diff options
Diffstat (limited to 'src/config/nm-config.c')
| -rw-r--r-- | src/config/nm-config.c | 604 |
1 files changed, 604 insertions, 0 deletions
diff --git a/src/config/nm-config.c b/src/config/nm-config.c new file mode 100644 index 000000000..f6688b75d --- /dev/null +++ b/src/config/nm-config.c @@ -0,0 +1,604 @@ +/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */ +/* NetworkManager -- Network link manager + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Copyright (C) 2011 Red Hat, Inc. + * Copyright (C) 2013 Thomas Bechtold <thomasbechtold@jpberlin.de> + */ + +#include <config.h> +#include <string.h> +#include <stdio.h> + +#include "nm-config.h" +#include "nm-logging.h" +#include "nm-utils.h" +#include "nm-glib-compat.h" + +#include <gio/gio.h> +#include <glib/gi18n.h> + +#define NM_DEFAULT_SYSTEM_CONF_FILE NMCONFDIR "/NetworkManager.conf" +#define NM_DEFAULT_SYSTEM_CONF_DIR NMCONFDIR "/conf.d" +#define NM_OLD_SYSTEM_CONF_FILE NMCONFDIR "/nm-system-settings.conf" +#define NM_NO_AUTO_DEFAULT_STATE_FILE NMSTATEDIR "/no-auto-default.state" + +typedef struct { + char *nm_conf_path; + char *config_dir; + char *config_description; + char *no_auto_default_file; + GKeyFile *keyfile; + + char **plugins; + gboolean monitor_connection_files; + char *dhcp_client; + char *dns_mode; + + char *log_level; + char *log_domains; + + char *debug; + + char *connectivity_uri; + gint connectivity_interval; + char *connectivity_response; + + char **no_auto_default; + char **ignore_carrier; +} NMConfigPrivate; + +static NMConfig *singleton = NULL; + +G_DEFINE_TYPE (NMConfig, nm_config, G_TYPE_OBJECT) + +#define NM_CONFIG_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), NM_TYPE_CONFIG, NMConfigPrivate)) + +/************************************************************************/ + +const char * +nm_config_get_path (NMConfig *config) +{ + g_return_val_if_fail (config != NULL, NULL); + + return NM_CONFIG_GET_PRIVATE (config)->nm_conf_path; +} + +const char * +nm_config_get_description (NMConfig *config) +{ + g_return_val_if_fail (config != NULL, NULL); + + return NM_CONFIG_GET_PRIVATE (config)->config_description; +} + +const char ** +nm_config_get_plugins (NMConfig *config) +{ + g_return_val_if_fail (config != NULL, NULL); + + return (const char **) NM_CONFIG_GET_PRIVATE (config)->plugins; +} + +gboolean +nm_config_get_monitor_connection_files (NMConfig *config) +{ + g_return_val_if_fail (config != NULL, FALSE); + + return NM_CONFIG_GET_PRIVATE (config)->monitor_connection_files; +} + +const char * +nm_config_get_dhcp_client (NMConfig *config) +{ + g_return_val_if_fail (config != NULL, NULL); + + return NM_CONFIG_GET_PRIVATE (config)->dhcp_client; +} + +const char * +nm_config_get_dns_mode (NMConfig *config) +{ + g_return_val_if_fail (config != NULL, NULL); + + return NM_CONFIG_GET_PRIVATE (config)->dns_mode; +} + +const char * +nm_config_get_log_level (NMConfig *config) +{ + g_return_val_if_fail (config != NULL, NULL); + + return NM_CONFIG_GET_PRIVATE (config)->log_level; +} + +const char * +nm_config_get_log_domains (NMConfig *config) +{ + g_return_val_if_fail (config != NULL, NULL); + + return NM_CONFIG_GET_PRIVATE (config)->log_domains; +} + +const char * +nm_config_get_debug (NMConfig *config) +{ + g_return_val_if_fail (config != NULL, NULL); + + return NM_CONFIG_GET_PRIVATE (config)->debug; +} + +const char * +nm_config_get_connectivity_uri (NMConfig *config) +{ + g_return_val_if_fail (config != NULL, NULL); + + return NM_CONFIG_GET_PRIVATE (config)->connectivity_uri; +} + +const guint +nm_config_get_connectivity_interval (NMConfig *config) +{ + g_return_val_if_fail (config != NULL, 0); + + /* We store interval as signed internally to track whether it's + * set or not, but report as unsigned to callers. + */ + return MAX (NM_CONFIG_GET_PRIVATE (config)->connectivity_interval, 0); +} + +const char * +nm_config_get_connectivity_response (NMConfig *config) +{ + g_return_val_if_fail (config != NULL, NULL); + + return NM_CONFIG_GET_PRIVATE (config)->connectivity_response; +} + +char * +nm_config_get_value (NMConfig *config, const char *group, const char *key, GError **error) +{ + NMConfigPrivate *priv = NM_CONFIG_GET_PRIVATE (config); + + return g_key_file_get_string (priv->keyfile, group, key, error); +} + +gboolean +nm_config_get_ignore_carrier (NMConfig *config, NMConfigDevice *device) +{ + NMConfigPrivate *priv = NM_CONFIG_GET_PRIVATE (config); + + return nm_config_device_spec_match_list (device, (const char **) priv->ignore_carrier); +} + +/************************************************************************/ + +static void +merge_no_auto_default_state (NMConfig *config) +{ + NMConfigPrivate *priv = NM_CONFIG_GET_PRIVATE (config); + GPtrArray *updated; + char **list; + int i, j; + char *data; + + /* If the config already matches everything, we don't need to do anything else. */ + if (priv->no_auto_default && !g_strcmp0 (priv->no_auto_default[0], "*")) + return; + + updated = g_ptr_array_new (); + if (priv->no_auto_default) { + for (i = 0; priv->no_auto_default[i]; i++) + g_ptr_array_add (updated, priv->no_auto_default[i]); + g_free (priv->no_auto_default); + } + + if (g_file_get_contents (priv->no_auto_default_file, &data, NULL, NULL)) { + list = g_strsplit (data, "\n", -1); + for (i = 0; list[i]; i++) { + if (!*list[i]) + continue; + for (j = 0; j < updated->len; j++) { + if (!strcmp (list[i], updated->pdata[j])) + break; + } + if (j == updated->len) + g_ptr_array_add (updated, list[i]); + } + g_free (list); + g_free (data); + } + + g_ptr_array_add (updated, NULL); + priv->no_auto_default = (char **) g_ptr_array_free (updated, FALSE); +} + +gboolean +nm_config_get_ethernet_can_auto_default (NMConfig *config, NMConfigDevice *device) +{ + NMConfigPrivate *priv = NM_CONFIG_GET_PRIVATE (config); + + return !nm_config_device_spec_match_list (device, (const char **) priv->no_auto_default); +} + +void +nm_config_set_ethernet_no_auto_default (NMConfig *config, NMConfigDevice *device) +{ + NMConfigPrivate *priv = NM_CONFIG_GET_PRIVATE (config); + char *current; + GString *updated; + GError *error = NULL; + + if (!nm_config_get_ethernet_can_auto_default (config, device)) + return; + + updated = g_string_new (NULL); + if (g_file_get_contents (priv->no_auto_default_file, ¤t, NULL, NULL)) { + g_string_append (updated, current); + g_free (current); + if (updated->str[updated->len - 1] != '\n') + g_string_append_c (updated, '\n'); + } + + g_string_append (updated, nm_config_device_get_hwaddr (device)); + g_string_append_c (updated, '\n'); + + if (!g_file_set_contents (priv->no_auto_default_file, updated->str, updated->len, &error)) { + nm_log_warn (LOGD_SETTINGS, "Could not update no-auto-default.state file: %s", + error->message); + g_error_free (error); + } + + g_string_free (updated, TRUE); + + merge_no_auto_default_state (config); +} + +/************************************************************************/ + +static char *cli_config_path; +static char *cli_config_dir; +static char *cli_no_auto_default_file; +static char *cli_plugins; +static char *cli_connectivity_uri; +static int cli_connectivity_interval = -1; +static char *cli_connectivity_response; + +static GOptionEntry config_options[] = { + { "config", 0, 0, G_OPTION_ARG_FILENAME, &cli_config_path, N_("Config file location"), N_("/path/to/config.file") }, + { "config-dir", 0, 0, G_OPTION_ARG_FILENAME, &cli_config_dir, N_("Config directory location"), N_("/path/to/config/dir") }, + { "no-auto-default", 0, G_OPTION_FLAG_HIDDEN, G_OPTION_ARG_FILENAME, &cli_no_auto_default_file, "no-auto-default.state location", NULL }, + { "plugins", 0, 0, G_OPTION_ARG_STRING, &cli_plugins, N_("List of plugins separated by ','"), N_("plugin1,plugin2") }, + + /* These three are hidden for now, and should eventually just go away. */ + { "connectivity-uri", 0, G_OPTION_FLAG_HIDDEN, G_OPTION_ARG_STRING, &cli_connectivity_uri, N_("An http(s) address for checking internet connectivity"), "http://example.com" }, + { "connectivity-interval", 0, G_OPTION_FLAG_HIDDEN, G_OPTION_ARG_INT, &cli_connectivity_interval, N_("The interval between connectivity checks (in seconds)"), "60" }, + { "connectivity-response", 0, G_OPTION_FLAG_HIDDEN, G_OPTION_ARG_STRING, &cli_connectivity_response, N_("The expected start of the response"), N_("Bingo!") }, + {NULL} +}; +GOptionEntry * +nm_config_get_options (void) +{ + return config_options; +} + +/************************************************************************/ + +static gboolean +read_config (NMConfig *config, const char *path, GError **error) +{ + NMConfigPrivate *priv = NM_CONFIG_GET_PRIVATE (config); + GKeyFile *kf; + char **groups, **keys; + gsize ngroups, nkeys; + int g, k; + + if (g_file_test (path, G_FILE_TEST_EXISTS) == FALSE) { + g_set_error (error, G_KEY_FILE_ERROR, G_KEY_FILE_ERROR_NOT_FOUND, "file %s not found", path); + return FALSE; + } + + nm_log_dbg (LOGD_SETTINGS, "Reading config file '%s'", path); + + kf = g_key_file_new (); + g_key_file_set_list_separator (kf, ','); + if (!g_key_file_load_from_file (kf, path, G_KEY_FILE_NONE, error)) { + g_key_file_free (kf); + return FALSE; + } + + /* Override the current settings with the new ones */ + groups = g_key_file_get_groups (kf, &ngroups); + for (g = 0; groups[g]; g++) { + keys = g_key_file_get_keys (kf, groups[g], &nkeys, NULL); + if (!keys) + continue; + for (k = 0; keys[k]; k++) { + int len = strlen (keys[k]); + if (keys[k][len - 1] == '+') { + char *base_key = g_strndup (keys[k], len - 1); + const char *old_val = g_key_file_get_value (priv->keyfile, groups[g], base_key, NULL); + const char *new_val = g_key_file_get_value (kf, groups[g], keys[k], NULL); + + if (old_val && *old_val) { + char *combined = g_strconcat (old_val, ",", new_val, NULL); + + g_key_file_set_value (priv->keyfile, groups[g], base_key, combined); + g_free (combined); + } else + g_key_file_set_value (priv->keyfile, groups[g], base_key, new_val); + + g_free (base_key); + continue; + } + + g_key_file_set_value (priv->keyfile, groups[g], keys[k], + g_key_file_get_value (kf, groups[g], keys[k], NULL)); + } + } + g_key_file_free (kf); + + return TRUE; +} + +static gboolean +find_base_config (NMConfig *config, GError **error) +{ + NMConfigPrivate *priv = NM_CONFIG_GET_PRIVATE (config); + GError *my_error = NULL; + + /* Try a user-specified config file first */ + if (cli_config_path) { + /* Bad user-specific config file path is a hard error */ + if (read_config (config, cli_config_path, error)) { + priv->nm_conf_path = g_strdup (cli_config_path); + return TRUE; + } else + return FALSE; + } + + /* Even though we prefer NetworkManager.conf, we need to check the + * old nm-system-settings.conf first to preserve compat with older + * setups. In package managed systems dropping a NetworkManager.conf + * onto the system would make NM use it instead of nm-system-settings.conf, + * changing behavior during an upgrade. We don't want that. + */ + + /* Try deprecated nm-system-settings.conf first */ + if (read_config (config, NM_OLD_SYSTEM_CONF_FILE, &my_error)) { + priv->nm_conf_path = g_strdup (NM_OLD_SYSTEM_CONF_FILE); + return TRUE; + } + + if (!g_error_matches (my_error, G_KEY_FILE_ERROR, G_KEY_FILE_ERROR_NOT_FOUND)) { + g_warning ("Default config file %s invalid: %s\n", + NM_OLD_SYSTEM_CONF_FILE, + my_error->message); + } + g_clear_error (&my_error); + + /* Try the standard config file location next */ + if (read_config (config, NM_DEFAULT_SYSTEM_CONF_FILE, &my_error)) { + priv->nm_conf_path = g_strdup (NM_DEFAULT_SYSTEM_CONF_FILE); + return TRUE; + } + + if (!g_error_matches (my_error, G_KEY_FILE_ERROR, G_KEY_FILE_ERROR_NOT_FOUND)) { + g_warning ("Default config file %s invalid: %s\n", + NM_DEFAULT_SYSTEM_CONF_FILE, + my_error->message); + g_propagate_error (error, my_error); + return FALSE; + } + + /* If for some reason no config file exists, use the default + * config file path. + */ + priv->nm_conf_path = g_strdup (NM_DEFAULT_SYSTEM_CONF_FILE); + g_warning ("No config file found or given; using %s\n", + NM_DEFAULT_SYSTEM_CONF_FILE); + return TRUE; +} + +/************************************************************************/ + +NMConfig * +nm_config_get (void) +{ + g_assert (singleton); + return singleton; +} + +static int +sort_asciibetically (gconstpointer a, gconstpointer b) +{ + const char *s1 = *(const char **)a; + const char *s2 = *(const char **)b; + + return strcmp (s1, s2); +} + +/* call this function only once! */ +NMConfig * +nm_config_new (GError **error) +{ + NMConfigPrivate *priv = NULL; + GFile *dir; + GFileEnumerator *direnum; + GFileInfo *info; + GPtrArray *confs; + const char *name; + char *value; + int i; + GString *config_description; + + g_assert (!singleton); + singleton = NM_CONFIG (g_object_new (NM_TYPE_CONFIG, NULL)); + priv = NM_CONFIG_GET_PRIVATE (singleton); + + /* First read the base config file */ + if (!find_base_config (singleton, error)) { + g_object_unref (singleton); + singleton = NULL; + return NULL; + } + + /* Now read the overrides in the config dir */ + if (cli_config_dir) + priv->config_dir = g_strdup (cli_config_dir); + else + priv->config_dir = g_strdup (NM_DEFAULT_SYSTEM_CONF_DIR); + + confs = g_ptr_array_new_with_free_func (g_free); + config_description = g_string_new (priv->nm_conf_path); + dir = g_file_new_for_path (priv->config_dir); + direnum = g_file_enumerate_children (dir, G_FILE_ATTRIBUTE_STANDARD_NAME, 0, NULL, NULL); + if (direnum) { + while ((info = g_file_enumerator_next_file (direnum, NULL, NULL))) { + name = g_file_info_get_name (info); + if (g_str_has_suffix (name, ".conf")) { + g_ptr_array_add (confs, g_build_filename (priv->config_dir, name, NULL)); + if (confs->len == 1) + g_string_append (config_description, " and conf.d: "); + else + g_string_append (config_description, ", "); + g_string_append (config_description, name); + } + g_object_unref (info); + } + g_object_unref (direnum); + } + g_object_unref (dir); + + g_ptr_array_sort (confs, sort_asciibetically); + priv->config_description = g_string_free (config_description, FALSE); + for (i = 0; i < confs->len; i++) { + if (!read_config (singleton, confs->pdata[i], error)) { + g_object_unref (singleton); + singleton = NULL; + break; + } + } + g_ptr_array_unref (confs); + if (!singleton) + return FALSE; + + /* Handle no-auto-default key and state file */ + priv->no_auto_default = g_key_file_get_string_list (priv->keyfile, "main", "no-auto-default", NULL, NULL); + if (cli_no_auto_default_file) + priv->no_auto_default_file = g_strdup (cli_no_auto_default_file); + else + priv->no_auto_default_file = g_strdup (NM_NO_AUTO_DEFAULT_STATE_FILE); + merge_no_auto_default_state (singleton); + + /* Now let command-line options override the config files, and fill in priv. */ + if (cli_plugins && cli_plugins[0]) + g_key_file_set_value (priv->keyfile, "main", "plugins", cli_plugins); + priv->plugins = g_key_file_get_string_list (priv->keyfile, "main", "plugins", NULL, NULL); + + value = g_key_file_get_value (priv->keyfile, "main", "monitor-connection-files", NULL); + if (value) { + if (!strcmp (value, "true") || !strcmp (value, "yes") || !strcmp (value, "on")) + priv->monitor_connection_files = TRUE; + else if (!strcmp (value, "false") || !strcmp (value, "no") || !strcmp (value, "off")) + priv->monitor_connection_files = FALSE; + else { + g_warning ("Unrecognized value for main.monitor-connection-files: %s. Assuming 'false'", value); + priv->monitor_connection_files = FALSE; + } + g_free (value); + } else + priv->monitor_connection_files = FALSE; + + priv->dhcp_client = g_key_file_get_value (priv->keyfile, "main", "dhcp", NULL); + priv->dns_mode = g_key_file_get_value (priv->keyfile, "main", "dns", NULL); + + priv->log_level = g_key_file_get_value (priv->keyfile, "logging", "level", NULL); + priv->log_domains = g_key_file_get_value (priv->keyfile, "logging", "domains", NULL); + + priv->debug = g_key_file_get_value (priv->keyfile, "main", "debug", NULL); + + if (cli_connectivity_uri && cli_connectivity_uri[0]) + g_key_file_set_value (priv->keyfile, "connectivity", "uri", cli_connectivity_uri); + priv->connectivity_uri = g_key_file_get_value (priv->keyfile, "connectivity", "uri", NULL); + + if (cli_connectivity_interval >= 0) + g_key_file_set_integer (priv->keyfile, "connectivity", "interval", cli_connectivity_interval); + priv->connectivity_interval = g_key_file_get_integer (priv->keyfile, "connectivity", "interval", NULL); + + if (cli_connectivity_response && cli_connectivity_response[0]) + g_key_file_set_value (priv->keyfile, "connectivity", "response", cli_connectivity_response); + priv->connectivity_response = g_key_file_get_value (priv->keyfile, "connectivity", "response", NULL); + + priv->ignore_carrier = g_key_file_get_string_list (priv->keyfile, "main", "ignore-carrier", NULL, NULL); + + return singleton; +} + +static void +nm_config_init (NMConfig *config) +{ + NMConfigPrivate *priv = NM_CONFIG_GET_PRIVATE (config); + + priv->keyfile = g_key_file_new (); + g_key_file_set_list_separator (priv->keyfile, ','); + + priv->connectivity_interval = -1; +} + +static void +finalize (GObject *gobject) +{ + NMConfigPrivate *priv = NM_CONFIG_GET_PRIVATE (gobject); + + g_free (priv->nm_conf_path); + g_free (priv->config_dir); + g_free (priv->config_description); + g_free (priv->no_auto_default_file); + g_clear_pointer (&priv->keyfile, g_key_file_unref); + g_strfreev (priv->plugins); + g_free (priv->dhcp_client); + g_free (priv->dns_mode); + g_free (priv->log_level); + g_free (priv->log_domains); + g_free (priv->debug); + g_free (priv->connectivity_uri); + g_free (priv->connectivity_response); + g_strfreev (priv->no_auto_default); + g_strfreev (priv->ignore_carrier); + + singleton = NULL; + + g_clear_pointer (&cli_config_path, g_free); + g_clear_pointer (&cli_config_dir, g_free); + g_clear_pointer (&cli_no_auto_default_file, g_free); + g_clear_pointer (&cli_plugins, g_free); + g_clear_pointer (&cli_connectivity_uri, g_free); + g_clear_pointer (&cli_connectivity_response, g_free); + + G_OBJECT_CLASS (nm_config_parent_class)->finalize (gobject); +} + + +static void +nm_config_class_init (NMConfigClass *config_class) +{ + GObjectClass *object_class = G_OBJECT_CLASS (config_class); + + g_type_class_add_private (config_class, sizeof (NMConfigPrivate)); + object_class->finalize = finalize; +} + |