-/* -*- mode: C; c-file-style: "gnu" -*- */
+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/* dbus-server-unix.c Server implementation for Unix network protocols.
*
* Copyright (C) 2002, 2003, 2004 Red Hat Inc.
*
* Licensed under the Academic Free License version 2.1
- *
+ *
* 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
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
+#include <config.h>
#include "dbus-internals.h"
#include "dbus-server-unix.h"
+#include "dbus-server-socket.h"
+#include "dbus-server-launchd.h"
#include "dbus-transport-unix.h"
#include "dbus-connection-internal.h"
+#include "dbus-sysdeps-unix.h"
#include "dbus-string.h"
-#include <sys/types.h>
-#include <unistd.h>
/**
* @defgroup DBusServerUnix DBusServer implementations for UNIX
*
* @{
*/
-/**
- *
- * Opaque object representing a Unix server implementation.
- */
-typedef struct DBusServerUnix DBusServerUnix;
/**
- * Implementation details of DBusServerUnix. All members
- * are private.
+ * Tries to interpret the address entry in a platform-specific
+ * way, creating a platform-specific server type if appropriate.
+ * Sets error if the result is not OK.
+ *
+ * @param entry an address entry
+ * @param server_p location to store a new DBusServer, or #NULL on failure.
+ * @param error location to store rationale for failure on bad address
+ * @returns the outcome
+ *
*/
-struct DBusServerUnix
-{
- DBusServer base; /**< Parent class members. */
- int fd; /**< File descriptor or -1 if disconnected. */
- DBusWatch *watch; /**< File descriptor watch. */
- char *socket_name; /**< Name of domain socket, to unlink if appropriate */
-};
-
-static void
-unix_finalize (DBusServer *server)
+DBusServerListenResult
+_dbus_server_listen_platform_specific (DBusAddressEntry *entry,
+ DBusServer **server_p,
+ DBusError *error)
{
- DBusServerUnix *unix_server = (DBusServerUnix*) server;
-
- _dbus_server_finalize_base (server);
+ const char *method;
- if (unix_server->watch)
- {
- _dbus_watch_unref (unix_server->watch);
- unix_server->watch = NULL;
- }
-
- dbus_free (unix_server->socket_name);
- dbus_free (server);
-}
+ *server_p = NULL;
-/**
- * @todo unreffing the connection at the end may cause
- * us to drop the last ref to the connection before
- * disconnecting it. That is invalid.
- *
- * @todo doesn't this leak a server refcount if
- * new_connection_function is NULL?
- */
-/* Return value is just for memory, not other failures. */
-static dbus_bool_t
-handle_new_client_fd_and_unlock (DBusServer *server,
- int client_fd)
-{
- DBusConnection *connection;
- DBusTransport *transport;
- DBusNewConnectionFunction new_connection_function;
- void *new_connection_data;
-
- _dbus_verbose ("Creating new client connection with fd %d\n", client_fd);
-
- HAVE_LOCK_CHECK (server);
-
- if (!_dbus_set_fd_nonblocking (client_fd, NULL))
- {
- SERVER_UNLOCK (server);
- return TRUE;
- }
-
- transport = _dbus_transport_new_for_fd (client_fd, &server->guid_hex, NULL);
- if (transport == NULL)
- {
- close (client_fd);
- SERVER_UNLOCK (server);
- return FALSE;
- }
+ method = dbus_address_entry_get_method (entry);
- if (!_dbus_transport_set_auth_mechanisms (transport,
- (const char **) server->auth_mechanisms))
- {
- _dbus_transport_unref (transport);
- SERVER_UNLOCK (server);
- return FALSE;
- }
-
- /* note that client_fd is now owned by the transport, and will be
- * closed on transport disconnection/finalization
- */
-
- connection = _dbus_connection_new_for_transport (transport);
- _dbus_transport_unref (transport);
- transport = NULL; /* now under the connection lock */
-
- if (connection == NULL)
- {
- SERVER_UNLOCK (server);
- return FALSE;
- }
-
- /* See if someone wants to handle this new connection, self-referencing
- * for paranoia.
- */
- new_connection_function = server->new_connection_function;
- new_connection_data = server->new_connection_data;
-
- _dbus_server_ref_unlocked (server);
- SERVER_UNLOCK (server);
-
- if (new_connection_function)
+ if (strcmp (method, "unix") == 0)
{
- (* new_connection_function) (server, connection,
- new_connection_data);
- dbus_server_unref (server);
- }
-
- /* If no one grabbed a reference, the connection will die. */
- dbus_connection_unref (connection);
-
- return TRUE;
-}
+ const char *path = dbus_address_entry_get_value (entry, "path");
+ const char *tmpdir = dbus_address_entry_get_value (entry, "tmpdir");
+ const char *abstract = dbus_address_entry_get_value (entry, "abstract");
-static dbus_bool_t
-unix_handle_watch (DBusWatch *watch,
- unsigned int flags,
- void *data)
-{
- DBusServer *server = data;
- DBusServerUnix *unix_server = data;
+ if (path == NULL && tmpdir == NULL && abstract == NULL)
+ {
+ _dbus_set_bad_address(error, "unix",
+ "path or tmpdir or abstract",
+ NULL);
+ return DBUS_SERVER_LISTEN_BAD_ADDRESS;
+ }
- SERVER_LOCK (server);
-
- _dbus_assert (watch == unix_server->watch);
+ if ((path && tmpdir) ||
+ (path && abstract) ||
+ (tmpdir && abstract))
+ {
+ _dbus_set_bad_address(error, NULL, NULL,
+ "cannot specify two of \"path\" and \"tmpdir\" and \"abstract\" at the same time");
+ return DBUS_SERVER_LISTEN_BAD_ADDRESS;
+ }
- _dbus_verbose ("Handling client connection, flags 0x%x\n", flags);
-
- if (flags & DBUS_WATCH_READABLE)
- {
- int client_fd;
- int listen_fd;
-
- listen_fd = dbus_watch_get_fd (watch);
-
- client_fd = _dbus_accept (listen_fd);
-
- if (client_fd < 0)
+ if (tmpdir != NULL)
{
- /* EINTR handled for us */
-
- if (errno == EAGAIN || errno == EWOULDBLOCK)
- _dbus_verbose ("No client available to accept after all\n");
+ DBusString full_path;
+ DBusString filename;
+
+ if (!_dbus_string_init (&full_path))
+ {
+ dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
+ return DBUS_SERVER_LISTEN_DID_NOT_CONNECT;
+ }
+
+ if (!_dbus_string_init (&filename))
+ {
+ _dbus_string_free (&full_path);
+ dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
+ return DBUS_SERVER_LISTEN_DID_NOT_CONNECT;
+ }
+
+ if (!_dbus_string_append (&filename,
+ "dbus-") ||
+ !_dbus_generate_random_ascii (&filename, 10) ||
+ !_dbus_string_append (&full_path, tmpdir) ||
+ !_dbus_concat_dir_and_file (&full_path, &filename))
+ {
+ _dbus_string_free (&full_path);
+ _dbus_string_free (&filename);
+ dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
+ return DBUS_SERVER_LISTEN_DID_NOT_CONNECT;
+ }
+
+ /* Always use abstract namespace if possible with tmpdir */
+
+ *server_p =
+ _dbus_server_new_for_domain_socket (_dbus_string_get_const_data (&full_path),
+#ifdef HAVE_ABSTRACT_SOCKETS
+ TRUE,
+#else
+ FALSE,
+#endif
+ error);
+
+ _dbus_string_free (&full_path);
+ _dbus_string_free (&filename);
+ }
+ else
+ {
+ if (path)
+ *server_p = _dbus_server_new_for_domain_socket (path, FALSE, error);
else
- _dbus_verbose ("Failed to accept a client connection: %s\n",
- _dbus_strerror (errno));
+ *server_p = _dbus_server_new_for_domain_socket (abstract, TRUE, error);
+ }
- SERVER_UNLOCK (server);
+ if (*server_p != NULL)
+ {
+ _DBUS_ASSERT_ERROR_IS_CLEAR(error);
+ return DBUS_SERVER_LISTEN_OK;
}
else
{
- _dbus_fd_set_close_on_exec (client_fd);
-
- if (!handle_new_client_fd_and_unlock (server, client_fd))
- _dbus_verbose ("Rejected client connection due to lack of memory\n");
+ _DBUS_ASSERT_ERROR_IS_SET(error);
+ return DBUS_SERVER_LISTEN_DID_NOT_CONNECT;
}
}
+ else if (strcmp (method, "systemd") == 0)
+ {
+ int i, n, *fds;
+ DBusString address;
- if (flags & DBUS_WATCH_ERROR)
- _dbus_verbose ("Error on server listening socket\n");
-
- if (flags & DBUS_WATCH_HANGUP)
- _dbus_verbose ("Hangup on server listening socket\n");
+ n = _dbus_listen_systemd_sockets (&fds, error);
+ if (n < 0)
+ {
+ _DBUS_ASSERT_ERROR_IS_SET (error);
+ return DBUS_SERVER_LISTEN_DID_NOT_CONNECT;
+ }
- return TRUE;
-}
-
-static void
-unix_disconnect (DBusServer *server)
-{
- DBusServerUnix *unix_server = (DBusServerUnix*) server;
+ if (!_dbus_string_init (&address))
+ goto systemd_oom;
- HAVE_LOCK_CHECK (server);
-
- if (unix_server->watch)
- {
- _dbus_server_remove_watch (server,
- unix_server->watch);
- _dbus_watch_unref (unix_server->watch);
- unix_server->watch = NULL;
- }
-
- close (unix_server->fd);
- unix_server->fd = -1;
+ for (i = 0; i < n; i++)
+ {
+ if (i > 0)
+ {
+ if (!_dbus_string_append (&address, ";"))
+ goto systemd_oom;
+ }
+ if (!_dbus_append_address_from_socket (fds[i], &address, error))
+ goto systemd_err;
+ }
- if (unix_server->socket_name != NULL)
- {
- DBusString tmp;
- _dbus_string_init_const (&tmp, unix_server->socket_name);
- _dbus_delete_file (&tmp, NULL);
- }
+ *server_p = _dbus_server_new_for_socket (fds, n, &address, NULL);
+ if (*server_p == NULL)
+ goto systemd_oom;
- HAVE_LOCK_CHECK (server);
-}
+ dbus_free (fds);
-static const DBusServerVTable unix_vtable = {
- unix_finalize,
- unix_disconnect
-};
+ return DBUS_SERVER_LISTEN_OK;
+ systemd_oom:
+ _DBUS_SET_OOM (error);
+ systemd_err:
+ for (i = 0; i < n; i++)
+ {
+ _dbus_close_socket (fds[i], NULL);
+ }
+ dbus_free (fds);
+ _dbus_string_free (&address);
-/**
- * Creates a new server listening on the given file descriptor. The
- * file descriptor should be nonblocking (use
- * _dbus_set_fd_nonblocking() to make it so). The file descriptor
- * should be listening for connections, that is, listen() should have
- * been successfully invoked on it. The server will use accept() to
- * accept new client connections.
- *
- * @param fd the file descriptor.
- * @param address the server's address
- * @returns the new server, or #NULL if no memory.
- *
- */
-DBusServer*
-_dbus_server_new_for_fd (int fd,
- const DBusString *address)
-{
- DBusServerUnix *unix_server;
- DBusServer *server;
- DBusWatch *watch;
-
- unix_server = dbus_new0 (DBusServerUnix, 1);
- if (unix_server == NULL)
- return NULL;
-
- watch = _dbus_watch_new (fd,
- DBUS_WATCH_READABLE,
- TRUE,
- unix_handle_watch, unix_server,
- NULL);
- if (watch == NULL)
- {
- dbus_free (unix_server);
- return NULL;
+ return DBUS_SERVER_LISTEN_DID_NOT_CONNECT;
}
-
- if (!_dbus_server_init_base (&unix_server->base,
- &unix_vtable, address))
+#ifdef DBUS_ENABLE_LAUNCHD
+ else if (strcmp (method, "launchd") == 0)
{
- _dbus_watch_unref (watch);
- dbus_free (unix_server);
- return NULL;
- }
-
- server = (DBusServer*) unix_server;
+ const char *launchd_env_var = dbus_address_entry_get_value (entry, "env");
+ if (launchd_env_var == NULL)
+ {
+ _dbus_set_bad_address (error, "launchd", "env", NULL);
+ return DBUS_SERVER_LISTEN_DID_NOT_CONNECT;
+ }
+ *server_p = _dbus_server_new_for_launchd (launchd_env_var, error);
- SERVER_LOCK (server);
-
- if (!_dbus_server_add_watch (&unix_server->base,
- watch))
+ if (*server_p != NULL)
+ {
+ _DBUS_ASSERT_ERROR_IS_CLEAR(error);
+ return DBUS_SERVER_LISTEN_OK;
+ }
+ else
+ {
+ _DBUS_ASSERT_ERROR_IS_SET(error);
+ return DBUS_SERVER_LISTEN_DID_NOT_CONNECT;
+ }
+ }
+#endif
+ else
{
- SERVER_UNLOCK (server);
- _dbus_server_finalize_base (&unix_server->base);
- _dbus_watch_unref (watch);
- dbus_free (unix_server);
- return NULL;
+ /* If we don't handle the method, we return NULL with the
+ * error unset
+ */
+ _DBUS_ASSERT_ERROR_IS_CLEAR(error);
+ return DBUS_SERVER_LISTEN_NOT_HANDLED;
}
-
- unix_server->fd = fd;
- unix_server->watch = watch;
-
- SERVER_UNLOCK (server);
-
- return (DBusServer*) unix_server;
}
/**
DBusError *error)
{
DBusServer *server;
- DBusServerUnix *unix_server;
int listen_fd;
DBusString address;
char *path_copy;
DBusString path_str;
-
+
_DBUS_ASSERT_ERROR_IS_CLEAR (error);
if (!_dbus_string_init (&address))
goto failed_0;
}
- path_copy = _dbus_strdup (path);
- if (path_copy == NULL)
+ if (abstract)
{
- dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
- goto failed_0;
+ path_copy = NULL;
+ }
+ else
+ {
+ path_copy = _dbus_strdup (path);
+ if (path_copy == NULL)
+ {
+ dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
+ goto failed_0;
+ }
}
-
+
listen_fd = _dbus_listen_unix_socket (path, abstract, error);
- _dbus_fd_set_close_on_exec (listen_fd);
-
+
if (listen_fd < 0)
{
_DBUS_ASSERT_ERROR_IS_SET (error);
goto failed_1;
}
-
- server = _dbus_server_new_for_fd (listen_fd, &address);
+
+ server = _dbus_server_new_for_socket (&listen_fd, 1, &address, 0);
if (server == NULL)
{
dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
goto failed_2;
}
- unix_server = (DBusServerUnix*) server;
- unix_server->socket_name = path_copy;
-
+ if (path_copy != NULL)
+ _dbus_server_socket_own_filename(server, path_copy);
+
_dbus_string_free (&address);
-
+
return server;
failed_2:
- _dbus_close (listen_fd, NULL);
+ _dbus_close_socket (listen_fd, NULL);
failed_1:
dbus_free (path_copy);
failed_0:
return NULL;
}
-/**
- * Creates a new server listening on the given hostname and port.
- * If the hostname is NULL, listens on localhost.
- *
- * @param host the hostname to listen on.
- * @param port the port to listen on.
- * @param error location to store reason for failure.
- * @returns the new server, or #NULL on failure.
- */
-DBusServer*
-_dbus_server_new_for_tcp_socket (const char *host,
- dbus_uint32_t port,
- DBusError *error)
-{
- DBusServer *server;
- int listen_fd;
- DBusString address;
- DBusString host_str;
-
- _DBUS_ASSERT_ERROR_IS_CLEAR (error);
-
- if (!_dbus_string_init (&address))
- {
- dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
- return NULL;
- }
-
- if (host == NULL)
- host = "localhost";
-
- _dbus_string_init_const (&host_str, host);
- if (!_dbus_string_append (&address, "tcp:host=") ||
- !_dbus_address_append_escaped (&address, &host_str) ||
- !_dbus_string_append (&address, ",port=") ||
- !_dbus_string_append_int (&address, port))
- {
- _dbus_string_free (&address);
- dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
- return NULL;
- }
-
- listen_fd = _dbus_listen_tcp_socket (host, port, error);
- _dbus_fd_set_close_on_exec (listen_fd);
-
- if (listen_fd < 0)
- {
- _dbus_string_free (&address);
- return NULL;
- }
-
- server = _dbus_server_new_for_fd (listen_fd, &address);
- if (server == NULL)
- {
- dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
- close (listen_fd);
- _dbus_string_free (&address);
- return NULL;
- }
-
- _dbus_string_free (&address);
-
- return server;
-
-
-}
-
/** @} */
-
projects / platform / upstream / dbus.git / blobdiff