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core: add caller info functions to DBusManager

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Because the DBusManager is the thing that knows about private
connections, it's the thing best positioned to get caller
details like sender and UID.
This commit is contained in:
Dan Williams 2012-12-15 10:21:40 -06:00
parent c9335a497b
commit c4ac2f3279
2 changed files with 103 additions and 0 deletions
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92
src/nm-dbus-manager.c
View file

@ -261,6 +261,98 @@ private_server_get_connection_owner (PrivateServer *s, DBusGConnection *connecti
/**************************************************************/
/**
* _get_caller_info_from_context():
*
* Given a dbus-glib method invocation, or a DBusConnection + DBusMessage,
* return the sender and the UID of the sender.
*/
static gboolean
_get_caller_info (NMDBusManager *self,
DBusGMethodInvocation *context,
DBusConnection *connection,
DBusMessage *message,
char **out_sender,
gulong *out_uid)
{
NMDBusManagerPrivate *priv = NM_DBUS_MANAGER_GET_PRIVATE (self);
DBusGConnection *gconn;
char *sender;
const char *priv_sender;
DBusError error;
GSList *iter;
if (context) {
gconn = dbus_g_method_invocation_get_g_connection (context);
g_assert (gconn);
connection = dbus_g_connection_get_connection (gconn);
/* only bus connections will have a sender */
sender = dbus_g_method_get_sender (context);
} else {
g_assert (message);
sender = g_strdup (dbus_message_get_sender (message));
}
g_assert (connection);
if (!sender) {
/* Might be a private connection, for which we fake a sender */
for (iter = priv->private_servers; iter; iter = g_slist_next (iter)) {
PrivateServer *s = iter->data;
priv_sender = g_hash_table_lookup (s->connections, connection);
if (priv_sender) {
if (out_uid)
*out_uid = 0;
if (out_sender)
*out_sender = g_strdup (priv_sender);
return TRUE;
}
}
return FALSE;
}
/* Bus connections always have a sender */
g_assert (sender);
if (out_uid) {
dbus_error_init (&error);
*out_uid = dbus_bus_get_unix_user (connection, sender, &error);
if (dbus_error_is_set (&error)) {
dbus_error_free (&error);
*out_uid = G_MAXULONG;
g_free (sender);
return FALSE;
}
}
if (out_sender)
*out_sender = g_strdup (sender);
g_free (sender);
return TRUE;
}
gboolean
nm_dbus_manager_get_caller_info (NMDBusManager *self,
DBusGMethodInvocation *context,
char **out_sender,
gulong *out_uid)
{
return _get_caller_info (self, context, NULL, NULL, out_sender, out_uid);
}
gboolean
nm_dbus_manager_get_caller_info_from_message (NMDBusManager *self,
DBusConnection *connection,
DBusMessage *message,
char **out_sender,
gulong *out_uid)
{
return _get_caller_info (self, NULL, connection, message, out_sender, out_uid);
}
/**************************************************************/
#if HAVE_DBUS_GLIB_100
static void
private_connection_new (NMDBusManager *self, DBusGConnection *connection)

11
src/nm-dbus-manager.h
View file

@ -84,6 +84,17 @@ gboolean nm_dbus_manager_name_has_owner (NMDBusManager *self,
DBusConnection * nm_dbus_manager_get_dbus_connection (NMDBusManager *self);
DBusGConnection * nm_dbus_manager_get_connection (NMDBusManager *self);
gboolean nm_dbus_manager_get_caller_info (NMDBusManager *self,
DBusGMethodInvocation *context,
char **out_sender,
gulong *out_uid);
gboolean nm_dbus_manager_get_caller_info_from_message (NMDBusManager *self,
DBusConnection *connection,
DBusMessage *message,
char **out_sender,
gulong *out_uid);
void nm_dbus_manager_register_object (NMDBusManager *self,
const char *path,
gpointer object);