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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2018 Red Hat, Inc.
*/
#include "libnm-core-impl/nm-default-libnm-core.h"
#include "nm-initrd-generator.h"
#include "libnm-base/nm-config-base.h"
#include "libnm-core-intern/nm-core-internal.h"
#include "libnm-core-intern/nm-keyfile-internal.h"
#include "libnm-glib-aux/nm-io-utils.h"
#include "libnm-log-core/nm-logging.h"
/*****************************************************************************/
#define _NMLOG(level, domain, ...) \
nm_log((level), \
(domain), \
NULL, \
NULL, \
"initrd-generator: " _NM_UTILS_MACRO_FIRST(__VA_ARGS__) \
_NM_UTILS_MACRO_REST(__VA_ARGS__))
/*****************************************************************************/
static void
output_conn(gpointer key, gpointer value, gpointer user_data)
{
const char *basename = key;
NMConnection *connection = value;
char *connections_dir = user_data;
nm_auto_unref_keyfile GKeyFile *file = NULL;
gs_free char *data = NULL;
gs_free_error GError *error = NULL;
gsize len;
NMSetting *setting;
setting = nm_setting_user_new();
nm_connection_add_setting(connection, setting);
nm_setting_user_set_data(NM_SETTING_USER(setting),
NM_USER_TAG_ORIGIN,
"nm-initrd-generator",
NULL);
if (!nm_connection_normalize(connection, NULL, NULL, &error))
goto err_out;
file = nm_keyfile_write(connection, NM_KEYFILE_HANDLER_FLAGS_NONE, NULL, NULL, &error);
if (file == NULL)
goto err_out;
data = g_key_file_to_data(file, &len, &error);
if (!data)
goto err_out;
if (connections_dir) {
gs_free char *filename = NULL;
gs_free char *full_filename = NULL;
filename = nm_keyfile_utils_create_filename(basename, TRUE);
full_filename = g_build_filename(connections_dir, filename, NULL);
if (!nm_utils_file_set_contents(full_filename, data, len, 0600, NULL, NULL, &error))
goto err_out;
} else
g_print("\n*** Connection '%s' ***\n\n%s", basename, data);
return;
err_out:
g_print("%s\n", error->message);
}
#define DEFAULT_SYSFS_DIR "/sys"
#define DEFAULT_INITRD_DATA_DIR NMRUNDIR "/initrd"
#define DEFAULT_RUN_CONFIG_DIR NMRUNDIR "/conf.d"
int
main(int argc, char *argv[])
{
GHashTable *connections;
gs_free char *connections_dir = NULL;
gs_free char *etc_connections_dir = NULL;
gs_free char *initrd_dir = NULL;
gs_free char *sysfs_dir = NULL;
gs_free char *run_config_dir = NULL;
gboolean dump_to_stdout = FALSE;
gs_strfreev char **remaining = NULL;
GOptionEntry option_entries[] = {
{"connections-dir",
'c',
0,
G_OPTION_ARG_FILENAME,
&connections_dir,
"Output connection directory",
NM_KEYFILE_PATH_NAME_RUN},
{"persistent-connections-dir",
'p',
0,
G_OPTION_ARG_FILENAME,
&etc_connections_dir,
"Persistent connection directory",
NM_KEYFILE_PATH_NAME_ETC_DEFAULT},
{"initrd-data-dir",
'i',
0,
G_OPTION_ARG_FILENAME,
&initrd_dir,
"Output initrd data directory",
DEFAULT_INITRD_DATA_DIR},
{"sysfs-dir",
'd',
0,
G_OPTION_ARG_FILENAME,
&sysfs_dir,
"The sysfs mount point",
DEFAULT_SYSFS_DIR},
{"run-config-dir",
'r',
0,
G_OPTION_ARG_FILENAME,
&run_config_dir,
"Output config directory",
DEFAULT_RUN_CONFIG_DIR},
{"stdout",
's',
0,
G_OPTION_ARG_NONE,
&dump_to_stdout,
"Dump connections to standard output",
NULL},
{G_OPTION_REMAINING, '\0', 0, G_OPTION_ARG_STRING_ARRAY, &remaining, NULL, NULL},
{NULL}};
nm_auto_free_option_context GOptionContext *option_context = NULL;
gs_free_error GError *error = NULL;
gs_free char *hostname = NULL;
int errsv;
gint64 carrier_timeout_sec = 0;
option_context = g_option_context_new(
"-- [ip=...] [rd.route=...] [bridge=...] [bond=...] [team=...] [vlan=...] "
"[bootdev=...] [nameserver=...] [rd.peerdns=...] [rd.bootif=...] [BOOTIF=...] "
"[rd.znet=...] [rd.net.timeout.carrier=...] ... ");
g_option_context_set_summary(option_context, "Generate early NetworkManager configuration.");
g_option_context_set_description(
option_context,
"This tool scans the command line for options relevant to network\n"
"configuration and creates configuration files for an early instance\n"
"of NetworkManager run from the initial ramdisk during early boot.");
g_option_context_add_main_entries(option_context, option_entries, GETTEXT_PACKAGE);
if (!g_option_context_parse(option_context, &argc, &argv, &error)) {
_LOGW(LOGD_CORE, "%s", error->message);
return 1;
}
if (!remaining) {
/* No arguments, no networking. Don't bother. */
return 0;
}
if (!etc_connections_dir)
etc_connections_dir = g_strdup(NM_KEYFILE_PATH_NAME_ETC_DEFAULT);
if (!connections_dir)
connections_dir = g_strdup(NM_KEYFILE_PATH_NAME_RUN);
if (!sysfs_dir)
sysfs_dir = g_strdup(DEFAULT_SYSFS_DIR);
if (!initrd_dir)
initrd_dir = g_strdup(DEFAULT_INITRD_DATA_DIR);
if (!run_config_dir)
run_config_dir = g_strdup(DEFAULT_RUN_CONFIG_DIR);
connections = nmi_cmdline_reader_parse(etc_connections_dir,
sysfs_dir,
(const char *const *) remaining,
&hostname,
&carrier_timeout_sec);
if (dump_to_stdout) {
nm_clear_g_free(&connections_dir);
nm_clear_g_free(&initrd_dir);
nm_clear_g_free(&run_config_dir);
if (hostname)
g_print("\n*** Hostname '%s' ***\n", hostname);
if (carrier_timeout_sec != 0)
g_print("\n*** Carrier Wait Timeout %" G_GINT64_FORMAT " sec ***\n",
carrier_timeout_sec);
} else {
if (g_mkdir_with_parents(connections_dir, 0755) != 0) {
errsv = errno;
_LOGW(LOGD_CORE, "%s: %s", connections_dir, nm_strerror_native(errsv));
return 1;
}
if (g_mkdir_with_parents(initrd_dir, 0755) != 0) {
errsv = errno;
_LOGW(LOGD_CORE, "%s: %s", initrd_dir, nm_strerror_native(errsv));
return 1;
}
if (g_mkdir_with_parents(run_config_dir, 0755) != 0) {
errsv = errno;
_LOGW(LOGD_CORE, "%s: %s", run_config_dir, nm_strerror_native(errsv));
return 1;
}
if (hostname) {
gs_free char *hostname_file = NULL;
gs_free char *data = NULL;
hostname_file = g_strdup_printf("%s/hostname", initrd_dir);
data = g_strdup_printf("%s\n", hostname);
if (!g_file_set_contents(hostname_file, data, strlen(data), &error)) {
_LOGW(LOGD_CORE, "%s: %s", hostname_file, error->message);
return 1;
}
}
if (carrier_timeout_sec != 0) {
nm_auto_unref_keyfile GKeyFile *keyfile = NULL;
gs_free char *filename = NULL;
keyfile = g_key_file_new();
g_key_file_set_list_separator(keyfile, NM_CONFIG_KEYFILE_LIST_SEPARATOR);
filename = g_strdup_printf("%s/15-carrier-timeout.conf", run_config_dir);
g_key_file_set_value(keyfile,
NM_CONFIG_KEYFILE_GROUPPREFIX_DEVICE "-15-carrier-timeout",
NM_CONFIG_KEYFILE_KEY_MATCH_DEVICE,
"*");
g_key_file_set_int64(keyfile,
NM_CONFIG_KEYFILE_GROUPPREFIX_DEVICE "-15-carrier-timeout",
NM_CONFIG_KEYFILE_KEY_DEVICE_CARRIER_WAIT_TIMEOUT,
carrier_timeout_sec * 1000);
if (!g_key_file_save_to_file(keyfile, filename, &error)) {
_LOGW(LOGD_CORE, "%s: %s", filename, error->message);
return 1;
}
}
}
g_hash_table_foreach(connections, output_conn, connections_dir);
g_hash_table_destroy(connections);
return 0;
}
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