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NetworkManager/src/settings/nm-settings-connection.c
Dan Williams b5170903c0 settings: correctly handle connection deletion after unsaved and monitor-connection-files 
Plugins that could save connections to disk previously depended on inotify
events from the kernel to know when to signal connection removal; that is
in response to a 'delete' request they would unlink the backing filesystem
resources, get the inotify signal, and cause NM_SETTINGS_CONNECTION_REMOVED
to be emitted.

Unsaved connections don't have any backing resources, so they would never
get the signal emitted, and NMSettings would never forget about them.

Also, when monitor-connection-files=false in the configuration, obviously
the inotify signals will never come in because they aren't set up.

Given that we can no longer rely on inotify, it's best to just explicitly
send out the NM_SETTINGS_CONNECTION_REMOVED signal whenever a connection
is deleted via the D-Bus interface or internally.
2013-08-09 00:54:58 -05:00

2004 lines
66 KiB
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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
/* NetworkManager system settings service
*
* 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.
*
* (C) Copyright 2008 Novell, Inc.
* (C) Copyright 2008 - 2013 Red Hat, Inc.
*/
#include "config.h"
#include <string.h>
#include <netinet/ether.h>
#include <NetworkManager.h>
#include <dbus/dbus-glib-lowlevel.h>
#include <nm-setting-connection.h>
#include <nm-setting-vpn.h>
#include <nm-setting-wireless.h>
#include <nm-utils.h>
#include "nm-settings-connection.h"
#include "nm-session-monitor.h"
#include "nm-dbus-manager.h"
#include "nm-settings-error.h"
#include "nm-dbus-glib-types.h"
#include "nm-logging.h"
#include "nm-manager-auth.h"
#include "nm-agent-manager.h"
#include "NetworkManagerUtils.h"
#include "nm-properties-changed-signal.h"
#define SETTINGS_TIMESTAMPS_FILE NMSTATEDIR "/timestamps"
#define SETTINGS_SEEN_BSSIDS_FILE NMSTATEDIR "/seen-bssids"
static void impl_settings_connection_get_settings (NMSettingsConnection *connection,
DBusGMethodInvocation *context);
static void impl_settings_connection_update (NMSettingsConnection *connection,
GHashTable *new_settings,
DBusGMethodInvocation *context);
static void impl_settings_connection_update_unsaved (NMSettingsConnection *connection,
GHashTable *new_settings,
DBusGMethodInvocation *context);
static void impl_settings_connection_save (NMSettingsConnection *connection,
DBusGMethodInvocation *context);
static void impl_settings_connection_delete (NMSettingsConnection *connection,
DBusGMethodInvocation *context);
static void impl_settings_connection_get_secrets (NMSettingsConnection *connection,
const gchar *setting_name,
DBusGMethodInvocation *context);
#include "nm-settings-connection-glue.h"
G_DEFINE_TYPE (NMSettingsConnection, nm_settings_connection, NM_TYPE_CONNECTION)
#define NM_SETTINGS_CONNECTION_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), \
NM_TYPE_SETTINGS_CONNECTION, \
NMSettingsConnectionPrivate))
enum {
PROP_0 = 0,
PROP_VISIBLE,
PROP_UNSAVED,
};
enum {
UPDATED,
REMOVED,
LAST_SIGNAL
};
static guint signals[LAST_SIGNAL] = { 0 };
typedef struct {
gboolean disposed;
NMAgentManager *agent_mgr;
NMSessionMonitor *session_monitor;
guint session_changed_id;
/* TRUE if the connection has not yet been saved to disk,
* or it it contains changes that have not been saved to disk.
*/
gboolean unsaved;
guint updated_idle_id;
GSList *pending_auths; /* List of pending authentication requests */
gboolean visible; /* Is this connection is visible by some session? */
GSList *reqs; /* in-progress secrets requests */
/* Caches secrets from on-disk connections; were they not cached any
* call to nm_connection_clear_secrets() wipes them out and we'd have
* to re-read them from disk which defeats the purpose of having the
* connection in-memory at all.
*/
NMConnection *system_secrets;
/* Caches secrets from agents during the activation process; if new system
* secrets are returned from an agent, they get written out to disk,
* triggering a re-read of the connection, which reads only system
* secrets, and would wipe out any agent-owned or not-saved secrets the
* agent also returned.
*/
NMConnection *agent_secrets;
guint64 timestamp; /* Up-to-date timestamp of connection use */
gboolean timestamp_set;
GHashTable *seen_bssids; /* Up-to-date BSSIDs that's been seen for the connection */
} NMSettingsConnectionPrivate;
/**************************************************************/
/* Return TRUE to continue, FALSE to stop */
typedef gboolean (*ForEachSecretFunc) (GHashTableIter *iter,
NMSettingSecretFlags flags,
gpointer user_data);
static void
for_each_secret (NMConnection *connection,
GHashTable *secrets,
ForEachSecretFunc callback,
gpointer callback_data)
{
GHashTableIter iter;
const char *setting_name;
GHashTable *setting_hash;
/* This function, given a hash of hashes representing new secrets of
* an NMConnection, walks through each toplevel hash (which represents a
* NMSetting), and for each setting, walks through that setting hash's
* properties. For each property that's a secret, it will check that
* secret's flags in the backing NMConnection object, and call a supplied
* callback.
*
* The one complexity is that the VPN setting's 'secrets' property is
* *also* a hash table (since the key/value pairs are arbitrary and known
* only to the VPN plugin itself). That means we have three levels of
* GHashTables that we potentially have to traverse here. When we hit the
* VPN setting's 'secrets' property, we special-case that and iterate over
* each item in that 'secrets' hash table, calling the supplied callback
* each time.
*/
/* Walk through the list of setting hashes */
g_hash_table_iter_init (&iter, secrets);
while (g_hash_table_iter_next (&iter, (gpointer) &setting_name, (gpointer) &setting_hash)) {
NMSetting *setting;
GHashTableIter secret_iter;
const char *secret_name;
GValue *val;
/* Get the actual NMSetting from the connection so we can get secret flags
* from the connection data, since flags aren't secrets. What we're
* iterating here is just the secrets, not a whole connection.
*/
setting = nm_connection_get_setting_by_name (connection, setting_name);
if (setting == NULL)
continue;
/* Walk through the list of keys in each setting hash */
g_hash_table_iter_init (&secret_iter, setting_hash);
while (g_hash_table_iter_next (&secret_iter, (gpointer) &secret_name, (gpointer) &val)) {
NMSettingSecretFlags secret_flags = NM_SETTING_SECRET_FLAG_NONE;
/* VPN secrets need slightly different treatment here since the
* "secrets" property is actually a hash table of secrets.
*/
if (NM_IS_SETTING_VPN (setting) && (g_strcmp0 (secret_name, NM_SETTING_VPN_SECRETS) == 0)) {
GHashTableIter vpn_secrets_iter;
/* Iterate through each secret from the VPN hash in the overall secrets hash */
g_hash_table_iter_init (&vpn_secrets_iter, g_value_get_boxed (val));
while (g_hash_table_iter_next (&vpn_secrets_iter, (gpointer) &secret_name, NULL)) {
secret_flags = NM_SETTING_SECRET_FLAG_NONE;
nm_setting_get_secret_flags (setting, secret_name, &secret_flags, NULL);
if (callback (&vpn_secrets_iter, secret_flags, callback_data) == FALSE)
return;
}
} else {
nm_setting_get_secret_flags (setting, secret_name, &secret_flags, NULL);
if (callback (&secret_iter, secret_flags, callback_data) == FALSE)
return;
}
}
}
}
/**************************************************************/
static void
set_visible (NMSettingsConnection *self, gboolean new_visible)
{
NMSettingsConnectionPrivate *priv = NM_SETTINGS_CONNECTION_GET_PRIVATE (self);
if (new_visible == priv->visible)
return;
priv->visible = new_visible;
g_object_notify (G_OBJECT (self), NM_SETTINGS_CONNECTION_VISIBLE);
}
gboolean
nm_settings_connection_is_visible (NMSettingsConnection *self)
{
g_return_val_if_fail (NM_IS_SETTINGS_CONNECTION (self), FALSE);
return NM_SETTINGS_CONNECTION_GET_PRIVATE (self)->visible;
}
void
nm_settings_connection_recheck_visibility (NMSettingsConnection *self)
{
NMSettingsConnectionPrivate *priv;
NMSettingConnection *s_con;
guint32 num, i;
g_return_if_fail (NM_IS_SETTINGS_CONNECTION (self));
priv = NM_SETTINGS_CONNECTION_GET_PRIVATE (self);
s_con = nm_connection_get_setting_connection (NM_CONNECTION (self));
g_assert (s_con);
/* Check every user in the ACL for a session */
num = nm_setting_connection_get_num_permissions (s_con);
if (num == 0) {
/* Visible to all */
set_visible (self, TRUE);
return;
}
for (i = 0; i < num; i++) {
const char *puser;
if (nm_setting_connection_get_permission (s_con, i, NULL, &puser, NULL)) {
if (nm_session_monitor_user_has_session (priv->session_monitor, puser, NULL, NULL)) {
set_visible (self, TRUE);
return;
}
}
}
set_visible (self, FALSE);
}
static void
session_changed_cb (NMSessionMonitor *self, gpointer user_data)
{
nm_settings_connection_recheck_visibility (NM_SETTINGS_CONNECTION (user_data));
}
/**************************************************************/
/* Return TRUE if any active user in the connection's ACL has the given
* permission without having to authorize for it via PolicyKit. Connections
* visible to everyone automatically pass the check.
*/
gboolean
nm_settings_connection_check_permission (NMSettingsConnection *self,
const char *permission)
{
NMSettingsConnectionPrivate *priv;
NMSettingConnection *s_con;
guint32 num, i;
const char *puser;
g_return_val_if_fail (NM_IS_SETTINGS_CONNECTION (self), FALSE);
priv = NM_SETTINGS_CONNECTION_GET_PRIVATE (self);
if (priv->visible == FALSE)
return FALSE;
s_con = nm_connection_get_setting_connection (NM_CONNECTION (self));
g_assert (s_con);
/* Check every user in the ACL for a session */
num = nm_setting_connection_get_num_permissions (s_con);
if (num == 0) {
/* Visible to all so it's OK to auto-activate */
return TRUE;
}
for (i = 0; i < num; i++) {
/* For each user get their secret agent and check if that agent has the
* required permission.
*
* FIXME: what if the user isn't running an agent? PolKit needs a bus
* name or a PID but if the user isn't running an agent they won't have
* either.
*/
if (nm_setting_connection_get_permission (s_con, i, NULL, &puser, NULL)) {
NMSecretAgent *agent = nm_agent_manager_get_agent_by_user (priv->agent_mgr, puser);
if (agent && nm_secret_agent_has_permission (agent, permission))
return TRUE;
}
}
return FALSE;
}
/**************************************************************/
static gboolean
secrets_filter_cb (NMSetting *setting,
const char *secret,
NMSettingSecretFlags flags,
gpointer user_data)
{
NMSettingSecretFlags filter_flags = GPOINTER_TO_UINT (user_data);
/* Returns TRUE to remove the secret */
/* Can't use bitops with SECRET_FLAG_NONE so handle that specifically */
if ( (flags == NM_SETTING_SECRET_FLAG_NONE)
&& (filter_flags == NM_SETTING_SECRET_FLAG_NONE))
return FALSE;
/* Otherwise if the secret has at least one of the desired flags keep it */
return (flags & filter_flags) ? FALSE : TRUE;
}
static void
update_system_secrets_cache (NMSettingsConnection *self)
{
NMSettingsConnectionPrivate *priv = NM_SETTINGS_CONNECTION_GET_PRIVATE (self);
if (priv->system_secrets)
g_object_unref (priv->system_secrets);
priv->system_secrets = nm_connection_duplicate (NM_CONNECTION (self));
/* Clear out non-system-owned and not-saved secrets */
nm_connection_clear_secrets_with_flags (priv->system_secrets,
secrets_filter_cb,
GUINT_TO_POINTER (NM_SETTING_SECRET_FLAG_NONE));
}
static void
update_agent_secrets_cache (NMSettingsConnection *self, NMConnection *new)
{
NMSettingsConnectionPrivate *priv = NM_SETTINGS_CONNECTION_GET_PRIVATE (self);
NMSettingSecretFlags filter_flags = NM_SETTING_SECRET_FLAG_NOT_SAVED | NM_SETTING_SECRET_FLAG_AGENT_OWNED;
if (priv->agent_secrets)
g_object_unref (priv->agent_secrets);
priv->agent_secrets = nm_connection_duplicate (new ? new : NM_CONNECTION (self));
/* Clear out non-system-owned secrets */
nm_connection_clear_secrets_with_flags (priv->agent_secrets,
secrets_filter_cb,
GUINT_TO_POINTER (filter_flags));
}
static void
secrets_cleared_cb (NMSettingsConnection *self)
{
NMSettingsConnectionPrivate *priv = NM_SETTINGS_CONNECTION_GET_PRIVATE (self);
/* Clear agent secrets when connection's secrets are cleared since agent
* secrets are transient.
*/
if (priv->agent_secrets)
g_object_unref (priv->agent_secrets);
priv->agent_secrets = NULL;
}
static gboolean
emit_updated (NMSettingsConnection *self)
{
NM_SETTINGS_CONNECTION_GET_PRIVATE (self)->updated_idle_id = 0;
g_signal_emit (self, signals[UPDATED], 0);
return FALSE;
}
static void
set_unsaved (NMSettingsConnection *self, gboolean now_unsaved)
{
NMSettingsConnectionPrivate *priv = NM_SETTINGS_CONNECTION_GET_PRIVATE (self);
if (priv->unsaved != now_unsaved) {
priv->unsaved = now_unsaved;
g_object_notify (G_OBJECT (self), NM_SETTINGS_CONNECTION_UNSAVED);
}
}
static void
changed_cb (NMSettingsConnection *self, gpointer user_data)
{
gboolean update_unsaved = !!user_data;
NMSettingsConnectionPrivate *priv = NM_SETTINGS_CONNECTION_GET_PRIVATE (self);
if (update_unsaved)
set_unsaved (self, TRUE);
if (priv->updated_idle_id == 0)
priv->updated_idle_id = g_idle_add ((GSourceFunc) emit_updated, self);
}
/* Update the settings of this connection to match that of 'new_connection',
* taking care to make a private copy of secrets.
*/
gboolean
nm_settings_connection_replace_settings (NMSettingsConnection *self,
NMConnection *new_connection,
gboolean update_unsaved,
GError **error)
{
NMSettingsConnectionPrivate *priv;
GHashTable *hash = NULL;
gboolean success = FALSE;
g_return_val_if_fail (NM_IS_SETTINGS_CONNECTION (self), FALSE);
g_return_val_if_fail (NM_IS_CONNECTION (new_connection), FALSE);
priv = NM_SETTINGS_CONNECTION_GET_PRIVATE (self);
/* Do nothing if there's nothing to update */
if (nm_connection_compare (NM_CONNECTION (self),
new_connection,
NM_SETTING_COMPARE_FLAG_EXACT)) {
return TRUE;
}
/* Disconnect the changed signal to ensure we don't set Unsaved when
* it's not required.
*/
g_signal_handlers_block_by_func (self, G_CALLBACK (changed_cb), GUINT_TO_POINTER (TRUE));
if (nm_connection_replace_settings_from_connection (NM_CONNECTION (self),
new_connection,
error)) {
/* Cache the just-updated system secrets in case something calls
* nm_connection_clear_secrets() and clears them.
*/
update_system_secrets_cache (self);
success = TRUE;
/* Add agent and always-ask secrets back; they won't necessarily be
* in the replacement connection data if it was eg reread from disk.
*/
if (priv->agent_secrets) {
hash = nm_connection_to_hash (priv->agent_secrets, NM_SETTING_HASH_FLAG_ONLY_SECRETS);
if (hash) {
success = nm_connection_update_secrets (NM_CONNECTION (self), NULL, hash, error);
g_hash_table_destroy (hash);
}
}
nm_settings_connection_recheck_visibility (self);
/* Manually emit changed signal since we disconnected the handler, but
* only update Unsaved if the caller wanted us to.
*/
changed_cb (self, GUINT_TO_POINTER (update_unsaved));
}
g_signal_handlers_unblock_by_func (self, G_CALLBACK (changed_cb), GUINT_TO_POINTER (TRUE));
return success;
}
static void
ignore_cb (NMSettingsConnection *connection,
GError *error,
gpointer user_data)
{
}
/* Replaces the settings in this connection with those in 'new_connection'. If
* any changes are made, commits them to permanent storage and to any other
* subsystems watching this connection. Before returning, 'callback' is run
* with the given 'user_data' along with any errors encountered.
*/
void
nm_settings_connection_replace_and_commit (NMSettingsConnection *self,
NMConnection *new_connection,
NMSettingsConnectionCommitFunc callback,
gpointer user_data)
{
GError *error = NULL;
g_return_if_fail (NM_IS_SETTINGS_CONNECTION (self));
g_return_if_fail (NM_IS_CONNECTION (new_connection));
if (nm_settings_connection_replace_settings (self, new_connection, TRUE, &error)) {
nm_settings_connection_commit_changes (self, callback ? callback : ignore_cb, user_data);
} else {
if (callback)
callback (self, error, user_data);
g_clear_error (&error);
}
}
static void
commit_changes (NMSettingsConnection *self,
NMSettingsConnectionCommitFunc callback,
gpointer user_data)
{
/* Subclasses only call this function if the save was successful, so at
* this point the connection is synced to disk and no longer unsaved.
*/
set_unsaved (self, FALSE);
g_object_ref (self);
callback (self, NULL, user_data);
g_object_unref (self);
}
void
nm_settings_connection_commit_changes (NMSettingsConnection *connection,
NMSettingsConnectionCommitFunc callback,
gpointer user_data)
{
g_return_if_fail (NM_IS_SETTINGS_CONNECTION (connection));
g_return_if_fail (callback != NULL);
if (NM_SETTINGS_CONNECTION_GET_CLASS (connection)->commit_changes) {
NM_SETTINGS_CONNECTION_GET_CLASS (connection)->commit_changes (connection,
callback,
user_data);
} else {
GError *error = g_error_new (NM_SETTINGS_ERROR,
NM_SETTINGS_ERROR_INTERNAL_ERROR,
"%s: %s:%d commit_changes() unimplemented", __func__, __FILE__, __LINE__);
callback (connection, error, user_data);
g_error_free (error);
}
}
void
nm_settings_connection_delete (NMSettingsConnection *connection,
NMSettingsConnectionDeleteFunc callback,
gpointer user_data)
{
g_return_if_fail (NM_IS_SETTINGS_CONNECTION (connection));
g_return_if_fail (callback != NULL);
if (NM_SETTINGS_CONNECTION_GET_CLASS (connection)->delete) {
NM_SETTINGS_CONNECTION_GET_CLASS (connection)->delete (connection,
callback,
user_data);
} else {
GError *error = g_error_new (NM_SETTINGS_ERROR,
NM_SETTINGS_ERROR_INTERNAL_ERROR,
"%s: %s:%d delete() unimplemented", __func__, __FILE__, __LINE__);
callback (connection, error, user_data);
g_error_free (error);
}
}
static void
remove_entry_from_db (NMSettingsConnection *connection, const char* db_name)
{
GKeyFile *key_file;
const char *db_file;
if (strcmp (db_name, "timestamps") == 0)
db_file = SETTINGS_TIMESTAMPS_FILE;
else if (strcmp (db_name, "seen-bssids") == 0)
db_file = SETTINGS_SEEN_BSSIDS_FILE;
else
return;
key_file = g_key_file_new ();
if (g_key_file_load_from_file (key_file, db_file, G_KEY_FILE_KEEP_COMMENTS, NULL)) {
const char *connection_uuid;
char *data;
gsize len;
GError *error = NULL;
connection_uuid = nm_connection_get_uuid (NM_CONNECTION (connection));
g_key_file_remove_key (key_file, db_name, connection_uuid, NULL);
data = g_key_file_to_data (key_file, &len, &error);
if (data) {
g_file_set_contents (db_file, data, len, &error);
g_free (data);
}
if (error) {
nm_log_warn (LOGD_SETTINGS, "error writing %s file '%s': %s", db_name, db_file, error->message);
g_error_free (error);
}
}
g_key_file_free (key_file);
}
static void
do_delete (NMSettingsConnection *connection,
NMSettingsConnectionDeleteFunc callback,
gpointer user_data)
{
NMSettingsConnectionPrivate *priv = NM_SETTINGS_CONNECTION_GET_PRIVATE (connection);
NMConnection *for_agents;
g_object_ref (connection);
set_visible (connection, FALSE);
/* Tell agents to remove secrets for this connection */
for_agents = nm_connection_duplicate (NM_CONNECTION (connection));
nm_connection_clear_secrets (for_agents);
nm_agent_manager_delete_secrets (priv->agent_mgr, for_agents, FALSE, 0);
g_object_unref (for_agents);
/* Remove timestamp from timestamps database file */
remove_entry_from_db (connection, "timestamps");
/* Remove connection from seen-bssids database file */
remove_entry_from_db (connection, "seen-bssids");
nm_settings_connection_signal_remove (connection);
callback (connection, NULL, user_data);
g_object_unref (connection);
}
/**************************************************************/
static gboolean
supports_secrets (NMSettingsConnection *connection, const char *setting_name)
{
/* All secrets supported */
return TRUE;
}
static gboolean
clear_nonagent_secrets (GHashTableIter *iter,
NMSettingSecretFlags flags,
gpointer user_data)
{
if (flags != NM_SETTING_SECRET_FLAG_AGENT_OWNED)
g_hash_table_iter_remove (iter);
return TRUE;
}
static gboolean
clear_unsaved_secrets (GHashTableIter *iter,
NMSettingSecretFlags flags,
gpointer user_data)
{
if (flags & (NM_SETTING_SECRET_FLAG_NOT_SAVED | NM_SETTING_SECRET_FLAG_NOT_REQUIRED))
g_hash_table_iter_remove (iter);
return TRUE;
}
static gboolean
has_system_owned_secrets (GHashTableIter *iter,
NMSettingSecretFlags flags,
gpointer user_data)
{
gboolean *has_system_owned = user_data;
if (flags == NM_SETTING_SECRET_FLAG_NONE) {
*has_system_owned = TRUE;
return FALSE;
}
return TRUE;
}
static void
new_secrets_commit_cb (NMSettingsConnection *connection,
GError *error,
gpointer user_data)
{
if (error) {
nm_log_warn (LOGD_SETTINGS, "Error saving new secrets to backing storage: (%d) %s",
error->code, error->message ? error->message : "(unknown)");
}
}
static void
agent_secrets_done_cb (NMAgentManager *manager,
guint32 call_id,
const char *agent_dbus_owner,
const char *agent_username,
gboolean agent_has_modify,
const char *setting_name,
NMSettingsGetSecretsFlags flags,
GHashTable *secrets,
GError *error,
gpointer user_data,
gpointer other_data2,
gpointer other_data3)
{
NMSettingsConnection *self = NM_SETTINGS_CONNECTION (user_data);
NMSettingsConnectionPrivate *priv = NM_SETTINGS_CONNECTION_GET_PRIVATE (self);
NMSettingsConnectionSecretsFunc callback = other_data2;
gpointer callback_data = other_data3;
GError *local = NULL;
GHashTable *hash;
gboolean agent_had_system = FALSE;
if (error) {
nm_log_dbg (LOGD_SETTINGS, "(%s/%s:%u) secrets request error: (%d) %s",
nm_connection_get_uuid (NM_CONNECTION (self)),
setting_name,
call_id,
error->code,
error->message ? error->message : "(unknown)");
callback (self, call_id, NULL, setting_name, error, callback_data);
return;
}
if (!nm_connection_get_setting_by_name (NM_CONNECTION (self), setting_name)) {
local = g_error_new (NM_SETTINGS_ERROR, NM_SETTINGS_ERROR_INVALID_SETTING,
"%s.%d - Connection didn't have requested setting '%s'.",
__FILE__, __LINE__, setting_name);
callback (self, call_id, NULL, setting_name, local, callback_data);
g_clear_error (&local);
return;
}
g_assert (secrets);
if (agent_dbus_owner) {
nm_log_dbg (LOGD_SETTINGS, "(%s/%s:%u) secrets returned from agent %s",
nm_connection_get_uuid (NM_CONNECTION (self)),
setting_name,
call_id,
agent_dbus_owner);
/* If the agent returned any system-owned secrets (initial connect and no
* secrets given when the connection was created, or something like that)
* make sure the agent's UID has the 'modify' permission before we use or
* save those system-owned secrets. If not, discard them and use the
* existing secrets, or fail the connection.
*/
for_each_secret (NM_CONNECTION (self), secrets, has_system_owned_secrets, &agent_had_system);
if (agent_had_system) {
if (flags == NM_SETTINGS_GET_SECRETS_FLAG_NONE) {
/* No user interaction was allowed when requesting secrets; the
* agent is being bad. Remove system-owned secrets.
*/
nm_log_dbg (LOGD_SETTINGS, "(%s/%s:%u) interaction forbidden but agent %s returned system secrets",
nm_connection_get_uuid (NM_CONNECTION (self)),
setting_name,
call_id,
agent_dbus_owner);
for_each_secret (NM_CONNECTION (self), secrets, clear_nonagent_secrets, NULL);
} else if (agent_has_modify == FALSE) {
/* Agent didn't successfully authenticate; clear system-owned secrets
* from the secrets the agent returned.
*/
nm_log_dbg (LOGD_SETTINGS, "(%s/%s:%u) agent failed to authenticate but provided system secrets",
nm_connection_get_uuid (NM_CONNECTION (self)),
setting_name,
call_id);
for_each_secret (NM_CONNECTION (self), secrets, clear_nonagent_secrets, NULL);
}
}
} else {
nm_log_dbg (LOGD_SETTINGS, "(%s/%s:%u) existing secrets returned",
nm_connection_get_uuid (NM_CONNECTION (self)),
setting_name,
call_id);
}
nm_log_dbg (LOGD_SETTINGS, "(%s/%s:%u) secrets request completed",
nm_connection_get_uuid (NM_CONNECTION (self)),
setting_name,
call_id);
/* If no user interaction was allowed, make sure that no "unsaved" secrets
* came back. Unsaved secrets by definition require user interaction.
*/
if (flags == NM_SETTINGS_GET_SECRETS_FLAG_NONE)
for_each_secret (NM_CONNECTION (self), secrets, clear_unsaved_secrets, NULL);
/* Update the connection with our existing secrets from backing storage */
nm_connection_clear_secrets (NM_CONNECTION (self));
hash = nm_connection_to_hash (priv->system_secrets, NM_SETTING_HASH_FLAG_ONLY_SECRETS);
if (!hash || nm_connection_update_secrets (NM_CONNECTION (self), setting_name, hash, &local)) {
/* Update the connection with the agent's secrets; by this point if any
* system-owned secrets exist in 'secrets' the agent that provided them
* will have been authenticated, so those secrets can replace the existing
* system secrets.
*/
if (nm_connection_update_secrets (NM_CONNECTION (self), setting_name, secrets, &local)) {
/* Now that all secrets are updated, copy and cache new secrets,
* then save them to backing storage.
*/
update_system_secrets_cache (self);
update_agent_secrets_cache (self, NULL);
/* Only save secrets to backing storage if the agent returned any
* new system secrets. If it didn't, then the secrets are agent-
* owned and there's no point to writing out the connection when
* nothing has changed, since agent-owned secrets don't get saved here.
*/
if (agent_had_system) {
nm_log_dbg (LOGD_SETTINGS, "(%s/%s:%u) saving new secrets to backing storage",
nm_connection_get_uuid (NM_CONNECTION (self)),
setting_name,
call_id);
nm_settings_connection_commit_changes (self, new_secrets_commit_cb, NULL);
} else {
nm_log_dbg (LOGD_SETTINGS, "(%s/%s:%u) new agent secrets processed",
nm_connection_get_uuid (NM_CONNECTION (self)),
setting_name,
call_id);
}
} else {
nm_log_dbg (LOGD_SETTINGS, "(%s/%s:%u) failed to update with agent secrets: (%d) %s",
nm_connection_get_uuid (NM_CONNECTION (self)),
setting_name,
call_id,
local ? local->code : -1,
(local && local->message) ? local->message : "(unknown)");
}
} else {
nm_log_dbg (LOGD_SETTINGS, "(%s/%s:%u) failed to update with existing secrets: (%d) %s",
nm_connection_get_uuid (NM_CONNECTION (self)),
setting_name,
call_id,
local ? local->code : -1,
(local && local->message) ? local->message : "(unknown)");
}
callback (self, call_id, agent_username, setting_name, local, callback_data);
g_clear_error (&local);
if (hash)
g_hash_table_destroy (hash);
}
/**
* nm_settings_connection_get_secrets:
* @connection: the #NMSettingsConnection
* @filter_by_uid: if TRUE, only request secrets from agents registered by the
* same UID as @uid.
* @uid: when @filter_by_uid is TRUE, only request secrets from agents belonging
* to this UID
* @setting_name: the setting to return secrets for
* @flags: flags to modify the secrets request
* @hints: key names in @setting_name for which secrets may be required, or some
* other information about the request
* @callback: the function to call with returned secrets
* @callback_data: user data to pass to @callback
*
* Retrieves secrets from persistent storage and queries any secret agents for
* additional secrets.
*
* Returns: a call ID which may be used to cancel the ongoing secrets request
**/
guint32
nm_settings_connection_get_secrets (NMSettingsConnection *self,
gboolean filter_by_uid,
gulong uid,
const char *setting_name,
NMSettingsGetSecretsFlags flags,
const char **hints,
NMSettingsConnectionSecretsFunc callback,
gpointer callback_data,
GError **error)
{
NMSettingsConnectionPrivate *priv = NM_SETTINGS_CONNECTION_GET_PRIVATE (self);
GHashTable *existing_secrets;
guint32 call_id = 0;
char *joined_hints = NULL;
/* Use priv->secrets to work around the fact that nm_connection_clear_secrets()
* will clear secrets on this object's settings.
*/
if (!priv->system_secrets) {
g_set_error (error, NM_SETTINGS_ERROR, NM_SETTINGS_ERROR_INVALID_CONNECTION,
"%s.%d - Internal error; secrets cache invalid.",
__FILE__, __LINE__);
return 0;
}
/* Make sure the request actually requests something we can return */
if (!nm_connection_get_setting_by_name (NM_CONNECTION (self), setting_name)) {
g_set_error (error, NM_SETTINGS_ERROR, NM_SETTINGS_ERROR_INVALID_SETTING,
"%s.%d - Connection didn't have requested setting '%s'.",
__FILE__, __LINE__, setting_name);
return 0;
}
existing_secrets = nm_connection_to_hash (priv->system_secrets, NM_SETTING_HASH_FLAG_ONLY_SECRETS);
call_id = nm_agent_manager_get_secrets (priv->agent_mgr,
NM_CONNECTION (self),
filter_by_uid,
uid,
existing_secrets,
setting_name,
flags,
hints,
agent_secrets_done_cb,
self,
callback,
callback_data);
if (existing_secrets)
g_hash_table_unref (existing_secrets);
if (nm_logging_level_enabled (LOGL_DEBUG)) {
if (hints)
joined_hints = g_strjoinv (",", (char **) hints);
nm_log_dbg (LOGD_SETTINGS, "(%s/%s:%u) secrets requested flags 0x%X hints '%s'",
nm_connection_get_uuid (NM_CONNECTION (self)),
setting_name,
call_id,
flags,
joined_hints ? joined_hints : "(none)");
g_free (joined_hints);
}
return call_id;
}
void
nm_settings_connection_cancel_secrets (NMSettingsConnection *self,
guint32 call_id)
{
NMSettingsConnectionPrivate *priv = NM_SETTINGS_CONNECTION_GET_PRIVATE (self);
nm_log_dbg (LOGD_SETTINGS, "(%s:%u) secrets canceled",
nm_connection_get_uuid (NM_CONNECTION (self)),
call_id);
priv->reqs = g_slist_remove (priv->reqs, GUINT_TO_POINTER (call_id));
nm_agent_manager_cancel_secrets (priv->agent_mgr, call_id);
}
/**** User authorization **************************************/
typedef void (*AuthCallback) (NMSettingsConnection *connection,
DBusGMethodInvocation *context,
gulong sender_uid,
GError *error,
gpointer data);
static void
pk_auth_cb (NMAuthChain *chain,
GError *chain_error,
DBusGMethodInvocation *context,
gpointer user_data)
{
NMSettingsConnection *self = NM_SETTINGS_CONNECTION (user_data);
NMSettingsConnectionPrivate *priv = NM_SETTINGS_CONNECTION_GET_PRIVATE (self);
GError *error = NULL;
NMAuthCallResult result;
const char *perm;
AuthCallback callback;
gpointer callback_data;
gulong sender_uid;
priv->pending_auths = g_slist_remove (priv->pending_auths, chain);
perm = nm_auth_chain_get_data (chain, "perm");
g_assert (perm);
result = nm_auth_chain_get_result (chain, perm);
/* If our NMSettingsConnection is already gone, do nothing */
if (chain_error) {
error = g_error_new (NM_SETTINGS_ERROR,
NM_SETTINGS_ERROR_GENERAL,
"Error checking authorization: %s",
chain_error->message ? chain_error->message : "(unknown)");
} else if (result != NM_AUTH_CALL_RESULT_YES) {
error = g_error_new_literal (NM_SETTINGS_ERROR,
NM_SETTINGS_ERROR_PERMISSION_DENIED,
"Insufficient privileges.");
}
callback = nm_auth_chain_get_data (chain, "callback");
callback_data = nm_auth_chain_get_data (chain, "callback-data");
sender_uid = nm_auth_chain_get_data_ulong (chain, "sender-uid");
callback (self, context, sender_uid, error, callback_data);
g_clear_error (&error);
nm_auth_chain_unref (chain);
}
static gboolean
check_user_in_acl (NMConnection *connection,
DBusGMethodInvocation *context,
NMSessionMonitor *session_monitor,
gulong *out_sender_uid,
GError **error)
{
gulong sender_uid = G_MAXULONG;
char *error_desc = NULL;
g_return_val_if_fail (connection != NULL, FALSE);
g_return_val_if_fail (context != NULL, FALSE);
g_return_val_if_fail (session_monitor != NULL, FALSE);
/* Get the caller's UID */
if (!nm_dbus_manager_get_caller_info (nm_dbus_manager_get (), context, NULL, &sender_uid)) {
g_set_error_literal (error,
NM_SETTINGS_ERROR,
NM_SETTINGS_ERROR_PERMISSION_DENIED,
"Unable to determine UID of request.");
return FALSE;
}
/* Make sure the UID can view this connection */
if (!nm_auth_uid_in_acl (connection, session_monitor, sender_uid, &error_desc)) {
g_set_error_literal (error,
NM_SETTINGS_ERROR,
NM_SETTINGS_ERROR_PERMISSION_DENIED,
error_desc);
g_free (error_desc);
return FALSE;
}
if (out_sender_uid)
*out_sender_uid = sender_uid;
return TRUE;
}
static void
auth_start (NMSettingsConnection *self,
DBusGMethodInvocation *context,
const char *check_permission,
AuthCallback callback,
gpointer callback_data)
{
NMSettingsConnectionPrivate *priv = NM_SETTINGS_CONNECTION_GET_PRIVATE (self);
NMAuthChain *chain;
gulong sender_uid = G_MAXULONG;
GError *error = NULL;
const char *error_desc = NULL;
if (!check_user_in_acl (NM_CONNECTION (self),
context,
priv->session_monitor,
&sender_uid,
&error)) {
callback (self, context, G_MAXULONG, error, callback_data);
g_clear_error (&error);
return;
}
if (check_permission) {
chain = nm_auth_chain_new (context, pk_auth_cb, self, &error_desc);
if (chain) {
priv->pending_auths = g_slist_append (priv->pending_auths, chain);
nm_auth_chain_set_data (chain, "perm", (gpointer) check_permission, NULL);
nm_auth_chain_set_data (chain, "callback", callback, NULL);
nm_auth_chain_set_data (chain, "callback-data", callback_data, NULL);
nm_auth_chain_set_data_ulong (chain, "sender-uid", sender_uid);
nm_auth_chain_add_call (chain, check_permission, TRUE);
} else {
g_set_error_literal (&error,
NM_SETTINGS_ERROR,
NM_SETTINGS_ERROR_PERMISSION_DENIED,
error_desc);
callback (self, context, G_MAXULONG, error, callback_data);
g_clear_error (&error);
}
} else {
/* Don't need polkit auth, automatic success */
callback (self, context, sender_uid, NULL, callback_data);
}
}
/**** DBus method handlers ************************************/
static gboolean
check_writable (NMConnection *connection, GError **error)
{
NMSettingConnection *s_con;
g_return_val_if_fail (NM_IS_CONNECTION (connection), FALSE);
s_con = nm_connection_get_setting_connection (connection);
if (!s_con) {
g_set_error_literal (error,
NM_SETTINGS_ERROR,
NM_SETTINGS_ERROR_INVALID_CONNECTION,
"Connection did not have required 'connection' setting");
return FALSE;
}
/* If the connection is read-only, that has to be changed at the source of
* the problem (ex a system settings plugin that can't write connections out)
* instead of over D-Bus.
*/
if (nm_setting_connection_get_read_only (s_con)) {
g_set_error_literal (error,
NM_SETTINGS_ERROR,
NM_SETTINGS_ERROR_READ_ONLY_CONNECTION,
"Connection is read-only");
return FALSE;
}
return TRUE;
}
static void
get_settings_auth_cb (NMSettingsConnection *self,
DBusGMethodInvocation *context,
gulong sender_uid,
GError *error,
gpointer data)
{
if (error)
dbus_g_method_return_error (context, error);
else {
GHashTable *settings;
NMConnection *dupl_con;
NMSettingConnection *s_con;
NMSettingWireless *s_wifi;
guint64 timestamp = 0;
GSList *bssid_list;
dupl_con = nm_connection_duplicate (NM_CONNECTION (self));
g_assert (dupl_con);
/* Timestamp is not updated in connection's 'timestamp' property,
* because it would force updating the connection and in turn
* writing to /etc periodically, which we want to avoid. Rather real
* timestamps are kept track of in a private variable. So, substitute
* timestamp property with the real one here before returning the settings.
*/
nm_settings_connection_get_timestamp (self, &timestamp);
if (timestamp) {
s_con = nm_connection_get_setting_connection (NM_CONNECTION (dupl_con));
g_assert (s_con);
g_object_set (s_con, NM_SETTING_CONNECTION_TIMESTAMP, timestamp, NULL);
}
/* Seen BSSIDs are not updated in 802-11-wireless 'seen-bssids' property
* from the same reason as timestamp. Thus we put it here to GetSettings()
* return settings too.
*/
bssid_list = nm_settings_connection_get_seen_bssids (self);
s_wifi = nm_connection_get_setting_wireless (NM_CONNECTION (dupl_con));
if (bssid_list && s_wifi) {
g_object_set (s_wifi, NM_SETTING_WIRELESS_SEEN_BSSIDS, bssid_list, NULL);
g_slist_free_full (bssid_list, g_free);
}
/* Secrets should *never* be returned by the GetSettings method, they
* get returned by the GetSecrets method which can be better
* protected against leakage of secrets to unprivileged callers.
*/
settings = nm_connection_to_hash (NM_CONNECTION (dupl_con), NM_SETTING_HASH_FLAG_NO_SECRETS);
g_assert (settings);
dbus_g_method_return (context, settings);
g_hash_table_destroy (settings);
g_object_unref (dupl_con);
}
}
static void
impl_settings_connection_get_settings (NMSettingsConnection *self,
DBusGMethodInvocation *context)
{
auth_start (self, context, NULL, get_settings_auth_cb, NULL);
}
typedef struct {
DBusGMethodInvocation *context;
NMAgentManager *agent_mgr;
gulong sender_uid;
NMConnection *new_settings;
gboolean save_to_disk;
} UpdateInfo;
static void
update_complete (NMSettingsConnection *self,
UpdateInfo *info,
GError *error)
{
if (error)
dbus_g_method_return_error (info->context, error);
else
dbus_g_method_return (info->context);
g_clear_object (&info->agent_mgr);
g_clear_object (&info->new_settings);
memset (info, 0, sizeof (*info));
g_free (info);
}
static void
con_update_cb (NMSettingsConnection *self,
GError *error,
gpointer user_data)
{
UpdateInfo *info = user_data;
NMConnection *for_agent;
if (!error) {
/* Dupe the connection so we can clear out non-agent-owned secrets,
* as agent-owned secrets are the only ones we send back be saved.
* Only send secrets to agents of the same UID that called update too.
*/
for_agent = nm_connection_duplicate (NM_CONNECTION (self));
nm_connection_clear_secrets_with_flags (for_agent,
secrets_filter_cb,
GUINT_TO_POINTER (NM_SETTING_SECRET_FLAG_AGENT_OWNED));
nm_agent_manager_save_secrets (info->agent_mgr, for_agent, TRUE, info->sender_uid);
g_object_unref (for_agent);
}
update_complete (self, info, error);
}
static void
update_auth_cb (NMSettingsConnection *self,
DBusGMethodInvocation *context,
gulong sender_uid,
GError *error,
gpointer data)
{
UpdateInfo *info = data;
GError *local = NULL;
if (error) {
update_complete (self, info, error);
return;
}
info->sender_uid = sender_uid;
/* Cache the new secrets from the agent, as stuff like inotify-triggered
* changes to connection's backing config files will blow them away if
* they're in the main connection.
*/
update_agent_secrets_cache (self, info->new_settings);
if (info->save_to_disk) {
nm_settings_connection_replace_and_commit (self,
info->new_settings,
con_update_cb,
info);
} else {
/* Do nothing if there's nothing to update */
if (!nm_connection_compare (NM_CONNECTION (self), info->new_settings, NM_SETTING_COMPARE_FLAG_EXACT)) {
if (!nm_settings_connection_replace_settings (self, info->new_settings, TRUE, &local))
g_assert (local);
}
con_update_cb (self, local, info);
g_clear_error (&local);
}
}
static const char *
get_update_modify_permission (NMConnection *old, NMConnection *new)
{
NMSettingConnection *s_con;
guint32 orig_num = 0, new_num = 0;
s_con = nm_connection_get_setting_connection (old);
g_assert (s_con);
orig_num = nm_setting_connection_get_num_permissions (s_con);
s_con = nm_connection_get_setting_connection (new);
g_assert (s_con);
new_num = nm_setting_connection_get_num_permissions (s_con);
/* If the caller is the only user in either connection's permissions, then
* we use the 'modify.own' permission instead of 'modify.system'.
*/
if (orig_num == 1 && new_num == 1)
return NM_AUTH_PERMISSION_SETTINGS_MODIFY_OWN;
/* If the update request affects more than just the caller (ie if the old
* settings were system-wide, or the new ones are), require 'modify.system'.
*/
return NM_AUTH_PERMISSION_SETTINGS_MODIFY_SYSTEM;
}
static void
impl_settings_connection_update_helper (NMSettingsConnection *self,
GHashTable *new_settings,
DBusGMethodInvocation *context,
gboolean save_to_disk)
{
NMSettingsConnectionPrivate *priv = NM_SETTINGS_CONNECTION_GET_PRIVATE (self);
NMConnection *tmp = NULL;
GError *error = NULL;
UpdateInfo *info;
const char *permission;
g_assert (new_settings != NULL || save_to_disk == TRUE);
/* If the connection is read-only, that has to be changed at the source of
* the problem (ex a system settings plugin that can't write connections out)
* instead of over D-Bus.
*/
if (!check_writable (NM_CONNECTION (self), &error)) {
dbus_g_method_return_error (context, error);
g_error_free (error);
return;
}
/* Check if the settings are valid first */
if (new_settings) {
tmp = nm_connection_new_from_hash (new_settings, &error);
if (!tmp) {
g_assert (error);
dbus_g_method_return_error (context, error);
g_error_free (error);
return;
}
}
/* And that the new connection settings will be visible to the user
* that's sending the update request. You can't make a connection
* invisible to yourself.
*/
if (!check_user_in_acl (tmp ? tmp : NM_CONNECTION (self),
context,
priv->session_monitor,
NULL,
&error)) {
dbus_g_method_return_error (context, error);
g_clear_error (&error);
g_object_unref (tmp);
return;
}
info = g_malloc0 (sizeof (*info));
info->context = context;
info->agent_mgr = g_object_ref (priv->agent_mgr);
info->sender_uid = G_MAXULONG;
info->save_to_disk = save_to_disk;
info->new_settings = tmp;
permission = get_update_modify_permission (NM_CONNECTION (self),
tmp ? tmp : NM_CONNECTION (self));
auth_start (self, context, permission, update_auth_cb, info);
}
static void
impl_settings_connection_update (NMSettingsConnection *self,
GHashTable *new_settings,
DBusGMethodInvocation *context)
{
g_assert (new_settings);
impl_settings_connection_update_helper (self, new_settings, context, TRUE);
}
static void
impl_settings_connection_update_unsaved (NMSettingsConnection *self,
GHashTable *new_settings,
DBusGMethodInvocation *context)
{
g_assert (new_settings);
impl_settings_connection_update_helper (self, new_settings, context, FALSE);
}
static void
impl_settings_connection_save (NMSettingsConnection *self,
DBusGMethodInvocation *context)
{
/* Do nothing if the connection is already synced with disk */
if (NM_SETTINGS_CONNECTION_GET_PRIVATE (self)->unsaved == TRUE)
impl_settings_connection_update_helper (self, NULL, context, TRUE);
else
dbus_g_method_return (context);
}
static void
con_delete_cb (NMSettingsConnection *connection,
GError *error,
gpointer user_data)
{
DBusGMethodInvocation *context = user_data;
if (error)
dbus_g_method_return_error (context, error);
else
dbus_g_method_return (context);
}
static void
delete_auth_cb (NMSettingsConnection *self,
DBusGMethodInvocation *context,
gulong sender_uid,
GError *error,
gpointer data)
{
if (error) {
dbus_g_method_return_error (context, error);
return;
}
nm_settings_connection_delete (self, con_delete_cb, context);
}
static const char *
get_modify_permission_basic (NMSettingsConnection *connection)
{
NMSettingConnection *s_con;
/* If the caller is the only user in the connection's permissions, then
* we use the 'modify.own' permission instead of 'modify.system'. If the
* request affects more than just the caller, require 'modify.system'.
*/
s_con = nm_connection_get_setting_connection (NM_CONNECTION (connection));
g_assert (s_con);
if (nm_setting_connection_get_num_permissions (s_con) == 1)
return NM_AUTH_PERMISSION_SETTINGS_MODIFY_OWN;
return NM_AUTH_PERMISSION_SETTINGS_MODIFY_SYSTEM;
}
static void
impl_settings_connection_delete (NMSettingsConnection *self,
DBusGMethodInvocation *context)
{
GError *error = NULL;
if (!check_writable (NM_CONNECTION (self), &error)) {
dbus_g_method_return_error (context, error);
g_error_free (error);
return;
}
auth_start (self, context, get_modify_permission_basic (self), delete_auth_cb, NULL);
}
/**************************************************************/
static void
dbus_get_agent_secrets_cb (NMSettingsConnection *self,
guint32 call_id,
const char *agent_username,
const char *setting_name,
GError *error,
gpointer user_data)
{
NMSettingsConnectionPrivate *priv = NM_SETTINGS_CONNECTION_GET_PRIVATE (self);
DBusGMethodInvocation *context = user_data;
GHashTable *hash;
priv->reqs = g_slist_remove (priv->reqs, GUINT_TO_POINTER (call_id));
if (error)
dbus_g_method_return_error (context, error);
else {
/* Return secrets from agent and backing storage to the D-Bus caller;
* nm_settings_connection_get_secrets() will have updated itself with
* secrets from backing storage and those returned from the agent
* by the time we get here.
*/
hash = nm_connection_to_hash (NM_CONNECTION (self), NM_SETTING_HASH_FLAG_ONLY_SECRETS);
if (!hash)
hash = g_hash_table_new (NULL, NULL);
dbus_g_method_return (context, hash);
g_hash_table_destroy (hash);
}
}
static void
dbus_secrets_auth_cb (NMSettingsConnection *self,
DBusGMethodInvocation *context,
gulong sender_uid,
GError *error,
gpointer user_data)
{
NMSettingsConnectionPrivate *priv = NM_SETTINGS_CONNECTION_GET_PRIVATE (self);
char *setting_name = user_data;
guint32 call_id = 0;
GError *local = NULL;
if (!error) {
call_id = nm_settings_connection_get_secrets (self,
TRUE,
sender_uid,
setting_name,
NM_SETTINGS_GET_SECRETS_FLAG_USER_REQUESTED,
NULL,
dbus_get_agent_secrets_cb,
context,
&local);
if (call_id > 0) {
/* track the request and wait for the callback */
priv->reqs = g_slist_append (priv->reqs, GUINT_TO_POINTER (call_id));
}
}
if (error || local) {
dbus_g_method_return_error (context, error ? error : local);
g_clear_error (&local);
}
g_free (setting_name);
}
static void
impl_settings_connection_get_secrets (NMSettingsConnection *self,
const gchar *setting_name,
DBusGMethodInvocation *context)
{
auth_start (self,
context,
get_modify_permission_basic (self),
dbus_secrets_auth_cb,
g_strdup (setting_name));
}
/**************************************************************/
void
nm_settings_connection_signal_remove (NMSettingsConnection *self)
{
/* Emit removed first */
g_signal_emit_by_name (self, NM_SETTINGS_CONNECTION_REMOVED);
/* And unregistered last to ensure the removed signal goes out before
* we take the connection off the bus.
*/
nm_dbus_manager_unregister_object (nm_dbus_manager_get (), G_OBJECT (self));
}
gboolean
nm_settings_connection_get_unsaved (NMSettingsConnection *self)
{
return NM_SETTINGS_CONNECTION_GET_PRIVATE (self)->unsaved;
}
/**************************************************************/
/**
* nm_settings_connection_get_timestamp:
* @connection: the #NMSettingsConnection
* @out_timestamp: the connection's timestamp
*
* Returns the time (in seconds since the Unix epoch) when the connection
* was last successfully activated.
*
* Returns: %TRUE if the timestamp has ever been set, otherwise %FALSE.
**/
gboolean
nm_settings_connection_get_timestamp (NMSettingsConnection *connection,
guint64 *out_timestamp)
{
g_return_val_if_fail (NM_IS_SETTINGS_CONNECTION (connection), 0);
if (out_timestamp)
*out_timestamp = NM_SETTINGS_CONNECTION_GET_PRIVATE (connection)->timestamp;
return NM_SETTINGS_CONNECTION_GET_PRIVATE (connection)->timestamp_set;
}
/**
* nm_settings_connection_update_timestamp:
* @connection: the #NMSettingsConnection
* @timestamp: timestamp to set into the connection and to store into
* the timestamps database
* @flush_to_disk: if %TRUE, commit timestamp update to persistent storage
*
* Updates the connection and timestamps database with the provided timestamp.
**/
void
nm_settings_connection_update_timestamp (NMSettingsConnection *connection,
guint64 timestamp,
gboolean flush_to_disk)
{
NMSettingsConnectionPrivate *priv = NM_SETTINGS_CONNECTION_GET_PRIVATE (connection);
const char *connection_uuid;
GKeyFile *timestamps_file;
char *data, *tmp;
gsize len;
GError *error = NULL;
/* Update timestamp in private storage */
priv->timestamp = timestamp;
priv->timestamp_set = TRUE;
if (flush_to_disk == FALSE)
return;
/* Save timestamp to timestamps database file */
timestamps_file = g_key_file_new ();
if (!g_key_file_load_from_file (timestamps_file, SETTINGS_TIMESTAMPS_FILE, G_KEY_FILE_KEEP_COMMENTS, &error)) {
if (!(error->domain == G_FILE_ERROR && error->code == G_FILE_ERROR_NOENT))
nm_log_warn (LOGD_SETTINGS, "error parsing timestamps file '%s': %s", SETTINGS_TIMESTAMPS_FILE, error->message);
g_clear_error (&error);
}
connection_uuid = nm_connection_get_uuid (NM_CONNECTION (connection));
tmp = g_strdup_printf ("%" G_GUINT64_FORMAT, timestamp);
g_key_file_set_value (timestamps_file, "timestamps", connection_uuid, tmp);
g_free (tmp);
data = g_key_file_to_data (timestamps_file, &len, &error);
if (data) {
g_file_set_contents (SETTINGS_TIMESTAMPS_FILE, data, len, &error);
g_free (data);
}
if (error) {
nm_log_warn (LOGD_SETTINGS, "error saving timestamp to file '%s': %s", SETTINGS_TIMESTAMPS_FILE, error->message);
g_error_free (error);
}
g_key_file_free (timestamps_file);
}
/**
* nm_settings_connection_read_and_fill_timestamp:
* @connection: the #NMSettingsConnection
*
* Retrieves timestamp of the connection's last usage from database file and
* stores it into the connection private data.
**/
void
nm_settings_connection_read_and_fill_timestamp (NMSettingsConnection *connection)
{
NMSettingsConnectionPrivate *priv = NM_SETTINGS_CONNECTION_GET_PRIVATE (connection);
const char *connection_uuid;
guint64 timestamp = 0;
GKeyFile *timestamps_file;
GError *err = NULL;
char *tmp_str;
/* Get timestamp from database file */
timestamps_file = g_key_file_new ();
g_key_file_load_from_file (timestamps_file, SETTINGS_TIMESTAMPS_FILE, G_KEY_FILE_KEEP_COMMENTS, NULL);
connection_uuid = nm_connection_get_uuid (NM_CONNECTION (connection));
tmp_str = g_key_file_get_value (timestamps_file, "timestamps", connection_uuid, &err);
if (tmp_str) {
timestamp = g_ascii_strtoull (tmp_str, NULL, 10);
g_free (tmp_str);
}
/* Update connection's timestamp */
if (!err) {
priv->timestamp = timestamp;
priv->timestamp_set = TRUE;
} else {
nm_log_dbg (LOGD_SETTINGS, "failed to read connection timestamp for '%s': (%d) %s",
connection_uuid, err->code, err->message);
g_clear_error (&err);
}
g_key_file_free (timestamps_file);
}
static guint
mac_hash (gconstpointer v)
{
const guint8 *p = v;
guint32 i, h = 5381;
for (i = 0; i < ETH_ALEN; i++)
h = (h << 5) + h + p[i];
return h;
}
static gboolean
mac_equal (gconstpointer a, gconstpointer b)
{
return memcmp (a, b, ETH_ALEN) == 0;
}
static guint8 *
mac_dup (const struct ether_addr *old)
{
guint8 *new;
g_return_val_if_fail (old != NULL, NULL);
new = g_malloc0 (ETH_ALEN);
memcpy (new, old, ETH_ALEN);
return new;
}
/**
* nm_settings_connection_get_seen_bssids:
* @connection: the #NMSettingsConnection
*
* Returns current list of seen BSSIDs for the connection.
*
* Returns: (transfer full) list of seen BSSIDs (in the standard hex-digits-and-colons notation).
* The caller is responsible for freeing the list.
**/
GSList *
nm_settings_connection_get_seen_bssids (NMSettingsConnection *connection)
{
NMSettingsConnectionPrivate *priv = NM_SETTINGS_CONNECTION_GET_PRIVATE (connection);
GHashTableIter iter;
char *bssid_str;
GSList *bssid_list = NULL;
g_return_val_if_fail (NM_IS_SETTINGS_CONNECTION (connection), NULL);
g_hash_table_iter_init (&iter, priv->seen_bssids);
while (g_hash_table_iter_next (&iter, NULL, (gpointer) &bssid_str))
bssid_list = g_slist_prepend (bssid_list, g_strdup (bssid_str));
return bssid_list;
}
/**
* nm_settings_connection_has_seen_bssid:
* @connection: the #NMSettingsConnection
* @bssid: the BSSID to check the seen BSSID list for
*
* Returns: TRUE if the given @bssid is in the seen BSSIDs list
**/
gboolean
nm_settings_connection_has_seen_bssid (NMSettingsConnection *connection,
const struct ether_addr *bssid)
{
g_return_val_if_fail (NM_IS_SETTINGS_CONNECTION (connection), FALSE);
g_return_val_if_fail (bssid != NULL, FALSE);
return !!g_hash_table_lookup (NM_SETTINGS_CONNECTION_GET_PRIVATE (connection)->seen_bssids, bssid);
}
/**
* nm_settings_connection_add_seen_bssid:
* @connection: the #NMSettingsConnection
* @seen_bssid: BSSID to set into the connection and to store into
* the seen-bssids database
*
* Updates the connection and seen-bssids database with the provided BSSID.
**/
void
nm_settings_connection_add_seen_bssid (NMSettingsConnection *connection,
const struct ether_addr *seen_bssid)
{
NMSettingsConnectionPrivate *priv = NM_SETTINGS_CONNECTION_GET_PRIVATE (connection);
const char *connection_uuid;
GKeyFile *seen_bssids_file;
char *data, *bssid_str;
const char **list;
gsize len;
GError *error = NULL;
GHashTableIter iter;
guint n;
g_return_if_fail (seen_bssid != NULL);
if (g_hash_table_lookup (priv->seen_bssids, seen_bssid))
return; /* Already in the list */
/* Add the new BSSID; let the hash take ownership of the allocated BSSID string */
bssid_str = nm_utils_hwaddr_ntoa (seen_bssid, ARPHRD_ETHER);
g_return_if_fail (bssid_str != NULL);
g_hash_table_insert (priv->seen_bssids, mac_dup (seen_bssid), bssid_str);
/* Build up a list of all the BSSIDs in string form */
n = 0;
list = g_malloc0 (g_hash_table_size (priv->seen_bssids) * sizeof (char *));
g_hash_table_iter_init (&iter, priv->seen_bssids);
while (g_hash_table_iter_next (&iter, NULL, (gpointer) &bssid_str))
list[n++] = bssid_str;
/* Save BSSID to seen-bssids file */
seen_bssids_file = g_key_file_new ();
g_key_file_set_list_separator (seen_bssids_file, ',');
if (!g_key_file_load_from_file (seen_bssids_file, SETTINGS_SEEN_BSSIDS_FILE, G_KEY_FILE_KEEP_COMMENTS, &error)) {
if (!g_error_matches (error, G_FILE_ERROR, G_FILE_ERROR_NOENT)) {
nm_log_warn (LOGD_SETTINGS, "error parsing seen-bssids file '%s': %s",
SETTINGS_SEEN_BSSIDS_FILE, error->message);
}
g_clear_error (&error);
}
connection_uuid = nm_connection_get_uuid (NM_CONNECTION (connection));
g_key_file_set_string_list (seen_bssids_file, "seen-bssids", connection_uuid, list, n);
g_free (list);
data = g_key_file_to_data (seen_bssids_file, &len, &error);
if (data) {
g_file_set_contents (SETTINGS_SEEN_BSSIDS_FILE, data, len, &error);
g_free (data);
}
g_key_file_free (seen_bssids_file);
if (error) {
nm_log_warn (LOGD_SETTINGS, "error saving seen-bssids to file '%s': %s",
SETTINGS_SEEN_BSSIDS_FILE, error->message);
g_error_free (error);
}
}
static void
add_seen_bssid_string (NMSettingsConnection *self, const char *bssid)
{
struct ether_addr mac;
g_return_if_fail (bssid != NULL);
if (ether_aton_r (bssid, &mac)) {
g_hash_table_insert (NM_SETTINGS_CONNECTION_GET_PRIVATE (self)->seen_bssids,
mac_dup (&mac),
g_strdup (bssid));
}
}
/**
* nm_settings_connection_read_and_fill_seen_bssids:
* @connection: the #NMSettingsConnection
*
* Retrieves seen BSSIDs of the connection from database file and stores then into the
* connection private data.
**/
void
nm_settings_connection_read_and_fill_seen_bssids (NMSettingsConnection *connection)
{
NMSettingsConnectionPrivate *priv = NM_SETTINGS_CONNECTION_GET_PRIVATE (connection);
const char *connection_uuid;
GKeyFile *seen_bssids_file;
char **tmp_strv = NULL;
gsize i, len = 0;
NMSettingWireless *s_wifi;
/* Get seen BSSIDs from database file */
seen_bssids_file = g_key_file_new ();
g_key_file_set_list_separator (seen_bssids_file, ',');
if (g_key_file_load_from_file (seen_bssids_file, SETTINGS_SEEN_BSSIDS_FILE, G_KEY_FILE_KEEP_COMMENTS, NULL)) {
connection_uuid = nm_connection_get_uuid (NM_CONNECTION (connection));
tmp_strv = g_key_file_get_string_list (seen_bssids_file, "seen-bssids", connection_uuid, &len, NULL);
}
g_key_file_free (seen_bssids_file);
/* Update connection's seen-bssids */
if (tmp_strv) {
g_hash_table_remove_all (priv->seen_bssids);
for (i = 0; i < len; i++)
add_seen_bssid_string (connection, tmp_strv[i]);
g_strfreev (tmp_strv);
} else {
/* If this connection didn't have an entry in the seen-bssids database,
* maybe this is the first time we've read it in, so populate the
* seen-bssids list from the deprecated seen-bssids property of the
* wifi setting.
*/
s_wifi = nm_connection_get_setting_wireless (NM_CONNECTION (connection));
if (s_wifi) {
len = nm_setting_wireless_get_num_seen_bssids (s_wifi);
for (i = 0; i < len; i++)
add_seen_bssid_string (connection, nm_setting_wireless_get_seen_bssid (s_wifi, i));
}
}
}
/**************************************************************/
static void
nm_settings_connection_init (NMSettingsConnection *self)
{
NMSettingsConnectionPrivate *priv = NM_SETTINGS_CONNECTION_GET_PRIVATE (self);
priv->visible = FALSE;
priv->session_monitor = nm_session_monitor_get ();
priv->session_changed_id = g_signal_connect (priv->session_monitor,
NM_SESSION_MONITOR_CHANGED,
G_CALLBACK (session_changed_cb),
self);
priv->agent_mgr = nm_agent_manager_get ();
priv->seen_bssids = g_hash_table_new_full (mac_hash, mac_equal, g_free, g_free);
g_signal_connect (self, NM_CONNECTION_SECRETS_CLEARED, G_CALLBACK (secrets_cleared_cb), NULL);
g_signal_connect (self, NM_CONNECTION_CHANGED, G_CALLBACK (changed_cb), GUINT_TO_POINTER (TRUE));
}
static void
dispose (GObject *object)
{
NMSettingsConnection *self = NM_SETTINGS_CONNECTION (object);
NMSettingsConnectionPrivate *priv = NM_SETTINGS_CONNECTION_GET_PRIVATE (self);
GSList *iter;
if (priv->disposed)
goto out;
priv->disposed = TRUE;
if (priv->updated_idle_id) {
g_source_remove (priv->updated_idle_id);
priv->updated_idle_id = 0;
}
if (priv->system_secrets)
g_object_unref (priv->system_secrets);
if (priv->agent_secrets)
g_object_unref (priv->agent_secrets);
/* Cancel PolicyKit requests */
for (iter = priv->pending_auths; iter; iter = g_slist_next (iter))
nm_auth_chain_unref ((NMAuthChain *) iter->data);
g_slist_free (priv->pending_auths);
priv->pending_auths = NULL;
/* Cancel in-progress secrets requests */
for (iter = priv->reqs; iter; iter = g_slist_next (iter))
nm_agent_manager_cancel_secrets (priv->agent_mgr, GPOINTER_TO_UINT (iter->data));
g_slist_free (priv->reqs);
g_hash_table_destroy (priv->seen_bssids);
set_visible (self, FALSE);
if (priv->session_changed_id)
g_signal_handler_disconnect (priv->session_monitor, priv->session_changed_id);
g_object_unref (priv->session_monitor);
g_object_unref (priv->agent_mgr);
out:
G_OBJECT_CLASS (nm_settings_connection_parent_class)->dispose (object);
}
static void
get_property (GObject *object, guint prop_id,
GValue *value, GParamSpec *pspec)
{
NMSettingsConnectionPrivate *priv = NM_SETTINGS_CONNECTION_GET_PRIVATE (object);
switch (prop_id) {
case PROP_VISIBLE:
g_value_set_boolean (value, priv->visible);
break;
case PROP_UNSAVED:
g_value_set_boolean (value, priv->unsaved);
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)
{
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
static void
nm_settings_connection_class_init (NMSettingsConnectionClass *class)
{
GObjectClass *object_class = G_OBJECT_CLASS (class);
g_type_class_add_private (class, sizeof (NMSettingsConnectionPrivate));
/* Virtual methods */
object_class->dispose = dispose;
object_class->get_property = get_property;
object_class->set_property = set_property;
class->commit_changes = commit_changes;
class->delete = do_delete;
class->supports_secrets = supports_secrets;
/* Properties */
g_object_class_install_property
(object_class, PROP_VISIBLE,
g_param_spec_boolean (NM_SETTINGS_CONNECTION_VISIBLE,
"Visible",
"Visible",
FALSE,
G_PARAM_READABLE));
g_object_class_install_property
(object_class, PROP_UNSAVED,
g_param_spec_boolean (NM_SETTINGS_CONNECTION_UNSAVED,
"Unsaved",
"TRUE when the connection has not yet been saved "
"to permanent storage (eg disk) or when it "
"has been changed but not yet saved.",
FALSE,
G_PARAM_READABLE));
/* Signals */
signals[UPDATED] =
g_signal_new (NM_SETTINGS_CONNECTION_UPDATED,
G_TYPE_FROM_CLASS (class),
G_SIGNAL_RUN_FIRST,
0,
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
signals[REMOVED] =
g_signal_new (NM_SETTINGS_CONNECTION_REMOVED,
G_TYPE_FROM_CLASS (class),
G_SIGNAL_RUN_FIRST,
0,
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
nm_dbus_manager_register_exported_type (nm_dbus_manager_get (),
G_TYPE_FROM_CLASS (class),
&dbus_glib_nm_settings_connection_object_info);
}
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