1 /* dbus-server-launchd.c Server methods for interacting with launchd.
2 * Copyright (C) 2007, Tanner Lovelace <lovelace@wayfarer.org>
3 * Copyright (C) 2008, Colin Walters <walters@verbum.org>
4 * Copyright (C) 2008-2009, Benjamin Reed <rangerrick@befunk.com>
5 * Copyright (C) 2009, Jonas Bähr <jonas.baehr@web.de>
7 * Permission is hereby granted, free of charge, to any person
8 * obtaining a copy of this software and associated documentation
9 * files (the "Software"), to deal in the Software without
10 * restriction, including without limitation the rights to use, copy,
11 * modify, merge, publish, distribute, sublicense, and/or sell copies
12 * of the Software, and to permit persons to whom the Software is
13 * furnished to do so, subject to the following conditions:
15 * The above copyright notice and this permission notice shall be
16 * included in all copies or substantial portions of the Software.
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
19 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
21 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
22 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
23 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
24 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
25 * DEALINGS IN THE SOFTWARE.
29 #include "dbus-server-launchd.h"
32 * @defgroup DBusServerLaunchd DBusServer implementations for Launchd
33 * @ingroup DBusInternals
34 * @brief Implementation details of DBusServer with Launchd support
39 #ifdef DBUS_ENABLE_LAUNCHD
43 #include "dbus-misc.h"
44 #include "dbus-server-socket.h"
46 /* put other private launchd functions here */
48 #endif /* DBUS_ENABLE_LAUNCHD */
51 * @brief Creates a new server from launchd.
53 * launchd has allocaed a socket for us. We now query launchd for the
54 * file descriptor of this socket and create a server on it.
55 * In addition we inherit launchd's environment which holds a variable
56 * containing the path to the socket. This is used to init the server's
57 * address which is passed to autolaunched services.
59 * @param launchd_env_var the environment variable which holds the unix path to the socket
60 * @param error location to store reason for failure.
61 * @returns the new server, or #NULL on failure.
65 _dbus_server_new_for_launchd (const char *launchd_env_var, DBusError * error)
67 #ifdef DBUS_ENABLE_LAUNCHD
71 launch_data_t sockets_dict, checkin_response;
72 launch_data_t checkin_request;
73 launch_data_t listening_fd_array, listening_fd;
74 launch_data_t environment_dict, environment_param;
75 const char *launchd_socket_path, *display;
77 launchd_socket_path = _dbus_getenv (launchd_env_var);
78 display = _dbus_getenv ("DISPLAY");
80 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
82 if (launchd_socket_path == NULL || *launchd_socket_path == '\0')
84 dbus_set_error (error, DBUS_ERROR_BAD_ADDRESS,
85 "launchd's environment variable %s is empty, but should contain a socket path.\n", launchd_env_var);
89 if (!_dbus_string_init (&address))
91 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
94 if (!_dbus_string_append (&address, "unix:path="))
96 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
99 if (!_dbus_string_append (&address, launchd_socket_path))
101 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
105 if ((checkin_request = launch_data_new_string (LAUNCH_KEY_CHECKIN)) == NULL)
107 dbus_set_error (error, DBUS_ERROR_NO_MEMORY,
108 "launch_data_new_string(\"%s\") Unable to create string.\n",
113 if ((checkin_response = launch_msg (checkin_request)) == NULL)
115 dbus_set_error (error, DBUS_ERROR_IO_ERROR,
116 "launch_msg(\"%s\") IPC failure: %s\n",
117 LAUNCH_KEY_CHECKIN, strerror (errno));
121 if (LAUNCH_DATA_ERRNO == launch_data_get_type (checkin_response))
123 dbus_set_error (error, DBUS_ERROR_FAILED, "Check-in failed: %s\n",
124 strerror (launch_data_get_errno (checkin_response)));
129 launch_data_dict_lookup (checkin_response, LAUNCH_JOBKEY_SOCKETS);
130 if (NULL == sockets_dict)
132 dbus_set_error (error, DBUS_ERROR_IO_ERROR,
133 "No sockets found to answer requests on!\n");
138 launch_data_dict_lookup (sockets_dict, "unix_domain_listener");
139 if (NULL == listening_fd_array)
141 dbus_set_error (error, DBUS_ERROR_IO_ERROR,
142 "No known sockets found to answer requests on!\n");
146 if (launch_data_array_get_count (listening_fd_array) != 1)
148 dbus_set_error (error, DBUS_ERROR_LIMITS_EXCEEDED,
149 "Expected 1 socket from launchd, got %d.\n",
150 launch_data_array_get_count (listening_fd_array));
154 listening_fd = launch_data_array_get_index (listening_fd_array, 0);
155 launchd_fd = launch_data_get_fd (listening_fd);
157 _dbus_fd_set_close_on_exec (launchd_fd);
161 _DBUS_ASSERT_ERROR_IS_SET (error);
163 if (display == NULL || *display == '\0')
165 environment_dict = launch_data_dict_lookup (checkin_response, LAUNCH_JOBKEY_USERENVIRONMENTVARIABLES);
166 if (NULL == environment_dict)
168 _dbus_warn ("Unable to retrieve user environment from launchd.");
172 environment_param = launch_data_dict_lookup (environment_dict, "DISPLAY");
173 if (NULL == environment_param)
175 _dbus_warn ("Unable to retrieve DISPLAY from launchd.");
179 display = launch_data_get_string(environment_param);
180 dbus_setenv ("DISPLAY", display);
187 server = _dbus_server_new_for_socket (&launchd_fd, 1, &address, 0);
190 dbus_set_error (error, DBUS_ERROR_NO_SERVER,
191 "Unable to listen on launchd fd %d.", launchd_fd);
195 _dbus_string_free (&address);
200 _dbus_string_free (&address);
203 #else /* DBUS_ENABLE_LAUNCHD */
204 dbus_set_error (error, DBUS_ERROR_BAD_ADDRESS,
205 "address type 'launchd' requested, but launchd support not compiled in");