
+        nm_clear_g_free(&bad_domains);
+    }
+
+    warnings = nm_config_get_warnings(config);
+    for (; warnings && *warnings; warnings++)
+        nm_log_warn(LOGD_CORE, "config: %s", *warnings);
+    nm_config_clear_warnings(config);
+
+    /* the first access to State causes the file to be read (and possibly print a warning) */
+    nm_config_state_get(config);
+
+    nm_log_dbg(LOGD_CORE,
+               "WEXT support is %s",
+#if HAVE_WEXT
+               "enabled"
+#else
+               "disabled"
+#endif
+    );
+
+    if (!_dbus_manager_init(config))
+        goto done_no_manager;
+
+    nm_linux_platform_setup();
+
+    NM_UTILS_KEEP_ALIVE(config, nm_netns_get(), "NMConfig-depends-on-NMNetns");
+
+    nm_auth_manager_setup(nm_config_data_get_main_auth_polkit(nm_config_get_data_orig(config)));
+
+    manager = nm_manager_setup();
+
+    nm_dbus_manager_start(nm_dbus_manager_get(), nm_manager_dbus_set_property_handle, manager);
+
+    g_signal_connect(manager,
+                     NM_MANAGER_CONFIGURE_QUIT,
+                     G_CALLBACK(manager_configure_quit),
+                     config);
+
+    if (!nm_manager_start(manager, &error)) {
+        nm_log_err(LOGD_CORE, "failed to initialize: %s", error->message);
+        goto done;
+    }
+
+    nm_platform_process_events(NM_PLATFORM_GET);
+
+    /* Make sure the loopback interface is up. If interface is down, we bring
+     * it up and kernel will assign it link-local IPv4 and IPv6 addresses. If
+     * it was already up, we assume is in clean state.
+     *
+     * TODO: it might be desirable to check the list of addresses and compare
+     * it with a list of expected addresses (one of the protocol families
+     * could be disabled). The 'lo' interface is sometimes used for assigning
+     * global addresses so their availability doesn't depend on the state of
+     * physical interfaces.
+     */
+    nm_log_dbg(LOGD_CORE, "setting up local loopback");
+    nm_platform_link_set_up(NM_PLATFORM_GET, 1, NULL);
+
+    success = TRUE;
+
+    if (configure_and_quit == FALSE) {
+        sd_id = nm_sd_event_attach_default();
+
+        g_main_loop_run(main_loop);
+    }
+
+done:
+
+    /* write the device-state to file. Note that we only persist the
+     * state here. We don't bother updating the state as devices
+     * change during regular operation. If NM is killed with SIGKILL,
+     * it misses to update the state. */
+    nm_manager_write_device_state_all(manager);
+
+    nm_manager_stop(manager);
+
+    nm_config_state_set(config, TRUE, TRUE);
+
+    nm_dns_manager_stop(nm_dns_manager_get());
+
+    nm_settings_kf_db_write(NM_SETTINGS_GET);
+
+done_no_manager:
+    if (global_opt.pidfile && wrote_pidfile)
+        unlink(global_opt.pidfile);
+
+    nm_log_info(LOGD_CORE, "exiting (%s)", success ? "success" : "error");
+
+    nm_clear_g_source(&sd_id);
+
+    exit(success ? 0 : 1);
+}