diff options
Diffstat (limited to 'system-settings/plugins/keyfile/plugin.c')
| -rw-r--r-- | system-settings/plugins/keyfile/plugin.c | 652 |
1 files changed, 652 insertions, 0 deletions
diff --git a/system-settings/plugins/keyfile/plugin.c b/system-settings/plugins/keyfile/plugin.c new file mode 100644 index 00000000..da6456d9 --- /dev/null +++ b/system-settings/plugins/keyfile/plugin.c @@ -0,0 +1,652 @@ +/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */ +/* NetworkManager system settings service - keyfile plugin + * + * 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) 2008 Novell, Inc. + * Copyright (C) 2008 - 2010 Red Hat, Inc. + */ + +#include <config.h> +#include <sys/stat.h> +#include <unistd.h> +#include <sys/types.h> +#include <netinet/ether.h> +#include <string.h> + +#include <gmodule.h> +#include <glib.h> +#include <glib/gstdio.h> +#include <gio/gio.h> + +#include <nm-connection.h> +#include <nm-setting.h> +#include <nm-setting-connection.h> + +#include "plugin.h" +#include "nm-system-config-interface.h" +#include "nm-keyfile-connection.h" +#include "writer.h" +#include "common.h" +#include "utils.h" + +#define CONF_FILE SYSCONFDIR "/NetworkManager/NetworkManager.conf" +#define OLD_CONF_FILE SYSCONFDIR "/NetworkManager/nm-system-settings.conf" + +static char *plugin_get_hostname (SCPluginKeyfile *plugin); +static void system_config_interface_init (NMSystemConfigInterface *system_config_interface_class); + +G_DEFINE_TYPE_EXTENDED (SCPluginKeyfile, sc_plugin_keyfile, G_TYPE_OBJECT, 0, + G_IMPLEMENT_INTERFACE (NM_TYPE_SYSTEM_CONFIG_INTERFACE, + system_config_interface_init)) + +#define SC_PLUGIN_KEYFILE_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), SC_TYPE_PLUGIN_KEYFILE, SCPluginKeyfilePrivate)) + +typedef struct { + GHashTable *hash; + + GFileMonitor *monitor; + guint monitor_id; + + const char *conf_file; + GFileMonitor *conf_file_monitor; + guint conf_file_monitor_id; + + char *hostname; + + gboolean disposed; +} SCPluginKeyfilePrivate; + +static void +read_connections (NMSystemConfigInterface *config) +{ + SCPluginKeyfilePrivate *priv = SC_PLUGIN_KEYFILE_GET_PRIVATE (config); + GDir *dir; + GError *error = NULL; + const char *item; + + dir = g_dir_open (KEYFILE_DIR, 0, &error); + if (!dir) { + PLUGIN_WARN (KEYFILE_PLUGIN_NAME, "Cannot read directory '%s': (%d) %s", + KEYFILE_DIR, + error ? error->code : -1, + error && error->message ? error->message : "(unknown)"); + g_clear_error (&error); + return; + } + + while ((item = g_dir_read_name (dir))) { + NMKeyfileConnection *connection; + char *full_path; + + if (utils_should_ignore_file (item)) + continue; + + full_path = g_build_filename (KEYFILE_DIR, item, NULL); + PLUGIN_PRINT (KEYFILE_PLUGIN_NAME, "parsing %s ... ", item); + connection = nm_keyfile_connection_new (full_path, &error); + if (connection) { + NMSettingConnection *s_con; + const char *cid; + + s_con = (NMSettingConnection *) nm_connection_get_setting (NM_CONNECTION (connection), NM_TYPE_SETTING_CONNECTION); + g_assert (s_con); + + cid = nm_setting_connection_get_id (s_con); + g_assert (cid); + + g_hash_table_insert (priv->hash, + (gpointer) nm_keyfile_connection_get_filename (connection), + connection); + + PLUGIN_PRINT (KEYFILE_PLUGIN_NAME, " read connection '%s'", cid); + } else { + PLUGIN_PRINT (KEYFILE_PLUGIN_NAME, " error: %s", + (error && error->message) ? error->message : "(unknown)"); + g_clear_error (&error); + } + g_free (full_path); + } + g_dir_close (dir); +} + +typedef struct { + const char *uuid; + NMKeyfileConnection *found; +} FindByUUIDInfo; + +static void +find_by_uuid (gpointer key, gpointer data, gpointer user_data) +{ + NMKeyfileConnection *keyfile = NM_KEYFILE_CONNECTION (data); + FindByUUIDInfo *info = user_data; + NMSettingConnection *s_con; + const char *uuid; + + if (info->found) + return; + + s_con = (NMSettingConnection *) nm_connection_get_setting (NM_CONNECTION (keyfile), NM_TYPE_SETTING_CONNECTION); + + uuid = s_con ? nm_setting_connection_get_uuid (s_con) : NULL; + if (uuid && !strcmp (info->uuid, uuid)) + info->found = keyfile; +} + +static void +update_connection_settings (NMKeyfileConnection *orig, + NMKeyfileConnection *new) +{ + GError *error = NULL; + + if (!nm_sysconfig_connection_update (NM_SYSCONFIG_CONNECTION (orig), + NM_CONNECTION (new), + TRUE, + &error)) { + g_warning ("%s: '%s' / '%s' invalid: %d", + __func__, + error ? g_type_name (nm_connection_lookup_setting_type_by_quark (error->domain)) : "(none)", + (error && error->message) ? error->message : "(none)", + error ? error->code : -1); + g_clear_error (&error); + + g_signal_emit_by_name (orig, "removed"); + } +} + +/* Monitoring */ + +static void +remove_connection (SCPluginKeyfile *self, + NMKeyfileConnection *connection, + const char *name) +{ + g_return_if_fail (connection != NULL); + g_return_if_fail (name != NULL); + + /* Removing from the hash table should drop the last reference */ + g_object_ref (connection); + g_hash_table_remove (SC_PLUGIN_KEYFILE_GET_PRIVATE (self)->hash, name); + g_signal_emit_by_name (connection, "removed"); + g_object_unref (connection); +} + +static void +dir_changed (GFileMonitor *monitor, + GFile *file, + GFile *other_file, + GFileMonitorEvent event_type, + gpointer user_data) +{ + NMSystemConfigInterface *config = NM_SYSTEM_CONFIG_INTERFACE (user_data); + SCPluginKeyfilePrivate *priv = SC_PLUGIN_KEYFILE_GET_PRIVATE (config); + char *name; + NMKeyfileConnection *connection; + GError *error = NULL; + + name = g_file_get_path (file); + if (utils_should_ignore_file (name)) { + g_free (name); + return; + } + + connection = g_hash_table_lookup (priv->hash, name); + + switch (event_type) { + case G_FILE_MONITOR_EVENT_DELETED: + if (connection) { + PLUGIN_PRINT (KEYFILE_PLUGIN_NAME, "removed %s.", name); + remove_connection (SC_PLUGIN_KEYFILE (config), connection, name); + } + break; + case G_FILE_MONITOR_EVENT_CREATED: + case G_FILE_MONITOR_EVENT_CHANGES_DONE_HINT: + if (connection) { + /* Update */ + NMKeyfileConnection *tmp; + + tmp = nm_keyfile_connection_new (name, &error); + if (tmp) { + if (!nm_connection_compare (NM_CONNECTION (connection), + NM_CONNECTION (tmp), + NM_SETTING_COMPARE_FLAG_EXACT)) { + PLUGIN_PRINT (KEYFILE_PLUGIN_NAME, "updating %s", name); + update_connection_settings (connection, tmp); + } + g_object_unref (tmp); + } else { + /* Error; remove the connection */ + PLUGIN_PRINT (KEYFILE_PLUGIN_NAME, " error: %s", + (error && error->message) ? error->message : "(unknown)"); + g_clear_error (&error); + remove_connection (SC_PLUGIN_KEYFILE (config), connection, name); + } + } else { + PLUGIN_PRINT (KEYFILE_PLUGIN_NAME, "updating %s", name); + + /* New */ + connection = nm_keyfile_connection_new (name, &error); + if (connection) { + NMSettingConnection *s_con; + const char *connection_uuid; + NMKeyfileConnection *found = NULL; + + /* Connection renames will show up as different files but with + * the same UUID. Try to find the original connection. + */ + s_con = (NMSettingConnection *) nm_connection_get_setting (NM_CONNECTION (connection), NM_TYPE_SETTING_CONNECTION); + connection_uuid = s_con ? nm_setting_connection_get_uuid (s_con) : NULL; + + if (connection_uuid) { + FindByUUIDInfo info = { .found = NULL, .uuid = connection_uuid }; + + g_hash_table_foreach (priv->hash, find_by_uuid, &info); + found = info.found; + } + + /* A connection rename is treated just like an update except + * there's a bit more housekeeping with the hash table. + */ + if (found) { + const char *old_filename = nm_keyfile_connection_get_filename (connection); + + /* Removing from the hash table should drop the last reference, + * but of course we want to keep the connection around. + */ + g_object_ref (found); + g_hash_table_remove (priv->hash, old_filename); + + /* Updating settings should update the NMKeyfileConnection's + * filename property too. + */ + update_connection_settings (found, connection); + + /* Re-insert the connection back into the hash with the new filename */ + g_hash_table_insert (priv->hash, + (gpointer) nm_keyfile_connection_get_filename (found), + found); + + /* Get rid of the temporary connection */ + g_object_unref (connection); + } else { + g_hash_table_insert (priv->hash, + (gpointer) nm_keyfile_connection_get_filename (connection), + connection); + g_signal_emit_by_name (config, NM_SYSTEM_CONFIG_INTERFACE_CONNECTION_ADDED, connection); + } + } else { + PLUGIN_PRINT (KEYFILE_PLUGIN_NAME, " error: %s", + (error && error->message) ? error->message : "(unknown)"); + g_clear_error (&error); + } + } + break; + default: + break; + } + + g_free (name); +} + +static void +conf_file_changed (GFileMonitor *monitor, + GFile *file, + GFile *other_file, + GFileMonitorEvent event_type, + gpointer data) +{ + SCPluginKeyfile *self = SC_PLUGIN_KEYFILE (data); + SCPluginKeyfilePrivate *priv = SC_PLUGIN_KEYFILE_GET_PRIVATE (self); + char *tmp; + + switch (event_type) { + case G_FILE_MONITOR_EVENT_DELETED: + case G_FILE_MONITOR_EVENT_CREATED: + case G_FILE_MONITOR_EVENT_CHANGES_DONE_HINT: + g_signal_emit_by_name (self, NM_SYSTEM_CONFIG_INTERFACE_UNMANAGED_SPECS_CHANGED); + + /* hostname */ + tmp = plugin_get_hostname (self); + if ((tmp && !priv->hostname) + || (!tmp && priv->hostname) + || (priv->hostname && tmp && strcmp (priv->hostname, tmp))) { + + g_free (priv->hostname); + priv->hostname = tmp; + tmp = NULL; + g_object_notify (G_OBJECT (self), NM_SYSTEM_CONFIG_INTERFACE_HOSTNAME); + } + + g_free (tmp); + + break; + default: + break; + } +} + +static void +setup_monitoring (NMSystemConfigInterface *config) +{ + SCPluginKeyfilePrivate *priv = SC_PLUGIN_KEYFILE_GET_PRIVATE (config); + GFile *file; + GFileMonitor *monitor; + + priv->hash = g_hash_table_new_full (g_str_hash, g_str_equal, NULL, g_object_unref); + + file = g_file_new_for_path (KEYFILE_DIR); + monitor = g_file_monitor_directory (file, G_FILE_MONITOR_NONE, NULL, NULL); + g_object_unref (file); + + if (monitor) { + priv->monitor_id = g_signal_connect (monitor, "changed", G_CALLBACK (dir_changed), config); + priv->monitor = monitor; + } + + file = g_file_new_for_path (priv->conf_file); + monitor = g_file_monitor_file (file, G_FILE_MONITOR_NONE, NULL, NULL); + g_object_unref (file); + + if (monitor) { + priv->conf_file_monitor_id = g_signal_connect (monitor, "changed", G_CALLBACK (conf_file_changed), config); + priv->conf_file_monitor = monitor; + } +} + +static void +hash_to_slist (gpointer key, gpointer value, gpointer user_data) +{ + GSList **list = (GSList **) user_data; + + *list = g_slist_prepend (*list, value); +} + +/* Plugin */ + +static GSList * +get_connections (NMSystemConfigInterface *config) +{ + SCPluginKeyfilePrivate *priv = SC_PLUGIN_KEYFILE_GET_PRIVATE (config); + GSList *connections = NULL; + + if (!priv->hash) { + setup_monitoring (config); + read_connections (config); + } + + g_hash_table_foreach (priv->hash, hash_to_slist, &connections); + + return connections; +} + +static gboolean +add_connection (NMSystemConfigInterface *config, + NMConnection *connection, + GError **error) +{ + return write_connection (connection, KEYFILE_DIR, 0, 0, NULL, error); +} + +static GSList * +get_unmanaged_specs (NMSystemConfigInterface *config) +{ + SCPluginKeyfilePrivate *priv = SC_PLUGIN_KEYFILE_GET_PRIVATE (config); + GKeyFile *key_file; + GSList *specs = NULL; + GError *error = NULL; + + key_file = g_key_file_new (); + if (g_key_file_load_from_file (key_file, priv->conf_file, G_KEY_FILE_NONE, &error)) { + char *str; + + str = g_key_file_get_value (key_file, "keyfile", "unmanaged-devices", NULL); + if (str) { + char **udis; + int i; + + udis = g_strsplit (str, ";", -1); + g_free (str); + + for (i = 0; udis[i] != NULL; i++) { + /* Verify unmanaged specification and add it to the list */ + if (strlen (udis[i]) > 4 && !strncmp (udis[i], "mac:", 4) && ether_aton (udis[i] + 4)) { + char *p = udis[i]; + + /* To accept uppercase MACs in configuration file, we have to convert values to lowercase here. + * Unmanaged MACs in specs are always in lowercase. */ + while (*p) { + *p = g_ascii_tolower (*p); + p++; + } + specs = g_slist_append (specs, udis[i]); + } else { + g_warning ("Error in file '%s': invalid unmanaged-devices entry: '%s'", priv->conf_file, udis[i]); + g_free (udis[i]); + } + } + + g_free (udis); /* Yes, g_free, not g_strfreev because we need the strings in the list */ + } + } else { + g_warning ("Error parsing file '%s': %s", priv->conf_file, error->message); + g_error_free (error); + } + + g_key_file_free (key_file); + + return specs; +} + +static char * +plugin_get_hostname (SCPluginKeyfile *plugin) +{ + SCPluginKeyfilePrivate *priv = SC_PLUGIN_KEYFILE_GET_PRIVATE (plugin); + GKeyFile *key_file; + char *hostname = NULL; + GError *error = NULL; + + key_file = g_key_file_new (); + if (g_key_file_load_from_file (key_file, priv->conf_file, G_KEY_FILE_NONE, &error)) + hostname = g_key_file_get_value (key_file, "keyfile", "hostname", NULL); + else { + g_warning ("Error parsing file '%s': %s", priv->conf_file, error->message); + g_error_free (error); + } + + g_key_file_free (key_file); + + return hostname; +} + +static gboolean +plugin_set_hostname (SCPluginKeyfile *plugin, const char *hostname) +{ + SCPluginKeyfilePrivate *priv = SC_PLUGIN_KEYFILE_GET_PRIVATE (plugin); + GKeyFile *key_file; + GError *error = NULL; + gboolean result = FALSE; + + key_file = g_key_file_new (); + if (g_key_file_load_from_file (key_file, priv->conf_file, G_KEY_FILE_NONE, &error)) { + char *data; + gsize len; + + g_key_file_set_string (key_file, "keyfile", "hostname", hostname); + + data = g_key_file_to_data (key_file, &len, &error); + if (data) { + g_file_set_contents (priv->conf_file, data, len, &error); + g_free (data); + + g_free (priv->hostname); + priv->hostname = hostname ? g_strdup (hostname) : NULL; + result = TRUE; + } + + if (error) { + g_warning ("Error saving hostname: %s", error->message); + g_error_free (error); + } + } else { + g_warning ("Error parsing file '%s': %s", priv->conf_file, error->message); + g_error_free (error); + } + + g_key_file_free (key_file); + + return result; +} + +/* GObject */ + +static void +sc_plugin_keyfile_init (SCPluginKeyfile *plugin) +{ + SCPluginKeyfilePrivate *priv = SC_PLUGIN_KEYFILE_GET_PRIVATE (plugin); + + if (g_file_test (CONF_FILE, G_FILE_TEST_EXISTS)) + priv->conf_file = CONF_FILE; + else + priv->conf_file = OLD_CONF_FILE; + + priv->hostname = plugin_get_hostname (plugin); +} + +static void +get_property (GObject *object, guint prop_id, + GValue *value, GParamSpec *pspec) +{ + switch (prop_id) { + case NM_SYSTEM_CONFIG_INTERFACE_PROP_NAME: + g_value_set_string (value, KEYFILE_PLUGIN_NAME); + break; + case NM_SYSTEM_CONFIG_INTERFACE_PROP_INFO: + g_value_set_string (value, KEYFILE_PLUGIN_INFO); + break; + case NM_SYSTEM_CONFIG_INTERFACE_PROP_CAPABILITIES: + g_value_set_uint (value, NM_SYSTEM_CONFIG_INTERFACE_CAP_MODIFY_CONNECTIONS | + NM_SYSTEM_CONFIG_INTERFACE_CAP_MODIFY_HOSTNAME); + break; + case NM_SYSTEM_CONFIG_INTERFACE_PROP_HOSTNAME: + g_value_set_string (value, SC_PLUGIN_KEYFILE_GET_PRIVATE (object)->hostname); + break; + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} + +static void +set_property (GObject *object, guint prop_id, + const GValue *value, GParamSpec *pspec) +{ + const char *hostname; + + switch (prop_id) { + case NM_SYSTEM_CONFIG_INTERFACE_PROP_HOSTNAME: + hostname = g_value_get_string (value); + if (hostname && strlen (hostname) < 1) + hostname = NULL; + plugin_set_hostname (SC_PLUGIN_KEYFILE (object), hostname); + break; + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} + +static void +dispose (GObject *object) +{ + SCPluginKeyfilePrivate *priv = SC_PLUGIN_KEYFILE_GET_PRIVATE (object); + + if (priv->disposed) + return; + + priv->disposed = TRUE; + + if (priv->monitor) { + if (priv->monitor_id) + g_signal_handler_disconnect (priv->monitor, priv->monitor_id); + + g_file_monitor_cancel (priv->monitor); + g_object_unref (priv->monitor); + } + + if (priv->conf_file_monitor) { + if (priv->conf_file_monitor_id) + g_signal_handler_disconnect (priv->conf_file_monitor, priv->conf_file_monitor_id); + + g_file_monitor_cancel (priv->conf_file_monitor); + g_object_unref (priv->conf_file_monitor); + } + + g_free (priv->hostname); + + if (priv->hash) + g_hash_table_destroy (priv->hash); + + G_OBJECT_CLASS (sc_plugin_keyfile_parent_class)->dispose (object); +} + +static void +sc_plugin_keyfile_class_init (SCPluginKeyfileClass *req_class) +{ + GObjectClass *object_class = G_OBJECT_CLASS (req_class); + + g_type_class_add_private (req_class, sizeof (SCPluginKeyfilePrivate)); + + object_class->dispose = dispose; + object_class->get_property = get_property; + object_class->set_property = set_property; + + g_object_class_override_property (object_class, + NM_SYSTEM_CONFIG_INTERFACE_PROP_NAME, + NM_SYSTEM_CONFIG_INTERFACE_NAME); + + g_object_class_override_property (object_class, + NM_SYSTEM_CONFIG_INTERFACE_PROP_INFO, + NM_SYSTEM_CONFIG_INTERFACE_INFO); + + g_object_class_override_property (object_class, + NM_SYSTEM_CONFIG_INTERFACE_PROP_CAPABILITIES, + NM_SYSTEM_CONFIG_INTERFACE_CAPABILITIES); + + g_object_class_override_property (object_class, + NM_SYSTEM_CONFIG_INTERFACE_PROP_HOSTNAME, + NM_SYSTEM_CONFIG_INTERFACE_HOSTNAME); +} + +static void +system_config_interface_init (NMSystemConfigInterface *system_config_interface_class) +{ + /* interface implementation */ + system_config_interface_class->get_connections = get_connections; + system_config_interface_class->add_connection = add_connection; + system_config_interface_class->get_unmanaged_specs = get_unmanaged_specs; +} + +G_MODULE_EXPORT GObject * +nm_system_config_factory (void) +{ + static SCPluginKeyfile *singleton = NULL; + + if (!singleton) + singleton = SC_PLUGIN_KEYFILE (g_object_new (SC_TYPE_PLUGIN_KEYFILE, NULL)); + else + g_object_ref (singleton); + + return G_OBJECT (singleton); +} |